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comparison: media/libvpx/vp8/encoder/quantize.c
media/libvpx/vp8/encoder/quantize.c
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| -1:000000000000 | 0:d87af6c3ba88 |
|---|---|
| 1 /* | |
| 2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license | |
| 5 * that can be found in the LICENSE file in the root of the source | |
| 6 * tree. An additional intellectual property rights grant can be found | |
| 7 * in the file PATENTS. All contributing project authors may | |
| 8 * be found in the AUTHORS file in the root of the source tree. | |
| 9 */ | |
| 10 | |
| 11 | |
| 12 #include <math.h> | |
| 13 #include "vpx_mem/vpx_mem.h" | |
| 14 | |
| 15 #include "onyx_int.h" | |
| 16 #include "quantize.h" | |
| 17 #include "vp8/common/quant_common.h" | |
| 18 | |
| 19 #define EXACT_QUANT | |
| 20 | |
| 21 #ifdef EXACT_FASTQUANT | |
| 22 void vp8_fast_quantize_b_c(BLOCK *b, BLOCKD *d) | |
| 23 { | |
| 24 int i, rc, eob; | |
| 25 int zbin; | |
| 26 int x, y, z, sz; | |
| 27 short *coeff_ptr = b->coeff; | |
| 28 short *zbin_ptr = b->zbin; | |
| 29 short *round_ptr = b->round; | |
| 30 short *quant_ptr = b->quant_fast; | |
| 31 unsigned char *quant_shift_ptr = b->quant_shift; | |
| 32 short *qcoeff_ptr = d->qcoeff; | |
| 33 short *dqcoeff_ptr = d->dqcoeff; | |
| 34 short *dequant_ptr = d->dequant; | |
| 35 | |
| 36 vpx_memset(qcoeff_ptr, 0, 32); | |
| 37 vpx_memset(dqcoeff_ptr, 0, 32); | |
| 38 | |
| 39 eob = -1; | |
| 40 | |
| 41 for (i = 0; i < 16; i++) | |
| 42 { | |
| 43 rc = vp8_default_zig_zag1d[i]; | |
| 44 z = coeff_ptr[rc]; | |
| 45 zbin = zbin_ptr[rc] ; | |
| 46 | |
| 47 sz = (z >> 31); /* sign of z */ | |
| 48 x = (z ^ sz) - sz; /* x = abs(z) */ | |
| 49 | |
| 50 if (x >= zbin) | |
| 51 { | |
| 52 x += round_ptr[rc]; | |
| 53 y = ((((x * quant_ptr[rc]) >> 16) + x) | |
| 54 * quant_shift_ptr[rc]) >> 16; /* quantize (x) */ | |
| 55 x = (y ^ sz) - sz; /* get the sign back */ | |
| 56 qcoeff_ptr[rc] = x; /* write to destination */ | |
| 57 dqcoeff_ptr[rc] = x * dequant_ptr[rc]; /* dequantized value */ | |
| 58 | |
| 59 if (y) | |
| 60 { | |
| 61 eob = i; /* last nonzero coeffs */ | |
| 62 } | |
| 63 } | |
| 64 } | |
| 65 *d->eob = (char)(eob + 1); | |
| 66 } | |
| 67 | |
| 68 #else | |
| 69 | |
| 70 void vp8_fast_quantize_b_c(BLOCK *b, BLOCKD *d) | |
| 71 { | |
| 72 int i, rc, eob; | |
| 73 int x, y, z, sz; | |
| 74 short *coeff_ptr = b->coeff; | |
| 75 short *round_ptr = b->round; | |
| 76 short *quant_ptr = b->quant_fast; | |
| 77 short *qcoeff_ptr = d->qcoeff; | |
| 78 short *dqcoeff_ptr = d->dqcoeff; | |
| 79 short *dequant_ptr = d->dequant; | |
| 80 | |
| 81 eob = -1; | |
| 82 for (i = 0; i < 16; i++) | |
| 83 { | |
| 84 rc = vp8_default_zig_zag1d[i]; | |
| 85 z = coeff_ptr[rc]; | |
| 86 | |
| 87 sz = (z >> 31); /* sign of z */ | |
| 88 x = (z ^ sz) - sz; /* x = abs(z) */ | |
| 89 | |
| 90 y = ((x + round_ptr[rc]) * quant_ptr[rc]) >> 16; /* quantize (x) */ | |
| 91 x = (y ^ sz) - sz; /* get the sign back */ | |
| 92 qcoeff_ptr[rc] = x; /* write to destination */ | |
| 93 dqcoeff_ptr[rc] = x * dequant_ptr[rc]; /* dequantized value */ | |
| 94 | |
| 95 if (y) | |
| 96 { | |
| 97 eob = i; /* last nonzero coeffs */ | |
| 98 } | |
| 99 } | |
| 100 *d->eob = (char)(eob + 1); | |
| 101 } | |
| 102 | |
| 103 #endif | |
| 104 | |
| 105 #ifdef EXACT_QUANT | |
| 106 void vp8_regular_quantize_b_c(BLOCK *b, BLOCKD *d) | |
| 107 { | |
| 108 int i, rc, eob; | |
| 109 int zbin; | |
| 110 int x, y, z, sz; | |
| 111 short *zbin_boost_ptr = b->zrun_zbin_boost; | |
| 112 short *coeff_ptr = b->coeff; | |
| 113 short *zbin_ptr = b->zbin; | |
| 114 short *round_ptr = b->round; | |
| 115 short *quant_ptr = b->quant; | |
