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revision 1.4.2.4, Sun Nov 3 02:04:07 2002 UTC revision 1.5, Fri Sep 6 17:37:07 2002 UTC
# Line 1  Line 1 
1  /**************************************************************************  /*****************************************************************************
2   *   *
3   *      XVID MPEG-4 VIDEO CODEC   *      XVID MPEG-4 VIDEO CODEC
4   *      8x8 block-based halfpel interpolation   *  - 8x8 block-based halfpel interpolation
5     *
6     *  Copyright(C) 2002 Peter Ross <pross@xvid.org>
7     *  Copyright(C) 2002 MinChen <chenm002@163.com>
8     *
9     *  This program is an implementation of a part of one or more MPEG-4
10     *  Video tools as specified in ISO/IEC 14496-2 standard.  Those intending
11     *  to use this software module in hardware or software products are
12     *  advised that its use may infringe existing patents or copyrights, and
13     *  any such use would be at such party's own risk.  The original
14     *  developer of this software module and his/her company, and subsequent
15     *  editors and their companies, will have no liability for use of this
16     *  software or modifications or derivatives thereof.
17   *   *
18   *      This program is free software; you can redistribute it and/or modify   *      This program is free software; you can redistribute it and/or modify
19   *      it under the terms of the GNU General Public License as published by   *      it under the terms of the GNU General Public License as published by
# Line 15  Line 27 
27   *   *
28   *      You should have received a copy of the GNU General Public License   *      You should have received a copy of the GNU General Public License
29   *      along with this program; if not, write to the Free Software   *      along with this program; if not, write to the Free Software
30   *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  *  
  *************************************************************************/  
   
 /**************************************************************************  
  *  
  *      History:  
  *  
  *  05.10.2002  new bilinear and qpel interpolation code - Isibaar  
  *      27.12.2001      modified "compensate_halfpel"  
  *      05.11.2001      initial version; (c)2001 peter ross <pross@cs.rmit.edu.au>  
31   *   *
32   *************************************************************************/   ****************************************************************************/
   
33    
34  #include "../portab.h"  #include "../portab.h"
35  #include "interpolate8x8.h"  #include "interpolate8x8.h"
# Line 38  Line 39 
39  INTERPOLATE8X8_PTR interpolate8x8_halfpel_v;  INTERPOLATE8X8_PTR interpolate8x8_halfpel_v;
40  INTERPOLATE8X8_PTR interpolate8x8_halfpel_hv;  INTERPOLATE8X8_PTR interpolate8x8_halfpel_hv;
41    
 INTERPOLATE8X8_AVG2_PTR interpolate8x8_avg2;  
 INTERPOLATE8X8_AVG4_PTR interpolate8x8_avg4;  
   
 INTERPOLATE_LOWPASS_PTR interpolate8x8_lowpass_h;  
 INTERPOLATE_LOWPASS_PTR interpolate8x8_lowpass_v;  
   
 INTERPOLATE_LOWPASS_PTR interpolate16x16_lowpass_h;  
 INTERPOLATE_LOWPASS_PTR interpolate16x16_lowpass_v;  
   
 INTERPOLATE_LOWPASS_HV_PTR interpolate8x8_lowpass_hv;  
 INTERPOLATE_LOWPASS_HV_PTR interpolate16x16_lowpass_hv;  
   
 INTERPOLATE8X8_6TAP_LOWPASS_PTR interpolate8x8_6tap_lowpass_h;  
 INTERPOLATE8X8_6TAP_LOWPASS_PTR interpolate8x8_6tap_lowpass_v;  
   
 void interpolate8x8_avg2_c(uint8_t *dst, const uint8_t *src1, const uint8_t *src2, const uint32_t stride, const uint32_t rounding)  
 {  
     int32_t i;  
         const int32_t round = 1 - rounding;  
   
     for(i = 0; i < 9; i++)  
     {  
         dst[0] = (src1[0] + src2[0] + round) >> 1;  
         dst[1] = (src1[1] + src2[1] + round) >> 1;  
         dst[2] = (src1[2] + src2[2] + round) >> 1;  
         dst[3] = (src1[3] + src2[3] + round) >> 1;  
         dst[4] = (src1[4] + src2[4] + round) >> 1;  
         dst[5] = (src1[5] + src2[5] + round) >> 1;  
         dst[6] = (src1[6] + src2[6] + round) >> 1;  
         dst[7] = (src1[7] + src2[7] + round) >> 1;  
   
         dst += stride;  
         src1 += stride;  
         src2 += stride;  
     }  
 }  
   
 void interpolate8x8_avg4_c(uint8_t *dst, const uint8_t *src1, const uint8_t *src2, const uint8_t *src3, const uint8_t *src4, const uint32_t stride, const uint32_t rounding)  
 {  
     int32_t i;  
         const int32_t round = 2 - rounding;  
   
