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
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 #define RGB2YUV_SHIFT 15
38 #define BY ( (int) (0.114 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
39 #define BV (-(int) (0.081 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
40 #define BU ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
41 #define GY ( (int) (0.587 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
42 #define GV (-(int) (0.419 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
43 #define GU (-(int) (0.331 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
44 #define RY ( (int) (0.299 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
45 #define RV ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
46 #define RU (-(int) (0.169 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
48 DECLARE_ALIGNED(8, const uint8_t, dithers)[8][8][8]={
50 { 0, 1, 0, 1, 0, 1, 0, 1,},
51 { 1, 0, 1, 0, 1, 0, 1, 0,},
52 { 0, 1, 0, 1, 0, 1, 0, 1,},
53 { 1, 0, 1, 0, 1, 0, 1, 0,},
54 { 0, 1, 0, 1, 0, 1, 0, 1,},
55 { 1, 0, 1, 0, 1, 0, 1, 0,},
56 { 0, 1, 0, 1, 0, 1, 0, 1,},
57 { 1, 0, 1, 0, 1, 0, 1, 0,},
59 { 1, 2, 1, 2, 1, 2, 1, 2,},
60 { 3, 0, 3, 0, 3, 0, 3, 0,},
61 { 1, 2, 1, 2, 1, 2, 1, 2,},
62 { 3, 0, 3, 0, 3, 0, 3, 0,},
63 { 1, 2, 1, 2, 1, 2, 1, 2,},
64 { 3, 0, 3, 0, 3, 0, 3, 0,},
65 { 1, 2, 1, 2, 1, 2, 1, 2,},
66 { 3, 0, 3, 0, 3, 0, 3, 0,},
68 { 2, 4, 3, 5, 2, 4, 3, 5,},
69 { 6, 0, 7, 1, 6, 0, 7, 1,},
70 { 3, 5, 2, 4, 3, 5, 2, 4,},
71 { 7, 1, 6, 0, 7, 1, 6, 0,},
72 { 2, 4, 3, 5, 2, 4, 3, 5,},
73 { 6, 0, 7, 1, 6, 0, 7, 1,},
74 { 3, 5, 2, 4, 3, 5, 2, 4,},
75 { 7, 1, 6, 0, 7, 1, 6, 0,},
77 { 4, 8, 7, 11, 4, 8, 7, 11,},
78 { 12, 0, 15, 3, 12, 0, 15, 3,},
79 { 6, 10, 5, 9, 6, 10, 5, 9,},
80 { 14, 2, 13, 1, 14, 2, 13, 1,},
81 { 4, 8, 7, 11, 4, 8, 7, 11,},
82 { 12, 0, 15, 3, 12, 0, 15, 3,},
83 { 6, 10, 5, 9, 6, 10, 5, 9,},
84 { 14, 2, 13, 1, 14, 2, 13, 1,},
86 { 9, 17, 15, 23, 8, 16, 14, 22,},
87 { 25, 1, 31, 7, 24, 0, 30, 6,},
88 { 13, 21, 11, 19, 12, 20, 10, 18,},
89 { 29, 5, 27, 3, 28, 4, 26, 2,},
90 { 8, 16, 14, 22, 9, 17, 15, 23,},
91 { 24, 0, 30, 6, 25, 1, 31, 7,},
92 { 12, 20, 10, 18, 13, 21, 11, 19,},
93 { 28, 4, 26, 2, 29, 5, 27, 3,},
95 { 18, 34, 30, 46, 17, 33, 29, 45,},
96 { 50, 2, 62, 14, 49, 1, 61, 13,},
97 { 26, 42, 22, 38, 25, 41, 21, 37,},
98 { 58, 10, 54, 6, 57, 9, 53, 5,},
99 { 16, 32, 28, 44, 19, 35, 31, 47,},
100 { 48, 0, 60, 12, 51, 3, 63, 15,},
101 { 24, 40, 20, 36, 27, 43, 23, 39,},
102 { 56, 8, 52, 4, 59, 11, 55, 7,},
104 { 18, 34, 30, 46, 17, 33, 29, 45,},
105 { 50, 2, 62, 14, 49, 1, 61, 13,},
106 { 26, 42, 22, 38, 25, 41, 21, 37,},
107 { 58, 10, 54, 6, 57, 9, 53, 5,},
108 { 16, 32, 28, 44, 19, 35, 31, 47,},
109 { 48, 0, 60, 12, 51, 3, 63, 15,},
110 { 24, 40, 20, 36, 27, 43, 23, 39,},
111 { 56, 8, 52, 4, 59, 11, 55, 7,},
113 { 36, 68, 60, 92, 34, 66, 58, 90,},
114 { 100, 4,124, 28, 98, 2,122, 26,},
115 { 52, 84, 44, 76, 50, 82, 42, 74,},
116 { 116, 20,108, 12,114, 18,106, 10,},
117 { 32, 64, 56, 88, 38, 70, 62, 94,},
118 { 96, 0,120, 24,102, 6,126, 30,},
119 { 48, 80, 40, 72, 54, 86, 46, 78,},
120 { 112, 16,104, 8,118, 22,110, 14,},
123 static const uint8_t flat64[8]={64,64,64,64,64,64,64,64};
125 const uint16_t dither_scale[15][16]={
126 { 2, 3, 3, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,},
127 { 2, 3, 7, 7, 13, 13, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,},
128 { 3, 3, 4, 15, 15, 29, 57, 57, 57, 113, 113, 113, 113, 113, 113, 113,},
129 { 3, 4, 4, 5, 31, 31, 61, 121, 241, 241, 241, 241, 481, 481, 481, 481,},
130 { 3, 4, 5, 5, 6, 63, 63, 125, 249, 497, 993, 993, 993, 993, 993, 1985,},
131 { 3, 5, 6, 6, 6, 7, 127, 127, 253, 505, 1009, 2017, 4033, 4033, 4033, 4033,},
132 { 3, 5, 6, 7, 7, 7, 8, 255, 255, 509, 1017, 2033, 4065, 8129,16257,16257,},
133 { 3, 5, 6, 8, 8, 8, 8, 9, 511, 511, 1021, 2041, 4081, 8161,16321,32641,},
134 { 3, 5, 7, 8, 9, 9, 9, 9, 10, 1023, 1023, 2045, 4089, 8177,16353,32705,},
135 { 3, 5, 7, 8, 10, 10, 10, 10, 10, 11, 2047, 2047, 4093, 8185,16369,32737,},
136 { 3, 5, 7, 8, 10, 11, 11, 11, 11, 11, 12, 4095, 4095, 8189,16377,32753,},
137 { 3, 5, 7, 9, 10, 12, 12, 12, 12, 12, 12, 13, 8191, 8191,16381,32761,},
138 { 3, 5, 7, 9, 10, 12, 13, 13, 13, 13, 13, 13, 14,16383,16383,32765,},
