2 * Copyright (C) 2001-2011 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of FFmpeg.
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.
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.
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
26 #include "libavutil/avassert.h"
27 #include "libavutil/avutil.h"
28 #include "libavutil/bswap.h"
29 #include "libavutil/cpu.h"
30 #include "libavutil/imgutils.h"
31 #include "libavutil/intreadwrite.h"
32 #include "libavutil/mathematics.h"
33 #include "libavutil/pixdesc.h"
36 #include "swscale_internal.h"
39 DECLARE_ALIGNED(8, const uint8_t, ff_dither_8x8_128)[9][8] = {
40 { 36, 68, 60, 92, 34, 66, 58, 90, },
41 { 100, 4, 124, 28, 98, 2, 122, 26, },
42 { 52, 84, 44, 76, 50, 82, 42, 74, },
43 { 116, 20, 108, 12, 114, 18, 106, 10, },
44 { 32, 64, 56, 88, 38, 70, 62, 94, },
45 { 96, 0, 120, 24, 102, 6, 126, 30, },
46 { 48, 80, 40, 72, 54, 86, 46, 78, },
47 { 112, 16, 104, 8, 118, 22, 110, 14, },
48 { 36, 68, 60, 92, 34, 66, 58, 90, },
51 DECLARE_ALIGNED(8, static const uint8_t, sws_pb_64)[8] = {
52 64, 64, 64, 64, 64, 64, 64, 64
56 static void gamma_convert(uint8_t * src[], int width, uint16_t *gamma)
59 uint16_t *src1 = (uint16_t*)src[0];
61 for (i = 0; i < width; ++i) {
62 uint16_t r = AV_RL16(src1 + i*4 + 0);
63 uint16_t g = AV_RL16(src1 + i*4 + 1);
64 uint16_t b = AV_RL16(src1 + i*4 + 2);
66 AV_WL16(src1 + i*4 + 0, gamma[r]);
67 AV_WL16(src1 + i*4 + 1, gamma[g]);
68 AV_WL16(src1 + i*4 + 2, gamma[b]);
73 static av_always_inline void fillPlane(uint8_t *plane, int stride, int width,
74 int height, int y, uint8_t val)
77 uint8_t *ptr = plane + stride * y;
78 for (i = 0; i < height; i++) {
79 memset(ptr, val, width);
84 static void hScale16To19_c(SwsContext *c, int16_t *_dst, int dstW,
85 const uint8_t *_src, const int16_t *filter,
86 const int32_t *filterPos, int filterSize)
88 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(c->srcFormat);
90 int32_t *dst = (int32_t *) _dst;
91 const uint16_t *src = (const uint16_t *) _src;
92 int bits = desc->comp[0].depth - 1;
95 if((isAnyRGB(c->srcFormat) || c->srcFormat==AV_PIX_FMT_PAL8) && desc->comp[0].depth<16)
98 for (i = 0; i < dstW; i++) {
100 int srcPos = filterPos[i];
103 for (j = 0; j < filterSize; j++) {
104 val += src[srcPos + j] * filter[filterSize * i + j];
106 // filter=14 bit, input=16 bit, output=30 bit, >> 11 makes 19 bit
107 dst[i] = FFMIN(val >> sh, (1 << 19) - 1);
111 static void hScale16To15_c(SwsContext *c, int16_t *dst, int dstW,
112 const uint8_t *_src, const int16_t *filter,
113 const int32_t *filterPos, int filterSize)
115 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(c->srcFormat);
117 const uint16_t *src = (const uint16_t *) _src;
118 int sh = desc->comp[0].depth - 1;
121 sh= isAnyRGB(c->srcFormat) || c->srcFormat==AV_PIX_FMT_PAL8 ? 13 : (desc->comp[0].depth - 1);
123 for (i = 0; i < dstW; i++) {
125 int srcPos = filterPos[i];
128 for (j = 0; j < filterSize; j++) {
129 val += src[srcPos + j] * filter[filterSize * i + j];
131 // filter=14 bit, input=16 bit, output=30 bit, >> 15 makes 15 bit
132 dst[i] = FFMIN(val >> sh, (1 << 15) - 1);
136 // bilinear / bicubic scaling
137 static void hScale8To15_c(SwsContext *c, int16_t *dst, int dstW,
138 const uint8_t *src, const int16_t *filter,
139 const int32_t *filterPos, int filterSize)
142 for (i = 0; i < dstW; i++) {
144 int srcPos = filterPos[i];
146 for (j = 0; j < filterSize; j++) {
147 val += ((int)src[srcPos + j]) * filter[filterSize * i + j];
149 dst[i] = FFMIN(val >> 7, (1 << 15) - 1); // the cubic equation does overflow ...
153 static void hScale8To19_c(SwsContext *c, int16_t *_dst, int dstW,
154 const uint8_t *src, const int16_t *filter,
155 const int32_t *filterPos, int filterSize)
158 int32_t *dst = (int32_t *) _dst;
159 for (i = 0; i < dstW; i++) {
161 int srcPos = filterPos[i];
163 for (j = 0; j < filterSize; j++) {
164 val += ((int)src[srcPos + j]) * filter[filterSize * i + j];
166 dst[i] = FFMIN(val >> 3, (1 << 19) - 1); // the cubic equation does overflow ...
