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
55 static void gamma_convert(uint8_t * src[], int width, uint16_t *gamma)
58 uint16_t *src1 = (uint16_t*)src[0];
60 for (i = 0; i < width; ++i) {
61 uint16_t r = AV_RL16(src1 + i*4 + 0);
62 uint16_t g = AV_RL16(src1 + i*4 + 1);
63 uint16_t b = AV_RL16(src1 + i*4 + 2);
65 AV_WL16(src1 + i*4 + 0, gamma[r]);
66 AV_WL16(src1 + i*4 + 1, gamma[g]);
67 AV_WL16(src1 + i*4 + 2, gamma[b]);
71 static av_always_inline void fillPlane(uint8_t *plane, int stride, int width,
72 int height, int y, uint8_t val)
75 uint8_t *ptr = plane + stride * y;
76 for (i = 0; i < height; i++) {
77 memset(ptr, val, width);
82 static void hScale16To19_c(SwsContext *c, int16_t *_dst, int dstW,
83 const uint8_t *_src, const int16_t *filter,
84 const int32_t *filterPos, int filterSize)
86 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(c->srcFormat);
88 int32_t *dst = (int32_t *) _dst;
89 const uint16_t *src = (const uint16_t *) _src;
90 int bits = desc->comp[0].depth_minus1;
93 if((isAnyRGB(c->srcFormat) || c->srcFormat==AV_PIX_FMT_PAL8) && desc->comp[0].depth_minus1<15)
96 for (i = 0; i < dstW; i++) {
98 int srcPos = filterPos[i];
101 for (j = 0; j < filterSize; j++) {
102 val += src[srcPos + j] * filter[filterSize * i + j];
104 // filter=14 bit, input=16 bit, output=30 bit, >> 11 makes 19 bit
105 dst[i] = FFMIN(val >> sh, (1 << 19) - 1);
109 static void hScale16To15_c(SwsContext *c, int16_t *dst, int dstW,
110 const uint8_t *_src, const int16_t *filter,
111 const int32_t *filterPos, int filterSize)
113 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(c->srcFormat);
115 const uint16_t *src = (const uint16_t *) _src;
116 int sh = desc->comp[0].depth_minus1;
119 sh= isAnyRGB(c->srcFormat) || c->srcFormat==AV_PIX_FMT_PAL8 ? 13 : desc->comp[0].depth_minus1;
121 for (i = 0; i < dstW; i++) {
123 int srcPos = filterPos[i];
126 for (j = 0; j < filterSize; j++) {
127 val += src[srcPos + j] * filter[filterSize * i + j];
129 // filter=14 bit, input=16 bit, output=30 bit, >> 15 makes 15 bit
130 dst[i] = FFMIN(val >> sh, (1 << 15) - 1);
134 // bilinear / bicubic scaling
135 static void hScale8To15_c(SwsContext *c, int16_t *dst, int dstW,
136 const uint8_t *src, const int16_t *filter,
137 const int32_t *filterPos, int filterSize)
140 for (i = 0; i < dstW; i++) {
142 int srcPos = filterPos[i];
144 for (j = 0; j < filterSize; j++) {
145 val += ((int)src[srcPos + j]) * filter[filterSize * i + j];
147 dst[i] = FFMIN(val >> 7, (1 << 15) - 1); // the cubic equation does overflow ...
151 static void hScale8To19_c(SwsContext *c, int16_t *_dst, int dstW,
152 const uint8_t *src, const int16_t *filter,
153 const int32_t *filterPos, int filterSize)
156 int32_t *dst = (int32_t *) _dst;
157 for (i = 0; i < dstW; i++) {
159 int srcPos = filterPos[i];
161 for (j = 0; j < filterSize; j++) {
162 val += ((int)src[srcPos + j]) * filter[filterSize * i + j];
164 dst[i] = FFMIN(val >> 3, (1 << 19) - 1); // the cubic equation does overflow ...
168 // FIXME all pal and rgb srcFormats could do this conversion as well
169 // FIXME all scalers more complex than bilinear could do half of this transform
170 static void chrRangeToJpeg_c(int16_t *dstU, int16_t *dstV, int width)
173 for (i = 0; i < width; i++) {
174 dstU[i] = (FFMIN(dstU[i], 30775) * 4663 - 9289992) >> 12; // -264
175 dstV[i] = (FFMIN(dstV[i], 30775) * 4663 - 9289992) >> 12; // -264
179 static void chrRangeFromJpeg_c(int16_t *dstU, int16_t *dstV, int width)
182 for (i = 0; i < width; i++) {
183 dstU[i] = (dstU[i] * 1799 + 4081085) >> 11; // 1469
184 dstV[i] = (dstV[i] * 1799 + 4081085) >> 11; // 1469
188 static void lumRangeToJpeg_c(int16_t *dst, int width)
191 for (i = 0; i < width; i++)
192 dst[i] = (FFMIN(dst[i], 30189) * 19077 - 39057361) >> 14;
195 static void lumRangeFromJpeg_c(int16_t *dst, int width)
198 for (i = 0; i < width; i++)
199 dst[i] = (dst[i] * 14071 + 33561947) >> 14;
202 static void chrRangeToJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width)
205 int32_t *dstU = (int32_t *) _dstU;
206 int32_t *dstV = (int32_t *) _dstV;
207 for (i = 0; i < width; i++) {
208 dstU[i] = (FFMIN(dstU[i], 30775 << 4) * 4663 - (9289992 << 4)) >> 12; // -264
209 dstV[i] = (FFMIN(dstV[i], 30775 << 4) * 4663 - (9289992 << 4)) >> 12; // -264
213 static void chrRangeFromJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width)
216 int32_t *dstU = (int32_t *) _dstU;
217 int32_t *dstV = (int32_t *) _dstV;
218 for (i = 0; i < width; i++) {
