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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 "avcodec.h"
28 #include "h264qpel.h"
29 #include "rv34dsp.h"
30 #include "libavutil/avassert.h"
31 #include "libavutil/common.h"
32 
33 #define RV40_LOWPASS(OPNAME, OP) \
34 static av_unused void OPNAME ## rv40_qpel8_h_lowpass(uint8_t *dst, uint8_t *src, int dstStride, int srcStride,\
35  const int h, const int C1, const int C2, const int SHIFT){\
36  uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;\
37  int i;\
38  for(i = 0; i < h; i++)\
39  {\
40  OP(dst[0], (src[-2] + src[ 3] - 5*(src[-1]+src[2]) + src[0]*C1 + src[1]*C2 + (1<<(SHIFT-1))) >> SHIFT);\
41  OP(dst[1], (src[-1] + src[ 4] - 5*(src[ 0]+src[3]) + src[1]*C1 + src[2]*C2 + (1<<(SHIFT-1))) >> SHIFT);\
42  OP(dst[2], (src[ 0] + src[ 5] - 5*(src[ 1]+src[4]) + src[2]*C1 + src[3]*C2 + (1<<(SHIFT-1))) >> SHIFT);\
43  OP(dst[3], (src[ 1] + src[ 6] - 5*(src[ 2]+src[5]) + src[3]*C1 + src[4]*C2 + (1<<(SHIFT-1))) >> SHIFT);\
44  OP(dst[4], (src[ 2] + src[ 7] - 5*(src[ 3]+src[6]) + src[4]*C1 + src[5]*C2 + (1<<(SHIFT-1))) >> SHIFT);\
45  OP(dst[5], (src[ 3] + src[ 8] - 5*(src[ 4]+src[7]) + src[5]*C1 + src[6]*C2 + (1<<(SHIFT-1))) >> SHIFT);\
46  OP(dst[6], (src[ 4] + src[ 9] - 5*(src[ 5]+src[8]) + src[6]*C1 + src[7]*C2 + (1<<(SHIFT-1))) >> SHIFT);\
47  OP(dst[7], (src[ 5] + src[10] - 5*(src[ 6]+src[9]) + src[7]*C1 + src[8]*C2 + (1<<(SHIFT-1))) >> SHIFT);\
48  dst += dstStride;\
49  src += srcStride;\
50  }\
51 }\
52 \
53 static void OPNAME ## rv40_qpel8_v_lowpass(uint8_t *dst, uint8_t *src, int dstStride, int srcStride,\
54  const int w, const int C1, const int C2, const int SHIFT){\
55  uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;\
56  int i;\
57  for(i = 0; i < w; i++)\
58  {\
59  const int srcB = src[-2*srcStride];\
60  const int srcA = src[-1*srcStride];\
61  const int src0 = src[0 *srcStride];\
62  const int src1 = src[1 *srcStride];\
63  const int src2 = src[2 *srcStride];\
64  const int src3 = src[3 *srcStride];\
65  const int src4 = src[4 *srcStride];\
66  const int src5 = src[5 *srcStride];\
67  const int src6 = src[6 *srcStride];\
68  const int src7 = src[7 *srcStride];\
69  const int src8 = src[8 *srcStride];\
70  const int src9 = src[9 *srcStride];\
71  const int src10 = src[10*srcStride];\
72  OP(dst[0*dstStride], (srcB + src3 - 5*(srcA+src2) + src0*C1 + src1*C2 + (1<<(SHIFT-1))) >> SHIFT);\
73  OP(dst[1*dstStride], (srcA + src4 - 5*(src0+src3) + src1*C1 + src2*C2 + (1<<(SHIFT-1))) >> SHIFT);\
74  OP(dst[2*dstStride], (src0 + src5 - 5*(src1+src4) + src2*C1 + src3*C2 + (1<<(SHIFT-1))) >> SHIFT);\
75  OP(dst[3*dstStride], (src1 + src6 - 5*(src2+src5) + src3*C1 + src4*C2 + (1<<(SHIFT-1))) >> SHIFT);\
76  OP(dst[4*dstStride], (src2 + src7 - 5*(src3+src6) + src4*C1 + src5*C2 + (1<<(SHIFT-1))) >> SHIFT);\
77  OP(dst[5*dstStride], (src3 + src8 - 5*(src4+src7) + src5*C1 + src6*C2 + (1<<(SHIFT-1))) >> SHIFT);\
78  OP(dst[6*dstStride], (src4 + src9 - 5*(src5+src8) + src6*C1 + src7*C2 + (1<<(SHIFT-1))) >> SHIFT);\