170 // FIXME all pal and rgb srcFormats could do this conversion as well
171 // FIXME all scalers more complex than bilinear could do half of this transform
172 static void chrRangeToJpeg_c(int16_t *dstU, int16_t *dstV, int width)
175 for (i = 0; i < width; i++) {
176 dstU[i] = (FFMIN(dstU[i], 30775) * 4663 - 9289992) >> 12; // -264
177 dstV[i] = (FFMIN(dstV[i], 30775) * 4663 - 9289992) >> 12; // -264
181 static void chrRangeFromJpeg_c(int16_t *dstU, int16_t *dstV, int width)
184 for (i = 0; i < width; i++) {
185 dstU[i] = (dstU[i] * 1799 + 4081085) >> 11; // 1469
186 dstV[i] = (dstV[i] * 1799 + 4081085) >> 11; // 1469
190 static void lumRangeToJpeg_c(int16_t *dst, int width)
193 for (i = 0; i < width; i++)
194 dst[i] = (FFMIN(dst[i], 30189) * 19077 - 39057361) >> 14;
197 static void lumRangeFromJpeg_c(int16_t *dst, int width)
200 for (i = 0; i < width; i++)
201 dst[i] = (dst[i] * 14071 + 33561947) >> 14;
204 static void chrRangeToJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width)
207 int32_t *dstU = (int32_t *) _dstU;
208 int32_t *dstV = (int32_t *) _dstV;
209 for (i = 0; i < width; i++) {
210 dstU[i] = (FFMIN(dstU[i], 30775 << 4) * 4663 - (9289992 << 4)) >> 12; // -264
211 dstV[i] = (FFMIN(dstV[i], 30775 << 4) * 4663 - (9289992 << 4)) >> 12; // -264
215 static void chrRangeFromJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width)
218 int32_t *dstU = (int32_t *) _dstU;
219 int32_t *dstV = (int32_t *) _dstV;
220 for (i = 0; i < width; i++) {
221 dstU[i] = (dstU[i] * 1799 + (4081085 << 4)) >> 11; // 1469
222 dstV[i] = (dstV[i] * 1799 + (4081085 << 4)) >> 11; // 1469
226 static void lumRangeToJpeg16_c(int16_t *_dst, int width)
229 int32_t *dst = (int32_t *) _dst;
230 for (i = 0; i < width; i++) {
231 dst[i] = ((int)(FFMIN(dst[i], 30189 << 4) * 4769U - (39057361 << 2))) >> 12;
235 static void lumRangeFromJpeg16_c(int16_t *_dst, int width)
238 int32_t *dst = (int32_t *) _dst;
239 for (i = 0; i < width; i++)
240 dst[i] = (dst[i]*(14071/4) + (33561947<<4)/4)>>12;
244 // *** horizontal scale Y line to temp buffer
245 static av_always_inline void hyscale(SwsContext *c, int16_t *dst, int dstWidth,
246 const uint8_t *src_in[4],
248 const int16_t *hLumFilter,
249 const int32_t *hLumFilterPos,
251 uint8_t *formatConvBuffer,
252 uint32_t *pal, int isAlpha)
254 void (*toYV12)(uint8_t *, const uint8_t *, const uint8_t *, const uint8_t *, int, uint32_t *) =
255 isAlpha ? c->alpToYV12 : c->lumToYV12;
256 void (*convertRange)(int16_t *, int) = isAlpha ? NULL : c->lumConvertRange;
257 const uint8_t *src = src_in[isAlpha ? 3 : 0];
260 toYV12(formatConvBuffer, src, src_in[1], src_in[2], srcW, pal);
261 src = formatConvBuffer;
262 } else if (c->readLumPlanar && !isAlpha) {
263 c->readLumPlanar(formatConvBuffer, src_in, srcW, c->input_rgb2yuv_table);
264 src = formatConvBuffer;
265 } else if (c->readAlpPlanar && isAlpha) {
266 c->readAlpPlanar(formatConvBuffer, src_in, srcW, NULL);
267 src = formatConvBuffer;
270 if (!c->hyscale_fast) {
271 c->hyScale(c, dst, dstWidth, src, hLumFilter,
272 hLumFilterPos, hLumFilterSize);
273 } else { // fast bilinear upscale / crap downscale
274 c->hyscale_fast(c, dst, dstWidth, src, srcW, xInc);
278 convertRange(dst, dstWidth);
281 static av_always_inline void hcscale(SwsContext *c, int16_t *dst1,
282 int16_t *dst2, int dstWidth,
283 const uint8_t *src_in[4],
285 const int16_t *hChrFilter,
286 const int32_t *hChrFilterPos,
288 uint8_t *formatConvBuffer, uint32_t *pal)
290 const uint8_t *src1 = src_in[1], *src2 = src_in[2];
292 uint8_t *buf2 = formatConvBuffer +
293 FFALIGN(srcW*2+78, 16);
294 c->chrToYV12(formatConvBuffer, buf2, src_in[0], src1, src2, srcW, pal);
295 src1= formatConvBuffer;
297 } else if (c->readChrPlanar) {
298 uint8_t *buf2 = formatConvBuffer +
299 FFALIGN(srcW*2+78, 16);
300 c->readChrPlanar(formatConvBuffer, buf2, src_in, srcW, c->input_rgb2yuv_table);
301 src1 = formatConvBuffer;
305 if (!c->hcscale_fast) {
306 c->hcScale(c, dst1, dstWidth, src1, hChrFilter, hChrFilterPos, hChrFilterSize);
307 c->hcScale(c, dst2, dstWidth, src2, hChrFilter, hChrFilterPos, hChrFilterSize);
308 } else { // fast bilinear upscale / crap downscale
309 c->hcscale_fast(c, dst1, dst2, dstWidth, src1, src2, srcW, xInc);
312 if (c->chrConvertRange)
313 c->chrConvertRange(dst1, dst2, dstWidth);
315 #endif /* NEW_FILTER */
317 #define DEBUG_SWSCALE_BUFFERS 0
318 #define DEBUG_BUFFERS(...) \
319 if (DEBUG_SWSCALE_BUFFERS) \
320 av_log(c, AV_LOG_DEBUG, __VA_ARGS__)
322 static int swscale(SwsContext *c, const uint8_t *src[],
323 int srcStride[], int srcSliceY,
324 int srcSliceH, uint8_t *dst[], int dstStride[])
326 /* load a few things into local vars to make the code more readable?
