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swscale.c
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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/imgutils.h"
31 #include "libavutil/intreadwrite.h"
32 #include "libavutil/mathematics.h"
33 #include "libavutil/pixdesc.h"
34 #include "config.h"
35 #include "rgb2rgb.h"
36 #include "swscale_internal.h"
37 #include "swscale.h"
38 
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, },
49 };
50 
51 DECLARE_ALIGNED(8, static const uint8_t, sws_pb_64)[8] = {
52  64, 64, 64, 64, 64, 64, 64, 64
53 };
54 
56  int height, int y, uint8_t val)
57 {
58  int i;
59  uint8_t *ptr = plane + stride * y;
60  for (i = 0; i < height; i++) {
61  memset(ptr, val, width);
62  ptr += stride;
63  }
64 }
65 
66 static void hScale16To19_c(SwsContext *c, int16_t *_dst, int dstW,
67  const uint8_t *_src, const int16_t *filter,
68  const int32_t *filterPos, int filterSize)
69 {
71  int i;
72  int32_t *dst = (int32_t *) _dst;
73  const uint16_t *src = (const uint16_t *) _src;
74  int bits = desc->comp[0].depth - 1;
75  int sh = bits - 4;
76 
77  if((isAnyRGB(c->srcFormat) || c->srcFormat==AV_PIX_FMT_PAL8) && desc->comp[0].depth<16)
78  sh= 9;
79 
80  for (i = 0; i < dstW; i++) {
81  int j;
82  int srcPos = filterPos[i];
83  int val = 0;
84 
85  for (j = 0; j < filterSize; j++) {
86  val += src[srcPos + j] * filter[filterSize * i + j];
87  }
88  // filter=14 bit, input=16 bit, output=30 bit, >> 11 makes 19 bit
89  dst[i] = FFMIN(val >> sh, (1 << 19) - 1);
90  }
91 }
92 
93 static void hScale16To15_c(SwsContext *c, int16_t *dst, int dstW,
94  const uint8_t *_src, const int16_t *filter,
95  const int32_t *filterPos, int filterSize)
96 {
98  int i;
99  const uint16_t *src = (const uint16_t *) _src;
100  int sh = desc->comp[0].depth - 1;
101 
102  if(sh<15)
103  sh= isAnyRGB(c->srcFormat) || c->srcFormat==AV_PIX_FMT_PAL8 ? 13 : (desc->comp[0].depth - 1);
104 
105  for (i = 0; i < dstW; i++) {
106  int j;
107  int srcPos = filterPos[i];
108  int val = 0;
109 
110  for (j = 0; j < filterSize; j++) {
111  val += src[srcPos + j] * filter[filterSize * i + j];
112  }
113  // filter=14 bit, input=16 bit, output=30 bit, >> 15 makes 15 bit
114  dst[i] = FFMIN(val >> sh, (1 << 15) - 1);
115  }
116 }
117 
118 // bilinear / bicubic scaling
119 static void hScale8To15_c(SwsContext *c, int16_t *dst, int dstW,
120  const uint8_t *src, const int16_t *filter,
121  const int32_t *filterPos, int filterSize)
122 {
123  int i;
124  for (i = 0; i < dstW; i++) {
125  int j;
126  int srcPos = filterPos[i];
127  int val = 0;
128  for (j = 0; j < filterSize; j++) {
129  val += ((int)src[srcPos + j]) * filter[filterSize * i + j];
130  }
131  dst[i] = FFMIN(val >> 7, (1 << 15) - 1); // the cubic equation does overflow ...
132  }
133 }
134 
135 static void hScale8To19_c(SwsContext *c, int16_t *_dst, int dstW,
136  const uint8_t *src, const int16_t *filter,
137  const int32_t *filterPos, int filterSize)
138 {
139  int i;
140  int32_t *dst = (int32_t *) _dst;
141  for (i = 0; i < dstW; i++) {
142  int j;
143  int srcPos = filterPos[i];
144  int val = 0;
145  for (j = 0; j < filterSize; j++) {
146  val += ((int)src[srcPos + j]) * filter[filterSize * i + j];
147  }
148  dst[i] = FFMIN(val >> 3, (1 << 19) - 1); // the cubic equation does overflow ...
149  }
150 }
151 
152 // FIXME all pal and rgb srcFormats could do this conversion as well
153 // FIXME all scalers more complex than bilinear could do half of this transform
154 static void chrRangeToJpeg_c(int16_t *dstU, int16_t *dstV, int width)
155 {
156  int i;
157  for (i = 0; i < width; i++) {
158  dstU[i] = (FFMIN(dstU[i], 30775) * 4663 - 9289992) >> 12; // -264
159  dstV[i] = (FFMIN(dstV[i], 30775) * 4663 - 9289992) >> 12; // -264
160  }
161 }
162 
163 static void chrRangeFromJpeg_c(int16_t *dstU, int16_t *dstV, int width)
164 {
165  int i;
166  for (i = 0; i < width; i++) {
167  dstU[i] = (dstU[i] * 1799 + 4081085) >> 11; // 1469
168  dstV[i] = (dstV[i] * 1799 + 4081085) >> 11; // 1469
169  }
170 }
171 
172 static void lumRangeToJpeg_c(int16_t *dst, int width)
173 {
174  int i;
175  for (i = 0; i < width; i++)
176  dst[i] = (FFMIN(dst[i], 30189) * 19077 - 39057361) >> 14;
177 }
178 
179 static void lumRangeFromJpeg_c(int16_t *dst, int width)
180 {
181  int i;
182  for (i = 0; i < width; i++)
183  dst[i] = (dst[i] * 14071 + 33561947) >> 14;
184 }
185 
186 static void chrRangeToJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width)
187 {
188  int i;
189  int32_t *dstU = (int32_t *) _dstU;
190  int32_t *dstV = (int32_t *) _dstV;
191  for (i = 0; i < width; i++) {
192  dstU[i] = (FFMIN(dstU[i], 30775 << 4) * 4663 - (9289992 << 4)) >> 12; // -264
193  dstV[i] = (FFMIN(dstV[i], 30775 << 4) * 4663 - (9289992 << 4)) >> 12; // -264
194  }
195 }
196 
197 static void chrRangeFromJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width)
198 {
199  int i;
200  int32_t *dstU = (int32_t *) _dstU;
201  int32_t *dstV = (int32_t *) _dstV;
202  for (i = 0; i < width; i++) {
203  dstU[i] = (dstU[i] * 1799 + (4081085 << 4)) >> 11; // 1469
204  dstV[i] = (dstV[i] * 1799 + (4081085 << 4)) >> 11; // 1469
205  }
206 }
207 
208 static void lumRangeToJpeg16_c(int16_t *_dst, int width)
209 {
210  int i;
211  int32_t *dst = (int32_t *) _dst;
212  for (i = 0; i < width; i++) {
213  dst[i] = ((int)(FFMIN(dst[i], 30189 << 4) * 4769U - (39057361 << 2))) >> 12;
214  }
215 }
216 
217 static void lumRangeFromJpeg16_c(int16_t *_dst, int width)
218 {
219  int i;
220  int32_t *dst = (int32_t *) _dst;
221  for (i = 0; i < width; i++)
222  dst[i] = (dst[i]*(14071/4) + (33561947<<4)/4)>>12;
223 }
224 
225 
226 #define DEBUG_SWSCALE_BUFFERS 0
227 #define DEBUG_BUFFERS(...) \
228  if (DEBUG_SWSCALE_BUFFERS) \
229  av_log(c, AV_LOG_DEBUG, __VA_ARGS__)
230 
231 static int swscale(SwsContext *c, const uint8_t *src[],
232  int srcStride[], int srcSliceY,
233  int srcSliceH, uint8_t *dst[], int dstStride[])
234 {
235  /* load a few things into local vars to make the code more readable?
