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];
665

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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)
681 682 683 684 685 686 687 688
{
    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;
738

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) {
754 755
            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)) {
764 765 766 767 768 769 770 771 772 773 774
        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;
860 861 862 863
        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);
864 865 866 867
            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++;
929

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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939 940 941 942 943 944 945 946 947 948 949 950
    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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963 964 965 966 967

    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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    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);
1033 1034 1035 1036 1037
        }

        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 1082 1083
    if (!ost->filters_script &&
        !ost->filters &&
        next_picture &&
        ist &&
1084 1085
        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));
1086 1087
    }

1088 1089 1090 1091 1092 1093
    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 {
1094
        delta0 = sync_ipts - ost->sync_opts; // delta0 is the "drift" between the input frame (next_picture) and where it would fall in the output.
1095
        delta  = delta0 + duration;
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1097
        /* by default, we output a single frame */
1098
        nb0_frames = 0; // tracks the number of times the PREVIOUS frame should be duplicated, mostly for variable framerate (VFR)
1099
        nb_frames = 1;
1100

1101 1102
        format_video_sync = video_sync_method;
        if (format_video_sync == VSYNC_AUTO) {
1103
            if(!strcmp(of->ctx->oformat->name, "avi")) {
1104 1105
                format_video_sync = VSYNC_VFR;
            } else
1106
                format_video_sync = (of->ctx->oformat->flags & AVFMT_VARIABLE_FPS) ? ((of->ctx->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
1107 1108 1109 1110 1111 1112 1113 1114 1115
            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;
            }
1116
        }
1117
        ost->is_cfr = (format_video_sync == VSYNC_CFR || format_video_sync == VSYNC_VSCFR);
1118

1119 1120 1121 1122 1123
        if (delta0 < 0 &&
            delta > 0 &&
            format_video_sync != VSYNC_PASSTHROUGH &&
            format_video_sync != VSYNC_DROP) {
            if (delta0 < -0.6) {
1124
                av_log(NULL, AV_LOG_VERBOSE, "Past duration %f too large\n", -delta0);
1125
            } else
1126
                av_log(NULL, AV_LOG_DEBUG, "Clipping frame in rate conversion by %f\n", -delta0);
1127 1128 1129
            sync_ipts = ost->sync_opts;
            duration += delta0;
            delta0 = 0;
1130
        }
1131

1132 1133
        switch (format_video_sync) {
        case VSYNC_VSCFR:
1134 1135
            if (ost->frame_number == 0 && delta0 >= 0.5) {
                av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial frames\n", (int)lrintf(delta0));
1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159
                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:
1160
            ost->sync_opts = lrint(sync_ipts);
1161 1162 1163
            break;
        default:
            av_assert0(0);
1164
        }
1165
    }
1166 1167

    nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1168
    nb0_frames = FFMIN(nb0_frames, nb_frames);
1169 1170 1171 1172 1173 1174

    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;

1175
    if (nb0_frames == 0 && ost->last_dropped) {
1176
        nb_frames_drop++;
1177
        av_log(NULL, AV_LOG_VERBOSE,
1178
               "*** dropping frame %d from stream %d at ts %"PRId64"\n",
1179
               ost->frame_number, ost->st->index, ost->last_frame->pts);
1180
    }
1181
    if (nb_frames > (nb0_frames && ost->last_dropped) + (nb_frames > nb0_frames)) {
1182
        if (nb_frames > dts_error_threshold * 30) {
1183
            av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
1184 1185
            nb_frames_drop++;
            return;
1186
        }
1187
        nb_frames_dup += nb_frames - (nb0_frames && ost->last_dropped) - (nb_frames > nb0_frames);
1188
        av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1189 1190 1191 1192
        if (nb_frames_dup > dup_warning) {
            av_log(NULL, AV_LOG_WARNING, "More than %d frames duplicated\n", dup_warning);
            dup_warning *= 10;
        }
1193
    }
1194
    ost->last_dropped = nb_frames == nb0_frames && next_picture;
1195

1196 1197 1198 1199 1200 1201 1202 1203
    /* 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;
1204

1205 1206 1207 1208
        if (i < nb0_frames && ost->last_frame) {
            in_picture = ost->last_frame;
        } else
            in_picture = next_picture;
1209

1210 1211
        if (!in_picture)
            return;
1212

1213
        in_picture->pts = ost->sync_opts;
1214

1215 1216
        if (!check_recording_time(ost))
            return;
1217

1218
        if (enc->flags & (AV_CODEC_FLAG_INTERLACED_DCT | AV_CODEC_FLAG_INTERLACED_ME) &&
1219 1220
            ost->top_field_first >= 0)
            in_picture->top_field_first = !!ost->top_field_first;
1221

1222
        if (in_picture->interlaced_frame) {
1223
            if (enc->codec->id == AV_CODEC_ID_MJPEG)
1224
                mux_par->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
1225
            else
1226
                mux_par->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
1227
        } else
1228
            mux_par->field_order = AV_FIELD_PROGRESSIVE;
1229

1230
        in_picture->quality = enc->global_quality;
1231
        in_picture->pict_type = 0;
1232

1233 1234 1235 1236
        if (ost->forced_kf_ref_pts == AV_NOPTS_VALUE &&
            in_picture->pts != AV_NOPTS_VALUE)
            ost->forced_kf_ref_pts = in_picture->pts;

1237
        pts_time = in_picture->pts != AV_NOPTS_VALUE ?
1238
            (in_picture->pts - ost->forced_kf_ref_pts) * av_q2d(enc->time_base) : NAN;
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1239
        if (ost->forced_kf_index < ost->forced_kf_count &&
1240
            in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
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1241
            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);
1248
            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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1269
        }
1270

1271
        if (forced_keyframe) {
1272
            in_picture->pict_type = AV_PICTURE_TYPE_I;
1273 1274 1275
            av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
        }

1276
        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);
        }

1284 1285
        ost->frames_encoded++;

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        ret = avcodec_send_frame(enc, in_picture);
        if (ret < 0)
            goto error;
1289 1290
        // 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;
1299

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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));
            }

1307
            if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & AV_CODEC_CAP_DELAY))
1308
                pkt.pts = ost->sync_opts;
1309

1310
            av_packet_rescale_ts(&pkt, enc->time_base, ost->mux_timebase);
1311

1312 1313 1314
            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;
1320
            output_packet(of, &pkt, ost, 0);
1321

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1322 1323 1324
            /* if two pass, output log */
            if (ost->logfile && enc->stats_out) {
                fprintf(ost->logfile, "%s", enc->stats_out);
1325
            }
1326
        }
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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++;
1334

1335 1336 1337
        if (vstats_filename && frame_size)
            do_video_stats(ost, frame_size);
    }
1338 1339 1340 1341

    if (!ost->last_frame)
        ost->last_frame = av_frame_alloc();
    av_frame_unref(ost->last_frame);
1342
    if (next_picture && ost->last_frame)
1343
        av_frame_ref(ost->last_frame, next_picture);
1344 1345
    else
        av_frame_free(&ost->last_frame);
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1346 1347 1348 1349 1350

    return;
error:
    av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
    exit_program(1);
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1351 1352
}

Aneesh Dogra's avatar
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1353
static double psnr(double d)
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1354
{
1355
    return -10.0 * log10(d);
1356
}
1357

1358
static void do_video_stats(OutputStream *ost, int frame_size)
1359
{
1360 1361 1362
    AVCodecContext *enc;
    int frame_number;
    double ti1, bitrate, avg_bitrate;
1363

1364 1365 1366 1367 1368
    /* 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");
1369
            exit_program(1);
1370
        }
1371
    }
1372

1373
    enc = ost->enc_ctx;
1374
    if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1375
        frame_number = ost->st->nb_frames;
1376 1377 1378 1379 1380 1381 1382
        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);
        }
1383

1384 1385
        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)));
1386

1387 1388
        fprintf(vstats_file,"f_size= %6d ", frame_size);
        /* compute pts value */
1389
        ti1 = av_stream_get_end_pts(ost->st) * av_q2d(ost->st->time_base);
1390 1391
        if (ti1 < 0.01)
            ti1 = 0.01;
1392

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1393
        bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1394
        avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0;
1395
        fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1396
               (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
1397
        fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(ost->pict_type));
1398
    }
1399
}
1400

1401 1402
static int init_output_stream(OutputStream *ost, char *error, int error_len);

1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415
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;
    }
}

1416
/**
1417 1418 1419 1420 1421
 * Get and encode new output from any of the filtergraphs, without causing
 * activity.
 *
 * @return  0 for success, <0 for severe errors
 */
1422
static int reap_filters(int flush)
1423 1424
{
    AVFrame *filtered_frame = NULL;
1425
    int i;
1426

1427 1428 1429 1430
    /* 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];
1431
        AVFilterContext *filter;
1432
        AVCodecContext *enc = ost->enc_ctx;
1433 1434
        int ret = 0;

1435
        if (!ost->filter || !ost->filter->graph->graph)
1436
            continue;
1437
        filter = ost->filter->filter;
1438

1439
        if (!ost->initialized) {
1440
            char error[1024] = "";
1441 1442 1443 1444 1445 1446 1447 1448
            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);
            }
        }

1449
        if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
1450
            return AVERROR(ENOMEM);
1451
        }
1452 1453 1454
        filtered_frame = ost->filtered_frame;

        while (1) {
1455
            double float_pts = AV_NOPTS_VALUE; // this is identical to filtered_frame.pts but with higher precision
1456
            ret = av_buffersink_get_frame_flags(filter, filtered_frame,
1457 1458 1459 1460
                                               AV_BUFFERSINK_FLAG_NO_REQUEST);
            if (ret < 0) {
                if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
                    av_log(NULL, AV_LOG_WARNING,
1461
                           "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1462
                } else if (flush && ret == AVERROR_EOF) {
1463
                    if (av_buffersink_get_type(filter) == AVMEDIA_TYPE_VIDEO)
1464
                        do_video_out(of, ost, NULL, AV_NOPTS_VALUE);
1465
                }
1466 1467
                break;
            }
1468 1469 1470 1471
            if (ost->finished) {
                av_frame_unref(filtered_frame);
                continue;
            }
1472
            if (filtered_frame->pts != AV_NOPTS_VALUE) {
1473
                int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1474
                AVRational filter_tb = av_buffersink_get_time_base(filter);
1475 1476 1477 1478 1479
                AVRational tb = enc->time_base;
                int extra_bits = av_clip(29 - av_log2(tb.den), 0, 16);

                tb.den <<= extra_bits;
                float_pts =
1480
                    av_rescale_q(filtered_frame->pts, filter_tb, tb) -
1481 1482 1483 1484 1485
                    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);

