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 DECLARE_ALIGNED(8, const uint8_t, dithers)[8][8][8]={
39 { 0, 1, 0, 1, 0, 1, 0, 1,},
40 { 1, 0, 1, 0, 1, 0, 1, 0,},
41 { 0, 1, 0, 1, 0, 1, 0, 1,},
42 { 1, 0, 1, 0, 1, 0, 1, 0,},
43 { 0, 1, 0, 1, 0, 1, 0, 1,},
44 { 1, 0, 1, 0, 1, 0, 1, 0,},
45 { 0, 1, 0, 1, 0, 1, 0, 1,},
46 { 1, 0, 1, 0, 1, 0, 1, 0,},
48 { 1, 2, 1, 2, 1, 2, 1, 2,},
49 { 3, 0, 3, 0, 3, 0, 3, 0,},
50 { 1, 2, 1, 2, 1, 2, 1, 2,},
51 { 3, 0, 3, 0, 3, 0, 3, 0,},
52 { 1, 2, 1, 2, 1, 2, 1, 2,},
53 { 3, 0, 3, 0, 3, 0, 3, 0,},
54 { 1, 2, 1, 2, 1, 2, 1, 2,},
55 { 3, 0, 3, 0, 3, 0, 3, 0,},
57 { 2, 4, 3, 5, 2, 4, 3, 5,},
58 { 6, 0, 7, 1, 6, 0, 7, 1,},
59 { 3, 5, 2, 4, 3, 5, 2, 4,},
60 { 7, 1, 6, 0, 7, 1, 6, 0,},
61 { 2, 4, 3, 5, 2, 4, 3, 5,},
62 { 6, 0, 7, 1, 6, 0, 7, 1,},
63 { 3, 5, 2, 4, 3, 5, 2, 4,},
64 { 7, 1, 6, 0, 7, 1, 6, 0,},
66 { 4, 8, 7, 11, 4, 8, 7, 11,},
67 { 12, 0, 15, 3, 12, 0, 15, 3,},
68 { 6, 10, 5, 9, 6, 10, 5, 9,},
69 { 14, 2, 13, 1, 14, 2, 13, 1,},
70 { 4, 8, 7, 11, 4, 8, 7, 11,},
71 { 12, 0, 15, 3, 12, 0, 15, 3,},
72 { 6, 10, 5, 9, 6, 10, 5, 9,},
73 { 14, 2, 13, 1, 14, 2, 13, 1,},
75 { 9, 17, 15, 23, 8, 16, 14, 22,},
76 { 25, 1, 31, 7, 24, 0, 30, 6,},
77 { 13, 21, 11, 19, 12, 20, 10, 18,},
78 { 29, 5, 27, 3, 28, 4, 26, 2,},
79 { 8, 16, 14, 22, 9, 17, 15, 23,},
80 { 24, 0, 30, 6, 25, 1, 31, 7,},
81 { 12, 20, 10, 18, 13, 21, 11, 19,},
82 { 28, 4, 26, 2, 29, 5, 27, 3,},
84 { 18, 34, 30, 46, 17, 33, 29, 45,},
85 { 50, 2, 62, 14, 49, 1, 61, 13,},
86 { 26, 42, 22, 38, 25, 41, 21, 37,},
87 { 58, 10, 54, 6, 57, 9, 53, 5,},
88 { 16, 32, 28, 44, 19, 35, 31, 47,},
89 { 48, 0, 60, 12, 51, 3, 63, 15,},
90 { 24, 40, 20, 36, 27, 43, 23, 39,},
91 { 56, 8, 52, 4, 59, 11, 55, 7,},
93 { 18, 34, 30, 46, 17, 33, 29, 45,},
94 { 50, 2, 62, 14, 49, 1, 61, 13,},
95 { 26, 42, 22, 38, 25, 41, 21, 37,},
96 { 58, 10, 54, 6, 57, 9, 53, 5,},
97 { 16, 32, 28, 44, 19, 35, 31, 47,},
98 { 48, 0, 60, 12, 51, 3, 63, 15,},
99 { 24, 40, 20, 36, 27, 43, 23, 39,},
100 { 56, 8, 52, 4, 59, 11, 55, 7,},
102 { 36, 68, 60, 92, 34, 66, 58, 90,},
103 { 100, 4,124, 28, 98, 2,122, 26,},
104 { 52, 84, 44, 76, 50, 82, 42, 74,},
105 { 116, 20,108, 12,114, 18,106, 10,},
106 { 32, 64, 56, 88, 38, 70, 62, 94,},
107 { 96, 0,120, 24,102, 6,126, 30,},
108 { 48, 80, 40, 72, 54, 86, 46, 78,},
109 { 112, 16,104, 8,118, 22,110, 14,},
112 const uint16_t dither_scale[15][16]={
113 { 2, 3, 3, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,},
114 { 2, 3, 7, 7, 13, 13, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,},
115 { 3, 3, 4, 15, 15, 29, 57, 57, 57, 113, 113, 113, 113, 113, 113, 113,},
116 { 3, 4, 4, 5, 31, 31, 61, 121, 241, 241, 241, 241, 481, 481, 481, 481,},
117 { 3, 4, 5, 5, 6, 63, 63, 125, 249, 497, 993, 993, 993, 993, 993, 1985,},
118 { 3, 5, 6, 6, 6, 7, 127, 127, 253, 505, 1009, 2017, 4033, 4033, 4033, 4033,},
119 { 3, 5, 6, 7, 7, 7, 8, 255, 255, 509, 1017, 2033, 4065, 8129,16257,16257,},
120 { 3, 5, 6, 8, 8, 8, 8, 9, 511, 511, 1021, 2041, 4081, 8161,16321,32641,},
121 { 3, 5, 7, 8, 9, 9, 9, 9, 10, 1023, 1023, 2045, 4089, 8177,16353,32705,},
122 { 3, 5, 7, 8, 10, 10, 10, 10, 10, 11, 2047, 2047, 4093, 8185,16369,32737,},
123 { 3, 5, 7, 8, 10, 11, 11, 11, 11, 11, 12, 4095, 4095, 8189,16377,32753,},
124 { 3, 5, 7, 9, 10, 12, 12, 12, 12, 12, 12, 13, 8191, 8191,16381,32761,},
125 { 3, 5, 7, 9, 10, 12, 13, 13, 13, 13, 13, 13, 14,16383,16383,32765,},
126 { 3, 5, 7, 9, 10, 12, 14, 14, 14, 14, 14, 14, 14, 15,32767,32767,},
127 { 3, 5, 7, 9, 11, 12, 14, 15, 15, 15, 15, 15, 15, 15, 16,65535,},
131 static void fillPlane(uint8_t *plane, int stride, int width, int height, int y,
135 uint8_t *ptr = plane + stride * y;
136 for (i = 0; i < height; i++) {
137 memset(ptr, val, width);
142 static void fillPlane16(uint8_t *plane, int stride, int width, int height, int y,
146 uint8_t *ptr = plane + stride * y;
147 int v = alpha ? -1 : (1<<bits);
148 for (i = 0; i < height; i++) {
149 for (j = 0; j < width; j++) {
156 static void copyPlane(const uint8_t *src, int srcStride,