236  * and faster */
237  const int dstW = c->dstW;
238  const int dstH = c->dstH;
239 
240  const enum AVPixelFormat dstFormat = c->dstFormat;
241  const int flags = c->flags;
242  int32_t *vLumFilterPos = c->vLumFilterPos;
243  int32_t *vChrFilterPos = c->vChrFilterPos;
244 
245  const int vLumFilterSize = c->vLumFilterSize;
246  const int vChrFilterSize = c->vChrFilterSize;
247 
248  yuv2planar1_fn yuv2plane1 = c->yuv2plane1;
249  yuv2planarX_fn yuv2planeX = c->yuv2planeX;
250  yuv2interleavedX_fn yuv2nv12cX = c->yuv2nv12cX;
251  yuv2packed1_fn yuv2packed1 = c->yuv2packed1;
252  yuv2packed2_fn yuv2packed2 = c->yuv2packed2;
253  yuv2packedX_fn yuv2packedX = c->yuv2packedX;
254  yuv2anyX_fn yuv2anyX = c->yuv2anyX;
255  const int chrSrcSliceY = srcSliceY >> c->chrSrcVSubSample;
256  const int chrSrcSliceH = AV_CEIL_RSHIFT(srcSliceH, c->chrSrcVSubSample);
257  int should_dither = is9_OR_10BPS(c->srcFormat) ||
258  is16BPS(c->srcFormat);
259  int lastDstY;
260 
261  /* vars which will change and which we need to store back in the context */
262  int dstY = c->dstY;
263  int lumBufIndex = c->lumBufIndex;
264  int chrBufIndex = c->chrBufIndex;
265  int lastInLumBuf = c->lastInLumBuf;
266  int lastInChrBuf = c->lastInChrBuf;
267 
268 
269  int lumStart = 0;
270  int lumEnd = c->descIndex[0];
271  int chrStart = lumEnd;
272  int chrEnd = c->descIndex[1];
273  int vStart = chrEnd;
274  int vEnd = c->numDesc;
275  SwsSlice *src_slice = &c->slice[lumStart];
276  SwsSlice *hout_slice = &c->slice[c->numSlice-2];
277  SwsSlice *vout_slice = &c->slice[c->numSlice-1];
279 
280 
281  int needAlpha = c->needAlpha;
282 
283  int hasLumHoles = 1;
284  int hasChrHoles = 1;
285 
286 
287  if (isPacked(c->srcFormat)) {
288  src[0] =
289  src[1] =
290  src[2] =
291  src[3] = src[0];
292  srcStride[0] =
293  srcStride[1] =
294  srcStride[2] =
295  srcStride[3] = srcStride[0];
296  }
297  srcStride[1] <<= c->vChrDrop;
298  srcStride[2] <<= c->vChrDrop;
299 
300  DEBUG_BUFFERS("swscale() %p[%d] %p[%d] %p[%d] %p[%d] -> %p[%d] %p[%d] %p[%d] %p[%d]\n",
301  src[0], srcStride[0], src[1], srcStride[1],
302  src[2], srcStride[2], src[3], srcStride[3],
303  dst[0], dstStride[0], dst[1], dstStride[1],
304  dst[2], dstStride[2], dst[3], dstStride[3]);
305  DEBUG_BUFFERS("srcSliceY: %d srcSliceH: %d dstY: %d dstH: %d\n",
306  srcSliceY, srcSliceH, dstY, dstH);
307  DEBUG_BUFFERS("vLumFilterSize: %d vChrFilterSize: %d\n",
308  vLumFilterSize, vChrFilterSize);
309 
310  if (dstStride[0]&15 || dstStride[1]&15 ||
311  dstStride[2]&15 || dstStride[3]&15) {
312  static int warnedAlready = 0; // FIXME maybe move this into the context
313  if (flags & SWS_PRINT_INFO && !warnedAlready) {
315  "Warning: dstStride is not aligned!\n"
316  " ->cannot do aligned memory accesses anymore\n");
317  warnedAlready = 1;
318  }
319  }
320 
321  if ( (uintptr_t)dst[0]&15 || (uintptr_t)dst[1]&15 || (uintptr_t)dst[2]&15
322  || (uintptr_t)src[0]&15 || (uintptr_t)src[1]&15 || (uintptr_t)src[2]&15
323  || dstStride[0]&15 || dstStride[1]&15 || dstStride[2]&15 || dstStride[3]&15
324  || srcStride[0]&15 || srcStride[1]&15 || srcStride[2]&15 || srcStride[3]&15
325  ) {
326  static int warnedAlready=0;
327  int cpu_flags = av_get_cpu_flags();
328  if (HAVE_MMXEXT && (cpu_flags & AV_CPU_FLAG_SSE2) && !warnedAlready){
329  av_log(c, AV_LOG_WARNING, "Warning: data is not aligned! This can lead to a speedloss\n");
330  warnedAlready=1;
331  }
332  }
333 
334  /* Note the user might start scaling the picture in the middle so this
335  * will not get executed. This is not really intended but works
336  * currently, so people might do it. */
337  if (srcSliceY == 0) {
338  lumBufIndex = -1;
339  chrBufIndex = -1;
340  dstY = 0;
341  lastInLumBuf = -1;
342  lastInChrBuf = -1;
343  }
344 
345  if (!should_dither) {
346  c->chrDither8 = c->lumDither8 = sws_pb_64;
347  }
348  lastDstY = dstY;
349 
350  ff_init_vscale_pfn(c, yuv2plane1, yuv2planeX, yuv2nv12cX,
351  yuv2packed1, yuv2packed2, yuv2packedX, yuv2anyX, c->use_mmx_vfilter);
352 
353  ff_init_slice_from_src(src_slice, (uint8_t**)src, srcStride, c->srcW,
354  srcSliceY, srcSliceH, chrSrcSliceY, chrSrcSliceH, 1);
355 
356  ff_init_slice_from_src(vout_slice, (uint8_t**)dst, dstStride, c->dstW,
357  dstY, dstH, dstY >> c->chrDstVSubSample,
358  AV_CEIL_RSHIFT(dstH, c->chrDstVSubSample), 0);
359  if (srcSliceY == 0) {
360  hout_slice->plane[0].sliceY = lastInLumBuf + 1;
361  hout_slice->plane[1].sliceY = lastInChrBuf + 1;
362  hout_slice->plane[2].sliceY = lastInChrBuf + 1;
363  hout_slice->plane[3].sliceY = lastInLumBuf + 1;
364 
365  hout_slice->plane[0].sliceH =
366  hout_slice->plane[1].sliceH =
367  hout_slice->plane[2].sliceH =
368  hout_slice->plane[3].sliceH = 0;
369  hout_slice->width = dstW;
370  }
371 
372  for (; dstY < dstH; dstY++) {
373  const int chrDstY = dstY >> c->chrDstVSubSample;
374  int use_mmx_vfilter= c->use_mmx_vfilter;
375 
376  // First line needed as input
377  const int firstLumSrcY = FFMAX(1 - vLumFilterSize, vLumFilterPos[dstY]);
378  const int firstLumSrcY2 = FFMAX(1 - vLumFilterSize, vLumFilterPos[FFMIN(dstY | ((1 << c->chrDstVSubSample) - 1), dstH - 1)]);
379  // First line needed as input