1486
                filtered_frame->pts =
1487
                    av_rescale_q(filtered_frame->pts, filter_tb, enc->time_base) -
1488
                    av_rescale_q(start_time, AV_TIME_BASE_Q, enc->time_base);
1489
            }
1490

1491
            switch (av_buffersink_get_type(filter)) {
1492
            case AVMEDIA_TYPE_VIDEO:
1493
                if (!ost->frame_aspect_ratio.num)
1494
                    enc->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1495

1496
                if (debug_ts) {
1497
                    av_log(NULL, AV_LOG_INFO, "filter -> pts:%s pts_time:%s exact:%f time_base:%d/%d\n",
1498
                            av_ts2str(filtered_frame->pts), av_ts2timestr(filtered_frame->pts, &enc->time_base),
1499
                            float_pts,
1500 1501 1502
                            enc->time_base.num, enc->time_base.den);
                }

1503
                do_video_out(of, ost, filtered_frame, float_pts);
1504 1505
                break;
            case AVMEDIA_TYPE_AUDIO:
1506
                if (!(enc->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE) &&
1507
                    enc->channels != filtered_frame->channels) {
1508 1509 1510 1511
                    av_log(NULL, AV_LOG_ERROR,
                           "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
                    break;
                }
1512
                do_audio_out(of, ost, filtered_frame);
1513 1514 1515 1516 1517 1518
                break;
            default:
                // TODO support subtitle filters
                av_assert0(0);
            }

1519
            av_frame_unref(filtered_frame);
1520
        }
1521
    }
1522 1523

    return 0;
1524 1525
}

1526 1527 1528 1529 1530 1531
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;
1532
    int i, j;
1533
    int pass1_used = 1;
1534 1535 1536

    for (i = 0; i < nb_output_streams; i++) {
        OutputStream *ost = output_streams[i];
1537
        switch (ost->enc_ctx->codec_type) {
1538 1539 1540 1541 1542
            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;
        }
1543
        extra_size += ost->enc_ctx->extradata_size;
1544
        data_size  += ost->data_size;
1545
        if (   (ost->enc_ctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2))
1546
            != AV_CODEC_FLAG_PASS1)
1547
            pass1_used = 0;
1548 1549
    }

1550
    if (data_size && total_size>0 && total_size >= data_size)
1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563
        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");
1564 1565 1566 1567 1568 1569 1570

    /* 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",
1571
               i, f->ctx->url);
1572 1573 1574

        for (j = 0; j < f->nb_streams; j++) {
            InputStream *ist = input_streams[f->ist_index + j];
1575
            enum AVMediaType type = ist->dec_ctx->codec_type;
1576 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

            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",
1605
               i, of->ctx->url);
1606 1607 1608

        for (j = 0; j < of->ctx->nb_streams; j++) {
            OutputStream *ost = output_streams[of->ost_index + j];
1609
            enum AVMediaType type = ost->enc_ctx->codec_type;
1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632

            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);
    }
1633
    if(video_size + data_size + audio_size + subtitle_size + extra_size == 0){
1634 1635 1636 1637 1638 1639
        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");
        }
1640 1641 1642
    }
}

1643
static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1644
{
1645
    AVBPrint buf, buf_script;
1646 1647 1648 1649 1650
    OutputStream *ost;
    AVFormatContext *oc;
    int64_t total_size;
    AVCodecContext *enc;
    int frame_number, vid, i;
1651
    double bitrate;
1652
    double speed;
1653
    int64_t pts = INT64_MIN + 1;
1654 1655
    static int64_t last_time = -1;
    static int qp_histogram[52];
1656
    int hours, mins, secs, us;
1657
    const char *hours_sign;
1658
    int ret;
1659
    float t;
1660

1661
    if (!print_stats && !is_last_report && !progress_avio)
1662
        return;
1663

1664 1665 1666
    if (!is_last_report) {
        if (last_time == -1) {
            last_time = cur_time;
1667
            return;
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1668
        }
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        if ((cur_time - last_time) < 500000)
            return;
        last_time = cur_time;
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    }

1674 1675
    t = (cur_time-timer_start) / 1000000.0;

1676

1677
    oc = output_files[0]->ctx;
1678

1679
    total_size = avio_size(oc->pb);
1680
    if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
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1681
        total_size = avio_tell(oc->pb);
1682

1683
    vid = 0;
1684
    av_bprint_init(&buf, 0, AV_BPRINT_SIZE_AUTOMATIC);
1685
    av_bprint_init(&buf_script, 0, AV_BPRINT_SIZE_AUTOMATIC);
1686
    for (i = 0; i < nb_output_streams; i++) {
1687
        float q = -1;
1688
        ost = output_streams[i];
1689
        enc = ost->enc_ctx;
1690 1691 1692
        if (!ost->stream_copy)
            q = ost->quality / (float) FF_QP2LAMBDA;

1693
        if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1694
            av_bprintf(&buf, "q=%2.1f ", q);
1695 1696
            av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
                       ost->file_index, ost->index, q);
1697
        }
1698
        if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1699
            float fps;
1700

1701
            frame_number = ost->frame_number;
1702
            fps = t > 1 ? frame_number / t : 0;
1703
            av_bprintf(&buf, "frame=%5d fps=%3.*f q=%3.1f ",
1704 1705
                     frame_number, fps < 9.95, fps, q);
            av_bprintf(&buf_script, "frame=%d\n", frame_number);
1706
            av_bprintf(&buf_script, "fps=%.2f\n", fps);
1707 1708
            av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
                       ost->file_index, ost->index, q);
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1709
            if (is_last_report)
1710
                av_bprintf(&buf, "L");
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1711
            if (qp_hist) {
1712 1713
                int j;
                int qp = lrintf(q);
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1714
                if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1715
                    qp_histogram[qp]++;
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1716
                for (j = 0; j < 32; j++)
1717
                    av_bprintf(&buf, "%X", av_log2(qp_histogram[j] + 1));
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1718
            }
1719

1720
            if ((enc->flags & AV_CODEC_FLAG_PSNR) && (ost->pict_type != AV_PICTURE_TYPE_NONE || is_last_report)) {
1721
                int j;
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1722 1723
                double error, error_sum = 0;
                double scale, scale_sum = 0;
1724
                double p;
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1725
                char type[3] = { 'Y','U','V' };
1726
                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 {
1732
                        error = ost->error[j];
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1733
                        scale = enc->width * enc->height * 255.0 * 255.0;
1734
                    }
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1735 1736
                    if (j)
                        scale /= 4;
1737 1738
                    error_sum += error;
                    scale_sum += scale;
1739
                    p = psnr(error / scale);
1740
                    av_bprintf(&buf, "%c:%2.2f ", type[j], p);
1741
                    av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1742
                               ost->file_index, ost->index, type[j] | 32, p);
1743
                }
1744
                p = psnr(error_sum / scale_sum);
1745
                av_bprintf(&buf, "*:%2.2f ", psnr(error_sum / scale_sum));
1746 1747
                av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
                           ost->file_index, ost->index, p);
1748 1749
            }
            vid = 1;
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1750
        }
1751
        /* compute min output value */
1752 1753
        if (av_stream_get_end_pts(ost->st) != AV_NOPTS_VALUE)
            pts = FFMAX(pts, av_rescale_q(av_stream_get_end_pts(ost->st),
1754
                                          ost->st->time_base, AV_TIME_BASE_Q));
1755
        if (is_last_report)
1756
            nb_frames_drop += ost->last_dropped;
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1757 1758
    }

1759 1760
    secs = FFABS(pts) / AV_TIME_BASE;
    us = FFABS(pts) % AV_TIME_BASE;
1761 1762 1763 1764
    mins = secs / 60;
    secs %= 60;
    hours = mins / 60;
    mins %= 60;
1765
    hours_sign = (pts < 0) ? "-" : "";
1766

1767
    bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1768
    speed = t != 0.0 ? (double)pts / AV_TIME_BASE / t : -1;
1769

1770 1771
    if (total_size < 0) av_bprintf(&buf, "size=N/A time=");
    else                av_bprintf(&buf, "size=%8.0fkB time=", total_size / 1024.0);
1772
    if (pts == AV_NOPTS_VALUE) {
1773
        av_bprintf(&buf, "N/A ");
1774
    } else {
1775 1776
        av_bprintf(&buf, "%s%02d:%02d:%02d.%02d ",
                   hours_sign, hours, mins, secs, (100 * us) / AV_TIME_BASE);
1777
    }
1778 1779

    if (bitrate < 0) {
1780
        av_bprintf(&buf, "bitrate=N/A");
1781 1782
        av_bprintf(&buf_script, "bitrate=N/A\n");
    }else{
1783
        av_bprintf(&buf, "bitrate=%6.1fkbits/s", bitrate);
1784 1785 1786
        av_bprintf(&buf_script, "bitrate=%6.1fkbits/s\n", bitrate);
    }

1787 1788
    if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
    else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1789
    if (pts == AV_NOPTS_VALUE) {
1790
        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 {
1794
        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);
    }
1799

1800
    if (nb_frames_dup || nb_frames_drop)
1801
        av_bprintf(&buf, " dup=%d drop=%d", nb_frames_dup, nb_frames_drop);
1802 1803
    av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
    av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1804

