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revision 1.4, Wed Jul 24 00:50:05 2002 UTC revision 1.4.2.6, Sat Jan 4 06:14:33 2003 UTC
# Line 23  Line 23 
23   *   *
24   *      History:   *      History:
25   *   *
26   *  02.05.2002  add "interpolate8x8_c" for B-frame;   MinChen <chenm002@163.com>   *  05.10.2002  new bilinear and qpel interpolation code - Isibaar
27   *      27.12.2001      modified "compensate_halfpel"   *      27.12.2001      modified "compensate_halfpel"
28   *      05.11.2001      initial version; (c)2001 peter ross <pross@cs.rmit.edu.au>   *      05.11.2001      initial version; (c)2001 peter ross <pross@cs.rmit.edu.au>
29   *   *
# Line 31  Line 31 
31    
32    
33  #include "../portab.h"  #include "../portab.h"
34    #include "../global.h"
35  #include "interpolate8x8.h"  #include "interpolate8x8.h"
36    
37  // function pointers  // function pointers
# 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    
42    INTERPOLATE8X8_AVG2_PTR interpolate8x8_avg2;
43    INTERPOLATE8X8_AVG4_PTR interpolate8x8_avg4;
44    
45    INTERPOLATE_LOWPASS_PTR interpolate8x8_lowpass_h;
46    INTERPOLATE_LOWPASS_PTR interpolate8x8_lowpass_v;
47    
48    INTERPOLATE_LOWPASS_PTR interpolate16x16_lowpass_h;
49    INTERPOLATE_LOWPASS_PTR interpolate16x16_lowpass_v;
50    
51    INTERPOLATE_LOWPASS_HV_PTR interpolate8x8_lowpass_hv;
52    INTERPOLATE_LOWPASS_HV_PTR interpolate16x16_lowpass_hv;
53    
54    INTERPOLATE8X8_6TAP_LOWPASS_PTR interpolate8x8_6tap_lowpass_h;
55    INTERPOLATE8X8_6TAP_LOWPASS_PTR interpolate8x8_6tap_lowpass_v;
56    
57    void interpolate8x8_avg2_c(uint8_t *dst, const uint8_t *src1, const uint8_t *src2, const uint32_t stride, const uint32_t rounding, const uint32_t height)
58    {
59        uint32_t i;
60            const int32_t round = 1 - rounding;
61    
62        for(i = 0; i < height; i++)
63        {
64            dst[0] = (src1[0] + src2[0] + round) >> 1;
65            dst[1] = (src1[1] + src2[1] + round) >> 1;
66            dst[2] = (src1[2] + src2[2] + round) >> 1;
67            dst[3] = (src1[3] + src2[3] + round) >> 1;
68            dst[4] = (src1[4] + src2[4] + round) >> 1;
69            dst[5] = (src1[5] + src2[5] + round) >> 1;
70            dst[6] = (src1[6] + src2[6] + round) >> 1;
71            dst[7] = (src1[7] + src2[7] + round) >> 1;
72    
73            dst += stride;
74            src1 += stride;
75            src2 += stride;
76        }
77    }
78    
79    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)
80    {
81        int32_t i;
82            const int32_t round = 2 - rounding;
83    
84        for(i = 0; i < 8; i++)
85        {
86            dst[0] = (src1[0] + src2[0] + src3[0] + src4[0] + round) >> 2;
87            dst[1] = (src1[1] + src2[1] + src3[1] + src4[1] + round) >> 2;
88            dst[2] = (src1[2] + src2[2] + src3[2] + src4[2] + round) >> 2;
89            dst[3] = (src1[3] + src2[3] + src3[3] + src4[3] + round) >> 2;
90            dst[4] = (src1[4] + src2[4] + src3[4] + src4[4] + round) >> 2;
91            dst[5] = (src1[5] + src2[5] + src3[5] + src4[5] + round) >> 2;
92            dst[6] = (src1[6] + src2[6] + src3[6] + src4[6] + round) >> 2;
93            dst[7] = (src1[7] + src2[7] + src3[7] + src4[7] + round) >> 2;
94    
95                    dst += stride;
96            src1 += stride;
97            src2 += stride;
98            src3 += stride;
99            src4 += stride;
100        }
101    }
102    
103  // dst = interpolate(src)  // dst = interpolate(src)
104    
# Line 103  Line 164 
164          }          }
165  }  }
166    
