Libav
swscale.c
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1 /*
2  * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
3  *
4  * This file is part of Libav.
5  *
6  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include <assert.h>
22 #include <inttypes.h>
23 #include <math.h>
24 #include <stdio.h>
25 #include <string.h>
26 
27 #include "libavutil/avutil.h"
28 #include "libavutil/bswap.h"
29 #include "libavutil/cpu.h"
30 #include "libavutil/intreadwrite.h"
31 #include "libavutil/mathematics.h"
32 #include "libavutil/pixdesc.h"
33 #include "config.h"
34 #include "rgb2rgb.h"
35 #include "swscale_internal.h"
36 #include "swscale.h"
37 
39  { 36, 68, 60, 92, 34, 66, 58, 90, },
40  { 100, 4, 124, 28, 98, 2, 122, 26, },
41  { 52, 84, 44, 76, 50, 82, 42, 74, },
42  { 116, 20, 108, 12, 114, 18, 106, 10, },
43  { 32, 64, 56, 88, 38, 70, 62, 94, },
44  { 96, 0, 120, 24, 102, 6, 126, 30, },
45  { 48, 80, 40, 72, 54, 86, 46, 78, },
46  { 112, 16, 104, 8, 118, 22, 110, 14, },
47 };
48 
49 DECLARE_ALIGNED(8, static const uint8_t, sws_pb_64)[8] = {
50  64, 64, 64, 64, 64, 64, 64, 64
51 };
52 
53 static av_always_inline void fillPlane(uint8_t *plane, int stride, int width,
54  int height, int y, uint8_t val)
55 {
56  int i;
57  uint8_t *ptr = plane + stride * y;
58  for (i = 0; i < height; i++) {
59  memset(ptr, val, width);
60  ptr += stride;
61  }
62 }
63 
64 static void fill_plane9or10(uint8_t *plane, int stride, int width,
65  int height, int y, uint8_t val,
66  const int dst_depth, const int big_endian)
67 {
68  int i, j;
69  uint16_t *dst = (uint16_t *) (plane + stride * y);
70 #define FILL8TO9_OR_10(wfunc) \
71  for (i = 0; i < height; i++) { \
72  for (j = 0; j < width; j++) { \
73  wfunc(&dst[j], (val << (dst_depth - 8)) | \
74  (val >> (16 - dst_depth))); \
75  } \
76  dst += stride / 2; \
77  }
78  if (big_endian) {
80  } else {
82  }
83 }
84 
85 
86 static void hScale16To19_c(SwsContext *c, int16_t *_dst, int dstW,
87  const uint8_t *_src, const int16_t *filter,
88  const int32_t *filterPos, int filterSize)
89 {
91  int i;
92  int32_t *dst = (int32_t *) _dst;
93  const uint16_t *src = (const uint16_t *) _src;
94  int bits = desc->comp[0].depth - 1;
95  int sh = bits - 4;
96 
97  for (i = 0; i < dstW; i++) {
98  int j;
99  int srcPos = filterPos[i];
100  int val = 0;
101 
102  for (j = 0; j < filterSize; j++) {
103  val += src[srcPos + j] * filter[filterSize * i + j];
104  }
105  // filter=14 bit, input=16 bit, output=30 bit, >> 11 makes 19 bit
106  dst[i] = FFMIN(val >> sh, (1 << 19) - 1);
107  }
108 }
109 
110 static void hScale16To15_c(SwsContext *c, int16_t *dst, int dstW,
111  const uint8_t *_src, const int16_t *filter,
112  const int32_t *filterPos, int filterSize)
113 {
115  int i;
116  const uint16_t *src = (const uint16_t *) _src;
117  int sh = desc->comp[0].depth - 1;
118 
119  for (i = 0; i < dstW; i++) {
120  int j;
121  int srcPos = filterPos[i];
122  int val = 0;
123 
124  for (j = 0; j < filterSize; j++) {
125  val += src[srcPos + j] * filter[filterSize * i + j];
126  }
127  // filter=14 bit, input=16 bit, output=30 bit, >> 15 makes 15 bit
128  dst[i] = FFMIN(val >> sh, (1 << 15) - 1);
129  }
130 }
131 
132 // bilinear / bicubic scaling
133 static void hScale8To15_c(SwsContext *c, int16_t *dst, int dstW,
134  const uint8_t *src, const int16_t *filter,
135  const int32_t *filterPos, int filterSize)
136 {
137  int i;
138  for (i = 0; i < dstW; i++) {
139  int j;
140  int srcPos = filterPos[i];
141  int val = 0;
142  for (j = 0; j < filterSize; j++) {
143  val += ((int)src[srcPos + j]) * filter[filterSize * i + j];
144  }
145  dst[i] = FFMIN(val >> 7, (1 << 15) - 1); // the cubic equation does overflow ...
146  }
147 }
148 
149 static void hScale8To19_c(SwsContext *c, int16_t *_dst, int dstW,
150  const uint8_t *src, const int16_t *filter,
151  const int32_t *filterPos, int filterSize)
152 {
153  int i;
154  int32_t *dst = (int32_t *) _dst;
155  for (i = 0; i < dstW; i++) {
156  int j;
157  int srcPos = filterPos[i];
158  int val = 0;
159  for (j = 0; j < filterSize; j++) {
160  val += ((int)src[srcPos + j]) * filter[filterSize * i + j];
161  }
162  dst[i] = FFMIN(val >> 3, (1 << 19) - 1); // the cubic equation does overflow ...
