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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  const 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  const 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, ptrdiff_t stride)\
108 {\
109  OPNAME ## rv40_qpel ## SIZE ## _h_lowpass(dst, src, stride, stride, SIZE, 52, 20, 6);\
110 }\
111 \
112 static void OPNAME ## rv40_qpel ## SIZE ## _mc30_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride)\
113 {\
114  OPNAME ## rv40_qpel ## SIZE ## _h_lowpass(dst, src, stride, stride, SIZE, 20, 52, 6);\
115 }\
116 \
117 static void OPNAME ## rv40_qpel ## SIZE ## _mc01_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride)\
118 {\
119  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, src, stride, stride, SIZE, 52, 20, 6);\
120 }\
121 \
122 static void OPNAME ## rv40_qpel ## SIZE ## _mc11_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride)\
123 {\
124  uint8_t full[SIZE*(SIZE+5)];\
125  uint8_t * const full_mid = full + SIZE*2;\
126  put_rv40_qpel ## SIZE ## _h_lowpass(full, src - 2*stride, SIZE, stride, SIZE+5, 52, 20, 6);\
127  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, full_mid, stride, SIZE, SIZE, 52, 20, 6);\
128 }\
129 \
130 static void OPNAME ## rv40_qpel ## SIZE ## _mc21_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride)\
131 {\
132  uint8_t full[SIZE*(SIZE+5)];\
133  uint8_t * const full_mid = full + SIZE*2;\
134  put_rv40_qpel ## SIZE ## _h_lowpass(full, src - 2*stride, SIZE, stride, SIZE+5, 20, 20, 5);\
135  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, full_mid, stride, SIZE, SIZE, 52, 20, 6);\
136 }\
137 \
138 static void OPNAME ## rv40_qpel ## SIZE ## _mc31_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride)\
139 {\
140  uint8_t full[SIZE*(SIZE+5)];\
141  uint8_t * const full_mid = full + SIZE*2;\
142  put_rv40_qpel ## SIZE ## _h_lowpass(full, src - 2*stride, SIZE, stride, SIZE+5, 20, 52, 6);\
143  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, full_mid, stride, SIZE, SIZE, 52, 20, 6);\
144 }\
145 \
146 static void OPNAME ## rv40_qpel ## SIZE ## _mc12_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride)\
147 {\
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, 52, 20, 6);\
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 ## _mc22_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride)\
155 {\
156  uint8_t full[SIZE*(SIZE+5)];\
157  uint8_t * const full_mid = full + SIZE*2;\
158  put_rv40_qpel ## SIZE ## _h_lowpass(full, src - 2*stride, SIZE, stride, SIZE+5, 20, 20, 5);\
159  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, full_mid, stride, SIZE, SIZE, 20, 20, 5);\
160 }\
161 \
162 static void OPNAME ## rv40_qpel ## SIZE ## _mc32_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride)\
163 {\
