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 copyPlane(const uint8_t *src, int srcStride,
102 int srcSliceY, int srcSliceH, int width,
103 uint8_t *dst, int dstStride)
105 dst += dstStride * srcSliceY;
106 if (dstStride == srcStride && srcStride > 0) {
107 memcpy(dst, src, srcSliceH * dstStride);
110 for (i = 0; i < srcSliceH; i++) {
111 memcpy(dst, src, width);
118 static int planarToNv12Wrapper(SwsContext *c, const uint8_t *src[],
119 int srcStride[], int srcSliceY,
120 int srcSliceH, uint8_t *dstParam[],
123 uint8_t *dst = dstParam[1] + dstStride[1] * srcSliceY / 2;
125 copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,
126 dstParam[0], dstStride[0]);
128 if (c->dstFormat == AV_PIX_FMT_NV12)
129 interleaveBytes(src[1], src[2], dst, c->srcW / 2, srcSliceH / 2,
130 srcStride[1], srcStride[2], dstStride[0]);
132 interleaveBytes(src[2], src[1], dst, c->srcW / 2, srcSliceH / 2,
133 srcStride[2], srcStride[1], dstStride[0]);
138 static int planarToYuy2Wrapper(SwsContext *c, const uint8_t *src[],
139 int srcStride[], int srcSliceY, int srcSliceH,
140 uint8_t *dstParam[], int dstStride[])
142 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
144 yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
145 srcStride[1], dstStride[0]);
150 static int planarToUyvyWrapper(SwsContext *c, const uint8_t *src[],
151 int srcStride[], int srcSliceY, int srcSliceH,
152 uint8_t *dstParam[], int dstStride[])
154 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
156 yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
157 srcStride[1], dstStride[0]);
162 static int yuv422pToYuy2Wrapper(SwsContext *c, const uint8_t *src[],
163 int srcStride[], int srcSliceY, int srcSliceH,
164 uint8_t *dstParam[], int dstStride[])
166 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
168 yuv422ptoyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
169 srcStride[1], dstStride[0]);
174 static int yuv422pToUyvyWrapper(SwsContext *c, const uint8_t *src[],
175 int srcStride[], int srcSliceY, int srcSliceH,
176 uint8_t *dstParam[], int dstStride[])
178 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
180 yuv422ptouyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
181 srcStride[1], dstStride[0]);
186 static int yuyvToYuv420Wrapper(SwsContext *c, const uint8_t *src[],
187 int srcStride[], int srcSliceY, int srcSliceH,
188 uint8_t *dstParam[], int dstStride[])
190 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
191 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY / 2;
192 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY / 2;
194 yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
195 dstStride[1], srcStride[0]);
198 fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
203 static int yuyvToYuv422Wrapper(SwsContext *c, const uint8_t *src[],
204 int srcStride[], int srcSliceY, int srcSliceH,
205 uint8_t *dstParam[], int dstStride[])
207 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
208 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY;
209 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY;
211 yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
212 dstStride[1], srcStride[0]);
217 static int uyvyToYuv420Wrapper(SwsContext *c, const uint8_t *src[],
218 int srcStride[], int srcSliceY, int srcSliceH,
219 uint8_t *dstParam[], int dstStride[])
221 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
222 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY / 2;
223 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY / 2;
225 uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
226 dstStride[1], srcStride[0]);
229 fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
234 static int uyvyToYuv422Wrapper(SwsContext *c, const uint8_t *src[],
235 int srcStride[], int srcSliceY, int srcSliceH,
236 uint8_t *dstParam[], int dstStride[])
238 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
