Function av_parser_parse2

libavcodec/parser.c:143–193

}

int av_parser_parse2(AVCodecParserContext *s,
                     AVCodecContext *avctx,
                     uint8_t **poutbuf, int *poutbuf_size,
                     const uint8_t *buf, int buf_size,
                     int64_t pts, int64_t dts,
                     int64_t pos)
{
    int index, i;
    uint8_t dummy_buf[FF_INPUT_BUFFER_PADDING_SIZE];

    if (buf_size == 0) {
        /* padding is always necessary even if EOF, so we add it here */
        memset(dummy_buf, 0, sizeof(dummy_buf));
        buf = dummy_buf;
    } else if (s->cur_offset + buf_size !=
               s->cur_frame_end[s->cur_frame_start_index]) { /* skip remainder packets */
        /* add a new packet descriptor */
            i = (s->cur_frame_start_index + 1) & (AV_PARSER_PTS_NB - 1);
            s->cur_frame_start_index = i;
            s->cur_frame_offset[i] = s->cur_offset;
            s->cur_frame_end[i] = s->cur_offset + buf_size;
            s->cur_frame_pts[i] = pts;
            s->cur_frame_dts[i] = dts;
            s->cur_frame_pos[i] = pos;
    }

    if (s->fetch_timestamp){
        s->fetch_timestamp=0;
        s->last_pts = s->pts;
        s->last_dts = s->dts;
        s->last_pos = s->pos;
        ff_fetch_timestamp(s, 0, 0);
    }

    /* WARNING: the returned index can be negative */
    index = s->parser->parser_parse(s, avctx, (const uint8_t **)poutbuf, poutbuf_size, buf, buf_size);
//av_log(NULL, AV_LOG_DEBUG, "parser: in:%"PRId64", %"PRId64", out:%"PRId64", %"PRId64", in:%d out:%d id:%d\n", pts, dts, s->last_pts, s->last_dts, buf_size, *poutbuf_size, avctx->codec_id);
    /* update the file pointer */
    if (*poutbuf_size) {
        /* fill the data for the current frame */
        s->frame_offset = s->next_frame_offset;

        /* offset of the next frame */
        s->next_frame_offset = s->cur_offset + index;
        s->fetch_timestamp=1;
    }
    if (index < 0)
        index = 0;
    s->cur_offset += index;
    return index;
}

/**
 *