| 116 short *quant_shift_ptr = b->quant_shift; | |
| 117 short *qcoeff_ptr = d->qcoeff; | |
| 118 short *dqcoeff_ptr = d->dqcoeff; | |
| 119 short *dequant_ptr = d->dequant; | |
| 120 short zbin_oq_value = b->zbin_extra; | |
| 121 | |
| 122 vpx_memset(qcoeff_ptr, 0, 32); | |
| 123 vpx_memset(dqcoeff_ptr, 0, 32); | |
| 124 | |
| 125 eob = -1; | |
| 126 | |
| 127 for (i = 0; i < 16; i++) | |
| 128 { | |
| 129 rc = vp8_default_zig_zag1d[i]; | |
| 130 z = coeff_ptr[rc]; | |
| 131 | |
| 132 zbin = zbin_ptr[rc] + *zbin_boost_ptr + zbin_oq_value; | |
| 133 | |
| 134 zbin_boost_ptr ++; | |
| 135 sz = (z >> 31); /* sign of z */ | |
| 136 x = (z ^ sz) - sz; /* x = abs(z) */ | |
| 137 | |
| 138 if (x >= zbin) | |
| 139 { | |
| 140 x += round_ptr[rc]; | |
| 141 y = ((((x * quant_ptr[rc]) >> 16) + x) | |
| 142 * quant_shift_ptr[rc]) >> 16; /* quantize (x) */ | |
| 143 x = (y ^ sz) - sz; /* get the sign back */ | |
| 144 qcoeff_ptr[rc] = x; /* write to destination */ | |
| 145 dqcoeff_ptr[rc] = x * dequant_ptr[rc]; /* dequantized value */ | |
| 146 | |
| 147 if (y) | |
| 148 { | |
| 149 eob = i; /* last nonzero coeffs */ | |
| 150 zbin_boost_ptr = b->zrun_zbin_boost; /* reset zero runlength */ | |
| 151 } | |
| 152 } | |
| 153 } | |
| 154 | |
| 155 *d->eob = (char)(eob + 1); | |
| 156 } | |
| 157 | |
| 158 /* Perform regular quantization, with unbiased rounding and no zero bin. */ | |
| 159 void vp8_strict_quantize_b_c(BLOCK *b, BLOCKD *d) | |
| 160 { | |
| 161 int i; | |
| 162 int rc; | |
| 163 int eob; | |
| 164 int x; | |
| 165 int y; | |
| 166 int z; | |
| 167 int sz; | |
| 168 short *coeff_ptr; | |
| 169 short *quant_ptr; | |
| 170 short *quant_shift_ptr; | |
| 171 short *qcoeff_ptr; | |
| 172 short *dqcoeff_ptr; | |
| 173 short *dequant_ptr; | |
| 174 | |
| 175 coeff_ptr = b->coeff; | |
| 176 quant_ptr = b->quant; | |
| 177 quant_shift_ptr = b->quant_shift; | |
| 178 qcoeff_ptr = d->qcoeff; | |
| 179 dqcoeff_ptr = d->dqcoeff; | |
| 180 dequant_ptr = d->dequant; | |
| 181 eob = - 1; | |
| 182 vpx_memset(qcoeff_ptr, 0, 32); | |
| 183 vpx_memset(dqcoeff_ptr, 0, 32); | |
| 184 for (i = 0; i < 16; i++) | |
| 185 { | |
| 186 int dq; | |
| 187 int rounding; | |
| 188 | |
| 189 /*TODO: These arrays should be stored in zig-zag order.*/ | |
| 190 rc = vp8_default_zig_zag1d[i]; | |
| 191 z = coeff_ptr[rc]; | |
| 192 dq = dequant_ptr[rc]; | |
| 193 rounding = dq >> 1; | |
| 194 /* Sign of z. */ | |
| 195 sz = -(z < 0); | |
| 196 x = (z + sz) ^ sz; | |
| 197 x += rounding; | |
| 198 if (x >= dq) | |
| 199 { | |
| 200 /* Quantize x. */ | |
| 201 y = ((((x * quant_ptr[rc]) >> 16) + x) * quant_shift_ptr[rc]) >> 16; | |
| 202 /* Put the sign back. */ | |
| 203 x = (y + sz) ^ sz; | |
| 204 /* Save the coefficient and its dequantized value. */ | |
| 205 qcoeff_ptr[rc] = x; | |
| 206 dqcoeff_ptr[rc] = x * dq; | |
| 207 /* Remember the last non-zero coefficient. */ | |
| 208 if (y) | |
| 209 eob = i; | |
| 210 } | |
| 211 } | |
| 212 | |
| 213 *d->eob = (char)(eob + 1); | |
| 214 } | |
| 215 | |
| 216 #else | |
| 217 | |
| 218 void vp8_regular_quantize_b_c(BLOCK *b, BLOCKD *d) | |
| 219 { | |
| 220 int i, rc, eob; | |
| 221 int zbin; | |
| 222 int x, y, z, sz; | |
| 223 short *zbin_boost_ptr = b->zrun_zbin_boost; | |
| 224 short *coeff_ptr = b->coeff; | |
| 225 short *zbin_ptr = b->zbin; | |
| 226 short *round_ptr = b->round; | |
| 227 short *quant_ptr = b->quant; | |
| 228 short *qcoeff_ptr = d->qcoeff; | |
| 229 short *dqcoeff_ptr = d->dqcoeff; | |
| 230 short *dequant_ptr = d->dequant; | |
| 231 short zbin_oq_value = b->zbin_extra; | |
| 232 | |
| 233 vpx_memset(qcoeff_ptr, 0, 32); | |
| 234 vpx_memset(dqcoeff_ptr, 0, 32); | |
| 235 | |
| 236 eob = -1; | |
| 237 | |