380  const int firstChrSrcY = FFMAX(1 - vChrFilterSize, vChrFilterPos[chrDstY]);
381 
382  // Last line needed as input
383  int lastLumSrcY = FFMIN(c->srcH, firstLumSrcY + vLumFilterSize) - 1;
384  int lastLumSrcY2 = FFMIN(c->srcH, firstLumSrcY2 + vLumFilterSize) - 1;
385  int lastChrSrcY = FFMIN(c->chrSrcH, firstChrSrcY + vChrFilterSize) - 1;
386  int enough_lines;
387 
388  int i;
389  int posY, cPosY, firstPosY, lastPosY, firstCPosY, lastCPosY;
390 
391  // handle holes (FAST_BILINEAR & weird filters)
392  if (firstLumSrcY > lastInLumBuf) {
393 
394  hasLumHoles = lastInLumBuf != firstLumSrcY - 1;
395  if (hasLumHoles) {
396  hout_slice->plane[0].sliceY = firstLumSrcY;
397  hout_slice->plane[3].sliceY = firstLumSrcY;
398  hout_slice->plane[0].sliceH =
399  hout_slice->plane[3].sliceH = 0;
400  }
401 
402  lastInLumBuf = firstLumSrcY - 1;
403  }
404  if (firstChrSrcY > lastInChrBuf) {
405 
406  hasChrHoles = lastInChrBuf != firstChrSrcY - 1;
407  if (hasChrHoles) {
408  hout_slice->plane[1].sliceY = firstChrSrcY;
409  hout_slice->plane[2].sliceY = firstChrSrcY;
410  hout_slice->plane[1].sliceH =
411  hout_slice->plane[2].sliceH = 0;
412  }
413 
414  lastInChrBuf = firstChrSrcY - 1;
415  }
416  av_assert0(firstLumSrcY >= lastInLumBuf - vLumFilterSize + 1);
417  av_assert0(firstChrSrcY >= lastInChrBuf - vChrFilterSize + 1);
418 
419  DEBUG_BUFFERS("dstY: %d\n", dstY);
420  DEBUG_BUFFERS("\tfirstLumSrcY: %d lastLumSrcY: %d lastInLumBuf: %d\n",
421  firstLumSrcY, lastLumSrcY, lastInLumBuf);
422  DEBUG_BUFFERS("\tfirstChrSrcY: %d lastChrSrcY: %d lastInChrBuf: %d\n",
423  firstChrSrcY, lastChrSrcY, lastInChrBuf);
424 
425  // Do we have enough lines in this slice to output the dstY line
426  enough_lines = lastLumSrcY2 < srcSliceY + srcSliceH &&
427  lastChrSrcY < AV_CEIL_RSHIFT(srcSliceY + srcSliceH, c->chrSrcVSubSample);
428 
429  if (!enough_lines) {
430  lastLumSrcY = srcSliceY + srcSliceH - 1;
431  lastChrSrcY = chrSrcSliceY + chrSrcSliceH - 1;
432  DEBUG_BUFFERS("buffering slice: lastLumSrcY %d lastChrSrcY %d\n",
433  lastLumSrcY, lastChrSrcY);
434  }
435 
436  posY = hout_slice->plane[0].sliceY + hout_slice->plane[0].sliceH;
437  if (posY <= lastLumSrcY && !hasLumHoles) {
438  firstPosY = FFMAX(firstLumSrcY, posY);
439  lastPosY = FFMIN(lastLumSrcY + MAX_LINES_AHEAD, srcSliceY + srcSliceH - 1);
440  } else {
441  firstPosY = lastInLumBuf + 1;
442  lastPosY = lastLumSrcY;
443  }
444 
445  cPosY = hout_slice->plane[1].sliceY + hout_slice->plane[1].sliceH;
446  if (cPosY <= lastChrSrcY && !hasChrHoles) {
447  firstCPosY = FFMAX(firstChrSrcY, cPosY);
448  lastCPosY = FFMIN(lastChrSrcY + MAX_LINES_AHEAD, AV_CEIL_RSHIFT(srcSliceY + srcSliceH, c->chrSrcVSubSample) - 1);
449  } else {
450  firstCPosY = lastInChrBuf + 1;
451  lastCPosY = lastChrSrcY;
452  }
453 
454  ff_rotate_slice(hout_slice, lastPosY, lastCPosY);
455 
456  if (posY < lastLumSrcY + 1) {
457  for (i = lumStart; i < lumEnd; ++i)
458  desc[i].process(c, &desc[i], firstPosY, lastPosY - firstPosY + 1);
459  }
460 
461  lumBufIndex += lastLumSrcY - lastInLumBuf;
462  lastInLumBuf = lastLumSrcY;
463 
464  if (cPosY < lastChrSrcY + 1) {
465  for (i = chrStart; i < chrEnd; ++i)
466  desc[i].process(c, &desc[i], firstCPosY, lastCPosY - firstCPosY + 1);
467  }
468 
469  chrBufIndex += lastChrSrcY - lastInChrBuf;
470  lastInChrBuf = lastChrSrcY;
471 
472  // wrap buf index around to stay inside the ring buffer
473  if (lumBufIndex >= vLumFilterSize)
474  lumBufIndex -= vLumFilterSize;
475  if (chrBufIndex >= vChrFilterSize)
476  chrBufIndex -= vChrFilterSize;
477  if (!enough_lines)
478  break; // we can't output a dstY line so let's try with the next slice
479 
480 #if HAVE_MMX_INLINE
481  ff_updateMMXDitherTables(c, dstY, lumBufIndex, chrBufIndex,
482  lastInLumBuf, lastInChrBuf);
483 #endif
484  if (should_dither) {
485  c->chrDither8 = ff_dither_8x8_128[chrDstY & 7];
486  c->lumDither8 = ff_dither_8x8_128[dstY & 7];
487  }
488  if (dstY >= dstH - 2) {
489  /* hmm looks like we can't use MMX here without overwriting
490  * this array's tail */
491  ff_sws_init_output_funcs(c, &yuv2plane1, &yuv2planeX, &yuv2nv12cX,
492  &yuv2packed1, &yuv2packed2, &yuv2packedX, &yuv2anyX);
493  use_mmx_vfilter= 0;
494  ff_init_vscale_pfn(c, yuv2plane1, yuv2planeX, yuv2nv12cX,
495  yuv2packed1, yuv2packed2, yuv2packedX, yuv2anyX, use_mmx_vfilter);
496  }
497 
498  {
499  for (i = vStart; i < vEnd; ++i)
500  desc[i].process(c, &desc[i], dstY, 1);
501  }
502  }
503  if (isPlanar(dstFormat) && isALPHA(dstFormat) && !needAlpha) {
504  int length = dstW;
505  int height = dstY - lastDstY;
506 
507  if (is16BPS(dstFormat) || isNBPS(dstFormat)) {
508  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(dstFormat);
509  fillPlane16(dst[3], dstStride[3], length, height, lastDstY,
510  1, desc->comp[3].depth,
511  isBE(dstFormat));
512  } else
513  fillPlane(dst[3], dstStride[3], length, height, lastDstY, 255);
514  }
515 
516 #if HAVE_MMXEXT_INLINE
518  __asm__ volatile ("sfence" ::: "memory");
519 #endif
520  emms_c();
521 
522  /* store changed local vars back in the context */
523  c->dstY = dstY;
524  c->lumBufIndex = lumBufIndex;
525  c->chrBufIndex = chrBufIndex;
526  c->lastInLumBuf = lastInLumBuf;
