2 * Copyright (C) 2001-2011 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27 #include "swscale_internal.h"
29 #include "libavutil/intreadwrite.h"
30 #include "libavutil/cpu.h"
31 #include "libavutil/avutil.h"
32 #include "libavutil/mathematics.h"
33 #include "libavutil/bswap.h"
34 #include "libavutil/pixdesc.h"
35 #include "libavutil/avassert.h"
37 #define RGB2YUV_SHIFT 15
38 #define BY ( (int) (0.114 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
39 #define BV (-(int) (0.081 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
40 #define BU ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
41 #define GY ( (int) (0.587 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
42 #define GV (-(int) (0.419 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
43 #define GU (-(int) (0.331 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
44 #define RY ( (int) (0.299 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
45 #define RV ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
46 #define RU (-(int) (0.169 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
48 DECLARE_ALIGNED(8, const uint8_t, dithers)[8][8][8]={
50 { 0, 1, 0, 1, 0, 1, 0, 1,},
51 { 1, 0, 1, 0, 1, 0, 1, 0,},
52 { 0, 1, 0, 1, 0, 1, 0, 1,},
53 { 1, 0, 1, 0, 1, 0, 1, 0,},
54 { 0, 1, 0, 1, 0, 1, 0, 1,},
55 { 1, 0, 1, 0, 1, 0, 1, 0,},
56 { 0, 1, 0, 1, 0, 1, 0, 1,},
57 { 1, 0, 1, 0, 1, 0, 1, 0,},
59 { 1, 2, 1, 2, 1, 2, 1, 2,},
60 { 3, 0, 3, 0, 3, 0, 3, 0,},
61 { 1, 2, 1, 2, 1, 2, 1, 2,},
62 { 3, 0, 3, 0, 3, 0, 3, 0,},
63 { 1, 2, 1, 2, 1, 2, 1, 2,},
64 { 3, 0, 3, 0, 3, 0, 3, 0,},
65 { 1, 2, 1, 2, 1, 2, 1, 2,},
66 { 3, 0, 3, 0, 3, 0, 3, 0,},
68 { 2, 4, 3, 5, 2, 4, 3, 5,},
69 { 6, 0, 7, 1, 6, 0, 7, 1,},
70 { 3, 5, 2, 4, 3, 5, 2, 4,},
71 { 7, 1, 6, 0, 7, 1, 6, 0,},
72 { 2, 4, 3, 5, 2, 4, 3, 5,},
73 { 6, 0, 7, 1, 6, 0, 7, 1,},
74 { 3, 5, 2, 4, 3, 5, 2, 4,},
75 { 7, 1, 6, 0, 7, 1, 6, 0,},
77 { 4, 8, 7, 11, 4, 8, 7, 11,},
78 { 12, 0, 15, 3, 12, 0, 15, 3,},
79 { 6, 10, 5, 9, 6, 10, 5, 9,},
80 { 14, 2, 13, 1, 14, 2, 13, 1,},
81 { 4, 8, 7, 11, 4, 8, 7, 11,},
82 { 12, 0, 15, 3, 12, 0, 15, 3,},
83 { 6, 10, 5, 9, 6, 10, 5, 9,},
84 { 14, 2, 13, 1, 14, 2, 13, 1,},
86 { 9, 17, 15, 23, 8, 16, 14, 22,},
87 { 25, 1, 31, 7, 24, 0, 30, 6,},
88 { 13, 21, 11, 19, 12, 20, 10, 18,},
89 { 29, 5, 27, 3, 28, 4, 26, 2,},
90 { 8, 16, 14, 22, 9, 17, 15, 23,},
91 { 24, 0, 30, 6, 25, 1, 31, 7,},
92 { 12, 20, 10, 18, 13, 21, 11, 19,},
93 { 28, 4, 26, 2, 29, 5, 27, 3,},
95 { 18, 34, 30, 46, 17, 33, 29, 45,},
96 { 50, 2, 62, 14, 49, 1, 61, 13,},
97 { 26, 42, 22, 38, 25, 41, 21, 37,},
98 { 58, 10, 54, 6, 57, 9, 53, 5,},
99 { 16, 32, 28, 44, 19, 35, 31, 47,},
100 { 48, 0, 60, 12, 51, 3, 63, 15,},
101 { 24, 40, 20, 36, 27, 43, 23, 39,},
102 { 56, 8, 52, 4, 59, 11, 55, 7,},
104 { 18, 34, 30, 46, 17, 33, 29, 45,},
105 { 50, 2, 62, 14, 49, 1, 61, 13,},
106 { 26, 42, 22, 38, 25, 41, 21, 37,},
107 { 58, 10, 54, 6, 57, 9, 53, 5,},
108 { 16, 32, 28, 44, 19, 35, 31, 47,},
109 { 48, 0, 60, 12, 51, 3, 63, 15,},
110 { 24, 40, 20, 36, 27, 43, 23, 39,},
111 { 56, 8, 52, 4, 59, 11, 55, 7,},
113 { 36, 68, 60, 92, 34, 66, 58, 90,},
114 { 100, 4,124, 28, 98, 2,122, 26,},
115 { 52, 84, 44, 76, 50, 82, 42, 74,},
116 { 116, 20,108, 12,114, 18,106, 10,},
117 { 32, 64, 56, 88, 38, 70, 62, 94,},
118 { 96, 0,120, 24,102, 6,126, 30,},
119 { 48, 80, 40, 72, 54, 86, 46, 78,},
120 { 112, 16,104, 8,118, 22,110, 14,},
123 static const uint8_t flat64[8]={64,64,64,64,64,64,64,64};
125 const uint16_t dither_scale[15][16]={
126 { 2, 3, 3, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,},
127 { 2, 3, 7, 7, 13, 13, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,},
128 { 3, 3, 4, 15, 15, 29, 57, 57, 57, 113, 113, 113, 113, 113, 113, 113,},
129 { 3, 4, 4, 5, 31, 31, 61, 121, 241, 241, 241, 241, 481, 481, 481, 481,},
130 { 3, 4, 5, 5, 6, 63, 63, 125, 249, 497, 993, 993, 993, 993, 993, 1985,},
131 { 3, 5, 6, 6, 6, 7, 127, 127, 253, 505, 1009, 2017, 4033, 4033, 4033, 4033,},
132 { 3, 5, 6, 7, 7, 7, 8, 255, 255, 509, 1017, 2033, 4065, 8129,16257,16257,},
133 { 3, 5, 6, 8, 8, 8, 8, 9, 511, 511, 1021, 2041, 4081, 8161,16321,32641,},
134 { 3, 5, 7, 8, 9, 9, 9, 9, 10, 1023, 1023, 2045, 4089, 8177,16353,32705,},
135 { 3, 5, 7, 8, 10, 10, 10, 10, 10, 11, 2047, 2047, 4093, 8185,16369,32737,},
136 { 3, 5, 7, 8, 10, 11, 11, 11, 11, 11, 12, 4095, 4095, 8189,16377,32753,},
137 { 3, 5, 7, 9, 10, 12, 12, 12, 12, 12, 12, 13, 8191, 8191,16381,32761,},
138 { 3, 5, 7, 9, 10, 12, 13, 13, 13, 13, 13, 13, 14,16383,16383,32765,},
139 { 3, 5, 7, 9, 10, 12, 14, 14, 14, 14, 14, 14, 14, 15,32767,32767,},
140 { 3, 5, 7, 9, 11, 12, 14, 15, 15, 15, 15, 15, 15, 15, 16,65535,},