164  uint8_t full[SIZE*(SIZE+5)];\
165  uint8_t * const full_mid = full + SIZE*2;\
166  put_rv40_qpel ## SIZE ## _h_lowpass(full, src - 2*stride, SIZE, stride, SIZE+5, 20, 52, 6);\
167  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, full_mid, stride, SIZE, SIZE, 20, 20, 5);\
168 }\
169 \
170 static void OPNAME ## rv40_qpel ## SIZE ## _mc03_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride)\
171 {\
172  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, src, stride, stride, SIZE, 20, 52, 6);\
173 }\
174 \
175 static void OPNAME ## rv40_qpel ## SIZE ## _mc13_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride)\
176 {\
177  uint8_t full[SIZE*(SIZE+5)];\
178  uint8_t * const full_mid = full + SIZE*2;\
179  put_rv40_qpel ## SIZE ## _h_lowpass(full, src - 2*stride, SIZE, stride, SIZE+5, 52, 20, 6);\
180  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, full_mid, stride, SIZE, SIZE, 20, 52, 6);\
181 }\
182 \
183 static void OPNAME ## rv40_qpel ## SIZE ## _mc23_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride)\
184 {\
185  uint8_t full[SIZE*(SIZE+5)];\
186  uint8_t * const full_mid = full + SIZE*2;\
187  put_rv40_qpel ## SIZE ## _h_lowpass(full, src - 2*stride, SIZE, stride, SIZE+5, 20, 20, 5);\
188  OPNAME ## rv40_qpel ## SIZE ## _v_lowpass(dst, full_mid, stride, SIZE, SIZE, 20, 52, 6);\
189 }\
190 \
191 
192 #define op_avg(a, b) a = (((a)+cm[b]+1)>>1)
193 #define op_put(a, b) a = cm[b]
194 
195 RV40_LOWPASS(put_ , op_put)
196 RV40_LOWPASS(avg_ , op_avg)
197 
198 #undef op_avg
199 #undef op_put
200 
201 RV40_MC(put_, 8)
202 RV40_MC(put_, 16)
203 RV40_MC(avg_, 8)
204 RV40_MC(avg_, 16)
205 
206 static const int rv40_bias[4][4] = {
207  { 0, 16, 32, 16 },
208  { 32, 28, 32, 28 },
209  { 0, 32, 16, 32 },
210  { 32, 28, 32, 28 }
211 };
212 
213 #define RV40_CHROMA_MC(OPNAME, OP)\
214 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){\
215  const int A = (8-x) * (8-y);\
216  const int B = ( x) * (8-y);\
217  const int C = (8-x) * ( y);\
218  const int D = ( x) * ( y);\
219  int i;\
220  int bias = rv40_bias[y>>1][x>>1];\
221  \
222  av_assert2(x<8 && y<8 && x>=0 && y>=0);\
223 \
224  if(D){\
225  for(i = 0; i < h; i++){\
226  OP(dst[0], (A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1] + bias));\
227  OP(dst[1], (A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2] + bias));\
228  OP(dst[2], (A*src[2] + B*src[3] + C*src[stride+2] + D*src[stride+3] + bias));\
229  OP(dst[3], (A*src[3] + B*src[4] + C*src[stride+3] + D*src[stride+4] + bias));\
230  dst += stride;\
231  src += stride;\
232  }\
233  }else{\
234  const int E = B + C;\
235  const int step = C ? stride : 1;\
236  for(i = 0; i < h; i++){\
237  OP(dst[0], (A*src[0] + E*src[step+0] + bias));\
238  OP(dst[1], (A*src[1] + E*src[step+1] + bias));\
