FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libswscale/swscale.c
Date: 2024-05-03 15:42:48
Exec Total Coverage
Lines: 567 671 84.5%
Functions: 29 33 87.9%
Branches: 371 488 76.0%
Line Branch Exec Source
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 <stdint.h>
22 #include <stdio.h>
23 #include <string.h>
24
25 #include "libavutil/avassert.h"
26 #include "libavutil/bswap.h"
27 #include "libavutil/common.h"
28 #include "libavutil/cpu.h"
29 #include "libavutil/emms.h"
30 #include "libavutil/intreadwrite.h"
31 #include "libavutil/mem.h"
32 #include "libavutil/mem_internal.h"
33 #include "libavutil/pixdesc.h"
34 #include "config.h"
35 #include "swscale_internal.h"
36 #include "swscale.h"
37
38 DECLARE_ALIGNED(8, const uint8_t, ff_dither_8x8_128)[9][8] = {
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 { 36, 68, 60, 92, 34, 66, 58, 90, },
48 };
49
50 DECLARE_ALIGNED(8, static const uint8_t, sws_pb_64)[8] = {
51 64, 64, 64, 64, 64, 64, 64, 64
52 };
53
54 5751 static av_always_inline void fillPlane(uint8_t *plane, int stride, int width,
55 int height, int y, uint8_t val)
56 {
57 int i;
58 5751 uint8_t *ptr = plane + stride * y;
59
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 187023 for (i = 0; i < height; i++) {
60 181272 memset(ptr, val, width);
61 181272 ptr += stride;
62 }
63 5751 }
64
65 38904 static void hScale16To19_c(SwsContext *c, int16_t *_dst, int dstW,
66 const uint8_t *_src, const int16_t *filter,
67 const int32_t *filterPos, int filterSize)
68 {
69 38904 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(c->srcFormat);
70 int i;
71 38904 int32_t *dst = (int32_t *) _dst;
72 38904 const uint16_t *src = (const uint16_t *) _src;
73 38904 int bits = desc->comp[0].depth - 1;
74 38904 int sh = bits - 4;
75
76
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 38904 if ((isAnyRGB(c->srcFormat) || c->srcFormat==AV_PIX_FMT_PAL8) && desc->comp[0].depth<16) {
77 2040 sh = 9;
78
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 36864 } else if (desc->flags & AV_PIX_FMT_FLAG_FLOAT) { /* float input are process like uint 16bpc */
79 4608 sh = 16 - 1 - 4;
80 }
81
82
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 7040184 for (i = 0; i < dstW; i++) {
83 int j;
84 7001280 int srcPos = filterPos[i];
85 7001280 int val = 0;
86
87
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 55128960 for (j = 0; j < filterSize; j++) {
88 48127680 val += src[srcPos + j] * filter[filterSize * i + j];
89 }
90 // filter=14 bit, input=16 bit, output=30 bit, >> 11 makes 19 bit
91 7001280 dst[i] = FFMIN(val >> sh, (1 << 19) - 1);
92 }
93 38904 }
94
95 6691145 static void hScale16To15_c(SwsContext *c, int16_t *dst, int dstW,
96 const uint8_t *_src, const int16_t *filter,
97 const int32_t *filterPos, int filterSize)
98 {
99 6691145 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(c->srcFormat);
100 int i;
101 6691145 const uint16_t *src = (const uint16_t *) _src;
102 6691145 int sh = desc->comp[0].depth - 1;
103
104
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 6691145 if (sh<15) {
105
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 6104421 sh = isAnyRGB(c->srcFormat) || c->srcFormat==AV_PIX_FMT_PAL8 ? 13 : (desc->comp[0].depth - 1);
106
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 586724 } else if (desc->flags & AV_PIX_FMT_FLAG_FLOAT) { /* float input are process like uint 16bpc */
107 ✗ sh = 16 - 1;
108 }
109
110
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 1740912794 for (i = 0; i < dstW; i++) {
111 int j;
112 1734221649 int srcPos = filterPos[i];
113 1734221649 int val = 0;
114
115
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 5104092930 for (j = 0; j < filterSize; j++) {
116 3369871281 val += src[srcPos + j] * filter[filterSize * i + j];
117 }
118 // filter=14 bit, input=16 bit, output=30 bit, >> 15 makes 15 bit
119 1734221649 dst[i] = FFMIN(val >> sh, (1 << 15) - 1);
120 }
121 6691145 }
122
123 // bilinear / bicubic scaling
124 13011581 static void hScale8To15_c(SwsContext *c, int16_t *dst, int dstW,
125 const uint8_t *src, const int16_t *filter,
126 const int32_t *filterPos, int filterSize)
127 {
128 int i;
129
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 3866711241 for (i = 0; i < dstW; i++) {
130 int j;
131 3853699660 int srcPos = filterPos[i];
132 3853699660 int val = 0;
133
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 14128065678 for (j = 0; j < filterSize; j++) {
134 10274366018 val += ((int)src[srcPos + j]) * filter[filterSize * i + j];
135 }
136 3853699660 dst[i] = FFMIN(val >> 7, (1 << 15) - 1); // the cubic equation does overflow ...
137 }
138 13011581 }
139
140 891519 static void hScale8To19_c(SwsContext *c, int16_t *_dst, int dstW,
141 const uint8_t *src, const int16_t *filter,
142 const int32_t *filterPos, int filterSize)
143 {
144 int i;
145 891519 int32_t *dst = (int32_t *) _dst;
146
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 282821467 for (i = 0; i < dstW; i++) {
147 int j;
148 281929948 int srcPos = filterPos[i];
149 281929948 int val = 0;
150
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 784128008 for (j = 0; j < filterSize; j++) {
151 502198060 val += ((int)src[srcPos + j]) * filter[filterSize * i + j];
152 }
153 281929948 dst[i] = FFMIN(val >> 3, (1 << 19) - 1); // the cubic equation does overflow ...