239 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY;
240 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY;
242 uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
243 dstStride[1], srcStride[0]);
248 static void gray8aToPacked32(const uint8_t *src, uint8_t *dst, int num_pixels,
249 const uint8_t *palette)
252 for (i = 0; i < num_pixels; i++)
253 ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i << 1]] | (src[(i << 1) + 1] << 24);
256 static void gray8aToPacked32_1(const uint8_t *src, uint8_t *dst, int num_pixels,
257 const uint8_t *palette)
261 for (i = 0; i < num_pixels; i++)
262 ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i << 1]] | src[(i << 1) + 1];
265 static void gray8aToPacked24(const uint8_t *src, uint8_t *dst, int num_pixels,
266 const uint8_t *palette)
270 for (i = 0; i < num_pixels; i++) {
272 dst[0] = palette[src[i << 1] * 4 + 0];
273 dst[1] = palette[src[i << 1] * 4 + 1];
274 dst[2] = palette[src[i << 1] * 4 + 2];
279 static int packed_16bpc_bswap(SwsContext *c, const uint8_t *src[],
280 int srcStride[], int srcSliceY, int srcSliceH,
281 uint8_t *dst[], int dstStride[])
284 int srcstr = srcStride[0] >> 1;
285 int dststr = dstStride[0] >> 1;
286 uint16_t *dstPtr = (uint16_t *) dst[0];
287 const uint16_t *srcPtr = (const uint16_t *) src[0];
288 int min_stride = FFMIN(srcstr, dststr);
290 for (i = 0; i < srcSliceH; i++) {
291 for (j = 0; j < min_stride; j++) {
292 dstPtr[j] = av_bswap16(srcPtr[j]);
301 static int palToRgbWrapper(SwsContext *c, const uint8_t *src[], int srcStride[],
302 int srcSliceY, int srcSliceH, uint8_t *dst[],
305 const enum AVPixelFormat srcFormat = c->srcFormat;
306 const enum AVPixelFormat dstFormat = c->dstFormat;
307 void (*conv)(const uint8_t *src, uint8_t *dst, int num_pixels,
308 const uint8_t *palette) = NULL;
310 uint8_t *dstPtr = dst[0] + dstStride[0] * srcSliceY;
311 const uint8_t *srcPtr = src[0];
313 if (srcFormat == AV_PIX_FMT_Y400A) {
315 case AV_PIX_FMT_RGB32 : conv = gray8aToPacked32; break;
316 case AV_PIX_FMT_BGR32 : conv = gray8aToPacked32; break;
317 case AV_PIX_FMT_BGR32_1: conv = gray8aToPacked32_1; break;
318 case AV_PIX_FMT_RGB32_1: conv = gray8aToPacked32_1; break;
319 case AV_PIX_FMT_RGB24 : conv = gray8aToPacked24; break;
320 case AV_PIX_FMT_BGR24 : conv = gray8aToPacked24; break;
322 } else if (usePal(srcFormat)) {
324 case AV_PIX_FMT_RGB32 : conv = sws_convertPalette8ToPacked32; break;
325 case AV_PIX_FMT_BGR32 : conv = sws_convertPalette8ToPacked32; break;
326 case AV_PIX_FMT_BGR32_1: conv = sws_convertPalette8ToPacked32; break;
327 case AV_PIX_FMT_RGB32_1: conv = sws_convertPalette8ToPacked32; break;
328 case AV_PIX_FMT_RGB24 : conv = sws_convertPalette8ToPacked24; break;
329 case AV_PIX_FMT_BGR24 : conv = sws_convertPalette8ToPacked24; break;
334 av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
335 sws_format_name(srcFormat), sws_format_name(dstFormat));
337 for (i = 0; i < srcSliceH; i++) {
338 conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);
339 srcPtr += srcStride[0];
340 dstPtr += dstStride[0];
347 static void gbr24ptopacked24(const uint8_t *src[], int srcStride[],
348 uint8_t *dst, int dstStride, int srcSliceH,
352 for (h = 0; h < srcSliceH; h++) {
353 uint8_t *dest = dst + dstStride * h;
354 for (x = 0; x < width; x++) {
360 for (i = 0; i < 3; i++)
361 src[i] += srcStride[i];
365 static void gbr24ptopacked32(const uint8_t *src[], int srcStride[],
366 uint8_t *dst, int dstStride, int srcSliceH,
367 int alpha_first, int width)
370 for (h = 0; h < srcSliceH; h++) {
371 uint8_t *dest = dst + dstStride * h;
374 for (x = 0; x < width; x++) {
381 for (x = 0; x < width; x++) {
389 for (i = 0; i < 3; i++)
390 src[i] += srcStride[i];
394 static int planarRgbToRgbWrapper(SwsContext *c, const uint8_t *src[],
395 int srcStride[], int srcSliceY, int srcSliceH,
396 uint8_t *dst[], int dstStride[])
399 if (c->srcFormat != AV_PIX_FMT_GBRP) {
