2 * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of Libav.
6 * Libav is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * Libav is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28 #include "swscale_internal.h"
30 #include "libavutil/intreadwrite.h"
31 #include "libavutil/cpu.h"
32 #include "libavutil/avutil.h"
33 #include "libavutil/mathematics.h"
34 #include "libavutil/bswap.h"
35 #include "libavutil/pixdesc.h"
37 DECLARE_ALIGNED(8, const uint8_t, dither_8x8_1)[8][8] = {
38 { 0, 1, 0, 1, 0, 1, 0, 1,},
39 { 1, 0, 1, 0, 1, 0, 1, 0,},
40 { 0, 1, 0, 1, 0, 1, 0, 1,},
41 { 1, 0, 1, 0, 1, 0, 1, 0,},
42 { 0, 1, 0, 1, 0, 1, 0, 1,},
43 { 1, 0, 1, 0, 1, 0, 1, 0,},
44 { 0, 1, 0, 1, 0, 1, 0, 1,},
45 { 1, 0, 1, 0, 1, 0, 1, 0,},
47 DECLARE_ALIGNED(8, const uint8_t, dither_8x8_3)[8][8] = {
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 DECLARE_ALIGNED(8, const uint8_t, dither_8x8_64)[8][8] = {
58 { 18, 34, 30, 46, 17, 33, 29, 45,},
59 { 50, 2, 62, 14, 49, 1, 61, 13,},
60 { 26, 42, 22, 38, 25, 41, 21, 37,},
61 { 58, 10, 54, 6, 57, 9, 53, 5,},
62 { 16, 32, 28, 44, 19, 35, 31, 47,},
63 { 48, 0, 60, 12, 51, 3, 63, 15,},
64 { 24, 40, 20, 36, 27, 43, 23, 39,},
65 { 56, 8, 52, 4, 59, 11, 55, 7,},
67 extern const uint8_t dither_8x8_128[8][8];
68 DECLARE_ALIGNED(8, const uint8_t, dither_8x8_256)[8][8] = {
69 { 72, 136, 120, 184, 68, 132, 116, 180,},
70 { 200, 8, 248, 56, 196, 4, 244, 52,},
71 { 104, 168, 88, 152, 100, 164, 84, 148,},
72 { 232, 40, 216, 24, 228, 36, 212, 20,},
73 { 64, 128, 102, 176, 76, 140, 124, 188,},
74 { 192, 0, 240, 48, 204, 12, 252, 60,},
75 { 96, 160, 80, 144, 108, 172, 92, 156,},
76 { 224, 32, 208, 16, 236, 44, 220, 28,},
79 #define RGB2YUV_SHIFT 15
80 #define BY ( (int) (0.114 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
81 #define BV (-(int) (0.081 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
82 #define BU ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
83 #define GY ( (int) (0.587 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
84 #define GV (-(int) (0.419 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
85 #define GU (-(int) (0.331 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
86 #define RY ( (int) (0.299 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
87 #define RV ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
88 #define RU (-(int) (0.169 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
90 static void fillPlane(uint8_t *plane, int stride, int width, int height, int y,
94 uint8_t *ptr = plane + stride * y;
95 for (i = 0; i < height; i++) {
96 memset(ptr, val, width);
101 static void fill_plane9or10(uint8_t *plane, int stride, int width,
102 int height, int y, uint8_t val,
103 const int dst_depth, const int big_endian)
106 uint16_t *dst = (uint16_t *) (plane + stride * y);
107 #define FILL8TO9_OR_10(wfunc) \
108 for (i = 0; i < height; i++) { \
109 for (j = 0; j < width; j++) { \
110 wfunc(&dst[j], (val << (dst_depth - 8)) | \
111 (val >> (16 - dst_depth))); \
116 FILL8TO9_OR_10(AV_WB16);
118 FILL8TO9_OR_10(AV_WL16);
122 static void copyPlane(const uint8_t *src, int srcStride,
123 int srcSliceY, int srcSliceH, int width,
124 uint8_t *dst, int dstStride)
126 dst += dstStride * srcSliceY;
127 if (dstStride == srcStride && srcStride > 0) {
128 memcpy(dst, src, srcSliceH * dstStride);
131 for (i = 0; i < srcSliceH; i++) {
132 memcpy(dst, src, width);
139 static int planarToNv12Wrapper(SwsContext *c, const uint8_t *src[],
140 int srcStride[], int srcSliceY,
141 int srcSliceH, uint8_t *dstParam[],
144 uint8_t *dst = dstParam[1] + dstStride[1] * srcSliceY / 2;
146 copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,
147 dstParam[0], dstStride[0]);
149 if (c->dstFormat == AV_PIX_FMT_NV12)
150 interleaveBytes(src[1], src[2], dst, c->srcW / 2, srcSliceH / 2,
151 srcStride[1], srcStride[2], dstStride[0]);
153 interleaveBytes(src[2], src[1], dst, c->srcW / 2, srcSliceH / 2,
154 srcStride[2], srcStride[1], dstStride[0]);
159 static int planarToYuy2Wrapper(SwsContext *c, const uint8_t *src[],
160 int srcStride[], int srcSliceY, int srcSliceH,
161 uint8_t *dstParam[], int dstStride[])
163 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
165 yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
166 srcStride[1], dstStride[0]);
171 static int planarToUyvyWrapper(SwsContext *c, const uint8_t *src[],
172 int srcStride[], int srcSliceY, int srcSliceH,
