1/* 2 * Copyright (C) 2001-2011 Michael Niedermayer <michaelni@gmx.at> 3 * 4 * This file is part of FFmpeg. 5 * 6 * FFmpeg is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (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 GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with FFmpeg; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21#include <inttypes.h> 22#include <math.h> 23#include <stdio.h> 24#include <string.h> 25 26#include "libavutil/avassert.h" 27#include "libavutil/avutil.h" 28#include "libavutil/bswap.h" 29#include "libavutil/cpu.h" 30#include "libavutil/intreadwrite.h" 31#include "libavutil/mathematics.h" 32#include "libavutil/pixdesc.h" 33#include "config.h" 34#include "rgb2rgb.h" 35#include "swscale_internal.h" 36#include "swscale.h" 37 38DECLARE_ALIGNED(8, const uint8_t, ff_dither_8x8_128)[9][8] = { 39 { 36, 68, 60, 92, 34, 66, 58, 90, }, 40 { 100, 4, 124, 28, 98, 2, 122, 26, }, 41 { 52, 84, 44, 76, 50, 82, 42, 74, }, 42 { 116, 20, 108, 12, 114, 18, 106, 10, }, 43 { 32, 64, 56, 88, 38, 70, 62, 94, }, 44 { 96, 0, 120, 24, 102, 6, 126, 30, }, 45 { 48, 80, 40, 72, 54, 86, 46, 78, }, 46 { 112, 16, 104, 8, 118, 22, 110, 14, }, 47 { 36, 68, 60, 92, 34, 66, 58, 90, }, 48}; 49 50DECLARE_ALIGNED(8, static const uint8_t, sws_pb_64)[8] = { 51 64, 64, 64, 64, 64, 64, 64, 64 52}; 53 54static av_always_inline void fillPlane(uint8_t *plane, int stride, int width, 55 int height, int y, uint8_t val) 56{ 57 int i; 58 uint8_t *ptr = plane + stride * y; 59 for (i = 0; i < height; i++) { 60 memset(ptr, val, width); 61 ptr += stride; 62 } 63} 64 65static void hScale16To19_c(SwsContext *c, int16_t *_dst, int dstW, 66 const uint8_t *_src, const int16_t *filter, 67 const int32_t *filterPos, int filterSize) 68{ 69 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(c->srcFormat); 70 int i; 71 int32_t *dst = (int32_t *) _dst; 72 const uint16_t *src = (const uint16_t *) _src; 73 int bits = desc->comp[0].depth_minus1; 74 int sh = bits - 4; 75 76 if((isAnyRGB(c->srcFormat) || c->srcFormat==AV_PIX_FMT_PAL8) && desc->comp[0].depth_minus1<15) 77 sh= 9; 78 79 for (i = 0; i < dstW; i++) { 80 int j; 81 int srcPos = filterPos[i]; 82 int val = 0; 83 84 for (j = 0; j < filterSize; j++) { 85 val += src[srcPos + j] * filter[filterSize * i + j]; 86 } 87 // filter=14 bit, input=16 bit, output=30 bit, >> 11 makes 19 bit 88 dst[i] = FFMIN(val >> sh, (1 << 19) - 1); 89 } 90} 91 92static void hScale16To15_c(SwsContext *c, int16_t *dst, int dstW, 93 const uint8_t *_src, const int16_t *filter, 94 const int32_t *filterPos, int filterSize) 95{ 96 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(c->srcFormat); 97 int i; 98 const uint16_t *src = (const uint16_t *) _src; 99 int sh = desc->comp[0].depth_minus1; 100 101 if(sh<15) 102 sh= isAnyRGB(c->srcFormat) || c->srcFormat==AV_PIX_FMT_PAL8 ? 13 : desc->comp[0].depth_minus1; 103 104 for (i = 0; i < dstW; i++) { 105 int j; 106 int srcPos = filterPos[i]; 107 int val = 0; 108 109 for (j = 0; j < filterSize; j++) { 110 val += src[srcPos + j] * filter[filterSize * i + j]; 111 } 112 // filter=14 bit, input=16 bit, output=30 bit, >> 15 makes 15 bit 113 dst[i] = FFMIN(val >> sh, (1 << 15) - 1); 114 } 115} 116 117// bilinear / bicubic scaling 118static void hScale8To15_c(SwsContext *c, int16_t *dst, int dstW, 119 const uint8_t *src, const int16_t *filter, 120 const int32_t *filterPos, int filterSize) 121{ 122 int i; 123 for (i = 0; i < dstW; i++) { 124 int j; 125 int srcPos = filterPos[i]; 126 int val = 0; 127 for (j = 0; j < filterSize; j++) { 128 val += ((int)src[srcPos + j]) * filter[filterSize * i + j]; 129 } 130 dst[i] = FFMIN(val >> 7, (1 << 15) - 1); // the cubic equation does overflow ... 131 } 132} 133 134static void hScale8To19_c(SwsContext *c, int16_t *_dst, int dstW, 135 const uint8_t *src, const int16_t *filter, 136 const int32_t *filterPos, int filterSize) 137{ 138 int i; 139 int32_t *dst = (int32_t *) _dst; 140 for (i = 0; i < dstW; i++) { 141 int j; 142 int srcPos = filterPos[i]; 143 int val = 0; 144 for (j = 0; j < filterSize; j++) { 145 val += ((int)src[srcPos + j]) * filter[filterSize * i + j]; 146 } 147 dst[i] = FFMIN(val >> 3, (1 << 19) - 1); // the cubic equation does overflow ... 