139 { 3, 5, 7, 9, 10, 12, 14, 14, 14, 14, 14, 14, 14, 15,32767,32767,},
140 { 3, 5, 7, 9, 11, 12, 14, 15, 15, 15, 15, 15, 15, 15, 16,65535,},
144 static void fillPlane(uint8_t *plane, int stride, int width, int height, int y,
148 uint8_t *ptr = plane + stride * y;
149 for (i = 0; i < height; i++) {
150 memset(ptr, val, width);
155 static void fillPlane16(uint8_t *plane, int stride, int width, int height, int y,
159 uint8_t *ptr = plane + stride * y;
160 int v = alpha ? -1 : (1<<bits);
161 for (i = 0; i < height; i++) {
162 for (j = 0; j < width; j++) {
169 static void copyPlane(const uint8_t *src, int srcStride,
170 int srcSliceY, int srcSliceH, int width,
171 uint8_t *dst, int dstStride)
173 dst += dstStride * srcSliceY;
174 if (dstStride == srcStride && srcStride > 0) {
175 memcpy(dst, src, srcSliceH * dstStride);
178 for (i = 0; i < srcSliceH; i++) {
179 memcpy(dst, src, width);
186 static int planarToNv12Wrapper(SwsContext *c, const uint8_t *src[],
187 int srcStride[], int srcSliceY,
188 int srcSliceH, uint8_t *dstParam[],
191 uint8_t *dst = dstParam[1] + dstStride[1] * srcSliceY / 2;
193 copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,
194 dstParam[0], dstStride[0]);
196 if (c->dstFormat == PIX_FMT_NV12)
197 interleaveBytes(src[1], src[2], dst, c->srcW / 2, srcSliceH / 2,
198 srcStride[1], srcStride[2], dstStride[0]);
200 interleaveBytes(src[2], src[1], dst, c->srcW / 2, srcSliceH / 2,
201 srcStride[2], srcStride[1], dstStride[0]);
206 static int planarToYuy2Wrapper(SwsContext *c, const uint8_t *src[],
207 int srcStride[], int srcSliceY, int srcSliceH,
208 uint8_t *dstParam[], int dstStride[])
210 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
212 yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
213 srcStride[1], dstStride[0]);
218 static int planarToUyvyWrapper(SwsContext *c, const uint8_t *src[],
219 int srcStride[], int srcSliceY, int srcSliceH,
220 uint8_t *dstParam[], int dstStride[])
222 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
224 yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
225 srcStride[1], dstStride[0]);
230 static int yuv422pToYuy2Wrapper(SwsContext *c, const uint8_t *src[],
231 int srcStride[], int srcSliceY, int srcSliceH,
232 uint8_t *dstParam[], int dstStride[])
234 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
236 yuv422ptoyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
237 srcStride[1], dstStride[0]);
242 static int yuv422pToUyvyWrapper(SwsContext *c, const uint8_t *src[],
243 int srcStride[], int srcSliceY, int srcSliceH,
244 uint8_t *dstParam[], int dstStride[])
246 uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
248 yuv422ptouyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
249 srcStride[1], dstStride[0]);
254 static int yuyvToYuv420Wrapper(SwsContext *c, const uint8_t *src[],
255 int srcStride[], int srcSliceY, int srcSliceH,
256 uint8_t *dstParam[], int dstStride[])
258 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
259 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY / 2;
260 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY / 2;
262 yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
263 dstStride[1], srcStride[0]);
266 fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
271 static int yuyvToYuv422Wrapper(SwsContext *c, const uint8_t *src[],
272 int srcStride[], int srcSliceY, int srcSliceH,
273 uint8_t *dstParam[], int dstStride[])
275 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
276 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY;
277 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY;
279 yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
280 dstStride[1], srcStride[0]);
285 static int uyvyToYuv420Wrapper(SwsContext *c, const uint8_t *src[],
286 int srcStride[], int srcSliceY, int srcSliceH,
287 uint8_t *dstParam[], int dstStride[])
289 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
290 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY / 2;
291 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY / 2;
293 uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
294 dstStride[1], srcStride[0]);
297 fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
302 static int uyvyToYuv422Wrapper(SwsContext *c, const uint8_t *src[],