219 dstU[i] = (dstU[i] * 1799 + (4081085 << 4)) >> 11; // 1469
220 dstV[i] = (dstV[i] * 1799 + (4081085 << 4)) >> 11; // 1469
224 static void lumRangeToJpeg16_c(int16_t *_dst, int width)
227 int32_t *dst = (int32_t *) _dst;
228 for (i = 0; i < width; i++) {
229 dst[i] = ((int)(FFMIN(dst[i], 30189 << 4) * 4769U - (39057361 << 2))) >> 12;
233 static void lumRangeFromJpeg16_c(int16_t *_dst, int width)
236 int32_t *dst = (int32_t *) _dst;
237 for (i = 0; i < width; i++)
238 dst[i] = (dst[i]*(14071/4) + (33561947<<4)/4)>>12;
241 // *** horizontal scale Y line to temp buffer
242 static av_always_inline void hyscale(SwsContext *c, int16_t *dst, int dstWidth,
243 const uint8_t *src_in[4],
245 const int16_t *hLumFilter,
246 const int32_t *hLumFilterPos,
248 uint8_t *formatConvBuffer,
249 uint32_t *pal, int isAlpha)
251 void (*toYV12)(uint8_t *, const uint8_t *, const uint8_t *, const uint8_t *, int, uint32_t *) =
252 isAlpha ? c->alpToYV12 : c->lumToYV12;
253 void (*convertRange)(int16_t *, int) = isAlpha ? NULL : c->lumConvertRange;
254 const uint8_t *src = src_in[isAlpha ? 3 : 0];
257 toYV12(formatConvBuffer, src, src_in[1], src_in[2], srcW, pal);
258 src = formatConvBuffer;
259 } else if (c->readLumPlanar && !isAlpha) {
260 c->readLumPlanar(formatConvBuffer, src_in, srcW, c->input_rgb2yuv_table);
261 src = formatConvBuffer;
262 } else if (c->readAlpPlanar && isAlpha) {
263 c->readAlpPlanar(formatConvBuffer, src_in, srcW, NULL);
264 src = formatConvBuffer;
267 if (!c->hyscale_fast) {
268 c->hyScale(c, dst, dstWidth, src, hLumFilter,
269 hLumFilterPos, hLumFilterSize);
270 } else { // fast bilinear upscale / crap downscale
271 c->hyscale_fast(c, dst, dstWidth, src, srcW, xInc);
275 convertRange(dst, dstWidth);
278 static av_always_inline void hcscale(SwsContext *c, int16_t *dst1,
279 int16_t *dst2, int dstWidth,
280 const uint8_t *src_in[4],
282 const int16_t *hChrFilter,
283 const int32_t *hChrFilterPos,
285 uint8_t *formatConvBuffer, uint32_t *pal)
287 const uint8_t *src1 = src_in[1], *src2 = src_in[2];
289 uint8_t *buf2 = formatConvBuffer +
290 FFALIGN(srcW*2+78, 16);
291 c->chrToYV12(formatConvBuffer, buf2, src_in[0], src1, src2, srcW, pal);
292 src1= formatConvBuffer;
294 } else if (c->readChrPlanar) {
295 uint8_t *buf2 = formatConvBuffer +
296 FFALIGN(srcW*2+78, 16);
297 c->readChrPlanar(formatConvBuffer, buf2, src_in, srcW, c->input_rgb2yuv_table);
298 src1 = formatConvBuffer;
302 if (!c->hcscale_fast) {
303 c->hcScale(c, dst1, dstWidth, src1, hChrFilter, hChrFilterPos, hChrFilterSize);
304 c->hcScale(c, dst2, dstWidth, src2, hChrFilter, hChrFilterPos, hChrFilterSize);
305 } else { // fast bilinear upscale / crap downscale
306 c->hcscale_fast(c, dst1, dst2, dstWidth, src1, src2, srcW, xInc);
309 if (c->chrConvertRange)
310 c->chrConvertRange(dst1, dst2, dstWidth);
313 #define DEBUG_SWSCALE_BUFFERS 0
314 #define DEBUG_BUFFERS(...) \
315 if (DEBUG_SWSCALE_BUFFERS) \
316 av_log(c, AV_LOG_DEBUG, __VA_ARGS__)
318 static int swscale(SwsContext *c, const uint8_t *src[],
319 int srcStride[], int srcSliceY,
320 int srcSliceH, uint8_t *dst[], int dstStride[])
322 /* load a few things into local vars to make the code more readable?
325 const int srcW = c->srcW;
327 const int dstW = c->dstW;
328 const int dstH = c->dstH;
330 const int chrDstW = c->chrDstW;
331 const int chrSrcW = c->chrSrcW;
332 const int lumXInc = c->lumXInc;
333 const int chrXInc = c->chrXInc;
335 const enum AVPixelFormat dstFormat = c->dstFormat;
336 const int flags = c->flags;
337 int32_t *vLumFilterPos = c->vLumFilterPos;
338 int32_t *vChrFilterPos = c->vChrFilterPos;
340 int32_t *hLumFilterPos = c->hLumFilterPos;
341 int32_t *hChrFilterPos = c->hChrFilterPos;
342 int16_t *hLumFilter = c->hLumFilter;
343 int16_t *hChrFilter = c->hChrFilter;
344 int32_t *lumMmxFilter = c->lumMmxFilter;
345 int32_t *chrMmxFilter = c->chrMmxFilter;
347 const int vLumFilterSize = c->vLumFilterSize;
348 const int vChrFilterSize = c->vChrFilterSize;
350 const int hLumFilterSize = c->hLumFilterSize;
351 const int hChrFilterSize = c->hChrFilterSize;
352 int16_t **lumPixBuf = c->lumPixBuf;
353 int16_t **chrUPixBuf = c->chrUPixBuf;
354 int16_t **chrVPixBuf = c->chrVPixBuf;
356 int16_t **alpPixBuf = c->alpPixBuf;
357 const int vLumBufSize = c->vLumBufSize;
358 const int vChrBufSize = c->vChrBufSize;
360 uint8_t *formatConvBuffer = c->formatConvBuffer;
361 uint32_t *pal = c->pal_yuv;
363 yuv2planar1_fn yuv2plane1 = c->yuv2plane1;
364 yuv2planarX_fn yuv2planeX = c->yuv2planeX;
365 yuv2interleavedX_fn yuv2nv12cX = c->yuv2nv12cX;
