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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  } else if (desc->flags & AV_PIX_FMT_FLAG_FLOAT) { /* float input are process like uint 16bpc */
80  sh = 16 - 1 - 4;
81  }
82 
83  for (i = 0; i < dstW; i++) {
84  int j;
85  int srcPos = filterPos[i];
86  int val = 0;
87 
88  for (j = 0; j < filterSize; j++) {
89  val += src[srcPos + j] * filter[filterSize * i + j];
90  }
91  // filter=14 bit, input=16 bit, output=30 bit, >> 11 makes 19 bit
92  dst[i] = FFMIN(val >> sh, (1 << 19) - 1);
93  }
94 }
95 
96 static void hScale16To15_c(SwsContext *c, int16_t *dst, int dstW,
97  const uint8_t *_src, const int16_t *filter,
98  const int32_t *filterPos, int filterSize)
99 {
101  int i;
102  const uint16_t *src = (const uint16_t *) _src;
103  int sh = desc->comp[0].depth - 1;
104 
105  if (sh<15) {
106  sh = isAnyRGB(c->srcFormat) || c->srcFormat==AV_PIX_FMT_PAL8 ? 13 : (desc->comp[0].depth - 1);
107  } else if (desc->flags & AV_PIX_FMT_FLAG_FLOAT) { /* float input are process like uint 16bpc */
108  sh = 16 - 1;
109  }
110 
111  for (i = 0; i < dstW; i++) {
112  int j;
113  int srcPos = filterPos[i];
114  int val = 0;
115 
116  for (j = 0; j < filterSize; j++) {
117  val += src[srcPos + j] * filter[filterSize * i + j];
118  }
119  // filter=14 bit, input=16 bit, output=30 bit, >> 15 makes 15 bit
120  dst[i] = FFMIN(val >> sh, (1 << 15) - 1);
121  }
122 }
123 
124 // bilinear / bicubic scaling
125 static void hScale8To15_c(SwsContext *c, int16_t *dst, int dstW,
126  const uint8_t *src, const int16_t *filter,
127  const int32_t *filterPos, int filterSize)
128 {
129  int i;
130  for (i = 0; i < dstW; i++) {
131  int j;
132  int srcPos = filterPos[i];
133  int val = 0;
134  for (j = 0; j < filterSize; j++) {
135  val += ((int)src[srcPos + j]) * filter[filterSize * i + j];
136  }
137  dst[i] = FFMIN(val >> 7, (1 << 15) - 1); // the cubic equation does overflow ...
138  }
139 }
140 
141 static void hScale8To19_c(SwsContext *c, int16_t *_dst, int dstW,
142  const uint8_t *src, const int16_t *filter,
143  const int32_t *filterPos, int filterSize)
144 {
145  int i;
146  int32_t *dst = (int32_t *) _dst;
147  for (i = 0; i < dstW; i++) {
148  int j;
149  int srcPos = filterPos[i];
150  int val = 0;
151  for (j = 0; j < filterSize; j++) {
152  val += ((int)src[srcPos + j]) * filter[filterSize * i + j];
153  }
154  dst[i] = FFMIN(val >> 3, (1 << 19) - 1); // the cubic equation does overflow ...
155  }
156 }
157 
158 // FIXME all pal and rgb srcFormats could do this conversion as well
159 // FIXME all scalers more complex than bilinear could do half of this transform
160 static void chrRangeToJpeg_c(int16_t *dstU, int16_t *dstV, int width)
161 {
162  int i;
163  for (i = 0; i < width; i++) {
164  dstU[i] = (FFMIN(dstU[i], 30775) * 4663 - 9289992) >> 12; // -264
165  dstV[i] = (FFMIN(dstV[i], 30775) * 4663 - 9289992) >> 12; // -264
166  }
167 }
168 
169 static void chrRangeFromJpeg_c(int16_t *dstU, int16_t *dstV, int width)
170 {
171  int i;
172  for (i = 0; i < width; i++) {
173  dstU[i] = (dstU[i] * 1799 + 4081085) >> 11; // 1469
174  dstV[i] = (dstV[i] * 1799 + 4081085) >> 11; // 1469
175  }
176 }
177 
178 static void lumRangeToJpeg_c(int16_t *dst, int width)
179 {
180  int i;
181  for (i = 0; i < width; i++)
182  dst[i] = (FFMIN(dst[i], 30189) * 19077 - 39057361) >> 14;
183 }
184 
185 static void lumRangeFromJpeg_c(int16_t *dst, int width)
186 {
187  int i;
188  for (i = 0; i < width; i++)
189  dst[i] = (dst[i] * 14071 + 33561947) >> 14;
190 }
191 
192 static void chrRangeToJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width)
193 {
194  int i;
195  int32_t *dstU = (int32_t *) _dstU;
196  int32_t *dstV = (int32_t *) _dstV;
197  for (i = 0; i < width; i++) {
198  dstU[i] = (FFMIN(dstU[i], 30775 << 4) * 4663 - (9289992 << 4)) >> 12; // -264
199  dstV[i] = (FFMIN(dstV[i], 30775 << 4) * 4663 - (9289992 << 4)) >> 12; // -264
200  }
201 }
202 
203 static void chrRangeFromJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width)
204 {
205  int i;
206  int32_t *dstU = (int32_t *) _dstU;
207  int32_t *dstV = (int32_t *) _dstV;
208  for (i = 0; i < width; i++) {
209  dstU[i] = (dstU[i] * 1799 + (4081085 << 4)) >> 11; // 1469
210  dstV[i] = (dstV[i] * 1799 + (4081085 << 4)) >> 11; // 1469
211  }
212 }
213 
214 static void lumRangeToJpeg16_c(int16_t *_dst, int width)
215 {
216  int i;
217  int32_t *dst = (int32_t *) _dst;
218  for (i = 0; i < width; i++) {
219  dst[i] = ((int)(FFMIN(dst[i], 30189 << 4) * 4769U - (39057361 << 2))) >> 12;
220  }
221 }
222 
223 static void lumRangeFromJpeg16_c(int16_t *_dst, int width)
224 {
225  int i;
226  int32_t *dst = (int32_t *) _dst;
227  for (i = 0; i < width; i++)
228  dst[i] = (dst[i]*(14071/4) + (33561947<<4)/4)>>12;
229 }
230 
231 
232 #define DEBUG_SWSCALE_BUFFERS 0
233 #define DEBUG_BUFFERS(...) \
234  if (DEBUG_SWSCALE_BUFFERS) \
235  av_log(c, AV_LOG_DEBUG, __VA_ARGS__)
236 
237 static int swscale(SwsContext *c, const uint8_t *src[],
238  int srcStride[], int srcSliceY,
239  int srcSliceH, uint8_t *dst[], int dstStride[])
240 {
241  /* load a few things into local vars to make the code more readable?