173 uint8_t *dstParam[], int dstStride[])
175 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
177 yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
178 srcStride[1], dstStride[0]);
183 static int yuv422pToYuy2Wrapper(SwsContext *c, const uint8_t *src[],
184 int srcStride[], int srcSliceY, int srcSliceH,
185 uint8_t *dstParam[], int dstStride[])
187 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
189 yuv422ptoyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
190 srcStride[1], dstStride[0]);
195 static int yuv422pToUyvyWrapper(SwsContext *c, const uint8_t *src[],
196 int srcStride[], int srcSliceY, int srcSliceH,
197 uint8_t *dstParam[], int dstStride[])
199 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
201 yuv422ptouyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
202 srcStride[1], dstStride[0]);
207 static int yuyvToYuv420Wrapper(SwsContext *c, const uint8_t *src[],
208 int srcStride[], int srcSliceY, int srcSliceH,
209 uint8_t *dstParam[], int dstStride[])
211 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
212 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY / 2;
213 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY / 2;
215 yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
216 dstStride[1], srcStride[0]);
219 fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
224 static int yuyvToYuv422Wrapper(SwsContext *c, const uint8_t *src[],
225 int srcStride[], int srcSliceY, int srcSliceH,
226 uint8_t *dstParam[], int dstStride[])
228 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
229 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY;
230 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY;
232 yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
233 dstStride[1], srcStride[0]);
238 static int uyvyToYuv420Wrapper(SwsContext *c, const uint8_t *src[],
239 int srcStride[], int srcSliceY, int srcSliceH,
240 uint8_t *dstParam[], int dstStride[])
242 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
243 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY / 2;
244 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY / 2;
246 uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
247 dstStride[1], srcStride[0]);
250 fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
255 static int uyvyToYuv422Wrapper(SwsContext *c, const uint8_t *src[],
256 int srcStride[], int srcSliceY, int srcSliceH,
257 uint8_t *dstParam[], int dstStride[])
259 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
260 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY;
261 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY;
263 uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
264 dstStride[1], srcStride[0]);
269 static void gray8aToPacked32(const uint8_t *src, uint8_t *dst, int num_pixels,
270 const uint8_t *palette)
273 for (i = 0; i < num_pixels; i++)
274 ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i << 1]] | (src[(i << 1) + 1] << 24);
277 static void gray8aToPacked32_1(const uint8_t *src, uint8_t *dst, int num_pixels,
278 const uint8_t *palette)
282 for (i = 0; i < num_pixels; i++)
283 ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i << 1]] | src[(i << 1) + 1];
286 static void gray8aToPacked24(const uint8_t *src, uint8_t *dst, int num_pixels,
287 const uint8_t *palette)
291 for (i = 0; i < num_pixels; i++) {
293 dst[0] = palette[src[i << 1] * 4 + 0];
294 dst[1] = palette[src[i << 1] * 4 + 1];
295 dst[2] = palette[src[i << 1] * 4 + 2];
300 static int packed_16bpc_bswap(SwsContext *c, const uint8_t *src[],
301 int srcStride[], int srcSliceY, int srcSliceH,
302 uint8_t *dst[], int dstStride[])
305 int srcstr = srcStride[0] >> 1;
306 int dststr = dstStride[0] >> 1;
307 uint16_t *dstPtr = (uint16_t *) dst[0];
308 const uint16_t *srcPtr = (const uint16_t *) src[0];
309 int min_stride = FFMIN(srcstr, dststr);
311 for (i = 0; i < srcSliceH; i++) {
312 for (j = 0; j < min_stride; j++) {
313 dstPtr[j] = av_bswap16(srcPtr[j]);
322 static int palToRgbWrapper(SwsContext *c, const uint8_t *src[], int srcStride[],
323 int srcSliceY, int srcSliceH, uint8_t *dst[],
326 const enum AVPixelFormat srcFormat = c->srcFormat;
327 const enum AVPixelFormat dstFormat = c->dstFormat;
328 void (*conv)(const uint8_t *src, uint8_t *dst, int num_pixels,
329 const uint8_t *palette) = NULL;
331 uint8_t *dstPtr = dst[0] + dstStride[0] * srcSliceY;
