Function dca_parse

libavcodec/dca_parser.c:307–345

}

static int dca_parse(AVCodecParserContext *s, AVCodecContext *avctx,
                     const uint8_t **poutbuf, int *poutbuf_size,
                     const uint8_t *buf, int buf_size)
{
    DCAParseContext *pc1 = s->priv_data;
    ParseContext *pc = &pc1->pc;
    int next, duration, sample_rate;

    if (s->flags & PARSER_FLAG_COMPLETE_FRAMES) {
        next = buf_size;
    } else {
        next = dca_find_frame_end(pc1, buf, buf_size);

        if (ff_combine_frame(pc, next, &buf, &buf_size) < 0) {
            *poutbuf      = NULL;
            *poutbuf_size = 0;
            return buf_size;
        }

        /* skip initial padding */
        if (buf_size  > pc1->startpos) {
            buf      += pc1->startpos;
            buf_size -= pc1->startpos;
        }
        pc1->startpos = 0;
    }

    /* read the duration and sample rate from the frame header */
    if (!dca_parse_params(pc1, buf, buf_size, &duration, &sample_rate, &avctx->profile)) {
        if (!avctx->sample_rate)
            avctx->sample_rate = sample_rate;
        s->duration = av_rescale(duration, avctx->sample_rate, sample_rate);
    } else
        s->duration = 0;

    *poutbuf      = buf;
    *poutbuf_size = buf_size;
    return next;
}

const FFCodecParser ff_dca_parser = {
    PARSER_CODEC_LIST(AV_CODEC_ID_DTS),