329 const int srcW = c->srcW;
331 const int dstW = c->dstW;
332 const int dstH = c->dstH;
334 const int chrDstW = c->chrDstW;
335 const int chrSrcW = c->chrSrcW;
336 const int lumXInc = c->lumXInc;
337 const int chrXInc = c->chrXInc;
339 const enum AVPixelFormat dstFormat = c->dstFormat;
340 const int flags = c->flags;
341 int32_t *vLumFilterPos = c->vLumFilterPos;
342 int32_t *vChrFilterPos = c->vChrFilterPos;
344 int32_t *hLumFilterPos = c->hLumFilterPos;
345 int32_t *hChrFilterPos = c->hChrFilterPos;
346 int16_t *hLumFilter = c->hLumFilter;
347 int16_t *hChrFilter = c->hChrFilter;
348 int32_t *lumMmxFilter = c->lumMmxFilter;
349 int32_t *chrMmxFilter = c->chrMmxFilter;
351 const int vLumFilterSize = c->vLumFilterSize;
352 const int vChrFilterSize = c->vChrFilterSize;
354 const int hLumFilterSize = c->hLumFilterSize;
355 const int hChrFilterSize = c->hChrFilterSize;
356 int16_t **lumPixBuf = c->lumPixBuf;
357 int16_t **chrUPixBuf = c->chrUPixBuf;
358 int16_t **chrVPixBuf = c->chrVPixBuf;
360 int16_t **alpPixBuf = c->alpPixBuf;
361 const int vLumBufSize = c->vLumBufSize;
362 const int vChrBufSize = c->vChrBufSize;
364 uint8_t *formatConvBuffer = c->formatConvBuffer;
365 uint32_t *pal = c->pal_yuv;
366 int perform_gamma = c->is_internal_gamma;
368 yuv2planar1_fn yuv2plane1 = c->yuv2plane1;
369 yuv2planarX_fn yuv2planeX = c->yuv2planeX;
370 yuv2interleavedX_fn yuv2nv12cX = c->yuv2nv12cX;
371 yuv2packed1_fn yuv2packed1 = c->yuv2packed1;
372 yuv2packed2_fn yuv2packed2 = c->yuv2packed2;
373 yuv2packedX_fn yuv2packedX = c->yuv2packedX;
374 yuv2anyX_fn yuv2anyX = c->yuv2anyX;
375 const int chrSrcSliceY = srcSliceY >> c->chrSrcVSubSample;
376 const int chrSrcSliceH = FF_CEIL_RSHIFT(srcSliceH, c->chrSrcVSubSample);
377 int should_dither = is9_OR_10BPS(c->srcFormat) ||
378 is16BPS(c->srcFormat);
381 /* vars which will change and which we need to store back in the context */
383 int lumBufIndex = c->lumBufIndex;
384 int chrBufIndex = c->chrBufIndex;
385 int lastInLumBuf = c->lastInLumBuf;
386 int lastInChrBuf = c->lastInChrBuf;
390 int lumEnd = c->descIndex[0];
391 int chrStart = lumEnd;
392 int chrEnd = c->descIndex[1];
394 int vEnd = c->numDesc;
395 SwsSlice *src_slice = &c->slice[lumStart];
396 SwsSlice *hout_slice = &c->slice[c->numSlice-2];
397 SwsSlice *vout_slice = &c->slice[c->numSlice-1];
398 SwsFilterDescriptor *desc = c->desc;
405 if (!usePal(c->srcFormat)) {
406 pal = c->input_rgb2yuv_table;
410 if (isPacked(c->srcFormat)) {
418 srcStride[3] = srcStride[0];
420 srcStride[1] <<= c->vChrDrop;
421 srcStride[2] <<= c->vChrDrop;
423 DEBUG_BUFFERS("swscale() %p[%d] %p[%d] %p[%d] %p[%d] -> %p[%d] %p[%d] %p[%d] %p[%d]\n",
424 src[0], srcStride[0], src[1], srcStride[1],
425 src[2], srcStride[2], src[3], srcStride[3],
426 dst[0], dstStride[0], dst[1], dstStride[1],
427 dst[2], dstStride[2], dst[3], dstStride[3]);
428 DEBUG_BUFFERS("srcSliceY: %d srcSliceH: %d dstY: %d dstH: %d\n",
429 srcSliceY, srcSliceH, dstY, dstH);
430 DEBUG_BUFFERS("vLumFilterSize: %d vLumBufSize: %d vChrFilterSize: %d vChrBufSize: %d\n",
431 vLumFilterSize, vLumBufSize, vChrFilterSize, vChrBufSize);
433 if (dstStride[0]&15 || dstStride[1]&15 ||
434 dstStride[2]&15 || dstStride[3]&15) {
435 static int warnedAlready = 0; // FIXME maybe move this into the context
436 if (flags & SWS_PRINT_INFO && !warnedAlready) {
437 av_log(c, AV_LOG_WARNING,
438 "Warning: dstStride is not aligned!\n"
439 " ->cannot do aligned memory accesses anymore\n");
444 if ( (uintptr_t)dst[0]&15 || (uintptr_t)dst[1]&15 || (uintptr_t)dst[2]&15
445 || (uintptr_t)src[0]&15 || (uintptr_t)src[1]&15 || (uintptr_t)src[2]&15
446 || dstStride[0]&15 || dstStride[1]&15 || dstStride[2]&15 || dstStride[3]&15
447 || srcStride[0]&15 || srcStride[1]&15 || srcStride[2]&15 || srcStride[3]&15
449 static int warnedAlready=0;
450 int cpu_flags = av_get_cpu_flags();
451 if (HAVE_MMXEXT && (cpu_flags & AV_CPU_FLAG_SSE2) && !warnedAlready){
452 av_log(c, AV_LOG_WARNING, "Warning: data is not aligned! This can lead to a speedloss\n");
457 /* Note the user might start scaling the picture in the middle so this
458 * will not get executed. This is not really intended but works
459 * currently, so people might do it. */
460 if (srcSliceY == 0) {
468 if (!should_dither) {
469 c->chrDither8 = c->lumDither8 = sws_pb_64;
474 ff_init_vscale_pfn(c, yuv2plane1, yuv2planeX, yuv2nv12cX,
475 yuv2packed1, yuv2packed2, yuv2packedX, yuv2anyX, c->use_mmx_vfilter);
477 ff_init_slice_from_src(src_slice, (uint8_t**)src, srcStride, c->srcW,
478 srcSliceY, srcSliceH, chrSrcSliceY, chrSrcSliceH, 1);
480 ff_init_slice_from_src(vout_slice, (uint8_t**)dst, dstStride, c->dstW,
481 dstY, dstH, dstY >> c->chrDstVSubSample,
482 FF_CEIL_RSHIFT(dstH, c->chrDstVSubSample), 0);
