FFmpeg
me_cmp.c
Go to the documentation of this file.
1 /*
2  * DSP utils
3  * Copyright (c) 2000, 2001 Fabrice Bellard
4  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 #include "libavutil/attributes.h"
24 #include "libavutil/internal.h"
25 #include "avcodec.h"
26 #include "copy_block.h"
27 #include "simple_idct.h"
28 #include "me_cmp.h"
29 #include "mpegvideo.h"
30 #include "config.h"
31 
32 /* (i - 256) * (i - 256) */
33 const uint32_t ff_square_tab[512] = {
34  65536, 65025, 64516, 64009, 63504, 63001, 62500, 62001, 61504, 61009, 60516, 60025, 59536, 59049, 58564, 58081,
35  57600, 57121, 56644, 56169, 55696, 55225, 54756, 54289, 53824, 53361, 52900, 52441, 51984, 51529, 51076, 50625,
36  50176, 49729, 49284, 48841, 48400, 47961, 47524, 47089, 46656, 46225, 45796, 45369, 44944, 44521, 44100, 43681,
37  43264, 42849, 42436, 42025, 41616, 41209, 40804, 40401, 40000, 39601, 39204, 38809, 38416, 38025, 37636, 37249,
38  36864, 36481, 36100, 35721, 35344, 34969, 34596, 34225, 33856, 33489, 33124, 32761, 32400, 32041, 31684, 31329,
39  30976, 30625, 30276, 29929, 29584, 29241, 28900, 28561, 28224, 27889, 27556, 27225, 26896, 26569, 26244, 25921,
40  25600, 25281, 24964, 24649, 24336, 24025, 23716, 23409, 23104, 22801, 22500, 22201, 21904, 21609, 21316, 21025,
41  20736, 20449, 20164, 19881, 19600, 19321, 19044, 18769, 18496, 18225, 17956, 17689, 17424, 17161, 16900, 16641,
42  16384, 16129, 15876, 15625, 15376, 15129, 14884, 14641, 14400, 14161, 13924, 13689, 13456, 13225, 12996, 12769,
43  12544, 12321, 12100, 11881, 11664, 11449, 11236, 11025, 10816, 10609, 10404, 10201, 10000, 9801, 9604, 9409,
44  9216, 9025, 8836, 8649, 8464, 8281, 8100, 7921, 7744, 7569, 7396, 7225, 7056, 6889, 6724, 6561,
45  6400, 6241, 6084, 5929, 5776, 5625, 5476, 5329, 5184, 5041, 4900, 4761, 4624, 4489, 4356, 4225,
46  4096, 3969, 3844, 3721, 3600, 3481, 3364, 3249, 3136, 3025, 2916, 2809, 2704, 2601, 2500, 2401,
47  2304, 2209, 2116, 2025, 1936, 1849, 1764, 1681, 1600, 1521, 1444, 1369, 1296, 1225, 1156, 1089,
48  1024, 961, 900, 841, 784, 729, 676, 625, 576, 529, 484, 441, 400, 361, 324, 289,
49  256, 225, 196, 169, 144, 121, 100, 81, 64, 49, 36, 25, 16, 9, 4, 1,
50  0, 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225,
51  256, 289, 324, 361, 400, 441, 484, 529, 576, 625, 676, 729, 784, 841, 900, 961,
52  1024, 1089, 1156, 1225, 1296, 1369, 1444, 1521, 1600, 1681, 1764, 1849, 1936, 2025, 2116, 2209,
53  2304, 2401, 2500, 2601, 2704, 2809, 2916, 3025, 3136, 3249, 3364, 3481, 3600, 3721, 3844, 3969,
54  4096, 4225, 4356, 4489, 4624, 4761, 4900, 5041, 5184, 5329, 5476, 5625, 5776, 5929, 6084, 6241,
55  6400, 6561, 6724, 6889, 7056, 7225, 7396, 7569, 7744, 7921, 8100, 8281, 8464, 8649, 8836, 9025,
56  9216, 9409, 9604, 9801, 10000, 10201, 10404, 10609, 10816, 11025, 11236, 11449, 11664, 11881, 12100, 12321,
57  12544, 12769, 12996, 13225, 13456, 13689, 13924, 14161, 14400, 14641, 14884, 15129, 15376, 15625, 15876, 16129,
58  16384, 16641, 16900, 17161, 17424, 17689, 17956, 18225, 18496, 18769, 19044, 19321, 19600, 19881, 20164, 20449,
59  20736, 21025, 21316, 21609, 21904, 22201, 22500, 22801, 23104, 23409, 23716, 24025, 24336, 24649, 24964, 25281,
60  25600, 25921, 26244, 26569, 26896, 27225, 27556, 27889, 28224, 28561, 28900, 29241, 29584, 29929, 30276, 30625,
61  30976, 31329, 31684, 32041, 32400, 32761, 33124, 33489, 33856, 34225, 34596, 34969, 35344, 35721, 36100, 36481,
62  36864, 37249, 37636, 38025, 38416, 38809, 39204, 39601, 40000, 40401, 40804, 41209, 41616, 42025, 42436, 42849,
63  43264, 43681, 44100, 44521, 44944, 45369, 45796, 46225, 46656, 47089, 47524, 47961, 48400, 48841, 49284, 49729,
64  50176, 50625, 51076, 51529, 51984, 52441, 52900, 53361, 53824, 54289, 54756, 55225, 55696, 56169, 56644, 57121,
65  57600, 58081, 58564, 59049, 59536, 60025, 60516, 61009, 61504, 62001, 62500, 63001, 63504, 64009, 64516, 65025,
66 };
67 
68 static int sse4_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
69  ptrdiff_t stride, int h)
70 {
71  int s = 0, i;
72  const uint32_t *sq = ff_square_tab + 256;
73 
74  for (i = 0; i < h; i++) {
75  s += sq[pix1[0] - pix2[0]];
76  s += sq[pix1[1] - pix2[1]];
77  s += sq[pix1[2] - pix2[2]];
78  s += sq[pix1[3] - pix2[3]];
79  pix1 += stride;
80  pix2 += stride;
81  }
82  return s;
83 }
84 
85 static int sse8_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
86  ptrdiff_t stride, int h)
87 {
88  int s = 0, i;
89  const uint32_t *sq = ff_square_tab + 256;
90 
91  for (i = 0; i < h; i++) {
92  s += sq[pix1[0] - pix2[0]];
93  s += sq[pix1[1] - pix2[1]];
94  s += sq[pix1[2] - pix2[2]];
95  s += sq[pix1[3] - pix2[3]];
96  s += sq[pix1[4] - pix2[4]];
97  s += sq[pix1[5] - pix2[5]];
98  s += sq[pix1[6] - pix2[6]];
99  s += sq[pix1[7] - pix2[7]];
100  pix1 += stride;
101  pix2 += stride;
102  }
103  return s;
104 }
105 
106 static int sse16_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
107  ptrdiff_t stride, int h)
108 {
109  int s = 0, i;
110  const uint32_t *sq = ff_square_tab + 256;
111 
112  for (i = 0; i < h; i++) {
113  s += sq[pix1[0] - pix2[0]];
114  s += sq[pix1[1] - pix2[1]];
115  s += sq[pix1[2] - pix2[2]];
116  s += sq[pix1[3] - pix2[3]];
117  s += sq[pix1[4] - pix2[4]];
118  s += sq[pix1[5] - pix2[5]];
119  s += sq[pix1[6] - pix2[6]];
120  s += sq[pix1[7] - pix2[7]];
121  s += sq[pix1[8] - pix2[8]];
122  s += sq[pix1[9] - pix2[9]];
123  s += sq[pix1[10] - pix2[10]];
124  s += sq[pix1[11] - pix2[11]];
125  s += sq[pix1[12] - pix2[12]];
126  s += sq[pix1[13] - pix2[13]];
127  s += sq[pix1[14] - pix2[14]];
128  s += sq[pix1[15] - pix2[15]];
129 
130  pix1 += stride;
131  pix2 += stride;
132  }
133  return s;
134 }
135 