527  c->lastInChrBuf = lastInChrBuf;
528 
529  return dstY - lastDstY;
530 }
531 
533 {
534  c->lumConvertRange = NULL;
535  c->chrConvertRange = NULL;
536  if (c->srcRange != c->dstRange && !isAnyRGB(c->dstFormat)) {
537  if (c->dstBpc <= 14) {
538  if (c->srcRange) {
541  } else {
544  }
545  } else {
546  if (c->srcRange) {
549  } else {
552  }
553  }
554  }
555 }
556 
558 {
559  enum AVPixelFormat srcFormat = c->srcFormat;
560 
562  &c->yuv2nv12cX, &c->yuv2packed1,
563  &c->yuv2packed2, &c->yuv2packedX, &c->yuv2anyX);
564 
566 
567 
568  if (c->srcBpc == 8) {
569  if (c->dstBpc <= 14) {
570  c->hyScale = c->hcScale = hScale8To15_c;
571  if (c->flags & SWS_FAST_BILINEAR) {
574  }
575  } else {
576  c->hyScale = c->hcScale = hScale8To19_c;
577  }
578  } else {
579  c->hyScale = c->hcScale = c->dstBpc > 14 ? hScale16To19_c
580  : hScale16To15_c;
581  }
582 
584 
585  if (!(isGray(srcFormat) || isGray(c->dstFormat) ||
586  srcFormat == AV_PIX_FMT_MONOBLACK || srcFormat == AV_PIX_FMT_MONOWHITE))
587  c->needs_hcscale = 1;
588 }
589 
591 {
592  sws_init_swscale(c);
593 
594  if (ARCH_PPC)
596  if (ARCH_X86)
598  if (ARCH_AARCH64)
600  if (ARCH_ARM)
602 
603  return swscale;
604 }
605 
606 static void reset_ptr(const uint8_t *src[], enum AVPixelFormat format)
607 {
608  if (!isALPHA(format))
609  src[3] = NULL;
610  if (!isPlanar(format)) {
611  src[3] = src[2] = NULL;
612 
613  if (!usePal(format))
614  src[1] = NULL;
615  }
616 }
617 
618 static int check_image_pointers(const uint8_t * const data[4], enum AVPixelFormat pix_fmt,
619  const int linesizes[4])
620 {
621  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
622  int i;
623 
624  av_assert2(desc);
625 
626  for (i = 0; i < 4; i++) {
627  int plane = desc->comp[i].plane;
628  if (!data[plane] || !linesizes[plane])
629  return 0;
630  }
631 
632  return 1;
633 }
634 
635 static void xyz12Torgb48(struct SwsContext *c, uint16_t *dst,
636  const uint16_t *src, int stride, int h)
637 {
638  int xp,yp;
640 
641  for (yp=0; yp<h; yp++) {
642  for (xp=0; xp+2<stride; xp+=3) {
643  int x, y, z, r, g, b;
644 
645  if (desc->flags & AV_PIX_FMT_FLAG_BE) {
646  x = AV_RB16(src + xp + 0);
647  y = AV_RB16(src + xp + 1);
648  z = AV_RB16(src + xp + 2);
649  } else {
650  x = AV_RL16(src + xp + 0);
651  y = AV_RL16(src + xp + 1);
652  z = AV_RL16(src + xp + 2);
653  }
654 
655  x = c->xyzgamma[x>>4];
656  y = c->xyzgamma[y>>4];
657  z = c->xyzgamma[z>>4];
658 
659  // convert from XYZlinear to sRGBlinear
660  r = c->xyz2rgb_matrix[0][0] * x +
661  c->xyz2rgb_matrix[0][1] * y +
662  c->xyz2rgb_matrix[0][2] * z >> 12;
663  g = c->xyz2rgb_matrix[1][0] * x +
664  c->xyz2rgb_matrix[1][1] * y +
665  c->xyz2rgb_matrix[1][2] * z >> 12;
666  b = c->xyz2rgb_matrix[2][0] * x +
667  c->xyz2rgb_matrix[2][1] * y +
668  c->xyz2rgb_matrix[2][2] * z >> 12;
669 
670  // limit values to 12-bit depth
671  r = av_clip_uintp2(r, 12);
672  g = av_clip_uintp2(g, 12);
673  b = av_clip_uintp2(b, 12);
674 
675  // convert from sRGBlinear to RGB and scale from 12bit to 16bit
676  if (desc->flags & AV_PIX_FMT_FLAG_BE) {
677  AV_WB16(dst + xp + 0, c->rgbgamma[r] << 4);
678  AV_WB16(dst + xp + 1, c->rgbgamma[g] << 4);
679  AV_WB16(dst + xp + 2, c->rgbgamma[b] << 4);
680  } else {
681  AV_WL16(dst + xp + 0, c->rgbgamma[r] << 4);
682  AV_WL16(dst + xp + 1, c->rgbgamma[g] << 4);
683  AV_WL16(dst + xp + 2, c->rgbgamma[b] << 4);
684  }
685  }
686  src += stride;
687  dst += stride;
688  }
689 }
690 
691 static void rgb48Toxyz12(struct SwsContext *c, uint16_t *dst,
692  const uint16_t *src, int stride, int h)
693 {
694  int xp,yp;
696 
697  for (yp=0; yp<h; yp++) {
698  for (xp=0; xp+2<stride; xp+=3) {
699  int x, y, z, r, g, b;
700 
701  if (desc->flags & AV_PIX_FMT_FLAG_BE) {
702  r = AV_RB16(src + xp + 0);
703  g = AV_RB16(src + xp + 1);
704  b = AV_RB16(src + xp + 2);
705  } else {
706  r = AV_RL16(src + xp + 0);
707  g = AV_RL16(src + xp + 1);
708  b = AV_RL16(src + xp + 2);
709  }
710 
711  r = c->rgbgammainv[r>>4];
712  g = c->rgbgammainv[g>>4];
713  b = c->rgbgammainv[b>>4];
714 
715  // convert from sRGBlinear to XYZlinear
716  x = c->rgb2xyz_matrix[0][0] * r +
717  c->rgb2xyz_matrix[0][1] * g +
718  c->rgb2xyz_matrix[0][2] * b >> 12;
719  y = c->rgb2xyz_matrix[1][0] * r +
720  c->rgb2xyz_matrix[1][1] * g +
721  c->rgb2xyz_matrix[1][2] * b >> 12;
722  z = c->rgb2xyz_matrix[2][0] * r +
723  c->rgb2xyz_matrix[2][1] * g +
724  c->rgb2xyz_matrix[2][2] * b >> 12;
725 
726  // limit values to 12-bit depth
727  x = av_clip_uintp2(x, 12);
728  y = av_clip_uintp2(y, 12);
729  z = av_clip_uintp2(z, 12);
730 
731  // convert from XYZlinear to X'Y'Z' and scale from 12bit to 16bit
732  if (desc->flags & AV_PIX_FMT_FLAG_BE) {
733  AV_WB16(dst + xp + 0, c->xyzgammainv[x] << 4);
734  AV_WB16(dst + xp + 1, c->xyzgammainv[y] << 4);
735  AV_WB16(dst + xp + 2, c->xyzgammainv[z] << 4);
736  } else {
737  AV_WL16(dst + xp + 0, c->xyzgammainv[x] << 4);
738  AV_WL16(dst + xp + 1, c->xyzgammainv[y] << 4);
739  AV_WL16(dst + xp + 2, c->xyzgammainv[z] << 4);
740  }
741  }
742  src += stride;
743  dst += stride;
744  }
745 }
746 
747 /**
748  * swscale wrapper, so we don't need to export the SwsContext.