148 } 149} 150 151// FIXME all pal and rgb srcFormats could do this conversion as well 152// FIXME all scalers more complex than bilinear could do half of this transform 153static void chrRangeToJpeg_c(int16_t *dstU, int16_t *dstV, int width) 154{ 155 int i; 156 for (i = 0; i < width; i++) { 157 dstU[i] = (FFMIN(dstU[i], 30775) * 4663 - 9289992) >> 12; // -264 158 dstV[i] = (FFMIN(dstV[i], 30775) * 4663 - 9289992) >> 12; // -264 159 } 160} 161 162static void chrRangeFromJpeg_c(int16_t *dstU, int16_t *dstV, int width) 163{ 164 int i; 165 for (i = 0; i < width; i++) { 166 dstU[i] = (dstU[i] * 1799 + 4081085) >> 11; // 1469 167 dstV[i] = (dstV[i] * 1799 + 4081085) >> 11; // 1469 168 } 169} 170 171static void lumRangeToJpeg_c(int16_t *dst, int width) 172{ 173 int i; 174 for (i = 0; i < width; i++) 175 dst[i] = (FFMIN(dst[i], 30189) * 19077 - 39057361) >> 14; 176} 177 178static void lumRangeFromJpeg_c(int16_t *dst, int width) 179{ 180 int i; 181 for (i = 0; i < width; i++) 182 dst[i] = (dst[i] * 14071 + 33561947) >> 14; 183} 184 185static void chrRangeToJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width) 186{ 187 int i; 188 int32_t *dstU = (int32_t *) _dstU; 189 int32_t *dstV = (int32_t *) _dstV; 190 for (i = 0; i < width; i++) { 191 dstU[i] = (FFMIN(dstU[i], 30775 << 4) * 4663 - (9289992 << 4)) >> 12; // -264 192 dstV[i] = (FFMIN(dstV[i], 30775 << 4) * 4663 - (9289992 << 4)) >> 12; // -264 193 } 194} 195 196static void chrRangeFromJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width) 197{ 198 int i; 199 int32_t *dstU = (int32_t *) _dstU; 200 int32_t *dstV = (int32_t *) _dstV; 201 for (i = 0; i < width; i++) { 202 dstU[i] = (dstU[i] * 1799 + (4081085 << 4)) >> 11; // 1469 203 dstV[i] = (dstV[i] * 1799 + (4081085 << 4)) >> 11; // 1469 204 } 205} 206 207static void lumRangeToJpeg16_c(int16_t *_dst, int width) 208{ 209 int i; 210 int32_t *dst = (int32_t *) _dst; 211 for (i = 0; i < width; i++) { 212 dst[i] = ((int)(FFMIN(dst[i], 30189 << 4) * 4769U - (39057361 << 2))) >> 12; 213 } 214} 215 216static void lumRangeFromJpeg16_c(int16_t *_dst, int width) 217{ 218 int i; 219 int32_t *dst = (int32_t *) _dst; 220 for (i = 0; i < width; i++) 221 dst[i] = (dst[i]*(14071/4) + (33561947<<4)/4)>>12; 222} 223 224static void hyscale_fast_c(SwsContext *c, int16_t *dst, int dstWidth, 225 const uint8_t *src, int srcW, int xInc) 226{ 227 int i; 228 unsigned int xpos = 0; 229 for (i = 0; i < dstWidth; i++) { 230 register unsigned int xx = xpos >> 16; 231 register unsigned int xalpha = (xpos & 0xFFFF) >> 9; 232 dst[i] = (src[xx] << 7) + (src[xx + 1] - src[xx]) * xalpha; 233 xpos += xInc; 234 } 235 for (i=dstWidth-1; (i*xInc)>>16 >=srcW-1; i--) 236 dst[i] = src[srcW-1]*128; 237} 238 239// *** horizontal scale Y line to temp buffer 240static av_always_inline void hyscale(SwsContext *c, int16_t *dst, int dstWidth, 241 const uint8_t *src_in[4], 242 int srcW, int xInc, 243 const int16_t *hLumFilter, 244 const int32_t *hLumFilterPos, 245 int hLumFilterSize, 246 uint8_t *formatConvBuffer, 247 uint32_t *pal, int isAlpha) 248{ 249 void (*toYV12)(uint8_t *, const uint8_t *, const uint8_t *, const uint8_t *, int, uint32_t *) = 250 isAlpha ? c->alpToYV12 : c->lumToYV12; 251 void (*convertRange)(int16_t *, int) = isAlpha ? NULL : c->lumConvertRange; 252 const uint8_t *src = src_in[isAlpha ? 3 : 0]; 253 254 if (toYV12) { 255 toYV12(formatConvBuffer, src, src_in[1], src_in[2], srcW, pal); 256 src = formatConvBuffer; 257 } else if (c->readLumPlanar && !isAlpha) { 258 c->readLumPlanar(formatConvBuffer, src_in, srcW, c->input_rgb2yuv_table); 259 src = formatConvBuffer; 260 } else if (c->readAlpPlanar && isAlpha) { 261 c->readAlpPlanar(formatConvBuffer, src_in, srcW, NULL); 262 src = formatConvBuffer; 263 } 264 265 if (!c->hyscale_fast) { 266 c->hyScale(c, dst, dstWidth, src, hLumFilter, 267 hLumFilterPos, hLumFilterSize); 268 } else { // fast bilinear upscale / crap downscale 269 c->hyscale_fast(c, dst, dstWidth, src, srcW, xInc); 270 } 271 272 if (convertRange) 273 convertRange(dst, dstWidth); 274} 275 276static void hcscale_fast_c(SwsContext *c, int16_t *dst1, int16_t *dst2, 277 int dstWidth, const uint8_t *src1, 278 const uint8_t *src2, int srcW, int xInc) 279{ 280 int i; 281 unsigned int xpos = 0; 282 for (i = 0; i < dstWidth; i++) { 283 register unsigned int xx = xpos >> 16; 284 register unsigned int xalpha = (xpos & 0xFFFF) >> 9; 285 dst1[i] = (src1[xx] * (xalpha ^ 127) + src1[xx + 1] * xalpha); 286 dst2[i] = (src2[xx] * (xalpha ^ 127) + src2[xx + 1] * xalpha); 287 xpos += xInc; 288 } 289 for (i=dstWidth-1; (i*xInc)>>16 >=srcW-1; i--) { 290 dst1[i] = src1[srcW-1]*128; 291 dst2[i] = src2[srcW-1]*128; 292 } 293} 294 295static av_always_inline void hcscale(SwsContext *c, int16_t *dst1, 296 int16_t *dst2, int dstWidth, 297 const uint8_t *src_in[4], 298 int srcW, int xInc, 299 const int16_t *hChrFilter, 300 const int32_t *hChrFilterPos, 301 int hChrFilterSize, 302 uint8_t *formatConvBuffer, uint32_t *pal) 303{ 304 const uint8_t *src1 = src_in[1], *src2 = src_in[2]; 305 if (c->chrToYV12) { 306 uint8_t *buf2 = formatConvBuffer + 307 FFALIGN(srcW*2+78, 16); 308 c->chrToYV12(formatConvBuffer, buf2, src_in[0], src1, src2, srcW, pal); 