1805
    if (speed < 0) {
1806
        av_bprintf(&buf, " speed=N/A");
1807 1808
        av_bprintf(&buf_script, "speed=N/A\n");
    } else {
1809
        av_bprintf(&buf, " speed=%4.3gx", speed);
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        av_bprintf(&buf_script, "speed=%4.3gx\n", speed);
    }

1813
    if (print_stats || is_last_report) {
1814
        const char end = is_last_report ? '\n' : '\r';
1815
        if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1816
            fprintf(stderr, "%s    %c", buf.str, end);
1817
        } else
1818
            av_log(NULL, AV_LOG_INFO, "%s    %c", buf.str, end);
1819

1820
        fflush(stderr);
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1821
    }
1822
    av_bprint_finalize(&buf, NULL);
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1823

1824 1825 1826 1827 1828 1829 1830 1831
    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) {
1832 1833 1834
            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));
1835 1836
        }
    }
1837

1838 1839
    if (is_last_report)
        print_final_stats(total_size);
1840
}
1841

1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854
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;
}

1855
static void flush_encoders(void)
1856 1857
{
    int i, ret;
1858

1859
    for (i = 0; i < nb_output_streams; i++) {
1860
        OutputStream   *ost = output_streams[i];
1861
        AVCodecContext *enc = ost->enc_ctx;
1862
        OutputFile      *of = output_files[ost->file_index];
1863

1864
        if (!ost->encoding_needed)
1865 1866
            continue;

1867 1868 1869 1870
        // Try to enable encoding with no input frames.
        // Maybe we should just let encoding fail instead.
        if (!ost->initialized) {
            FilterGraph *fg = ost->filter->graph;
1871
            char error[1024] = "";
1872 1873 1874 1875 1876 1877 1878 1879 1880

            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];
1881 1882
                    if (ifilter->format < 0)
                        ifilter_parameters_from_codecpar(ifilter, ifilter->ist->st->codecpar);
1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904
                }

                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);
            }
        }

1905
        if (enc->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1906 1907
            continue;

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1908 1909 1910
        if (enc->codec_type != AVMEDIA_TYPE_VIDEO && enc->codec_type != AVMEDIA_TYPE_AUDIO)
            continue;

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1911
        for (;;) {
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1912
            const char *desc = NULL;
1913 1914
            AVPacket pkt;
            int pkt_size;
1915

1916
            switch (enc->codec_type) {
1917
            case AVMEDIA_TYPE_AUDIO:
1918
                desc   = "audio";
1919 1920
                break;
            case AVMEDIA_TYPE_VIDEO:
1921
                desc   = "video";
1922 1923
                break;
            default:
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1924
                av_assert0(0);
1925 1926
            }

1927 1928 1929
            av_init_packet(&pkt);
            pkt.data = NULL;
            pkt.size = 0;
1930

1931
            update_benchmark(NULL);
1932

1933 1934 1935
            while ((ret = avcodec_receive_packet(enc, &pkt)) == AVERROR(EAGAIN)) {
                ret = avcodec_send_frame(enc, NULL);
                if (ret < 0) {
1936 1937 1938
                    av_log(NULL, AV_LOG_FATAL, "%s encoding failed: %s\n",
                           desc,
                           av_err2str(ret));
1939
                    exit_program(1);
1940
                }
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
            }

            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);
            }
1967 1968
        }
    }
1969
}
1970

1971 1972 1973 1974 1975
/*
 * Check whether a packet from ist should be written into ost at this time
 */
static int check_output_constraints(InputStream *ist, OutputStream *ost)
{
1976 1977
    OutputFile *of = output_files[ost->file_index];
    int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1978

1979 1980
    if (ost->source_index != ist_index)
        return 0;
1981

1982 1983 1984
    if (ost->finished)
        return 0;

1985
    if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
1986
        return 0;
1987

1988 1989
    return 1;
}
1990

1991 1992
static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
{
1993
    OutputFile *of = output_files[ost->file_index];
1994
    InputFile   *f = input_files [ist->file_index];
1995
    int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1996
    int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->mux_timebase);
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1997 1998 1999
    AVPacket opkt = { 0 };

    av_init_packet(&opkt);
2000

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2001 2002 2003 2004 2005 2006
    // EOF: flush output bitstream filters.
    if (!pkt) {
        output_packet(of, &opkt, ost, 1);
        return;
    }

2007 2008 2009 2010
    if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
        !ost->copy_initial_nonkeyframes)
        return;

2011 2012 2013 2014 2015 2016 2017
    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))
2018 2019
            return;
    }
2020

2021
    if (of->recording_time != INT64_MAX &&
2022
        ist->pts >= of->recording_time + start_time) {
2023
        close_output_stream(ost);
2024
        return;
2025 2026
    }

2027 2028
    if (f->recording_time != INT64_MAX) {
        start_time = f->ctx->start_time;
2029
        if (f->start_time != AV_NOPTS_VALUE && copy_ts)
2030
            start_time += f->start_time;
2031 2032
        if (ist->pts >= f->recording_time + start_time) {
            close_output_stream(ost);
2033 2034 2035 2036
            return;
        }
    }

2037
    /* force the input stream PTS */
2038
    if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
2039
        ost->sync_opts++;
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2040

2041
    if (pkt->pts != AV_NOPTS_VALUE)
2042
        opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->mux_timebase) - ost_tb_start_time;
2043 2044
    else
        opkt.pts = AV_NOPTS_VALUE;
2045

2046
    if (pkt->dts == AV_NOPTS_VALUE)
2047
        opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->mux_timebase);
2048
    else
2049
        opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->mux_timebase);
2050
    opkt.dts -= ost_tb_start_time;
2051

2052
    if (ost->st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
2053
        int duration = av_get_audio_frame_duration(ist->dec_ctx, pkt->size);
2054
        if(!duration)
2055
            duration = ist->dec_ctx->frame_size;
2056
        opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
2057
                                               (AVRational){1, ist->dec_ctx->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
2058
                                               ost->mux_timebase) - ost_tb_start_time;
2059 2060
    }

2061 2062
    opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->mux_timebase);

2063
    opkt.flags    = pkt->flags;
2064

2065 2066 2067 2068 2069
    if (pkt->buf) {
        opkt.buf = av_buffer_ref(pkt->buf);
        if (!opkt.buf)
            exit_program(1);
    }
2070 2071 2072
    opkt.data = pkt->data;
    opkt.size = pkt->size;

2073
    av_copy_packet_side_data(&opkt, pkt);
2074

2075
    output_packet(of, &opkt, ost, 0);
2076
}
2077

2078
int guess_input_channel_layout(InputStream *ist)
2079
{
2080
    AVCodecContext *dec = ist->dec_ctx;
2081

2082 2083
    if (!dec->channel_layout) {
        char layout_name[256];
2084

2085 2086
        if (dec->channels > ist->guess_layout_max)
            return 0;
2087 2088 2089 2090 2091
        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);
2092
        av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
2093
               "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
2094
    }
2095
    return 1;
2096 2097
}

2098
static void check_decode_result(InputStream *ist, int *got_output, int ret)
2099 2100 2101 2102 2103 2104
{
    if (*got_output || ret<0)
        decode_error_stat[ret<0] ++;

    if (ret < 0 && exit_on_error)
        exit_program(1);
2105

2106
    if (*got_output && ist) {
2107
        if (ist->decoded_frame->decode_error_flags || (ist->decoded_frame->flags & AV_FRAME_FLAG_CORRUPT)) {
2108 2109 2110 2111
            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);
2112 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
// 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;
    }

2148 2149 2150 2151 2152 2153 2154
    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));
2172 2173
                    if (ret < 0) {
                        av_frame_free(&tmp);
2174
                        return ret;
2175
                    }
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                }
                av_fifo_generic_write(ifilter->frame_queue, &tmp, sizeof(tmp), NULL);
                return 0;
            }
        }

        ret = reap_filters(1);
        if (ret < 0 && ret != AVERROR_EOF) {
2184
            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) {
2197 2198
        if (ret != AVERROR_EOF)
            av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", av_err2str(ret));
2199 2200 2201 2202 2203 2204
        return ret;
    }

    return 0;
}

2205
static int ifilter_send_eof(InputFilter *ifilter, int64_t pts)
2206
{
2207
    int ret;
2208 2209 2210 2211

    ifilter->eof = 1;

    if (ifilter->filter) {
2212
        ret = av_buffersrc_close(ifilter->filter, pts, AV_BUFFERSRC_FLAG_PUSH);
2213 2214 2215 2216
        if (ret < 0)
            return ret;
    } else {
        // the filtergraph was never configured
2217 2218 2219 2220 2221 2222
        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;
        }
2223 2224 2225 2226 2227
    }

    return 0;
}

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2228 2229
// 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
2230 2231
// 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;
}

2255 2256 2257 2258 2259
static int send_frame_to_filters(InputStream *ist, AVFrame *decoded_frame)
{
    int i, ret;
    AVFrame *f;

2260
    av_assert1(ist->nb_filters > 0); /* ensure ret is initialized */
2261 2262 2263 2264 2265 2266 2267 2268
    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;
2269
        ret = ifilter_send_frame(ist->filters[i], f);
2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280
        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;
}

2281 2282
static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output,
                        int *decode_failed)
2283
{
2284
    AVFrame *decoded_frame;
2285
    AVCodecContext *avctx = ist->dec_ctx;
2286
    int ret, err = 0;
2287
    AVRational decoded_frame_tb;
2288

2289
    if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
2290
        return AVERROR(ENOMEM);
2291 2292
    if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
        return AVERROR(ENOMEM);
2293
    decoded_frame = ist->decoded_frame;
2294

2295
    update_benchmark(NULL);
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2296
    ret = decode(avctx, decoded_frame, got_output, pkt);
2297
    update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
2298 2299
    if (ret < 0)
        *decode_failed = 1;
2300 2301

    if (ret >= 0 && avctx->sample_rate <= 0) {
2302
        av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
2303
        ret = AVERROR_INVALIDDATA;
2304
    }
2305