749  * Assumes planar YUV to be in YUV order instead of YVU.
750  */
751 int attribute_align_arg sws_scale(struct SwsContext *c,
752  const uint8_t * const srcSlice[],
753  const int srcStride[], int srcSliceY,
754  int srcSliceH, uint8_t *const dst[],
755  const int dstStride[])
756 {
757  int i, ret;
758  const uint8_t *src2[4];
759  uint8_t *dst2[4];
760  uint8_t *rgb0_tmp = NULL;
761  int macro_height = isBayer(c->srcFormat) ? 2 : (1 << c->chrSrcVSubSample);
762 
763  if (!srcStride || !dstStride || !dst || !srcSlice) {
764  av_log(c, AV_LOG_ERROR, "One of the input parameters to sws_scale() is NULL, please check the calling code\n");
765  return 0;
766  }
767 
768  if ((srcSliceY & (macro_height-1)) ||
769  ((srcSliceH& (macro_height-1)) && srcSliceY + srcSliceH != c->srcH) ||
770  srcSliceY + srcSliceH > c->srcH) {
771  av_log(c, AV_LOG_ERROR, "Slice parameters %d, %d are invalid\n", srcSliceY, srcSliceH);
772  return AVERROR(EINVAL);
773  }
774 
775  if (c->gamma_flag && c->cascaded_context[0]) {
776 
777 
778  ret = sws_scale(c->cascaded_context[0],
779  srcSlice, srcStride, srcSliceY, srcSliceH,
781 
782  if (ret < 0)
783  return ret;
784 
785  if (c->cascaded_context[2])
786  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);
787  else
788  ret = sws_scale(c->cascaded_context[1], (const uint8_t * const *)c->cascaded_tmp, c->cascaded_tmpStride, srcSliceY, srcSliceH, dst, dstStride);
789 
790  if (ret < 0)
791  return ret;
792 
793  if (c->cascaded_context[2]) {
794  ret = sws_scale(c->cascaded_context[2],
795  (const uint8_t * const *)c->cascaded1_tmp, c->cascaded1_tmpStride, c->cascaded_context[1]->dstY - ret, c->cascaded_context[1]->dstY,
796  dst, dstStride);
797  }
798  return ret;
799  }
800 
801  if (c->cascaded_context[0] && srcSliceY == 0 && srcSliceH == c->cascaded_context[0]->srcH) {
802  ret = sws_scale(c->cascaded_context[0],
803  srcSlice, srcStride, srcSliceY, srcSliceH,
805  if (ret < 0)
806  return ret;
807  ret = sws_scale(c->cascaded_context[1],
808  (const uint8_t * const * )c->cascaded_tmp, c->cascaded_tmpStride, 0, c->cascaded_context[0]->dstH,
809  dst, dstStride);
810  return ret;
811  }
812 
813  memcpy(src2, srcSlice, sizeof(src2));
814  memcpy(dst2, dst, sizeof(dst2));
815 
816  // do not mess up sliceDir if we have a "trailing" 0-size slice
817  if (srcSliceH == 0)
818  return 0;
819 
820  if (!check_image_pointers(srcSlice, c->srcFormat, srcStride)) {
821  av_log(c, AV_LOG_ERROR, "bad src image pointers\n");
822  return 0;
823  }
824  if (!check_image_pointers((const uint8_t* const*)dst, c->dstFormat, dstStride)) {
825  av_log(c, AV_LOG_ERROR, "bad dst image pointers\n");
826  return 0;
827  }
828 
829  if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
830  av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");
831  return 0;
832  }
833  if (c->sliceDir == 0) {
834  if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;
835  }
836 
837  if (usePal(c->srcFormat)) {
838  for (i = 0; i < 256; i++) {
839  int r, g, b, y, u, v, a = 0xff;
840  if (c->srcFormat == AV_PIX_FMT_PAL8) {
841  uint32_t p = ((const uint32_t *)(srcSlice[1]))[i];
842  a = (p >> 24) & 0xFF;
843  r = (p >> 16) & 0xFF;
844  g = (p >> 8) & 0xFF;
845  b = p & 0xFF;
846  } else if (c->srcFormat == AV_PIX_FMT_RGB8) {
847  r = ( i >> 5 ) * 36;
848  g = ((i >> 2) & 7) * 36;
849  b = ( i & 3) * 85;
850  } else if (c->srcFormat == AV_PIX_FMT_BGR8) {
851  b = ( i >> 6 ) * 85;
852  g = ((i >> 3) & 7) * 36;
853  r = ( i & 7) * 36;
854  } else if (c->srcFormat == AV_PIX_FMT_RGB4_BYTE) {
855  r = ( i >> 3 ) * 255;
856  g = ((i >> 1) & 3) * 85;
857  b = ( i & 1) * 255;
858  } else if (c->srcFormat == AV_PIX_FMT_GRAY8 || c->srcFormat == AV_PIX_FMT_GRAY8A) {
859  r = g = b = i;
860  } else {
862  b = ( i >> 3 ) * 255;
863  g = ((i >> 1) & 3) * 85;
864  r = ( i & 1) * 255;
865  }
866 #define RGB2YUV_SHIFT 15
867 #define BY ( (int) (0.114 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
868 #define BV (-(int) (0.081 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
869 #define BU ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
870 #define GY ( (int) (0.587 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
871 #define GV (-(int) (0.419 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
872 #define GU (-(int) (0.331 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
873 #define RY ( (int) (0.299 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
874 #define RV ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
875 #define RU (-(int) (0.169 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
876 
877  y = av_clip_uint8((RY * r + GY * g + BY * b + ( 33 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
878  u = av_clip_uint8((RU * r + GU * g + BU * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
879  v = av_clip_uint8((RV * r + GV * g + BV * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
880  c->pal_yuv[i]= y + (u<<8) + (v<<16) + ((unsigned)a<<24);