303 int srcStride[], int srcSliceY, int srcSliceH,
304 uint8_t *dstParam[], int dstStride[])
306 uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
307 uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY;
308 uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY;
310 uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
311 dstStride[1], srcStride[0]);
316 static void gray8aToPacked32(const uint8_t *src, uint8_t *dst, int num_pixels,
317 const uint8_t *palette)
320 for (i = 0; i < num_pixels; i++)
321 ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i << 1]] | (src[(i << 1) + 1] << 24);
324 static void gray8aToPacked32_1(const uint8_t *src, uint8_t *dst, int num_pixels,
325 const uint8_t *palette)
329 for (i = 0; i < num_pixels; i++)
330 ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i << 1]] | src[(i << 1) + 1];
333 static void gray8aToPacked24(const uint8_t *src, uint8_t *dst, int num_pixels,
334 const uint8_t *palette)
338 for (i = 0; i < num_pixels; i++) {
340 dst[0] = palette[src[i << 1] * 4 + 0];
341 dst[1] = palette[src[i << 1] * 4 + 1];
342 dst[2] = palette[src[i << 1] * 4 + 2];
347 static int packed_16bpc_bswap(SwsContext *c, const uint8_t *src[],
348 int srcStride[], int srcSliceY, int srcSliceH,
349 uint8_t *dst[], int dstStride[])
352 int srcstr = srcStride[0] >> 1;
353 int dststr = dstStride[0] >> 1;
354 uint16_t *dstPtr = (uint16_t *) dst[0];
355 const uint16_t *srcPtr = (const uint16_t *) src[0];
356 int min_stride = FFMIN(srcstr, dststr);
358 for (i = 0; i < srcSliceH; i++) {
359 for (j = 0; j < min_stride; j++) {
360 dstPtr[j] = av_bswap16(srcPtr[j]);
369 static int palToRgbWrapper(SwsContext *c, const uint8_t *src[], int srcStride[],
370 int srcSliceY, int srcSliceH, uint8_t *dst[],
373 const enum PixelFormat srcFormat = c->srcFormat;
374 const enum PixelFormat dstFormat = c->dstFormat;
375 void (*conv)(const uint8_t *src, uint8_t *dst, int num_pixels,
376 const uint8_t *palette) = NULL;
378 uint8_t *dstPtr = dst[0] + dstStride[0] * srcSliceY;
379 const uint8_t *srcPtr = src[0];
381 if (srcFormat == PIX_FMT_GRAY8A) {
383 case PIX_FMT_RGB32 : conv = gray8aToPacked32; break;
384 case PIX_FMT_BGR32 : conv = gray8aToPacked32; break;
385 case PIX_FMT_BGR32_1: conv = gray8aToPacked32_1; break;
386 case PIX_FMT_RGB32_1: conv = gray8aToPacked32_1; break;
387 case PIX_FMT_RGB24 : conv = gray8aToPacked24; break;
388 case PIX_FMT_BGR24 : conv = gray8aToPacked24; break;
390 } else if (usePal(srcFormat)) {
392 case PIX_FMT_RGB32 : conv = sws_convertPalette8ToPacked32; break;
393 case PIX_FMT_BGR32 : conv = sws_convertPalette8ToPacked32; break;
394 case PIX_FMT_BGR32_1: conv = sws_convertPalette8ToPacked32; break;
395 case PIX_FMT_RGB32_1: conv = sws_convertPalette8ToPacked32; break;
396 case PIX_FMT_RGB24 : conv = sws_convertPalette8ToPacked24; break;
397 case PIX_FMT_BGR24 : conv = sws_convertPalette8ToPacked24; break;
402 av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
403 av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat));
405 for (i = 0; i < srcSliceH; i++) {
406 conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);
407 srcPtr += srcStride[0];
408 dstPtr += dstStride[0];
415 static void gbr24ptopacked24(const uint8_t *src[], int srcStride[],
416 uint8_t *dst, int dstStride, int srcSliceH,
420 for (h = 0; h < srcSliceH; h++) {
421 uint8_t *dest = dst + dstStride * h;
422 for (x = 0; x < width; x++) {
428 for (i = 0; i < 3; i++)
429 src[i] += srcStride[i];
433 static void gbr24ptopacked32(const uint8_t *src[], int srcStride[],
434 uint8_t *dst, int dstStride, int srcSliceH,
435 int alpha_first, int width)
438 for (h = 0; h < srcSliceH; h++) {
439 uint8_t *dest = dst + dstStride * h;
442 for (x = 0; x < width; x++) {
449 for (x = 0; x < width; x++) {
457 for (i = 0; i < 3; i++)
458 src[i] += srcStride[i];
462 static int planarRgbToRgbWrapper(SwsContext *c, const uint8_t *src[],
463 int srcStride[], int srcSliceY, int srcSliceH,
464 uint8_t *dst[], int dstStride[])
467 if (c->srcFormat != PIX_FMT_GBRP) {
468 av_log(c, AV_LOG_ERROR, "unsupported planar RGB conversion %s -> %s\n",
469 av_get_pix_fmt_name(c->srcFormat),
470 av_get_pix_fmt_name(c->dstFormat));
474 switch (c->dstFormat) {