332 const uint8_t *srcPtr = src[0];
334 if (srcFormat == AV_PIX_FMT_Y400A) {
336 case AV_PIX_FMT_RGB32 : conv = gray8aToPacked32; break;
337 case AV_PIX_FMT_BGR32 : conv = gray8aToPacked32; break;
338 case AV_PIX_FMT_BGR32_1: conv = gray8aToPacked32_1; break;
339 case AV_PIX_FMT_RGB32_1: conv = gray8aToPacked32_1; break;
340 case AV_PIX_FMT_RGB24 : conv = gray8aToPacked24; break;
341 case AV_PIX_FMT_BGR24 : conv = gray8aToPacked24; break;
343 } else if (usePal(srcFormat)) {
345 case AV_PIX_FMT_RGB32 : conv = sws_convertPalette8ToPacked32; break;
346 case AV_PIX_FMT_BGR32 : conv = sws_convertPalette8ToPacked32; break;
347 case AV_PIX_FMT_BGR32_1: conv = sws_convertPalette8ToPacked32; break;
348 case AV_PIX_FMT_RGB32_1: conv = sws_convertPalette8ToPacked32; break;
349 case AV_PIX_FMT_RGB24 : conv = sws_convertPalette8ToPacked24; break;
350 case AV_PIX_FMT_BGR24 : conv = sws_convertPalette8ToPacked24; break;
355 av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
356 sws_format_name(srcFormat), sws_format_name(dstFormat));
358 for (i = 0; i < srcSliceH; i++) {
359 conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);
360 srcPtr += srcStride[0];
361 dstPtr += dstStride[0];
368 static void gbr24ptopacked24(const uint8_t *src[], int srcStride[],
369 uint8_t *dst, int dstStride, int srcSliceH,
373 for (h = 0; h < srcSliceH; h++) {
374 uint8_t *dest = dst + dstStride * h;
375 for (x = 0; x < width; x++) {
381 for (i = 0; i < 3; i++)
382 src[i] += srcStride[i];
386 static void gbr24ptopacked32(const uint8_t *src[], int srcStride[],
387 uint8_t *dst, int dstStride, int srcSliceH,
388 int alpha_first, int width)
391 for (h = 0; h < srcSliceH; h++) {
392 uint8_t *dest = dst + dstStride * h;
395 for (x = 0; x < width; x++) {
402 for (x = 0; x < width; x++) {
410 for (i = 0; i < 3; i++)
411 src[i] += srcStride[i];
415 static int planarRgbToRgbWrapper(SwsContext *c, const uint8_t *src[],
416 int srcStride[], int srcSliceY, int srcSliceH,
417 uint8_t *dst[], int dstStride[])
420 const uint8_t *src102[] = { src[1], src[0], src[2] };
421 const uint8_t *src201[] = { src[2], src[0], src[1] };
422 int stride102[] = { srcStride[1], srcStride[0], srcStride[2] };
423 int stride201[] = { srcStride[2], srcStride[0], srcStride[1] };
425 if (c->srcFormat != AV_PIX_FMT_GBRP) {
426 av_log(c, AV_LOG_ERROR, "unsupported planar RGB conversion %s -> %s\n",
427 av_get_pix_fmt_name(c->srcFormat),
428 av_get_pix_fmt_name(c->dstFormat));
432 switch (c->dstFormat) {
433 case AV_PIX_FMT_BGR24:
434 gbr24ptopacked24(src102, stride102,
435 dst[0] + srcSliceY * dstStride[0], dstStride[0],
439 case AV_PIX_FMT_RGB24:
440 gbr24ptopacked24(src201, stride201,
441 dst[0] + srcSliceY * dstStride[0], dstStride[0],
445 case AV_PIX_FMT_ARGB:
447 case AV_PIX_FMT_RGBA:
448 gbr24ptopacked32(src201, stride201,
449 dst[0] + srcSliceY * dstStride[0], dstStride[0],
450 srcSliceH, alpha_first, c->srcW);
453 case AV_PIX_FMT_ABGR:
455 case AV_PIX_FMT_BGRA:
456 gbr24ptopacked32(src102, stride102,
457 dst[0] + srcSliceY * dstStride[0], dstStride[0],
458 srcSliceH, alpha_first, c->srcW);
462 av_log(c, AV_LOG_ERROR,
463 "unsupported planar RGB conversion %s -> %s\n",
464 av_get_pix_fmt_name(c->srcFormat),
465 av_get_pix_fmt_name(c->dstFormat));
471 #define isRGBA32(x) ( \
472 (x) == AV_PIX_FMT_ARGB \
473 || (x) == AV_PIX_FMT_RGBA \
474 || (x) == AV_PIX_FMT_BGRA \
475 || (x) == AV_PIX_FMT_ABGR \
478 /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */
479 typedef void (* rgbConvFn) (const uint8_t *, uint8_t *, int);
480 static rgbConvFn findRgbConvFn(SwsContext *c)
482 const enum AVPixelFormat srcFormat = c->srcFormat;
483 const enum AVPixelFormat dstFormat = c->dstFormat;
484 const int srcId = c->srcFormatBpp;
485 const int dstId = c->dstFormatBpp;
486 rgbConvFn conv = NULL;
487 const AVPixFmtDescriptor *desc_src = av_pix_fmt_desc_get(srcFormat);
488 const AVPixFmtDescriptor *desc_dst = av_pix_fmt_desc_get(dstFormat);
490 #define IS_NOT_NE(bpp, desc) \
491 (((bpp + 7) >> 3) == 2 && \
492 (!(desc->flags & PIX_FMT_BE) != !HAVE_BIGENDIAN))
494 /* if this is non-native rgb444/555/565, don't handle it here. */
495 if (IS_NOT_NE(srcId, desc_src) || IS_NOT_NE(dstId, desc_dst))
498 #define CONV_IS(src, dst) (srcFormat == AV_PIX_FMT_##src && dstFormat == AV_PIX_FMT_##dst)
500 if (isRGBA32(srcFormat) && isRGBA32(dstFormat)) {
501 if ( CONV_IS(ABGR, RGBA)
502 || CONV_IS(ARGB, BGRA)
