generic-library/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

blinking blocks around thin vertical lines and dots bugfix

Browse Source 
Originally committed as revision 1988 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2003-06-26 11:31:34 +00:00
parent e3ee328330
commit cb482d2511
2 changed files with 125 additions and 84 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

72
libavcodec/libpostproc/postprocess.c
View File

@ -243,11 +243,79 @@ static inline int isVertDC_C(uint8_t src[], int stride, PPContext *c){
static inline int isHorizMinMaxOk(uint8_t src[], int stride, int QP)
{
if(abs(src[0] - src[7]) > 2*QP) return 0;
int i;
#if 1
for(i=0; i<2; i++){
if((unsigned)(src[0] - src[5] + 2*QP) > 4*QP) return 0;
src += stride;
if((unsigned)(src[2] - src[7] + 2*QP) > 4*QP) return 0;
src += stride;
if((unsigned)(src[4] - src[1] + 2*QP) > 4*QP) return 0;
src += stride;
if((unsigned)(src[6] - src[3] + 2*QP) > 4*QP) return 0;
src += stride;
}
#else
for(i=0; i<8; i++){
if((unsigned)(src[0] - src[7] + 2*QP) > 4*QP) return 0;
src += stride;
}
#endif
return 1;
}
static inline int isVertMinMaxOk_C(uint8_t src[], int stride, int QP)
{
#if 1
#if 1
int x;
src+= stride*4;
for(x=0; x<BLOCK_SIZE; x+=4)
{
if((unsigned)(src[ x + 0*stride] - src[ x + 5*stride] + 2*QP) > 4*QP) return 0;
if((unsigned)(src[1+x + 2*stride] - src[1+x + 7*stride] + 2*QP) > 4*QP) return 0;
if((unsigned)(src[2+x + 4*stride] - src[2+x + 1*stride] + 2*QP) > 4*QP) return 0;
if((unsigned)(src[3+x + 6*stride] - src[3+x + 3*stride] + 2*QP) > 4*QP) return 0;
}
#else
int x;
src+= stride*3;
for(x=0; x<BLOCK_SIZE; x++)
{
if((unsigned)(src[x + stride] - src[x + (stride<<3)] + 2*QP) > 4*QP) return 0;
}
#endif
return 1;
#else
int x;
src+= stride*4;
for(x=0; x<BLOCK_SIZE; x++)
{
int min=255;
int max=0;
int y;
for(y=0; y<8; y++){
int v= src[x + y*stride];
if(v>max) max=v;
if(v<min) min=v;
}
if(max-min > 2*QP) return 0;
}
return 1;
#endif
}
static inline int vertClassify_C(uint8_t src[], int stride, PPContext *c){
if( isVertDC_C(src, stride, c) ){
if( isVertMinMaxOk_C(src, stride, c->QP) )
return 1;
else
return 0;
}else{
return 2;
}
}
static inline void doHorizDefFilter(uint8_t dst[], int stride, int QP)
{
int y;