242  * and faster */
243  const int dstW = c->dstW;
244  const int dstH = c->dstH;
245 
246  const enum AVPixelFormat dstFormat = c->dstFormat;
247  const int flags = c->flags;
248  int32_t *vLumFilterPos = c->vLumFilterPos;
249  int32_t *vChrFilterPos = c->vChrFilterPos;
250 
251  const int vLumFilterSize = c->vLumFilterSize;
252  const int vChrFilterSize = c->vChrFilterSize;
253 
254  yuv2planar1_fn yuv2plane1 = c->yuv2plane1;
255  yuv2planarX_fn yuv2planeX = c->yuv2planeX;
256  yuv2interleavedX_fn yuv2nv12cX = c->yuv2nv12cX;
257  yuv2packed1_fn yuv2packed1 = c->yuv2packed1;
258  yuv2packed2_fn yuv2packed2 = c->yuv2packed2;
259  yuv2packedX_fn yuv2packedX = c->yuv2packedX;
260  yuv2anyX_fn yuv2anyX = c->yuv2anyX;
261  const int chrSrcSliceY = srcSliceY >> c->chrSrcVSubSample;
262  const int chrSrcSliceH = AV_CEIL_RSHIFT(srcSliceH, c->chrSrcVSubSample);
263  int should_dither = isNBPS(c->srcFormat) ||
264  is16BPS(c->srcFormat);
265  int lastDstY;
266 
267  /* vars which will change and which we need to store back in the context */
268  int dstY = c->dstY;
269  int lumBufIndex = c->lumBufIndex;
270  int chrBufIndex = c->chrBufIndex;
271  int lastInLumBuf = c->lastInLumBuf;
272  int lastInChrBuf = c->lastInChrBuf;
273 
274 
275  int lumStart = 0;
276  int lumEnd = c->descIndex[0];
277  int chrStart = lumEnd;
278  int chrEnd = c->descIndex[1];
279  int vStart = chrEnd;
280  int vEnd = c->numDesc;
281  SwsSlice *src_slice = &c->slice[lumStart];
282  SwsSlice *hout_slice = &c->slice[c->numSlice-2];
283  SwsSlice *vout_slice = &c->slice[c->numSlice-1];
285 
286 
287  int needAlpha = c->needAlpha;
288 
289  int hasLumHoles = 1;
290  int hasChrHoles = 1;
291 
292 
293  if (isPacked(c->srcFormat)) {
294  src[0] =
295  src[1] =
296  src[2] =
297  src[3] = src[0];
298  srcStride[0] =
299  srcStride[1] =
300  srcStride[2] =
301  srcStride[3] = srcStride[0];
302  }
303  srcStride[1] <<= c->vChrDrop;
304  srcStride[2] <<= c->vChrDrop;
305 
306  DEBUG_BUFFERS("swscale() %p[%d] %p[%d] %p[%d] %p[%d] -> %p[%d] %p[%d] %p[%d] %p[%d]\n",
307  src[0], srcStride[0], src[1], srcStride[1],
308  src[2], srcStride[2], src[3], srcStride[3],
309  dst[0], dstStride[0], dst[1], dstStride[1],
310  dst[2], dstStride[2], dst[3], dstStride[3]);
311  DEBUG_BUFFERS("srcSliceY: %d srcSliceH: %d dstY: %d dstH: %d\n",
312  srcSliceY, srcSliceH, dstY, dstH);
313  DEBUG_BUFFERS("vLumFilterSize: %d vChrFilterSize: %d\n",
314  vLumFilterSize, vChrFilterSize);
315 
316  if (dstStride[0]&15 || dstStride[1]&15 ||
317  dstStride[2]&15 || dstStride[3]&15) {
318  static int warnedAlready = 0; // FIXME maybe move this into the context
319  if (flags & SWS_PRINT_INFO && !warnedAlready) {
321  "Warning: dstStride is not aligned!\n"
322  " ->cannot do aligned memory accesses anymore\n");
323  warnedAlready = 1;
324  }
325  }
326 
327  if ( (uintptr_t)dst[0]&15 || (uintptr_t)dst[1]&15 || (uintptr_t)dst[2]&15
328  || (uintptr_t)src[0]&15 || (uintptr_t)src[1]&15 || (uintptr_t)src[2]&15
329  || dstStride[0]&15 || dstStride[1]&15 || dstStride[2]&15 || dstStride[3]&15
330  || srcStride[0]&15 || srcStride[1]&15 || srcStride[2]&15 || srcStride[3]&15
331  ) {
332  static int warnedAlready=0;
333  int cpu_flags = av_get_cpu_flags();
334  if (HAVE_MMXEXT && (cpu_flags & AV_CPU_FLAG_SSE2) && !warnedAlready){
335  av_log(c, AV_LOG_WARNING, "Warning: data is not aligned! This can lead to a speed loss\n");
336  warnedAlready=1;
337  }
338  }
339 
340  /* Note the user might start scaling the picture in the middle so this
341  * will not get executed. This is not really intended but works
342  * currently, so people might do it. */
343  if (srcSliceY == 0) {
344  lumBufIndex = -1;
345  chrBufIndex = -1;
346  dstY = 0;
347  lastInLumBuf = -1;
348  lastInChrBuf = -1;
349  }
350 
351  if (!should_dither) {
352  c->chrDither8 = c->lumDither8 = sws_pb_64;
353  }
354  lastDstY = dstY;
355 
356  ff_init_vscale_pfn(c, yuv2plane1, yuv2planeX, yuv2nv12cX,
