[svn] / trunk / xvidcore / src / image / interpolate8x8.c Repository:
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revision 723, Sun Dec 15 01:21:12 2002 UTC revision 830, Tue Feb 11 21:56:31 2003 UTC
# Line 51  Line 51 
51   *  exception also makes it possible to release a modified version which   *  exception also makes it possible to release a modified version which
52   *  carries forward this exception.   *  carries forward this exception.
53   *   *
54   * $Id: interpolate8x8.c,v 1.8 2002-12-15 01:21:12 edgomez Exp $   * $Id: interpolate8x8.c,v 1.9 2003-02-11 21:56:31 edgomez Exp $
55   *   *
56   ****************************************************************************/   ****************************************************************************/
57    
# Line 147  Line 147 
147                  }                  }
148          }          }
149  }  }
   
 /*************************************************************  
  * QPEL STUFF STARTS HERE                                    *  
  *************************************************************/  
   
 #define CLIP(X,A,B) (X < A) ? (A) : ((X > B) ? (B) : (X))  
   
 void interpolate8x8_lowpass_h(uint8_t *dst, uint8_t *src, int32_t dst_stride, int32_t src_stride, int32_t rounding)  
 {  
     int32_t i;  
   
     for(i = 0; i < 8; i++)  
     {  
         dst[0] = CLIP((((src[0] + src[1]) * 160 - (src[0] + src[2]) * 48 + (src[1] + src[3]) * 24 - (src[2] + src[4]) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst[1] = CLIP((((src[1] + src[2]) * 160 - (src[0] + src[3]) * 48 + (src[0] + src[4]) * 24 - (src[1] + src[5]) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst[2] = CLIP((((src[2] + src[3]) * 160 - (src[1] + src[4]) * 48 + (src[0] + src[5]) * 24 - (src[0] + src[6]) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst[3] = CLIP((((src[3] + src[4]) * 160 - (src[2] + src[5]) * 48 + (src[1] + src[6]) * 24 - (src[0] + src[7]) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst[4] = CLIP((((src[4] + src[5]) * 160 - (src[3] + src[6]) * 48 + (src[2] + src[7]) * 24 - (src[1] + src[8]) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst[5] = CLIP((((src[5] + src[6]) * 160 - (src[4] + src[7]) * 48 + (src[3] + src[8]) * 24 - (src[2] + src[8]) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst[6] = CLIP((((src[6] + src[7]) * 160 - (src[5] + src[8]) * 48 + (src[4] + src[8]) * 24 - (src[3] + src[7]) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst[7] = CLIP((((src[7] + src[8]) * 160 - (src[6] + src[8]) * 48 + (src[5] + src[7]) * 24 - (src[4] + src[6]) * 8 + (128 - rounding)) / 256), 0, 255);  
   
         dst += dst_stride;  
         src += src_stride;  
     }  
 }  
   
 void interpolate8x8_lowpass_v(uint8_t *dst, uint8_t *src, int32_t dst_stride, int32_t src_stride, int32_t rounding)  
 {  
     int32_t i;  
   
     for(i = 0; i < 8; i++)  
     {  
         int32_t src0 = src[0];  
         int32_t src1 = src[src_stride];  
         int32_t src2 = src[2 * src_stride];  
         int32_t src3 = src[3 * src_stride];  
         int32_t src4 = src[4 * src_stride];  
         int32_t src5 = src[5 * src_stride];  
         int32_t src6 = src[6 * src_stride];  
         int32_t src7 = src[7 * src_stride];  
         int32_t src8 = src[8 * src_stride];  
   
