RepoMirrors/ffmpeg
1
0
Fork 0
mirror of https://git.ffmpeg.org/ffmpeg.git synced 2024-12-17 21:14:47 +00:00
Code Issues Projects Releases Wiki Activity

Simplify constrained_intra_pred code in fill_caches().

Browse Source 
Originally committed as revision 14688 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2008-08-11 02:52:14 +00:00
parent d1d10e9125
commit faa7e39466
1 changed files with 10 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
libavcodec/h264.c
View File

@ -207,23 +207,24 @@ static void fill_caches(H264Context *h, int mb_type, int for_deblock){
}
if(IS_INTRA(mb_type)){
int type_mask= h->pps.constrained_intra_pred ? IS_INTRA(-1) : -1;
h->topleft_samples_available=
h->top_samples_available=
h->left_samples_available= 0xFFFF;
h->topright_samples_available= 0xEEEA;
if(!IS_INTRA(top_type) && (top_type==0 || h->pps.constrained_intra_pred)){
if(!(top_type & type_mask)){
h->topleft_samples_available= 0xB3FF;
h->top_samples_available= 0x33FF;
h->topright_samples_available= 0x26EA;
}
if(IS_INTERLACED(mb_type) != IS_INTERLACED(left_type[0])){
if(IS_INTERLACED(mb_type)){
if(!IS_INTRA(left_type[0]) && (left_type[0]==0 || h->pps.constrained_intra_pred)){
if(!(left_type[0] & type_mask)){
h->topleft_samples_available&= 0xDFFF;
h->left_samples_available&= 0x5FFF;
}
if(!IS_INTRA(left_type[1]) && (left_type[1]==0 || h->pps.constrained_intra_pred)){
if(!(left_type[1] & type_mask)){
h->topleft_samples_available&= 0xFF5F;
h->left_samples_available&= 0xFF5F;
}
@ -231,22 +232,22 @@ static void fill_caches(H264Context *h, int mb_type, int for_deblock){
int left_typei = h->slice_table[left_xy[0] + s->mb_stride ] == h->slice_num
? s->current_picture.mb_type[left_xy[0] + s->mb_stride] : 0;
assert(left_xy[0] == left_xy[1]);
if(!(IS_INTRA(left_typei) && IS_INTRA(left_type[0])) && (left_typei==0 || h->pps.constrained_intra_pred)){
if(!((left_typei & type_mask) && (left_type[0] & type_mask))){
h->topleft_samples_available&= 0xDF5F;
h->left_samples_available&= 0x5F5F;
}
}
}else{
if(!IS_INTRA(left_type[0]) && (left_type[0]==0 || h->pps.constrained_intra_pred)){
if(!(left_type[0] & type_mask)){
h->topleft_samples_available&= 0xDF5F;
h->left_samples_available&= 0x5F5F;
}
}
if(!IS_INTRA(topleft_type) && (topleft_type==0 || h->pps.constrained_intra_pred))
if(!(topleft_type & type_mask))
h->topleft_samples_available&= 0x7FFF;
if(!IS_INTRA(topright_type) && (topright_type==0 || h->pps.constrained_intra_pred))
if(!(topright_type & type_mask))
h->topright_samples_available&= 0xFBFF;
if(IS_INTRA4x4(mb_type)){
@ -257,7 +258,7 @@ static void fill_caches(H264Context *h, int mb_type, int for_deblock){
h->intra4x4_pred_mode_cache[7+8*0]= h->intra4x4_pred_mode[top_xy][3];
}else{
int pred;
if(!top_type || (IS_INTER(top_type) && h->pps.constrained_intra_pred))
if(!(top_type & type_mask))
pred= -1;
else{
pred= 2;
@ -273,7 +274,7 @@ static void fill_caches(H264Context *h, int mb_type, int for_deblock){
h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[1+2*i]];
}else{
int pred;
if(!left_type[i] || (IS_INTER(left_type[i]) && h->pps.constrained_intra_pred))
if(!(left_type[i] & type_mask))
pred= -1;
else{
pred= 2;