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