167  // add by MinChen <chenm001@163.com>  /*************************************************************
168  // interpolate8x8 two pred block   * QPEL STUFF STARTS HERE                                    *
169  void   *************************************************************/
170  interpolate8x8_c(uint8_t * const dst,  
171                                   const uint8_t * const src,  void interpolate8x8_6tap_lowpass_h_c(uint8_t *dst, uint8_t *src, int32_t stride, int32_t rounding)
                                  const uint32_t x,  
                                  const uint32_t y,  
                                  const uint32_t stride)  
172  {  {
173          uint32_t i, j;      int32_t i;
174            uint8_t round_add = 16 - rounding;
175    
176          for (j = 0; j < 8; j++) {      for(i = 0; i < 8; i++)
177                  for (i = 0; i < 8; i++) {      {
178                          int32_t tot =  
179                                  ((src[(y + j) * stride + x + i] +          dst[0] = CLIP((((src[-2] + src[3]) + 5 * (((src[0] + src[1])<<2) - (src[-1] + src[2])) + round_add) >> 5), 0, 255);
180                                    dst[(y + j) * stride + x + i] + 1) >> 1);          dst[1] = CLIP((((src[-1] + src[4]) + 5 * (((src[1] + src[2])<<2) - (src[0] + src[3])) + round_add) >> 5), 0, 255);
181                          dst[(y + j) * stride + x + i] = (uint8_t) tot;          dst[2] = CLIP((((src[0] + src[5]) + 5 * (((src[2] + src[3])<<2) - (src[1] + src[4])) + round_add) >> 5), 0, 255);
182                  }          dst[3] = CLIP((((src[1] + src[6]) + 5 * (((src[3] + src[4])<<2) - (src[2] + src[5])) + round_add) >> 5), 0, 255);
183            dst[4] = CLIP((((src[2] + src[7]) + 5 * (((src[4] + src[5])<<2) - (src[3] + src[6])) + round_add) >> 5), 0, 255);
184            dst[5] = CLIP((((src[3] + src[8]) + 5 * (((src[5] + src[6])<<2) - (src[4] + src[7])) + round_add) >> 5), 0, 255);
185            dst[6] = CLIP((((src[4] + src[9]) + 5 * (((src[6] + src[7])<<2) - (src[5] + src[8])) + round_add) >> 5), 0, 255);
186            dst[7] = CLIP((((src[5] + src[10]) + 5 * (((src[7] + src[8])<<2) - (src[6] + src[9])) + round_add) >> 5), 0, 255);
187    
188            dst += stride;
189            src += stride;
190          }          }
191  }  }
192    
193  /*************************************************************  void interpolate16x16_lowpass_h_c(uint8_t *dst, uint8_t *src, int32_t stride, int32_t rounding)
194   * QPEL STUFF STARTS HERE                                    *  {
195   *************************************************************/      int32_t i;
196            uint8_t round_add = 16 - rounding;
197    
198  #define CLIP(X,A,B) (X < A) ? (A) : ((X > B) ? (B) : (X))      for(i = 0; i < 17; i++)
199        {
200    
201            dst[0] = CLIP(((7 * ((src[0]<<1) - src[2]) +  23 * src[1] + 3 * src[3] - src[4] + round_add) >> 5), 0, 255);
202            dst[1] = CLIP(((19 * src[1] + 20 * src[2] - src[5] + 3 * (src[4] - src[0] - (src[3]<<1)) + round_add) >> 5), 0, 255);
203            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);
204    
205            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);
206            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);
207            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);
208            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);
209            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);
210            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);
211            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);