     for(i = 0; i < 8; i++)  
     {  
         dst[0] = (src1[0] + src2[0] + src3[0] + src4[0] + round) >> 2;  
         dst[1] = (src1[1] + src2[1] + src3[1] + src4[1] + round) >> 2;  
         dst[2] = (src1[2] + src2[2] + src3[2] + src4[2] + round) >> 2;  
         dst[3] = (src1[3] + src2[3] + src3[3] + src4[3] + round) >> 2;  
         dst[4] = (src1[4] + src2[4] + src3[4] + src4[4] + round) >> 2;  
         dst[5] = (src1[5] + src2[5] + src3[5] + src4[5] + round) >> 2;  
         dst[6] = (src1[6] + src2[6] + src3[6] + src4[6] + round) >> 2;  
         dst[7] = (src1[7] + src2[7] + src3[7] + src4[7] + round) >> 2;  
   
                 dst += stride;  
         src1 += stride;  
         src2 += stride;  
         src3 += stride;  
         src4 += stride;  
     }  
 }  
42    
43  // dst = interpolate(src)  // dst = interpolate(src)
44    
# Line 163  Line 104 
104          }          }
105  }  }
106    
107  /*************************************************************  // add by MinChen <chenm001@163.com>
108   * QPEL STUFF STARTS HERE                                    *  // interpolate8x8 two pred block
109   *************************************************************/  void
110    interpolate8x8_c(uint8_t * const dst,
111  #define CLIP(X,A,B) (X < A) ? (A) : ((X > B) ? (B) : (X))                                   const uint8_t * const src,
112                                     const uint32_t x,
113  void interpolate8x8_6tap_lowpass_h_c(uint8_t *dst, uint8_t *src, int32_t stride, int32_t rounding)                                   const uint32_t y,
114  {                                   const uint32_t stride)
     int32_t i;  
         uint8_t round_add = 16 - rounding;  
   
     for(i = 0; i < 8; i++)  
115      {      {
116            uint32_t i, j;
117    
118          dst[0] = CLIP((((src[-2] + src[3]) + 5 * (((src[0] + src[1])<<2) - (src[-1] + src[2])) + round_add) >> 5), 0, 255);          for (j = 0; j < 8; j++) {
119          dst[1] = CLIP((((src[-1] + src[4]) + 5 * (((src[1] + src[2])<<2) - (src[0] + src[3])) + round_add) >> 5), 0, 255);                  for (i = 0; i < 8; i++) {
120          dst[2] = CLIP((((src[0] + src[5]) + 5 * (((src[2] + src[3])<<2) - (src[1] + src[4])) + round_add) >> 5), 0, 255);                          int32_t tot =
121          dst[3] = CLIP((((src[1] + src[6]) + 5 * (((src[3] + src[4])<<2) - (src[2] + src[5])) + round_add) >> 5), 0, 255);                                  ((src[(y + j) * stride + x + i] +
122          dst[4] = CLIP((((src[2] + src[7]) + 5 * (((src[4] + src[5])<<2) - (src[3] + src[6])) + round_add) >> 5), 0, 255);                                    dst[(y + j) * stride + x + i] + 1) >> 1);
123          dst[5] = CLIP((((src[3] + src[8]) + 5 * (((src[5] + src[6])<<2) - (src[4] + src[7])) + round_add) >> 5), 0, 255);                          dst[(y + j) * stride + x + i] = (uint8_t) tot;
124          dst[6] = CLIP((((src[4] + src[9]) + 5 * (((src[6] + src[7])<<2) - (src[5] + src[8])) + round_add) >> 5), 0, 255);                  }
         dst[7] = CLIP((((src[5] + src[10]) + 5 * (((src[7] + src[8])<<2) - (src[6] + src[9])) + round_add) >> 5), 0, 255);  
   
         dst += stride;  
         src += stride;  
125      }      }
126  }  }
127    
128  void interpolate16x16_lowpass_h_c(uint8_t *dst, uint8_t *src, int32_t stride, int32_t rounding)  /*************************************************************
129  {   * QPEL STUFF STARTS HERE                                    *
130      int32_t i;   *************************************************************/
         uint8_t round_add = 16 - rounding;  
   
     for(i = 0; i < 17; i++)  
     {  
   
         dst[0] = CLIP(((7 * ((src[0]<<1) - src[2]) +  23 * src[1] + 3 * src[3] - src[4] + round_add) >> 5), 0, 255);  
         dst[1] = CLIP(((19 * src[1] + 20 * src[2] - src[5] + 3 * (src[4] - src[0] - (src[3]<<1)) + round_add) >> 5), 0, 255);  
         dst[2] = CLIP(((20 * (src[2] + src[3]) + (src[0]<<1) + 3 * (src[5] - ((src[1] + src[4])<<1)) - src[6] + round_add) >> 5), 0, 255);  
   