                 dst[0] = CLIP((((src0 + src1) * 160 - (src0 + src2) * 48 + (src1 + src3) * 24 - (src2 + src4) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst[dst_stride] = CLIP((((src1 + src2) * 160 - (src0 + src3) * 48 + (src0 + src4) * 24 - (src1 + src5) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst[2 * dst_stride] = CLIP((((src2 + src3) * 160 - (src1 + src4) * 48 + (src0 + src5) * 24 - (src0 + src6) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst[3 * dst_stride] = CLIP((((src3 + src4) * 160 - (src2 + src5) * 48 + (src1 + src6) * 24 - (src0 + src7) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst[4 * dst_stride] = CLIP((((src4 + src5) * 160 - (src3 + src6) * 48 + (src2 + src7) * 24 - (src1 + src8) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst[5 * dst_stride] = CLIP((((src5 + src6) * 160 - (src4 + src7) * 48 + (src3 + src8) * 24 - (src2 + src8) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst[6 * dst_stride] = CLIP((((src6 + src7) * 160 - (src5 + src8) * 48 + (src4 + src8) * 24 - (src3 + src7) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst[7 * dst_stride] = CLIP((((src7 + src8) * 160 - (src6 + src8) * 48 + (src5 + src7) * 24 - (src4 + src6) * 8 + (128 - rounding)) / 256), 0, 255);  
   
                 dst++;  
         src++;  
     }  
 }  
   
 void interpolate8x8_lowpass_hv(uint8_t *dst1, uint8_t *dst2, uint8_t *src, int32_t dst1_stride, int32_t dst2_stride, int32_t src_stride, int32_t rounding)  
 {  
     uint8_t data[72];  
   
         int32_t i;  
   
   
     for(i = 0; i < 9; i++)  
     {  
         dst2[0] = data[8 * i + 0] = CLIP((((src[0] + src[1]) * 160 - (src[0] + src[2]) * 48 + (src[1] + src[3]) * 24 - (src[2] + src[4]) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst2[1] = data[8 * i + 1] = CLIP((((src[1] + src[2]) * 160 - (src[0] + src[3]) * 48 + (src[0] + src[4]) * 24 - (src[1] + src[5]) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst2[2] = data[8 * i + 2] = CLIP((((src[2] + src[3]) * 160 - (src[1] + src[4]) * 48 + (src[0] + src[5]) * 24 - (src[0] + src[6]) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst2[3] = data[8 * i + 3] = CLIP((((src[3] + src[4]) * 160 - (src[2] + src[5]) * 48 + (src[1] + src[6]) * 24 - (src[0] + src[7]) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst2[4] = data[8 * i + 4] = CLIP((((src[4] + src[5]) * 160 - (src[3] + src[6]) * 48 + (src[2] + src[7]) * 24 - (src[1] + src[8]) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst2[5] = data[8 * i + 5] = CLIP((((src[5] + src[6]) * 160 - (src[4] + src[7]) * 48 + (src[3] + src[8]) * 24 - (src[2] + src[8]) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst2[6] = data[8 * i + 6] = CLIP((((src[6] + src[7]) * 160 - (src[5] + src[8]) * 48 + (src[4] + src[8]) * 24 - (src[3] + src[7]) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst2[7] = data[8 * i + 7] = CLIP((((src[7] + src[8]) * 160 - (src[6] + src[8]) * 48 + (src[5] + src[7]) * 24 - (src[4] + src[6]) * 8 + (128 - rounding)) / 256), 0, 255);  
   
         src += src_stride;  
                 dst2 += dst2_stride;  
     }  
   
     for(i = 0; i < 8; i++)  
     {  
         int32_t src0 = data[i];  
         int32_t src1 = data[8 + i];  
         int32_t src2 = data[2 * 8 + i];  
         int32_t src3 = data[3 * 8 + i];  
         int32_t src4 = data[4 * 8 + i];  
         int32_t src5 = data[5 * 8 + i];  
         int32_t src6 = data[6 * 8 + i];  
         int32_t src7 = data[7 * 8 + i];  
         int32_t src8 = data[8 * 8 + i];  
   