476 gbr24ptopacked24((const uint8_t *[]) { src[1], src[0], src[2] },
477 (int []) { srcStride[1], srcStride[0], srcStride[2] },
478 dst[0] + srcSliceY * dstStride[0], dstStride[0],
483 gbr24ptopacked24((const uint8_t *[]) { src[2], src[0], src[1] },
484 (int []) { srcStride[2], srcStride[0], srcStride[1] },
485 dst[0] + srcSliceY * dstStride[0], dstStride[0],
492 gbr24ptopacked32((const uint8_t *[]) { src[2], src[0], src[1] },
493 (int []) { srcStride[2], srcStride[0], srcStride[1] },
494 dst[0] + srcSliceY * dstStride[0], dstStride[0],
495 srcSliceH, alpha_first, c->srcW);
501 gbr24ptopacked32((const uint8_t *[]) { src[1], src[0], src[2] },
502 (int []) { srcStride[1], srcStride[0], srcStride[2] },
503 dst[0] + srcSliceY * dstStride[0], dstStride[0],
504 srcSliceH, alpha_first, c->srcW);
508 av_log(c, AV_LOG_ERROR,
509 "unsupported planar RGB conversion %s -> %s\n",
510 av_get_pix_fmt_name(c->srcFormat),
511 av_get_pix_fmt_name(c->dstFormat));
517 #define isRGBA32(x) ( \
518 (x) == PIX_FMT_ARGB \
519 || (x) == PIX_FMT_RGBA \
520 || (x) == PIX_FMT_BGRA \
521 || (x) == PIX_FMT_ABGR \
524 /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */
525 typedef void (* rgbConvFn) (const uint8_t *, uint8_t *, int);
526 static rgbConvFn findRgbConvFn(SwsContext *c)
528 const enum PixelFormat srcFormat = c->srcFormat;
529 const enum PixelFormat dstFormat = c->dstFormat;
530 const int srcId = c->srcFormatBpp;
531 const int dstId = c->dstFormatBpp;
532 rgbConvFn conv = NULL;
534 #define IS_NOT_NE(bpp, fmt) \
535 (((bpp + 7) >> 3) == 2 && \
536 (!(av_pix_fmt_descriptors[fmt].flags & PIX_FMT_BE) != !HAVE_BIGENDIAN))
538 /* if this is non-native rgb444/555/565, don't handle it here. */
539 if (IS_NOT_NE(srcId, srcFormat) || IS_NOT_NE(dstId, dstFormat))
542 #define CONV_IS(src, dst) (srcFormat == PIX_FMT_##src && dstFormat == PIX_FMT_##dst)
544 if (isRGBA32(srcFormat) && isRGBA32(dstFormat)) {
545 if ( CONV_IS(ABGR, RGBA)
546 || CONV_IS(ARGB, BGRA)
547 || CONV_IS(BGRA, ARGB)
548 || CONV_IS(RGBA, ABGR)) conv = shuffle_bytes_3210;
549 else if (CONV_IS(ABGR, ARGB)
550 || CONV_IS(ARGB, ABGR)) conv = shuffle_bytes_0321;
551 else if (CONV_IS(ABGR, BGRA)
552 || CONV_IS(ARGB, RGBA)) conv = shuffle_bytes_1230;
553 else if (CONV_IS(BGRA, RGBA)
554 || CONV_IS(RGBA, BGRA)) conv = shuffle_bytes_2103;
555 else if (CONV_IS(BGRA, ABGR)
556 || CONV_IS(RGBA, ARGB)) conv = shuffle_bytes_3012;
559 if ((isBGRinInt(srcFormat) && isBGRinInt(dstFormat)) ||
560 (isRGBinInt(srcFormat) && isRGBinInt(dstFormat))) {
561 switch (srcId | (dstId << 16)) {
562 case 0x000F000C: conv = rgb12to15; break;
563 case 0x000F0010: conv = rgb16to15; break;
564 case 0x000F0018: conv = rgb24to15; break;
565 case 0x000F0020: conv = rgb32to15; break;
566 case 0x0010000F: conv = rgb15to16; break;
567 case 0x00100018: conv = rgb24to16; break;
568 case 0x00100020: conv = rgb32to16; break;
569 case 0x0018000F: conv = rgb15to24; break;
570 case 0x00180010: conv = rgb16to24; break;
571 case 0x00180020: conv = rgb32to24; break;
572 case 0x0020000F: conv = rgb15to32; break;
573 case 0x00200010: conv = rgb16to32; break;
574 case 0x00200018: conv = rgb24to32; break;
576 } else if ((isBGRinInt(srcFormat) && isRGBinInt(dstFormat)) ||
577 (isRGBinInt(srcFormat) && isBGRinInt(dstFormat))) {
578 switch (srcId | (dstId << 16)) {
579 case 0x000C000C: conv = rgb12tobgr12; break;
580 case 0x000F000F: conv = rgb15tobgr15; break;
581 case 0x000F0010: conv = rgb16tobgr15; break;
582 case 0x000F0018: conv = rgb24tobgr15; break;
583 case 0x000F0020: conv = rgb32tobgr15; break;
584 case 0x0010000F: conv = rgb15tobgr16; break;
585 case 0x00100010: conv = rgb16tobgr16; break;
586 case 0x00100018: conv = rgb24tobgr16; break;
587 case 0x00100020: conv = rgb32tobgr16; break;
588 case 0x0018000F: conv = rgb15tobgr24; break;
589 case 0x00180010: conv = rgb16tobgr24; break;
590 case 0x00180018: conv = rgb24tobgr24; break;
591 case 0x00180020: conv = rgb32tobgr24; break;
592 case 0x0020000F: conv = rgb15tobgr32; break;
593 case 0x00200010: conv = rgb16tobgr32; break;
594 case 0x00200018: conv = rgb24tobgr32; break;
601 /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */
602 static int rgbToRgbWrapper(SwsContext *c, const uint8_t *src[], int srcStride[],