144 static void fillPlane(uint8_t *plane, int stride, int width, int height, int y,
148 uint8_t *ptr = plane + stride * y;
149 for (i = 0; i < height; i++) {
150 memset(ptr, val, width);
155 static void fillPlane16(uint8_t *plane, int stride, int width, int height, int y,
159 uint8_t *ptr = plane + stride * y;
160 int v = alpha ? -1 : (1<<bits);
161 for (i = 0; i < height; i++) {
162 for (j = 0; j < width; j++) {
169 static void copyPlane(const uint8_t *src, int srcStride,
170 int srcSliceY, int srcSliceH, int width,
171 uint8_t *dst, int dstStride)
173 dst += dstStride * srcSliceY;
174 if (dstStride == srcStride && srcStride > 0) {
175 memcpy(dst, src, srcSliceH * dstStride);
178 for (i = 0; i < srcSliceH; i++) {
179 memcpy(dst, src, width);
186 static int planarToNv12Wrapper(SwsContext *c, const uint8_t *src[],
187 int srcStride[], int srcSliceY,
188 int srcSliceH, uint8_t *dstParam[],
191 uint8_t *dst = dstParam[1] + dstStride[1] * srcSliceY / 2;
193 copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,
194 dstParam[0], dstStride[0]);
196 if (c->dstFormat == PIX_FMT_NV12)
197 interleaveBytes(src[1], src[2], dst, c->srcW / 2, srcSliceH / 2,
198 srcStride[1], srcStride[2], dstStride[0]);
200 interleaveBytes(src[2], src[1], dst, c->srcW / 2, srcSliceH / 2,
201 srcStride[2], srcStride[1], dstStride[0]);
206 static int planarToYuy2Wrapper(SwsContext *c, const uint8_t *src[],
207 int srcStride[], int srcSliceY, int srcSliceH,
208 uint8_t *dstParam[], int dstStride[])
210 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
212 yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
213 srcStride[1], dstStride[0]);
218 static int planarToUyvyWrapper(SwsContext *c, const uint8_t *src[],
219 int srcStride[], int srcSliceY, int srcSliceH,
220 uint8_t *dstParam[], int dstStride[])
222 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
224 yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
225 srcStride[1], dstStride[0]);
230 static int yuv422pToYuy2Wrapper(SwsContext *c, const uint8_t *src[],
231 int srcStride[], int srcSliceY, int srcSliceH,
232 uint8_t *dstParam[], int dstStride[])
234 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
236 yuv422ptoyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
237 srcStride[1], dstStride[0]);
242 static int yuv422pToUyvyWrapper(SwsContext *c, const uint8_t *src[],
243 int srcStride[], int srcSliceY, int srcSliceH,
244 uint8_t *dstParam[], int dstStride[])
246 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
248 yuv422ptouyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
249 srcStride[1], dstStride[0]);
254 static int yuyvToYuv420Wrapper(SwsContext *c, const uint8_t *src[],
255 int srcStride[], int srcSliceY, int srcSliceH,
256 uint8_t *dstParam[], int dstStride[])
258 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
259 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY / 2;
260 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY / 2;
262 yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
263 dstStride[1], srcStride[0]);
266 fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
271 static int yuyvToYuv422Wrapper(SwsContext *c, const uint8_t *src[],
272 int srcStride[], int srcSliceY, int srcSliceH,
273 uint8_t *dstParam[], int dstStride[])
275 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
276 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY;
277 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY;
279 yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
280 dstStride[1], srcStride[0]);
285 static int uyvyToYuv420Wrapper(SwsContext *c, const uint8_t *src[],
286 int srcStride[], int srcSliceY, int srcSliceH,
287 uint8_t *dstParam[], int dstStride[])
289 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
290 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY / 2;
291 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY / 2;
293 uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
294 dstStride[1], srcStride[0]);
297 fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
302 static int uyvyToYuv422Wrapper(SwsContext *c, const uint8_t *src[],
303 int srcStride[], int srcSliceY, int srcSliceH,
304 uint8_t *dstParam[], int dstStride[])
306 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
307 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY;
308 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY;
310 uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
311 dstStride[1], srcStride[0]);
316 static void gray8aToPacked32(const uint8_t *src, uint8_t *dst, int num_pixels,
317 const uint8_t *palette)
320 for (i = 0; i < num_pixels; i++)