239  OP(dst[2], (A*src[2] + E*src[step+2] + bias));\
240  OP(dst[3], (A*src[3] + E*src[step+3] + bias));\
241  dst += stride;\
242  src += stride;\
243  }\
244  }\
245 }\
246 \
247 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){\
248  const int A = (8-x) * (8-y);\
249  const int B = ( x) * (8-y);\
250  const int C = (8-x) * ( y);\
251  const int D = ( x) * ( y);\
252  int i;\
253  int bias = rv40_bias[y>>1][x>>1];\
254  \
255  av_assert2(x<8 && y<8 && x>=0 && y>=0);\
256 \
257  if(D){\
258  for(i = 0; i < h; i++){\
259  OP(dst[0], (A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1] + bias));\
260  OP(dst[1], (A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2] + bias));\
261  OP(dst[2], (A*src[2] + B*src[3] + C*src[stride+2] + D*src[stride+3] + bias));\
262  OP(dst[3], (A*src[3] + B*src[4] + C*src[stride+3] + D*src[stride+4] + bias));\
263  OP(dst[4], (A*src[4] + B*src[5] + C*src[stride+4] + D*src[stride+5] + bias));\
264  OP(dst[5], (A*src[5] + B*src[6] + C*src[stride+5] + D*src[stride+6] + bias));\
265  OP(dst[6], (A*src[6] + B*src[7] + C*src[stride+6] + D*src[stride+7] + bias));\
266  OP(dst[7], (A*src[7] + B*src[8] + C*src[stride+7] + D*src[stride+8] + bias));\
267  dst += stride;\
268  src += stride;\
269  }\
270  }else{\
271  const int E = B + C;\
272  const int step = C ? stride : 1;\
273  for(i = 0; i < h; i++){\
274  OP(dst[0], (A*src[0] + E*src[step+0] + bias));\
275  OP(dst[1], (A*src[1] + E*src[step+1] + bias));\
276  OP(dst[2], (A*src[2] + E*src[step+2] + bias));\
277  OP(dst[3], (A*src[3] + E*src[step+3] + bias));\
278  OP(dst[4], (A*src[4] + E*src[step+4] + bias));\
279  OP(dst[5], (A*src[5] + E*src[step+5] + bias));\
280  OP(dst[6], (A*src[6] + E*src[step+6] + bias));\
281  OP(dst[7], (A*src[7] + E*src[step+7] + bias));\
282  dst += stride;\
283  src += stride;\
284  }\
285  }\
286 }
287 
288 #define op_avg(a, b) a = (((a)+((b)>>6)+1)>>1)
289 #define op_put(a, b) a = ((b)>>6)
290 
291 RV40_CHROMA_MC(put_, op_put)
292 RV40_CHROMA_MC(avg_, op_avg)
293 
294 #define RV40_WEIGHT_FUNC(size) \
295 static void rv40_weight_func_rnd_ ## 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]) >> 9) + ((w1 * src2[i]) >> 9) + 0x10) >> 5;\
302  src1 += stride;\
303  src2 += stride;\
304  dst += stride;\
305  }\
306 }\
307 static void rv40_weight_func_nornd_ ## size (uint8_t *dst, uint8_t *src1, uint8_t *src2, int w1, int w2, ptrdiff_t stride)\
308 {\
309  int i, j;\
310 \
311  for (j = 0; j < size; j++) {\
312  for (i = 0; i < size; i++)\
313  dst[i] = (w2 * src1[i] + w1 * src2[i] + 0x10) >> 5;\
314  src1 += stride;\
315  src2 += stride;\
316  dst += stride;\
317  }\
318 }
319 
320 RV40_WEIGHT_FUNC(16)
321 RV40_WEIGHT_FUNC(8)
322 
323 /**
324  * dither values for deblocking filter - left/top values
325  */
326 static const uint8_t rv40_dither_l[16] = {