157 int srcSliceY, int srcSliceH, int width,
158 uint8_t *dst, int dstStride)
160 dst += dstStride * srcSliceY;
161 if (dstStride == srcStride && srcStride > 0) {
162 memcpy(dst, src, srcSliceH * dstStride);
165 for (i = 0; i < srcSliceH; i++) {
166 memcpy(dst, src, width);
173 static int planarToNv12Wrapper(SwsContext *c, const uint8_t *src[],
174 int srcStride[], int srcSliceY,
175 int srcSliceH, uint8_t *dstParam[],
178 uint8_t *dst = dstParam[1] + dstStride[1] * srcSliceY / 2;
180 copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,
181 dstParam[0], dstStride[0]);
183 if (c->dstFormat == AV_PIX_FMT_NV12)
184 interleaveBytes(src[1], src[2], dst, c->srcW / 2, srcSliceH / 2,
185 srcStride[1], srcStride[2], dstStride[0]);
187 interleaveBytes(src[2], src[1], dst, c->srcW / 2, srcSliceH / 2,
188 srcStride[2], srcStride[1], dstStride[0]);
193 static int planarToYuy2Wrapper(SwsContext *c, const uint8_t *src[],
194 int srcStride[], int srcSliceY, int srcSliceH,
195 uint8_t *dstParam[], int dstStride[])
197 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
199 yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
200 srcStride[1], dstStride[0]);
205 static int planarToUyvyWrapper(SwsContext *c, const uint8_t *src[],
206 int srcStride[], int srcSliceY, int srcSliceH,
207 uint8_t *dstParam[], int dstStride[])
209 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
211 yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
212 srcStride[1], dstStride[0]);
217 static int yuv422pToYuy2Wrapper(SwsContext *c, const uint8_t *src[],
218 int srcStride[], int srcSliceY, int srcSliceH,
219 uint8_t *dstParam[], int dstStride[])
221 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
223 yuv422ptoyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
224 srcStride[1], dstStride[0]);
229 static int yuv422pToUyvyWrapper(SwsContext *c, const uint8_t *src[],
230 int srcStride[], int srcSliceY, int srcSliceH,
231 uint8_t *dstParam[], int dstStride[])
233 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
235 yuv422ptouyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
236 srcStride[1], dstStride[0]);
241 static int yuyvToYuv420Wrapper(SwsContext *c, const uint8_t *src[],
242 int srcStride[], int srcSliceY, int srcSliceH,
243 uint8_t *dstParam[], int dstStride[])
245 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
246 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY / 2;
247 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY / 2;
249 yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
250 dstStride[1], srcStride[0]);
253 fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
258 static int yuyvToYuv422Wrapper(SwsContext *c, const uint8_t *src[],
259 int srcStride[], int srcSliceY, int srcSliceH,
260 uint8_t *dstParam[], int dstStride[])
262 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
263 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY;
264 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY;
266 yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
267 dstStride[1], srcStride[0]);
272 static int uyvyToYuv420Wrapper(SwsContext *c, const uint8_t *src[],
273 int srcStride[], int srcSliceY, int srcSliceH,
274 uint8_t *dstParam[], int dstStride[])
276 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
277 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY / 2;
278 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY / 2;
280 uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
281 dstStride[1], srcStride[0]);
284 fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
289 static int uyvyToYuv422Wrapper(SwsContext *c, const uint8_t *src[],
290 int srcStride[], int srcSliceY, int srcSliceH,
291 uint8_t *dstParam[], int dstStride[])
293 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
294 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY;
295 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY;
297 uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
298 dstStride[1], srcStride[0]);