         dst[3] = CLIP(((20 * (src[3] + src[4]) + 3 * ((src[6] + src[1]) - ((src[2] + src[5])<<1)) - (src[0] + src[7]) + round_add) >> 5), 0, 255);  
         dst[4] = CLIP(((20 * (src[4] + src[5]) - 3 * (((src[3] + src[6])<<1) - (src[2] + src[7])) - (src[1] + src[8]) + round_add) >> 5), 0, 255);  
         dst[5] = CLIP(((20 * (src[5] + src[6]) - 3 * (((src[4] + src[7])<<1) - (src[3] + src[8])) - (src[2] + src[9]) + round_add) >> 5), 0, 255);  
         dst[6] = CLIP(((20 * (src[6] + src[7]) - 3 * (((src[5] + src[8])<<1) - (src[4] + src[9])) - (src[3] + src[10]) + round_add) >> 5), 0, 255);  
         dst[7] = CLIP(((20 * (src[7] + src[8]) - 3 * (((src[6] + src[9])<<1) - (src[5] + src[10])) - (src[4] + src[11]) + round_add) >> 5), 0, 255);  
         dst[8] = CLIP(((20 * (src[8] + src[9]) - 3 * (((src[7] + src[10])<<1) - (src[6] + src[11])) - (src[5] + src[12]) + round_add) >> 5), 0, 255);  
         dst[9] = CLIP(((20 * (src[9] + src[10]) - 3 * (((src[8] + src[11])<<1) - (src[7] + src[12])) - (src[6] + src[13]) + round_add) >> 5), 0, 255);  
         dst[10] = CLIP(((20 * (src[10] + src[11]) - 3 * (((src[9] + src[12])<<1) - (src[8] + src[13])) - (src[7] + src[14]) + round_add) >> 5), 0, 255);  
         dst[11] = CLIP(((20 * (src[11] + src[12]) - 3 * (((src[10] + src[13])<<1) - (src[9] + src[14])) - (src[8] + src[15]) + round_add) >> 5), 0, 255);  
         dst[12] = CLIP(((20 * (src[12] + src[13]) - 3 * (((src[11] + src[14])<<1) - (src[10] + src[15])) - (src[9] + src[16]) + round_add) >> 5), 0, 255);  
   
         dst[13] = CLIP(((20 * (src[13] + src[14]) + (src[16]<<1) + 3 * (src[11] - ((src[12] + src[15]) << 1)) - src[10] + round_add) >> 5), 0, 255);  
         dst[14] = CLIP(((19 * src[15] + 20 * src[14] + 3 * (src[12] - src[16] - (src[13] << 1)) - src[11] + round_add) >> 5), 0, 255);  
         dst[15] = CLIP(((23 * src[15] + 7 * ((src[16]<<1) - src[14]) + 3 * src[13] - src[12] + round_add) >> 5), 0, 255);  
131    
132          dst += stride;  #define CLIP(X,A,B) (X < A) ? (A) : ((X > B) ? (B) : (X))
         src += stride;  
     }  
 }  
133    
134  void interpolate8x8_lowpass_h_c(uint8_t *dst, uint8_t *src, int32_t stride, int32_t rounding)  void interpolate8x8_lowpass_h(uint8_t *dst, uint8_t *src, int32_t dst_stride, int32_t src_stride, int32_t rounding)
135  {  {
136      int32_t i;      int32_t i;
         uint8_t round_add = 16 - rounding;  
137    
138      for(i = 0; i < 9; i++)      for(i = 0; i < 8; i++)
139      {      {
140            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);
141            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);
142            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);
143            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);
144            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);
145            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);
146            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);
147            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);
148    
149          dst[0] = CLIP(((7 * ((src[0]<<1) - src[2]) + 23 * src[1] + 3 * src[3] - src[4] + round_add) >> 5), 0, 255);          dst += dst_stride;
150          dst[1] = CLIP(((19 * src[1] + 20 * src[2] - src[5] + 3 * (src[4] - src[0] - (src[3]<<1)) + round_add) >> 5), 0, 255);          src += src_stride;
         dst[2] = CLIP(((20 * (src[2] + src[3]) + (src[0]<<1) + 3 * (src[5] - ((src[1] + src[4])<<1)) - src[6] + round_add) >> 5), 0, 255);  
         dst[3] = CLIP(((20 * (src[3] + src[4]) + 3 * ((src[6] + src[1]) - ((src[2] + src[5])<<1)) - (src[0] + src[7]) + round_add) >> 5), 0, 255);  
         dst[4] = CLIP(((20 * (src[4] + src[5]) - 3 * (((src[3] + src[6])<<1) - (src[2] + src[7])) - (src[1] + src[8]) + round_add) >> 5), 0, 255);  
         dst[5] = CLIP(((20 * (src[5] + src[6]) + (src[8]<<1) + 3 * (src[3] - ((src[4] + src[7]) << 1)) - src[2] + round_add) >> 5), 0, 255);  
         dst[6] = CLIP(((19 * src[7] + 20 * src[6] + 3 * (src[4] - src[8] - (src[5] << 1)) - src[3] + round_add) >> 5), 0, 255);  
         dst[7] = CLIP(((23 * src[7] + 7 * ((src[8]<<1) - src[6]) + 3 * src[5] - src[4] + round_add) >> 5), 0, 255);  
   