483 if (srcSliceY == 0) {
484 hout_slice->plane[0].sliceY = lastInLumBuf + 1;
485 hout_slice->plane[1].sliceY = lastInChrBuf + 1;
486 hout_slice->plane[2].sliceY = lastInChrBuf + 1;
487 hout_slice->plane[3].sliceY = lastInLumBuf + 1;
489 hout_slice->plane[0].sliceH =
490 hout_slice->plane[1].sliceH =
491 hout_slice->plane[2].sliceH =
492 hout_slice->plane[3].sliceH = 0;
493 hout_slice->width = dstW;
497 for (; dstY < dstH; dstY++) {
498 const int chrDstY = dstY >> c->chrDstVSubSample;
501 dst[0] + dstStride[0] * dstY,
502 dst[1] + dstStride[1] * chrDstY,
503 dst[2] + dstStride[2] * chrDstY,
504 (CONFIG_SWSCALE_ALPHA && alpPixBuf) ? dst[3] + dstStride[3] * dstY : NULL,
507 int use_mmx_vfilter= c->use_mmx_vfilter;
509 // First line needed as input
510 const int firstLumSrcY = FFMAX(1 - vLumFilterSize, vLumFilterPos[dstY]);
511 const int firstLumSrcY2 = FFMAX(1 - vLumFilterSize, vLumFilterPos[FFMIN(dstY | ((1 << c->chrDstVSubSample) - 1), dstH - 1)]);
512 // First line needed as input
513 const int firstChrSrcY = FFMAX(1 - vChrFilterSize, vChrFilterPos[chrDstY]);
515 // Last line needed as input
516 int lastLumSrcY = FFMIN(c->srcH, firstLumSrcY + vLumFilterSize) - 1;
517 int lastLumSrcY2 = FFMIN(c->srcH, firstLumSrcY2 + vLumFilterSize) - 1;
518 int lastChrSrcY = FFMIN(c->chrSrcH, firstChrSrcY + vChrFilterSize) - 1;
522 int posY, cPosY, firstPosY, lastPosY, firstCPosY, lastCPosY;
525 // handle holes (FAST_BILINEAR & weird filters)
526 if (firstLumSrcY > lastInLumBuf) {
528 hasLumHoles = lastInLumBuf != firstLumSrcY - 1;
530 hout_slice->plane[0].sliceY = firstLumSrcY;
531 hout_slice->plane[3].sliceY = firstLumSrcY;
532 hout_slice->plane[0].sliceH =
533 hout_slice->plane[3].sliceH = 0;
536 lastInLumBuf = firstLumSrcY - 1;
538 if (firstChrSrcY > lastInChrBuf) {
540 hasChrHoles = lastInChrBuf != firstChrSrcY - 1;
542 hout_slice->plane[1].sliceY = firstChrSrcY;
543 hout_slice->plane[2].sliceY = firstChrSrcY;
544 hout_slice->plane[1].sliceH =
545 hout_slice->plane[2].sliceH = 0;
548 lastInChrBuf = firstChrSrcY - 1;
550 av_assert0(firstLumSrcY >= lastInLumBuf - vLumBufSize + 1);
551 av_assert0(firstChrSrcY >= lastInChrBuf - vChrBufSize + 1);
553 DEBUG_BUFFERS("dstY: %d\n", dstY);
554 DEBUG_BUFFERS("\tfirstLumSrcY: %d lastLumSrcY: %d lastInLumBuf: %d\n",
555 firstLumSrcY, lastLumSrcY, lastInLumBuf);
556 DEBUG_BUFFERS("\tfirstChrSrcY: %d lastChrSrcY: %d lastInChrBuf: %d\n",
557 firstChrSrcY, lastChrSrcY, lastInChrBuf);
559 // Do we have enough lines in this slice to output the dstY line
560 enough_lines = lastLumSrcY2 < srcSliceY + srcSliceH &&
561 lastChrSrcY < FF_CEIL_RSHIFT(srcSliceY + srcSliceH, c->chrSrcVSubSample);
564 lastLumSrcY = srcSliceY + srcSliceH - 1;
565 lastChrSrcY = chrSrcSliceY + chrSrcSliceH - 1;
566 DEBUG_BUFFERS("buffering slice: lastLumSrcY %d lastChrSrcY %d\n",
567 lastLumSrcY, lastChrSrcY);
571 posY = hout_slice->plane[0].sliceY + hout_slice->plane[0].sliceH;
572 if (posY <= lastLumSrcY && !hasLumHoles) {
573 firstPosY = FFMAX(firstLumSrcY, posY);
574 lastPosY = FFMIN(lastLumSrcY + MAX_LINES_AHEAD, srcSliceY + srcSliceH - 1);
576 firstPosY = lastInLumBuf + 1;
577 lastPosY = lastLumSrcY;
580 cPosY = hout_slice->plane[1].sliceY + hout_slice->plane[1].sliceH;
581 if (cPosY <= lastChrSrcY && !hasChrHoles) {
582 firstCPosY = FFMAX(firstChrSrcY, cPosY);
583 lastCPosY = FFMIN(lastChrSrcY + MAX_LINES_AHEAD, FF_CEIL_RSHIFT(srcSliceY + srcSliceH, c->chrSrcVSubSample) - 1);
585 firstCPosY = lastInChrBuf + 1;
586 lastCPosY = lastChrSrcY;
589 ff_rotate_slice(hout_slice, lastPosY, lastCPosY);
591 if (posY < lastLumSrcY + 1) {
592 for (i = lumStart; i < lumEnd; ++i)
593 desc[i].process(c, &desc[i], firstPosY, lastPosY - firstPosY + 1);
596 lumBufIndex += lastLumSrcY - lastInLumBuf;
597 lastInLumBuf = lastLumSrcY;
599 if (cPosY < lastChrSrcY + 1) {
600 for (i = chrStart; i < chrEnd; ++i)
601 desc[i].process(c, &desc[i], firstCPosY, lastCPosY - firstCPosY + 1);
604 chrBufIndex += lastChrSrcY - lastInChrBuf;
605 lastInChrBuf = lastChrSrcY;
608 // Do horizontal scaling
609 while (lastInLumBuf < lastLumSrcY) {
610 const uint8_t *src1[4] = {
611 src[0] + (lastInLumBuf + 1 - srcSliceY) * srcStride[0],
612 src[1] + (lastInLumBuf + 1 - srcSliceY) * srcStride[1],
613 src[2] + (lastInLumBuf + 1 - srcSliceY) * srcStride[2],
614 src[3] + (lastInLumBuf + 1 - srcSliceY) * srcStride[3],
617 av_assert0(lumBufIndex < 2 * vLumBufSize);
618 av_assert0(lastInLumBuf + 1 - srcSliceY < srcSliceH);
619 av_assert0(lastInLumBuf + 1 - srcSliceY >= 0);
622 gamma_convert((uint8_t **)src1, srcW, c->inv_gamma);
624 hyscale(c, lumPixBuf[lumBufIndex], dstW, src1, srcW, lumXInc,
625 hLumFilter, hLumFilterPos, hLumFilterSize,
626 formatConvBuffer, pal, 0);
627 if (CONFIG_SWSCALE_ALPHA && alpPixBuf)