321 ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i << 1]] | (src[(i << 1) + 1] << 24);
324 static void gray8aToPacked32_1(const uint8_t *src, uint8_t *dst, int num_pixels,
325 const uint8_t *palette)
329 for (i = 0; i < num_pixels; i++)
330 ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i << 1]] | src[(i << 1) + 1];
333 static void gray8aToPacked24(const uint8_t *src, uint8_t *dst, int num_pixels,
334 const uint8_t *palette)
338 for (i = 0; i < num_pixels; i++) {
340 dst[0] = palette[src[i << 1] * 4 + 0];
341 dst[1] = palette[src[i << 1] * 4 + 1];
342 dst[2] = palette[src[i << 1] * 4 + 2];
347 static int packed_16bpc_bswap(SwsContext *c, const uint8_t *src[],
348 int srcStride[], int srcSliceY, int srcSliceH,
349 uint8_t *dst[], int dstStride[])
352 int srcstr = srcStride[0] >> 1;
353 int dststr = dstStride[0] >> 1;
354 uint16_t *dstPtr = (uint16_t *) dst[0];
355 const uint16_t *srcPtr = (const uint16_t *) src[0];
356 int min_stride = FFMIN(srcstr, dststr);
358 for (i = 0; i < srcSliceH; i++) {
359 for (j = 0; j < min_stride; j++) {
360 dstPtr[j] = av_bswap16(srcPtr[j]);
369 static int palToRgbWrapper(SwsContext *c, const uint8_t *src[], int srcStride[],
370 int srcSliceY, int srcSliceH, uint8_t *dst[],
373 const enum PixelFormat srcFormat = c->srcFormat;
374 const enum PixelFormat dstFormat = c->dstFormat;
375 void (*conv)(const uint8_t *src, uint8_t *dst, int num_pixels,
376 const uint8_t *palette) = NULL;
378 uint8_t *dstPtr = dst[0] + dstStride[0] * srcSliceY;
379 const uint8_t *srcPtr = src[0];
381 if (srcFormat == PIX_FMT_GRAY8A) {
383 case PIX_FMT_RGB32 : conv = gray8aToPacked32; break;
384 case PIX_FMT_BGR32 : conv = gray8aToPacked32; break;
385 case PIX_FMT_BGR32_1: conv = gray8aToPacked32_1; break;
386 case PIX_FMT_RGB32_1: conv = gray8aToPacked32_1; break;
387 case PIX_FMT_RGB24 : conv = gray8aToPacked24; break;
388 case PIX_FMT_BGR24 : conv = gray8aToPacked24; break;
390 } else if (usePal(srcFormat)) {
392 case PIX_FMT_RGB32 : conv = sws_convertPalette8ToPacked32; break;
393 case PIX_FMT_BGR32 : conv = sws_convertPalette8ToPacked32; break;
394 case PIX_FMT_BGR32_1: conv = sws_convertPalette8ToPacked32; break;
395 case PIX_FMT_RGB32_1: conv = sws_convertPalette8ToPacked32; break;
396 case PIX_FMT_RGB24 : conv = sws_convertPalette8ToPacked24; break;
397 case PIX_FMT_BGR24 : conv = sws_convertPalette8ToPacked24; break;
402 av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
403 av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat));
405 for (i = 0; i < srcSliceH; i++) {
406 conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);
407 srcPtr += srcStride[0];
408 dstPtr += dstStride[0];
415 static void gbr24ptopacked24(const uint8_t *src[], int srcStride[],
416 uint8_t *dst, int dstStride, int srcSliceH,
420 for (h = 0; h < srcSliceH; h++) {
421 uint8_t *dest = dst + dstStride * h;
422 for (x = 0; x < width; x++) {
428 for (i = 0; i < 3; i++)
429 src[i] += srcStride[i];
433 static void gbr24ptopacked32(const uint8_t *src[], int srcStride[],
434 uint8_t *dst, int dstStride, int srcSliceH,
435 int alpha_first, int width)
438 for (h = 0; h < srcSliceH; h++) {
439 uint8_t *dest = dst + dstStride * h;
442 for (x = 0; x < width; x++) {
449 for (x = 0; x < width; x++) {
457 for (i = 0; i < 3; i++)
458 src[i] += srcStride[i];
462 static int planarRgbToRgbWrapper(SwsContext *c, const uint8_t *src[],
463 int srcStride[], int srcSliceY, int srcSliceH,
464 uint8_t *dst[], int dstStride[])
467 if (c->srcFormat != PIX_FMT_GBRP) {
468 av_log(c, AV_LOG_ERROR, "unsupported planar RGB conversion %s -> %s\n",
469 av_get_pix_fmt_name(c->srcFormat),
470 av_get_pix_fmt_name(c->dstFormat));
474 switch (c->dstFormat) {
476 gbr24ptopacked24((const uint8_t *[]) { src[1], src[0], src[2] },
477 (int []) { srcStride[1], srcStride[0], srcStride[2] },
478 dst[0] + srcSliceY * dstStride[0], dstStride[0],
483 gbr24ptopacked24((const uint8_t *[]) { src[2], src[0], src[1] },
484 (int []) { srcStride[2], srcStride[0], srcStride[1] },
485 dst[0] + srcSliceY * dstStride[0], dstStride[0],
492 gbr24ptopacked32((const uint8_t *[]) { src[2], src[0], src[1] },
493 (int []) { srcStride[2], srcStride[0], srcStride[1] },
494 dst[0] + srcSliceY * dstStride[0], dstStride[0],
495 srcSliceH, alpha_first, c->srcW);
501 gbr24ptopacked32((const uint8_t *[]) { src[1], src[0], src[2] },
502 (int []) { srcStride[1], srcStride[0], srcStride[2] },
503 dst[0] + srcSliceY * dstStride[0], dstStride[0],
504 srcSliceH, alpha_first, c->srcW);
508 av_log(c, AV_LOG_ERROR,
509 "unsupported planar RGB conversion %s -> %s\n",
510 av_get_pix_fmt_name(c->srcFormat),
511 av_get_pix_fmt_name(c->dstFormat));
517 #define isRGBA32(x) ( \