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2306 2307
    if (ret != AVERROR_EOF)
        check_decode_result(ist, got_output, ret);
2308

2309
    if (!*got_output || ret < 0)
2310
        return ret;
2311

2312 2313 2314
    ist->samples_decoded += decoded_frame->nb_samples;
    ist->frames_decoded++;

2315 2316 2317 2318 2319 2320
    /* 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;
2321

2322
    if (decoded_frame->pts != AV_NOPTS_VALUE) {
2323
        decoded_frame_tb   = ist->st->time_base;
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2324
    } else if (pkt && pkt->pts != AV_NOPTS_VALUE) {
2325 2326 2327 2328 2329 2330
        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;
    }
2331
    if (decoded_frame->pts != AV_NOPTS_VALUE)
2332
        decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
2333 2334
                                              (AVRational){1, avctx->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
                                              (AVRational){1, avctx->sample_rate});
2335
    ist->nb_samples = decoded_frame->nb_samples;
2336
    err = send_frame_to_filters(ist, decoded_frame);
2337

2338 2339 2340
    av_frame_unref(ist->filter_frame);
    av_frame_unref(decoded_frame);
    return err < 0 ? err : ret;
2341 2342
}

2343
static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *duration_pts, int eof,
2344
                        int *decode_failed)
2345
{
2346
    AVFrame *decoded_frame;
2347
    int i, ret = 0, err = 0;
2348
    int64_t best_effort_timestamp;
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2349 2350 2351 2352 2353 2354 2355 2356
    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;
2357

2358 2359 2360
    if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
        return AVERROR(ENOMEM);
    if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
2361
        return AVERROR(ENOMEM);
2362
    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;
    }
2379

2380
    update_benchmark(NULL);
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2381
    ret = decode(ist->dec_ctx, decoded_frame, got_output, pkt ? &avpkt : NULL);
2382
    update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
2383 2384
    if (ret < 0)
        *decode_failed = 1;
2385 2386 2387

    // The following line may be required in some cases where there is no parser
    // or the parser does not has_b_frames correctly
2388
    if (ist->st->codecpar->video_delay < ist->dec_ctx->has_b_frames) {
2389
        if (ist->dec_ctx->codec_id == AV_CODEC_ID_H264) {
2390
            ist->st->codecpar->video_delay = ist->dec_ctx->has_b_frames;
2391
        } else
2392
            av_log(ist->dec_ctx, AV_LOG_WARNING,
2393
                   "video_delay is larger in decoder than demuxer %d > %d.\n"
2394 2395
                   "If you want to help, upload a sample "
                   "of this file to ftp://upload.ffmpeg.org/incoming/ "
2396
                   "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n",
2397
                   ist->dec_ctx->has_b_frames,
2398
                   ist->st->codecpar->video_delay);
2399
    }
2400

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2401 2402
    if (ret != AVERROR_EOF)
        check_decode_result(ist, got_output, ret);
2403

2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417
    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);
        }
    }

2418
    if (!*got_output || ret < 0)
2419
        return ret;
2420

2421 2422
    if(ist->top_field_first>=0)
        decoded_frame->top_field_first = ist->top_field_first;
2423

2424 2425
    ist->frames_decoded++;

2426
    if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
2427
        err = ist->hwaccel_retrieve_data(ist->dec_ctx, decoded_frame);
2428 2429 2430
        if (err < 0)
            goto fail;
    }
2431 2432
    ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;

2433
    best_effort_timestamp= decoded_frame->best_effort_timestamp;
2434
    *duration_pts = decoded_frame->pkt_duration;
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2435

2436 2437 2438
    if (ist->framerate.num)
        best_effort_timestamp = ist->cfr_next_pts++;

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2439 2440 2441 2442 2443 2444 2445 2446
    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--;
    }

2447 2448 2449 2450 2451 2452
    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;
    }
2453

2454 2455
    if (debug_ts) {
        av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
2456 2457 2458 2459 2460 2461 2462
               "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);
2463 2464
    }

2465 2466
    if (ist->st->sample_aspect_ratio.num)
        decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2467

2468
    err = send_frame_to_filters(ist, decoded_frame);
2469

2470
fail:
2471 2472 2473
    av_frame_unref(ist->filter_frame);
    av_frame_unref(decoded_frame);
    return err < 0 ? err : ret;
2474 2475
}

2476 2477
static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output,
                               int *decode_failed)
2478
{
2479
    AVSubtitle subtitle;
2480
    int free_sub = 1;
2481
    int i, ret = avcodec_decode_subtitle2(ist->dec_ctx,
2482
                                          &subtitle, got_output, pkt);
2483

2484
    check_decode_result(NULL, got_output, ret);
2485

2486
    if (ret < 0 || !*got_output) {
2487
        *decode_failed = 1;
2488 2489
        if (!pkt->size)
            sub2video_flush(ist);
2490
        return ret;
2491
    }
2492

2493
    if (ist->fix_sub_duration) {
2494
        int end = 1;
2495
        if (ist->prev_sub.got_output) {
2496 2497
            end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
                             1000, AV_TIME_BASE);
2498
            if (end < ist->prev_sub.subtitle.end_display_time) {
2499
                av_log(ist->dec_ctx, AV_LOG_DEBUG,
2500
                       "Subtitle duration reduced from %"PRId32" to %d%s\n",
2501 2502
                       ist->prev_sub.subtitle.end_display_time, end,
                       end <= 0 ? ", dropping it" : "");
2503 2504 2505 2506 2507 2508
                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);
2509 2510
        if (end <= 0)
            goto out;
2511 2512
    }

2513 2514 2515
    if (!*got_output)
        return ret;

2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530
    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;
    }
2531

2532
    if (!subtitle.num_rects)
2533
        goto out;
2534

2535 2536
    ist->frames_decoded++;

2537
    for (i = 0; i < nb_output_streams; i++) {
2538
        OutputStream *ost = output_streams[i];
2539

2540 2541
        if (!check_output_constraints(ist, ost) || !ost->encoding_needed
            || ost->enc->type != AVMEDIA_TYPE_SUBTITLE)
2542
            continue;
2543

2544
        do_subtitle_out(output_files[ost->file_index], ost, &subtitle);
2545
    }
2546

2547
out:
2548 2549
    if (free_sub)
        avsubtitle_free(&subtitle);
2550
    return ret;
2551
}
2552

2553 2554
static int send_filter_eof(InputStream *ist)
{
2555
    int i, ret;
2556 2557 2558 2559
    /* 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);

2560
    for (i = 0; i < ist->nb_filters; i++) {
2561
        ret = ifilter_send_eof(ist->filters[i], pts);
2562 2563
        if (ret < 0)
            return ret;
2564 2565 2566 2567
    }
    return 0;
}

2568
/* pkt = NULL means EOF (needed to flush decoder buffers) */
2569
static int process_input_packet(InputStream *ist, const AVPacket *pkt, int no_eof)
2570
{
2571
    int ret = 0, i;
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2572 2573
    int repeating = 0;
    int eof_reached = 0;
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Fabrice Bellard committed
2574

2575
    AVPacket avpkt;
2576
    if (!ist->saw_first_ts) {
2577
        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;
2578
        ist->pts = 0;
2579
        if (pkt && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2580 2581
            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
2582
        }
2583 2584
        ist->saw_first_ts = 1;
    }
2585

2586
    if (ist->next_dts == AV_NOPTS_VALUE)
2587 2588 2589
        ist->next_dts = ist->dts;
    if (ist->next_pts == AV_NOPTS_VALUE)
        ist->next_pts = ist->pts;
2590

2591
    if (!pkt) {
2592 2593 2594 2595 2596 2597 2598
        /* EOF handling */
        av_init_packet(&avpkt);
        avpkt.data = NULL;
        avpkt.size = 0;
    } else {
        avpkt = *pkt;
    }
2599

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2600
    if (pkt && pkt->dts != AV_NOPTS_VALUE) {
2601
        ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2602
        if (ist->dec_ctx->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2603
            ist->next_pts = ist->pts = ist->dts;
2604
    }
2605

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2606
    // while we have more to decode or while the decoder did output something on EOF
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2607
    while (ist->decoding_needed) {
2608
        int64_t duration_dts = 0;
2609
        int64_t duration_pts = 0;
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2610
        int got_output = 0;
2611
        int decode_failed = 0;
2612

2613 2614
        ist->pts = ist->next_pts;
        ist->dts = ist->next_dts;
2615

2616
        switch (ist->dec_ctx->codec_type) {
2617
        case AVMEDIA_TYPE_AUDIO:
2618 2619
            ret = decode_audio    (ist, repeating ? NULL : &avpkt, &got_output,
                                   &decode_failed);
2620 2621
            break;
        case AVMEDIA_TYPE_VIDEO:
2622
            ret = decode_video    (ist, repeating ? NULL : &avpkt, &got_output, &duration_pts, !pkt,
2623
                                   &decode_failed);
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2624 2625
            if (!repeating || !pkt || got_output) {
                if (pkt && pkt->duration) {
2626
                    duration_dts = av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
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2627 2628
                } 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;
2629
                    duration_dts = ((int64_t)AV_TIME_BASE *
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2630 2631 2632
                                    ist->dec_ctx->framerate.den * ticks) /
                                    ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame;
                }
2633

2634 2635
                if(ist->dts != AV_NOPTS_VALUE && duration_dts) {
                    ist->next_dts += duration_dts;
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                }else
                    ist->next_dts = AV_NOPTS_VALUE;
            }
2639

2640 2641 2642 2643 2644 2645 2646
            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;
                }
            }
2647 2648
            break;
        case AVMEDIA_TYPE_SUBTITLE:
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2649 2650
            if (repeating)
                break;
2651
            ret = transcode_subtitles(ist, &avpkt, &got_output, &decode_failed);
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2652 2653
            if (!pkt && ret >= 0)
                ret = AVERROR_EOF;
2654
            break;
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        default:
            return -1;
2657
        }
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2658

