Chiebot-Mirror
/
FFmpeg
mirror of https://github.com/FFmpeg/FFmpeg.git
8
0
Fork 0
Code Issues Projects Releases Wiki Activity

decode custom quant matrices.

Browse Source 
based on a patch by anonymous, with optimizations by me.

Originally committed as revision 4660 to svn://svn.ffmpeg.org/ffmpeg/trunk
pull/126/head
Loren Merritt 20 years ago
parent fe9a734c82
commit 239ea04ccf
2 changed files with 201 additions and 133 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 240
      libavcodec/h264.c
  2. 94
      libavcodec/h264data.h

240
libavcodec/h264.c
Unescape View File

@ -90,6 +90,9 @@ typedef struct SPS{
short offset_for_ref_frame[256]; //FIXME dyn aloc?
int bitstream_restriction_flag;
int num_reorder_frames;
int scaling_matrix_present;
uint8_t scaling_matrix4[6][16];
uint8_t scaling_matrix8[2][64];
}SPS;
/**
@ -111,6 +114,8 @@ typedef struct PPS{
int constrained_intra_pred; ///< constrained_intra_pred_flag
int redundant_pic_cnt_present; ///< redundant_pic_cnt_present_flag
int transform_8x8_mode; ///< transform_8x8_mode_flag
uint8_t scaling_matrix4[6][16];
uint8_t scaling_matrix8[2][64];
}PPS;
/**
@ -237,8 +242,11 @@ typedef struct H264Context{
*/
PPS pps; //FIXME move to Picture perhaps? (->no) do we need that?
uint16_t (*dequant4_coeff)[16]; // FIXME quant matrices should be per SPS or PPS
uint16_t (*dequant8_coeff)[64];
uint32_t dequant4_buffer[6][52][16];
uint32_t dequant8_buffer[2][52][64];
uint32_t (*dequant4_coeff[6])[16];
uint32_t (*dequant8_coeff[2])[64];
int dequant_coeff_pps; ///< reinit tables when pps changes
int slice_num;
uint8_t *slice_table_base;
@ -1598,8 +1606,7 @@ static int decode_rbsp_trailing(uint8_t *src){
* idct tranforms the 16 dc values and dequantize them.
* @param qp quantization parameter
*/
static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp){
const int qmul= dequant_coeff[qp][0];
static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
#define stride 16
int i;
int temp[16]; //FIXME check if this is a good idea
@ -1628,10 +1635,10 @@ static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp){
const int z2= temp[4*1+i] - temp[4*3+i];
const int z3= temp[4*1+i] + temp[4*3+i];
block[stride*0 +offset]= ((z0 + z3)*qmul + 2)>>2; //FIXME think about merging this into decode_resdual
block[stride*2 +offset]= ((z1 + z2)*qmul + 2)>>2;
block[stride*8 +offset]= ((z1 - z2)*qmul + 2)>>2;
block[stride*10+offset]= ((z0 - z3)*qmul + 2)>>2;
block[stride*0 +offset]= ((((z0 + z3)*qmul + 128 ) >> 8)); //FIXME think about merging this into decode_resdual
block[stride*2 +offset]= ((((z1 + z2)*qmul + 128 ) >> 8));
block[stride*8 +offset]= ((((z1 - z2)*qmul + 128 ) >> 8));
block[stride*10+offset]= ((((z0 - z3)*qmul + 128 ) >> 8));
}
}
@ -1678,8 +1685,7 @@ static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
#undef xStride
#undef stride
static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp){
