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rv40dsp.c
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1 /*
2  * RV40 decoder motion compensation functions
3  * Copyright (c) 2008 Konstantin Shishkov
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * RV40 decoder motion compensation functions
25  */
26 
27 #include "libavutil/common.h"
28 #include "libavutil/intreadwrite.h"
29 #include "avcodec.h"
30 #include "h264qpel.h"
31 #include "mathops.h"
32 #include "pixels.h"
33 #include "rnd_avg.h"
34 #include "rv34dsp.h"
35 #include "libavutil/avassert.h"
36 
37 #define RV40_LOWPASS(OPNAME, OP) \
38 static void OPNAME ## rv40_qpel8_h_lowpass(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride,\
39  const int h, const int C1, const int C2, const int SHIFT){\
40  const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;\
41  int i;\
42  for(i = 0; i < h; i++)\
43  {\
44  OP(dst[0], (src[-2] + src[ 3] - 5*(src[-1]+src[2]) + src[0]*C1 + src[1]*C2 + (1<<(SHIFT-1))) >> SHIFT);\
45  OP(dst[1], (src[-1] + src[ 4] - 5*(src[ 0]+src[3]) + src[1]*C1 + src[2]*C2 + (1<<(SHIFT-1))) >> SHIFT);\
46  OP(dst[2], (src[ 0] + src[ 5] - 5*(src[ 1]+src[4]) + src[2]*C1 + src[3]*C2 + (1<<(SHIFT-1))) >> SHIFT);\
47  OP(dst[3], (src[ 1] + src[ 6] - 5*(src[ 2]+src[5]) + src[3]*C1 + src[4]*C2 + (1<<(SHIFT-1))) >> SHIFT);\
48  OP(dst[4], (src[ 2] + src[ 7] - 5*(src[ 3]+src[6]) + src[4]*C1 + src[5]*C2 + (1<<(SHIFT-1))) >> SHIFT);\
49  OP(dst[5], (src[ 3] + src[ 8] - 5*(src[ 4]+src[7]) + src[5]*C1 + src[6]*C2 + (1<<(SHIFT-1))) >> SHIFT);\
50  OP(dst[6], (src[ 4] + src[ 9] - 5*(src[ 5]+src[8]) + src[6]*C1 + src[7]*C2 + (1<<(SHIFT-1))) >> SHIFT);\
51  OP(dst[7], (src[ 5] + src[10] - 5*(src[ 6]+src[9]) + src[7]*C1 + src[8]*C2 + (1<<(SHIFT-1))) >> SHIFT);\
52  dst += dstStride;\
53  src += srcStride;\
54  }\
55 }\
56 \
57 static void OPNAME ## rv40_qpel8_v_lowpass(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride,\
58  const int w, const int C1, const int C2, const int SHIFT){\
59  const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;\
60  int i;\
61  for(i = 0; i < w; i++)\
62  {\
63  const int srcB = src[-2*srcStride];\
64  const int srcA = src[-1*srcStride];\
65  const int src0 = src[0 *srcStride];\
66  const int src1 = src[1 *srcStride];\
67  const int src2 = src[2 *srcStride];\
68  const int src3 = src[3 *srcStride];\
69  const int src4 = src[4 *srcStride];\
70  const int src5 = src[5 *srcStride];\
71  const int src6 = src[6 *srcStride];\
72  const int src7 = src[7 *srcStride];\
73  const int src8 = src[8 *srcStride];\
74  const int src9 = src[9 *srcStride];\
75  const int src10 = src[10*srcStride];\
76  OP(dst[0*dstStride], (srcB + src3 - 5*(srcA+src2) + src0*C1 + src1*C2 + (1<<(SHIFT-1))) >> SHIFT);\
77  OP(dst[1*dstStride], (srcA + src4 - 5*(src0+src3) + src1*C1 + src2*C2 + (1<<(SHIFT-1))) >> SHIFT);\
78  OP(dst[2*dstStride], (src0 + src5 - 5*(src1+src4) + src2*C1 + src3*C2 + (1<<(SHIFT-1))) >> SHIFT);\
79  OP(dst[3*dstStride], (src1 + src6 - 5*(src2+src5) + src3*C1 + src4*C2 + (1<<(SHIFT-1))) >> SHIFT);\
80  OP(dst[4*dstStride], (src2 + src7 - 5*(src3+src6) + src4*C1 + src5*C2 + (1<<(SHIFT-1))) >> SHIFT);\
81  OP(dst[5*dstStride], (src3 + src8 - 5*(src4+src7) + src5*C1 + src6*C2 + (1<<(SHIFT-1))) >> SHIFT);\
82  OP(dst[6*dstStride], (src4 + src9 - 5*(src5+src8) + src6*C1 + src7*C2 + (1<<(SHIFT-1))) >> SHIFT);\