518 (x) == PIX_FMT_ARGB \
519 || (x) == PIX_FMT_RGBA \
520 || (x) == PIX_FMT_BGRA \
521 || (x) == PIX_FMT_ABGR \
524 #define isRGBA64(x) ( \
525 (x) == PIX_FMT_RGBA64LE \
526 || (x) == PIX_FMT_RGBA64BE \
527 || (x) == PIX_FMT_BGRA64LE \
528 || (x) == PIX_FMT_BGRA64BE \
531 #define isRGB48(x) ( \
532 (x) == PIX_FMT_RGB48LE \
533 || (x) == PIX_FMT_RGB48BE \
534 || (x) == PIX_FMT_BGR48LE \
535 || (x) == PIX_FMT_BGR48BE \
538 /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */
539 typedef void (* rgbConvFn) (const uint8_t *, uint8_t *, int);
540 static rgbConvFn findRgbConvFn(SwsContext *c)
542 const enum PixelFormat srcFormat = c->srcFormat;
543 const enum PixelFormat dstFormat = c->dstFormat;
544 const int srcId = c->srcFormatBpp;
545 const int dstId = c->dstFormatBpp;
546 rgbConvFn conv = NULL;
548 #define IS_NOT_NE(bpp, fmt) \
549 (((bpp + 7) >> 3) == 2 && \
550 (!(av_pix_fmt_descriptors[fmt].flags & PIX_FMT_BE) != !HAVE_BIGENDIAN))
552 #define CONV_IS(src, dst) (srcFormat == PIX_FMT_##src && dstFormat == PIX_FMT_##dst)
554 if (isRGBA32(srcFormat) && isRGBA32(dstFormat)) {
555 if ( CONV_IS(ABGR, RGBA)
556 || CONV_IS(ARGB, BGRA)
557 || CONV_IS(BGRA, ARGB)
558 || CONV_IS(RGBA, ABGR)) conv = shuffle_bytes_3210;
559 else if (CONV_IS(ABGR, ARGB)
560 || CONV_IS(ARGB, ABGR)) conv = shuffle_bytes_0321;
561 else if (CONV_IS(ABGR, BGRA)
562 || CONV_IS(ARGB, RGBA)) conv = shuffle_bytes_1230;
563 else if (CONV_IS(BGRA, RGBA)
564 || CONV_IS(RGBA, BGRA)) conv = shuffle_bytes_2103;
565 else if (CONV_IS(BGRA, ABGR)
566 || CONV_IS(RGBA, ARGB)) conv = shuffle_bytes_3012;
567 } else if (isRGB48(srcFormat) && isRGB48(dstFormat)) {
568 if (CONV_IS(RGB48LE, BGR48LE)
569 || CONV_IS(BGR48LE, RGB48LE)
570 || CONV_IS(RGB48BE, BGR48BE)
571 || CONV_IS(BGR48BE, RGB48BE)) conv = rgb48tobgr48_nobswap;
572 else if (CONV_IS(RGB48LE, BGR48BE)
573 || CONV_IS(BGR48LE, RGB48BE)
574 || CONV_IS(RGB48BE, BGR48LE)
575 || CONV_IS(BGR48BE, RGB48LE)) conv = rgb48tobgr48_bswap;
576 } else if (isRGBA64(srcFormat) && isRGB48(dstFormat)) {
577 if (CONV_IS(RGBA64LE, BGR48LE)
578 || CONV_IS(BGRA64LE, RGB48LE)
579 || CONV_IS(RGBA64BE, BGR48BE)
580 || CONV_IS(BGRA64BE, RGB48BE)) conv = rgb64tobgr48_nobswap;
581 else if (CONV_IS(RGBA64LE, BGR48BE)
582 || CONV_IS(BGRA64LE, RGB48BE)
583 || CONV_IS(RGBA64BE, BGR48LE)
584 || CONV_IS(BGRA64BE, RGB48LE)) conv = rgb64tobgr48_bswap;
585 else if (CONV_IS(RGBA64LE, RGB48LE)
586 || CONV_IS(BGRA64LE, BGR48LE)
587 || CONV_IS(RGBA64BE, RGB48BE)
588 || CONV_IS(BGRA64BE, BGR48BE)) conv = rgb64to48_nobswap;
589 else if (CONV_IS(RGBA64LE, RGB48BE)
590 || CONV_IS(BGRA64LE, BGR48BE)
591 || CONV_IS(RGBA64BE, RGB48LE)
592 || CONV_IS(BGRA64BE, BGR48LE)) conv = rgb64to48_bswap;
595 if ((isBGRinInt(srcFormat) && isBGRinInt(dstFormat)) ||
596 (isRGBinInt(srcFormat) && isRGBinInt(dstFormat))) {
597 switch (srcId | (dstId << 16)) {
598 case 0x000F000C: conv = rgb12to15; break;
599 case 0x000F0010: conv = rgb16to15; break;
600 case 0x000F0018: conv = rgb24to15; break;
601 case 0x000F0020: conv = rgb32to15; break;
602 case 0x0010000F: conv = rgb15to16; break;
603 case 0x00100018: conv = rgb24to16; break;
604 case 0x00100020: conv = rgb32to16; break;
605 case 0x0018000F: conv = rgb15to24; break;
606 case 0x00180010: conv = rgb16to24; break;
607 case 0x00180020: conv = rgb32to24; break;
608 case 0x0020000F: conv = rgb15to32; break;
609 case 0x00200010: conv = rgb16to32; break;
610 case 0x00200018: conv = rgb24to32; break;
612 } else if ((isBGRinInt(srcFormat) && isRGBinInt(dstFormat)) ||
613 (isRGBinInt(srcFormat) && isBGRinInt(dstFormat))) {
614 switch (srcId | (dstId << 16)) {
615 case 0x000C000C: conv = rgb12tobgr12; break;
616 case 0x000F000F: conv = rgb15tobgr15; break;
617 case 0x000F0010: conv = rgb16tobgr15; break;
618 case 0x000F0018: conv = rgb24tobgr15; break;
619 case 0x000F0020: conv = rgb32tobgr15; break;
620 case 0x0010000F: conv = rgb15tobgr16; break;
621 case 0x00100010: conv = rgb16tobgr16; break;
622 case 0x00100018: conv = rgb24tobgr16; break;
623 case 0x00100020: conv = rgb32tobgr16; break;
624 case 0x0018000F: conv = rgb15tobgr24; break;
625 case 0x00180010: conv = rgb16tobgr24; break;
626 case 0x00180018: conv = rgb24tobgr24; break;
627 case 0x00180020: conv = rgb32tobgr24; break;
628 case 0x0020000F: conv = rgb15tobgr32; break;
629 case 0x00200010: conv = rgb16tobgr32; break;
630 case 0x00200018: conv = rgb24tobgr32; break;
637 /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */
638 static int rgbToRgbWrapper(SwsContext *c, const uint8_t *src[], int srcStride[],
639 int srcSliceY, int srcSliceH, uint8_t *dst[],
643 const enum PixelFormat srcFormat = c->srcFormat;