const int qmul= dequant_coeff[qp][0];
static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
const int stride= 16*2;
const int xStride= 16;
int a,b,c,d,e;
@ -1694,10 +1700,10 @@ static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp){
b= c-d;
c= c+d;
block[stride*0 + xStride*0]= ((a+c)*qmul + 0)>>1;
block[stride*0 + xStride*1]= ((e+b)*qmul + 0)>>1;
block[stride*1 + xStride*0]= ((a-c)*qmul + 0)>>1;
block[stride*1 + xStride*1]= ((e-b)*qmul + 0)>>1;
block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
}
#if 0
@ -2921,12 +2927,70 @@ static void free_tables(H264Context *h){
av_freep(&h->mb2b_xy);
av_freep(&h->mb2b8_xy);
av_freep(&h->dequant4_coeff);
av_freep(&h->dequant8_coeff);
av_freep(&h->s.obmc_scratchpad);
}
static void init_dequant8_coeff_table(H264Context *h){
int i,q,x;
h->dequant8_coeff[0] = h->dequant8_buffer[0];
h->dequant8_coeff[1] = h->dequant8_buffer[1];
for(i=0; i<2; i++ ){
if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
h->dequant8_coeff[1] = h->dequant8_buffer[0];
break;
}
for(q=0; q<52; q++){
int shift = div6[q];
int idx = rem6[q];
for(x=0; x<64; x++)
h->dequant8_coeff[i][q][x] = ((uint32_t)dequant8_coeff_init[idx][
dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] * h->pps.scaling_matrix8[i][x]) << shift;
}
}
}
static void init_dequant4_coeff_table(H264Context *h){
int i,j,q,x;
for(i=0; i<6; i++ ){
h->dequant4_coeff[i] = h->dequant4_buffer[i];
for(j=0; j<i; j++){
if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
h->dequant4_coeff[i] = h->dequant4_buffer[j];
break;
}
}
if(j<i)
continue;
for(q=0; q<52; q++){
int shift = div6[q] + 2;
int idx = rem6[q];
for(x=0; x<16; x++)
h->dequant4_coeff[i][q][x] = ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
h->pps.scaling_matrix4[i][x]) << shift;
}
}
}
static void init_dequant_tables(H264Context *h){
int i,x;
init_dequant4_coeff_table(h);
if(h->pps.transform_8x8_mode)
init_dequant8_coeff_table(h);
if(h->sps.transform_bypass){
for(i=0; i<6; i++)
for(x=0; x<16; x++)
h->dequant4_coeff[i][0][x] = 1<<6;
if(h->pps.transform_8x8_mode)
for(i=0; i<2; i++)
for(x=0; x<64; x++)
h->dequant8_coeff[i][0][x] = 1<<6;
}
}
/**
* allocates tables.
* needs width/height
@ -2934,7 +2998,7 @@ static void free_tables(H264Context *h){
static int alloc_tables(H264Context *h){
MpegEncContext * const s = &h->s;
const int big_mb_num= s->mb_stride * (s->mb_height+1);
int x,y,q;
int x,y;
CHECKED_ALLOCZ(h->intra4x4_pred_mode, big_mb_num * 8 * sizeof(uint8_t))
@ -2967,25 +3031,6 @@ static int alloc_tables(H264Context *h){
}
}
CHECKED_ALLOCZ(h->dequant4_coeff, 52*16 * sizeof(uint16_t));
CHECKED_ALLOCZ(h->dequant8_coeff, 52*64 * sizeof(uint16_t));
memcpy(h->dequant4_coeff, dequant_coeff, 52*16 * sizeof(uint16_t));
for(q=0; q<52; q++){
int shift = div6[q];
int idx = rem6[q];
if(shift >= 2) // qp<12 are shifted during dequant