79  OP(dst[7*dstStride], (src5 + src10 - 5*(src6+src9) + src7*C1 + src8*C2 + (1<<(SHIFT-1))) >> SHIFT);\
80  dst++;\
81  src++;\
82  }\
83 }\
84 \
85 static void OPNAME ## rv40_qpel16_v_lowpass(uint8_t *dst, uint8_t *src, int dstStride, int srcStride,\
86  const int w, const int C1, const int C2, const int SHIFT){\
87  OPNAME ## rv40_qpel8_v_lowpass(dst , src , dstStride, srcStride, 8, C1, C2, SHIFT);\
88  OPNAME ## rv40_qpel8_v_lowpass(dst+8, src+8, dstStride, srcStride, 8, C1, C2, SHIFT);\
89  src += 8*srcStride;\
90  dst += 8*dstStride;\
91  OPNAME ## rv40_qpel8_v_lowpass(dst , src , dstStride, srcStride, w-8, C1, C2, SHIFT);\
92  OPNAME ## rv40_qpel8_v_lowpass(dst+8, src+8, dstStride, srcStride, w-8, C1, C2, SHIFT);\
93 }\
94 \
95 static void OPNAME ## rv40_qpel16_h_lowpass(uint8_t *dst, uint8_t *src, int dstStride, int srcStride,\
96  const int h, const int C1, const int C2, const int SHIFT){\
97  OPNAME ## rv40_qpel8_h_lowpass(dst , src , dstStride, srcStride, 8, C1, C2, SHIFT);\
98  OPNAME ## rv40_qpel8_h_lowpass(dst+8, src+8, dstStride, srcStride, 8, C1, C2, SHIFT);\
99  src += 8*srcStride;\
100  dst += 8*dstStride;\
101  OPNAME ## rv40_qpel8_h_lowpass(dst , src , dstStride, srcStride, h-8, C1, C2, SHIFT);\
102  OPNAME ## rv40_qpel8_h_lowpass(dst+8, src+8, dstStride, srcStride, h-8, C1, C2, SHIFT);\
103 }\
104 \
105 
106 #define RV40_MC(OPNAME, SIZE) \
107 static void OPNAME ## rv40_qpel ## SIZE ## _mc10_c(uint8_t *dst, uint8_t *src, int stride){\
108  OPNAME ## rv40_qpel ## SIZE ## _h_lowpass(dst, src, stride, stride, SIZE, 52, 20, 6);\
109 }\
110 \
111 static void OPNAME ## rv40_qpel ## SIZE ## _mc30_c(uint8_t *dst, uint8_t *src, int stride){\
112  OPNAME ## rv40_qpel ## SIZE ## _h_lowpass(dst, src, stride, stride, SIZE, 20, 52, 6);\
113 }\
114 \
115 static void OPNAME ## rv40_qpel ## SIZE ## _mc01_c(uint8_t *dst, uint8_t *src, int stride){\
116  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, src, stride, stride, SIZE, 52, 20, 6);\
117 }\
118 \
119 static void OPNAME ## rv40_qpel ## SIZE ## _mc11_c(uint8_t *dst, uint8_t *src, int stride){\
120  uint8_t full[SIZE*(SIZE+5)];\
121  uint8_t * const full_mid = full + SIZE*2;\
122  put_rv40_qpel ## SIZE ## _h_lowpass(full, src - 2*stride, SIZE, stride, SIZE+5, 52, 20, 6);\
123  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, full_mid, stride, SIZE, SIZE, 52, 20, 6);\
124 }\
125 \
126 static void OPNAME ## rv40_qpel ## SIZE ## _mc21_c(uint8_t *dst, uint8_t *src, int stride){\
127  uint8_t full[SIZE*(SIZE+5)];\
128  uint8_t * const full_mid = full + SIZE*2;\
129  put_rv40_qpel ## SIZE ## _h_lowpass(full, src - 2*stride, SIZE, stride, SIZE+5, 20, 20, 5);\
130  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, full_mid, stride, SIZE, SIZE, 52, 20, 6);\
131 }\
132 \
133 static void OPNAME ## rv40_qpel ## SIZE ## _mc31_c(uint8_t *dst, uint8_t *src, int stride){\
134  uint8_t full[SIZE*(SIZE+5)];\
135  uint8_t * const full_mid = full + SIZE*2;\