154 }
155 891519 }
156
157 // FIXME all pal and rgb srcFormats could do this conversion as well
158 // FIXME all scalers more complex than bilinear could do half of this transform
159 209164 static void chrRangeToJpeg_c(int16_t *dstU, int16_t *dstV, int width)
160 {
161 int i;
162
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 43290332 for (i = 0; i < width; i++) {
163 43081168 dstU[i] = (FFMIN(dstU[i], 30775) * 4663 - 9289992) >> 12; // -264
164 43081168 dstV[i] = (FFMIN(dstV[i], 30775) * 4663 - 9289992) >> 12; // -264
165 }
166 209164 }
167
168 207909 static void chrRangeFromJpeg_c(int16_t *dstU, int16_t *dstV, int width)
169 {
170 int i;
171
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 35724807 for (i = 0; i < width; i++) {
172 35516898 dstU[i] = (dstU[i] * 1799 + 4081085) >> 11; // 1469
173 35516898 dstV[i] = (dstV[i] * 1799 + 4081085) >> 11; // 1469
174 }
175 207909 }
176
177 628619 static void lumRangeToJpeg_c(int16_t *dst, int width)
178 {
179 int i;
180
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 213134555 for (i = 0; i < width; i++)
181 212505936 dst[i] = (FFMIN(dst[i], 30189) * 19077 - 39057361) >> 14;
182 628619 }
183
184 337183 static void lumRangeFromJpeg_c(int16_t *dst, int width)
185 {
186 int i;
187
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 116211031 for (i = 0; i < width; i++)
188 115873848 dst[i] = (dst[i] * 14071 + 33561947) >> 14;
189 337183 }
190
191 ✗ static void chrRangeToJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width)
192 {
193 int i;
194 ✗ int32_t *dstU = (int32_t *) _dstU;
195 ✗ int32_t *dstV = (int32_t *) _dstV;
196 ✗ for (i = 0; i < width; i++) {
197 ✗ dstU[i] = (FFMIN(dstU[i], 30775 << 4) * 4663 - (9289992 << 4)) >> 12; // -264
198 ✗ dstV[i] = (FFMIN(dstV[i], 30775 << 4) * 4663 - (9289992 << 4)) >> 12; // -264
199 }
200 ✗ }
201
202 ✗ static void chrRangeFromJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width)
203 {
204 int i;
205 ✗ int32_t *dstU = (int32_t *) _dstU;
206 ✗ int32_t *dstV = (int32_t *) _dstV;
207 ✗ for (i = 0; i < width; i++) {
208 ✗ dstU[i] = (dstU[i] * 1799 + (4081085 << 4)) >> 11; // 1469
209 ✗ dstV[i] = (dstV[i] * 1799 + (4081085 << 4)) >> 11; // 1469
210 }
211 ✗ }
212
213 33375 static void lumRangeToJpeg16_c(int16_t *_dst, int width)
214 {
215 int i;
216 33375 int32_t *dst = (int32_t *) _dst;
217
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 11709975 for (i = 0; i < width; i++) {
218 11676600 dst[i] = ((int)(FFMIN(dst[i], 30189 << 4) * 4769U - (39057361 << 2))) >> 12;
219 }
220 33375 }
221
222 ✗ static void lumRangeFromJpeg16_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] = (dst[i]*(14071/4) + (33561947<<4)/4)>>12;
228 ✗ }
229
230
231 #define DEBUG_SWSCALE_BUFFERS 0
232 #define DEBUG_BUFFERS(...) \
233 if (DEBUG_SWSCALE_BUFFERS) \
234 av_log(c, AV_LOG_DEBUG, __VA_ARGS__)
235
236 68469 static int swscale(SwsContext *c, const uint8_t *src[],
237 int srcStride[], int srcSliceY, int srcSliceH,
238 uint8_t *dst[], int dstStride[],
239 int dstSliceY, int dstSliceH)
240 {
241
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 68469 const int scale_dst = dstSliceY > 0 || dstSliceH < c->dstH;
242
243 /* load a few things into local vars to make the code more readable?
244 * and faster */
245 68469 const int dstW = c->dstW;
246 68469 int dstH = c->dstH;
247
248 68469 const enum AVPixelFormat dstFormat = c->dstFormat;
249 68469 const int flags = c->flags;
250 68469 int32_t *vLumFilterPos = c->vLumFilterPos;
251 68469 int32_t *vChrFilterPos = c->vChrFilterPos;
252
253 68469 const int vLumFilterSize = c->vLumFilterSize;
254 68469 const int vChrFilterSize = c->vChrFilterSize;
255
256 68469 yuv2planar1_fn yuv2plane1 = c->yuv2plane1;
257 68469 yuv2planarX_fn yuv2planeX = c->yuv2planeX;
258 68469 yuv2interleavedX_fn yuv2nv12cX = c->yuv2nv12cX;
259 68469 yuv2packed1_fn yuv2packed1 = c->yuv2packed1;
260 68469 yuv2packed2_fn yuv2packed2 = c->yuv2packed2;
261 68469 yuv2packedX_fn yuv2packedX = c->yuv2packedX;
262 68469 yuv2anyX_fn yuv2anyX = c->yuv2anyX;
263 68469 const int chrSrcSliceY = srcSliceY >> c->chrSrcVSubSample;
264 68469 const int chrSrcSliceH = AV_CEIL_RSHIFT(srcSliceH, c->chrSrcVSubSample);
265
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 127664 int should_dither = isNBPS(c->srcFormat) ||
266 59195 is16BPS(c->srcFormat);
267 int lastDstY;
268
269 /* vars which will change and which we need to store back in the context */
270 68469 int dstY = c->dstY;
271 68469 int lastInLumBuf = c->lastInLumBuf;
272 68469 int lastInChrBuf = c->lastInChrBuf;
273
274 68469 int lumStart = 0;
275 68469 int lumEnd = c->descIndex[0];
276 68469 int chrStart = lumEnd;
277 68469 int chrEnd = c->descIndex[1];
278 68469 int vStart = chrEnd;
279 68469 int vEnd = c->numDesc;
280 68469 SwsSlice *src_slice = &c->slice[lumStart];
281 68469 SwsSlice *hout_slice = &c->slice[c->numSlice-2];
282 68469 SwsSlice *vout_slice = &c->slice[c->numSlice-1];
283 68469 SwsFilterDescriptor *desc = c->desc;
284
285 68469 int needAlpha = c->needAlpha;
286
287 68469 int hasLumHoles = 1;
288 68469 int hasChrHoles = 1;
289
290
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 68469 if (isPacked(c->srcFormat)) {
291 11052 src[1] =
292 11052 src[2] =
293 11052 src[3] = src[0];
294 11052 srcStride[1] =
295 11052 srcStride[2] =
296 11052 srcStride[3] = srcStride[0];
297 }
298 68469 srcStride[1] *= 1 << c->vChrDrop;
299 68469 srcStride[2] *= 1 << c->vChrDrop;
300
301 DEBUG_BUFFERS("swscale() %p[%d] %p[%d] %p[%d] %p[%d] -> %p[%d] %p[%d] %p[%d] %p[%d]\n",
302 src[0], srcStride[0], src[1], srcStride[1],
303 src[2], srcStride[2], src[3], srcStride[3],
304 dst[0], dstStride[0], dst[1], dstStride[1],
305 dst[2], dstStride[2], dst[3], dstStride[3]);
306 DEBUG_BUFFERS("srcSliceY: %d srcSliceH: %d dstY: %d dstH: %d\n",
307 srcSliceY, srcSliceH, dstY, dstH);
308 DEBUG_BUFFERS("vLumFilterSize: %d vChrFilterSize: %d\n",
309 vLumFilterSize, vChrFilterSize);
310
311
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 68469 if (dstStride[0]&15 || dstStride[1]&15 ||
312
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 57971 dstStride[2]&15 || dstStride[3]&15) {
313
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 10498 SwsContext *const ctx = c->parent ? c->parent : c;
314
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 10498 if (flags & SWS_PRINT_INFO &&
315 ✗ !atomic_exchange_explicit(&ctx->stride_unaligned_warned, 1, memory_order_relaxed)) {
316 ✗ av_log(c, AV_LOG_WARNING,
317 "Warning: dstStride is not aligned!\n"
318 " ->cannot do aligned memory accesses anymore\n");
319 }
320 }
321
322 #if ARCH_X86
323
