cmdutils.c 62.1 KB
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/*
 * Various utilities for command line tools
 * Copyright (c) 2000-2003 Fabrice Bellard
 *
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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
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * 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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#include <string.h>
#include <stdlib.h>
#include <errno.h>
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#include <math.h>
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/* Include only the enabled headers since some compilers (namely, Sun
   Studio) will not omit unused inline functions and create undefined
   references to libraries that are not being built. */

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#include "config.h"
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#include "compat/va_copy.h"
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#include "libavformat/avformat.h"
#include "libavfilter/avfilter.h"
#include "libavdevice/avdevice.h"
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#include "libavresample/avresample.h"
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#include "libswscale/swscale.h"
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#include "libswresample/swresample.h"
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#include "libpostproc/postprocess.h"
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#include "libavutil/avassert.h"
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#include "libavutil/avstring.h"
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#include "libavutil/bprint.h"
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#include "libavutil/mathematics.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/parseutils.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/eval.h"
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#include "libavutil/dict.h"
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#include "libavutil/opt.h"
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#include "cmdutils.h"
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#include "version.h"
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#if CONFIG_NETWORK
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#include "libavformat/network.h"
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#endif
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#if HAVE_SYS_RESOURCE_H
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#include <sys/time.h>
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#include <sys/resource.h>
#endif
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#if CONFIG_OPENCL
#include "libavutil/opencl.h"
#endif

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static int init_report(const char *env);

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struct SwsContext *sws_opts;
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AVDictionary *swr_opts;
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AVDictionary *format_opts, *codec_opts, *resample_opts;
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const int this_year = 2013;
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static FILE *report_file;

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void init_opts(void)
{
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    if(CONFIG_SWSCALE)
        sws_opts = sws_getContext(16, 16, 0, 16, 16, 0, SWS_BICUBIC,
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                              NULL, NULL, NULL);
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}

void uninit_opts(void)
{
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#if CONFIG_SWSCALE
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    sws_freeContext(sws_opts);
    sws_opts = NULL;
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#endif
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    av_dict_free(&swr_opts);
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    av_dict_free(&format_opts);
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    av_dict_free(&codec_opts);
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    av_dict_free(&resample_opts);
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}

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void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
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{
    vfprintf(stdout, fmt, vl);
}

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static void log_callback_report(void *ptr, int level, const char *fmt, va_list vl)
{
    va_list vl2;
    char line[1024];
    static int print_prefix = 1;

    va_copy(vl2, vl);
    av_log_default_callback(ptr, level, fmt, vl);
    av_log_format_line(ptr, level, fmt, vl2, line, sizeof(line), &print_prefix);
    va_end(vl2);
    fputs(line, report_file);
    fflush(report_file);
}

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static void (*program_exit)(int ret);

void register_exit(void (*cb)(int ret))
{
    program_exit = cb;
}

void exit_program(int ret)
{
    if (program_exit)
        program_exit(ret);

    exit(ret);
}

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double parse_number_or_die(const char *context, const char *numstr, int type,
                           double min, double max)
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{
    char *tail;
    const char *error;
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    double d = av_strtod(numstr, &tail);
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    if (*tail)
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        error = "Expected number for %s but found: %s\n";
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    else if (d < min || d > max)
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        error = "The value for %s was %s which is not within %f - %f\n";
    else if (type == OPT_INT64 && (int64_t)d != d)
        error = "Expected int64 for %s but found %s\n";
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    else if (type == OPT_INT && (int)d != d)
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        error = "Expected int for %s but found %s\n";
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    else
        return d;
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    av_log(NULL, AV_LOG_FATAL, error, context, numstr, min, max);
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    exit_program(1);
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    return 0;
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}

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int64_t parse_time_or_die(const char *context, const char *timestr,
                          int is_duration)
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{
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    int64_t us;
    if (av_parse_time(&us, timestr, is_duration) < 0) {
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        av_log(NULL, AV_LOG_FATAL, "Invalid %s specification for %s: %s\n",
               is_duration ? "duration" : "date", context, timestr);
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        exit_program(1);
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    }
    return us;
}

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void show_help_options(const OptionDef *options, const char *msg, int req_flags,
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                       int rej_flags, int alt_flags)
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{
    const OptionDef *po;
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    int first;
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    first = 1;
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    for (po = options; po->name != NULL; po++) {
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        char buf[64];
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        if (((po->flags & req_flags) != req_flags) ||
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            (alt_flags && !(po->flags & alt_flags)) ||
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            (po->flags & rej_flags))
            continue;

        if (first) {
            printf("%s\n", msg);
            first = 0;
        }
        av_strlcpy(buf, po->name, sizeof(buf));
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        if (po->argname) {
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            av_strlcat(buf, " ", sizeof(buf));
            av_strlcat(buf, po->argname, sizeof(buf));
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        }
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        printf("-%-17s  %s\n", buf, po->help);
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    }
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    printf("\n");
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}

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void show_help_children(const AVClass *class, int flags)
{
    const AVClass *child = NULL;
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    if (class->option) {
        av_opt_show2(&class, NULL, flags, 0);
        printf("\n");
    }
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    while (child = av_opt_child_class_next(class, child))
        show_help_children(child, flags);
}

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static const OptionDef *find_option(const OptionDef *po, const char *name)
{
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    const char *p = strchr(name, ':');
    int len = p ? p - name : strlen(name);

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    while (po->name != NULL) {
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        if (!strncmp(name, po->name, len) && strlen(po->name) == len)
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            break;
        po++;
    }
    return po;
}

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/* _WIN32 means using the windows libc - cygwin doesn't define that
 * by default. HAVE_COMMANDLINETOARGVW is true on cygwin, while
 * it doesn't provide the actual command line via GetCommandLineW(). */
#if HAVE_COMMANDLINETOARGVW && defined(_WIN32)
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#include <windows.h>
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#include <shellapi.h>
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/* Will be leaked on exit */
static char** win32_argv_utf8 = NULL;
static int win32_argc = 0;

/**
 * Prepare command line arguments for executable.
 * For Windows - perform wide-char to UTF-8 conversion.
 * Input arguments should be main() function arguments.
 * @param argc_ptr Arguments number (including executable)
 * @param argv_ptr Arguments list.
 */
static void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
{
    char *argstr_flat;
    wchar_t **argv_w;
    int i, buffsize = 0, offset = 0;

    if (win32_argv_utf8) {
        *argc_ptr = win32_argc;
        *argv_ptr = win32_argv_utf8;
        return;
    }

    win32_argc = 0;
    argv_w = CommandLineToArgvW(GetCommandLineW(), &win32_argc);
    if (win32_argc <= 0 || !argv_w)
        return;

    /* determine the UTF-8 buffer size (including NULL-termination symbols) */
    for (i = 0; i < win32_argc; i++)
        buffsize += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
                                        NULL, 0, NULL, NULL);

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    win32_argv_utf8 = av_mallocz(sizeof(char *) * (win32_argc + 1) + buffsize);
    argstr_flat     = (char *)win32_argv_utf8 + sizeof(char *) * (win32_argc + 1);
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    if (win32_argv_utf8 == NULL) {
        LocalFree(argv_w);
        return;
    }

    for (i = 0; i < win32_argc; i++) {
        win32_argv_utf8[i] = &argstr_flat[offset];
        offset += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
                                      &argstr_flat[offset],
                                      buffsize - offset, NULL, NULL);
    }
    win32_argv_utf8[i] = NULL;
    LocalFree(argv_w);

    *argc_ptr = win32_argc;
    *argv_ptr = win32_argv_utf8;
}
#else
static inline void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
{
    /* nothing to do */
}
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#endif /* HAVE_COMMANDLINETOARGVW */
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static int write_option(void *optctx, const OptionDef *po, const char *opt,
                        const char *arg)
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{
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    /* new-style options contain an offset into optctx, old-style address of
     * a global var*/
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    void *dst = po->flags & (OPT_OFFSET | OPT_SPEC) ?
                (uint8_t *)optctx + po->u.off : po->u.dst_ptr;
    int *dstcount;
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    if (po->flags & OPT_SPEC) {
        SpecifierOpt **so = dst;
        char *p = strchr(opt, ':');