881 
882  switch (c->dstFormat) {
883  case AV_PIX_FMT_BGR32:
884 #if !HAVE_BIGENDIAN
885  case AV_PIX_FMT_RGB24:
886 #endif
887  c->pal_rgb[i]= r + (g<<8) + (b<<16) + ((unsigned)a<<24);
888  break;
889  case AV_PIX_FMT_BGR32_1:
890 #if HAVE_BIGENDIAN
891  case AV_PIX_FMT_BGR24:
892 #endif
893  c->pal_rgb[i]= a + (r<<8) + (g<<16) + ((unsigned)b<<24);
894  break;
895  case AV_PIX_FMT_RGB32_1:
896 #if HAVE_BIGENDIAN
897  case AV_PIX_FMT_RGB24:
898 #endif
899  c->pal_rgb[i]= a + (b<<8) + (g<<16) + ((unsigned)r<<24);
900  break;
901  case AV_PIX_FMT_RGB32:
902 #if !HAVE_BIGENDIAN
903  case AV_PIX_FMT_BGR24:
904 #endif
905  default:
906  c->pal_rgb[i]= b + (g<<8) + (r<<16) + ((unsigned)a<<24);
907  }
908  }
909  }
910 
911  if (c->src0Alpha && !c->dst0Alpha && isALPHA(c->dstFormat)) {
912  uint8_t *base;
913  int x,y;
914  rgb0_tmp = av_malloc(FFABS(srcStride[0]) * srcSliceH + 32);
915  if (!rgb0_tmp)
916  return AVERROR(ENOMEM);
917 
918  base = srcStride[0] < 0 ? rgb0_tmp - srcStride[0] * (srcSliceH-1) : rgb0_tmp;
919  for (y=0; y<srcSliceH; y++){
920  memcpy(base + srcStride[0]*y, src2[0] + srcStride[0]*y, 4*c->srcW);
921  for (x=c->src0Alpha-1; x<4*c->srcW; x+=4) {
922  base[ srcStride[0]*y + x] = 0xFF;
923  }
924  }
925  src2[0] = base;
926  }
927 
928  if (c->srcXYZ && !(c->dstXYZ && c->srcW==c->dstW && c->srcH==c->dstH)) {
929  uint8_t *base;
930  rgb0_tmp = av_malloc(FFABS(srcStride[0]) * srcSliceH + 32);
931  if (!rgb0_tmp)
932  return AVERROR(ENOMEM);
933 
934  base = srcStride[0] < 0 ? rgb0_tmp - srcStride[0] * (srcSliceH-1) : rgb0_tmp;
935 
936  xyz12Torgb48(c, (uint16_t*)base, (const uint16_t*)src2[0], srcStride[0]/2, srcSliceH);
937  src2[0] = base;
938  }
939 
940  if (!srcSliceY && (c->flags & SWS_BITEXACT) && c->dither == SWS_DITHER_ED && c->dither_error[0])
941  for (i = 0; i < 4; i++)
942  memset(c->dither_error[i], 0, sizeof(c->dither_error[0][0]) * (c->dstW+2));
943 
944 
945  // copy strides, so they can safely be modified
946  if (c->sliceDir == 1) {
947  // slices go from top to bottom
948  int srcStride2[4] = { srcStride[0], srcStride[1], srcStride[2],
949  srcStride[3] };
950  int dstStride2[4] = { dstStride[0], dstStride[1], dstStride[2],
951  dstStride[3] };
952 
953  reset_ptr(src2, c->srcFormat);
954  reset_ptr((void*)dst2, c->dstFormat);
955 
956  /* reset slice direction at end of frame */
957  if (srcSliceY + srcSliceH == c->srcH)
958  c->sliceDir = 0;
959 
960  ret = c->swscale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2,
961  dstStride2);
962  } else {
963  // slices go from bottom to top => we flip the image internally
964  int srcStride2[4] = { -srcStride[0], -srcStride[1], -srcStride[2],
965  -srcStride[3] };
966  int dstStride2[4] = { -dstStride[0], -dstStride[1], -dstStride[2],
967  -dstStride[3] };
968 
969  src2[0] += (srcSliceH - 1) * srcStride[0];
970  if (!usePal(c->srcFormat))
971  src2[1] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[1];
972  src2[2] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[2];
973  src2[3] += (srcSliceH - 1) * srcStride[3];
974  dst2[0] += ( c->dstH - 1) * dstStride[0];
975  dst2[1] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[1];
976  dst2[2] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[2];
977  dst2[3] += ( c->dstH - 1) * dstStride[3];
978 
979  reset_ptr(src2, c->srcFormat);
980  reset_ptr((void*)dst2, c->dstFormat);
981 
982  /* reset slice direction at end of frame */
983  if (!srcSliceY)
984  c->sliceDir = 0;
985 
986  ret = c->swscale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH,
987  srcSliceH, dst2, dstStride2);
988  }
989 
990 
991  if (c->dstXYZ && !(c->srcXYZ && c->srcW==c->dstW && c->srcH==c->dstH)) {
992  /* replace on the same data */
993  rgb48Toxyz12(c, (uint16_t*)dst2[0], (const uint16_t*)dst2[0], dstStride[0]/2, ret);
994  }
995 
996  av_free(rgb0_tmp);
997  return ret;
998 }
int plane
Definition: avisynth_c.h:291
#define BU
int plane
Which of the 4 planes contains the component.
Definition: pixdesc.h:35
#define NULL
Definition: coverity.c:32
const char const char void * val
Definition: avisynth_c.h:634
int chrBufIndex
Index in ring buffer of the last scaled horizontal chroma line from source.
static void lumRangeToJpeg_c(int16_t *dst, int width)
Definition: swscale.c:172
void(* hcscale_fast)(struct SwsContext *c, int16_t *dst1, int16_t *dst2, int dstWidth, const uint8_t *src1, const uint8_t *src2, int srcW, int xInc)
av_cold void ff_sws_init_output_funcs(SwsContext *c, yuv2planar1_fn *yuv2plane1, yuv2planarX_fn *yuv2planeX, yuv2interleavedX_fn *yuv2nv12cX, yuv2packed1_fn *yuv2packed1, yuv2packed2_fn *yuv2packed2, yuv2packedX_fn *yuv2packedX, yuv2anyX_fn *yuv2anyX)
Definition: output.c:2076
static enum AVPixelFormat pix_fmt
static void chrRangeFromJpeg_c(int16_t *dstU, int16_t *dstV, int width)
Definition: swscale.c:163
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2193
int chrSrcH
Height of source chroma planes.