603 int srcSliceY, int srcSliceH, uint8_t *dst[],
607 const enum PixelFormat srcFormat = c->srcFormat;
608 const enum PixelFormat dstFormat = c->dstFormat;
609 const int srcBpp = (c->srcFormatBpp + 7) >> 3;
610 const int dstBpp = (c->dstFormatBpp + 7) >> 3;
611 rgbConvFn conv = findRgbConvFn(c);
614 av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
615 av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat));
617 const uint8_t *srcPtr = src[0];
618 uint8_t *dstPtr = dst[0];
619 if ((srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1) &&
620 !isRGBA32(dstFormat))
621 srcPtr += ALT32_CORR;
623 if ((dstFormat == PIX_FMT_RGB32_1 || dstFormat == PIX_FMT_BGR32_1) &&
624 !isRGBA32(srcFormat))
625 dstPtr += ALT32_CORR;
627 if (dstStride[0] * srcBpp == srcStride[0] * dstBpp && srcStride[0] > 0 &&
628 !(srcStride[0] % srcBpp))
629 conv(srcPtr, dstPtr + dstStride[0] * srcSliceY,
630 srcSliceH * srcStride[0]);
633 dstPtr += dstStride[0] * srcSliceY;
635 for (i = 0; i < srcSliceH; i++) {
636 conv(srcPtr, dstPtr, c->srcW * srcBpp);
637 srcPtr += srcStride[0];
638 dstPtr += dstStride[0];
645 static int bgr24ToYv12Wrapper(SwsContext *c, const uint8_t *src[],
646 int srcStride[], int srcSliceY, int srcSliceH,
647 uint8_t *dst[], int dstStride[])
651 dst[0] + srcSliceY * dstStride[0],
652 dst[1] + (srcSliceY >> 1) * dstStride[1],
653 dst[2] + (srcSliceY >> 1) * dstStride[2],
655 dstStride[0], dstStride[1], srcStride[0]);
657 fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
661 static int yvu9ToYv12Wrapper(SwsContext *c, const uint8_t *src[],
662 int srcStride[], int srcSliceY, int srcSliceH,
663 uint8_t *dst[], int dstStride[])
665 copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,
666 dst[0], dstStride[0]);
668 planar2x(src[1], dst[1] + dstStride[1] * (srcSliceY >> 1), c->chrSrcW,
669 srcSliceH >> 2, srcStride[1], dstStride[1]);
670 planar2x(src[2], dst[2] + dstStride[2] * (srcSliceY >> 1), c->chrSrcW,
671 srcSliceH >> 2, srcStride[2], dstStride[2]);
673 fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
677 /* unscaled copy like stuff (assumes nearly identical formats) */
678 static int packedCopyWrapper(SwsContext *c, const uint8_t *src[],
679 int srcStride[], int srcSliceY, int srcSliceH,
680 uint8_t *dst[], int dstStride[])
682 if (dstStride[0] == srcStride[0] && srcStride[0] > 0)
683 memcpy(dst[0] + dstStride[0] * srcSliceY, src[0], srcSliceH * dstStride[0]);
686 const uint8_t *srcPtr = src[0];
687 uint8_t *dstPtr = dst[0] + dstStride[0] * srcSliceY;
690 /* universal length finder */
691 while (length + c->srcW <= FFABS(dstStride[0]) &&
692 length + c->srcW <= FFABS(srcStride[0]))
696 for (i = 0; i < srcSliceH; i++) {
697 memcpy(dstPtr, srcPtr, length);
698 srcPtr += srcStride[0];
699 dstPtr += dstStride[0];
705 #define DITHER_COPY(dst, dstStride, src, srcStride, bswap, dbswap)\
706 uint16_t scale= dither_scale[dst_depth-1][src_depth-1];\
707 int shift= src_depth-dst_depth + dither_scale[src_depth-2][dst_depth-1];\
708 for (i = 0; i < height; i++) {\
709 const uint8_t *dither= dithers[src_depth-9][i&7];\
710 for (j = 0; j < length-7; j+=8){\
711 dst[j+0] = dbswap((bswap(src[j+0]) + dither[0])*scale>>shift);\
712 dst[j+1] = dbswap((bswap(src[j+1]) + dither[1])*scale>>shift);\
713 dst[j+2] = dbswap((bswap(src[j+2]) + dither[2])*scale>>shift);\
714 dst[j+3] = dbswap((bswap(src[j+3]) + dither[3])*scale>>shift);\
715 dst[j+4] = dbswap((bswap(src[j+4]) + dither[4])*scale>>shift);\
716 dst[j+5] = dbswap((bswap(src[j+5]) + dither[5])*scale>>shift);\
717 dst[j+6] = dbswap((bswap(src[j+6]) + dither[6])*scale>>shift);\
718 dst[j+7] = dbswap((bswap(src[j+7]) + dither[7])*scale>>shift);\
720 for (; j < length; j++)\
721 dst[j] = dbswap((bswap(src[j]) + dither[j&7])*scale>>shift);\
726 static int planarCopyWrapper(SwsContext *c, const uint8_t *src[],
727 int srcStride[], int srcSliceY, int srcSliceH,
728 uint8_t *dst[], int dstStride[])
731 for (plane = 0; plane < 4; plane++) {
732 int length = (plane == 0 || plane == 3) ? c->srcW : -((-c->srcW ) >> c->chrDstHSubSample);
733 int y = (plane == 0 || plane == 3) ? srcSliceY: -((-srcSliceY) >> c->chrDstVSubSample);
734 int height = (plane == 0 || plane == 3) ? srcSliceH: -((-srcSliceH) >> c->chrDstVSubSample);
735 const uint8_t *srcPtr = src[plane];