357  yuv2packed1, yuv2packed2, yuv2packedX, yuv2anyX, c->use_mmx_vfilter);
358 
359  ff_init_slice_from_src(src_slice, (uint8_t**)src, srcStride, c->srcW,
360  srcSliceY, srcSliceH, chrSrcSliceY, chrSrcSliceH, 1);
361 
362  ff_init_slice_from_src(vout_slice, (uint8_t**)dst, dstStride, c->dstW,
363  dstY, dstH, dstY >> c->chrDstVSubSample,
364  AV_CEIL_RSHIFT(dstH, c->chrDstVSubSample), 0);
365  if (srcSliceY == 0) {
366  hout_slice->plane[0].sliceY = lastInLumBuf + 1;
367  hout_slice->plane[1].sliceY = lastInChrBuf + 1;
368  hout_slice->plane[2].sliceY = lastInChrBuf + 1;
369  hout_slice->plane[3].sliceY = lastInLumBuf + 1;
370 
371  hout_slice->plane[0].sliceH =
372  hout_slice->plane[1].sliceH =
373  hout_slice->plane[2].sliceH =
374  hout_slice->plane[3].sliceH = 0;
375  hout_slice->width = dstW;
376  }
377 
378  for (; dstY < dstH; dstY++) {
379  const int chrDstY = dstY >> c->chrDstVSubSample;
380  int use_mmx_vfilter= c->use_mmx_vfilter;
381 
382  // First line needed as input
383  const int firstLumSrcY = FFMAX(1 - vLumFilterSize, vLumFilterPos[dstY]);
384  const int firstLumSrcY2 = FFMAX(1 - vLumFilterSize, vLumFilterPos[FFMIN(dstY | ((1 << c->chrDstVSubSample) - 1), dstH - 1)]);
385  // First line needed as input
386  const int firstChrSrcY = FFMAX(1 - vChrFilterSize, vChrFilterPos[chrDstY]);
387 
388  // Last line needed as input
389  int lastLumSrcY = FFMIN(c->srcH, firstLumSrcY + vLumFilterSize) - 1;
390  int lastLumSrcY2 = FFMIN(c->srcH, firstLumSrcY2 + vLumFilterSize) - 1;
391  int lastChrSrcY = FFMIN(c->chrSrcH, firstChrSrcY + vChrFilterSize) - 1;
392  int enough_lines;
393 
394  int i;
395  int posY, cPosY, firstPosY, lastPosY, firstCPosY, lastCPosY;
396 
397  // handle holes (FAST_BILINEAR & weird filters)
398  if (firstLumSrcY > lastInLumBuf) {
399 
400  hasLumHoles = lastInLumBuf != firstLumSrcY - 1;
401  if (hasLumHoles) {
402  hout_slice->plane[0].sliceY = firstLumSrcY;
403  hout_slice->plane[3].sliceY = firstLumSrcY;
404  hout_slice->plane[0].sliceH =
405  hout_slice->plane[3].sliceH = 0;
406  }
407 
408  lastInLumBuf = firstLumSrcY - 1;
409  }
410  if (firstChrSrcY > lastInChrBuf) {
411 
412  hasChrHoles = lastInChrBuf != firstChrSrcY - 1;
413  if (hasChrHoles) {
414  hout_slice->plane[1].sliceY = firstChrSrcY;
415  hout_slice->plane[2].sliceY = firstChrSrcY;
416  hout_slice->plane[1].sliceH =
417  hout_slice->plane[2].sliceH = 0;
418  }
419 
420  lastInChrBuf = firstChrSrcY - 1;
421  }
422 
423  DEBUG_BUFFERS("dstY: %d\n", dstY);
424  DEBUG_BUFFERS("\tfirstLumSrcY: %d lastLumSrcY: %d lastInLumBuf: %d\n",
425  firstLumSrcY, lastLumSrcY, lastInLumBuf);
426  DEBUG_BUFFERS("\tfirstChrSrcY: %d lastChrSrcY: %d lastInChrBuf: %d\n",
427  firstChrSrcY, lastChrSrcY, lastInChrBuf);
428 
429  // Do we have enough lines in this slice to output the dstY line
430  enough_lines = lastLumSrcY2 < srcSliceY + srcSliceH &&
431  lastChrSrcY < AV_CEIL_RSHIFT(srcSliceY + srcSliceH, c->chrSrcVSubSample);
432 
433  if (!enough_lines) {
434  lastLumSrcY = srcSliceY + srcSliceH - 1;
435  lastChrSrcY = chrSrcSliceY + chrSrcSliceH - 1;
436  DEBUG_BUFFERS("buffering slice: lastLumSrcY %d lastChrSrcY %d\n",
437  lastLumSrcY, lastChrSrcY);
438  }
439 
440  av_assert0((lastLumSrcY - firstLumSrcY + 1) <= hout_slice->plane[0].available_lines);
441  av_assert0((lastChrSrcY - firstChrSrcY + 1) <= hout_slice->plane[1].available_lines);
442 
443 
444  posY = hout_slice->plane[0].sliceY + hout_slice->plane[0].sliceH;
445  if (posY <= lastLumSrcY && !hasLumHoles) {
446  firstPosY = FFMAX(firstLumSrcY, posY);
447  lastPosY = FFMIN(firstLumSrcY + hout_slice->plane[0].available_lines - 1, srcSliceY + srcSliceH - 1);
448  } else {
449  firstPosY = posY;
450  lastPosY = lastLumSrcY;
451  }
452 
453  cPosY = hout_slice->plane[1].sliceY + hout_slice->plane[1].sliceH;
454  if (cPosY <= lastChrSrcY && !hasChrHoles) {
455  firstCPosY = FFMAX(firstChrSrcY, cPosY);