366 yuv2packed1_fn yuv2packed1 = c->yuv2packed1;
367 yuv2packed2_fn yuv2packed2 = c->yuv2packed2;
368 yuv2packedX_fn yuv2packedX = c->yuv2packedX;
369 yuv2anyX_fn yuv2anyX = c->yuv2anyX;
370 const int chrSrcSliceY = srcSliceY >> c->chrSrcVSubSample;
371 const int chrSrcSliceH = FF_CEIL_RSHIFT(srcSliceH, c->chrSrcVSubSample);
372 int should_dither = is9_OR_10BPS(c->srcFormat) ||
373 is16BPS(c->srcFormat);
376 /* vars which will change and which we need to store back in the context */
378 int lumBufIndex = c->lumBufIndex;
379 int chrBufIndex = c->chrBufIndex;
380 int lastInLumBuf = c->lastInLumBuf;
381 int lastInChrBuf = c->lastInChrBuf;
382 int perform_gamma = c->is_internal_gamma;
386 int lumEnd = c->descIndex[0];
387 int chrStart = lumEnd;
388 int chrEnd = c->descIndex[1];
390 int vEnd = c->numDesc;
391 SwsSlice *src_slice = &c->slice[lumStart];
392 SwsSlice *hout_slice = &c->slice[c->numSlice-2];
393 SwsSlice *vout_slice = &c->slice[c->numSlice-1];
394 SwsFilterDescriptor *desc = c->desc;
401 if (!usePal(c->srcFormat)) {
402 pal = c->input_rgb2yuv_table;
406 if (isPacked(c->srcFormat)) {
414 srcStride[3] = srcStride[0];
416 srcStride[1] <<= c->vChrDrop;
417 srcStride[2] <<= c->vChrDrop;
419 DEBUG_BUFFERS("swscale() %p[%d] %p[%d] %p[%d] %p[%d] -> %p[%d] %p[%d] %p[%d] %p[%d]\n",
420 src[0], srcStride[0], src[1], srcStride[1],
421 src[2], srcStride[2], src[3], srcStride[3],
422 dst[0], dstStride[0], dst[1], dstStride[1],
423 dst[2], dstStride[2], dst[3], dstStride[3]);
424 DEBUG_BUFFERS("srcSliceY: %d srcSliceH: %d dstY: %d dstH: %d\n",
425 srcSliceY, srcSliceH, dstY, dstH);
426 DEBUG_BUFFERS("vLumFilterSize: %d vLumBufSize: %d vChrFilterSize: %d vChrBufSize: %d\n",
427 vLumFilterSize, vLumBufSize, vChrFilterSize, vChrBufSize);
429 if (dstStride[0]&15 || dstStride[1]&15 ||
430 dstStride[2]&15 || dstStride[3]&15) {
431 static int warnedAlready = 0; // FIXME maybe move this into the context
432 if (flags & SWS_PRINT_INFO && !warnedAlready) {
433 av_log(c, AV_LOG_WARNING,
434 "Warning: dstStride is not aligned!\n"
435 " ->cannot do aligned memory accesses anymore\n");
440 if ( (uintptr_t)dst[0]&15 || (uintptr_t)dst[1]&15 || (uintptr_t)dst[2]&15
441 || (uintptr_t)src[0]&15 || (uintptr_t)src[1]&15 || (uintptr_t)src[2]&15
442 || dstStride[0]&15 || dstStride[1]&15 || dstStride[2]&15 || dstStride[3]&15
443 || srcStride[0]&15 || srcStride[1]&15 || srcStride[2]&15 || srcStride[3]&15
445 static int warnedAlready=0;
446 int cpu_flags = av_get_cpu_flags();
447 if (HAVE_MMXEXT && (cpu_flags & AV_CPU_FLAG_SSE2) && !warnedAlready){
448 av_log(c, AV_LOG_WARNING, "Warning: data is not aligned! This can lead to a speedloss\n");
453 /* Note the user might start scaling the picture in the middle so this
454 * will not get executed. This is not really intended but works
455 * currently, so people might do it. */
456 if (srcSliceY == 0) {
464 if (!should_dither) {
465 c->chrDither8 = c->lumDither8 = sws_pb_64;
470 ff_init_vscale_pfn(c, yuv2plane1, yuv2planeX, yuv2nv12cX,
471 yuv2packed1, yuv2packed2, yuv2packedX, yuv2anyX, c->use_mmx_vfilter);
473 ff_init_slice_from_src(src_slice, (uint8_t**)src, srcStride, c->srcW,
474 srcSliceY, srcSliceH, chrSrcSliceY, chrSrcSliceH);
476 ff_init_slice_from_src(vout_slice, (uint8_t**)dst, dstStride, c->dstW,
477 dstY, dstH, dstY >> c->chrDstVSubSample,
478 FF_CEIL_RSHIFT(dstH, c->chrDstVSubSample));
480 hout_slice->plane[0].sliceY = lastInLumBuf + 1;
481 hout_slice->plane[1].sliceY = lastInChrBuf + 1;
482 hout_slice->plane[2].sliceY = lastInChrBuf + 1;
483 hout_slice->plane[3].sliceY = lastInLumBuf + 1;
485 hout_slice->plane[0].sliceH =
486 hout_slice->plane[1].sliceH =
487 hout_slice->plane[2].sliceH =
488 hout_slice->plane[3].sliceH = 0;
489 hout_slice->width = dstW;
492 for (; dstY < dstH; dstY++) {
493 const int chrDstY = dstY >> c->chrDstVSubSample;
496 dst[0] + dstStride[0] * dstY,
497 dst[1] + dstStride[1] * chrDstY,
498 dst[2] + dstStride[2] * chrDstY,
499 (CONFIG_SWSCALE_ALPHA && alpPixBuf) ? dst[3] + dstStride[3] * dstY : NULL,
502 int use_mmx_vfilter= c->use_mmx_vfilter;
504 // First line needed as input
505 const int firstLumSrcY = FFMAX(1 - vLumFilterSize, vLumFilterPos[dstY]);
506 const int firstLumSrcY2 = FFMAX(1 - vLumFilterSize, vLumFilterPos[FFMIN(dstY | ((1 << c->chrDstVSubSample) - 1), dstH - 1)]);
507 // First line needed as input
508 const int firstChrSrcY = FFMAX(1 - vChrFilterSize, vChrFilterPos[chrDstY]);
510 // Last line needed as input