shift -= 2;
for(x=0; x<64; x++)
h->dequant8_coeff[q][x] = dequant8_coeff_init[idx][
dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] << shift;
}
if(h->sps.transform_bypass){
for(x=0; x<16; x++)
h->dequant4_coeff[0][x] = 1;
for(x=0; x<64; x++)
h->dequant8_coeff[0][x] = 1<<2;
}
s->obmc_scratchpad = NULL;
return 0;
@ -3003,6 +3048,7 @@ static void common_init(H264Context *h){
init_pred_ptrs(h);
h->dequant_coeff_pps= -1;
s->unrestricted_mv=1;
s->decode=1; //FIXME
}
@ -3349,7 +3395,7 @@ static void hl_decode_mb(H264Context *h){
h->pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
if(s->codec_id == CODEC_ID_H264){
if(!transform_bypass)
h264_luma_dc_dequant_idct_c(h->mb, s->qscale);
h264_luma_dc_dequant_idct_c(h->mb, s->qscale, h->dequant4_coeff[IS_INTRA(mb_type) ? 0:3][s->qscale][0]);
}else
svq3_luma_dc_dequant_idct_c(h->mb, s->qscale);
}
@ -3397,8 +3443,8 @@ static void hl_decode_mb(H264Context *h){
if(!(s->flags&CODEC_FLAG_GRAY)){
idct_add = transform_bypass ? s->dsp.add_pixels4 : s->dsp.h264_idct_add;
if(!transform_bypass){
chroma_dc_dequant_idct_c(h->mb + 16*16, h->chroma_qp);
chroma_dc_dequant_idct_c(h->mb + 16*16+4*16, h->chroma_qp);
chroma_dc_dequant_idct_c(h->mb + 16*16, h->chroma_qp, h->dequant4_coeff[IS_INTRA(mb_type) ? 1:4][h->chroma_qp][0]);
chroma_dc_dequant_idct_c(h->mb + 16*16+4*16, h->chroma_qp, h->dequant4_coeff[IS_INTRA(mb_type) ? 2:5][h->chroma_qp][0]);
}
if(s->codec_id == CODEC_ID_H264){
for(i=16; i<16+4; i++){
@ -4179,6 +4225,11 @@ static int decode_slice_header(H264Context *h){
return -1;
}
if(h->dequant_coeff_pps != pps_id){
h->dequant_coeff_pps = pps_id;
init_dequant_tables(h);
}
s->mb_width= h->sps.mb_width;
s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
@ -4434,7 +4485,7 @@ static inline int get_dct8x8_allowed(H264Context *h){
* @param max_coeff number of coefficients in the block
* @return <0 if an error occured
*/
static int decode_residual(H264Context *h, GetBitContext *gb, DCTELEM *block, int n, const uint8_t *scantable, const uint16_t *qmul, int max_coeff){
static int decode_residual(H264Context *h, GetBitContext *gb, DCTELEM *block, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff){
MpegEncContext * const s = &h->s;
static const int coeff_token_table_index[17]= {0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3};
int level[16];
@ -4551,7 +4602,7 @@ static int decode_residual(H264Context *h, GetBitContext *gb, DCTELEM *block, in
block[j]= level[i];
}
}else{
block[j] = level[0] * qmul[j];
block[j] = (level[0] * qmul[j] + 32)>>6;
for(i=1;i<total_coeff;i++) {
if(zeros_left <= 0)
run_before = 0;
@ -4564,8 +4615,7 @@ static int decode_residual(H264Context *h, GetBitContext *gb, DCTELEM *block, in
coeff_num -= 1 + run_before;
j= scantable[ coeff_num ];
block[j]= level[i] * qmul[j];
// printf("%d %d ", block[j], qmul[j]);
block[j]= (level[i] * qmul[j] + 32)>>6;
}
