faster C linear blend & interpolate deinterlacers

Originally committed as revision 1716 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/libavcodec/libpostproc/postprocess_template.c b/libavcodec/libpostproc/postprocess_template.c
index 3ab9c4853c548769cfefd3aa9cc4ff44370d2a52..b4ecca123bc58d8253b7bd9b26b7a091e5f6e43c 100644 (file)
--- a/libavcodec/libpostproc/postprocess_template.c
+++ b/libavcodec/libpostproc/postprocess_template.c
@@ -1562,15 +1562,20 @@ static inline void RENAME(deInterlaceInterpolateLinear)(uint8_t src[], int strid
                : "%eax", "%ecx"
        );
 #else
-       int x;
+       int a, b, x;
        src+= 4*stride;
-       for(x=0; x<8; x++)
-       {
-               src[stride]   = (src[0]        + src[stride*2])>>1;
-               src[stride*3] = (src[stride*2] + src[stride*4])>>1;
-               src[stride*5] = (src[stride*4] + src[stride*6])>>1;
-               src[stride*7] = (src[stride*6] + src[stride*8])>>1;
-               src++;
+
+       for(x=0; x<2; x++){
+               a= *(uint32_t*)&src[stride*0];
+               b= *(uint32_t*)&src[stride*2];
+               *(uint32_t*)&src[stride*1]= (a|b) - (((a^b)&0xFEFEFEFEUL)>>1);
+               a= *(uint32_t*)&src[stride*4];
+               *(uint32_t*)&src[stride*3]= (a|b) - (((a^b)&0xFEFEFEFEUL)>>1);
+               b= *(uint32_t*)&src[stride*6];
+               *(uint32_t*)&src[stride*5]= (a|b) - (((a^b)&0xFEFEFEFEUL)>>1);
+               a= *(uint32_t*)&src[stride*8];
+               *(uint32_t*)&src[stride*7]= (a|b) - (((a^b)&0xFEFEFEFEUL)>>1);
+               src += 4;
        }
 #endif
 }
@@ -1875,19 +1880,45 @@ static inline void RENAME(deInterlaceBlendLinear)(uint8_t src[], int stride)
                : "%eax", "%edx"
        );
 #else
-       int x;
+       int a, b, c, x;
        src+= 4*stride;
-       for(x=0; x<8; x++)
-       {
-               src[0       ] = (src[0       ] + 2*src[stride  ] + src[stride*2])>>2;
-               src[stride  ] = (src[stride  ] + 2*src[stride*2] + src[stride*3])>>2;
-               src[stride*2] = (src[stride*2] + 2*src[stride*3] + src[stride*4])>>2;
-               src[stride*3] = (src[stride*3] + 2*src[stride*4] + src[stride*5])>>2;
-               src[stride*4] = (src[stride*4] + 2*src[stride*5] + src[stride*6])>>2;
-               src[stride*5] = (src[stride*5] + 2*src[stride*6] + src[stride*7])>>2;
-               src[stride*6] = (src[stride*6] + 2*src[stride*7] + src[stride*8])>>2;
-               src[stride*7] = (src[stride*7] + 2*src[stride*8] + src[stride*9])>>2;
-               src++;
+
+       for(x=0; x<2; x++){
+               a= *(uint32_t*)&src[stride*0];
+               b= *(uint32_t*)&src[stride*1];
+               c= *(uint32_t*)&src[stride*2];
+               a= (a&c) + (((a^c)&0xFEFEFEFEUL)>>1);
+               *(uint32_t*)&src[stride*0]= (a|b) - (((a^b)&0xFEFEFEFEUL)>>1);
+
+               a= *(uint32_t*)&src[stride*3];
+               b= (a&b) + (((a^b)&0xFEFEFEFEUL)>>1);
+               *(uint32_t*)&src[stride*1]= (c|b) - (((c^b)&0xFEFEFEFEUL)>>1);
+
+               b= *(uint32_t*)&src[stride*4];
+               c= (b&c) + (((b^c)&0xFEFEFEFEUL)>>1);
+               *(uint32_t*)&src[stride*2]= (c|a) - (((c^a)&0xFEFEFEFEUL)>>1);
+
+               c= *(uint32_t*)&src[stride*5];
+               a= (a&c) + (((a^c)&0xFEFEFEFEUL)>>1);
+               *(uint32_t*)&src[stride*3]= (a|b) - (((a^b)&0xFEFEFEFEUL)>>1);
+
+               a= *(uint32_t*)&src[stride*6];
+               b= (a&b) + (((a^b)&0xFEFEFEFEUL)>>1);
+               *(uint32_t*)&src[stride*4]= (c|b) - (((c^b)&0xFEFEFEFEUL)>>1);
+
+               b= *(uint32_t*)&src[stride*7];
+               c= (b&c) + (((b^c)&0xFEFEFEFEUL)>>1);
+               *(uint32_t*)&src[stride*5]= (c|a) - (((c^a)&0xFEFEFEFEUL)>>1);
+
+               c= *(uint32_t*)&src[stride*8];
+               a= (a&c) + (((a^c)&0xFEFEFEFEUL)>>1);
+               *(uint32_t*)&src[stride*6]= (a|b) - (((a^b)&0xFEFEFEFEUL)>>1);
+
+               a= *(uint32_t*)&src[stride*9];
+               b= (a&b) + (((a^b)&0xFEFEFEFEUL)>>1);
+               *(uint32_t*)&src[stride*7]= (c|b) - (((c^b)&0xFEFEFEFEUL)>>1);
+
+               src += 4;
        }
 #endif
 }