400 av_log(c, AV_LOG_ERROR, "unsupported planar RGB conversion %s -> %s\n",
401 av_get_pix_fmt_name(c->srcFormat),
402 av_get_pix_fmt_name(c->dstFormat));
406 switch (c->dstFormat) {
407 case AV_PIX_FMT_BGR24:
408 gbr24ptopacked24((const uint8_t *[]) { src[1], src[0], src[2] },
409 (int []) { srcStride[1], srcStride[0], srcStride[2] },
410 dst[0] + srcSliceY * dstStride[0], dstStride[0],
414 case AV_PIX_FMT_RGB24:
415 gbr24ptopacked24((const uint8_t *[]) { src[2], src[0], src[1] },
416 (int []) { srcStride[2], srcStride[0], srcStride[1] },
417 dst[0] + srcSliceY * dstStride[0], dstStride[0],
421 case AV_PIX_FMT_ARGB:
423 case AV_PIX_FMT_RGBA:
424 gbr24ptopacked32((const uint8_t *[]) { src[2], src[0], src[1] },
425 (int []) { srcStride[2], srcStride[0], srcStride[1] },
426 dst[0] + srcSliceY * dstStride[0], dstStride[0],
427 srcSliceH, alpha_first, c->srcW);
430 case AV_PIX_FMT_ABGR:
432 case AV_PIX_FMT_BGRA:
433 gbr24ptopacked32((const uint8_t *[]) { src[1], src[0], src[2] },
434 (int []) { srcStride[1], srcStride[0], srcStride[2] },
435 dst[0] + srcSliceY * dstStride[0], dstStride[0],
436 srcSliceH, alpha_first, c->srcW);
440 av_log(c, AV_LOG_ERROR,
441 "unsupported planar RGB conversion %s -> %s\n",
442 av_get_pix_fmt_name(c->srcFormat),
443 av_get_pix_fmt_name(c->dstFormat));
449 #define isRGBA32(x) ( \
450 (x) == AV_PIX_FMT_ARGB \
451 || (x) == AV_PIX_FMT_RGBA \
452 || (x) == AV_PIX_FMT_BGRA \
453 || (x) == AV_PIX_FMT_ABGR \
456 /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */
457 typedef void (* rgbConvFn) (const uint8_t *, uint8_t *, int);
458 static rgbConvFn findRgbConvFn(SwsContext *c)
460 const enum AVPixelFormat srcFormat = c->srcFormat;
461 const enum AVPixelFormat dstFormat = c->dstFormat;
462 const int srcId = c->srcFormatBpp;
463 const int dstId = c->dstFormatBpp;
464 rgbConvFn conv = NULL;
465 const AVPixFmtDescriptor *desc_src = av_pix_fmt_desc_get(srcFormat);
466 const AVPixFmtDescriptor *desc_dst = av_pix_fmt_desc_get(dstFormat);
468 #define IS_NOT_NE(bpp, desc) \
469 (((bpp + 7) >> 3) == 2 && \
470 (!(desc->flags & PIX_FMT_BE) != !HAVE_BIGENDIAN))
472 /* if this is non-native rgb444/555/565, don't handle it here. */
473 if (IS_NOT_NE(srcId, desc_src) || IS_NOT_NE(dstId, desc_dst))
476 #define CONV_IS(src, dst) (srcFormat == AV_PIX_FMT_##src && dstFormat == AV_PIX_FMT_##dst)
478 if (isRGBA32(srcFormat) && isRGBA32(dstFormat)) {
479 if ( CONV_IS(ABGR, RGBA)
480 || CONV_IS(ARGB, BGRA)
481 || CONV_IS(BGRA, ARGB)
482 || CONV_IS(RGBA, ABGR)) conv = shuffle_bytes_3210;
483 else if (CONV_IS(ABGR, ARGB)
484 || CONV_IS(ARGB, ABGR)) conv = shuffle_bytes_0321;
485 else if (CONV_IS(ABGR, BGRA)
486 || CONV_IS(ARGB, RGBA)) conv = shuffle_bytes_1230;
487 else if (CONV_IS(BGRA, RGBA)
488 || CONV_IS(RGBA, BGRA)) conv = shuffle_bytes_2103;
489 else if (CONV_IS(BGRA, ABGR)
490 || CONV_IS(RGBA, ARGB)) conv = shuffle_bytes_3012;
493 if ((isBGRinInt(srcFormat) && isBGRinInt(dstFormat)) ||
494 (isRGBinInt(srcFormat) && isRGBinInt(dstFormat))) {
495 switch (srcId | (dstId << 16)) {
496 case 0x000F000C: conv = rgb12to15; break;
497 case 0x000F0010: conv = rgb16to15; break;
498 case 0x000F0018: conv = rgb24to15; break;
499 case 0x000F0020: conv = rgb32to15; break;
500 case 0x0010000F: conv = rgb15to16; break;
501 case 0x00100018: conv = rgb24to16; break;
502 case 0x00100020: conv = rgb32to16; break;
503 case 0x0018000F: conv = rgb15to24; break;
504 case 0x00180010: conv = rgb16to24; break;
505 case 0x00180020: conv = rgb32to24; break;
506 case 0x0020000F: conv = rgb15to32; break;
507 case 0x00200010: conv = rgb16to32; break;
508 case 0x00200018: conv = rgb24to32; break;
510 } else if ((isBGRinInt(srcFormat) && isRGBinInt(dstFormat)) ||
511 (isRGBinInt(srcFormat) && isBGRinInt(dstFormat))) {
512 switch (srcId | (dstId << 16)) {
513 case 0x000C000C: conv = rgb12tobgr12; break;
514 case 0x000F000F: conv = rgb15tobgr15; break;
515 case 0x000F0010: conv = rgb16tobgr15; break;