}
@ -5008,7 +5058,7 @@ decode_intra_mb:
h->chroma_qp= chroma_qp= get_chroma_qp(h->pps.chroma_qp_index_offset, s->qscale);
if(IS_INTRA16x16(mb_type)){
if( decode_residual(h, h->intra_gb_ptr, h->mb, LUMA_DC_BLOCK_INDEX, dc_scan, h->dequant4_coeff[s->qscale], 16) < 0){
if( decode_residual(h, h->intra_gb_ptr, h->mb, LUMA_DC_BLOCK_INDEX, dc_scan, h->dequant4_coeff[0][s->qscale], 16) < 0){
return -1; //FIXME continue if partitioned and other return -1 too
}
@ -5018,7 +5068,7 @@ decode_intra_mb:
for(i8x8=0; i8x8<4; i8x8++){
for(i4x4=0; i4x4<4; i4x4++){
const int index= i4x4 + 4*i8x8;
if( decode_residual(h, h->intra_gb_ptr, h->mb + 16*index, index, scan + 1, h->dequant4_coeff[s->qscale], 15) < 0 ){
if( decode_residual(h, h->intra_gb_ptr, h->mb + 16*index, index, scan + 1, h->dequant4_coeff[0][s->qscale], 15) < 0 ){
return -1;
}
}
@ -5034,21 +5084,16 @@ decode_intra_mb:
uint8_t *nnz;
for(i4x4=0; i4x4<4; i4x4++){
if( decode_residual(h, gb, buf, i4x4+4*i8x8, zigzag_scan8x8_cavlc+16*i4x4,
h->dequant8_coeff[s->qscale], 16) <0 )
h->dequant8_coeff[IS_INTRA( mb_type ) ? 0:1][s->qscale], 16) <0 )
return -1;
}
if(s->qscale < 12){
int i;
for(i=0; i<64; i++)
buf[i] = (buf[i] + 2) >> 2;
}
nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ];
nnz[0] |= nnz[1] | nnz[8] | nnz[9];
}else{
for(i4x4=0; i4x4<4; i4x4++){
const int index= i4x4 + 4*i8x8;
if( decode_residual(h, gb, h->mb + 16*index, index, scan, h->dequant4_coeff[s->qscale], 16) <0 ){
if( decode_residual(h, gb, h->mb + 16*index, index, scan, h->dequant4_coeff[IS_INTRA( mb_type ) ? 0:3][s->qscale], 16) <0 ){
return -1;
}
}
@ -5062,7 +5107,7 @@ decode_intra_mb:
if(cbp&0x30){
for(chroma_idx=0; chroma_idx<2; chroma_idx++)
if( decode_residual(h, gb, h->mb + 256 + 16*4*chroma_idx, CHROMA_DC_BLOCK_INDEX, chroma_dc_scan, h->dequant4_coeff[chroma_qp], 4) < 0){
if( decode_residual(h, gb, h->mb + 256 + 16*4*chroma_idx, CHROMA_DC_BLOCK_INDEX, chroma_dc_scan, NULL, 4) < 0){
return -1;
}
}
@ -5071,7 +5116,7 @@ decode_intra_mb:
for(chroma_idx=0; chroma_idx<2; chroma_idx++){
for(i4x4=0; i4x4<4; i4x4++){
const int index= 16 + 4*chroma_idx + i4x4;
if( decode_residual(h, gb, h->mb + 16*index, index, scan + 1, h->dequant4_coeff[chroma_qp], 15) < 0){
if( decode_residual(h, gb, h->mb + 16*index, index, scan + 1, h->dequant4_coeff[chroma_idx+1+(IS_INTRA( mb_type ) ? 0:3)][chroma_qp], 15) < 0){
return -1;
}
}
@ -5510,7 +5555,7 @@ static int inline get_cabac_cbf_ctx( H264Context *h, int cat, int idx ) {
return ctx + 4 * cat;
}
static int inline decode_cabac_residual( H264Context *h, DCTELEM *block, int cat, int n, const uint8_t *scantable, const uint16_t *qmul, int max_coeff) {
static int inline decode_cabac_residual( H264Context *h, DCTELEM *block, int cat, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff) {
const int mb_xy = h->s.mb_x + h->s.mb_y*h->s.mb_stride;