511 int lastLumSrcY = FFMIN(c->srcH, firstLumSrcY + vLumFilterSize) - 1;
512 int lastLumSrcY2 = FFMIN(c->srcH, firstLumSrcY2 + vLumFilterSize) - 1;
513 int lastChrSrcY = FFMIN(c->chrSrcH, firstChrSrcY + vChrFilterSize) - 1;
517 int posY, cPosY, firstPosY, lastPosY, firstCPosY, lastCPosY;
520 // handle holes (FAST_BILINEAR & weird filters)
521 if (firstLumSrcY > lastInLumBuf) {
523 hasLumHoles = lastInLumBuf != firstLumSrcY - 1;
525 hout_slice->plane[0].sliceY = lastInLumBuf + 1;
526 hout_slice->plane[3].sliceY = lastInLumBuf + 1;
527 hout_slice->plane[0].sliceH =
528 hout_slice->plane[3].sliceH = 0;
531 lastInLumBuf = firstLumSrcY - 1;
533 if (firstChrSrcY > lastInChrBuf) {
535 hasChrHoles = lastInChrBuf != firstChrSrcY - 1;
537 hout_slice->plane[1].sliceY = lastInChrBuf + 1;
538 hout_slice->plane[2].sliceY = lastInChrBuf + 1;
539 hout_slice->plane[1].sliceH =
540 hout_slice->plane[2].sliceH = 0;
543 lastInChrBuf = firstChrSrcY - 1;
545 av_assert0(firstLumSrcY >= lastInLumBuf - vLumBufSize + 1);
546 av_assert0(firstChrSrcY >= lastInChrBuf - vChrBufSize + 1);
548 DEBUG_BUFFERS("dstY: %d\n", dstY);
549 DEBUG_BUFFERS("\tfirstLumSrcY: %d lastLumSrcY: %d lastInLumBuf: %d\n",
550 firstLumSrcY, lastLumSrcY, lastInLumBuf);
551 DEBUG_BUFFERS("\tfirstChrSrcY: %d lastChrSrcY: %d lastInChrBuf: %d\n",
552 firstChrSrcY, lastChrSrcY, lastInChrBuf);
554 // Do we have enough lines in this slice to output the dstY line
555 enough_lines = lastLumSrcY2 < srcSliceY + srcSliceH &&
556 lastChrSrcY < FF_CEIL_RSHIFT(srcSliceY + srcSliceH, c->chrSrcVSubSample);
559 lastLumSrcY = srcSliceY + srcSliceH - 1;
560 lastChrSrcY = chrSrcSliceY + chrSrcSliceH - 1;
561 DEBUG_BUFFERS("buffering slice: lastLumSrcY %d lastChrSrcY %d\n",
562 lastLumSrcY, lastChrSrcY);
566 posY = hout_slice->plane[0].sliceY + hout_slice->plane[0].sliceH;
567 if (posY <= lastLumSrcY && !hasLumHoles) {
568 firstPosY = FFMAX(firstLumSrcY, posY);
569 lastPosY = FFMIN(lastLumSrcY + MAX_LINES_AHEAD, srcSliceY + srcSliceH - 1);
571 firstPosY = lastInLumBuf + 1;
572 lastPosY = lastLumSrcY;
575 cPosY = hout_slice->plane[1].sliceY + hout_slice->plane[1].sliceH;
576 if (cPosY <= lastChrSrcY && !hasChrHoles) {
577 firstCPosY = FFMAX(firstChrSrcY, cPosY);
578 lastCPosY = FFMIN(lastChrSrcY + MAX_LINES_AHEAD, FF_CEIL_RSHIFT(srcSliceY + srcSliceH, c->chrSrcVSubSample) - 1);
580 firstCPosY = lastInChrBuf + 1;
581 lastCPosY = lastChrSrcY;
584 ff_rotate_slice(hout_slice, lastPosY, lastCPosY);
586 if (posY < lastLumSrcY + 1) {
587 for (i = lumStart; i < lumEnd; ++i)
588 desc[i].process(c, &desc[i], firstPosY, lastPosY - firstPosY + 1);
591 lumBufIndex += lastLumSrcY - lastInLumBuf;
592 lastInLumBuf = lastLumSrcY;
594 if (cPosY < lastChrSrcY + 1) {
595 for (i = chrStart; i < chrEnd; ++i)
596 desc[i].process(c, &desc[i], firstCPosY, lastCPosY - firstCPosY + 1);
599 chrBufIndex += lastChrSrcY - lastInChrBuf;
600 lastInChrBuf = lastChrSrcY;
603 // Do horizontal scaling
604 while (lastInLumBuf < lastLumSrcY) {
605 const uint8_t *src1[4] = {
606 src[0] + (lastInLumBuf + 1 - srcSliceY) * srcStride[0],
607 src[1] + (lastInLumBuf + 1 - srcSliceY) * srcStride[1],
608 src[2] + (lastInLumBuf + 1 - srcSliceY) * srcStride[2],
609 src[3] + (lastInLumBuf + 1 - srcSliceY) * srcStride[3],
612 av_assert0(lumBufIndex < 2 * vLumBufSize);
613 av_assert0(lastInLumBuf + 1 - srcSliceY < srcSliceH);
614 av_assert0(lastInLumBuf + 1 - srcSliceY >= 0);
617 gamma_convert((uint8_t **)src1, srcW, c->inv_gamma);
619 hyscale(c, lumPixBuf[lumBufIndex], dstW, src1, srcW, lumXInc,
620 hLumFilter, hLumFilterPos, hLumFilterSize,
621 formatConvBuffer, pal, 0);
622 if (CONFIG_SWSCALE_ALPHA && alpPixBuf)
623 hyscale(c, alpPixBuf[lumBufIndex], dstW, src1, srcW,
624 lumXInc, hLumFilter, hLumFilterPos, hLumFilterSize,
625 formatConvBuffer, pal, 1);
627 DEBUG_BUFFERS("\t\tlumBufIndex %d: lastInLumBuf: %d\n",
628 lumBufIndex, lastInLumBuf);
630 while (lastInChrBuf < lastChrSrcY) {
631 const uint8_t *src1[4] = {
632 src[0] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[0],
633 src[1] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[1],
634 src[2] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[2],
635 src[3] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[3],
638 av_assert0(chrBufIndex < 2 * vChrBufSize);
639 av_assert0(lastInChrBuf + 1 - chrSrcSliceY < (chrSrcSliceH));
640 av_assert0(lastInChrBuf + 1 - chrSrcSliceY >= 0);
641 // FIXME replace parameters through context struct (some at least)
643 if (c->needs_hcscale)