137
libavcodec/libpostproc/postprocess_template.c
View File

@ -49,65 +49,81 @@
"paddb " #a ", " #b " \n\t"
#endif
//FIXME? |255-0| = 1 (shouldnt be a problem ...)
#ifdef HAVE_MMX
/**
* Check if the middle 8x8 Block in the given 8x16 block is flat
*/
static inline int RENAME(isVertDC)(uint8_t src[], int stride, PPContext *c){
int numEq= 0;
static inline int RENAME(vertClassify)(uint8_t src[], int stride, PPContext *c){
int numEq= 0, dcOk;
src+= stride*4; // src points to begin of the 8x8 Block
asm volatile(
"leal (%1, %2), %%eax \n\t"
"leal (%2, %3), %%eax \n\t"
// 0 1 2 3 4 5 6 7 8 9
// %1 eax eax+%2 eax+2%2 %1+4%2 ecx ecx+%2 ecx+2%2 %1+8%2 ecx+4%2
"movq %3, %%mm7 \n\t"
"movq %4, %%mm6 \n\t"
"movq %4, %%mm7 \n\t"
"movq %5, %%mm6 \n\t"
"movq (%1), %%mm0 \n\t"
"movq (%2), %%mm0 \n\t"
"movq (%%eax), %%mm1 \n\t"
"movq %%mm0, %%mm3 \n\t"
"movq %%mm0, %%mm4 \n\t"
PMAXUB(%%mm1, %%mm4)
PMINUB(%%mm1, %%mm3, %%mm5)
"psubb %%mm1, %%mm0 \n\t" // mm0 = differnece
"paddb %%mm7, %%mm0 \n\t"
"pcmpgtb %%mm6, %%mm0 \n\t"
"movq (%%eax,%2), %%mm2 \n\t"
"movq (%%eax,%3), %%mm2 \n\t"
PMAXUB(%%mm2, %%mm4)
PMINUB(%%mm2, %%mm3, %%mm5)
"psubb %%mm2, %%mm1 \n\t"
"paddb %%mm7, %%mm1 \n\t"
"pcmpgtb %%mm6, %%mm1 \n\t"
"paddb %%mm1, %%mm0 \n\t"
"movq (%%eax, %2, 2), %%mm1 \n\t"
"movq (%%eax, %3, 2), %%mm1 \n\t"
PMAXUB(%%mm1, %%mm4)
PMINUB(%%mm1, %%mm3, %%mm5)
"psubb %%mm1, %%mm2 \n\t"
"paddb %%mm7, %%mm2 \n\t"
"pcmpgtb %%mm6, %%mm2 \n\t"
"paddb %%mm2, %%mm0 \n\t"
"leal (%%eax, %2, 4), %%eax \n\t"
"leal (%%eax, %3, 4), %%eax \n\t"
"movq (%1, %2, 4), %%mm2 \n\t"
"movq (%2, %3, 4), %%mm2 \n\t"
PMAXUB(%%mm2, %%mm4)
PMINUB(%%mm2, %%mm3, %%mm5)
"psubb %%mm2, %%mm1 \n\t"
"paddb %%mm7, %%mm1 \n\t"
"pcmpgtb %%mm6, %%mm1 \n\t"
"paddb %%mm1, %%mm0 \n\t"
"movq (%%eax), %%mm1 \n\t"
PMAXUB(%%mm1, %%mm4)
PMINUB(%%mm1, %%mm3, %%mm5)
"psubb %%mm1, %%mm2 \n\t"
"paddb %%mm7, %%mm2 \n\t"
"pcmpgtb %%mm6, %%mm2 \n\t"
"paddb %%mm2, %%mm0 \n\t"
"movq (%%eax, %2), %%mm2 \n\t"
"movq (%%eax, %3), %%mm2 \n\t"
PMAXUB(%%mm2, %%mm4)
PMINUB(%%mm2, %%mm3, %%mm5)
"psubb %%mm2, %%mm1 \n\t"
"paddb %%mm7, %%mm1 \n\t"
"pcmpgtb %%mm6, %%mm1 \n\t"
"paddb %%mm1, %%mm0 \n\t"
"movq (%%eax, %2, 2), %%mm1 \n\t"
"movq (%%eax, %3, 2), %%mm1 \n\t"
PMAXUB(%%mm1, %%mm4)
PMINUB(%%mm1, %%mm3, %%mm5)
"psubb %%mm1, %%mm2 \n\t"
"paddb %%mm7, %%mm2 \n\t"
"pcmpgtb %%mm6, %%mm2 \n\t"
"paddb %%mm2, %%mm0 \n\t"
"psubusb %%mm3, %%mm4 \n\t"
" \n\t"
#ifdef HAVE_MMX2
@ -124,70 +140,28 @@ asm volatile(
"psrlq $32, %%mm0 \n\t"
"paddb %%mm1, %%mm0 \n\t"
#endif
"movq %6, %%mm7 \n\t" // QP,..., QP
"paddusb %%mm7, %%mm7 \n\t" // 2QP ... 2QP
"psubusb %%mm7, %%mm4 \n\t" // Diff <= 2QP -> 0
"packssdw %%mm4, %%mm4 \n\t"