503 || CONV_IS(BGRA, ARGB)
504 || CONV_IS(RGBA, ABGR)) conv = shuffle_bytes_3210;
505 else if (CONV_IS(ABGR, ARGB)
506 || CONV_IS(ARGB, ABGR)) conv = shuffle_bytes_0321;
507 else if (CONV_IS(ABGR, BGRA)
508 || CONV_IS(ARGB, RGBA)) conv = shuffle_bytes_1230;
509 else if (CONV_IS(BGRA, RGBA)
510 || CONV_IS(RGBA, BGRA)) conv = shuffle_bytes_2103;
511 else if (CONV_IS(BGRA, ABGR)
512 || CONV_IS(RGBA, ARGB)) conv = shuffle_bytes_3012;
515 if ((isBGRinInt(srcFormat) && isBGRinInt(dstFormat)) ||
516 (isRGBinInt(srcFormat) && isRGBinInt(dstFormat))) {
517 switch (srcId | (dstId << 16)) {
518 case 0x000F000C: conv = rgb12to15; break;
519 case 0x000F0010: conv = rgb16to15; break;
520 case 0x000F0018: conv = rgb24to15; break;
521 case 0x000F0020: conv = rgb32to15; break;
522 case 0x0010000F: conv = rgb15to16; break;
523 case 0x00100018: conv = rgb24to16; break;
524 case 0x00100020: conv = rgb32to16; break;
525 case 0x0018000F: conv = rgb15to24; break;
526 case 0x00180010: conv = rgb16to24; break;
527 case 0x00180020: conv = rgb32to24; break;
528 case 0x0020000F: conv = rgb15to32; break;
529 case 0x00200010: conv = rgb16to32; break;
530 case 0x00200018: conv = rgb24to32; break;
532 } else if ((isBGRinInt(srcFormat) && isRGBinInt(dstFormat)) ||
533 (isRGBinInt(srcFormat) && isBGRinInt(dstFormat))) {
534 switch (srcId | (dstId << 16)) {
535 case 0x000C000C: conv = rgb12tobgr12; break;
536 case 0x000F000F: conv = rgb15tobgr15; break;
537 case 0x000F0010: conv = rgb16tobgr15; break;
538 case 0x000F0018: conv = rgb24tobgr15; break;
539 case 0x000F0020: conv = rgb32tobgr15; break;
540 case 0x0010000F: conv = rgb15tobgr16; break;
541 case 0x00100010: conv = rgb16tobgr16; break;
542 case 0x00100018: conv = rgb24tobgr16; break;
543 case 0x00100020: conv = rgb32tobgr16; break;
544 case 0x0018000F: conv = rgb15tobgr24; break;
545 case 0x00180010: conv = rgb16tobgr24; break;
546 case 0x00180018: conv = rgb24tobgr24; break;
547 case 0x00180020: conv = rgb32tobgr24; break;
548 case 0x0020000F: conv = rgb15tobgr32; break;
549 case 0x00200010: conv = rgb16tobgr32; break;
550 case 0x00200018: conv = rgb24tobgr32; break;
557 /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */
558 static int rgbToRgbWrapper(SwsContext *c, const uint8_t *src[], int srcStride[],
559 int srcSliceY, int srcSliceH, uint8_t *dst[],
563 const enum AVPixelFormat srcFormat = c->srcFormat;
564 const enum AVPixelFormat dstFormat = c->dstFormat;
565 const int srcBpp = (c->srcFormatBpp + 7) >> 3;
566 const int dstBpp = (c->dstFormatBpp + 7) >> 3;
567 rgbConvFn conv = findRgbConvFn(c);
570 av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
571 sws_format_name(srcFormat), sws_format_name(dstFormat));
573 const uint8_t *srcPtr = src[0];
574 uint8_t *dstPtr = dst[0];
575 if ((srcFormat == AV_PIX_FMT_RGB32_1 || srcFormat == AV_PIX_FMT_BGR32_1) &&
576 !isRGBA32(dstFormat))
577 srcPtr += ALT32_CORR;
579 if ((dstFormat == AV_PIX_FMT_RGB32_1 || dstFormat == AV_PIX_FMT_BGR32_1) &&
580 !isRGBA32(srcFormat))
581 dstPtr += ALT32_CORR;
583 if (dstStride[0] * srcBpp == srcStride[0] * dstBpp && srcStride[0] > 0 &&
584 !(srcStride[0] % srcBpp))
585 conv(srcPtr, dstPtr + dstStride[0] * srcSliceY,
586 srcSliceH * srcStride[0]);
589 dstPtr += dstStride[0] * srcSliceY;
591 for (i = 0; i < srcSliceH; i++) {
592 conv(srcPtr, dstPtr, c->srcW * srcBpp);
593 srcPtr += srcStride[0];
594 dstPtr += dstStride[0];
601 static int bgr24ToYv12Wrapper(SwsContext *c, const uint8_t *src[],
602 int srcStride[], int srcSliceY, int srcSliceH,
603 uint8_t *dst[], int dstStride[])
607 dst[0] + srcSliceY * dstStride[0],
608 dst[1] + (srcSliceY >> 1) * dstStride[1],
609 dst[2] + (srcSliceY >> 1) * dstStride[2],
611 dstStride[0], dstStride[1], srcStride[0]);
613 fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
617 static int yvu9ToYv12Wrapper(SwsContext *c, const uint8_t *src[],
618 int srcStride[], int srcSliceY, int srcSliceH,
619 uint8_t *dst[], int dstStride[])
621 copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,
622 dst[0], dstStride[0]);
624 planar2x(src[1], dst[1] + dstStride[1] * (srcSliceY >> 1), c->chrSrcW,
625 srcSliceH >> 2, srcStride[1], dstStride[1]);
626 planar2x(src[2], dst[2] + dstStride[2] * (srcSliceY >> 1), c->chrSrcW,
627 srcSliceH >> 2, srcStride[2], dstStride[2]);
629 fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