736 uint8_t *dstPtr = dst[plane] + dstStride[plane] * y;
737 int shiftonly= plane==1 || plane==2 || (!c->srcRange && plane==0);
741 // ignore palette for GRAY8
742 if (plane == 1 && !dst[2]) continue;
743 if (!src[plane] || (plane == 1 && !src[2])) {
744 if (is16BPS(c->dstFormat) || isNBPS(c->dstFormat)) {
745 fillPlane16(dst[plane], dstStride[plane], length, height, y,
746 plane == 3, av_pix_fmt_descriptors[c->dstFormat].comp[plane].depth_minus1);
748 fillPlane(dst[plane], dstStride[plane], length, height, y,
749 (plane == 3) ? 255 : 128);
752 if(isNBPS(c->srcFormat) || isNBPS(c->dstFormat)
753 || (is16BPS(c->srcFormat) != is16BPS(c->dstFormat))
755 const int src_depth = av_pix_fmt_descriptors[c->srcFormat].comp[plane].depth_minus1 + 1;
756 const int dst_depth = av_pix_fmt_descriptors[c->dstFormat].comp[plane].depth_minus1 + 1;
757 const uint16_t *srcPtr2 = (const uint16_t *) srcPtr;
758 uint16_t *dstPtr2 = (uint16_t*)dstPtr;
760 if (dst_depth == 8) {
761 if(isBE(c->srcFormat) == HAVE_BIGENDIAN){
762 DITHER_COPY(dstPtr, dstStride[plane], srcPtr2, srcStride[plane]/2, , )
764 DITHER_COPY(dstPtr, dstStride[plane], srcPtr2, srcStride[plane]/2, av_bswap16, )
766 } else if (src_depth == 8) {
767 for (i = 0; i < height; i++) {
770 for (j = 0; j < length; j++)\
771 w(&dstPtr2[j], srcPtr[j]<<(dst_depth-8));\
773 for (j = 0; j < length; j++)\
774 w(&dstPtr2[j], (srcPtr[j]<<(dst_depth-8)) |\
775 (srcPtr[j]>>(2*8-dst_depth)));\
777 if(isBE(c->dstFormat)){
782 dstPtr2 += dstStride[plane]/2;
783 srcPtr += srcStride[plane];
785 } else if (src_depth <= dst_depth) {
786 for (i = 0; i < height; i++) {
787 #define COPY_UP(r,w) \
789 for (j = 0; j < length; j++){ \
790 unsigned int v= r(&srcPtr2[j]);\
791 w(&dstPtr2[j], v<<(dst_depth-src_depth));\
794 for (j = 0; j < length; j++){ \
795 unsigned int v= r(&srcPtr2[j]);\
796 w(&dstPtr2[j], (v<<(dst_depth-src_depth)) | \
797 (v>>(2*src_depth-dst_depth)));\
800 if(isBE(c->srcFormat)){
801 if(isBE(c->dstFormat)){
802 COPY_UP(AV_RB16, AV_WB16)
804 COPY_UP(AV_RB16, AV_WL16)
807 if(isBE(c->dstFormat)){
808 COPY_UP(AV_RL16, AV_WB16)
810 COPY_UP(AV_RL16, AV_WL16)
813 dstPtr2 += dstStride[plane]/2;
814 srcPtr2 += srcStride[plane]/2;
817 if(isBE(c->srcFormat) == HAVE_BIGENDIAN){
818 if(isBE(c->dstFormat) == HAVE_BIGENDIAN){
819 DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, , )
821 DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, , av_bswap16)
824 if(isBE(c->dstFormat) == HAVE_BIGENDIAN){
825 DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, av_bswap16, )
827 DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, av_bswap16, av_bswap16)
831 } else if (is16BPS(c->srcFormat) && is16BPS(c->dstFormat) &&
832 isBE(c->srcFormat) != isBE(c->dstFormat)) {
834 for (i = 0; i < height; i++) {
835 for (j = 0; j < length; j++)
836 ((uint16_t *) dstPtr)[j] = av_bswap16(((const uint16_t *) srcPtr)[j]);
837 srcPtr += srcStride[plane];
838 dstPtr += dstStride[plane];
840 } else if (dstStride[plane] == srcStride[plane] &&
841 srcStride[plane] > 0 && srcStride[plane] == length) {
842 memcpy(dst[plane] + dstStride[plane] * y, src[plane],
843 height * dstStride[plane]);
845 if (is16BPS(c->srcFormat) && is16BPS(c->dstFormat))
847 else if (!av_pix_fmt_descriptors[c->srcFormat].comp[0].depth_minus1)
848 length >>= 3; // monowhite/black
849 for (i = 0; i < height; i++) {
850 memcpy(dstPtr, srcPtr, length);
851 srcPtr += srcStride[plane];
852 dstPtr += dstStride[plane];
861 #define IS_DIFFERENT_ENDIANESS(src_fmt, dst_fmt, pix_fmt) \
862 ((src_fmt == pix_fmt ## BE && dst_fmt == pix_fmt ## LE) || \
863 (src_fmt == pix_fmt ## LE && dst_fmt == pix_fmt ## BE))
866 void ff_get_unscaled_swscale(SwsContext *c)
868 const enum PixelFormat srcFormat = c->srcFormat;
869 const enum PixelFormat dstFormat = c->dstFormat;
870 const int flags = c->flags;
871 const int dstH = c->dstH;
874 needsDither = isAnyRGB(dstFormat) &&
875 c->dstFormatBpp < 24 &&
876 (c->dstFormatBpp < c->srcFormatBpp || (!isAnyRGB(srcFormat)));
879 if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) &&
880 (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21)) {
881 c->swScale = planarToNv12Wrapper;
884 if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUV422P ||