644 hcscale(c, chrUPixBuf[chrBufIndex], chrVPixBuf[chrBufIndex],
645 chrDstW, src1, chrSrcW, chrXInc,
646 hChrFilter, hChrFilterPos, hChrFilterSize,
647 formatConvBuffer, pal);
649 DEBUG_BUFFERS("\t\tchrBufIndex %d: lastInChrBuf: %d\n",
650 chrBufIndex, lastInChrBuf);
653 // wrap buf index around to stay inside the ring buffer
654 if (lumBufIndex >= vLumBufSize)
655 lumBufIndex -= vLumBufSize;
656 if (chrBufIndex >= vChrBufSize)
657 chrBufIndex -= vChrBufSize;
659 break; // we can't output a dstY line so let's try with the next slice
662 ff_updateMMXDitherTables(c, dstY, lumBufIndex, chrBufIndex,
663 lastInLumBuf, lastInChrBuf);
666 c->chrDither8 = ff_dither_8x8_128[chrDstY & 7];
667 c->lumDither8 = ff_dither_8x8_128[dstY & 7];
669 if (dstY >= dstH - 2) {
670 /* hmm looks like we can't use MMX here without overwriting
671 * this array's tail */
672 ff_sws_init_output_funcs(c, &yuv2plane1, &yuv2planeX, &yuv2nv12cX,
673 &yuv2packed1, &yuv2packed2, &yuv2packedX, &yuv2anyX);
675 ff_init_vscale_pfn(c, yuv2plane1, yuv2planeX, yuv2nv12cX,
676 yuv2packed1, yuv2packed2, yuv2packedX, yuv2anyX, use_mmx_vfilter);
681 for (i = vStart; i < vEnd; ++i)
682 desc[i].process(c, &desc[i], dstY, 1);
684 const int16_t **lumSrcPtr = (const int16_t **)(void*) lumPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize;
685 const int16_t **chrUSrcPtr = (const int16_t **)(void*) chrUPixBuf + chrBufIndex + firstChrSrcY - lastInChrBuf + vChrBufSize;
686 const int16_t **chrVSrcPtr = (const int16_t **)(void*) chrVPixBuf + chrBufIndex + firstChrSrcY - lastInChrBuf + vChrBufSize;
687 const int16_t **alpSrcPtr = (CONFIG_SWSCALE_ALPHA && alpPixBuf) ?
688 (const int16_t **)(void*) alpPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize : NULL;
689 int16_t *vLumFilter = c->vLumFilter;
690 int16_t *vChrFilter = c->vChrFilter;
692 if (isPlanarYUV(dstFormat) ||
693 (isGray(dstFormat) && !isALPHA(dstFormat))) { // YV12 like
694 const int chrSkipMask = (1 << c->chrDstVSubSample) - 1;
696 vLumFilter += dstY * vLumFilterSize;
697 vChrFilter += chrDstY * vChrFilterSize;
699 // av_assert0(use_mmx_vfilter != (
700 // yuv2planeX == yuv2planeX_10BE_c
701 // || yuv2planeX == yuv2planeX_10LE_c
702 // || yuv2planeX == yuv2planeX_9BE_c
703 // || yuv2planeX == yuv2planeX_9LE_c
704 // || yuv2planeX == yuv2planeX_16BE_c
705 // || yuv2planeX == yuv2planeX_16LE_c
706 // || yuv2planeX == yuv2planeX_8_c) || !ARCH_X86);
709 vLumFilter= (int16_t *)c->lumMmxFilter;
710 vChrFilter= (int16_t *)c->chrMmxFilter;
713 if (vLumFilterSize == 1) {
714 yuv2plane1(lumSrcPtr[0], dest[0], dstW, c->lumDither8, 0);
716 yuv2planeX(vLumFilter, vLumFilterSize,
718 dstW, c->lumDither8, 0);
721 if (!((dstY & chrSkipMask) || isGray(dstFormat))) {
723 yuv2nv12cX(c, vChrFilter,
724 vChrFilterSize, chrUSrcPtr, chrVSrcPtr,
726 } else if (vChrFilterSize == 1) {
727 yuv2plane1(chrUSrcPtr[0], dest[1], chrDstW, c->chrDither8, 0);
728 yuv2plane1(chrVSrcPtr[0], dest[2], chrDstW, c->chrDither8, 3);
730 yuv2planeX(vChrFilter,
731 vChrFilterSize, chrUSrcPtr, dest[1],
732 chrDstW, c->chrDither8, 0);
733 yuv2planeX(vChrFilter,
734 vChrFilterSize, chrVSrcPtr, dest[2],
735 chrDstW, c->chrDither8, use_mmx_vfilter ? (c->uv_offx2 >> 1) : 3);
739 if (CONFIG_SWSCALE_ALPHA && alpPixBuf) {
741 vLumFilter= (int16_t *)c->alpMmxFilter;
743 if (vLumFilterSize == 1) {
744 yuv2plane1(alpSrcPtr[0], dest[3], dstW,
747 yuv2planeX(vLumFilter,
748 vLumFilterSize, alpSrcPtr, dest[3],
749 dstW, c->lumDither8, 0);
752 } else if (yuv2packedX) {
753 av_assert1(lumSrcPtr + vLumFilterSize - 1 < (const int16_t **)lumPixBuf + vLumBufSize * 2);
754 av_assert1(chrUSrcPtr + vChrFilterSize - 1 < (const int16_t **)chrUPixBuf + vChrBufSize * 2);
755 if (c->yuv2packed1 && vLumFilterSize == 1 &&
756 vChrFilterSize <= 2) { // unscaled RGB
757 int chrAlpha = vChrFilterSize == 1 ? 0 : vChrFilter[2 * dstY + 1];
758 yuv2packed1(c, *lumSrcPtr, chrUSrcPtr, chrVSrcPtr,
759 alpPixBuf ? *alpSrcPtr : NULL,
760 dest[0], dstW, chrAlpha, dstY);
761 } else if (c->yuv2packed2 && vLumFilterSize == 2 &&
762 vChrFilterSize == 2) { // bilinear upscale RGB
763 int lumAlpha = vLumFilter[2 * dstY + 1];
764 int chrAlpha = vChrFilter[2 * dstY + 1];
766 lumMmxFilter[3] = vLumFilter[2 * dstY] * 0x10001;
768 chrMmxFilter[3] = vChrFilter[2 * chrDstY] * 0x10001;
769 yuv2packed2(c, lumSrcPtr, chrUSrcPtr, chrVSrcPtr,
770 alpPixBuf ? alpSrcPtr : NULL,
771 dest[0], dstW, lumAlpha, chrAlpha, dstY);
772 } else { // general RGB
773 yuv2packedX(c, vLumFilter + dstY * vLumFilterSize,
774 lumSrcPtr, vLumFilterSize,