         dst += stride;  
         src += stride;  
151      }      }
152  }  }
153    
154  void interpolate8x8_6tap_lowpass_v_c(uint8_t *dst, uint8_t *src, int32_t stride, int32_t rounding)  void interpolate8x8_lowpass_v(uint8_t *dst, uint8_t *src, int32_t dst_stride, int32_t src_stride, int32_t rounding)
155  {  {
156      int32_t i;      int32_t i;
         uint8_t round_add = 16 - rounding;  
157    
158      for(i = 0; i < 8; i++)      for(i = 0; i < 8; i++)
159      {      {
         int32_t src_2 = src[-2*stride];  
         int32_t src_1 = src[-stride];  
160          int32_t src0 = src[0];          int32_t src0 = src[0];
161          int32_t src1 = src[stride];          int32_t src1 = src[src_stride];
162          int32_t src2 = src[2 * stride];          int32_t src2 = src[2 * src_stride];
163          int32_t src3 = src[3 * stride];          int32_t src3 = src[3 * src_stride];
164          int32_t src4 = src[4 * stride];          int32_t src4 = src[4 * src_stride];
165          int32_t src5 = src[5 * stride];          int32_t src5 = src[5 * src_stride];
166          int32_t src6 = src[6 * stride];          int32_t src6 = src[6 * src_stride];
167          int32_t src7 = src[7 * stride];          int32_t src7 = src[7 * src_stride];
168          int32_t src8 = src[8 * stride];          int32_t src8 = src[8 * src_stride];
169          int32_t src9 = src[9 * stride];  
170          int32_t src10 = src[10 * stride];                  dst[0] = CLIP((((src0 + src1) * 160 - (src0 + src2) * 48 + (src1 + src3) * 24 - (src2 + src4) * 8 + (128 - rounding)) / 256), 0, 255);
171            dst[dst_stride] = CLIP((((src1 + src2) * 160 - (src0 + src3) * 48 + (src0 + src4) * 24 - (src1 + src5) * 8 + (128 - rounding)) / 256), 0, 255);
172          dst[0]                  = CLIP((((src_2 + src3) + 5 * (((src0 + src1)<<2) - (src_1 + src2)) + round_add) >> 5), 0, 255);          dst[2 * dst_stride] = CLIP((((src2 + src3) * 160 - (src1 + src4) * 48 + (src0 + src5) * 24 - (src0 + src6) * 8 + (128 - rounding)) / 256), 0, 255);
173          dst[stride]             = CLIP((((src_1 + src4) + 5 * (((src1 + src2)<<2) - (src0 + src3)) + round_add) >> 5), 0, 255);          dst[3 * dst_stride] = CLIP((((src3 + src4) * 160 - (src2 + src5) * 48 + (src1 + src6) * 24 - (src0 + src7) * 8 + (128 - rounding)) / 256), 0, 255);
174          dst[2 * stride] = CLIP((((src0 + src5) + 5 * (((src2 + src3)<<2) - (src1 + src4)) + round_add) >> 5), 0, 255);          dst[4 * dst_stride] = CLIP((((src4 + src5) * 160 - (src3 + src6) * 48 + (src2 + src7) * 24 - (src1 + src8) * 8 + (128 - rounding)) / 256), 0, 255);
175          dst[3 * stride] = CLIP((((src1 + src6) + 5 * (((src3 + src4)<<2) - (src2 + src5)) + round_add) >> 5), 0, 255);          dst[5 * dst_stride] = CLIP((((src5 + src6) * 160 - (src4 + src7) * 48 + (src3 + src8) * 24 - (src2 + src8) * 8 + (128 - rounding)) / 256), 0, 255);
176          dst[4 * stride] = CLIP((((src2 + src7) + 5 * (((src4 + src5)<<2) - (src3 + src6)) + round_add) >> 5), 0, 255);          dst[6 * dst_stride] = CLIP((((src6 + src7) * 160 - (src5 + src8) * 48 + (src4 + src8) * 24 - (src3 + src7) * 8 + (128 - rounding)) / 256), 0, 255);
177          dst[5 * stride] = CLIP((((src3 + src8) + 5 * (((src5 + src6)<<2) - (src4 + src7)) + round_add) >> 5), 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[6 * stride] = CLIP((((src4 + src9) + 5 * (((src6 + src7)<<2) - (src5 + src8)) + round_add) >> 5), 0, 255);  
         dst[7 * stride] = CLIP((((src5 + src10) + 5 * (((src7 + src8)<<2) - (src6 + src9)) + round_add) >> 5), 0, 255);  
178    
179                  dst++;                  dst++;
180          src++;          src++;
181      }      }
182  }  }
183    
184  void interpolate16x16_lowpass_v_c(uint8_t *dst, uint8_t *src, int32_t stride, int32_t rounding)  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)
185  {  {
186        uint8_t data[72];
187    
188      int32_t i;      int32_t i;
         uint8_t round_add = 16 - rounding;  
189    
190      for(i = 0; i < 17; i++)  
191        for(i = 0; i < 9; i++)
192      {      {
193          int32_t src0 = src[0];          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);
194          int32_t src1 = src[stride];          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);
195          int32_t src2 = src[2 * stride];          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);
196          int32_t src3 = src[3 * stride];          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);
197          int32_t src4 = src[4 * stride];          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);
198          int32_t src5 = src[5 * stride];          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);
199          int32_t src6 = src[6 * stride];          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);
200          int32_t src7 = src[7 * stride];          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);
         int32_t src8 = src[8 * stride];  
         int32_t src9 = src[9 * stride];  
         int32_t src10 = src[10 * stride];  
         int32_t src11 = src[11 * stride];  
         int32_t src12 = src[12 * stride];  
         int32_t src13 = src[13 * stride];  
         int32_t src14 = src[14 * stride];  
         int32_t src15 = src[15 * stride];  
         int32_t src16 = src[16 * stride];  
   