83  OP(dst[7*dstStride], (src5 + src10 - 5*(src6+src9) + src7*C1 + src8*C2 + (1<<(SHIFT-1))) >> SHIFT);\
84  dst++;\
85  src++;\
86  }\
87 }\
88 \
89 static void OPNAME ## rv40_qpel16_v_lowpass(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride,\
90  const int w, const int C1, const int C2, const int SHIFT){\
91  OPNAME ## rv40_qpel8_v_lowpass(dst , src , dstStride, srcStride, 8, C1, C2, SHIFT);\
92  OPNAME ## rv40_qpel8_v_lowpass(dst+8, src+8, dstStride, srcStride, 8, C1, C2, SHIFT);\
93  src += 8*srcStride;\
94  dst += 8*dstStride;\
95  OPNAME ## rv40_qpel8_v_lowpass(dst , src , dstStride, srcStride, w-8, C1, C2, SHIFT);\
96  OPNAME ## rv40_qpel8_v_lowpass(dst+8, src+8, dstStride, srcStride, w-8, C1, C2, SHIFT);\
97 }\
98 \
99 static void OPNAME ## rv40_qpel16_h_lowpass(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride,\
100  const int h, const int C1, const int C2, const int SHIFT){\
101  OPNAME ## rv40_qpel8_h_lowpass(dst , src , dstStride, srcStride, 8, C1, C2, SHIFT);\
102  OPNAME ## rv40_qpel8_h_lowpass(dst+8, src+8, dstStride, srcStride, 8, C1, C2, SHIFT);\
103  src += 8*srcStride;\
104  dst += 8*dstStride;\
105  OPNAME ## rv40_qpel8_h_lowpass(dst , src , dstStride, srcStride, h-8, C1, C2, SHIFT);\
106  OPNAME ## rv40_qpel8_h_lowpass(dst+8, src+8, dstStride, srcStride, h-8, C1, C2, SHIFT);\
107 }\
108 \
109 
110 #define RV40_MC(OPNAME, SIZE) \
111 static void OPNAME ## rv40_qpel ## SIZE ## _mc10_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)\
112 {\
113  OPNAME ## rv40_qpel ## SIZE ## _h_lowpass(dst, src, stride, stride, SIZE, 52, 20, 6);\
114 }\
115 \
116 static void OPNAME ## rv40_qpel ## SIZE ## _mc30_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)\
117 {\
118  OPNAME ## rv40_qpel ## SIZE ## _h_lowpass(dst, src, stride, stride, SIZE, 20, 52, 6);\
119 }\
120 \
121 static void OPNAME ## rv40_qpel ## SIZE ## _mc01_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)\
122 {\
123  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, src, stride, stride, SIZE, 52, 20, 6);\
124 }\
125 \
126 static void OPNAME ## rv40_qpel ## SIZE ## _mc11_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)\
127 {\
128  uint8_t full[SIZE*(SIZE+5)];\
129  uint8_t * const full_mid = full + SIZE*2;\
130  put_rv40_qpel ## SIZE ## _h_lowpass(full, src - 2*stride, SIZE, stride, SIZE+5, 52, 20, 6);\
131  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, full_mid, stride, SIZE, SIZE, 52, 20, 6);\
132 }\
133 \
134 static void OPNAME ## rv40_qpel ## SIZE ## _mc21_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)\
135 {\
136  uint8_t full[SIZE*(SIZE+5)];\
137  uint8_t * const full_mid = full + SIZE*2;\
138  put_rv40_qpel ## SIZE ## _h_lowpass(full, src - 2*stride, SIZE, stride, SIZE+5, 20, 20, 5);\
139  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, full_mid, stride, SIZE, SIZE, 52, 20, 6);\
140 }\
141 \
142 static void OPNAME ## rv40_qpel ## SIZE ## _mc31_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)\
143 {\
144  uint8_t full[SIZE*(SIZE+5)];\
145  uint8_t * const full_mid = full + SIZE*2;\
146  put_rv40_qpel ## SIZE ## _h_lowpass(full, src - 2*stride, SIZE, stride, SIZE+5, 20, 52, 6);\
147  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, full_mid, stride, SIZE, SIZE, 52, 20, 6);\
148 }\
149 \
150 static void OPNAME ## rv40_qpel ## SIZE ## _mc12_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)\
