ffmpeg.c 170 KB
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/*
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 * Copyright (c) 2000-2003 Fabrice Bellard
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 *
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 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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/**
 * @file
 * multimedia converter based on the FFmpeg libraries
 */

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#include "config.h"
#include <ctype.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>
#include <errno.h>
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#include <limits.h>
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#include <stdatomic.h>
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#include <stdint.h>

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#if HAVE_IO_H
#include <io.h>
#endif
#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include "libavformat/avformat.h"
#include "libavdevice/avdevice.h"
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#include "libswresample/swresample.h"
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#include "libavutil/opt.h"
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#include "libavutil/channel_layout.h"
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#include "libavutil/parseutils.h"
#include "libavutil/samplefmt.h"
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#include "libavutil/fifo.h"
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#include "libavutil/hwcontext.h"
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#include "libavutil/internal.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/dict.h"
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#include "libavutil/display.h"
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#include "libavutil/mathematics.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/avstring.h"
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#include "libavutil/libm.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/timestamp.h"
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#include "libavutil/bprint.h"
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#include "libavutil/time.h"
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#include "libavutil/thread.h"
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#include "libavutil/threadmessage.h"
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#include "libavcodec/mathops.h"
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#include "libavformat/os_support.h"
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# include "libavfilter/avfilter.h"
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# include "libavfilter/buffersrc.h"
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# include "libavfilter/buffersink.h"
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#if HAVE_SYS_RESOURCE_H
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/resource.h>
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#elif HAVE_GETPROCESSTIMES
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#include <windows.h>
#endif
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#if HAVE_GETPROCESSMEMORYINFO
#include <windows.h>
#include <psapi.h>
#endif
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#if HAVE_SETCONSOLECTRLHANDLER
#include <windows.h>
#endif

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#if HAVE_SYS_SELECT_H
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#include <sys/select.h>
#endif

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#if HAVE_TERMIOS_H
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <termios.h>
#elif HAVE_KBHIT
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#include <conio.h>
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#endif
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#include <time.h>
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#include "ffmpeg.h"
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#include "cmdutils.h"

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#include "libavutil/avassert.h"
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const char program_name[] = "ffmpeg";
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const int program_birth_year = 2000;
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static FILE *vstats_file;
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const char *const forced_keyframes_const_names[] = {
    "n",
    "n_forced",
    "prev_forced_n",
    "prev_forced_t",
    "t",
    NULL
};

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typedef struct BenchmarkTimeStamps {
    int64_t real_usec;
    int64_t user_usec;
    int64_t sys_usec;
} BenchmarkTimeStamps;

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static void do_video_stats(OutputStream *ost, int frame_size);
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static BenchmarkTimeStamps get_benchmark_time_stamps(void);
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static int64_t getmaxrss(void);
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static int ifilter_has_all_input_formats(FilterGraph *fg);
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static int run_as_daemon  = 0;
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static int nb_frames_dup = 0;
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static unsigned dup_warning = 1000;
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static int nb_frames_drop = 0;
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static int64_t decode_error_stat[2];
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static int want_sdp = 1;

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static BenchmarkTimeStamps current_time;
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AVIOContext *progress_avio = NULL;
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static uint8_t *subtitle_out;

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InputStream **input_streams = NULL;
int        nb_input_streams = 0;
InputFile   **input_files   = NULL;
int        nb_input_files   = 0;
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OutputStream **output_streams = NULL;
int         nb_output_streams = 0;
OutputFile   **output_files   = NULL;
int         nb_output_files   = 0;
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FilterGraph **filtergraphs;
int        nb_filtergraphs;
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#if HAVE_TERMIOS_H

/* init terminal so that we can grab keys */
static struct termios oldtty;
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static int restore_tty;
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#endif

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#if HAVE_THREADS
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static void free_input_threads(void);
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#endif
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/* sub2video hack:
   Convert subtitles to video with alpha to insert them in filter graphs.
   This is a temporary solution until libavfilter gets real subtitles support.
 */

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static int sub2video_get_blank_frame(InputStream *ist)
{
    int ret;
    AVFrame *frame = ist->sub2video.frame;

    av_frame_unref(frame);
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    ist->sub2video.frame->width  = ist->dec_ctx->width  ? ist->dec_ctx->width  : ist->sub2video.w;
    ist->sub2video.frame->height = ist->dec_ctx->height ? ist->dec_ctx->height : ist->sub2video.h;
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    ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
    if ((ret = av_frame_get_buffer(frame, 32)) < 0)
        return ret;
    memset(frame->data[0], 0, frame->height * frame->linesize[0]);
    return 0;
}
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static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
                                AVSubtitleRect *r)
{
    uint32_t *pal, *dst2;
    uint8_t *src, *src2;
    int x, y;

    if (r->type != SUBTITLE_BITMAP) {
        av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
        return;
    }
    if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
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        av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle (%d %d %d %d) overflowing %d %d\n",
            r->x, r->y, r->w, r->h, w, h
        );
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        return;
    }

    dst += r->y * dst_linesize + r->x * 4;
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    src = r->data[0];
    pal = (uint32_t *)r->data[1];
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    for (y = 0; y < r->h; y++) {
        dst2 = (uint32_t *)dst;
        src2 = src;
        for (x = 0; x < r->w; x++)
            *(dst2++) = pal[*(src2++)];
        dst += dst_linesize;
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        src += r->linesize[0];
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    }
}

static void sub2video_push_ref(InputStream *ist, int64_t pts)
{
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    AVFrame *frame = ist->sub2video.frame;
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    int i;
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    int ret;
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    av_assert1(frame->data[0]);
    ist->sub2video.last_pts = frame->pts = pts;
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    for (i = 0; i < ist->nb_filters; i++) {
        ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
                                           AV_BUFFERSRC_FLAG_KEEP_REF |
                                           AV_BUFFERSRC_FLAG_PUSH);
        if (ret != AVERROR_EOF && ret < 0)
            av_log(NULL, AV_LOG_WARNING, "Error while add the frame to buffer source(%s).\n",
                   av_err2str(ret));
    }
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}

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void sub2video_update(InputStream *ist, AVSubtitle *sub)
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{
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    AVFrame *frame = ist->sub2video.frame;
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    int8_t *dst;
    int     dst_linesize;
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    int num_rects, i;
    int64_t pts, end_pts;
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    if (!frame)
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        return;
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    if (sub) {
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        pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000LL,
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                                 AV_TIME_BASE_Q, ist->st->time_base);
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        end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000LL,
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                                 AV_TIME_BASE_Q, ist->st->time_base);
        num_rects = sub->num_rects;
    } else {
        pts       = ist->sub2video.end_pts;
        end_pts   = INT64_MAX;
        num_rects = 0;
    }
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    if (sub2video_get_blank_frame(ist) < 0) {
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        av_log(ist->dec_ctx, AV_LOG_ERROR,
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               "Impossible to get a blank canvas.\n");
        return;
    }
    dst          = frame->data    [0];
    dst_linesize = frame->linesize[0];
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    for (i = 0; i < num_rects; i++)
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        sub2video_copy_rect(dst, dst_linesize, frame->width, frame->height, sub->rects[i]);
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    sub2video_push_ref(ist, pts);
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    ist->sub2video.end_pts = end_pts;
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}

static void sub2video_heartbeat(InputStream *ist, int64_t pts)
{
    InputFile *infile = input_files[ist->file_index];
    int i, j, nb_reqs;
    int64_t pts2;

    /* When a frame is read from a file, examine all sub2video streams in
       the same file and send the sub2video frame again. Otherwise, decoded
       video frames could be accumulating in the filter graph while a filter
       (possibly overlay) is desperately waiting for a subtitle frame. */
    for (i = 0; i < infile->nb_streams; i++) {
        InputStream *ist2 = input_streams[infile->ist_index + i];
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        if (!ist2->sub2video.frame)
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            continue;
        /* subtitles seem to be usually muxed ahead of other streams;
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           if not, subtracting a larger time here is necessary */
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        pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
        /* do not send the heartbeat frame if the subtitle is already ahead */
        if (pts2 <= ist2->sub2video.last_pts)
            continue;
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        if (pts2 >= ist2->sub2video.end_pts ||
            (!ist2->sub2video.frame->data[0] && ist2->sub2video.end_pts < INT64_MAX))
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            sub2video_update(ist2, NULL);
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        for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
            nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
        if (nb_reqs)
            sub2video_push_ref(ist2, pts2);
    }
}

static void sub2video_flush(InputStream *ist)
{
    int i;
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    int ret;
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    if (ist->sub2video.end_pts < INT64_MAX)
        sub2video_update(ist, NULL);
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    for (i = 0; i < ist->nb_filters; i++) {
        ret = av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
        if (ret != AVERROR_EOF && ret < 0)
            av_log(NULL, AV_LOG_WARNING, "Flush the frame error.\n");
    }
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}

/* end of sub2video hack */

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static void term_exit_sigsafe(void)
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{
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#if HAVE_TERMIOS_H
    if(restore_tty)
        tcsetattr (0, TCSANOW, &oldtty);
#endif
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}
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void term_exit(void)
{
    av_log(NULL, AV_LOG_QUIET, "%s", "");
    term_exit_sigsafe();
}

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static volatile int received_sigterm = 0;
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static volatile int received_nb_signals = 0;
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static atomic_int transcode_init_done = ATOMIC_VAR_INIT(0);
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static volatile int ffmpeg_exited = 0;
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static int main_return_code = 0;
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static void
sigterm_handler(int sig)
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{
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    int ret;
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    received_sigterm = sig;
    received_nb_signals++;
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    term_exit_sigsafe();
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    if(received_nb_signals > 3) {
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        ret = write(2/*STDERR_FILENO*/, "Received > 3 system signals, hard exiting\n",
                    strlen("Received > 3 system signals, hard exiting\n"));
        if (ret < 0) { /* Do nothing */ };
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        exit(123);
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    }
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}

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#if HAVE_SETCONSOLECTRLHANDLER
static BOOL WINAPI CtrlHandler(DWORD fdwCtrlType)
{
    av_log(NULL, AV_LOG_DEBUG, "\nReceived windows signal %ld\n", fdwCtrlType);

    switch (fdwCtrlType)
    {
    case CTRL_C_EVENT:
    case CTRL_BREAK_EVENT:
        sigterm_handler(SIGINT);
        return TRUE;

    case CTRL_CLOSE_EVENT:
    case CTRL_LOGOFF_EVENT:
    case CTRL_SHUTDOWN_EVENT:
        sigterm_handler(SIGTERM);
        /* Basically, with these 3 events, when we return from this method the
           process is hard terminated, so stall as long as we need to
           to try and let the main thread(s) clean up and gracefully terminate
           (we have at most 5 seconds, but should be done far before that). */
        while (!ffmpeg_exited) {
            Sleep(0);
        }
        return TRUE;

    default:
        av_log(NULL, AV_LOG_ERROR, "Received unknown windows signal %ld\n", fdwCtrlType);
        return FALSE;
    }
}
#endif

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void term_init(void)
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{
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#if HAVE_TERMIOS_H
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    if (!run_as_daemon && stdin_interaction) {
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        struct termios tty;
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        if (tcgetattr (0, &tty) == 0) {
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            oldtty = tty;
            restore_tty = 1;

            tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
                             |INLCR|IGNCR|ICRNL|IXON);
            tty.c_oflag |= OPOST;
            tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
            tty.c_cflag &= ~(CSIZE|PARENB);
            tty.c_cflag |= CS8;
            tty.c_cc[VMIN] = 1;
            tty.c_cc[VTIME] = 0;

            tcsetattr (0, TCSANOW, &tty);
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        }
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        signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
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    }
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#endif

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    signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
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    signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
#ifdef SIGXCPU
    signal(SIGXCPU, sigterm_handler);
#endif
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#ifdef SIGPIPE
    signal(SIGPIPE, SIG_IGN); /* Broken pipe (POSIX). */
#endif
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#if HAVE_SETCONSOLECTRLHANDLER
    SetConsoleCtrlHandler((PHANDLER_ROUTINE) CtrlHandler, TRUE);
#endif
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}

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/* read a key without blocking */
static int read_key(void)
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{
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    unsigned char ch;
#if HAVE_TERMIOS_H
    int n = 1;
    struct timeval tv;
    fd_set rfds;
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    FD_ZERO(&rfds);
    FD_SET(0, &rfds);
    tv.tv_sec = 0;
    tv.tv_usec = 0;
    n = select(1, &rfds, NULL, NULL, &tv);
    if (n > 0) {
        n = read(0, &ch, 1);
        if (n == 1)
            return ch;

        return n;
    }
#elif HAVE_KBHIT
#    if HAVE_PEEKNAMEDPIPE
    static int is_pipe;
    static HANDLE input_handle;
    DWORD dw, nchars;
    if(!input_handle){
        input_handle = GetStdHandle(STD_INPUT_HANDLE);
        is_pipe = !GetConsoleMode(input_handle, &dw);
    }
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    if (is_pipe) {
        /* When running under a GUI, you will end here. */
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        if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
            // input pipe may have been closed by the program that ran ffmpeg
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            return -1;
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        }
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        //Read it
        if(nchars != 0) {
            read(0, &ch, 1);
            return ch;
        }else{
            return -1;
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        }
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    }
#    endif
    if(kbhit())
        return(getch());
#endif
    return -1;
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}

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static int decode_interrupt_cb(void *ctx)
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{
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    return received_nb_signals > atomic_load(&transcode_init_done);
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}

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const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
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static void ffmpeg_cleanup(int ret)
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{
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    int i, j;
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    if (do_benchmark) {
        int maxrss = getmaxrss() / 1024;
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        av_log(NULL, AV_LOG_INFO, "bench: maxrss=%ikB\n", maxrss);
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    }

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    for (i = 0; i < nb_filtergraphs; i++) {
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        FilterGraph *fg = filtergraphs[i];
        avfilter_graph_free(&fg->graph);
        for (j = 0; j < fg->nb_inputs; j++) {
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            while (av_fifo_size(fg->inputs[j]->frame_queue)) {
                AVFrame *frame;
                av_fifo_generic_read(fg->inputs[j]->frame_queue, &frame,
                                     sizeof(frame), NULL);
                av_frame_free(&frame);
            }
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            av_fifo_freep(&fg->inputs[j]->frame_queue);
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            if (fg->inputs[j]->ist->sub2video.sub_queue) {
                while (av_fifo_size(fg->inputs[j]->ist->sub2video.sub_queue)) {
                    AVSubtitle sub;
                    av_fifo_generic_read(fg->inputs[j]->ist->sub2video.sub_queue,
                                         &sub, sizeof(sub), NULL);
                    avsubtitle_free(&sub);
                }
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                av_fifo_freep(&fg->inputs[j]->ist->sub2video.sub_queue);
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            }
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            av_buffer_unref(&fg->inputs[j]->hw_frames_ctx);
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            av_freep(&fg->inputs[j]->name);
            av_freep(&fg->inputs[j]);
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        }
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        av_freep(&fg->inputs);
        for (j = 0; j < fg->nb_outputs; j++) {
            av_freep(&fg->outputs[j]->name);
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            av_freep(&fg->outputs[j]->formats);
            av_freep(&fg->outputs[j]->channel_layouts);
            av_freep(&fg->outputs[j]->sample_rates);
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            av_freep(&fg->outputs[j]);
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        }
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        av_freep(&fg->outputs);
        av_freep(&fg->graph_desc);

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        av_freep(&filtergraphs[i]);
    }
    av_freep(&filtergraphs);
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    av_freep(&subtitle_out);
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    /* close files */
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    for (i = 0; i < nb_output_files; i++) {
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        OutputFile *of = output_files[i];
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        AVFormatContext *s;
        if (!of)
            continue;
        s = of->ctx;
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        if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE))
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            avio_closep(&s->pb);
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        avformat_free_context(s);
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        av_dict_free(&of->opts);

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        av_freep(&output_files[i]);
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    }
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    for (i = 0; i < nb_output_streams; i++) {
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        OutputStream *ost = output_streams[i];
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        if (!ost)
            continue;

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        for (j = 0; j < ost->nb_bitstream_filters; j++)
            av_bsf_free(&ost->bsf_ctx[j]);
        av_freep(&ost->bsf_ctx);

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        av_frame_free(&ost->filtered_frame);
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        av_frame_free(&ost->last_frame);
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        av_dict_free(&ost->encoder_opts);
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        av_freep(&ost->forced_keyframes);
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        av_expr_free(ost->forced_keyframes_pexpr);
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        av_freep(&ost->avfilter);
        av_freep(&ost->logfile_prefix);
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        av_freep(&ost->audio_channels_map);
        ost->audio_channels_mapped = 0;

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        av_dict_free(&ost->sws_dict);

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        avcodec_free_context(&ost->enc_ctx);
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        avcodec_parameters_free(&ost->ref_par);
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        if (ost->muxing_queue) {
            while (av_fifo_size(ost->muxing_queue)) {
                AVPacket pkt;
                av_fifo_generic_read(ost->muxing_queue, &pkt, sizeof(pkt), NULL);
                av_packet_unref(&pkt);
            }
            av_fifo_freep(&ost->muxing_queue);
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        }

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        av_freep(&output_streams[i]);
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    }
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#if HAVE_THREADS
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    free_input_threads();
#endif
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    for (i = 0; i < nb_input_files; i++) {
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        avformat_close_input(&input_files[i]->ctx);
        av_freep(&input_files[i]);
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    }
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    for (i = 0; i < nb_input_streams; i++) {
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        InputStream *ist = input_streams[i];

        av_frame_free(&ist->decoded_frame);
        av_frame_free(&ist->filter_frame);
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        av_dict_free(&ist->decoder_opts);
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        avsubtitle_free(&ist->prev_sub.subtitle);
        av_frame_free(&ist->sub2video.frame);
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        av_freep(&ist->filters);
        av_freep(&ist->hwaccel_device);
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        av_freep(&ist->dts_buffer);
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        avcodec_free_context(&ist->dec_ctx);

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        av_freep(&input_streams[i]);
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    }
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    if (vstats_file) {
        if (fclose(vstats_file))
            av_log(NULL, AV_LOG_ERROR,
                   "Error closing vstats file, loss of information possible: %s\n",
                   av_err2str(AVERROR(errno)));
    }
615
    av_freep(&vstats_filename);
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    av_freep(&input_streams);
    av_freep(&input_files);
619
    av_freep(&output_streams);
620
    av_freep(&output_files);
621

622
    uninit_opts();
623

624
    avformat_network_deinit();
625

626
    if (received_sigterm) {
627
        av_log(NULL, AV_LOG_INFO, "Exiting normally, received signal %d.\n",
628
               (int) received_sigterm);
629
    } else if (ret && atomic_load(&transcode_init_done)) {
630
        av_log(NULL, AV_LOG_INFO, "Conversion failed!\n");
631
    }
632
    term_exit();
633
    ffmpeg_exited = 1;
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}

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void remove_avoptions(AVDictionary **a, AVDictionary *b)
{
    AVDictionaryEntry *t = NULL;

    while ((t = av_dict_get(b, "", t, AV_DICT_IGNORE_SUFFIX))) {
        av_dict_set(a, t->key, NULL, AV_DICT_MATCH_CASE);
    }
}

645
void assert_avoptions(AVDictionary *m)
646
{
647 648
    AVDictionaryEntry *t;
    if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
649
        av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
650
        exit_program(1);
651
    }
652
}
653

654
static void abort_codec_experimental(AVCodec *c, int encoder)
655
{
656
    exit_program(1);
657
}
658

659
static void update_benchmark(const char *fmt, ...)
660
{
661
    if (do_benchmark_all) {
662
        BenchmarkTimeStamps t = get_benchmark_time_stamps();
663 664
        va_list va;
        char buf[1024];
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        if (fmt) {
            va_start(va, fmt);
            vsnprintf(buf, sizeof(buf), fmt, va);
            va_end(va);
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            av_log(NULL, AV_LOG_INFO,
                   "bench: %8" PRIu64 " user %8" PRIu64 " sys %8" PRIu64 " real %s \n",
                   t.user_usec - current_time.user_usec,
                   t.sys_usec - current_time.sys_usec,
                   t.real_usec - current_time.real_usec, buf);
675
        }
676
        current_time = t;
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    }
}

680
static void close_all_output_streams(OutputStream *ost, OSTFinished this_stream, OSTFinished others)
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{
    int i;
    for (i = 0; i < nb_output_streams; i++) {
        OutputStream *ost2 = output_streams[i];
        ost2->finished |= ost == ost2 ? this_stream : others;
    }
}

689
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
690
{
691
    AVFormatContext *s = of->ctx;
692
    AVStream *st = ost->st;
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    int ret;

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    /*
     * Audio encoders may split the packets --  #frames in != #packets out.
     * But there is no reordering, so we can limit the number of output packets
     * by simply dropping them here.
     * Counting encoded video frames needs to be done separately because of
     * reordering, see do_video_out().
     * Do not count the packet when unqueued because it has been counted when queued.
     */
    if (!(st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && ost->encoding_needed) && !unqueue) {
        if (ost->frame_number >= ost->max_frames) {
            av_packet_unref(pkt);
            return;
        }
        ost->frame_number++;
    }

711
    if (!of->header_written) {
712
        AVPacket tmp_pkt = {0};
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        /* the muxer is not initialized yet, buffer the packet */
        if (!av_fifo_space(ost->muxing_queue)) {
            int new_size = FFMIN(2 * av_fifo_size(ost->muxing_queue),
                                 ost->max_muxing_queue_size);
            if (new_size <= av_fifo_size(ost->muxing_queue)) {
                av_log(NULL, AV_LOG_ERROR,
                       "Too many packets buffered for output stream %d:%d.\n",
                       ost->file_index, ost->st->index);
                exit_program(1);
            }
            ret = av_fifo_realloc2(ost->muxing_queue, new_size);
            if (ret < 0)
                exit_program(1);
        }
727
        ret = av_packet_make_refcounted(pkt);
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        if (ret < 0)
            exit_program(1);
730
        av_packet_move_ref(&tmp_pkt, pkt);
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        av_fifo_generic_write(ost->muxing_queue, &tmp_pkt, sizeof(tmp_pkt), NULL);
        return;
    }