163  }
164 }
165 
166 // FIXME all pal and rgb srcFormats could do this conversion as well
167 // FIXME all scalers more complex than bilinear could do half of this transform
168 static void chrRangeToJpeg_c(int16_t *dstU, int16_t *dstV, int width)
169 {
170  int i;
171  for (i = 0; i < width; i++) {
172  dstU[i] = (FFMIN(dstU[i], 30775) * 4663 - 9289992) >> 12; // -264
173  dstV[i] = (FFMIN(dstV[i], 30775) * 4663 - 9289992) >> 12; // -264
174  }
175 }
176 
177 static void chrRangeFromJpeg_c(int16_t *dstU, int16_t *dstV, int width)
178 {
179  int i;
180  for (i = 0; i < width; i++) {
181  dstU[i] = (dstU[i] * 1799 + 4081085) >> 11; // 1469
182  dstV[i] = (dstV[i] * 1799 + 4081085) >> 11; // 1469
183  }
184 }
185 
186 static void lumRangeToJpeg_c(int16_t *dst, int width)
187 {
188  int i;
189  for (i = 0; i < width; i++)
190  dst[i] = (FFMIN(dst[i], 30189) * 19077 - 39057361) >> 14;
191 }
192 
193 static void lumRangeFromJpeg_c(int16_t *dst, int width)
194 {
195  int i;
196  for (i = 0; i < width; i++)
197  dst[i] = (dst[i] * 14071 + 33561947) >> 14;
198 }
199 
200 static void chrRangeToJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width)
201 {
202  int i;
203  int32_t *dstU = (int32_t *) _dstU;
204  int32_t *dstV = (int32_t *) _dstV;
205  for (i = 0; i < width; i++) {
206  dstU[i] = (FFMIN(dstU[i], 30775 << 4) * 4663 - (9289992 << 4)) >> 12; // -264
207  dstV[i] = (FFMIN(dstV[i], 30775 << 4) * 4663 - (9289992 << 4)) >> 12; // -264
208  }
209 }
210 
211 static void chrRangeFromJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width)
212 {
213  int i;
214  int32_t *dstU = (int32_t *) _dstU;
215  int32_t *dstV = (int32_t *) _dstV;
216  for (i = 0; i < width; i++) {
217  dstU[i] = (dstU[i] * 1799 + (4081085 << 4)) >> 11; // 1469
218  dstV[i] = (dstV[i] * 1799 + (4081085 << 4)) >> 11; // 1469
219  }
220 }
221 
222 static void lumRangeToJpeg16_c(int16_t *_dst, int width)
223 {
224  int i;
225  int32_t *dst = (int32_t *) _dst;
226  for (i = 0; i < width; i++)
227  dst[i] = (FFMIN(dst[i], 30189 << 4) * 4769 - (39057361 << 2)) >> 12;
228 }
229 
230 static void lumRangeFromJpeg16_c(int16_t *_dst, int width)
231 {
232  int i;
233  int32_t *dst = (int32_t *) _dst;
234  for (i = 0; i < width; i++)
235  dst[i] = (dst[i] * 14071 + (33561947 << 4)) >> 14;
236 }
237 
238 static void hyscale_fast_c(SwsContext *c, int16_t *dst, int dstWidth,
239  const uint8_t *src, int srcW, int xInc)
240 {
241  int i;
242  unsigned int xpos = 0;
243  for (i = 0; i < dstWidth; i++) {
244  register unsigned int xx = xpos >> 16;
245  register unsigned int xalpha = (xpos & 0xFFFF) >> 9;
246  dst[i] = (src[xx] << 7) + (src[xx + 1] - src[xx]) * xalpha;
247  xpos += xInc;
248  }
249 }
250 
251 // *** horizontal scale Y line to temp buffer
252 static av_always_inline void hyscale(SwsContext *c, int16_t *dst, int dstWidth,
253  const uint8_t *src_in[4],
254  int srcW, int xInc,
255  const int16_t *hLumFilter,
256  const int32_t *hLumFilterPos,
257  int hLumFilterSize,
258  uint8_t *formatConvBuffer,
259  uint32_t *pal, int isAlpha)
260 {
261  void (*toYV12)(uint8_t *, const uint8_t *, int, uint32_t *) =
262  isAlpha ? c->alpToYV12 : c->lumToYV12;
263  void (*convertRange)(int16_t *, int) = isAlpha ? NULL : c->lumConvertRange;
264  const uint8_t *src = src_in[isAlpha ? 3 : 0];
265 
266  if (toYV12) {
267  toYV12(formatConvBuffer, src, srcW, pal);
268  src = formatConvBuffer;
269  } else if (c->readLumPlanar && !isAlpha) {
270  c->readLumPlanar(formatConvBuffer, src_in, srcW);
271  src = formatConvBuffer;
272  } else if (c->readAlpPlanar && isAlpha) {
273  c->readAlpPlanar(formatConvBuffer, src_in, srcW);
274  src = formatConvBuffer;
275  }
276 
277  if (!c->hyscale_fast) {
278  c->hyScale(c, dst, dstWidth, src, hLumFilter,
279  hLumFilterPos, hLumFilterSize);
280  } else { // fast bilinear upscale / crap downscale
281  c->hyscale_fast(c, dst, dstWidth, src, srcW, xInc);
282  }
283 
284  if (convertRange)
285  convertRange(dst, dstWidth);
286 }
287 
288 static void hcscale_fast_c(SwsContext *c, int16_t *dst1, int16_t *dst2,
289  int dstWidth, const uint8_t *src1,
290  const uint8_t *src2, int srcW, int xInc)
291 {
292  int i;
293  unsigned int xpos = 0;
294  for (i = 0; i < dstWidth; i++) {
295  register unsigned int xx = xpos >> 16;