644 const enum PixelFormat dstFormat = c->dstFormat;
645 const int srcBpp = (c->srcFormatBpp + 7) >> 3;
646 const int dstBpp = (c->dstFormatBpp + 7) >> 3;
647 rgbConvFn conv = findRgbConvFn(c);
650 av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
651 av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat));
653 const uint8_t *srcPtr = src[0];
654 uint8_t *dstPtr = dst[0];
655 int src_bswap = IS_NOT_NE(c->srcFormatBpp, srcFormat);
656 int dst_bswap = IS_NOT_NE(c->dstFormatBpp, dstFormat);
658 if ((srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1) &&
659 !isRGBA32(dstFormat))
660 srcPtr += ALT32_CORR;
662 if ((dstFormat == PIX_FMT_RGB32_1 || dstFormat == PIX_FMT_BGR32_1) &&
663 !isRGBA32(srcFormat))
664 dstPtr += ALT32_CORR;
666 if (dstStride[0] * srcBpp == srcStride[0] * dstBpp && srcStride[0] > 0 &&
667 !(srcStride[0] % srcBpp) && !dst_bswap && !src_bswap)
668 conv(srcPtr, dstPtr + dstStride[0] * srcSliceY,
669 srcSliceH * srcStride[0]);
672 dstPtr += dstStride[0] * srcSliceY;
674 for (i = 0; i < srcSliceH; i++) {
676 for(j=0; j<c->srcW; j++)
677 ((uint16_t*)c->formatConvBuffer)[j] = av_bswap16(((uint16_t*)srcPtr)[j]);
678 conv(c->formatConvBuffer, dstPtr, c->srcW * srcBpp);
680 conv(srcPtr, dstPtr, c->srcW * srcBpp);
682 for(j=0; j<c->srcW; j++)
683 ((uint16_t*)dstPtr)[j] = av_bswap16(((uint16_t*)dstPtr)[j]);
684 srcPtr += srcStride[0];
685 dstPtr += dstStride[0];
692 static int bgr24ToYv12Wrapper(SwsContext *c, const uint8_t *src[],
693 int srcStride[], int srcSliceY, int srcSliceH,
694 uint8_t *dst[], int dstStride[])
698 dst[0] + srcSliceY * dstStride[0],
699 dst[1] + (srcSliceY >> 1) * dstStride[1],
700 dst[2] + (srcSliceY >> 1) * dstStride[2],
702 dstStride[0], dstStride[1], srcStride[0]);
704 fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
708 static int yvu9ToYv12Wrapper(SwsContext *c, const uint8_t *src[],
709 int srcStride[], int srcSliceY, int srcSliceH,
710 uint8_t *dst[], int dstStride[])
712 copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,
713 dst[0], dstStride[0]);
715 planar2x(src[1], dst[1] + dstStride[1] * (srcSliceY >> 1), c->chrSrcW,
716 srcSliceH >> 2, srcStride[1], dstStride[1]);
717 planar2x(src[2], dst[2] + dstStride[2] * (srcSliceY >> 1), c->chrSrcW,
718 srcSliceH >> 2, srcStride[2], dstStride[2]);
720 fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
724 /* unscaled copy like stuff (assumes nearly identical formats) */
725 static int packedCopyWrapper(SwsContext *c, const uint8_t *src[],
726 int srcStride[], int srcSliceY, int srcSliceH,
727 uint8_t *dst[], int dstStride[])
729 if (dstStride[0] == srcStride[0] && srcStride[0] > 0)
730 memcpy(dst[0] + dstStride[0] * srcSliceY, src[0], srcSliceH * dstStride[0]);
733 const uint8_t *srcPtr = src[0];
734 uint8_t *dstPtr = dst[0] + dstStride[0] * srcSliceY;
737 /* universal length finder */
738 while (length + c->srcW <= FFABS(dstStride[0]) &&
739 length + c->srcW <= FFABS(srcStride[0]))
741 av_assert1(length != 0);
743 for (i = 0; i < srcSliceH; i++) {
744 memcpy(dstPtr, srcPtr, length);
745 srcPtr += srcStride[0];
746 dstPtr += dstStride[0];
752 #define DITHER_COPY(dst, dstStride, src, srcStride, bswap, dbswap)\
753 uint16_t scale= dither_scale[dst_depth-1][src_depth-1];\
754 int shift= src_depth-dst_depth + dither_scale[src_depth-2][dst_depth-1];\
755 for (i = 0; i < height; i++) {\
756 const uint8_t *dither= dithers[src_depth-9][i&7];\
757 for (j = 0; j < length-7; j+=8){\
758 dst[j+0] = dbswap((bswap(src[j+0]) + dither[0])*scale>>shift);\
759 dst[j+1] = dbswap((bswap(src[j+1]) + dither[1])*scale>>shift);\
760 dst[j+2] = dbswap((bswap(src[j+2]) + dither[2])*scale>>shift);\
761 dst[j+3] = dbswap((bswap(src[j+3]) + dither[3])*scale>>shift);\
762 dst[j+4] = dbswap((bswap(src[j+4]) + dither[4])*scale>>shift);\
763 dst[j+5] = dbswap((bswap(src[j+5]) + dither[5])*scale>>shift);\
764 dst[j+6] = dbswap((bswap(src[j+6]) + dither[6])*scale>>shift);\
765 dst[j+7] = dbswap((bswap(src[j+7]) + dither[7])*scale>>shift);\
767 for (; j < length; j++)\
768 dst[j] = dbswap((bswap(src[j]) + dither[j&7])*scale>>shift);\
773 static int planarCopyWrapper(SwsContext *c, const uint8_t *src[],
774 int srcStride[], int srcSliceY, int srcSliceH,
775 uint8_t *dst[], int dstStride[])
778 for (plane = 0; plane < 4; plane++) {
779 int length = (plane == 0 || plane == 3) ? c->srcW : -((-c->srcW ) >> c->chrDstHSubSample);
780 int y = (plane == 0 || plane == 3) ? srcSliceY: -((-srcSliceY) >> c->chrDstVSubSample);
781 int height = (plane == 0 || plane == 3) ? srcSliceH: -((-srcSliceH) >> c->chrDstVSubSample);
782 const uint8_t *srcPtr = src[plane];
783 uint8_t *dstPtr = dst[plane] + dstStride[plane] * y;