212            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);
213            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);
214            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);
215    
216            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);
217            dst[14] = CLIP(((19 * src[15] + 20 * src[14] + 3 * (src[12] - src[16] - (src[13] << 1)) - src[11] + round_add) >> 5), 0, 255);
218            dst[15] = CLIP(((23 * src[15] + 7 * ((src[16]<<1) - src[14]) + 3 * src[13] - src[12] + round_add) >> 5), 0, 255);
219    
220  void interpolate8x8_lowpass_h(uint8_t *dst, uint8_t *src, int32_t dst_stride, int32_t src_stride, int32_t rounding)          dst += stride;
221            src += stride;
222        }
223    }
224    
225    void interpolate8x8_lowpass_h_c(uint8_t *dst, uint8_t *src, int32_t stride, int32_t rounding)
226  {  {
227      int32_t i;      int32_t i;
228            uint8_t round_add = 16 - rounding;
229    
230      for(i = 0; i < 8; i++)      for(i = 0; i < 9; i++)
231      {      {
         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);  
232    
233          dst += dst_stride;          dst[0] = CLIP(((7 * ((src[0]<<1) - src[2]) + 23 * src[1] + 3 * src[3] - src[4] + round_add) >> 5), 0, 255);
234          src += src_stride;          dst[1] = CLIP(((19 * src[1] + 20 * src[2] - src[5] + 3 * (src[4] - src[0] - (src[3]<<1)) + round_add) >> 5), 0, 255);
235            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);
236            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);
237            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);
238            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);
239            dst[6] = CLIP(((19 * src[7] + 20 * src[6] + 3 * (src[4] - src[8] - (src[5] << 1)) - src[3] + round_add) >> 5), 0, 255);
240            dst[7] = CLIP(((23 * src[7] + 7 * ((src[8]<<1) - src[6]) + 3 * src[5] - src[4] + round_add) >> 5), 0, 255);
241    
242            dst += stride;
243            src += stride;
244      }      }
245  }  }
246    
247  void interpolate8x8_lowpass_v(uint8_t *dst, uint8_t *src, int32_t dst_stride, int32_t src_stride, int32_t rounding)  void interpolate8x8_6tap_lowpass_v_c(uint8_t *dst, uint8_t *src, int32_t stride, int32_t rounding)
248  {  {
249      int32_t i;      int32_t i;
250            uint8_t round_add = 16 - rounding;
251    
252      for(i = 0; i < 8; i++)      for(i = 0; i < 8; i++)
253      {      {
254            int32_t src_2 = src[-2*stride];
255            int32_t src_1 = src[-stride];
256          int32_t src0 = src[0];          int32_t src0 = src[0];
257          int32_t src1 = src[src_stride];          int32_t src1 = src[stride];
258          int32_t src2 = src[2 * src_stride];          int32_t src2 = src[2 * stride];
259          int32_t src3 = src[3 * src_stride];          int32_t src3 = src[3 * stride];
260          int32_t src4 = src[4 * src_stride];          int32_t src4 = src[4 * stride];
261          int32_t src5 = src[5 * src_stride];          int32_t src5 = src[5 * stride];
262          int32_t src6 = src[6 * src_stride];          int32_t src6 = src[6 * stride];
263          int32_t src7 = src[7 * src_stride];          int32_t src7 = src[7 * stride];
264          int32_t src8 = src[8 * src_stride];          int32_t src8 = src[8 * stride];
265            int32_t src9 = src[9 * stride];
266                  dst[0] = CLIP((((src0 + src1) * 160 - (src0 + src2) * 48 + (src1 + src3) * 24 - (src2 + src4) * 8 + (128 - rounding)) / 256), 0, 255);          int32_t src10 = src[10 * stride];