296  register unsigned int xalpha = (xpos & 0xFFFF) >> 9;
297  dst1[i] = (src1[xx] * (xalpha ^ 127) + src1[xx + 1] * xalpha);
298  dst2[i] = (src2[xx] * (xalpha ^ 127) + src2[xx + 1] * xalpha);
299  xpos += xInc;
300  }
301 }
302 
303 static av_always_inline void hcscale(SwsContext *c, int16_t *dst1,
304  int16_t *dst2, int dstWidth,
305  const uint8_t *src_in[4],
306  int srcW, int xInc,
307  const int16_t *hChrFilter,
308  const int32_t *hChrFilterPos,
309  int hChrFilterSize,
310  uint8_t *formatConvBuffer, uint32_t *pal)
311 {
312  const uint8_t *src1 = src_in[1], *src2 = src_in[2];
313  if (c->chrToYV12) {
314  uint8_t *buf2 = formatConvBuffer +
315  FFALIGN(srcW * FFALIGN(c->srcBpc, 8) >> 3, 16);
316  c->chrToYV12(formatConvBuffer, buf2, src1, src2, srcW, pal);
317  src1 = formatConvBuffer;
318  src2 = buf2;
319  } else if (c->readChrPlanar) {
320  uint8_t *buf2 = formatConvBuffer +
321  FFALIGN(srcW * FFALIGN(c->srcBpc, 8) >> 3, 16);
322  c->readChrPlanar(formatConvBuffer, buf2, src_in, srcW);
323  src1 = formatConvBuffer;
324  src2 = buf2;
325  }
326 
327  if (!c->hcscale_fast) {
328  c->hcScale(c, dst1, dstWidth, src1, hChrFilter, hChrFilterPos, hChrFilterSize);
329  c->hcScale(c, dst2, dstWidth, src2, hChrFilter, hChrFilterPos, hChrFilterSize);
330  } else { // fast bilinear upscale / crap downscale
331  c->hcscale_fast(c, dst1, dst2, dstWidth, src1, src2, srcW, xInc);
332  }
333 
334  if (c->chrConvertRange)
335  c->chrConvertRange(dst1, dst2, dstWidth);
336 }
337 
338 #define DEBUG_SWSCALE_BUFFERS 0
339 #define DEBUG_BUFFERS(...) \
340  if (DEBUG_SWSCALE_BUFFERS) \
341  av_log(c, AV_LOG_DEBUG, __VA_ARGS__)
342 
343 static int swscale(SwsContext *c, const uint8_t *src[],
344  int srcStride[], int srcSliceY,
345  int srcSliceH, uint8_t *dst[], int dstStride[])
346 {
347  /* load a few things into local vars to make the code more readable?
348  * and faster */
349  const int srcW = c->srcW;
350  const int dstW = c->dstW;
351  const int dstH = c->dstH;
352  const int chrDstW = c->chrDstW;
353  const int chrSrcW = c->chrSrcW;
354  const int lumXInc = c->lumXInc;
355  const int chrXInc = c->chrXInc;
356  const enum AVPixelFormat dstFormat = c->dstFormat;
357  const int flags = c->flags;
358  int32_t *vLumFilterPos = c->vLumFilterPos;
359  int32_t *vChrFilterPos = c->vChrFilterPos;
360  int32_t *hLumFilterPos = c->hLumFilterPos;
361  int32_t *hChrFilterPos = c->hChrFilterPos;
362  int16_t *vLumFilter = c->vLumFilter;
363  int16_t *vChrFilter = c->vChrFilter;
364  int16_t *hLumFilter = c->hLumFilter;
365  int16_t *hChrFilter = c->hChrFilter;
366  int32_t *lumMmxFilter = c->lumMmxFilter;
367  int32_t *chrMmxFilter = c->chrMmxFilter;
368  const int vLumFilterSize = c->vLumFilterSize;
369  const int vChrFilterSize = c->vChrFilterSize;
370  const int hLumFilterSize = c->hLumFilterSize;
371  const int hChrFilterSize = c->hChrFilterSize;
372  int16_t **lumPixBuf = c->lumPixBuf;
373  int16_t **chrUPixBuf = c->chrUPixBuf;
374  int16_t **chrVPixBuf = c->chrVPixBuf;
375  int16_t **alpPixBuf = c->alpPixBuf;
376  const int vLumBufSize = c->vLumBufSize;
377  const int vChrBufSize = c->vChrBufSize;
378  uint8_t *formatConvBuffer = c->formatConvBuffer;
379  uint32_t *pal = c->pal_yuv;
380  yuv2planar1_fn yuv2plane1 = c->yuv2plane1;
381  yuv2planarX_fn yuv2planeX = c->yuv2planeX;
382  yuv2interleavedX_fn yuv2nv12cX = c->yuv2nv12cX;
383  yuv2packed1_fn yuv2packed1 = c->yuv2packed1;
384  yuv2packed2_fn yuv2packed2 = c->yuv2packed2;
385  yuv2packedX_fn yuv2packedX = c->yuv2packedX;
386  yuv2anyX_fn yuv2anyX = c->yuv2anyX;
387  const int chrSrcSliceY = srcSliceY >> c->chrSrcVSubSample;
388  const int chrSrcSliceH = AV_CEIL_RSHIFT(srcSliceH, c->chrSrcVSubSample);
389  int should_dither = is9_OR_10BPS(c->srcFormat) ||
390  is16BPS(c->srcFormat);
391  int lastDstY;
392 
393  /* vars which will change and which we need to store back in the context */
394  int dstY = c->dstY;
395  int lumBufIndex = c->lumBufIndex;
396  int chrBufIndex = c->chrBufIndex;
397  int lastInLumBuf = c->lastInLumBuf;
398  int lastInChrBuf = c->lastInChrBuf;
399 
400  if (isPacked(c->srcFormat)) {
401  src[0] =
402  src[1] =
403  src[2] =
404  src[3] = src[0];
405  srcStride[0] =
406  srcStride[1] =
407  srcStride[2] =
408  srcStride[3] = srcStride[0];
409  }
410  srcStride[1] <<= c->vChrDrop;
