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Code Issues Releases Activity

Support the new lossless mode.

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Originally committed as revision 16171 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2008-12-16 20:09:09 +00:00
parent 479044cea5
commit 41e4055b63
1 changed files with 23 additions and 4 deletions
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27
libavcodec/h264.c
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@ -2366,7 +2366,8 @@ static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
int linesize, uvlinesize /*dct_offset*/;
int i;
int *block_offset = &h->block_offset[0];
const int transform_bypass = (s->qscale == 0 && h->sps.transform_bypass), is_h264 = (simple || s->codec_id == CODEC_ID_H264);
const int transform_bypass = !simple && (s->qscale == 0 && h->sps.transform_bypass);
const int is_h264 = simple || s->codec_id == CODEC_ID_H264;
void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
@ -2444,6 +2445,9 @@ static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
for(i=0; i<16; i+=4){
uint8_t * const ptr= dest_y + block_offset[i];
const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
h->hpc.pred8x8l_add[dir](ptr, h->mb + i*16, linesize);
}else{
const int nnz = h->non_zero_count_cache[ scan8[i] ];
h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
(h->topright_samples_available<<i)&0x4000, linesize);
@ -2454,13 +2458,17 @@ static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
idct_add(ptr, h->mb + i*16, linesize);
}
}
}
}else
for(i=0; i<16; i++){
uint8_t * const ptr= dest_y + block_offset[i];
uint8_t *topright;
const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
int nnz, tr;
if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
h->hpc.pred4x4_add[dir](ptr, h->mb + i*16, linesize);
}else{
uint8_t *topright;
int nnz, tr;
if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
const int topright_avail= (h->topright_samples_available<<i)&0x8000;
assert(mb_y || linesize <= block_offset[i]);
@ -2485,6 +2493,7 @@ static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
}
}
}
}
}else{
h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
if(is_h264){
@ -2506,12 +2515,16 @@ static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
if(!IS_INTRA4x4(mb_type)){
if(is_h264){
if(IS_INTRA16x16(mb_type)){
if(transform_bypass && h->sps.profile_idc==244 && (h->intra16x16_pred_mode==VERT_PRED8x8 || h->intra16x16_pred_mode==HOR_PRED8x8)){
h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset, h->mb, linesize);
}else{
for(i=0; i<16; i++){
if(h->non_zero_count_cache[ scan8[i] ])
idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
else if(h->mb[i*16])
idct_dc_add(dest_y + block_offset[i], h->mb + i*16, linesize);
}
}
}else{
const int di = IS_8x8DCT(mb_type) ? 4 : 1;
for(i=0; i<16; i+=di){
@ -2545,12 +2558,17 @@ static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
chroma_dc_dequant_idct_c(h->mb + 16*16+4*16, h->chroma_qp[1], h->dequant4_coeff[IS_INTRA(mb_type) ? 2:5][h->chroma_qp[1]][0]);
}
if(is_h264){
if(transform_bypass && IS_INTRA(mb_type) && h->sps.profile_idc==244 && (h->chroma_pred_mode==VERT_PRED8x8 || h->chroma_pred_mode==HOR_PRED8x8)){
h->hpc.pred8x8_add[h->chroma_pred_mode](dest[0], block_offset + 16, h->mb + 16*16, uvlinesize);
h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1], block_offset + 20, h->mb + 20*16, uvlinesize);
}else{
for(i=16; i<16+8; i++){
if(h->non_zero_count_cache[ scan8[i] ])
idct_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
else if(h->mb[i*16])
idct_dc_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
}
}
}else{
for(i=16; i<16+8; i++){
if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
@ -2593,7 +2611,8 @@ static void hl_decode_mb(H264Context *h){
const int mb_xy= h->mb_xy;
const int mb_type= s->current_picture.mb_type[mb_xy];
int is_complex = FRAME_MBAFF || MB_FIELD || IS_INTRA_PCM(mb_type) || s->codec_id != CODEC_ID_H264 ||
(ENABLE_GRAY && (s->flags&CODEC_FLAG_GRAY)) || (ENABLE_H264_ENCODER && s->encoding) || ENABLE_SMALL;
(ENABLE_GRAY && (s->flags&CODEC_FLAG_GRAY)) || (ENABLE_H264_ENCODER && s->encoding) || ENABLE_SMALL ||
s->qscale == 0;
if(ENABLE_H264_ENCODER && !s->decode)
return;