267          dst[dst_stride] = CLIP((((src1 + src2) * 160 - (src0 + src3) * 48 + (src0 + src4) * 24 - (src1 + src5) * 8 + (128 - rounding)) / 256), 0, 255);  
268          dst[2 * dst_stride] = CLIP((((src2 + src3) * 160 - (src1 + src4) * 48 + (src0 + src5) * 24 - (src0 + src6) * 8 + (128 - rounding)) / 256), 0, 255);          dst[0]                  = CLIP((((src_2 + src3) + 5 * (((src0 + src1)<<2) - (src_1 + src2)) + round_add) >> 5), 0, 255);
269          dst[3 * dst_stride] = CLIP((((src3 + src4) * 160 - (src2 + src5) * 48 + (src1 + src6) * 24 - (src0 + src7) * 8 + (128 - rounding)) / 256), 0, 255);          dst[stride]             = CLIP((((src_1 + src4) + 5 * (((src1 + src2)<<2) - (src0 + src3)) + round_add) >> 5), 0, 255);
270          dst[4 * dst_stride] = CLIP((((src4 + src5) * 160 - (src3 + src6) * 48 + (src2 + src7) * 24 - (src1 + src8) * 8 + (128 - rounding)) / 256), 0, 255);          dst[2 * stride] = CLIP((((src0 + src5) + 5 * (((src2 + src3)<<2) - (src1 + src4)) + round_add) >> 5), 0, 255);
271          dst[5 * dst_stride] = CLIP((((src5 + src6) * 160 - (src4 + src7) * 48 + (src3 + src8) * 24 - (src2 + src8) * 8 + (128 - rounding)) / 256), 0, 255);          dst[3 * stride] = CLIP((((src1 + src6) + 5 * (((src3 + src4)<<2) - (src2 + src5)) + round_add) >> 5), 0, 255);
272          dst[6 * dst_stride] = CLIP((((src6 + src7) * 160 - (src5 + src8) * 48 + (src4 + src8) * 24 - (src3 + src7) * 8 + (128 - rounding)) / 256), 0, 255);          dst[4 * stride] = CLIP((((src2 + src7) + 5 * (((src4 + src5)<<2) - (src3 + src6)) + round_add) >> 5), 0, 255);
273          dst[7 * dst_stride] = CLIP((((src7 + src8) * 160 - (src6 + src8) * 48 + (src5 + src7) * 24 - (src4 + src6) * 8 + (128 - rounding)) / 256), 0, 255);          dst[5 * stride] = CLIP((((src3 + src8) + 5 * (((src5 + src6)<<2) - (src4 + src7)) + round_add) >> 5), 0, 255);
274            dst[6 * stride] = CLIP((((src4 + src9) + 5 * (((src6 + src7)<<2) - (src5 + src8)) + round_add) >> 5), 0, 255);
275            dst[7 * stride] = CLIP((((src5 + src10) + 5 * (((src7 + src8)<<2) - (src6 + src9)) + round_add) >> 5), 0, 255);
276    
277                  dst++;                  dst++;
278          src++;          src++;
279      }      }
280  }  }
281    
282  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)  void interpolate16x16_lowpass_v_c(uint8_t *dst, uint8_t *src, int32_t stride, int32_t rounding)
283  {  {
     uint8_t data[72];  
   
284          int32_t i;          int32_t i;
285            uint8_t round_add = 16 - rounding;
286    
287        for(i = 0; i < 17; i++)
     for(i = 0; i < 9; i++)  
288      {      {
289          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);          int32_t src0 = src[0];
290          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);          int32_t src1 = src[stride];
291          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);          int32_t src2 = src[2 * stride];
292          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);          int32_t src3 = src[3 * stride];
293          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);          int32_t src4 = src[4 * stride];
294          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);          int32_t src5 = src[5 * stride];
295          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);          int32_t src6 = src[6 * stride];
296          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 src7 = src[7 * stride];
297            int32_t src8 = src[8 * stride];
298            int32_t src9 = src[9 * stride];
299            int32_t src10 = src[10 * stride];
300            int32_t src11 = src[11 * stride];