136  put_rv40_qpel ## SIZE ## _h_lowpass(full, src - 2*stride, SIZE, stride, SIZE+5, 20, 52, 6);\
137  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, full_mid, stride, SIZE, SIZE, 52, 20, 6);\
138 }\
139 \
140 static void OPNAME ## rv40_qpel ## SIZE ## _mc12_c(uint8_t *dst, uint8_t *src, int stride){\
141  uint8_t full[SIZE*(SIZE+5)];\
142  uint8_t * const full_mid = full + SIZE*2;\
143  put_rv40_qpel ## SIZE ## _h_lowpass(full, src - 2*stride, SIZE, stride, SIZE+5, 52, 20, 6);\
144  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, full_mid, stride, SIZE, SIZE, 20, 20, 5);\
145 }\
146 \
147 static void OPNAME ## rv40_qpel ## SIZE ## _mc22_c(uint8_t *dst, uint8_t *src, int stride){\
148  uint8_t full[SIZE*(SIZE+5)];\
149  uint8_t * const full_mid = full + SIZE*2;\
150  put_rv40_qpel ## SIZE ## _h_lowpass(full, src - 2*stride, SIZE, stride, SIZE+5, 20, 20, 5);\
151  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, full_mid, stride, SIZE, SIZE, 20, 20, 5);\
152 }\
153 \
154 static void OPNAME ## rv40_qpel ## SIZE ## _mc32_c(uint8_t *dst, uint8_t *src, int stride){\
155  uint8_t full[SIZE*(SIZE+5)];\
156  uint8_t * const full_mid = full + SIZE*2;\
157  put_rv40_qpel ## SIZE ## _h_lowpass(full, src - 2*stride, SIZE, stride, SIZE+5, 20, 52, 6);\
158  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, full_mid, stride, SIZE, SIZE, 20, 20, 5);\
159 }\
160 \
161 static void OPNAME ## rv40_qpel ## SIZE ## _mc03_c(uint8_t *dst, uint8_t *src, int stride){\
162  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, src, stride, stride, SIZE, 20, 52, 6);\
163 }\
164 \
165 static void OPNAME ## rv40_qpel ## SIZE ## _mc13_c(uint8_t *dst, uint8_t *src, int stride){\
166  uint8_t full[SIZE*(SIZE+5)];\
167  uint8_t * const full_mid = full + SIZE*2;\
168  put_rv40_qpel ## SIZE ## _h_lowpass(full, src - 2*stride, SIZE, stride, SIZE+5, 52, 20, 6);\
169  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, full_mid, stride, SIZE, SIZE, 20, 52, 6);\
170 }\
171 \
172 static void OPNAME ## rv40_qpel ## SIZE ## _mc23_c(uint8_t *dst, uint8_t *src, int stride){\
173  uint8_t full[SIZE*(SIZE+5)];\
174  uint8_t * const full_mid = full + SIZE*2;\
175  put_rv40_qpel ## SIZE ## _h_lowpass(full, src - 2*stride, SIZE, stride, SIZE+5, 20, 20, 5);\
176  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, full_mid, stride, SIZE, SIZE, 20, 52, 6);\
177 }\
178 \
179 
180 #define op_avg(a, b) a = (((a)+cm[b]+1)>>1)
181 #define op_put(a, b) a = cm[b]
182 
183 RV40_LOWPASS(put_ , op_put)
184 RV40_LOWPASS(avg_ , op_avg)
185 
186 #undef op_avg
187 #undef op_put
188 
189 RV40_MC(put_, 8)
190 RV40_MC(put_, 16)
191 RV40_MC(avg_, 8)
192 RV40_MC(avg_, 16)
193 
194 static const int rv40_bias[4][4] = {
195  { 0, 16, 32, 16 },
196  { 32, 28, 32, 28 },
197  { 0, 32, 16, 32 },
198  { 32, 28, 32, 28 }
199 };
200 
201 #define RV40_CHROMA_MC(OPNAME, OP)\
202 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){\
203  const int A = (8-x) * (8-y);\