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    if ((st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
        (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
737
        pkt->pts = pkt->dts = AV_NOPTS_VALUE;
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739
    if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
740
        int i;
741
        uint8_t *sd = av_packet_get_side_data(pkt, AV_PKT_DATA_QUALITY_STATS,
742
                                              NULL);
743
        ost->quality = sd ? AV_RL32(sd) : -1;
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        ost->pict_type = sd ? sd[4] : AV_PICTURE_TYPE_NONE;
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        for (i = 0; i<FF_ARRAY_ELEMS(ost->error); i++) {
            if (sd && i < sd[5])
                ost->error[i] = AV_RL64(sd + 8 + 8*i);
            else
                ost->error[i] = -1;
        }
752

753
        if (ost->frame_rate.num && ost->is_cfr) {
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            if (pkt->duration > 0)
                av_log(NULL, AV_LOG_WARNING, "Overriding packet duration by frame rate, this should not happen\n");
756
            pkt->duration = av_rescale_q(1, av_inv_q(ost->frame_rate),
757
                                         ost->mux_timebase);
758
        }
759
    }
760

761 762
    av_packet_rescale_ts(pkt, ost->mux_timebase, ost->st->time_base);

763
    if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS)) {
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        if (pkt->dts != AV_NOPTS_VALUE &&
            pkt->pts != AV_NOPTS_VALUE &&
            pkt->dts > pkt->pts) {
            av_log(s, AV_LOG_WARNING, "Invalid DTS: %"PRId64" PTS: %"PRId64" in output stream %d:%d, replacing by guess\n",
                   pkt->dts, pkt->pts,
                   ost->file_index, ost->st->index);
            pkt->pts =
            pkt->dts = pkt->pts + pkt->dts + ost->last_mux_dts + 1
                     - FFMIN3(pkt->pts, pkt->dts, ost->last_mux_dts + 1)
                     - FFMAX3(pkt->pts, pkt->dts, ost->last_mux_dts + 1);
        }
775
        if ((st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO || st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) &&
776
            pkt->dts != AV_NOPTS_VALUE &&
777
            !(st->codecpar->codec_id == AV_CODEC_ID_VP9 && ost->stream_copy) &&
778 779 780
            ost->last_mux_dts != AV_NOPTS_VALUE) {
            int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
            if (pkt->dts < max) {
781
                int loglevel = max - pkt->dts > 2 || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
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                av_log(s, loglevel, "Non-monotonous DTS in output stream "
                       "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
                       ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
                if (exit_on_error) {
                    av_log(NULL, AV_LOG_FATAL, "aborting.\n");
                    exit_program(1);
                }
                av_log(s, loglevel, "changing to %"PRId64". This may result "
                       "in incorrect timestamps in the output file.\n",
                       max);
                if (pkt->pts >= pkt->dts)
                    pkt->pts = FFMAX(pkt->pts, max);
                pkt->dts = max;
            }
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        }
    }
    ost->last_mux_dts = pkt->dts;

800
    ost->data_size += pkt->size;
801
    ost->packets_written++;
802

803
    pkt->stream_index = ost->index;
804 805 806

    if (debug_ts) {
        av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
807
                "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
808
                av_get_media_type_string(ost->enc_ctx->codec_type),
809
                av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
810 811
                av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
                pkt->size
812 813 814
              );
    }

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    ret = av_interleaved_write_frame(s, pkt);
    if (ret < 0) {
817
        print_error("av_interleaved_write_frame()", ret);
818
        main_return_code = 1;
819
        close_all_output_streams(ost, MUXER_FINISHED | ENCODER_FINISHED, ENCODER_FINISHED);
820
    }
821
    av_packet_unref(pkt);
822 823
}

824 825 826 827
static void close_output_stream(OutputStream *ost)
{
    OutputFile *of = output_files[ost->file_index];

828
    ost->finished |= ENCODER_FINISHED;
829
    if (of->shortest) {
830
        int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, AV_TIME_BASE_Q);
831
        of->recording_time = FFMIN(of->recording_time, end);
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    }
}

835 836 837 838 839 840 841 842 843 844 845 846 847
/*
 * Send a single packet to the output, applying any bitstream filters
 * associated with the output stream.  This may result in any number
 * of packets actually being written, depending on what bitstream
 * filters are applied.  The supplied packet is consumed and will be
 * blank (as if newly-allocated) when this function returns.
 *
 * If eof is set, instead indicate EOF to all bitstream filters and
 * therefore flush any delayed packets to the output.  A blank packet
 * must be supplied in this case.
 */
static void output_packet(OutputFile *of, AVPacket *pkt,
                          OutputStream *ost, int eof)
848 849 850 851 852 853 854
{
    int ret = 0;

    /* apply the output bitstream filters, if any */
    if (ost->nb_bitstream_filters) {
        int idx;

855
        ret = av_bsf_send_packet(ost->bsf_ctx[0], eof ? NULL : pkt);
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        if (ret < 0)
            goto finish;

859
        eof = 0;
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        idx = 1;
        while (idx) {
            /* get a packet from the previous filter up the chain */
            ret = av_bsf_receive_packet(ost->bsf_ctx[idx - 1], pkt);
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            if (ret == AVERROR(EAGAIN)) {
                ret = 0;
                idx--;
                continue;
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            } else if (ret == AVERROR_EOF) {
                eof = 1;
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            } else if (ret < 0)
                goto finish;
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            /* send it to the next filter down the chain or to the muxer */
            if (idx < ost->nb_bitstream_filters) {
875
                ret = av_bsf_send_packet(ost->bsf_ctx[idx], eof ? NULL : pkt);
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                if (ret < 0)
                    goto finish;
                idx++;
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                eof = 0;
            } else if (eof)
                goto finish;
            else
883
                write_packet(of, pkt, ost, 0);
884
        }
885
    } else if (!eof)
886
        write_packet(of, pkt, ost, 0);
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finish:
    if (ret < 0 && ret != AVERROR_EOF) {
        av_log(NULL, AV_LOG_ERROR, "Error applying bitstream filters to an output "
               "packet for stream #%d:%d.\n", ost->file_index, ost->index);
        if(exit_on_error)
            exit_program(1);
    }
}

897
static int check_recording_time(OutputStream *ost)
898
{
899
    OutputFile *of = output_files[ost->file_index];
900

901
    if (of->recording_time != INT64_MAX &&
902
        av_compare_ts(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, of->recording_time,
903
                      AV_TIME_BASE_Q) >= 0) {
904
        close_output_stream(ost);
905
        return 0;
906
    }
907 908
    return 1;
}
909

910
static void do_audio_out(OutputFile *of, OutputStream *ost,
911
                         AVFrame *frame)
912
{
913
    AVCodecContext *enc = ost->enc_ctx;
914
    AVPacket pkt;
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915
    int ret;
916

917 918 919
    av_init_packet(&pkt);
    pkt.data = NULL;
    pkt.size = 0;
920

921 922
    if (!check_recording_time(ost))
        return;
923

924
    if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
925
        frame->pts = ost->sync_opts;
926
    ost->sync_opts = frame->pts + frame->nb_samples;
927 928
    ost->samples_encoded += frame->nb_samples;
    ost->frames_encoded++;
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930 931
    av_assert0(pkt.size || !pkt.data);
    update_benchmark(NULL);
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    if (debug_ts) {
        av_log(NULL, AV_LOG_INFO, "encoder <- type:audio "
               "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
               av_ts2str(frame->pts), av_ts2timestr(frame->pts, &enc->time_base),
               enc->time_base.num, enc->time_base.den);
    }
938

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    ret = avcodec_send_frame(enc, frame);
    if (ret < 0)
        goto error;

    while (1) {
        ret = avcodec_receive_packet(enc, &pkt);
        if (ret == AVERROR(EAGAIN))
            break;
        if (ret < 0)
            goto error;

        update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
951

952
        av_packet_rescale_ts(&pkt, enc->time_base, ost->mux_timebase);
953

954 955 956
        if (debug_ts) {
            av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
                   "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
957 958
                   av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &enc->time_base),
                   av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &enc->time_base));
959
        }
960

961
        output_packet(of, &pkt, ost, 0);
962
    }
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    return;
error:
    av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
    exit_program(1);
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}

970
static void do_subtitle_out(OutputFile *of,
971
                            OutputStream *ost,
972
                            AVSubtitle *sub)
973
{
974 975 976 977
    int subtitle_out_max_size = 1024 * 1024;
    int subtitle_out_size, nb, i;
    AVCodecContext *enc;
    AVPacket pkt;
978
    int64_t pts;
979

980
    if (sub->pts == AV_NOPTS_VALUE) {
981
        av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
982
        if (exit_on_error)
983
            exit_program(1);
984
        return;
985
    }
986

987
    enc = ost->enc_ctx;
988

989 990
    if (!subtitle_out) {
        subtitle_out = av_malloc(subtitle_out_max_size);
991 992 993 994
        if (!subtitle_out) {
            av_log(NULL, AV_LOG_FATAL, "Failed to allocate subtitle_out\n");
            exit_program(1);
        }
995 996
    }

997 998 999
    /* Note: DVB subtitle need one packet to draw them and one other
       packet to clear them */
    /* XXX: signal it in the codec context ? */
1000
    if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
1001 1002 1003
        nb = 2;
    else
        nb = 1;
1004

1005
    /* shift timestamp to honor -ss and make check_recording_time() work with -t */
1006 1007 1008
    pts = sub->pts;
    if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE)
        pts -= output_files[ost->file_index]->start_time;
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1009
    for (i = 0; i < nb; i++) {
1010 1011
        unsigned save_num_rects = sub->num_rects;

1012
        ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
1013 1014
        if (!check_recording_time(ost))
            return;
1015

1016
        sub->pts = pts;
1017
        // start_display_time is required to be 0
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        sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
        sub->end_display_time  -= sub->start_display_time;
1020
        sub->start_display_time = 0;
1021 1022
        if (i == 1)
            sub->num_rects = 0;
1023 1024 1025

        ost->frames_encoded++;

1026 1027
        subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
                                                    subtitle_out_max_size, sub);
1028 1029
        if (i == 1)
            sub->num_rects = save_num_rects;
1030
        if (subtitle_out_size < 0) {
1031
            av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1032
            exit_program(1);
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        }

        av_init_packet(&pkt);
        pkt.data = subtitle_out;
        pkt.size = subtitle_out_size;
1038 1039
        pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->mux_timebase);
        pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->mux_timebase);
1040
        if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
1041 1042 1043
            /* XXX: the pts correction is handled here. Maybe handling
               it in the codec would be better */
            if (i == 0)
1044
                pkt.pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, ost->mux_timebase);
1045
            else
1046
                pkt.pts += av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->mux_timebase);
1047
        }
1048
        pkt.dts = pkt.pts;
1049
        output_packet(of, &pkt, ost, 0);
1050
    }
1051
}
1052

1053
static void do_video_out(OutputFile *of,
1054
                         OutputStream *ost,
1055 1056
                         AVFrame *next_picture,
                         double sync_ipts)
1057
{
1058 1059
    int ret, format_video_sync;
    AVPacket pkt;
1060
    AVCodecContext *enc = ost->enc_ctx;
1061
    AVCodecParameters *mux_par = ost->st->codecpar;
1062
    AVRational frame_rate;
1063
    int nb_frames, nb0_frames, i;
1064
    double delta, delta0;
1065 1066 1067
    double duration = 0;
    int frame_size = 0;
    InputStream *ist = NULL;
1068
    AVFilterContext *filter = ost->filter->filter;
1069

1070 1071
    if (ost->source_index >= 0)
        ist = input_streams[ost->source_index];
1072

1073 1074 1075
    frame_rate = av_buffersink_get_frame_rate(filter);
    if (frame_rate.num > 0 && frame_rate.den > 0)
        duration = 1/(av_q2d(frame_rate) * av_q2d(enc->time_base));
1076 1077 1078

    if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
        duration = FFMIN(duration, 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base)));
1079

1080 1081
    if (!ost->filters_script &&
        !ost->filters &&
1082
        (nb_filtergraphs == 0 || !filtergraphs[0]->graph_desc) &&
1083 1084
        next_picture &&
        ist &&
1085 1086
        lrintf(next_picture->pkt_duration * av_q2d(ist->st->time_base) / av_q2d(enc->time_base)) > 0) {
        duration = lrintf(next_picture->pkt_duration * av_q2d(ist->st->time_base) / av_q2d(enc->time_base));
1087 1088
    }

1089 1090 1091 1092 1093 1094
    if (!next_picture) {
        //end, flushing
        nb0_frames = nb_frames = mid_pred(ost->last_nb0_frames[0],
                                          ost->last_nb0_frames[1],
                                          ost->last_nb0_frames[2]);
    } else {
1095
        delta0 = sync_ipts - ost->sync_opts; // delta0 is the "drift" between the input frame (next_picture) and where it would fall in the output.
1096
        delta  = delta0 + duration;
1097

1098
        /* by default, we output a single frame */
1099
        nb0_frames = 0; // tracks the number of times the PREVIOUS frame should be duplicated, mostly for variable framerate (VFR)
1100
        nb_frames = 1;
1101

1102 1103
        format_video_sync = video_sync_method;
        if (format_video_sync == VSYNC_AUTO) {
1104
            if(!strcmp(of->ctx->oformat->name, "avi")) {
1105 1106
                format_video_sync = VSYNC_VFR;
            } else
1107
                format_video_sync = (of->ctx->oformat->flags & AVFMT_VARIABLE_FPS) ? ((of->ctx->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
1108 1109 1110 1111 1112 1113 1114 1115 1116
            if (   ist
                && format_video_sync == VSYNC_CFR
                && input_files[ist->file_index]->ctx->nb_streams == 1
                && input_files[ist->file_index]->input_ts_offset == 0) {
                format_video_sync = VSYNC_VSCFR;
            }
            if (format_video_sync == VSYNC_CFR && copy_ts) {
                format_video_sync = VSYNC_VSCFR;
            }
1117
        }
1118
        ost->is_cfr = (format_video_sync == VSYNC_CFR || format_video_sync == VSYNC_VSCFR);
1119

1120 1121 1122 1123 1124
        if (delta0 < 0 &&
            delta > 0 &&
            format_video_sync != VSYNC_PASSTHROUGH &&
            format_video_sync != VSYNC_DROP) {
            if (delta0 < -0.6) {
1125
                av_log(NULL, AV_LOG_VERBOSE, "Past duration %f too large\n", -delta0);
1126
            } else
1127
                av_log(NULL, AV_LOG_DEBUG, "Clipping frame in rate conversion by %f\n", -delta0);
1128 1129 1130
            sync_ipts = ost->sync_opts;
            duration += delta0;
            delta0 = 0;
1131
        }
1132

1133 1134
        switch (format_video_sync) {
        case VSYNC_VSCFR:
1135 1136
            if (ost->frame_number == 0 && delta0 >= 0.5) {
                av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial frames\n", (int)lrintf(delta0));
1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160
                delta = duration;
                delta0 = 0;
                ost->sync_opts = lrint(sync_ipts);
            }
        case VSYNC_CFR:
            // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
            if (frame_drop_threshold && delta < frame_drop_threshold && ost->frame_number) {
                nb_frames = 0;
            } else if (delta < -1.1)
                nb_frames = 0;
            else if (delta > 1.1) {
                nb_frames = lrintf(delta);
                if (delta0 > 1.1)
                    nb0_frames = lrintf(delta0 - 0.6);
            }
            break;
        case VSYNC_VFR:
            if (delta <= -0.6)
                nb_frames = 0;
            else if (delta > 0.6)
                ost->sync_opts = lrint(sync_ipts);
            break;
        case VSYNC_DROP:
        case VSYNC_PASSTHROUGH:
1161
            ost->sync_opts = lrint(sync_ipts);
1162 1163 1164
            break;
        default:
            av_assert0(0);
1165
        }
1166
    }
1167 1168

    nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1169
    nb0_frames = FFMIN(nb0_frames, nb_frames);
1170 1171 1172 1173 1174 1175

    memmove(ost->last_nb0_frames + 1,
            ost->last_nb0_frames,
            sizeof(ost->last_nb0_frames[0]) * (FF_ARRAY_ELEMS(ost->last_nb0_frames) - 1));
    ost->last_nb0_frames[0] = nb0_frames;

1176
    if (nb0_frames == 0 && ost->last_dropped) {
1177
        nb_frames_drop++;
1178
        av_log(NULL, AV_LOG_VERBOSE,
1179
               "*** dropping frame %d from stream %d at ts %"PRId64"\n",
1180
               ost->frame_number, ost->st->index, ost->last_frame->pts);
1181
    }
1182
    if (nb_frames > (nb0_frames && ost->last_dropped) + (nb_frames > nb0_frames)) {
1183
        if (nb_frames > dts_error_threshold * 30) {
1184
            av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
1185 1186
            nb_frames_drop++;
            return;
1187
        }
1188
        nb_frames_dup += nb_frames - (nb0_frames && ost->last_dropped) - (nb_frames > nb0_frames);
1189
        av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1190 1191 1192 1193
        if (nb_frames_dup > dup_warning) {
            av_log(NULL, AV_LOG_WARNING, "More than %d frames duplicated\n", dup_warning);
            dup_warning *= 10;
        }
1194
    }
1195
    ost->last_dropped = nb_frames == nb0_frames && next_picture;
1196

1197 1198 1199 1200 1201 1202 1203 1204
    /* duplicates frame if needed */
    for (i = 0; i < nb_frames; i++) {
        AVFrame *in_picture;
        int forced_keyframe = 0;
        double pts_time;
        av_init_packet(&pkt);
        pkt.data = NULL;
        pkt.size = 0;
1205

1206 1207 1208 1209
        if (i < nb0_frames && ost->last_frame) {
            in_picture = ost->last_frame;
        } else
            in_picture = next_picture;
1210

1211 1212
        if (!in_picture)
            return;
1213

1214
        in_picture->pts = ost->sync_opts;
1215

1216 1217
        if (!check_recording_time(ost))
            return;
1218

1219
        if (enc->flags & (AV_CODEC_FLAG_INTERLACED_DCT | AV_CODEC_FLAG_INTERLACED_ME) &&
1220 1221
            ost->top_field_first >= 0)
            in_picture->top_field_first = !!ost->top_field_first;
1222

1223
        if (in_picture->interlaced_frame) {
1224
            if (enc->codec->id == AV_CODEC_ID_MJPEG)
1225
                mux_par->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
1226
            else
1227
                mux_par->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
1228
        } else
1229
            mux_par->field_order = AV_FIELD_PROGRESSIVE;
1230

1231
        in_picture->quality = enc->global_quality;
1232
        in_picture->pict_type = 0;
1233

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        if (ost->forced_kf_ref_pts == AV_NOPTS_VALUE &&
            in_picture->pts != AV_NOPTS_VALUE)
            ost->forced_kf_ref_pts = in_picture->pts;

1238
        pts_time = in_picture->pts != AV_NOPTS_VALUE ?
1239
            (in_picture->pts - ost->forced_kf_ref_pts) * av_q2d(enc->time_base) : NAN;
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1240
        if (ost->forced_kf_index < ost->forced_kf_count &&
1241
            in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
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1242
            ost->forced_kf_index++;
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            forced_keyframe = 1;
        } else if (ost->forced_keyframes_pexpr) {
            double res;
            ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
            res = av_expr_eval(ost->forced_keyframes_pexpr,
                               ost->forced_keyframes_expr_const_values, NULL);
1249
            ff_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
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                    ost->forced_keyframes_expr_const_values[FKF_N],
                    ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
                    ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
                    ost->forced_keyframes_expr_const_values[FKF_T],
                    ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
                    res);
            if (res) {
                forced_keyframe = 1;
                ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
                    ost->forced_keyframes_expr_const_values[FKF_N];
                ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
                    ost->forced_keyframes_expr_const_values[FKF_T];
                ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
            }

            ost->forced_keyframes_expr_const_values[FKF_N] += 1;
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        } else if (   ost->forced_keyframes
                   && !strncmp(ost->forced_keyframes, "source", 6)
                   && in_picture->key_frame==1) {
            forced_keyframe = 1;
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1270
        }
1271

1272
        if (forced_keyframe) {
1273
            in_picture->pict_type = AV_PICTURE_TYPE_I;
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            av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
        }

1277
        update_benchmark(NULL);
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        if (debug_ts) {
            av_log(NULL, AV_LOG_INFO, "encoder <- type:video "
                   "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
                   av_ts2str(in_picture->pts), av_ts2timestr(in_picture->pts, &enc->time_base),
                   enc->time_base.num, enc->time_base.den);
        }

1285 1286
        ost->frames_encoded++;

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        ret = avcodec_send_frame(enc, in_picture);
        if (ret < 0)
            goto error;
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        // Make sure Closed Captions will not be duplicated
        av_frame_remove_side_data(in_picture, AV_FRAME_DATA_A53_CC);
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        while (1) {
            ret = avcodec_receive_packet(enc, &pkt);
            update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
            if (ret == AVERROR(EAGAIN))
                break;
            if (ret < 0)
                goto error;
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            if (debug_ts) {
                av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
                       "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
                       av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &enc->time_base),
                       av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &enc->time_base));
            }

1308
            if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & AV_CODEC_CAP_DELAY))
1309
                pkt.pts = ost->sync_opts;
1310

1311
            av_packet_rescale_ts(&pkt, enc->time_base, ost->mux_timebase);
1312

1313 1314 1315
            if (debug_ts) {
                av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
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                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->mux_timebase),
                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->mux_timebase));
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            }

            frame_size = pkt.size;
1321
            output_packet(of, &pkt, ost, 0);
1322

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            /* if two pass, output log */
            if (ost->logfile && enc->stats_out) {
                fprintf(ost->logfile, "%s", enc->stats_out);
1326
            }
1327
        }
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        ost->sync_opts++;
        /*
         * For video, number of frames in == number of packets out.
         * But there may be reordering, so we can't throw away frames on encoder
         * flush, we need to limit them here, before they go into encoder.
         */
        ost->frame_number++;
1335