301            int32_t src12 = src[12 * stride];
302            int32_t src13 = src[13 * stride];
303            int32_t src14 = src[14 * stride];
304            int32_t src15 = src[15 * stride];
305            int32_t src16 = src[16 * stride];
306    
307    
308            dst[0] = CLIP(((7 * ((src0<<1) - src2) +  23 * src1 + 3 * src3 - src4 + round_add) >> 5), 0, 255);
309            dst[stride] = CLIP(((19 * src1 + 20 * src2 - src5 + 3 * (src4 - src0 - (src3<<1)) + round_add) >> 5), 0, 255);
310            dst[2*stride] = CLIP(((20 * (src2 + src3) + (src0<<1) + 3 * (src5 - ((src1 + src4)<<1)) - src6 + round_add) >> 5), 0, 255);
311    
312            dst[3*stride] = CLIP(((20 * (src3 + src4) + 3 * ((src6 + src1) - ((src2 + src5)<<1)) - (src0 + src7) + round_add) >> 5), 0, 255);
313            dst[4*stride] = CLIP(((20 * (src4 + src5) - 3 * (((src3 + src6)<<1) - (src2 + src7)) - (src1 + src8) + round_add) >> 5), 0, 255);
314            dst[5*stride] = CLIP(((20 * (src5 + src6) - 3 * (((src4 + src7)<<1) - (src3 + src8)) - (src2 + src9) + round_add) >> 5), 0, 255);
315            dst[6*stride] = CLIP(((20 * (src6 + src7) - 3 * (((src5 + src8)<<1) - (src4 + src9)) - (src3 + src10) + round_add) >> 5), 0, 255);
316            dst[7*stride] = CLIP(((20 * (src7 + src8) - 3 * (((src6 + src9)<<1) - (src5 + src10)) - (src4 + src11) + round_add) >> 5), 0, 255);
317            dst[8*stride] = CLIP(((20 * (src8 + src9) - 3 * (((src7 + src10)<<1) - (src6 + src11)) - (src5 + src12) + round_add) >> 5), 0, 255);
318            dst[9*stride] = CLIP(((20 * (src9 + src10) - 3 * (((src8 + src11)<<1) - (src7 + src12)) - (src6 + src13) + round_add) >> 5), 0, 255);
319            dst[10*stride] = CLIP(((20 * (src10 + src11) - 3 * (((src9 + src12)<<1) - (src8 + src13)) - (src7 + src14) + round_add) >> 5), 0, 255);
320            dst[11*stride] = CLIP(((20 * (src11 + src12) - 3 * (((src10 + src13)<<1) - (src9 + src14)) - (src8 + src15) + round_add) >> 5), 0, 255);
321            dst[12*stride] = CLIP(((20 * (src12 + src13) - 3 * (((src11 + src14)<<1) - (src10 + src15)) - (src9 + src16) + round_add) >> 5), 0, 255);
322    
323            dst[13*stride] = CLIP(((20 * (src13 + src14) + (src16<<1) + 3 * (src11 - ((src12 + src15) << 1)) - src10 + round_add) >> 5), 0, 255);
324            dst[14*stride] = CLIP(((19 * src15 + 20 * src14 + 3 * (src12 - src16 - (src13 << 1)) - src11 + round_add) >> 5), 0, 255);
325            dst[15*stride] = CLIP(((23 * src15 + 7 * ((src16<<1) - src14) + 3 * src13 - src12 + round_add) >> 5), 0, 255);
326    
327          src += src_stride;                  dst++;
328                  dst2 += dst2_stride;          src++;
329        }
330      }      }
331    
332      for(i = 0; i < 8; i++)  void interpolate8x8_lowpass_v_c(uint8_t *dst, uint8_t *src, int32_t stride, int32_t rounding)
333      {      {
334          int32_t src0 = data[i];      int32_t i;
335          int32_t src1 = data[8 + i];          uint8_t round_add = 16 - rounding;
336          int32_t src2 = data[2 * 8 + i];  
337          int32_t src3 = data[3 * 8 + i];      for(i = 0; i < 9; i++)
338          int32_t src4 = data[4 * 8 + i];      {
339          int32_t src5 = data[5 * 8 + i];          int32_t src0 = src[0];
340          int32_t src6 = data[6 * 8 + i];          int32_t src1 = src[stride];
341          int32_t src7 = data[7 * 8 + i];          int32_t src2 = src[2 * stride];
342          int32_t src8 = data[8 * 8 + i];          int32_t src3 = src[3 * stride];
343            int32_t src4 = src[4 * stride];