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        dstcount = (int *)(so + 1);
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        *so = grow_array(*so, sizeof(**so), dstcount, *dstcount + 1);
        (*so)[*dstcount - 1].specifier = av_strdup(p ? p + 1 : "");
        dst = &(*so)[*dstcount - 1].u;
    }
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    if (po->flags & OPT_STRING) {
        char *str;
        str = av_strdup(arg);
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        av_freep(dst);
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        *(char **)dst = str;
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    } else if (po->flags & OPT_BOOL || po->flags & OPT_INT) {
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        *(int *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
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    } else if (po->flags & OPT_INT64) {
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        *(int64_t *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT64_MIN, INT64_MAX);
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    } else if (po->flags & OPT_TIME) {
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        *(int64_t *)dst = parse_time_or_die(opt, arg, 1);
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    } else if (po->flags & OPT_FLOAT) {
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        *(float *)dst = parse_number_or_die(opt, arg, OPT_FLOAT, -INFINITY, INFINITY);
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    } else if (po->flags & OPT_DOUBLE) {
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        *(double *)dst = parse_number_or_die(opt, arg, OPT_DOUBLE, -INFINITY, INFINITY);
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    } else if (po->u.func_arg) {
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        int ret = po->u.func_arg(optctx, opt, arg);
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        if (ret < 0) {
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            av_log(NULL, AV_LOG_ERROR,
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                   "Failed to set value '%s' for option '%s': %s\n",
                   arg, opt, av_err2str(ret));
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            return ret;
        }
    }
    if (po->flags & OPT_EXIT)
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        exit_program(0);
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    return 0;
}

int parse_option(void *optctx, const char *opt, const char *arg,
                 const OptionDef *options)
{
    const OptionDef *po;
    int ret;

    po = find_option(options, opt);
    if (!po->name && opt[0] == 'n' && opt[1] == 'o') {
        /* handle 'no' bool option */
        po = find_option(options, opt + 2);
        if ((po->name && (po->flags & OPT_BOOL)))
            arg = "0";
    } else if (po->flags & OPT_BOOL)
        arg = "1";

    if (!po->name)
        po = find_option(options, "default");
    if (!po->name) {
        av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'\n", opt);
        return AVERROR(EINVAL);
    }
    if (po->flags & HAS_ARG && !arg) {
        av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'\n", opt);
        return AVERROR(EINVAL);
    }

    ret = write_option(optctx, po, opt, arg);
    if (ret < 0)
        return ret;

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    return !!(po->flags & HAS_ARG);
}

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void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
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                   void (*parse_arg_function)(void *, const char*))
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{
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    const char *opt;
    int optindex, handleoptions = 1, ret;
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    /* perform system-dependent conversions for arguments list */
    prepare_app_arguments(&argc, &argv);

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    /* parse options */
    optindex = 1;
    while (optindex < argc) {
        opt = argv[optindex++];
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        if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
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            if (opt[1] == '-' && opt[2] == '\0') {
                handleoptions = 0;
                continue;
            }
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            opt++;
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            if ((ret = parse_option(optctx, opt, argv[optindex], options)) < 0)
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                exit_program(1);
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            optindex += ret;
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        } else {
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            if (parse_arg_function)
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                parse_arg_function(optctx, opt);
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        }
    }
}

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int parse_optgroup(void *optctx, OptionGroup *g)
{
    int i, ret;

    av_log(NULL, AV_LOG_DEBUG, "Parsing a group of options: %s %s.\n",
           g->group_def->name, g->arg);

    for (i = 0; i < g->nb_opts; i++) {
        Option *o = &g->opts[i];

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        if (g->group_def->flags &&
            !(g->group_def->flags & o->opt->flags)) {
            av_log(NULL, AV_LOG_ERROR, "Option %s (%s) cannot be applied to "
                   "%s %s -- you are trying to apply an input option to an "
                   "output file or vice versa. Move this option before the "
                   "file it belongs to.\n", o->key, o->opt->help,
                   g->group_def->name, g->arg);
            return AVERROR(EINVAL);
        }

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        av_log(NULL, AV_LOG_DEBUG, "Applying option %s (%s) with argument %s.\n",
               o->key, o->opt->help, o->val);

        ret = write_option(optctx, o->opt, o->key, o->val);
        if (ret < 0)
            return ret;
    }

    av_log(NULL, AV_LOG_DEBUG, "Successfully parsed a group of options.\n");

    return 0;
}

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int locate_option(int argc, char **argv, const OptionDef *options,
                  const char *optname)
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{
    const OptionDef *po;
    int i;

    for (i = 1; i < argc; i++) {
        const char *cur_opt = argv[i];

        if (*cur_opt++ != '-')
            continue;

        po = find_option(options, cur_opt);
        if (!po->name && cur_opt[0] == 'n' && cur_opt[1] == 'o')
            po = find_option(options, cur_opt + 2);

        if ((!po->name && !strcmp(cur_opt, optname)) ||
             (po->name && !strcmp(optname, po->name)))
            return i;

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        if (po->flags & HAS_ARG)
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            i++;
    }
    return 0;
}

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static void dump_argument(const char *a)
{
    const unsigned char *p;

    for (p = a; *p; p++)
        if (!((*p >= '+' && *p <= ':') || (*p >= '@' && *p <= 'Z') ||
              *p == '_' || (*p >= 'a' && *p <= 'z')))
            break;
    if (!*p) {
        fputs(a, report_file);
        return;
    }
    fputc('"', report_file);
    for (p = a; *p; p++) {
        if (*p == '\\' || *p == '"' || *p == '$' || *p == '`')
            fprintf(report_file, "\\%c", *p);
        else if (*p < ' ' || *p > '~')
            fprintf(report_file, "\\x%02x", *p);
        else
            fputc(*p, report_file);
    }
    fputc('"', report_file);
}

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void parse_loglevel(int argc, char **argv, const OptionDef *options)
{
    int idx = locate_option(argc, argv, options, "loglevel");
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    const char *env;
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    if (!idx)
        idx = locate_option(argc, argv, options, "v");
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    if (idx && argv[idx + 1])
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        opt_loglevel(NULL, "loglevel", argv[idx + 1]);
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    idx = locate_option(argc, argv, options, "report");
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    if ((env = getenv("FFREPORT")) || idx) {
        init_report(env);
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        if (report_file) {
            int i;
            fprintf(report_file, "Command line:\n");
            for (i = 0; i < argc; i++) {
                dump_argument(argv[i]);
                fputc(i < argc - 1 ? ' ' : '\n', report_file);
            }
            fflush(report_file);
        }
    }
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}

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static const AVOption *opt_find(void *obj, const char *name, const char *unit,
                            int opt_flags, int search_flags)
{
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    const AVOption *o = av_opt_find(obj, name, unit, opt_flags, search_flags);
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    if(o && !o->flags)
        return NULL;
    return o;
}

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#define FLAGS (o->type == AV_OPT_TYPE_FLAGS) ? AV_DICT_APPEND : 0
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int opt_default(void *optctx, const char *opt, const char *arg)
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{
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    const AVOption *o;
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    int consumed = 0;
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    char opt_stripped[128];
    const char *p;
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    const AVClass *cc = avcodec_get_class(), *fc = avformat_get_class();
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#if CONFIG_AVRESAMPLE
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    const AVClass *rc = avresample_get_class();
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#endif
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    const AVClass *sc, *swr_class;
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    if (!strcmp(opt, "debug") || !strcmp(opt, "fdebug"))
        av_log_set_level(AV_LOG_DEBUG);

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    if (!(p = strchr(opt, ':')))
        p = opt + strlen(opt);
    av_strlcpy(opt_stripped, opt, FFMIN(sizeof(opt_stripped), p - opt + 1));

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    if ((o = opt_find(&cc, opt_stripped, NULL, 0,
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                         AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)) ||
        ((opt[0] == 'v' || opt[0] == 'a' || opt[0] == 's') &&
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         (o = opt_find(&cc, opt + 1, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ)))) {
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        av_dict_set(&codec_opts, opt, arg, FLAGS);
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        consumed = 1;
    }
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    if ((o = opt_find(&fc, opt, NULL, 0,
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                         AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
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        av_dict_set(&format_opts, opt, arg, FLAGS);
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        if (consumed)
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            av_log(NULL, AV_LOG_VERBOSE, "Routing option %s to both codec and muxer layer\n", opt);
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        consumed = 1;
    }
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#if CONFIG_SWSCALE
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    sc = sws_get_class();
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    if (!consumed && opt_find(&sc, opt, NULL, 0,
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                         AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)) {
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        // XXX we only support sws_flags, not arbitrary sws options
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        int ret = av_opt_set(sws_opts, opt, arg, 0);
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        if (ret < 0) {
            av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
            return ret;
        }
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        consumed = 1;
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    }
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#endif
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#if CONFIG_SWRESAMPLE
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    swr_class = swr_get_class();
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    if (!consumed && (o=opt_find(&swr_class, opt, NULL, 0,
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                                    AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
        struct SwrContext *swr = swr_alloc();
        int ret = av_opt_set(swr, opt, arg, 0);
        swr_free(&swr);
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        if (ret < 0) {
            av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
            return ret;
        }
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        av_dict_set(&swr_opts, opt, arg, FLAGS);
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        consumed = 1;
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    }
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#endif
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#if CONFIG_AVRESAMPLE
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    if ((o=opt_find(&rc, opt, NULL, 0,
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                       AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
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        av_dict_set(&resample_opts, opt, arg, FLAGS);
        consumed = 1;
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    }
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#endif
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    if (consumed)
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        return 0;
    return AVERROR_OPTION_NOT_FOUND;
}
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/*
 * Check whether given option is a group separator.
 *
 * @return index of the group definition that matched or -1 if none
 */
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static int match_group_separator(const OptionGroupDef *groups, int nb_groups,
                                 const char *opt)
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{
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    int i;
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    for (i = 0; i < nb_groups; i++) {
        const OptionGroupDef *p = &groups[i];
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        if (p->sep && !strcmp(p->sep, opt))
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            return i;
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    }