136 static int sum_abs_dctelem_c(int16_t *block)
137 {
138  int sum = 0, i;
139 
140  for (i = 0; i < 64; i++)
141  sum += FFABS(block[i]);
142  return sum;
143 }
144 
145 #define avg2(a, b) (((a) + (b) + 1) >> 1)
146 #define avg4(a, b, c, d) (((a) + (b) + (c) + (d) + 2) >> 2)
147 
148 static inline int pix_abs16_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
149  ptrdiff_t stride, int h)
150 {
151  int s = 0, i;
152 
153  for (i = 0; i < h; i++) {
154  s += abs(pix1[0] - pix2[0]);
155  s += abs(pix1[1] - pix2[1]);
156  s += abs(pix1[2] - pix2[2]);
157  s += abs(pix1[3] - pix2[3]);
158  s += abs(pix1[4] - pix2[4]);
159  s += abs(pix1[5] - pix2[5]);
160  s += abs(pix1[6] - pix2[6]);
161  s += abs(pix1[7] - pix2[7]);
162  s += abs(pix1[8] - pix2[8]);
163  s += abs(pix1[9] - pix2[9]);
164  s += abs(pix1[10] - pix2[10]);
165  s += abs(pix1[11] - pix2[11]);
166  s += abs(pix1[12] - pix2[12]);
167  s += abs(pix1[13] - pix2[13]);
168  s += abs(pix1[14] - pix2[14]);
169  s += abs(pix1[15] - pix2[15]);
170  pix1 += stride;
171  pix2 += stride;
172  }
173  return s;
174 }
175 
176 static inline int pix_median_abs16_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
177  ptrdiff_t stride, int h)
178 {
179  int s = 0, i, j;
180 
181 #define V(x) (pix1[x] - pix2[x])
182 
183  s += abs(V(0));
184  s += abs(V(1) - V(0));
185  s += abs(V(2) - V(1));
186  s += abs(V(3) - V(2));
187  s += abs(V(4) - V(3));
188  s += abs(V(5) - V(4));
189  s += abs(V(6) - V(5));
190  s += abs(V(7) - V(6));
191  s += abs(V(8) - V(7));
192  s += abs(V(9) - V(8));
193  s += abs(V(10) - V(9));
194  s += abs(V(11) - V(10));
195  s += abs(V(12) - V(11));
196  s += abs(V(13) - V(12));
197  s += abs(V(14) - V(13));
198  s += abs(V(15) - V(14));
199 
200  pix1 += stride;
201  pix2 += stride;
202 
203  for (i = 1; i < h; i++) {
204  s += abs(V(0) - V(-stride));
205  for (j = 1; j < 16; j++)
206  s += abs(V(j) - mid_pred(V(j-stride), V(j-1), V(j-stride) + V(j-1) - V(j-stride-1)));
207  pix1 += stride;
208  pix2 += stride;
209 
210  }
211 #undef V
212  return s;
213 }
214 
215 static int pix_abs16_x2_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
216  ptrdiff_t stride, int h)
217 {
218  int s = 0, i;
219 
220  for (i = 0; i < h; i++) {
221  s += abs(pix1[0] - avg2(pix2[0], pix2[1]));
222  s += abs(pix1[1] - avg2(pix2[1], pix2[2]));
223  s += abs(pix1[2] - avg2(pix2[2], pix2[3]));
224  s += abs(pix1[3] - avg2(pix2[3], pix2[4]));
225  s += abs(pix1[4] - avg2(pix2[4], pix2[5]));
226  s += abs(pix1[5] - avg2(pix2[5], pix2[6]));
227  s += abs(pix1[6] - avg2(pix2[6], pix2[7]));
228  s += abs(pix1[7] - avg2(pix2[7], pix2[8]));
229  s += abs(pix1[8] - avg2(pix2[8], pix2[9]));
230  s += abs(pix1[9] - avg2(pix2[9], pix2[10]));
231  s += abs(pix1[10] - avg2(pix2[10], pix2[11]));
232  s += abs(pix1[11] - avg2(pix2[11], pix2[12]));
233  s += abs(pix1[12] - avg2(pix2[12], pix2[13]));
234  s += abs(pix1[13] - avg2(pix2[13], pix2[14]));
235  s += abs(pix1[14] - avg2(pix2[14], pix2[15]));
236  s += abs(pix1[15] - avg2(pix2[15], pix2[16]));
237  pix1 += stride;
238  pix2 += stride;
239  }
240  return s;
241 }
242 
243 static int pix_abs16_y2_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
244  ptrdiff_t stride, int h)
245 {
246  int s = 0, i;
247  uint8_t *pix3 = pix2 + stride;
248 
249  for (i = 0; i < h; i++) {
250  s += abs(pix1[0] - avg2(pix2[0], pix3[0]));
251  s += abs(pix1[1] - avg2(pix2[1], pix3[1]));
252  s += abs(pix1[2] - avg2(pix2[2], pix3[2]));
253  s += abs(pix1[3] - avg2(pix2[3], pix3[3]));
254  s += abs(pix1[4] - avg2(pix2[4], pix3[4]));
255  s += abs(pix1[5] - avg2(pix2[5], pix3[5]));
256  s += abs(pix1[6] - avg2(pix2[6], pix3[6]));
257  s += abs(pix1[7] - avg2(pix2[7], pix3[7]));
258  s += abs(pix1[8] - avg2(pix2[8], pix3[8]));
259  s += abs(pix1[9] - avg2(pix2[9], pix3[9]));
260  s += abs(pix1[10] - avg2(pix2[10], pix3[10]));
261  s += abs(pix1[11] - avg2(pix2[11], pix3[11]));
262  s += abs(pix1[12] - avg2(pix2[12], pix3[12]));
263  s += abs(pix1[13] - avg2(pix2[13], pix3[13]));
264  s += abs(pix1[14] - avg2(pix2[14], pix3[14]));
265  s += abs(pix1[15] - avg2(pix2[15], pix3[15]));
266  pix1 += stride;
267  pix2 += stride;
268  pix3 += stride;
269  }
270  return s;
271 }
272 
273 static int pix_abs16_xy2_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
274  ptrdiff_t stride, int h)
275 {
276  int s = 0, i;
277  uint8_t *pix3 = pix2 + stride;
278 
279  for (i = 0; i < h; i++) {
280  s += abs(pix1[0] - avg4(pix2[0], pix2[1], pix3[0], pix3[1]));
281  s += abs(pix1[1] - avg4(pix2[1], pix2[2], pix3[1], pix3[2]));
282  s += abs(pix1[2] - avg4(pix2[2], pix2[3], pix3[2], pix3[3]));
283  s += abs(pix1[3] - avg4(pix2[3], pix2[4], pix3[3], pix3[4]));
284  s += abs(pix1[4] - avg4(pix2[4], pix2[5], pix3[4], pix3[5]));
285  s += abs(pix1[5] - avg4(pix2[5], pix2[6], pix3[5], pix3[6]));
286  s += abs(pix1[6] - avg4(pix2[6], pix2[7], pix3[6], pix3[7]));
287  s += abs(pix1[7] - avg4(pix2[7], pix2[8], pix3[7], pix3[8]));
288  s += abs(pix1[8] - avg4(pix2[8], pix2[9], pix3[8], pix3[9]));
289  s += abs(pix1[9] - avg4(pix2[9], pix2[10], pix3[9], pix3[10]));
290  s += abs(pix1[10] - avg4(pix2[10], pix2[11], pix3[10], pix3[11]));
291  s += abs(pix1[11] - avg4(pix2[11], pix2[12], pix3[11], pix3[12]));
292  s += abs(pix1[12] - avg4(pix2[12], pix2[13], pix3[12], pix3[13]));
293  s += abs(pix1[13] - avg4(pix2[13], pix2[14], pix3[13], pix3[14]));
294  s += abs(pix1[14] - avg4(pix2[14], pix2[15], pix3[14], pix3[15]));
295  s += abs(pix1[15] - avg4(pix2[15], pix2[16], pix3[15], pix3[16]));
296  pix1 += stride;
297  pix2 += stride;
298  pix3 += stride;
299  }
300  return s;
301 }
302 