303 static void gray8aToPacked32(const uint8_t *src, uint8_t *dst, int num_pixels,
304 const uint8_t *palette)
307 for (i = 0; i < num_pixels; i++)
308 ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i << 1]] | (src[(i << 1) + 1] << 24);
311 static void gray8aToPacked32_1(const uint8_t *src, uint8_t *dst, int num_pixels,
312 const uint8_t *palette)
316 for (i = 0; i < num_pixels; i++)
317 ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i << 1]] | src[(i << 1) + 1];
320 static void gray8aToPacked24(const uint8_t *src, uint8_t *dst, int num_pixels,
321 const uint8_t *palette)
325 for (i = 0; i < num_pixels; i++) {
327 dst[0] = palette[src[i << 1] * 4 + 0];
328 dst[1] = palette[src[i << 1] * 4 + 1];
329 dst[2] = palette[src[i << 1] * 4 + 2];
334 static int packed_16bpc_bswap(SwsContext *c, const uint8_t *src[],
335 int srcStride[], int srcSliceY, int srcSliceH,
336 uint8_t *dst[], int dstStride[])
339 int srcstr = srcStride[0] >> 1;
340 int dststr = dstStride[0] >> 1;
341 uint16_t *dstPtr = (uint16_t *) dst[0];
342 const uint16_t *srcPtr = (const uint16_t *) src[0];
343 int min_stride = FFMIN(srcstr, dststr);
345 for (i = 0; i < srcSliceH; i++) {
346 for (j = 0; j < min_stride; j++) {
347 dstPtr[j] = av_bswap16(srcPtr[j]);
356 static int palToRgbWrapper(SwsContext *c, const uint8_t *src[], int srcStride[],
357 int srcSliceY, int srcSliceH, uint8_t *dst[],
360 const enum AVPixelFormat srcFormat = c->srcFormat;
361 const enum AVPixelFormat dstFormat = c->dstFormat;
362 void (*conv)(const uint8_t *src, uint8_t *dst, int num_pixels,
363 const uint8_t *palette) = NULL;
365 uint8_t *dstPtr = dst[0] + dstStride[0] * srcSliceY;
366 const uint8_t *srcPtr = src[0];
368 if (srcFormat == AV_PIX_FMT_GRAY8A) {
370 case AV_PIX_FMT_RGB32 : conv = gray8aToPacked32; break;
371 case AV_PIX_FMT_BGR32 : conv = gray8aToPacked32; break;
372 case AV_PIX_FMT_BGR32_1: conv = gray8aToPacked32_1; break;
373 case AV_PIX_FMT_RGB32_1: conv = gray8aToPacked32_1; break;
374 case AV_PIX_FMT_RGB24 : conv = gray8aToPacked24; break;
375 case AV_PIX_FMT_BGR24 : conv = gray8aToPacked24; break;
377 } else if (usePal(srcFormat)) {
379 case AV_PIX_FMT_RGB32 : conv = sws_convertPalette8ToPacked32; break;
380 case AV_PIX_FMT_BGR32 : conv = sws_convertPalette8ToPacked32; break;
381 case AV_PIX_FMT_BGR32_1: conv = sws_convertPalette8ToPacked32; break;
382 case AV_PIX_FMT_RGB32_1: conv = sws_convertPalette8ToPacked32; break;
383 case AV_PIX_FMT_RGB24 : conv = sws_convertPalette8ToPacked24; break;
384 case AV_PIX_FMT_BGR24 : conv = sws_convertPalette8ToPacked24; break;
389 av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
390 av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat));
392 for (i = 0; i < srcSliceH; i++) {
393 conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);
394 srcPtr += srcStride[0];
395 dstPtr += dstStride[0];
402 static void gbr24ptopacked24(const uint8_t *src[], int srcStride[],
403 uint8_t *dst, int dstStride, int srcSliceH,
407 for (h = 0; h < srcSliceH; h++) {
408 uint8_t *dest = dst + dstStride * h;
409 for (x = 0; x < width; x++) {
415 for (i = 0; i < 3; i++)
416 src[i] += srcStride[i];
420 static void gbr24ptopacked32(const uint8_t *src[], int srcStride[],
421 uint8_t *dst, int dstStride, int srcSliceH,
422 int alpha_first, int width)
425 for (h = 0; h < srcSliceH; h++) {
426 uint8_t *dest = dst + dstStride * h;
429 for (x = 0; x < width; x++) {
436 for (x = 0; x < width; x++) {
444 for (i = 0; i < 3; i++)
445 src[i] += srcStride[i];
449 static int planarRgbToRgbWrapper(SwsContext *c, const uint8_t *src[],
450 int srcStride[], int srcSliceY, int srcSliceH,
451 uint8_t *dst[], int dstStride[])
454 const uint8_t *src102[] = { src[1], src[0], src[2] };
455 const uint8_t *src201[] = { src[2], src[0], src[1] };
456 int stride102[] = { srcStride[1], srcStride[0], srcStride[2] };
457 int stride201[] = { srcStride[2], srcStride[0], srcStride[1] };
459 if (c->srcFormat != AV_PIX_FMT_GBRP) {
