Function open_input_file

fftools/ffprobe.c:2425–2541

}

static int open_input_file(InputFile *ifile, const char *filename,
                           const char *print_filename)
{
    int err, i;
    AVFormatContext *fmt_ctx = NULL;
    const AVDictionaryEntry *t = NULL;
    int scan_all_pmts_set = 0;

    fmt_ctx = avformat_alloc_context();
    if (!fmt_ctx)
        return AVERROR(ENOMEM);

    err = set_decoders(fmt_ctx);
    if (err < 0)
        return err;
    if (!av_dict_get(format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE)) {
        av_dict_set(&format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE);
        scan_all_pmts_set = 1;
    }
    if ((err = avformat_open_input(&fmt_ctx, filename,
                                   iformat, &format_opts)) < 0) {
        print_error(filename, err);
        return err;
    }
    if (print_filename) {
        av_freep(&fmt_ctx->url);
        fmt_ctx->url = av_strdup(print_filename);
    }
    ifile->fmt_ctx = fmt_ctx;
    if (scan_all_pmts_set)
        av_dict_set(&format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE);
    while ((t = av_dict_iterate(format_opts, t)))
        av_log(NULL, AV_LOG_WARNING, "Option %s skipped - not known to demuxer.\n", t->key);

    if (find_stream_info) {
        AVDictionary **opts;
        int orig_nb_streams = fmt_ctx->nb_streams;

        err = setup_find_stream_info_opts(fmt_ctx, codec_opts, &opts);
        if (err < 0)
            return err;

        err = avformat_find_stream_info(fmt_ctx, opts);

        for (i = 0; i < orig_nb_streams; i++)
            av_dict_free(&opts[i]);
        av_freep(&opts);

        if (err < 0) {
            print_error(filename, err);
            return err;
        }
    }

    av_dump_format(fmt_ctx, 0, filename, 0);

    ifile->streams = av_calloc(fmt_ctx->nb_streams, sizeof(*ifile->streams));
    if (!ifile->streams)