303 static inline int pix_abs8_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
304  ptrdiff_t stride, int h)
305 {
306  int s = 0, i;
307 
308  for (i = 0; i < h; i++) {
309  s += abs(pix1[0] - pix2[0]);
310  s += abs(pix1[1] - pix2[1]);
311  s += abs(pix1[2] - pix2[2]);
312  s += abs(pix1[3] - pix2[3]);
313  s += abs(pix1[4] - pix2[4]);
314  s += abs(pix1[5] - pix2[5]);
315  s += abs(pix1[6] - pix2[6]);
316  s += abs(pix1[7] - pix2[7]);
317  pix1 += stride;
318  pix2 += stride;
319  }
320  return s;
321 }
322 
323 static inline int pix_median_abs8_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
324  ptrdiff_t stride, int h)
325 {
326  int s = 0, i, j;
327 
328 #define V(x) (pix1[x] - pix2[x])
329 
330  s += abs(V(0));
331  s += abs(V(1) - V(0));
332  s += abs(V(2) - V(1));
333  s += abs(V(3) - V(2));
334  s += abs(V(4) - V(3));
335  s += abs(V(5) - V(4));
336  s += abs(V(6) - V(5));
337  s += abs(V(7) - V(6));
338 
339  pix1 += stride;
340  pix2 += stride;
341 
342  for (i = 1; i < h; i++) {
343  s += abs(V(0) - V(-stride));
344  for (j = 1; j < 8; j++)
345  s += abs(V(j) - mid_pred(V(j-stride), V(j-1), V(j-stride) + V(j-1) - V(j-stride-1)));
346  pix1 += stride;
347  pix2 += stride;
348 
349  }
350 #undef V
351  return s;
352 }
353 
354 static int pix_abs8_x2_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
355  ptrdiff_t stride, int h)
356 {
357  int s = 0, i;
358 
359  for (i = 0; i < h; i++) {
360  s += abs(pix1[0] - avg2(pix2[0], pix2[1]));
361  s += abs(pix1[1] - avg2(pix2[1], pix2[2]));
362  s += abs(pix1[2] - avg2(pix2[2], pix2[3]));
363  s += abs(pix1[3] - avg2(pix2[3], pix2[4]));
364  s += abs(pix1[4] - avg2(pix2[4], pix2[5]));
365  s += abs(pix1[5] - avg2(pix2[5], pix2[6]));
366  s += abs(pix1[6] - avg2(pix2[6], pix2[7]));
367  s += abs(pix1[7] - avg2(pix2[7], pix2[8]));
368  pix1 += stride;
369  pix2 += stride;
370  }
371  return s;
372 }
373 
374 static int pix_abs8_y2_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
375  ptrdiff_t stride, int h)
376 {
377  int s = 0, i;
378  uint8_t *pix3 = pix2 + stride;
379 
380  for (i = 0; i < h; i++) {
381  s += abs(pix1[0] - avg2(pix2[0], pix3[0]));
382  s += abs(pix1[1] - avg2(pix2[1], pix3[1]));
383  s += abs(pix1[2] - avg2(pix2[2], pix3[2]));
384  s += abs(pix1[3] - avg2(pix2[3], pix3[3]));
385  s += abs(pix1[4] - avg2(pix2[4], pix3[4]));
386  s += abs(pix1[5] - avg2(pix2[5], pix3[5]));
387  s += abs(pix1[6] - avg2(pix2[6], pix3[6]));
388  s += abs(pix1[7] - avg2(pix2[7], pix3[7]));
389  pix1 += stride;
390  pix2 += stride;
391  pix3 += stride;
392  }
393  return s;
394 }
395 
396 static int pix_abs8_xy2_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
397  ptrdiff_t stride, int h)
398 {
399  int s = 0, i;
400  uint8_t *pix3 = pix2 + stride;
401 
402  for (i = 0; i < h; i++) {
403  s += abs(pix1[0] - avg4(pix2[0], pix2[1], pix3[0], pix3[1]));
404  s += abs(pix1[1] - avg4(pix2[1], pix2[2], pix3[1], pix3[2]));
405  s += abs(pix1[2] - avg4(pix2[2], pix2[3], pix3[2], pix3[3]));
406  s += abs(pix1[3] - avg4(pix2[3], pix2[4], pix3[3], pix3[4]));
407  s += abs(pix1[4] - avg4(pix2[4], pix2[5], pix3[4], pix3[5]));
408  s += abs(pix1[5] - avg4(pix2[5], pix2[6], pix3[5], pix3[6]));
409  s += abs(pix1[6] - avg4(pix2[6], pix2[7], pix3[6], pix3[7]));
410  s += abs(pix1[7] - avg4(pix2[7], pix2[8], pix3[7], pix3[8]));
411  pix1 += stride;
412  pix2 += stride;
413  pix3 += stride;
414  }
415  return s;
416 }
417 
418 static int nsse16_c(MpegEncContext *c, uint8_t *s1, uint8_t *s2,
419  ptrdiff_t stride, int h)
420 {
421  int score1 = 0, score2 = 0, x, y;
422 
423  for (y = 0; y < h; y++) {
424  for (x = 0; x < 16; x++)
425  score1 += (s1[x] - s2[x]) * (s1[x] - s2[x]);
426  if (y + 1 < h) {
427  for (x = 0; x < 15; x++)
428  score2 += FFABS(s1[x] - s1[x + stride] -
429  s1[x + 1] + s1[x + stride + 1]) -
430  FFABS(s2[x] - s2[x + stride] -
431  s2[x + 1] + s2[x + stride + 1]);
432  }
433  s1 += stride;
434  s2 += stride;
435  }
436 
437  if (c)
438  return score1 + FFABS(score2) * c->avctx->nsse_weight;
439  else
440  return score1 + FFABS(score2) * 8;
441 }
442 
443 static int nsse8_c(MpegEncContext *c, uint8_t *s1, uint8_t *s2,
444  ptrdiff_t stride, int h)
445 {
446  int score1 = 0, score2 = 0, x, y;
447 
448  for (y = 0; y < h; y++) {
449  for (x = 0; x < 8; x++)
450  score1 += (s1[x] - s2[x]) * (s1[x] - s2[x]);
451  if (y + 1 < h) {
452  for (x = 0; x < 7; x++)
453  score2 += FFABS(s1[x] - s1[x + stride] -
454  s1[x + 1] + s1[x + stride + 1]) -
455  FFABS(s2[x] - s2[x + stride] -
456  s2[x + 1] + s2[x + stride + 1]);
457  }
458  s1 += stride;
459  s2 += stride;
460  }
461 
462  if (c)
463  return score1 + FFABS(score2) * c->avctx->nsse_weight;
464  else
465  return score1 + FFABS(score2) * 8;
466 }
467 
468 static int zero_cmp(MpegEncContext *s, uint8_t *a, uint8_t *b,
469  ptrdiff_t stride, int h)
470 {
471  return 0;
472 }
473 
474 void ff_set_cmp(MECmpContext *c, me_cmp_func *cmp, int type)
475 {
476  int i;
477 
478  memset(cmp, 0, sizeof(void *) * 6);
479 
480  for (i = 0; i < 6; i++) {
481  switch (type & 0xFF) {
482  case FF_CMP_SAD:
483  cmp[i] = c->sad[i];
484  break;
485  case FF_CMP_MEDIAN_SAD:
486  cmp[i] = c->median_sad[i];
487  break;
488  case FF_CMP_SATD:
489  cmp[i] = c->hadamard8_diff[i];
490  break;
491  case FF_CMP_SSE:
492  cmp[i] = c->sse[i];
493  break;
494  case FF_CMP_DCT:
495  cmp[i] = c->dct_sad[i];
496  break;
497  case FF_CMP_DCT264:
498  cmp[i] = c->dct264_sad[i];
499  break;
500  case FF_CMP_DCTMAX:
501  cmp[i] = c->dct_max[i];
502  break;
503  case FF_CMP_PSNR:
504  cmp[i] = c->quant_psnr[i];
505  break;
506  case FF_CMP_BIT:
507  cmp[i] = c->bit[i];
508  break;
509  case FF_CMP_RD:
510  cmp[i] = c->rd[i];