327  0x40, 0x50, 0x20, 0x60, 0x30, 0x50, 0x40, 0x30,
328  0x50, 0x40, 0x50, 0x30, 0x60, 0x20, 0x50, 0x40
329 };
330 
331 /**
332  * dither values for deblocking filter - right/bottom values
333  */
334 static const uint8_t rv40_dither_r[16] = {
335  0x40, 0x30, 0x60, 0x20, 0x50, 0x30, 0x30, 0x40,
336  0x40, 0x40, 0x50, 0x30, 0x20, 0x60, 0x30, 0x40
337 };
338 
339 #define CLIP_SYMM(a, b) av_clip(a, -(b), b)
340 /**
341  * weaker deblocking very similar to the one described in 4.4.2 of JVT-A003r1
342  */
343 static av_always_inline void rv40_weak_loop_filter(uint8_t *src,
344  const int step,
345  const ptrdiff_t stride,
346  const int filter_p1,
347  const int filter_q1,
348  const int alpha,
349  const int beta,
350  const int lim_p0q0,
351  const int lim_q1,
352  const int lim_p1)
353 {
354  const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
355  int i, t, u, diff;
356 
357  for (i = 0; i < 4; i++, src += stride) {
358  int diff_p1p0 = src[-2*step] - src[-1*step];
359  int diff_q1q0 = src[ 1*step] - src[ 0*step];
360  int diff_p1p2 = src[-2*step] - src[-3*step];
361  int diff_q1q2 = src[ 1*step] - src[ 2*step];
362 
363  t = src[0*step] - src[-1*step];
364  if (!t)
365  continue;
366 
367  u = (alpha * FFABS(t)) >> 7;
368  if (u > 3 - (filter_p1 && filter_q1))
369  continue;
370 
371  t <<= 2;
372  if (filter_p1 && filter_q1)
373  t += src[-2*step] - src[1*step];
374 
375  diff = CLIP_SYMM((t + 4) >> 3, lim_p0q0);
376  src[-1*step] = cm[src[-1*step] + diff];
377  src[ 0*step] = cm[src[ 0*step] - diff];
378 
379  if (filter_p1 && FFABS(diff_p1p2) <= beta) {
380  t = (diff_p1p0 + diff_p1p2 - diff) >> 1;
381  src[-2*step] = cm[src[-2*step] - CLIP_SYMM(t, lim_p1)];
382  }
383 
384  if (filter_q1 && FFABS(diff_q1q2) <= beta) {
385  t = (diff_q1q0 + diff_q1q2 + diff) >> 1;
386  src[ 1*step] = cm[src[ 1*step] - CLIP_SYMM(t, lim_q1)];
387  }
388  }
389 }
390 
391 static void rv40_h_weak_loop_filter(uint8_t *src, const ptrdiff_t stride,
392  const int filter_p1, const int filter_q1,
393  const int alpha, const int beta,
394  const int lim_p0q0, const int lim_q1,
395  const int lim_p1)
396 {
397  rv40_weak_loop_filter(src, stride, 1, filter_p1, filter_q1,
398  alpha, beta, lim_p0q0, lim_q1, lim_p1);
399 }
400 
401 static void rv40_v_weak_loop_filter(uint8_t *src, const ptrdiff_t stride,
402  const int filter_p1, const int filter_q1,
403  const int alpha, const int beta,
404  const int lim_p0q0, const int lim_q1,
405  const int lim_p1)
406 {
407  rv40_weak_loop_filter(src, 1, stride, filter_p1, filter_q1,
408  alpha, beta, lim_p0q0, lim_q1, lim_p1);
409 }
410 
411 static av_always_inline void rv40_strong_loop_filter(uint8_t *src,
412  const int step,
413  const ptrdiff_t stride,
414  const int alpha,
415  const int lims,
416  const int dmode,
