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Code Issues Releases Activity

avcodec/hevc_ps: use get_ue_golomb() for some PPS Screen Content Coding extension fields

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Also remove the _minus8 part of the name to be in line with the rest of the
decoder, and fix the storage type for pps_palette_predictor_initializer,
to support hbd values.

Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2023-04-27 16:14:14 -03:00
parent 5564ba49a1
commit df3fd3accd
2 changed files with 17 additions and 10 deletions
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21
libavcodec/hevc_ps.c
View File

@ -1538,17 +1538,24 @@ static int pps_scc_extension(GetBitContext *gb, AVCodecContext *avctx,
}
if (pps->pps_palette_predictor_initializers_present_flag = get_bits1(gb)) {
if ((pps->pps_num_palette_predictor_initializers = get_ue_golomb_long(gb)) > 0) {
pps->pps_num_palette_predictor_initializers = get_ue_golomb(gb);
if (pps->pps_num_palette_predictor_initializers > 0) {
if (pps->pps_num_palette_predictor_initializers > HEVC_MAX_PALETTE_PREDICTOR_SIZE) {
av_log(avctx, AV_LOG_ERROR,
"pps_num_palette_predictor_initializers out of range: %u\n",
pps->pps_num_palette_predictor_initializers);
return AVERROR_INVALIDDATA;
}
pps->monochrome_palette_flag = get_bits1(gb);
pps->luma_bit_depth_entry_minus8 = get_ue_golomb_long(gb);
pps->luma_bit_depth_entry = get_ue_golomb_31(gb) + 8;
if (!pps->monochrome_palette_flag)
pps->chroma_bit_depth_entry_minus8 = get_ue_golomb_long(gb);
pps->chroma_bit_depth_entry = get_ue_golomb_31(gb) + 8;
num_comps = pps->monochrome_palette_flag ? 1 : 3;
for (int comp = 0; comp < num_comps; comp++)
for (int comp = 0; comp < num_comps; comp++) {
int bit_depth = !comp ? pps->luma_bit_depth_entry : pps->chroma_bit_depth_entry;
for (int i = 0; i < pps->pps_num_palette_predictor_initializers; i++)
pps->pps_palette_predictor_initializer[comp][i] =
get_bits(gb, 8 + (!comp ? pps->luma_bit_depth_entry_minus8 :
pps->chroma_bit_depth_entry_minus8));
pps->pps_palette_predictor_initializer[comp][i] = get_bits(gb, bit_depth);
}
}
}

6
libavcodec/hevc_ps.h
View File

@ -358,9 +358,9 @@ typedef struct HEVCPPS {
uint8_t pps_palette_predictor_initializers_present_flag;
uint8_t pps_num_palette_predictor_initializers;
uint8_t monochrome_palette_flag;
uint8_t luma_bit_depth_entry_minus8;
uint8_t chroma_bit_depth_entry_minus8;
uint8_t pps_palette_predictor_initializer[3][HEVC_MAX_PALETTE_PREDICTOR_SIZE];
uint8_t luma_bit_depth_entry;
uint8_t chroma_bit_depth_entry;
uint16_t pps_palette_predictor_initializer[3][HEVC_MAX_PALETTE_PREDICTOR_SIZE];
// Inferred parameters
unsigned int *column_width; ///< ColumnWidth