                 dst1[0] = CLIP((((src0 + src1) * 160 - (src0 + src2) * 48 + (src1 + src3) * 24 - (src2 + src4) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst1[dst1_stride] = CLIP((((src1 + src2) * 160 - (src0 + src3) * 48 + (src0 + src4) * 24 - (src1 + src5) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst1[2 * dst1_stride] = CLIP((((src2 + src3) * 160 - (src1 + src4) * 48 + (src0 + src5) * 24 - (src0 + src6) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst1[3 * dst1_stride] = CLIP((((src3 + src4) * 160 - (src2 + src5) * 48 + (src1 + src6) * 24 - (src0 + src7) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst1[4 * dst1_stride] = CLIP((((src4 + src5) * 160 - (src3 + src6) * 48 + (src2 + src7) * 24 - (src1 + src8) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst1[5 * dst1_stride] = CLIP((((src5 + src6) * 160 - (src4 + src7) * 48 + (src3 + src8) * 24 - (src2 + src8) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst1[6 * dst1_stride] = CLIP((((src6 + src7) * 160 - (src5 + src8) * 48 + (src4 + src8) * 24 - (src3 + src7) * 8 + (128 - rounding)) / 256), 0, 255);  
         dst1[7 * dst1_stride] = CLIP((((src7 + src8) * 160 - (src6 + src8) * 48 + (src5 + src7) * 24 - (src4 + src6) * 8 + (128 - rounding)) / 256), 0, 255);  
   
                 dst1++;  
     }  
 }  
   
 void interpolate8x8_bilinear2(uint8_t *dst, uint8_t *src1, uint8_t *src2, int32_t dst_stride, int32_t src_stride, int32_t rounding)  
 {  
     int32_t i;  
   
     for(i = 0; i < 8; i++)  
     {  
         dst[0] = (uint8_t)((src1[0] + src2[0] + (1 - rounding)) >> 1);  
         dst[1] = (uint8_t)((src1[1] + src2[1] + (1 - rounding)) >> 1);  
         dst[2] = (uint8_t)((src1[2] + src2[2] + (1 - rounding)) >> 1);  
         dst[3] = (uint8_t)((src1[3] + src2[3] + (1 - rounding)) >> 1);  
         dst[4] = (uint8_t)((src1[4] + src2[4] + (1 - rounding)) >> 1);  
         dst[5] = (uint8_t)((src1[5] + src2[5] + (1 - rounding)) >> 1);  
         dst[6] = (uint8_t)((src1[6] + src2[6] + (1 - rounding)) >> 1);  
         dst[7] = (uint8_t)((src1[7] + src2[7] + (1 - rounding)) >> 1);  
   
         dst += dst_stride;  
         src1 += src_stride;  
         src2 += 8;  
     }  
 }  
   
 void interpolate8x8_bilinear4(uint8_t *dst, uint8_t *src1, uint8_t *src2, uint8_t *src3, uint8_t *src4, int32_t stride, int32_t rounding)  
 {  
     int32_t i;  
   
     for(i = 0; i < 8; i++)  
     {  
         dst[0] = (uint8_t)((src1[0] + src2[0] + src3[0] + src4[0] + (2 - rounding)) >> 2);  
         dst[1] = (uint8_t)((src1[1] + src2[1] + src3[1] + src4[1] + (2 - rounding)) >> 2);  
         dst[2] = (uint8_t)((src1[2] + src2[2] + src3[2] + src4[2] + (2 - rounding)) >> 2);  
         dst[3] = (uint8_t)((src1[3] + src2[3] + src3[3] + src4[3] + (2 - rounding)) >> 2);  
         dst[4] = (uint8_t)((src1[4] + src2[4] + src3[4] + src4[4] + (2 - rounding)) >> 2);  
         dst[5] = (uint8_t)((src1[5] + src2[5] + src3[5] + src4[5] + (2 - rounding)) >> 2);  
         dst[6] = (uint8_t)((src1[6] + src2[6] + src3[6] + src4[6] + (2 - rounding)) >> 2);  
         dst[7] = (uint8_t)((src1[7] + src2[7] + src3[7] + src4[7] + (2 - rounding)) >> 2);  
   
                 dst += stride;  
         src1 += stride;  
         src2 += 8;  
         src3 += 8;  
         src4 += 8;  
     }  
 }  

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