784 int shiftonly= plane==1 || plane==2 || (!c->srcRange && plane==0);
788 // ignore palette for GRAY8
789 if (plane == 1 && !dst[2]) continue;
790 if (!src[plane] || (plane == 1 && !src[2])) {
791 if (is16BPS(c->dstFormat) || isNBPS(c->dstFormat)) {
792 fillPlane16(dst[plane], dstStride[plane], length, height, y,
793 plane == 3, av_pix_fmt_descriptors[c->dstFormat].comp[plane].depth_minus1);
795 fillPlane(dst[plane], dstStride[plane], length, height, y,
796 (plane == 3) ? 255 : 128);
799 if(isNBPS(c->srcFormat) || isNBPS(c->dstFormat)
800 || (is16BPS(c->srcFormat) != is16BPS(c->dstFormat))
802 const int src_depth = av_pix_fmt_descriptors[c->srcFormat].comp[plane].depth_minus1 + 1;
803 const int dst_depth = av_pix_fmt_descriptors[c->dstFormat].comp[plane].depth_minus1 + 1;
804 const uint16_t *srcPtr2 = (const uint16_t *) srcPtr;
805 uint16_t *dstPtr2 = (uint16_t*)dstPtr;
807 if (dst_depth == 8) {
808 if(isBE(c->srcFormat) == HAVE_BIGENDIAN){
809 DITHER_COPY(dstPtr, dstStride[plane], srcPtr2, srcStride[plane]/2, , )
811 DITHER_COPY(dstPtr, dstStride[plane], srcPtr2, srcStride[plane]/2, av_bswap16, )
813 } else if (src_depth == 8) {
814 for (i = 0; i < height; i++) {
817 for (j = 0; j < length; j++)\
818 w(&dstPtr2[j], srcPtr[j]<<(dst_depth-8));\
820 for (j = 0; j < length; j++)\
821 w(&dstPtr2[j], (srcPtr[j]<<(dst_depth-8)) |\
822 (srcPtr[j]>>(2*8-dst_depth)));\
824 if(isBE(c->dstFormat)){
829 dstPtr2 += dstStride[plane]/2;
830 srcPtr += srcStride[plane];
832 } else if (src_depth <= dst_depth) {
833 int orig_length = length;
834 for (i = 0; i < height; i++) {
835 if(isBE(c->srcFormat) == HAVE_BIGENDIAN &&
836 isBE(c->dstFormat) == HAVE_BIGENDIAN &&
838 unsigned shift = dst_depth - src_depth;
839 length = orig_length;
841 #define FAST_COPY_UP(shift) \
842 for (j = 0; j < length - 3; j += 4) { \
843 uint64_t v = AV_RN64A(srcPtr2 + j); \
844 AV_WN64A(dstPtr2 + j, v << shift); \
848 #define FAST_COPY_UP(shift) \
849 for (j = 0; j < length - 1; j += 2) { \
850 uint32_t v = AV_RN32A(srcPtr2 + j); \
851 AV_WN32A(dstPtr2 + j, v << shift); \
857 case 6: FAST_COPY_UP(6); break;
858 case 7: FAST_COPY_UP(7); break;
861 #define COPY_UP(r,w) \
863 for (j = 0; j < length; j++){ \
864 unsigned int v= r(&srcPtr2[j]);\
865 w(&dstPtr2[j], v<<(dst_depth-src_depth));\
868 for (j = 0; j < length; j++){ \
869 unsigned int v= r(&srcPtr2[j]);\
870 w(&dstPtr2[j], (v<<(dst_depth-src_depth)) | \
871 (v>>(2*src_depth-dst_depth)));\
874 if(isBE(c->srcFormat)){
875 if(isBE(c->dstFormat)){
876 COPY_UP(AV_RB16, AV_WB16)
878 COPY_UP(AV_RB16, AV_WL16)
881 if(isBE(c->dstFormat)){
882 COPY_UP(AV_RL16, AV_WB16)
884 COPY_UP(AV_RL16, AV_WL16)
887 dstPtr2 += dstStride[plane]/2;
888 srcPtr2 += srcStride[plane]/2;
891 if(isBE(c->srcFormat) == HAVE_BIGENDIAN){
892 if(isBE(c->dstFormat) == HAVE_BIGENDIAN){
893 DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, , )
895 DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, , av_bswap16)
898 if(isBE(c->dstFormat) == HAVE_BIGENDIAN){
899 DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, av_bswap16, )
901 DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, av_bswap16, av_bswap16)
905 } else if (is16BPS(c->srcFormat) && is16BPS(c->dstFormat) &&
906 isBE(c->srcFormat) != isBE(c->dstFormat)) {
908 for (i = 0; i < height; i++) {
909 for (j = 0; j < length; j++)
910 ((uint16_t *) dstPtr)[j] = av_bswap16(((const uint16_t *) srcPtr)[j]);
911 srcPtr += srcStride[plane];
912 dstPtr += dstStride[plane];
914 } else if (dstStride[plane] == srcStride[plane] &&
915 srcStride[plane] > 0 && srcStride[plane] == length) {
916 memcpy(dst[plane] + dstStride[plane] * y, src[plane],
917 height * dstStride[plane]);
919 if (is16BPS(c->srcFormat) && is16BPS(c->dstFormat))
921 else if (!av_pix_fmt_descriptors[c->srcFormat].comp[0].depth_minus1)
922 length >>= 3; // monowhite/black
923 for (i = 0; i < height; i++) {
924 memcpy(dstPtr, srcPtr, length);
925 srcPtr += srcStride[plane];
926 dstPtr += dstStride[plane];
935 #define IS_DIFFERENT_ENDIANESS(src_fmt, dst_fmt, pix_fmt) \
936 ((src_fmt == pix_fmt ## BE && dst_fmt == pix_fmt ## LE) || \
937 (src_fmt == pix_fmt ## LE && dst_fmt == pix_fmt ## BE))
940 void ff_get_unscaled_swscale(SwsContext *c)
942 const enum PixelFormat srcFormat = c->srcFormat;
943 const enum PixelFormat dstFormat = c->dstFormat;
944 const int flags = c->flags;
945 const int dstH = c->dstH;
948 needsDither = isAnyRGB(dstFormat) &&
949 c->dstFormatBpp < 24 &&
950 (c->dstFormatBpp < c->srcFormatBpp || (!isAnyRGB(srcFormat)));
953 if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) &&
954 (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21)) {