456  lastCPosY = FFMIN(firstChrSrcY + hout_slice->plane[1].available_lines - 1, AV_CEIL_RSHIFT(srcSliceY + srcSliceH, c->chrSrcVSubSample) - 1);
457  } else {
458  firstCPosY = cPosY;
459  lastCPosY = lastChrSrcY;
460  }
461 
462  ff_rotate_slice(hout_slice, lastPosY, lastCPosY);
463 
464  if (posY < lastLumSrcY + 1) {
465  for (i = lumStart; i < lumEnd; ++i)
466  desc[i].process(c, &desc[i], firstPosY, lastPosY - firstPosY + 1);
467  }
468 
469  lumBufIndex += lastLumSrcY - lastInLumBuf;
470  lastInLumBuf = lastLumSrcY;
471 
472  if (cPosY < lastChrSrcY + 1) {
473  for (i = chrStart; i < chrEnd; ++i)
474  desc[i].process(c, &desc[i], firstCPosY, lastCPosY - firstCPosY + 1);
475  }
476 
477  chrBufIndex += lastChrSrcY - lastInChrBuf;
478  lastInChrBuf = lastChrSrcY;
479 
480  // wrap buf index around to stay inside the ring buffer
481  if (lumBufIndex >= vLumFilterSize)
482  lumBufIndex -= vLumFilterSize;
483  if (chrBufIndex >= vChrFilterSize)
484  chrBufIndex -= vChrFilterSize;
485  if (!enough_lines)
486  break; // we can't output a dstY line so let's try with the next slice
487 
488 #if HAVE_MMX_INLINE
489  ff_updateMMXDitherTables(c, dstY, lumBufIndex, chrBufIndex,
490  lastInLumBuf, lastInChrBuf);
491 #endif
492  if (should_dither) {
493  c->chrDither8 = ff_dither_8x8_128[chrDstY & 7];
494  c->lumDither8 = ff_dither_8x8_128[dstY & 7];
495  }
496  if (dstY >= dstH - 2) {
497  /* hmm looks like we can't use MMX here without overwriting
498  * this array's tail */
499  ff_sws_init_output_funcs(c, &yuv2plane1, &yuv2planeX, &yuv2nv12cX,
500  &yuv2packed1, &yuv2packed2, &yuv2packedX, &yuv2anyX);
501  use_mmx_vfilter= 0;
502  ff_init_vscale_pfn(c, yuv2plane1, yuv2planeX, yuv2nv12cX,
503  yuv2packed1, yuv2packed2, yuv2packedX, yuv2anyX, use_mmx_vfilter);
504  }
505 
506  {
507  for (i = vStart; i < vEnd; ++i)
508  desc[i].process(c, &desc[i], dstY, 1);
509  }
510  }
511  if (isPlanar(dstFormat) && isALPHA(dstFormat) && !needAlpha) {
512  int length = dstW;
513  int height = dstY - lastDstY;
514 
515  if (is16BPS(dstFormat) || isNBPS(dstFormat)) {
516  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(dstFormat);
517  fillPlane16(dst[3], dstStride[3], length, height, lastDstY,
518  1, desc->comp[3].depth,
519  isBE(dstFormat));
520  } else
521  fillPlane(dst[3], dstStride[3], length, height, lastDstY, 255);
522  }
523 
524 #if HAVE_MMXEXT_INLINE
526  __asm__ volatile ("sfence" ::: "memory");
527 #endif
528  emms_c();
529 
530  /* store changed local vars back in the context */
531  c->dstY = dstY;
532  c->lumBufIndex = lumBufIndex;
533  c->chrBufIndex = chrBufIndex;
534  c->lastInLumBuf = lastInLumBuf;
535  c->lastInChrBuf = lastInChrBuf;
536 
537  return dstY - lastDstY;
538 }
539 
541 {
542  c->lumConvertRange = NULL;
543  c->chrConvertRange = NULL;
544  if (c->srcRange != c->dstRange && !isAnyRGB(c->dstFormat)) {
545  if (c->dstBpc <= 14) {
546  if (c->srcRange) {
549  } else {
552  }
553  } else {
554  if (c->srcRange) {
557  } else {
560  }
561  }
562  }
563 }
564 
566 {
567  enum AVPixelFormat srcFormat = c->srcFormat;
568 
570  &c->yuv2nv12cX, &c->yuv2packed1,
571  &c->yuv2packed2, &c->yuv2packedX, &c->yuv2anyX);
572 
574 
575 
576  if (c->srcBpc == 8) {
577  if (c->dstBpc <= 14) {
578  c->hyScale = c->hcScale = hScale8To15_c;
579  if (c->flags & SWS_FAST_BILINEAR) {
582  }
583  } else {
584  c->hyScale = c->hcScale = hScale8To19_c;
585  }
586  } else {
587  c->hyScale = c->hcScale = c->dstBpc > 14 ? hScale16To19_c
588  : hScale16To15_c;
589  }
590 
592 
593  if (!(isGray(srcFormat) || isGray(c->dstFormat) ||
594  srcFormat == AV_PIX_FMT_MONOBLACK || srcFormat == AV_PIX_FMT_MONOWHITE))
595  c->needs_hcscale = 1;
596 }
597 
599 {
600  sws_init_swscale(c);
601 
602  if (ARCH_PPC)
604  if (ARCH_X86)
606  if (ARCH_AARCH64)
608  if (ARCH_ARM)
610 
611  return swscale;
612 }
613 
614 static void reset_ptr(const uint8_t *src[], enum AVPixelFormat format)