static const int significant_coeff_flag_field_offset[2] = { 105, 277 };
static const int last_significant_coeff_flag_field_offset[2] = { 166, 338 };
@ -5616,8 +5661,8 @@ static int inline decode_cabac_residual( H264Context *h, DCTELEM *block, int cat
if( get_cabac_bypass( &h->cabac ) ) block[j] = -1;
else block[j] = 1;
}else{
if( get_cabac_bypass( &h->cabac ) ) block[j] = -qmul[j];
else block[j] = qmul[j];
if( get_cabac_bypass( &h->cabac ) ) block[j] = (-qmul[j] + 32) >> 6;
else block[j] = ( qmul[j] + 32) >> 6;
}
abslevel1++;
@ -5645,8 +5690,8 @@ static int inline decode_cabac_residual( H264Context *h, DCTELEM *block, int cat
if( get_cabac_bypass( &h->cabac ) ) block[j] = -coeff_abs;
else block[j] = coeff_abs;
}else{
if( get_cabac_bypass( &h->cabac ) ) block[j] = -coeff_abs * qmul[j];
else block[j] = coeff_abs * qmul[j];
if( get_cabac_bypass( &h->cabac ) ) block[j] = (-coeff_abs * qmul[j] + 32) >> 6;
else block[j] = ( coeff_abs * qmul[j] + 32) >> 6;
}
abslevelgt1++;
@ -6078,7 +6123,7 @@ decode_intra_mb:
if( cbp&15 ) {
for( i = 0; i < 16; i++ ) {
//av_log( s->avctx, AV_LOG_ERROR, "INTRA16x16 AC:%d\n", i );
if( decode_cabac_residual(h, h->mb + 16*i, 1, i, scan + 1, h->dequant4_coeff[s->qscale], 15) < 0 )
if( decode_cabac_residual(h, h->mb + 16*i, 1, i, scan + 1, h->dequant4_coeff[0][s->qscale], 15) < 0 )
return -1;
}
} else {
@ -6090,18 +6135,13 @@ decode_intra_mb:
if( cbp & (1<<i8x8) ) {
if( IS_8x8DCT(mb_type) ) {
if( decode_cabac_residual(h, h->mb + 64*i8x8, 5, 4*i8x8,
zigzag_scan8x8, h->dequant8_coeff[s->qscale], 64) < 0 )
zigzag_scan8x8, h->dequant8_coeff[IS_INTRA( mb_type ) ? 0:1][s->qscale], 64) < 0 )
return -1;
if(s->qscale < 12){
int i;
for(i=0; i<64; i++)
h->mb[64*i8x8+i] = (h->mb[64*i8x8+i] + 2) >> 2;
}
} else
for( i4x4 = 0; i4x4 < 4; i4x4++ ) {
const int index = 4*i8x8 + i4x4;
//av_log( s->avctx, AV_LOG_ERROR, "Luma4x4: %d\n", index );
if( decode_cabac_residual(h, h->mb + 16*index, 2, index, scan, h->dequant4_coeff[s->qscale], 16) < 0 )
if( decode_cabac_residual(h, h->mb + 16*index, 2, index, scan, h->dequant4_coeff[IS_INTRA( mb_type ) ? 0:3][s->qscale], 16) < 0 )
return -1;
}
} else {
@ -6126,7 +6166,7 @@ decode_intra_mb:
for( i = 0; i < 4; i++ ) {
const int index = 16 + 4 * c + i;
//av_log( s->avctx, AV_LOG_ERROR, "INTRA C%d-AC %d\n",c, index - 16 );
if( decode_cabac_residual(h, h->mb + 16*index, 4, index - 16, scan + 1, h->dequant4_coeff[h->chroma_qp], 15) < 0)
if( decode_cabac_residual(h, h->mb + 16*index, 4, index - 16, scan + 1, h->dequant4_coeff[c+1+(IS_INTRA( mb_type ) ? 0:3)][h->chroma_qp], 15) < 0)
return -1;
}
}
@ -7006,6 +7046,52 @@ static inline int decode_vui_parameters(H264Context *h, SPS *sps){
return 0;
}
static void decode_scaling_list(H264Context *h, uint8_t *factors, int size, const uint8_t *default_list){
MpegEncContext * const s = &h->s;
int i, last = 8, next = 8;
const uint8_t *scan = size == 16 ? zigzag_scan : zigzag_scan8x8;