204  const int B = ( x) * (8-y);\
205  const int C = (8-x) * ( y);\
206  const int D = ( x) * ( y);\
207  int i;\
208  int bias = rv40_bias[y>>1][x>>1];\
209  \
210  av_assert2(x<8 && y<8 && x>=0 && y>=0);\
211 \
212  if(D){\
213  for(i = 0; i < h; i++){\
214  OP(dst[0], (A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1] + bias));\
215  OP(dst[1], (A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2] + bias));\
216  OP(dst[2], (A*src[2] + B*src[3] + C*src[stride+2] + D*src[stride+3] + bias));\
217  OP(dst[3], (A*src[3] + B*src[4] + C*src[stride+3] + D*src[stride+4] + bias));\
218  dst += stride;\
219  src += stride;\
220  }\
221  }else{\
222  const int E = B + C;\
223  const int step = C ? stride : 1;\
224  for(i = 0; i < h; i++){\
225  OP(dst[0], (A*src[0] + E*src[step+0] + bias));\
226  OP(dst[1], (A*src[1] + E*src[step+1] + bias));\
227  OP(dst[2], (A*src[2] + E*src[step+2] + bias));\
228  OP(dst[3], (A*src[3] + E*src[step+3] + bias));\
229  dst += stride;\
230  src += stride;\
231  }\
232  }\
233 }\
234 \
235 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){\
236  const int A = (8-x) * (8-y);\
237  const int B = ( x) * (8-y);\
238  const int C = (8-x) * ( y);\
239  const int D = ( x) * ( y);\
240  int i;\
241  int bias = rv40_bias[y>>1][x>>1];\
242  \
243  av_assert2(x<8 && y<8 && x>=0 && y>=0);\
244 \
245  if(D){\
246  for(i = 0; i < h; i++){\
247  OP(dst[0], (A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1] + bias));\
248  OP(dst[1], (A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2] + bias));\
249  OP(dst[2], (A*src[2] + B*src[3] + C*src[stride+2] + D*src[stride+3] + bias));\
250  OP(dst[3], (A*src[3] + B*src[4] + C*src[stride+3] + D*src[stride+4] + bias));\
251  OP(dst[4], (A*src[4] + B*src[5] + C*src[stride+4] + D*src[stride+5] + bias));\
252  OP(dst[5], (A*src[5] + B*src[6] + C*src[stride+5] + D*src[stride+6] + bias));\
253  OP(dst[6], (A*src[6] + B*src[7] + C*src[stride+6] + D*src[stride+7] + bias));\
254  OP(dst[7], (A*src[7] + B*src[8] + C*src[stride+7] + D*src[stride+8] + bias));\
255  dst += stride;\
256  src += stride;\
257  }\
258  }else{\
259  const int E = B + C;\
260  const int step = C ? stride : 1;\
261  for(i = 0; i < h; i++){\
262  OP(dst[0], (A*src[0] + E*src[step+0] + bias));\
263  OP(dst[1], (A*src[1] + E*src[step+1] + bias));\
264  OP(dst[2], (A*src[2] + E*src[step+2] + bias));\
265  OP(dst[3], (A*src[3] + E*src[step+3] + bias));\
266  OP(dst[4], (A*src[4] + E*src[step+4] + bias));\
267  OP(dst[5], (A*src[5] + E*src[step+5] + bias));\
268  OP(dst[6], (A*src[6] + E*src[step+6] + bias));\
269  OP(dst[7], (A*src[7] + E*src[step+7] + bias));\
270  dst += stride;\
271  src += stride;\
272  }\
273  }\
274 }
275 
276 #define op_avg(a, b) a = (((a)+((b)>>6)+1)>>1)
277 #define op_put(a, b) a = ((b)>>6)
278 
279 RV40_CHROMA_MC(put_, op_put)
280 RV40_CHROMA_MC(avg_, op_avg)
281 
282 #define RV40_WEIGHT_FUNC(size) \
283 static void rv40_weight_func_rnd_ ## size (uint8_t *dst, uint8_t *src1, uint8_t *src2, int w1, int w2, ptrdiff_t stride)\