411  srcStride[2] <<= c->vChrDrop;
412 
413  DEBUG_BUFFERS("swscale() %p[%d] %p[%d] %p[%d] %p[%d] -> %p[%d] %p[%d] %p[%d] %p[%d]\n",
414  src[0], srcStride[0], src[1], srcStride[1],
415  src[2], srcStride[2], src[3], srcStride[3],
416  dst[0], dstStride[0], dst[1], dstStride[1],
417  dst[2], dstStride[2], dst[3], dstStride[3]);
418  DEBUG_BUFFERS("srcSliceY: %d srcSliceH: %d dstY: %d dstH: %d\n",
419  srcSliceY, srcSliceH, dstY, dstH);
420  DEBUG_BUFFERS("vLumFilterSize: %d vLumBufSize: %d vChrFilterSize: %d vChrBufSize: %d\n",
421  vLumFilterSize, vLumBufSize, vChrFilterSize, vChrBufSize);
422 
423  if (dstStride[0] % 8 != 0 || dstStride[1] % 8 != 0 ||
424  dstStride[2] % 8 != 0 || dstStride[3] % 8 != 0) {
425  static int warnedAlready = 0; // FIXME maybe move this into the context
426  if (flags & SWS_PRINT_INFO && !warnedAlready) {
428  "Warning: dstStride is not aligned!\n"
429  " ->cannot do aligned memory accesses anymore\n");
430  warnedAlready = 1;
431  }
432  }
433 
434  /* Note the user might start scaling the picture in the middle so this
435  * will not get executed. This is not really intended but works
436  * currently, so people might do it. */
437  if (srcSliceY == 0) {
438  lumBufIndex = -1;
439  chrBufIndex = -1;
440  dstY = 0;
441  lastInLumBuf = -1;
442  lastInChrBuf = -1;
443  }
444 
445  if (!should_dither) {
446  c->chrDither8 = c->lumDither8 = sws_pb_64;
447  }
448  lastDstY = dstY;
449 
450  for (; dstY < dstH; dstY++) {
451  const int chrDstY = dstY >> c->chrDstVSubSample;
452  uint8_t *dest[4] = {
453  dst[0] + dstStride[0] * dstY,
454  dst[1] + dstStride[1] * chrDstY,
455  dst[2] + dstStride[2] * chrDstY,
456  (CONFIG_SWSCALE_ALPHA && alpPixBuf) ? dst[3] + dstStride[3] * dstY : NULL,
457  };
458 
459  // First line needed as input
460  const int firstLumSrcY = FFMAX(1 - vLumFilterSize, vLumFilterPos[dstY]);
461  const int firstLumSrcY2 = FFMAX(1 - vLumFilterSize, vLumFilterPos[FFMIN(dstY | ((1 << c->chrDstVSubSample) - 1), dstH - 1)]);
462  // First line needed as input
463  const int firstChrSrcY = FFMAX(1 - vChrFilterSize, vChrFilterPos[chrDstY]);
464 
465  // Last line needed as input
466  int lastLumSrcY = FFMIN(c->srcH, firstLumSrcY + vLumFilterSize) - 1;
467  int lastLumSrcY2 = FFMIN(c->srcH, firstLumSrcY2 + vLumFilterSize) - 1;
468  int lastChrSrcY = FFMIN(c->chrSrcH, firstChrSrcY + vChrFilterSize) - 1;
469  int enough_lines;
470 
471  // handle holes (FAST_BILINEAR & weird filters)
472  if (firstLumSrcY > lastInLumBuf)
473  lastInLumBuf = firstLumSrcY - 1;
474  if (firstChrSrcY > lastInChrBuf)
475  lastInChrBuf = firstChrSrcY - 1;
476  assert(firstLumSrcY >= lastInLumBuf - vLumBufSize + 1);
477  assert(firstChrSrcY >= lastInChrBuf - vChrBufSize + 1);
478 
479  DEBUG_BUFFERS("dstY: %d\n", dstY);
480  DEBUG_BUFFERS("\tfirstLumSrcY: %d lastLumSrcY: %d lastInLumBuf: %d\n",
481  firstLumSrcY, lastLumSrcY, lastInLumBuf);
482  DEBUG_BUFFERS("\tfirstChrSrcY: %d lastChrSrcY: %d lastInChrBuf: %d\n",
483  firstChrSrcY, lastChrSrcY, lastInChrBuf);
484 
485  // Do we have enough lines in this slice to output the dstY line
486  enough_lines = lastLumSrcY2 < srcSliceY + srcSliceH &&
487  lastChrSrcY < AV_CEIL_RSHIFT(srcSliceY + srcSliceH, c->chrSrcVSubSample);
488 
489  if (!enough_lines) {
490  lastLumSrcY = srcSliceY + srcSliceH - 1;
491  lastChrSrcY = chrSrcSliceY + chrSrcSliceH - 1;
492  DEBUG_BUFFERS("buffering slice: lastLumSrcY %d lastChrSrcY %d\n",
493  lastLumSrcY, lastChrSrcY);
494  }
495 
496  // Do horizontal scaling
497  while (lastInLumBuf < lastLumSrcY) {
498  const uint8_t *src1[4] = {
499  src[0] + (lastInLumBuf + 1 - srcSliceY) * srcStride[0],
500  src[1] + (lastInLumBuf + 1 - srcSliceY) * srcStride[1],
501  src[2] + (lastInLumBuf + 1 - srcSliceY) * srcStride[2],
502  src[3] + (lastInLumBuf + 1 - srcSliceY) * srcStride[3],
503  };
504  lumBufIndex++;
505  assert(lumBufIndex < 2 * vLumBufSize);
506  assert(lastInLumBuf + 1 - srcSliceY < srcSliceH);
507  assert(lastInLumBuf + 1 - srcSliceY >= 0);
508  hyscale(c, lumPixBuf[lumBufIndex], dstW, src1, srcW, lumXInc,
509  hLumFilter, hLumFilterPos, hLumFilterSize,
510  formatConvBuffer, pal, 0);
511  if (CONFIG_SWSCALE_ALPHA && alpPixBuf)
512  hyscale(c, alpPixBuf[lumBufIndex], dstW, src1, srcW,
513  lumXInc, hLumFilter, hLumFilterPos, hLumFilterSize,