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 68469 if ( (uintptr_t)dst[0]&15 || (uintptr_t)dst[1]&15 || (uintptr_t)dst[2]&15
324
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 64379 || (uintptr_t)src[0]&15 || (uintptr_t)src[1]&15 || (uintptr_t)src[2]&15
325
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 61704 || dstStride[0]&15 || dstStride[1]&15 || dstStride[2]&15 || dstStride[3]&15
326
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 54765 || srcStride[0]&15 || srcStride[1]&15 || srcStride[2]&15 || srcStride[3]&15
327 ) {
328
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 13711 SwsContext *const ctx = c->parent ? c->parent : c;
329 13711 int cpu_flags = av_get_cpu_flags();
330
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 13711 if (flags & SWS_PRINT_INFO && HAVE_MMXEXT && (cpu_flags & AV_CPU_FLAG_SSE2) &&
331 ✗ !atomic_exchange_explicit(&ctx->stride_unaligned_warned,1, memory_order_relaxed)) {
332 ✗ av_log(c, AV_LOG_WARNING, "Warning: data is not aligned! This can lead to a speed loss\n");
333 }
334 }
335 #endif
336
337
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 68469 if (scale_dst) {
338 37070 dstY = dstSliceY;
339 37070 dstH = dstY + dstSliceH;
340 37070 lastInLumBuf = -1;
341 37070 lastInChrBuf = -1;
342
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 31399 } else if (srcSliceY == 0) {
343 /* Note the user might start scaling the picture in the middle so this
344 * will not get executed. This is not really intended but works
345 * currently, so people might do it. */
346 31343 dstY = 0;
347 31343 lastInLumBuf = -1;
348 31343 lastInChrBuf = -1;
349 }
350
351
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 68469 if (!should_dither) {
352 58078 c->chrDither8 = c->lumDither8 = sws_pb_64;
353 }
354 68469 lastDstY = dstY;
355
356 68469 ff_init_vscale_pfn(c, yuv2plane1, yuv2planeX, yuv2nv12cX,
357 yuv2packed1, yuv2packed2, yuv2packedX, yuv2anyX, c->use_mmx_vfilter);
358
359 68469 ff_init_slice_from_src(src_slice, (uint8_t**)src, srcStride, c->srcW,
360 srcSliceY, srcSliceH, chrSrcSliceY, chrSrcSliceH, 1);
361
362 68469 ff_init_slice_from_src(vout_slice, (uint8_t**)dst, dstStride, c->dstW,
363 68469 dstY, dstSliceH, dstY >> c->chrDstVSubSample,
364 68469 AV_CEIL_RSHIFT(dstSliceH, c->chrDstVSubSample), scale_dst);
365
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 68469 if (srcSliceY == 0) {
366 68413 hout_slice->plane[0].sliceY = lastInLumBuf + 1;
367 68413 hout_slice->plane[1].sliceY = lastInChrBuf + 1;
368 68413 hout_slice->plane[2].sliceY = lastInChrBuf + 1;
369 68413 hout_slice->plane[3].sliceY = lastInLumBuf + 1;
370
371 68413 hout_slice->plane[0].sliceH =
372 68413 hout_slice->plane[1].sliceH =
373 68413 hout_slice->plane[2].sliceH =
374 68413 hout_slice->plane[3].sliceH = 0;
375 68413 hout_slice->width = dstW;
376 }
377
378
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 11423932 for (; dstY < dstH; dstY++) {
379 11355519 const int chrDstY = dstY >> c->chrDstVSubSample;
380 11355519 int use_mmx_vfilter= c->use_mmx_vfilter;
381
382 // First line needed as input
383 11355519 const int firstLumSrcY = FFMAX(1 - vLumFilterSize, vLumFilterPos[dstY]);
384
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 11355519 const int firstLumSrcY2 = FFMAX(1 - vLumFilterSize, vLumFilterPos[FFMIN(dstY | ((1 << c->chrDstVSubSample) - 1), c->dstH - 1)]);
385 // First line needed as input
386 11355519 const int firstChrSrcY = FFMAX(1 - vChrFilterSize, vChrFilterPos[chrDstY]);
387
388 // Last line needed as input
389 11355519 int lastLumSrcY = FFMIN(c->srcH, firstLumSrcY + vLumFilterSize) - 1;
390 11355519 int lastLumSrcY2 = FFMIN(c->srcH, firstLumSrcY2 + vLumFilterSize) - 1;
391 11355519 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
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 11355519 if (firstLumSrcY > lastInLumBuf) {
399
400 7560740 hasLumHoles = lastInLumBuf != firstLumSrcY - 1;
401
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 7560740 if (hasLumHoles) {
402 217041 hout_slice->plane[0].sliceY = firstLumSrcY;
403 217041 hout_slice->plane[3].sliceY = firstLumSrcY;
404 217041 hout_slice->plane[0].sliceH =
405 217041 hout_slice->plane[3].sliceH = 0;
406 }
407
408 7560740 lastInLumBuf = firstLumSrcY - 1;
409 }
410
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 11355519 if (firstChrSrcY > lastInChrBuf) {
411
412 1400353 hasChrHoles = lastInChrBuf != firstChrSrcY - 1;
413
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 1400353 if (hasChrHoles) {
414 308691 hout_slice->plane[1].sliceY = firstChrSrcY;
415 308691 hout_slice->plane[2].sliceY = firstChrSrcY;
416 308691 hout_slice->plane[1].sliceH =
417 308691 hout_slice->plane[2].sliceH = 0;
418 }
419
420 1400353 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
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 22710987 enough_lines = lastLumSrcY2 < srcSliceY + srcSliceH &&
431
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 11355468 lastChrSrcY < AV_CEIL_RSHIFT(srcSliceY + srcSliceH, c->chrSrcVSubSample);
432
433
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 11355519 if (!enough_lines) {
434 56 lastLumSrcY = srcSliceY + srcSliceH - 1;
435 56 lastChrSrcY = chrSrcSliceY + chrSrcSliceH - 1;
436 DEBUG_BUFFERS("buffering slice: lastLumSrcY %d lastChrSrcY %d\n",
437 lastLumSrcY, lastChrSrcY);
438 }
439
440
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 11355519 av_assert0((lastLumSrcY - firstLumSrcY + 1) <= hout_slice->plane[0].available_lines);
441
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 11355519 av_assert0((lastChrSrcY - firstChrSrcY + 1) <= hout_slice->plane[1].available_lines);
442
443
444 11355519 posY = hout_slice->plane[0].sliceY + hout_slice->plane[0].sliceH;
445
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 11355519 if (posY <= lastLumSrcY && !hasLumHoles) {
446 1393876 firstPosY = FFMAX(firstLumSrcY, posY);
447
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 1393876 lastPosY = FFMIN(firstLumSrcY + hout_slice->plane[0].available_lines - 1, srcSliceY + srcSliceH - 1);
448 } else {
449 9961643 firstPosY = posY;
450 9961643 lastPosY = lastLumSrcY;
451 }
452
453 11355519 cPosY = hout_slice->plane[1].sliceY + hout_slice->plane[1].sliceH;
454
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 11355519 if (cPosY <= lastChrSrcY && !hasChrHoles) {
455 905507 firstCPosY = FFMAX(firstChrSrcY, cPosY);
456 905507 lastCPosY = FFMIN(firstChrSrcY + hout_slice->plane[1].available_lines - 1, AV_CEIL_RSHIFT(srcSliceY + srcSliceH, c->chrSrcVSubSample) - 1);
457 } else {
458 10450012 firstCPosY = cPosY;
459 10450012 lastCPosY = lastChrSrcY;
460 }
461
462 11355519 ff_rotate_slice(hout_slice, lastPosY, lastCPosY);
463
464