    return -1;
}

/*
 * Finish parsing an option group.
 *
 * @param group_idx which group definition should this group belong to
 * @param arg argument of the group delimiting option
 */
static void finish_group(OptionParseContext *octx, int group_idx,
                         const char *arg)
{
    OptionGroupList *l = &octx->groups[group_idx];
    OptionGroup *g;

    GROW_ARRAY(l->groups, l->nb_groups);
    g = &l->groups[l->nb_groups - 1];

    *g             = octx->cur_group;
    g->arg         = arg;
    g->group_def   = l->group_def;
#if CONFIG_SWSCALE
    g->sws_opts    = sws_opts;
#endif
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    g->swr_opts    = swr_opts;
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    g->codec_opts  = codec_opts;
    g->format_opts = format_opts;
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    g->resample_opts = resample_opts;
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    codec_opts  = NULL;
    format_opts = NULL;
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    resample_opts = NULL;
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#if CONFIG_SWSCALE
    sws_opts    = NULL;
#endif
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    swr_opts    = NULL;
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    init_opts();

    memset(&octx->cur_group, 0, sizeof(octx->cur_group));
}

/*
 * Add an option instance to currently parsed group.
 */
static void add_opt(OptionParseContext *octx, const OptionDef *opt,
                    const char *key, const char *val)
{
    int global = !(opt->flags & (OPT_PERFILE | OPT_SPEC | OPT_OFFSET));
    OptionGroup *g = global ? &octx->global_opts : &octx->cur_group;

    GROW_ARRAY(g->opts, g->nb_opts);
    g->opts[g->nb_opts - 1].opt = opt;
    g->opts[g->nb_opts - 1].key = key;
    g->opts[g->nb_opts - 1].val = val;
}

static void init_parse_context(OptionParseContext *octx,
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                               const OptionGroupDef *groups, int nb_groups)
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{
    static const OptionGroupDef global_group = { "global" };
    int i;

    memset(octx, 0, sizeof(*octx));

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    octx->nb_groups = nb_groups;
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    octx->groups    = av_mallocz(sizeof(*octx->groups) * octx->nb_groups);
    if (!octx->groups)
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        exit_program(1);
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    for (i = 0; i < octx->nb_groups; i++)
        octx->groups[i].group_def = &groups[i];

    octx->global_opts.group_def = &global_group;
    octx->global_opts.arg       = "";

    init_opts();
}

void uninit_parse_context(OptionParseContext *octx)
{
    int i, j;

    for (i = 0; i < octx->nb_groups; i++) {
        OptionGroupList *l = &octx->groups[i];

        for (j = 0; j < l->nb_groups; j++) {
            av_freep(&l->groups[j].opts);
            av_dict_free(&l->groups[j].codec_opts);
            av_dict_free(&l->groups[j].format_opts);
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            av_dict_free(&l->groups[j].resample_opts);
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#if CONFIG_SWSCALE
            sws_freeContext(l->groups[j].sws_opts);
#endif
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            av_dict_free(&l->groups[j].swr_opts);
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        }
        av_freep(&l->groups);
    }
    av_freep(&octx->groups);

    av_freep(&octx->cur_group.opts);
    av_freep(&octx->global_opts.opts);

    uninit_opts();
}

int split_commandline(OptionParseContext *octx, int argc, char *argv[],
                      const OptionDef *options,
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                      const OptionGroupDef *groups, int nb_groups)
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{
    int optindex = 1;
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    int dashdash = -2;
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    /* perform system-dependent conversions for arguments list */
    prepare_app_arguments(&argc, &argv);

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    init_parse_context(octx, groups, nb_groups);
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    av_log(NULL, AV_LOG_DEBUG, "Splitting the commandline.\n");

    while (optindex < argc) {
        const char *opt = argv[optindex++], *arg;
        const OptionDef *po;
        int ret;

        av_log(NULL, AV_LOG_DEBUG, "Reading option '%s' ...", opt);

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        if (opt[0] == '-' && opt[1] == '-' && !opt[2]) {
            dashdash = optindex;
            continue;
        }
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        /* unnamed group separators, e.g. output filename */
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        if (opt[0] != '-' || !opt[1] || dashdash+1 == optindex) {
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            finish_group(octx, 0, opt);
            av_log(NULL, AV_LOG_DEBUG, " matched as %s.\n", groups[0].name);
            continue;
        }
        opt++;

#define GET_ARG(arg)                                                           \
do {                                                                           \
    arg = argv[optindex++];                                                    \
    if (!arg) {                                                                \
        av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'.\n", opt);\
        return AVERROR(EINVAL);                                                \
    }                                                                          \
} while (0)

        /* named group separators, e.g. -i */
747
        if ((ret = match_group_separator(groups, nb_groups, opt)) >= 0) {
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            GET_ARG(arg);
            finish_group(octx, ret, arg);
            av_log(NULL, AV_LOG_DEBUG, " matched as %s with argument '%s'.\n",
                   groups[ret].name, arg);
            continue;
        }

        /* normal options */
        po = find_option(options, opt);
        if (po->name) {
            if (po->flags & OPT_EXIT) {
                /* optional argument, e.g. -h */
                arg = argv[optindex++];
            } else if (po->flags & HAS_ARG) {
                GET_ARG(arg);
            } else {
                arg = "1";
            }

            add_opt(octx, po, opt, arg);
            av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
                   "argument '%s'.\n", po->name, po->help, arg);
            continue;
        }

        /* AVOptions */
        if (argv[optindex]) {
            ret = opt_default(NULL, opt, argv[optindex]);
            if (ret >= 0) {
                av_log(NULL, AV_LOG_DEBUG, " matched as AVOption '%s' with "
                       "argument '%s'.\n", opt, argv[optindex]);
                optindex++;
                continue;
            } else if (ret != AVERROR_OPTION_NOT_FOUND) {
                av_log(NULL, AV_LOG_ERROR, "Error parsing option '%s' "
                       "with argument '%s'.\n", opt, argv[optindex]);
                return ret;
            }
        }

        /* boolean -nofoo options */
        if (opt[0] == 'n' && opt[1] == 'o' &&
            (po = find_option(options, opt + 2)) &&
            po->name && po->flags & OPT_BOOL) {
            add_opt(octx, po, opt, "0");
            av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
                   "argument 0.\n", po->name, po->help);
            continue;
        }

        av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'.\n", opt);
        return AVERROR_OPTION_NOT_FOUND;
    }

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    if (octx->cur_group.nb_opts || codec_opts || format_opts || resample_opts)
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        av_log(NULL, AV_LOG_WARNING, "Trailing options were found on the "
               "commandline.\n");

    av_log(NULL, AV_LOG_DEBUG, "Finished splitting the commandline.\n");

    return 0;
}

811
int opt_loglevel(void *optctx, const char *opt, const char *arg)
812
{
813
    const struct { const char *name; int level; } log_levels[] = {
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        { "quiet"  , AV_LOG_QUIET   },
        { "panic"  , AV_LOG_PANIC   },
        { "fatal"  , AV_LOG_FATAL   },
        { "error"  , AV_LOG_ERROR   },
        { "warning", AV_LOG_WARNING },
        { "info"   , AV_LOG_INFO    },
        { "verbose", AV_LOG_VERBOSE },
        { "debug"  , AV_LOG_DEBUG   },
    };
    char *tail;
    int level;
    int i;

827 828 829 830 831 832 833
    tail = strstr(arg, "repeat");
    av_log_set_flags(tail ? 0 : AV_LOG_SKIP_REPEATED);
    if (tail == arg)
        arg += 6 + (arg[6]=='+');
    if(tail && !*arg)
        return 0;

