1 /*
2 * Copyright (c) 2016 Martin Storsjo
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19 */
20
21 #include <string.h>
22 #include "checkasm.h"
23 #include "libavcodec/avcodec.h"
24 #include "libavcodec/h264dsp.h"
25 #include "libavcodec/h264data.h"
26 #include "libavutil/common.h"
27 #include "libavutil/internal.h"
28 #include "libavutil/intreadwrite.h"
29 #include "libavutil/mem_internal.h"
30
31 static const uint32_t pixel_mask[3] = { 0xffffffff, 0x01ff01ff, 0x03ff03ff };
32 static const uint32_t pixel_mask_lf[3] = { 0xff0fff0f, 0x01ff000f, 0x03ff000f };
33
34 #define SIZEOF_PIXEL ((bit_depth + 7) / 8)
35 #define SIZEOF_COEF (2 * ((bit_depth + 7) / 8))
36 #define PIXEL_STRIDE 16
37
38 #define randomize_buffers() \
39 do { \
40 int x, y; \
41 uint32_t mask = pixel_mask[bit_depth - 8]; \
42 for (y = 0; y < sz; y++) { \
43 for (x = 0; x < PIXEL_STRIDE; x += 4) { \
44 AV_WN32A(src + y * PIXEL_STRIDE + x, rnd() & mask); \
45 AV_WN32A(dst + y * PIXEL_STRIDE + x, rnd() & mask); \
46 } \
47 for (x = 0; x < sz; x++) { \
48 if (bit_depth == 8) { \
49 coef[y * sz + x] = src[y * PIXEL_STRIDE + x] - \
50 dst[y * PIXEL_STRIDE + x]; \
51 } else { \
52 ((int32_t *)coef)[y * sz + x] = \
53 ((uint16_t *)src)[y * (PIXEL_STRIDE/2) + x] - \
54 ((uint16_t *)dst)[y * (PIXEL_STRIDE/2) + x]; \
55 } \
56 } \
57 } \
58 } while (0)
59
60 #define dct4x4_impl(size, dctcoef) \
61 static void dct4x4_##size(dctcoef *coef) \
62 { \
63 int i, y, x; \
64 dctcoef tmp[16]; \
65 for (i = 0; i < 4; i++) { \
66 const int z0 = coef[i*4 + 0] + coef[i*4 + 3]; \
67 const int z1 = coef[i*4 + 1] + coef[i*4 + 2]; \
68 const int z2 = coef[i*4 + 0] - coef[i*4 + 3]; \
69 const int z3 = coef[i*4 + 1] - coef[i*4 + 2]; \
70 tmp[i + 4*0] = z0 + z1; \
71 tmp[i + 4*1] = 2*z2 + z3; \
72 tmp[i + 4*2] = z0 - z1; \
73 tmp[i + 4*3] = z2 - 2*z3; \
74 } \
75 for (i = 0; i < 4; i++) { \
76 const int z0 = tmp[i*4 + 0] + tmp[i*4 + 3]; \
77 const int z1 = tmp[i*4 + 1] + tmp[i*4 + 2]; \
78 const int z2 = tmp[i*4 + 0] - tmp[i*4 + 3]; \
79 const int z3 = tmp[i*4 + 1] - tmp[i*4 + 2]; \
80 coef[i*4 + 0] = z0 + z1; \
81 coef[i*4 + 1] = 2*z2 + z3; \
82 coef[i*4 + 2] = z0 - z1; \
83 coef[i*4 + 3] = z2 - 2*z3; \
84 } \
85 for (y = 0; y < 4; y++) { \
86 for (x = 0; x < 4; x++) { \
87 static const int scale[] = { 13107 * 10, 8066 * 13, 5243 * 16 }; \
88 const int idx = (y & 1) + (x & 1); \
89 coef[y*4 + x] = (coef[y*4 + x] * scale[idx] + (1 << 14)) >> 15; \
90 } \
91 } \
92 }
93
94 #define DCT8_1D(src, srcstride, dst, dststride) do { \
95 const int a0 = (src)[srcstride * 0] + (src)[srcstride * 7]; \
96 const int a1 = (src)[srcstride * 0] - (src)[srcstride * 7]; \
97 const int a2 = (src)[srcstride * 1] + (src)[srcstride * 6]; \
98 const int a3 = (src)[srcstride * 1] - (src)[srcstride * 6]; \
99 const int a4 = (src)[srcstride * 2] + (src)[srcstride * 5]; \
