From 12eebd26ae209fe8eec06011f06b1f8a21f4ba11 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Thu, 27 May 2004 15:57:20 +0000 Subject: accurate/slow (per line instead of per block) deblock filter spport which is identical to what is recommanded in the mpeg4 spec Originally committed as revision 3163 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/libpostproc/postprocess.c | 128 ++++++++++++++++++++++++++++++++--- 1 file changed, 120 insertions(+), 8 deletions(-) (limited to 'libavcodec/libpostproc/postprocess.c') diff --git a/libavcodec/libpostproc/postprocess.c b/libavcodec/libpostproc/postprocess.c index a03ff133d4..b7ffadbc63 100644 --- a/libavcodec/libpostproc/postprocess.c +++ b/libavcodec/libpostproc/postprocess.c @@ -108,8 +108,10 @@ try to unroll inner for(x=0 ... loop to avoid these damn if(x ... checks #if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0) # define attribute_used __attribute__((used)) +# define always_inline __attribute__((always_inline)) inline #else # define attribute_used +# define always_inline inline #endif #ifdef ARCH_X86 @@ -122,7 +124,6 @@ static uint64_t __attribute__((aligned(8))) attribute_used b08= 0x080808080808 static uint64_t __attribute__((aligned(8))) attribute_used b80= 0x8080808080808080LL; #endif - static uint8_t clip_table[3*256]; static uint8_t * const clip_tab= clip_table + 256; @@ -139,6 +140,8 @@ static struct PPFilter filters[]= {"vr", "rkvdeblock", 1, 2, 4, V_RK1_FILTER},*/ {"h1", "x1hdeblock", 1, 1, 3, H_X1_FILTER}, {"v1", "x1vdeblock", 1, 2, 4, V_X1_FILTER}, + {"ha", "ahdeblock", 1, 1, 3, H_A_DEBLOCK}, + {"va", "avdeblock", 1, 2, 4, V_A_DEBLOCK}, {"dr", "dering", 1, 5, 6, DERING}, {"al", "autolevels", 0, 1, 2, LEVEL_FIX}, {"lb", "linblenddeint", 1, 1, 4, LINEAR_BLEND_DEINT_FILTER}, @@ -154,10 +157,11 @@ static struct PPFilter filters[]= static char *replaceTable[]= { - "default", "hdeblock:a,vdeblock:a,dering:a,autolevels,tmpnoise:a:150:200:400", - "de", "hdeblock:a,vdeblock:a,dering:a,autolevels,tmpnoise:a:150:200:400", - "fast", "x1hdeblock:a,x1vdeblock:a,dering:a,autolevels,tmpnoise:a:150:200:400", - "fa", "x1hdeblock:a,x1vdeblock:a,dering:a,autolevels,tmpnoise:a:150:200:400", + "default", "hdeblock:a,vdeblock:a,dering:a", + "de", "hdeblock:a,vdeblock:a,dering:a", + "fast", "x1hdeblock:a,x1vdeblock:a,dering:a", + "fa", "x1hdeblock:a,x1vdeblock:a,dering:a", + "ac", "ha:a:128:7,va:a,dering:a", NULL //End Marker }; @@ -469,6 +473,111 @@ static inline void horizX1Filter(uint8_t *src, int stride, int QP) } } +/** + * accurate deblock filter + */ +static always_inline void do_a_deblock(uint8_t *src, int step, int stride, PPContext *c){ + int y; + const int QP= c->QP; + const int dcOffset= ((c->nonBQP*c->ppMode.baseDcDiff)>>8) + 1; + const int dcThreshold= dcOffset*2 + 1; +//START_TIMER + src+= step*4; // src points to begin of the 8x8 Block + for(y=0; y<8; y++){ + int numEq= 0; + + if(((unsigned)(src[-1*step] - src[0*step] + dcOffset)) < dcThreshold) numEq++; + if(((unsigned)(src[ 0*step] - src[1*step] + dcOffset)) < dcThreshold) numEq++; + if(((unsigned)(src[ 