511  break;
512  case FF_CMP_VSAD:
513  cmp[i] = c->vsad[i];
514  break;
515  case FF_CMP_VSSE:
516  cmp[i] = c->vsse[i];
517  break;
518  case FF_CMP_ZERO:
519  cmp[i] = zero_cmp;
520  break;
521  case FF_CMP_NSSE:
522  cmp[i] = c->nsse[i];
523  break;
524 #if CONFIG_DWT
525  case FF_CMP_W53:
526  cmp[i]= c->w53[i];
527  break;
528  case FF_CMP_W97:
529  cmp[i]= c->w97[i];
530  break;
531 #endif
532  default:
533  av_log(NULL, AV_LOG_ERROR,
534  "internal error in cmp function selection\n");
535  }
536  }
537 }
538 
539 #define BUTTERFLY2(o1, o2, i1, i2) \
540  o1 = (i1) + (i2); \
541  o2 = (i1) - (i2);
542 
543 #define BUTTERFLY1(x, y) \
544  { \
545  int a, b; \
546  a = x; \
547  b = y; \
548  x = a + b; \
549  y = a - b; \
550  }
551 
552 #define BUTTERFLYA(x, y) (FFABS((x) + (y)) + FFABS((x) - (y)))
553 
554 static int hadamard8_diff8x8_c(MpegEncContext *s, uint8_t *dst,
555  uint8_t *src, ptrdiff_t stride, int h)
556 {
557  int i, temp[64], sum = 0;
558 
559  av_assert2(h == 8);
560 
561  for (i = 0; i < 8; i++) {
562  // FIXME: try pointer walks
563  BUTTERFLY2(temp[8 * i + 0], temp[8 * i + 1],
564  src[stride * i + 0] - dst[stride * i + 0],
565  src[stride * i + 1] - dst[stride * i + 1]);
566  BUTTERFLY2(temp[8 * i + 2], temp[8 * i + 3],
567  src[stride * i + 2] - dst[stride * i + 2],
568  src[stride * i + 3] - dst[stride * i + 3]);
569  BUTTERFLY2(temp[8 * i + 4], temp[8 * i + 5],
570  src[stride * i + 4] - dst[stride * i + 4],
571  src[stride * i + 5] - dst[stride * i + 5]);
572  BUTTERFLY2(temp[8 * i + 6], temp[8 * i + 7],
573  src[stride * i + 6] - dst[stride * i + 6],
574  src[stride * i + 7] - dst[stride * i + 7]);
575 
576  BUTTERFLY1(temp[8 * i + 0], temp[8 * i + 2]);
577  BUTTERFLY1(temp[8 * i + 1], temp[8 * i + 3]);
578  BUTTERFLY1(temp[8 * i + 4], temp[8 * i + 6]);
579  BUTTERFLY1(temp[8 * i + 5], temp[8 * i + 7]);
580 
581  BUTTERFLY1(temp[8 * i + 0], temp[8 * i + 4]);
582  BUTTERFLY1(temp[8 * i + 1], temp[8 * i + 5]);
583  BUTTERFLY1(temp[8 * i + 2], temp[8 * i + 6]);
584  BUTTERFLY1(temp[8 * i + 3], temp[8 * i + 7]);
585  }
586 
587  for (i = 0; i < 8; i++) {
588  BUTTERFLY1(temp[8 * 0 + i], temp[8 * 1 + i]);
589  BUTTERFLY1(temp[8 * 2 + i], temp[8 * 3 + i]);
590  BUTTERFLY1(temp[8 * 4 + i], temp[8 * 5 + i]);
591  BUTTERFLY1(temp[8 * 6 + i], temp[8 * 7 + i]);
592 
593  BUTTERFLY1(temp[8 * 0 + i], temp[8 * 2 + i]);
594  BUTTERFLY1(temp[8 * 1 + i], temp[8 * 3 + i]);
595  BUTTERFLY1(temp[8 * 4 + i], temp[8 * 6 + i]);
596  BUTTERFLY1(temp[8 * 5 + i], temp[8 * 7 + i]);
597 
598  sum += BUTTERFLYA(temp[8 * 0 + i], temp[8 * 4 + i]) +
599  BUTTERFLYA(temp[8 * 1 + i], temp[8 * 5 + i]) +
600  BUTTERFLYA(temp[8 * 2 + i], temp[8 * 6 + i]) +
601  BUTTERFLYA(temp[8 * 3 + i], temp[8 * 7 + i]);
602  }
603  return sum;
604 }
605 
606 static int hadamard8_intra8x8_c(MpegEncContext *s, uint8_t *src,
607  uint8_t *dummy, ptrdiff_t stride, int h)
608 {
609  int i, temp[64], sum = 0;
610 
611  av_assert2(h == 8);
612 
613  for (i = 0; i < 8; i++) {
614  // FIXME: try pointer walks
615  BUTTERFLY2(temp[8 * i + 0], temp[8 * i + 1],
616  src[stride * i + 0], src[stride * i + 1]);
617  BUTTERFLY2(temp[8 * i + 2], temp[8 * i + 3],
618  src[stride * i + 2], src[stride * i + 3]);
619  BUTTERFLY2(temp[8 * i + 4], temp[8 * i + 5],
620  src[stride * i + 4], src[stride * i + 5]);
621  BUTTERFLY2(temp[8 * i + 6], temp[8 * i + 7],
622  src[stride * i + 6], src[stride * i + 7]);
623 
624  BUTTERFLY1(temp[8 * i + 0], temp[8 * i + 2]);
625  BUTTERFLY1(temp[8 * i + 1], temp[8 * i + 3]);
626  BUTTERFLY1(temp[8 * i + 4], temp[8 * i + 6]);
627  BUTTERFLY1(temp[8 * i + 5], temp[8 * i + 7]);
628 
629  BUTTERFLY1(temp[8 * i + 0], temp[8 * i + 4]);
630  BUTTERFLY1(temp[8 * i + 1], temp[8 * i + 5]);
631  BUTTERFLY1(temp[8 * i + 2], temp[8 * i + 6]);
632  BUTTERFLY1(temp[8 * i + 3], temp[8 * i + 7]);
633  }
634 
635  for (i = 0; i < 8; i++) {
636  BUTTERFLY1(temp[8 * 0 + i], temp[8 * 1 + i]);
637  BUTTERFLY1(temp[8 * 2 + i], temp[8 * 3 + i]);
638  BUTTERFLY1(temp[8 * 4 + i], temp[8 * 5 + i]);
639  BUTTERFLY1(temp[8 * 6 + i], temp[8 * 7 + i]);
640 
641  BUTTERFLY1(temp[8 * 0 + i], temp[8 * 2 + i]);
642  BUTTERFLY1(temp[8 * 1 + i], temp[8 * 3 + i]);
643  BUTTERFLY1(temp[8 * 4 + i], temp[8 * 6 + i]);
644  BUTTERFLY1(temp[8 * 5 + i], temp[8 * 7 + i]);
645 
646  sum +=
647  BUTTERFLYA(temp[8 * 0 + i], temp[8 * 4 + i])
648  + BUTTERFLYA(temp[8 * 1 + i], temp[8 * 5 + i])
649  + BUTTERFLYA(temp[8 * 2 + i], temp[8 * 6 + i])
650  + BUTTERFLYA(temp[8 * 3 + i], temp[8 * 7 + i]);
651  }
652 
653  sum -= FFABS(temp[8 * 0] + temp[8 * 4]); // -mean
654 
655  return sum;
656 }
657 
658 static int dct_sad8x8_c(MpegEncContext *s, uint8_t *src1,
659  uint8_t *src2, ptrdiff_t stride, int h)
660 {
661  LOCAL_ALIGNED_16(int16_t, temp, [64]);
662 
663  av_assert2(h == 8);
664 
665  s->pdsp.diff_pixels_unaligned(temp, src1, src2, stride);
666  s->fdsp.fdct(temp);
667  return s->mecc.sum_abs_dctelem(temp);
668 }
669 
670 #if CONFIG_GPL
671 #define DCT8_1D \
672  { \
673  const int s07 = SRC(0) + SRC(7); \
674  const int s16 = SRC(1) + SRC(6); \
675  const int s25 = SRC(2) + SRC(5); \
676  const int s34 = SRC(3) + SRC(4); \
677  const int a0 = s07 + s34; \
678  const int a1 = s16 + s25; \
679  const int a2 = s07 - s34; \
680  const int a3 = s16 - s25; \
681  const int d07 = SRC(0) - SRC(7); \
682  const int d16 = SRC(1) - SRC(6); \
683  const int d25 = SRC(2) - SRC(5); \
684  const int d34 = SRC(3) - SRC(4); \
685  const int a4 = d16 + d25 + (d07 + (d07 >> 1)); \
686  const int a5 = d07 - d34 - (d25 + (d25 >> 1)); \
687  const int a6 = d07 + d34 - (d16 + (d16 >> 1)); \
688  const int a7 = d16 - d25 + (d34 + (d34 >> 1)); \