514  formatConvBuffer, pal, 1);
515  lastInLumBuf++;
516  DEBUG_BUFFERS("\t\tlumBufIndex %d: lastInLumBuf: %d\n",
517  lumBufIndex, lastInLumBuf);
518  }
519  while (lastInChrBuf < lastChrSrcY) {
520  const uint8_t *src1[4] = {
521  src[0] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[0],
522  src[1] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[1],
523  src[2] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[2],
524  src[3] + (lastInChrBuf + 1 - chrSrcSliceY) * srcStride[3],
525  };
526  chrBufIndex++;
527  assert(chrBufIndex < 2 * vChrBufSize);
528  assert(lastInChrBuf + 1 - chrSrcSliceY < (chrSrcSliceH));
529  assert(lastInChrBuf + 1 - chrSrcSliceY >= 0);
530  // FIXME replace parameters through context struct (some at least)
531 
532  if (c->needs_hcscale)
533  hcscale(c, chrUPixBuf[chrBufIndex], chrVPixBuf[chrBufIndex],
534  chrDstW, src1, chrSrcW, chrXInc,
535  hChrFilter, hChrFilterPos, hChrFilterSize,
536  formatConvBuffer, pal);
537  lastInChrBuf++;
538  DEBUG_BUFFERS("\t\tchrBufIndex %d: lastInChrBuf: %d\n",
539  chrBufIndex, lastInChrBuf);
540  }
541  // wrap buf index around to stay inside the ring buffer
542  if (lumBufIndex >= vLumBufSize)
543  lumBufIndex -= vLumBufSize;
544  if (chrBufIndex >= vChrBufSize)
545  chrBufIndex -= vChrBufSize;
546  if (!enough_lines)
547  break; // we can't output a dstY line so let's try with the next slice
548 
549 #if HAVE_MMX_INLINE
550  updateMMXDitherTables(c, dstY, lumBufIndex, chrBufIndex,
551  lastInLumBuf, lastInChrBuf);
552 #endif
553  if (should_dither) {
554  c->chrDither8 = ff_dither_8x8_128[chrDstY & 7];
555  c->lumDither8 = ff_dither_8x8_128[dstY & 7];
556  }
557  if (dstY >= dstH - 2) {
558  /* hmm looks like we can't use MMX here without overwriting
559  * this array's tail */
560  ff_sws_init_output_funcs(c, &yuv2plane1, &yuv2planeX, &yuv2nv12cX,
561  &yuv2packed1, &yuv2packed2, &yuv2packedX, &yuv2anyX);
562  }
563 
564  {
565  const int16_t **lumSrcPtr = (const int16_t **)lumPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize;
566  const int16_t **chrUSrcPtr = (const int16_t **)chrUPixBuf + chrBufIndex + firstChrSrcY - lastInChrBuf + vChrBufSize;
567  const int16_t **chrVSrcPtr = (const int16_t **)chrVPixBuf + chrBufIndex + firstChrSrcY - lastInChrBuf + vChrBufSize;
568  const int16_t **alpSrcPtr = (CONFIG_SWSCALE_ALPHA && alpPixBuf) ?
569  (const int16_t **)alpPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize : NULL;
570 
571  if (firstLumSrcY < 0 || firstLumSrcY + vLumFilterSize > c->srcH) {
572  const int16_t **tmpY = (const int16_t **)lumPixBuf +
573  2 * vLumBufSize;
574  int neg = -firstLumSrcY, i;
575  int end = FFMIN(c->srcH - firstLumSrcY, vLumFilterSize);
576  for (i = 0; i < neg; i++)
577  tmpY[i] = lumSrcPtr[neg];
578  for (; i < end; i++)
579  tmpY[i] = lumSrcPtr[i];
580  for (; i < vLumFilterSize; i++)
581  tmpY[i] = tmpY[i - 1];
582  lumSrcPtr = tmpY;
583 
584  if (alpSrcPtr) {
585  const int16_t **tmpA = (const int16_t **)alpPixBuf +
586  2 * vLumBufSize;
587  for (i = 0; i < neg; i++)
588  tmpA[i] = alpSrcPtr[neg];
589  for (; i < end; i++)
590  tmpA[i] = alpSrcPtr[i];
591  for (; i < vLumFilterSize; i++)
592  tmpA[i] = tmpA[i - 1];
593  alpSrcPtr = tmpA;
594  }
595  }
596  if (firstChrSrcY < 0 ||
597  firstChrSrcY + vChrFilterSize > c->chrSrcH) {
598  const int16_t **tmpU = (const int16_t **)chrUPixBuf + 2 * vChrBufSize,
599  **tmpV = (const int16_t **)chrVPixBuf + 2 * vChrBufSize;
600  int neg = -firstChrSrcY, i;
601  int end = FFMIN(c->chrSrcH - firstChrSrcY, vChrFilterSize);
602  for (i = 0; i < neg; i++) {
603  tmpU[i] = chrUSrcPtr[neg];
604  tmpV[i] = chrVSrcPtr[neg];
605  }
606  for (; i < end; i++) {
607  tmpU[i] = chrUSrcPtr[i];
608  tmpV[i] = chrVSrcPtr[i];
609  }
610  for (; i < vChrFilterSize; i++) {
611  tmpU[i] = tmpU[i - 1];
612  tmpV[i] = tmpV[i - 1];
613  }
614  chrUSrcPtr = tmpU;
615  chrVSrcPtr = tmpV;
616  }
617 
618  if (isPlanarYUV(dstFormat) ||
619  (isGray(dstFormat) && !isALPHA(dstFormat))) { // YV12 like
620  const int chrSkipMask = (1 << c->chrDstVSubSample) - 1;
621 
622  if (vLumFilterSize == 1) {
623  yuv2plane1(lumSrcPtr[0], dest[0], dstW, c->lumDither8, 0);
624  } else {
625  yuv2planeX(vLumFilter + dstY * vLumFilterSize,
626  vLumFilterSize, lumSrcPtr, dest[0],