309 src1= formatConvBuffer; 310 src2= buf2; 311 } else if (c->readChrPlanar) { 312 uint8_t *buf2 = formatConvBuffer + 313 FFALIGN(srcW*2+78, 16); 314 c->readChrPlanar(formatConvBuffer, buf2, src_in, srcW, c->input_rgb2yuv_table); 315 src1 = formatConvBuffer; 316 src2 = buf2; 317 } 318 319 if (!c->hcscale_fast) { 320 c->hcScale(c, dst1, dstWidth, src1, hChrFilter, hChrFilterPos, hChrFilterSize); 321 c->hcScale(c, dst2, dstWidth, src2, hChrFilter, hChrFilterPos, hChrFilterSize); 322 } else { // fast bilinear upscale / crap downscale 323 c->hcscale_fast(c, dst1, dst2, dstWidth, src1, src2, srcW, xInc); 324 } 325 326 if (c->chrConvertRange) 327 c->chrConvertRange(dst1, dst2, dstWidth); 328} 329 330#define DEBUG_SWSCALE_BUFFERS 0 331#define DEBUG_BUFFERS(...) \ 332 if (DEBUG_SWSCALE_BUFFERS) \ 333 av_log(c, AV_LOG_DEBUG, __VA_ARGS__) 334 335static int swscale(SwsContext *c, const uint8_t *src[], 336 int srcStride[], int srcSliceY, 337 int srcSliceH, uint8_t *dst[], int dstStride[]) 338{ 339 /* load a few things into local vars to make the code more readable? 340 * and faster */ 341 const int srcW = c->srcW; 342 const int dstW = c->dstW; 343 const int dstH = c->dstH; 344 const int chrDstW = c->chrDstW; 345 const int chrSrcW = c->chrSrcW; 346 const int lumXInc = c->lumXInc; 347 const int chrXInc = c->chrXInc; 348 const enum AVPixelFormat dstFormat = c->dstFormat; 349 const int flags = c->flags; 350 int32_t *vLumFilterPos = c->vLumFilterPos; 351 int32_t *vChrFilterPos = c->vChrFilterPos; 352 int32_t *hLumFilterPos = c->hLumFilterPos; 353 int32_t *hChrFilterPos = c->hChrFilterPos; 354 int16_t *hLumFilter = c->hLumFilter; 355 int16_t *hChrFilter = c->hChrFilter; 356 int32_t *lumMmxFilter = c->lumMmxFilter; 357 int32_t *chrMmxFilter = c->chrMmxFilter; 358 const int vLumFilterSize = c->vLumFilterSize; 359 const int vChrFilterSize = c->vChrFilterSize; 360 const int hLumFilterSize = c->hLumFilterSize; 361 const int hChrFilterSize = c->hChrFilterSize; 362 int16_t **lumPixBuf = c->lumPixBuf; 363 int16_t **chrUPixBuf = c->chrUPixBuf; 364 int16_t **chrVPixBuf = c->chrVPixBuf; 365 int16_t **alpPixBuf = c->alpPixBuf; 366 const int vLumBufSize = c->vLumBufSize; 367 const int vChrBufSize = c->vChrBufSize; 368 uint8_t *formatConvBuffer = c->formatConvBuffer; 369 uint32_t *pal = c->pal_yuv; 370 yuv2planar1_fn yuv2plane1 = c->yuv2plane1; 371 yuv2planarX_fn yuv2planeX = c->yuv2planeX; 372 yuv2interleavedX_fn yuv2nv12cX = c->yuv2nv12cX; 373 yuv2packed1_fn yuv2packed1 = c->yuv2packed1; 374 yuv2packed2_fn yuv2packed2 = c->yuv2packed2; 375 yuv2packedX_fn yuv2packedX = c->yuv2packedX; 376 yuv2anyX_fn yuv2anyX = c->yuv2anyX; 377 const int chrSrcSliceY = srcSliceY >> c->chrSrcVSubSample; 378 const int chrSrcSliceH = FF_CEIL_RSHIFT(srcSliceH, c->chrSrcVSubSample); 379 int should_dither = is9_OR_10BPS(c->srcFormat) || 380 is16BPS(c->srcFormat); 381 int lastDstY; 382 383 /* vars which will change and which we need to store back in the context */ 384 int dstY = c->dstY; 385 int lumBufIndex = c->lumBufIndex; 386 int chrBufIndex = c->chrBufIndex; 387 int lastInLumBuf = c->lastInLumBuf; 388 int lastInChrBuf = c->lastInChrBuf; 389 390 if (!usePal(c->srcFormat)) { 391 pal = c->input_rgb2yuv_table; 392 } 393 394 if (isPacked(c->srcFormat)) { 395 src[0] = 396 src[1] = 397 src[2] = 398 src[3] = src[0]; 399 srcStride[0] = 400 srcStride[1] = 401 srcStride[2] = 402 srcStride[3] = srcStride[0]; 403 } 404 srcStride[1] <<= c->vChrDrop; 405 srcStride[2] <<= c->vChrDrop; 406 407 DEBUG_BUFFERS("swscale() %p[%d] %p[%d] %p[%d] %p[%d] -> %p[%d] %p[%d] %p[%d] %p[%d]\n", 408 src[0], srcStride[0], src[1], srcStride[1], 409 src[2], srcStride[2], src[3], srcStride[3], 410 dst[0], dstStride[0], dst[1], dstStride[1], 411 dst[2], dstStride[2], dst[3], dstStride[3]); 412 DEBUG_BUFFERS("srcSliceY: %d srcSliceH: %d dstY: %d dstH: %d\n", 413 srcSliceY, srcSliceH, dstY, dstH); 414 DEBUG_BUFFERS("vLumFilterSize: %d vLumBufSize: %d vChrFilterSize: %d vChrBufSize: %d\n", 415 vLumFilterSize, vLumBufSize, vChrFilterSize, vChrBufSize); 416 417 if (dstStride[0]&15 || dstStride[1]&15 || 418 dstStride[2]&15 || dstStride[3]&15) { 419 static int warnedAlready = 0; // FIXME maybe move this into the context 420 if (flags & SWS_PRINT_INFO && !warnedAlready) { 421 av_log(c, AV_LOG_WARNING, 422 "Warning: dstStride is not aligned!