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    for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++) {
        if (!strcmp(log_levels[i].name, arg)) {
            av_log_set_level(log_levels[i].level);
            return 0;
        }
    }

    level = strtol(arg, &tail, 10);
    if (*tail) {
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        av_log(NULL, AV_LOG_FATAL, "Invalid loglevel \"%s\". "
               "Possible levels are numbers or:\n", arg);
845
        for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++)
846
            av_log(NULL, AV_LOG_FATAL, "\"%s\"\n", log_levels[i].name);
847
        exit_program(1);
848 849 850 851 852
    }
    av_log_set_level(level);
    return 0;
}

853 854
static void expand_filename_template(AVBPrint *bp, const char *template,
                                     struct tm *tm)
855
{
856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882
    int c;

    while ((c = *(template++))) {
        if (c == '%') {
            if (!(c = *(template++)))
                break;
            switch (c) {
            case 'p':
                av_bprintf(bp, "%s", program_name);
                break;
            case 't':
                av_bprintf(bp, "%04d%02d%02d-%02d%02d%02d",
                           tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
                           tm->tm_hour, tm->tm_min, tm->tm_sec);
                break;
            case '%':
                av_bprint_chars(bp, c, 1);
                break;
            }
        } else {
            av_bprint_chars(bp, c, 1);
        }
    }
}

static int init_report(const char *env)
{
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    char *filename_template = NULL;
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    char *key, *val;
    int ret, count = 0;
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    time_t now;
    struct tm *tm;
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    AVBPrint filename;
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    if (report_file) /* already opened */
        return 0;
    time(&now);
    tm = localtime(&now);
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    while (env && *env) {
        if ((ret = av_opt_get_key_value(&env, "=", ":", 0, &key, &val)) < 0) {
            if (count)
                av_log(NULL, AV_LOG_ERROR,
                       "Failed to parse FFREPORT environment variable: %s\n",
                       av_err2str(ret));
            break;
        }
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        if (*env)
            env++;
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        count++;
        if (!strcmp(key, "file")) {
907
            av_free(filename_template);
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            filename_template = val;
            val = NULL;
        } else {
            av_log(NULL, AV_LOG_ERROR, "Unknown key '%s' in FFREPORT\n", key);
        }
        av_free(val);
        av_free(key);
    }

    av_bprint_init(&filename, 0, 1);
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    expand_filename_template(&filename,
                             av_x_if_null(filename_template, "%p-%t.log"), tm);
    av_free(filename_template);
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    if (!av_bprint_is_complete(&filename)) {
        av_log(NULL, AV_LOG_ERROR, "Out of memory building report file name\n");
        return AVERROR(ENOMEM);
    }

    report_file = fopen(filename.str, "w");
927 928
    if (!report_file) {
        av_log(NULL, AV_LOG_ERROR, "Failed to open report \"%s\": %s\n",
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               filename.str, strerror(errno));
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        return AVERROR(errno);
    }
    av_log_set_callback(log_callback_report);
    av_log(NULL, AV_LOG_INFO,
           "%s started on %04d-%02d-%02d at %02d:%02d:%02d\n"
           "Report written to \"%s\"\n",
           program_name,
           tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
           tm->tm_hour, tm->tm_min, tm->tm_sec,
939 940
           filename.str);
    av_bprint_finalize(&filename, NULL);
941 942 943
    return 0;
}

944 945 946 947 948
int opt_report(const char *opt)
{
    return init_report(NULL);
}

949
int opt_max_alloc(void *optctx, const char *opt, const char *arg)
950 951 952 953 954 955 956
{
    char *tail;
    size_t max;

    max = strtol(arg, &tail, 10);
    if (*tail) {
        av_log(NULL, AV_LOG_FATAL, "Invalid max_alloc \"%s\".\n", arg);
957
        exit_program(1);
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    }
    av_max_alloc(max);
    return 0;
}

963
int opt_cpuflags(void *optctx, const char *opt, const char *arg)
964
{
965
    int ret;
966
    unsigned flags = av_get_cpu_flags();
967

968
    if ((ret = av_parse_cpu_caps(&flags, arg)) < 0)
969
        return ret;
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    av_force_cpu_flags(flags);
    return 0;
}

975
int opt_timelimit(void *optctx, const char *opt, const char *arg)
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{
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#if HAVE_SETRLIMIT
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    int lim = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
    struct rlimit rl = { lim, lim + 1 };
    if (setrlimit(RLIMIT_CPU, &rl))
        perror("setrlimit");
#else
983
    av_log(NULL, AV_LOG_WARNING, "-%s not implemented on this OS\n", opt);
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#endif
    return 0;
}

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#if CONFIG_OPENCL
int opt_opencl(void *optctx, const char *opt, const char *arg)
{
    char *key, *value;
    const char *opts = arg;
    int ret = 0;
    while (*opts) {
        ret = av_opt_get_key_value(&opts, "=", ":", 0, &key, &value);
        if (ret < 0)
            return ret;
        ret = av_opencl_set_option(key, value);
        if (ret < 0)
            return ret;
        if (*opts)
            opts++;
    }
    return ret;
}
#endif

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void print_error(const char *filename, int err)
{
1010
    char errbuf[128];
1011
    const char *errbuf_ptr = errbuf;
1012

1013 1014
    if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
        errbuf_ptr = strerror(AVUNERROR(err));
1015
    av_log(NULL, AV_LOG_ERROR, "%s: %s\n", filename, errbuf_ptr);
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}
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1018 1019
static int warned_cfg = 0;

1020 1021
#define INDENT        1
#define SHOW_VERSION  2
1022
#define SHOW_CONFIG   4
1023
#define SHOW_COPYRIGHT 8
1024

1025
#define PRINT_LIB_INFO(libname, LIBNAME, flags, level)                  \
1026
    if (CONFIG_##LIBNAME) {                                             \
1027
        const char *indent = flags & INDENT? "  " : "";                 \
1028
        if (flags & SHOW_VERSION) {                                     \
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            unsigned int version = libname##_version();                 \
1030
            av_log(NULL, level,                                         \
1031
                   "%slib%-11s %2d.%3d.%3d / %2d.%3d.%3d\n",            \
1032 1033 1034 1035 1036
                   indent, #libname,                                    \
                   LIB##LIBNAME##_VERSION_MAJOR,                        \
                   LIB##LIBNAME##_VERSION_MINOR,                        \
                   LIB##LIBNAME##_VERSION_MICRO,                        \
                   version >> 16, version >> 8 & 0xff, version & 0xff); \
1037
        }                                                               \
1038 1039
        if (flags & SHOW_CONFIG) {                                      \
            const char *cfg = libname##_configuration();                \
1040
            if (strcmp(FFMPEG_CONFIGURATION, cfg)) {                    \
1041
                if (!warned_cfg) {                                      \
1042
                    av_log(NULL, level,                                 \
1043
                            "%sWARNING: library configuration mismatch\n", \
1044
                            indent);                                    \
1045 1046
                    warned_cfg = 1;                                     \
                }                                                       \
1047
                av_log(NULL, level, "%s%-11s configuration: %s\n",      \
1048
                        indent, #libname, cfg);                         \
1049 1050
            }                                                           \
        }                                                               \
1051
    }                                                                   \
1052

1053
static void print_all_libs_info(int flags, int level)
1054
{
1055 1056 1057 1058 1059
    PRINT_LIB_INFO(avutil,   AVUTIL,   flags, level);
    PRINT_LIB_INFO(avcodec,  AVCODEC,  flags, level);
    PRINT_LIB_INFO(avformat, AVFORMAT, flags, level);
    PRINT_LIB_INFO(avdevice, AVDEVICE, flags, level);
    PRINT_LIB_INFO(avfilter, AVFILTER, flags, level);
1060
    PRINT_LIB_INFO(avresample, AVRESAMPLE, flags, level);
1061
    PRINT_LIB_INFO(swscale,  SWSCALE,  flags, level);
1062
    PRINT_LIB_INFO(swresample,SWRESAMPLE,  flags, level);
1063
    PRINT_LIB_INFO(postproc, POSTPROC, flags, level);
1064 1065
}

1066 1067 1068 1069 1070 1071 1072 1073 1074
static void print_program_info(int flags, int level)
{
    const char *indent = flags & INDENT? "  " : "";

    av_log(NULL, level, "%s version " FFMPEG_VERSION, program_name);
    if (flags & SHOW_COPYRIGHT)
        av_log(NULL, level, " Copyright (c) %d-%d the FFmpeg developers",
               program_birth_year, this_year);
    av_log(NULL, level, "\n");
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    av_log(NULL, level, "%sbuilt on %s %s with %s\n",
           indent, __DATE__, __TIME__, CC_IDENT);