417  const int chroma)
418 {
419  int i;
420 
421  for(i = 0; i < 4; i++, src += stride){
422  int sflag, p0, q0, p1, q1;
423  int t = src[0*step] - src[-1*step];
424 
425  if (!t)
426  continue;
427 
428  sflag = (alpha * FFABS(t)) >> 7;
429  if (sflag > 1)
430  continue;
431 
432  p0 = (25*src[-3*step] + 26*src[-2*step] + 26*src[-1*step] +
433  26*src[ 0*step] + 25*src[ 1*step] +
434  rv40_dither_l[dmode + i]) >> 7;
435 
436  q0 = (25*src[-2*step] + 26*src[-1*step] + 26*src[ 0*step] +
437  26*src[ 1*step] + 25*src[ 2*step] +
438  rv40_dither_r[dmode + i]) >> 7;
439 
440  if (sflag) {
441  p0 = av_clip(p0, src[-1*step] - lims, src[-1*step] + lims);
442  q0 = av_clip(q0, src[ 0*step] - lims, src[ 0*step] + lims);
443  }
444 
445  p1 = (25*src[-4*step] + 26*src[-3*step] + 26*src[-2*step] + 26*p0 +
446  25*src[ 0*step] + rv40_dither_l[dmode + i]) >> 7;
447  q1 = (25*src[-1*step] + 26*q0 + 26*src[ 1*step] + 26*src[ 2*step] +
448  25*src[ 3*step] + rv40_dither_r[dmode + i]) >> 7;
449 
450  if (sflag) {
451  p1 = av_clip(p1, src[-2*step] - lims, src[-2*step] + lims);
452  q1 = av_clip(q1, src[ 1*step] - lims, src[ 1*step] + lims);
453  }
454 
455  src[-2*step] = p1;
456  src[-1*step] = p0;
457  src[ 0*step] = q0;
458  src[ 1*step] = q1;
459 
460  if(!chroma){
461  src[-3*step] = (25*src[-1*step] + 26*src[-2*step] +
462  51*src[-3*step] + 26*src[-4*step] + 64) >> 7;
463  src[ 2*step] = (25*src[ 0*step] + 26*src[ 1*step] +
464  51*src[ 2*step] + 26*src[ 3*step] + 64) >> 7;
465  }
466  }
467 }
468 
469 static void rv40_h_strong_loop_filter(uint8_t *src, const ptrdiff_t stride,
470  const int alpha, const int lims,
471  const int dmode, const int chroma)
472 {
473  rv40_strong_loop_filter(src, stride, 1, alpha, lims, dmode, chroma);
474 }
475 
476 static void rv40_v_strong_loop_filter(uint8_t *src, const ptrdiff_t stride,
477  const int alpha, const int lims,
478  const int dmode, const int chroma)
479 {
480  rv40_strong_loop_filter(src, 1, stride, alpha, lims, dmode, chroma);
481 }
482 
483 static av_always_inline int rv40_loop_filter_strength(uint8_t *src,
484  int step, ptrdiff_t stride,
485  int beta, int beta2,
486  int edge,
487  int *p1, int *q1)
488 {
489  int sum_p1p0 = 0, sum_q1q0 = 0, sum_p1p2 = 0, sum_q1q2 = 0;
490  int strong0 = 0, strong1 = 0;
491  uint8_t *ptr;
492  int i;
493 
494  for (i = 0, ptr = src; i < 4; i++, ptr += stride) {
495  sum_p1p0 += ptr[-2*step] - ptr[-1*step];
496  sum_q1q0 += ptr[ 1*step] - ptr[ 0*step];
497  }
498 
499  *p1 = FFABS(sum_p1p0) < (beta << 2);
500  *q1 = FFABS(sum_q1q0) < (beta << 2);
501 
502  if(!*p1 && !*q1)
503  return 0;
504 
505  if (!edge)
506  return 0;
507 
508  for (i = 0, ptr = src; i < 4; i++, ptr += stride) {
509  sum_p1p2 += ptr[-2*step] - ptr[-3*step];
510  sum_q1q2 += ptr[ 1*step] - ptr[ 2*step];
511  }
512 