885 srcFormat == PIX_FMT_YUVA420P) && isAnyRGB(dstFormat) &&
886 !(flags & SWS_ACCURATE_RND) && !(dstH & 1)) {
887 c->swScale = ff_yuv2rgb_get_func_ptr(c);
890 if (srcFormat == PIX_FMT_YUV410P &&
891 (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P) &&
892 !(flags & SWS_BITEXACT)) {
893 c->swScale = yvu9ToYv12Wrapper;
897 if (srcFormat == PIX_FMT_BGR24 &&
898 (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P) &&
899 !(flags & SWS_ACCURATE_RND))
900 c->swScale = bgr24ToYv12Wrapper;
902 /* RGB/BGR -> RGB/BGR (no dither needed forms) */
903 if (isAnyRGB(srcFormat) && isAnyRGB(dstFormat) && findRgbConvFn(c)
904 && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))
905 c->swScale= rgbToRgbWrapper;
907 #define isByteRGB(f) (\
908 f == PIX_FMT_RGB32 ||\
909 f == PIX_FMT_RGB32_1 ||\
910 f == PIX_FMT_RGB24 ||\
911 f == PIX_FMT_BGR32 ||\
912 f == PIX_FMT_BGR32_1 ||\
915 if (isAnyRGB(srcFormat) && isPlanar(srcFormat) && isByteRGB(dstFormat))
916 c->swScale = planarRgbToRgbWrapper;
918 /* bswap 16 bits per pixel/component packed formats */
919 if (IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_BGR444) ||
920 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_BGR48) ||
921 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_BGR555) ||
922 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_BGR565) ||
923 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_GRAY16) ||
924 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_RGB444) ||
925 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_RGB48) ||
926 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_RGB555) ||
927 IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_RGB565))
928 c->swScale = packed_16bpc_bswap;
930 if (usePal(srcFormat) && isByteRGB(dstFormat))
931 c->swScale = palToRgbWrapper;
933 if (srcFormat == PIX_FMT_YUV422P) {
934 if (dstFormat == PIX_FMT_YUYV422)
935 c->swScale = yuv422pToYuy2Wrapper;
936 else if (dstFormat == PIX_FMT_UYVY422)
937 c->swScale = yuv422pToUyvyWrapper;
940 /* LQ converters if -sws 0 or -sws 4*/
941 if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)) {
943 if (srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) {
944 if (dstFormat == PIX_FMT_YUYV422)
945 c->swScale = planarToYuy2Wrapper;
946 else if (dstFormat == PIX_FMT_UYVY422)
947 c->swScale = planarToUyvyWrapper;
950 if (srcFormat == PIX_FMT_YUYV422 &&
951 (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))
952 c->swScale = yuyvToYuv420Wrapper;
953 if (srcFormat == PIX_FMT_UYVY422 &&
954 (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))
955 c->swScale = uyvyToYuv420Wrapper;
956 if (srcFormat == PIX_FMT_YUYV422 && dstFormat == PIX_FMT_YUV422P)
957 c->swScale = yuyvToYuv422Wrapper;
958 if (srcFormat == PIX_FMT_UYVY422 && dstFormat == PIX_FMT_YUV422P)
959 c->swScale = uyvyToYuv422Wrapper;
961 #define isPlanarGray(x) (isGray(x) && (x) != PIX_FMT_GRAY8A)
963 if ( srcFormat == dstFormat ||
964 (srcFormat == PIX_FMT_YUVA420P && dstFormat == PIX_FMT_YUV420P) ||
965 (srcFormat == PIX_FMT_YUV420P && dstFormat == PIX_FMT_YUVA420P) ||
966 (isPlanarYUV(srcFormat) && isPlanarGray(dstFormat)) ||
967 (isPlanarYUV(dstFormat) && isPlanarGray(srcFormat)) ||
968 (isPlanarGray(dstFormat) && isPlanarGray(srcFormat)) ||
969 (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat) &&
970 c->chrDstHSubSample == c->chrSrcHSubSample &&
971 c->chrDstVSubSample == c->chrSrcVSubSample &&
972 dstFormat != PIX_FMT_NV12 && dstFormat != PIX_FMT_NV21 &&
973 srcFormat != PIX_FMT_NV12 && srcFormat != PIX_FMT_NV21))
975 if (isPacked(c->srcFormat))
976 c->swScale = packedCopyWrapper;
977 else /* Planar YUV or gray */
978 c->swScale = planarCopyWrapper;
982 ff_bfin_get_unscaled_swscale(c);
984 ff_swscale_get_unscaled_altivec(c);
987 static void reset_ptr(const uint8_t *src[], int format)
989 if (!isALPHA(format))
991 if (!isPlanar(format)) {
992 src[3] = src[2] = NULL;
999 static int check_image_pointers(const uint8_t * const data[4], enum PixelFormat pix_fmt,
1000 const int linesizes[4])
1002 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
1005 for (i = 0; i < 4; i++) {
1006 int plane = desc->comp[i].plane;
1007 if (!data[plane] || !linesizes[plane])
1015 * swscale wrapper, so we don't need to export the SwsContext.