775 vChrFilter + dstY * vChrFilterSize,
776 chrUSrcPtr, chrVSrcPtr, vChrFilterSize,
777 alpSrcPtr, dest[0], dstW, dstY);
780 av_assert1(!yuv2packed1 && !yuv2packed2);
781 yuv2anyX(c, vLumFilter + dstY * vLumFilterSize,
782 lumSrcPtr, vLumFilterSize,
783 vChrFilter + dstY * vChrFilterSize,
784 chrUSrcPtr, chrVSrcPtr, vChrFilterSize,
785 alpSrcPtr, dest, dstW, dstY);
788 gamma_convert(dest, dstW, c->gamma);
792 if (isPlanar(dstFormat) && isALPHA(dstFormat) && !alpPixBuf) {
794 int height = dstY - lastDstY;
796 if (is16BPS(dstFormat) || isNBPS(dstFormat)) {
797 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(dstFormat);
798 fillPlane16(dst[3], dstStride[3], length, height, lastDstY,
799 1, desc->comp[3].depth_minus1,
802 fillPlane(dst[3], dstStride[3], length, height, lastDstY, 255);
805 #if HAVE_MMXEXT_INLINE
806 if (av_get_cpu_flags() & AV_CPU_FLAG_MMXEXT)
807 __asm__ volatile ("sfence" ::: "memory");
811 /* store changed local vars back in the context */
813 c->lumBufIndex = lumBufIndex;
814 c->chrBufIndex = chrBufIndex;
815 c->lastInLumBuf = lastInLumBuf;
816 c->lastInChrBuf = lastInChrBuf;
818 return dstY - lastDstY;
821 av_cold void ff_sws_init_range_convert(SwsContext *c)
823 c->lumConvertRange = NULL;
824 c->chrConvertRange = NULL;
825 if (c->srcRange != c->dstRange && !isAnyRGB(c->dstFormat)) {
826 if (c->dstBpc <= 14) {
828 c->lumConvertRange = lumRangeFromJpeg_c;
829 c->chrConvertRange = chrRangeFromJpeg_c;
831 c->lumConvertRange = lumRangeToJpeg_c;
832 c->chrConvertRange = chrRangeToJpeg_c;
836 c->lumConvertRange = lumRangeFromJpeg16_c;
837 c->chrConvertRange = chrRangeFromJpeg16_c;
839 c->lumConvertRange = lumRangeToJpeg16_c;
840 c->chrConvertRange = chrRangeToJpeg16_c;
846 static av_cold void sws_init_swscale(SwsContext *c)
848 enum AVPixelFormat srcFormat = c->srcFormat;
850 ff_sws_init_output_funcs(c, &c->yuv2plane1, &c->yuv2planeX,
851 &c->yuv2nv12cX, &c->yuv2packed1,
852 &c->yuv2packed2, &c->yuv2packedX, &c->yuv2anyX);
854 ff_sws_init_input_funcs(c);
857 if (c->srcBpc == 8) {
858 if (c->dstBpc <= 14) {
859 c->hyScale = c->hcScale = hScale8To15_c;
860 if (c->flags & SWS_FAST_BILINEAR) {
861 c->hyscale_fast = ff_hyscale_fast_c;
862 c->hcscale_fast = ff_hcscale_fast_c;
865 c->hyScale = c->hcScale = hScale8To19_c;
868 c->hyScale = c->hcScale = c->dstBpc > 14 ? hScale16To19_c
872 ff_sws_init_range_convert(c);
874 if (!(isGray(srcFormat) || isGray(c->dstFormat) ||
875 srcFormat == AV_PIX_FMT_MONOBLACK || srcFormat == AV_PIX_FMT_MONOWHITE))
876 c->needs_hcscale = 1;
879 SwsFunc ff_getSwsFunc(SwsContext *c)
884 ff_sws_init_swscale_ppc(c);
886 ff_sws_init_swscale_x86(c);
891 static void reset_ptr(const uint8_t *src[], enum AVPixelFormat format)
893 if (!isALPHA(format))
895 if (!isPlanar(format)) {
896 src[3] = src[2] = NULL;
903 static int check_image_pointers(const uint8_t * const data[4], enum AVPixelFormat pix_fmt,
904 const int linesizes[4])
906 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
911 for (i = 0; i < 4; i++) {
912 int plane = desc->comp[i].plane;
913 if (!data[plane] || !linesizes[plane])
920 static void xyz12Torgb48(struct SwsContext *c, uint16_t *dst,
921 const uint16_t *src, int stride, int h)
924 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(c->srcFormat);
926 for (yp=0; yp<h; yp++) {
927 for (xp=0; xp+2<stride; xp+=3) {
928 int x, y, z, r, g, b;
930 if (desc->flags & AV_PIX_FMT_FLAG_BE) {
931 x = AV_RB16(src + xp + 0);
932 y = AV_RB16(src + xp + 1);
933 z = AV_RB16(src + xp + 2);
935 x = AV_RL16(src + xp + 0);
936 y = AV_RL16(src + xp + 1);
937 z = AV_RL16(src + xp + 2);
940 x = c->xyzgamma[x>>4];
941 y = c->xyzgamma[y>>4];
942 z = c->xyzgamma[z>>4];
944 // convert from XYZlinear to sRGBlinear
945 r = c->xyz2rgb_matrix[0][0] * x +
946 c->xyz2rgb_matrix[0][1] * y +
947 c->xyz2rgb_matrix[0][2] * z >> 12;
948 g = c->xyz2rgb_matrix[1][0] * x +
949 c->xyz2rgb_matrix[1][1] * y +
950 c->xyz2rgb_matrix[1][2] * z >> 12;
951 b = c->xyz2rgb_matrix[2][0] * x +
952 c->xyz2rgb_matrix[2][1] * y +
953 c->xyz2rgb_matrix[2][2] * z >> 12;
955 // limit values to 12-bit depth
956 r = av_clip_uintp2(r, 12);
957 g = av_clip_uintp2(g, 12);
958 b = av_clip_uintp2(b, 12);
960 // convert from sRGBlinear to RGB and scale from 12bit to 16bit
961 if (desc->flags & AV_PIX_FMT_FLAG_BE) {
962 AV_WB16(dst + xp + 0, c->rgbgamma[r] << 4);
963 AV_WB16(dst + xp + 1, c->rgbgamma[g] << 4);
964 AV_WB16(dst + xp + 2, c->rgbgamma[b] << 4);
966 AV_WL16(dst + xp + 0, c->rgbgamma[r] << 4);