   
         dst[0] = CLIP(((7 * ((src0<<1) - src2) +  23 * src1 + 3 * src3 - src4 + round_add) >> 5), 0, 255);  
         dst[stride] = CLIP(((19 * src1 + 20 * src2 - src5 + 3 * (src4 - src0 - (src3<<1)) + round_add) >> 5), 0, 255);  
         dst[2*stride] = CLIP(((20 * (src2 + src3) + (src0<<1) + 3 * (src5 - ((src1 + src4)<<1)) - src6 + round_add) >> 5), 0, 255);  
   
         dst[3*stride] = CLIP(((20 * (src3 + src4) + 3 * ((src6 + src1) - ((src2 + src5)<<1)) - (src0 + src7) + round_add) >> 5), 0, 255);  
         dst[4*stride] = CLIP(((20 * (src4 + src5) - 3 * (((src3 + src6)<<1) - (src2 + src7)) - (src1 + src8) + round_add) >> 5), 0, 255);  
         dst[5*stride] = CLIP(((20 * (src5 + src6) - 3 * (((src4 + src7)<<1) - (src3 + src8)) - (src2 + src9) + round_add) >> 5), 0, 255);  
         dst[6*stride] = CLIP(((20 * (src6 + src7) - 3 * (((src5 + src8)<<1) - (src4 + src9)) - (src3 + src10) + round_add) >> 5), 0, 255);  
         dst[7*stride] = CLIP(((20 * (src7 + src8) - 3 * (((src6 + src9)<<1) - (src5 + src10)) - (src4 + src11) + round_add) >> 5), 0, 255);  
         dst[8*stride] = CLIP(((20 * (src8 + src9) - 3 * (((src7 + src10)<<1) - (src6 + src11)) - (src5 + src12) + round_add) >> 5), 0, 255);  
         dst[9*stride] = CLIP(((20 * (src9 + src10) - 3 * (((src8 + src11)<<1) - (src7 + src12)) - (src6 + src13) + round_add) >> 5), 0, 255);  
         dst[10*stride] = CLIP(((20 * (src10 + src11) - 3 * (((src9 + src12)<<1) - (src8 + src13)) - (src7 + src14) + round_add) >> 5), 0, 255);  
         dst[11*stride] = CLIP(((20 * (src11 + src12) - 3 * (((src10 + src13)<<1) - (src9 + src14)) - (src8 + src15) + round_add) >> 5), 0, 255);  
         dst[12*stride] = CLIP(((20 * (src12 + src13) - 3 * (((src11 + src14)<<1) - (src10 + src15)) - (src9 + src16) + round_add) >> 5), 0, 255);  
   