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    av_log(NULL, level, "%sconfiguration: " FFMPEG_CONFIGURATION "\n", indent);
}

1081
void show_banner(int argc, char **argv, const OptionDef *options)
1082
{
1083 1084 1085 1086
    int idx = locate_option(argc, argv, options, "version");
    if (idx)
        return;

1087
    print_program_info (INDENT|SHOW_COPYRIGHT, AV_LOG_INFO);
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    print_all_libs_info(INDENT|SHOW_CONFIG,  AV_LOG_INFO);
    print_all_libs_info(INDENT|SHOW_VERSION, AV_LOG_INFO);
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}

1092
int show_version(void *optctx, const char *opt, const char *arg)
1093
{
1094
    av_log_set_callback(log_callback_help);
1095
    print_program_info (0           , AV_LOG_INFO);
1096
    print_all_libs_info(SHOW_VERSION, AV_LOG_INFO);
1097

1098
    return 0;
1099 1100
}

1101
int show_license(void *optctx, const char *opt, const char *arg)
1102
{
1103
#if CONFIG_NONFREE
1104
    printf(
1105 1106
    "This version of %s has nonfree parts compiled in.\n"
    "Therefore it is not legally redistributable.\n",
1107
    program_name );
1108
#elif CONFIG_GPLV3
1109
    printf(
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    "%s is free software; you can redistribute it and/or modify\n"
    "it under the terms of the GNU General Public License as published by\n"
    "the Free Software Foundation; either version 3 of the License, or\n"
    "(at your option) any later version.\n"
    "\n"
    "%s is distributed in the hope that it will be useful,\n"
    "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
    "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
    "GNU General Public License for more details.\n"
    "\n"
    "You should have received a copy of the GNU General Public License\n"
    "along with %s.  If not, see <http://www.gnu.org/licenses/>.\n",
1122
    program_name, program_name, program_name );
1123
#elif CONFIG_GPL
1124
    printf(
1125
    "%s is free software; you can redistribute it and/or modify\n"
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    "it under the terms of the GNU General Public License as published by\n"
    "the Free Software Foundation; either version 2 of the License, or\n"
    "(at your option) any later version.\n"
    "\n"
1130
    "%s is distributed in the hope that it will be useful,\n"
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    "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
    "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
    "GNU General Public License for more details.\n"
    "\n"
    "You should have received a copy of the GNU General Public License\n"
1136 1137
    "along with %s; if not, write to the Free Software\n"
    "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
1138
    program_name, program_name, program_name );
1139
#elif CONFIG_LGPLV3
1140
    printf(
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    "%s is free software; you can redistribute it and/or modify\n"
    "it under the terms of the GNU Lesser General Public License as published by\n"
    "the Free Software Foundation; either version 3 of the License, or\n"
    "(at your option) any later version.\n"
    "\n"
    "%s is distributed in the hope that it will be useful,\n"
    "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
    "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
    "GNU Lesser General Public License for more details.\n"
    "\n"
    "You should have received a copy of the GNU Lesser General Public License\n"
    "along with %s.  If not, see <http://www.gnu.org/licenses/>.\n",
1153
    program_name, program_name, program_name );
1154
#else
1155
    printf(
1156
    "%s is free software; you can redistribute it and/or\n"
1157 1158 1159 1160
    "modify it under the terms of the GNU Lesser General Public\n"
    "License as published by the Free Software Foundation; either\n"
    "version 2.1 of the License, or (at your option) any later version.\n"
    "\n"
1161
    "%s is distributed in the hope that it will be useful,\n"
1162 1163 1164 1165 1166
    "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
    "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n"
    "Lesser General Public License for more details.\n"
    "\n"
    "You should have received a copy of the GNU Lesser General Public\n"
1167 1168
    "License along with %s; if not, write to the Free Software\n"
    "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
1169
    program_name, program_name, program_name );
1170
#endif
1171

1172
    return 0;
1173
}
1174

1175
int show_formats(void *optctx, const char *opt, const char *arg)
1176
{
1177 1178
    AVInputFormat *ifmt  = NULL;
    AVOutputFormat *ofmt = NULL;
1179 1180
    const char *last_name;

1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197
    printf("File formats:\n"
           " D. = Demuxing supported\n"
           " .E = Muxing supported\n"
           " --\n");
    last_name = "000";
    for (;;) {
        int decode = 0;
        int encode = 0;
        const char *name      = NULL;
        const char *long_name = NULL;

        while ((ofmt = av_oformat_next(ofmt))) {
            if ((name == NULL || strcmp(ofmt->name, name) < 0) &&
                strcmp(ofmt->name, last_name) > 0) {
                name      = ofmt->name;
                long_name = ofmt->long_name;
                encode    = 1;
1198 1199
            }
        }
1200 1201 1202 1203 1204 1205
        while ((ifmt = av_iformat_next(ifmt))) {
            if ((name == NULL || strcmp(ifmt->name, name) < 0) &&
                strcmp(ifmt->name, last_name) > 0) {
                name      = ifmt->name;
                long_name = ifmt->long_name;
                encode    = 0;
1206
            }
1207 1208
            if (name && strcmp(ifmt->name, name) == 0)
                decode = 1;
1209
        }
1210
        if (name == NULL)
1211
            break;
1212
        last_name = name;
1213

1214 1215 1216 1217
        printf(" %s%s %-15s %s\n",
               decode ? "D" : " ",
               encode ? "E" : " ",
               name,
1218 1219
            long_name ? long_name:" ");
    }
1220
    return 0;
1221
}
1222

1223 1224
#define PRINT_CODEC_SUPPORTED(codec, field, type, list_name, term, get_name) \
    if (codec->field) {                                                      \
1225
        const type *p = codec->field;                                        \
1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242
                                                                             \
        printf("    Supported " list_name ":");                              \
        while (*p != term) {                                                 \
            get_name(*p);                                                    \
            printf(" %s", name);                                             \
            p++;                                                             \
        }                                                                    \
        printf("\n");                                                        \
    }                                                                        \

static void print_codec(const AVCodec *c)
{
    int encoder = av_codec_is_encoder(c);

    printf("%s %s [%s]:\n", encoder ? "Encoder" : "Decoder", c->name,
           c->long_name ? c->long_name : "");

1243 1244
    if (c->type == AVMEDIA_TYPE_VIDEO ||
        c->type == AVMEDIA_TYPE_AUDIO) {
1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266
        printf("    Threading capabilities: ");
        switch (c->capabilities & (CODEC_CAP_FRAME_THREADS |
                                   CODEC_CAP_SLICE_THREADS)) {
        case CODEC_CAP_FRAME_THREADS |
             CODEC_CAP_SLICE_THREADS: printf("frame and slice"); break;
        case CODEC_CAP_FRAME_THREADS: printf("frame");           break;
        case CODEC_CAP_SLICE_THREADS: printf("slice");           break;
        default:                      printf("no");              break;
        }
        printf("\n");
    }

    if (c->supported_framerates) {
        const AVRational *fps = c->supported_framerates;

        printf("    Supported framerates:");
        while (fps->num) {
            printf(" %d/%d", fps->num, fps->den);
            fps++;
        }
        printf("\n");
    }
1267 1268
    PRINT_CODEC_SUPPORTED(c, pix_fmts, enum AVPixelFormat, "pixel formats",
                          AV_PIX_FMT_NONE, GET_PIX_FMT_NAME);
1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282
    PRINT_CODEC_SUPPORTED(c, supported_samplerates, int, "sample rates", 0,
                          GET_SAMPLE_RATE_NAME);
    PRINT_CODEC_SUPPORTED(c, sample_fmts, enum AVSampleFormat, "sample formats",
                          AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME);
    PRINT_CODEC_SUPPORTED(c, channel_layouts, uint64_t, "channel layouts",
                          0, GET_CH_LAYOUT_DESC);

    if (c->priv_class) {
        show_help_children(c->priv_class,
                           AV_OPT_FLAG_ENCODING_PARAM |
                           AV_OPT_FLAG_DECODING_PARAM);
    }
}

1283 1284
static char get_media_type_char(enum AVMediaType type)
{
1285 1286 1287
    switch (type) {
        case AVMEDIA_TYPE_VIDEO:    return 'V';
        case AVMEDIA_TYPE_AUDIO:    return 'A';
1288
        case AVMEDIA_TYPE_DATA:     return 'D';
1289
        case AVMEDIA_TYPE_SUBTITLE: return 'S';
1290
        case AVMEDIA_TYPE_ATTACHMENT:return 'T';
1291 1292
        default:                    return '?';
    }
1293 1294
}