| 238 for (i = 0; i < 16; i++) | |
| 239 { | |
| 240 rc = vp8_default_zig_zag1d[i]; | |
| 241 z = coeff_ptr[rc]; | |
| 242 | |
| 243 zbin = zbin_ptr[rc] + *zbin_boost_ptr + zbin_oq_value; | |
| 244 | |
| 245 zbin_boost_ptr ++; | |
| 246 sz = (z >> 31); /* sign of z */ | |
| 247 x = (z ^ sz) - sz; /* x = abs(z) */ | |
| 248 | |
| 249 if (x >= zbin) | |
| 250 { | |
| 251 y = ((x + round_ptr[rc]) * quant_ptr[rc]) >> 16; /* quantize (x) */ | |
| 252 x = (y ^ sz) - sz; /* get the sign back */ | |
| 253 qcoeff_ptr[rc] = x; /* write to destination */ | |
| 254 dqcoeff_ptr[rc] = x * dequant_ptr[rc]; /* dequantized value */ | |
| 255 | |
| 256 if (y) | |
| 257 { | |
| 258 eob = i; /* last nonzero coeffs */ | |
| 259 zbin_boost_ptr = &b->zrun_zbin_boost[0]; /* reset zrl */ | |
| 260 } | |
| 261 } | |
| 262 } | |
| 263 | |
| 264 *d->eob = (char)(eob + 1); | |
| 265 } | |
| 266 | |
| 267 #endif | |
| 268 | |
| 269 void vp8_quantize_mby_c(MACROBLOCK *x) | |
| 270 { | |
| 271 int i; | |
| 272 int has_2nd_order = (x->e_mbd.mode_info_context->mbmi.mode != B_PRED | |
| 273 && x->e_mbd.mode_info_context->mbmi.mode != SPLITMV); | |
| 274 | |
| 275 for (i = 0; i < 16; i++) | |
| 276 x->quantize_b(&x->block[i], &x->e_mbd.block[i]); | |
| 277 | |
| 278 if(has_2nd_order) | |
| 279 x->quantize_b(&x->block[24], &x->e_mbd.block[24]); | |
| 280 } | |
| 281 | |
| 282 void vp8_quantize_mb_c(MACROBLOCK *x) | |
| 283 { | |
| 284 int i; | |
| 285 int has_2nd_order=(x->e_mbd.mode_info_context->mbmi.mode != B_PRED | |
| 286 && x->e_mbd.mode_info_context->mbmi.mode != SPLITMV); | |
| 287 | |
| 288 for (i = 0; i < 24+has_2nd_order; i++) | |
| 289 x->quantize_b(&x->block[i], &x->e_mbd.block[i]); | |
| 290 } | |
| 291 | |
| 292 | |
| 293 void vp8_quantize_mbuv_c(MACROBLOCK *x) | |
| 294 { | |
| 295 int i; | |
| 296 | |
| 297 for (i = 16; i < 24; i++) | |
| 298 x->quantize_b(&x->block[i], &x->e_mbd.block[i]); | |
| 299 } | |
| 300 | |
| 301 /* quantize_b_pair function pointer in MACROBLOCK structure is set to one of | |
| 302 * these two C functions if corresponding optimized routine is not available. | |
| 303 * NEON optimized version implements currently the fast quantization for pair | |
| 304 * of blocks. */ | |
| 305 void vp8_regular_quantize_b_pair(BLOCK *b1, BLOCK *b2, BLOCKD *d1, BLOCKD *d2) | |
| 306 { | |
| 307 vp8_regular_quantize_b(b1, d1); | |
| 308 vp8_regular_quantize_b(b2, d2); | |
| 309 } | |
| 310 | |
| 311 void vp8_fast_quantize_b_pair_c(BLOCK *b1, BLOCK *b2, BLOCKD *d1, BLOCKD *d2) | |
| 312 { | |
| 313 vp8_fast_quantize_b_c(b1, d1); | |
| 314 vp8_fast_quantize_b_c(b2, d2); | |
| 315 } | |
| 316 | |
| 317 | |
| 318 static const int qrounding_factors[129] = | |
| 319 { | |
| 320 48, 48, 48, 48, 48, 48, 48, 48, | |
| 321 48, 48, 48, 48, 48, 48, 48, 48, | |
| 322 48, 48, 48, 48, 48, 48, 48, 48, | |
| 323 48, 48, 48, 48, 48, 48, 48, 48, | |
| 324 48, 48, 48, 48, 48, 48, 48, 48, | |
| 325 48, 48, 48, 48, 48, 48, 48, 48, | |
| 326 48, 48, 48, 48, 48, 48, 48, 48, | |
| 327 48, 48, 48, 48, 48, 48, 48, 48, | |
| 328 48, 48, 48, 48, 48, 48, 48, 48, | |
| 329 48, 48, 48, 48, 48, 48, 48, 48, | |
| 330 48, 48, 48, 48, 48, 48, 48, 48, | |
| 331 48, 48, 48, 48, 48, 48, 48, 48, | |
| 332 48, 48, 48, 48, 48, 48, 48, 48, | |
| 333 48, 48, 48, 48, 48, 48, 48, 48, | |
| 334 48, 48, 48, 48, 48, 48, 48, 48, | |
| 335 48, 48, 48, 48, 48, 48, 48, 48, | |
| 336 48 | |
| 337 }; | |
| 338 | |
| 339 | |
| 340 static const int qzbin_factors[129] = | |
| 341 { | |
| 342 84, 84, 84, 84, 84, 84, 84, 84, | |
| 343 84, 84, 84, 84, 84, 84, 84, 84, | |
| 344 84, 84, 84, 84, 84, 84, 84, 84, | |
| 345 84, 84, 84, 84, 84, 84, 84, 84, | |
| 346 84, 84, 84, 84, 84, 84, 84, 84, | |
| 347 84, 84, 84, 84, 84, 84, 84, 84, | |
