git.sesse.net Git - ffmpeg/blob - tests/checkasm/h264dsp.c

   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
 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
 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
 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
 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
 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
 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
 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 }