151 {\
152  uint8_t full[SIZE*(SIZE+5)];\
153  uint8_t * const full_mid = full + SIZE*2;\
154  put_rv40_qpel ## SIZE ## _h_lowpass(full, src - 2*stride, SIZE, stride, SIZE+5, 52, 20, 6);\
155  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, full_mid, stride, SIZE, SIZE, 20, 20, 5);\
156 }\
157 \
158 static void OPNAME ## rv40_qpel ## SIZE ## _mc22_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)\
159 {\
160  uint8_t full[SIZE*(SIZE+5)];\
161  uint8_t * const full_mid = full + SIZE*2;\
162  put_rv40_qpel ## SIZE ## _h_lowpass(full, src - 2*stride, SIZE, stride, SIZE+5, 20, 20, 5);\
163  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, full_mid, stride, SIZE, SIZE, 20, 20, 5);\
164 }\
165 \
166 static void OPNAME ## rv40_qpel ## SIZE ## _mc32_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)\
167 {\
168  uint8_t full[SIZE*(SIZE+5)];\
169  uint8_t * const full_mid = full + SIZE*2;\
170  put_rv40_qpel ## SIZE ## _h_lowpass(full, src - 2*stride, SIZE, stride, SIZE+5, 20, 52, 6);\
171  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, full_mid, stride, SIZE, SIZE, 20, 20, 5);\
172 }\
173 \
174 static void OPNAME ## rv40_qpel ## SIZE ## _mc03_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)\
175 {\
176  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, src, stride, stride, SIZE, 20, 52, 6);\
177 }\
178 \
179 static void OPNAME ## rv40_qpel ## SIZE ## _mc13_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)\
180 {\
181  uint8_t full[SIZE*(SIZE+5)];\
182  uint8_t * const full_mid = full + SIZE*2;\
183  put_rv40_qpel ## SIZE ## _h_lowpass(full, src - 2*stride, SIZE, stride, SIZE+5, 52, 20, 6);\
184  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, full_mid, stride, SIZE, SIZE, 20, 52, 6);\
185 }\
186 \
187 static void OPNAME ## rv40_qpel ## SIZE ## _mc23_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)\
188 {\
189  uint8_t full[SIZE*(SIZE+5)];\
190  uint8_t * const full_mid = full + SIZE*2;\
191  put_rv40_qpel ## SIZE ## _h_lowpass(full, src - 2*stride, SIZE, stride, SIZE+5, 20, 20, 5);\
192  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, full_mid, stride, SIZE, SIZE, 20, 52, 6);\
193 }\
194 \
195 
196 #define op_avg(a, b) a = (((a)+cm[b]+1)>>1)
197 #define op_put(a, b) a = cm[b]
198 
199 RV40_LOWPASS(put_ , op_put)
200 RV40_LOWPASS(avg_ , op_avg)
201 
202 #undef op_avg
203 #undef op_put
204 
205 RV40_MC(put_, 8)
206 RV40_MC(put_, 16)
207 RV40_MC(avg_, 8)
208 RV40_MC(avg_, 16)
209 
210 #define PIXOP2(OPNAME, OP) \
211 static inline void OPNAME ## _pixels8_xy2_8_c(uint8_t *block, \
212  const uint8_t *pixels, \
213  ptrdiff_t line_size, \
214  int h) \
215 { \
216  /* FIXME HIGH BIT DEPTH */ \
217  int j; \
218  \
219  for (j = 0; j < 2; j++) { \
220  int i; \
221  const uint32_t a = AV_RN32(pixels); \
222  const uint32_t b = AV_RN32(pixels + 1); \
223  uint32_t l0 = (a & 0x03030303UL) + \
224  (b & 0x03030303UL) + \
225  0x02020202UL; \
226  uint32_t h0 = ((a & 0xFCFCFCFCUL) >> 2) + \
227  ((b & 0xFCFCFCFCUL) >> 2); \
228  uint32_t l1, h1; \
229  \
230  pixels += line_size; \
231  for (i = 0; i < h; i += 2) { \
232  uint32_t a = AV_RN32(pixels); \
233  uint32_t b = AV_RN32(pixels + 1); \
234  l1 = (a & 0x03030303UL) + \
235  (b & 0x03030303UL); \
236  h1 = ((a & 0xFCFCFCFCUL) >> 2) + \
237  ((b & 0xFCFCFCFCUL) >> 2); \