460 av_log(c, AV_LOG_ERROR, "unsupported planar RGB conversion %s -> %s\n",
461 av_get_pix_fmt_name(c->srcFormat),
462 av_get_pix_fmt_name(c->dstFormat));
466 switch (c->dstFormat) {
467 case AV_PIX_FMT_BGR24:
468 gbr24ptopacked24(src102, stride102,
469 dst[0] + srcSliceY * dstStride[0], dstStride[0],
473 case AV_PIX_FMT_RGB24:
474 gbr24ptopacked24(src201, stride201,
475 dst[0] + srcSliceY * dstStride[0], dstStride[0],
479 case AV_PIX_FMT_ARGB:
481 case AV_PIX_FMT_RGBA:
482 gbr24ptopacked32(src201, stride201,
483 dst[0] + srcSliceY * dstStride[0], dstStride[0],
484 srcSliceH, alpha_first, c->srcW);
487 case AV_PIX_FMT_ABGR:
489 case AV_PIX_FMT_BGRA:
490 gbr24ptopacked32(src102, stride102,
491 dst[0] + srcSliceY * dstStride[0], dstStride[0],
492 srcSliceH, alpha_first, c->srcW);
496 av_log(c, AV_LOG_ERROR,
497 "unsupported planar RGB conversion %s -> %s\n",
498 av_get_pix_fmt_name(c->srcFormat),
499 av_get_pix_fmt_name(c->dstFormat));
505 #define isRGBA32(x) ( \
506 (x) == AV_PIX_FMT_ARGB \
507 || (x) == AV_PIX_FMT_RGBA \
508 || (x) == AV_PIX_FMT_BGRA \
509 || (x) == AV_PIX_FMT_ABGR \
512 #define isRGBA64(x) ( \
513 (x) == AV_PIX_FMT_RGBA64LE \
514 || (x) == AV_PIX_FMT_RGBA64BE \
515 || (x) == AV_PIX_FMT_BGRA64LE \
516 || (x) == AV_PIX_FMT_BGRA64BE \
519 #define isRGB48(x) ( \
520 (x) == AV_PIX_FMT_RGB48LE \
521 || (x) == AV_PIX_FMT_RGB48BE \
522 || (x) == AV_PIX_FMT_BGR48LE \
523 || (x) == AV_PIX_FMT_BGR48BE \
526 /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */
527 typedef void (* rgbConvFn) (const uint8_t *, uint8_t *, int);
528 static rgbConvFn findRgbConvFn(SwsContext *c)
530 const enum AVPixelFormat srcFormat = c->srcFormat;
531 const enum AVPixelFormat dstFormat = c->dstFormat;
532 const int srcId = c->srcFormatBpp;
533 const int dstId = c->dstFormatBpp;
534 rgbConvFn conv = NULL;
536 #define IS_NOT_NE(bpp, desc) \
537 (((bpp + 7) >> 3) == 2 && \
538 (!(desc->flags & PIX_FMT_BE) != !HAVE_BIGENDIAN))
540 #define CONV_IS(src, dst) (srcFormat == AV_PIX_FMT_##src && dstFormat == AV_PIX_FMT_##dst)
542 if (isRGBA32(srcFormat) && isRGBA32(dstFormat)) {
543 if ( CONV_IS(ABGR, RGBA)
544 || CONV_IS(ARGB, BGRA)
545 || CONV_IS(BGRA, ARGB)
546 || CONV_IS(RGBA, ABGR)) conv = shuffle_bytes_3210;
547 else if (CONV_IS(ABGR, ARGB)
548 || CONV_IS(ARGB, ABGR)) conv = shuffle_bytes_0321;
549 else if (CONV_IS(ABGR, BGRA)
550 || CONV_IS(ARGB, RGBA)) conv = shuffle_bytes_1230;
551 else if (CONV_IS(BGRA, RGBA)
552 || CONV_IS(RGBA, BGRA)) conv = shuffle_bytes_2103;
553 else if (CONV_IS(BGRA, ABGR)
554 || CONV_IS(RGBA, ARGB)) conv = shuffle_bytes_3012;
555 } else if (isRGB48(srcFormat) && isRGB48(dstFormat)) {
556 if (CONV_IS(RGB48LE, BGR48LE)
557 || CONV_IS(BGR48LE, RGB48LE)
558 || CONV_IS(RGB48BE, BGR48BE)
559 || CONV_IS(BGR48BE, RGB48BE)) conv = rgb48tobgr48_nobswap;
560 else if (CONV_IS(RGB48LE, BGR48BE)
561 || CONV_IS(BGR48LE, RGB48BE)
562 || CONV_IS(RGB48BE, BGR48LE)
563 || CONV_IS(BGR48BE, RGB48LE)) conv = rgb48tobgr48_bswap;
564 } else if (isRGBA64(srcFormat) && isRGB48(dstFormat)) {
565 if (CONV_IS(RGBA64LE, BGR48LE)
566 || CONV_IS(BGRA64LE, RGB48LE)
567 || CONV_IS(RGBA64BE, BGR48BE)
568 || CONV_IS(BGRA64BE, RGB48BE)) conv = rgb64tobgr48_nobswap;
569 else if (CONV_IS(RGBA64LE, BGR48BE)
570 || CONV_IS(BGRA64LE, RGB48BE)
571 || CONV_IS(RGBA64BE, BGR48LE)
572 || CONV_IS(BGRA64BE, RGB48LE)) conv = rgb64tobgr48_bswap;
573 else if (CONV_IS(RGBA64LE, RGB48LE)
574 || CONV_IS(BGRA64LE, BGR48LE)
575 || CONV_IS(RGBA64BE, RGB48BE)
576 || CONV_IS(BGRA64BE, BGR48BE)) conv = rgb64to48_nobswap;
577 else if (CONV_IS(RGBA64LE, RGB48BE)
578 || CONV_IS(BGRA64LE, BGR48BE)
579 || CONV_IS(RGBA64BE, RGB48LE)
580 || CONV_IS(BGRA64BE, BGR48LE)) conv = rgb64to48_bswap;
583 if ((isBGRinInt(srcFormat) && isBGRinInt(dstFormat)) ||
584 (isRGBinInt(srcFormat) && isRGBinInt(dstFormat))) {
585 switch (srcId | (dstId << 16)) {
586 case 0x000F000C: conv = rgb12to15; break;
587 case 0x000F0010: conv = rgb16to15; break;
588 case 0x000F0018: conv = rgb24to15; break;
589 case 0x000F0020: conv = rgb32to15; break;