284 {\
285  int i, j;\
286 \
287  for (j = 0; j < size; j++) {\
288  for (i = 0; i < size; i++)\
289  dst[i] = (((w2 * src1[i]) >> 9) + ((w1 * src2[i]) >> 9) + 0x10) >> 5;\
290  src1 += stride;\
291  src2 += stride;\
292  dst += stride;\
293  }\
294 }\
295 static void rv40_weight_func_nornd_ ## size (uint8_t *dst, uint8_t *src1, uint8_t *src2, int w1, int w2, ptrdiff_t stride)\
296 {\
297  int i, j;\
298 \
299  for (j = 0; j < size; j++) {\
300  for (i = 0; i < size; i++)\
301  dst[i] = (w2 * src1[i] + w1 * src2[i] + 0x10) >> 5;\
302  src1 += stride;\
303  src2 += stride;\
304  dst += stride;\
305  }\
306 }
307 
308 RV40_WEIGHT_FUNC(16)
309 RV40_WEIGHT_FUNC(8)
310 
311 /**
312  * dither values for deblocking filter - left/top values
313  */
314 static const uint8_t rv40_dither_l[16] = {
315  0x40, 0x50, 0x20, 0x60, 0x30, 0x50, 0x40, 0x30,
316  0x50, 0x40, 0x50, 0x30, 0x60, 0x20, 0x50, 0x40
317 };
318 
319 /**
320  * dither values for deblocking filter - right/bottom values
321  */
322 static const uint8_t rv40_dither_r[16] = {
323  0x40, 0x30, 0x60, 0x20, 0x50, 0x30, 0x30, 0x40,
324  0x40, 0x40, 0x50, 0x30, 0x20, 0x60, 0x30, 0x40
325 };
326 
327 #define CLIP_SYMM(a, b) av_clip(a, -(b), b)
328 /**
329  * weaker deblocking very similar to the one described in 4.4.2 of JVT-A003r1
330  */
331 static av_always_inline void rv40_weak_loop_filter(uint8_t *src,
332  const int step,
333  const ptrdiff_t stride,
334  const int filter_p1,
335  const int filter_q1,
336  const int alpha,
337  const int beta,
338  const int lim_p0q0,
339  const int lim_q1,
340  const int lim_p1)
341 {
342  uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
343  int i, t, u, diff;
344 
345  for (i = 0; i < 4; i++, src += stride) {
346  int diff_p1p0 = src[-2*step] - src[-1*step];
347  int diff_q1q0 = src[ 1*step] - src[ 0*step];
348  int diff_p1p2 = src[-2*step] - src[-3*step];
349  int diff_q1q2 = src[ 1*step] - src[ 2*step];
350 
351  t = src[0*step] - src[-1*step];
352  if (!t)
353  continue;
354 
355  u = (alpha * FFABS(t)) >> 7;
356  if (u > 3 - (filter_p1 && filter_q1))
357  continue;
358 
359  t <<= 2;
360  if (filter_p1 && filter_q1)
361  t += src[-2*step] - src[1*step];
362 
363  diff = CLIP_SYMM((t + 4) >> 3, lim_p0q0);
364  src[-1*step] = cm[src[-1*step] + diff];
365  src[ 0*step] = cm[src[ 0*step] - diff];
366 
367  if (filter_p1 && FFABS(diff_p1p2) <= beta) {
368  t = (diff_p1p0 + diff_p1p2 - diff) >> 1;
369  src[-2*step] = cm[src[-2*step] - CLIP_SYMM(t, lim_p1)];
370  }
371 
372  if (filter_q1 && FFABS(diff_q1q2) <= beta) {
373  t = (diff_q1q0 + diff_q1q2 + diff) >> 1;
374  src[ 1*step] = cm[src[ 1*step] - CLIP_SYMM(t, lim_q1)];
375  }
376  }
377 }
378 
379 static void rv40_h_weak_loop_filter(uint8_t *src, const ptrdiff_t stride,
380  const int filter_p1, const int filter_q1,
381  const int alpha, const int beta,
382  const int lim_p0q0, const int lim_q1,
383  const int lim_p1)
384 {
