Function decode_thread

ffplay.c:2355–2613

this thread gets the stream from the disk or the network */

/* this thread gets the stream from the disk or the network */
static int decode_thread(void *arg)
{
    VideoState *is = arg;
    AVFormatContext *ic;
    int err, i, ret;
    int st_index[AVMEDIA_TYPE_NB];
    int st_count[AVMEDIA_TYPE_NB]={0};
    int st_best_packet_count[AVMEDIA_TYPE_NB];
    AVPacket pkt1, *pkt = &pkt1;
    AVFormatParameters params, *ap = &params;
    int eof=0;
    int pkt_in_play_range = 0;

    ic = avformat_alloc_context();

    memset(st_index, -1, sizeof(st_index));
    memset(st_best_packet_count, -1, sizeof(st_best_packet_count));
    is->video_stream = -1;
    is->audio_stream = -1;
    is->subtitle_stream = -1;

    global_video_state = is;
    url_set_interrupt_cb(decode_interrupt_cb);

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

    ap->prealloced_context = 1;
    ap->width = frame_width;
    ap->height= frame_height;
    ap->time_base= (AVRational){1, 25};
    ap->pix_fmt = frame_pix_fmt;

    set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM);

    err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
    if (err < 0) {
        print_error(is->filename, err);
        ret = -1;
        goto fail;
    }
    is->ic = ic;

    if(genpts)
        ic->flags |= AVFMT_FLAG_GENPTS;

    err = av_find_stream_info(ic);
    if (err < 0) {
        fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
        ret = -1;
        goto fail;
    }
    if(ic->pb)
        ic->pb->eof_reached= 0; //FIXME hack, ffplay maybe should not use url_feof() to test for the end

    if(seek_by_bytes<0)
        seek_by_bytes= !!(ic->iformat->flags & AVFMT_TS_DISCONT);

    /* if seeking requested, we execute it */