| 348 80, 80, 80, 80, 80, 80, 80, 80, | |
| 349 80, 80, 80, 80, 80, 80, 80, 80, | |
| 350 80, 80, 80, 80, 80, 80, 80, 80, | |
| 351 80, 80, 80, 80, 80, 80, 80, 80, | |
| 352 80, 80, 80, 80, 80, 80, 80, 80, | |
| 353 80, 80, 80, 80, 80, 80, 80, 80, | |
| 354 80, 80, 80, 80, 80, 80, 80, 80, | |
| 355 80, 80, 80, 80, 80, 80, 80, 80, | |
| 356 80, 80, 80, 80, 80, 80, 80, 80, | |
| 357 80, 80, 80, 80, 80, 80, 80, 80, | |
| 358 80 | |
| 359 }; | |
| 360 | |
| 361 | |
| 362 static const int qrounding_factors_y2[129] = | |
| 363 { | |
| 364 48, 48, 48, 48, 48, 48, 48, 48, | |
| 365 48, 48, 48, 48, 48, 48, 48, 48, | |
| 366 48, 48, 48, 48, 48, 48, 48, 48, | |
| 367 48, 48, 48, 48, 48, 48, 48, 48, | |
| 368 48, 48, 48, 48, 48, 48, 48, 48, | |
| 369 48, 48, 48, 48, 48, 48, 48, 48, | |
| 370 48, 48, 48, 48, 48, 48, 48, 48, | |
| 371 48, 48, 48, 48, 48, 48, 48, 48, | |
| 372 48, 48, 48, 48, 48, 48, 48, 48, | |
| 373 48, 48, 48, 48, 48, 48, 48, 48, | |
| 374 48, 48, 48, 48, 48, 48, 48, 48, | |
| 375 48, 48, 48, 48, 48, 48, 48, 48, | |
| 376 48, 48, 48, 48, 48, 48, 48, 48, | |
| 377 48, 48, 48, 48, 48, 48, 48, 48, | |
| 378 48, 48, 48, 48, 48, 48, 48, 48, | |
| 379 48, 48, 48, 48, 48, 48, 48, 48, | |
| 380 48 | |
| 381 }; | |
| 382 | |
| 383 | |
| 384 static const int qzbin_factors_y2[129] = | |
| 385 { | |
| 386 84, 84, 84, 84, 84, 84, 84, 84, | |
| 387 84, 84, 84, 84, 84, 84, 84, 84, | |
| 388 84, 84, 84, 84, 84, 84, 84, 84, | |
| 389 84, 84, 84, 84, 84, 84, 84, 84, | |
| 390 84, 84, 84, 84, 84, 84, 84, 84, | |
| 391 84, 84, 84, 84, 84, 84, 84, 84, | |
| 392 80, 80, 80, 80, 80, 80, 80, 80, | |
| 393 80, 80, 80, 80, 80, 80, 80, 80, | |
| 394 80, 80, 80, 80, 80, 80, 80, 80, | |
| 395 80, 80, 80, 80, 80, 80, 80, 80, | |
| 396 80, 80, 80, 80, 80, 80, 80, 80, | |
| 397 80, 80, 80, 80, 80, 80, 80, 80, | |
| 398 80, 80, 80, 80, 80, 80, 80, 80, | |
| 399 80, 80, 80, 80, 80, 80, 80, 80, | |
| 400 80, 80, 80, 80, 80, 80, 80, 80, | |
| 401 80, 80, 80, 80, 80, 80, 80, 80, | |
| 402 80 | |
| 403 }; | |
| 404 | |
| 405 | |
| 406 #define EXACT_QUANT | |
| 407 #ifdef EXACT_QUANT | |
| 408 static void invert_quant(int improved_quant, short *quant, | |
| 409 short *shift, short d) | |
| 410 { | |
| 411 if(improved_quant) | |
| 412 { | |
| 413 unsigned t; | |
| 414 int l; | |
| 415 t = d; | |
| 416 for(l = 0; t > 1; l++) | |
| 417 t>>=1; | |
| 418 t = 1 + (1<<(16+l))/d; | |
| 419 *quant = (short)(t - (1<<16)); | |
| 420 *shift = l; | |
| 421 /* use multiplication and constant shift by 16 */ | |
| 422 *shift = 1 << (16 - *shift); | |
| 423 } | |
| 424 else | |
| 425 { | |
| 426 *quant = (1 << 16) / d; | |
| 427 *shift = 0; | |
| 428 /* use multiplication and constant shift by 16 */ | |
| 429 *shift = 1 << (16 - *shift); | |
| 430 } | |
| 431 } | |
| 432 | |
| 433 | |
| 434 void vp8cx_init_quantizer(VP8_COMP *cpi) | |
| 435 { | |
| 436 int i; | |
| 437 int quant_val; | |
| 438 int Q; | |
| 439 | |
| 440 int zbin_boost[16] = {0, 0, 8, 10, 12, 14, 16, 20, 24, 28, 32, 36, 40, 44, | |
| 441 44, 44}; | |
| 442 | |
| 443 for (Q = 0; Q < QINDEX_RANGE; Q++) | |
| 444 { | |
| 445 /* dc values */ | |
| 446 quant_val = vp8_dc_quant(Q, cpi->common.y1dc_delta_q); | |
| 447 cpi->Y1quant_fast[Q][0] = (1 << 16) / quant_val; | |
| 448 invert_quant(cpi->sf.improved_quant, cpi->Y1quant[Q] + 0, | |
| 449 cpi->Y1quant_shift[Q] + 0, quant_val); | |
| 450 cpi->Y1zbin[Q][0] = ((qzbin_factors[Q] * quant_val) + 64) >> 7; | |
| 451 cpi->Y1round[Q][0] = (qrounding_factors[Q] * quant_val) >> 7; | |
| 452 cpi->common.Y1dequant[Q][0] = quant_val; | |
| 453 cpi->zrun_zbin_boost_y1[Q][0] = (quant_val * zbin_boost[0]) >> 7; | |
| 454 | |
| 455 quant_val = vp8_dc2quant(Q, cpi->common.y2dc_delta_q); | |