590 case 0x0010000F: conv = rgb15to16; break;
591 case 0x00100018: conv = rgb24to16; break;
592 case 0x00100020: conv = rgb32to16; break;
593 case 0x0018000F: conv = rgb15to24; break;
594 case 0x00180010: conv = rgb16to24; break;
595 case 0x00180020: conv = rgb32to24; break;
596 case 0x0020000F: conv = rgb15to32; break;
597 case 0x00200010: conv = rgb16to32; break;
598 case 0x00200018: conv = rgb24to32; break;
600 } else if ((isBGRinInt(srcFormat) && isRGBinInt(dstFormat)) ||
601 (isRGBinInt(srcFormat) && isBGRinInt(dstFormat))) {
602 switch (srcId | (dstId << 16)) {
603 case 0x000C000C: conv = rgb12tobgr12; break;
604 case 0x000F000F: conv = rgb15tobgr15; break;
605 case 0x000F0010: conv = rgb16tobgr15; break;
606 case 0x000F0018: conv = rgb24tobgr15; break;
607 case 0x000F0020: conv = rgb32tobgr15; break;
608 case 0x0010000F: conv = rgb15tobgr16; break;
609 case 0x00100010: conv = rgb16tobgr16; break;
610 case 0x00100018: conv = rgb24tobgr16; break;
611 case 0x00100020: conv = rgb32tobgr16; break;
612 case 0x0018000F: conv = rgb15tobgr24; break;
613 case 0x00180010: conv = rgb16tobgr24; break;
614 case 0x00180018: conv = rgb24tobgr24; break;
615 case 0x00180020: conv = rgb32tobgr24; break;
616 case 0x0020000F: conv = rgb15tobgr32; break;
617 case 0x00200010: conv = rgb16tobgr32; break;
618 case 0x00200018: conv = rgb24tobgr32; break;
625 /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */
626 static int rgbToRgbWrapper(SwsContext *c, const uint8_t *src[], int srcStride[],
627 int srcSliceY, int srcSliceH, uint8_t *dst[],
631 const enum AVPixelFormat srcFormat = c->srcFormat;
632 const enum AVPixelFormat dstFormat = c->dstFormat;
633 const AVPixFmtDescriptor *desc_src = av_pix_fmt_desc_get(c->srcFormat);
634 const AVPixFmtDescriptor *desc_dst = av_pix_fmt_desc_get(c->dstFormat);
635 const int srcBpp = (c->srcFormatBpp + 7) >> 3;
636 const int dstBpp = (c->dstFormatBpp + 7) >> 3;
637 rgbConvFn conv = findRgbConvFn(c);
640 av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
641 av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat));
643 const uint8_t *srcPtr = src[0];
644 uint8_t *dstPtr = dst[0];
645 int src_bswap = IS_NOT_NE(c->srcFormatBpp, desc_src);
646 int dst_bswap = IS_NOT_NE(c->dstFormatBpp, desc_dst);
648 if ((srcFormat == AV_PIX_FMT_RGB32_1 || srcFormat == AV_PIX_FMT_BGR32_1) &&
649 !isRGBA32(dstFormat))
650 srcPtr += ALT32_CORR;
652 if ((dstFormat == AV_PIX_FMT_RGB32_1 || dstFormat == AV_PIX_FMT_BGR32_1) &&
653 !isRGBA32(srcFormat))
654 dstPtr += ALT32_CORR;
656 if (dstStride[0] * srcBpp == srcStride[0] * dstBpp && srcStride[0] > 0 &&
657 !(srcStride[0] % srcBpp) && !dst_bswap && !src_bswap)
658 conv(srcPtr, dstPtr + dstStride[0] * srcSliceY,
659 srcSliceH * srcStride[0]);
662 dstPtr += dstStride[0] * srcSliceY;
664 for (i = 0; i < srcSliceH; i++) {
666 for(j=0; j<c->srcW; j++)
667 ((uint16_t*)c->formatConvBuffer)[j] = av_bswap16(((uint16_t*)srcPtr)[j]);
668 conv(c->formatConvBuffer, dstPtr, c->srcW * srcBpp);
670 conv(srcPtr, dstPtr, c->srcW * srcBpp);
672 for(j=0; j<c->srcW; j++)
673 ((uint16_t*)dstPtr)[j] = av_bswap16(((uint16_t*)dstPtr)[j]);
674 srcPtr += srcStride[0];
675 dstPtr += dstStride[0];
682 static int bgr24ToYv12Wrapper(SwsContext *c, const uint8_t *src[],
683 int srcStride[], int srcSliceY, int srcSliceH,
684 uint8_t *dst[], int dstStride[])
688 dst[0] + srcSliceY * dstStride[0],
689 dst[1] + (srcSliceY >> 1) * dstStride[1],
690 dst[2] + (srcSliceY >> 1) * dstStride[2],
692 dstStride[0], dstStride[1], srcStride[0]);
694 fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
698 static int yvu9ToYv12Wrapper(SwsContext *c, const uint8_t *src[],
699 int srcStride[], int srcSliceY, int srcSliceH,
700 uint8_t *dst[], int dstStride[])
702 copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,
703 dst[0], dstStride[0]);
705 planar2x(src[1], dst[1] + dstStride[1] * (srcSliceY >> 1), c->chrSrcW,
706 srcSliceH >> 2, srcStride[1], dstStride[1]);
707 planar2x(src[2], dst[2] + dstStride[2] * (srcSliceY >> 1), c->chrSrcW,