633 /* unscaled copy like stuff (assumes nearly identical formats) */
634 static int packedCopyWrapper(SwsContext *c, const uint8_t *src[],
635 int srcStride[], int srcSliceY, int srcSliceH,
636 uint8_t *dst[], int dstStride[])
638 if (dstStride[0] == srcStride[0] && srcStride[0] > 0)
639 memcpy(dst[0] + dstStride[0] * srcSliceY, src[0], srcSliceH * dstStride[0]);
642 const uint8_t *srcPtr = src[0];
643 uint8_t *dstPtr = dst[0] + dstStride[0] * srcSliceY;
646 /* universal length finder */
647 while (length + c->srcW <= FFABS(dstStride[0]) &&
648 length + c->srcW <= FFABS(srcStride[0]))
652 for (i = 0; i < srcSliceH; i++) {
653 memcpy(dstPtr, srcPtr, length);
654 srcPtr += srcStride[0];
655 dstPtr += dstStride[0];
661 #define clip9(x) av_clip_uintp2(x, 9)
662 #define clip10(x) av_clip_uintp2(x, 10)
663 #define DITHER_COPY(dst, dstStride, wfunc, src, srcStride, rfunc, dithers, shift, clip) \
664 for (i = 0; i < height; i++) { \
665 const uint8_t *dither = dithers[i & 7]; \
666 for (j = 0; j < length - 7; j += 8) { \
667 wfunc(&dst[j + 0], clip((rfunc(&src[j + 0]) + dither[0]) >> shift)); \
668 wfunc(&dst[j + 1], clip((rfunc(&src[j + 1]) + dither[1]) >> shift)); \
669 wfunc(&dst[j + 2], clip((rfunc(&src[j + 2]) + dither[2]) >> shift)); \
670 wfunc(&dst[j + 3], clip((rfunc(&src[j + 3]) + dither[3]) >> shift)); \
671 wfunc(&dst[j + 4], clip((rfunc(&src[j + 4]) + dither[4]) >> shift)); \
672 wfunc(&dst[j + 5], clip((rfunc(&src[j + 5]) + dither[5]) >> shift)); \
673 wfunc(&dst[j + 6], clip((rfunc(&src[j + 6]) + dither[6]) >> shift)); \
674 wfunc(&dst[j + 7], clip((rfunc(&src[j + 7]) + dither[7]) >> shift)); \
676 for (; j < length; j++) \
677 wfunc(&dst[j], (rfunc(&src[j]) + dither[j & 7]) >> shift); \
682 static int planarCopyWrapper(SwsContext *c, const uint8_t *src[],
683 int srcStride[], int srcSliceY, int srcSliceH,
684 uint8_t *dst[], int dstStride[])
686 const AVPixFmtDescriptor *desc_src = av_pix_fmt_desc_get(c->srcFormat);
687 const AVPixFmtDescriptor *desc_dst = av_pix_fmt_desc_get(c->dstFormat);
689 for (plane = 0; plane < 4; plane++) {
690 int length = (plane == 0 || plane == 3) ? c->srcW : -((-c->srcW ) >> c->chrDstHSubSample);
691 int y = (plane == 0 || plane == 3) ? srcSliceY: -((-srcSliceY) >> c->chrDstVSubSample);
692 int height = (plane == 0 || plane == 3) ? srcSliceH: -((-srcSliceH) >> c->chrDstVSubSample);
693 const uint8_t *srcPtr = src[plane];
694 uint8_t *dstPtr = dst[plane] + dstStride[plane] * y;
698 // ignore palette for GRAY8
699 if (plane == 1 && !dst[2]) continue;
700 if (!src[plane] || (plane == 1 && !src[2])) {
701 int val = (plane == 3) ? 255 : 128;
702 if (is16BPS(c->dstFormat))
704 if (is9_OR_10BPS(c->dstFormat)) {
705 fill_plane9or10(dst[plane], dstStride[plane],
706 length, height, y, val,
707 desc_dst->comp[plane].depth_minus1 + 1,
710 fillPlane(dst[plane], dstStride[plane], length, height, y,
713 if (is9_OR_10BPS(c->srcFormat)) {
714 const int src_depth = desc_src->comp[plane].depth_minus1 + 1;
715 const int dst_depth = desc_dst->comp[plane].depth_minus1 + 1;
716 const uint16_t *srcPtr2 = (const uint16_t *) srcPtr;
718 if (is16BPS(c->dstFormat)) {
719 uint16_t *dstPtr2 = (uint16_t *) dstPtr;
720 #define COPY9_OR_10TO16(rfunc, wfunc) \
721 for (i = 0; i < height; i++) { \
722 for (j = 0; j < length; j++) { \
723 int srcpx = rfunc(&srcPtr2[j]); \
724 wfunc(&dstPtr2[j], (srcpx << (16 - src_depth)) | (srcpx >> (2 * src_depth - 16))); \
726 dstPtr2 += dstStride[plane] / 2; \
727 srcPtr2 += srcStride[plane] / 2; \
729 if (isBE(c->dstFormat)) {
730 if (isBE(c->srcFormat)) {
731 COPY9_OR_10TO16(AV_RB16, AV_WB16);
733 COPY9_OR_10TO16(AV_RL16, AV_WB16);
736 if (isBE(c->srcFormat)) {
737 COPY9_OR_10TO16(AV_RB16, AV_WL16);
739 COPY9_OR_10TO16(AV_RL16, AV_WL16);
742 } else if (is9_OR_10BPS(c->dstFormat)) {
743 uint16_t *dstPtr2 = (uint16_t *) dstPtr;
744 #define COPY9_OR_10TO9_OR_10(loop) \
745 for (i = 0; i < height; i++) { \
746 for (j = 0; j < length; j++) { \
749 dstPtr2 += dstStride[plane] / 2; \
750 srcPtr2 += srcStride[plane] / 2; \
752 #define COPY9_OR_10TO9_OR_10_2(rfunc, wfunc) \
753 if (dst_depth > src_depth) { \
754 COPY9_OR_10TO9_OR_10(int srcpx = rfunc(&srcPtr2[j]); \
755 wfunc(&dstPtr2[j], (srcpx << 1) | (srcpx >> 9))); \
756 } else if (dst_depth < src_depth) { \
757 DITHER_COPY(dstPtr2, dstStride[plane] / 2, wfunc, \
758 srcPtr2, srcStride[plane] / 2, rfunc, \
759 dither_8x8_1, 1, clip9); \