| 456 cpi->Y2quant_fast[Q][0] = (1 << 16) / quant_val; | |
| 457 invert_quant(cpi->sf.improved_quant, cpi->Y2quant[Q] + 0, | |
| 458 cpi->Y2quant_shift[Q] + 0, quant_val); | |
| 459 cpi->Y2zbin[Q][0] = ((qzbin_factors_y2[Q] * quant_val) + 64) >> 7; | |
| 460 cpi->Y2round[Q][0] = (qrounding_factors_y2[Q] * quant_val) >> 7; | |
| 461 cpi->common.Y2dequant[Q][0] = quant_val; | |
| 462 cpi->zrun_zbin_boost_y2[Q][0] = (quant_val * zbin_boost[0]) >> 7; | |
| 463 | |
| 464 quant_val = vp8_dc_uv_quant(Q, cpi->common.uvdc_delta_q); | |
| 465 cpi->UVquant_fast[Q][0] = (1 << 16) / quant_val; | |
| 466 invert_quant(cpi->sf.improved_quant, cpi->UVquant[Q] + 0, | |
| 467 cpi->UVquant_shift[Q] + 0, quant_val); | |
| 468 cpi->UVzbin[Q][0] = ((qzbin_factors[Q] * quant_val) + 64) >> 7;; | |
| 469 cpi->UVround[Q][0] = (qrounding_factors[Q] * quant_val) >> 7; | |
| 470 cpi->common.UVdequant[Q][0] = quant_val; | |
| 471 cpi->zrun_zbin_boost_uv[Q][0] = (quant_val * zbin_boost[0]) >> 7; | |
| 472 | |
| 473 /* all the ac values = ; */ | |
| 474 quant_val = vp8_ac_yquant(Q); | |
| 475 cpi->Y1quant_fast[Q][1] = (1 << 16) / quant_val; | |
| 476 invert_quant(cpi->sf.improved_quant, cpi->Y1quant[Q] + 1, | |
| 477 cpi->Y1quant_shift[Q] + 1, quant_val); | |
| 478 cpi->Y1zbin[Q][1] = ((qzbin_factors[Q] * quant_val) + 64) >> 7; | |
| 479 cpi->Y1round[Q][1] = (qrounding_factors[Q] * quant_val) >> 7; | |
| 480 cpi->common.Y1dequant[Q][1] = quant_val; | |
| 481 cpi->zrun_zbin_boost_y1[Q][1] = (quant_val * zbin_boost[1]) >> 7; | |
| 482 | |
| 483 quant_val = vp8_ac2quant(Q, cpi->common.y2ac_delta_q); | |
| 484 cpi->Y2quant_fast[Q][1] = (1 << 16) / quant_val; | |
| 485 invert_quant(cpi->sf.improved_quant, cpi->Y2quant[Q] + 1, | |
| 486 cpi->Y2quant_shift[Q] + 1, quant_val); | |
| 487 cpi->Y2zbin[Q][1] = ((qzbin_factors_y2[Q] * quant_val) + 64) >> 7; | |
| 488 cpi->Y2round[Q][1] = (qrounding_factors_y2[Q] * quant_val) >> 7; | |
| 489 cpi->common.Y2dequant[Q][1] = quant_val; | |
| 490 cpi->zrun_zbin_boost_y2[Q][1] = (quant_val * zbin_boost[1]) >> 7; | |
| 491 | |
| 492 quant_val = vp8_ac_uv_quant(Q, cpi->common.uvac_delta_q); | |
| 493 cpi->UVquant_fast[Q][1] = (1 << 16) / quant_val; | |
| 494 invert_quant(cpi->sf.improved_quant, cpi->UVquant[Q] + 1, | |
| 495 cpi->UVquant_shift[Q] + 1, quant_val); | |
| 496 cpi->UVzbin[Q][1] = ((qzbin_factors[Q] * quant_val) + 64) >> 7; | |
| 497 cpi->UVround[Q][1] = (qrounding_factors[Q] * quant_val) >> 7; | |
| 498 cpi->common.UVdequant[Q][1] = quant_val; | |
| 499 cpi->zrun_zbin_boost_uv[Q][1] = (quant_val * zbin_boost[1]) >> 7; | |
| 500 | |
| 501 for (i = 2; i < 16; i++) | |
| 502 { | |
| 503 cpi->Y1quant_fast[Q][i] = cpi->Y1quant_fast[Q][1]; | |
| 504 cpi->Y1quant[Q][i] = cpi->Y1quant[Q][1]; | |
| 505 cpi->Y1quant_shift[Q][i] = cpi->Y1quant_shift[Q][1]; | |
| 506 cpi->Y1zbin[Q][i] = cpi->Y1zbin[Q][1]; | |
| 507 cpi->Y1round[Q][i] = cpi->Y1round[Q][1]; | |
| 508 cpi->zrun_zbin_boost_y1[Q][i] = (cpi->common.Y1dequant[Q][1] * | |
| 509 zbin_boost[i]) >> 7; | |
| 510 | |
| 511 cpi->Y2quant_fast[Q][i] = cpi->Y2quant_fast[Q][1]; | |
| 512 cpi->Y2quant[Q][i] = cpi->Y2quant[Q][1]; | |
| 513 cpi->Y2quant_shift[Q][i] = cpi->Y2quant_shift[Q][1]; | |
| 514 cpi->Y2zbin[Q][i] = cpi->Y2zbin[Q][1]; | |
| 515 cpi->Y2round[Q][i] = cpi->Y2round[Q][1]; | |
| 516 cpi->zrun_zbin_boost_y2[Q][i] = (cpi->common.Y2dequant[Q][1] * | |
| 517 zbin_boost[i]) >> 7; | |
| 518 | |
| 519 cpi->UVquant_fast[Q][i] = cpi->UVquant_fast[Q][1]; | |
| 520 cpi->UVquant[Q][i] = cpi->UVquant[Q][1]; | |
| 521 cpi->UVquant_shift[Q][i] = cpi->UVquant_shift[Q][1]; | |
| 522 cpi->UVzbin[Q][i] = cpi->UVzbin[Q][1]; | |
| 523 cpi->UVround[Q][i] = cpi->UVround[Q][1]; | |