1336 1337 1338
        if (vstats_filename && frame_size)
            do_video_stats(ost, frame_size);
    }
1339 1340 1341 1342

    if (!ost->last_frame)
        ost->last_frame = av_frame_alloc();
    av_frame_unref(ost->last_frame);
1343
    if (next_picture && ost->last_frame)
1344
        av_frame_ref(ost->last_frame, next_picture);
1345 1346
    else
        av_frame_free(&ost->last_frame);
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    return;
error:
    av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
    exit_program(1);
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1352 1353
}

Aneesh Dogra's avatar
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1354
static double psnr(double d)
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1355
{
1356
    return -10.0 * log10(d);
1357
}
1358

1359
static void do_video_stats(OutputStream *ost, int frame_size)
1360
{
1361 1362 1363
    AVCodecContext *enc;
    int frame_number;
    double ti1, bitrate, avg_bitrate;
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1365 1366 1367 1368 1369
    /* this is executed just the first time do_video_stats is called */
    if (!vstats_file) {
        vstats_file = fopen(vstats_filename, "w");
        if (!vstats_file) {
            perror("fopen");
1370
            exit_program(1);
1371
        }
1372
    }
1373

1374
    enc = ost->enc_ctx;
1375
    if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1376
        frame_number = ost->st->nb_frames;
1377 1378 1379 1380 1381 1382 1383
        if (vstats_version <= 1) {
            fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number,
                    ost->quality / (float)FF_QP2LAMBDA);
        } else  {
            fprintf(vstats_file, "out= %2d st= %2d frame= %5d q= %2.1f ", ost->file_index, ost->index, frame_number,
                    ost->quality / (float)FF_QP2LAMBDA);
        }
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1385 1386
        if (ost->error[0]>=0 && (enc->flags & AV_CODEC_FLAG_PSNR))
            fprintf(vstats_file, "PSNR= %6.2f ", psnr(ost->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1387

1388 1389
        fprintf(vstats_file,"f_size= %6d ", frame_size);
        /* compute pts value */
1390
        ti1 = av_stream_get_end_pts(ost->st) * av_q2d(ost->st->time_base);
1391 1392
        if (ti1 < 0.01)
            ti1 = 0.01;
1393

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1394
        bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1395
        avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0;
1396
        fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1397
               (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
1398
        fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(ost->pict_type));
1399
    }
1400
}
1401

1402 1403
static int init_output_stream(OutputStream *ost, char *error, int error_len);

1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416
static void finish_output_stream(OutputStream *ost)
{
    OutputFile *of = output_files[ost->file_index];
    int i;

    ost->finished = ENCODER_FINISHED | MUXER_FINISHED;

    if (of->shortest) {
        for (i = 0; i < of->ctx->nb_streams; i++)
            output_streams[of->ost_index + i]->finished = ENCODER_FINISHED | MUXER_FINISHED;
    }
}

1417
/**
1418 1419 1420 1421 1422
 * Get and encode new output from any of the filtergraphs, without causing
 * activity.
 *
 * @return  0 for success, <0 for severe errors
 */
1423
static int reap_filters(int flush)
1424 1425
{
    AVFrame *filtered_frame = NULL;
1426
    int i;
1427

1428 1429 1430 1431
    /* Reap all buffers present in the buffer sinks */
    for (i = 0; i < nb_output_streams; i++) {
        OutputStream *ost = output_streams[i];
        OutputFile    *of = output_files[ost->file_index];
1432
        AVFilterContext *filter;
1433
        AVCodecContext *enc = ost->enc_ctx;
1434 1435
        int ret = 0;

1436
        if (!ost->filter || !ost->filter->graph->graph)
1437
            continue;
1438
        filter = ost->filter->filter;
1439

1440
        if (!ost->initialized) {
1441
            char error[1024] = "";
1442 1443 1444 1445 1446 1447 1448 1449
            ret = init_output_stream(ost, error, sizeof(error));
            if (ret < 0) {
                av_log(NULL, AV_LOG_ERROR, "Error initializing output stream %d:%d -- %s\n",
                       ost->file_index, ost->index, error);
                exit_program(1);
            }
        }

1450
        if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
1451
            return AVERROR(ENOMEM);
1452
        }
1453 1454 1455
        filtered_frame = ost->filtered_frame;

        while (1) {
1456
            double float_pts = AV_NOPTS_VALUE; // this is identical to filtered_frame.pts but with higher precision
1457
            ret = av_buffersink_get_frame_flags(filter, filtered_frame,
1458 1459 1460 1461
                                               AV_BUFFERSINK_FLAG_NO_REQUEST);
            if (ret < 0) {
                if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
                    av_log(NULL, AV_LOG_WARNING,
1462
                           "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1463
                } else if (flush && ret == AVERROR_EOF) {
1464
                    if (av_buffersink_get_type(filter) == AVMEDIA_TYPE_VIDEO)
1465
                        do_video_out(of, ost, NULL, AV_NOPTS_VALUE);
1466
                }
1467 1468
                break;
            }
1469 1470 1471 1472
            if (ost->finished) {
                av_frame_unref(filtered_frame);
                continue;
            }
1473
            if (filtered_frame->pts != AV_NOPTS_VALUE) {
1474
                int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1475
                AVRational filter_tb = av_buffersink_get_time_base(filter);
1476 1477 1478 1479 1480
                AVRational tb = enc->time_base;
                int extra_bits = av_clip(29 - av_log2(tb.den), 0, 16);

                tb.den <<= extra_bits;
                float_pts =
1481
                    av_rescale_q(filtered_frame->pts, filter_tb, tb) -
1482 1483 1484 1485 1486
                    av_rescale_q(start_time, AV_TIME_BASE_Q, tb);
                float_pts /= 1 << extra_bits;
                // avoid exact midoints to reduce the chance of rounding differences, this can be removed in case the fps code is changed to work with integers
                float_pts += FFSIGN(float_pts) * 1.0 / (1<<17);

1487
                filtered_frame->pts =
1488
                    av_rescale_q(filtered_frame->pts, filter_tb, enc->time_base) -
1489
                    av_rescale_q(start_time, AV_TIME_BASE_Q, enc->time_base);
1490
            }
1491

1492
            switch (av_buffersink_get_type(filter)) {
1493
            case AVMEDIA_TYPE_VIDEO:
1494
                if (!ost->frame_aspect_ratio.num)
1495
                    enc->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1496

1497
                if (debug_ts) {
1498
                    av_log(NULL, AV_LOG_INFO, "filter -> pts:%s pts_time:%s exact:%f time_base:%d/%d\n",
1499
                            av_ts2str(filtered_frame->pts), av_ts2timestr(filtered_frame->pts, &enc->time_base),
1500
                            float_pts,
1501 1502 1503
                            enc->time_base.num, enc->time_base.den);
                }

1504
                do_video_out(of, ost, filtered_frame, float_pts);
1505 1506
                break;
            case AVMEDIA_TYPE_AUDIO:
1507
                if (!(enc->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE) &&
1508
                    enc->channels != filtered_frame->channels) {
1509 1510 1511 1512
                    av_log(NULL, AV_LOG_ERROR,
                           "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
                    break;
                }
1513
                do_audio_out(of, ost, filtered_frame);
1514 1515 1516 1517 1518 1519
                break;
            default:
                // TODO support subtitle filters
                av_assert0(0);
            }

1520
            av_frame_unref(filtered_frame);
1521
        }
1522
    }
1523 1524

    return 0;
1525 1526
}

1527 1528 1529 1530 1531 1532
static void print_final_stats(int64_t total_size)
{
    uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
    uint64_t subtitle_size = 0;
    uint64_t data_size = 0;
    float percent = -1.0;
1533
    int i, j;
1534
    int pass1_used = 1;
1535 1536 1537

    for (i = 0; i < nb_output_streams; i++) {
        OutputStream *ost = output_streams[i];
1538
        switch (ost->enc_ctx->codec_type) {
1539 1540 1541 1542 1543
            case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
            case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
            case AVMEDIA_TYPE_SUBTITLE: subtitle_size += ost->data_size; break;
            default:                 other_size += ost->data_size; break;
        }
1544
        extra_size += ost->enc_ctx->extradata_size;
1545
        data_size  += ost->data_size;
1546
        if (   (ost->enc_ctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2))
1547
            != AV_CODEC_FLAG_PASS1)
1548
            pass1_used = 0;
1549 1550
    }

1551
    if (data_size && total_size>0 && total_size >= data_size)
1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564
        percent = 100.0 * (total_size - data_size) / data_size;

    av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0fkB other streams:%1.0fkB global headers:%1.0fkB muxing overhead: ",
           video_size / 1024.0,
           audio_size / 1024.0,
           subtitle_size / 1024.0,
           other_size / 1024.0,
           extra_size / 1024.0);
    if (percent >= 0.0)
        av_log(NULL, AV_LOG_INFO, "%f%%", percent);
    else
        av_log(NULL, AV_LOG_INFO, "unknown");
    av_log(NULL, AV_LOG_INFO, "\n");
1565 1566 1567 1568 1569 1570 1571

    /* print verbose per-stream stats */
    for (i = 0; i < nb_input_files; i++) {
        InputFile *f = input_files[i];
        uint64_t total_packets = 0, total_size = 0;

        av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n",
1572
               i, f->ctx->url);
1573 1574 1575

        for (j = 0; j < f->nb_streams; j++) {
            InputStream *ist = input_streams[f->ist_index + j];
1576
            enum AVMediaType type = ist->dec_ctx->codec_type;
1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605

            total_size    += ist->data_size;
            total_packets += ist->nb_packets;

            av_log(NULL, AV_LOG_VERBOSE, "  Input stream #%d:%d (%s): ",
                   i, j, media_type_string(type));
            av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ",
                   ist->nb_packets, ist->data_size);

            if (ist->decoding_needed) {
                av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded",
                       ist->frames_decoded);
                if (type == AVMEDIA_TYPE_AUDIO)
                    av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded);
                av_log(NULL, AV_LOG_VERBOSE, "; ");
            }

            av_log(NULL, AV_LOG_VERBOSE, "\n");
        }

        av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n",
               total_packets, total_size);
    }

    for (i = 0; i < nb_output_files; i++) {
        OutputFile *of = output_files[i];
        uint64_t total_packets = 0, total_size = 0;

        av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
1606
               i, of->ctx->url);
1607 1608 1609

        for (j = 0; j < of->ctx->nb_streams; j++) {
            OutputStream *ost = output_streams[of->ost_index + j];
1610
            enum AVMediaType type = ost->enc_ctx->codec_type;
1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633

            total_size    += ost->data_size;
            total_packets += ost->packets_written;

            av_log(NULL, AV_LOG_VERBOSE, "  Output stream #%d:%d (%s): ",
                   i, j, media_type_string(type));
            if (ost->encoding_needed) {
                av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
                       ost->frames_encoded);
                if (type == AVMEDIA_TYPE_AUDIO)
                    av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
                av_log(NULL, AV_LOG_VERBOSE, "; ");
            }

            av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
                   ost->packets_written, ost->data_size);

            av_log(NULL, AV_LOG_VERBOSE, "\n");
        }

        av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
               total_packets, total_size);
    }
1634
    if(video_size + data_size + audio_size + subtitle_size + extra_size == 0){
1635 1636 1637 1638 1639 1640
        av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded ");
        if (pass1_used) {
            av_log(NULL, AV_LOG_WARNING, "\n");
        } else {
            av_log(NULL, AV_LOG_WARNING, "(check -ss / -t / -frames parameters if used)\n");
        }
1641 1642 1643
    }
}

1644
static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1645
{
1646
    AVBPrint buf, buf_script;
1647 1648 1649 1650 1651
    OutputStream *ost;
    AVFormatContext *oc;
    int64_t total_size;
    AVCodecContext *enc;
    int frame_number, vid, i;
1652
    double bitrate;
1653
    double speed;
1654
    int64_t pts = INT64_MIN + 1;
1655 1656
    static int64_t last_time = -1;
    static int qp_histogram[52];
1657
    int hours, mins, secs, us;
1658
    const char *hours_sign;
1659
    int ret;
1660
    float t;
1661

1662
    if (!print_stats && !is_last_report && !progress_avio)
1663
        return;
1664

1665 1666 1667
    if (!is_last_report) {
        if (last_time == -1) {
            last_time = cur_time;
1668
            return;
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1669
        }
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        if ((cur_time - last_time) < 500000)
            return;
        last_time = cur_time;
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    }

1675 1676
    t = (cur_time-timer_start) / 1000000.0;

1677

1678
    oc = output_files[0]->ctx;
1679

1680
    total_size = avio_size(oc->pb);
1681
    if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
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1682
        total_size = avio_tell(oc->pb);
1683

1684
    vid = 0;
1685
    av_bprint_init(&buf, 0, AV_BPRINT_SIZE_AUTOMATIC);
1686
    av_bprint_init(&buf_script, 0, AV_BPRINT_SIZE_AUTOMATIC);
1687
    for (i = 0; i < nb_output_streams; i++) {
1688
        float q = -1;
1689
        ost = output_streams[i];
1690
        enc = ost->enc_ctx;
1691 1692 1693
        if (!ost->stream_copy)
            q = ost->quality / (float) FF_QP2LAMBDA;

1694
        if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1695
            av_bprintf(&buf, "q=%2.1f ", q);
1696 1697
            av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
                       ost->file_index, ost->index, q);
1698
        }
1699
        if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1700
            float fps;
1701

1702
            frame_number = ost->frame_number;
1703
            fps = t > 1 ? frame_number / t : 0;
1704
            av_bprintf(&buf, "frame=%5d fps=%3.*f q=%3.1f ",
1705 1706
                     frame_number, fps < 9.95, fps, q);
            av_bprintf(&buf_script, "frame=%d\n", frame_number);
1707
            av_bprintf(&buf_script, "fps=%.2f\n", fps);
1708 1709
            av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
                       ost->file_index, ost->index, q);
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1710
            if (is_last_report)
1711
                av_bprintf(&buf, "L");
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1712
            if (qp_hist) {
1713 1714
                int j;
                int qp = lrintf(q);
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1715
                if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1716
                    qp_histogram[qp]++;
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1717
                for (j = 0; j < 32; j++)
1718
                    av_bprintf(&buf, "%X", av_log2(qp_histogram[j] + 1));
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1719
            }
1720

1721
            if ((enc->flags & AV_CODEC_FLAG_PSNR) && (ost->pict_type != AV_PICTURE_TYPE_NONE || is_last_report)) {
1722
                int j;
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1723 1724
                double error, error_sum = 0;
                double scale, scale_sum = 0;
1725
                double p;
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1726
                char type[3] = { 'Y','U','V' };
1727
                av_bprintf(&buf, "PSNR=");
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                for (j = 0; j < 3; j++) {
                    if (is_last_report) {
                        error = enc->error[j];
                        scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
                    } else {
1733
                        error = ost->error[j];
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1734
                        scale = enc->width * enc->height * 255.0 * 255.0;
1735
                    }
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1736 1737
                    if (j)
                        scale /= 4;
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                    error_sum += error;
                    scale_sum += scale;
1740
                    p = psnr(error / scale);
1741
                    av_bprintf(&buf, "%c:%2.2f ", type[j], p);
1742
                    av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1743
                               ost->file_index, ost->index, type[j] | 32, p);
1744
                }
1745
                p = psnr(error_sum / scale_sum);
1746
                av_bprintf(&buf, "*:%2.2f ", psnr(error_sum / scale_sum));
1747 1748
                av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
                           ost->file_index, ost->index, p);
1749 1750
            }
            vid = 1;
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1751
        }
1752
        /* compute min output value */
1753 1754
        if (av_stream_get_end_pts(ost->st) != AV_NOPTS_VALUE)
            pts = FFMAX(pts, av_rescale_q(av_stream_get_end_pts(ost->st),
1755
                                          ost->st->time_base, AV_TIME_BASE_Q));
1756
        if (is_last_report)
1757
            nb_frames_drop += ost->last_dropped;
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1758 1759
    }

1760 1761
    secs = FFABS(pts) / AV_TIME_BASE;
    us = FFABS(pts) % AV_TIME_BASE;
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    mins = secs / 60;
    secs %= 60;
    hours = mins / 60;
    mins %= 60;
1766
    hours_sign = (pts < 0) ? "-" : "";
1767

1768
    bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1769
    speed = t != 0.0 ? (double)pts / AV_TIME_BASE / t : -1;
1770

1771 1772
    if (total_size < 0) av_bprintf(&buf, "size=N/A time=");
    else                av_bprintf(&buf, "size=%8.0fkB time=", total_size / 1024.0);
1773
    if (pts == AV_NOPTS_VALUE) {
1774
        av_bprintf(&buf, "N/A ");
1775
    } else {
1776 1777
        av_bprintf(&buf, "%s%02d:%02d:%02d.%02d ",
                   hours_sign, hours, mins, secs, (100 * us) / AV_TIME_BASE);
1778
    }
1779 1780

    if (bitrate < 0) {
1781
        av_bprintf(&buf, "bitrate=N/A");
1782 1783
        av_bprintf(&buf_script, "bitrate=N/A\n");
    }else{
1784
        av_bprintf(&buf, "bitrate=%6.1fkbits/s", bitrate);
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        av_bprintf(&buf_script, "bitrate=%6.1fkbits/s\n", bitrate);
    }

1788 1789
    if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
    else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1790
    if (pts == AV_NOPTS_VALUE) {
1791
        av_bprintf(&buf_script, "out_time_us=N/A\n");
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        av_bprintf(&buf_script, "out_time_ms=N/A\n");
        av_bprintf(&buf_script, "out_time=N/A\n");
    } else {
1795
        av_bprintf(&buf_script, "out_time_us=%"PRId64"\n", pts);
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        av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
        av_bprintf(&buf_script, "out_time=%s%02d:%02d:%02d.%06d\n",
                   hours_sign, hours, mins, secs, us);
    }
1800

1801
    if (nb_frames_dup || nb_frames_drop)
1802
        av_bprintf(&buf, " dup=%d drop=%d", nb_frames_dup, nb_frames_drop);
1803 1804
    av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
    av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1805

1806
    if (speed < 0) {
1807
        av_bprintf(&buf, " speed=N/A");
1808 1809
        av_bprintf(&buf_script, "speed=N/A\n");
    } else {
1810
        av_bprintf(&buf, " speed=%4.3gx", speed);
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        av_bprintf(&buf_script, "speed=%4.3gx\n", speed);
    }

1814
    if (print_stats || is_last_report) {
1815
        const char end = is_last_report ? '\n' : '\r';
1816
        if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1817
            fprintf(stderr, "%s    %c", buf.str, end);
1818
        } else
1819
            av_log(NULL, AV_LOG_INFO, "%s    %c", buf.str, end);
1820

1821
        fflush(stderr);
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1822
    }
1823
    av_bprint_finalize(&buf, NULL);
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1824

1825 1826 1827 1828 1829 1830 1831 1832
    if (progress_avio) {
        av_bprintf(&buf_script, "progress=%s\n",
                   is_last_report ? "end" : "continue");
        avio_write(progress_avio, buf_script.str,
                   FFMIN(buf_script.len, buf_script.size - 1));
        avio_flush(progress_avio);
        av_bprint_finalize(&buf_script, NULL);
        if (is_last_report) {
1833 1834 1835
            if ((ret = avio_closep(&progress_avio)) < 0)
                av_log(NULL, AV_LOG_ERROR,
                       "Error closing progress log, loss of information possible: %s\n", av_err2str(ret));
1836 1837
        }
    }
1838

1839 1840
    if (is_last_report)
        print_final_stats(total_size);
1841
}
1842

1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855
static void ifilter_parameters_from_codecpar(InputFilter *ifilter, AVCodecParameters *par)
{
    // We never got any input. Set a fake format, which will
    // come from libavformat.
    ifilter->format                 = par->format;
    ifilter->sample_rate            = par->sample_rate;
    ifilter->channels               = par->channels;
    ifilter->channel_layout         = par->channel_layout;
    ifilter->width                  = par->width;
    ifilter->height                 = par->height;
    ifilter->sample_aspect_ratio    = par->sample_aspect_ratio;
}

1856
static void flush_encoders(void)
1857 1858
{
    int i, ret;
1859

1860
    for (i = 0; i < nb_output_streams; i++) {
1861
        OutputStream   *ost = output_streams[i];
1862
        AVCodecContext *enc = ost->enc_ctx;
1863
        OutputFile      *of = output_files[ost->file_index];
1864

1865
        if (!ost->encoding_needed)
1866 1867
            continue;

1868 1869 1870 1871
        // Try to enable encoding with no input frames.
        // Maybe we should just let encoding fail instead.
        if (!ost->initialized) {
            FilterGraph *fg = ost->filter->graph;
1872
            char error[1024] = "";
1873 1874 1875 1876 1877 1878 1879 1880 1881

            av_log(NULL, AV_LOG_WARNING,
                   "Finishing stream %d:%d without any data written to it.\n",
                   ost->file_index, ost->st->index);

            if (ost->filter && !fg->graph) {
                int x;
                for (x = 0; x < fg->nb_inputs; x++) {
                    InputFilter *ifilter = fg->inputs[x];
1882 1883
                    if (ifilter->format < 0)
                        ifilter_parameters_from_codecpar(ifilter, ifilter->ist->st->codecpar);
1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905
                }

                if (!ifilter_has_all_input_formats(fg))
                    continue;

                ret = configure_filtergraph(fg);
                if (ret < 0) {
                    av_log(NULL, AV_LOG_ERROR, "Error configuring filter graph\n");
                    exit_program(1);
                }

                finish_output_stream(ost);
            }

            ret = init_output_stream(ost, error, sizeof(error));
            if (ret < 0) {
                av_log(NULL, AV_LOG_ERROR, "Error initializing output stream %d:%d -- %s\n",
                       ost->file_index, ost->index, error);
                exit_program(1);
            }
        }

1906
        if (enc->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1907 1908
            continue;

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1909 1910 1911
        if (enc->codec_type != AVMEDIA_TYPE_VIDEO && enc->codec_type != AVMEDIA_TYPE_AUDIO)
            continue;

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1912
        for (;;) {
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1913
            const char *desc = NULL;
1914 1915
            AVPacket pkt;
            int pkt_size;
1916