344                  dst1[0] = CLIP((((src0 + src1) * 160 - (src0 + src2) * 48 + (src1 + src3) * 24 - (src2 + src4) * 8 + (128 - rounding)) / 256), 0, 255);          int32_t src5 = src[5 * stride];
345          dst1[dst1_stride] = CLIP((((src1 + src2) * 160 - (src0 + src3) * 48 + (src0 + src4) * 24 - (src1 + src5) * 8 + (128 - rounding)) / 256), 0, 255);          int32_t src6 = src[6 * stride];
346          dst1[2 * dst1_stride] = CLIP((((src2 + src3) * 160 - (src1 + src4) * 48 + (src0 + src5) * 24 - (src0 + src6) * 8 + (128 - rounding)) / 256), 0, 255);          int32_t src7 = src[7 * stride];
347          dst1[3 * dst1_stride] = CLIP((((src3 + src4) * 160 - (src2 + src5) * 48 + (src1 + src6) * 24 - (src0 + src7) * 8 + (128 - rounding)) / 256), 0, 255);          int32_t src8 = src[8 * stride];
348          dst1[4 * dst1_stride] = CLIP((((src4 + src5) * 160 - (src3 + src6) * 48 + (src2 + src7) * 24 - (src1 + src8) * 8 + (128 - rounding)) / 256), 0, 255);  
349          dst1[5 * dst1_stride] = CLIP((((src5 + src6) * 160 - (src4 + src7) * 48 + (src3 + src8) * 24 - (src2 + src8) * 8 + (128 - rounding)) / 256), 0, 255);          dst[0]                  = CLIP(((7 * ((src0<<1) - src2) + 23 * src1 + 3 * src3 - src4 + round_add) >> 5), 0, 255);
350          dst1[6 * dst1_stride] = CLIP((((src6 + src7) * 160 - (src5 + src8) * 48 + (src4 + src8) * 24 - (src3 + src7) * 8 + (128 - rounding)) / 256), 0, 255);          dst[stride]             = CLIP(((19 * src1 + 20 * src2 - src5 + 3 * (src4 - src0 - (src3 << 1)) + round_add) >> 5), 0, 255);
351          dst1[7 * dst1_stride] = CLIP((((src7 + src8) * 160 - (src6 + src8) * 48 + (src5 + src7) * 24 - (src4 + src6) * 8 + (128 - rounding)) / 256), 0, 255);          dst[2 * stride] = CLIP(((20 * (src2 + src3) + (src0<<1) + 3 * (src5 - ((src1 + src4) <<1 )) - src6 + round_add) >> 5), 0, 255);
352            dst[3 * stride] = CLIP(((20 * (src3 + src4) + 3 * ((src6 + src1) - ((src2 + src5)<<1)) - (src0 + src7) + round_add) >> 5), 0, 255);
353            dst[4 * stride] = CLIP(((20 * (src4 + src5) + 3 * ((src2 + src7) - ((src3 + src6)<<1)) - (src1 + src8) + round_add) >> 5), 0, 255);
354            dst[5 * stride] = CLIP(((20 * (src5 + src6) + (src8<<1) + 3 * (src3 - ((src4 + src7) << 1)) - src2 + round_add) >> 5), 0, 255);
355            dst[6 * stride] = CLIP(((19 * src7 + 20 * src6 - src3 + 3 * (src4 - src8 - (src5 << 1)) + round_add) >> 5), 0, 255);
356            dst[7 * stride] = CLIP(((7 * ((src8<<1) - src6) + 23 * src7 + 3 * src5 - src4 + round_add) >> 5), 0, 255);
357    
358                  dst1++;                  dst++;
359            src++;
360      }      }
361  }  }
362    
363  void interpolate8x8_bilinear2(uint8_t *dst, uint8_t *src1, uint8_t *src2, int32_t dst_stride, int32_t src_stride, int32_t rounding)  void interpolate16x16_lowpass_hv_c(uint8_t *dst1, uint8_t *dst2, uint8_t *src, int32_t stride, int32_t rounding)
364  {  {
365      int32_t i;      int32_t i;
366            uint8_t round_add = 16 - rounding;
367            uint8_t *h_ptr = dst2;
368    
369      for(i = 0; i < 8; i++)      for(i = 0; i < 17; i++)
370      {      {
371          dst[0] = (src1[0] + src2[0] + (1 - rounding)) >> 1;  
372          dst[1] = (src1[1] + src2[1] + (1 - rounding)) >> 1;          h_ptr[0] = CLIP(((7 * ((src[0]<<1) - src[2]) +  23 * src[1] + 3 * src[3] - src[4] + round_add) >> 5), 0, 255);
373          dst[2] = (src1[2] + src2[2] + (1 - rounding)) >> 1;          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);
374          dst[3] = (src1[3] + src2[3] + (1 - rounding)) >> 1;          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);
375          dst[4] = (src1[4] + src2[4] + (1 - rounding)) >> 1;  
