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