| 524 cpi->zrun_zbin_boost_uv[Q][i] = (cpi->common.UVdequant[Q][1] * | |
| 525 zbin_boost[i]) >> 7; | |
| 526 } | |
| 527 } | |
| 528 } | |
| 529 #else | |
| 530 void vp8cx_init_quantizer(VP8_COMP *cpi) | |
| 531 { | |
| 532 int i; | |
| 533 int quant_val; | |
| 534 int Q; | |
| 535 | |
| 536 int zbin_boost[16] = {0, 0, 8, 10, 12, 14, 16, 20, 24, 28, 32, 36, 40, 44, 44, 44}; | |
| 537 | |
| 538 for (Q = 0; Q < QINDEX_RANGE; Q++) | |
| 539 { | |
| 540 /* dc values */ | |
| 541 quant_val = vp8_dc_quant(Q, cpi->common.y1dc_delta_q); | |
| 542 cpi->Y1quant[Q][0] = (1 << 16) / quant_val; | |
| 543 cpi->Y1zbin[Q][0] = ((qzbin_factors[Q] * quant_val) + 64) >> 7; | |
| 544 cpi->Y1round[Q][0] = (qrounding_factors[Q] * quant_val) >> 7; | |
| 545 cpi->common.Y1dequant[Q][0] = quant_val; | |
| 546 cpi->zrun_zbin_boost_y1[Q][0] = (quant_val * zbin_boost[0]) >> 7; | |
| 547 | |
| 548 quant_val = vp8_dc2quant(Q, cpi->common.y2dc_delta_q); | |
| 549 cpi->Y2quant[Q][0] = (1 << 16) / quant_val; | |
| 550 cpi->Y2zbin[Q][0] = ((qzbin_factors_y2[Q] * quant_val) + 64) >> 7; | |
| 551 cpi->Y2round[Q][0] = (qrounding_factors_y2[Q] * quant_val) >> 7; | |
| 552 cpi->common.Y2dequant[Q][0] = quant_val; | |
| 553 cpi->zrun_zbin_boost_y2[Q][0] = (quant_val * zbin_boost[0]) >> 7; | |
| 554 | |
| 555 quant_val = vp8_dc_uv_quant(Q, cpi->common.uvdc_delta_q); | |
| 556 cpi->UVquant[Q][0] = (1 << 16) / quant_val; | |
| 557 cpi->UVzbin[Q][0] = ((qzbin_factors[Q] * quant_val) + 64) >> 7;; | |
| 558 cpi->UVround[Q][0] = (qrounding_factors[Q] * quant_val) >> 7; | |
| 559 cpi->common.UVdequant[Q][0] = quant_val; | |
| 560 cpi->zrun_zbin_boost_uv[Q][0] = (quant_val * zbin_boost[0]) >> 7; | |
| 561 | |
| 562 /* all the ac values = ; */ | |
| 563 for (i = 1; i < 16; i++) | |
| 564 { | |
| 565 int rc = vp8_default_zig_zag1d[i]; | |
| 566 | |
| 567 quant_val = vp8_ac_yquant(Q); | |
| 568 cpi->Y1quant[Q][rc] = (1 << 16) / quant_val; | |
| 569 cpi->Y1zbin[Q][rc] = ((qzbin_factors[Q] * quant_val) + 64) >> 7; | |
| 570 cpi->Y1round[Q][rc] = (qrounding_factors[Q] * quant_val) >> 7; | |
| 571 cpi->common.Y1dequant[Q][rc] = quant_val; | |
| 572 cpi->zrun_zbin_boost_y1[Q][i] = (quant_val * zbin_boost[i]) >> 7; | |
| 573 | |
| 574 quant_val = vp8_ac2quant(Q, cpi->common.y2ac_delta_q); | |
| 575 cpi->Y2quant[Q][rc] = (1 << 16) / quant_val; | |
| 576 cpi->Y2zbin[Q][rc] = ((qzbin_factors_y2[Q] * quant_val) + 64) >> 7; | |
| 577 cpi->Y2round[Q][rc] = (qrounding_factors_y2[Q] * quant_val) >> 7; | |
| 578 cpi->common.Y2dequant[Q][rc] = quant_val; | |
| 579 cpi->zrun_zbin_boost_y2[Q][i] = (quant_val * zbin_boost[i]) >> 7; | |
| 580 | |
| 581 quant_val = vp8_ac_uv_quant(Q, cpi->common.uvac_delta_q); | |
| 582 cpi->UVquant[Q][rc] = (1 << 16) / quant_val; | |
| 583 cpi->UVzbin[Q][rc] = ((qzbin_factors[Q] * quant_val) + 64) >> 7; | |
| 584 cpi->UVround[Q][rc] = (qrounding_factors[Q] * quant_val) >> 7; | |
| 585 cpi->common.UVdequant[Q][rc] = quant_val; | |
| 586 cpi->zrun_zbin_boost_uv[Q][i] = (quant_val * zbin_boost[i]) >> 7; | |
| 587 } | |
| 588 } | |
| 589 } | |
| 590 #endif | |
| 591 | |
| 592 #define ZBIN_EXTRA_Y \ | |
| 593 (( cpi->common.Y1dequant[QIndex][1] * \ | |
| 594 ( x->zbin_over_quant + \ | |
| 595 x->zbin_mode_boost + \ | |
| 596 x->act_zbin_adj ) ) >> 7) | |
| 597 | |
| 598 #define ZBIN_EXTRA_UV \ | |
| 599 (( cpi->common.UVdequant[QIndex][1] * \ | |
| 600 ( x->zbin_over_quant + \ | |
| 601 x->zbin_mode_boost + \ | |
| 602 x->act_zbin_adj ) ) >> 7) | |
| 603 | |
| 604 #define ZBIN_EXTRA_Y2 \ | |
| 605 (( cpi->common.Y2dequant[QIndex][1] * \ | |
| 606 ( (x->zbin_over_quant / 2) + \ | |
| 607 x->zbin_mode_boost + \ | |
| 608 x->act_zbin_adj ) ) >> 7) | |
| 609 | |
| 610 void vp8cx_mb_init_quantizer(VP8_COMP *cpi, MACROBLOCK *x, int ok_to_skip) | |