1917
            switch (enc->codec_type) {
1918
            case AVMEDIA_TYPE_AUDIO:
1919
                desc   = "audio";
1920 1921
                break;
            case AVMEDIA_TYPE_VIDEO:
1922
                desc   = "video";
1923 1924
                break;
            default:
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1925
                av_assert0(0);
1926 1927
            }

1928 1929 1930
            av_init_packet(&pkt);
            pkt.data = NULL;
            pkt.size = 0;
1931

1932
            update_benchmark(NULL);
1933

1934 1935 1936
            while ((ret = avcodec_receive_packet(enc, &pkt)) == AVERROR(EAGAIN)) {
                ret = avcodec_send_frame(enc, NULL);
                if (ret < 0) {
1937 1938 1939
                    av_log(NULL, AV_LOG_FATAL, "%s encoding failed: %s\n",
                           desc,
                           av_err2str(ret));
1940
                    exit_program(1);
1941
                }
1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967
            }

            update_benchmark("flush_%s %d.%d", desc, ost->file_index, ost->index);
            if (ret < 0 && ret != AVERROR_EOF) {
                av_log(NULL, AV_LOG_FATAL, "%s encoding failed: %s\n",
                       desc,
                       av_err2str(ret));
                exit_program(1);
            }
            if (ost->logfile && enc->stats_out) {
                fprintf(ost->logfile, "%s", enc->stats_out);
            }
            if (ret == AVERROR_EOF) {
                output_packet(of, &pkt, ost, 1);
                break;
            }
            if (ost->finished & MUXER_FINISHED) {
                av_packet_unref(&pkt);
                continue;
            }
            av_packet_rescale_ts(&pkt, enc->time_base, ost->mux_timebase);
            pkt_size = pkt.size;
            output_packet(of, &pkt, ost, 0);
            if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
                do_video_stats(ost, pkt_size);
            }
1968 1969
        }
    }
1970
}
1971

1972 1973 1974 1975 1976
/*
 * Check whether a packet from ist should be written into ost at this time
 */
static int check_output_constraints(InputStream *ist, OutputStream *ost)
{
1977 1978
    OutputFile *of = output_files[ost->file_index];
    int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1979

1980 1981
    if (ost->source_index != ist_index)
        return 0;
1982

1983 1984 1985
    if (ost->finished)
        return 0;

1986
    if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
1987
        return 0;
1988

1989 1990
    return 1;
}
1991

1992 1993
static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
{
1994
    OutputFile *of = output_files[ost->file_index];
1995
    InputFile   *f = input_files [ist->file_index];
1996
    int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1997
    int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->mux_timebase);
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1998 1999 2000
    AVPacket opkt = { 0 };

    av_init_packet(&opkt);
2001

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2002 2003 2004 2005 2006 2007
    // EOF: flush output bitstream filters.
    if (!pkt) {
        output_packet(of, &opkt, ost, 1);
        return;
    }

2008 2009 2010 2011
    if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
        !ost->copy_initial_nonkeyframes)
        return;

2012 2013 2014 2015 2016 2017 2018
    if (!ost->frame_number && !ost->copy_prior_start) {
        int64_t comp_start = start_time;
        if (copy_ts && f->start_time != AV_NOPTS_VALUE)
            comp_start = FFMAX(start_time, f->start_time + f->ts_offset);
        if (pkt->pts == AV_NOPTS_VALUE ?
            ist->pts < comp_start :
            pkt->pts < av_rescale_q(comp_start, AV_TIME_BASE_Q, ist->st->time_base))
2019 2020
            return;
    }
2021

2022
    if (of->recording_time != INT64_MAX &&
2023
        ist->pts >= of->recording_time + start_time) {
2024
        close_output_stream(ost);
2025
        return;
2026 2027
    }

2028 2029
    if (f->recording_time != INT64_MAX) {
        start_time = f->ctx->start_time;
2030
        if (f->start_time != AV_NOPTS_VALUE && copy_ts)
2031
            start_time += f->start_time;
2032 2033
        if (ist->pts >= f->recording_time + start_time) {
            close_output_stream(ost);
2034 2035 2036 2037
            return;
        }
    }

2038
    /* force the input stream PTS */
2039
    if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
2040
        ost->sync_opts++;
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2041

2042
    if (pkt->pts != AV_NOPTS_VALUE)
2043
        opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->mux_timebase) - ost_tb_start_time;
2044 2045
    else
        opkt.pts = AV_NOPTS_VALUE;
2046

2047
    if (pkt->dts == AV_NOPTS_VALUE)
2048
        opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->mux_timebase);
2049
    else
2050
        opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->mux_timebase);
2051
    opkt.dts -= ost_tb_start_time;
2052

2053
    if (ost->st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
2054
        int duration = av_get_audio_frame_duration(ist->dec_ctx, pkt->size);
2055
        if(!duration)
2056
            duration = ist->dec_ctx->frame_size;
2057
        opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
2058
                                               (AVRational){1, ist->dec_ctx->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
2059
                                               ost->mux_timebase) - ost_tb_start_time;
2060 2061
    }

2062 2063
    opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->mux_timebase);

2064
    opkt.flags    = pkt->flags;
2065

2066 2067 2068 2069 2070
    if (pkt->buf) {
        opkt.buf = av_buffer_ref(pkt->buf);
        if (!opkt.buf)
            exit_program(1);
    }
2071 2072 2073
    opkt.data = pkt->data;
    opkt.size = pkt->size;

2074
    av_copy_packet_side_data(&opkt, pkt);
2075

2076
    output_packet(of, &opkt, ost, 0);
2077
}
2078

2079
int guess_input_channel_layout(InputStream *ist)
2080
{
2081
    AVCodecContext *dec = ist->dec_ctx;
2082

2083 2084
    if (!dec->channel_layout) {
        char layout_name[256];
2085

2086 2087
        if (dec->channels > ist->guess_layout_max)
            return 0;
2088 2089 2090 2091 2092
        dec->channel_layout = av_get_default_channel_layout(dec->channels);
        if (!dec->channel_layout)
            return 0;
        av_get_channel_layout_string(layout_name, sizeof(layout_name),
                                     dec->channels, dec->channel_layout);
2093
        av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
2094
               "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
2095
    }
2096
    return 1;
2097 2098
}

2099
static void check_decode_result(InputStream *ist, int *got_output, int ret)
2100 2101 2102 2103 2104 2105
{
    if (*got_output || ret<0)
        decode_error_stat[ret<0] ++;

    if (ret < 0 && exit_on_error)
        exit_program(1);
2106

2107
    if (*got_output && ist) {
2108
        if (ist->decoded_frame->decode_error_flags || (ist->decoded_frame->flags & AV_FRAME_FLAG_CORRUPT)) {
2109 2110 2111 2112
            av_log(NULL, exit_on_error ? AV_LOG_FATAL : AV_LOG_WARNING,
                   "%s: corrupt decoded frame in stream %d\n", input_files[ist->file_index]->ctx->url, ist->st->index);
            if (exit_on_error)
                exit_program(1);
2113 2114
        }
    }
2115 2116
}

2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148
// Filters can be configured only if the formats of all inputs are known.
static int ifilter_has_all_input_formats(FilterGraph *fg)
{
    int i;
    for (i = 0; i < fg->nb_inputs; i++) {
        if (fg->inputs[i]->format < 0 && (fg->inputs[i]->type == AVMEDIA_TYPE_AUDIO ||
                                          fg->inputs[i]->type == AVMEDIA_TYPE_VIDEO))
            return 0;
    }
    return 1;
}

static int ifilter_send_frame(InputFilter *ifilter, AVFrame *frame)
{
    FilterGraph *fg = ifilter->graph;
    int need_reinit, ret, i;

    /* determine if the parameters for this input changed */
    need_reinit = ifilter->format != frame->format;

    switch (ifilter->ist->st->codecpar->codec_type) {
    case AVMEDIA_TYPE_AUDIO:
        need_reinit |= ifilter->sample_rate    != frame->sample_rate ||
                       ifilter->channels       != frame->channels ||
                       ifilter->channel_layout != frame->channel_layout;
        break;
    case AVMEDIA_TYPE_VIDEO:
        need_reinit |= ifilter->width  != frame->width ||
                       ifilter->height != frame->height;
        break;
    }

2149 2150 2151 2152 2153 2154 2155
    if (!ifilter->ist->reinit_filters && fg->graph)
        need_reinit = 0;

    if (!!ifilter->hw_frames_ctx != !!frame->hw_frames_ctx ||
        (ifilter->hw_frames_ctx && ifilter->hw_frames_ctx->data != frame->hw_frames_ctx->data))
        need_reinit = 1;

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    if (need_reinit) {
        ret = ifilter_parameters_from_frame(ifilter, frame);
        if (ret < 0)
            return ret;
    }

    /* (re)init the graph if possible, otherwise buffer the frame and return */
    if (need_reinit || !fg->graph) {
        for (i = 0; i < fg->nb_inputs; i++) {
            if (!ifilter_has_all_input_formats(fg)) {
                AVFrame *tmp = av_frame_clone(frame);
                if (!tmp)
                    return AVERROR(ENOMEM);
                av_frame_unref(frame);

                if (!av_fifo_space(ifilter->frame_queue)) {
                    ret = av_fifo_realloc2(ifilter->frame_queue, 2 * av_fifo_size(ifilter->frame_queue));
2173 2174
                    if (ret < 0) {
                        av_frame_free(&tmp);
2175
                        return ret;
2176
                    }
2177 2178 2179 2180 2181 2182 2183 2184
                }
                av_fifo_generic_write(ifilter->frame_queue, &tmp, sizeof(tmp), NULL);
                return 0;
            }
        }

        ret = reap_filters(1);
        if (ret < 0 && ret != AVERROR_EOF) {
2185
            av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", av_err2str(ret));
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            return ret;
        }

        ret = configure_filtergraph(fg);
        if (ret < 0) {
            av_log(NULL, AV_LOG_ERROR, "Error reinitializing filters!\n");
            return ret;
        }
    }

    ret = av_buffersrc_add_frame_flags(ifilter->filter, frame, AV_BUFFERSRC_FLAG_PUSH);
    if (ret < 0) {
2198 2199
        if (ret != AVERROR_EOF)
            av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", av_err2str(ret));
2200 2201 2202 2203 2204 2205
        return ret;
    }

    return 0;
}

2206
static int ifilter_send_eof(InputFilter *ifilter, int64_t pts)
2207
{
2208
    int ret;
2209 2210 2211 2212

    ifilter->eof = 1;

    if (ifilter->filter) {
2213
        ret = av_buffersrc_close(ifilter->filter, pts, AV_BUFFERSRC_FLAG_PUSH);
2214 2215 2216 2217
        if (ret < 0)
            return ret;
    } else {
        // the filtergraph was never configured
2218 2219 2220 2221 2222 2223
        if (ifilter->format < 0)
            ifilter_parameters_from_codecpar(ifilter, ifilter->ist->st->codecpar);
        if (ifilter->format < 0 && (ifilter->type == AVMEDIA_TYPE_AUDIO || ifilter->type == AVMEDIA_TYPE_VIDEO)) {
            av_log(NULL, AV_LOG_ERROR, "Cannot determine format of input stream %d:%d after EOF\n", ifilter->ist->file_index, ifilter->ist->st->index);
            return AVERROR_INVALIDDATA;
        }
2224 2225 2226 2227 2228
    }

    return 0;
}

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2229 2230
// This does not quite work like avcodec_decode_audio4/avcodec_decode_video2.
// There is the following difference: if you got a frame, you must call
2231 2232
// it again with pkt=NULL. pkt==NULL is treated differently from pkt->size==0
// (pkt==NULL means get more output, pkt->size==0 is a flush/drain packet)
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static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
{
    int ret;

    *got_frame = 0;

    if (pkt) {
        ret = avcodec_send_packet(avctx, pkt);
        // In particular, we don't expect AVERROR(EAGAIN), because we read all
        // decoded frames with avcodec_receive_frame() until done.
        if (ret < 0 && ret != AVERROR_EOF)
            return ret;
    }

    ret = avcodec_receive_frame(avctx, frame);
    if (ret < 0 && ret != AVERROR(EAGAIN))
        return ret;
    if (ret >= 0)
        *got_frame = 1;

    return 0;
}

2256 2257 2258 2259 2260
static int send_frame_to_filters(InputStream *ist, AVFrame *decoded_frame)
{
    int i, ret;
    AVFrame *f;

2261
    av_assert1(ist->nb_filters > 0); /* ensure ret is initialized */
2262 2263 2264 2265 2266 2267 2268 2269
    for (i = 0; i < ist->nb_filters; i++) {
        if (i < ist->nb_filters - 1) {
            f = ist->filter_frame;
            ret = av_frame_ref(f, decoded_frame);
            if (ret < 0)
                break;
        } else
            f = decoded_frame;
2270
        ret = ifilter_send_frame(ist->filters[i], f);
2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281
        if (ret == AVERROR_EOF)
            ret = 0; /* ignore */
        if (ret < 0) {
            av_log(NULL, AV_LOG_ERROR,
                   "Failed to inject frame into filter network: %s\n", av_err2str(ret));
            break;
        }
    }
    return ret;
}

2282 2283
static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output,
                        int *decode_failed)
2284
{
2285
    AVFrame *decoded_frame;
2286
    AVCodecContext *avctx = ist->dec_ctx;
2287
    int ret, err = 0;
2288
    AVRational decoded_frame_tb;
2289

2290
    if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
2291
        return AVERROR(ENOMEM);
2292 2293
    if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
        return AVERROR(ENOMEM);
2294
    decoded_frame = ist->decoded_frame;
2295

2296
    update_benchmark(NULL);
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2297
    ret = decode(avctx, decoded_frame, got_output, pkt);
2298
    update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
2299 2300
    if (ret < 0)
        *decode_failed = 1;
2301 2302

    if (ret >= 0 && avctx->sample_rate <= 0) {
2303
        av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
2304
        ret = AVERROR_INVALIDDATA;
2305
    }
2306

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2307 2308
    if (ret != AVERROR_EOF)
        check_decode_result(ist, got_output, ret);
2309

2310
    if (!*got_output || ret < 0)
2311
        return ret;
2312

2313 2314 2315
    ist->samples_decoded += decoded_frame->nb_samples;
    ist->frames_decoded++;

2316 2317 2318 2319 2320 2321
    /* increment next_dts to use for the case where the input stream does not
       have timestamps or there are multiple frames in the packet */
    ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
                     avctx->sample_rate;
    ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
                     avctx->sample_rate;
2322

2323
    if (decoded_frame->pts != AV_NOPTS_VALUE) {
2324
        decoded_frame_tb   = ist->st->time_base;
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2325
    } else if (pkt && pkt->pts != AV_NOPTS_VALUE) {
2326 2327 2328 2329 2330 2331
        decoded_frame->pts = pkt->pts;
        decoded_frame_tb   = ist->st->time_base;
    }else {
        decoded_frame->pts = ist->dts;
        decoded_frame_tb   = AV_TIME_BASE_Q;
    }
2332
    if (decoded_frame->pts != AV_NOPTS_VALUE)
2333
        decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
2334 2335
                                              (AVRational){1, avctx->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
                                              (AVRational){1, avctx->sample_rate});
2336
    ist->nb_samples = decoded_frame->nb_samples;
2337
    err = send_frame_to_filters(ist, decoded_frame);
2338

2339 2340 2341
    av_frame_unref(ist->filter_frame);
    av_frame_unref(decoded_frame);
    return err < 0 ? err : ret;
2342 2343
}

2344
static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *duration_pts, int eof,
2345
                        int *decode_failed)
2346
{
2347
    AVFrame *decoded_frame;
2348
    int i, ret = 0, err = 0;
2349
    int64_t best_effort_timestamp;
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2350 2351 2352 2353 2354 2355 2356 2357
    int64_t dts = AV_NOPTS_VALUE;
    AVPacket avpkt;

    // With fate-indeo3-2, we're getting 0-sized packets before EOF for some
    // reason. This seems like a semi-critical bug. Don't trigger EOF, and
    // skip the packet.
    if (!eof && pkt && pkt->size == 0)
        return 0;
2358

2359 2360 2361
    if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
        return AVERROR(ENOMEM);
    if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
2362
        return AVERROR(ENOMEM);
2363
    decoded_frame = ist->decoded_frame;
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    if (ist->dts != AV_NOPTS_VALUE)
        dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
    if (pkt) {
        avpkt = *pkt;
        avpkt.dts = dts; // ffmpeg.c probably shouldn't do this
    }

    // The old code used to set dts on the drain packet, which does not work
    // with the new API anymore.
    if (eof) {
        void *new = av_realloc_array(ist->dts_buffer, ist->nb_dts_buffer + 1, sizeof(ist->dts_buffer[0]));
        if (!new)
            return AVERROR(ENOMEM);
        ist->dts_buffer = new;
        ist->dts_buffer[ist->nb_dts_buffer++] = dts;
    }
2380

2381
    update_benchmark(NULL);
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2382
    ret = decode(ist->dec_ctx, decoded_frame, got_output, pkt ? &avpkt : NULL);
2383
    update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
2384 2385
    if (ret < 0)
        *decode_failed = 1;
2386 2387 2388

    // The following line may be required in some cases where there is no parser
    // or the parser does not has_b_frames correctly
2389
    if (ist->st->codecpar->video_delay < ist->dec_ctx->has_b_frames) {
2390
        if (ist->dec_ctx->codec_id == AV_CODEC_ID_H264) {
2391
            ist->st->codecpar->video_delay = ist->dec_ctx->has_b_frames;
2392
        } else
2393
            av_log(ist->dec_ctx, AV_LOG_WARNING,
2394
                   "video_delay is larger in decoder than demuxer %d > %d.\n"
2395 2396
                   "If you want to help, upload a sample "
                   "of this file to ftp://upload.ffmpeg.org/incoming/ "
2397
                   "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n",
2398
                   ist->dec_ctx->has_b_frames,
2399
                   ist->st->codecpar->video_delay);
2400
    }
2401

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2402 2403
    if (ret != AVERROR_EOF)
        check_decode_result(ist, got_output, ret);
2404

2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418
    if (*got_output && ret >= 0) {
        if (ist->dec_ctx->width  != decoded_frame->width ||
            ist->dec_ctx->height != decoded_frame->height ||
            ist->dec_ctx->pix_fmt != decoded_frame->format) {
            av_log(NULL, AV_LOG_DEBUG, "Frame parameters mismatch context %d,%d,%d != %d,%d,%d\n",
                decoded_frame->width,
                decoded_frame->height,
                decoded_frame->format,
                ist->dec_ctx->width,
                ist->dec_ctx->height,
                ist->dec_ctx->pix_fmt);
        }
    }

2419
    if (!*got_output || ret < 0)
2420
        return ret;
2421

2422 2423
    if(ist->top_field_first>=0)
        decoded_frame->top_field_first = ist->top_field_first;
2424

2425 2426
    ist->frames_decoded++;

2427
    if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
2428
        err = ist->hwaccel_retrieve_data(ist->dec_ctx, decoded_frame);
2429 2430 2431
        if (err < 0)
            goto fail;
    }
2432 2433
    ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;

2434
    best_effort_timestamp= decoded_frame->best_effort_timestamp;
2435
    *duration_pts = decoded_frame->pkt_duration;
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2436

2437 2438 2439
    if (ist->framerate.num)
        best_effort_timestamp = ist->cfr_next_pts++;

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2440 2441 2442 2443 2444 2445 2446 2447
    if (eof && best_effort_timestamp == AV_NOPTS_VALUE && ist->nb_dts_buffer > 0) {
        best_effort_timestamp = ist->dts_buffer[0];

        for (i = 0; i < ist->nb_dts_buffer - 1; i++)
            ist->dts_buffer[i] = ist->dts_buffer[i + 1];
        ist->nb_dts_buffer--;
    }

2448 2449 2450 2451 2452 2453
    if(best_effort_timestamp != AV_NOPTS_VALUE) {
        int64_t ts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);

        if (ts != AV_NOPTS_VALUE)
            ist->next_pts = ist->pts = ts;
    }
2454

2455 2456
    if (debug_ts) {
        av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
2457 2458 2459 2460 2461 2462 2463
               "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d time_base:%d/%d\n",
               ist->st->index, av_ts2str(decoded_frame->pts),
               av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
               best_effort_timestamp,
               av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
               decoded_frame->key_frame, decoded_frame->pict_type,
               ist->st->time_base.num, ist->st->time_base.den);
2464 2465
    }

2466 2467
    if (ist->st->sample_aspect_ratio.num)
        decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2468

2469
    err = send_frame_to_filters(ist, decoded_frame);
2470

2471
fail:
2472 2473 2474
    av_frame_unref(ist->filter_frame);
    av_frame_unref(decoded_frame);
    return err < 0 ? err : ret;
2475 2476
}

2477 2478
static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output,
                               int *decode_failed)
2479
{
2480
    AVSubtitle subtitle;
2481
    int free_sub = 1;
2482
    int i, ret = avcodec_decode_subtitle2(ist->dec_ctx,
2483
                                          &subtitle, got_output, pkt);
2484

2485
    check_decode_result(NULL, got_output, ret);
2486

2487
    if (ret < 0 || !*got_output) {
2488
        *decode_failed = 1;
2489 2490
        if (!pkt->size)
            sub2video_flush(ist);
2491
        return ret;
2492
    }
2493

2494
    if (ist->fix_sub_duration) {
2495
        int end = 1;
2496
        if (ist->prev_sub.got_output) {
2497 2498
            end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
                             1000, AV_TIME_BASE);
2499
            if (end < ist->prev_sub.subtitle.end_display_time) {
2500
                av_log(ist->dec_ctx, AV_LOG_DEBUG,
2501
                       "Subtitle duration reduced from %"PRId32" to %d%s\n",
2502 2503
                       ist->prev_sub.subtitle.end_display_time, end,
                       end <= 0 ? ", dropping it" : "");
2504 2505 2506 2507 2508 2509
                ist->prev_sub.subtitle.end_display_time = end;
            }
        }
        FFSWAP(int,        *got_output, ist->prev_sub.got_output);
        FFSWAP(int,        ret,         ist->prev_sub.ret);
        FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
2510 2511
        if (end <= 0)
            goto out;
2512 2513
    }

2514 2515 2516
    if (!*got_output)
        return ret;