385  rv40_weak_loop_filter(src, stride, 1, filter_p1, filter_q1,
386  alpha, beta, lim_p0q0, lim_q1, lim_p1);
387 }
388 
389 static void rv40_v_weak_loop_filter(uint8_t *src, const ptrdiff_t stride,
390  const int filter_p1, const int filter_q1,
391  const int alpha, const int beta,
392  const int lim_p0q0, const int lim_q1,
393  const int lim_p1)
394 {
395  rv40_weak_loop_filter(src, 1, stride, filter_p1, filter_q1,
396  alpha, beta, lim_p0q0, lim_q1, lim_p1);
397 }
398 
399 static av_always_inline void rv40_strong_loop_filter(uint8_t *src,
400  const int step,
401  const ptrdiff_t stride,
402  const int alpha,
403  const int lims,
404  const int dmode,
405  const int chroma)
406 {
407  int i;
408 
409  for(i = 0; i < 4; i++, src += stride){
410  int sflag, p0, q0, p1, q1;
411  int t = src[0*step] - src[-1*step];
412 
413  if (!t)
414  continue;
415 
416  sflag = (alpha * FFABS(t)) >> 7;
417  if (sflag > 1)
418  continue;
419 
420  p0 = (25*src[-3*step] + 26*src[-2*step] + 26*src[-1*step] +
421  26*src[ 0*step] + 25*src[ 1*step] +
422  rv40_dither_l[dmode + i]) >> 7;
423 
424  q0 = (25*src[-2*step] + 26*src[-1*step] + 26*src[ 0*step] +
425  26*src[ 1*step] + 25*src[ 2*step] +
426  rv40_dither_r[dmode + i]) >> 7;
427 
428  if (sflag) {
429  p0 = av_clip(p0, src[-1*step] - lims, src[-1*step] + lims);
430  q0 = av_clip(q0, src[ 0*step] - lims, src[ 0*step] + lims);
431  }
432 
433  p1 = (25*src[-4*step] + 26*src[-3*step] + 26*src[-2*step] + 26*p0 +
434  25*src[ 0*step] + rv40_dither_l[dmode + i]) >> 7;
435  q1 = (25*src[-1*step] + 26*q0 + 26*src[ 1*step] + 26*src[ 2*step] +
436  25*src[ 3*step] + rv40_dither_r[dmode + i]) >> 7;
437 
438  if (sflag) {
439  p1 = av_clip(p1, src[-2*step] - lims, src[-2*step] + lims);
440  q1 = av_clip(q1, src[ 1*step] - lims, src[ 1*step] + lims);
441  }
442 
443  src[-2*step] = p1;
444  src[-1*step] = p0;
445  src[ 0*step] = q0;
446  src[ 1*step] = q1;
447 
448  if(!chroma){
449  src[-3*step] = (25*src[-1*step] + 26*src[-2*step] +
450  51*src[-3*step] + 26*src[-4*step] + 64) >> 7;
451  src[ 2*step] = (25*src[ 0*step] + 26*src[ 1*step] +
452  51*src[ 2*step] + 26*src[ 3*step] + 64) >> 7;
453  }
454  }
455 }
456 
457 static void rv40_h_strong_loop_filter(uint8_t *src, const ptrdiff_t stride,
458  const int alpha, const int lims,
459  const int dmode, const int chroma)
460 {
461  rv40_strong_loop_filter(src, stride, 1, alpha, lims, dmode, chroma);
462 }
463 
464 static void rv40_v_strong_loop_filter(uint8_t *src, const ptrdiff_t stride,
465  const int alpha, const int lims,
466  const int dmode, const int chroma)
467 {
468  rv40_strong_loop_filter(src, 1, stride, alpha, lims, dmode, chroma);
469 }
470 
471 static av_always_inline int rv40_loop_filter_strength(uint8_t *src,
472  int step, ptrdiff_t stride,
473  int beta, int beta2,
474  int edge,
475  int *p1, int *q1)
476 {
477  int sum_p1p0 = 0, sum_q1q0 = 0, sum_p1p2 = 0, sum_q1q2 = 0;
478  int strong0 = 0, strong1 = 0;
479  uint8_t *ptr;
480  int i;
481 
482  for (i = 0, ptr = src; i < 4; i++, ptr += stride) {