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 11355519 if (posY < lastLumSrcY + 1) {
465
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 3999953 for (i = lumStart; i < lumEnd; ++i)
466 2137887 desc[i].process(c, &desc[i], firstPosY, lastPosY - firstPosY + 1);
467 }
468
469 11355519 lastInLumBuf = lastLumSrcY;
470
471
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 11355519 if (cPosY < lastChrSrcY + 1) {
472
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 3575914 for (i = chrStart; i < chrEnd; ++i)
473 1972259 desc[i].process(c, &desc[i], firstCPosY, lastCPosY - firstCPosY + 1);
474 }
475
476 11355519 lastInChrBuf = lastChrSrcY;
477
478
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 11355519 if (!enough_lines)
479 56 break; // we can't output a dstY line so let's try with the next slice
480
481 #if HAVE_MMX_INLINE
482 11355463 ff_updateMMXDitherTables(c, dstY);
483 #endif
484
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 11355463 if (should_dither) {
485 3018178 c->chrDither8 = ff_dither_8x8_128[chrDstY & 7];
486 3018178 c->lumDither8 = ff_dither_8x8_128[dstY & 7];
487 }
488
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 11355463 if (dstY >= c->dstH - 2) {
489 /* hmm looks like we can't use MMX here without overwriting
490 * this array's tail */
491 70944 ff_sws_init_output_funcs(c, &yuv2plane1, &yuv2planeX, &yuv2nv12cX,
492 &yuv2packed1, &yuv2packed2, &yuv2packedX, &yuv2anyX);
493 70944 use_mmx_vfilter= 0;
494 70944 ff_init_vscale_pfn(c, yuv2plane1, yuv2planeX, yuv2nv12cX,
495 yuv2packed1, yuv2packed2, yuv2packedX, yuv2anyX, use_mmx_vfilter);
496 }
497
498
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 31529260 for (i = vStart; i < vEnd; ++i)
499 20173797 desc[i].process(c, &desc[i], dstY, 1);
500 }
501
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 68469 if (isPlanar(dstFormat) && isALPHA(dstFormat) && !needAlpha) {
502 6493 int offset = lastDstY - dstSliceY;
503 6493 int length = dstW;
504 6493 int height = dstY - lastDstY;
505
506
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 7153 if (is16BPS(dstFormat) || isNBPS(dstFormat)) {
507 660 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(dstFormat);
508 660 fillPlane16(dst[3], dstStride[3], length, height, offset,
509 660 1, desc->comp[3].depth,
510 isBE(dstFormat));
511
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 5833 } else if (is32BPS(dstFormat)) {
512 82 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(dstFormat);
513 164 fillPlane32(dst[3], dstStride[3], length, height, offset,
514 82 1, desc->comp[3].depth,
515 82 isBE(dstFormat), desc->flags & AV_PIX_FMT_FLAG_FLOAT);
516 } else
517 5751 fillPlane(dst[3], dstStride[3], length, height, offset, 255);
518 }
519
520 #if HAVE_MMXEXT_INLINE
521
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 68469 if (av_get_cpu_flags() & AV_CPU_FLAG_MMXEXT)
522 183 __asm__ volatile ("sfence" ::: "memory");
523 #endif
524 68469 emms_c();
525
526 /* store changed local vars back in the context */
527 68469 c->dstY = dstY;
528 68469 c->lastInLumBuf = lastInLumBuf;
529 68469 c->lastInChrBuf = lastInChrBuf;
530
531 68469 return dstY - lastDstY;
532 }
533
534 23689 av_cold void ff_sws_init_range_convert(SwsContext *c)
535 {
536 23689 c->lumConvertRange = NULL;
537 23689 c->chrConvertRange = NULL;
538
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 23689 if (c->srcRange != c->dstRange && !isAnyRGB(c->dstFormat)) {
539
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 1206 if (c->dstBpc <= 14) {
540
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 1147 if (c->srcRange) {
541 384 c->lumConvertRange = lumRangeFromJpeg_c;
542 384 c->chrConvertRange = chrRangeFromJpeg_c;
543 } else {
544 763 c->lumConvertRange = lumRangeToJpeg_c;
545 763 c->chrConvertRange = chrRangeToJpeg_c;
546 }
547 } else {
548
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 59 if (c->srcRange) {
549 ✗ c->lumConvertRange = lumRangeFromJpeg16_c;
550 ✗ c->chrConvertRange = chrRangeFromJpeg16_c;
551 } else {
552 59 c->lumConvertRange = lumRangeToJpeg16_c;
553 59 c->chrConvertRange = chrRangeToJpeg16_c;
554 }
555 }
556 }
557 23689 }
558
559 16731 static av_cold void sws_init_swscale(SwsContext *c)
560 {
561 16731 enum AVPixelFormat srcFormat = c->srcFormat;
562
563 16731 ff_sws_init_output_funcs(c, &c->yuv2plane1, &c->yuv2planeX,
564 &c->yuv2nv12cX, &c->yuv2packed1,
565 &c->yuv2packed2, &c->yuv2packedX, &c->yuv2anyX);
566
567 16731 ff_sws_init_input_funcs(c);
568
569
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 16731 if (c->srcBpc == 8) {
570
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 15658 if (c->dstBpc <= 14) {
571 14686 c->hyScale = c->hcScale = hScale8To15_c;
572
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 14686 if (c->flags & SWS_FAST_BILINEAR) {
573 ✗ c->hyscale_fast = ff_hyscale_fast_c;
574 ✗ c->hcscale_fast = ff_hcscale_fast_c;
575 }
576 } else {
577 972 c->hyScale = c->hcScale = hScale8To19_c;
578 }
579 } else {
580
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 1073 c->hyScale = c->hcScale = c->dstBpc > 14 ? hScale16To19_c
581 : hScale16To15_c;
582 }
583
584 16731 ff_sws_init_range_convert(c);
585
586
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 16731 if (!(isGray(srcFormat) || isGray(c->dstFormat) ||
587 srcFormat == AV_PIX_FMT_MONOBLACK || srcFormat == AV_PIX_FMT_MONOWHITE))
588 16266 c->needs_hcscale = 1;
589 16731 }
590
591 16731 void ff_sws_init_scale(SwsContext *c)
592 {
593 16731 sws_init_swscale(c);
594
595 #if ARCH_PPC
596 ff_sws_init_swscale_ppc(c);
597 #elif ARCH_X86
598 16731 ff_sws_init_swscale_x86(c);
599 #elif ARCH_AARCH64
600 ff_sws_init_swscale_aarch64(c);
601 #elif ARCH_ARM
602 ff_sws_init_swscale_arm(c);
603 #elif ARCH_LOONGARCH64
604 ff_sws_init_swscale_loongarch(c);
605 #endif
606 16731 }
607
608 250374 static void reset_ptr(const uint8_t *src[], enum AVPixelFormat format)
609 {
610
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 250374 if (!isALPHA(format))
611 181132 src[3] = NULL;
612
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 250374 if (!isPlanar(format)) {
613 134102 src[3] = src[2] = NULL;
614
615
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 134102 if (!usePal(format))
616 96381 src[1] = NULL;
617 }
618 250374 }
619
620 250392 static int check_image_pointers(const uint8_t * const data[4], enum AVPixelFormat pix_fmt,
621 const int linesizes[4])
622 {
623 250392 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
624 int i;
625
626 av_assert2(desc);
627
628
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 1251960 for (i = 0; i < 4; i++) {
629 1001568 int plane = desc->comp[i].plane;