100 const int a5 = (src)[srcstride * 2] - (src)[srcstride * 5]; \
101 const int a6 = (src)[srcstride * 3] + (src)[srcstride * 4]; \
102 const int a7 = (src)[srcstride * 3] - (src)[srcstride * 4]; \
103 const int b0 = a0 + a6; \
104 const int b1 = a2 + a4; \
105 const int b2 = a0 - a6; \
106 const int b3 = a2 - a4; \
107 const int b4 = a3 + a5 + (a1 + (a1 >> 1)); \
108 const int b5 = a1 - a7 - (a5 + (a5 >> 1)); \
109 const int b6 = a1 + a7 - (a3 + (a3 >> 1)); \
110 const int b7 = a3 - a5 + (a7 + (a7 >> 1)); \
111 (dst)[dststride * 0] = b0 + b1; \
112 (dst)[dststride * 1] = b4 + (b7 >> 2); \
113 (dst)[dststride * 2] = b2 + (b3 >> 1); \
114 (dst)[dststride * 3] = b5 + (b6 >> 2); \
115 (dst)[dststride * 4] = b0 - b1; \
116 (dst)[dststride * 5] = b6 - (b5 >> 2); \
117 (dst)[dststride * 6] = (b2 >> 1) - b3; \
118 (dst)[dststride * 7] = (b4 >> 2) - b7; \
119 } while (0)
120
121 #define dct8x8_impl(size, dctcoef) \
122 static void dct8x8_##size(dctcoef *coef) \
123 { \
124 int i, x, y; \
125 dctcoef tmp[64]; \
126 for (i = 0; i < 8; i++) \
127 DCT8_1D(coef + i, 8, tmp + i, 8); \
128 \
129 for (i = 0; i < 8; i++) \
130 DCT8_1D(tmp + 8*i, 1, coef + i, 8); \
131 \
132 for (y = 0; y < 8; y++) { \
133 for (x = 0; x < 8; x++) { \
134 static const int scale[] = { \
135 13107 * 20, 11428 * 18, 20972 * 32, \
136 12222 * 19, 16777 * 25, 15481 * 24, \
137 }; \
138 static const int idxmap[] = { \
139 0, 3, 4, 3, \
140 3, 1, 5, 1, \
141 4, 5, 2, 5, \
142 3, 1, 5, 1, \
143 }; \
144 const int idx = idxmap[(y & 3) * 4 + (x & 3)]; \
145 coef[y*8 + x] = ((int64_t)coef[y*8 + x] * \
146 scale[idx] + (1 << 17)) >> 18; \
147 } \
148 } \
149 }
150
151 dct4x4_impl(16, int16_t)
152 dct4x4_impl(32, int32_t)
153
154 dct8x8_impl(16, int16_t)
155 dct8x8_impl(32, int32_t)
156
dct4x4(int16_t * coef,int bit_depth)157 static void dct4x4(int16_t *coef, int bit_depth)
158 {
159 if (bit_depth == 8)
160 dct4x4_16(coef);
161 else
162 dct4x4_32((int32_t *) coef);
163 }
164
dct8x8(int16_t * coef,int bit_depth)165 static void dct8x8(int16_t *coef, int bit_depth)
166 {
167 if (bit_depth == 8) {
168 dct8x8_16(coef);
169 } else {
170 dct8x8_32((int32_t *) coef);
171 }
172 }
173
174
check_idct(void)175 static void check_idct(void)
176 {
177 LOCAL_ALIGNED_16(uint8_t, src, [8 * 8 * 2]);
178 LOCAL_ALIGNED_16(uint8_t, dst, [8 * 8 * 2]);
179 LOCAL_ALIGNED_16(uint8_t, dst0, [8 * 8 * 2]);
180 LOCAL_ALIGNED_16(uint8_t, dst1_base, [8 * 8 * 2 + 32]);
181 LOCAL_ALIGNED_16(int16_t, coef, [8 * 8 * 2]);
182 LOCAL_ALIGNED_16(int16_t, subcoef0, [8 * 8 * 2]);
183 LOCAL_ALIGNED_16(int16_t, subcoef1, [8 * 8 * 2]);
184 H264DSPContext h;
185 int bit_depth, sz, align, dc;
186 declare_func_emms(AV_CPU_FLAG_MMX, void, uint8_t *dst, int16_t *block, int stride);
187
188 for (bit_depth = 8; bit_depth <= 10; bit_depth++) {
189 ff_h264dsp_init(&h, bit_depth, 1);
190 for (sz = 4; sz <= 8; sz += 4) {