615 {
616  if (!isALPHA(format))
617  src[3] = NULL;
618  if (!isPlanar(format)) {
619  src[3] = src[2] = NULL;
620 
621  if (!usePal(format))
622  src[1] = NULL;
623  }
624 }
625 
626 static int check_image_pointers(const uint8_t * const data[4], enum AVPixelFormat pix_fmt,
627  const int linesizes[4])
628 {
629  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
630  int i;
631 
632  av_assert2(desc);
633 
634  for (i = 0; i < 4; i++) {
635  int plane = desc->comp[i].plane;
636  if (!data[plane] || !linesizes[plane])
637  return 0;
638  }
639 
640  return 1;
641 }
642 
643 static void xyz12Torgb48(struct SwsContext *c, uint16_t *dst,
644  const uint16_t *src, int stride, int h)
645 {
646  int xp,yp;
648 
649  for (yp=0; yp<h; yp++) {
650  for (xp=0; xp+2<stride; xp+=3) {
651  int x, y, z, r, g, b;
652 
653  if (desc->flags & AV_PIX_FMT_FLAG_BE) {
654  x = AV_RB16(src + xp + 0);
655  y = AV_RB16(src + xp + 1);
656  z = AV_RB16(src + xp + 2);
657  } else {
658  x = AV_RL16(src + xp + 0);
659  y = AV_RL16(src + xp + 1);
660  z = AV_RL16(src + xp + 2);
661  }
662 
663  x = c->xyzgamma[x>>4];
664  y = c->xyzgamma[y>>4];
665  z = c->xyzgamma[z>>4];
666 
667  // convert from XYZlinear to sRGBlinear
668  r = c->xyz2rgb_matrix[0][0] * x +
669  c->xyz2rgb_matrix[0][1] * y +
670  c->xyz2rgb_matrix[0][2] * z >> 12;
671  g = c->xyz2rgb_matrix[1][0] * x +
672  c->xyz2rgb_matrix[1][1] * y +
673  c->xyz2rgb_matrix[1][2] * z >> 12;
674  b = c->xyz2rgb_matrix[2][0] * x +
675  c->xyz2rgb_matrix[2][1] * y +
676  c->xyz2rgb_matrix[2][2] * z >> 12;
677 
678  // limit values to 12-bit depth
679  r = av_clip_uintp2(r, 12);
680  g = av_clip_uintp2(g, 12);
681  b = av_clip_uintp2(b, 12);
682 
683  // convert from sRGBlinear to RGB and scale from 12bit to 16bit
684  if (desc->flags & AV_PIX_FMT_FLAG_BE) {
685  AV_WB16(dst + xp + 0, c->rgbgamma[r] << 4);
686  AV_WB16(dst + xp + 1, c->rgbgamma[g] << 4);
687  AV_WB16(dst + xp + 2, c->rgbgamma[b] << 4);
688  } else {
689  AV_WL16(dst + xp + 0, c->rgbgamma[r] << 4);
690  AV_WL16(dst + xp + 1, c->rgbgamma[g] << 4);
691  AV_WL16(dst + xp + 2, c->rgbgamma[b] << 4);
692  }
693  }
694  src += stride;
695  dst += stride;
696  }
697 }
698 
699 static void rgb48Toxyz12(struct SwsContext *c, uint16_t *dst,
700  const uint16_t *src, int stride, int h)
701 {
702  int xp,yp;
704 
705  for (yp=0; yp<h; yp++) {
706  for (xp=0; xp+2<stride; xp+=3) {
707  int x, y, z, r, g, b;
708 
709  if (desc->flags & AV_PIX_FMT_FLAG_BE) {
710  r = AV_RB16(src + xp + 0);
711  g = AV_RB16(src + xp + 1);
712  b = AV_RB16(src + xp + 2);
713  } else {
714  r = AV_RL16(src + xp + 0);
715  g = AV_RL16(src + xp + 1);
716  b = AV_RL16(src + xp + 2);
717  }
718 
719  r = c->rgbgammainv[r>>4];
720  g = c->rgbgammainv[g>>4];
721  b = c->rgbgammainv[b>>4];
722 
723  // convert from sRGBlinear to XYZlinear
724  x = c->rgb2xyz_matrix[0][0] * r +
725  c->rgb2xyz_matrix[0][1] * g +
726  c->rgb2xyz_matrix[0][2] * b >> 12;
727  y = c->rgb2xyz_matrix[1][0] * r +
728  c->rgb2xyz_matrix[1][1] * g +
729  c->rgb2xyz_matrix[1][2] * b >> 12;
730  z = c->rgb2xyz_matrix[2][0] * r +
731  c->rgb2xyz_matrix[2][1] * g +
732  c->rgb2xyz_matrix[2][2] * b >> 12;
733 
734  // limit values to 12-bit depth
735  x = av_clip_uintp2(x, 12);
736  y = av_clip_uintp2(y, 12);
737  z = av_clip_uintp2(z, 12);
738 
739  // convert from XYZlinear to X'Y'Z' and scale from 12bit to 16bit
740  if (desc->flags & AV_PIX_FMT_FLAG_BE) {
741  AV_WB16(dst + xp + 0, c->xyzgammainv[x] << 4);
742  AV_WB16(dst + xp + 1, c->xyzgammainv[y] << 4);
743  AV_WB16(dst + xp + 2, c->xyzgammainv[z] << 4);
744  } else {
745  AV_WL16(dst + xp + 0, c->xyzgammainv[x] << 4);
746  AV_WL16(dst + xp + 1, c->xyzgammainv[y] << 4);
747  AV_WL16(dst + xp + 2, c->xyzgammainv[z] << 4);
748  }
749  }
750  src += stride;
751  dst += stride;
752  }
753 }
754 
755 /**
756  * swscale wrapper, so we don't need to export the SwsContext.