238  OP(*((uint32_t *) block), \
239  h0 + h1 + (((l0 + l1) >> 2) & 0x0F0F0F0FUL)); \
240  pixels += line_size; \
241  block += line_size; \
242  a = AV_RN32(pixels); \
243  b = AV_RN32(pixels + 1); \
244  l0 = (a & 0x03030303UL) + \
245  (b & 0x03030303UL) + \
246  0x02020202UL; \
247  h0 = ((a & 0xFCFCFCFCUL) >> 2) + \
248  ((b & 0xFCFCFCFCUL) >> 2); \
249  OP(*((uint32_t *) block), \
250  h0 + h1 + (((l0 + l1) >> 2) & 0x0F0F0F0FUL)); \
251  pixels += line_size; \
252  block += line_size; \
253  } \
254  pixels += 4 - line_size * (h + 1); \
255  block += 4 - line_size * h; \
256  } \
257 } \
258  \
259 CALL_2X_PIXELS(OPNAME ## _pixels16_xy2_8_c, \
260  OPNAME ## _pixels8_xy2_8_c, \
261  8) \
262 
263 #define op_avg(a, b) a = rnd_avg32(a, b)
264 #define op_put(a, b) a = b
265 PIXOP2(avg, op_avg)
266 PIXOP2(put, op_put)
267 #undef op_avg
268 #undef op_put
269 
270 static void put_rv40_qpel16_mc33_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)
271 {
272  put_pixels16_xy2_8_c(dst, src, stride, 16);
273 }
274 static void avg_rv40_qpel16_mc33_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)
275 {
276  avg_pixels16_xy2_8_c(dst, src, stride, 16);
277 }
278 static void put_rv40_qpel8_mc33_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)
279 {
280  put_pixels8_xy2_8_c(dst, src, stride, 8);
281 }
282 static void avg_rv40_qpel8_mc33_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)
283 {
284  avg_pixels8_xy2_8_c(dst, src, stride, 8);
285 }
286 
287 static const int rv40_bias[4][4] = {
288  { 0, 16, 32, 16 },
289  { 32, 28, 32, 28 },
290  { 0, 32, 16, 32 },
291  { 32, 28, 32, 28 }
292 };
293 
294 #define RV40_CHROMA_MC(OPNAME, OP)\
295 static void OPNAME ## rv40_chroma_mc4_c(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int x, int y){\
296  const int A = (8-x) * (8-y);\
297  const int B = ( x) * (8-y);\
298  const int C = (8-x) * ( y);\
299  const int D = ( x) * ( y);\
300  int i;\
301  int bias = rv40_bias[y>>1][x>>1];\
302  \
303  av_assert2(x<8 && y<8 && x>=0 && y>=0);\
304 \
305  if(D){\
306  for(i = 0; i < h; i++){\
307  OP(dst[0], (A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1] + bias));\
308  OP(dst[1], (A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2] + bias));\
309  OP(dst[2], (A*src[2] + B*src[3] + C*src[stride+2] + D*src[stride+3] + bias));\
310  OP(dst[3], (A*src[3] + B*src[4] + C*src[stride+3] + D*src[stride+4] + bias));\
311  dst += stride;\
312  src += stride;\
313  }\
314  }else{\
315  const int E = B + C;\
316  const int step = C ? stride : 1;\
317  for(i = 0; i < h; i++){\
318  OP(dst[0], (A*src[0] + E*src[step+0] + bias));\
319  OP(dst[1], (A*src[1] + E*src[step+1] + bias));\
320  OP(dst[2], (A*src[2] + E*src[step+2] + bias));\
321  OP(dst[3], (A*src[3] + E*src[step+3] + bias));\
322  dst += stride;\
323  src += stride;\
324  }\
325  }\
326 }\
327 \
328 static void OPNAME ## rv40_chroma_mc8_c(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int x, int y){\
329  const int A = (8-x) * (8-y);\
330  const int B = ( x) * (8-y);\
331  const int C = (8-x) * ( y);\
332  const int D = ( x) * ( y);\
333  int i;\
334  int bias = rv40_bias[y>>1][x>>1];\
335  \
336  av_assert2(x<8 && y<8 && x>=0 && y>=0);\
337 \
338  if(D){\
339  for(i = 0; i < h; i++){\
340  OP(dst[0], (A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1] + bias));\
341  OP(dst[1], (A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2] + bias));\