2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531
    if (ist->sub2video.frame) {
        sub2video_update(ist, &subtitle);
    } else if (ist->nb_filters) {
        if (!ist->sub2video.sub_queue)
            ist->sub2video.sub_queue = av_fifo_alloc(8 * sizeof(AVSubtitle));
        if (!ist->sub2video.sub_queue)
            exit_program(1);
        if (!av_fifo_space(ist->sub2video.sub_queue)) {
            ret = av_fifo_realloc2(ist->sub2video.sub_queue, 2 * av_fifo_size(ist->sub2video.sub_queue));
            if (ret < 0)
                exit_program(1);
        }
        av_fifo_generic_write(ist->sub2video.sub_queue, &subtitle, sizeof(subtitle), NULL);
        free_sub = 0;
    }
2532

2533
    if (!subtitle.num_rects)
2534
        goto out;
2535

2536 2537
    ist->frames_decoded++;

2538
    for (i = 0; i < nb_output_streams; i++) {
2539
        OutputStream *ost = output_streams[i];
2540

2541 2542
        if (!check_output_constraints(ist, ost) || !ost->encoding_needed
            || ost->enc->type != AVMEDIA_TYPE_SUBTITLE)
2543
            continue;
2544

2545
        do_subtitle_out(output_files[ost->file_index], ost, &subtitle);
2546
    }
2547

2548
out:
2549 2550
    if (free_sub)
        avsubtitle_free(&subtitle);
2551
    return ret;
2552
}
2553

2554 2555
static int send_filter_eof(InputStream *ist)
{
2556
    int i, ret;
2557 2558 2559 2560
    /* TODO keep pts also in stream time base to avoid converting back */
    int64_t pts = av_rescale_q_rnd(ist->pts, AV_TIME_BASE_Q, ist->st->time_base,
                                   AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX);

2561
    for (i = 0; i < ist->nb_filters; i++) {
2562
        ret = ifilter_send_eof(ist->filters[i], pts);
2563 2564
        if (ret < 0)
            return ret;
2565 2566 2567 2568
    }
    return 0;
}

2569
/* pkt = NULL means EOF (needed to flush decoder buffers) */
2570
static int process_input_packet(InputStream *ist, const AVPacket *pkt, int no_eof)
2571
{
2572
    int ret = 0, i;
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2573 2574
    int repeating = 0;
    int eof_reached = 0;
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Fabrice Bellard committed
2575

2576
    AVPacket avpkt;
2577
    if (!ist->saw_first_ts) {
2578
        ist->dts = ist->st->avg_frame_rate.num ? - ist->dec_ctx->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
2579
        ist->pts = 0;
2580
        if (pkt && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2581 2582
            ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
            ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2583
        }
2584 2585
        ist->saw_first_ts = 1;
    }
2586

2587
    if (ist->next_dts == AV_NOPTS_VALUE)
2588 2589 2590
        ist->next_dts = ist->dts;
    if (ist->next_pts == AV_NOPTS_VALUE)
        ist->next_pts = ist->pts;
2591

2592
    if (!pkt) {
2593 2594 2595 2596 2597 2598 2599
        /* EOF handling */
        av_init_packet(&avpkt);
        avpkt.data = NULL;
        avpkt.size = 0;
    } else {
        avpkt = *pkt;
    }
2600

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2601
    if (pkt && pkt->dts != AV_NOPTS_VALUE) {
2602
        ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2603
        if (ist->dec_ctx->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2604
            ist->next_pts = ist->pts = ist->dts;
2605
    }
2606

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2607
    // while we have more to decode or while the decoder did output something on EOF
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2608
    while (ist->decoding_needed) {
2609
        int64_t duration_dts = 0;
2610
        int64_t duration_pts = 0;
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2611
        int got_output = 0;
2612
        int decode_failed = 0;
2613

2614 2615
        ist->pts = ist->next_pts;
        ist->dts = ist->next_dts;
2616

2617
        switch (ist->dec_ctx->codec_type) {
2618
        case AVMEDIA_TYPE_AUDIO:
2619 2620
            ret = decode_audio    (ist, repeating ? NULL : &avpkt, &got_output,
                                   &decode_failed);
2621 2622
            break;
        case AVMEDIA_TYPE_VIDEO:
2623
            ret = decode_video    (ist, repeating ? NULL : &avpkt, &got_output, &duration_pts, !pkt,
2624
                                   &decode_failed);
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2625 2626
            if (!repeating || !pkt || got_output) {
                if (pkt && pkt->duration) {
2627
                    duration_dts = av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
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2628 2629
                } else if(ist->dec_ctx->framerate.num != 0 && ist->dec_ctx->framerate.den != 0) {
                    int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict+1 : ist->dec_ctx->ticks_per_frame;
2630
                    duration_dts = ((int64_t)AV_TIME_BASE *
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2631 2632 2633
                                    ist->dec_ctx->framerate.den * ticks) /
                                    ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame;
                }
2634

2635 2636
                if(ist->dts != AV_NOPTS_VALUE && duration_dts) {
                    ist->next_dts += duration_dts;
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                }else
                    ist->next_dts = AV_NOPTS_VALUE;
            }
2640

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            if (got_output) {
                if (duration_pts > 0) {
                    ist->next_pts += av_rescale_q(duration_pts, ist->st->time_base, AV_TIME_BASE_Q);
                } else {
                    ist->next_pts += duration_dts;
                }
            }
2648 2649
            break;
        case AVMEDIA_TYPE_SUBTITLE:
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2650 2651
            if (repeating)
                break;
2652
            ret = transcode_subtitles(ist, &avpkt, &got_output, &decode_failed);
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2653 2654
            if (!pkt && ret >= 0)
                ret = AVERROR_EOF;
2655
            break;
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        default:
            return -1;
2658
        }
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2659

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        if (ret == AVERROR_EOF) {
            eof_reached = 1;
            break;
        }

2665
        if (ret < 0) {
2666 2667 2668 2669 2670 2671 2672 2673
            if (decode_failed) {
                av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
                       ist->file_index, ist->st->index, av_err2str(ret));
            } else {
                av_log(NULL, AV_LOG_FATAL, "Error while processing the decoded "
                       "data for stream #%d:%d\n", ist->file_index, ist->st->index);
            }
            if (!decode_failed || exit_on_error)
2674 2675 2676
                exit_program(1);
            break;
        }
2677

2678 2679 2680
        if (got_output)
            ist->got_output = 1;

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2681 2682
        if (!got_output)
            break;
2683

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        // During draining, we might get multiple output frames in this loop.
        // ffmpeg.c does not drain the filter chain on configuration changes,
        // which means if we send multiple frames at once to the filters, and
        // one of those frames changes configuration, the buffered frames will
        // be lost. This can upset certain FATE tests.
        // Decode only 1 frame per call on EOF to appease these FATE tests.
        // The ideal solution would be to rewrite decoding to use the new
        // decoding API in a better way.
        if (!pkt)
2693
            break;
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2694 2695

        repeating = 1;
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2696 2697
    }

2698
    /* after flushing, send an EOF on all the filter inputs attached to the stream */
2699
    /* except when looping we need to flush but not to send an EOF */
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2700
    if (!pkt && ist->decoding_needed && eof_reached && !no_eof) {
2701 2702 2703 2704 2705 2706 2707
        int ret = send_filter_eof(ist);
        if (ret < 0) {
            av_log(NULL, AV_LOG_FATAL, "Error marking filters as finished\n");
            exit_program(1);
        }
    }

2708
    /* handle stream copy */
2709
    if (!ist->decoding_needed && pkt) {
2710
        ist->dts = ist->next_dts;
2711
        switch (ist->dec_ctx->codec_type) {
2712
        case AVMEDIA_TYPE_AUDIO:
2713
            av_assert1(pkt->duration >= 0);
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            if (ist->dec_ctx->sample_rate) {
                ist->next_dts += ((int64_t)AV_TIME_BASE * ist->dec_ctx->frame_size) /
                                  ist->dec_ctx->sample_rate;
            } else {
                ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
            }
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            break;
        case AVMEDIA_TYPE_VIDEO:
2722
            if (ist->framerate.num) {
2723 2724 2725 2726
                // TODO: Remove work-around for c99-to-c89 issue 7
                AVRational time_base_q = AV_TIME_BASE_Q;
                int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
                ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
2727
            } else if (pkt->duration) {
2728
                ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2729
            } else if(ist->dec_ctx->framerate.num != 0) {
2730
                int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict + 1 : ist->dec_ctx->ticks_per_frame;
2731
                ist->next_dts += ((int64_t)AV_TIME_BASE *
2732 2733
                                  ist->dec_ctx->framerate.den * ticks) /
                                  ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame;
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2734
            }
2735
            break;
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2736
        }
2737 2738
        ist->pts = ist->dts;
        ist->next_pts = ist->next_dts;
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2739
    }
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2740
    for (i = 0; i < nb_output_streams; i++) {
2741
        OutputStream *ost = output_streams[i];
2742

2743 2744
        if (!check_output_constraints(ist, ost) || ost->encoding_needed)
            continue;
2745

2746 2747
        do_streamcopy(ist, ost, pkt);
    }
2748

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2749
    return !eof_reached;
2750 2751
}

2752
static void print_sdp(void)
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2753
{
2754
    char sdp[16384];
2755
    int i;
2756 2757
    int j;
    AVIOContext *sdp_pb;
2758 2759 2760 2761 2762 2763
    AVFormatContext **avc;

    for (i = 0; i < nb_output_files; i++) {
        if (!output_files[i]->header_written)
            return;
    }
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2764

2765
    avc = av_malloc_array(nb_output_files, sizeof(*avc));
2766
    if (!avc)
2767
        exit_program(1);
2768 2769 2770 2771 2772 2773 2774
    for (i = 0, j = 0; i < nb_output_files; i++) {
        if (!strcmp(output_files[i]->ctx->oformat->name, "rtp")) {
            avc[j] = output_files[i]->ctx;
            j++;
        }
    }

2775 2776 2777
    if (!j)
        goto fail;

2778 2779 2780 2781 2782 2783 2784 2785 2786 2787
    av_sdp_create(avc, j, sdp, sizeof(sdp));

    if (!sdp_filename) {
        printf("SDP:\n%s\n", sdp);
        fflush(stdout);
    } else {
        if (avio_open2(&sdp_pb, sdp_filename, AVIO_FLAG_WRITE, &int_cb, NULL) < 0) {
            av_log(NULL, AV_LOG_ERROR, "Failed to open sdp file '%s'\n", sdp_filename);
        } else {
            avio_printf(sdp_pb, "SDP:\n%s", sdp);
2788
            avio_closep(&sdp_pb);
2789
            av_freep(&sdp_filename);
2790 2791
        }
    }
2792

2793
fail:
2794
    av_freep(&avc);
2795 2796
}

2797 2798 2799 2800 2801 2802
static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
{
    InputStream *ist = s->opaque;
    const enum AVPixelFormat *p;
    int ret;

2803
    for (p = pix_fmts; *p != AV_PIX_FMT_NONE; p++) {
2804
        const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
2805 2806
        const AVCodecHWConfig  *config = NULL;
        int i;
2807 2808 2809 2810

        if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
            break;

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        if (ist->hwaccel_id == HWACCEL_GENERIC ||
            ist->hwaccel_id == HWACCEL_AUTO) {
            for (i = 0;; i++) {
                config = avcodec_get_hw_config(s->codec, i);
                if (!config)
                    break;
                if (!(config->methods &
                      AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX))
                    continue;
                if (config->pix_fmt == *p)
                    break;
            }
        }
        if (config) {
            if (config->device_type != ist->hwaccel_device_type) {
                // Different hwaccel offered, ignore.
                continue;
            }
2829

2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861
            ret = hwaccel_decode_init(s);
            if (ret < 0) {
                if (ist->hwaccel_id == HWACCEL_GENERIC) {
                    av_log(NULL, AV_LOG_FATAL,
                           "%s hwaccel requested for input stream #%d:%d, "
                           "but cannot be initialized.\n",
                           av_hwdevice_get_type_name(config->device_type),
                           ist->file_index, ist->st->index);
                    return AV_PIX_FMT_NONE;
                }
                continue;
            }
        } else {
            const HWAccel *hwaccel = NULL;
            int i;
            for (i = 0; hwaccels[i].name; i++) {
                if (hwaccels[i].pix_fmt == *p) {
                    hwaccel = &hwaccels[i];
                    break;
                }
            }
            if (!hwaccel) {
                // No hwaccel supporting this pixfmt.
                continue;
            }
            if (hwaccel->id != ist->hwaccel_id) {
                // Does not match requested hwaccel.
                continue;
            }

            ret = hwaccel->init(s);
            if (ret < 0) {
2862 2863 2864 2865
                av_log(NULL, AV_LOG_FATAL,
                       "%s hwaccel requested for input stream #%d:%d, "
                       "but cannot be initialized.\n", hwaccel->name,
                       ist->file_index, ist->st->index);
2866
                return AV_PIX_FMT_NONE;
2867 2868
            }
        }
2869 2870 2871 2872 2873 2874 2875

        if (ist->hw_frames_ctx) {
            s->hw_frames_ctx = av_buffer_ref(ist->hw_frames_ctx);
            if (!s->hw_frames_ctx)
                return AV_PIX_FMT_NONE;
        }

2876
        ist->hwaccel_pix_fmt = *p;
2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892
        break;
    }

    return *p;
}

static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
{
    InputStream *ist = s->opaque;

    if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
        return ist->hwaccel_get_buffer(s, frame, flags);

    return avcodec_default_get_buffer2(s, frame, flags);
}

2893
static int init_input_stream(int ist_index, char *error, int error_len)
2894
{
2895
    int ret;
2896
    InputStream *ist = input_streams[ist_index];
2897

2898 2899 2900
    if (ist->decoding_needed) {
        AVCodec *codec = ist->dec;
        if (!codec) {
2901
            snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2902
                    avcodec_get_name(ist->dec_ctx->codec_id), ist->file_index, ist->st->index);
2903
            return AVERROR(EINVAL);
2904 2905
        }

2906 2907 2908 2909
        ist->dec_ctx->opaque                = ist;
        ist->dec_ctx->get_format            = get_format;
        ist->dec_ctx->get_buffer2           = get_buffer;
        ist->dec_ctx->thread_safe_callbacks = 1;
2910

2911
        av_opt_set_int(ist->dec_ctx, "refcounted_frames", 1, 0);
2912 2913
        if (ist->dec_ctx->codec_id == AV_CODEC_ID_DVB_SUBTITLE &&
           (ist->decoding_needed & DECODING_FOR_OST)) {
2914
            av_dict_set(&ist->decoder_opts, "compute_edt", "1", AV_DICT_DONT_OVERWRITE);
2915 2916 2917
            if (ist->decoding_needed & DECODING_FOR_FILTER)
                av_log(NULL, AV_LOG_WARNING, "Warning using DVB subtitles for filtering and output at the same time is not fully supported, also see -compute_edt [0|1]\n");
        }
2918

2919 2920
        av_dict_set(&ist->decoder_opts, "sub_text_format", "ass", AV_DICT_DONT_OVERWRITE);

2921 2922
        /* Useful for subtitles retiming by lavf (FIXME), skipping samples in
         * audio, and video decoders such as cuvid or mediacodec */
2923
        ist->dec_ctx->pkt_timebase = ist->st->time_base;
2924

2925 2926
        if (!av_dict_get(ist->decoder_opts, "threads", NULL, 0))
            av_dict_set(&ist->decoder_opts, "threads", "auto", 0);
2927 2928 2929
        /* Attached pics are sparse, therefore we would not want to delay their decoding till EOF. */
        if (ist->st->disposition & AV_DISPOSITION_ATTACHED_PIC)
            av_dict_set(&ist->decoder_opts, "threads", "1", 0);
2930 2931 2932 2933 2934 2935 2936 2937 2938

        ret = hw_device_setup_for_decode(ist);
        if (ret < 0) {
            snprintf(error, error_len, "Device setup failed for "
                     "decoder on input stream #%d:%d : %s",
                     ist->file_index, ist->st->index, av_err2str(ret));
            return ret;
        }

2939
        if ((ret = avcodec_open2(ist->dec_ctx, codec, &ist->decoder_opts)) < 0) {
2940 2941
            if (ret == AVERROR_EXPERIMENTAL)
                abort_codec_experimental(codec, 0);
2942 2943 2944 2945

            snprintf(error, error_len,
                     "Error while opening decoder for input stream "
                     "#%d:%d : %s",
2946
                     ist->file_index, ist->st->index, av_err2str(ret));
2947
            return ret;
2948
        }
2949
        assert_avoptions(ist->decoder_opts);
2950
    }
2951

2952
    ist->next_pts = AV_NOPTS_VALUE;
2953
    ist->next_dts = AV_NOPTS_VALUE;
2954

2955
    return 0;
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2956 2957
}

2958
static InputStream *get_input_stream(OutputStream *ost)
2959
{
2960 2961 2962
    if (ost->source_index >= 0)
        return input_streams[ost->source_index];
    return NULL;
2963 2964
}

2965 2966
static int compare_int64(const void *a, const void *b)
{
2967
    return FFDIFFSIGN(*(const int64_t *)a, *(const int64_t *)b);
2968 2969
}

2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986
/* open the muxer when all the streams are initialized */
static int check_init_output_file(OutputFile *of, int file_index)
{
    int ret, i;

    for (i = 0; i < of->ctx->nb_streams; i++) {
        OutputStream *ost = output_streams[of->ost_index + i];
        if (!ost->initialized)
            return 0;
    }

    of->ctx->interrupt_callback = int_cb;

    ret = avformat_write_header(of->ctx, &of->opts);
    if (ret < 0) {
        av_log(NULL, AV_LOG_ERROR,
               "Could not write header for output file #%d "
2987
               "(incorrect codec parameters ?): %s\n",
2988 2989 2990 2991 2992 2993
               file_index, av_err2str(ret));
        return ret;
    }
    //assert_avoptions(of->opts);
    of->header_written = 1;

2994
    av_dump_format(of->ctx, file_index, of->ctx->url, 1);
2995 2996 2997 2998

    if (sdp_filename || want_sdp)
        print_sdp();

2999 3000 3001 3002
    /* flush the muxing queues */
    for (i = 0; i < of->ctx->nb_streams; i++) {
        OutputStream *ost = output_streams[of->ost_index + i];

3003 3004 3005 3006
        /* try to improve muxing time_base (only possible if nothing has been written yet) */
        if (!av_fifo_size(ost->muxing_queue))
            ost->mux_timebase = ost->st->time_base;

3007 3008 3009
        while (av_fifo_size(ost->muxing_queue)) {
            AVPacket pkt;
            av_fifo_generic_read(ost->muxing_queue, &pkt, sizeof(pkt), NULL);
3010
            write_packet(of, &pkt, ost, 1);
3011 3012 3013
        }
    }

3014 3015 3016
    return 0;
}

3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036
static int init_output_bsfs(OutputStream *ost)
{
    AVBSFContext *ctx;
    int i, ret;

    if (!ost->nb_bitstream_filters)
        return 0;

    for (i = 0; i < ost->nb_bitstream_filters; i++) {
        ctx = ost->bsf_ctx[i];

        ret = avcodec_parameters_copy(ctx->par_in,
                                      i ? ost->bsf_ctx[i - 1]->par_out : ost->st->codecpar);
        if (ret < 0)
            return ret;

        ctx->time_base_in = i ? ost->bsf_ctx[i - 1]->time_base_out : ost->st->time_base;

        ret = av_bsf_init(ctx);
        if (ret < 0) {
3037
            av_log(NULL, AV_LOG_ERROR, "Error initializing bitstream filter: %s\n",
3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052
                   ost->bsf_ctx[i]->filter->name);
            return ret;
        }
    }

    ctx = ost->bsf_ctx[ost->nb_bitstream_filters - 1];
    ret = avcodec_parameters_copy(ost->st->codecpar, ctx->par_out);
    if (ret < 0)
        return ret;

    ost->st->time_base = ctx->time_base_out;

    return 0;
}

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static int init_output_stream_streamcopy(OutputStream *ost)
{
    OutputFile *of = output_files[ost->file_index];
    InputStream *ist = get_input_stream(ost);
    AVCodecParameters *par_dst = ost->st->codecpar;
    AVCodecParameters *par_src = ost->ref_par;
    AVRational sar;
    int i, ret;
3061
    uint32_t codec_tag = par_dst->codec_tag;
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3062 3063 3064

    av_assert0(ist && !ost->filter);

3065 3066 3067
    ret = avcodec_parameters_to_context(ost->enc_ctx, ist->st->codecpar);
    if (ret >= 0)
        ret = av_opt_set_dict(ost->enc_ctx, &ost->encoder_opts);
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    if (ret < 0) {
        av_log(NULL, AV_LOG_FATAL,
               "Error setting up codec context options.\n");
        return ret;
    }
3073 3074 3075 3076 3077 3078 3079

    ret = avcodec_parameters_from_context(par_src, ost->enc_ctx);
    if (ret < 0) {
        av_log(NULL, AV_LOG_FATAL,
               "Error getting reference codec parameters.\n");
        return ret;
    }
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3080

3081 3082
    if (!codec_tag) {
        unsigned int codec_tag_tmp;
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3083
        if (!of->ctx->oformat->codec_tag ||
3084 3085 3086
            av_codec_get_id (of->ctx->oformat->codec_tag, par_src->codec_tag) == par_src->codec_id ||
            !av_codec_get_tag2(of->ctx->oformat->codec_tag, par_src->codec_id, &codec_tag_tmp))
            codec_tag = par_src->codec_tag;
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3087 3088
    }

3089 3090 3091
    ret = avcodec_parameters_copy(par_dst, par_src);
    if (ret < 0)
        return ret;
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3092

3093
    par_dst->codec_tag = codec_tag;
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    if (!ost->frame_rate.num)
        ost->frame_rate = ist->framerate;
    ost->st->avg_frame_rate = ost->frame_rate;

    ret = avformat_transfer_internal_stream_timing_info(of->ctx->oformat, ost->st, ist->st, copy_tb);
    if (ret < 0)
        return ret;