628 hyscale(c, alpPixBuf[lumBufIndex], dstW, src1, srcW,
629 lumXInc, hLumFilter, hLumFilterPos, hLumFilterSize,
630 formatConvBuffer, pal, 1);
632 DEBUG_BUFFERS("\t\tlumBufIndex %d: lastInLumBuf: %d\n",
633 lumBufIndex, lastInLumBuf);
635 while (lastInChrBuf < lastChrSrcY) {
636 const uint8_t *src1[4] = {
637 src[0] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[0],
638 src[1] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[1],
639 src[2] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[2],
640 src[3] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[3],
643 av_assert0(chrBufIndex < 2 * vChrBufSize);
644 av_assert0(lastInChrBuf + 1 - chrSrcSliceY < (chrSrcSliceH));
645 av_assert0(lastInChrBuf + 1 - chrSrcSliceY >= 0);
646 // FIXME replace parameters through context struct (some at least)
648 if (c->needs_hcscale)
649 hcscale(c, chrUPixBuf[chrBufIndex], chrVPixBuf[chrBufIndex],
650 chrDstW, src1, chrSrcW, chrXInc,
651 hChrFilter, hChrFilterPos, hChrFilterSize,
652 formatConvBuffer, pal);
654 DEBUG_BUFFERS("\t\tchrBufIndex %d: lastInChrBuf: %d\n",
655 chrBufIndex, lastInChrBuf);
658 // wrap buf index around to stay inside the ring buffer
659 if (lumBufIndex >= vLumBufSize)
660 lumBufIndex -= vLumBufSize;
661 if (chrBufIndex >= vChrBufSize)
662 chrBufIndex -= vChrBufSize;
664 break; // we can't output a dstY line so let's try with the next slice
667 ff_updateMMXDitherTables(c, dstY, lumBufIndex, chrBufIndex,
668 lastInLumBuf, lastInChrBuf);
671 c->chrDither8 = ff_dither_8x8_128[chrDstY & 7];
672 c->lumDither8 = ff_dither_8x8_128[dstY & 7];
674 if (dstY >= dstH - 2) {
675 /* hmm looks like we can't use MMX here without overwriting
676 * this array's tail */
677 ff_sws_init_output_funcs(c, &yuv2plane1, &yuv2planeX, &yuv2nv12cX,
678 &yuv2packed1, &yuv2packed2, &yuv2packedX, &yuv2anyX);
680 ff_init_vscale_pfn(c, yuv2plane1, yuv2planeX, yuv2nv12cX,
681 yuv2packed1, yuv2packed2, yuv2packedX, yuv2anyX, use_mmx_vfilter);
686 for (i = vStart; i < vEnd; ++i)
687 desc[i].process(c, &desc[i], dstY, 1);
689 const int16_t **lumSrcPtr = (const int16_t **)(void*) lumPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize;
690 const int16_t **chrUSrcPtr = (const int16_t **)(void*) chrUPixBuf + chrBufIndex + firstChrSrcY - lastInChrBuf + vChrBufSize;
691 const int16_t **chrVSrcPtr = (const int16_t **)(void*) chrVPixBuf + chrBufIndex + firstChrSrcY - lastInChrBuf + vChrBufSize;
692 const int16_t **alpSrcPtr = (CONFIG_SWSCALE_ALPHA && alpPixBuf) ?
693 (const int16_t **)(void*) alpPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize : NULL;
694 int16_t *vLumFilter = c->vLumFilter;
695 int16_t *vChrFilter = c->vChrFilter;
697 if (isPlanarYUV(dstFormat) ||
698 (isGray(dstFormat) && !isALPHA(dstFormat))) { // YV12 like
699 const int chrSkipMask = (1 << c->chrDstVSubSample) - 1;
701 vLumFilter += dstY * vLumFilterSize;
702 vChrFilter += chrDstY * vChrFilterSize;
704 // av_assert0(use_mmx_vfilter != (
705 // yuv2planeX == yuv2planeX_10BE_c
706 // || yuv2planeX == yuv2planeX_10LE_c
707 // || yuv2planeX == yuv2planeX_9BE_c
708 // || yuv2planeX == yuv2planeX_9LE_c
709 // || yuv2planeX == yuv2planeX_16BE_c
710 // || yuv2planeX == yuv2planeX_16LE_c
711 // || yuv2planeX == yuv2planeX_8_c) || !ARCH_X86);
714 vLumFilter= (int16_t *)c->lumMmxFilter;
715 vChrFilter= (int16_t *)c->chrMmxFilter;
718 if (vLumFilterSize == 1) {
719 yuv2plane1(lumSrcPtr[0], dest[0], dstW, c->lumDither8, 0);
721 yuv2planeX(vLumFilter, vLumFilterSize,
723 dstW, c->lumDither8, 0);
726 if (!((dstY & chrSkipMask) || isGray(dstFormat))) {
728 yuv2nv12cX(c, vChrFilter,
729 vChrFilterSize, chrUSrcPtr, chrVSrcPtr,
731 } else if (vChrFilterSize == 1) {
732 yuv2plane1(chrUSrcPtr[0], dest[1], chrDstW, c->chrDither8, 0);
733 yuv2plane1(chrVSrcPtr[0], dest[2], chrDstW, c->chrDither8, 3);
735 yuv2planeX(vChrFilter,
736 vChrFilterSize, chrUSrcPtr, dest[1],
737 chrDstW, c->chrDither8, 0);
738 yuv2planeX(vChrFilter,
739 vChrFilterSize, chrVSrcPtr, dest[2],
740 chrDstW, c->chrDither8, use_mmx_vfilter ? (c->uv_offx2 >> 1) : 3);
744 if (CONFIG_SWSCALE_ALPHA && alpPixBuf) {
746 vLumFilter= (int16_t *)c->alpMmxFilter;
748 if (vLumFilterSize == 1) {
749 yuv2plane1(alpSrcPtr[0], dest[3], dstW,
752 yuv2planeX(vLumFilter,
753 vLumFilterSize, alpSrcPtr, dest[3],
754 dstW, c->lumDither8, 0);
757 } else if (yuv2packedX) {
758 av_assert1(lumSrcPtr + vLumFilterSize - 1 < (const int16_t **)lumPixBuf + vLumBufSize * 2);
759 av_assert1(chrUSrcPtr + vChrFilterSize - 1 < (const int16_t **)chrUPixBuf + vChrBufSize * 2);
760 if (c->yuv2packed1 && vLumFilterSize == 1 &&
761 vChrFilterSize <= 2) { // unscaled RGB
762 int chrAlpha = vChrFilterSize == 1 ? 0 : vChrFilter[2 * dstY + 1];
763 yuv2packed1(c, *lumSrcPtr, chrUSrcPtr, chrVSrcPtr,