630
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 1001568 if (!data[plane] || !linesizes[plane])
631 ✗ return 0;
632 }
633
634 250392 return 1;
635 }
636
637 3 static void xyz12Torgb48(struct SwsContext *c, uint16_t *dst,
638 const uint16_t *src, int stride, int h)
639 {
640 int xp,yp;
641 3 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(c->srcFormat);
642
643
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 867 for (yp=0; yp<h; yp++) {
644
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 304992 for (xp=0; xp+2<stride; xp+=3) {
645 int x, y, z, r, g, b;
646
647
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 304128 if (desc->flags & AV_PIX_FMT_FLAG_BE) {
648 101376 x = AV_RB16(src + xp + 0);
649 101376 y = AV_RB16(src + xp + 1);
650 101376 z = AV_RB16(src + xp + 2);
651 } else {
652 202752 x = AV_RL16(src + xp + 0);
653 202752 y = AV_RL16(src + xp + 1);
654 202752 z = AV_RL16(src + xp + 2);
655 }
656
657 304128 x = c->xyzgamma[x>>4];
658 304128 y = c->xyzgamma[y>>4];
659 304128 z = c->xyzgamma[z>>4];
660
661 // convert from XYZlinear to sRGBlinear
662 304128 r = c->xyz2rgb_matrix[0][0] * x +
663 304128 c->xyz2rgb_matrix[0][1] * y +
664 304128 c->xyz2rgb_matrix[0][2] * z >> 12;
665 304128 g = c->xyz2rgb_matrix[1][0] * x +
666 304128 c->xyz2rgb_matrix[1][1] * y +
667 304128 c->xyz2rgb_matrix[1][2] * z >> 12;
668 304128 b = c->xyz2rgb_matrix[2][0] * x +
669 304128 c->xyz2rgb_matrix[2][1] * y +
670 304128 c->xyz2rgb_matrix[2][2] * z >> 12;
671
672 // limit values to 12-bit depth
673 304128 r = av_clip_uintp2(r, 12);
674 304128 g = av_clip_uintp2(g, 12);
675 304128 b = av_clip_uintp2(b, 12);
676
677 // convert from sRGBlinear to RGB and scale from 12bit to 16bit
678
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 304128 if (desc->flags & AV_PIX_FMT_FLAG_BE) {
679 101376 AV_WB16(dst + xp + 0, c->rgbgamma[r] << 4);
680 101376 AV_WB16(dst + xp + 1, c->rgbgamma[g] << 4);
681 101376 AV_WB16(dst + xp + 2, c->rgbgamma[b] << 4);
682 } else {
683 202752 AV_WL16(dst + xp + 0, c->rgbgamma[r] << 4);
684 202752 AV_WL16(dst + xp + 1, c->rgbgamma[g] << 4);
685 202752 AV_WL16(dst + xp + 2, c->rgbgamma[b] << 4);
686 }
687 }
688 864 src += stride;
689 864 dst += stride;
690 }
691 3 }
692
693 34 static void rgb48Toxyz12(struct SwsContext *c, uint16_t *dst,
694 const uint16_t *src, int stride, int h)
695 {
696 int xp,yp;
697 34 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(c->dstFormat);
698
699
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 9450 for (yp=0; yp<h; yp++) {
700
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 3090696 for (xp=0; xp+2<stride; xp+=3) {
701 int x, y, z, r, g, b;
702
703
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 3081280 if (desc->flags & AV_PIX_FMT_FLAG_BE) {
704 1439264 r = AV_RB16(src + xp + 0);
705 1439264 g = AV_RB16(src + xp + 1);
706 1439264 b = AV_RB16(src + xp + 2);
707 } else {
708 1642016 r = AV_RL16(src + xp + 0);
709 1642016 g = AV_RL16(src + xp + 1);
710 1642016 b = AV_RL16(src + xp + 2);
711 }
712
713 3081280 r = c->rgbgammainv[r>>4];
714 3081280 g = c->rgbgammainv[g>>4];
715 3081280 b = c->rgbgammainv[b>>4];
716
717 // convert from sRGBlinear to XYZlinear
718 3081280 x = c->rgb2xyz_matrix[0][0] * r +
719 3081280 c->rgb2xyz_matrix[0][1] * g +
720 3081280 c->rgb2xyz_matrix[0][2] * b >> 12;
721 3081280 y = c->rgb2xyz_matrix[1][0] * r +
722 3081280 c->rgb2xyz_matrix[1][1] * g +
723 3081280 c->rgb2xyz_matrix[1][2] * b >> 12;
724 3081280 z = c->rgb2xyz_matrix[2][0] * r +
725 3081280 c->rgb2xyz_matrix[2][1] * g +
726 3081280 c->rgb2xyz_matrix[2][2] * b >> 12;
727
728 // limit values to 12-bit depth
729 3081280 x = av_clip_uintp2(x, 12);
730 3081280 y = av_clip_uintp2(y, 12);
731 3081280 z = av_clip_uintp2(z, 12);
732
733 // convert from XYZlinear to X'Y'Z' and scale from 12bit to 16bit
734
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 3081280 if (desc->flags & AV_PIX_FMT_FLAG_BE) {
735 1439264 AV_WB16(dst + xp + 0, c->xyzgammainv[x] << 4);
736 1439264 AV_WB16(dst + xp + 1, c->xyzgammainv[y] << 4);
737 1439264 AV_WB16(dst + xp + 2, c->xyzgammainv[z] << 4);
738 } else {
739 1642016 AV_WL16(dst + xp + 0, c->xyzgammainv[x] << 4);
740 1642016 AV_WL16(dst + xp + 1, c->xyzgammainv[y] << 4);
741 1642016 AV_WL16(dst + xp + 2, c->xyzgammainv[z] << 4);
742 }
743 }
744 9416 src += stride;
745 9416 dst += stride;
746 }
747 34 }
748
749 33301 static void update_palette(SwsContext *c, const uint32_t *pal)
750 {
751
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 8558357 for (int i = 0; i < 256; i++) {
752 8525056 int r, g, b, y, u, v, a = 0xff;
753
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 8525056 if (c->srcFormat == AV_PIX_FMT_PAL8) {
754 8518656 uint32_t p = pal[i];
755 8518656 a = (p >> 24) & 0xFF;
756 8518656 r = (p >> 16) & 0xFF;
757 8518656 g = (p >> 8) & 0xFF;
758 8518656 b = p & 0xFF;
759
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 6400 } else if (c->srcFormat == AV_PIX_FMT_RGB8) {
760 256 r = ( i >> 5 ) * 36;
761 256 g = ((i >> 2) & 7) * 36;
762 256 b = ( i & 3) * 85;
763
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 6144 } else if (c->srcFormat == AV_PIX_FMT_BGR8) {
764 256 b = ( i >> 6 ) * 85;
765 256 g = ((i >> 3) & 7) * 36;
766 256 r = ( i & 7) * 36;
767
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 5888 } else if (c->srcFormat == AV_PIX_FMT_RGB4_BYTE) {
768 256 r = ( i >> 3 ) * 255;
769 256 g = ((i >> 1) & 3) * 85;
770 256 b = ( i & 1) * 255;
771
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 5632 } else if (c->srcFormat == AV_PIX_FMT_GRAY8 || c->srcFormat == AV_PIX_FMT_GRAY8A) {
772 5376 r = g = b = i;
773 } else {
774 av_assert1(c->srcFormat == AV_PIX_FMT_BGR4_BYTE);
775 256 b = ( i >> 3 ) * 255;
776 256 g = ((i >> 1) & 3) * 85;
777 256 r = ( i & 1) * 255;
778 }
779 #define RGB2YUV_SHIFT 15
780 #define BY ( (int) (0.114 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
781 #define BV (-(int) (0.081 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
782 #define BU ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
783 #define GY ( (int) (0.587 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
784 #define GV (-(int) (0.419 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
785 #define GU (-(int) (0.331 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
786 #define RY ( (int) (0.299 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
787 #define RV ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
788 #define RU (-(int) (0.169 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
789
790 8525056 y = av_clip_uint8((RY * r + GY * g + BY * b + ( 33 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