342  OP(dst[2], (A*src[2] + B*src[3] + C*src[stride+2] + D*src[stride+3] + bias));\
343  OP(dst[3], (A*src[3] + B*src[4] + C*src[stride+3] + D*src[stride+4] + bias));\
344  OP(dst[4], (A*src[4] + B*src[5] + C*src[stride+4] + D*src[stride+5] + bias));\
345  OP(dst[5], (A*src[5] + B*src[6] + C*src[stride+5] + D*src[stride+6] + bias));\
346  OP(dst[6], (A*src[6] + B*src[7] + C*src[stride+6] + D*src[stride+7] + bias));\
347  OP(dst[7], (A*src[7] + B*src[8] + C*src[stride+7] + D*src[stride+8] + bias));\
348  dst += stride;\
349  src += stride;\
350  }\
351  }else{\
352  const int E = B + C;\
353  const int step = C ? stride : 1;\
354  for(i = 0; i < h; i++){\
355  OP(dst[0], (A*src[0] + E*src[step+0] + bias));\
356  OP(dst[1], (A*src[1] + E*src[step+1] + bias));\
357  OP(dst[2], (A*src[2] + E*src[step+2] + bias));\
358  OP(dst[3], (A*src[3] + E*src[step+3] + bias));\
359  OP(dst[4], (A*src[4] + E*src[step+4] + bias));\
360  OP(dst[5], (A*src[5] + E*src[step+5] + bias));\
361  OP(dst[6], (A*src[6] + E*src[step+6] + bias));\
362  OP(dst[7], (A*src[7] + E*src[step+7] + bias));\
363  dst += stride;\
364  src += stride;\
365  }\
366  }\
367 }
368 
369 #define op_avg(a, b) a = (((a)+((b)>>6)+1)>>1)
370 #define op_put(a, b) a = ((b)>>6)
371 
372 RV40_CHROMA_MC(put_, op_put)
373 RV40_CHROMA_MC(avg_, op_avg)
374 
375 #define RV40_WEIGHT_FUNC(size) \
376 static void rv40_weight_func_rnd_ ## size (uint8_t *dst, uint8_t *src1, uint8_t *src2, int w1, int w2, ptrdiff_t stride)\
377 {\
378  int i, j;\
379 \
380  for (j = 0; j < size; j++) {\
381  for (i = 0; i < size; i++)\
382  dst[i] = (((w2 * src1[i]) >> 9) + ((w1 * src2[i]) >> 9) + 0x10) >> 5;\
383  src1 += stride;\
384  src2 += stride;\
385  dst += stride;\
386  }\
387 }\
388 static void rv40_weight_func_nornd_ ## size (uint8_t *dst, uint8_t *src1, uint8_t *src2, int w1, int w2, ptrdiff_t stride)\
389 {\
390  int i, j;\
391 \
392  for (j = 0; j < size; j++) {\
393  for (i = 0; i < size; i++)\
394  dst[i] = (w2 * src1[i] + w1 * src2[i] + 0x10) >> 5;\
395  src1 += stride;\
396  src2 += stride;\
397  dst += stride;\
398  }\
399 }
400 
401 RV40_WEIGHT_FUNC(16)
402 RV40_WEIGHT_FUNC(8)
403 
404 /**
405  * dither values for deblocking filter - left/top values
406  */
407 static const uint8_t rv40_dither_l[16] = {
408  0x40, 0x50, 0x20, 0x60, 0x30, 0x50, 0x40, 0x30,
409  0x50, 0x40, 0x50, 0x30, 0x60, 0x20, 0x50, 0x40
410 };
411 
412 /**
413  * dither values for deblocking filter - right/bottom values
414  */
415 static const uint8_t rv40_dither_r[16] = {
416  0x40, 0x30, 0x60, 0x20, 0x50, 0x30, 0x30, 0x40,
417  0x40, 0x40, 0x50, 0x30, 0x20, 0x60, 0x30, 0x40
418 };
419 
420 #define CLIP_SYMM(a, b) av_clip(a, -(b), b)
421 /**
422  * weaker deblocking very similar to the one described in 4.4.2 of JVT-A003r1
423  */
424 static av_always_inline void rv40_weak_loop_filter(uint8_t *src,
425  const int step,
426  const ptrdiff_t stride,
427  const int filter_p1,
428  const int filter_q1,
429  const int alpha,
430  const int beta,
431  const int lim_p0q0,
432  const int lim_q1,
433  const int lim_p1)
434 {
435  const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
436  int i, t, u, diff;
437 
438  for (i = 0; i < 4; i++, src += stride) {
439  int diff_p1p0 = src[-2*step] - src[-1*step];
440  int diff_q1q0 = src[ 1*step] - src[ 0*step];