764 alpPixBuf ? *alpSrcPtr : NULL,
765 dest[0], dstW, chrAlpha, dstY);
766 } else if (c->yuv2packed2 && vLumFilterSize == 2 &&
767 vChrFilterSize == 2) { // bilinear upscale RGB
768 int lumAlpha = vLumFilter[2 * dstY + 1];
769 int chrAlpha = vChrFilter[2 * dstY + 1];
771 lumMmxFilter[3] = vLumFilter[2 * dstY] * 0x10001;
773 chrMmxFilter[3] = vChrFilter[2 * chrDstY] * 0x10001;
774 yuv2packed2(c, lumSrcPtr, chrUSrcPtr, chrVSrcPtr,
775 alpPixBuf ? alpSrcPtr : NULL,
776 dest[0], dstW, lumAlpha, chrAlpha, dstY);
777 } else { // general RGB
778 yuv2packedX(c, vLumFilter + dstY * vLumFilterSize,
779 lumSrcPtr, vLumFilterSize,
780 vChrFilter + dstY * vChrFilterSize,
781 chrUSrcPtr, chrVSrcPtr, vChrFilterSize,
782 alpSrcPtr, dest[0], dstW, dstY);
785 av_assert1(!yuv2packed1 && !yuv2packed2);
786 yuv2anyX(c, vLumFilter + dstY * vLumFilterSize,
787 lumSrcPtr, vLumFilterSize,
788 vChrFilter + dstY * vChrFilterSize,
789 chrUSrcPtr, chrVSrcPtr, vChrFilterSize,
790 alpSrcPtr, dest, dstW, dstY);
793 gamma_convert(dest, dstW, c->gamma);
797 if (isPlanar(dstFormat) && isALPHA(dstFormat) && !alpPixBuf) {
799 int height = dstY - lastDstY;
801 if (is16BPS(dstFormat) || isNBPS(dstFormat)) {
802 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(dstFormat);
803 fillPlane16(dst[3], dstStride[3], length, height, lastDstY,
804 1, desc->comp[3].depth,
807 fillPlane(dst[3], dstStride[3], length, height, lastDstY, 255);
810 #if HAVE_MMXEXT_INLINE
811 if (av_get_cpu_flags() & AV_CPU_FLAG_MMXEXT)
812 __asm__ volatile ("sfence" ::: "memory");
816 /* store changed local vars back in the context */
818 c->lumBufIndex = lumBufIndex;
819 c->chrBufIndex = chrBufIndex;
820 c->lastInLumBuf = lastInLumBuf;
821 c->lastInChrBuf = lastInChrBuf;
823 return dstY - lastDstY;
826 av_cold void ff_sws_init_range_convert(SwsContext *c)
828 c->lumConvertRange = NULL;
829 c->chrConvertRange = NULL;
830 if (c->srcRange != c->dstRange && !isAnyRGB(c->dstFormat)) {
831 if (c->dstBpc <= 14) {
833 c->lumConvertRange = lumRangeFromJpeg_c;
834 c->chrConvertRange = chrRangeFromJpeg_c;
836 c->lumConvertRange = lumRangeToJpeg_c;
837 c->chrConvertRange = chrRangeToJpeg_c;
841 c->lumConvertRange = lumRangeFromJpeg16_c;
842 c->chrConvertRange = chrRangeFromJpeg16_c;
844 c->lumConvertRange = lumRangeToJpeg16_c;
845 c->chrConvertRange = chrRangeToJpeg16_c;
851 static av_cold void sws_init_swscale(SwsContext *c)
853 enum AVPixelFormat srcFormat = c->srcFormat;
855 ff_sws_init_output_funcs(c, &c->yuv2plane1, &c->yuv2planeX,
856 &c->yuv2nv12cX, &c->yuv2packed1,
857 &c->yuv2packed2, &c->yuv2packedX, &c->yuv2anyX);
859 ff_sws_init_input_funcs(c);
862 if (c->srcBpc == 8) {
863 if (c->dstBpc <= 14) {
864 c->hyScale = c->hcScale = hScale8To15_c;
865 if (c->flags & SWS_FAST_BILINEAR) {
866 c->hyscale_fast = ff_hyscale_fast_c;
867 c->hcscale_fast = ff_hcscale_fast_c;
870 c->hyScale = c->hcScale = hScale8To19_c;
873 c->hyScale = c->hcScale = c->dstBpc > 14 ? hScale16To19_c
877 ff_sws_init_range_convert(c);
879 if (!(isGray(srcFormat) || isGray(c->dstFormat) ||
880 srcFormat == AV_PIX_FMT_MONOBLACK || srcFormat == AV_PIX_FMT_MONOWHITE))
881 c->needs_hcscale = 1;
884 SwsFunc ff_getSwsFunc(SwsContext *c)
889 ff_sws_init_swscale_ppc(c);
891 ff_sws_init_swscale_x86(c);
896 static void reset_ptr(const uint8_t *src[], enum AVPixelFormat format)
898 if (!isALPHA(format))
900 if (!isPlanar(format)) {
901 src[3] = src[2] = NULL;
908 static int check_image_pointers(const uint8_t * const data[4], enum AVPixelFormat pix_fmt,
909 const int linesizes[4])
911 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
916 for (i = 0; i < 4; i++) {
917 int plane = desc->comp[i].plane;
918 if (!data[plane] || !linesizes[plane])
925 static void xyz12Torgb48(struct SwsContext *c, uint16_t *dst,
926 const uint16_t *src, int stride, int h)
929 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(c->srcFormat);
931 for (yp=0; yp<h; yp++) {
932 for (xp=0; xp+2<stride; xp+=3) {
933 int x, y, z, r, g, b;
935 if (desc->flags & AV_PIX_FMT_FLAG_BE) {
936 x = AV_RB16(src + xp + 0);
937 y = AV_RB16(src + xp + 1);
938 z = AV_RB16(src + xp + 2);
940 x = AV_RL16(src + xp + 0);
941 y = AV_RL16(src + xp + 1);
942 z = AV_RL16(src + xp + 2);
945 x = c->xyzgamma[x>>4];
946 y = c->xyzgamma[y>>4];
947 z = c->xyzgamma[z>>4];
949 // convert from XYZlinear to sRGBlinear
950 r = c->xyz2rgb_matrix[0][0] * x +
951 c->xyz2rgb_matrix[0][1] * y +
952 c->xyz2rgb_matrix[0][2] * z >> 12;
953 g = c->xyz2rgb_matrix[1][0] * x +
954 c->xyz2rgb_matrix[1][1] * y +
955 c->xyz2rgb_matrix[1][2] * z >> 12;
956 b = c->xyz2rgb_matrix[2][0] * x +
957 c->xyz2rgb_matrix[2][1] * y +
958 c->xyz2rgb_matrix[2][2] * z >> 12;
960 // limit values to 12-bit depth
961 r = av_clip_uintp2(r, 12);