791 8525056 u = av_clip_uint8((RU * r + GU * g + BU * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
792 8525056 v = av_clip_uint8((RV * r + GV * g + BV * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
793 8525056 c->pal_yuv[i]= y + (u<<8) + (v<<16) + ((unsigned)a<<24);
794
795
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 8525056 switch (c->dstFormat) {
796 7630592 case AV_PIX_FMT_BGR32:
797 #if !HAVE_BIGENDIAN
798 case AV_PIX_FMT_RGB24:
799 #endif
800 7630592 c->pal_rgb[i]= r + (g<<8) + (b<<16) + ((unsigned)a<<24);
801 7630592 break;
802 ✗ case AV_PIX_FMT_BGR32_1:
803 #if HAVE_BIGENDIAN
804 case AV_PIX_FMT_BGR24:
805 #endif
806 ✗ c->pal_rgb[i]= a + (r<<8) + (g<<16) + ((unsigned)b<<24);
807 ✗ break;
808 ✗ case AV_PIX_FMT_RGB32_1:
809 #if HAVE_BIGENDIAN
810 case AV_PIX_FMT_RGB24:
811 #endif
812 ✗ c->pal_rgb[i]= a + (b<<8) + (g<<16) + ((unsigned)r<<24);
813 ✗ break;
814 894464 case AV_PIX_FMT_RGB32:
815 #if !HAVE_BIGENDIAN
816 case AV_PIX_FMT_BGR24:
817 #endif
818 default:
819 894464 c->pal_rgb[i]= b + (g<<8) + (r<<16) + ((unsigned)a<<24);
820 }
821 }
822 33301 }
823
824 static int scale_internal(SwsContext *c,
825 const uint8_t * const srcSlice[], const int srcStride[],
826 int srcSliceY, int srcSliceH,
827 uint8_t *const dstSlice[], const int dstStride[],
828 int dstSliceY, int dstSliceH);
829
830 ✗ static int scale_gamma(SwsContext *c,
831 const uint8_t * const srcSlice[], const int srcStride[],
832 int srcSliceY, int srcSliceH,
833 uint8_t * const dstSlice[], const int dstStride[],
834 int dstSliceY, int dstSliceH)
835 {
836 ✗ int ret = scale_internal(c->cascaded_context[0],
837 srcSlice, srcStride, srcSliceY, srcSliceH,
838 ✗ c->cascaded_tmp, c->cascaded_tmpStride, 0, c->srcH);
839
840 ✗ if (ret < 0)
841 ✗ return ret;
842
843 ✗ if (c->cascaded_context[2])
844 ✗ ret = scale_internal(c->cascaded_context[1], (const uint8_t * const *)c->cascaded_tmp,
845 ✗ c->cascaded_tmpStride, srcSliceY, srcSliceH,
846 ✗ c->cascaded1_tmp, c->cascaded1_tmpStride, 0, c->dstH);
847 else
848 ✗ ret = scale_internal(c->cascaded_context[1], (const uint8_t * const *)c->cascaded_tmp,
849 ✗ c->cascaded_tmpStride, srcSliceY, srcSliceH,
850 dstSlice, dstStride, dstSliceY, dstSliceH);
851
852 ✗ if (ret < 0)
853 ✗ return ret;
854
855 ✗ if (c->cascaded_context[2]) {
856 ✗ ret = scale_internal(c->cascaded_context[2], (const uint8_t * const *)c->cascaded1_tmp,
857 ✗ c->cascaded1_tmpStride, c->cascaded_context[1]->dstY - ret,
858 ✗ c->cascaded_context[1]->dstY,
859 dstSlice, dstStride, dstSliceY, dstSliceH);
860 }
861 ✗ return ret;
862 }
863
864 9 static int scale_cascaded(SwsContext *c,
865 const uint8_t * const srcSlice[], const int srcStride[],
866 int srcSliceY, int srcSliceH,
867 uint8_t * const dstSlice[], const int dstStride[],
868 int dstSliceY, int dstSliceH)
869 {
870 9 int ret = scale_internal(c->cascaded_context[0],
871 srcSlice, srcStride, srcSliceY, srcSliceH,
872 9 c->cascaded_tmp, c->cascaded_tmpStride,
873 9 0, c->cascaded_context[0]->dstH);
874
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 9 if (ret < 0)
875 ✗ return ret;
876 9 ret = scale_internal(c->cascaded_context[1],
877 9 (const uint8_t * const * )c->cascaded_tmp, c->cascaded_tmpStride,
878 9 0, c->cascaded_context[0]->dstH,
879 dstSlice, dstStride, dstSliceY, dstSliceH);
880 9 return ret;
881 }
882
883 125196 static int scale_internal(SwsContext *c,
884 const uint8_t * const srcSlice[], const int srcStride[],
885 int srcSliceY, int srcSliceH,
886 uint8_t *const dstSlice[], const int dstStride[],
887 int dstSliceY, int dstSliceH)
888 {
889
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 125196 const int scale_dst = dstSliceY > 0 || dstSliceH < c->dstH;
890
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 125196 const int frame_start = scale_dst || !c->sliceDir;
891 int i, ret;
892 const uint8_t *src2[4];
893 uint8_t *dst2[4];
894
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 125196 int macro_height_src = isBayer(c->srcFormat) ? 2 : (1 << c->chrSrcVSubSample);
895
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 125196 int macro_height_dst = isBayer(c->dstFormat) ? 2 : (1 << c->chrDstVSubSample);
896 // copy strides, so they can safely be modified
897 int srcStride2[4];
898 int dstStride2[4];
899 125196 int srcSliceY_internal = srcSliceY;
900
901
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 125196 if (!srcStride || !dstStride || !dstSlice || !srcSlice) {
902 ✗ av_log(c, AV_LOG_ERROR, "One of the input parameters to sws_scale() is NULL, please check the calling code\n");
903 ✗ return AVERROR(EINVAL);
904 }
905
906
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 125196 if ((srcSliceY & (macro_height_src - 1)) ||
907
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 125196 ((srcSliceH & (macro_height_src - 1)) && srcSliceY + srcSliceH != c->srcH) ||
908
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 250392 srcSliceY + srcSliceH > c->srcH ||
909
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 125196 (isBayer(c->srcFormat) && srcSliceH <= 1)) {
910 ✗ av_log(c, AV_LOG_ERROR, "Slice parameters %d, %d are invalid\n", srcSliceY, srcSliceH);
911 ✗ return AVERROR(EINVAL);
912 }
913
914
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 125196 if ((dstSliceY & (macro_height_dst - 1)) ||
915
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 125196 ((dstSliceH & (macro_height_dst - 1)) && dstSliceY + dstSliceH != c->dstH) ||
916
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 125196 dstSliceY + dstSliceH > c->dstH) {
917 ✗ av_log(c, AV_LOG_ERROR, "Slice parameters %d, %d are invalid\n", dstSliceY, dstSliceH);
918 ✗ return AVERROR(EINVAL);
919 }
920
921
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 125196 if (!check_image_pointers(srcSlice, c->srcFormat, srcStride)) {
922 ✗ av_log(c, AV_LOG_ERROR, "bad src image pointers\n");
923 ✗ return AVERROR(EINVAL);
924 }
925
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 125196 if (!check_image_pointers((const uint8_t* const*)dstSlice, c->dstFormat, dstStride)) {
926 ✗ av_log(c, AV_LOG_ERROR, "bad dst image pointers\n");
927 ✗ return AVERROR(EINVAL);
928 }
929
930 // do not mess up sliceDir if we have a "trailing" 0-size slice
931
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 125196 if (srcSliceH == 0)
932 ✗ return 0;
933
934
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 125196 if (c->gamma_flag && c->cascaded_context[0])
935 ✗ return scale_gamma(c, srcSlice, srcStride, srcSliceY, srcSliceH,
936 dstSlice, dstStride, dstSliceY, dstSliceH);
937
938
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 125196 if (c->cascaded_context[0] && srcSliceY == 0 && srcSliceH == c->cascaded_context[0]->srcH)