441  int diff_p1p2 = src[-2*step] - src[-3*step];
442  int diff_q1q2 = src[ 1*step] - src[ 2*step];
443 
444  t = src[0*step] - src[-1*step];
445  if (!t)
446  continue;
447 
448  u = (alpha * FFABS(t)) >> 7;
449  if (u > 3 - (filter_p1 && filter_q1))
450  continue;
451 
452  t <<= 2;
453  if (filter_p1 && filter_q1)
454  t += src[-2*step] - src[1*step];
455 
456  diff = CLIP_SYMM((t + 4) >> 3, lim_p0q0);
457  src[-1*step] = cm[src[-1*step] + diff];
458  src[ 0*step] = cm[src[ 0*step] - diff];
459 
460  if (filter_p1 && FFABS(diff_p1p2) <= beta) {
461  t = (diff_p1p0 + diff_p1p2 - diff) >> 1;
462  src[-2*step] = cm[src[-2*step] - CLIP_SYMM(t, lim_p1)];
463  }
464 
465  if (filter_q1 && FFABS(diff_q1q2) <= beta) {
466  t = (diff_q1q0 + diff_q1q2 + diff) >> 1;
467  src[ 1*step] = cm[src[ 1*step] - CLIP_SYMM(t, lim_q1)];
468  }
469  }
470 }
471 
472 static void rv40_h_weak_loop_filter(uint8_t *src, const ptrdiff_t stride,
473  const int filter_p1, const int filter_q1,
474  const int alpha, const int beta,
475  const int lim_p0q0, const int lim_q1,
476  const int lim_p1)
477 {
478  rv40_weak_loop_filter(src, stride, 1, filter_p1, filter_q1,
479  alpha, beta, lim_p0q0, lim_q1, lim_p1);
480 }
481 
482 static void rv40_v_weak_loop_filter(uint8_t *src, const ptrdiff_t stride,
483  const int filter_p1, const int filter_q1,
484  const int alpha, const int beta,
485  const int lim_p0q0, const int lim_q1,
486  const int lim_p1)
487 {
488  rv40_weak_loop_filter(src, 1, stride, filter_p1, filter_q1,
489  alpha, beta, lim_p0q0, lim_q1, lim_p1);
490 }
491 
492 static av_always_inline void rv40_strong_loop_filter(uint8_t *src,
493  const int step,
494  const ptrdiff_t stride,
495  const int alpha,
496  const int lims,
497  const int dmode,
498  const int chroma)
499 {
500  int i;
501 
502  for(i = 0; i < 4; i++, src += stride){
503  int sflag, p0, q0, p1, q1;
504  int t = src[0*step] - src[-1*step];
505 
506  if (!t)
507  continue;
508 
509  sflag = (alpha * FFABS(t)) >> 7;
510  if (sflag > 1)
511  continue;
512 
513  p0 = (25*src[-3*step] + 26*src[-2*step] + 26*src[-1*step] +
514  26*src[ 0*step] + 25*src[ 1*step] +
515  rv40_dither_l[dmode + i]) >> 7;
516 
517  q0 = (25*src[-2*step] + 26*src[-1*step] + 26*src[ 0*step] +
518  26*src[ 1*step] + 25*src[ 2*step] +
519  rv40_dither_r[dmode + i]) >> 7;
520 
521  if (sflag) {
522  p0 = av_clip(p0, src[-1*step] - lims, src[-1*step] + lims);
523  q0 = av_clip(q0, src[ 0*step] - lims, src[ 0*step] + lims);
524  }
525 
526  p1 = (25*src[-4*step] + 26*src[-3*step] + 26*src[-2*step] + 26*p0 +
527  25*src[ 0*step] + rv40_dither_l[dmode + i]) >> 7;
528  q1 = (25*src[-1*step] + 26*q0 + 26*src[ 1*step] + 26*src[ 2*step] +
529  25*src[ 3*step] + rv40_dither_r[dmode + i]) >> 7;
530 
531  if (sflag) {
532  p1 = av_clip(p1, src[-2*step] - lims, src[-2*step] + lims);
533  q1 = av_clip(q1, src[ 1*step] - lims, src[ 1*step] + lims);
534  }
535 
536  src[-2*step] = p1;
537  src[-1*step] = p0;
538  src[ 0*step] = q0;
539  src[ 1*step] = q1;
540 
541  if(!chroma){
542  src[-3*step] = (25*src[-1*step] + 26*src[-2*step] +
543  51*src[-3*step] + 26*src[-4*step] + 64) >> 7;
544  src[ 2*step] = (25*src[ 0*step] + 26*src[ 1*step] +
545  51*src[ 2*step] + 26*src[ 3*step] + 64) >> 7;
546  }
547  }
548 }
549 
550 static void rv40_h_strong_loop_filter(uint8_t *src, const ptrdiff_t stride,
551  const int alpha, const int lims,