191 randomize_buffers();
192
193 if (sz == 4)
194 dct4x4(coef, bit_depth);
195 else
196 dct8x8(coef, bit_depth);
197
198 for (dc = 0; dc <= 1; dc++) {
199 void (*idct)(uint8_t *, int16_t *, int) = NULL;
200 switch ((sz << 1) | dc) {
201 case (4 << 1) | 0: idct = h.h264_idct_add; break;
202 case (4 << 1) | 1: idct = h.h264_idct_dc_add; break;
203 case (8 << 1) | 0: idct = h.h264_idct8_add; break;
204 case (8 << 1) | 1: idct = h.h264_idct8_dc_add; break;
205 }
206 if (check_func(idct, "h264_idct%d_add%s_%dbpp", sz, dc ? "_dc" : "", bit_depth)) {
207 for (align = 0; align < 16; align += sz * SIZEOF_PIXEL) {
208 uint8_t *dst1 = dst1_base + align;
209 if (dc) {
210 memset(subcoef0, 0, sz * sz * SIZEOF_COEF);
211 memcpy(subcoef0, coef, SIZEOF_COEF);
212 } else {
213 memcpy(subcoef0, coef, sz * sz * SIZEOF_COEF);
214 }
215 memcpy(dst0, dst, sz * PIXEL_STRIDE);
216 memcpy(dst1, dst, sz * PIXEL_STRIDE);
217 memcpy(subcoef1, subcoef0, sz * sz * SIZEOF_COEF);
218 call_ref(dst0, subcoef0, PIXEL_STRIDE);
219 call_new(dst1, subcoef1, PIXEL_STRIDE);
220 if (memcmp(dst0, dst1, sz * PIXEL_STRIDE) ||
221 memcmp(subcoef0, subcoef1, sz * sz * SIZEOF_COEF))
222 fail();
223 bench_new(dst1, subcoef1, sz * SIZEOF_PIXEL);
224 }
225 }
226 }
227 }
228 }
229 }
230
check_idct_multiple(void)231 static void check_idct_multiple(void)
232 {
233 LOCAL_ALIGNED_16(uint8_t, dst_full, [16 * 16 * 2]);
234 LOCAL_ALIGNED_16(int16_t, coef_full, [16 * 16 * 2]);
235 LOCAL_ALIGNED_16(uint8_t, dst0, [16 * 16 * 2]);
236 LOCAL_ALIGNED_16(uint8_t, dst1, [16 * 16 * 2]);
237 LOCAL_ALIGNED_16(int16_t, coef0, [16 * 16 * 2]);
238 LOCAL_ALIGNED_16(int16_t, coef1, [16 * 16 * 2]);
239 LOCAL_ALIGNED_16(uint8_t, nnzc, [15 * 8]);
240 H264DSPContext h;
241 int bit_depth, i, y, func;
242 declare_func_emms(AV_CPU_FLAG_MMX, void, uint8_t *dst, const int *block_offset, int16_t *block, int stride, const uint8_t nnzc[15*8]);
243
244 for (bit_depth = 8; bit_depth <= 10; bit_depth++) {
245 ff_h264dsp_init(&h, bit_depth, 1);
246 for (func = 0; func < 3; func++) {
247 void (*idct)(uint8_t *, const int *, int16_t *, int, const uint8_t[]) = NULL;
248 const char *name;
249 int sz = 4, intra = 0;
250 int block_offset[16] = { 0 };
251 switch (func) {
252 case 0:
253 idct = h.h264_idct_add16;
254 name = "h264_idct_add16";
255 break;
256 case 1:
257 idct = h.h264_idct_add16intra;
258 name = "h264_idct_add16intra";
259 intra = 1;
260 break;
261 case 2:
262 idct = h.h264_idct8_add4;
263 name = "h264_idct8_add4";
264 sz = 8;
265 break;
266 }
267 memset(nnzc, 0, 15 * 8);
268 memset(coef_full, 0, 16 * 16 * SIZEOF_COEF);
269 for (i = 0; i < 16 * 16; i += sz * sz) {
270 uint8_t src[8 * 8 * 2];
271 uint8_t dst[8 * 8 * 2];
272 int16_t coef[8 * 8 * 2];
273 int index = i / sz;
274 int block_y = (index / 16) * sz;
275 int block_x = index % 16;
276 int offset = (block_y * 16 + block_x) * SIZEOF_PIXEL;