689  DST(0, a0 + a1); \
690  DST(1, a4 + (a7 >> 2)); \
691  DST(2, a2 + (a3 >> 1)); \
692  DST(3, a5 + (a6 >> 2)); \
693  DST(4, a0 - a1); \
694  DST(5, a6 - (a5 >> 2)); \
695  DST(6, (a2 >> 1) - a3); \
696  DST(7, (a4 >> 2) - a7); \
697  }
698 
699 static int dct264_sad8x8_c(MpegEncContext *s, uint8_t *src1,
700  uint8_t *src2, ptrdiff_t stride, int h)
701 {
702  int16_t dct[8][8];
703  int i, sum = 0;
704 
705  s->pdsp.diff_pixels_unaligned(dct[0], src1, src2, stride);
706 
707 #define SRC(x) dct[i][x]
708 #define DST(x, v) dct[i][x] = v
709  for (i = 0; i < 8; i++)
710  DCT8_1D
711 #undef SRC
712 #undef DST
713 
714 #define SRC(x) dct[x][i]
715 #define DST(x, v) sum += FFABS(v)
716  for (i = 0; i < 8; i++)
717  DCT8_1D
718 #undef SRC
719 #undef DST
720  return sum;
721 }
722 #endif
723 
724 static int dct_max8x8_c(MpegEncContext *s, uint8_t *src1,
725  uint8_t *src2, ptrdiff_t stride, int h)
726 {
727  LOCAL_ALIGNED_16(int16_t, temp, [64]);
728  int sum = 0, i;
729 
730  av_assert2(h == 8);
731 
732  s->pdsp.diff_pixels_unaligned(temp, src1, src2, stride);
733  s->fdsp.fdct(temp);
734 
735  for (i = 0; i < 64; i++)
736  sum = FFMAX(sum, FFABS(temp[i]));
737 
738  return sum;
739 }
740 
741 static int quant_psnr8x8_c(MpegEncContext *s, uint8_t *src1,
742  uint8_t *src2, ptrdiff_t stride, int h)
743 {
744  LOCAL_ALIGNED_16(int16_t, temp, [64 * 2]);
745  int16_t *const bak = temp + 64;
746  int sum = 0, i;
747 
748  av_assert2(h == 8);
749  s->mb_intra = 0;
750 
751  s->pdsp.diff_pixels_unaligned(temp, src1, src2, stride);
752 
753  memcpy(bak, temp, 64 * sizeof(int16_t));
754 
755  s->block_last_index[0 /* FIXME */] =
756  s->fast_dct_quantize(s, temp, 0 /* FIXME */, s->qscale, &i);
757  s->dct_unquantize_inter(s, temp, 0, s->qscale);
758  ff_simple_idct_int16_8bit(temp); // FIXME
759 
760  for (i = 0; i < 64; i++)
761  sum += (temp[i] - bak[i]) * (temp[i] - bak[i]);
762 
763  return sum;
764 }
765 
766 static int rd8x8_c(MpegEncContext *s, uint8_t *src1, uint8_t *src2,
767  ptrdiff_t stride, int h)
768 {
769  const uint8_t *scantable = s->intra_scantable.permutated;
770  LOCAL_ALIGNED_16(int16_t, temp, [64]);
771  LOCAL_ALIGNED_16(uint8_t, lsrc1, [64]);
772  LOCAL_ALIGNED_16(uint8_t, lsrc2, [64]);
773  int i, last, run, bits, level, distortion, start_i;
774  const int esc_length = s->ac_esc_length;
775  uint8_t *length, *last_length;
776 
777  av_assert2(h == 8);
778 
779  copy_block8(lsrc1, src1, 8, stride, 8);
780  copy_block8(lsrc2, src2, 8, stride, 8);
781 
782  s->pdsp.diff_pixels(temp, lsrc1, lsrc2, 8);
783 
784  s->block_last_index[0 /* FIXME */] =
785  last =
786  s->fast_dct_quantize(s, temp, 0 /* FIXME */, s->qscale, &i);
787 
788  bits = 0;
789 
790  if (s->mb_intra) {
791  start_i = 1;
792  length = s->intra_ac_vlc_length;
793  last_length = s->intra_ac_vlc_last_length;
794  bits += s->luma_dc_vlc_length[temp[0] + 256]; // FIXME: chroma
795  } else {
796  start_i = 0;
797  length = s->inter_ac_vlc_length;
798  last_length = s->inter_ac_vlc_last_length;
799  }
800 
801  if (last >= start_i) {
802  run = 0;
803  for (i = start_i; i < last; i++) {
804  int j = scantable[i];
805  level = temp[j];
806 
807  if (level) {
808  level += 64;
809  if ((level & (~127)) == 0)
810  bits += length[UNI_AC_ENC_INDEX(run, level)];
811  else
812  bits += esc_length;
813  run = 0;
814  } else
815  run++;
816  }
817  i = scantable[last];
818 
819  level = temp[i] + 64;
820 
821  av_assert2(level - 64);
822 
823  if ((level & (~127)) == 0) {
824  bits += last_length[UNI_AC_ENC_INDEX(run, level)];
825  } else
826  bits += esc_length;
827  }
828 
829  if (last >= 0) {
830  if (s->mb_intra)
831  s->dct_unquantize_intra(s, temp, 0, s->qscale);
832  else
833  s->dct_unquantize_inter(s, temp, 0, s->qscale);
834  }
835 
836  s->idsp.idct_add(lsrc2, 8, temp);
837 
838  distortion = s->mecc.sse[1](NULL, lsrc2, lsrc1, 8, 8);
839 
840  return distortion + ((bits * s->qscale * s->qscale * 109 + 64) >> 7);
841 }
842 
843 static int bit8x8_c(MpegEncContext *s, uint8_t *src1, uint8_t *src2,
844  ptrdiff_t stride, int h)
845 {
846  const uint8_t *scantable = s->intra_scantable.permutated;
847  LOCAL_ALIGNED_16(int16_t, temp, [64]);
848  int i, last, run, bits, level, start_i;
849  const int esc_length = s->ac_esc_length;
850  uint8_t *length, *last_length;
851 
852  av_assert2(h == 8);
853 
854  s->pdsp.diff_pixels_unaligned(temp, src1, src2, stride);
855 
856  s->block_last_index[0 /* FIXME */] =
857  last =
858  s->fast_dct_quantize(s, temp, 0 /* FIXME */, s->qscale, &i);
859 
860  bits = 0;
861 
862  if (s->mb_intra) {
863  start_i = 1;
864  length = s->intra_ac_vlc_length;
865  last_length = s->intra_ac_vlc_last_length;
866  bits += s->luma_dc_vlc_length[temp[0] + 256]; // FIXME: chroma
867  } else {
868  start_i = 0;
869  length = s->inter_ac_vlc_length;
870  last_length = s->inter_ac_vlc_last_length;
871  }
872 
873  if (last >= start_i) {
874  run = 0;
875  for (i = start_i; i < last; i++) {
876  int j = scantable[i];
877  level = temp[j];
878 
879  if (level) {
880  level += 64;
881  if ((level & (~127)) == 0)
882  bits += length[UNI_AC_ENC_INDEX(run, level)];
883  else
884  bits += esc_length;
885  run = 0;
886  } else
887  run++;
888  }
889  i = scantable[last];
890 
891  level = temp[i] + 64;
892 
893  av_assert2(level - 64);
894 
895  if ((level & (~127)) == 0)
896  bits += last_length[UNI_AC_ENC_INDEX(run, level)];
897  else
898  bits += esc_length;
899  }
900 
901  return bits;
902 }
903 
904 #define VSAD_INTRA(size) \
905 static int vsad_intra ## size ## _c(MpegEncContext *c, \
906  uint8_t *s, uint8_t *dummy, \
907  ptrdiff_t stride, int h) \
908 { \
