diff options
| author | Michael Niedermayer <michaelni@gmx.at> | 2014-02-21 03:19:07 +0400 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2014-02-21 03:20:55 +0400 |
| commit | de7b50e9cde715b8ccfef2c83def08b4e8581432 (patch) | |
| tree | 08bd0f618f53712dfcef1ad9df709ec80ea7ae7d /libavcodec/h264.c | |
| parent | f2387152bcdc4b3a4e650f8b00600796aa0504de (diff) | |
| parent | f777504f640260337974848c7d5d7a3f064bbb45 (diff) | |
Merge remote-tracking branch 'qatar/master'
* qatar/master:
h264: Lower bound check for slice offsets
Conflicts:
libavcodec/h264.c
See: 91253839e14cce9793ee93f184cef609ca8195d5
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/h264.c')
| -rw-r--r-- | libavcodec/h264.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/libavcodec/h264.c b/libavcodec/h264.c index b9b82c8825..0a272261a4 100644 --- a/libavcodec/h264.c +++ b/libavcodec/h264.c @@ -4002,8 +4002,8 @@ static int decode_slice_header(H264Context *h, H264Context *h0) get_se_golomb(&h->gb); /* slice_qs_delta */ h->deblocking_filter = 1; - h->slice_alpha_c0_offset = 52; - h->slice_beta_offset = 52; + h->slice_alpha_c0_offset = 0; + h->slice_beta_offset = 0; if (h->pps.deblocking_filter_parameters_present) { tmp = get_ue_golomb_31(&h->gb); if (tmp > 2) { @@ -4016,10 +4016,12 @@ static int decode_slice_header(H264Context *h, H264Context *h0) h->deblocking_filter ^= 1; // 1<->0 if (h->deblocking_filter) { - h->slice_alpha_c0_offset += get_se_golomb(&h->gb) << 1; - h->slice_beta_offset += get_se_golomb(&h->gb) << 1; - if (h->slice_alpha_c0_offset < 52 - 12 || h->slice_alpha_c0_offset > 52 + 12 || - h->slice_beta_offset < 52 - 12 || h->slice_beta_offset > 52 + 12) { + h->slice_alpha_c0_offset = get_se_golomb(&h->gb) * 2; + h->slice_beta_offset = get_se_golomb(&h->gb) * 2; + if (h->slice_alpha_c0_offset > 12 || + h->slice_alpha_c0_offset < -12 || + h->slice_beta_offset > 12 || + h->slice_beta_offset < -12) { av_log(h->avctx, AV_LOG_ERROR, "deblocking filter parameters %d %d out of range\n", h->slice_alpha_c0_offset, h->slice_beta_offset); @@ -4056,7 +4058,7 @@ static int decode_slice_header(H264Context *h, H264Context *h0) } } } - h->qp_thresh = 15 + 52 - + h->qp_thresh = 15 + FFMIN(h->slice_alpha_c0_offset, h->slice_beta_offset) - FFMAX3(0, h->pps.chroma_qp_index_offset[0], @@ -4132,7 +4134,7 @@ static int decode_slice_header(H264Context *h, H264Context *h0) h->ref_count[0], h->ref_count[1], h->qscale, h->deblocking_filter, - h->slice_alpha_c0_offset / 2 - 26, h->slice_beta_offset / 2 - 26, + h->slice_alpha_c0_offset, h->slice_beta_offset, h->use_weight, h->use_weight == 1 && h->use_weight_chroma ? "c" : "", h->slice_type == AV_PICTURE_TYPE_B ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""); |