962 g = av_clip_uintp2(g, 12);
963 b = av_clip_uintp2(b, 12);
965 // convert from sRGBlinear to RGB and scale from 12bit to 16bit
966 if (desc->flags & AV_PIX_FMT_FLAG_BE) {
967 AV_WB16(dst + xp + 0, c->rgbgamma[r] << 4);
968 AV_WB16(dst + xp + 1, c->rgbgamma[g] << 4);
969 AV_WB16(dst + xp + 2, c->rgbgamma[b] << 4);
971 AV_WL16(dst + xp + 0, c->rgbgamma[r] << 4);
972 AV_WL16(dst + xp + 1, c->rgbgamma[g] << 4);
973 AV_WL16(dst + xp + 2, c->rgbgamma[b] << 4);
981 static void rgb48Toxyz12(struct SwsContext *c, uint16_t *dst,
982 const uint16_t *src, int stride, int h)
985 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(c->dstFormat);
987 for (yp=0; yp<h; yp++) {
988 for (xp=0; xp+2<stride; xp+=3) {
989 int x, y, z, r, g, b;
991 if (desc->flags & AV_PIX_FMT_FLAG_BE) {
992 r = AV_RB16(src + xp + 0);
993 g = AV_RB16(src + xp + 1);
994 b = AV_RB16(src + xp + 2);
996 r = AV_RL16(src + xp + 0);
997 g = AV_RL16(src + xp + 1);
998 b = AV_RL16(src + xp + 2);
1001 r = c->rgbgammainv[r>>4];
1002 g = c->rgbgammainv[g>>4];
1003 b = c->rgbgammainv[b>>4];
1005 // convert from sRGBlinear to XYZlinear
1006 x = c->rgb2xyz_matrix[0][0] * r +
1007 c->rgb2xyz_matrix[0][1] * g +
1008 c->rgb2xyz_matrix[0][2] * b >> 12;
1009 y = c->rgb2xyz_matrix[1][0] * r +
1010 c->rgb2xyz_matrix[1][1] * g +
1011 c->rgb2xyz_matrix[1][2] * b >> 12;
1012 z = c->rgb2xyz_matrix[2][0] * r +
1013 c->rgb2xyz_matrix[2][1] * g +
1014 c->rgb2xyz_matrix[2][2] * b >> 12;
1016 // limit values to 12-bit depth
1017 x = av_clip_uintp2(x, 12);
1018 y = av_clip_uintp2(y, 12);
1019 z = av_clip_uintp2(z, 12);
1021 // convert from XYZlinear to X'Y'Z' and scale from 12bit to 16bit
1022 if (desc->flags & AV_PIX_FMT_FLAG_BE) {
1023 AV_WB16(dst + xp + 0, c->xyzgammainv[x] << 4);
1024 AV_WB16(dst + xp + 1, c->xyzgammainv[y] << 4);
1025 AV_WB16(dst + xp + 2, c->xyzgammainv[z] << 4);
1027 AV_WL16(dst + xp + 0, c->xyzgammainv[x] << 4);
1028 AV_WL16(dst + xp + 1, c->xyzgammainv[y] << 4);
1029 AV_WL16(dst + xp + 2, c->xyzgammainv[z] << 4);
1038 * swscale wrapper, so we don't need to export the SwsContext.
1039 * Assumes planar YUV to be in YUV order instead of YVU.
1041 int attribute_align_arg sws_scale(struct SwsContext *c,
1042 const uint8_t * const srcSlice[],
1043 const int srcStride[], int srcSliceY,
1044 int srcSliceH, uint8_t *const dst[],
1045 const int dstStride[])
1048 const uint8_t *src2[4];
1050 uint8_t *rgb0_tmp = NULL;
1052 if (!srcStride || !dstStride || !dst || !srcSlice) {
1053 av_log(c, AV_LOG_ERROR, "One of the input parameters to sws_scale() is NULL, please check the calling code\n");
1057 if (c->gamma_flag && c->cascaded_context[0]) {
1060 ret = sws_scale(c->cascaded_context[0],
1061 srcSlice, srcStride, srcSliceY, srcSliceH,
1062 c->cascaded_tmp, c->cascaded_tmpStride);
1067 if (c->cascaded_context[2])
1068 ret = sws_scale(c->cascaded_context[1], (const uint8_t * const *)c->cascaded_tmp, c->cascaded_tmpStride, srcSliceY, srcSliceH, c->cascaded1_tmp, c->cascaded1_tmpStride);
1070 ret = sws_scale(c->cascaded_context[1], (const uint8_t * const *)c->cascaded_tmp, c->cascaded_tmpStride, srcSliceY, srcSliceH, dst, dstStride);
1075 if (c->cascaded_context[2]) {
1076 ret = sws_scale(c->cascaded_context[2],
1077 (const uint8_t * const *)c->cascaded1_tmp, c->cascaded1_tmpStride, c->cascaded_context[1]->dstY - ret, c->cascaded_context[1]->dstY,
1083 if (c->cascaded_context[0] && srcSliceY == 0 && srcSliceH == c->cascaded_context[0]->srcH) {
1084 ret = sws_scale(c->cascaded_context[0],
1085 srcSlice, srcStride, srcSliceY, srcSliceH,
1086 c->cascaded_tmp, c->cascaded_tmpStride);
1089 ret = sws_scale(c->cascaded_context[1],
1090 (const uint8_t * const * )c->cascaded_tmp, c->cascaded_tmpStride, 0, c->cascaded_context[0]->dstH,
1095 memcpy(src2, srcSlice, sizeof(src2));
1096 memcpy(dst2, dst, sizeof(dst2));
1098 // do not mess up sliceDir if we have a "trailing" 0-size slice
1102 if (!check_image_pointers(srcSlice, c->srcFormat, srcStride)) {
1103 av_log(c, AV_LOG_ERROR, "bad src image pointers\n");
1106 if (!check_image_pointers((const uint8_t* const*)dst, c->dstFormat, dstStride)) {
1107 av_log(c, AV_LOG_ERROR, "bad dst image pointers\n");
1111 if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
1112 av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");
1115 if (c->sliceDir == 0) {
1116 if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;
1119 if (usePal(c->srcFormat)) {
1120 for (i = 0; i < 256; i++) {
1121 int r, g, b, y, u, v, a = 0xff;
1122 if (c->srcFormat == AV_PIX_FMT_PAL8) {
1123 uint32_t p = ((const uint32_t *)(srcSlice[1]))[i];
1124 a = (p >> 24) & 0xFF;
1125 r = (p >> 16) & 0xFF;
1126 g = (p >> 8) & 0xFF;
1128 } else if (c->srcFormat == AV_PIX_FMT_RGB8) {
1129 r = ( i >> 5 ) * 36;