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
static void reset_ptr(const uint8_t *src[], enum AVPixelFormat format)
Definition: swscale.c:606
uint32_t pal_rgb[256]
misc image utilities
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
int16_t * rgbgamma
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:64
#define GU
const char * g
Definition: vf_curves.c:108
const char * desc
Definition: nvenc.c:237
int ff_init_slice_from_src(SwsSlice *s, uint8_t *src[4], int stride[4], int srcW, int lumY, int lumH, int chrY, int chrH, int relative)
Definition: slice.c:147
int vChrDrop
Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user...
static void lumRangeToJpeg16_c(int16_t *_dst, int width)
Definition: swscale.c:208
Struct which holds all necessary data for processing a slice.
int16_t * rgbgammainv
const char * b
Definition: vf_curves.c:109
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:53
#define RU
static av_always_inline int is16BPS(enum AVPixelFormat pix_fmt)
external API header
int16_t * xyzgammainv
int srcRange
0 = MPG YUV range, 1 = JPG YUV range (source image).
const uint8_t * lumDither8
#define BY
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_RB16
Definition: bytestream.h:87
#define SWS_PRINT_INFO
Definition: swscale.h:73
int dstY
Last destination vertical line output from last slice.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_RL16
Definition: bytestream.h:87
void ff_sws_init_input_funcs(SwsContext *c)
int srcH
Height of source luma/alpha planes.
packed RGB 1:2:1, 8bpp, (msb)1B 2G 1R(lsb)
Definition: pixfmt.h:86
static void rgb48Toxyz12(struct SwsContext *c, uint16_t *dst, const uint16_t *src, int stride, int h)
Definition: swscale.c:691
static void hScale16To19_c(SwsContext *c, int16_t *_dst, int dstW, const uint8_t *_src, const int16_t *filter, const int32_t *filterPos, int filterSize)
Definition: swscale.c:66
int ff_rotate_slice(SwsSlice *s, int lum, int chr)
Definition: slice.c:119
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
int chrDstVSubSample
Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in destination i...
void(* yuv2interleavedX_fn)(struct SwsContext *c, const int16_t *chrFilter, int chrFilterSize, const int16_t **chrUSrc, const int16_t **chrVSrc, uint8_t *dest, int dstW)
Write one line of horizontally scaled chroma to interleaved output with multi-point vertical scaling ...
uint8_t bits
Definition: crc.c:296
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
static void lumRangeFromJpeg_c(int16_t *dst, int width)
Definition: swscale.c:179
#define av_cold
Definition: attributes.h:82
#define av_malloc(s)
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:63
8 bit with AV_PIX_FMT_RGB32 palette
Definition: pixfmt.h:73
int vChrFilterSize
Vertical filter size for chroma pixels.
void(* yuv2anyX_fn)(struct SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize, const int16_t *chrFilter, const int16_t **chrUSrc, const int16_t **chrVSrc, int chrFilterSize, const int16_t **alpSrc, uint8_t **dest, int dstW, int y)
Write one line of horizontally scaled Y/U/V/A to YUV/RGB output by doing multi-point vertical scaling...
#define AV_CPU_FLAG_MMXEXT
SSE integer functions or AMD MMX ext.
Definition: cpu.h:30
static void filter(int16_t *output, ptrdiff_t out_stride, int16_t *low, ptrdiff_t low_stride, int16_t *high, ptrdiff_t high_stride, int len, uint8_t clip)
Definition: cfhd.c:80
int cascaded_tmpStride[4]
av_cold void ff_sws_init_swscale_x86(SwsContext *c)
Definition: swscale.c:385
#define SWS_FAST_BILINEAR
Definition: swscale.h:56
int lastInLumBuf
Last scaled horizontal luma/alpha line from source in the ring buffer.
int16_t rgb2xyz_matrix[3][4]
#define isAnyRGB(x)
external API header
enum AVPixelFormat dstFormat
Destination pixel format.
#define BV
#define isALPHA(x)
Definition: swscale-test.c:49
#define AV_WB16(p, v)
Definition: intreadwrite.h:405
#define av_log(a,...)
yuv2packedX_fn yuv2packedX
void ff_init_vscale_pfn(SwsContext *c, yuv2planar1_fn yuv2plane1, yuv2planarX_fn yuv2planeX, yuv2interleavedX_fn yuv2nv12cX, yuv2packed1_fn yuv2packed1, yuv2packed2_fn yuv2packed2, yuv2packedX_fn yuv2packedX, yuv2anyX_fn yuv2anyX, int use_mmx)
setup vertical scaler functions
Definition: vscale.c:250
av_cold void ff_sws_init_swscale_aarch64(SwsContext *c)
Definition: swscale.c:32
void(* lumConvertRange)(int16_t *dst, int width)
Color range conversion function for luma plane if needed.
int32_t * vChrFilterPos
Array of vertical filter starting positions for each dst[i] for chroma planes.
#define DEBUG_BUFFERS(...)
Definition: swscale.c:227
int dstH
Height of destination luma/alpha planes.
int * dither_error[4]
void(* yuv2packed1_fn)(struct SwsContext *c, const int16_t *lumSrc, const int16_t *chrUSrc[2], const int16_t *chrVSrc[2], const int16_t *alpSrc, uint8_t *dest, int dstW, int uvalpha, int y)
Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB output without any additional v...
#define U(x)
Definition: vp56_arith.h:37
yuv2anyX_fn yuv2anyX
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
#define AV_PIX_FMT_BGR32_1
Definition: pixfmt.h:318
#define AVERROR(e)
Definition: error.h:43
SwsFunc ff_getSwsFunc(SwsContext *c)
Return function pointer to fastest main scaler path function depending on architecture and available ...
Definition: swscale.c:590
#define RV
static void chrRangeToJpeg_c(int16_t *dstU, int16_t *dstV, int width)
Definition: swscale.c:154
const char * r
Definition: vf_curves.c:107
yuv2packed1_fn yuv2packed1
simple assert() macros that are a bit more flexible than ISO C assert().
static void hScale16To15_c(SwsContext *c, int16_t *dst, int dstW, const uint8_t *_src, const int16_t *filter, const int32_t *filterPos, int filterSize)
Definition: swscale.c:93
GLsizei GLsizei * length
Definition: opengl_enc.c:115
void ff_hcscale_fast_c(SwsContext *c, int16_t *dst1, int16_t *dst2, int dstWidth, const uint8_t *src1, const uint8_t *src2, int srcW, int xInc)
#define FFMAX(a, b)
Definition: common.h:94
static int check_image_pointers(const uint8_t *const data[4], enum AVPixelFormat pix_fmt, const int linesizes[4])
Definition: swscale.c:618
#define isNBPS(x)
uint8_t * cascaded1_tmp[4]
static av_cold void sws_init_swscale(SwsContext *c)
Definition: swscale.c:557
SwsPlane plane[MAX_SLICE_PLANES]
color planes
void(* chrConvertRange)(int16_t *dst1, int16_t *dst2, int width)
Color range conversion function for chroma planes if needed.
int sliceH
number of lines
int16_t * xyzgamma
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
Definition: pixdesc.h:106
static void xyz12Torgb48(struct SwsContext *c, uint16_t *dst, const uint16_t *src, int stride, int h)
Definition: swscale.c:635
av_cold void ff_sws_init_swscale_ppc(SwsContext *c)
int dstRange
0 = MPG YUV range, 1 = JPG YUV range (destination image).