\n" 423 " ->cannot do aligned memory accesses anymore\n"); 424 warnedAlready = 1; 425 } 426 } 427 428 if ( (uintptr_t)dst[0]&15 || (uintptr_t)dst[1]&15 || (uintptr_t)dst[2]&15 429 || (uintptr_t)src[0]&15 || (uintptr_t)src[1]&15 || (uintptr_t)src[2]&15 430 || dstStride[0]&15 || dstStride[1]&15 || dstStride[2]&15 || dstStride[3]&15 431 || srcStride[0]&15 || srcStride[1]&15 || srcStride[2]&15 || srcStride[3]&15 432 ) { 433 static int warnedAlready=0; 434 int cpu_flags = av_get_cpu_flags(); 435 if (HAVE_MMXEXT && (cpu_flags & AV_CPU_FLAG_SSE2) && !warnedAlready){ 436 av_log(c, AV_LOG_WARNING, "Warning: data is not aligned! This can lead to a speedloss\n"); 437 warnedAlready=1; 438 } 439 } 440 441 /* Note the user might start scaling the picture in the middle so this 442 * will not get executed. This is not really intended but works 443 * currently, so people might do it. */ 444 if (srcSliceY == 0) { 445 lumBufIndex = -1; 446 chrBufIndex = -1; 447 dstY = 0; 448 lastInLumBuf = -1; 449 lastInChrBuf = -1; 450 } 451 452 if (!should_dither) { 453 c->chrDither8 = c->lumDither8 = sws_pb_64; 454 } 455 lastDstY = dstY; 456 457 for (; dstY < dstH; dstY++) { 458 const int chrDstY = dstY >> c->chrDstVSubSample; 459 uint8_t *dest[4] = { 460 dst[0] + dstStride[0] * dstY, 461 dst[1] + dstStride[1] * chrDstY, 462 dst[2] + dstStride[2] * chrDstY, 463 (CONFIG_SWSCALE_ALPHA && alpPixBuf) ? dst[3] + dstStride[3] * dstY : NULL, 464 }; 465 int use_mmx_vfilter= c->use_mmx_vfilter; 466 467 // First line needed as input 468 const int firstLumSrcY = FFMAX(1 - vLumFilterSize, vLumFilterPos[dstY]); 469 const int firstLumSrcY2 = FFMAX(1 - vLumFilterSize, vLumFilterPos[FFMIN(dstY | ((1 << c->chrDstVSubSample) - 1), dstH - 1)]); 470 // First line needed as input 471 const int firstChrSrcY = FFMAX(1 - vChrFilterSize, vChrFilterPos[chrDstY]); 472 473 // Last line needed as input 474 int lastLumSrcY = FFMIN(c->srcH, firstLumSrcY + vLumFilterSize) - 1; 475 int lastLumSrcY2 = FFMIN(c->srcH, firstLumSrcY2 + vLumFilterSize) - 1; 476 int lastChrSrcY = FFMIN(c->chrSrcH, firstChrSrcY + vChrFilterSize) - 1; 477 int enough_lines; 478 479 // handle holes (FAST_BILINEAR & weird filters) 480 if (firstLumSrcY > lastInLumBuf) 481 lastInLumBuf = firstLumSrcY - 1; 482 if (firstChrSrcY > lastInChrBuf) 483 lastInChrBuf = firstChrSrcY - 1; 484 av_assert0(firstLumSrcY >= lastInLumBuf - vLumBufSize + 1); 485 av_assert0(firstChrSrcY >= lastInChrBuf - vChrBufSize + 1); 486 487 DEBUG_BUFFERS("dstY: %d\n", dstY); 488 DEBUG_BUFFERS("\tfirstLumSrcY: %d lastLumSrcY: %d lastInLumBuf: %d\n", 489 firstLumSrcY, lastLumSrcY, lastInLumBuf); 490 DEBUG_BUFFERS("\tfirstChrSrcY: %d lastChrSrcY: %d lastInChrBuf: %d\n", 491 firstChrSrcY, lastChrSrcY, lastInChrBuf); 492 493 // Do we have enough lines in this slice to output the dstY line 494 enough_lines = lastLumSrcY2 < srcSliceY + srcSliceH && 495 lastChrSrcY < FF_CEIL_RSHIFT(srcSliceY + srcSliceH, c->chrSrcVSubSample); 496 497 if (!enough_lines) { 498 lastLumSrcY = srcSliceY + srcSliceH - 1; 499 lastChrSrcY = chrSrcSliceY + chrSrcSliceH - 1; 500 DEBUG_BUFFERS("buffering slice: lastLumSrcY %d lastChrSrcY %d\n", 501 lastLumSrcY, lastChrSrcY); 502 } 503 504 // Do horizontal scaling 505 while (lastInLumBuf < lastLumSrcY) { 506 const uint8_t *src1[4] = { 507 src[0] + (lastInLumBuf + 1 - srcSliceY) * srcStride[0], 508 src[1] + (lastInLumBuf + 1 - srcSliceY) * srcStride[1], 509 src[2] + (lastInLumBuf + 1 - srcSliceY) * srcStride[2], 510 src[3] + (lastInLumBuf + 1 - srcSliceY) * srcStride[3], 511 }; 512 lumBufIndex++; 513 av_assert0(lumBufIndex < 2 * vLumBufSize); 514 av_assert0(lastInLumBuf + 1 - srcSliceY < srcSliceH); 515 av_assert0(lastInLumBuf + 1 - srcSliceY >= 0); 516 hyscale(c, lumPixBuf[lumBufIndex], dstW, src1, srcW, lumXInc, 517 hLumFilter, hLumFilterPos, hLumFilterSize, 518 formatConvBuffer, pal, 0); 519 if (CONFIG_SWSCALE_ALPHA && alpPixBuf) 520 hyscale(c, alpPixBuf[lumBufIndex], dstW, src1, srcW, 521 lumXInc, hLumFilter, hLumFilterPos, hLumFilterSize, 522 formatConvBuffer, pal, 1); 523 lastInLumBuf++; 524 DEBUG_BUFFERS("\t\tlumBufIndex %d: lastInLumBuf: %d\n", 525 lumBufIndex, lastInLumBuf); 526 } 527 while (lastInChrBuf < lastChrSrcY) { 528 const uint8_t *src1[4] = { 529 src[0] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[0], 530 src[1] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[1], 531 src[2] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[2], 532 src[3] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[3], 533 }; 534 chrBufIndex++; 535 av_assert0(chrBufIndex < 2 * vChrBufSize); 536 av_assert0(lastInChrBuf + 1 - chrSrcSliceY < (chrSrcSliceH)); 537 av_assert0(lastInChrBuf + 1 - chrSrcSliceY >= 0); 538 // FIXME replace parameters through context struct (some at least) 539 540 if (c->needs_hcscale) 541 hcscale(c, chrUPixBuf[chrBufIndex], chrVPixBuf[chrBufIndex], 542 chrDstW, src1, chrSrcW, chrXInc, 543 hChrFilter, hChrFilterPos, hChrFilterSize, 544 formatConvBuffer, pal); 545 lastInChrBuf++; 546 DEBUG_BUFFERS("\t\tchrBufIndex %d: lastInChrBuf: %d\n", 547 chrBufIndex, lastInChrBuf); 