diff options
Diffstat (limited to 'libavcodec/h264_cavlc.c')
| -rw-r--r-- | libavcodec/h264_cavlc.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/libavcodec/h264_cavlc.c b/libavcodec/h264_cavlc.c index 29d8966a61..41bafee582 100644 --- a/libavcodec/h264_cavlc.c +++ b/libavcodec/h264_cavlc.c @@ -921,6 +921,7 @@ decode_intra_mb: int dquant; GetBitContext *gb= IS_INTRA(mb_type) ? h->intra_gb_ptr : h->inter_gb_ptr; const uint8_t *scan, *scan8x8; + const int max_qp = 51 + 6*(h->sps.bit_depth_luma-8); if(IS_INTERLACED(mb_type)){ scan8x8= s->qscale ? h->field_scan8x8_cavlc : h->field_scan8x8_cavlc_q0; @@ -934,10 +935,10 @@ decode_intra_mb: s->qscale += dquant; - if(((unsigned)s->qscale) > 51){ - if(s->qscale<0) s->qscale+= 52; - else s->qscale-= 52; - if(((unsigned)s->qscale) > 51){ + if(((unsigned)s->qscale) > max_qp){ + if(s->qscale<0) s->qscale+= max_qp+1; + else s->qscale-= max_qp+1; + if(((unsigned)s->qscale) > max_qp){ av_log(h->s.avctx, AV_LOG_ERROR, "dquant out of range (%d) at %d %d\n", dquant, s->mb_x, s->mb_y); return -1; } |