483  sum_p1p0 += ptr[-2*step] - ptr[-1*step];
484  sum_q1q0 += ptr[ 1*step] - ptr[ 0*step];
485  }
486 
487  *p1 = FFABS(sum_p1p0) < (beta << 2);
488  *q1 = FFABS(sum_q1q0) < (beta << 2);
489 
490  if(!*p1 && !*q1)
491  return 0;
492 
493  if (!edge)
494  return 0;
495 
496  for (i = 0, ptr = src; i < 4; i++, ptr += stride) {
497  sum_p1p2 += ptr[-2*step] - ptr[-3*step];
498  sum_q1q2 += ptr[ 1*step] - ptr[ 2*step];
499  }
500 
501  strong0 = *p1 && (FFABS(sum_p1p2) < beta2);
502  strong1 = *q1 && (FFABS(sum_q1q2) < beta2);
503 
504  return strong0 && strong1;
505 }
506 
507 static int rv40_h_loop_filter_strength(uint8_t *src, ptrdiff_t stride,
508  int beta, int beta2, int edge,
509  int *p1, int *q1)
510 {
511  return rv40_loop_filter_strength(src, stride, 1, beta, beta2, edge, p1, q1);
512 }
513 
514 static int rv40_v_loop_filter_strength(uint8_t *src, ptrdiff_t stride,
515  int beta, int beta2, int edge,
516  int *p1, int *q1)
517 {
518  return rv40_loop_filter_strength(src, 1, stride, beta, beta2, edge, p1, q1);
519 }
520 
521 av_cold void ff_rv40dsp_init(RV34DSPContext *c)
522 {
523  H264QpelContext qpel;
524 
525  ff_rv34dsp_init(c);
526  ff_h264qpel_init(&qpel, 8);
527 
528  c->put_pixels_tab[0][ 0] = qpel.put_h264_qpel_pixels_tab[0][0];
529  c->put_pixels_tab[0][ 1] = put_rv40_qpel16_mc10_c;
530  c->put_pixels_tab[0][ 2] = qpel.put_h264_qpel_pixels_tab[0][2];
531  c->put_pixels_tab[0][ 3] = put_rv40_qpel16_mc30_c;
532  c->put_pixels_tab[0][ 4] = put_rv40_qpel16_mc01_c;
533  c->put_pixels_tab[0][ 5] = put_rv40_qpel16_mc11_c;
534  c->put_pixels_tab[0][ 6] = put_rv40_qpel16_mc21_c;
535  c->put_pixels_tab[0][ 7] = put_rv40_qpel16_mc31_c;
536  c->put_pixels_tab[0][ 8] = qpel.put_h264_qpel_pixels_tab[0][8];
537  c->put_pixels_tab[0][ 9] = put_rv40_qpel16_mc12_c;
538  c->put_pixels_tab[0][10] = put_rv40_qpel16_mc22_c;
539  c->put_pixels_tab[0][11] = put_rv40_qpel16_mc32_c;
540  c->put_pixels_tab[0][12] = put_rv40_qpel16_mc03_c;
541  c->put_pixels_tab[0][13] = put_rv40_qpel16_mc13_c;
542  c->put_pixels_tab[0][14] = put_rv40_qpel16_mc23_c;
543  c->put_pixels_tab[0][15] = ff_put_rv40_qpel16_mc33_c;
544  c->avg_pixels_tab[0][ 0] = qpel.avg_h264_qpel_pixels_tab[0][0];
545  c->avg_pixels_tab[0][ 1] = avg_rv40_qpel16_mc10_c;
546  c->avg_pixels_tab[0][ 2] = qpel.avg_h264_qpel_pixels_tab[0][2];
547  c->avg_pixels_tab[0][ 3] = avg_rv40_qpel16_mc30_c;
548  c->avg_pixels_tab[0][ 4] = avg_rv40_qpel16_mc01_c;
549  c->avg_pixels_tab[0][ 5] = avg_rv40_qpel16_mc11_c;
550  c->avg_pixels_tab[0][ 6] = avg_rv40_qpel16_mc21_c;
551  c->avg_pixels_tab[0][ 7] = avg_rv40_qpel16_mc31_c;
552  c->avg_pixels_tab[0][ 8] = qpel.avg_h264_qpel_pixels_tab[0][8];
553  c->avg_pixels_tab[0][ 9] = avg_rv40_qpel16_mc12_c;
554  c->avg_pixels_tab[0][10] = avg_rv40_qpel16_mc22_c;
555  c->avg_pixels_tab[0][11] = avg_rv40_qpel16_mc32_c;
556  c->avg_pixels_tab[0][12] = avg_rv40_qpel16_mc03_c;
557  c->avg_pixels_tab[0][13] = avg_rv40_qpel16_mc13_c;