939 9 return scale_cascaded(c, srcSlice, srcStride, srcSliceY, srcSliceH,
940 dstSlice, dstStride, dstSliceY, dstSliceH);
941
942
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 125187 if (!srcSliceY && (c->flags & SWS_BITEXACT) && c->dither == SWS_DITHER_ED && c->dither_error[0])
943
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 4350 for (i = 0; i < 4; i++)
944 3480 memset(c->dither_error[i], 0, sizeof(c->dither_error[0][0]) * (c->dstW+2));
945
946
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 125187 if (usePal(c->srcFormat))
947 33301 update_palette(c, (const uint32_t *)srcSlice[1]);
948
949 125187 memcpy(src2, srcSlice, sizeof(src2));
950 125187 memcpy(dst2, dstSlice, sizeof(dst2));
951 125187 memcpy(srcStride2, srcStride, sizeof(srcStride2));
952 125187 memcpy(dstStride2, dstStride, sizeof(dstStride2));
953
954
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 125187 if (frame_start && !scale_dst) {
955
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 32320 if (srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
956 ✗ av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");
957 ✗ return AVERROR(EINVAL);
958 }
959
960
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 32320 c->sliceDir = (srcSliceY == 0) ? 1 : -1;
961
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 92867 } else if (scale_dst)
962 92811 c->sliceDir = 1;
963
964
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 125187 if (c->src0Alpha && !c->dst0Alpha && isALPHA(c->dstFormat)) {
965 uint8_t *base;
966 int x,y;
967
968 54 av_fast_malloc(&c->rgb0_scratch, &c->rgb0_scratch_allocated,
969 54 FFABS(srcStride[0]) * srcSliceH + 32);
970
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 54 if (!c->rgb0_scratch)
971 ✗ return AVERROR(ENOMEM);
972
973
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 54 base = srcStride[0] < 0 ? c->rgb0_scratch - srcStride[0] * (srcSliceH-1) :
974 c->rgb0_scratch;
975
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 42012 for (y=0; y<srcSliceH; y++){
976 41958 memcpy(base + srcStride[0]*y, src2[0] + srcStride[0]*y, 4*c->srcW);
977
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 25864776 for (x=c->src0Alpha-1; x<4*c->srcW; x+=4) {
978 25822818 base[ srcStride[0]*y + x] = 0xFF;
979 }
980 }
981 54 src2[0] = base;
982 }
983
984
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 125187 if (c->srcXYZ && !(c->dstXYZ && c->srcW==c->dstW && c->srcH==c->dstH)) {
985 uint8_t *base;
986
987 3 av_fast_malloc(&c->xyz_scratch, &c->xyz_scratch_allocated,
988 3 FFABS(srcStride[0]) * srcSliceH + 32);
989
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 3 if (!c->xyz_scratch)
990 ✗ return AVERROR(ENOMEM);
991
992
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 3 base = srcStride[0] < 0 ? c->xyz_scratch - srcStride[0] * (srcSliceH-1) :
993 c->xyz_scratch;
994
995 3 xyz12Torgb48(c, (uint16_t*)base, (const uint16_t*)src2[0], srcStride[0]/2, srcSliceH);
996 3 src2[0] = base;
997 }
998
999
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 125187 if (c->sliceDir != 1) {
1000 // slices go from bottom to top => we flip the image internally
1001 ✗ for (i=0; i<4; i++) {
1002 ✗ srcStride2[i] *= -1;
1003 ✗ dstStride2[i] *= -1;
1004 }
1005
1006 ✗ src2[0] += (srcSliceH - 1) * srcStride[0];
1007 ✗ if (!usePal(c->srcFormat))
1008 ✗ src2[1] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[1];
1009 ✗ src2[2] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[2];
1010 ✗ src2[3] += (srcSliceH - 1) * srcStride[3];
1011 ✗ dst2[0] += ( c->dstH - 1) * dstStride[0];
1012 ✗ dst2[1] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[1];
1013 ✗ dst2[2] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[2];
1014 ✗ dst2[3] += ( c->dstH - 1) * dstStride[3];
1015
1016 ✗ srcSliceY_internal = c->srcH-srcSliceY-srcSliceH;
1017 }
1018 125187 reset_ptr(src2, c->srcFormat);
1019 125187 reset_ptr((void*)dst2, c->dstFormat);
1020
1021
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 125187 if (c->convert_unscaled) {
1022 56718 int offset = srcSliceY_internal;
1023 56718 int slice_h = srcSliceH;
1024
1025 // for dst slice scaling, offset the pointers to match the unscaled API
1026
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 56718 if (scale_dst) {
1027
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 55741 av_assert0(offset == 0);
1028
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 118496 for (i = 0; i < 4 && src2[i]; i++) {
1029
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 95100 if (!src2[i] || (i > 0 && usePal(c->srcFormat)))
1030 break;
1031
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 62755 src2[i] += (dstSliceY >> ((i == 1 || i == 2) ? c->chrSrcVSubSample : 0)) * srcStride2[i];
1032 }
1033
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 118565 for (i = 0; i < 4 && dst2[i]; i++) {
1035
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 62824 if (!dst2[i] || (i > 0 && usePal(c->dstFormat)))
1036 break;
1037
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 62824 dst2[i] -= (dstSliceY >> ((i == 1 || i == 2) ? c->chrDstVSubSample : 0)) * dstStride2[i];
1038 }
1039 55741 offset = dstSliceY;
1040 55741 slice_h = dstSliceH;
1041 }
1042
1043 56718 ret = c->convert_unscaled(c, src2, srcStride2, offset, slice_h,
1044 dst2, dstStride2);
1045
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 56718 if (scale_dst)
1046 55741 dst2[0] += dstSliceY * dstStride2[0];
1047 } else {
1048 68469 ret = swscale(c, src2, srcStride2, srcSliceY_internal, srcSliceH,
1049 dst2, dstStride2, dstSliceY, dstSliceH);
1050 }
1051
1052
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 125187 if (c->dstXYZ && !(c->srcXYZ && c->srcW==c->dstW && c->srcH==c->dstH)) {
1053 uint16_t *dst16;
1054
1055
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 34 if (scale_dst) {
1056 ✗ dst16 = (uint16_t *)dst2[0];
1057 } else {
1058
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 34 int dstY = c->dstY ? c->dstY : srcSliceY + srcSliceH;
1059
1060
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 34 av_assert0(dstY >= ret);
1061
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 34 av_assert0(ret >= 0);
1062
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 34 av_assert0(c->dstH >= dstY);
1063 34 dst16 = (uint16_t*)(dst2[0] + (dstY - ret) * dstStride2[0]);
1064 }
1065
1066 /* replace on the same data */
1067 34 rgb48Toxyz12(c, dst16, dst16, dstStride2[0]/2, ret);
1068 }
1069
1070 /* reset slice direction at end of frame */
1071
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 125187 if ((srcSliceY_internal + srcSliceH == c->srcH) || scale_dst)