277 int nnz = rnd() % 3;
278
279 randomize_buffers();
280 if (sz == 4)
281 dct4x4(coef, bit_depth);
282 else
283 dct8x8(coef, bit_depth);
284
285 for (y = 0; y < sz; y++)
286 memcpy(&dst_full[offset + y * 16 * SIZEOF_PIXEL],
287 &dst[PIXEL_STRIDE * y], sz * SIZEOF_PIXEL);
288
289 if (nnz > 1)
290 nnz = sz * sz;
291 memcpy(&coef_full[i * SIZEOF_COEF/sizeof(coef[0])],
292 coef, nnz * SIZEOF_COEF);
293
294 if (intra && nnz == 1)
295 nnz = 0;
296
297 nnzc[scan8[i / 16]] = nnz;
298 block_offset[i / 16] = offset;
299 }
300
301 if (check_func(idct, "%s_%dbpp", name, bit_depth)) {
302 memcpy(coef0, coef_full, 16 * 16 * SIZEOF_COEF);
303 memcpy(coef1, coef_full, 16 * 16 * SIZEOF_COEF);
304 memcpy(dst0, dst_full, 16 * 16 * SIZEOF_PIXEL);
305 memcpy(dst1, dst_full, 16 * 16 * SIZEOF_PIXEL);
306 call_ref(dst0, block_offset, coef0, 16 * SIZEOF_PIXEL, nnzc);
307 call_new(dst1, block_offset, coef1, 16 * SIZEOF_PIXEL, nnzc);
308 if (memcmp(dst0, dst1, 16 * 16 * SIZEOF_PIXEL) ||
309 memcmp(coef0, coef1, 16 * 16 * SIZEOF_COEF))
310 fail();
311 bench_new(dst1, block_offset, coef1, 16 * SIZEOF_PIXEL, nnzc);
312 }
313 }
314 }
315 }
316
317
check_loop_filter(void)318 static void check_loop_filter(void)
319 {
320 LOCAL_ALIGNED_16(uint8_t, dst, [32 * 16 * 2]);
321 LOCAL_ALIGNED_16(uint8_t, dst0, [32 * 16 * 2]);
322 LOCAL_ALIGNED_16(uint8_t, dst1, [32 * 16 * 2]);
323 H264DSPContext h;
324 int bit_depth;
325 int alphas[36], betas[36];
326 int8_t tc0[36][4];
327
328 declare_func_emms(AV_CPU_FLAG_MMX, void, uint8_t *pix, ptrdiff_t stride,
329 int alpha, int beta, int8_t *tc0);
330
331 for (bit_depth = 8; bit_depth <= 10; bit_depth++) {
332 int i, j, a, c;
333 uint32_t mask = pixel_mask_lf[bit_depth - 8];
334 ff_h264dsp_init(&h, bit_depth, 1);
335 for (i = 35, a = 255, c = 250; i >= 0; i--) {
336 alphas[i] = a << (bit_depth - 8);
337 betas[i] = (i + 1) / 2 << (bit_depth - 8);
338 tc0[i][0] = tc0[i][3] = (c + 6) / 10;
339 tc0[i][1] = (c + 7) / 15;
340 tc0[i][2] = (c + 9) / 20;
341 a = a*9/10;
342 c = c*9/10;
343 }
344
345 #define CHECK_LOOP_FILTER(name, align, idc) \
346 do { \
347 if (check_func(h.name, #name #idc "_%dbpp", bit_depth)) { \
348 for (j = 0; j < 36; j++) { \
349 intptr_t off = 8 * 32 + (j & 15) * 4 * !align; \
350 for (i = 0; i < 1024; i+=4) { \
351 AV_WN32A(dst + i, rnd() & mask); \
352 } \
353 memcpy(dst0, dst, 32 * 16 * 2); \
354 memcpy(dst1, dst, 32 * 16 * 2); \
355 \
356 call_ref(dst0 + off, 32, alphas[j], betas[j], tc0[j]); \
357 call_new(dst1 + off, 32, alphas[j], betas[j], tc0[j]); \
358 if (memcmp(dst0, dst1, 32 * 16 * SIZEOF_PIXEL)) { \
359 fprintf(stderr, #name #idc ": j:%d, alpha:%d beta:%d " \
360 "tc0:{%d,%d,%d,%d}\n", j, alphas[j], betas[j], \
361 tc0[j][0], tc0[j][1], tc0[j][2], tc0[j][3]); \
362 fail(); \
363 } \
364 bench_new(dst1, 32, alphas[j], betas[j], tc0[j]); \
365 } \
366 } \
367 } while (0)
368