548 } 549 // wrap buf index around to stay inside the ring buffer 550 if (lumBufIndex >= vLumBufSize) 551 lumBufIndex -= vLumBufSize; 552 if (chrBufIndex >= vChrBufSize) 553 chrBufIndex -= vChrBufSize; 554 if (!enough_lines) 555 break; // we can't output a dstY line so let's try with the next slice 556 557#if HAVE_MMX_INLINE 558 updateMMXDitherTables(c, dstY, lumBufIndex, chrBufIndex, 559 lastInLumBuf, lastInChrBuf); 560#endif 561 if (should_dither) { 562 c->chrDither8 = ff_dither_8x8_128[chrDstY & 7]; 563 c->lumDither8 = ff_dither_8x8_128[dstY & 7]; 564 } 565 if (dstY >= dstH - 2) { 566 /* hmm looks like we can't use MMX here without overwriting 567 * this array's tail */ 568 ff_sws_init_output_funcs(c, &yuv2plane1, &yuv2planeX, &yuv2nv12cX, 569 &yuv2packed1, &yuv2packed2, &yuv2packedX, &yuv2anyX); 570 use_mmx_vfilter= 0; 571 } 572 573 { 574 const int16_t **lumSrcPtr = (const int16_t **)(void*) lumPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize; 575 const int16_t **chrUSrcPtr = (const int16_t **)(void*) chrUPixBuf + chrBufIndex + firstChrSrcY - lastInChrBuf + vChrBufSize; 576 const int16_t **chrVSrcPtr = (const int16_t **)(void*) chrVPixBuf + chrBufIndex + firstChrSrcY - lastInChrBuf + vChrBufSize; 577 const int16_t **alpSrcPtr = (CONFIG_SWSCALE_ALPHA && alpPixBuf) ? 578 (const int16_t **)(void*) alpPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize : NULL; 579 int16_t *vLumFilter = c->vLumFilter; 580 int16_t *vChrFilter = c->vChrFilter; 581 582 if (isPlanarYUV(dstFormat) || 583 (isGray(dstFormat) && !isALPHA(dstFormat))) { // YV12 like 584 const int chrSkipMask = (1 << c->chrDstVSubSample) - 1; 585 586 vLumFilter += dstY * vLumFilterSize; 587 vChrFilter += chrDstY * vChrFilterSize; 588 589// av_assert0(use_mmx_vfilter != ( 590// yuv2planeX == yuv2planeX_10BE_c 591// || yuv2planeX == yuv2planeX_10LE_c 592// || yuv2planeX == yuv2planeX_9BE_c 593// || yuv2planeX == yuv2planeX_9LE_c 594// || yuv2planeX == yuv2planeX_16BE_c 595// || yuv2planeX == yuv2planeX_16LE_c 596// || yuv2planeX == yuv2planeX_8_c) || !ARCH_X86); 597 598 if(use_mmx_vfilter){ 599 vLumFilter= (int16_t *)c->lumMmxFilter; 600 vChrFilter= (int16_t *)c->chrMmxFilter; 601 } 602 603 if (vLumFilterSize == 1) { 604 yuv2plane1(lumSrcPtr[0], dest[0], dstW, c->lumDither8, 0); 605 } else { 606 yuv2planeX(vLumFilter, vLumFilterSize, 607 lumSrcPtr, dest[0], 608 dstW, c->lumDither8, 0); 609 } 610 611 if (!((dstY & chrSkipMask) || isGray(dstFormat))) { 612 if (yuv2nv12cX) { 613 yuv2nv12cX(c, vChrFilter, 614 vChrFilterSize, chrUSrcPtr, chrVSrcPtr, 615 dest[1], chrDstW); 616 } else if (vChrFilterSize == 1) { 617 yuv2plane1(chrUSrcPtr[0], dest[1], chrDstW, c->chrDither8, 0); 618 yuv2plane1(chrVSrcPtr[0], dest[2], chrDstW, c->chrDither8, 3); 619 } else { 620 yuv2planeX(vChrFilter, 621 vChrFilterSize, chrUSrcPtr, dest[1], 622 chrDstW, c->chrDither8, 0); 623 yuv2planeX(vChrFilter, 624 vChrFilterSize, chrVSrcPtr, dest[2], 625 chrDstW, c->chrDither8, use_mmx_vfilter ? (c->uv_offx2 >> 1) : 3); 626 } 627 } 628 629 if (CONFIG_SWSCALE_ALPHA && alpPixBuf) { 630 if(use_mmx_vfilter){ 631 vLumFilter= (int16_t *)c->alpMmxFilter; 632 } 633 if (vLumFilterSize == 1) { 634 yuv2plane1(alpSrcPtr[0], dest[3], dstW, 635 c->lumDither8, 0); 636 } else { 637 yuv2planeX(vLumFilter, 638 vLumFilterSize, alpSrcPtr, dest[3], 639 dstW, c->lumDither8, 0); 640 } 641 } 642 } else if (yuv2packedX) { 643 av_assert1(lumSrcPtr + vLumFilterSize - 1 < (const int16_t **)lumPixBuf + vLumBufSize * 2); 644 av_assert1(chrUSrcPtr + vChrFilterSize - 1 < (const int16_t **)chrUPixBuf + vChrBufSize * 2); 645 if (c->yuv2packed1 && vLumFilterSize == 1 && 646 vChrFilterSize <= 2) { // unscaled RGB 647 int chrAlpha = vChrFilterSize == 1 ? 0 : vChrFilter[2 * dstY + 1]; 648 yuv2packed1(c, *lumSrcPtr, chrUSrcPtr, chrVSrcPtr, 649 alpPixBuf ? *alpSrcPtr : NULL, 650 dest[0], dstW, chrAlpha, dstY); 651 } else if (c->yuv2packed2 && vLumFilterSize == 2 && 652 vChrFilterSize == 2) { // bilinear upscale RGB 653 int lumAlpha = vLumFilter[2 * dstY + 1]; 654 int chrAlpha = vChrFilter[2 * dstY + 1]; 655 lumMmxFilter[2] = 656 lumMmxFilter[3] = vLumFilter[2 * dstY] * 0x10001; 657 chrMmxFilter[2] = 658 chrMmxFilter[3] = vChrFilter[2 * chrDstY] * 0x10001; 659 yuv2packed2(c, lumSrcPtr, chrUSrcPtr, chrVSrcPtr, 660 alpPixBuf ? alpSrcPtr : NULL, 661 dest[0], dstW, lumAlpha, chrAlpha, dstY); 662 } else { // general RGB 663 yuv2packedX(c, vLumFilter + dstY * vLumFilterSize, 664 lumSrcPtr, vLumFilterSize, 665 vChrFilter + dstY * vChrFilterSize, 666 chrUSrcPtr, chrVSrcPtr, vChrFilterSize, 667 alpSrcPtr, dest[0], dstW, dstY); 668 } 669 } else { 670 av_assert1(!yuv2packed1 && !yuv2packed2); 671 yuv2anyX(c, vLumFilter + dstY * vLumFilterSize, 672 lumSrcPtr, vLumFilterSize, 673 vChrFilter + dstY * vChrFilterSize, 674 chrUSrcPtr, chrVSrcPtr, vChrFilterSize, 675 alpSrcPtr, dest, dstW, dstY); 676 } 677 } 678 } 679 if (isPlanar(dstFormat) && isALPHA(dstFormat) && !alpPixBuf) { 680 int length = dstW; 681 int height = dstY - lastDstY; 682 683 if (is16BPS(dstFormat) || isNBPS(dstFormat)) { 684 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(dstFormat); 685 fillPlane16(dst[3], dstStride[3], length, height, lastDstY, 686 1, desc->comp[3].depth_minus1, 687 isBE(dstFormat)); 688 } else 689 fillPlane(dst[3], dstStride[3], length, height, lastDstY, 255); 690 } 691 692#if HAVE_MMXEXT_INLINE 693 if (av_get_cpu_flags() & AV_CPU_FLAG_MMXEXT) 694 __asm__ volatile ("sfence" ::: "memory"); 695#endif 696 emms_c(); 697 698 /* store changed local vars back in the context */ 699 c->dstY = dstY; 700 c->lumBufIndex = lumBufIndex; 701 c->chrBufIndex = chrBufIndex; 702 c->lastInLumBuf = lastInLumBuf; 703 c->lastInChrBuf = lastInChrBuf; 704 705 return dstY - lastDstY; 706} 707 708av_cold void ff_sws_init_range_convert(SwsContext *c) 709{ 710 c->lumConvertRange = NULL; 711 c->chrConvertRange = NULL; 712 if (c->srcRange != c->dstRange && !isAnyRGB(c->dstFormat)) { 713 if (c->dstBpc <= 14) { 714 if (c->srcRange) { 715 c->lumConvertRange = lumRangeFromJpeg_c; 716 c->chrConvertRange = chrRangeFromJpeg_c; 717 } else { 718 c->lumConvertRange = lumRangeToJpeg_c; 719 c->chrConvertRange = chrRangeToJpeg_c; 720 } 721 } else { 722 if (c->srcRange) { 723 c->lumConvertRange = lumRangeFromJpeg16_c; 724 c->chrConvertRange = chrRangeFromJpeg16_c; 725 } else { 726 c->lumConvertRange = lumRangeToJpeg16_c; 727 c->chrConvertRange = chrRangeToJpeg16_c; 728 } 729 } 730 } 731} 732 733static av_cold void sws_init_swscale(SwsContext *c) 734{ 735 enum AVPixelFormat srcFormat = c->srcFormat; 736 737 ff_sws_init_output_funcs(c, &c->yuv2plane1, &c->yuv2planeX, 738 &c->yuv2nv12cX, &c->yuv2packed1, 739 &c->yuv2packed2, &c->yuv2packedX, &c->yuv2anyX); 740 741 ff_sws_init_input_funcs(c); 742 743 744 if (c->srcBpc == 8) { 745 if (c->dstBpc <= 14) { 746 c->hyScale = c->hcScale = hScale8To15_c; 747 if (c->flags & SWS_FAST_BILINEAR) { 748 c->hyscale_fast = hyscale_fast_c; 749 c->hcscale_fast = hcscale_fast_c; 750 } 751 } else { 752 c->hyScale = c->hcScale = hScale8To19_c; 753 } 754 } else { 755 c->hyScale = c->hcScale = c->dstBpc > 14 ? hScale16To19_c 756 : hScale16To15_c; 757 } 758 759 ff_sws_init_range_convert(c); 760 761 if (!(isGray(srcFormat) || isGray(c->dstFormat) || 762 srcFormat == AV_PIX_FMT_MONOBLACK || srcFormat == AV_PIX_FMT_MONOWHITE)) 763 c->needs_hcscale = 1; 764} 765 766SwsFunc ff_getSwsFunc(SwsContext *c) 767{ 768 sws_init_swscale(c); 769 770 if (ARCH_PPC) 771 ff_sws_init_swscale_ppc(c); 772 if (ARCH_X86) 773 ff_sws_init_swscale_x86(c); 774 775 return swscale; 776} 777 778static void reset_ptr(const uint8_t *src[], int format) 779{ 780 if (!isALPHA(format)) 781 src[3] = NULL; 782 if (!isPlanar(format)) { 783 src[3] = src[2] = NULL; 784 785 if (!usePal(format)) 786 src[1] = NULL; 787 } 788} 789 790static int check_image_pointers(const uint8_t * const data[4], enum AVPixelFormat pix_fmt, 791 const int linesizes[4]) 792{ 793 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); 794 int i; 795 796 for (i = 0; i < 4; i++) { 797 int plane = desc->comp[i].plane; 798 if (!data[plane] || !linesizes[plane]) 799 return 0; 800 } 801 802 return 1; 803} 804 805static void xyz12Torgb48(struct SwsContext *c, uint16_t *dst, 806 const uint16_t *src, int stride, int h) 807{ 808 int xp,yp; 809 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(c->srcFormat); 810 811 for (yp=0; yp<h; yp++) { 812 for (xp=0; xp+2<stride; xp+=3) { 813 int x, y, z, r, g, b; 814 815 if (desc->flags & AV_PIX_FMT_FLAG_BE) { 816 x = AV_RB16(src + xp + 0); 817 y = AV_RB16(src + xp + 1); 818 z = AV_RB16(src + xp + 2); 819 } else { 820 x = AV_RL16(src + xp + 0); 821 y = AV_RL16(src + xp + 1); 822 z = AV_RL16(src + xp + 2); 823 } 824 825 x = c->xyzgamma[x>>4]; 826 y = c->xyzgamma[y>>4]; 827 z = c->xyzgamma[z>>4]; 828 829 // convert from XYZlinear to sRGBlinear 830 r = c->xyz2rgb_matrix[0][0] * x + 831 c->xyz2rgb_matrix[0][1] * y + 832 c->xyz2rgb_matrix[0][2] * z >> 12; 833 g = c->xyz2rgb_matrix[1][0] * x + 834 c->xyz2rgb_matrix[1][1] * y + 835 c->xyz2rgb_matrix[1][2] * z >> 12; 836 b = c->xyz2rgb_matrix[2][0] * x + 837 c->xyz2rgb_matrix[2][1] * y + 838 c->xyz2rgb_matrix[2][2] * z >> 12; 839 840 // limit values to 12-bit depth 841 r = av_clip_c(r,0,4095); 842 g = av_clip_c(g,0,4095); 843 b = av_clip_c(b,0,4095); 844 845 // convert from sRGBlinear to RGB and scale from 12bit to 16bit 846 if (desc->flags & AV_PIX_FMT_FLAG_BE) { 