558  c->avg_pixels_tab[0][14] = avg_rv40_qpel16_mc23_c;
559  c->avg_pixels_tab[0][15] = ff_avg_rv40_qpel16_mc33_c;
560  c->put_pixels_tab[1][ 0] = qpel.put_h264_qpel_pixels_tab[1][0];
561  c->put_pixels_tab[1][ 1] = put_rv40_qpel8_mc10_c;
562  c->put_pixels_tab[1][ 2] = qpel.put_h264_qpel_pixels_tab[1][2];
563  c->put_pixels_tab[1][ 3] = put_rv40_qpel8_mc30_c;
564  c->put_pixels_tab[1][ 4] = put_rv40_qpel8_mc01_c;
565  c->put_pixels_tab[1][ 5] = put_rv40_qpel8_mc11_c;
566  c->put_pixels_tab[1][ 6] = put_rv40_qpel8_mc21_c;
567  c->put_pixels_tab[1][ 7] = put_rv40_qpel8_mc31_c;
568  c->put_pixels_tab[1][ 8] = qpel.put_h264_qpel_pixels_tab[1][8];
569  c->put_pixels_tab[1][ 9] = put_rv40_qpel8_mc12_c;
570  c->put_pixels_tab[1][10] = put_rv40_qpel8_mc22_c;
571  c->put_pixels_tab[1][11] = put_rv40_qpel8_mc32_c;
572  c->put_pixels_tab[1][12] = put_rv40_qpel8_mc03_c;
573  c->put_pixels_tab[1][13] = put_rv40_qpel8_mc13_c;
574  c->put_pixels_tab[1][14] = put_rv40_qpel8_mc23_c;
575  c->put_pixels_tab[1][15] = ff_put_rv40_qpel8_mc33_c;
576  c->avg_pixels_tab[1][ 0] = qpel.avg_h264_qpel_pixels_tab[1][0];
577  c->avg_pixels_tab[1][ 1] = avg_rv40_qpel8_mc10_c;
578  c->avg_pixels_tab[1][ 2] = qpel.avg_h264_qpel_pixels_tab[1][2];
579  c->avg_pixels_tab[1][ 3] = avg_rv40_qpel8_mc30_c;
580  c->avg_pixels_tab[1][ 4] = avg_rv40_qpel8_mc01_c;
581  c->avg_pixels_tab[1][ 5] = avg_rv40_qpel8_mc11_c;
582  c->avg_pixels_tab[1][ 6] = avg_rv40_qpel8_mc21_c;
583  c->avg_pixels_tab[1][ 7] = avg_rv40_qpel8_mc31_c;
584  c->avg_pixels_tab[1][ 8] = qpel.avg_h264_qpel_pixels_tab[1][8];
585  c->avg_pixels_tab[1][ 9] = avg_rv40_qpel8_mc12_c;
586  c->avg_pixels_tab[1][10] = avg_rv40_qpel8_mc22_c;
587  c->avg_pixels_tab[1][11] = avg_rv40_qpel8_mc32_c;
588  c->avg_pixels_tab[1][12] = avg_rv40_qpel8_mc03_c;
589  c->avg_pixels_tab[1][13] = avg_rv40_qpel8_mc13_c;
590  c->avg_pixels_tab[1][14] = avg_rv40_qpel8_mc23_c;
591  c->avg_pixels_tab[1][15] = ff_avg_rv40_qpel8_mc33_c;
592 
593  c->put_chroma_pixels_tab[0] = put_rv40_chroma_mc8_c;
594  c->put_chroma_pixels_tab[1] = put_rv40_chroma_mc4_c;
595  c->avg_chroma_pixels_tab[0] = avg_rv40_chroma_mc8_c;
596  c->avg_chroma_pixels_tab[1] = avg_rv40_chroma_mc4_c;
597 
598  c->rv40_weight_pixels_tab[0][0] = rv40_weight_func_rnd_16;
599  c->rv40_weight_pixels_tab[0][1] = rv40_weight_func_rnd_8;
600  c->rv40_weight_pixels_tab[1][0] = rv40_weight_func_nornd_16;
601  c->rv40_weight_pixels_tab[1][1] = rv40_weight_func_nornd_8;
602 
603  c->rv40_weak_loop_filter[0] = rv40_h_weak_loop_filter;
604  c->rv40_weak_loop_filter[1] = rv40_v_weak_loop_filter;
605  c->rv40_strong_loop_filter[0] = rv40_h_strong_loop_filter;
606  c->rv40_strong_loop_filter[1] = rv40_v_strong_loop_filter;
607  c->rv40_loop_filter_strength[0] = rv40_h_loop_filter_strength;
608  c->rv40_loop_filter_strength[1] = rv40_v_loop_filter_strength;
609 
610  if (ARCH_X86)
611  ff_rv40dsp_init_x86(c);
612  if (ARCH_ARM)
613  ff_rv40dsp_init_arm(c);
614 }
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