369 CHECK_LOOP_FILTER(h264_v_loop_filter_luma, 1,);
370 CHECK_LOOP_FILTER(h264_h_loop_filter_luma, 0,);
371 CHECK_LOOP_FILTER(h264_h_loop_filter_luma_mbaff, 0,);
372 CHECK_LOOP_FILTER(h264_v_loop_filter_chroma, 1,);
373 CHECK_LOOP_FILTER(h264_h_loop_filter_chroma, 0,);
374 CHECK_LOOP_FILTER(h264_h_loop_filter_chroma_mbaff, 0,);
375
376 ff_h264dsp_init(&h, bit_depth, 2);
377 CHECK_LOOP_FILTER(h264_h_loop_filter_chroma, 0, 422);
378 CHECK_LOOP_FILTER(h264_h_loop_filter_chroma_mbaff, 0, 422);
379 #undef CHECK_LOOP_FILTER
380 }
381 }
382
check_loop_filter_intra(void)383 static void check_loop_filter_intra(void)
384 {
385 LOCAL_ALIGNED_16(uint8_t, dst, [32 * 16 * 2]);
386 LOCAL_ALIGNED_16(uint8_t, dst0, [32 * 16 * 2]);
387 LOCAL_ALIGNED_16(uint8_t, dst1, [32 * 16 * 2]);
388 H264DSPContext h;
389 int bit_depth;
390 int alphas[36], betas[36];
391
392 declare_func_emms(AV_CPU_FLAG_MMX, void, uint8_t *pix, ptrdiff_t stride,
393 int alpha, int beta);
394
395 for (bit_depth = 8; bit_depth <= 10; bit_depth++) {
396 int i, j, a;
397 uint32_t mask = pixel_mask_lf[bit_depth - 8];
398 ff_h264dsp_init(&h, bit_depth, 1);
399 for (i = 35, a = 255; i >= 0; i--) {
400 alphas[i] = a << (bit_depth - 8);
401 betas[i] = (i + 1) / 2 << (bit_depth - 8);
402 a = a*9/10;
403 }
404
405 #define CHECK_LOOP_FILTER(name, align, idc) \
406 do { \
407 if (check_func(h.name, #name #idc "_%dbpp", bit_depth)) { \
408 for (j = 0; j < 36; j++) { \
409 intptr_t off = 8 * 32 + (j & 15) * 4 * !align; \
410 for (i = 0; i < 1024; i+=4) { \
411 AV_WN32A(dst + i, rnd() & mask); \
412 } \
413 memcpy(dst0, dst, 32 * 16 * 2); \
414 memcpy(dst1, dst, 32 * 16 * 2); \
415 \
416 call_ref(dst0 + off, 32, alphas[j], betas[j]); \
417 call_new(dst1 + off, 32, alphas[j], betas[j]); \
418 if (memcmp(dst0, dst1, 32 * 16 * SIZEOF_PIXEL)) { \
419 fprintf(stderr, #name #idc ": j:%d, alpha:%d beta:%d\n", \
420 j, alphas[j], betas[j]); \
421 fail(); \
422 } \
423 bench_new(dst1, 32, alphas[j], betas[j]); \
424 } \
425 } \
426 } while (0)
427
428 CHECK_LOOP_FILTER(h264_v_loop_filter_luma_intra, 1,);
429 CHECK_LOOP_FILTER(h264_h_loop_filter_luma_intra, 0,);
430 CHECK_LOOP_FILTER(h264_h_loop_filter_luma_mbaff_intra, 0,);
431 CHECK_LOOP_FILTER(h264_v_loop_filter_chroma_intra, 1,);
432 CHECK_LOOP_FILTER(h264_h_loop_filter_chroma_intra, 0,);
433 CHECK_LOOP_FILTER(h264_h_loop_filter_chroma_mbaff_intra, 0,);
434
435 ff_h264dsp_init(&h, bit_depth, 2);
436 CHECK_LOOP_FILTER(h264_h_loop_filter_chroma_intra, 0, 422);
437 CHECK_LOOP_FILTER(h264_h_loop_filter_chroma_mbaff_intra, 0, 422);
438 #undef CHECK_LOOP_FILTER
439 }
440 }
441
checkasm_check_h264dsp(void)442 void checkasm_check_h264dsp(void)
443 {
444 check_idct();
445 check_idct_multiple();
446 report("idct");
447
448 check_loop_filter();
449 report("loop_filter");
450
451 check_loop_filter_intra();
452 report("loop_filter_intra");
453 }
454