552  const int dmode, const int chroma)
553 {
554  rv40_strong_loop_filter(src, stride, 1, alpha, lims, dmode, chroma);
555 }
556 
557 static void rv40_v_strong_loop_filter(uint8_t *src, const ptrdiff_t stride,
558  const int alpha, const int lims,
559  const int dmode, const int chroma)
560 {
561  rv40_strong_loop_filter(src, 1, stride, alpha, lims, dmode, chroma);
562 }
563 
564 static av_always_inline int rv40_loop_filter_strength(uint8_t *src,
565  int step, ptrdiff_t stride,
566  int beta, int beta2,
567  int edge,
568  int *p1, int *q1)
569 {
570  int sum_p1p0 = 0, sum_q1q0 = 0, sum_p1p2 = 0, sum_q1q2 = 0;
571  int strong0 = 0, strong1 = 0;
572  uint8_t *ptr;
573  int i;
574 
575  for (i = 0, ptr = src; i < 4; i++, ptr += stride) {
576  sum_p1p0 += ptr[-2*step] - ptr[-1*step];
577  sum_q1q0 += ptr[ 1*step] - ptr[ 0*step];
578  }
579 
580  *p1 = FFABS(sum_p1p0) < (beta << 2);
581  *q1 = FFABS(sum_q1q0) < (beta << 2);
582 
583  if(!*p1 && !*q1)
584  return 0;
585 
586  if (!edge)
587  return 0;
588 
589  for (i = 0, ptr = src; i < 4; i++, ptr += stride) {
590  sum_p1p2 += ptr[-2*step] - ptr[-3*step];
591  sum_q1q2 += ptr[ 1*step] - ptr[ 2*step];
592  }
593 
594  strong0 = *p1 && (FFABS(sum_p1p2) < beta2);
595  strong1 = *q1 && (FFABS(sum_q1q2) < beta2);
596 
597  return strong0 && strong1;
598 }
599 
600 static int rv40_h_loop_filter_strength(uint8_t *src, ptrdiff_t stride,
601  int beta, int beta2, int edge,
602  int *p1, int *q1)
603 {
604  return rv40_loop_filter_strength(src, stride, 1, beta, beta2, edge, p1, q1);
605 }
606 
607 static int rv40_v_loop_filter_strength(uint8_t *src, ptrdiff_t stride,
608  int beta, int beta2, int edge,
609  int *p1, int *q1)
610 {
611  return rv40_loop_filter_strength(src, 1, stride, beta, beta2, edge, p1, q1);
612 }
613 
614 av_cold void ff_rv40dsp_init(RV34DSPContext *c)
615 {
616  H264QpelContext qpel;
617 
618  ff_rv34dsp_init(c);
619  ff_h264qpel_init(&qpel, 8);
620 
621  c->put_pixels_tab[0][ 0] = qpel.put_h264_qpel_pixels_tab[0][0];
622  c->put_pixels_tab[0][ 1] = put_rv40_qpel16_mc10_c;
623  c->put_pixels_tab[0][ 2] = qpel.put_h264_qpel_pixels_tab[0][2];
624  c->put_pixels_tab[0][ 3] = put_rv40_qpel16_mc30_c;
625  c->put_pixels_tab[0][ 4] = put_rv40_qpel16_mc01_c;
626  c->put_pixels_tab[0][ 5] = put_rv40_qpel16_mc11_c;
627  c->put_pixels_tab[0][ 6] = put_rv40_qpel16_mc21_c;
628  c->put_pixels_tab[0][ 7] = put_rv40_qpel16_mc31_c;
629  c->put_pixels_tab[0][ 8] = qpel.put_h264_qpel_pixels_tab[0][8];
630  c->put_pixels_tab[0][ 9] = put_rv40_qpel16_mc12_c;
631  c->put_pixels_tab[0][10] = put_rv40_qpel16_mc22_c;
632  c->put_pixels_tab[0][11] = put_rv40_qpel16_mc32_c;
633  c->put_pixels_tab[0][12] = put_rv40_qpel16_mc03_c;
634  c->put_pixels_tab[0][13] = put_rv40_qpel16_mc13_c;
635  c->put_pixels_tab[0][14] = put_rv40_qpel16_mc23_c;
636  c->put_pixels_tab[0][15] = put_rv40_qpel16_mc33_c;
637  c->avg_pixels_tab[0][ 0] = qpel.avg_h264_qpel_pixels_tab[0][0];
638  c->avg_pixels_tab[0][ 1] = avg_rv40_qpel16_mc10_c;
639  c->avg_pixels_tab[0][ 2] = qpel.avg_h264_qpel_pixels_tab[0][2];
640  c->avg_pixels_tab[0][ 3] = avg_rv40_qpel16_mc30_c;
641  c->avg_pixels_tab[0][ 4] = avg_rv40_qpel16_mc01_c;
642  c->avg_pixels_tab[0][ 5] = avg_rv40_qpel16_mc11_c;
643  c->avg_pixels_tab[0][ 6] = avg_rv40_qpel16_mc21_c;
644  c->avg_pixels_tab[0][ 7] = avg_rv40_qpel16_mc31_c;