955 c->swScale = planarToNv12Wrapper;
958 if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUV422P ||
959 srcFormat == PIX_FMT_YUVA420P) && isAnyRGB(dstFormat) &&
960 !(flags & SWS_ACCURATE_RND) && !(dstH & 1)) {
961 c->swScale = ff_yuv2rgb_get_func_ptr(c);
964 if (srcFormat == PIX_FMT_YUV410P &&
965 (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P) &&
966 !(flags & SWS_BITEXACT)) {
967 c->swScale = yvu9ToYv12Wrapper;
971 if (srcFormat == PIX_FMT_BGR24 &&
972 (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P) &&
973 !(flags & SWS_ACCURATE_RND))
974 c->swScale = bgr24ToYv12Wrapper;
976 /* RGB/BGR -> RGB/BGR (no dither needed forms) */
977 if (isAnyRGB(srcFormat) && isAnyRGB(dstFormat) && findRgbConvFn(c)
978 && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))
979 c->swScale= rgbToRgbWrapper;
981 #define isByteRGB(f) (\
982 f == PIX_FMT_RGB32 ||\
983 f == PIX_FMT_RGB32_1 ||\
984 f == PIX_FMT_RGB24 ||\
985 f == PIX_FMT_BGR32 ||\
986 f == PIX_FMT_BGR32_1 ||\
989 if (isAnyRGB(srcFormat) && isPlanar(srcFormat) && isByteRGB(dstFormat))
990 c->swScale = planarRgbToRgbWrapper;
992 /* bswap 16 bits per pixel/component packed formats */
993 if (IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_BGR444) ||
994 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_BGR48) ||
995 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_BGRA64) ||
996 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_BGR555) ||
997 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_BGR565) ||
998 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_GRAY16) ||
999 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_RGB444) ||
1000 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_RGB48) ||
1001 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_RGBA64) ||
1002 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_RGB555) ||
1003 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_RGB565))
1004 c->swScale = packed_16bpc_bswap;
1006 if (usePal(srcFormat) && isByteRGB(dstFormat))
1007 c->swScale = palToRgbWrapper;
1009 if (srcFormat == PIX_FMT_YUV422P) {
1010 if (dstFormat == PIX_FMT_YUYV422)
1011 c->swScale = yuv422pToYuy2Wrapper;
1012 else if (dstFormat == PIX_FMT_UYVY422)
1013 c->swScale = yuv422pToUyvyWrapper;
1016 /* LQ converters if -sws 0 or -sws 4*/
1017 if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)) {
1019 if (srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) {
1020 if (dstFormat == PIX_FMT_YUYV422)
1021 c->swScale = planarToYuy2Wrapper;
1022 else if (dstFormat == PIX_FMT_UYVY422)
1023 c->swScale = planarToUyvyWrapper;
1026 if (srcFormat == PIX_FMT_YUYV422 &&
1027 (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))
1028 c->swScale = yuyvToYuv420Wrapper;
1029 if (srcFormat == PIX_FMT_UYVY422 &&
1030 (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))
1031 c->swScale = uyvyToYuv420Wrapper;
1032 if (srcFormat == PIX_FMT_YUYV422 && dstFormat == PIX_FMT_YUV422P)
1033 c->swScale = yuyvToYuv422Wrapper;
1034 if (srcFormat == PIX_FMT_UYVY422 && dstFormat == PIX_FMT_YUV422P)
1035 c->swScale = uyvyToYuv422Wrapper;
1037 #define isPlanarGray(x) (isGray(x) && (x) != PIX_FMT_GRAY8A)
1039 if ( srcFormat == dstFormat ||
1040 (srcFormat == PIX_FMT_YUVA420P && dstFormat == PIX_FMT_YUV420P) ||
1041 (srcFormat == PIX_FMT_YUV420P && dstFormat == PIX_FMT_YUVA420P) ||
1042 (isPlanarYUV(srcFormat) && isPlanarGray(dstFormat)) ||
1043 (isPlanarYUV(dstFormat) && isPlanarGray(srcFormat)) ||
1044 (isPlanarGray(dstFormat) && isPlanarGray(srcFormat)) ||
1045 (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat) &&
1046 c->chrDstHSubSample == c->chrSrcHSubSample &&
1047 c->chrDstVSubSample == c->chrSrcVSubSample &&
1048 dstFormat != PIX_FMT_NV12 && dstFormat != PIX_FMT_NV21 &&
1049 srcFormat != PIX_FMT_NV12 && srcFormat != PIX_FMT_NV21))
1051 if (isPacked(c->srcFormat))
1052 c->swScale = packedCopyWrapper;
1053 else /* Planar YUV or gray */
1054 c->swScale = planarCopyWrapper;
1058 ff_bfin_get_unscaled_swscale(c);
1060 ff_swscale_get_unscaled_altivec(c);
1063 static void reset_ptr(const uint8_t *src[], int format)
1065 if (!isALPHA(format))
1067 if (!isPlanar(format)) {
1068 src[3] = src[2] = NULL;
1070 if (!usePal(format))
1075 static int check_image_pointers(const uint8_t * const data[4], enum PixelFormat pix_fmt,
1076 const int linesizes[4])
1078 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
1081 for (i = 0; i < 4; i++) {
1082 int plane = desc->comp[i].plane;
1083 if (!data[plane] || !linesizes[plane])
1091 * swscale wrapper, so we don't need to export the SwsContext.
1092 * Assumes planar YUV to be in YUV order instead of YVU.
