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Merge commit 'a8cbe5a0ccebf60a8a8b0aba5d5716dd54c1595c'

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* commit 'a8cbe5a0ccebf60a8a8b0aba5d5716dd54c1595c':
  h264_ps: export actual height in MBs as SPS.mb_height

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
This commit is contained in:
Hendrik Leppkes 2016-11-17 15:17:21 +01:00
commit cca4fd4778
3 changed files with 16 additions and 8 deletions
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13
libavcodec/h264_ps.c
View File

@ -467,15 +467,22 @@ int ff_h264_decode_seq_parameter_set(GetBitContext *gb, AVCodecContext *avctx,
sps->mb_height = get_ue_golomb(gb) + 1;
sps->frame_mbs_only_flag = get_bits1(gb);
if (sps->mb_height >= INT_MAX / 2) {
av_log(avctx, AV_LOG_ERROR, "height overflow\n");
goto fail;
}
sps->mb_height *= 2 - sps->frame_mbs_only_flag;
if (!sps->frame_mbs_only_flag)
sps->mb_aff = get_bits1(gb);
else
sps->mb_aff = 0;
if ((unsigned)sps->mb_width >= INT_MAX / 16 ||
(unsigned)sps->mb_height >= INT_MAX / (16 * (2 - sps->frame_mbs_only_flag)) ||
(unsigned)sps->mb_height >= INT_MAX / 16 ||
av_image_check_size(16 * sps->mb_width,
16 * sps->mb_height * (2 - sps->frame_mbs_only_flag), 0, avctx)) {
16 * sps->mb_height, 0, avctx)) {
av_log(avctx, AV_LOG_ERROR, "mb_width/height overflow\n");
goto fail;
}
@ -494,7 +501,7 @@ int ff_h264_decode_seq_parameter_set(GetBitContext *gb, AVCodecContext *avctx,
unsigned int crop_top = get_ue_golomb(gb);
unsigned int crop_bottom = get_ue_golomb(gb);
int width = 16 * sps->mb_width;
int height = 16 * sps->mb_height * (2 - sps->frame_mbs_only_flag);
int height = 16 * sps->mb_height;
if (avctx->flags2 & AV_CODEC_FLAG2_IGNORE_CROP) {
av_log(avctx, AV_LOG_DEBUG, "discarding sps cropping, original "

3
libavcodec/h264_ps.h
View File

@ -56,7 +56,8 @@ typedef struct SPS {
int ref_frame_count; ///< num_ref_frames
int gaps_in_frame_num_allowed_flag;
int mb_width; ///< pic_width_in_mbs_minus1 + 1
int mb_height; ///< pic_height_in_map_units_minus1 + 1
///< (pic_height_in_map_units_minus1 + 1) * (2 - frame_mbs_only_flag)
int mb_height;
int frame_mbs_only_flag;
int mb_aff; ///< mb_adaptive_frame_field_flag
int direct_8x8_inference_flag;

8
libavcodec/h264_slice.c
View File

@ -1032,7 +1032,7 @@ static int h264_init_ps(H264Context *h, const H264SliceContext *sl, int first_sl
h->ps.sps = (const SPS*)h->ps.sps_ref->data;
if (h->mb_width != h->ps.sps->mb_width ||
h->mb_height != h->ps.sps->mb_height * (2 - h->ps.sps->frame_mbs_only_flag) ||
h->mb_height != h->ps.sps->mb_height ||
h->cur_bit_depth_luma != h->ps.sps->bit_depth_luma ||
h->cur_chroma_format_idc != h->ps.sps->chroma_format_idc
)
@ -1046,11 +1046,11 @@ static int h264_init_ps(H264Context *h, const H264SliceContext *sl, int first_sl
must_reinit = (h->context_initialized &&
( 16*sps->mb_width != h->avctx->coded_width
|| 16*sps->mb_height * (2 - sps->frame_mbs_only_flag) != h->avctx->coded_height
|| 16*sps->mb_height != h->avctx->coded_height
|| h->cur_bit_depth_luma != sps->bit_depth_luma
|| h->cur_chroma_format_idc != sps->chroma_format_idc
|| h->mb_width != sps->mb_width
|| h->mb_height != sps->mb_height * (2 - sps->frame_mbs_only_flag)
|| h->mb_height != sps->mb_height
));
if (h->avctx->pix_fmt == AV_PIX_FMT_NONE
|| (non_j_pixfmt(h->avctx->pix_fmt) != non_j_pixfmt(get_pixel_format(h, 0))))
@ -1065,7 +1065,7 @@ static int h264_init_ps(H264Context *h, const H264SliceContext *sl, int first_sl
h->avctx->refs = sps->ref_frame_count;
h->mb_width = sps->mb_width;
h->mb_height = sps->mb_height * (2 - sps->frame_mbs_only_flag);
h->mb_height = sps->mb_height;
h->mb_num = h->mb_width * h->mb_height;
h->mb_stride = h->mb_width + 1;