1*step] - src[2*step] + dcOffset)) < dcThreshold) numEq++; + if(((unsigned)(src[ 2*step] - src[3*step] + dcOffset)) < dcThreshold) numEq++; + if(((unsigned)(src[ 3*step] - src[4*step] + dcOffset)) < dcThreshold) numEq++; + if(((unsigned)(src[ 4*step] - src[5*step] + dcOffset)) < dcThreshold) numEq++; + if(((unsigned)(src[ 5*step] - src[6*step] + dcOffset)) < dcThreshold) numEq++; + if(((unsigned)(src[ 6*step] - src[7*step] + dcOffset)) < dcThreshold) numEq++; + if(((unsigned)(src[ 7*step] - src[8*step] + dcOffset)) < dcThreshold) numEq++; + if(numEq > c->ppMode.flatnessThreshold){ + int min, max, x; + + if(src[0] > src[step]){ + max= src[0]; + min= src[step]; + }else{ + max= src[step]; + min= src[0]; + } + for(x=2; x<8; x+=2){ + if(src[x*step] > src[(x+1)*step]){ + if(src[x *step] > max) max= src[ x *step]; + if(src[(x+1)*step] < min) min= src[(x+1)*step]; + }else{ + if(src[(x+1)*step] > max) max= src[(x+1)*step]; + if(src[ x *step] < min) min= src[ x *step]; + } + } + if(max-min < 2*QP){ + const int first= ABS(src[-1*step] - src[0]) < QP ? src[-1*step] : src[0]; + const int last= ABS(src[8*step] - src[7*step]) < QP ? src[8*step] : src[7*step]; + + int sums[10]; + sums[0] = 4*first + src[0*step] + src[1*step] + src[2*step] + 4; + sums[1] = sums[0] - first + src[3*step]; + sums[2] = sums[1] - first + src[4*step]; + sums[3] = sums[2] - first + src[5*step]; + sums[4] = sums[3] - first + src[6*step]; + sums[5] = sums[4] - src[0*step] + src[7*step]; + sums[6] = sums[5] - src[1*step] + last; + sums[7] = sums[6] - src[2*step] + last; + sums[8] = sums[7] - src[3*step] + last; + sums[9] = sums[8] - src[4*step] + last; + + src[0*step]= (sums[0] + sums[2] + 2*src[0*step])>>4; + src[1*step]= (sums[1] + sums[3] + 2*src[1*step])>>4; + src[2*step]= (sums[2] + sums[4] + 2*src[2*step])>>4; + src[3*step]= (sums[3] + sums[5] + 2*src[3*step])>>4; + src[4*step]= (sums[4] + sums[6] + 2*src[4*step])>>4; + src[5*step]= (sums[5] + sums[7] + 2*src[5*step])>>4; + src[6*step]= (sums[6] + sums[8] + 2*src[6*step])>>4; + src[7*step]= (sums[7] + sums[9] + 2*src[7*step])>>4; + } + }else{ + const int middleEnergy= 5*(src[4*step] - src[3*step]) + 2*(src[2*step] - src[5*step]); + + if(ABS(middleEnergy) < 8*QP) + { + const int q=(src[3*step] - src[4*step])/2; + const int leftEnergy= 5*(src[2*step] - src[1*step]) + 2*(src[0*step] - src[3*step]); + const int rightEnergy= 5*(src[6*step] - src[5*step]) + 2*(src[4*step] - src[7*step]); + + int d= ABS(middleEnergy) - MIN( ABS(leftEnergy), ABS(rightEnergy) ); + d= MAX(d, 0); + + d= (5*d + 32) >> 6; + d*= SIGN(-middleEnergy); + + if(q>0) + { + d= d<0 ? 0 : d; + d= d>q ? q : d; + } + else + { + d= d>0 ? 0 : d; + d= d stronger filtering\n" "fq forceQuant force quantizer\n" @@ -793,7 +904,8 @@ pp_mode_t *pp_get_mode_by_name_and_quality(char *name, int quality) } } } - else if(filters[i].mask == V_DEBLOCK || filters[i].mask == H_DEBLOCK) + else if(filters[i].mask == V_DEBLOCK || filters[i].mask == H_DEBLOCK + || filters[i].mask == V_A_DEBLOCK || filters[i].mask == H_A_DEBLOCK) { int o; -- cgit v1.2.3