627  dstW, c->lumDither8, 0);
628  }
629 
630  if (!((dstY & chrSkipMask) || isGray(dstFormat))) {
631  if (yuv2nv12cX) {
632  yuv2nv12cX(c, vChrFilter + chrDstY * vChrFilterSize,
633  vChrFilterSize, chrUSrcPtr, chrVSrcPtr,
634  dest[1], chrDstW);
635  } else if (vChrFilterSize == 1) {
636  yuv2plane1(chrUSrcPtr[0], dest[1], chrDstW, c->chrDither8, 0);
637  yuv2plane1(chrVSrcPtr[0], dest[2], chrDstW, c->chrDither8, 3);
638  } else {
639  yuv2planeX(vChrFilter + chrDstY * vChrFilterSize,
640  vChrFilterSize, chrUSrcPtr, dest[1],
641  chrDstW, c->chrDither8, 0);
642  yuv2planeX(vChrFilter + chrDstY * vChrFilterSize,
643  vChrFilterSize, chrVSrcPtr, dest[2],
644  chrDstW, c->chrDither8, 3);
645  }
646  }
647 
648  if (CONFIG_SWSCALE_ALPHA && alpPixBuf) {
649  if (vLumFilterSize == 1) {
650  yuv2plane1(alpSrcPtr[0], dest[3], dstW,
651  c->lumDither8, 0);
652  } else {
653  yuv2planeX(vLumFilter + dstY * vLumFilterSize,
654  vLumFilterSize, alpSrcPtr, dest[3],
655  dstW, c->lumDither8, 0);
656  }
657  }
658  } else if (yuv2packedX) {
659  if (c->yuv2packed1 && vLumFilterSize == 1 &&
660  vChrFilterSize <= 2) { // unscaled RGB
661  int chrAlpha = vChrFilterSize == 1 ? 0 : vChrFilter[2 * dstY + 1];
662  yuv2packed1(c, *lumSrcPtr, chrUSrcPtr, chrVSrcPtr,
663  alpPixBuf ? *alpSrcPtr : NULL,
664  dest[0], dstW, chrAlpha, dstY);
665  } else if (c->yuv2packed2 && vLumFilterSize == 2 &&
666  vChrFilterSize == 2) { // bilinear upscale RGB
667  int lumAlpha = vLumFilter[2 * dstY + 1];
668  int chrAlpha = vChrFilter[2 * dstY + 1];
669  lumMmxFilter[2] =
670  lumMmxFilter[3] = vLumFilter[2 * dstY] * 0x10001;
671  chrMmxFilter[2] =
672  chrMmxFilter[3] = vChrFilter[2 * chrDstY] * 0x10001;
673  yuv2packed2(c, lumSrcPtr, chrUSrcPtr, chrVSrcPtr,
674  alpPixBuf ? alpSrcPtr : NULL,
675  dest[0], dstW, lumAlpha, chrAlpha, dstY);
676  } else { // general RGB
677  yuv2packedX(c, vLumFilter + dstY * vLumFilterSize,
678  lumSrcPtr, vLumFilterSize,
679  vChrFilter + dstY * vChrFilterSize,
680  chrUSrcPtr, chrVSrcPtr, vChrFilterSize,
681  alpSrcPtr, dest[0], dstW, dstY);
682  }
683  } else {
684  yuv2anyX(c, vLumFilter + dstY * vLumFilterSize,
685  lumSrcPtr, vLumFilterSize,
686  vChrFilter + dstY * vChrFilterSize,
687  chrUSrcPtr, chrVSrcPtr, vChrFilterSize,
688  alpSrcPtr, dest, dstW, dstY);
689  }
690  }
691  }
692 
693  if (isPlanar(dstFormat) && isALPHA(dstFormat) && !alpPixBuf) {
694  int length = dstW;
695  int height = dstY - lastDstY;
696  if (is16BPS(c->dstFormat))
697  length *= 2;
698 
699  if (is9_OR_10BPS(dstFormat)) {
700  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(dstFormat);
701  fill_plane9or10(dst[3], dstStride[3], length, height, lastDstY,
702  255, desc->comp[3].depth, isBE(dstFormat));
703  } else
704  fillPlane(dst[3], dstStride[3], length, height, lastDstY, 255);
705  }
706 
707 #if HAVE_MMXEXT_INLINE
709  __asm__ volatile ("sfence" ::: "memory");
710 #endif
711  emms_c();
712 
713  /* store changed local vars back in the context */
714  c->dstY = dstY;
715  c->lumBufIndex = lumBufIndex;
716  c->chrBufIndex = chrBufIndex;
717  c->lastInLumBuf = lastInLumBuf;
718  c->lastInChrBuf = lastInChrBuf;
719 
720  return dstY - lastDstY;
721 }
722 
724 {
725  enum AVPixelFormat srcFormat = c->srcFormat;
726 
728  &c->yuv2nv12cX, &c->yuv2packed1,
729  &c->yuv2packed2, &c->yuv2packedX, &c->yuv2anyX);
730 
732 
733  if (c->srcBpc == 8) {
734  if (c->dstBpc <= 10) {
735  c->hyScale = c->hcScale = hScale8To15_c;
736  if (c->flags & SWS_FAST_BILINEAR) {
739  }
740  } else {
741  c->hyScale = c->hcScale = hScale8To19_c;
742  }
743  } else {
744  c->hyScale = c->hcScale = c->dstBpc > 10 ? hScale16To19_c
745  : hScale16To15_c;
746  }
747 
748  if (c->srcRange != c->dstRange && !isAnyRGB(c->dstFormat)) {
749  if (c->dstBpc <= 10) {
750  if (c->srcRange) {
753  } else {
756  }
757  } else {
758  if (c->srcRange) {
761  } else {
764  }
765  }
766  }
767 
768  if (!(isGray(srcFormat) || isGray(c->dstFormat) ||
769  srcFormat == AV_PIX_FMT_MONOBLACK || srcFormat == AV_PIX_FMT_MONOWHITE))
770  c->needs_hcscale = 1;
771 }
772 
774 {
775  sws_init_swscale(c);
776 
777  if (ARCH_PPC)
779  if (ARCH_X86)
781 
782  return swscale;
783 }
int16_t ** alpPixBuf
Ring buffer for scaled horizontal alpha plane lines to be fed to the vertical scaler.