757  * Assumes planar YUV to be in YUV order instead of YVU.
758  */
759 int attribute_align_arg sws_scale(struct SwsContext *c,
760  const uint8_t * const srcSlice[],
761  const int srcStride[], int srcSliceY,
762  int srcSliceH, uint8_t *const dst[],
763  const int dstStride[])
764 {
765  int i, ret;
766  const uint8_t *src2[4];
767  uint8_t *dst2[4];
768  uint8_t *rgb0_tmp = NULL;
769  int macro_height = isBayer(c->srcFormat) ? 2 : (1 << c->chrSrcVSubSample);
770  // copy strides, so they can safely be modified
771  int srcStride2[4];
772  int dstStride2[4];
773  int srcSliceY_internal = srcSliceY;
774 
775  if (!srcStride || !dstStride || !dst || !srcSlice) {
776  av_log(c, AV_LOG_ERROR, "One of the input parameters to sws_scale() is NULL, please check the calling code\n");
777  return 0;
778  }
779 
780  for (i=0; i<4; i++) {
781  srcStride2[i] = srcStride[i];
782  dstStride2[i] = dstStride[i];
783  }
784 
785  if ((srcSliceY & (macro_height-1)) ||
786  ((srcSliceH& (macro_height-1)) && srcSliceY + srcSliceH != c->srcH) ||
787  srcSliceY + srcSliceH > c->srcH) {
788  av_log(c, AV_LOG_ERROR, "Slice parameters %d, %d are invalid\n", srcSliceY, srcSliceH);
789  return AVERROR(EINVAL);
790  }
791 
792  if (c->gamma_flag && c->cascaded_context[0]) {
793 
794 
795  ret = sws_scale(c->cascaded_context[0],
796  srcSlice, srcStride, srcSliceY, srcSliceH,
798 
799  if (ret < 0)
800  return ret;
801 
802  if (c->cascaded_context[2])
803  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);
804  else
805  ret = sws_scale(c->cascaded_context[1], (const uint8_t * const *)c->cascaded_tmp, c->cascaded_tmpStride, srcSliceY, srcSliceH, dst, dstStride);
806 
807  if (ret < 0)
808  return ret;
809 
810  if (c->cascaded_context[2]) {
811  ret = sws_scale(c->cascaded_context[2],
812  (const uint8_t * const *)c->cascaded1_tmp, c->cascaded1_tmpStride, c->cascaded_context[1]->dstY - ret, c->cascaded_context[1]->dstY,
813  dst, dstStride);
814  }
815  return ret;
816  }
817 
818  if (c->cascaded_context[0] && srcSliceY == 0 && srcSliceH == c->cascaded_context[0]->srcH) {
819  ret = sws_scale(c->cascaded_context[0],
820  srcSlice, srcStride, srcSliceY, srcSliceH,
822  if (ret < 0)
823  return ret;
824  ret = sws_scale(c->cascaded_context[1],
825  (const uint8_t * const * )c->cascaded_tmp, c->cascaded_tmpStride, 0, c->cascaded_context[0]->dstH,
826  dst, dstStride);
827  return ret;
828  }
829 
830  memcpy(src2, srcSlice, sizeof(src2));
831  memcpy(dst2, dst, sizeof(dst2));
832 
833  // do not mess up sliceDir if we have a "trailing" 0-size slice
834  if (srcSliceH == 0)
835  return 0;
836 
837  if (!check_image_pointers(srcSlice, c->srcFormat, srcStride)) {
838  av_log(c, AV_LOG_ERROR, "bad src image pointers\n");
839  return 0;
840  }
841  if (!check_image_pointers((const uint8_t* const*)dst, c->dstFormat, dstStride)) {
842  av_log(c, AV_LOG_ERROR, "bad dst image pointers\n");
843  return 0;
844  }
845 
846  if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
847  av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");
848  return 0;
849  }
850  if (c->sliceDir == 0) {
851  if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;
852  }
853 
854  if (usePal(c->srcFormat)) {
855  for (i = 0; i < 256; i++) {
856  int r, g, b, y, u, v, a = 0xff;
857  if (c->srcFormat == AV_PIX_FMT_PAL8) {
858  uint32_t p = ((const uint32_t *)(srcSlice[1]))[i];
859  a = (p >> 24) & 0xFF;
860  r = (p >> 16) & 0xFF;
861  g = (p >> 8) & 0xFF;
862  b = p & 0xFF;
863  } else if (c->srcFormat == AV_PIX_FMT_RGB8) {
864  r = ( i >> 5 ) * 36;
865  g = ((i >> 2) & 7) * 36;
866  b = ( i & 3) * 85;
867  } else if (c->srcFormat == AV_PIX_FMT_BGR8) {
868  b = ( i >> 6 ) * 85;
869  g = ((i >> 3) & 7) * 36;
870  r = ( i & 7) * 36;
871  } else if (c->srcFormat == AV_PIX_FMT_RGB4_BYTE) {
872  r = ( i >> 3 ) * 255;
873  g = ((i >> 1) & 3) * 85;
874  b = ( i & 1) * 255;
875  } else if (c->srcFormat == AV_PIX_FMT_GRAY8 || c->srcFormat == AV_PIX_FMT_GRAY8A) {
876  r = g = b = i;
877  } else {
879  b = ( i >> 3 ) * 255;
880  g = ((i >> 1) & 3) * 85;
881  r = ( i & 1) * 255;
882  }
883 #define RGB2YUV_SHIFT 15
884 #define BY ( (int) (0.114 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
885 #define BV (-(int) (0.081 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
886 #define BU ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
887 #define GY ( (int) (0.587 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
888 #define GV (-(int) (0.419 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
889 #define GU (-(int) (0.331 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
890 #define RY ( (int) (0.299 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
891 #define RV ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
