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@ -23,78 +23,94 @@ |
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#include "config.h" |
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#include "h263dsp.h" |
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const uint8_t ff_h263_loop_filter_strength[32]={ |
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// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
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0, 1, 1, 2, 2, 3, 3, 4, 4, 4, 5, 5, 6, 6, 7, 7, 7, 8, 8, 8, 9, 9, 9,10,10,10,11,11,11,12,12,12 |
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const uint8_t ff_h263_loop_filter_strength[32] = { |
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0, 1, 1, 2, 2, 3, 3, 4, 4, 4, 5, 5, 6, 6, 7, 7, |
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7, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11, 11, 11, 12, 12, 12 |
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}; |
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static void h263_h_loop_filter_c(uint8_t *src, int stride, int qscale){ |
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static void h263_h_loop_filter_c(uint8_t *src, int stride, int qscale) |
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{ |
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int y; |
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const int strength= ff_h263_loop_filter_strength[qscale]; |
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const int strength = ff_h263_loop_filter_strength[qscale]; |
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for(y=0; y<8; y++){ |
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for (y = 0; y < 8; y++) { |
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int d1, d2, ad1; |
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int p0= src[y*stride-2]; |
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int p1= src[y*stride-1]; |
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int p2= src[y*stride+0]; |
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int p3= src[y*stride+1]; |
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int d = (p0 - p3 + 4*(p2 - p1)) / 8; |
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if (d<-2*strength) d1= 0; |
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else if(d<- strength) d1=-2*strength - d; |
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else if(d< strength) d1= d; |
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else if(d< 2*strength) d1= 2*strength - d; |
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else d1= 0; |
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int p0 = src[y * stride - 2]; |
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int p1 = src[y * stride - 1]; |
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int p2 = src[y * stride + 0]; |
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int p3 = src[y * stride + 1]; |
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int d = (p0 - p3 + 4 * (p2 - p1)) / 8; |
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if (d < -2 * strength) |
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d1 = 0; |
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else if (d < -strength) |
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d1 = -2 * strength - d; |
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else if (d < strength) |
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d1 = d; |
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else if (d < 2 * strength) |
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d1 = 2 * strength - d; |
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else |
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d1 = 0; |
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p1 += d1; |
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p2 -= d1; |
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if(p1&256) p1= ~(p1>>31); |
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if(p2&256) p2= ~(p2>>31); |
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if (p1 & 256) |
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p1 = ~(p1 >> 31); |
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if (p2 & 256) |
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p2 = ~(p2 >> 31); |
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src[y*stride-1] = p1; |
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src[y*stride+0] = p2; |
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src[y * stride - 1] = p1; |
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src[y * stride + 0] = p2; |
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ad1= FFABS(d1)>>1; |
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ad1 = FFABS(d1) >> 1; |
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d2= av_clip((p0-p3)/4, -ad1, ad1); |
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d2 = av_clip((p0 - p3) / 4, -ad1, ad1); |
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src[y*stride-2] = p0 - d2; |
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src[y*stride+1] = p3 + d2; |
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src[y * stride - 2] = p0 - d2; |
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src[y * stride + 1] = p3 + d2; |
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} |
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} |
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static void h263_v_loop_filter_c(uint8_t *src, int stride, int qscale){ |
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static void h263_v_loop_filter_c(uint8_t *src, int stride, int qscale) |
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{ |
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int x; |
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const int strength= ff_h263_loop_filter_strength[qscale]; |
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const int strength = ff_h263_loop_filter_strength[qscale]; |
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for(x=0; x<8; x++){ |
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for (x = 0; x < 8; x++) { |
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int d1, d2, ad1; |
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int p0= src[x-2*stride]; |
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int p1= src[x-1*stride]; |
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int p2= src[x+0*stride]; |
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int p3= src[x+1*stride]; |
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int d = (p0 - p3 + 4*(p2 - p1)) / 8; |
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if (d<-2*strength) d1= 0; |
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else if(d<- strength) d1=-2*strength - d; |
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else if(d< strength) d1= d; |
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else if(d< 2*strength) d1= 2*strength - d; |
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else d1= 0; |
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int p0 = src[x - 2 * stride]; |
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int p1 = src[x - 1 * stride]; |
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int p2 = src[x + 0 * stride]; |
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int p3 = src[x + 1 * stride]; |
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int d = (p0 - p3 + 4 * (p2 - p1)) / 8; |
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if (d < -2 * strength) |
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d1 = 0; |
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else if (d < -strength) |
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d1 = -2 * strength - d; |
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else if (d < strength) |
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d1 = d; |
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else if (d < 2 * strength) |
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d1 = 2 * strength - d; |
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else |
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d1 = 0; |
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p1 += d1; |
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p2 -= d1; |
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if(p1&256) p1= ~(p1>>31); |
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if(p2&256) p2= ~(p2>>31); |
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if (p1 & 256) |
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p1 = ~(p1 >> 31); |
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if (p2 & 256) |
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p2 = ~(p2 >> 31); |
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src[x-1*stride] = p1; |
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src[x+0*stride] = p2; |
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src[x - 1 * stride] = p1; |
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src[x + 0 * stride] = p2; |
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ad1= FFABS(d1)>>1; |
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ad1 = FFABS(d1) >> 1; |
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d2= av_clip((p0-p3)/4, -ad1, ad1); |
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d2 = av_clip((p0 - p3) / 4, -ad1, ad1); |
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src[x-2*stride] = p0 - d2; |
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src[x+ stride] = p3 + d2; |
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src[x - 2 * stride] = p0 - d2; |
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src[x + stride] = p3 + d2; |
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} |
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} |
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