         dst[13*stride] = CLIP(((20 * (src13 + src14) + (src16<<1) + 3 * (src11 - ((src12 + src15) << 1)) - src10 + round_add) >> 5), 0, 255);  
         dst[14*stride] = CLIP(((19 * src15 + 20 * src14 + 3 * (src12 - src16 - (src13 << 1)) - src11 + round_add) >> 5), 0, 255);  
         dst[15*stride] = CLIP(((23 * src15 + 7 * ((src16<<1) - src14) + 3 * src13 - src12 + round_add) >> 5), 0, 255);  
201    
202                  dst++;          src += src_stride;
203          src++;                  dst2 += dst2_stride;
     }  
204  }  }
205    
206  void interpolate8x8_lowpass_v_c(uint8_t *dst, uint8_t *src, int32_t stride, int32_t rounding)      for(i = 0; i < 8; i++)
 {  
     int32_t i;  
         uint8_t round_add = 16 - rounding;  
   
     for(i = 0; i < 9; i++)  
207      {      {
208          int32_t src0 = src[0];          int32_t src0 = data[i];
209          int32_t src1 = src[stride];          int32_t src1 = data[8 + i];
210          int32_t src2 = src[2 * stride];          int32_t src2 = data[2 * 8 + i];
211          int32_t src3 = src[3 * stride];          int32_t src3 = data[3 * 8 + i];
212          int32_t src4 = src[4 * stride];          int32_t src4 = data[4 * 8 + i];
213          int32_t src5 = src[5 * stride];          int32_t src5 = data[5 * 8 + i];
214          int32_t src6 = src[6 * stride];          int32_t src6 = data[6 * 8 + i];
215          int32_t src7 = src[7 * stride];          int32_t src7 = data[7 * 8 + i];
216          int32_t src8 = src[8 * stride];          int32_t src8 = data[8 * 8 + i];
217    
218          dst[0]                  = CLIP(((7 * ((src0<<1) - src2) + 23 * src1 + 3 * src3 - src4 + round_add) >> 5), 0, 255);                  dst1[0] = CLIP((((src0 + src1) * 160 - (src0 + src2) * 48 + (src1 + src3) * 24 - (src2 + src4) * 8 + (128 - rounding)) / 256), 0, 255);
219          dst[stride]             = CLIP(((19 * src1 + 20 * src2 - src5 + 3 * (src4 - src0 - (src3 << 1)) + round_add) >> 5), 0, 255);          dst1[dst1_stride] = CLIP((((src1 + src2) * 160 - (src0 + src3) * 48 + (src0 + src4) * 24 - (src1 + src5) * 8 + (128 - rounding)) / 256), 0, 255);
220          dst[2 * stride] = CLIP(((20 * (src2 + src3) + (src0<<1) + 3 * (src5 - ((src1 + src4) <<1 )) - src6 + round_add) >> 5), 0, 255);          dst1[2 * dst1_stride] = CLIP((((src2 + src3) * 160 - (src1 + src4) * 48 + (src0 + src5) * 24 - (src0 + src6) * 8 + (128 - rounding)) / 256), 0, 255);
221          dst[3 * stride] = CLIP(((20 * (src3 + src4) + 3 * ((src6 + src1) - ((src2 + src5)<<1)) - (src0 + src7) + round_add) >> 5), 0, 255);          dst1[3 * dst1_stride] = CLIP((((src3 + src4) * 160 - (src2 + src5) * 48 + (src1 + src6) * 24 - (src0 + src7) * 8 + (128 - rounding)) / 256), 0, 255);
222          dst[4 * stride] = CLIP(((20 * (src4 + src5) + 3 * ((src2 + src7) - ((src3 + src6)<<1)) - (src1 + src8) + round_add) >> 5), 0, 255);          dst1[4 * dst1_stride] = CLIP((((src4 + src5) * 160 - (src3 + src6) * 48 + (src2 + src7) * 24 - (src1 + src8) * 8 + (128 - rounding)) / 256), 0, 255);
223          dst[5 * stride] = CLIP(((20 * (src5 + src6) + (src8<<1) + 3 * (src3 - ((src4 + src7) << 1)) - src2 + round_add) >> 5), 0, 255);          dst1[5 * dst1_stride] = CLIP((((src5 + src6) * 160 - (src4 + src7) * 48 + (src3 + src8) * 24 - (src2 + src8) * 8 + (128 - rounding)) / 256), 0, 255);
224          dst[6 * stride] = CLIP(((19 * src7 + 20 * src6 - src3 + 3 * (src4 - src8 - (src5 << 1)) + round_add) >> 5), 0, 255);          dst1[6 * dst1_stride] = CLIP((((src6 + src7) * 160 - (src5 + src8) * 48 + (src4 + src8) * 24 - (src3 + src7) * 8 + (128 - rounding)) / 256), 0, 255);
