next= ff_mpeg1_find_frame_end(pc, buf, buf_size);  if (ff_combine_frame(pc, next, (uint8_t **)&buf, &buf_size) < 0) { *poutbuf = NULL; *poutbuf_size = 0; return buf_size;
if(s->flags & PARSER_FLAG_COMPLETE_FRAMES){ next= buf_size; }else{ next= ff_mpeg1_find_frame_end(pc, buf, buf_size);  if (ff_combine_frame(pc, next, (uint8_t **)&buf, &buf_size) < 0) { *poutbuf = NULL; *poutbuf_size = 0; return buf_size; }
static int mpegvideo_parse(AVCodecParserContext *s,                           AVCodecContext *avctx,                           uint8_t **poutbuf, int *poutbuf_size,                            const uint8_t *buf, int buf_size){    ParseContext1 *pc1 = s->priv_data;    ParseContext *pc= &pc1->pc;    int next;        next= ff_mpeg1_find_frame_end(pc, buf, buf_size);        if (ff_combine_frame(pc, next, (uint8_t **)&buf, &buf_size) < 0) {        *poutbuf = NULL;        *poutbuf_size = 0;        return buf_size;    }    /* we have a full frame : we just parse the first few MPEG headers       to have the full timing information. The time take by this       function should be negligible for uncorrupted streams */    mpegvideo_extract_headers(s, avctx, buf, buf_size);#if 0    printf("pict_type=%d frame_rate=%0.3f repeat_pict=%d\n",            s->pict_type, (double)avctx->time_base.den / avctx->time_base.num, s->repeat_pict);#endif    *poutbuf = (uint8_t *)buf;    *poutbuf_size = buf_size;    return next;}