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2659 2660 2661 2662 2663
        if (ret == AVERROR_EOF) {
            eof_reached = 1;
            break;
        }

2664
        if (ret < 0) {
2665 2666 2667 2668 2669 2670 2671 2672
            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)
2673 2674 2675
                exit_program(1);
            break;
        }
2676

2677 2678 2679
        if (got_output)
            ist->got_output = 1;

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2680 2681
        if (!got_output)
            break;
2682

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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)
2692
            break;
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2693 2694

        repeating = 1;
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2695 2696
    }

2697
    /* after flushing, send an EOF on all the filter inputs attached to the stream */
2698
    /* except when looping we need to flush but not to send an EOF */
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2699
    if (!pkt && ist->decoding_needed && eof_reached && !no_eof) {
2700 2701 2702 2703 2704 2705 2706
        int ret = send_filter_eof(ist);
        if (ret < 0) {
            av_log(NULL, AV_LOG_FATAL, "Error marking filters as finished\n");
            exit_program(1);
        }
    }

2707
    /* handle stream copy */
2708
    if (!ist->decoding_needed && pkt) {
2709
        ist->dts = ist->next_dts;
2710
        switch (ist->dec_ctx->codec_type) {
2711
        case AVMEDIA_TYPE_AUDIO:
2712
            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:
2721
            if (ist->framerate.num) {
2722 2723 2724 2725
                // 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);
2726
            } else if (pkt->duration) {
2727
                ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2728
            } else if(ist->dec_ctx->framerate.num != 0) {
2729
                int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict + 1 : ist->dec_ctx->ticks_per_frame;
2730
                ist->next_dts += ((int64_t)AV_TIME_BASE *
2731 2732
                                  ist->dec_ctx->framerate.den * ticks) /
                                  ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame;
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2733
            }
2734
            break;
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2735
        }
2736 2737
        ist->pts = ist->dts;
        ist->next_pts = ist->next_dts;
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2738
    }
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2739
    for (i = 0; i < nb_output_streams; i++) {
2740
        OutputStream *ost = output_streams[i];
2741

2742 2743
        if (!check_output_constraints(ist, ost) || ost->encoding_needed)
            continue;
2744

2745 2746
        do_streamcopy(ist, ost, pkt);
    }
2747

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2748
    return !eof_reached;
2749 2750
}

2751
static void print_sdp(void)
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2752
{
2753
    char sdp[16384];
2754
    int i;
2755 2756
    int j;
    AVIOContext *sdp_pb;
2757 2758 2759 2760 2761 2762
    AVFormatContext **avc;

    for (i = 0; i < nb_output_files; i++) {
        if (!output_files[i]->header_written)
            return;
    }
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2763

2764
    avc = av_malloc_array(nb_output_files, sizeof(*avc));
2765
    if (!avc)
2766
        exit_program(1);
2767 2768 2769 2770 2771 2772 2773
    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++;
        }
    }

2774 2775 2776
    if (!j)
        goto fail;

2777 2778 2779 2780 2781 2782 2783 2784 2785 2786
    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);
2787
            avio_closep(&sdp_pb);
2788
            av_freep(&sdp_filename);
2789 2790
        }
    }
2791

2792
fail:
2793
    av_freep(&avc);
2794 2795
}

2796 2797 2798 2799 2800 2801
static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
{
    InputStream *ist = s->opaque;
    const enum AVPixelFormat *p;
    int ret;

2802
    for (p = pix_fmts; *p != AV_PIX_FMT_NONE; p++) {
2803
        const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
2804 2805
        const AVCodecHWConfig  *config = NULL;
        int i;
2806 2807 2808 2809

        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;
            }
2828

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
            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) {
2861 2862 2863 2864
                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);
2865
                return AV_PIX_FMT_NONE;
2866 2867
            }
        }
2868 2869 2870 2871 2872 2873 2874

        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;
        }

2875
        ist->hwaccel_pix_fmt = *p;
2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891
        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);
}

2892
static int init_input_stream(int ist_index, char *error, int error_len)
2893
{
2894
    int ret;
2895
    InputStream *ist = input_streams[ist_index];
2896

2897 2898 2899
    if (ist->decoding_needed) {
        AVCodec *codec = ist->dec;
        if (!codec) {
2900
            snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2901
                    avcodec_get_name(ist->dec_ctx->codec_id), ist->file_index, ist->st->index);
2902
            return AVERROR(EINVAL);
2903 2904
        }

2905 2906 2907 2908
        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;
2909

2910
        av_opt_set_int(ist->dec_ctx, "refcounted_frames", 1, 0);
2911 2912
        if (ist->dec_ctx->codec_id == AV_CODEC_ID_DVB_SUBTITLE &&
           (ist->decoding_needed & DECODING_FOR_OST)) {
2913
            av_dict_set(&ist->decoder_opts, "compute_edt", "1", AV_DICT_DONT_OVERWRITE);
2914 2915 2916
            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");
        }
2917

2918 2919
        av_dict_set(&ist->decoder_opts, "sub_text_format", "ass", AV_DICT_DONT_OVERWRITE);

2920 2921
        /* Useful for subtitles retiming by lavf (FIXME), skipping samples in
         * audio, and video decoders such as cuvid or mediacodec */
2922
        ist->dec_ctx->pkt_timebase = ist->st->time_base;
2923

2924 2925
        if (!av_dict_get(ist->decoder_opts, "threads", NULL, 0))
            av_dict_set(&ist->decoder_opts, "threads", "auto", 0);
2926 2927 2928
        /* 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);
2929 2930 2931 2932 2933 2934 2935 2936 2937

        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;
        }

2938
        if ((ret = avcodec_open2(ist->dec_ctx, codec, &ist->decoder_opts)) < 0) {
2939 2940
            if (ret == AVERROR_EXPERIMENTAL)
                abort_codec_experimental(codec, 0);
2941 2942 2943 2944

            snprintf(error, error_len,
                     "Error while opening decoder for input stream "
                     "#%d:%d : %s",
2945
                     ist->file_index, ist->st->index, av_err2str(ret));
2946
            return ret;
2947
        }
2948
        assert_avoptions(ist->decoder_opts);
2949
    }
2950

2951
    ist->next_pts = AV_NOPTS_VALUE;
2952
    ist->next_dts = AV_NOPTS_VALUE;
2953

2954
    return 0;
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2955 2956
}

2957
static InputStream *get_input_stream(OutputStream *ost)
2958
{
2959 2960 2961
    if (ost->source_index >= 0)
        return input_streams[ost->source_index];
    return NULL;
2962 2963
}

2964 2965
static int compare_int64(const void *a, const void *b)
{
2966
    return FFDIFFSIGN(*(const int64_t *)a, *(const int64_t *)b);
2967 2968
}

2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985
/* 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 "
2986
               "(incorrect codec parameters ?): %s\n",
2987 2988 2989 2990 2991 2992
               file_index, av_err2str(ret));
        return ret;
    }
    //assert_avoptions(of->opts);
    of->header_written = 1;

2993
    av_dump_format(of->ctx, file_index, of->ctx->url, 1);
2994 2995 2996 2997

    if (sdp_filename || want_sdp)
        print_sdp();

2998 2999 3000 3001
    /* flush the muxing queues */
    for (i = 0; i < of->ctx->nb_streams; i++) {
        OutputStream *ost = output_streams[of->ost_index + i];

3002 3003 3004 3005
        /* 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;

3006 3007 3008
        while (av_fifo_size(ost->muxing_queue)) {
            AVPacket pkt;
            av_fifo_generic_read(ost->muxing_queue, &pkt, sizeof(pkt), NULL);
3009
            write_packet(of, &pkt, ost, 1);
3010 3011 3012
        }
    }

3013 3014 3015
    return 0;
}

3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035
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) {
3036
            av_log(NULL, AV_LOG_ERROR, "Error initializing bitstream filter: %s\n",
3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051
                   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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3052 3053 3054 3055 3056 3057 3058 3059
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;
3060
    uint32_t codec_tag = par_dst->codec_tag;
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3061 3062 3063

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

3064 3065 3066
    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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3067 3068 3069 3070 3071
    if (ret < 0) {
        av_log(NULL, AV_LOG_FATAL,
               "Error setting up codec context options.\n");
        return ret;
    }
3072 3073 3074 3075 3076 3077 3078

    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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3079

3080 3081
    if (!codec_tag) {
        unsigned int codec_tag_tmp;
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3082
        if (!of->ctx->oformat->codec_tag ||
3083 3084 3085
            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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3086 3087
    }

3088 3089 3090
    ret = avcodec_parameters_copy(par_dst, par_src);
    if (ret < 0)
        return ret;
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3091

3092
    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
3103 3104
    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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3105

3106 3107 3108 3109
    // 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);

3110 3111 3112
    // 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];
3116
            uint8_t *dst_data;
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3117

3118 3119
            dst_data = av_stream_new_side_data(ost->st, sd_src->type, sd_src->size);
            if (!dst_data)
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3120
                return AVERROR(ENOMEM);
3121
            memcpy(dst_data, sd_src->data, sd_src->size);
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        }
    }

3125 3126 3127 3128 3129 3130 3131
    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);

3590
        ost->st->codec->codec= ost->enc_ctx->codec;
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Timothy Gu committed
3591
    } 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" },
3611
            { "attached_pic"        , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_ATTACHED_PIC      },    .unit = "flags" },
3612 3613
            { "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" },
3614
            { "dependent"           , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DEPENDENT         },    .unit = "flags" },
3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630
            { "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;
    }

3631 3632 3633 3634 3635 3636 3637
    /* 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;

3638 3639 3640 3641 3642 3643
    ost->initialized = 1;

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

3644 3645 3646
    return ret;
}

3647
static void report_new_stream(int input_index, AVPacket *pkt)
3648
{
3649 3650 3651 3652 3653 3654 3655
    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",
3656
           av_get_media_type_string(st->codecpar->codec_type),
3657 3658 3659
           input_index, pkt->stream_index,
           pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
    file->nb_streams_warn = pkt->stream_index + 1;
3660 3661
}