516 case 0x000F0018: conv = rgb24tobgr15; break;
517 case 0x000F0020: conv = rgb32tobgr15; break;
518 case 0x0010000F: conv = rgb15tobgr16; break;
519 case 0x00100010: conv = rgb16tobgr16; break;
520 case 0x00100018: conv = rgb24tobgr16; break;
521 case 0x00100020: conv = rgb32tobgr16; break;
522 case 0x0018000F: conv = rgb15tobgr24; break;
523 case 0x00180010: conv = rgb16tobgr24; break;
524 case 0x00180018: conv = rgb24tobgr24; break;
525 case 0x00180020: conv = rgb32tobgr24; break;
526 case 0x0020000F: conv = rgb15tobgr32; break;
527 case 0x00200010: conv = rgb16tobgr32; break;
528 case 0x00200018: conv = rgb24tobgr32; break;
535 /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */
536 static int rgbToRgbWrapper(SwsContext *c, const uint8_t *src[], int srcStride[],
537 int srcSliceY, int srcSliceH, uint8_t *dst[],
541 const enum AVPixelFormat srcFormat = c->srcFormat;
542 const enum AVPixelFormat dstFormat = c->dstFormat;
543 const int srcBpp = (c->srcFormatBpp + 7) >> 3;
544 const int dstBpp = (c->dstFormatBpp + 7) >> 3;
545 rgbConvFn conv = findRgbConvFn(c);
548 av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
549 sws_format_name(srcFormat), sws_format_name(dstFormat));
551 const uint8_t *srcPtr = src[0];
552 uint8_t *dstPtr = dst[0];
553 if ((srcFormat == AV_PIX_FMT_RGB32_1 || srcFormat == AV_PIX_FMT_BGR32_1) &&
554 !isRGBA32(dstFormat))
555 srcPtr += ALT32_CORR;
557 if ((dstFormat == AV_PIX_FMT_RGB32_1 || dstFormat == AV_PIX_FMT_BGR32_1) &&
558 !isRGBA32(srcFormat))
559 dstPtr += ALT32_CORR;
561 if (dstStride[0] * srcBpp == srcStride[0] * dstBpp && srcStride[0] > 0 &&
562 !(srcStride[0] % srcBpp))
563 conv(srcPtr, dstPtr + dstStride[0] * srcSliceY,
564 srcSliceH * srcStride[0]);
567 dstPtr += dstStride[0] * srcSliceY;
569 for (i = 0; i < srcSliceH; i++) {
570 conv(srcPtr, dstPtr, c->srcW * srcBpp);
571 srcPtr += srcStride[0];
572 dstPtr += dstStride[0];
579 static int bgr24ToYv12Wrapper(SwsContext *c, const uint8_t *src[],
580 int srcStride[], int srcSliceY, int srcSliceH,
581 uint8_t *dst[], int dstStride[])
585 dst[0] + srcSliceY * dstStride[0],
586 dst[1] + (srcSliceY >> 1) * dstStride[1],
587 dst[2] + (srcSliceY >> 1) * dstStride[2],
589 dstStride[0], dstStride[1], srcStride[0]);
591 fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
595 static int yvu9ToYv12Wrapper(SwsContext *c, const uint8_t *src[],
596 int srcStride[], int srcSliceY, int srcSliceH,
597 uint8_t *dst[], int dstStride[])
599 copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,
600 dst[0], dstStride[0]);
602 planar2x(src[1], dst[1] + dstStride[1] * (srcSliceY >> 1), c->chrSrcW,
603 srcSliceH >> 2, srcStride[1], dstStride[1]);
604 planar2x(src[2], dst[2] + dstStride[2] * (srcSliceY >> 1), c->chrSrcW,
605 srcSliceH >> 2, srcStride[2], dstStride[2]);
607 fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
611 /* unscaled copy like stuff (assumes nearly identical formats) */
612 static int packedCopyWrapper(SwsContext *c, const uint8_t *src[],
613 int srcStride[], int srcSliceY, int srcSliceH,
614 uint8_t *dst[], int dstStride[])
616 if (dstStride[0] == srcStride[0] && srcStride[0] > 0)
617 memcpy(dst[0] + dstStride[0] * srcSliceY, src[0], srcSliceH * dstStride[0]);
620 const uint8_t *srcPtr = src[0];
621 uint8_t *dstPtr = dst[0] + dstStride[0] * srcSliceY;
624 /* universal length finder */
625 while (length + c->srcW <= FFABS(dstStride[0]) &&
626 length + c->srcW <= FFABS(srcStride[0]))
630 for (i = 0; i < srcSliceH; i++) {
631 memcpy(dstPtr, srcPtr, length);
632 srcPtr += srcStride[0];
633 dstPtr += dstStride[0];
639 #define clip9(x) av_clip_uintp2(x, 9)
640 #define clip10(x) av_clip_uintp2(x, 10)
641 #define DITHER_COPY(dst, dstStride, wfunc, src, srcStride, rfunc, dithers, shift, clip) \
642 for (i = 0; i < height; i++) { \
643 const uint8_t *dither = dithers[i & 7]; \
644 for (j = 0; j < length - 7; j += 8) { \