847 AV_WB16(dst + xp + 0, c->rgbgamma[r] << 4); 848 AV_WB16(dst + xp + 1, c->rgbgamma[g] << 4); 849 AV_WB16(dst + xp + 2, c->rgbgamma[b] << 4); 850 } else { 851 AV_WL16(dst + xp + 0, c->rgbgamma[r] << 4); 852 AV_WL16(dst + xp + 1, c->rgbgamma[g] << 4); 853 AV_WL16(dst + xp + 2, c->rgbgamma[b] << 4); 854 } 855 } 856 src += stride; 857 dst += stride; 858 } 859} 860 861static void rgb48Toxyz12(struct SwsContext *c, uint16_t *dst, 862 const uint16_t *src, int stride, int h) 863{ 864 int xp,yp; 865 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(c->dstFormat); 866 867 for (yp=0; yp<h; yp++) { 868 for (xp=0; xp+2<stride; xp+=3) { 869 int x, y, z, r, g, b; 870 871 if (desc->flags & AV_PIX_FMT_FLAG_BE) { 872 r = AV_RB16(src + xp + 0); 873 g = AV_RB16(src + xp + 1); 874 b = AV_RB16(src + xp + 2); 875 } else { 876 r = AV_RL16(src + xp + 0); 877 g = AV_RL16(src + xp + 1); 878 b = AV_RL16(src + xp + 2); 879 } 880 881 r = c->rgbgammainv[r>>4]; 882 g = c->rgbgammainv[g>>4]; 883 b = c->rgbgammainv[b>>4]; 884 885 // convert from sRGBlinear to XYZlinear 886 x = c->rgb2xyz_matrix[0][0] * r + 887 c->rgb2xyz_matrix[0][1] * g + 888 c->rgb2xyz_matrix[0][2] * b >> 12; 889 y = c->rgb2xyz_matrix[1][0] * r + 890 c->rgb2xyz_matrix[1][1] * g + 891 c->rgb2xyz_matrix[1][2] * b >> 12; 892 z = c->rgb2xyz_matrix[2][0] * r + 893 c->rgb2xyz_matrix[2][1] * g + 894 c->rgb2xyz_matrix[2][2] * b >> 12; 895 896 // limit values to 12-bit depth 897 x = av_clip_c(x,0,4095); 898 y = av_clip_c(y,0,4095); 899 z = av_clip_c(z,0,4095); 900 901 // convert from XYZlinear to X'Y'Z' and scale from 12bit to 16bit 902 if (desc->flags & AV_PIX_FMT_FLAG_BE) { 903 AV_WB16(dst + xp + 0, c->xyzgammainv[x] << 4); 904 AV_WB16(dst + xp + 1, c->xyzgammainv[y] << 4); 905 AV_WB16(dst + xp + 2, c->xyzgammainv[z] << 4); 906 } else { 907 AV_WL16(dst + xp + 0, c->xyzgammainv[x] << 4); 908 AV_WL16(dst + xp + 1, c->xyzgammainv[y] << 4); 909 AV_WL16(dst + xp + 2, c->xyzgammainv[z] << 4); 910 } 911 } 912 src += stride; 913 dst += stride; 914 } 915} 916 917/** 918 * swscale wrapper, so we don't need to export the SwsContext. 919 * Assumes planar YUV to be in YUV order instead of YVU. 920 */ 921int attribute_align_arg sws_scale(struct SwsContext *c, 922 const uint8_t * const srcSlice[], 923 const int srcStride[], int srcSliceY, 924 int srcSliceH, uint8_t *const dst[], 925 const int dstStride[]) 926{ 927 int i, ret; 928 const uint8_t *src2[4]; 929 uint8_t *dst2[4]; 930 uint8_t *rgb0_tmp = NULL; 931 932 if (!srcStride || !dstStride || !dst || !srcSlice) { 933 av_log(c, AV_LOG_ERROR, "One of the input parameters to sws_scale() is NULL, please check the calling code\n"); 934 return 0; 935 } 936 memcpy(src2, srcSlice, sizeof(src2)); 937 memcpy(dst2, dst, sizeof(dst2)); 938 939 // do not mess up sliceDir if we have a "trailing" 0-size slice 940 if (srcSliceH == 0) 941 return 0; 942 943 if (!check_image_pointers(srcSlice, c->srcFormat, srcStride)) { 944 av_log(c, AV_LOG_ERROR, "bad src image pointers\n"); 945 return 0; 946 } 947 if (!check_image_pointers((const uint8_t* const*)dst, c->dstFormat, dstStride)) { 948 av_log(c, AV_LOG_ERROR, "bad dst image pointers\n"); 949 return 0; 950 } 951 952 if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) { 953 av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n"); 954 return 0; 955 } 956 if (c->sliceDir == 0) { 957 if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1; 958 } 959 960 if (usePal(c->srcFormat)) { 961 for (i = 0; i < 256; i++) { 962 int r, g, b, y, u, v, a = 0xff; 963 if (c->srcFormat == AV_PIX_FMT_PAL8) { 964 uint32_t p = ((const uint32_t *)(srcSlice[1]))[i]; 965 a = (p >> 24) & 0xFF; 966 r = (p >> 16) & 0xFF; 967 g = (p >> 8) & 0xFF; 968 b = p & 0xFF; 969 } else if (c->srcFormat == AV_PIX_FMT_RGB8) { 970 r = ( i >> 5 ) * 36; 971 g = ((i >> 2) & 7) * 36; 972 b = ( i & 3) * 85; 973 } else if (c->srcFormat == AV_PIX_FMT_BGR8) { 974 b = ( i >> 6 ) * 85; 975 g = ((i >> 3) & 7) * 36; 976 r = ( i & 7) * 36; 977 } else if (c->srcFormat == AV_PIX_FMT_RGB4_BYTE) { 978 r = ( i >> 3 ) * 255; 979 g = ((i >> 1) & 3) * 85; 980 b = ( i & 1) * 255; 981 } else if (c->srcFormat == AV_PIX_FMT_GRAY8 || c->srcFormat == AV_PIX_FMT_GRAY8A) { 982 r = g = b = i; 983 } else { 984 av_assert1(c->srcFormat == AV_PIX_FMT_BGR4_BYTE); 985 b = ( i >> 3 ) * 255; 986 g = ((i >> 1) & 3) * 85; 987 r = ( i & 1) * 255; 988 } 989#define RGB2YUV_SHIFT 15 990#define BY ( (int) (0.114 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)) 991#define BV (-(int) (0.081 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)) 992#define BU ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)) 993#define GY ( (int) (0.587 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)) 