909  int score = 0, x, y; \
910  \
911  for (y = 1; y < h; y++) { \
912  for (x = 0; x < size; x += 4) { \
913  score += FFABS(s[x] - s[x + stride]) + \
914  FFABS(s[x + 1] - s[x + stride + 1]) + \
915  FFABS(s[x + 2] - s[x + 2 + stride]) + \
916  FFABS(s[x + 3] - s[x + 3 + stride]); \
917  } \
918  s += stride; \
919  } \
920  \
921  return score; \
922 }
923 VSAD_INTRA(8)
924 VSAD_INTRA(16)
925 
926 #define VSAD(size) \
927 static int vsad ## size ## _c(MpegEncContext *c, \
928  uint8_t *s1, uint8_t *s2, \
929  ptrdiff_t stride, int h) \
930 { \
931  int score = 0, x, y; \
932  \
933  for (y = 1; y < h; y++) { \
934  for (x = 0; x < size; x++) \
935  score += FFABS(s1[x] - s2[x] - s1[x + stride] + s2[x + stride]); \
936  s1 += stride; \
937  s2 += stride; \
938  } \
939  \
940  return score; \
941 }
942 VSAD(8)
943 VSAD(16)
944 
945 #define SQ(a) ((a) * (a))
946 #define VSSE_INTRA(size) \
947 static int vsse_intra ## size ## _c(MpegEncContext *c, \
948  uint8_t *s, uint8_t *dummy, \
949  ptrdiff_t stride, int h) \
950 { \
951  int score = 0, x, y; \
952  \
953  for (y = 1; y < h; y++) { \
954  for (x = 0; x < size; x += 4) { \
955  score += SQ(s[x] - s[x + stride]) + \
956  SQ(s[x + 1] - s[x + stride + 1]) + \
957  SQ(s[x + 2] - s[x + stride + 2]) + \
958  SQ(s[x + 3] - s[x + stride + 3]); \
959  } \
960  s += stride; \
961  } \
962  \
963  return score; \
964 }
965 VSSE_INTRA(8)
966 VSSE_INTRA(16)
967 
968 #define VSSE(size) \
969 static int vsse ## size ## _c(MpegEncContext *c, uint8_t *s1, uint8_t *s2, \
970  ptrdiff_t stride, int h) \
971 { \
972  int score = 0, x, y; \
973  \
974  for (y = 1; y < h; y++) { \
975  for (x = 0; x < size; x++) \
976  score += SQ(s1[x] - s2[x] - s1[x + stride] + s2[x + stride]); \
977  s1 += stride; \
978  s2 += stride; \
979  } \
980  \
981  return score; \
982 }
983 VSSE(8)
984 VSSE(16)
985 
986 #define WRAPPER8_16_SQ(name8, name16) \
987 static int name16(MpegEncContext *s, uint8_t *dst, uint8_t *src, \
988  ptrdiff_t stride, int h) \
989 { \
990  int score = 0; \
991  \
992  score += name8(s, dst, src, stride, 8); \
993  score += name8(s, dst + 8, src + 8, stride, 8); \
994  if (h == 16) { \
995  dst += 8 * stride; \
996  src += 8 * stride; \
997  score += name8(s, dst, src, stride, 8); \
998  score += name8(s, dst + 8, src + 8, stride, 8); \
999  } \
1000  return score; \
1001 }
1002 
1003 WRAPPER8_16_SQ(hadamard8_diff8x8_c, hadamard8_diff16_c)
1004 WRAPPER8_16_SQ(hadamard8_intra8x8_c, hadamard8_intra16_c)
1005 WRAPPER8_16_SQ(dct_sad8x8_c, dct_sad16_c)
1006 #if CONFIG_GPL
1007 WRAPPER8_16_SQ(dct264_sad8x8_c, dct264_sad16_c)
1008 #endif
1009 WRAPPER8_16_SQ(dct_max8x8_c, dct_max16_c)
1010 WRAPPER8_16_SQ(quant_psnr8x8_c, quant_psnr16_c)
1011 WRAPPER8_16_SQ(rd8x8_c, rd16_c)
1012 WRAPPER8_16_SQ(bit8x8_c, bit16_c)
1013 
1014 int ff_check_alignment(void)
1015 {
1016  static int did_fail = 0;
1017  LOCAL_ALIGNED_16(int, aligned, [4]);
1018 
1019  if ((intptr_t)aligned & 15) {
1020  if (!did_fail) {
1021 #if HAVE_MMX || HAVE_ALTIVEC
1022  av_log(NULL, AV_LOG_ERROR,
1023  "Compiler did not align stack variables. Libavcodec has been miscompiled\n"
1024  "and may be very slow or crash. This is not a bug in libavcodec,\n"
1025  "but in the compiler. You may try recompiling using gcc >= 4.2.\n"
1026  "Do not report crashes to FFmpeg developers.\n");
1027 #endif
1028  did_fail=1;
1029  }
1030  return -1;
1031  }
1032  return 0;
1033 }
1034 
1035 av_cold void ff_me_cmp_init(MECmpContext *c, AVCodecContext *avctx)
1036 {
1037  ff_check_alignment();
1038 
1039  c->sum_abs_dctelem = sum_abs_dctelem_c;
1040 
1041  /* TODO [0] 16 [1] 8 */
1042  c->pix_abs[0][0] = pix_abs16_c;
1043  c->pix_abs[0][1] = pix_abs16_x2_c;
1044  c->pix_abs[0][2] = pix_abs16_y2_c;
1045  c->pix_abs[0][3] = pix_abs16_xy2_c;
1046  c->pix_abs[1][0] = pix_abs8_c;
1047  c->pix_abs[1][1] = pix_abs8_x2_c;
1048  c->pix_abs[1][2] = pix_abs8_y2_c;
1049  c->pix_abs[1][3] = pix_abs8_xy2_c;
1050 
1051 #define SET_CMP_FUNC(name) \
1052  c->name[0] = name ## 16_c; \
1053  c->name[1] = name ## 8x8_c;
1054 
1055  SET_CMP_FUNC(hadamard8_diff)
1056  c->hadamard8_diff[4] = hadamard8_intra16_c;
1057  c->hadamard8_diff[5] = hadamard8_intra8x8_c;
1058  SET_CMP_FUNC(dct_sad)
1059  SET_CMP_FUNC(dct_max)
1060 #if CONFIG_GPL
1061  SET_CMP_FUNC(dct264_sad)
1062 #endif
1063  c->sad[0] = pix_abs16_c;
1064  c->sad[1] = pix_abs8_c;
1065  c->sse[0] = sse16_c;
1066  c->sse[1] = sse8_c;
1067  c->sse[2] = sse4_c;
1068  SET_CMP_FUNC(quant_psnr)
1069  SET_CMP_FUNC(rd)
1070  SET_CMP_FUNC(bit)
1071  c->vsad[0] = vsad16_c;
1072  c->vsad[1] = vsad8_c;
1073  c->vsad[4] = vsad_intra16_c;
1074  c->vsad[5] = vsad_intra8_c;
1075  c->vsse[0] = vsse16_c;
1076  c->vsse[1] = vsse8_c;
1077  c->vsse[4] = vsse_intra16_c;
1078  c->vsse[5] = vsse_intra8_c;
1079  c->nsse[0] = nsse16_c;
1080  c->nsse[1] = nsse8_c;
1081 #if CONFIG_SNOW_DECODER || CONFIG_SNOW_ENCODER
1082  ff_dsputil_init_dwt(c);
1083 #endif
1084 
1085  if (ARCH_ALPHA)
1086  ff_me_cmp_init_alpha(c, avctx);
1087  if (ARCH_ARM)
1088  ff_me_cmp_init_arm(c, avctx);
1089  if (ARCH_PPC)
1090  ff_me_cmp_init_ppc(c, avctx);
1091  if (ARCH_X86)
1092  ff_me_cmp_init_x86(c, avctx);
1093  if (ARCH_MIPS)
1094  ff_me_cmp_init_mips(c, avctx);
1095 
1096  c->median_sad[0] = pix_median_abs16_c;
1097  c->median_sad[1] = pix_median_abs8_c;
1098 }
avg4
#define avg4(a, b, c, d)
Definition: me_cmp.c:146
ff_me_cmp_init
av_cold void ff_me_cmp_init(MECmpContext *c, AVCodecContext *avctx)
Definition: me_cmp.c:1035
ff_me_cmp_init_ppc
av_cold void ff_me_cmp_init_ppc(MECmpContext *c, AVCodecContext *avctx)
Definition: me_cmp.c:726
MpegEncContext::idsp
IDCTDSPContext idsp
Definition: mpegvideo.h:230