645 wfunc(&dst[j + 0], clip((rfunc(&src[j + 0]) + dither[0]) >> shift)); \
646 wfunc(&dst[j + 1], clip((rfunc(&src[j + 1]) + dither[1]) >> shift)); \
647 wfunc(&dst[j + 2], clip((rfunc(&src[j + 2]) + dither[2]) >> shift)); \
648 wfunc(&dst[j + 3], clip((rfunc(&src[j + 3]) + dither[3]) >> shift)); \
649 wfunc(&dst[j + 4], clip((rfunc(&src[j + 4]) + dither[4]) >> shift)); \
650 wfunc(&dst[j + 5], clip((rfunc(&src[j + 5]) + dither[5]) >> shift)); \
651 wfunc(&dst[j + 6], clip((rfunc(&src[j + 6]) + dither[6]) >> shift)); \
652 wfunc(&dst[j + 7], clip((rfunc(&src[j + 7]) + dither[7]) >> shift)); \
654 for (; j < length; j++) \
655 wfunc(&dst[j], (rfunc(&src[j]) + dither[j & 7]) >> shift); \
660 static int planarCopyWrapper(SwsContext *c, const uint8_t *src[],
661 int srcStride[], int srcSliceY, int srcSliceH,
662 uint8_t *dst[], int dstStride[])
664 const AVPixFmtDescriptor *desc_src = av_pix_fmt_desc_get(c->srcFormat);
665 const AVPixFmtDescriptor *desc_dst = av_pix_fmt_desc_get(c->dstFormat);
667 for (plane = 0; plane < 4; plane++) {
668 int length = (plane == 0 || plane == 3) ? c->srcW : -((-c->srcW ) >> c->chrDstHSubSample);
669 int y = (plane == 0 || plane == 3) ? srcSliceY: -((-srcSliceY) >> c->chrDstVSubSample);
670 int height = (plane == 0 || plane == 3) ? srcSliceH: -((-srcSliceH) >> c->chrDstVSubSample);
671 const uint8_t *srcPtr = src[plane];
672 uint8_t *dstPtr = dst[plane] + dstStride[plane] * y;
676 // ignore palette for GRAY8
677 if (plane == 1 && !dst[2]) continue;
678 if (!src[plane] || (plane == 1 && !src[2])) {
679 if (is16BPS(c->dstFormat))
681 fillPlane(dst[plane], dstStride[plane], length, height, y,
682 (plane == 3) ? 255 : 128);
684 if (is9_OR_10BPS(c->srcFormat)) {
685 const int src_depth = desc_src->comp[plane].depth_minus1 + 1;
686 const int dst_depth = desc_dst->comp[plane].depth_minus1 + 1;
687 const uint16_t *srcPtr2 = (const uint16_t *) srcPtr;
689 if (is16BPS(c->dstFormat)) {
690 uint16_t *dstPtr2 = (uint16_t *) dstPtr;
691 #define COPY9_OR_10TO16(rfunc, wfunc) \
692 for (i = 0; i < height; i++) { \
693 for (j = 0; j < length; j++) { \
694 int srcpx = rfunc(&srcPtr2[j]); \
695 wfunc(&dstPtr2[j], (srcpx << (16 - src_depth)) | (srcpx >> (2 * src_depth - 16))); \
697 dstPtr2 += dstStride[plane] / 2; \
698 srcPtr2 += srcStride[plane] / 2; \
700 if (isBE(c->dstFormat)) {
701 if (isBE(c->srcFormat)) {
702 COPY9_OR_10TO16(AV_RB16, AV_WB16);
704 COPY9_OR_10TO16(AV_RL16, AV_WB16);
707 if (isBE(c->srcFormat)) {
708 COPY9_OR_10TO16(AV_RB16, AV_WL16);
710 COPY9_OR_10TO16(AV_RL16, AV_WL16);
713 } else if (is9_OR_10BPS(c->dstFormat)) {
714 uint16_t *dstPtr2 = (uint16_t *) dstPtr;
715 #define COPY9_OR_10TO9_OR_10(loop) \
716 for (i = 0; i < height; i++) { \
717 for (j = 0; j < length; j++) { \
720 dstPtr2 += dstStride[plane] / 2; \
721 srcPtr2 += srcStride[plane] / 2; \
723 #define COPY9_OR_10TO9_OR_10_2(rfunc, wfunc) \
724 if (dst_depth > src_depth) { \
725 COPY9_OR_10TO9_OR_10(int srcpx = rfunc(&srcPtr2[j]); \
726 wfunc(&dstPtr2[j], (srcpx << 1) | (srcpx >> 9))); \
727 } else if (dst_depth < src_depth) { \
728 DITHER_COPY(dstPtr2, dstStride[plane] / 2, wfunc, \
729 srcPtr2, srcStride[plane] / 2, rfunc, \
730 dither_8x8_1, 1, clip9); \
732 COPY9_OR_10TO9_OR_10(wfunc(&dstPtr2[j], rfunc(&srcPtr2[j]))); \
734 if (isBE(c->dstFormat)) {
735 if (isBE(c->srcFormat)) {
736 COPY9_OR_10TO9_OR_10_2(AV_RB16, AV_WB16);
738 COPY9_OR_10TO9_OR_10_2(AV_RL16, AV_WB16);
741 if (isBE(c->srcFormat)) {
742 COPY9_OR_10TO9_OR_10_2(AV_RB16, AV_WL16);
744 COPY9_OR_10TO9_OR_10_2(AV_RL16, AV_WL16);
748 #define W8(a, b) { *(a) = (b); }
749 #define COPY9_OR_10TO8(rfunc) \
750 if (src_depth == 9) { \
751 DITHER_COPY(dstPtr, dstStride[plane], W8, \
752 srcPtr2, srcStride[plane] / 2, rfunc, \
753 dither_8x8_1, 1, av_clip_uint8); \
755 DITHER_COPY(dstPtr, dstStride[plane], W8, \
756 srcPtr2, srcStride[plane] / 2, rfunc, \
757 dither_8x8_3, 2, av_clip_uint8); \
759 if (isBE(c->srcFormat)) {