513  strong0 = *p1 && (FFABS(sum_p1p2) < beta2);
514  strong1 = *q1 && (FFABS(sum_q1q2) < beta2);
515 
516  return strong0 && strong1;
517 }
518 
519 static int rv40_h_loop_filter_strength(uint8_t *src, ptrdiff_t stride,
520  int beta, int beta2, int edge,
521  int *p1, int *q1)
522 {
523  return rv40_loop_filter_strength(src, stride, 1, beta, beta2, edge, p1, q1);
524 }
525 
526 static int rv40_v_loop_filter_strength(uint8_t *src, ptrdiff_t stride,
527  int beta, int beta2, int edge,
528  int *p1, int *q1)
529 {
530  return rv40_loop_filter_strength(src, 1, stride, beta, beta2, edge, p1, q1);
531 }
532 
533 av_cold void ff_rv40dsp_init(RV34DSPContext *c)
534 {
535  H264QpelContext qpel;
536 
537  ff_rv34dsp_init(c);
538  ff_h264qpel_init(&qpel, 8);
539 
540  c->put_pixels_tab[0][ 0] = qpel.put_h264_qpel_pixels_tab[0][0];
541  c->put_pixels_tab[0][ 1] = put_rv40_qpel16_mc10_c;
542  c->put_pixels_tab[0][ 2] = qpel.put_h264_qpel_pixels_tab[0][2];
543  c->put_pixels_tab[0][ 3] = put_rv40_qpel16_mc30_c;
544  c->put_pixels_tab[0][ 4] = put_rv40_qpel16_mc01_c;
545  c->put_pixels_tab[0][ 5] = put_rv40_qpel16_mc11_c;
546  c->put_pixels_tab[0][ 6] = put_rv40_qpel16_mc21_c;
547  c->put_pixels_tab[0][ 7] = put_rv40_qpel16_mc31_c;
548  c->put_pixels_tab[0][ 8] = qpel.put_h264_qpel_pixels_tab[0][8];
549  c->put_pixels_tab[0][ 9] = put_rv40_qpel16_mc12_c;
550  c->put_pixels_tab[0][10] = put_rv40_qpel16_mc22_c;
551  c->put_pixels_tab[0][11] = put_rv40_qpel16_mc32_c;
552  c->put_pixels_tab[0][12] = put_rv40_qpel16_mc03_c;
553  c->put_pixels_tab[0][13] = put_rv40_qpel16_mc13_c;
554  c->put_pixels_tab[0][14] = put_rv40_qpel16_mc23_c;
555  c->put_pixels_tab[0][15] = ff_put_rv40_qpel16_mc33_c;
556  c->avg_pixels_tab[0][ 0] = qpel.avg_h264_qpel_pixels_tab[0][0];
557  c->avg_pixels_tab[0][ 1] = avg_rv40_qpel16_mc10_c;
558  c->avg_pixels_tab[0][ 2] = qpel.avg_h264_qpel_pixels_tab[0][2];
559  c->avg_pixels_tab[0][ 3] = avg_rv40_qpel16_mc30_c;
560  c->avg_pixels_tab[0][ 4] = avg_rv40_qpel16_mc01_c;
561  c->avg_pixels_tab[0][ 5] = avg_rv40_qpel16_mc11_c;
562  c->avg_pixels_tab[0][ 6] = avg_rv40_qpel16_mc21_c;
563  c->avg_pixels_tab[0][ 7] = avg_rv40_qpel16_mc31_c;
564  c->avg_pixels_tab[0][ 8] = qpel.avg_h264_qpel_pixels_tab[0][8];
565  c->avg_pixels_tab[0][ 9] = avg_rv40_qpel16_mc12_c;
566  c->avg_pixels_tab[0][10] = avg_rv40_qpel16_mc22_c;
567  c->avg_pixels_tab[0][11] = avg_rv40_qpel16_mc32_c;
568  c->avg_pixels_tab[0][12] = avg_rv40_qpel16_mc03_c;
569  c->avg_pixels_tab[0][13] = avg_rv40_qpel16_mc13_c;
570  c->avg_pixels_tab[0][14] = avg_rv40_qpel16_mc23_c;
571  c->avg_pixels_tab[0][15] = ff_avg_rv40_qpel16_mc33_c;
572  c->put_pixels_tab[1][ 0] = qpel.put_h264_qpel_pixels_tab[1][0];
573  c->put_pixels_tab[1][ 1] = put_rv40_qpel8_mc10_c;
574  c->put_pixels_tab[1][ 2] = qpel.put_h264_qpel_pixels_tab[1][2];