| 611 { | |
| 612 int i; | |
| 613 int QIndex; | |
| 614 MACROBLOCKD *xd = &x->e_mbd; | |
| 615 int zbin_extra; | |
| 616 | |
| 617 /* Select the baseline MB Q index. */ | |
| 618 if (xd->segmentation_enabled) | |
| 619 { | |
| 620 /* Abs Value */ | |
| 621 if (xd->mb_segement_abs_delta == SEGMENT_ABSDATA) | |
| 622 QIndex = xd->segment_feature_data[MB_LVL_ALT_Q][xd->mode_info_context->mbmi.segment_id]; | |
| 623 /* Delta Value */ | |
| 624 else | |
| 625 { | |
| 626 QIndex = cpi->common.base_qindex + xd->segment_feature_data[MB_LVL_ALT_Q][xd->mode_info_context->mbmi.segment_id]; | |
| 627 /* Clamp to valid range */ | |
| 628 QIndex = (QIndex >= 0) ? ((QIndex <= MAXQ) ? QIndex : MAXQ) : 0; | |
| 629 } | |
| 630 } | |
| 631 else | |
| 632 QIndex = cpi->common.base_qindex; | |
| 633 | |
| 634 /* This initialization should be called at least once. Use ok_to_skip to | |
| 635 * decide if it is ok to skip. | |
| 636 * Before encoding a frame, this function is always called with ok_to_skip | |
| 637 * =0, which means no skiping of calculations. The "last" values are | |
| 638 * initialized at that time. | |
| 639 */ | |
| 640 if (!ok_to_skip || QIndex != x->q_index) | |
| 641 { | |
| 642 | |
| 643 xd->dequant_y1_dc[0] = 1; | |
| 644 xd->dequant_y1[0] = cpi->common.Y1dequant[QIndex][0]; | |
| 645 xd->dequant_y2[0] = cpi->common.Y2dequant[QIndex][0]; | |
| 646 xd->dequant_uv[0] = cpi->common.UVdequant[QIndex][0]; | |
| 647 | |
| 648 for (i = 1; i < 16; i++) | |
| 649 { | |
| 650 xd->dequant_y1_dc[i] = | |
| 651 xd->dequant_y1[i] = cpi->common.Y1dequant[QIndex][1]; | |
| 652 xd->dequant_y2[i] = cpi->common.Y2dequant[QIndex][1]; | |
| 653 xd->dequant_uv[i] = cpi->common.UVdequant[QIndex][1]; | |
| 654 } | |
| 655 #if 1 | |
| 656 /*TODO: Remove dequant from BLOCKD. This is a temporary solution until | |
| 657 * the quantizer code uses a passed in pointer to the dequant constants. | |
| 658 * This will also require modifications to the x86 and neon assembly. | |
| 659 * */ | |
| 660 for (i = 0; i < 16; i++) | |
| 661 x->e_mbd.block[i].dequant = xd->dequant_y1; | |
| 662 for (i = 16; i < 24; i++) | |
| 663 x->e_mbd.block[i].dequant = xd->dequant_uv; | |
| 664 x->e_mbd.block[24].dequant = xd->dequant_y2; | |
| 665 #endif | |
| 666 | |
| 667 /* Y */ | |
| 668 zbin_extra = ZBIN_EXTRA_Y; | |
| 669 | |
| 670 for (i = 0; i < 16; i++) | |
| 671 { | |
| 672 x->block[i].quant = cpi->Y1quant[QIndex]; | |
| 673 x->block[i].quant_fast = cpi->Y1quant_fast[QIndex]; | |
| 674 x->block[i].quant_shift = cpi->Y1quant_shift[QIndex]; | |
| 675 x->block[i].zbin = cpi->Y1zbin[QIndex]; | |
| 676 x->block[i].round = cpi->Y1round[QIndex]; | |
| 677 x->block[i].zrun_zbin_boost = cpi->zrun_zbin_boost_y1[QIndex]; | |
| 678 x->block[i].zbin_extra = (short)zbin_extra; | |
| 679 } | |
| 680 | |
| 681 /* UV */ | |
| 682 zbin_extra = ZBIN_EXTRA_UV; | |
| 683 | |
| 684 for (i = 16; i < 24; i++) | |
| 685 { | |
| 686 x->block[i].quant = cpi->UVquant[QIndex]; | |
| 687 x->block[i].quant_fast = cpi->UVquant_fast[QIndex]; | |
| 688 x->block[i].quant_shift = cpi->UVquant_shift[QIndex]; | |
| 689 x->block[i].zbin = cpi->UVzbin[QIndex]; | |
| 690 x->block[i].round = cpi->UVround[QIndex]; | |
| 691 x->block[i].zrun_zbin_boost = cpi->zrun_zbin_boost_uv[QIndex]; | |
| 692 x->block[i].zbin_extra = (short)zbin_extra; | |
| 693 } | |
| 694 | |
| 695 /* Y2 */ | |
| 696 zbin_extra = ZBIN_EXTRA_Y2; | |
| 697 | |
| 698 x->block[24].quant_fast = cpi->Y2quant_fast[QIndex]; | |
| 699 x->block[24].quant = cpi->Y2quant[QIndex]; | |
| 700 x->block[24].quant_shift = cpi->Y2quant_shift[QIndex]; | |
| 701 x->block[24].zbin = cpi->Y2zbin[QIndex]; | |
| 702 x->block[24].round = cpi->Y2round[QIndex]; | |