3662
static int transcode_init(void)
3663
{
3664
    int ret = 0, i, j, k;
3665
    AVFormatContext *oc;
3666
    OutputStream *ost;
3667
    InputStream *ist;
3668
    char error[1024] = {0};
3669

3670 3671 3672 3673
    for (i = 0; i < nb_filtergraphs; i++) {
        FilterGraph *fg = filtergraphs[i];
        for (j = 0; j < fg->nb_outputs; j++) {
            OutputFilter *ofilter = fg->outputs[j];
3674
            if (!ofilter->ost || ofilter->ost->source_index >= 0)
3675 3676 3677 3678 3679 3680 3681 3682 3683 3684
                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;
        }
    }

3685 3686
    /* init framerate emulation */
    for (i = 0; i < nb_input_files; i++) {
3687
        InputFile *ifile = input_files[i];
3688 3689
        if (ifile->rate_emu)
            for (j = 0; j < ifile->nb_streams; j++)
3690
                input_streams[j + ifile->ist_index]->start = av_gettime_relative();
3691
    }
3692

3693 3694
    /* init input streams */
    for (i = 0; i < nb_input_streams; i++)
3695 3696 3697
        if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
            for (i = 0; i < nb_output_streams; i++) {
                ost = output_streams[i];
3698
                avcodec_close(ost->enc_ctx);
3699
            }
3700
            goto dump_format;
3701
        }
3702

3703 3704
    /* open each encoder */
    for (i = 0; i < nb_output_streams; i++) {
3705 3706 3707 3708
        // skip streams fed from filtergraphs until we have a frame for them
        if (output_streams[i]->filter)
            continue;

3709 3710 3711 3712 3713
        ret = init_output_stream(output_streams[i], error, sizeof(error));
        if (ret < 0)
            goto dump_format;
    }

3714 3715
    /* discard unused programs */
    for (i = 0; i < nb_input_files; i++) {
3716
        InputFile *ifile = input_files[i];
3717 3718 3719
        for (j = 0; j < ifile->ctx->nb_programs; j++) {
            AVProgram *p = ifile->ctx->programs[j];
            int discard  = AVDISCARD_ALL;
3720

3721
            for (k = 0; k < p->nb_stream_indexes; k++)
3722
                if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
3723 3724 3725 3726
                    discard = AVDISCARD_DEFAULT;
                    break;
                }
            p->discard = discard;
3727
        }
3728 3729
    }

3730 3731 3732 3733 3734 3735 3736 3737 3738 3739
    /* 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;
        }
    }

3740 3741
 dump_format:
    /* dump the stream mapping */
3742
    av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
3743 3744
    for (i = 0; i < nb_input_streams; i++) {
        ist = input_streams[i];
3745

3746
        for (j = 0; j < ist->nb_filters; j++) {
Timothy Gu's avatar
Timothy Gu committed
3747
            if (!filtergraph_is_simple(ist->filters[j]->graph)) {
3748 3749
                av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
                       ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
3750
                       ist->filters[j]->name);
3751 3752 3753 3754
                if (nb_filtergraphs > 1)
                    av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
                av_log(NULL, AV_LOG_INFO, "\n");
            }
3755 3756 3757
        }
    }

3758
    for (i = 0; i < nb_output_streams; i++) {
3759
        ost = output_streams[i];
3760

3761 3762 3763 3764 3765
        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;
3766
        }
3767

Timothy Gu's avatar
Timothy Gu committed
3768
        if (ost->filter && !filtergraph_is_simple(ost->filter->graph)) {
3769
            /* output from a complex graph */
3770
            av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
3771 3772
            if (nb_filtergraphs > 1)
                av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
3773

3774 3775
            av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
                   ost->index, ost->enc ? ost->enc->name : "?");
3776
            continue;
3777
        }
3778

3779
        av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
3780 3781
               input_streams[ost->source_index]->file_index,
               input_streams[ost->source_index]->st->index,
3782 3783
               ost->file_index,
               ost->index);
3784
        if (ost->sync_ist != input_streams[ost->source_index])
3785
            av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
3786 3787
                   ost->sync_ist->file_index,
                   ost->sync_ist->st->index);
3788
        if (ost->stream_copy)
3789
            av_log(NULL, AV_LOG_INFO, " (copy)");
3790 3791 3792 3793 3794 3795 3796
        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 = "?";
3797
            const AVCodecDescriptor *desc;
3798 3799 3800

            if (in_codec) {
                decoder_name  = in_codec->name;
3801 3802 3803
                desc = avcodec_descriptor_get(in_codec->id);
                if (desc)
                    in_codec_name = desc->name;
3804 3805 3806 3807 3808 3809
                if (!strcmp(decoder_name, in_codec_name))
                    decoder_name = "native";
            }

            if (out_codec) {
                encoder_name   = out_codec->name;
3810 3811 3812
                desc = avcodec_descriptor_get(out_codec->id);
                if (desc)
                    out_codec_name = desc->name;
3813
                if (!strcmp(encoder_name, out_codec_name))
3814 3815 3816 3817 3818 3819 3820
                    encoder_name = "native";
            }

            av_log(NULL, AV_LOG_INFO, " (%s (%s) -> %s (%s))",
                   in_codec_name, decoder_name,
                   out_codec_name, encoder_name);
        }
3821
        av_log(NULL, AV_LOG_INFO, "\n");
3822 3823
    }

3824
    if (ret) {
3825
        av_log(NULL, AV_LOG_ERROR, "%s\n", error);
3826
        return ret;
3827 3828
    }

3829
    atomic_store(&transcode_init_done, 1);
3830

3831 3832
    return 0;
}
3833

3834
/* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
3835 3836 3837
static int need_output(void)
{
    int i;
3838

3839 3840 3841 3842
    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;
3843

3844
        if (ost->finished ||
3845 3846
            (os->pb && avio_tell(os->pb) >= of->limit_filesize))
            continue;
3847
        if (ost->frame_number >= ost->max_frames) {
3848 3849
            int j;
            for (j = 0; j < of->ctx->nb_streams; j++)
3850
                close_output_stream(output_streams[of->ost_index + j]);
3851 3852
            continue;
        }
3853

3854
        return 1;
3855
    }
3856

3857 3858
    return 0;
}
3859

3860
/**
3861
 * Select the output stream to process.
3862
 *
3863
 * @return  selected output stream, or NULL if none available
3864
 */
3865
static OutputStream *choose_output(void)
Fabrice Bellard's avatar
Fabrice Bellard committed
3866
{
3867 3868 3869
    int i;
    int64_t opts_min = INT64_MAX;
    OutputStream *ost_min = NULL;
3870

3871 3872
    for (i = 0; i < nb_output_streams; i++) {
        OutputStream *ost = output_streams[i];
3873 3874
        int64_t opts = ost->st->cur_dts == AV_NOPTS_VALUE ? INT64_MIN :
                       av_rescale_q(ost->st->cur_dts, ost->st->time_base,
3875
                                    AV_TIME_BASE_Q);
3876 3877 3878
        if (ost->st->cur_dts == AV_NOPTS_VALUE)
            av_log(NULL, AV_LOG_DEBUG, "cur_dts is invalid (this is harmless if it occurs once at the start per stream)\n");

3879 3880 3881
        if (!ost->initialized && !ost->inputs_done)
            return ost;

3882
        if (!ost->finished && opts < opts_min) {
3883
            opts_min = opts;
3884
            ost_min  = ost->unavailable ? NULL : ost;
3885
        }
3886
    }
3887
    return ost_min;
3888
}
3889

3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901
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
}

3902 3903 3904 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
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;
3932
        fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
3933
        i = 0;
3934
        set_tty_echo(1);
3935 3936 3937 3938
        while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
            if (k > 0)
                buf[i++] = k;
        buf[i] = 0;
3939 3940
        set_tty_echo(0);
        fprintf(stderr, "\n");
3941 3942 3943 3944 3945 3946 3947 3948 3949 3950
        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);
3951
                        fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
3952
                    } else if (key == 'c') {
3953
                        fprintf(stderr, "Queuing commands only on filters supporting the specific command is unsupported\n");
3954
                        ret = AVERROR_PATCHWELCOME;
3955 3956
                    } else {
                        ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3957
                        if (ret < 0)
3958
                            fprintf(stderr, "Queuing command failed with error %s\n", av_err2str(ret));
3959 3960
                    }
                }
3961
            }
3962 3963 3964 3965
        } else {
            av_log(NULL, AV_LOG_ERROR,
                   "Parse error, at least 3 arguments were expected, "
                   "only %d given in string '%s'\n", n, buf);
3966
        }
3967 3968 3969 3970 3971 3972
    }
    if (key == 'd' || key == 'D'){
        int debug=0;
        if(key == 'D') {
            debug = input_streams[0]->st->codec->debug<<1;
            if(!debug) debug = 1;
3973 3974 3975 3976 3977
            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
3978
                debug += debug;
3979 3980 3981 3982
        }else{
            char buf[32];
            int k = 0;
            i = 0;
3983
            set_tty_echo(1);
3984 3985 3986 3987
            while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
                if (k > 0)
                    buf[i++] = k;
            buf[i] = 0;
3988 3989
            set_tty_echo(0);
            fprintf(stderr, "\n");
3990
            if (k <= 0 || sscanf(buf, "%d", &debug)!=1)
3991
                fprintf(stderr,"error parsing debug value\n");
3992
        }
3993 3994
        for(i=0;i<nb_input_streams;i++) {
            input_streams[i]->st->codec->debug = debug;
3995
        }
3996 3997
        for(i=0;i<nb_output_streams;i++) {
            OutputStream *ost = output_streams[i];
3998
            ost->enc_ctx->debug = debug;
3999 4000 4001
        }
        if(debug) av_log_set_level(AV_LOG_DEBUG);
        fprintf(stderr,"debug=%d\n", debug);
4002
    }
4003 4004 4005 4006 4007
    if (key == '?'){
        fprintf(stderr, "key    function\n"
                        "?      show this help\n"
                        "+      increase verbosity\n"
                        "-      decrease verbosity\n"
4008
                        "c      Send command to first matching filter supporting it\n"
4009
                        "C      Send/Queue command to all matching filters\n"
4010 4011 4012 4013 4014 4015 4016
                        "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;
4017 4018
}

