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decode custom quant matrices.

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

Originally committed as revision 4660 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Loren Merritt 2005-10-25 01:17:20 +00:00
parent fe9a734c82
commit 239ea04ccf
2 changed files with 201 additions and 133 deletions
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240
libavcodec/h264.c
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@ -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
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] = {