void(* hcScale)(struct SwsContext *c, int16_t *dst, int dstW, const uint8_t *src, const int16_t *filter, const int32_t *filterPos, int filterSize)
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:186
static void chrRangeFromJpeg_c(int16_t *dstU, int16_t *dstV, int width)
Definition: swscale.c:177
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:1768
int chrSrcH
Height of source chroma planes.
void(* chrConvertRange)(int16_t *dst1, int16_t *dst2, int width)
Color range conversion function for chroma planes if needed.
#define ARCH_PPC
Definition: config.h:24
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:130
void updateMMXDitherTables(SwsContext *c, int dstY, int lumBufIndex, int chrBufIndex, int lastInLumBuf, int lastInChrBuf)
const char * desc
Definition: nvenc.c:101
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:222
av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (%s)\, len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt), use_generic ? ac->func_descr_generic :ac->func_descr)
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:58
static av_always_inline int is16BPS(enum AVPixelFormat pix_fmt)
external API header
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...
int srcRange
0 = MPG YUV range, 1 = JPG YUV range (source image).
const uint8_t * lumDither8
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...
#define SWS_PRINT_INFO
Definition: swscale.h:74
int dstY
Last destination vertical line output from last slice.
int stride
Definition: mace.c:144
int srcH
Height of source luma/alpha planes.
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:86
int chrDstVSubSample
Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in destination i...
uint8_t bits
Definition: crc.c:252
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:119
uint8_t
static void lumRangeFromJpeg_c(int16_t *dst, int width)
Definition: swscale.c:193
#define av_cold
Definition: attributes.h:66
int vChrFilterSize
Vertical filter size for chroma pixels.
void(* readAlpPlanar)(uint8_t *dst, const uint8_t *src[4], int width)
void(* chrToYV12)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src1, const uint8_t *src2, int width, uint32_t *pal)
Unscaled conversion of chroma planes to YV12 for horizontal scaler.
int16_t ** lumPixBuf
Ring buffer for scaled horizontal luma plane lines to be fed to the vertical scaler.
#define emms_c()
Definition: internal.h:48
#define AV_CPU_FLAG_MMXEXT
SSE integer functions or AMD MMX ext.
Definition: cpu.h:30
av_cold void ff_sws_init_swscale_x86(SwsContext *c)
Definition: swscale.c:304
#define SWS_FAST_BILINEAR
Definition: swscale.h:57
int lastInLumBuf
Last scaled horizontal luma/alpha line from source in the ring buffer.
static int flags
Definition: log.c:50
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 (...
#define isAnyRGB(x)
external api for the swscale stuff
enum AVPixelFormat dstFormat
Destination pixel format.
#define isALPHA(x)
Definition: swscale.c:50
#define FFALIGN(x, a)
Definition: macros.h:48
av_cold void ff_sws_init_input_funcs(SwsContext *c)
Definition: input.c:759
yuv2packedX_fn yuv2packedX
#define AV_WL16(p, val)
Definition: intreadwrite.h:231
int32_t * vChrFilterPos
Array of vertical filter starting positions for each dst[i] for chroma planes.
#define DEBUG_BUFFERS(...)
Definition: swscale.c:339
int dstH
Height of destination luma/alpha planes.
#define src
Definition: vp8dsp.c:254
yuv2anyX_fn yuv2anyX
static void 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)
Definition: swscale.c:288
int16_t ** chrVPixBuf
Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
#define ARCH_X86
Definition: config.h:33
int32_t * hChrFilterPos
Array of horizontal filter starting positions for each dst[i] for chroma planes.
int hLumFilterSize
Horizontal filter size for luma/alpha pixels.
SwsFunc ff_getSwsFunc(SwsContext *c)
Return function pointer to fastest main scaler path function depending on architecture and available ...
Definition: swscale.c:773
static void chrRangeToJpeg_c(int16_t *dstU, int16_t *dstV, int width)
Definition: swscale.c:168
yuv2packed1_fn yuv2packed1
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:110
const uint8_t ff_dither_8x8_128[8][8]
Definition: swscale.c:38
int vChrBufSize
Number of vertical chroma lines allocated in the ring buffer.