1295 1296
static const AVCodec *next_codec_for_id(enum AVCodecID id, const AVCodec *prev,
                                        int encoder)
1297
{
1298 1299 1300 1301 1302 1303 1304 1305
    while ((prev = av_codec_next(prev))) {
        if (prev->id == id &&
            (encoder ? av_codec_is_encoder(prev) : av_codec_is_decoder(prev)))
            return prev;
    }
    return NULL;
}

1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323
static int compare_codec_desc(const void *a, const void *b)
{
    const AVCodecDescriptor * const *da = a;
    const AVCodecDescriptor * const *db = b;

    return (*da)->type != (*db)->type ? (*da)->type - (*db)->type :
           strcmp((*da)->name, (*db)->name);
}

static unsigned get_codecs_sorted(const AVCodecDescriptor ***rcodecs)
{
    const AVCodecDescriptor *desc = NULL;
    const AVCodecDescriptor **codecs;
    unsigned nb_codecs = 0, i = 0;

    while ((desc = avcodec_descriptor_next(desc)))
        nb_codecs++;
    if (!(codecs = av_calloc(nb_codecs, sizeof(*codecs)))) {
1324
        av_log(NULL, AV_LOG_ERROR, "Out of memory\n");
1325
        exit_program(1);
1326 1327 1328 1329 1330 1331 1332 1333 1334 1335
    }
    desc = NULL;
    while ((desc = avcodec_descriptor_next(desc)))
        codecs[i++] = desc;
    av_assert0(i == nb_codecs);
    qsort(codecs, nb_codecs, sizeof(*codecs), compare_codec_desc);
    *rcodecs = codecs;
    return nb_codecs;
}

1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347
static void print_codecs_for_id(enum AVCodecID id, int encoder)
{
    const AVCodec *codec = NULL;

    printf(" (%s: ", encoder ? "encoders" : "decoders");

    while ((codec = next_codec_for_id(id, codec, encoder)))
        printf("%s ", codec->name);

    printf(")");
}

1348
int show_codecs(void *optctx, const char *opt, const char *arg)
1349
{
1350 1351
    const AVCodecDescriptor **codecs;
    unsigned i, nb_codecs = get_codecs_sorted(&codecs);
1352

1353
    printf("Codecs:\n"
1354 1355 1356 1357 1358 1359 1360 1361 1362
           " D..... = Decoding supported\n"
           " .E.... = Encoding supported\n"
           " ..V... = Video codec\n"
           " ..A... = Audio codec\n"
           " ..S... = Subtitle codec\n"
           " ...I.. = Intra frame-only codec\n"
           " ....L. = Lossy compression\n"
           " .....S = Lossless compression\n"
           " -------\n");
1363 1364
    for (i = 0; i < nb_codecs; i++) {
        const AVCodecDescriptor *desc = codecs[i];
1365 1366
        const AVCodec *codec = NULL;

1367
        printf(" ");
1368 1369 1370 1371 1372
        printf(avcodec_find_decoder(desc->id) ? "D" : ".");
        printf(avcodec_find_encoder(desc->id) ? "E" : ".");

        printf("%c", get_media_type_char(desc->type));
        printf((desc->props & AV_CODEC_PROP_INTRA_ONLY) ? "I" : ".");
1373 1374
        printf((desc->props & AV_CODEC_PROP_LOSSY)      ? "L" : ".");
        printf((desc->props & AV_CODEC_PROP_LOSSLESS)   ? "S" : ".");
1375 1376 1377 1378 1379 1380 1381 1382 1383

        printf(" %-20s %s", desc->name, desc->long_name ? desc->long_name : "");

        /* print decoders/encoders when there's more than one or their
         * names are different from codec name */
        while ((codec = next_codec_for_id(desc->id, codec, 0))) {
            if (strcmp(codec->name, desc->name)) {
                print_codecs_for_id(desc->id, 0);
                break;
1384
            }
1385 1386 1387 1388 1389 1390
        }
        codec = NULL;
        while ((codec = next_codec_for_id(desc->id, codec, 1))) {
            if (strcmp(codec->name, desc->name)) {
                print_codecs_for_id(desc->id, 1);
                break;
1391 1392 1393 1394 1395
            }
        }

        printf("\n");
    }
1396
    av_free(codecs);
1397
    return 0;
1398 1399 1400 1401
}

static void print_codecs(int encoder)
{
1402 1403
    const AVCodecDescriptor **codecs;
    unsigned i, nb_codecs = get_codecs_sorted(&codecs);
1404 1405

    printf("%s:\n"
1406 1407 1408 1409 1410 1411 1412 1413 1414
           " V..... = Video\n"
           " A..... = Audio\n"
           " S..... = Subtitle\n"
           " .F.... = Frame-level multithreading\n"
           " ..S... = Slice-level multithreading\n"
           " ...X.. = Codec is experimental\n"
           " ....B. = Supports draw_horiz_band\n"
           " .....D = Supports direct rendering method 1\n"
           " ------\n",
1415
           encoder ? "Encoders" : "Decoders");
1416 1417
    for (i = 0; i < nb_codecs; i++) {
        const AVCodecDescriptor *desc = codecs[i];
1418 1419 1420
        const AVCodec *codec = NULL;

        while ((codec = next_codec_for_id(desc->id, codec, encoder))) {
1421
            printf(" %c", get_media_type_char(desc->type));
1422 1423 1424
            printf((codec->capabilities & CODEC_CAP_FRAME_THREADS) ? "F" : ".");
            printf((codec->capabilities & CODEC_CAP_SLICE_THREADS) ? "S" : ".");
            printf((codec->capabilities & CODEC_CAP_EXPERIMENTAL)  ? "X" : ".");
1425 1426
            printf((codec->capabilities & CODEC_CAP_DRAW_HORIZ_BAND)?"B" : ".");
            printf((codec->capabilities & CODEC_CAP_DR1)           ? "D" : ".");
1427 1428 1429 1430 1431 1432 1433 1434

            printf(" %-20s %s", codec->name, codec->long_name ? codec->long_name : "");
            if (strcmp(codec->name, desc->name))
                printf(" (codec %s)", desc->name);

            printf("\n");
        }
    }
1435
    av_free(codecs);
1436 1437
}

1438
int show_decoders(void *optctx, const char *opt, const char *arg)
1439 1440 1441 1442 1443
{
    print_codecs(0);
    return 0;
}

1444
int show_encoders(void *optctx, const char *opt, const char *arg)
1445 1446
{
    print_codecs(1);
1447
    return 0;
1448 1449
}

1450
int show_bsfs(void *optctx, const char *opt, const char *arg)
1451
{
1452
    AVBitStreamFilter *bsf = NULL;
1453 1454

    printf("Bitstream filters:\n");
1455
    while ((bsf = av_bitstream_filter_next(bsf)))
1456
        printf("%s\n", bsf->name);
1457
    printf("\n");
1458
    return 0;
1459 1460
}

1461
int show_protocols(void *optctx, const char *opt, const char *arg)
1462
{
1463 1464
    void *opaque = NULL;
    const char *name;
1465

1466
    printf("Supported file protocols:\n"
1467 1468 1469 1470 1471 1472
           "Input:\n");
    while ((name = avio_enum_protocols(&opaque, 0)))
        printf("%s\n", name);
    printf("Output:\n");
    while ((name = avio_enum_protocols(&opaque, 1)))
        printf("%s\n", name);
1473
    return 0;
1474
}
1475

1476
int show_filters(void *optctx, const char *opt, const char *arg)
1477
{
1478
    const AVFilter av_unused(*filter) = NULL;
1479 1480 1481
    char descr[64], *descr_cur;
    int i, j;
    const AVFilterPad *pad;
1482

1483
    printf("Filters:\n"
1484 1485 1486
           "  T.. = Timeline support\n"
           "  .S. = Slice threading\n"
           "  ..C = Commmand support\n"
1487 1488 1489 1490
           "  A = Audio input/output\n"
           "  V = Video input/output\n"
           "  N = Dynamic number and/or type of input/output\n"
           "  | = Source or sink filter\n");
1491
#if CONFIG_AVFILTER
1492
    while ((filter = avfilter_next(filter))) {
1493 1494 1495 1496 1497 1498
        descr_cur = descr;
        for (i = 0; i < 2; i++) {
            if (i) {
                *(descr_cur++) = '-';
                *(descr_cur++) = '>';
            }
1499
            pad = i ? filter->outputs : filter->inputs;
1500
            for (j = 0; pad && pad[j].name; j++) {
1501 1502 1503 1504 1505
                if (descr_cur >= descr + sizeof(descr) - 4)
                    break;
                *(descr_cur++) = get_media_type_char(pad[j].type);
            }
            if (!j)
1506 1507
                *(descr_cur++) = ((!i && (filter->flags & AVFILTER_FLAG_DYNAMIC_INPUTS)) ||
                                  ( i && (filter->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS))) ? 'N' : '|';
1508 1509
        }
        *descr_cur = 0;
1510
        printf(" %c%c%c %-16s %-10s %s\n",
1511 1512
               filter->flags & AVFILTER_FLAG_SUPPORT_TIMELINE ? 'T' : '.',
               filter->flags & AVFILTER_FLAG_SLICE_THREADS    ? 'S' : '.',
1513
               filter->process_command                        ? 'C' : '.',
1514
               filter->name, descr, filter->description);
1515
    }
1516
#endif
1517
    return 0;
1518 1519
}