708 srcSliceH >> 2, srcStride[2], dstStride[2]);
710 fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
714 /* unscaled copy like stuff (assumes nearly identical formats) */
715 static int packedCopyWrapper(SwsContext *c, const uint8_t *src[],
716 int srcStride[], int srcSliceY, int srcSliceH,
717 uint8_t *dst[], int dstStride[])
719 if (dstStride[0] == srcStride[0] && srcStride[0] > 0)
720 memcpy(dst[0] + dstStride[0] * srcSliceY, src[0], srcSliceH * dstStride[0]);
723 const uint8_t *srcPtr = src[0];
724 uint8_t *dstPtr = dst[0] + dstStride[0] * srcSliceY;
727 /* universal length finder */
728 while (length + c->srcW <= FFABS(dstStride[0]) &&
729 length + c->srcW <= FFABS(srcStride[0]))
731 av_assert1(length != 0);
733 for (i = 0; i < srcSliceH; i++) {
734 memcpy(dstPtr, srcPtr, length);
735 srcPtr += srcStride[0];
736 dstPtr += dstStride[0];
742 #define DITHER_COPY(dst, dstStride, src, srcStride, bswap, dbswap)\
743 uint16_t scale= dither_scale[dst_depth-1][src_depth-1];\
744 int shift= src_depth-dst_depth + dither_scale[src_depth-2][dst_depth-1];\
745 for (i = 0; i < height; i++) {\
746 const uint8_t *dither= dithers[src_depth-9][i&7];\
747 for (j = 0; j < length-7; j+=8){\
748 dst[j+0] = dbswap((bswap(src[j+0]) + dither[0])*scale>>shift);\
749 dst[j+1] = dbswap((bswap(src[j+1]) + dither[1])*scale>>shift);\
750 dst[j+2] = dbswap((bswap(src[j+2]) + dither[2])*scale>>shift);\
751 dst[j+3] = dbswap((bswap(src[j+3]) + dither[3])*scale>>shift);\
752 dst[j+4] = dbswap((bswap(src[j+4]) + dither[4])*scale>>shift);\
753 dst[j+5] = dbswap((bswap(src[j+5]) + dither[5])*scale>>shift);\
754 dst[j+6] = dbswap((bswap(src[j+6]) + dither[6])*scale>>shift);\
755 dst[j+7] = dbswap((bswap(src[j+7]) + dither[7])*scale>>shift);\
757 for (; j < length; j++)\
758 dst[j] = dbswap((bswap(src[j]) + dither[j&7])*scale>>shift);\
763 static int planarCopyWrapper(SwsContext *c, const uint8_t *src[],
764 int srcStride[], int srcSliceY, int srcSliceH,
765 uint8_t *dst[], int dstStride[])
767 const AVPixFmtDescriptor *desc_src = av_pix_fmt_desc_get(c->srcFormat);
768 const AVPixFmtDescriptor *desc_dst = av_pix_fmt_desc_get(c->dstFormat);
770 for (plane = 0; plane < 4; plane++) {
771 int length = (plane == 0 || plane == 3) ? c->srcW : -((-c->srcW ) >> c->chrDstHSubSample);
772 int y = (plane == 0 || plane == 3) ? srcSliceY: -((-srcSliceY) >> c->chrDstVSubSample);
773 int height = (plane == 0 || plane == 3) ? srcSliceH: -((-srcSliceH) >> c->chrDstVSubSample);
774 const uint8_t *srcPtr = src[plane];
775 uint8_t *dstPtr = dst[plane] + dstStride[plane] * y;
776 int shiftonly= plane==1 || plane==2 || (!c->srcRange && plane==0);
780 // ignore palette for GRAY8
781 if (plane == 1 && !dst[2]) continue;
782 if (!src[plane] || (plane == 1 && !src[2])) {
783 if (is16BPS(c->dstFormat) || isNBPS(c->dstFormat)) {
784 fillPlane16(dst[plane], dstStride[plane], length, height, y,
785 plane == 3, desc_dst->comp[plane].depth_minus1);
787 fillPlane(dst[plane], dstStride[plane], length, height, y,
788 (plane == 3) ? 255 : 128);
791 if(isNBPS(c->srcFormat) || isNBPS(c->dstFormat)
792 || (is16BPS(c->srcFormat) != is16BPS(c->dstFormat))
794 const int src_depth = desc_src->comp[plane].depth_minus1 + 1;
795 const int dst_depth = desc_dst->comp[plane].depth_minus1 + 1;
796 const uint16_t *srcPtr2 = (const uint16_t *) srcPtr;
797 uint16_t *dstPtr2 = (uint16_t*)dstPtr;
799 if (dst_depth == 8) {
800 if(isBE(c->srcFormat) == HAVE_BIGENDIAN){
801 DITHER_COPY(dstPtr, dstStride[plane], srcPtr2, srcStride[plane]/2, , )
803 DITHER_COPY(dstPtr, dstStride[plane], srcPtr2, srcStride[plane]/2, av_bswap16, )
805 } else if (src_depth == 8) {
806 for (i = 0; i < height; i++) {
809 for (j = 0; j < length; j++)\
810 w(&dstPtr2[j], srcPtr[j]<<(dst_depth-8));\
812 for (j = 0; j < length; j++)\
813 w(&dstPtr2[j], (srcPtr[j]<<(dst_depth-8)) |\
814 (srcPtr[j]>>(2*8-dst_depth)));\
816 if(isBE(c->dstFormat)){
821 dstPtr2 += dstStride[plane]/2;
822 srcPtr += srcStride[plane];