967 AV_WL16(dst + xp + 1, c->rgbgamma[g] << 4);
968 AV_WL16(dst + xp + 2, c->rgbgamma[b] << 4);
976 static void rgb48Toxyz12(struct SwsContext *c, uint16_t *dst,
977 const uint16_t *src, int stride, int h)
980 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(c->dstFormat);
982 for (yp=0; yp<h; yp++) {
983 for (xp=0; xp+2<stride; xp+=3) {
984 int x, y, z, r, g, b;
986 if (desc->flags & AV_PIX_FMT_FLAG_BE) {
987 r = AV_RB16(src + xp + 0);
988 g = AV_RB16(src + xp + 1);
989 b = AV_RB16(src + xp + 2);
991 r = AV_RL16(src + xp + 0);
992 g = AV_RL16(src + xp + 1);
993 b = AV_RL16(src + xp + 2);
996 r = c->rgbgammainv[r>>4];
997 g = c->rgbgammainv[g>>4];
998 b = c->rgbgammainv[b>>4];
1000 // convert from sRGBlinear to XYZlinear
1001 x = c->rgb2xyz_matrix[0][0] * r +
1002 c->rgb2xyz_matrix[0][1] * g +
1003 c->rgb2xyz_matrix[0][2] * b >> 12;
1004 y = c->rgb2xyz_matrix[1][0] * r +
1005 c->rgb2xyz_matrix[1][1] * g +
1006 c->rgb2xyz_matrix[1][2] * b >> 12;
1007 z = c->rgb2xyz_matrix[2][0] * r +
1008 c->rgb2xyz_matrix[2][1] * g +
1009 c->rgb2xyz_matrix[2][2] * b >> 12;
1011 // limit values to 12-bit depth
1012 x = av_clip_uintp2(x, 12);
1013 y = av_clip_uintp2(y, 12);
1014 z = av_clip_uintp2(z, 12);
1016 // convert from XYZlinear to X'Y'Z' and scale from 12bit to 16bit
1017 if (desc->flags & AV_PIX_FMT_FLAG_BE) {
1018 AV_WB16(dst + xp + 0, c->xyzgammainv[x] << 4);
1019 AV_WB16(dst + xp + 1, c->xyzgammainv[y] << 4);
1020 AV_WB16(dst + xp + 2, c->xyzgammainv[z] << 4);
1022 AV_WL16(dst + xp + 0, c->xyzgammainv[x] << 4);
1023 AV_WL16(dst + xp + 1, c->xyzgammainv[y] << 4);
1024 AV_WL16(dst + xp + 2, c->xyzgammainv[z] << 4);
1033 * swscale wrapper, so we don't need to export the SwsContext.
1034 * Assumes planar YUV to be in YUV order instead of YVU.
1036 int attribute_align_arg sws_scale(struct SwsContext *c,
1037 const uint8_t * const srcSlice[],
1038 const int srcStride[], int srcSliceY,
1039 int srcSliceH, uint8_t *const dst[],
1040 const int dstStride[])
1043 const uint8_t *src2[4];
1045 uint8_t *rgb0_tmp = NULL;
1047 if (!srcStride || !dstStride || !dst || !srcSlice) {
1048 av_log(c, AV_LOG_ERROR, "One of the input parameters to sws_scale() is NULL, please check the calling code\n");
1052 if (c->gamma_flag && c->cascaded_context[0]) {
1055 ret = sws_scale(c->cascaded_context[0],
1056 srcSlice, srcStride, srcSliceY, srcSliceH,
1057 c->cascaded_tmp, c->cascaded_tmpStride);
1062 if (c->cascaded_context[2])
1063 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);
1065 ret = sws_scale(c->cascaded_context[1], (const uint8_t * const *)c->cascaded_tmp, c->cascaded_tmpStride, srcSliceY, srcSliceH, dst, dstStride);
1070 if (c->cascaded_context[2]) {
1071 ret = sws_scale(c->cascaded_context[2],
1072 (const uint8_t * const *)c->cascaded1_tmp, c->cascaded1_tmpStride, c->cascaded_context[1]->dstY - ret, c->cascaded_context[1]->dstY,
1078 if (c->cascaded_context[0] && srcSliceY == 0 && srcSliceH == c->cascaded_context[0]->srcH) {
1079 ret = sws_scale(c->cascaded_context[0],
1080 srcSlice, srcStride, srcSliceY, srcSliceH,
1081 c->cascaded_tmp, c->cascaded_tmpStride);
1084 ret = sws_scale(c->cascaded_context[1],
1085 (const uint8_t * const * )c->cascaded_tmp, c->cascaded_tmpStride, 0, c->cascaded_context[0]->dstH,
1090 memcpy(src2, srcSlice, sizeof(src2));
1091 memcpy(dst2, dst, sizeof(dst2));
1093 // do not mess up sliceDir if we have a "trailing" 0-size slice
1097 if (!check_image_pointers(srcSlice, c->srcFormat, srcStride)) {
1098 av_log(c, AV_LOG_ERROR, "bad src image pointers\n");
1101 if (!check_image_pointers((const uint8_t* const*)dst, c->dstFormat, dstStride)) {
1102 av_log(c, AV_LOG_ERROR, "bad dst image pointers\n");
1106 if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
1107 av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");
1110 if (c->sliceDir == 0) {
1111 if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;
1114 if (usePal(c->srcFormat)) {
1115 for (i = 0; i < 256; i++) {
1116 int r, g, b, y, u, v, a = 0xff;
1117 if (c->srcFormat == AV_PIX_FMT_PAL8) {
1118 uint32_t p = ((const uint32_t *)(srcSlice[1]))[i];
1119 a = (p >> 24) & 0xFF;
1120 r = (p >> 16) & 0xFF;
1121 g = (p >> 8) & 0xFF;
1123 } else if (c->srcFormat == AV_PIX_FMT_RGB8) {
1124 r = ( i >> 5 ) * 36;
1125 g = ((i >> 2) & 7) * 36;
1127 } else if (c->srcFormat == AV_PIX_FMT_BGR8) {
1128 b = ( i >> 6 ) * 85;
1129 g = ((i >> 3) & 7) * 36;
1131 } else if (c->srcFormat == AV_PIX_FMT_RGB4_BYTE) {
1132 r = ( i >> 3 ) * 255;
1133 g = ((i >> 1) & 3) * 85;