892 #define RU (-(int) (0.169 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
893 
894  y = av_clip_uint8((RY * r + GY * g + BY * b + ( 33 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
895  u = av_clip_uint8((RU * r + GU * g + BU * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
896  v = av_clip_uint8((RV * r + GV * g + BV * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
897  c->pal_yuv[i]= y + (u<<8) + (v<<16) + ((unsigned)a<<24);
898 
899  switch (c->dstFormat) {
900  case AV_PIX_FMT_BGR32:
901 #if !HAVE_BIGENDIAN
902  case AV_PIX_FMT_RGB24:
903 #endif
904  c->pal_rgb[i]= r + (g<<8) + (b<<16) + ((unsigned)a<<24);
905  break;
906  case AV_PIX_FMT_BGR32_1:
907 #if HAVE_BIGENDIAN
908  case AV_PIX_FMT_BGR24:
909 #endif
910  c->pal_rgb[i]= a + (r<<8) + (g<<16) + ((unsigned)b<<24);
911  break;
912  case AV_PIX_FMT_RGB32_1:
913 #if HAVE_BIGENDIAN
914  case AV_PIX_FMT_RGB24:
915 #endif
916  c->pal_rgb[i]= a + (b<<8) + (g<<16) + ((unsigned)r<<24);
917  break;
918  case AV_PIX_FMT_RGB32:
919 #if !HAVE_BIGENDIAN
920  case AV_PIX_FMT_BGR24:
921 #endif
922  default:
923  c->pal_rgb[i]= b + (g<<8) + (r<<16) + ((unsigned)a<<24);
924  }
925  }
926  }
927 
928  if (c->src0Alpha && !c->dst0Alpha && isALPHA(c->dstFormat)) {
929  uint8_t *base;
930  int x,y;
931  rgb0_tmp = av_malloc(FFABS(srcStride[0]) * srcSliceH + 32);
932  if (!rgb0_tmp)
933  return AVERROR(ENOMEM);
934 
935  base = srcStride[0] < 0 ? rgb0_tmp - srcStride[0] * (srcSliceH-1) : rgb0_tmp;
936  for (y=0; y<srcSliceH; y++){
937  memcpy(base + srcStride[0]*y, src2[0] + srcStride[0]*y, 4*c->srcW);
938  for (x=c->src0Alpha-1; x<4*c->srcW; x+=4) {
939  base[ srcStride[0]*y + x] = 0xFF;
940  }
941  }
942  src2[0] = base;
943  }
944 
945  if (c->srcXYZ && !(c->dstXYZ && c->srcW==c->dstW && c->srcH==c->dstH)) {
946  uint8_t *base;
947  rgb0_tmp = av_malloc(FFABS(srcStride[0]) * srcSliceH + 32);
948  if (!rgb0_tmp)
949  return AVERROR(ENOMEM);
950 
951  base = srcStride[0] < 0 ? rgb0_tmp - srcStride[0] * (srcSliceH-1) : rgb0_tmp;
952 
953  xyz12Torgb48(c, (uint16_t*)base, (const uint16_t*)src2[0], srcStride[0]/2, srcSliceH);
954  src2[0] = base;
955  }
956 
957  if (!srcSliceY && (c->flags & SWS_BITEXACT) && c->dither == SWS_DITHER_ED && c->dither_error[0])
958  for (i = 0; i < 4; i++)
959  memset(c->dither_error[i], 0, sizeof(c->dither_error[0][0]) * (c->dstW+2));
960 
961  if (c->sliceDir != 1) {
962  // slices go from bottom to top => we flip the image internally
963  for (i=0; i<4; i++) {
964  srcStride2[i] *= -1;
965  dstStride2[i] *= -1;
966  }
967 
968  src2[0] += (srcSliceH - 1) * srcStride[0];
969  if (!usePal(c->srcFormat))
970  src2[1] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[1];
971  src2[2] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[2];
972  src2[3] += (srcSliceH - 1) * srcStride[3];
973  dst2[0] += ( c->dstH - 1) * dstStride[0];
974  dst2[1] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[1];
975  dst2[2] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[2];
976  dst2[3] += ( c->dstH - 1) * dstStride[3];
977 
978  srcSliceY_internal = c->srcH-srcSliceY-srcSliceH;
979  }
980  reset_ptr(src2, c->srcFormat);
981  reset_ptr((void*)dst2, c->dstFormat);
982 
983  /* reset slice direction at end of frame */
984  if (srcSliceY_internal + srcSliceH == c->srcH)
985  c->sliceDir = 0;
986  ret = c->swscale(c, src2, srcStride2, srcSliceY_internal, srcSliceH, dst2, dstStride2);
987 
988 
989  if (c->dstXYZ && !(c->srcXYZ && c->srcW==c->dstW && c->srcH==c->dstH)) {
990  int dstY = c->dstY ? c->dstY : srcSliceY + srcSliceH;
991  uint16_t *dst16 = (uint16_t*)(dst2[0] + (dstY - ret) * dstStride2[0]);
992  av_assert0(dstY >= ret);
993  av_assert0(ret >= 0);
994  av_assert0(c->dstH >= dstY);
995 
996  /* replace on the same data */
997  rgb48Toxyz12(c, dst16, dst16, dstStride2[0]/2, ret);
998  }
999 
1000  av_free(rgb0_tmp);
1001  return ret;
1002 }
int plane
Definition: avisynth_c.h:422
#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:771
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:178
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)
static av_always_inline int isAnyRGB(enum AVPixelFormat pix_fmt)
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:2368
static enum AVPixelFormat pix_fmt
static void chrRangeFromJpeg_c(int16_t *dstU, int16_t *dstV, int width)
Definition: swscale.c:169
static const char * format[]
Definition: af_aiir.c:330
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2406
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:614
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:68
#define GU
const char * g
Definition: vf_curves.c:115
const char * desc
Definition: nvenc.c:65
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:214
Struct which holds all necessary data for processing a slice.