1520
int show_pix_fmts(void *optctx, const char *opt, const char *arg)
1521
{
1522
    const AVPixFmtDescriptor *pix_desc = NULL;
1523

1524 1525 1526 1527 1528 1529 1530 1531
    printf("Pixel formats:\n"
           "I.... = Supported Input  format for conversion\n"
           ".O... = Supported Output format for conversion\n"
           "..H.. = Hardware accelerated format\n"
           "...P. = Paletted format\n"
           "....B = Bitstream format\n"
           "FLAGS NAME            NB_COMPONENTS BITS_PER_PIXEL\n"
           "-----\n");
1532

1533 1534 1535 1536 1537
#if !CONFIG_SWSCALE
#   define sws_isSupportedInput(x)  0
#   define sws_isSupportedOutput(x) 0
#endif

1538 1539
    while ((pix_desc = av_pix_fmt_desc_next(pix_desc))) {
        enum AVPixelFormat pix_fmt = av_pix_fmt_desc_get_id(pix_desc);
1540
        printf("%c%c%c%c%c %-16s       %d            %2d\n",
1541 1542 1543 1544 1545
               sws_isSupportedInput (pix_fmt)              ? 'I' : '.',
               sws_isSupportedOutput(pix_fmt)              ? 'O' : '.',
               pix_desc->flags & AV_PIX_FMT_FLAG_HWACCEL   ? 'H' : '.',
               pix_desc->flags & AV_PIX_FMT_FLAG_PAL       ? 'P' : '.',
               pix_desc->flags & AV_PIX_FMT_FLAG_BITSTREAM ? 'B' : '.',
1546 1547 1548 1549
               pix_desc->name,
               pix_desc->nb_components,
               av_get_bits_per_pixel(pix_desc));
    }
1550
    return 0;
1551 1552
}

1553
int show_layouts(void *optctx, const char *opt, const char *arg)
1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581
{
    int i = 0;
    uint64_t layout, j;
    const char *name, *descr;

    printf("Individual channels:\n"
           "NAME        DESCRIPTION\n");
    for (i = 0; i < 63; i++) {
        name = av_get_channel_name((uint64_t)1 << i);
        if (!name)
            continue;
        descr = av_get_channel_description((uint64_t)1 << i);
        printf("%-12s%s\n", name, descr);
    }
    printf("\nStandard channel layouts:\n"
           "NAME        DECOMPOSITION\n");
    for (i = 0; !av_get_standard_channel_layout(i, &layout, &name); i++) {
        if (name) {
            printf("%-12s", name);
            for (j = 1; j; j <<= 1)
                if ((layout & j))
                    printf("%s%s", (layout & (j - 1)) ? "+" : "", av_get_channel_name(j));
            printf("\n");
        }
    }
    return 0;
}

1582
int show_sample_fmts(void *optctx, const char *opt, const char *arg)
1583 1584 1585 1586 1587 1588 1589 1590
{
    int i;
    char fmt_str[128];
    for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
        printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
    return 0;
}

1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614
static void show_help_codec(const char *name, int encoder)
{
    const AVCodecDescriptor *desc;
    const AVCodec *codec;

    if (!name) {
        av_log(NULL, AV_LOG_ERROR, "No codec name specified.\n");
        return;
    }

    codec = encoder ? avcodec_find_encoder_by_name(name) :
                      avcodec_find_decoder_by_name(name);

    if (codec)
        print_codec(codec);
    else if ((desc = avcodec_descriptor_get_by_name(name))) {
        int printed = 0;

        while ((codec = next_codec_for_id(desc->id, codec, encoder))) {
            printed = 1;
            print_codec(codec);
        }

        if (!printed) {
1615 1616
            av_log(NULL, AV_LOG_ERROR, "Codec '%s' is known to FFmpeg, "
                   "but no %s for it are available. FFmpeg might need to be "
1617 1618 1619 1620
                   "recompiled with additional external libraries.\n",
                   name, encoder ? "encoders" : "decoders");
        }
    } else {
1621
        av_log(NULL, AV_LOG_ERROR, "Codec '%s' is not recognized by FFmpeg.\n",
1622 1623 1624 1625
               name);
    }
}

1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676
static void show_help_demuxer(const char *name)
{
    const AVInputFormat *fmt = av_find_input_format(name);

    if (!fmt) {
        av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
        return;
    }

    printf("Demuxer %s [%s]:\n", fmt->name, fmt->long_name);

    if (fmt->extensions)
        printf("    Common extensions: %s.\n", fmt->extensions);

    if (fmt->priv_class)
        show_help_children(fmt->priv_class, AV_OPT_FLAG_DECODING_PARAM);
}

static void show_help_muxer(const char *name)
{
    const AVCodecDescriptor *desc;
    const AVOutputFormat *fmt = av_guess_format(name, NULL, NULL);

    if (!fmt) {
        av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
        return;
    }

    printf("Muxer %s [%s]:\n", fmt->name, fmt->long_name);

    if (fmt->extensions)
        printf("    Common extensions: %s.\n", fmt->extensions);
    if (fmt->mime_type)
        printf("    Mime type: %s.\n", fmt->mime_type);
    if (fmt->video_codec != AV_CODEC_ID_NONE &&
        (desc = avcodec_descriptor_get(fmt->video_codec))) {
        printf("    Default video codec: %s.\n", desc->name);
    }
    if (fmt->audio_codec != AV_CODEC_ID_NONE &&
        (desc = avcodec_descriptor_get(fmt->audio_codec))) {
        printf("    Default audio codec: %s.\n", desc->name);
    }
    if (fmt->subtitle_codec != AV_CODEC_ID_NONE &&
        (desc = avcodec_descriptor_get(fmt->subtitle_codec))) {
        printf("    Default subtitle codec: %s.\n", desc->name);
    }

    if (fmt->priv_class)
        show_help_children(fmt->priv_class, AV_OPT_FLAG_ENCODING_PARAM);
}

1677
#if CONFIG_AVFILTER
1678 1679
static void show_help_filter(const char *name)
{
1680
#if CONFIG_AVFILTER
1681 1682
    const AVFilter *f = avfilter_get_by_name(name);
    int i, count;
1683 1684 1685 1686

    if (!name) {
        av_log(NULL, AV_LOG_ERROR, "No filter name specified.\n");
        return;
1687 1688
    } else if (!f) {
        av_log(NULL, AV_LOG_ERROR, "Unknown filter '%s'.\n", name);
1689 1690
        return;
    }
1691

1692 1693 1694
    printf("Filter %s\n", f->name);
    if (f->description)
        printf("  %s\n", f->description);
1695 1696 1697

    if (f->flags & AVFILTER_FLAG_SLICE_THREADS)
        printf("    slice threading supported\n");
1698 1699 1700 1701

    printf("    Inputs:\n");
    count = avfilter_pad_count(f->inputs);
    for (i = 0; i < count; i++) {
1702
        printf("       #%d: %s (%s)\n", i, avfilter_pad_get_name(f->inputs, i),
1703 1704 1705 1706
               media_type_string(avfilter_pad_get_type(f->inputs, i)));
    }
    if (f->flags & AVFILTER_FLAG_DYNAMIC_INPUTS)
        printf("        dynamic (depending on the options)\n");
1707 1708
    else if (!count)
        printf("        none (source filter)\n");
1709 1710 1711 1712

    printf("    Outputs:\n");
    count = avfilter_pad_count(f->outputs);
    for (i = 0; i < count; i++) {
1713
        printf("       #%d: %s (%s)\n", i, avfilter_pad_get_name(f->outputs, i),
1714 1715 1716 1717
               media_type_string(avfilter_pad_get_type(f->outputs, i)));
    }
    if (f->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS)
        printf("        dynamic (depending on the options)\n");
1718 1719
    else if (!count)
        printf("        none (sink filter)\n");
1720 1721

    if (f->priv_class)
1722
        show_help_children(f->priv_class, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM |
1723
                                          AV_OPT_FLAG_AUDIO_PARAM);
1724 1725
    if (f->flags & AVFILTER_FLAG_SUPPORT_TIMELINE)
        printf("This filter has support for timeline through the 'enable' option.\n");
1726 1727 1728 1729
#else
    av_log(NULL, AV_LOG_ERROR, "Build without libavfilter; "
           "can not to satisfy request\n");
#endif
1730
}
1731
#endif
1732