824 } else if (src_depth <= dst_depth) {
825 int orig_length = length;
826 for (i = 0; i < height; i++) {
827 if(isBE(c->srcFormat) == HAVE_BIGENDIAN &&
828 isBE(c->dstFormat) == HAVE_BIGENDIAN &&
830 unsigned shift = dst_depth - src_depth;
831 length = orig_length;
833 #define FAST_COPY_UP(shift) \
834 for (j = 0; j < length - 3; j += 4) { \
835 uint64_t v = AV_RN64A(srcPtr2 + j); \
836 AV_WN64A(dstPtr2 + j, v << shift); \
840 #define FAST_COPY_UP(shift) \
841 for (j = 0; j < length - 1; j += 2) { \
842 uint32_t v = AV_RN32A(srcPtr2 + j); \
843 AV_WN32A(dstPtr2 + j, v << shift); \
849 case 6: FAST_COPY_UP(6); break;
850 case 7: FAST_COPY_UP(7); break;
853 #define COPY_UP(r,w) \
855 for (j = 0; j < length; j++){ \
856 unsigned int v= r(&srcPtr2[j]);\
857 w(&dstPtr2[j], v<<(dst_depth-src_depth));\
860 for (j = 0; j < length; j++){ \
861 unsigned int v= r(&srcPtr2[j]);\
862 w(&dstPtr2[j], (v<<(dst_depth-src_depth)) | \
863 (v>>(2*src_depth-dst_depth)));\
866 if(isBE(c->srcFormat)){
867 if(isBE(c->dstFormat)){
868 COPY_UP(AV_RB16, AV_WB16)
870 COPY_UP(AV_RB16, AV_WL16)
873 if(isBE(c->dstFormat)){
874 COPY_UP(AV_RL16, AV_WB16)
876 COPY_UP(AV_RL16, AV_WL16)
879 dstPtr2 += dstStride[plane]/2;
880 srcPtr2 += srcStride[plane]/2;
883 if(isBE(c->srcFormat) == HAVE_BIGENDIAN){
884 if(isBE(c->dstFormat) == HAVE_BIGENDIAN){
885 DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, , )
887 DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, , av_bswap16)
890 if(isBE(c->dstFormat) == HAVE_BIGENDIAN){
891 DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, av_bswap16, )
893 DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, av_bswap16, av_bswap16)
897 } else if (is16BPS(c->srcFormat) && is16BPS(c->dstFormat) &&
898 isBE(c->srcFormat) != isBE(c->dstFormat)) {
900 for (i = 0; i < height; i++) {
901 for (j = 0; j < length; j++)
902 ((uint16_t *) dstPtr)[j] = av_bswap16(((const uint16_t *) srcPtr)[j]);
903 srcPtr += srcStride[plane];
904 dstPtr += dstStride[plane];
906 } else if (dstStride[plane] == srcStride[plane] &&
907 srcStride[plane] > 0 && srcStride[plane] == length) {
908 memcpy(dst[plane] + dstStride[plane] * y, src[plane],
909 height * dstStride[plane]);
911 if (is16BPS(c->srcFormat) && is16BPS(c->dstFormat))
913 else if (!desc_src->comp[0].depth_minus1)
914 length >>= 3; // monowhite/black
915 for (i = 0; i < height; i++) {
916 memcpy(dstPtr, srcPtr, length);
917 srcPtr += srcStride[plane];
918 dstPtr += dstStride[plane];
927 #define IS_DIFFERENT_ENDIANESS(src_fmt, dst_fmt, pix_fmt) \
928 ((src_fmt == pix_fmt ## BE && dst_fmt == pix_fmt ## LE) || \
929 (src_fmt == pix_fmt ## LE && dst_fmt == pix_fmt ## BE))
932 void ff_get_unscaled_swscale(SwsContext *c)
934 const enum AVPixelFormat srcFormat = c->srcFormat;
935 const enum AVPixelFormat dstFormat = c->dstFormat;
936 const int flags = c->flags;
937 const int dstH = c->dstH;
940 needsDither = isAnyRGB(dstFormat) &&
941 c->dstFormatBpp < 24 &&
942 (c->dstFormatBpp < c->srcFormatBpp || (!isAnyRGB(srcFormat)));
945 if ((srcFormat == AV_PIX_FMT_YUV420P || srcFormat == AV_PIX_FMT_YUVA420P) &&
946 (dstFormat == AV_PIX_FMT_NV12 || dstFormat == AV_PIX_FMT_NV21)) {
947 c->swScale = planarToNv12Wrapper;
950 if ((srcFormat == AV_PIX_FMT_YUV420P || srcFormat == AV_PIX_FMT_YUV422P ||
951 srcFormat == AV_PIX_FMT_YUVA420P) && isAnyRGB(dstFormat) &&
952 !(flags & SWS_ACCURATE_RND) && !(dstH & 1)) {
953 c->swScale = ff_yuv2rgb_get_func_ptr(c);
956 if (srcFormat == AV_PIX_FMT_YUV410P &&
957 (dstFormat == AV_PIX_FMT_YUV420P || dstFormat == AV_PIX_FMT_YUVA420P) &&
958 !(flags & SWS_BITEXACT)) {
959 c->swScale = yvu9ToYv12Wrapper;
963 if (srcFormat == AV_PIX_FMT_BGR24 &&
964 (dstFormat == AV_PIX_FMT_YUV420P || dstFormat == AV_PIX_FMT_YUVA420P) &&
965 !(flags & SWS_ACCURATE_RND))
966 c->swScale = bgr24ToYv12Wrapper;
968 /* RGB/BGR -> RGB/BGR (no dither needed forms) */
969 if (isAnyRGB(srcFormat) && isAnyRGB(dstFormat) && findRgbConvFn(c)
970 && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))