#define RGB2YUV_SHIFT
void(* yuv2planar1_fn)(const int16_t *src, uint8_t *dest, int dstW, const uint8_t *dither, int offset)
Write one line of horizontally scaled data to planar output without any additional vertical scaling (...
alias for AV_PIX_FMT_YA8
Definition: pixfmt.h:157
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
#define FFMIN(a, b)
Definition: common.h:96
#define isBayer(x)
packed RGB 1:2:1, 8bpp, (msb)1R 2G 1B(lsb)
Definition: pixfmt.h:89
#define RY
static av_always_inline int is9_OR_10BPS(enum AVPixelFormat pix_fmt)
yuv2planar1_fn yuv2plane1
yuv2interleavedX_fn yuv2nv12cX
#define width
int(* process)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
int32_t
void(* hcScale)(struct SwsContext *c, int16_t *dst, int dstW, const uint8_t *src, const int16_t *filter, const int32_t *filterPos, int filterSize)
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:65
av_cold void ff_sws_init_range_convert(SwsContext *c)
Definition: swscale.c:532
struct SwsFilterDescriptor * desc
#define src
Definition: vp9dsp.c:530
int dstW
Width of destination luma/alpha planes.
uint8_t * cascaded_tmp[4]
int sliceDir
Direction that slices are fed to the scaler (1 = top-to-bottom, -1 = bottom-to-top).
int cascaded1_tmpStride[4]
int needs_hcscale
Set if there are chroma planes to be converted.
int32_t * vLumFilterPos
Array of vertical filter starting positions for each dst[i] for luma/alpha planes.
#define AV_PIX_FMT_BGR32
Definition: pixfmt.h:317
static av_always_inline int isBE(enum AVPixelFormat pix_fmt)
packed RGB 3:3:2, 8bpp, (msb)2B 3G 3R(lsb)
Definition: pixfmt.h:84
int width
Slice line width.
int16_t xyz2rgb_matrix[3][4]
static av_always_inline int isPlanar(enum AVPixelFormat pix_fmt)
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
yuv2planarX_fn yuv2planeX
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:315
static const char * format
Definition: movenc-test.c:47
const uint8_t ff_dither_8x8_128[9][8]
Definition: swscale.c:39
Struct which defines a slice of an image to be scaled or an output for a scaled slice.
struct SwsSlice * slice
int attribute_align_arg sws_scale(struct SwsContext *c, const uint8_t *const srcSlice[], const int srcStride[], int srcSliceY, int srcSliceH, uint8_t *const dst[], const int dstStride[])
swscale wrapper, so we don't need to export the SwsContext.
Definition: swscale.c:751
static av_always_inline void fillPlane(uint8_t *plane, int stride, int width, int height, int y, uint8_t val)
Definition: swscale.c:55
static void lumRangeFromJpeg16_c(int16_t *_dst, int width)
Definition: swscale.c:217
int(* SwsFunc)(struct SwsContext *context, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
void ff_hyscale_fast_c(SwsContext *c, int16_t *dst, int dstWidth, const uint8_t *src, int srcW, int xInc)
int vLumFilterSize
Vertical filter size for luma/alpha pixels.
byte swapping routines
#define u(width,...)
#define isGray(x)
Definition: swscale-test.c:38
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:76
static void fillPlane16(uint8_t *plane, int stride, int width, int height, int y, int alpha, int bits, const int big_endian)
const uint8_t * chrDither8
static void chrRangeToJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width)
Definition: swscale.c:186
static int flags
Definition: cpu.c:47
#define SWS_BITEXACT
Definition: swscale.h:82
int lumBufIndex
Index in ring buffer of the last scaled horizontal luma/alpha line from source.
static int swscale(SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
Definition: swscale.c:231
SwsDither dither
Y , 1bpp, 0 is black, 1 is white, in each byte pixels are ordered from the msb to the lsb...
Definition: pixfmt.h:72
int lastInChrBuf
Last scaled horizontal chroma line from source in the ring buffer.
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:105
yuv2packed2_fn yuv2packed2
Y , 8bpp.
Definition: pixfmt.h:70
#define GY
void(* yuv2planarX_fn)(const int16_t *filter, int filterSize, const int16_t **src, uint8_t *dest, int dstW, const uint8_t *dither, int offset)
Write one line of horizontally scaled data to planar output with multi-point vertical scaling between...
void(* yuv2packed2_fn)(struct SwsContext *c, const int16_t *lumSrc[2], const int16_t *chrUSrc[2], const int16_t *chrVSrc[2], const int16_t *alpSrc[2], uint8_t *dest, int dstW, int yalpha, int uvalpha, int y)
Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB output by doing bilinear scalin...
Y , 1bpp, 0 is white, 1 is black, in each byte pixels are ordered from the msb to the lsb...
Definition: pixfmt.h:71
static double c[64]
void(* yuv2packedX_fn)(struct SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize, const int16_t *chrFilter, const int16_t **chrUSrc, const int16_t **chrVSrc, int chrFilterSize, const int16_t **alpSrc, uint8_t *dest, int dstW, int y)
Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB output by doing multi-point ver...
#define AV_WL16(p, v)
Definition: intreadwrite.h:412
enum AVPixelFormat srcFormat
Source pixel format.
packed RGB 3:3:2, 8bpp, (msb)2R 3G 3B(lsb)
Definition: pixfmt.h:87
void(* hyscale_fast)(struct SwsContext *c, int16_t *dst, int dstWidth, const uint8_t *src, int srcW, int xInc)
Scale one horizontal line of input data using a bilinear filter to produce one line of output data...
struct SwsContext * cascaded_context[3]
#define AV_PIX_FMT_FLAG_BE
Pixel format is big-endian.
Definition: pixdesc.h:128
SwsFunc swscale
Note that src, dst, srcStride, dstStride will be copied in the sws_scale() wrapper so they can be fre...
#define GV
#define av_free(p)
void ff_updateMMXDitherTables(SwsContext *c, int dstY, int lumBufIndex, int chrBufIndex, int lastInLumBuf, int lastInChrBuf)
#define AV_PIX_FMT_RGB32_1
Definition: pixfmt.h:316
#define MAX_LINES_AHEAD
static void chrRangeFromJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width)
Definition: swscale.c:197
#define AV_CPU_FLAG_SSE2
PIV SSE2 functions.
Definition: cpu.h:34
static const uint8_t sws_pb_64[8]
Definition: swscale.c:51
#define av_always_inline
Definition: attributes.h:39
static av_always_inline int usePal(enum AVPixelFormat pix_fmt)
#define stride
#define height
static void hScale8To15_c(SwsContext *c, int16_t *dst, int dstW, const uint8_t *src, const int16_t *filter, const int32_t *filterPos, int filterSize)
Definition: swscale.c:119
int sliceY
index of first line
#define isPacked(x)
int depth
Number of bits in the component.
Definition: pixdesc.h:58
int srcW
Width of source luma/alpha planes.
int chrSrcVSubSample
Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in source image...
int flags
Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc...
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
uint32_t pal_yuv[256]
void(* hyScale)(struct SwsContext *c, int16_t *dst, int dstW, const uint8_t *src, const int16_t *filter, const int32_t *filterPos, int filterSize)
Scale one horizontal line of input data using a filter over the input lines, to produce one (differen...
av_cold void ff_sws_init_swscale_arm(SwsContext *c)
Definition: swscale.c:32
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
static void hScale8To19_c(SwsContext *c, int16_t *_dst, int dstW, const uint8_t *src, const int16_t *filter, const int32_t *filterPos, int filterSize)
Definition: swscale.c:135