if(!get_bits1(&s->gb)) /* matrix not written, we use the default one */
memcpy(factors, default_list, size*sizeof(uint8_t));
else
for(i=0;i<size;i++){
if(next)
next = (last + get_se_golomb(&s->gb)) & 0xff;
if(!i && !next){ /* matrix not written, we use the default one */
memcpy(factors, default_list, size*sizeof(uint8_t));
break;
}
last = factors[scan[i]] = next ? next : last;
}
}
static void decode_scaling_matrices(H264Context *h, SPS *sps, PPS *pps, int is_sps,
uint8_t (*scaling_matrix4)[16], uint8_t (*scaling_matrix8)[64]){
MpegEncContext * const s = &h->s;
int fallback_sps = !is_sps && sps->scaling_matrix_present;
const uint8_t *fallback[4] = {
fallback_sps ? sps->scaling_matrix4[0] : default_scaling4[0],
fallback_sps ? sps->scaling_matrix4[3] : default_scaling4[1],
fallback_sps ? sps->scaling_matrix8[0] : default_scaling8[0],
fallback_sps ? sps->scaling_matrix8[1] : default_scaling8[1]
};
if(get_bits1(&s->gb)){
sps->scaling_matrix_present |= is_sps;
decode_scaling_list(h,scaling_matrix4[0],16,fallback[0]); // Intra, Y
decode_scaling_list(h,scaling_matrix4[1],16,scaling_matrix4[0]); // Intra, Cr
decode_scaling_list(h,scaling_matrix4[2],16,scaling_matrix4[1]); // Intra, Cb
decode_scaling_list(h,scaling_matrix4[3],16,fallback[1]); // Inter, Y
decode_scaling_list(h,scaling_matrix4[4],16,scaling_matrix4[3]); // Inter, Cr
decode_scaling_list(h,scaling_matrix4[5],16,scaling_matrix4[4]); // Inter, Cb
if(is_sps || pps->transform_8x8_mode){
decode_scaling_list(h,scaling_matrix8[0],64,fallback[2]); // Intra, Y
decode_scaling_list(h,scaling_matrix8[1],64,fallback[3]); // Inter, Y
}
} else if(fallback_sps) {
memcpy(scaling_matrix4, sps->scaling_matrix4, 6*16*sizeof(uint8_t));
memcpy(scaling_matrix8, sps->scaling_matrix8, 2*64*sizeof(uint8_t));
}
}
static inline int decode_seq_parameter_set(H264Context *h){
MpegEncContext * const s = &h->s;
int profile_idc, level_idc;
@ -7031,11 +7117,9 @@ static inline int decode_seq_parameter_set(H264Context *h){
get_ue_golomb(&s->gb); //bit_depth_luma_minus8
get_ue_golomb(&s->gb); //bit_depth_chroma_minus8
sps->transform_bypass = get_bits1(&s->gb);
if(get_bits1(&s->gb)){ //seq_scaling_matrix_present_flag
av_log(h->s.avctx, AV_LOG_ERROR, "custom scaling matrix not implemented\n");
return -1;
}
}
decode_scaling_matrices(h, sps, NULL, 1, sps->scaling_matrix4, sps->scaling_matrix8);
}else
sps->scaling_matrix_present = 0;
sps->log2_max_frame_num= get_ue_golomb(&s->gb) + 4;
sps->poc_type= get_ue_golomb(&s->gb);
@ -7173,12 +7257,12 @@ static inline int decode_picture_parameter_set(H264Context *h, int bit_length){
pps->constrained_intra_pred= get_bits1(&s->gb);
pps->redundant_pic_cnt_present = get_bits1(&s->gb);
memset(pps->scaling_matrix4, 16, 6*16*sizeof(uint8_t));
memset(pps->scaling_matrix8, 16, 2*64*sizeof(uint8_t));
if(get_bits_count(&s->gb) < bit_length){