NULL
#define NULL
Definition: coverity.c:32
dct_max8x8_c
static int dct_max8x8_c(MpegEncContext *s, uint8_t *src1, uint8_t *src2, ptrdiff_t stride, int h)
Definition: me_cmp.c:724
MECmpContext::sum_abs_dctelem
int(* sum_abs_dctelem)(int16_t *block)
Definition: me_cmp.h:54
hadamard8_intra8x8_c
static int hadamard8_intra8x8_c(MpegEncContext *s, uint8_t *src, uint8_t *dummy, ptrdiff_t stride, int h)
Definition: me_cmp.c:606
h
h
Definition: vp9dsp_template.c:2038
FF_CMP_DCTMAX
#define FF_CMP_DCTMAX
Definition: avcodec.h:1075
BUTTERFLY1
#define BUTTERFLY1(x, y)
Definition: me_cmp.c:543
temp
else temp
Definition: vf_mcdeint.c:256
zero_cmp
static int zero_cmp(MpegEncContext *s, uint8_t *a, uint8_t *b, ptrdiff_t stride, int h)
Definition: me_cmp.c:468
MECmpContext::w53
me_cmp_func w53[6]
Definition: me_cmp.h:66
MECmpContext::dct_max
me_cmp_func dct_max[6]
Definition: me_cmp.h:68
ff_simple_idct_int16_8bit
void ff_simple_idct_int16_8bit(int16_t *block)
a
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:36
pix_median_abs16_c
static int pix_median_abs16_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t stride, int h)
Definition: me_cmp.c:176
type
GLint GLenum type
Definition: opengl_enc.c:104
nsse8_c
static int nsse8_c(MpegEncContext *c, uint8_t *s1, uint8_t *s2, ptrdiff_t stride, int h)
Definition: me_cmp.c:443
FF_CMP_W97
#define FF_CMP_W97
Definition: avcodec.h:1074
mpegvideo.h
mpegvideo header.
ScanTable::permutated
uint8_t permutated[64]
Definition: idctdsp.h:33
run
uint8_t run
Definition: svq3.c:208
MpegEncContext::intra_ac_vlc_length
uint8_t * intra_ac_vlc_length
Definition: mpegvideo.h:311
UNI_AC_ENC_INDEX
#define UNI_AC_ENC_INDEX(run, level)
Definition: mpegvideo.h:318
copy_block8
static void copy_block8(uint8_t *dst, const uint8_t *src, ptrdiff_t dstStride, ptrdiff_t srcStride, int h)
Definition: copy_block.h:47
MpegEncContext::qscale
int qscale
QP.
Definition: mpegvideo.h:204
MECmpContext::dct_sad
me_cmp_func dct_sad[6]
Definition: me_cmp.h:59
attributes.h
Macro definitions for various function/variable attributes.
MECmpContext::hadamard8_diff
me_cmp_func hadamard8_diff[6]
Definition: me_cmp.h:58
dct_sad8x8_c
static int dct_sad8x8_c(MpegEncContext *s, uint8_t *src1, uint8_t *src2, ptrdiff_t stride, int h)
Definition: me_cmp.c:658
V
#define V(x)
pix_abs16_xy2_c
static int pix_abs16_xy2_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t stride, int h)
Definition: me_cmp.c:273
block
The exact code depends on how similar the blocks are and how related they are to the block
Definition: filter_design.txt:207
uint8_t
uint8_t
Definition: audio_convert.c:194
av_cold
#define av_cold
Definition: attributes.h:82
av_assert2
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:64
SET_CMP_FUNC
#define SET_CMP_FUNC(name)
rd8x8_c
static int rd8x8_c(MpegEncContext *s, uint8_t *src1, uint8_t *src2, ptrdiff_t stride, int h)
Definition: me_cmp.c:766
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
PixblockDSPContext::diff_pixels
void(* diff_pixels)(int16_t *av_restrict block, const uint8_t *s1, const uint8_t *s2, ptrdiff_t stride)
Definition: pixblockdsp.h:35
ff_square_tab
const uint32_t ff_square_tab[512]
Definition: me_cmp.c:33
FF_CMP_VSSE
#define FF_CMP_VSSE
Definition: avcodec.h:1071
MECmpContext::dct264_sad
me_cmp_func dct264_sad[6]
Definition: me_cmp.h:69
VSSE
#define VSSE(size)
Definition: me_cmp.c:968
MECmpContext::nsse
me_cmp_func nsse[6]
Definition: me_cmp.h:65
me_cmp_func
int(* me_cmp_func)(struct MpegEncContext *c, uint8_t *blk1, uint8_t *blk2, ptrdiff_t stride, int h)
Definition: me_cmp.h:48
BUTTERFLY2
#define BUTTERFLY2(o1, o2, i1, i2)
Definition: me_cmp.c:539
pix_abs16_c
static int pix_abs16_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t stride, int h)
Definition: me_cmp.c:148
avg2
#define avg2(a, b)
Definition: me_cmp.c:145
FF_CMP_SSE
#define FF_CMP_SSE
Definition: avcodec.h:1063
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
ff_me_cmp_init_mips
void ff_me_cmp_init_mips(MECmpContext *c, AVCodecContext *avctx)
Definition: me_cmp_init_mips.c:51
aligned
static int aligned(int val)
Definition: dashdec.c:171
FF_CMP_MEDIAN_SAD
#define FF_CMP_MEDIAN_SAD
Definition: avcodec.h:1077
src
#define src
Definition: vp8dsp.c:254
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
MpegEncContext::inter_ac_vlc_last_length
uint8_t * inter_ac_vlc_last_length
Definition: mpegvideo.h:316
s2
#define s2
Definition: regdef.h:39
sse4_c
static int sse4_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t stride, int h)
Definition: me_cmp.c:68
MpegEncContext::pdsp
PixblockDSPContext pdsp
Definition: mpegvideo.h:234
length
GLsizei GLsizei * length
Definition: opengl_enc.c:114
MECmpContext::pix_abs
me_cmp_func pix_abs[2][4]
Definition: me_cmp.h:78
bits
uint8_t bits
Definition: vp3data.h:202
FFMAX
#define FFMAX(a, b)
Definition: common.h:94
MECmpContext::bit
me_cmp_func bit[6]
Definition: me_cmp.h:61
internal.h
common internal API header
MpegEncContext::intra_ac_vlc_last_length
uint8_t * intra_ac_vlc_last_length
Definition: mpegvideo.h:312
MECmpContext::vsse
me_cmp_func vsse[6]
Definition: me_cmp.h:64
FF_CMP_BIT
#define FF_CMP_BIT
Definition: avcodec.h:1067
b
#define b
Definition: input.c:41
ff_me_cmp_init_alpha
av_cold void ff_me_cmp_init_alpha(MECmpContext *c, AVCodecContext *avctx)
Definition: me_cmp_alpha.c:305
pix_abs8_xy2_c
static int pix_abs8_xy2_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t stride, int h)
Definition: me_cmp.c:396
MECmpContext::vsad
me_cmp_func vsad[6]
Definition: me_cmp.h:63
IDCTDSPContext::idct_add
void(* idct_add)(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
block -> idct -> add dest -> clip to unsigned 8 bit -> dest.