225          dst[7 * stride] = CLIP(((7 * ((src8<<1) - src6) + 23 * src7 + 3 * src5 - src4 + round_add) >> 5), 0, 255);          dst1[7 * dst1_stride] = CLIP((((src7 + src8) * 160 - (src6 + src8) * 48 + (src5 + src7) * 24 - (src4 + src6) * 8 + (128 - rounding)) / 256), 0, 255);
226    
227                  dst++;                  dst1++;
         src++;  
228      }      }
229  }  }
230    
231  void interpolate16x16_lowpass_hv_c(uint8_t *dst1, uint8_t *dst2, uint8_t *src, int32_t stride, int32_t rounding)  void interpolate8x8_bilinear2(uint8_t *dst, uint8_t *src1, uint8_t *src2, int32_t dst_stride, int32_t src_stride, int32_t rounding)
232  {  {
233          int32_t i;          int32_t i;
         uint8_t round_add = 16 - rounding;  
         uint8_t *h_ptr = dst2;  
234    
235      for(i = 0; i < 17; i++)      for(i = 0; i < 8; i++)
236      {      {
237            dst[0] = (src1[0] + src2[0] + (1 - rounding)) >> 1;
238          h_ptr[0] = CLIP(((7 * ((src[0]<<1) - src[2]) +  23 * src[1] + 3 * src[3] - src[4] + round_add) >> 5), 0, 255);          dst[1] = (src1[1] + src2[1] + (1 - rounding)) >> 1;
239          h_ptr[1] = CLIP(((19 * src[1] + 20 * src[2] - src[5] + 3 * (src[4] - src[0] - (src[3]<<1)) + round_add) >> 5), 0, 255);          dst[2] = (src1[2] + src2[2] + (1 - rounding)) >> 1;
240          h_ptr[2] = CLIP(((20 * (src[2] + src[3]) + (src[0]<<1) + 3 * (src[5] - ((src[1] + src[4])<<1)) - src[6] + round_add) >> 5), 0, 255);          dst[3] = (src1[3] + src2[3] + (1 - rounding)) >> 1;
241            dst[4] = (src1[4] + src2[4] + (1 - rounding)) >> 1;
242          h_ptr[3] = CLIP(((20 * (src[3] + src[4]) + 3 * ((src[6] + src[1]) - ((src[2] + src[5])<<1)) - (src[0] + src[7]) + round_add) >> 5), 0, 255);          dst[5] = (src1[5] + src2[5] + (1 - rounding)) >> 1;
243          h_ptr[4] = CLIP(((20 * (src[4] + src[5]) - 3 * (((src[3] + src[6])<<1) - (src[2] + src[7])) - (src[1] + src[8]) + round_add) >> 5), 0, 255);          dst[6] = (src1[6] + src2[6] + (1 - rounding)) >> 1;
244          h_ptr[5] = CLIP(((20 * (src[5] + src[6]) - 3 * (((src[4] + src[7])<<1) - (src[3] + src[8])) - (src[2] + src[9]) + round_add) >> 5), 0, 255);          dst[7] = (src1[7] + src2[7] + (1 - rounding)) >> 1;
245          h_ptr[6] = CLIP(((20 * (src[6] + src[7]) - 3 * (((src[5] + src[8])<<1) - (src[4] + src[9])) - (src[3] + src[10]) + round_add) >> 5), 0, 255);  
246          h_ptr[7] = CLIP(((20 * (src[7] + src[8]) - 3 * (((src[6] + src[9])<<1) - (src[5] + src[10])) - (src[4] + src[11]) + round_add) >> 5), 0, 255);          dst += dst_stride;
247          h_ptr[8] = CLIP(((20 * (src[8] + src[9]) - 3 * (((src[7] + src[10])<<1) - (src[6] + src[11])) - (src[5] + src[12]) + round_add) >> 5), 0, 255);          src1 += src_stride;
248          h_ptr[9] = CLIP(((20 * (src[9] + src[10]) - 3 * (((src[8] + src[11])<<1) - (src[7] + src[12])) - (src[6] + src[13]) + round_add) >> 5), 0, 255);          src2 += 8;
         h_ptr[10] = CLIP(((20 * (src[10] + src[11]) - 3 * (((src[9] + src[12])<<1) - (src[8] + src[13])) - (src[7] + src[14]) + round_add) >> 5), 0, 255);  
         h_ptr[11] = CLIP(((20 * (src[11] + src[12]) - 3 * (((src[10] + src[13])<<1) - (src[9] + src[14])) - (src[8] + src[15]) + round_add) >> 5), 0, 255);  
         h_ptr[12] = CLIP(((20 * (src[12] + src[13]) - 3 * (((src[11] + src[14])<<1) - (src[10] + src[15])) - (src[9] + src[16]) + round_add) >> 5), 0, 255);  
   