760 COPY9_OR_10TO8(AV_RB16);
762 COPY9_OR_10TO8(AV_RL16);
765 } else if (is9_OR_10BPS(c->dstFormat)) {
766 const int dst_depth = desc_dst->comp[plane].depth_minus1 + 1;
767 uint16_t *dstPtr2 = (uint16_t *) dstPtr;
769 if (is16BPS(c->srcFormat)) {
770 const uint16_t *srcPtr2 = (const uint16_t *) srcPtr;
771 #define COPY16TO9_OR_10(rfunc, wfunc) \
772 if (dst_depth == 9) { \
773 DITHER_COPY(dstPtr2, dstStride[plane] / 2, wfunc, \
774 srcPtr2, srcStride[plane] / 2, rfunc, \
775 dither_8x8_128, 7, clip9); \
777 DITHER_COPY(dstPtr2, dstStride[plane] / 2, wfunc, \
778 srcPtr2, srcStride[plane] / 2, rfunc, \
779 dither_8x8_64, 6, clip10); \
781 if (isBE(c->dstFormat)) {
782 if (isBE(c->srcFormat)) {
783 COPY16TO9_OR_10(AV_RB16, AV_WB16);
785 COPY16TO9_OR_10(AV_RL16, AV_WB16);
788 if (isBE(c->srcFormat)) {
789 COPY16TO9_OR_10(AV_RB16, AV_WL16);
791 COPY16TO9_OR_10(AV_RL16, AV_WL16);
795 #define COPY8TO9_OR_10(wfunc) \
796 for (i = 0; i < height; i++) { \
797 for (j = 0; j < length; j++) { \
798 const int srcpx = srcPtr[j]; \
799 wfunc(&dstPtr2[j], (srcpx << (dst_depth - 8)) | (srcpx >> (16 - dst_depth))); \
801 dstPtr2 += dstStride[plane] / 2; \
802 srcPtr += srcStride[plane]; \
804 if (isBE(c->dstFormat)) {
805 COPY8TO9_OR_10(AV_WB16);
807 COPY8TO9_OR_10(AV_WL16);
810 } else if (is16BPS(c->srcFormat) && !is16BPS(c->dstFormat)) {
811 const uint16_t *srcPtr2 = (const uint16_t *) srcPtr;
812 #define COPY16TO8(rfunc) \
813 DITHER_COPY(dstPtr, dstStride[plane], W8, \
814 srcPtr2, srcStride[plane] / 2, rfunc, \
815 dither_8x8_256, 8, av_clip_uint8);
816 if (isBE(c->srcFormat)) {
821 } else if (!is16BPS(c->srcFormat) && is16BPS(c->dstFormat)) {
822 for (i = 0; i < height; i++) {
823 for (j = 0; j < length; j++) {
824 dstPtr[ j << 1 ] = srcPtr[j];
825 dstPtr[(j << 1) + 1] = srcPtr[j];
827 srcPtr += srcStride[plane];
828 dstPtr += dstStride[plane];
830 } else if (is16BPS(c->srcFormat) && is16BPS(c->dstFormat) &&
831 isBE(c->srcFormat) != isBE(c->dstFormat)) {
833 for (i = 0; i < height; i++) {
834 for (j = 0; j < length; j++)
835 ((uint16_t *) dstPtr)[j] = av_bswap16(((const uint16_t *) srcPtr)[j]);
836 srcPtr += srcStride[plane];
837 dstPtr += dstStride[plane];
839 } else if (dstStride[plane] == srcStride[plane] &&
840 srcStride[plane] > 0 && srcStride[plane] == length) {
841 memcpy(dst[plane] + dstStride[plane] * y, src[plane],
842 height * dstStride[plane]);
844 if (is16BPS(c->srcFormat) && is16BPS(c->dstFormat))
846 else if (!desc_src->comp[0].depth_minus1)
847 length >>= 3; // monowhite/black
848 for (i = 0; i < height; i++) {
849 memcpy(dstPtr, srcPtr, length);
850 srcPtr += srcStride[plane];
851 dstPtr += dstStride[plane];
860 #define IS_DIFFERENT_ENDIANESS(src_fmt, dst_fmt, pix_fmt) \
861 ((src_fmt == pix_fmt ## BE && dst_fmt == pix_fmt ## LE) || \
862 (src_fmt == pix_fmt ## LE && dst_fmt == pix_fmt ## BE))
865 void ff_get_unscaled_swscale(SwsContext *c)
867 const enum AVPixelFormat srcFormat = c->srcFormat;
868 const enum AVPixelFormat dstFormat = c->dstFormat;
869 const int flags = c->flags;
870 const int dstH = c->dstH;
873 needsDither = isAnyRGB(dstFormat) &&
874 c->dstFormatBpp < 24 &&
875 (c->dstFormatBpp < c->srcFormatBpp || (!isAnyRGB(srcFormat)));
878 if ((srcFormat == AV_PIX_FMT_YUV420P || srcFormat == AV_PIX_FMT_YUVA420P) &&
879 (dstFormat == AV_PIX_FMT_NV12 || dstFormat == AV_PIX_FMT_NV21)) {
880 c->swScale = planarToNv12Wrapper;
883 if ((srcFormat == AV_PIX_FMT_YUV420P || srcFormat == AV_PIX_FMT_YUV422P ||
884 srcFormat == AV_PIX_FMT_YUVA420P) && isAnyRGB(dstFormat) &&
885 !(flags & SWS_ACCURATE_RND) && !(dstH & 1)) {
886 c->swScale = ff_yuv2rgb_get_func_ptr(c);
889 if (srcFormat == AV_PIX_FMT_YUV410P &&
890 (dstFormat == AV_PIX_FMT_YUV420P || dstFormat == AV_PIX_FMT_YUVA420P) &&
891 !(flags & SWS_BITEXACT)) {
892 c->swScale = yvu9ToYv12Wrapper;
896 if (srcFormat == AV_PIX_FMT_BGR24 &&
897 (dstFormat == AV_PIX_FMT_YUV420P || dstFormat == AV_PIX_FMT_YUVA420P) &&