761 COPY9_OR_10TO9_OR_10(wfunc(&dstPtr2[j], rfunc(&srcPtr2[j]))); \
763 if (isBE(c->dstFormat)) {
764 if (isBE(c->srcFormat)) {
765 COPY9_OR_10TO9_OR_10_2(AV_RB16, AV_WB16);
767 COPY9_OR_10TO9_OR_10_2(AV_RL16, AV_WB16);
770 if (isBE(c->srcFormat)) {
771 COPY9_OR_10TO9_OR_10_2(AV_RB16, AV_WL16);
773 COPY9_OR_10TO9_OR_10_2(AV_RL16, AV_WL16);
777 #define W8(a, b) { *(a) = (b); }
778 #define COPY9_OR_10TO8(rfunc) \
779 if (src_depth == 9) { \
780 DITHER_COPY(dstPtr, dstStride[plane], W8, \
781 srcPtr2, srcStride[plane] / 2, rfunc, \
782 dither_8x8_1, 1, av_clip_uint8); \
784 DITHER_COPY(dstPtr, dstStride[plane], W8, \
785 srcPtr2, srcStride[plane] / 2, rfunc, \
786 dither_8x8_3, 2, av_clip_uint8); \
788 if (isBE(c->srcFormat)) {
789 COPY9_OR_10TO8(AV_RB16);
791 COPY9_OR_10TO8(AV_RL16);
794 } else if (is9_OR_10BPS(c->dstFormat)) {
795 const int dst_depth = desc_dst->comp[plane].depth_minus1 + 1;
796 uint16_t *dstPtr2 = (uint16_t *) dstPtr;
798 if (is16BPS(c->srcFormat)) {
799 const uint16_t *srcPtr2 = (const uint16_t *) srcPtr;
800 #define COPY16TO9_OR_10(rfunc, wfunc) \
801 if (dst_depth == 9) { \
802 DITHER_COPY(dstPtr2, dstStride[plane] / 2, wfunc, \
803 srcPtr2, srcStride[plane] / 2, rfunc, \
804 dither_8x8_128, 7, clip9); \
806 DITHER_COPY(dstPtr2, dstStride[plane] / 2, wfunc, \
807 srcPtr2, srcStride[plane] / 2, rfunc, \
808 dither_8x8_64, 6, clip10); \
810 if (isBE(c->dstFormat)) {
811 if (isBE(c->srcFormat)) {
812 COPY16TO9_OR_10(AV_RB16, AV_WB16);
814 COPY16TO9_OR_10(AV_RL16, AV_WB16);
817 if (isBE(c->srcFormat)) {
818 COPY16TO9_OR_10(AV_RB16, AV_WL16);
820 COPY16TO9_OR_10(AV_RL16, AV_WL16);
824 #define COPY8TO9_OR_10(wfunc) \
825 for (i = 0; i < height; i++) { \
826 for (j = 0; j < length; j++) { \
827 const int srcpx = srcPtr[j]; \
828 wfunc(&dstPtr2[j], (srcpx << (dst_depth - 8)) | (srcpx >> (16 - dst_depth))); \
830 dstPtr2 += dstStride[plane] / 2; \
831 srcPtr += srcStride[plane]; \
833 if (isBE(c->dstFormat)) {
834 COPY8TO9_OR_10(AV_WB16);
836 COPY8TO9_OR_10(AV_WL16);
839 } else if (is16BPS(c->srcFormat) && !is16BPS(c->dstFormat)) {
840 const uint16_t *srcPtr2 = (const uint16_t *) srcPtr;
841 #define COPY16TO8(rfunc) \
842 DITHER_COPY(dstPtr, dstStride[plane], W8, \
843 srcPtr2, srcStride[plane] / 2, rfunc, \
844 dither_8x8_256, 8, av_clip_uint8);
845 if (isBE(c->srcFormat)) {
850 } else if (!is16BPS(c->srcFormat) && is16BPS(c->dstFormat)) {
851 for (i = 0; i < height; i++) {
852 for (j = 0; j < length; j++) {
853 dstPtr[ j << 1 ] = srcPtr[j];
854 dstPtr[(j << 1) + 1] = srcPtr[j];
856 srcPtr += srcStride[plane];
857 dstPtr += dstStride[plane];
859 } else if (is16BPS(c->srcFormat) && is16BPS(c->dstFormat) &&
860 isBE(c->srcFormat) != isBE(c->dstFormat)) {
862 for (i = 0; i < height; i++) {
863 for (j = 0; j < length; j++)
864 ((uint16_t *) dstPtr)[j] = av_bswap16(((const uint16_t *) srcPtr)[j]);
865 srcPtr += srcStride[plane];
866 dstPtr += dstStride[plane];
868 } else if (dstStride[plane] == srcStride[plane] &&
869 srcStride[plane] > 0 && srcStride[plane] == length) {
870 memcpy(dst[plane] + dstStride[plane] * y, src[plane],
871 height * dstStride[plane]);
873 if (is16BPS(c->srcFormat) && is16BPS(c->dstFormat))
875 else if (!desc_src->comp[0].depth_minus1)
876 length >>= 3; // monowhite/black
877 for (i = 0; i < height; i++) {
878 memcpy(dstPtr, srcPtr, length);
879 srcPtr += srcStride[plane];
880 dstPtr += dstStride[plane];
889 #define IS_DIFFERENT_ENDIANESS(src_fmt, dst_fmt, pix_fmt) \
890 ((src_fmt == pix_fmt ## BE && dst_fmt == pix_fmt ## LE) || \
891 (src_fmt == pix_fmt ## LE && dst_fmt == pix_fmt ## BE))
894 void ff_get_unscaled_swscale(SwsContext *c)
896 const enum AVPixelFormat srcFormat = c->srcFormat;
897 const enum AVPixelFormat dstFormat = c->dstFormat;
898 const int flags = c->flags;
899 const int dstH = c->dstH;
902 needsDither = isAnyRGB(dstFormat) &&
903 c->dstFormatBpp < 24 &&
904 (c->dstFormatBpp < c->srcFormatBpp || (!isAnyRGB(srcFormat)));
907 if ((srcFormat == AV_PIX_FMT_YUV420P || srcFormat == AV_PIX_FMT_YUVA420P) &&
908 (dstFormat == AV_PIX_FMT_NV12 || dstFormat == AV_PIX_FMT_NV21)) {
909 c->swScale = planarToNv12Wrapper;
912 if ((srcFormat == AV_PIX_FMT_YUV420P || srcFormat == AV_PIX_FMT_YUV422P ||
913 srcFormat == AV_PIX_FMT_YUVA420P) && isAnyRGB(dstFormat) &&
914 !(flags & SWS_ACCURATE_RND) && !(dstH & 1)) {
915 c->swScale = ff_yuv2rgb_get_func_ptr(c);
918 if (srcFormat == AV_PIX_FMT_YUV410P &&