1135 } else if (c->srcFormat == AV_PIX_FMT_GRAY8 || c->srcFormat == AV_PIX_FMT_GRAY8A) {
1138 av_assert1(c->srcFormat == AV_PIX_FMT_BGR4_BYTE);
1139 b = ( i >> 3 ) * 255;
1140 g = ((i >> 1) & 3) * 85;
1143 #define RGB2YUV_SHIFT 15
1144 #define BY ( (int) (0.114 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
1145 #define BV (-(int) (0.081 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
1146 #define BU ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
1147 #define GY ( (int) (0.587 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
1148 #define GV (-(int) (0.419 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
1149 #define GU (-(int) (0.331 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
1150 #define RY ( (int) (0.299 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
1151 #define RV ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
1152 #define RU (-(int) (0.169 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
1154 y = av_clip_uint8((RY * r + GY * g + BY * b + ( 33 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
1155 u = av_clip_uint8((RU * r + GU * g + BU * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
1156 v = av_clip_uint8((RV * r + GV * g + BV * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
1157 c->pal_yuv[i]= y + (u<<8) + (v<<16) + ((unsigned)a<<24);
1159 switch (c->dstFormat) {
1160 case AV_PIX_FMT_BGR32:
1162 case AV_PIX_FMT_RGB24:
1164 c->pal_rgb[i]= r + (g<<8) + (b<<16) + ((unsigned)a<<24);
1166 case AV_PIX_FMT_BGR32_1:
1168 case AV_PIX_FMT_BGR24:
1170 c->pal_rgb[i]= a + (r<<8) + (g<<16) + ((unsigned)b<<24);
1172 case AV_PIX_FMT_RGB32_1:
1174 case AV_PIX_FMT_RGB24:
1176 c->pal_rgb[i]= a + (b<<8) + (g<<16) + ((unsigned)r<<24);
1178 case AV_PIX_FMT_RGB32:
1180 case AV_PIX_FMT_BGR24:
1183 c->pal_rgb[i]= b + (g<<8) + (r<<16) + ((unsigned)a<<24);
1188 if (c->src0Alpha && !c->dst0Alpha && isALPHA(c->dstFormat)) {
1191 rgb0_tmp = av_malloc(FFABS(srcStride[0]) * srcSliceH + 32);
1193 return AVERROR(ENOMEM);
1195 base = srcStride[0] < 0 ? rgb0_tmp - srcStride[0] * (srcSliceH-1) : rgb0_tmp;
1196 for (y=0; y<srcSliceH; y++){
1197 memcpy(base + srcStride[0]*y, src2[0] + srcStride[0]*y, 4*c->srcW);
1198 for (x=c->src0Alpha-1; x<4*c->srcW; x+=4) {
1199 base[ srcStride[0]*y + x] = 0xFF;
1205 if (c->srcXYZ && !(c->dstXYZ && c->srcW==c->dstW && c->srcH==c->dstH)) {
1207 rgb0_tmp = av_malloc(FFABS(srcStride[0]) * srcSliceH + 32);
1209 return AVERROR(ENOMEM);
1211 base = srcStride[0] < 0 ? rgb0_tmp - srcStride[0] * (srcSliceH-1) : rgb0_tmp;
1213 xyz12Torgb48(c, (uint16_t*)base, (const uint16_t*)src2[0], srcStride[0]/2, srcSliceH);
1217 if (!srcSliceY && (c->flags & SWS_BITEXACT) && c->dither == SWS_DITHER_ED && c->dither_error[0])
1218 for (i = 0; i < 4; i++)
1219 memset(c->dither_error[i], 0, sizeof(c->dither_error[0][0]) * (c->dstW+2));
1222 // copy strides, so they can safely be modified
1223 if (c->sliceDir == 1) {
1224 // slices go from top to bottom
1225 int srcStride2[4] = { srcStride[0], srcStride[1], srcStride[2],
1227 int dstStride2[4] = { dstStride[0], dstStride[1], dstStride[2],
1230 reset_ptr(src2, c->srcFormat);
1231 reset_ptr((void*)dst2, c->dstFormat);
1233 /* reset slice direction at end of frame */
1234 if (srcSliceY + srcSliceH == c->srcH)
1237 ret = c->swscale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2,
1240 // slices go from bottom to top => we flip the image internally
1241 int srcStride2[4] = { -srcStride[0], -srcStride[1], -srcStride[2],
1243 int dstStride2[4] = { -dstStride[0], -dstStride[1], -dstStride[2],
1246 src2[0] += (srcSliceH - 1) * srcStride[0];
1247 if (!usePal(c->srcFormat))
1248 src2[1] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[1];
1249 src2[2] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[2];
1250 src2[3] += (srcSliceH - 1) * srcStride[3];
1251 dst2[0] += ( c->dstH - 1) * dstStride[0];
1252 dst2[1] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[1];
1253 dst2[2] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[2];
1254 dst2[3] += ( c->dstH - 1) * dstStride[3];
1256 reset_ptr(src2, c->srcFormat);
1257 reset_ptr((void*)dst2, c->dstFormat);
1259 /* reset slice direction at end of frame */
1263 ret = c->swscale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH,
1264 srcSliceH, dst2, dstStride2);
1268 if (c->dstXYZ && !(c->srcXYZ && c->srcW==c->dstW && c->srcH==c->dstH)) {
1269 /* replace on the same data */
1270 rgb48Toxyz12(c, (uint16_t*)dst2[0], (const uint16_t*)dst2[0], dstStride[0]/2, ret);