898 !(flags & SWS_ACCURATE_RND))
899 c->swScale = bgr24ToYv12Wrapper;
901 /* RGB/BGR -> RGB/BGR (no dither needed forms) */
902 if (isAnyRGB(srcFormat) && isAnyRGB(dstFormat) && findRgbConvFn(c)
903 && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))
904 c->swScale= rgbToRgbWrapper;
906 if (isPlanarRGB(srcFormat) && isPackedRGB(dstFormat))
907 c->swScale = planarRgbToRgbWrapper;
909 /* bswap 16 bits per pixel/component packed formats */
910 if (IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BGR444) ||
911 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BGR48) ||
912 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BGR555) ||
913 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BGR565) ||
914 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_GRAY16) ||
915 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_RGB444) ||
916 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_RGB48) ||
917 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_RGB555) ||
918 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_RGB565))
919 c->swScale = packed_16bpc_bswap;
921 if ((usePal(srcFormat) && (
922 dstFormat == AV_PIX_FMT_RGB32 ||
923 dstFormat == AV_PIX_FMT_RGB32_1 ||
924 dstFormat == AV_PIX_FMT_RGB24 ||
925 dstFormat == AV_PIX_FMT_BGR32 ||
926 dstFormat == AV_PIX_FMT_BGR32_1 ||
927 dstFormat == AV_PIX_FMT_BGR24)))
928 c->swScale = palToRgbWrapper;
930 if (srcFormat == AV_PIX_FMT_YUV422P) {
931 if (dstFormat == AV_PIX_FMT_YUYV422)
932 c->swScale = yuv422pToYuy2Wrapper;
933 else if (dstFormat == AV_PIX_FMT_UYVY422)
934 c->swScale = yuv422pToUyvyWrapper;
937 /* LQ converters if -sws 0 or -sws 4*/
938 if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)) {
940 if (srcFormat == AV_PIX_FMT_YUV420P || srcFormat == AV_PIX_FMT_YUVA420P) {
941 if (dstFormat == AV_PIX_FMT_YUYV422)
942 c->swScale = planarToYuy2Wrapper;
943 else if (dstFormat == AV_PIX_FMT_UYVY422)
944 c->swScale = planarToUyvyWrapper;
947 if (srcFormat == AV_PIX_FMT_YUYV422 &&
948 (dstFormat == AV_PIX_FMT_YUV420P || dstFormat == AV_PIX_FMT_YUVA420P))
949 c->swScale = yuyvToYuv420Wrapper;
950 if (srcFormat == AV_PIX_FMT_UYVY422 &&
951 (dstFormat == AV_PIX_FMT_YUV420P || dstFormat == AV_PIX_FMT_YUVA420P))
952 c->swScale = uyvyToYuv420Wrapper;
953 if (srcFormat == AV_PIX_FMT_YUYV422 && dstFormat == AV_PIX_FMT_YUV422P)
954 c->swScale = yuyvToYuv422Wrapper;
955 if (srcFormat == AV_PIX_FMT_UYVY422 && dstFormat == AV_PIX_FMT_YUV422P)
956 c->swScale = uyvyToYuv422Wrapper;
959 if ( srcFormat == dstFormat ||
960 (srcFormat == AV_PIX_FMT_YUVA420P && dstFormat == AV_PIX_FMT_YUV420P) ||
961 (srcFormat == AV_PIX_FMT_YUV420P && dstFormat == AV_PIX_FMT_YUVA420P) ||
962 (isPlanarYUV(srcFormat) && isGray(dstFormat)) ||
963 (isPlanarYUV(dstFormat) && isGray(srcFormat)) ||
964 (isGray(dstFormat) && isGray(srcFormat)) ||
965 (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat) &&
966 c->chrDstHSubSample == c->chrSrcHSubSample &&
967 c->chrDstVSubSample == c->chrSrcVSubSample &&
968 dstFormat != AV_PIX_FMT_NV12 && dstFormat != AV_PIX_FMT_NV21 &&
969 srcFormat != AV_PIX_FMT_NV12 && srcFormat != AV_PIX_FMT_NV21))
971 if (isPacked(c->srcFormat))
972 c->swScale = packedCopyWrapper;
973 else /* Planar YUV or gray */
974 c->swScale = planarCopyWrapper;
978 ff_bfin_get_unscaled_swscale(c);
980 ff_swscale_get_unscaled_altivec(c);
983 static void reset_ptr(const uint8_t *src[], int format)
985 if (!isALPHA(format))
987 if (!isPlanar(format)) {
988 src[3] = src[2] = NULL;
995 static int check_image_pointers(uint8_t *data[4], enum AVPixelFormat pix_fmt,
996 const int linesizes[4])
998 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
1001 for (i = 0; i < 4; i++) {
1002 int plane = desc->comp[i].plane;
1003 if (!data[plane] || !linesizes[plane])
1011 * swscale wrapper, so we don't need to export the SwsContext.
1012 * Assumes planar YUV to be in YUV order instead of YVU.