919 (dstFormat == AV_PIX_FMT_YUV420P || dstFormat == AV_PIX_FMT_YUVA420P) &&
920 !(flags & SWS_BITEXACT)) {
921 c->swScale = yvu9ToYv12Wrapper;
925 if (srcFormat == AV_PIX_FMT_BGR24 &&
926 (dstFormat == AV_PIX_FMT_YUV420P || dstFormat == AV_PIX_FMT_YUVA420P) &&
927 !(flags & SWS_ACCURATE_RND))
928 c->swScale = bgr24ToYv12Wrapper;
930 /* RGB/BGR -> RGB/BGR (no dither needed forms) */
931 if (isAnyRGB(srcFormat) && isAnyRGB(dstFormat) && findRgbConvFn(c)
932 && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))
933 c->swScale= rgbToRgbWrapper;
935 #define isByteRGB(f) ( \
936 f == AV_PIX_FMT_RGB32 || \
937 f == AV_PIX_FMT_RGB32_1 || \
938 f == AV_PIX_FMT_RGB24 || \
939 f == AV_PIX_FMT_BGR32 || \
940 f == AV_PIX_FMT_BGR32_1 || \
941 f == AV_PIX_FMT_BGR24)
943 if (srcFormat == AV_PIX_FMT_GBRP && isPlanar(srcFormat) && isByteRGB(dstFormat))
944 c->swScale = planarRgbToRgbWrapper;
946 /* bswap 16 bits per pixel/component packed formats */
947 if (IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BGR444) ||
948 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BGR48) ||
949 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BGR555) ||
950 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BGR565) ||
951 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_GRAY16) ||
952 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_RGB444) ||
953 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_RGB48) ||
954 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_RGB555) ||
955 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_RGB565))
956 c->swScale = packed_16bpc_bswap;
958 if ((usePal(srcFormat) && (
959 dstFormat == AV_PIX_FMT_RGB32 ||
960 dstFormat == AV_PIX_FMT_RGB32_1 ||
961 dstFormat == AV_PIX_FMT_RGB24 ||
962 dstFormat == AV_PIX_FMT_BGR32 ||
963 dstFormat == AV_PIX_FMT_BGR32_1 ||
964 dstFormat == AV_PIX_FMT_BGR24)))
965 c->swScale = palToRgbWrapper;
967 if (srcFormat == AV_PIX_FMT_YUV422P) {
968 if (dstFormat == AV_PIX_FMT_YUYV422)
969 c->swScale = yuv422pToYuy2Wrapper;
970 else if (dstFormat == AV_PIX_FMT_UYVY422)
971 c->swScale = yuv422pToUyvyWrapper;
974 /* LQ converters if -sws 0 or -sws 4*/
975 if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)) {
977 if (srcFormat == AV_PIX_FMT_YUV420P || srcFormat == AV_PIX_FMT_YUVA420P) {
978 if (dstFormat == AV_PIX_FMT_YUYV422)
979 c->swScale = planarToYuy2Wrapper;
980 else if (dstFormat == AV_PIX_FMT_UYVY422)
981 c->swScale = planarToUyvyWrapper;
984 if (srcFormat == AV_PIX_FMT_YUYV422 &&
985 (dstFormat == AV_PIX_FMT_YUV420P || dstFormat == AV_PIX_FMT_YUVA420P))
986 c->swScale = yuyvToYuv420Wrapper;
987 if (srcFormat == AV_PIX_FMT_UYVY422 &&
988 (dstFormat == AV_PIX_FMT_YUV420P || dstFormat == AV_PIX_FMT_YUVA420P))
989 c->swScale = uyvyToYuv420Wrapper;
990 if (srcFormat == AV_PIX_FMT_YUYV422 && dstFormat == AV_PIX_FMT_YUV422P)
991 c->swScale = yuyvToYuv422Wrapper;
992 if (srcFormat == AV_PIX_FMT_UYVY422 && dstFormat == AV_PIX_FMT_YUV422P)
993 c->swScale = uyvyToYuv422Wrapper;
996 if ( srcFormat == dstFormat ||
997 (srcFormat == AV_PIX_FMT_YUVA420P && dstFormat == AV_PIX_FMT_YUV420P) ||
998 (srcFormat == AV_PIX_FMT_YUV420P && dstFormat == AV_PIX_FMT_YUVA420P) ||
999 (isPlanarYUV(srcFormat) && isGray(dstFormat)) ||
1000 (isPlanarYUV(dstFormat) && isGray(srcFormat)) ||
1001 (isGray(dstFormat) && isGray(srcFormat)) ||
1002 (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat) &&
1003 c->chrDstHSubSample == c->chrSrcHSubSample &&
1004 c->chrDstVSubSample == c->chrSrcVSubSample &&
1005 dstFormat != AV_PIX_FMT_NV12 && dstFormat != AV_PIX_FMT_NV21 &&
1006 srcFormat != AV_PIX_FMT_NV12 && srcFormat != AV_PIX_FMT_NV21))
1008 if (isPacked(c->srcFormat))
1009 c->swScale = packedCopyWrapper;
1010 else /* Planar YUV or gray */
1011 c->swScale = planarCopyWrapper;
1015 ff_bfin_get_unscaled_swscale(c);
1017 ff_swscale_get_unscaled_altivec(c);
1020 static void reset_ptr(const uint8_t *src[], int format)
1022 if (!isALPHA(format))
1024 if (!isPlanar(format)) {
1025 src[3] = src[2] = NULL;
1027 if (!usePal(format))
1032 static int check_image_pointers(uint8_t *data[4], enum AVPixelFormat pix_fmt,
1033 const int linesizes[4])
1035 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
1038 for (i = 0; i < 4; i++) {
1039 int plane = desc->comp[i].plane;
1040 if (!data[plane] || !linesizes[plane])
1048 * swscale wrapper, so we don't need to export the SwsContext.