"movd %%mm0, %0 \n\t"
: "=r" (numEq)
: "r" (src), "r" (stride), "m" (c->mmxDcOffset[c->nonBQP]), "m" (c->mmxDcThreshold[c->nonBQP])
"movd %%mm4, %1 \n\t"
: "=r" (numEq), "=r" (dcOk)
: "r" (src), "r" (stride), "m" (c->mmxDcOffset[c->nonBQP]), "m" (c->mmxDcThreshold[c->nonBQP]), "m" (c->pQPb)
: "%eax"
);
numEq= (-numEq) &0xFF;
return numEq > c->ppMode.flatnessThreshold;
if(numEq > c->ppMode.flatnessThreshold){
if(dcOk) return 0;
else return 1;
}else{
return 2;
}
}
#endif
static inline int RENAME(isVertMinMaxOk)(uint8_t src[], int stride, PPContext *c)
{
#ifdef HAVE_MMX
int isOk;
src+= stride*3;
asm volatile(
"movq (%1, %2), %%mm0 \n\t"
"movq (%1, %2, 8), %%mm1 \n\t"
"movq %%mm0, %%mm2 \n\t"
"psubusb %%mm1, %%mm0 \n\t"
"psubusb %%mm2, %%mm1 \n\t"
"por %%mm1, %%mm0 \n\t" // ABS Diff
"movq %3, %%mm7 \n\t" // QP,..., QP
"paddusb %%mm7, %%mm7 \n\t" // 2QP ... 2QP
"psubusb %%mm7, %%mm0 \n\t" // Diff <= 2QP -> 0
"packssdw %%mm0, %%mm0 \n\t"
"movd %%mm0, %0 \n\t"
: "=r" (isOk)
: "r" (src), "r" (stride), "m" (c->pQPb)
);
return isOk==0;
#else
#if 1
int x;
const int QP= c->QP;
src+= stride*3;
for(x=0; x<BLOCK_SIZE; x++)
{
if((unsigned)(src[x + stride] - src[x + (stride<<3)] + 2*QP) > 4*QP) return 0;
}
return 1;
#else
int x;
const int QP= c->QP;
src+= stride*4;
for(x=0; x<BLOCK_SIZE; x++)
{
int min=255;
int max=0;
int y;
for(y=0; y<8; y++){
int v= src[x + y*stride];
if(v>max) max=v;
if(v<min) min=v;
}
if(max-min > 2*QP) return 0;
}
return 1;
#endif
#endif
}
/**
* Do a vertical low pass filter on the 8x16 block (only write to the 8x8 block in the middle)
* using the 9-Tap Filter (1,1,2,2,4,2,2,1,1)/16
@ -3119,12 +3093,11 @@ static void RENAME(postProcess)(uint8_t src[], int srcStride, uint8_t dst[], int
RENAME(vertX1Filter)(dstBlock, stride, &c);
else if(mode & V_DEBLOCK)
{
if( RENAME(isVertDC)(dstBlock, stride, &c))
{
if(RENAME(isVertMinMaxOk)(dstBlock, stride, &c))
RENAME(doVertLowPass)(dstBlock, stride, &c);
}
else
const int t= RENAME(vertClassify)(dstBlock, stride, &c);
if(t==1)
RENAME(doVertLowPass)(dstBlock, stride, &c);
else if(t==2)
RENAME(doVertDefFilter)(dstBlock, stride, &c);
}
}
@ -3140,12 +3113,12 @@ static void RENAME(postProcess)(uint8_t src[], int srcStride, uint8_t dst[], int
RENAME(vertX1Filter)(tempBlock1, 16, &c);
else if(mode & H_DEBLOCK)
{
if( RENAME(isVertDC)(tempBlock1, 16, &c))
{
if(RENAME(isVertMinMaxOk)(tempBlock1, 16, &c))
RENAME(doVertLowPass)(tempBlock1, 16, &c);
}
else
//START_TIMER
const int t= RENAME(vertClassify)(tempBlock1, 16, &c);
//STOP_TIMER("dc & minmax")
if(t==1)
RENAME(doVertLowPass)(tempBlock1, 16, &c);
else if(t==2)
RENAME(doVertDefFilter)(tempBlock1, 16, &c);
}