1014 int attribute_align_arg sws_scale(struct SwsContext *c,
1015 const uint8_t * const srcSlice[],
1016 const int srcStride[], int srcSliceY,
1017 int srcSliceH, uint8_t *const dst[],
1018 const int dstStride[])
1021 const uint8_t *src2[4] = { srcSlice[0], srcSlice[1], srcSlice[2], srcSlice[3] };
1022 uint8_t *dst2[4] = { dst[0], dst[1], dst[2], dst[3] };
1024 // do not mess up sliceDir if we have a "trailing" 0-size slice
1028 if (!check_image_pointers(srcSlice, c->srcFormat, srcStride)) {
1029 av_log(c, AV_LOG_ERROR, "bad src image pointers\n");
1032 if (!check_image_pointers(dst, c->dstFormat, dstStride)) {
1033 av_log(c, AV_LOG_ERROR, "bad dst image pointers\n");
1037 if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
1038 av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");
1041 if (c->sliceDir == 0) {
1042 if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;
1045 if (usePal(c->srcFormat)) {
1046 for (i = 0; i < 256; i++) {
1047 int p, r, g, b, y, u, v;
1048 if (c->srcFormat == AV_PIX_FMT_PAL8) {
1049 p = ((const uint32_t *)(srcSlice[1]))[i];
1050 r = (p >> 16) & 0xFF;
1051 g = (p >> 8) & 0xFF;
1053 } else if (c->srcFormat == AV_PIX_FMT_RGB8) {
1054 r = ( i >> 5 ) * 36;
1055 g = ((i >> 2) & 7) * 36;
1057 } else if (c->srcFormat == AV_PIX_FMT_BGR8) {
1058 b = ( i >> 6 ) * 85;
1059 g = ((i >> 3) & 7) * 36;
1061 } else if (c->srcFormat == AV_PIX_FMT_RGB4_BYTE) {
1062 r = ( i >> 3 ) * 255;
1063 g = ((i >> 1) & 3) * 85;
1065 } else if (c->srcFormat == AV_PIX_FMT_GRAY8 ||
1066 c->srcFormat == AV_PIX_FMT_Y400A) {
1069 assert(c->srcFormat == AV_PIX_FMT_BGR4_BYTE);
1070 b = ( i >> 3 ) * 255;
1071 g = ((i >> 1) & 3) * 85;
1074 y = av_clip_uint8((RY * r + GY * g + BY * b + ( 33 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
1075 u = av_clip_uint8((RU * r + GU * g + BU * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
1076 v = av_clip_uint8((RV * r + GV * g + BV * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
1077 c->pal_yuv[i] = y + (u << 8) + (v << 16);
1079 switch (c->dstFormat) {
1080 case AV_PIX_FMT_BGR32:
1082 case AV_PIX_FMT_RGB24:
1084 c->pal_rgb[i] = r + (g << 8) + (b << 16);
1086 case AV_PIX_FMT_BGR32_1:
1088 case AV_PIX_FMT_BGR24:
1090 c->pal_rgb[i] = (r + (g << 8) + (b << 16)) << 8;
1092 case AV_PIX_FMT_RGB32_1:
1094 case AV_PIX_FMT_RGB24:
1096 c->pal_rgb[i] = (b + (g << 8) + (r << 16)) << 8;
1098 case AV_PIX_FMT_RGB32:
1100 case AV_PIX_FMT_BGR24:
1103 c->pal_rgb[i] = b + (g << 8) + (r << 16);
1108 // copy strides, so they can safely be modified
1109 if (c->sliceDir == 1) {
1110 // slices go from top to bottom
1111 int srcStride2[4] = { srcStride[0], srcStride[1], srcStride[2],
1113 int dstStride2[4] = { dstStride[0], dstStride[1], dstStride[2],
1116 reset_ptr(src2, c->srcFormat);
1117 reset_ptr((const uint8_t **) dst2, c->dstFormat);
1119 /* reset slice direction at end of frame */
1120 if (srcSliceY + srcSliceH == c->srcH)
1123 return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2,
1126 // slices go from bottom to top => we flip the image internally
1127 int srcStride2[4] = { -srcStride[0], -srcStride[1], -srcStride[2],
1129 int dstStride2[4] = { -dstStride[0], -dstStride[1], -dstStride[2],
1132 src2[0] += (srcSliceH - 1) * srcStride[0];
1133 if (!usePal(c->srcFormat))
1134 src2[1] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[1];
1135 src2[2] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[2];
1136 src2[3] += (srcSliceH - 1) * srcStride[3];
1137 dst2[0] += ( c->dstH - 1) * dstStride[0];
1138 dst2[1] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[1];
1139 dst2[2] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[2];
1140 dst2[3] += ( c->dstH - 1) * dstStride[3];
1142 reset_ptr(src2, c->srcFormat);
1143 reset_ptr((const uint8_t **) dst2, c->dstFormat);
1145 /* reset slice direction at end of frame */
1149 return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH,
1150 srcSliceH, dst2, dstStride2);
1154 /* Convert the palette to the same packed 32-bit format as the palette */
1155 void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst,
1156 int num_pixels, const uint8_t *palette)
1160 for (i = 0; i < num_pixels; i++)
1161 ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i]];
1164 /* Palette format: ABCD -> dst format: ABC */
1165 void sws_convertPalette8ToPacked24(const uint8_t *src, uint8_t *dst,
1166 int num_pixels, const uint8_t *palette)
1170 for (i = 0; i < num_pixels; i++) {
1172 dst[0] = palette[src[i] * 4 + 0];
1173 dst[1] = palette[src[i] * 4 + 1];
1174 dst[2] = palette[src[i] * 4 + 2];