    // copy timebase while removing common factors
3104 3105
    if (ost->st->time_base.num <= 0 || ost->st->time_base.den <= 0)
        ost->st->time_base = av_add_q(av_stream_get_codec_timebase(ost->st), (AVRational){0, 1});
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3107 3108 3109 3110
    // copy estimated duration as a hint to the muxer
    if (ost->st->duration <= 0 && ist->st->duration > 0)
        ost->st->duration = av_rescale_q(ist->st->duration, ist->st->time_base, ost->st->time_base);

3111 3112 3113
    // copy disposition
    ost->st->disposition = ist->st->disposition;

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    if (ist->st->nb_side_data) {
        for (i = 0; i < ist->st->nb_side_data; i++) {
            const AVPacketSideData *sd_src = &ist->st->side_data[i];
3117
            uint8_t *dst_data;
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3118

3119 3120
            dst_data = av_stream_new_side_data(ost->st, sd_src->type, sd_src->size);
            if (!dst_data)
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3121
                return AVERROR(ENOMEM);
3122
            memcpy(dst_data, sd_src->data, sd_src->size);
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        }
    }

3126 3127 3128 3129 3130 3131 3132
    if (ost->rotate_overridden) {
        uint8_t *sd = av_stream_new_side_data(ost->st, AV_PKT_DATA_DISPLAYMATRIX,
                                              sizeof(int32_t) * 9);
        if (sd)
            av_display_rotation_set((int32_t *)sd, -ost->rotate_override_value);
    }

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    switch (par_dst->codec_type) {
    case AVMEDIA_TYPE_AUDIO:
        if (audio_volume != 256) {
            av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
            exit_program(1);
        }
        if((par_dst->block_align == 1 || par_dst->block_align == 1152 || par_dst->block_align == 576) && par_dst->codec_id == AV_CODEC_ID_MP3)
            par_dst->block_align= 0;
        if(par_dst->codec_id == AV_CODEC_ID_AC3)
            par_dst->block_align= 0;
        break;
    case AVMEDIA_TYPE_VIDEO:
        if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
            sar =
                av_mul_q(ost->frame_aspect_ratio,
                         (AVRational){ par_dst->height, par_dst->width });
            av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
                   "with stream copy may produce invalid files\n");
            }
        else if (ist->st->sample_aspect_ratio.num)
            sar = ist->st->sample_aspect_ratio;
        else
            sar = par_src->sample_aspect_ratio;
        ost->st->sample_aspect_ratio = par_dst->sample_aspect_ratio = sar;
        ost->st->avg_frame_rate = ist->st->avg_frame_rate;
        ost->st->r_frame_rate = ist->st->r_frame_rate;
        break;
    }

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    ost->mux_timebase = ist->st->time_base;

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    return 0;
}

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static void set_encoder_id(OutputFile *of, OutputStream *ost)
{
    AVDictionaryEntry *e;

    uint8_t *encoder_string;
    int encoder_string_len;
    int format_flags = 0;
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    int codec_flags = ost->enc_ctx->flags;
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    if (av_dict_get(ost->st->metadata, "encoder",  NULL, 0))
        return;

    e = av_dict_get(of->opts, "fflags", NULL, 0);
    if (e) {
        const AVOption *o = av_opt_find(of->ctx, "fflags", NULL, 0, 0);
        if (!o)
            return;
        av_opt_eval_flags(of->ctx, o, e->value, &format_flags);
    }
    e = av_dict_get(ost->encoder_opts, "flags", NULL, 0);
    if (e) {
        const AVOption *o = av_opt_find(ost->enc_ctx, "flags", NULL, 0, 0);
        if (!o)
            return;
        av_opt_eval_flags(ost->enc_ctx, o, e->value, &codec_flags);
    }

    encoder_string_len = sizeof(LIBAVCODEC_IDENT) + strlen(ost->enc->name) + 2;
    encoder_string     = av_mallocz(encoder_string_len);
    if (!encoder_string)
        exit_program(1);

    if (!(format_flags & AVFMT_FLAG_BITEXACT) && !(codec_flags & AV_CODEC_FLAG_BITEXACT))
        av_strlcpy(encoder_string, LIBAVCODEC_IDENT " ", encoder_string_len);
    else
        av_strlcpy(encoder_string, "Lavc ", encoder_string_len);
    av_strlcat(encoder_string, ost->enc->name, encoder_string_len);
    av_dict_set(&ost->st->metadata, "encoder",  encoder_string,
                AV_DICT_DONT_STRDUP_VAL | AV_DICT_DONT_OVERWRITE);
}

static void parse_forced_key_frames(char *kf, OutputStream *ost,
                                    AVCodecContext *avctx)
{
    char *p;
    int n = 1, i, size, index = 0;
    int64_t t, *pts;

    for (p = kf; *p; p++)
        if (*p == ',')
            n++;
    size = n;
    pts = av_malloc_array(size, sizeof(*pts));
    if (!pts) {
        av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
        exit_program(1);
    }

    p = kf;
    for (i = 0; i < n; i++) {
        char *next = strchr(p, ',');

        if (next)
            *next++ = 0;

        if (!memcmp(p, "chapters", 8)) {

            AVFormatContext *avf = output_files[ost->file_index]->ctx;
            int j;

            if (avf->nb_chapters > INT_MAX - size ||
                !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
                                     sizeof(*pts)))) {
                av_log(NULL, AV_LOG_FATAL,
                       "Could not allocate forced key frames array.\n");
                exit_program(1);
            }
            t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
            t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);

            for (j = 0; j < avf->nb_chapters; j++) {
                AVChapter *c = avf->chapters[j];
                av_assert1(index < size);
                pts[index++] = av_rescale_q(c->start, c->time_base,
                                            avctx->time_base) + t;
            }

        } else {

            t = parse_time_or_die("force_key_frames", p, 1);
            av_assert1(index < size);
            pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);

        }

        p = next;
    }

    av_assert0(index == size);
    qsort(pts, size, sizeof(*pts), compare_int64);
    ost->forced_kf_count = size;
    ost->forced_kf_pts   = pts;
}

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static void init_encoder_time_base(OutputStream *ost, AVRational default_time_base)
{
    InputStream *ist = get_input_stream(ost);
    AVCodecContext *enc_ctx = ost->enc_ctx;
    AVFormatContext *oc;

    if (ost->enc_timebase.num > 0) {
        enc_ctx->time_base = ost->enc_timebase;
        return;
    }

    if (ost->enc_timebase.num < 0) {
        if (ist) {
            enc_ctx->time_base = ist->st->time_base;
            return;
        }

        oc = output_files[ost->file_index]->ctx;
        av_log(oc, AV_LOG_WARNING, "Input stream data not available, using default time base\n");
    }

    enc_ctx->time_base = default_time_base;
}

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static int init_output_stream_encode(OutputStream *ost)
{
    InputStream *ist = get_input_stream(ost);
    AVCodecContext *enc_ctx = ost->enc_ctx;
    AVCodecContext *dec_ctx = NULL;
    AVFormatContext *oc = output_files[ost->file_index]->ctx;
    int j, ret;

    set_encoder_id(output_files[ost->file_index], ost);

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    // Muxers use AV_PKT_DATA_DISPLAYMATRIX to signal rotation. On the other
    // hand, the legacy API makes demuxers set "rotate" metadata entries,
    // which have to be filtered out to prevent leaking them to output files.
    av_dict_set(&ost->st->metadata, "rotate", NULL, 0);

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    if (ist) {
        ost->st->disposition          = ist->st->disposition;

        dec_ctx = ist->dec_ctx;

        enc_ctx->chroma_sample_location = dec_ctx->chroma_sample_location;
    } else {
        for (j = 0; j < oc->nb_streams; j++) {
            AVStream *st = oc->streams[j];
            if (st != ost->st && st->codecpar->codec_type == ost->st->codecpar->codec_type)
                break;
        }
        if (j == oc->nb_streams)
            if (ost->st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO ||
                ost->st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
                ost->st->disposition = AV_DISPOSITION_DEFAULT;
    }

    if (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO) {
        if (!ost->frame_rate.num)
            ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
        if (ist && !ost->frame_rate.num)
            ost->frame_rate = ist->framerate;
        if (ist && !ost->frame_rate.num)
            ost->frame_rate = ist->st->r_frame_rate;
        if (ist && !ost->frame_rate.num) {
            ost->frame_rate = (AVRational){25, 1};
            av_log(NULL, AV_LOG_WARNING,
                   "No information "
                   "about the input framerate is available. Falling "
                   "back to a default value of 25fps for output stream #%d:%d. Use the -r option "
                   "if you want a different framerate.\n",
                   ost->file_index, ost->index);
        }
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        if (ost->enc->supported_framerates && !ost->force_fps) {
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            int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
            ost->frame_rate = ost->enc->supported_framerates[idx];
        }
        // reduce frame rate for mpeg4 to be within the spec limits
        if (enc_ctx->codec_id == AV_CODEC_ID_MPEG4) {
            av_reduce(&ost->frame_rate.num, &ost->frame_rate.den,
                      ost->frame_rate.num, ost->frame_rate.den, 65535);
        }
    }

    switch (enc_ctx->codec_type) {
    case AVMEDIA_TYPE_AUDIO:
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        enc_ctx->sample_fmt     = av_buffersink_get_format(ost->filter->filter);
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        if (dec_ctx)
            enc_ctx->bits_per_raw_sample = FFMIN(dec_ctx->bits_per_raw_sample,
                                                 av_get_bytes_per_sample(enc_ctx->sample_fmt) << 3);
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        enc_ctx->sample_rate    = av_buffersink_get_sample_rate(ost->filter->filter);
        enc_ctx->channel_layout = av_buffersink_get_channel_layout(ost->filter->filter);
        enc_ctx->channels       = av_buffersink_get_channels(ost->filter->filter);
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        init_encoder_time_base(ost, av_make_q(1, enc_ctx->sample_rate));
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        break;
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    case AVMEDIA_TYPE_VIDEO:
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        init_encoder_time_base(ost, av_inv_q(ost->frame_rate));

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        if (!(enc_ctx->time_base.num && enc_ctx->time_base.den))
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            enc_ctx->time_base = av_buffersink_get_time_base(ost->filter->filter);
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        if (   av_q2d(enc_ctx->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
           && (video_sync_method == VSYNC_CFR || video_sync_method == VSYNC_VSCFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
            av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
                                       "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
        }
        for (j = 0; j < ost->forced_kf_count; j++)
            ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
                                                 AV_TIME_BASE_Q,
                                                 enc_ctx->time_base);

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        enc_ctx->width  = av_buffersink_get_w(ost->filter->filter);
        enc_ctx->height = av_buffersink_get_h(ost->filter->filter);
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        enc_ctx->sample_aspect_ratio = ost->st->sample_aspect_ratio =
            ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
            av_mul_q(ost->frame_aspect_ratio, (AVRational){ enc_ctx->height, enc_ctx->width }) :
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            av_buffersink_get_sample_aspect_ratio(ost->filter->filter);
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        enc_ctx->pix_fmt = av_buffersink_get_format(ost->filter->filter);
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        if (dec_ctx)
            enc_ctx->bits_per_raw_sample = FFMIN(dec_ctx->bits_per_raw_sample,
                                                 av_pix_fmt_desc_get(enc_ctx->pix_fmt)->comp[0].depth);

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        enc_ctx->framerate = ost->frame_rate;

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        ost->st->avg_frame_rate = ost->frame_rate;

        if (!dec_ctx ||
            enc_ctx->width   != dec_ctx->width  ||
            enc_ctx->height  != dec_ctx->height ||
            enc_ctx->pix_fmt != dec_ctx->pix_fmt) {
            enc_ctx->bits_per_raw_sample = frame_bits_per_raw_sample;
        }

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        if (ost->top_field_first == 0) {
            enc_ctx->field_order = AV_FIELD_BB;
        } else if (ost->top_field_first == 1) {
            enc_ctx->field_order = AV_FIELD_TT;
        }

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        if (ost->forced_keyframes) {
            if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
                ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
                                    forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
                if (ret < 0) {
                    av_log(NULL, AV_LOG_ERROR,
                           "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
                    return ret;
                }
                ost->forced_keyframes_expr_const_values[FKF_N] = 0;
                ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
                ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
                ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;

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                // Don't parse the 'forced_keyframes' in case of 'keep-source-keyframes',
                // parse it only for static kf timings
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            } else if(strncmp(ost->forced_keyframes, "source", 6)) {
                parse_forced_key_frames(ost->forced_keyframes, ost, ost->enc_ctx);
            }
        }
        break;
    case AVMEDIA_TYPE_SUBTITLE:
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        enc_ctx->time_base = AV_TIME_BASE_Q;
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        if (!enc_ctx->width) {
            enc_ctx->width     = input_streams[ost->source_index]->st->codecpar->width;
            enc_ctx->height    = input_streams[ost->source_index]->st->codecpar->height;
        }
        break;
    case AVMEDIA_TYPE_DATA:
        break;
    default:
        abort();
        break;
    }

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    ost->mux_timebase = enc_ctx->time_base;

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    return 0;
}

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static int init_output_stream(OutputStream *ost, char *error, int error_len)
{
    int ret = 0;

    if (ost->encoding_needed) {
        AVCodec      *codec = ost->enc;
        AVCodecContext *dec = NULL;
        InputStream *ist;

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        ret = init_output_stream_encode(ost);
        if (ret < 0)
            return ret;

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        if ((ist = get_input_stream(ost)))
            dec = ist->dec_ctx;
        if (dec && dec->subtitle_header) {
            /* ASS code assumes this buffer is null terminated so add extra byte. */
            ost->enc_ctx->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
            if (!ost->enc_ctx->subtitle_header)
                return AVERROR(ENOMEM);
            memcpy(ost->enc_ctx->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
            ost->enc_ctx->subtitle_header_size = dec->subtitle_header_size;
        }
        if (!av_dict_get(ost->encoder_opts, "threads", NULL, 0))
            av_dict_set(&ost->encoder_opts, "threads", "auto", 0);
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        if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
            !codec->defaults &&
            !av_dict_get(ost->encoder_opts, "b", NULL, 0) &&
            !av_dict_get(ost->encoder_opts, "ab", NULL, 0))
            av_dict_set(&ost->encoder_opts, "b", "128000", 0);
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        if (ost->filter && av_buffersink_get_hw_frames_ctx(ost->filter->filter) &&
            ((AVHWFramesContext*)av_buffersink_get_hw_frames_ctx(ost->filter->filter)->data)->format ==
            av_buffersink_get_format(ost->filter->filter)) {
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            ost->enc_ctx->hw_frames_ctx = av_buffer_ref(av_buffersink_get_hw_frames_ctx(ost->filter->filter));
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            if (!ost->enc_ctx->hw_frames_ctx)
                return AVERROR(ENOMEM);
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        } else {
            ret = hw_device_setup_for_encode(ost);
            if (ret < 0) {
                snprintf(error, error_len, "Device setup failed for "
                         "encoder on output stream #%d:%d : %s",
                     ost->file_index, ost->index, av_err2str(ret));
                return ret;
            }
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        }
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        if (ist && ist->dec->type == AVMEDIA_TYPE_SUBTITLE && ost->enc->type == AVMEDIA_TYPE_SUBTITLE) {
            int input_props = 0, output_props = 0;
            AVCodecDescriptor const *input_descriptor =
                avcodec_descriptor_get(dec->codec_id);
            AVCodecDescriptor const *output_descriptor =
                avcodec_descriptor_get(ost->enc_ctx->codec_id);
            if (input_descriptor)
                input_props = input_descriptor->props & (AV_CODEC_PROP_TEXT_SUB | AV_CODEC_PROP_BITMAP_SUB);
            if (output_descriptor)
                output_props = output_descriptor->props & (AV_CODEC_PROP_TEXT_SUB | AV_CODEC_PROP_BITMAP_SUB);
            if (input_props && output_props && input_props != output_props) {
                snprintf(error, error_len,
                         "Subtitle encoding currently only possible from text to text "
                         "or bitmap to bitmap");
                return AVERROR_INVALIDDATA;
            }
        }
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        if ((ret = avcodec_open2(ost->enc_ctx, codec, &ost->encoder_opts)) < 0) {
            if (ret == AVERROR_EXPERIMENTAL)
                abort_codec_experimental(codec, 1);
            snprintf(error, error_len,
                     "Error while opening encoder for output stream #%d:%d - "
                     "maybe incorrect parameters such as bit_rate, rate, width or height",
                    ost->file_index, ost->index);
            return ret;
        }
        if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
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            !(ost->enc->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE))
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            av_buffersink_set_frame_size(ost->filter->filter,
                                            ost->enc_ctx->frame_size);
        assert_avoptions(ost->encoder_opts);
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        if (ost->enc_ctx->bit_rate && ost->enc_ctx->bit_rate < 1000 &&
            ost->enc_ctx->codec_id != AV_CODEC_ID_CODEC2 /* don't complain about 700 bit/s modes */)
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            av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
                                         " It takes bits/s as argument, not kbits/s\n");

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        ret = avcodec_parameters_from_context(ost->st->codecpar, ost->enc_ctx);
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        if (ret < 0) {
            av_log(NULL, AV_LOG_FATAL,
                   "Error initializing the output stream codec context.\n");
            exit_program(1);
        }
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        /*
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         * FIXME: ost->st->codec should't be needed here anymore.
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         */
        ret = avcodec_copy_context(ost->st->codec, ost->enc_ctx);
        if (ret < 0)
            return ret;
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        if (ost->enc_ctx->nb_coded_side_data) {
            int i;

            for (i = 0; i < ost->enc_ctx->nb_coded_side_data; i++) {
                const AVPacketSideData *sd_src = &ost->enc_ctx->coded_side_data[i];
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                uint8_t *dst_data;
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                dst_data = av_stream_new_side_data(ost->st, sd_src->type, sd_src->size);
                if (!dst_data)
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                    return AVERROR(ENOMEM);
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                memcpy(dst_data, sd_src->data, sd_src->size);
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            }
        }

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        /*
         * Add global input side data. For now this is naive, and copies it
         * from the input stream's global side data. All side data should
         * really be funneled over AVFrame and libavfilter, then added back to
         * packet side data, and then potentially using the first packet for
         * global side data.
         */
        if (ist) {
            int i;
            for (i = 0; i < ist->st->nb_side_data; i++) {
                AVPacketSideData *sd = &ist->st->side_data[i];
                uint8_t *dst = av_stream_new_side_data(ost->st, sd->type, sd->size);
                if (!dst)
                    return AVERROR(ENOMEM);
                memcpy(dst, sd->data, sd->size);
                if (ist->autorotate && sd->type == AV_PKT_DATA_DISPLAYMATRIX)
                    av_display_rotation_set((uint32_t *)dst, 0);
            }
        }

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        // copy timebase while removing common factors
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        if (ost->st->time_base.num <= 0 || ost->st->time_base.den <= 0)
            ost->st->time_base = av_add_q(ost->enc_ctx->time_base, (AVRational){0, 1});
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        // copy estimated duration as a hint to the muxer
        if (ost->st->duration <= 0 && ist && ist->st->duration > 0)
            ost->st->duration = av_rescale_q(ist->st->duration, ist->st->time_base, ost->st->time_base);

3591
        ost->st->codec->codec= ost->enc_ctx->codec;
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3592
    } else if (ost->stream_copy) {
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        ret = init_output_stream_streamcopy(ost);
        if (ret < 0)
            return ret;
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    }

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    // parse user provided disposition, and update stream values
    if (ost->disposition) {
        static const AVOption opts[] = {
            { "disposition"         , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT64_MIN, INT64_MAX, .unit = "flags" },
            { "default"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DEFAULT           },    .unit = "flags" },
            { "dub"                 , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DUB               },    .unit = "flags" },
            { "original"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_ORIGINAL          },    .unit = "flags" },
            { "comment"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_COMMENT           },    .unit = "flags" },
            { "lyrics"              , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_LYRICS            },    .unit = "flags" },
            { "karaoke"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_KARAOKE           },    .unit = "flags" },
            { "forced"              , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_FORCED            },    .unit = "flags" },
            { "hearing_impaired"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_HEARING_IMPAIRED  },    .unit = "flags" },
            { "visual_impaired"     , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_VISUAL_IMPAIRED   },    .unit = "flags" },
            { "clean_effects"       , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CLEAN_EFFECTS     },    .unit = "flags" },
3612
            { "attached_pic"        , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_ATTACHED_PIC      },    .unit = "flags" },
3613 3614
            { "captions"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CAPTIONS          },    .unit = "flags" },
            { "descriptions"        , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DESCRIPTIONS      },    .unit = "flags" },
3615
            { "dependent"           , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DEPENDENT         },    .unit = "flags" },
3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631
            { "metadata"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_METADATA          },    .unit = "flags" },
            { NULL },
        };
        static const AVClass class = {
            .class_name = "",
            .item_name  = av_default_item_name,
            .option     = opts,
            .version    = LIBAVUTIL_VERSION_INT,
        };
        const AVClass *pclass = &class;

        ret = av_opt_eval_flags(&pclass, &opts[0], ost->disposition, &ost->st->disposition);
        if (ret < 0)
            return ret;
    }

3632 3633 3634 3635 3636 3637 3638
    /* initialize bitstream filters for the output stream
     * needs to be done here, because the codec id for streamcopy is not
     * known until now */
    ret = init_output_bsfs(ost);
    if (ret < 0)
        return ret;

3639 3640 3641 3642 3643 3644
    ost->initialized = 1;

    ret = check_init_output_file(output_files[ost->file_index], ost->file_index);
    if (ret < 0)
        return ret;

3645 3646 3647
    return ret;
}

3648
static void report_new_stream(int input_index, AVPacket *pkt)
3649
{
3650 3651 3652 3653 3654 3655 3656
    InputFile *file = input_files[input_index];
    AVStream *st = file->ctx->streams[pkt->stream_index];

    if (pkt->stream_index < file->nb_streams_warn)
        return;
    av_log(file->ctx, AV_LOG_WARNING,
           "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
3657
           av_get_media_type_string(st->codecpar->codec_type),
3658 3659 3660
           input_index, pkt->stream_index,
           pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
    file->nb_streams_warn = pkt->stream_index + 1;
3661 3662
}