1049 * Assumes planar YUV to be in YUV order instead of YVU.
1051 int attribute_align_arg sws_scale(struct SwsContext *c,
1052 const uint8_t * const srcSlice[],
1053 const int srcStride[], int srcSliceY,
1054 int srcSliceH, uint8_t *const dst[],
1055 const int dstStride[])
1058 const uint8_t *src2[4] = { srcSlice[0], srcSlice[1], srcSlice[2], srcSlice[3] };
1059 uint8_t *dst2[4] = { dst[0], dst[1], dst[2], dst[3] };
1061 // do not mess up sliceDir if we have a "trailing" 0-size slice
1065 if (!check_image_pointers(srcSlice, c->srcFormat, srcStride)) {
1066 av_log(c, AV_LOG_ERROR, "bad src image pointers\n");
1069 if (!check_image_pointers(dst, c->dstFormat, dstStride)) {
1070 av_log(c, AV_LOG_ERROR, "bad dst image pointers\n");
1074 if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
1075 av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");
1078 if (c->sliceDir == 0) {
1079 if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;
1082 if (usePal(c->srcFormat)) {
1083 for (i = 0; i < 256; i++) {
1084 int p, r, g, b, y, u, v;
1085 if (c->srcFormat == AV_PIX_FMT_PAL8) {
1086 p = ((const uint32_t *)(srcSlice[1]))[i];
1087 r = (p >> 16) & 0xFF;
1088 g = (p >> 8) & 0xFF;
1090 } else if (c->srcFormat == AV_PIX_FMT_RGB8) {
1091 r = ( i >> 5 ) * 36;
1092 g = ((i >> 2) & 7) * 36;
1094 } else if (c->srcFormat == AV_PIX_FMT_BGR8) {
1095 b = ( i >> 6 ) * 85;
1096 g = ((i >> 3) & 7) * 36;
1098 } else if (c->srcFormat == AV_PIX_FMT_RGB4_BYTE) {
1099 r = ( i >> 3 ) * 255;
1100 g = ((i >> 1) & 3) * 85;
1102 } else if (c->srcFormat == AV_PIX_FMT_GRAY8 ||
1103 c->srcFormat == AV_PIX_FMT_Y400A) {
1106 assert(c->srcFormat == AV_PIX_FMT_BGR4_BYTE);
1107 b = ( i >> 3 ) * 255;
1108 g = ((i >> 1) & 3) * 85;
1111 y = av_clip_uint8((RY * r + GY * g + BY * b + ( 33 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
1112 u = av_clip_uint8((RU * r + GU * g + BU * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
1113 v = av_clip_uint8((RV * r + GV * g + BV * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
1114 c->pal_yuv[i] = y + (u << 8) + (v << 16);
1116 switch (c->dstFormat) {
1117 case AV_PIX_FMT_BGR32:
1119 case AV_PIX_FMT_RGB24:
1121 c->pal_rgb[i] = r + (g << 8) + (b << 16);
1123 case AV_PIX_FMT_BGR32_1:
1125 case AV_PIX_FMT_BGR24:
1127 c->pal_rgb[i] = (r + (g << 8) + (b << 16)) << 8;
1129 case AV_PIX_FMT_RGB32_1:
1131 case AV_PIX_FMT_RGB24:
1133 c->pal_rgb[i] = (b + (g << 8) + (r << 16)) << 8;
1135 case AV_PIX_FMT_RGB32:
1137 case AV_PIX_FMT_BGR24:
1140 c->pal_rgb[i] = b + (g << 8) + (r << 16);
1145 // copy strides, so they can safely be modified
1146 if (c->sliceDir == 1) {
1147 // slices go from top to bottom
1148 int srcStride2[4] = { srcStride[0], srcStride[1], srcStride[2],
1150 int dstStride2[4] = { dstStride[0], dstStride[1], dstStride[2],
1153 reset_ptr(src2, c->srcFormat);
1154 reset_ptr((const uint8_t **) dst2, c->dstFormat);
1156 /* reset slice direction at end of frame */
1157 if (srcSliceY + srcSliceH == c->srcH)
1160 return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2,
1163 // slices go from bottom to top => we flip the image internally
1164 int srcStride2[4] = { -srcStride[0], -srcStride[1], -srcStride[2],
1166 int dstStride2[4] = { -dstStride[0], -dstStride[1], -dstStride[2],
1169 src2[0] += (srcSliceH - 1) * srcStride[0];
1170 if (!usePal(c->srcFormat))
1171 src2[1] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[1];
1172 src2[2] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[2];
1173 src2[3] += (srcSliceH - 1) * srcStride[3];
1174 dst2[0] += ( c->dstH - 1) * dstStride[0];
1175 dst2[1] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[1];
1176 dst2[2] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[2];
1177 dst2[3] += ( c->dstH - 1) * dstStride[3];
1179 reset_ptr(src2, c->srcFormat);
1180 reset_ptr((const uint8_t **) dst2, c->dstFormat);
1182 /* reset slice direction at end of frame */
1186 return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH,
1187 srcSliceH, dst2, dstStride2);
1191 /* Convert the palette to the same packed 32-bit format as the palette */
1192 void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst,
1193 int num_pixels, const uint8_t *palette)
1197 for (i = 0; i < num_pixels; i++)
1198 ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i]];
1201 /* Palette format: ABCD -> dst format: ABC */
1202 void sws_convertPalette8ToPacked24(const uint8_t *src, uint8_t *dst,
1203 int num_pixels, const uint8_t *palette)
1207 for (i = 0; i < num_pixels; i++) {
1209 dst[0] = palette[src[i] * 4 + 0];
1210 dst[1] = palette[src[i] * 4 + 1];
1211 dst[2] = palette[src[i] * 4 + 2];