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avformat/hevc: store parameter set and layer IDs in HVCCNALUnit

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Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2024-06-15 14:24:29 -03:00
parent 361b01329f
commit cee43e512d
1 changed files with 16 additions and 10 deletions
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26
libavformat/hevc.c
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@ -45,6 +45,8 @@ enum {
#define FLAG_IS_NALFF (1 << 1)
typedef struct HVCCNALUnit {
uint8_t nuh_layer_id;
uint8_t parameter_set_id;
uint16_t nalUnitLength;
const uint8_t *nalUnit;
} HVCCNALUnit;
@ -378,17 +380,17 @@ static void skip_sub_layer_ordering_info(GetBitContext *gb)
get_ue_golomb_long(gb); // max_latency_increase_plus1
}
static int hvcc_parse_vps(GetBitContext *gb,
static int hvcc_parse_vps(GetBitContext *gb, HVCCNALUnit *nal,
HEVCDecoderConfigurationRecord *hvcc)
{
unsigned int vps_max_sub_layers_minus1;
nal->parameter_set_id = get_bits(gb, 4);
/*
* vps_video_parameter_set_id u(4)
* vps_reserved_three_2bits u(2)
* vps_max_layers_minus1 u(6)
*/
skip_bits(gb, 12);
skip_bits(gb, 8);
vps_max_sub_layers_minus1 = get_bits(gb, 3);
@ -501,7 +503,7 @@ static int parse_rps(GetBitContext *gb, unsigned int rps_idx,
return 0;
}
static int hvcc_parse_sps(GetBitContext *gb,
static int hvcc_parse_sps(GetBitContext *gb, HVCCNALUnit *nal,
HEVCDecoderConfigurationRecord *hvcc)
{
unsigned int i, sps_max_sub_layers_minus1, log2_max_pic_order_cnt_lsb_minus4;
@ -526,7 +528,7 @@ static int hvcc_parse_sps(GetBitContext *gb,
hvcc_parse_ptl(gb, hvcc, sps_max_sub_layers_minus1);
get_ue_golomb_long(gb); // sps_seq_parameter_set_id
nal->parameter_set_id = get_ue_golomb_long(gb);
hvcc->chromaFormat = get_ue_golomb_long(gb);
@ -605,12 +607,12 @@ static int hvcc_parse_sps(GetBitContext *gb,
return 0;
}
static int hvcc_parse_pps(GetBitContext *gb,
static int hvcc_parse_pps(GetBitContext *gb, HVCCNALUnit *nal,
HEVCDecoderConfigurationRecord *hvcc)
{
uint8_t tiles_enabled_flag, entropy_coding_sync_enabled_flag;
get_ue_golomb_long(gb); // pps_pic_parameter_set_id
nal->parameter_set_id = get_ue_golomb_long(gb); // pps_pic_parameter_set_id
get_ue_golomb_long(gb); // pps_seq_parameter_set_id
/*
@ -703,6 +705,7 @@ static int hvcc_add_nal_unit(const uint8_t *nal_buf, uint32_t nal_size,
int is_nalff = !!(flags & FLAG_IS_NALFF);
int ps_array_completeness = !!(flags & FLAG_ARRAY_COMPLETENESS);
HVCCNALUnitArray *const array = &hvcc->arrays[array_idx];
HVCCNALUnit *nal;
GetBitContext gbc;
uint8_t nal_type, nuh_layer_id;
uint8_t *rbsp_buf;
@ -745,16 +748,19 @@ static int hvcc_add_nal_unit(const uint8_t *nal_buf, uint32_t nal_size,
array->array_completeness = ps_array_completeness;
}
nal = &array->nal[array->numNalus-1];
nal->nuh_layer_id = nuh_layer_id;
/* Don't parse parameter sets. We already have the needed information*/
if (is_nalff)
goto end;
if (nal_type == HEVC_NAL_VPS)
ret = hvcc_parse_vps(&gbc, hvcc);
ret = hvcc_parse_vps(&gbc, nal, hvcc);
else if (nal_type == HEVC_NAL_SPS)
ret = hvcc_parse_sps(&gbc, hvcc);
ret = hvcc_parse_sps(&gbc, nal, hvcc);
else if (nal_type == HEVC_NAL_PPS)
ret = hvcc_parse_pps(&gbc, hvcc);
ret = hvcc_parse_pps(&gbc, nal, hvcc);
if (ret < 0)
goto end;