pps->transform_8x8_mode= get_bits1(&s->gb);
if(get_bits1(&s->gb)){ //pic_scaling_matrix_present_flag
av_log(h->s.avctx, AV_LOG_ERROR, "custom scaling matrix not implemented\n");
return -1;
}
decode_scaling_matrices(h, &h->sps_buffer[pps->sps_id], pps, 0, pps->scaling_matrix4, pps->scaling_matrix8);
get_se_golomb(&s->gb); //second_chroma_qp_index_offset
}

94
libavcodec/h264data.h
Unescape View File

@ -457,61 +457,45 @@ static const uint8_t div6[52]={
0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8,
};
static const uint16_t dequant_coeff[52][16]={
{ 10, 13, 10, 13, 13, 16, 13, 16, 10, 13, 10, 13, 13, 16, 13, 16, },
{ 11, 14, 11, 14, 14, 18, 14, 18, 11, 14, 11, 14, 14, 18, 14, 18, },
{ 13, 16, 13, 16, 16, 20, 16, 20, 13, 16, 13, 16, 16, 20, 16, 20, },
{ 14, 18, 14, 18, 18, 23, 18, 23, 14, 18, 14, 18, 18, 23, 18, 23, },
{ 16, 20, 16, 20, 20, 25, 20, 25, 16, 20, 16, 20, 20, 25, 20, 25, },
{ 18, 23, 18, 23, 23, 29, 23, 29, 18, 23, 18, 23, 23, 29, 23, 29, },
{ 20, 26, 20, 26, 26, 32, 26, 32, 20, 26, 20, 26, 26, 32, 26, 32, },
{ 22, 28, 22, 28, 28, 36, 28, 36, 22, 28, 22, 28, 28, 36, 28, 36, },
{ 26, 32, 26, 32, 32, 40, 32, 40, 26, 32, 26, 32, 32, 40, 32, 40, },
{ 28, 36, 28, 36, 36, 46, 36, 46, 28, 36, 28, 36, 36, 46, 36, 46, },
{ 32, 40, 32, 40, 40, 50, 40, 50, 32, 40, 32, 40, 40, 50, 40, 50, },
{ 36, 46, 36, 46, 46, 58, 46, 58, 36, 46, 36, 46, 46, 58, 46, 58, },
{ 40, 52, 40, 52, 52, 64, 52, 64, 40, 52, 40, 52, 52, 64, 52, 64, },
{ 44, 56, 44, 56, 56, 72, 56, 72, 44, 56, 44, 56, 56, 72, 56, 72, },
{ 52, 64, 52, 64, 64, 80, 64, 80, 52, 64, 52, 64, 64, 80, 64, 80, },
{ 56, 72, 56, 72, 72, 92, 72, 92, 56, 72, 56, 72, 72, 92, 72, 92, },
{ 64, 80, 64, 80, 80, 100, 80, 100, 64, 80, 64, 80, 80, 100, 80, 100, },
{ 72, 92, 72, 92, 92, 116, 92, 116, 72, 92, 72, 92, 92, 116, 92, 116, },
{ 80, 104, 80, 104, 104, 128, 104, 128, 80, 104, 80, 104, 104, 128, 104, 128, },
{ 88, 112, 88, 112, 112, 144, 112, 144, 88, 112, 88, 112, 112, 144, 112, 144, },
{ 104, 128, 104, 128, 128, 160, 128, 160, 104, 128, 104, 128, 128, 160, 128, 160, },
{ 112, 144, 112, 144, 144, 184, 144, 184, 112, 144, 112, 144, 144, 184, 144, 184, },
{ 128, 160, 128, 160, 160, 200, 160, 200, 128, 160, 128, 160, 160, 200, 160, 200, },
{ 144, 184, 144, 184, 184, 232, 184, 232, 144, 184, 144, 184, 184, 232, 184, 232, },
{ 160, 208, 160, 208, 208, 256, 208, 256, 160, 208, 160, 208, 208, 256, 208, 256, },
{ 176, 224, 176, 224, 224, 288, 224, 288, 176, 224, 176, 224, 224, 288, 224, 288, },
{ 208, 256, 208, 256, 256, 320, 256, 320, 208, 256, 208, 256, 256, 320, 256, 320, },
{ 224, 288, 224, 288, 288, 368, 288, 368, 224, 288, 224, 288, 288, 368, 288, 368, },
{ 256, 320, 256, 320, 320, 400, 320, 400, 256, 320, 256, 320, 320, 400, 320, 400, },
{ 288, 368, 288, 368, 368, 464, 368, 464, 288, 368, 288, 368, 368, 464, 368, 464, },
{ 320, 416, 320, 416, 416, 512, 416, 512, 320, 416, 320, 416, 416, 512, 416, 512, },