Definition: idctdsp.h:79
FFABS
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
s
#define s(width, name)
Definition: cbs_vp9.c:257
WRAPPER8_16_SQ
#define WRAPPER8_16_SQ(name8, name16)
Definition: me_cmp.c:986
cmp
static av_always_inline int cmp(MpegEncContext *s, const int x, const int y, const int subx, const int suby, const int size, const int h, int ref_index, int src_index, me_cmp_func cmp_func, me_cmp_func chroma_cmp_func, const int flags)
compares a block (either a full macroblock or a partition thereof) against a proposed motion-compensa...
Definition: motion_est.c:260
MpegEncContext::block_last_index
int block_last_index[12]
last non zero coefficient in block
Definition: mpegvideo.h:86
dummy
int dummy
Definition: motion.c:64
sse16_c
static int sse16_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t stride, int h)
Definition: me_cmp.c:106
FDCTDSPContext::fdct
void(* fdct)(int16_t *block)
Definition: fdctdsp.h:27
pix_abs8_c
static int pix_abs8_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t stride, int h)
Definition: me_cmp.c:303
MpegEncContext::ac_esc_length
int ac_esc_length
num of bits needed to encode the longest esc
Definition: mpegvideo.h:310
FF_CMP_SAD
#define FF_CMP_SAD
Definition: avcodec.h:1062
sse8_c
static int sse8_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t stride, int h)
Definition: me_cmp.c:85
me_cmp.h
src1
#define src1
Definition: h264pred.c:139
MpegEncContext::luma_dc_vlc_length
uint8_t * luma_dc_vlc_length
Definition: mpegvideo.h:317
MECmpContext::rd
me_cmp_func rd[6]
Definition: me_cmp.h:62
avcodec.h
Libavcodec external API header.
copy_block.h
FF_CMP_RD
#define FF_CMP_RD
Definition: avcodec.h:1068
ff_set_cmp
void ff_set_cmp(MECmpContext *c, me_cmp_func *cmp, int type)
Definition: me_cmp.c:474
abs
#define abs(x)
Definition: cuda_runtime.h:35
AVCodecContext
main external API structure.
Definition: avcodec.h:657
MpegEncContext::intra_scantable
ScanTable intra_scantable
Definition: mpegvideo.h:91
FF_CMP_NSSE
#define FF_CMP_NSSE
Definition: avcodec.h:1072
FF_CMP_SATD
#define FF_CMP_SATD
Definition: avcodec.h:1064
MpegEncContext::fdsp
FDCTDSPContext fdsp
Definition: mpegvideo.h:227
VSSE_INTRA
#define VSSE_INTRA(size)
Definition: me_cmp.c:946
FF_CMP_DCT
#define FF_CMP_DCT
Definition: avcodec.h:1065
MpegEncContext::inter_ac_vlc_length
uint8_t * inter_ac_vlc_length
Definition: mpegvideo.h:315
nsse16_c
static int nsse16_c(MpegEncContext *c, uint8_t *s1, uint8_t *s2, ptrdiff_t stride, int h)
Definition: me_cmp.c:418
ff_me_cmp_init_arm
av_cold void ff_me_cmp_init_arm(MECmpContext *c, AVCodecContext *avctx)
Definition: me_cmp_init_arm.c:41
mid_pred
#define mid_pred
Definition: mathops.h:97
FF_CMP_PSNR
#define FF_CMP_PSNR
Definition: avcodec.h:1066
DCT8_1D
#define DCT8_1D(src, srcstride, dst, dststride)
Definition: h264dsp.c:93
s1
#define s1
Definition: regdef.h:38
FF_CMP_W53
#define FF_CMP_W53
Definition: avcodec.h:1073
FF_CMP_DCT264
#define FF_CMP_DCT264
Definition: avcodec.h:1076
MECmpContext::median_sad
me_cmp_func median_sad[6]
Definition: me_cmp.h:79
quant_psnr8x8_c
static int quant_psnr8x8_c(MpegEncContext *s, uint8_t *src1, uint8_t *src2, ptrdiff_t stride, int h)
Definition: me_cmp.c:741
level
uint8_t level
Definition: svq3.c:209
MECmpContext::sad
me_cmp_func sad[6]
Definition: me_cmp.h:56
MECmpContext::sse
me_cmp_func sse[6]
Definition: me_cmp.h:57
FF_CMP_ZERO
#define FF_CMP_ZERO
Definition: avcodec.h:1069
MpegEncContext
MpegEncContext.
Definition: mpegvideo.h:81
MpegEncContext::avctx
struct AVCodecContext * avctx
Definition: mpegvideo.h:98
MpegEncContext::dct_unquantize_inter
void(* dct_unquantize_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:535
stride
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:104
pix_abs8_y2_c
static int pix_abs8_y2_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t stride, int h)
Definition: me_cmp.c:374
MpegEncContext::fast_dct_quantize
int(* fast_dct_quantize)(struct MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow)
Definition: mpegvideo.h:538
MpegEncContext::mecc
MECmpContext mecc
Definition: mpegvideo.h:231
DST
#define DST(x, y)
Definition: vp9dsp_template.c:781
VSAD
#define VSAD(size)
Definition: me_cmp.c:926
AVCodecContext::nsse_weight
int nsse_weight
noise vs.
Definition: avcodec.h:1983
bit
#define bit(string, value)
Definition: cbs_mpeg2.c:58
pix_abs16_x2_c
static int pix_abs16_x2_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t stride, int h)
Definition: me_cmp.c:215
BUTTERFLYA
#define BUTTERFLYA(x, y)
Definition: me_cmp.c:552
pix_abs8_x2_c
static int pix_abs8_x2_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t stride, int h)
Definition: me_cmp.c:354
FF_CMP_VSAD
#define FF_CMP_VSAD
Definition: avcodec.h:1070
PixblockDSPContext::diff_pixels_unaligned
void(* diff_pixels_unaligned)(int16_t *av_restrict block, const uint8_t *s1, const uint8_t *s2, ptrdiff_t stride)
Definition: pixblockdsp.h:39
pix_abs16_y2_c
static int pix_abs16_y2_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t stride, int h)
Definition: me_cmp.c:243
sum_abs_dctelem_c
static int sum_abs_dctelem_c(int16_t *block)
Definition: me_cmp.c:136
simple_idct.h
simple idct header.
dct
static void dct(AudioRNNContext *s, float *out, const float *in)
Definition: af_arnndn.c:992
MpegEncContext::dct_unquantize_intra
void(* dct_unquantize_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:533
MECmpContext::quant_psnr
me_cmp_func quant_psnr[6]
Definition: me_cmp.h:60
MECmpContext::w97
me_cmp_func w97[6]
Definition: me_cmp.h:67
LOCAL_ALIGNED_16
#define LOCAL_ALIGNED_16(t, v,...)
Definition: internal.h:131
ff_dsputil_init_dwt
void ff_dsputil_init_dwt(MECmpContext *c)
Definition: snow_dwt.c:842
bit8x8_c
static int bit8x8_c(MpegEncContext *s, uint8_t *src1, uint8_t *src2, ptrdiff_t stride, int h)
Definition: me_cmp.c:843
hadamard8_diff8x8_c
static int hadamard8_diff8x8_c(MpegEncContext *s, uint8_t *dst, uint8_t *src, ptrdiff_t stride, int h)
Definition: me_cmp.c:554
stride
#define stride
ff_me_cmp_init_x86
void ff_me_cmp_init_x86(MECmpContext *c, AVCodecContext *avctx)
VSAD_INTRA
#define VSAD_INTRA(size)
Definition: me_cmp.c:904
ff_check_alignment
int ff_check_alignment(void)
Definition: me_cmp.c:1014
pix_median_abs8_c
static int pix_median_abs8_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t stride, int h)
Definition: me_cmp.c:323
SRC
#define SRC(x, y)
Definition: h264pred_template.c:847
Generated on Tue May 26 2020 19:21:39 for FFmpeg by   doxygen 1.8.11