575  c->put_pixels_tab[1][ 3] = put_rv40_qpel8_mc30_c;
576  c->put_pixels_tab[1][ 4] = put_rv40_qpel8_mc01_c;
577  c->put_pixels_tab[1][ 5] = put_rv40_qpel8_mc11_c;
578  c->put_pixels_tab[1][ 6] = put_rv40_qpel8_mc21_c;
579  c->put_pixels_tab[1][ 7] = put_rv40_qpel8_mc31_c;
580  c->put_pixels_tab[1][ 8] = qpel.put_h264_qpel_pixels_tab[1][8];
581  c->put_pixels_tab[1][ 9] = put_rv40_qpel8_mc12_c;
582  c->put_pixels_tab[1][10] = put_rv40_qpel8_mc22_c;
583  c->put_pixels_tab[1][11] = put_rv40_qpel8_mc32_c;
584  c->put_pixels_tab[1][12] = put_rv40_qpel8_mc03_c;
585  c->put_pixels_tab[1][13] = put_rv40_qpel8_mc13_c;
586  c->put_pixels_tab[1][14] = put_rv40_qpel8_mc23_c;
587  c->put_pixels_tab[1][15] = ff_put_rv40_qpel8_mc33_c;
588  c->avg_pixels_tab[1][ 0] = qpel.avg_h264_qpel_pixels_tab[1][0];
589  c->avg_pixels_tab[1][ 1] = avg_rv40_qpel8_mc10_c;
590  c->avg_pixels_tab[1][ 2] = qpel.avg_h264_qpel_pixels_tab[1][2];
591  c->avg_pixels_tab[1][ 3] = avg_rv40_qpel8_mc30_c;
592  c->avg_pixels_tab[1][ 4] = avg_rv40_qpel8_mc01_c;
593  c->avg_pixels_tab[1][ 5] = avg_rv40_qpel8_mc11_c;
594  c->avg_pixels_tab[1][ 6] = avg_rv40_qpel8_mc21_c;
595  c->avg_pixels_tab[1][ 7] = avg_rv40_qpel8_mc31_c;
596  c->avg_pixels_tab[1][ 8] = qpel.avg_h264_qpel_pixels_tab[1][8];
597  c->avg_pixels_tab[1][ 9] = avg_rv40_qpel8_mc12_c;
598  c->avg_pixels_tab[1][10] = avg_rv40_qpel8_mc22_c;
599  c->avg_pixels_tab[1][11] = avg_rv40_qpel8_mc32_c;
600  c->avg_pixels_tab[1][12] = avg_rv40_qpel8_mc03_c;
601  c->avg_pixels_tab[1][13] = avg_rv40_qpel8_mc13_c;
602  c->avg_pixels_tab[1][14] = avg_rv40_qpel8_mc23_c;
603  c->avg_pixels_tab[1][15] = ff_avg_rv40_qpel8_mc33_c;
604 
605  c->put_chroma_pixels_tab[0] = put_rv40_chroma_mc8_c;
606  c->put_chroma_pixels_tab[1] = put_rv40_chroma_mc4_c;
607  c->avg_chroma_pixels_tab[0] = avg_rv40_chroma_mc8_c;
608  c->avg_chroma_pixels_tab[1] = avg_rv40_chroma_mc4_c;
609 
610  c->rv40_weight_pixels_tab[0][0] = rv40_weight_func_rnd_16;
611  c->rv40_weight_pixels_tab[0][1] = rv40_weight_func_rnd_8;
612  c->rv40_weight_pixels_tab[1][0] = rv40_weight_func_nornd_16;
613  c->rv40_weight_pixels_tab[1][1] = rv40_weight_func_nornd_8;
614 
615  c->rv40_weak_loop_filter[0] = rv40_h_weak_loop_filter;
616  c->rv40_weak_loop_filter[1] = rv40_v_weak_loop_filter;
617  c->rv40_strong_loop_filter[0] = rv40_h_strong_loop_filter;
618  c->rv40_strong_loop_filter[1] = rv40_v_strong_loop_filter;
619  c->rv40_loop_filter_strength[0] = rv40_h_loop_filter_strength;
620  c->rv40_loop_filter_strength[1] = rv40_v_loop_filter_strength;
621 
622  if (ARCH_AARCH64)
623  ff_rv40dsp_init_aarch64(c);
624  if (ARCH_ARM)
625  ff_rv40dsp_init_arm(c);
626  if (ARCH_X86)
627  ff_rv40dsp_init_x86(c);
628 }
Generated on Sun Mar 23 2014 23:50:02 for FFmpeg by   doxygen 1.8.2