4019
#if HAVE_THREADS
4020
static void *input_thread(void *arg)
4021
{
4022
    InputFile *f = arg;
4023
    unsigned flags = f->non_blocking ? AV_THREAD_MESSAGE_NONBLOCK : 0;
4024
    int ret = 0;
4025

4026
    while (1) {
4027 4028
        AVPacket pkt;
        ret = av_read_frame(f->ctx, &pkt);
4029

4030
        if (ret == AVERROR(EAGAIN)) {
4031
            av_usleep(10000);
4032
            continue;
4033 4034 4035
        }
        if (ret < 0) {
            av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
4036
            break;
4037
        }
4038 4039 4040 4041 4042 4043 4044 4045 4046
        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);
        }
4047 4048 4049 4050 4051
        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));
4052
            av_packet_unref(&pkt);
4053 4054 4055
            av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
            break;
        }
4056 4057
    }

4058
    return NULL;
4059
}
4060

4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076
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);
}

4077
static void free_input_threads(void)
4078
{
4079
    int i;
4080

4081 4082 4083
    for (i = 0; i < nb_input_files; i++)
        free_input_thread(i);
}
4084

4085 4086 4087 4088
static int init_input_thread(int i)
{
    int ret;
    InputFile *f = input_files[i];
4089

4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102
    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));
4103
        av_thread_message_queue_free(&f->in_thread_queue);
4104
        return AVERROR(ret);
4105
    }
4106 4107

    return 0;
4108
}
4109

4110
static int init_input_threads(void)
4111
{
4112
    int i, ret;
4113

4114
    for (i = 0; i < nb_input_files; i++) {
4115
        ret = init_input_thread(i);
4116 4117
        if (ret < 0)
            return ret;
4118 4119 4120 4121
    }
    return 0;
}

4122
static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
4123
{
4124 4125 4126
    return av_thread_message_queue_recv(f->in_thread_queue, pkt,
                                        f->non_blocking ?
                                        AV_THREAD_MESSAGE_NONBLOCK : 0);
4127 4128
}
#endif
4129

4130 4131
static int get_input_packet(InputFile *f, AVPacket *pkt)
{
4132 4133 4134 4135
    if (f->rate_emu) {
        int i;
        for (i = 0; i < f->nb_streams; i++) {
            InputStream *ist = input_streams[f->ist_index + i];
4136
            int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
4137
            int64_t now = av_gettime_relative() - ist->start;
4138 4139 4140 4141 4142
            if (pts > now)
                return AVERROR(EAGAIN);
        }
    }

4143
#if HAVE_THREADS
4144 4145 4146 4147
    if (nb_input_files > 1)
        return get_input_packet_mt(f, pkt);
#endif
    return av_read_frame(f->ctx, pkt);
4148 4149
}

4150 4151 4152
static int got_eagain(void)
{
    int i;
4153 4154
    for (i = 0; i < nb_output_streams; i++)
        if (output_streams[i]->unavailable)
4155 4156 4157 4158 4159 4160 4161 4162 4163
            return 1;
    return 0;
}

static void reset_eagain(void)
{
    int i;
    for (i = 0; i < nb_input_files; i++)
        input_files[i]->eagain = 0;
4164 4165 4166 4167
    for (i = 0; i < nb_output_streams; i++)
        output_streams[i]->unavailable = 0;
}

4168 4169
// 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,
4170
                               AVRational time_base)
4171 4172 4173 4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218
{
    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;

    ret = av_seek_frame(is, -1, is->start_time, 0);
    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);
4219
            } else {
4220
                continue;
4221
            }
4222 4223
        } else {
            if (ist->framerate.num) {
4224
                duration = av_rescale_q(1, av_inv_q(ist->framerate), ist->st->time_base);
4225
            } else if (ist->st->avg_frame_rate.num) {
4226
                duration = av_rescale_q(1, av_inv_q(ist->st->avg_frame_rate), ist->st->time_base);
4227 4228 4229
            } else {
                duration = 1;
            }
4230 4231 4232 4233 4234 4235 4236 4237 4238 4239
        }
        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);
    }

4240 4241
    if (ifile->loop > 0)
        ifile->loop--;
4242 4243 4244 4245

    return ret;
}

4246 4247
/*
 * Return
4248 4249 4250 4251 4252
 * - 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
 */
4253
static int process_input(int file_index)
4254
{
4255
    InputFile *ifile = input_files[file_index];
4256 4257 4258
    AVFormatContext *is;
    InputStream *ist;
    AVPacket pkt;
4259
    int ret, thread_ret, i, j;
4260
    int64_t duration;
4261
    int64_t pkt_dts;
4262 4263 4264 4265 4266 4267 4268 4269

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

    if (ret == AVERROR(EAGAIN)) {
        ifile->eagain = 1;
        return ret;
    }
4270
    if (ret < 0 && ifile->loop) {
4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281
        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);
            }
        }
4282 4283 4284
#if HAVE_THREADS
        free_input_thread(file_index);
#endif
James Almer's avatar
James Almer committed
4285
        ret = seek_to_start(ifile, is);
4286 4287 4288 4289 4290
#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
4291 4292 4293 4294
        if (ret < 0)
            av_log(NULL, AV_LOG_WARNING, "Seek to start failed.\n");
        else
            ret = get_input_packet(ifile, &pkt);
4295 4296 4297 4298
        if (ret == AVERROR(EAGAIN)) {
            ifile->eagain = 1;
            return ret;
        }
4299
    }
4300 4301
    if (ret < 0) {
        if (ret != AVERROR_EOF) {
4302
            print_error(is->url, ret);
4303
            if (exit_on_error)
4304
                exit_program(1);
4305 4306 4307 4308
        }

        for (i = 0; i < ifile->nb_streams; i++) {
            ist = input_streams[ifile->ist_index + i];
4309
            if (ist->decoding_needed) {
4310
                ret = process_input_packet(ist, NULL, 0);
4311 4312 4313
                if (ret>0)
                    return 0;
            }
4314

4315 4316 4317
            /* mark all outputs that don't go through lavfi as finished */
            for (j = 0; j < nb_output_streams; j++) {
                OutputStream *ost = output_streams[j];
4318

4319 4320
                if (ost->source_index == ifile->ist_index + i &&
                    (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
4321
                    finish_output_stream(ost);
4322 4323 4324
            }
        }

4325
        ifile->eof_reached = 1;
4326
        return AVERROR(EAGAIN);
4327 4328 4329 4330 4331
    }

    reset_eagain();

    if (do_pkt_dump) {
4332
        av_pkt_dump_log2(NULL, AV_LOG_INFO, &pkt, do_hex_dump,
4333 4334 4335 4336 4337 4338 4339 4340 4341 4342
                         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];
4343 4344

    ist->data_size += pkt.size;
4345
    ist->nb_packets++;
4346

4347 4348 4349
    if (ist->discard)
        goto discard_packet;

4350 4351 4352 4353 4354
    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);
4355 4356
    }

4357 4358
    if (debug_ts) {
        av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
4359
               "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",
4360
               ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->dec_ctx->codec_type),
4361 4362 4363 4364 4365 4366
               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));
4367 4368
    }

4369
    if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
4370
        int64_t stime, stime2;
4371 4372 4373 4374 4375 4376 4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389
        // 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;
            }
        }

4390 4391
        stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
        stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
4392
        ist->wrap_correction_done = 1;
4393 4394 4395

        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;
4396 4397
            ist->wrap_correction_done = 0;
        }
4398 4399
        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;
4400 4401 4402 4403
            ist->wrap_correction_done = 0;
        }
    }

4404
    /* add the stream-global side data to the first packet */
4405
    if (ist->nb_packets == 1) {
4406 4407 4408 4409
        for (i = 0; i < ist->st->nb_side_data; i++) {
            AVPacketSideData *src_sd = &ist->st->side_data[i];
            uint8_t *dst_data;

4410
            if (src_sd->type == AV_PKT_DATA_DISPLAYMATRIX)
4411
                continue;
4412 4413

            if (av_packet_get_side_data(&pkt, src_sd->type, NULL))
4414
                continue;
4415 4416 4417 4418 4419 4420 4421

            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);
        }
4422
    }
4423

4424 4425 4426 4427 4428 4429 4430 4431 4432 4433
    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;

4434
    pkt_dts = av_rescale_q_rnd(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q, AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
4435 4436
    if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
         ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
4437
        pkt_dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
4438 4439
        && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
        int64_t delta   = pkt_dts - ifile->last_ts;
4440 4441
        if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
            delta >  1LL*dts_delta_threshold*AV_TIME_BASE){
4442 4443 4444 4445 4446 4447 4448 4449 4450
            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);
        }
    }
4451

4452 4453 4454 4455 4456 4457 4458 4459 4460
    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;
4461

4462
    pkt_dts = av_rescale_q_rnd(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q, AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
4463 4464
    if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
         ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
4465
         pkt_dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
4466 4467 4468
        !copy_ts) {
        int64_t delta   = pkt_dts - ist->next_dts;
        if (is->iformat->flags & AVFMT_TS_DISCONT) {
4469
            if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
4470
                delta >  1LL*dts_delta_threshold*AV_TIME_BASE ||
4471 4472 4473
                pkt_dts + AV_TIME_BASE/10 < FFMAX(ist->pts, ist->dts)) {
                ifile->ts_offset -= delta;
                av_log(NULL, AV_LOG_DEBUG,
4474 4475 4476 4477
                       "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),
4478 4479 4480 4481 4482
                       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);
            }
4483 4484
        } else {
            if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
4485
                 delta >  1LL*dts_error_threshold*AV_TIME_BASE) {
4486 4487 4488 4489 4490 4491 4492
                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 ||
4493
                     delta >  1LL*dts_error_threshold*AV_TIME_BASE) {
4494 4495 4496 4497 4498 4499 4500
                    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;
                }
            }
        }
    }