1733
int show_help(void *optctx, const char *opt, const char *arg)
1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748
{
    char *topic, *par;
    av_log_set_callback(log_callback_help);

    topic = av_strdup(arg ? arg : "");
    par = strchr(topic, '=');
    if (par)
        *par++ = 0;

    if (!*topic) {
        show_help_default(topic, par);
    } else if (!strcmp(topic, "decoder")) {
        show_help_codec(par, 0);
    } else if (!strcmp(topic, "encoder")) {
        show_help_codec(par, 1);
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    } else if (!strcmp(topic, "demuxer")) {
        show_help_demuxer(par);
    } else if (!strcmp(topic, "muxer")) {
        show_help_muxer(par);
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#if CONFIG_AVFILTER
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    } else if (!strcmp(topic, "filter")) {
        show_help_filter(par);
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#endif
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    } else {
        show_help_default(topic, par);
    }

    av_freep(&topic);
    return 0;
}

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int read_yesno(void)
{
    int c = getchar();
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    int yesno = (av_toupper(c) == 'Y');
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    while (c != '\n' && c != EOF)
        c = getchar();

    return yesno;
}
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int cmdutils_read_file(const char *filename, char **bufptr, size_t *size)
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{
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    int ret;
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    FILE *f = fopen(filename, "rb");
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    if (!f) {
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        av_log(NULL, AV_LOG_ERROR, "Cannot read file '%s': %s\n", filename,
               strerror(errno));
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        return AVERROR(errno);
    }
    fseek(f, 0, SEEK_END);
    *size = ftell(f);
    fseek(f, 0, SEEK_SET);
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    if (*size == (size_t)-1) {
        av_log(NULL, AV_LOG_ERROR, "IO error: %s\n", strerror(errno));
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        fclose(f);
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        return AVERROR(errno);
    }
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    *bufptr = av_malloc(*size + 1);
    if (!*bufptr) {
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        av_log(NULL, AV_LOG_ERROR, "Could not allocate file buffer\n");
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        fclose(f);
        return AVERROR(ENOMEM);
    }
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    ret = fread(*bufptr, 1, *size, f);
    if (ret < *size) {
        av_free(*bufptr);
        if (ferror(f)) {
            av_log(NULL, AV_LOG_ERROR, "Error while reading file '%s': %s\n",
                   filename, strerror(errno));
            ret = AVERROR(errno);
        } else
            ret = AVERROR_EOF;
    } else {
        ret = 0;
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        (*bufptr)[(*size)++] = '\0';
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    }
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    fclose(f);
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    return ret;
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}
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FILE *get_preset_file(char *filename, size_t filename_size,
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                      const char *preset_name, int is_path,
                      const char *codec_name)
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{
    FILE *f = NULL;
    int i;
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    const char *base[3] = { getenv("FFMPEG_DATADIR"),
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                            getenv("HOME"),
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                            FFMPEG_DATADIR, };
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    if (is_path) {
        av_strlcpy(filename, preset_name, filename_size);
        f = fopen(filename, "r");
    } else {
Gianluigi Tiesi's avatar
Gianluigi Tiesi committed
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#ifdef _WIN32
        char datadir[MAX_PATH], *ls;
        base[2] = NULL;

        if (GetModuleFileNameA(GetModuleHandleA(NULL), datadir, sizeof(datadir) - 1))
        {
            for (ls = datadir; ls < datadir + strlen(datadir); ls++)
                if (*ls == '\\') *ls = '/';

            if (ls = strrchr(datadir, '/'))
            {
                *ls = 0;
                strncat(datadir, "/ffpresets",  sizeof(datadir) - 1 - strlen(datadir));
                base[2] = datadir;
            }
        }
#endif
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        for (i = 0; i < 3 && !f; i++) {
            if (!base[i])
                continue;
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            snprintf(filename, filename_size, "%s%s/%s.ffpreset", base[i],
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                     i != 1 ? "" : "/.ffmpeg", preset_name);
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            f = fopen(filename, "r");
            if (!f && codec_name) {
                snprintf(filename, filename_size,
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                         "%s%s/%s-%s.ffpreset",
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                         base[i], i != 1 ? "" : "/.ffmpeg", codec_name,
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                         preset_name);
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                f = fopen(filename, "r");
            }
        }
    }

    return f;
}

1868 1869
int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
{
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    int ret = avformat_match_stream_specifier(s, st, spec);
    if (ret < 0)
        av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
    return ret;
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}

1876
AVDictionary *filter_codec_opts(AVDictionary *opts, enum AVCodecID codec_id,
1877
                                AVFormatContext *s, AVStream *st, AVCodec *codec)
1878 1879 1880
{
    AVDictionary    *ret = NULL;
    AVDictionaryEntry *t = NULL;
1881 1882
    int            flags = s->oformat ? AV_OPT_FLAG_ENCODING_PARAM
                                      : AV_OPT_FLAG_DECODING_PARAM;
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    char          prefix = 0;
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    const AVClass    *cc = avcodec_get_class();
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1886 1887 1888
    if (!codec)
        codec            = s->oformat ? avcodec_find_encoder(codec_id)
                                      : avcodec_find_decoder(codec_id);
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1890
    switch (st->codec->codec_type) {
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    case AVMEDIA_TYPE_VIDEO:
        prefix  = 'v';
        flags  |= AV_OPT_FLAG_VIDEO_PARAM;
        break;
    case AVMEDIA_TYPE_AUDIO:
        prefix  = 'a';
        flags  |= AV_OPT_FLAG_AUDIO_PARAM;
        break;
    case AVMEDIA_TYPE_SUBTITLE:
        prefix  = 's';
        flags  |= AV_OPT_FLAG_SUBTITLE_PARAM;
        break;
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    }

    while (t = av_dict_get(opts, "", t, AV_DICT_IGNORE_SUFFIX)) {
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        char *p = strchr(t->key, ':');

        /* check stream specification in opt name */
        if (p)
            switch (check_stream_specifier(s, st, p + 1)) {
            case  1: *p = 0; break;
            case  0:         continue;
            default:         return NULL;
            }

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        if (av_opt_find(&cc, t->key, NULL, flags, AV_OPT_SEARCH_FAKE_OBJ) ||
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            (codec && codec->priv_class &&
             av_opt_find(&codec->priv_class, t->key, NULL, flags,
                         AV_OPT_SEARCH_FAKE_OBJ)))
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            av_dict_set(&ret, t->key, t->value, 0);
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        else if (t->key[0] == prefix &&
                 av_opt_find(&cc, t->key + 1, NULL, flags,
                             AV_OPT_SEARCH_FAKE_OBJ))
            av_dict_set(&ret, t->key + 1, t->value, 0);
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        if (p)
            *p = ':';
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    }
    return ret;
}

1932 1933
AVDictionary **setup_find_stream_info_opts(AVFormatContext *s,
                                           AVDictionary *codec_opts)
1934 1935 1936 1937 1938 1939 1940 1941
{
    int i;
    AVDictionary **opts;

    if (!s->nb_streams)
        return NULL;
    opts = av_mallocz(s->nb_streams * sizeof(*opts));
    if (!opts) {
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        av_log(NULL, AV_LOG_ERROR,
               "Could not alloc memory for stream options.\n");
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        return NULL;
    }
    for (i = 0; i < s->nb_streams; i++)
1947
        opts[i] = filter_codec_opts(codec_opts, s->streams[i]->codec->codec_id,
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                                    s, s->streams[i], NULL);
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    return opts;
}

1952 1953 1954 1955
void *grow_array(void *array, int elem_size, int *size, int new_size)
{
    if (new_size >= INT_MAX / elem_size) {
        av_log(NULL, AV_LOG_ERROR, "Array too big.\n");
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        exit_program(1);
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    }
    if (*size < new_size) {
        uint8_t *tmp = av_realloc(array, new_size*elem_size);
        if (!tmp) {
            av_log(NULL, AV_LOG_ERROR, "Could not alloc buffer.\n");
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            exit_program(1);
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        }
        memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
        *size = new_size;
        return tmp;
    }
    return array;
}