Function opt_input_file

ffmpeg.c:2949–3147

}

static void opt_input_file(const char *filename)
{
    AVFormatContext *ic;
    AVFormatParameters params, *ap = &params;
    AVInputFormat *file_iformat = NULL;
    int err, i, ret, rfps, rfps_base;
    int64_t timestamp;

    if (last_asked_format) {
        if (!(file_iformat = av_find_input_format(last_asked_format))) {
            fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
            av_exit(1);
        }
        last_asked_format = NULL;
    }

    if (!strcmp(filename, "-"))
        filename = "pipe:";

    using_stdin |= !strncmp(filename, "pipe:", 5) ||
                    !strcmp(filename, "/dev/stdin");

    /* get default parameters from command line */
    ic = avformat_alloc_context();
    if (!ic) {
        print_error(filename, AVERROR(ENOMEM));
        av_exit(1);
    }

    memset(ap, 0, sizeof(*ap));
    ap->prealloced_context = 1;
    ap->sample_rate = audio_sample_rate;
    ap->channels = audio_channels;
    ap->time_base.den = frame_rate.num;
    ap->time_base.num = frame_rate.den;
    ap->width = frame_width + frame_padleft + frame_padright;
    ap->height = frame_height + frame_padtop + frame_padbottom;
    ap->pix_fmt = frame_pix_fmt;
   // ap->sample_fmt = audio_sample_fmt; //FIXME:not implemented in libavformat
    ap->channel = video_channel;
    ap->standard = video_standard;

    set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM);

    ic->video_codec_id   =
        find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0,
                          avcodec_opts[AVMEDIA_TYPE_VIDEO   ]->strict_std_compliance);
    ic->audio_codec_id   =
        find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0,
                          avcodec_opts[AVMEDIA_TYPE_AUDIO   ]->strict_std_compliance);
    ic->subtitle_codec_id=
        find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0,
                          avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
    ic->flags |= AVFMT_FLAG_NONBLOCK;

    if(pgmyuv_compatibility_hack)
        ic->video_codec_id= CODEC_ID_PGMYUV;