{ 352, 448, 352, 448, 448, 576, 448, 576, 352, 448, 352, 448, 448, 576, 448, 576, },
{ 416, 512, 416, 512, 512, 640, 512, 640, 416, 512, 416, 512, 512, 640, 512, 640, },
{ 448, 576, 448, 576, 576, 736, 576, 736, 448, 576, 448, 576, 576, 736, 576, 736, },
{ 512, 640, 512, 640, 640, 800, 640, 800, 512, 640, 512, 640, 640, 800, 640, 800, },
{ 576, 736, 576, 736, 736, 928, 736, 928, 576, 736, 576, 736, 736, 928, 736, 928, },
{ 640, 832, 640, 832, 832,1024, 832,1024, 640, 832, 640, 832, 832,1024, 832,1024, },
{ 704, 896, 704, 896, 896,1152, 896,1152, 704, 896, 704, 896, 896,1152, 896,1152, },
{ 832,1024, 832,1024, 1024,1280,1024,1280, 832,1024, 832,1024, 1024,1280,1024,1280, },
{ 896,1152, 896,1152, 1152,1472,1152,1472, 896,1152, 896,1152, 1152,1472,1152,1472, },
{1024,1280,1024,1280, 1280,1600,1280,1600, 1024,1280,1024,1280, 1280,1600,1280,1600, },
{1152,1472,1152,1472, 1472,1856,1472,1856, 1152,1472,1152,1472, 1472,1856,1472,1856, },
{1280,1664,1280,1664, 1664,2048,1664,2048, 1280,1664,1280,1664, 1664,2048,1664,2048, },
{1408,1792,1408,1792, 1792,2304,1792,2304, 1408,1792,1408,1792, 1792,2304,1792,2304, },
{1664,2048,1664,2048, 2048,2560,2048,2560, 1664,2048,1664,2048, 2048,2560,2048,2560, },
{1792,2304,1792,2304, 2304,2944,2304,2944, 1792,2304,1792,2304, 2304,2944,2304,2944, },
{2048,2560,2048,2560, 2560,3200,2560,3200, 2048,2560,2048,2560, 2560,3200,2560,3200, },
{2304,2944,2304,2944, 2944,3712,2944,3712, 2304,2944,2304,2944, 2944,3712,2944,3712, },
{2560,3328,2560,3328, 3328,4096,3328,4096, 2560,3328,2560,3328, 3328,4096,3328,4096, },
{2816,3584,2816,3584, 3584,4608,3584,4608, 2816,3584,2816,3584, 3584,4608,3584,4608, },
{3328,4096,3328,4096, 4096,5120,4096,5120, 3328,4096,3328,4096, 4096,5120,4096,5120, },
{3584,4608,3584,4608, 4608,5888,4608,5888, 3584,4608,3584,4608, 4608,5888,4608,5888, },
//{4096,5120,4096,5120, 5120,6400,5120,6400, 4096,5120,4096,5120, 5120,6400,5120,6400, },
//{4608,5888,4608,5888, 5888,7424,5888,7424, 4608,5888,4608,5888, 5888,7424,5888,7424, },
static const uint8_t default_scaling4[2][16]={
{ 6,13,20,28,
13,20,28,32,
20,28,32,37,
28,32,37,42
},{
10,14,20,24,
14,20,24,27,
20,24,27,30,
24,27,30,34
}};
static const uint8_t default_scaling8[2][64]={
{ 6,10,13,16,18,23,25,27,
10,11,16,18,23,25,27,29,
13,16,18,23,25,27,29,31,
16,18,23,25,27,29,31,33,
18,23,25,27,29,31,33,36,
23,25,27,29,31,33,36,38,
25,27,29,31,33,36,38,40,
27,29,31,33,36,38,40,42
},{
9,13,15,17,19,21,22,24,
13,13,17,19,21,22,24,25,
15,17,19,21,22,24,25,27,
17,19,21,22,24,25,27,28,
19,21,22,24,25,27,28,30,
21,22,24,25,27,28,30,32,
22,24,25,27,28,30,32,33,
24,25,27,28,30,32,33,35
}};
static const int dequant4_coeff_init[6][3]={
{10,13,16},
{11,14,18},
{13,16,20},
{14,18,23},
{16,20,25},
{18,23,29},
};
static const int dequant8_coeff_init_scan[16] = {

Write Preview
Loading…
Cancel
Save