645  c->avg_pixels_tab[0][ 8] = qpel.avg_h264_qpel_pixels_tab[0][8];
646  c->avg_pixels_tab[0][ 9] = avg_rv40_qpel16_mc12_c;
647  c->avg_pixels_tab[0][10] = avg_rv40_qpel16_mc22_c;
648  c->avg_pixels_tab[0][11] = avg_rv40_qpel16_mc32_c;
649  c->avg_pixels_tab[0][12] = avg_rv40_qpel16_mc03_c;
650  c->avg_pixels_tab[0][13] = avg_rv40_qpel16_mc13_c;
651  c->avg_pixels_tab[0][14] = avg_rv40_qpel16_mc23_c;
652  c->avg_pixels_tab[0][15] = avg_rv40_qpel16_mc33_c;
653  c->put_pixels_tab[1][ 0] = qpel.put_h264_qpel_pixels_tab[1][0];
654  c->put_pixels_tab[1][ 1] = put_rv40_qpel8_mc10_c;
655  c->put_pixels_tab[1][ 2] = qpel.put_h264_qpel_pixels_tab[1][2];
656  c->put_pixels_tab[1][ 3] = put_rv40_qpel8_mc30_c;
657  c->put_pixels_tab[1][ 4] = put_rv40_qpel8_mc01_c;
658  c->put_pixels_tab[1][ 5] = put_rv40_qpel8_mc11_c;
659  c->put_pixels_tab[1][ 6] = put_rv40_qpel8_mc21_c;
660  c->put_pixels_tab[1][ 7] = put_rv40_qpel8_mc31_c;
661  c->put_pixels_tab[1][ 8] = qpel.put_h264_qpel_pixels_tab[1][8];
662  c->put_pixels_tab[1][ 9] = put_rv40_qpel8_mc12_c;
663  c->put_pixels_tab[1][10] = put_rv40_qpel8_mc22_c;
664  c->put_pixels_tab[1][11] = put_rv40_qpel8_mc32_c;
665  c->put_pixels_tab[1][12] = put_rv40_qpel8_mc03_c;
666  c->put_pixels_tab[1][13] = put_rv40_qpel8_mc13_c;
667  c->put_pixels_tab[1][14] = put_rv40_qpel8_mc23_c;
668  c->put_pixels_tab[1][15] = put_rv40_qpel8_mc33_c;
669  c->avg_pixels_tab[1][ 0] = qpel.avg_h264_qpel_pixels_tab[1][0];
670  c->avg_pixels_tab[1][ 1] = avg_rv40_qpel8_mc10_c;
671  c->avg_pixels_tab[1][ 2] = qpel.avg_h264_qpel_pixels_tab[1][2];
672  c->avg_pixels_tab[1][ 3] = avg_rv40_qpel8_mc30_c;
673  c->avg_pixels_tab[1][ 4] = avg_rv40_qpel8_mc01_c;
674  c->avg_pixels_tab[1][ 5] = avg_rv40_qpel8_mc11_c;
675  c->avg_pixels_tab[1][ 6] = avg_rv40_qpel8_mc21_c;
676  c->avg_pixels_tab[1][ 7] = avg_rv40_qpel8_mc31_c;
677  c->avg_pixels_tab[1][ 8] = qpel.avg_h264_qpel_pixels_tab[1][8];
678  c->avg_pixels_tab[1][ 9] = avg_rv40_qpel8_mc12_c;
679  c->avg_pixels_tab[1][10] = avg_rv40_qpel8_mc22_c;
680  c->avg_pixels_tab[1][11] = avg_rv40_qpel8_mc32_c;
681  c->avg_pixels_tab[1][12] = avg_rv40_qpel8_mc03_c;
682  c->avg_pixels_tab[1][13] = avg_rv40_qpel8_mc13_c;
683  c->avg_pixels_tab[1][14] = avg_rv40_qpel8_mc23_c;
684  c->avg_pixels_tab[1][15] = avg_rv40_qpel8_mc33_c;
685 
686  c->put_chroma_pixels_tab[0] = put_rv40_chroma_mc8_c;
687  c->put_chroma_pixels_tab[1] = put_rv40_chroma_mc4_c;
688  c->avg_chroma_pixels_tab[0] = avg_rv40_chroma_mc8_c;
689  c->avg_chroma_pixels_tab[1] = avg_rv40_chroma_mc4_c;
690 
691  c->rv40_weight_pixels_tab[0][0] = rv40_weight_func_rnd_16;
692  c->rv40_weight_pixels_tab[0][1] = rv40_weight_func_rnd_8;
693  c->rv40_weight_pixels_tab[1][0] = rv40_weight_func_nornd_16;
694  c->rv40_weight_pixels_tab[1][1] = rv40_weight_func_nornd_8;
695 
696  c->rv40_weak_loop_filter[0] = rv40_h_weak_loop_filter;
697  c->rv40_weak_loop_filter[1] = rv40_v_weak_loop_filter;
698  c->rv40_strong_loop_filter[0] = rv40_h_strong_loop_filter;
699  c->rv40_strong_loop_filter[1] = rv40_v_strong_loop_filter;
700  c->rv40_loop_filter_strength[0] = rv40_h_loop_filter_strength;
701  c->rv40_loop_filter_strength[1] = rv40_v_loop_filter_strength;
702 
703  if (ARCH_AARCH64)
704  ff_rv40dsp_init_aarch64(c);
705  if (ARCH_ARM)
706  ff_rv40dsp_init_arm(c);
707  if (ARCH_X86)
708  ff_rv40dsp_init_x86(c);
709 }
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