3663
static int transcode_init(void)
3664
{
3665
    int ret = 0, i, j, k;
3666
    AVFormatContext *oc;
3667
    OutputStream *ost;
3668
    InputStream *ist;
3669
    char error[1024] = {0};
3670

3671 3672 3673 3674
    for (i = 0; i < nb_filtergraphs; i++) {
        FilterGraph *fg = filtergraphs[i];
        for (j = 0; j < fg->nb_outputs; j++) {
            OutputFilter *ofilter = fg->outputs[j];
3675
            if (!ofilter->ost || ofilter->ost->source_index >= 0)
3676 3677 3678 3679 3680 3681 3682 3683 3684 3685
                continue;
            if (fg->nb_inputs != 1)
                continue;
            for (k = nb_input_streams-1; k >= 0 ; k--)
                if (fg->inputs[0]->ist == input_streams[k])
                    break;
            ofilter->ost->source_index = k;
        }
    }

3686 3687
    /* init framerate emulation */
    for (i = 0; i < nb_input_files; i++) {
3688
        InputFile *ifile = input_files[i];
3689 3690
        if (ifile->rate_emu)
            for (j = 0; j < ifile->nb_streams; j++)
3691
                input_streams[j + ifile->ist_index]->start = av_gettime_relative();
3692
    }
3693

3694 3695
    /* init input streams */
    for (i = 0; i < nb_input_streams; i++)
3696 3697 3698
        if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
            for (i = 0; i < nb_output_streams; i++) {
                ost = output_streams[i];
3699
                avcodec_close(ost->enc_ctx);
3700
            }
3701
            goto dump_format;
3702
        }
3703

3704 3705
    /* open each encoder */
    for (i = 0; i < nb_output_streams; i++) {
3706 3707 3708 3709
        // skip streams fed from filtergraphs until we have a frame for them
        if (output_streams[i]->filter)
            continue;

3710 3711 3712 3713 3714
        ret = init_output_stream(output_streams[i], error, sizeof(error));
        if (ret < 0)
            goto dump_format;
    }

3715 3716
    /* discard unused programs */
    for (i = 0; i < nb_input_files; i++) {
3717
        InputFile *ifile = input_files[i];
3718 3719 3720
        for (j = 0; j < ifile->ctx->nb_programs; j++) {
            AVProgram *p = ifile->ctx->programs[j];
            int discard  = AVDISCARD_ALL;
3721

3722
            for (k = 0; k < p->nb_stream_indexes; k++)
3723
                if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
3724 3725 3726 3727
                    discard = AVDISCARD_DEFAULT;
                    break;
                }
            p->discard = discard;
3728
        }
3729 3730
    }

3731 3732 3733 3734 3735 3736 3737 3738 3739 3740
    /* write headers for files with no streams */
    for (i = 0; i < nb_output_files; i++) {
        oc = output_files[i]->ctx;
        if (oc->oformat->flags & AVFMT_NOSTREAMS && oc->nb_streams == 0) {
            ret = check_init_output_file(output_files[i], i);
            if (ret < 0)
                goto dump_format;
        }
    }

3741 3742
 dump_format:
    /* dump the stream mapping */
3743
    av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
3744 3745
    for (i = 0; i < nb_input_streams; i++) {
        ist = input_streams[i];
3746

3747
        for (j = 0; j < ist->nb_filters; j++) {
Timothy Gu's avatar
Timothy Gu committed
3748
            if (!filtergraph_is_simple(ist->filters[j]->graph)) {
3749 3750
                av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
                       ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
3751
                       ist->filters[j]->name);
3752 3753 3754 3755
                if (nb_filtergraphs > 1)
                    av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
                av_log(NULL, AV_LOG_INFO, "\n");
            }
3756 3757 3758
        }
    }

3759
    for (i = 0; i < nb_output_streams; i++) {
3760
        ost = output_streams[i];
3761

3762 3763 3764 3765 3766
        if (ost->attachment_filename) {
            /* an attached file */
            av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
                   ost->attachment_filename, ost->file_index, ost->index);
            continue;
3767
        }
3768

Timothy Gu's avatar
Timothy Gu committed
3769
        if (ost->filter && !filtergraph_is_simple(ost->filter->graph)) {
3770
            /* output from a complex graph */
3771
            av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
3772 3773
            if (nb_filtergraphs > 1)
                av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
3774

3775 3776
            av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
                   ost->index, ost->enc ? ost->enc->name : "?");
3777
            continue;
3778
        }
3779

3780
        av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
3781 3782
               input_streams[ost->source_index]->file_index,
               input_streams[ost->source_index]->st->index,
3783 3784
               ost->file_index,
               ost->index);
3785
        if (ost->sync_ist != input_streams[ost->source_index])
3786
            av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
3787 3788
                   ost->sync_ist->file_index,
                   ost->sync_ist->st->index);
3789
        if (ost->stream_copy)
3790
            av_log(NULL, AV_LOG_INFO, " (copy)");
3791 3792 3793 3794 3795 3796 3797
        else {
            const AVCodec *in_codec    = input_streams[ost->source_index]->dec;
            const AVCodec *out_codec   = ost->enc;
            const char *decoder_name   = "?";
            const char *in_codec_name  = "?";
            const char *encoder_name   = "?";
            const char *out_codec_name = "?";
3798
            const AVCodecDescriptor *desc;
3799 3800 3801

            if (in_codec) {
                decoder_name  = in_codec->name;
3802 3803 3804
                desc = avcodec_descriptor_get(in_codec->id);
                if (desc)
                    in_codec_name = desc->name;
3805 3806 3807 3808 3809 3810
                if (!strcmp(decoder_name, in_codec_name))
                    decoder_name = "native";
            }

            if (out_codec) {
                encoder_name   = out_codec->name;
3811 3812 3813
                desc = avcodec_descriptor_get(out_codec->id);
                if (desc)
                    out_codec_name = desc->name;
3814
                if (!strcmp(encoder_name, out_codec_name))
3815 3816 3817 3818 3819 3820 3821
                    encoder_name = "native";
            }

            av_log(NULL, AV_LOG_INFO, " (%s (%s) -> %s (%s))",
                   in_codec_name, decoder_name,
                   out_codec_name, encoder_name);
        }
3822
        av_log(NULL, AV_LOG_INFO, "\n");
3823 3824
    }

3825
    if (ret) {
3826
        av_log(NULL, AV_LOG_ERROR, "%s\n", error);
3827
        return ret;
3828 3829
    }

3830
    atomic_store(&transcode_init_done, 1);
3831

3832 3833
    return 0;
}
3834

3835
/* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
3836 3837 3838
static int need_output(void)
{
    int i;
3839

3840 3841 3842 3843
    for (i = 0; i < nb_output_streams; i++) {
        OutputStream *ost    = output_streams[i];
        OutputFile *of       = output_files[ost->file_index];
        AVFormatContext *os  = output_files[ost->file_index]->ctx;
3844

3845
        if (ost->finished ||
3846 3847
            (os->pb && avio_tell(os->pb) >= of->limit_filesize))
            continue;
3848
        if (ost->frame_number >= ost->max_frames) {
3849 3850
            int j;
            for (j = 0; j < of->ctx->nb_streams; j++)
3851
                close_output_stream(output_streams[of->ost_index + j]);
3852 3853
            continue;
        }
3854

3855
        return 1;
3856
    }
3857

3858 3859
    return 0;
}
3860

3861
/**
3862
 * Select the output stream to process.
3863
 *
3864
 * @return  selected output stream, or NULL if none available
3865
 */
3866
static OutputStream *choose_output(void)
Fabrice Bellard's avatar
Fabrice Bellard committed
3867
{
3868 3869 3870
    int i;
    int64_t opts_min = INT64_MAX;
    OutputStream *ost_min = NULL;
3871

3872 3873
    for (i = 0; i < nb_output_streams; i++) {
        OutputStream *ost = output_streams[i];
3874 3875
        int64_t opts = ost->st->cur_dts == AV_NOPTS_VALUE ? INT64_MIN :
                       av_rescale_q(ost->st->cur_dts, ost->st->time_base,
3876
                                    AV_TIME_BASE_Q);
3877
        if (ost->st->cur_dts == AV_NOPTS_VALUE)
3878 3879 3880
            av_log(NULL, AV_LOG_DEBUG,
                "cur_dts is invalid st:%d (%d) [init:%d i_done:%d finish:%d] (this is harmless if it occurs once at the start per stream)\n",
                ost->st->index, ost->st->id, ost->initialized, ost->inputs_done, ost->finished);
3881

3882 3883 3884
        if (!ost->initialized && !ost->inputs_done)
            return ost;

3885
        if (!ost->finished && opts < opts_min) {
3886
            opts_min = opts;
3887
            ost_min  = ost->unavailable ? NULL : ost;
3888
        }
3889
    }
3890
    return ost_min;
3891
}
3892

3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904
static void set_tty_echo(int on)
{
#if HAVE_TERMIOS_H
    struct termios tty;
    if (tcgetattr(0, &tty) == 0) {
        if (on) tty.c_lflag |= ECHO;
        else    tty.c_lflag &= ~ECHO;
        tcsetattr(0, TCSANOW, &tty);
    }
#endif
}

3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934
static int check_keyboard_interaction(int64_t cur_time)
{
    int i, ret, key;
    static int64_t last_time;
    if (received_nb_signals)
        return AVERROR_EXIT;
    /* read_key() returns 0 on EOF */
    if(cur_time - last_time >= 100000 && !run_as_daemon){
        key =  read_key();
        last_time = cur_time;
    }else
        key = -1;
    if (key == 'q')
        return AVERROR_EXIT;
    if (key == '+') av_log_set_level(av_log_get_level()+10);
    if (key == '-') av_log_set_level(av_log_get_level()-10);
    if (key == 's') qp_hist     ^= 1;
    if (key == 'h'){
        if (do_hex_dump){
            do_hex_dump = do_pkt_dump = 0;
        } else if(do_pkt_dump){
            do_hex_dump = 1;
        } else
            do_pkt_dump = 1;
        av_log_set_level(AV_LOG_DEBUG);
    }
    if (key == 'c' || key == 'C'){
        char buf[4096], target[64], command[256], arg[256] = {0};
        double time;
        int k, n = 0;
3935
        fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
3936
        i = 0;
3937
        set_tty_echo(1);
3938 3939 3940 3941
        while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
            if (k > 0)
                buf[i++] = k;
        buf[i] = 0;
3942 3943
        set_tty_echo(0);
        fprintf(stderr, "\n");
3944 3945 3946 3947 3948 3949 3950 3951 3952 3953
        if (k > 0 &&
            (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
            av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
                   target, time, command, arg);
            for (i = 0; i < nb_filtergraphs; i++) {
                FilterGraph *fg = filtergraphs[i];
                if (fg->graph) {
                    if (time < 0) {
                        ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
                                                          key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
3954
                        fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
3955
                    } else if (key == 'c') {
3956
                        fprintf(stderr, "Queuing commands only on filters supporting the specific command is unsupported\n");
3957
                        ret = AVERROR_PATCHWELCOME;
3958 3959
                    } else {
                        ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3960
                        if (ret < 0)
3961
                            fprintf(stderr, "Queuing command failed with error %s\n", av_err2str(ret));
3962 3963
                    }
                }
3964
            }
3965 3966 3967 3968
        } else {
            av_log(NULL, AV_LOG_ERROR,
                   "Parse error, at least 3 arguments were expected, "
                   "only %d given in string '%s'\n", n, buf);
3969
        }
3970 3971 3972 3973 3974 3975
    }
    if (key == 'd' || key == 'D'){
        int debug=0;
        if(key == 'D') {
            debug = input_streams[0]->st->codec->debug<<1;
            if(!debug) debug = 1;
3976 3977 3978 3979 3980
            while(debug & (FF_DEBUG_DCT_COEFF
#if FF_API_DEBUG_MV
                                             |FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE
#endif
                                                                                  )) //unsupported, would just crash
3981
                debug += debug;
3982 3983 3984 3985
        }else{
            char buf[32];
            int k = 0;
            i = 0;
3986
            set_tty_echo(1);
3987 3988 3989 3990
            while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
                if (k > 0)
                    buf[i++] = k;
            buf[i] = 0;
3991 3992
            set_tty_echo(0);
            fprintf(stderr, "\n");
3993
            if (k <= 0 || sscanf(buf, "%d", &debug)!=1)
3994
                fprintf(stderr,"error parsing debug value\n");
3995
        }
3996 3997
        for(i=0;i<nb_input_streams;i++) {
            input_streams[i]->st->codec->debug = debug;
3998
        }
3999 4000
        for(i=0;i<nb_output_streams;i++) {
            OutputStream *ost = output_streams[i];
4001
            ost->enc_ctx->debug = debug;
4002 4003 4004
        }
        if(debug) av_log_set_level(AV_LOG_DEBUG);
        fprintf(stderr,"debug=%d\n", debug);
4005
    }
4006 4007 4008 4009 4010
    if (key == '?'){
        fprintf(stderr, "key    function\n"
                        "?      show this help\n"
                        "+      increase verbosity\n"
                        "-      decrease verbosity\n"
4011
                        "c      Send command to first matching filter supporting it\n"
4012
                        "C      Send/Queue command to all matching filters\n"
4013 4014 4015 4016 4017 4018 4019
                        "D      cycle through available debug modes\n"
                        "h      dump packets/hex press to cycle through the 3 states\n"
                        "q      quit\n"
                        "s      Show QP histogram\n"
        );
    }
    return 0;
4020 4021
}

4022
#if HAVE_THREADS
4023
static void *input_thread(void *arg)
4024
{
4025
    InputFile *f = arg;
4026
    unsigned flags = f->non_blocking ? AV_THREAD_MESSAGE_NONBLOCK : 0;
4027
    int ret = 0;
4028

4029
    while (1) {
4030 4031
        AVPacket pkt;
        ret = av_read_frame(f->ctx, &pkt);
4032

4033
        if (ret == AVERROR(EAGAIN)) {
4034
            av_usleep(10000);
4035
            continue;
4036 4037 4038
        }
        if (ret < 0) {
            av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
4039
            break;
4040
        }
4041 4042 4043 4044 4045 4046 4047 4048 4049
        ret = av_thread_message_queue_send(f->in_thread_queue, &pkt, flags);
        if (flags && ret == AVERROR(EAGAIN)) {
            flags = 0;
            ret = av_thread_message_queue_send(f->in_thread_queue, &pkt, flags);
            av_log(f->ctx, AV_LOG_WARNING,
                   "Thread message queue blocking; consider raising the "
                   "thread_queue_size option (current value: %d)\n",
                   f->thread_queue_size);
        }
4050 4051 4052 4053 4054
        if (ret < 0) {
            if (ret != AVERROR_EOF)
                av_log(f->ctx, AV_LOG_ERROR,
                       "Unable to send packet to main thread: %s\n",
                       av_err2str(ret));
4055
            av_packet_unref(&pkt);
4056 4057 4058
            av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
            break;
        }
4059 4060
    }

4061
    return NULL;
4062
}
4063

4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079
static void free_input_thread(int i)
{
    InputFile *f = input_files[i];
    AVPacket pkt;

    if (!f || !f->in_thread_queue)
        return;
    av_thread_message_queue_set_err_send(f->in_thread_queue, AVERROR_EOF);
    while (av_thread_message_queue_recv(f->in_thread_queue, &pkt, 0) >= 0)
        av_packet_unref(&pkt);

    pthread_join(f->thread, NULL);
    f->joined = 1;
    av_thread_message_queue_free(&f->in_thread_queue);
}

4080
static void free_input_threads(void)
4081
{
4082
    int i;
4083

4084 4085 4086
    for (i = 0; i < nb_input_files; i++)
        free_input_thread(i);
}
4087

4088 4089 4090 4091
static int init_input_thread(int i)
{
    int ret;
    InputFile *f = input_files[i];
4092

4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105
    if (nb_input_files == 1)
        return 0;

    if (f->ctx->pb ? !f->ctx->pb->seekable :
        strcmp(f->ctx->iformat->name, "lavfi"))
        f->non_blocking = 1;
    ret = av_thread_message_queue_alloc(&f->in_thread_queue,
                                        f->thread_queue_size, sizeof(AVPacket));
    if (ret < 0)
        return ret;

    if ((ret = pthread_create(&f->thread, NULL, input_thread, f))) {
        av_log(NULL, AV_LOG_ERROR, "pthread_create failed: %s. Try to increase `ulimit -v` or decrease `ulimit -s`.\n", strerror(ret));
4106
        av_thread_message_queue_free(&f->in_thread_queue);
4107
        return AVERROR(ret);
4108
    }
4109 4110

    return 0;
4111
}
4112

4113
static int init_input_threads(void)
4114
{
4115
    int i, ret;
4116

4117
    for (i = 0; i < nb_input_files; i++) {
4118
        ret = init_input_thread(i);
4119 4120
        if (ret < 0)
            return ret;
4121 4122 4123 4124
    }
    return 0;
}

4125
static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
4126
{
4127 4128 4129
    return av_thread_message_queue_recv(f->in_thread_queue, pkt,
                                        f->non_blocking ?
                                        AV_THREAD_MESSAGE_NONBLOCK : 0);
4130 4131
}
#endif
4132

4133 4134
static int get_input_packet(InputFile *f, AVPacket *pkt)
{
4135 4136 4137 4138
    if (f->rate_emu) {
        int i;
        for (i = 0; i < f->nb_streams; i++) {
            InputStream *ist = input_streams[f->ist_index + i];
4139
            int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
4140
            int64_t now = av_gettime_relative() - ist->start;
4141 4142 4143 4144 4145
            if (pts > now)
                return AVERROR(EAGAIN);
        }
    }

4146
#if HAVE_THREADS
4147 4148 4149 4150
    if (nb_input_files > 1)
        return get_input_packet_mt(f, pkt);
#endif
    return av_read_frame(f->ctx, pkt);
4151 4152
}

4153 4154 4155
static int got_eagain(void)
{
    int i;
4156 4157
    for (i = 0; i < nb_output_streams; i++)
        if (output_streams[i]->unavailable)
4158 4159 4160 4161 4162 4163 4164 4165 4166
            return 1;
    return 0;
}

static void reset_eagain(void)
{
    int i;
    for (i = 0; i < nb_input_files; i++)
        input_files[i]->eagain = 0;
4167 4168 4169 4170
    for (i = 0; i < nb_output_streams; i++)
        output_streams[i]->unavailable = 0;
}

4171 4172
// set duration to max(tmp, duration) in a proper time base and return duration's time_base
static AVRational duration_max(int64_t tmp, int64_t *duration, AVRational tmp_time_base,
4173
                               AVRational time_base)
4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197
{
    int ret;

    if (!*duration) {
        *duration = tmp;
        return tmp_time_base;
    }

    ret = av_compare_ts(*duration, time_base, tmp, tmp_time_base);
    if (ret < 0) {
        *duration = tmp;
        return tmp_time_base;
    }

    return time_base;
}

static int seek_to_start(InputFile *ifile, AVFormatContext *is)
{
    InputStream *ist;
    AVCodecContext *avctx;
    int i, ret, has_audio = 0;
    int64_t duration = 0;

4198
    ret = avformat_seek_file(is, -1, INT64_MIN, is->start_time, is->start_time, 0);
4199 4200 4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221
    if (ret < 0)
        return ret;

    for (i = 0; i < ifile->nb_streams; i++) {
        ist   = input_streams[ifile->ist_index + i];
        avctx = ist->dec_ctx;

        /* duration is the length of the last frame in a stream
         * when audio stream is present we don't care about
         * last video frame length because it's not defined exactly */
        if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples)
            has_audio = 1;
    }

    for (i = 0; i < ifile->nb_streams; i++) {
        ist   = input_streams[ifile->ist_index + i];
        avctx = ist->dec_ctx;

        if (has_audio) {
            if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples) {
                AVRational sample_rate = {1, avctx->sample_rate};

                duration = av_rescale_q(ist->nb_samples, sample_rate, ist->st->time_base);
4222
            } else {
4223
                continue;
4224
            }
4225 4226
        } else {
            if (ist->framerate.num) {
4227
                duration = av_rescale_q(1, av_inv_q(ist->framerate), ist->st->time_base);
4228
            } else if (ist->st->avg_frame_rate.num) {
4229
                duration = av_rescale_q(1, av_inv_q(ist->st->avg_frame_rate), ist->st->time_base);
4230 4231 4232
            } else {
                duration = 1;
            }
4233 4234 4235 4236 4237 4238 4239 4240 4241 4242
        }
        if (!ifile->duration)
            ifile->time_base = ist->st->time_base;
        /* the total duration of the stream, max_pts - min_pts is
         * the duration of the stream without the last frame */
        duration += ist->max_pts - ist->min_pts;
        ifile->time_base = duration_max(duration, &ifile->duration, ist->st->time_base,
                                        ifile->time_base);
    }

4243 4244
    if (ifile->loop > 0)
        ifile->loop--;
4245 4246 4247 4248

    return ret;
}

4249 4250
/*
 * Return
4251 4252 4253 4254 4255
 * - 0 -- one packet was read and processed
 * - AVERROR(EAGAIN) -- no packets were available for selected file,
 *   this function should be called again
 * - AVERROR_EOF -- this function should not be called again
 */
4256
static int process_input(int file_index)
4257
{
4258
    InputFile *ifile = input_files[file_index];
4259 4260 4261
    AVFormatContext *is;
    InputStream *ist;
    AVPacket pkt;
4262
    int ret, thread_ret, i, j;
4263
    int64_t duration;
4264
    int64_t pkt_dts;
4265 4266 4267 4268 4269 4270 4271 4272

    is  = ifile->ctx;
    ret = get_input_packet(ifile, &pkt);

    if (ret == AVERROR(EAGAIN)) {
        ifile->eagain = 1;
        return ret;
    }
4273
    if (ret < 0 && ifile->loop) {
4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284
        AVCodecContext *avctx;
        for (i = 0; i < ifile->nb_streams; i++) {
            ist = input_streams[ifile->ist_index + i];
            avctx = ist->dec_ctx;
            if (ist->decoding_needed) {
                ret = process_input_packet(ist, NULL, 1);
                if (ret>0)
                    return 0;
                avcodec_flush_buffers(avctx);
            }
        }
4285 4286 4287
#if HAVE_THREADS
        free_input_thread(file_index);
#endif
James Almer's avatar
James Almer committed
4288
        ret = seek_to_start(ifile, is);
4289 4290 4291 4292 4293
#if HAVE_THREADS
        thread_ret = init_input_thread(file_index);
        if (thread_ret < 0)
            return thread_ret;
#endif
James Almer's avatar
James Almer committed
4294 4295 4296 4297
        if (ret < 0)
            av_log(NULL, AV_LOG_WARNING, "Seek to start failed.\n");
        else
            ret = get_input_packet(ifile, &pkt);
4298 4299 4300 4301
        if (ret == AVERROR(EAGAIN)) {
            ifile->eagain = 1;
            return ret;
        }
4302
    }
4303 4304
    if (ret < 0) {
        if (ret != AVERROR_EOF) {
4305
            print_error(is->url, ret);
4306
            if (exit_on_error)
4307
                exit_program(1);
4308 4309 4310 4311
        }

        for (i = 0; i < ifile->nb_streams; i++) {
            ist = input_streams[ifile->ist_index + i];
4312
            if (ist->decoding_needed) {
4313
                ret = process_input_packet(ist, NULL, 0);
4314 4315 4316
                if (ret>0)
                    return 0;
            }
4317