         h_ptr[13] = CLIP(((20 * (src[13] + src[14]) + (src[16]<<1) + 3 * (src[11] - ((src[12] + src[15]) << 1)) - src[10] + round_add) >> 5), 0, 255);  
         h_ptr[14] = CLIP(((19 * src[15] + 20 * src[14] + 3 * (src[12] - src[16] - (src[13] << 1)) - src[11] + round_add) >> 5), 0, 255);  
         h_ptr[15] = CLIP(((23 * src[15] + 7 * ((src[16]<<1) - src[14]) + 3 * src[13] - src[12] + round_add) >> 5), 0, 255);  
   
         h_ptr += stride;  
         src += stride;  
249      }      }
   
         interpolate16x16_lowpass_v_c(dst1, dst2, stride, rounding);  
   
250  }  }
251    
252  void interpolate8x8_lowpass_hv_c(uint8_t *dst1, uint8_t *dst2, uint8_t *src, int32_t stride, int32_t rounding)  void interpolate8x8_bilinear4(uint8_t *dst, uint8_t *src1, uint8_t *src2, uint8_t *src3, uint8_t *src4, int32_t stride, int32_t rounding)
253  {  {
254          int32_t i;          int32_t i;
         uint8_t round_add = 16 - rounding;  
         uint8_t *h_ptr = dst2;  
255    
256      for(i = 0; i < 9; i++)      for(i = 0; i < 8; i++)
257      {      {
258            dst[0] = (src1[0] + src2[0] + src3[0] + src4[0] + (2 - rounding)) >> 2;
259            dst[1] = (src1[1] + src2[1] + src3[1] + src4[1] + (2 - rounding)) >> 2;
260            dst[2] = (src1[2] + src2[2] + src3[2] + src4[2] + (2 - rounding)) >> 2;
261            dst[3] = (src1[3] + src2[3] + src3[3] + src4[3] + (2 - rounding)) >> 2;
262            dst[4] = (src1[4] + src2[4] + src3[4] + src4[4] + (2 - rounding)) >> 2;
263            dst[5] = (src1[5] + src2[5] + src3[5] + src4[5] + (2 - rounding)) >> 2;
264            dst[6] = (src1[6] + src2[6] + src3[6] + src4[6] + (2 - rounding)) >> 2;
265            dst[7] = (src1[7] + src2[7] + src3[7] + src4[7] + (2 - rounding)) >> 2;
266    
267          h_ptr[0] = CLIP(((7 * ((src[0]<<1) - src[2]) + 23 * src[1] + 3 * src[3] - src[4] + round_add) >> 5), 0, 255);                  dst += stride;
268          h_ptr[1] = CLIP(((19 * src[1] + 20 * src[2] - src[5] + 3 * (src[4] - src[0] - (src[3]<<1)) + round_add) >> 5), 0, 255);          src1 += stride;
269          h_ptr[2] = CLIP(((20 * (src[2] + src[3]) + (src[0]<<1) + 3 * (src[5] - ((src[1] + src[4])<<1)) - src[6] + round_add) >> 5), 0, 255);          src2 += 8;
270          h_ptr[3] = CLIP(((20 * (src[3] + src[4]) + 3 * ((src[6] + src[1]) - ((src[2] + src[5])<<1)) - (src[0] + src[7]) + round_add) >> 5), 0, 255);          src3 += 8;
271          h_ptr[4] = CLIP(((20 * (src[4] + src[5]) - 3 * (((src[3] + src[6])<<1) - (src[2] + src[7])) - (src[1] + src[8]) + round_add) >> 5), 0, 255);          src4 += 8;
         h_ptr[5] = CLIP(((20 * (src[5] + src[6]) + (src[8]<<1) + 3 * (src[3] - ((src[4] + src[7]) << 1)) - src[2] + round_add) >> 5), 0, 255);  
         h_ptr[6] = CLIP(((19 * src[7] + 20 * src[6] + 3 * (src[4] - src[8] - (src[5] << 1)) - src[3] + round_add) >> 5), 0, 255);  
         h_ptr[7] = CLIP(((23 * src[7] + 7 * ((src[8]<<1) - src[6]) + 3 * src[5] - src[4] + round_add) >> 5), 0, 255);  
   
         h_ptr += stride;  
         src += stride;  
272      }      }
   
         interpolate8x8_lowpass_v_c(dst1, dst2, stride, rounding);  
   
273  }  }
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