1094 int attribute_align_arg sws_scale(struct SwsContext *c,
1095 const uint8_t * const srcSlice[],
1096 const int srcStride[], int srcSliceY,
1097 int srcSliceH, uint8_t *const dst[],
1098 const int dstStride[])
1101 const uint8_t *src2[4] = { srcSlice[0], srcSlice[1], srcSlice[2], srcSlice[3] };
1102 uint8_t *dst2[4] = { dst[0], dst[1], dst[2], dst[3] };
1103 uint8_t *rgb0_tmp = NULL;
1105 // do not mess up sliceDir if we have a "trailing" 0-size slice
1109 if (!check_image_pointers(srcSlice, c->srcFormat, srcStride)) {
1110 av_log(c, AV_LOG_ERROR, "bad src image pointers\n");
1113 if (!check_image_pointers((const uint8_t* const*)dst, c->dstFormat, dstStride)) {
1114 av_log(c, AV_LOG_ERROR, "bad dst image pointers\n");
1118 if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
1119 av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");
1122 if (c->sliceDir == 0) {
1123 if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;
1126 if (usePal(c->srcFormat)) {
1127 for (i = 0; i < 256; i++) {
1128 int p, r, g, b, y, u, v, a = 0xff;
1129 if (c->srcFormat == PIX_FMT_PAL8) {
1130 p = ((const uint32_t *)(srcSlice[1]))[i];
1131 a = (p >> 24) & 0xFF;
1132 r = (p >> 16) & 0xFF;
1133 g = (p >> 8) & 0xFF;
1135 } else if (c->srcFormat == PIX_FMT_RGB8) {
1136 r = ( i >> 5 ) * 36;
1137 g = ((i >> 2) & 7) * 36;
1139 } else if (c->srcFormat == PIX_FMT_BGR8) {
1140 b = ( i >> 6 ) * 85;
1141 g = ((i >> 3) & 7) * 36;
1143 } else if (c->srcFormat == PIX_FMT_RGB4_BYTE) {
1144 r = ( i >> 3 ) * 255;
1145 g = ((i >> 1) & 3) * 85;
1147 } else if (c->srcFormat == PIX_FMT_GRAY8 || c->srcFormat == PIX_FMT_GRAY8A) {
1150 av_assert1(c->srcFormat == PIX_FMT_BGR4_BYTE);
1151 b = ( i >> 3 ) * 255;
1152 g = ((i >> 1) & 3) * 85;
1155 y = av_clip_uint8((RY * r + GY * g + BY * b + ( 33 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
1156 u = av_clip_uint8((RU * r + GU * g + BU * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
1157 v = av_clip_uint8((RV * r + GV * g + BV * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
1158 c->pal_yuv[i]= y + (u<<8) + (v<<16) + (a<<24);
1160 switch (c->dstFormat) {
1165 c->pal_rgb[i]= r + (g<<8) + (b<<16) + (a<<24);
1167 case PIX_FMT_BGR32_1:
1171 c->pal_rgb[i]= a + (r<<8) + (g<<16) + (b<<24);
1173 case PIX_FMT_RGB32_1:
1177 c->pal_rgb[i]= a + (b<<8) + (g<<16) + (r<<24);
1184 c->pal_rgb[i]= b + (g<<8) + (r<<16) + (a<<24);
1189 if (c->src0Alpha && !c->dst0Alpha && isALPHA(c->dstFormat)) {
1192 rgb0_tmp = av_malloc(FFABS(srcStride[0]) * srcSliceH + 32);
1193 base = srcStride[0] < 0 ? rgb0_tmp - srcStride[0] * (srcSliceH-1) : rgb0_tmp;
1194 for (y=0; y<srcSliceH; y++){
1195 memcpy(base + srcStride[0]*y, src2[0] + srcStride[0]*y, 4*c->srcW);
1196 for (x=c->src0Alpha-1; x<4*c->srcW; x+=4) {
1197 base[ srcStride[0]*y + x] = 0xFF;
1203 // copy strides, so they can safely be modified
1204 if (c->sliceDir == 1) {
1205 // slices go from top to bottom
1206 int srcStride2[4] = { srcStride[0], srcStride[1], srcStride[2],
1208 int dstStride2[4] = { dstStride[0], dstStride[1], dstStride[2],
1211 reset_ptr(src2, c->srcFormat);
1212 reset_ptr((void*)dst2, c->dstFormat);
1214 /* reset slice direction at end of frame */
1215 if (srcSliceY + srcSliceH == c->srcH)
1218 ret = c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2,
1221 // slices go from bottom to top => we flip the image internally
1222 int srcStride2[4] = { -srcStride[0], -srcStride[1], -srcStride[2],
1224 int dstStride2[4] = { -dstStride[0], -dstStride[1], -dstStride[2],
1227 src2[0] += (srcSliceH - 1) * srcStride[0];
1228 if (!usePal(c->srcFormat))
1229 src2[1] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[1];
1230 src2[2] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[2];
1231 src2[3] += (srcSliceH - 1) * srcStride[3];
1232 dst2[0] += ( c->dstH - 1) * dstStride[0];
1233 dst2[1] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[1];
1234 dst2[2] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[2];
1235 dst2[3] += ( c->dstH - 1) * dstStride[3];
1237 reset_ptr(src2, c->srcFormat);
1238 reset_ptr((void*)dst2, c->dstFormat);
1240 /* reset slice direction at end of frame */
1244 ret = c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH,
1245 srcSliceH, dst2, dstStride2);
1252 /* Convert the palette to the same packed 32-bit format as the palette */
1253 void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst,
1254 int num_pixels, const uint8_t *palette)
1258 for (i = 0; i < num_pixels; i++)
1259 ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i]];
1262 /* Palette format: ABCD -> dst format: ABC */
1263 void sws_convertPalette8ToPacked24(const uint8_t *src, uint8_t *dst,
1264 int num_pixels, const uint8_t *palette)
1268 for (i = 0; i < num_pixels; i++) {
1270 dst[0] = palette[src[i] * 4 + 0];
1271 dst[1] = palette[src[i] * 4 + 1];
1272 dst[2] = palette[src[i] * 4 + 2];