int16_t * rgbgammainv
const char * b
Definition: vf_curves.c:116
#define RU
static av_always_inline int is16BPS(enum AVPixelFormat pix_fmt)
Convenience header that includes libavutil's core.
int16_t * xyzgammainv
static atomic_int cpu_flags
Definition: cpu.c:50
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 src
Definition: vp8dsp.c:254
#define SWS_PRINT_INFO
Definition: swscale.h:75
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:85
static int process(struct ResampleContext *c, AudioData *dst, int dst_size, AudioData *src, int src_size, int *consumed)
Definition: soxr_resample.c:84
static void rgb48Toxyz12(struct SwsContext *c, uint16_t *dst, const uint16_t *src, int stride, int h)
Definition: swscale.c:699
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
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, int clip)
Definition: cfhd.c:153
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 ...
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:185
#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:64
8 bits with AV_PIX_FMT_RGB32 palette
Definition: pixfmt.h:77
int vChrFilterSize
Vertical filter size for chroma pixels.
#define AV_PIX_FMT_FLAG_FLOAT
The pixel format contains IEEE-754 floating point values.
Definition: pixdesc.h:188
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:32
#define u(width, name, range_min, range_max)
Definition: cbs_h2645.c:253
int cascaded_tmpStride[4]
av_cold void ff_sws_init_swscale_x86(SwsContext *c)
Definition: swscale.c:384
#define SWS_FAST_BILINEAR
Definition: swscale.h:58
#define DECLARE_ALIGNED(n, t, v)
Declare a variable that is aligned in memory.
Definition: mem.h:112
#define height
int lastInLumBuf
Last scaled horizontal luma/alpha line from source in the ring buffer.
int16_t rgb2xyz_matrix[3][4]
external API header
enum AVPixelFormat dstFormat
Destination pixel format.
#define BV
#define isALPHA(x)
Definition: swscale.c:51
#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:233
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:355
#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:598
#define RV
static void chrRangeToJpeg_c(int16_t *dstU, int16_t *dstV, int width)
Definition: swscale.c:160
const char * r
Definition: vf_curves.c:114
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:96
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:626
uint8_t * cascaded1_tmp[4]
static av_cold void sws_init_swscale(SwsContext *c)
Definition: swscale.c:565
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:643
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:146
#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
packed RGB 1:2:1, 8bpp, (msb)1R 2G 1B(lsb)
Definition: pixfmt.h:88
#define RY
#define width
yuv2planar1_fn yuv2plane1
static av_always_inline int isBayer(enum AVPixelFormat pix_fmt)
yuv2interleavedX_fn yuv2nv12cX
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
int available_lines
max number of lines that can be hold by this plane
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:69
av_cold void ff_sws_init_range_convert(SwsContext *c)
Definition: swscale.c:540
struct SwsFilterDescriptor * desc
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 isGray(x)
Definition: swscale.c:40
#define AV_PIX_FMT_BGR32
Definition: pixfmt.h:354
static av_always_inline int isBE(enum AVPixelFormat pix_fmt)
packed RGB 3:3:2, 8bpp, (msb)2B 3G 3R(lsb)
Definition: pixfmt.h:83
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:352
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:759
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:223
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
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:93
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:192
#define flags(name, subs,...)
Definition: cbs_av1.c:596
#define SWS_BITEXACT
Definition: swscale.h:84
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:237
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:76
int lastInChrBuf
Last scaled horizontal chroma line from source in the ring buffer.
int
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:105
yuv2packed2_fn yuv2packed2
Y , 8bpp.
Definition: pixfmt.h:74
#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:75
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:86
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:353
static void chrRangeFromJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width)
Definition: swscale.c:203
#define AV_CPU_FLAG_SSE2
PIV SSE2 functions.
Definition: cpu.h:36
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
static av_always_inline int isPacked(enum AVPixelFormat pix_fmt)
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:125
int sliceY
index of first line
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:64
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...
static av_always_inline int isNBPS(enum AVPixelFormat pix_fmt)
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:141