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)
#define FFMAX(a, b)
Definition: common.h:64
int chrDstW
Width of destination chroma planes.
static void hyscale_fast_c(SwsContext *c, int16_t *dst, int dstWidth, const uint8_t *src, int srcW, int xInc)
Definition: swscale.c:238
static av_cold void sws_init_swscale(SwsContext *c)
Definition: swscale.c:723
int32_t * hLumFilterPos
Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
int hChrFilterSize
Horizontal filter size for chroma pixels.
static void filter(MpegAudioContext *s, int ch, const short *samples, int incr)
Definition: mpegaudioenc.c:307
av_cold void ff_sws_init_swscale_ppc(SwsContext *c)
int dstRange
0 = MPG YUV range, 1 = JPG YUV range (destination image).
void(* lumToYV12)(uint8_t *dst, const uint8_t *src, int width, uint32_t *pal)
Unscaled conversion of luma plane to YV12 for horizontal scaler.
#define FFMIN(a, b)
Definition: common.h:66
uint8_t * formatConvBuffer
static av_always_inline int is9_OR_10BPS(enum AVPixelFormat pix_fmt)
yuv2planar1_fn yuv2plane1
int vLumBufSize
Number of vertical luma/alpha lines allocated in the ring buffer.
int16_t ** chrUPixBuf
Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
yuv2interleavedX_fn yuv2nv12cX
static av_always_inline void hyscale(SwsContext *c, int16_t *dst, int dstWidth, const uint8_t *src_in[4], int srcW, int xInc, const int16_t *hLumFilter, const int32_t *hLumFilterPos, int hLumFilterSize, uint8_t *formatConvBuffer, uint32_t *pal, int isAlpha)
Definition: swscale.c:252
int32_t
void(* lumConvertRange)(int16_t *dst, int width)
Color range conversion function for luma plane if needed.
int dstW
Width of destination luma/alpha planes.
int(* SwsFunc)(struct SwsContext *context, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
if(ac->has_optimized_func)
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:39
static av_always_inline int isBE(enum AVPixelFormat pix_fmt)
int32_t lumMmxFilter[4 *MAX_FILTER_SIZE]
NULL
Definition: eval.c:55
static int width
Definition: utils.c:156
#define src1
Definition: h264pred.c:139
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...
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:80
yuv2planarX_fn yuv2planeX
static void(WINAPI *cond_broadcast)(pthread_cond_t *cond)
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 FILL8TO9_OR_10(wfunc)
static av_always_inline void fillPlane(uint8_t *plane, int stride, int width, int height, int y, uint8_t val)
Definition: swscale.c:53
static void lumRangeFromJpeg16_c(int16_t *_dst, int width)
Definition: swscale.c:230
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...
int vLumFilterSize
Vertical filter size for luma/alpha pixels.
byte swapping routines
static av_always_inline int isPlanarYUV(enum AVPixelFormat pix_fmt)
int16_t * vChrFilter
Array of vertical filter coefficients for chroma planes.
void(* readChrPlanar)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src[4], int width)
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:47
int16_t * hLumFilter
Array of horizontal filter coefficients for luma/alpha planes.
static void fill_plane9or10(uint8_t *plane, int stride, int width, int height, int y, uint8_t val, const int dst_depth, const int big_endian)
Definition: swscale.c:64
const uint8_t * chrDither8
static void chrRangeToJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width)
Definition: swscale.c:200
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:343
int height
Definition: gxfenc.c:72
Y , 1bpp, 0 is black, 1 is white, in each byte pixels are ordered from the msb to the lsb...
Definition: pixfmt.h:69
int lastInChrBuf
Last scaled horizontal chroma line from source in the ring buffer.
yuv2packed2_fn yuv2packed2
#define CONFIG_SWSCALE_ALPHA
Definition: config.h:408
Y , 1bpp, 0 is white, 1 is black, in each byte pixels are ordered from the msb to the lsb...
Definition: pixfmt.h:68
void(* readLumPlanar)(uint8_t *dst, const uint8_t *src[4], int width)
Functions to read planar input, such as planar RGB, and convert internally to Y/UV/A.
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...
enum AVPixelFormat srcFormat
Source pixel format.
int32_t chrMmxFilter[4 *MAX_FILTER_SIZE]
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:1352
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 ...
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...
static void chrRangeFromJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width)
Definition: swscale.c:211
int16_t * vLumFilter
Array of vertical filter coefficients for luma/alpha planes.
static const uint8_t sws_pb_64[8]
Definition: swscale.c:49
#define av_always_inline
Definition: attributes.h:40
static av_always_inline void hcscale(SwsContext *c, int16_t *dst1, int16_t *dst2, int dstWidth, const uint8_t *src_in[4], int srcW, int xInc, const int16_t *hChrFilter, const int32_t *hChrFilterPos, int hChrFilterSize, uint8_t *formatConvBuffer, uint32_t *pal)
Definition: swscale.c:303
int16_t * hChrFilter
Array of horizontal filter coefficients for chroma planes.
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:133
void(* alpToYV12)(uint8_t *dst, const uint8_t *src, int width, uint32_t *pal)
Unscaled conversion of alpha plane to YV12 for horizontal scaler.
int chrSrcW
Width of source chroma planes.
int depth
Number of bits in the component.
Definition: pixdesc.h:57
#define AV_WB16(p, val)
Definition: intreadwrite.h:218
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:57
uint32_t pal_yuv[256]
#define AV_CEIL_RSHIFT(a, b)
Fast a / (1 << b) rounded toward +inf, assuming a >= 0 and b >= 0.
Definition: common.h:57
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:149