4318 4319 4320
            /* mark all outputs that don't go through lavfi as finished */
            for (j = 0; j < nb_output_streams; j++) {
                OutputStream *ost = output_streams[j];
4321

4322 4323
                if (ost->source_index == ifile->ist_index + i &&
                    (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
4324
                    finish_output_stream(ost);
4325 4326 4327
            }
        }

4328
        ifile->eof_reached = 1;
4329
        return AVERROR(EAGAIN);
4330 4331 4332 4333 4334
    }

    reset_eagain();

    if (do_pkt_dump) {
4335
        av_pkt_dump_log2(NULL, AV_LOG_INFO, &pkt, do_hex_dump,
4336 4337 4338 4339 4340 4341 4342 4343 4344 4345
                         is->streams[pkt.stream_index]);
    }
    /* the following test is needed in case new streams appear
       dynamically in stream : we ignore them */
    if (pkt.stream_index >= ifile->nb_streams) {
        report_new_stream(file_index, &pkt);
        goto discard_packet;
    }

    ist = input_streams[ifile->ist_index + pkt.stream_index];
4346 4347

    ist->data_size += pkt.size;
4348
    ist->nb_packets++;
4349

4350 4351 4352
    if (ist->discard)
        goto discard_packet;

4353 4354 4355 4356 4357
    if (pkt.flags & AV_PKT_FLAG_CORRUPT) {
        av_log(NULL, exit_on_error ? AV_LOG_FATAL : AV_LOG_WARNING,
               "%s: corrupt input packet in stream %d\n", is->url, pkt.stream_index);
        if (exit_on_error)
            exit_program(1);
4358 4359
    }

4360 4361
    if (debug_ts) {
        av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
4362
               "next_dts:%s next_dts_time:%s next_pts:%s next_pts_time:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
4363
               ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->dec_ctx->codec_type),
4364 4365 4366 4367 4368 4369
               av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
               av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
               av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
               av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
               av_ts2str(input_files[ist->file_index]->ts_offset),
               av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
4370 4371
    }

4372
    if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
4373
        int64_t stime, stime2;
4374 4375 4376 4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392
        // Correcting starttime based on the enabled streams
        // FIXME this ideally should be done before the first use of starttime but we do not know which are the enabled streams at that point.
        //       so we instead do it here as part of discontinuity handling
        if (   ist->next_dts == AV_NOPTS_VALUE
            && ifile->ts_offset == -is->start_time
            && (is->iformat->flags & AVFMT_TS_DISCONT)) {
            int64_t new_start_time = INT64_MAX;
            for (i=0; i<is->nb_streams; i++) {
                AVStream *st = is->streams[i];
                if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
                    continue;
                new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
            }
            if (new_start_time > is->start_time) {
                av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
                ifile->ts_offset = -new_start_time;
            }
        }

4393 4394
        stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
        stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
4395
        ist->wrap_correction_done = 1;
4396 4397 4398

        if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
            pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
4399 4400
            ist->wrap_correction_done = 0;
        }
4401 4402
        if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
            pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
4403 4404 4405 4406
            ist->wrap_correction_done = 0;
        }
    }

4407
    /* add the stream-global side data to the first packet */
4408
    if (ist->nb_packets == 1) {
4409 4410 4411 4412
        for (i = 0; i < ist->st->nb_side_data; i++) {
            AVPacketSideData *src_sd = &ist->st->side_data[i];
            uint8_t *dst_data;

4413
            if (src_sd->type == AV_PKT_DATA_DISPLAYMATRIX)
4414
                continue;
4415 4416

            if (av_packet_get_side_data(&pkt, src_sd->type, NULL))
4417
                continue;
4418 4419 4420 4421 4422 4423 4424

            dst_data = av_packet_new_side_data(&pkt, src_sd->type, src_sd->size);
            if (!dst_data)
                exit_program(1);

            memcpy(dst_data, src_sd->data, src_sd->size);
        }
4425
    }
4426

4427 4428 4429 4430 4431 4432 4433 4434 4435 4436
    if (pkt.dts != AV_NOPTS_VALUE)
        pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
    if (pkt.pts != AV_NOPTS_VALUE)
        pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);

    if (pkt.pts != AV_NOPTS_VALUE)
        pkt.pts *= ist->ts_scale;
    if (pkt.dts != AV_NOPTS_VALUE)
        pkt.dts *= ist->ts_scale;

4437
    pkt_dts = av_rescale_q_rnd(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q, AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
4438 4439
    if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
         ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
4440
        pkt_dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
4441 4442
        && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
        int64_t delta   = pkt_dts - ifile->last_ts;
4443 4444
        if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
            delta >  1LL*dts_delta_threshold*AV_TIME_BASE){
4445 4446 4447 4448 4449 4450 4451 4452 4453
            ifile->ts_offset -= delta;
            av_log(NULL, AV_LOG_DEBUG,
                   "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
                   delta, ifile->ts_offset);
            pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
            if (pkt.pts != AV_NOPTS_VALUE)
                pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
        }
    }
4454

4455 4456 4457 4458 4459 4460 4461 4462 4463
    duration = av_rescale_q(ifile->duration, ifile->time_base, ist->st->time_base);
    if (pkt.pts != AV_NOPTS_VALUE) {
        pkt.pts += duration;
        ist->max_pts = FFMAX(pkt.pts, ist->max_pts);
        ist->min_pts = FFMIN(pkt.pts, ist->min_pts);
    }

    if (pkt.dts != AV_NOPTS_VALUE)
        pkt.dts += duration;
4464

4465
    pkt_dts = av_rescale_q_rnd(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q, AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
4466 4467
    if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
         ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
4468
         pkt_dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
4469 4470 4471
        !copy_ts) {
        int64_t delta   = pkt_dts - ist->next_dts;
        if (is->iformat->flags & AVFMT_TS_DISCONT) {
4472
            if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
4473
                delta >  1LL*dts_delta_threshold*AV_TIME_BASE ||
4474 4475 4476
                pkt_dts + AV_TIME_BASE/10 < FFMAX(ist->pts, ist->dts)) {
                ifile->ts_offset -= delta;
                av_log(NULL, AV_LOG_DEBUG,
4477 4478 4479 4480
                       "timestamp discontinuity for stream #%d:%d "
                       "(id=%d, type=%s): %"PRId64", new offset= %"PRId64"\n",
                       ist->file_index, ist->st->index, ist->st->id,
                       av_get_media_type_string(ist->dec_ctx->codec_type),
4481 4482 4483 4484 4485
                       delta, ifile->ts_offset);
                pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
                if (pkt.pts != AV_NOPTS_VALUE)
                    pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
            }
4486 4487
        } else {
            if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
4488
                 delta >  1LL*dts_error_threshold*AV_TIME_BASE) {
4489 4490 4491 4492 4493 4494 4495
                av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
                pkt.dts = AV_NOPTS_VALUE;
            }
            if (pkt.pts != AV_NOPTS_VALUE){
                int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
                delta   = pkt_pts - ist->next_dts;
                if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
4496
                     delta >  1LL*dts_error_threshold*AV_TIME_BASE) {
4497 4498 4499 4500 4501 4502 4503
                    av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
                    pkt.pts = AV_NOPTS_VALUE;
                }
            }
        }
    }

4504 4505 4506
    if (pkt.dts != AV_NOPTS_VALUE)
        ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);

4507
    if (debug_ts) {
4508
        av_log(NULL, AV_LOG_INFO, "demuxer+ffmpeg -> ist_index:%d type:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
4509
               ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->dec_ctx->codec_type),
4510 4511 4512 4513
               av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
               av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
               av_ts2str(input_files[ist->file_index]->ts_offset),
               av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
4514 4515
    }

4516 4517
    sub2video_heartbeat(ist, pkt.pts);

4518
    process_input_packet(ist, &pkt, 0);
4519 4520

discard_packet:
4521
    av_packet_unref(&pkt);
4522 4523 4524 4525

    return 0;
}

4526 4527 4528 4529 4530 4531 4532 4533 4534 4535 4536 4537 4538 4539 4540 4541 4542
/**
 * Perform a step of transcoding for the specified filter graph.
 *
 * @param[in]  graph     filter graph to consider
 * @param[out] best_ist  input stream where a frame would allow to continue
 * @return  0 for success, <0 for error
 */
static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
{
    int i, ret;
    int nb_requests, nb_requests_max = 0;
    InputFilter *ifilter;
    InputStream *ist;

    *best_ist = NULL;
    ret = avfilter_graph_request_oldest(graph->graph);
    if (ret >= 0)
4543
        return reap_filters(0);
4544 4545

    if (ret == AVERROR_EOF) {
4546
        ret = reap_filters(1);
4547 4548 4549 4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581
        for (i = 0; i < graph->nb_outputs; i++)
            close_output_stream(graph->outputs[i]->ost);
        return ret;
    }
    if (ret != AVERROR(EAGAIN))
        return ret;

    for (i = 0; i < graph->nb_inputs; i++) {
        ifilter = graph->inputs[i];
        ist = ifilter->ist;
        if (input_files[ist->file_index]->eagain ||
            input_files[ist->file_index]->eof_reached)
            continue;
        nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
        if (nb_requests > nb_requests_max) {
            nb_requests_max = nb_requests;
            *best_ist = ist;
        }
    }

    if (!*best_ist)
        for (i = 0; i < graph->nb_outputs; i++)
            graph->outputs[i]->ost->unavailable = 1;

    return 0;
}

/**
 * Run a single step of transcoding.
 *
 * @return  0 for success, <0 for error
 */
static int transcode_step(void)
{
    OutputStream *ost;
4582
    InputStream  *ist = NULL;
4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595
    int ret;

    ost = choose_output();
    if (!ost) {
        if (got_eagain()) {
            reset_eagain();
            av_usleep(10000);
            return 0;
        }
        av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
        return AVERROR_EOF;
    }

4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606
    if (ost->filter && !ost->filter->graph->graph) {
        if (ifilter_has_all_input_formats(ost->filter->graph)) {
            ret = configure_filtergraph(ost->filter->graph);
            if (ret < 0) {
                av_log(NULL, AV_LOG_ERROR, "Error reinitializing filters!\n");
                return ret;
            }
        }
    }

    if (ost->filter && ost->filter->graph->graph) {
4607 4608 4609 4610 4611 4612 4613 4614 4615
        if (!ost->initialized) {
            char error[1024] = {0};
            ret = init_output_stream(ost, error, sizeof(error));
            if (ret < 0) {
                av_log(NULL, AV_LOG_ERROR, "Error initializing output stream %d:%d -- %s\n",
                       ost->file_index, ost->index, error);
                exit_program(1);
            }
        }
4616 4617 4618 4619
        if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
            return ret;
        if (!ist)
            return 0;
4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632
    } else if (ost->filter) {
        int i;
        for (i = 0; i < ost->filter->graph->nb_inputs; i++) {
            InputFilter *ifilter = ost->filter->graph->inputs[i];
            if (!ifilter->ist->got_output && !input_files[ifilter->ist->file_index]->eof_reached) {
                ist = ifilter->ist;
                break;
            }
        }
        if (!ist) {
            ost->inputs_done = 1;
            return 0;
        }
4633 4634 4635 4636 4637 4638 4639 4640 4641 4642 4643
    } else {
        av_assert0(ost->source_index >= 0);
        ist = input_streams[ost->source_index];
    }

    ret = process_input(ist->file_index);
    if (ret == AVERROR(EAGAIN)) {
        if (input_files[ist->file_index]->eagain)
            ost->unavailable = 1;
        return 0;
    }
4644

4645 4646 4647
    if (ret < 0)
        return ret == AVERROR_EOF ? 0 : ret;

4648
    return reap_filters(0);
4649 4650
}

4651 4652 4653
/*
 * The following code is the main loop of the file converter
 */
4654
static int transcode(void)
4655
{
4656
    int ret, i;
4657
    AVFormatContext *os;
4658
    OutputStream *ost;
4659 4660
    InputStream *ist;
    int64_t timer_start;
4661
    int64_t total_packets_written = 0;
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4662

4663
    ret = transcode_init();
4664 4665 4666
    if (ret < 0)
        goto fail;

4667 4668
    if (stdin_interaction) {
        av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
4669 4670
    }

4671
    timer_start = av_gettime_relative();
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4672

4673
#if HAVE_THREADS
4674 4675 4676
    if ((ret = init_input_threads()) < 0)
        goto fail;
#endif
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4677

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4678
    while (!received_sigterm) {
4679
        int64_t cur_time= av_gettime_relative();
4680

4681 4682 4683 4684
        /* if 'q' pressed, exits */
        if (stdin_interaction)
            if (check_keyboard_interaction(cur_time) < 0)
                break;
4685

4686
        /* check if there's any stream where output is still needed */
4687 4688
        if (!need_output()) {
            av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
4689
            break;
4690
        }
4691

4692
        ret = transcode_step();
4693
        if (ret < 0 && ret != AVERROR_EOF) {
4694
            av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", av_err2str(ret));
4695
            break;
4696
        }
4697 4698

        /* dump report by using the output first video and audio streams */
4699
        print_report(0, timer_start, cur_time);
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4700
    }
4701
#if HAVE_THREADS
4702 4703
    free_input_threads();
#endif
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4704

4705 4706
    /* at the end of stream, we must flush the decoder buffers */
    for (i = 0; i < nb_input_streams; i++) {
4707
        ist = input_streams[i];
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4708
        if (!input_files[ist->file_index]->eof_reached) {
4709
            process_input_packet(ist, NULL, 0);
4710
        }
4711
    }
4712
    flush_encoders();
4713

4714
    term_exit();
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4715

4716
    /* write the trailer if needed and close file */
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4717
    for (i = 0; i < nb_output_files; i++) {
4718
        os = output_files[i]->ctx;
4719 4720 4721 4722
        if (!output_files[i]->header_written) {
            av_log(NULL, AV_LOG_ERROR,
                   "Nothing was written into output file %d (%s), because "
                   "at least one of its streams received no packets.\n",
4723
                   i, os->url);
4724 4725
            continue;
        }
4726
        if ((ret = av_write_trailer(os)) < 0) {
4727
            av_log(NULL, AV_LOG_ERROR, "Error writing trailer of %s: %s\n", os->url, av_err2str(ret));
4728 4729
            if (exit_on_error)
                exit_program(1);
4730
        }
4731
    }
4732

4733
    /* dump report by using the first video and audio streams */
4734
    print_report(1, timer_start, av_gettime_relative());
4735

4736
    /* close each encoder */
4737
    for (i = 0; i < nb_output_streams; i++) {
4738
        ost = output_streams[i];
4739
        if (ost->encoding_needed) {
4740
            av_freep(&ost->enc_ctx->stats_in);
4741
        }
4742 4743 4744 4745 4746 4747
        total_packets_written += ost->packets_written;
    }

    if (!total_packets_written && (abort_on_flags & ABORT_ON_FLAG_EMPTY_OUTPUT)) {
        av_log(NULL, AV_LOG_FATAL, "Empty output\n");
        exit_program(1);
4748 4749
    }

4750 4751
    /* close each decoder */
    for (i = 0; i < nb_input_streams; i++) {
4752
        ist = input_streams[i];
4753
        if (ist->decoding_needed) {
4754
            avcodec_close(ist->dec_ctx);
4755
            if (ist->hwaccel_uninit)
4756
                ist->hwaccel_uninit(ist->dec_ctx);
4757 4758
        }
    }
4759

4760
    av_buffer_unref(&hw_device_ctx);
4761
    hw_device_free_all();
4762

4763 4764 4765 4766
    /* finished ! */
    ret = 0;

 fail:
4767
#if HAVE_THREADS
4768 4769
    free_input_threads();
#endif
4770

4771 4772
    if (output_streams) {
        for (i = 0; i < nb_output_streams; i++) {
4773
            ost = output_streams[i];
4774 4775
            if (ost) {
                if (ost->logfile) {
4776 4777 4778 4779
                    if (fclose(ost->logfile))
                        av_log(NULL, AV_LOG_ERROR,
                               "Error closing logfile, loss of information possible: %s\n",
                               av_err2str(AVERROR(errno)));
4780
                    ost->logfile = NULL;
4781
                }
4782
                av_freep(&ost->forced_kf_pts);
4783
                av_freep(&ost->apad);
4784
                av_freep(&ost->disposition);
4785
                av_dict_free(&ost->encoder_opts);
4786
                av_dict_free(&ost->sws_dict);
4787
                av_dict_free(&ost->swr_opts);
4788
                av_dict_free(&ost->resample_opts);
4789 4790 4791
            }
        }
    }
4792
    return ret;
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4793 4794
}

4795
static BenchmarkTimeStamps get_benchmark_time_stamps(void)
4796
{
4797
    BenchmarkTimeStamps time_stamps = { av_gettime_relative() };
4798 4799
#if HAVE_GETRUSAGE
    struct rusage rusage;
4800

4801
    getrusage(RUSAGE_SELF, &rusage);
4802 4803 4804 4805
    time_stamps.user_usec =
        (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
    time_stamps.sys_usec =
        (rusage.ru_stime.tv_sec * 1000000LL) + rusage.ru_stime.tv_usec;
4806 4807 4808 4809 4810
#elif HAVE_GETPROCESSTIMES
    HANDLE proc;
    FILETIME c, e, k, u;
    proc = GetCurrentProcess();
    GetProcessTimes(proc, &c, &e, &k, &u);
4811 4812 4813 4814
    time_stamps.user_usec =
        ((int64_t)u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
    time_stamps.sys_usec =
        ((int64_t)k.dwHighDateTime << 32 | k.dwLowDateTime) / 10;
4815
#else
4816
    time_stamps.user_usec = time_stamps.sys_usec = 0;
4817
#endif
4818
    return time_stamps;
4819
}
4820

4821 4822 4823 4824 4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835 4836 4837 4838
static int64_t getmaxrss(void)
{
#if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
    struct rusage rusage;
    getrusage(RUSAGE_SELF, &rusage);
    return (int64_t)rusage.ru_maxrss * 1024;
#elif HAVE_GETPROCESSMEMORYINFO
    HANDLE proc;
    PROCESS_MEMORY_COUNTERS memcounters;
    proc = GetCurrentProcess();
    memcounters.cb = sizeof(memcounters);
    GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
    return memcounters.PeakPagefileUsage;
#else
    return 0;
#endif
}

4839
static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
4840 4841 4842
{
}

4843 4844
int main(int argc, char **argv)
{
4845
    int i, ret;
4846
    BenchmarkTimeStamps ti;
4847

4848 4849
    init_dynload();

4850
    register_exit(ffmpeg_cleanup);
4851

4852 4853
    setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */

4854
    av_log_set_flags(AV_LOG_SKIP_REPEATED);
4855
    parse_loglevel(argc, argv, options);
4856

4857
    if(argc>1 && !strcmp(argv[1], "-d")){
4858
        run_as_daemon=1;
4859 4860 4861 4862 4863
        av_log_set_callback(log_callback_null);
        argc--;
        argv++;
    }

4864
#if CONFIG_AVDEVICE
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Luca Abeni committed
4865
    avdevice_register_all();
4866
#endif
4867
    avformat_network_init();
4868

4869
    show_banner(argc, argv, options);
4870

4871
    /* parse options and open all input/output files */
4872
    ret = ffmpeg_parse_options(argc, argv);
4873
    if (ret < 0)
4874
        exit_program(1);
4875

4876
    if (nb_output_files <= 0 && nb_input_files == 0) {
4877
        show_usage();
4878
        av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
4879
        exit_program(1);
4880
    }
4881

4882 4883
    /* file converter / grab */
    if (nb_output_files <= 0) {
4884
        av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
4885
        exit_program(1);
4886 4887
    }

4888 4889 4890 4891 4892
    for (i = 0; i < nb_output_files; i++) {
        if (strcmp(output_files[i]->ctx->oformat->name, "rtp"))
            want_sdp = 0;
    }

4893
    current_time = ti = get_benchmark_time_stamps();
4894
    if (transcode() < 0)
4895
        exit_program(1);
4896
    if (do_benchmark) {
4897
        int64_t utime, stime, rtime;
4898
        current_time = get_benchmark_time_stamps();
4899 4900 4901
        utime = current_time.user_usec - ti.user_usec;
        stime = current_time.sys_usec  - ti.sys_usec;
        rtime = current_time.real_usec - ti.real_usec;
4902 4903 4904
        av_log(NULL, AV_LOG_INFO,
               "bench: utime=%0.3fs stime=%0.3fs rtime=%0.3fs\n",
               utime / 1000000.0, stime / 1000000.0, rtime / 1000000.0);
4905
    }
4906 4907
    av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
           decode_error_stat[0], decode_error_stat[1]);
4908
    if ((decode_error_stat[0] + decode_error_stat[1]) * max_error_rate < decode_error_stat[1])
4909
        exit_program(69);
4910

4911 4912
    exit_program(received_nb_signals ? 255 : main_return_code);
    return main_return_code;
4913
}