1130 g = ((i >> 2) & 7) * 36;
1132 } else if (c->srcFormat == AV_PIX_FMT_BGR8) {
1133 b = ( i >> 6 ) * 85;
1134 g = ((i >> 3) & 7) * 36;
1136 } else if (c->srcFormat == AV_PIX_FMT_RGB4_BYTE) {
1137 r = ( i >> 3 ) * 255;
1138 g = ((i >> 1) & 3) * 85;
1140 } else if (c->srcFormat == AV_PIX_FMT_GRAY8 || c->srcFormat == AV_PIX_FMT_GRAY8A) {
1143 av_assert1(c->srcFormat == AV_PIX_FMT_BGR4_BYTE);
1144 b = ( i >> 3 ) * 255;
1145 g = ((i >> 1) & 3) * 85;
1148 #define RGB2YUV_SHIFT 15
1149 #define BY ( (int) (0.114 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
1150 #define BV (-(int) (0.081 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
1151 #define BU ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
1152 #define GY ( (int) (0.587 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
1153 #define GV (-(int) (0.419 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
1154 #define GU (-(int) (0.331 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
1155 #define RY ( (int) (0.299 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
1156 #define RV ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
1157 #define RU (-(int) (0.169 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
1159 y = av_clip_uint8((RY * r + GY * g + BY * b + ( 33 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
1160 u = av_clip_uint8((RU * r + GU * g + BU * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
1161 v = av_clip_uint8((RV * r + GV * g + BV * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
1162 c->pal_yuv[i]= y + (u<<8) + (v<<16) + ((unsigned)a<<24);
1164 switch (c->dstFormat) {
1165 case AV_PIX_FMT_BGR32:
1167 case AV_PIX_FMT_RGB24:
1169 c->pal_rgb[i]= r + (g<<8) + (b<<16) + ((unsigned)a<<24);
1171 case AV_PIX_FMT_BGR32_1:
1173 case AV_PIX_FMT_BGR24:
1175 c->pal_rgb[i]= a + (r<<8) + (g<<16) + ((unsigned)b<<24);
1177 case AV_PIX_FMT_RGB32_1:
1179 case AV_PIX_FMT_RGB24:
1181 c->pal_rgb[i]= a + (b<<8) + (g<<16) + ((unsigned)r<<24);
1183 case AV_PIX_FMT_RGB32:
1185 case AV_PIX_FMT_BGR24:
1188 c->pal_rgb[i]= b + (g<<8) + (r<<16) + ((unsigned)a<<24);
1193 if (c->src0Alpha && !c->dst0Alpha && isALPHA(c->dstFormat)) {
1196 rgb0_tmp = av_malloc(FFABS(srcStride[0]) * srcSliceH + 32);
1198 return AVERROR(ENOMEM);
1200 base = srcStride[0] < 0 ? rgb0_tmp - srcStride[0] * (srcSliceH-1) : rgb0_tmp;
1201 for (y=0; y<srcSliceH; y++){
1202 memcpy(base + srcStride[0]*y, src2[0] + srcStride[0]*y, 4*c->srcW);
1203 for (x=c->src0Alpha-1; x<4*c->srcW; x+=4) {
1204 base[ srcStride[0]*y + x] = 0xFF;
1210 if (c->srcXYZ && !(c->dstXYZ && c->srcW==c->dstW && c->srcH==c->dstH)) {
1212 rgb0_tmp = av_malloc(FFABS(srcStride[0]) * srcSliceH + 32);
1214 return AVERROR(ENOMEM);
1216 base = srcStride[0] < 0 ? rgb0_tmp - srcStride[0] * (srcSliceH-1) : rgb0_tmp;
1218 xyz12Torgb48(c, (uint16_t*)base, (const uint16_t*)src2[0], srcStride[0]/2, srcSliceH);
1222 if (!srcSliceY && (c->flags & SWS_BITEXACT) && c->dither == SWS_DITHER_ED && c->dither_error[0])
1223 for (i = 0; i < 4; i++)
1224 memset(c->dither_error[i], 0, sizeof(c->dither_error[0][0]) * (c->dstW+2));
1227 // copy strides, so they can safely be modified
1228 if (c->sliceDir == 1) {
1229 // slices go from top to bottom
1230 int srcStride2[4] = { srcStride[0], srcStride[1], srcStride[2],
1232 int dstStride2[4] = { dstStride[0], dstStride[1], dstStride[2],
1235 reset_ptr(src2, c->srcFormat);
1236 reset_ptr((void*)dst2, c->dstFormat);
1238 /* reset slice direction at end of frame */
1239 if (srcSliceY + srcSliceH == c->srcH)
1242 ret = c->swscale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2,
1245 // slices go from bottom to top => we flip the image internally
1246 int srcStride2[4] = { -srcStride[0], -srcStride[1], -srcStride[2],
1248 int dstStride2[4] = { -dstStride[0], -dstStride[1], -dstStride[2],
1251 src2[0] += (srcSliceH - 1) * srcStride[0];
1252 if (!usePal(c->srcFormat))
1253 src2[1] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[1];
1254 src2[2] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[2];
1255 src2[3] += (srcSliceH - 1) * srcStride[3];
1256 dst2[0] += ( c->dstH - 1) * dstStride[0];
1257 dst2[1] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[1];
1258 dst2[2] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[2];
1259 dst2[3] += ( c->dstH - 1) * dstStride[3];
1261 reset_ptr(src2, c->srcFormat);
1262 reset_ptr((void*)dst2, c->dstFormat);
1264 /* reset slice direction at end of frame */
1268 ret = c->swscale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH,
1269 srcSliceH, dst2, dstStride2);
1273 if (c->dstXYZ && !(c->srcXYZ && c->srcW==c->dstW && c->srcH==c->dstH)) {
1274 /* replace on the same data */
1275 rgb48Toxyz12(c, (uint16_t*)dst2[0], (const uint16_t*)dst2[0], dstStride[0]/2, ret);