994#define GV (-(int) (0.419 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)) 995#define GU (-(int) (0.331 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)) 996#define RY ( (int) (0.299 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)) 997#define RV ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)) 998#define RU (-(int) (0.169 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5)) 999 1000 y = av_clip_uint8((RY * r + GY * g + BY * b + ( 33 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT); 1001 u = av_clip_uint8((RU * r + GU * g + BU * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT); 1002 v = av_clip_uint8((RV * r + GV * g + BV * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT); 1003 c->pal_yuv[i]= y + (u<<8) + (v<<16) + ((unsigned)a<<24); 1004 1005 switch (c->dstFormat) { 1006 case AV_PIX_FMT_BGR32: 1007#if !HAVE_BIGENDIAN 1008 case AV_PIX_FMT_RGB24: 1009#endif 1010 c->pal_rgb[i]= r + (g<<8) + (b<<16) + ((unsigned)a<<24); 1011 break; 1012 case AV_PIX_FMT_BGR32_1: 1013#if HAVE_BIGENDIAN 1014 case AV_PIX_FMT_BGR24: 1015#endif 1016 c->pal_rgb[i]= a + (r<<8) + (g<<16) + ((unsigned)b<<24); 1017 break; 1018 case AV_PIX_FMT_RGB32_1: 1019#if HAVE_BIGENDIAN 1020 case AV_PIX_FMT_RGB24: 1021#endif 1022 c->pal_rgb[i]= a + (b<<8) + (g<<16) + ((unsigned)r<<24); 1023 break; 1024 case AV_PIX_FMT_RGB32: 1025#if !HAVE_BIGENDIAN 1026 case AV_PIX_FMT_BGR24: 1027#endif 1028 default: 1029 c->pal_rgb[i]= b + (g<<8) + (r<<16) + ((unsigned)a<<24); 1030 } 1031 } 1032 } 1033 1034 if (c->src0Alpha && !c->dst0Alpha && isALPHA(c->dstFormat)) { 1035 uint8_t *base; 1036 int x,y; 1037 rgb0_tmp = av_malloc(FFABS(srcStride[0]) * srcSliceH + 32); 1038 if (!rgb0_tmp) 1039 return AVERROR(ENOMEM); 1040 1041 base = srcStride[0] < 0 ? rgb0_tmp - srcStride[0] * (srcSliceH-1) : rgb0_tmp; 1042 for (y=0; y<srcSliceH; y++){ 1043 memcpy(base + srcStride[0]*y, src2[0] + srcStride[0]*y, 4*c->srcW); 1044 for (x=c->src0Alpha-1; x<4*c->srcW; x+=4) { 1045 base[ srcStride[0]*y + x] = 0xFF; 1046 } 1047 } 1048 src2[0] = base; 1049 } 1050 1051 if (c->srcXYZ && !(c->dstXYZ && c->srcW==c->dstW && c->srcH==c->dstH)) { 1052 uint8_t *base; 1053 rgb0_tmp = av_malloc(FFABS(srcStride[0]) * srcSliceH + 32); 1054 if (!rgb0_tmp) 1055 return AVERROR(ENOMEM); 1056 1057 base = srcStride[0] < 0 ? rgb0_tmp - srcStride[0] * (srcSliceH-1) : rgb0_tmp; 1058 1059 xyz12Torgb48(c, (uint16_t*)base, (const uint16_t*)src2[0], srcStride[0]/2, srcSliceH); 1060 src2[0] = base; 1061 } 1062 1063 if (!srcSliceY && (c->flags & SWS_BITEXACT) && c->dither == SWS_DITHER_ED && c->dither_error[0]) 1064 for (i = 0; i < 4; i++) 1065 memset(c->dither_error[i], 0, sizeof(c->dither_error[0][0]) * (c->dstW+2)); 1066 1067 1068 // copy strides, so they can safely be modified 1069 if (c->sliceDir == 1) { 1070 // slices go from top to bottom 1071 int srcStride2[4] = { srcStride[0], srcStride[1], srcStride[2], 1072 srcStride[3] }; 1073 int dstStride2[4] = { dstStride[0], dstStride[1], dstStride[2], 1074 dstStride[3] }; 1075 1076 reset_ptr(src2, c->srcFormat); 1077 reset_ptr((void*)dst2, c->dstFormat); 1078 1079 /* reset slice direction at end of frame */ 1080 if (srcSliceY + srcSliceH == c->srcH) 1081 c->sliceDir = 0; 1082 1083 ret = c->swscale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2, 1084 dstStride2); 1085 } else { 1086 // slices go from bottom to top => we flip the image internally 1087 int srcStride2[4] = { -srcStride[0], -srcStride[1], -srcStride[2], 1088 -srcStride[3] }; 1089 int dstStride2[4] = { -dstStride[0], -dstStride[1], -dstStride[2], 1090 -dstStride[3] }; 1091 1092 src2[0] += (srcSliceH - 1) * srcStride[0]; 1093 if (!usePal(c->srcFormat)) 1094 src2[1] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[1]; 1095 src2[2] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[2]; 1096 src2[3] += (srcSliceH - 1) * srcStride[3]; 1097 dst2[0] += ( c->dstH - 1) * dstStride[0]; 1098 dst2[1] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[1]; 1099 dst2[2] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[2]; 1100 dst2[3] += ( c->dstH - 1) * dstStride[3]; 1101 1102 reset_ptr(src2, c->srcFormat); 1103 reset_ptr((void*)dst2, c->dstFormat); 1104 1105 /* reset slice direction at end of frame */ 1106 if (!srcSliceY) 1107 c->sliceDir = 0; 1108 1109 ret = c->swscale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, 1110 srcSliceH, dst2, dstStride2); 1111 } 1112 1113 1114 if (c->dstXYZ && !(c->srcXYZ && c->srcW==c->dstW && c->srcH==c->dstH)) { 1115 /* replace on the same data */ 1116 rgb48Toxyz12(c, (uint16_t*)dst2[0], (const uint16_t*)dst2[0], dstStride[0]/2, ret); 1117 } 1118 1119 av_free(rgb0_tmp); 1120 return ret; 1121} 1122 1123