| 703 x->block[24].zrun_zbin_boost = cpi->zrun_zbin_boost_y2[QIndex]; | |
| 704 x->block[24].zbin_extra = (short)zbin_extra; | |
| 705 | |
| 706 /* save this macroblock QIndex for vp8_update_zbin_extra() */ | |
| 707 x->q_index = QIndex; | |
| 708 | |
| 709 x->last_zbin_over_quant = x->zbin_over_quant; | |
| 710 x->last_zbin_mode_boost = x->zbin_mode_boost; | |
| 711 x->last_act_zbin_adj = x->act_zbin_adj; | |
| 712 | |
| 713 | |
| 714 | |
| 715 } | |
| 716 else if(x->last_zbin_over_quant != x->zbin_over_quant | |
| 717 || x->last_zbin_mode_boost != x->zbin_mode_boost | |
| 718 || x->last_act_zbin_adj != x->act_zbin_adj) | |
| 719 { | |
| 720 /* Y */ | |
| 721 zbin_extra = ZBIN_EXTRA_Y; | |
| 722 | |
| 723 for (i = 0; i < 16; i++) | |
| 724 x->block[i].zbin_extra = (short)zbin_extra; | |
| 725 | |
| 726 /* UV */ | |
| 727 zbin_extra = ZBIN_EXTRA_UV; | |
| 728 | |
| 729 for (i = 16; i < 24; i++) | |
| 730 x->block[i].zbin_extra = (short)zbin_extra; | |
| 731 | |
| 732 /* Y2 */ | |
| 733 zbin_extra = ZBIN_EXTRA_Y2; | |
| 734 x->block[24].zbin_extra = (short)zbin_extra; | |
| 735 | |
| 736 x->last_zbin_over_quant = x->zbin_over_quant; | |
| 737 x->last_zbin_mode_boost = x->zbin_mode_boost; | |
| 738 x->last_act_zbin_adj = x->act_zbin_adj; | |
| 739 } | |
| 740 } | |
| 741 | |
| 742 void vp8_update_zbin_extra(VP8_COMP *cpi, MACROBLOCK *x) | |
| 743 { | |
| 744 int i; | |
| 745 int QIndex = x->q_index; | |
| 746 int zbin_extra; | |
| 747 | |
| 748 /* Y */ | |
| 749 zbin_extra = ZBIN_EXTRA_Y; | |
| 750 | |
| 751 for (i = 0; i < 16; i++) | |
| 752 x->block[i].zbin_extra = (short)zbin_extra; | |
| 753 | |
| 754 /* UV */ | |
| 755 zbin_extra = ZBIN_EXTRA_UV; | |
| 756 | |
| 757 for (i = 16; i < 24; i++) | |
| 758 x->block[i].zbin_extra = (short)zbin_extra; | |
| 759 | |
| 760 /* Y2 */ | |
| 761 zbin_extra = ZBIN_EXTRA_Y2; | |
| 762 x->block[24].zbin_extra = (short)zbin_extra; | |
| 763 } | |
| 764 #undef ZBIN_EXTRA_Y | |
| 765 #undef ZBIN_EXTRA_UV | |
| 766 #undef ZBIN_EXTRA_Y2 | |
| 767 | |
| 768 void vp8cx_frame_init_quantizer(VP8_COMP *cpi) | |
| 769 { | |
| 770 /* Clear Zbin mode boost for default case */ | |
| 771 cpi->mb.zbin_mode_boost = 0; | |
| 772 | |
| 773 /* MB level quantizer setup */ | |
| 774 vp8cx_mb_init_quantizer(cpi, &cpi->mb, 0); | |
| 775 } | |
| 776 | |
| 777 | |
| 778 void vp8_set_quantizer(struct VP8_COMP *cpi, int Q) | |
| 779 { | |
| 780 VP8_COMMON *cm = &cpi->common; | |
| 781 MACROBLOCKD *mbd = &cpi->mb.e_mbd; | |
| 782 int update = 0; | |
| 783 int new_delta_q; | |
| 784 cm->base_qindex = Q; | |
| 785 | |
| 786 /* if any of the delta_q values are changing update flag has to be set */ | |
| 787 /* currently only y2dc_delta_q may change */ | |
| 788 | |
| 789 cm->y1dc_delta_q = 0; | |
| 790 cm->y2ac_delta_q = 0; | |
| 791 cm->uvdc_delta_q = 0; | |
| 792 cm->uvac_delta_q = 0; | |
| 793 | |
| 794 if (Q < 4) | |
| 795 { | |
| 796 new_delta_q = 4-Q; | |
| 797 } | |
| 798 else | |
| 799 new_delta_q = 0; | |
| 800 | |
| 801 update |= cm->y2dc_delta_q != new_delta_q; | |
| 802 cm->y2dc_delta_q = new_delta_q; | |
| 803 | |
| 804 | |
| 805 /* Set Segment specific quatizers */ | |
| 806 mbd->segment_feature_data[MB_LVL_ALT_Q][0] = cpi->segment_feature_data[MB_LVL_ALT_Q][0]; | |
| 807 mbd->segment_feature_data[MB_LVL_ALT_Q][1] = cpi->segment_feature_data[MB_LVL_ALT_Q][1]; | |
| 808 mbd->segment_feature_data[MB_LVL_ALT_Q][2] = cpi->segment_feature_data[MB_LVL_ALT_Q][2]; | |
| 809 mbd->segment_feature_data[MB_LVL_ALT_Q][3] = cpi->segment_feature_data[MB_LVL_ALT_Q][3]; | |
| 810 | |
| 811 /* quantizer has to be reinitialized for any delta_q changes */ | |
| 812 if(update) | |
| 813 vp8cx_init_quantizer(cpi); | |
| 814 | |
| 815 } |