1072 125131 c->sliceDir = 0;
1073
1074 125187 return ret;
1075 }
1076
1077 42592 void sws_frame_end(struct SwsContext *c)
1078 {
1079 42592 av_frame_unref(c->frame_src);
1080 42592 av_frame_unref(c->frame_dst);
1081 42592 c->src_ranges.nb_ranges = 0;
1082 42592 }
1083
1084 42592 int sws_frame_start(struct SwsContext *c, AVFrame *dst, const AVFrame *src)
1085 {
1086 42592 int ret, allocated = 0;
1087
1088 42592 ret = av_frame_ref(c->frame_src, src);
1089
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 42592 if (ret < 0)
1090 ✗ return ret;
1091
1092
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 42592 if (!dst->buf[0]) {
1093 ✗ dst->width = c->dstW;
1094 ✗ dst->height = c->dstH;
1095 ✗ dst->format = c->dstFormat;
1096
1097 ✗ ret = av_frame_get_buffer(dst, 0);
1098 ✗ if (ret < 0)
1099 ✗ return ret;
1100 ✗ allocated = 1;
1101 }
1102
1103 42592 ret = av_frame_ref(c->frame_dst, dst);
1104
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 42592 if (ret < 0) {
1105 ✗ if (allocated)
1106 ✗ av_frame_unref(dst);
1107
1108 ✗ return ret;
1109 }
1110
1111 42592 return 0;
1112 }
1113
1114 42592 int sws_send_slice(struct SwsContext *c, unsigned int slice_start,
1115 unsigned int slice_height)
1116 {
1117 int ret;
1118
1119 42592 ret = ff_range_add(&c->src_ranges, slice_start, slice_height);
1120
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 42592 if (ret < 0)
1121 ✗ return ret;
1122
1123 42592 return 0;
1124 }
1125
1126 42592 unsigned int sws_receive_slice_alignment(const struct SwsContext *c)
1127 {
1128
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 42592 if (c->slice_ctx)
1129 11228 return c->slice_ctx[0]->dst_slice_align;
1130
1131 31364 return c->dst_slice_align;
1132 }
1133
1134 42592 int sws_receive_slice(struct SwsContext *c, unsigned int slice_start,
1135 unsigned int slice_height)
1136 {
1137 42592 unsigned int align = sws_receive_slice_alignment(c);
1138 uint8_t *dst[4];
1139
1140 /* wait until complete input has been received */
1141
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 42592 if (!(c->src_ranges.nb_ranges == 1 &&
1142
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 42592 c->src_ranges.ranges[0].start == 0 &&
1143
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 42592 c->src_ranges.ranges[0].len == c->srcH))
1144 ✗ return AVERROR(EAGAIN);
1145
1146
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 42592 if ((slice_start > 0 || slice_height < c->dstH) &&
1147 ✗ (slice_start % align || slice_height % align)) {
1148 ✗ av_log(c, AV_LOG_ERROR,
1149 "Incorrectly aligned output: %u/%u not multiples of %u\n",
1150 slice_start, slice_height, align);
1151 ✗ return AVERROR(EINVAL);
1152 }
1153
1154
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 42592 if (c->slicethread) {
1155
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 11228 int nb_jobs = c->slice_ctx[0]->dither == SWS_DITHER_ED ? 1 : c->nb_slice_ctx;
1156 11228 int ret = 0;
1157
1158 11228 c->dst_slice_start = slice_start;
1159 11228 c->dst_slice_height = slice_height;
1160
1161 11228 avpriv_slicethread_execute(c->slicethread, nb_jobs, 0);
1162
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 105285 for (int i = 0; i < c->nb_slice_ctx; i++) {
1164
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 94057 if (c->slice_err[i] < 0) {
1165 ✗ ret = c->slice_err[i];
1166 ✗ break;
1167 }
1168 }
1169
1170 11228 memset(c->slice_err, 0, c->nb_slice_ctx * sizeof(*c->slice_err));
1171
1172 11228 return ret;
1173 }
1174
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 156820 for (int i = 0; i < FF_ARRAY_ELEMS(dst); i++) {
1176 125456 ptrdiff_t offset = c->frame_dst->linesize[i] * (slice_start >> c->chrDstVSubSample);
1177
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 125456 dst[i] = FF_PTR_ADD(c->frame_dst->data[i], offset);
1178 }
1179
1180 31364 return scale_internal(c, (const uint8_t * const *)c->frame_src->data,
1181 31364 c->frame_src->linesize, 0, c->srcH,
1182 31364 dst, c->frame_dst->linesize, slice_start, slice_height);
1183 }
1184
1185 42592 int sws_scale_frame(struct SwsContext *c, AVFrame *dst, const AVFrame *src)
1186 {
1187 int ret;
1188
1189 42592 ret = sws_frame_start(c, dst, src);
1190
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 42592 if (ret < 0)
1191 ✗ return ret;
1192
1193 42592 ret = sws_send_slice(c, 0, src->height);
1194
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 42592 if (ret >= 0)
1195 42592 ret = sws_receive_slice(c, 0, dst->height);
1196
1197 42592 sws_frame_end(c);
1198
1199 42592 return ret;
1200 }
1201
1202 /**
1203 * swscale wrapper, so we don't need to export the SwsContext.
1204 * Assumes planar YUV to be in YUV order instead of YVU.
1205 */
1206 138 int attribute_align_arg sws_scale(struct SwsContext *c,
1207 const uint8_t * const srcSlice[],
1208 const int srcStride[], int srcSliceY,
1209 int srcSliceH, uint8_t *const dst[],
1210 const int dstStride[])
1211 {
1212
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 138 if (c->nb_slice_ctx)
1213 ✗ c = c->slice_ctx[0];
1214
1215 138 return scale_internal(c, srcSlice, srcStride, srcSliceY, srcSliceH,
1216 dst, dstStride, 0, c->dstH);
1217 }
1218
1219 94057 void ff_sws_slice_worker(void *priv, int jobnr, int threadnr,
1220 int nb_jobs, int nb_threads)
1221 {
1222 94057 SwsContext *parent = priv;
1223 94057 SwsContext *c = parent->slice_ctx[threadnr];
1224
1225 94057 const int slice_height = FFALIGN(FFMAX((parent->dst_slice_height + nb_jobs - 1) / nb_jobs, 1),
1226 c->dst_slice_align);
1227 94057 const int slice_start = jobnr * slice_height;
1228 94057 const int slice_end = FFMIN((jobnr + 1) * slice_height, parent->dst_slice_height);
1229 94057 int err = 0;
1230
1231
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 94057 if (slice_end > slice_start) {
1232 93676 uint8_t *dst[4] = { NULL };
1233
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 255237 for (int i = 0; i < FF_ARRAY_ELEMS(dst) && parent->frame_dst->data[i]; i++) {
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 161561 const int vshift = (i == 1 || i == 2) ? c->chrDstVSubSample : 0;
1236 161561 const ptrdiff_t offset = parent->frame_dst->linesize[i] *
1237 161561 ((slice_start + parent->dst_slice_start) >> vshift);
1238
1239 161561 dst[i] = parent->frame_dst->data[i] + offset;
1240 }
1241
1242 93676 err = scale_internal(c, (const uint8_t * const *)parent->frame_src->data,
1243 93676 parent->frame_src->linesize, 0, c->srcH,
1244 93676 dst, parent->frame_dst->linesize,
1245 93676 parent->dst_slice_start + slice_start, slice_end - slice_start);
1246 }
1247
1248 94057 parent->slice_err[threadnr] = err;
1249 94057 }
1250