4501 4502 4503
    if (pkt.dts != AV_NOPTS_VALUE)
        ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);

4504
    if (debug_ts) {
4505
        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",
4506
               ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->dec_ctx->codec_type),
4507 4508 4509 4510
               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));
4511 4512
    }

4513 4514
    sub2video_heartbeat(ist, pkt.pts);

4515
    process_input_packet(ist, &pkt, 0);
4516 4517

discard_packet:
4518
    av_packet_unref(&pkt);
4519 4520 4521 4522

    return 0;
}

4523 4524 4525 4526 4527 4528 4529 4530 4531 4532 4533 4534 4535 4536 4537 4538 4539
/**
 * 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)
4540
        return reap_filters(0);
4541 4542

    if (ret == AVERROR_EOF) {
4543
        ret = reap_filters(1);
4544 4545 4546 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
        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;
4579
    InputStream  *ist = NULL;
4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592
    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;
    }

4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603
    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) {
4604 4605 4606 4607 4608 4609 4610 4611 4612
        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);
            }
        }
4613 4614 4615 4616
        if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
            return ret;
        if (!ist)
            return 0;
4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629
    } 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;
        }
4630 4631 4632 4633 4634 4635 4636 4637 4638 4639 4640
    } 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;
    }
4641

4642 4643 4644
    if (ret < 0)
        return ret == AVERROR_EOF ? 0 : ret;

4645
    return reap_filters(0);
4646 4647
}

4648 4649 4650
/*
 * The following code is the main loop of the file converter
 */
4651
static int transcode(void)
4652
{
4653
    int ret, i;
4654
    AVFormatContext *os;
4655
    OutputStream *ost;
4656 4657
    InputStream *ist;
    int64_t timer_start;
4658
    int64_t total_packets_written = 0;
Fabrice Bellard's avatar
Fabrice Bellard committed
4659

4660
    ret = transcode_init();
4661 4662 4663
    if (ret < 0)
        goto fail;

4664 4665
    if (stdin_interaction) {
        av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
4666 4667
    }

4668
    timer_start = av_gettime_relative();
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4669

4670
#if HAVE_THREADS
4671 4672 4673
    if ((ret = init_input_threads()) < 0)
        goto fail;
#endif
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4674

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Anton Khirnov committed
4675
    while (!received_sigterm) {
4676
        int64_t cur_time= av_gettime_relative();
4677

4678 4679 4680 4681
        /* if 'q' pressed, exits */
        if (stdin_interaction)
            if (check_keyboard_interaction(cur_time) < 0)
                break;
4682

4683
        /* check if there's any stream where output is still needed */
4684 4685
        if (!need_output()) {
            av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
4686
            break;
4687
        }
4688

4689
        ret = transcode_step();
4690
        if (ret < 0 && ret != AVERROR_EOF) {
4691
            av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", av_err2str(ret));
4692
            break;
4693
        }
4694 4695

        /* dump report by using the output first video and audio streams */
4696
        print_report(0, timer_start, cur_time);
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4697
    }
4698
#if HAVE_THREADS
4699 4700
    free_input_threads();
#endif
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4701

4702 4703
    /* at the end of stream, we must flush the decoder buffers */
    for (i = 0; i < nb_input_streams; i++) {
4704
        ist = input_streams[i];
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James Almer committed
4705
        if (!input_files[ist->file_index]->eof_reached) {
4706
            process_input_packet(ist, NULL, 0);
4707
        }
4708
    }
4709
    flush_encoders();
4710

4711
    term_exit();
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Fabrice Bellard committed
4712

4713
    /* write the trailer if needed and close file */
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Aneesh Dogra committed
4714
    for (i = 0; i < nb_output_files; i++) {
4715
        os = output_files[i]->ctx;
4716 4717 4718 4719
        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",
4720
                   i, os->url);
4721 4722
            continue;
        }
4723
        if ((ret = av_write_trailer(os)) < 0) {
4724
            av_log(NULL, AV_LOG_ERROR, "Error writing trailer of %s: %s\n", os->url, av_err2str(ret));
4725 4726
            if (exit_on_error)
                exit_program(1);
4727
        }
4728
    }
4729

4730
    /* dump report by using the first video and audio streams */
4731
    print_report(1, timer_start, av_gettime_relative());
4732

4733
    /* close each encoder */
4734
    for (i = 0; i < nb_output_streams; i++) {
4735
        ost = output_streams[i];
4736
        if (ost->encoding_needed) {
4737
            av_freep(&ost->enc_ctx->stats_in);
4738
        }
4739 4740 4741 4742 4743 4744
        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);
4745 4746
    }

4747 4748
    /* close each decoder */
    for (i = 0; i < nb_input_streams; i++) {
4749
        ist = input_streams[i];
4750
        if (ist->decoding_needed) {
4751
            avcodec_close(ist->dec_ctx);
4752
            if (ist->hwaccel_uninit)
4753
                ist->hwaccel_uninit(ist->dec_ctx);
4754 4755
        }
    }
4756

4757
    av_buffer_unref(&hw_device_ctx);
4758
    hw_device_free_all();
4759

4760 4761 4762 4763
    /* finished ! */
    ret = 0;

 fail:
4764
#if HAVE_THREADS
4765 4766
    free_input_threads();
#endif
4767

4768 4769
    if (output_streams) {
        for (i = 0; i < nb_output_streams; i++) {
4770
            ost = output_streams[i];
4771 4772
            if (ost) {
                if (ost->logfile) {
4773 4774 4775 4776
                    if (fclose(ost->logfile))
                        av_log(NULL, AV_LOG_ERROR,
                               "Error closing logfile, loss of information possible: %s\n",
                               av_err2str(AVERROR(errno)));
4777
                    ost->logfile = NULL;
4778
                }
4779
                av_freep(&ost->forced_kf_pts);
4780
                av_freep(&ost->apad);
4781
                av_freep(&ost->disposition);
4782
                av_dict_free(&ost->encoder_opts);
4783
                av_dict_free(&ost->sws_dict);
4784
                av_dict_free(&ost->swr_opts);
4785
                av_dict_free(&ost->resample_opts);
4786 4787 4788
            }
        }
    }
4789
    return ret;
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Fabrice Bellard committed
4790 4791
}

4792
static BenchmarkTimeStamps get_benchmark_time_stamps(void)
4793
{
4794
    BenchmarkTimeStamps time_stamps = { av_gettime_relative() };
4795 4796
#if HAVE_GETRUSAGE
    struct rusage rusage;
4797

4798
    getrusage(RUSAGE_SELF, &rusage);
4799 4800 4801 4802
    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;
4803 4804 4805 4806 4807
#elif HAVE_GETPROCESSTIMES
    HANDLE proc;
    FILETIME c, e, k, u;
    proc = GetCurrentProcess();
    GetProcessTimes(proc, &c, &e, &k, &u);
4808 4809 4810 4811
    time_stamps.user_usec =
        ((int64_t)u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
    time_stamps.sys_usec =
        ((int64_t)k.dwHighDateTime << 32 | k.dwLowDateTime) / 10;
4812
#else
4813
    time_stamps.user_usec = time_stamps.sys_usec = 0;
4814
#endif
4815
    return time_stamps;
4816
}
4817

4818 4819 4820 4821 4822 4823 4824 4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835
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
}

4836
static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
4837 4838 4839
{
}

4840 4841
int main(int argc, char **argv)
{
4842
    int i, ret;
4843
    BenchmarkTimeStamps ti;
4844

4845 4846
    init_dynload();

4847
    register_exit(ffmpeg_cleanup);
4848

4849 4850
    setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */

4851
    av_log_set_flags(AV_LOG_SKIP_REPEATED);
4852
    parse_loglevel(argc, argv, options);
4853

4854
    if(argc>1 && !strcmp(argv[1], "-d")){
4855
        run_as_daemon=1;
4856 4857 4858 4859 4860
        av_log_set_callback(log_callback_null);
        argc--;
        argv++;
    }

4861
#if CONFIG_AVDEVICE
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Luca Abeni committed
4862
    avdevice_register_all();
4863
#endif
4864
    avformat_network_init();
4865

4866
    show_banner(argc, argv, options);
4867

4868
    /* parse options and open all input/output files */
4869
    ret = ffmpeg_parse_options(argc, argv);
4870
    if (ret < 0)
4871
        exit_program(1);
4872

4873
    if (nb_output_files <= 0 && nb_input_files == 0) {
4874
        show_usage();
4875
        av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
4876
        exit_program(1);
4877
    }
4878

4879 4880
    /* file converter / grab */
    if (nb_output_files <= 0) {
4881
        av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
4882
        exit_program(1);
4883 4884
    }

4885 4886 4887 4888 4889
    for (i = 0; i < nb_output_files; i++) {
        if (strcmp(output_files[i]->ctx->oformat->name, "rtp"))
            want_sdp = 0;
    }

4890
    current_time = ti = get_benchmark_time_stamps();
4891
    if (transcode() < 0)
4892
        exit_program(1);
4893
    if (do_benchmark) {
4894
        int64_t utime, stime, rtime;
4895
        current_time = get_benchmark_time_stamps();
4896 4897 4898
        utime = current_time.user_usec - ti.user_usec;
        stime = current_time.sys_usec  - ti.sys_usec;
        rtime = current_time.real_usec - ti.real_usec;
4899 4900 4901
        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);
4902
    }
4903 4904
    av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
           decode_error_stat[0], decode_error_stat[1]);
4905
    if ((decode_error_stat[0] + decode_error_stat[1]) * max_error_rate < decode_error_stat[1])
4906
        exit_program(69);
4907

4908 4909
    exit_program(received_nb_signals ? 255 : main_return_code);
    return main_return_code;
4910
}