376          dst[5] = (src1[5] + src2[5] + (1 - rounding)) >> 1;          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);
377          dst[6] = (src1[6] + src2[6] + (1 - rounding)) >> 1;          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);
378          dst[7] = (src1[7] + src2[7] + (1 - rounding)) >> 1;          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);
379            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);
380          dst += dst_stride;          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);
381          src1 += src_stride;          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);
382          src2 += 8;          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);
383            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);
384            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);
385            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);
386    
387            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);
388            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);
389            h_ptr[15] = CLIP(((23 * src[15] + 7 * ((src[16]<<1) - src[14]) + 3 * src[13] - src[12] + round_add) >> 5), 0, 255);
390    
391            h_ptr += stride;
392            src += stride;
393      }      }
394    
395            interpolate16x16_lowpass_v_c(dst1, dst2, stride, rounding);
396    
397  }  }
398    
399  void interpolate8x8_bilinear4(uint8_t *dst, uint8_t *src1, uint8_t *src2, uint8_t *src3, uint8_t *src4, int32_t stride, int32_t rounding)  void interpolate8x8_lowpass_hv_c(uint8_t *dst1, uint8_t *dst2, uint8_t *src, int32_t stride, int32_t rounding)
400  {  {
401      int32_t i;      int32_t i;
402            uint8_t round_add = 16 - rounding;
403            uint8_t *h_ptr = dst2;
404    
405      for(i = 0; i < 8; i++)      for(i = 0; i < 9; i++)
406      {      {
         dst[0] = (src1[0] + src2[0] + src3[0] + src4[0] + (2 - rounding)) >> 2;  
         dst[1] = (src1[1] + src2[1] + src3[1] + src4[1] + (2 - rounding)) >> 2;  
         dst[2] = (src1[2] + src2[2] + src3[2] + src4[2] + (2 - rounding)) >> 2;  
         dst[3] = (src1[3] + src2[3] + src3[3] + src4[3] + (2 - rounding)) >> 2;  
         dst[4] = (src1[4] + src2[4] + src3[4] + src4[4] + (2 - rounding)) >> 2;  
         dst[5] = (src1[5] + src2[5] + src3[5] + src4[5] + (2 - rounding)) >> 2;  
         dst[6] = (src1[6] + src2[6] + src3[6] + src4[6] + (2 - rounding)) >> 2;  
         dst[7] = (src1[7] + src2[7] + src3[7] + src4[7] + (2 - rounding)) >> 2;  
407    
408                  dst += stride;          h_ptr[0] = CLIP(((7 * ((src[0]<<1) - src[2]) + 23 * src[1] + 3 * src[3] - src[4] + round_add) >> 5), 0, 255);
409          src1 += stride;          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);
410          src2 += 8;          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);
411          src3 += 8;          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);
412          src4 += 8;          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);
413            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);
414            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);
415            h_ptr[7] = CLIP(((23 * src[7] + 7 * ((src[8]<<1) - src[6]) + 3 * src[5] - src[4] + round_add) >> 5), 0, 255);
416    
417            h_ptr += stride;
418            src += stride;
419      }      }
420    
421            interpolate8x8_lowpass_v_c(dst1, dst2, stride, rounding);
422    
423  }  }

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