971 c->swScale= rgbToRgbWrapper;
973 #define isByteRGB(f) (\
974 f == AV_PIX_FMT_RGB32 ||\
975 f == AV_PIX_FMT_RGB32_1 ||\
976 f == AV_PIX_FMT_RGB24 ||\
977 f == AV_PIX_FMT_BGR32 ||\
978 f == AV_PIX_FMT_BGR32_1 ||\
979 f == AV_PIX_FMT_BGR24)
981 if (isAnyRGB(srcFormat) && isPlanar(srcFormat) && isByteRGB(dstFormat))
982 c->swScale = planarRgbToRgbWrapper;
984 /* bswap 16 bits per pixel/component packed formats */
985 if (IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BGR444) ||
986 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BGR48) ||
987 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BGRA64) ||
988 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BGR555) ||
989 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BGR565) ||
990 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_GRAY16) ||
991 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_RGB444) ||
992 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_RGB48) ||
993 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_RGBA64) ||
994 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_RGB555) ||
995 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_RGB565))
996 c->swScale = packed_16bpc_bswap;
998 if (usePal(srcFormat) && isByteRGB(dstFormat))
999 c->swScale = palToRgbWrapper;
1001 if (srcFormat == AV_PIX_FMT_YUV422P) {
1002 if (dstFormat == AV_PIX_FMT_YUYV422)
1003 c->swScale = yuv422pToYuy2Wrapper;
1004 else if (dstFormat == AV_PIX_FMT_UYVY422)
1005 c->swScale = yuv422pToUyvyWrapper;
1008 /* LQ converters if -sws 0 or -sws 4*/
1009 if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)) {
1011 if (srcFormat == AV_PIX_FMT_YUV420P || srcFormat == AV_PIX_FMT_YUVA420P) {
1012 if (dstFormat == AV_PIX_FMT_YUYV422)
1013 c->swScale = planarToYuy2Wrapper;
1014 else if (dstFormat == AV_PIX_FMT_UYVY422)
1015 c->swScale = planarToUyvyWrapper;
1018 if (srcFormat == AV_PIX_FMT_YUYV422 &&
1019 (dstFormat == AV_PIX_FMT_YUV420P || dstFormat == AV_PIX_FMT_YUVA420P))
1020 c->swScale = yuyvToYuv420Wrapper;
1021 if (srcFormat == AV_PIX_FMT_UYVY422 &&
1022 (dstFormat == AV_PIX_FMT_YUV420P || dstFormat == AV_PIX_FMT_YUVA420P))
1023 c->swScale = uyvyToYuv420Wrapper;
1024 if (srcFormat == AV_PIX_FMT_YUYV422 && dstFormat == AV_PIX_FMT_YUV422P)
1025 c->swScale = yuyvToYuv422Wrapper;
1026 if (srcFormat == AV_PIX_FMT_UYVY422 && dstFormat == AV_PIX_FMT_YUV422P)
1027 c->swScale = uyvyToYuv422Wrapper;
1029 #define isPlanarGray(x) (isGray(x) && (x) != AV_PIX_FMT_GRAY8A)
1031 if ( srcFormat == dstFormat ||
1032 (srcFormat == AV_PIX_FMT_YUVA420P && dstFormat == AV_PIX_FMT_YUV420P) ||
1033 (srcFormat == AV_PIX_FMT_YUV420P && dstFormat == AV_PIX_FMT_YUVA420P) ||
1034 (isPlanarYUV(srcFormat) && isPlanarGray(dstFormat)) ||
1035 (isPlanarYUV(dstFormat) && isPlanarGray(srcFormat)) ||
1036 (isPlanarGray(dstFormat) && isPlanarGray(srcFormat)) ||
1037 (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat) &&
1038 c->chrDstHSubSample == c->chrSrcHSubSample &&
1039 c->chrDstVSubSample == c->chrSrcVSubSample &&
1040 dstFormat != AV_PIX_FMT_NV12 && dstFormat != AV_PIX_FMT_NV21 &&
1041 srcFormat != AV_PIX_FMT_NV12 && srcFormat != AV_PIX_FMT_NV21))
1043 if (isPacked(c->srcFormat))
1044 c->swScale = packedCopyWrapper;
1045 else /* Planar YUV or gray */
1046 c->swScale = planarCopyWrapper;
1050 ff_bfin_get_unscaled_swscale(c);
1052 ff_swscale_get_unscaled_altivec(c);
1055 /* Convert the palette to the same packed 32-bit format as the palette */
1056 void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst,
1057 int num_pixels, const uint8_t *palette)
1061 for (i = 0; i < num_pixels; i++)
1062 ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i]];
1065 /* Palette format: ABCD -> dst format: ABC */
1066 void sws_convertPalette8ToPacked24(const uint8_t *src, uint8_t *dst,
1067 int num_pixels, const uint8_t *palette)
1071 for (i = 0; i < num_pixels; i++) {
1073 dst[0] = palette[src[i] * 4 + 0];
1074 dst[1] = palette[src[i] * 4 + 1];
1075 dst[2] = palette[src[i] * 4 + 2];