1016 * Assumes planar YUV to be in YUV order instead of YVU.
1018 int attribute_align_arg sws_scale(struct SwsContext *c,
1019 const uint8_t * const srcSlice[],
1020 const int srcStride[], int srcSliceY,
1021 int srcSliceH, uint8_t *const dst[],
1022 const int dstStride[])
1025 const uint8_t *src2[4] = { srcSlice[0], srcSlice[1], srcSlice[2], srcSlice[3] };
1026 uint8_t *dst2[4] = { dst[0], dst[1], dst[2], dst[3] };
1027 uint8_t *rgb0_tmp = NULL;
1029 // do not mess up sliceDir if we have a "trailing" 0-size slice
1033 if (!check_image_pointers(srcSlice, c->srcFormat, srcStride)) {
1034 av_log(c, AV_LOG_ERROR, "bad src image pointers\n");
1037 if (!check_image_pointers((const uint8_t* const*)dst, c->dstFormat, dstStride)) {
1038 av_log(c, AV_LOG_ERROR, "bad dst image pointers\n");
1042 if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
1043 av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");
1046 if (c->sliceDir == 0) {
1047 if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;
1050 if (usePal(c->srcFormat)) {
1051 for (i = 0; i < 256; i++) {
1052 int p, r, g, b, y, u, v, a = 0xff;
1053 if (c->srcFormat == PIX_FMT_PAL8) {
1054 p = ((const uint32_t *)(srcSlice[1]))[i];
1055 a = (p >> 24) & 0xFF;
1056 r = (p >> 16) & 0xFF;
1057 g = (p >> 8) & 0xFF;
1059 } else if (c->srcFormat == PIX_FMT_RGB8) {
1060 r = ( i >> 5 ) * 36;
1061 g = ((i >> 2) & 7) * 36;
1063 } else if (c->srcFormat == PIX_FMT_BGR8) {
1064 b = ( i >> 6 ) * 85;
1065 g = ((i >> 3) & 7) * 36;
1067 } else if (c->srcFormat == PIX_FMT_RGB4_BYTE) {
1068 r = ( i >> 3 ) * 255;
1069 g = ((i >> 1) & 3) * 85;
1071 } else if (c->srcFormat == PIX_FMT_GRAY8 || c->srcFormat == PIX_FMT_GRAY8A) {
1074 assert(c->srcFormat == PIX_FMT_BGR4_BYTE);
1075 b = ( i >> 3 ) * 255;
1076 g = ((i >> 1) & 3) * 85;
1079 y = av_clip_uint8((RY * r + GY * g + BY * b + ( 33 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
1080 u = av_clip_uint8((RU * r + GU * g + BU * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
1081 v = av_clip_uint8((RV * r + GV * g + BV * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
1082 c->pal_yuv[i]= y + (u<<8) + (v<<16) + (a<<24);
1084 switch (c->dstFormat) {
1089 c->pal_rgb[i]= r + (g<<8) + (b<<16) + (a<<24);
1091 case PIX_FMT_BGR32_1:
1095 c->pal_rgb[i]= a + (r<<8) + (g<<16) + (b<<24);
1097 case PIX_FMT_RGB32_1:
1101 c->pal_rgb[i]= a + (b<<8) + (g<<16) + (r<<24);
1108 c->pal_rgb[i]= b + (g<<8) + (r<<16) + (a<<24);
1113 if (c->src0Alpha && !c->dst0Alpha && isALPHA(c->dstFormat)) {
1116 rgb0_tmp = av_malloc(FFABS(srcStride[0]) * srcSliceH + 32);
1117 base = srcStride[0] < 0 ? rgb0_tmp - srcStride[0] * (srcSliceH-1) : rgb0_tmp;
1118 for (y=0; y<srcSliceH; y++){
1119 memcpy(base + srcStride[0]*y, src2[0] + srcStride[0]*y, 4*c->srcW);
1120 for (x=c->src0Alpha-1; x<4*c->srcW; x+=4) {
1121 base[ srcStride[0]*y + x] = 0xFF;
1127 // copy strides, so they can safely be modified
1128 if (c->sliceDir == 1) {
1129 // slices go from top to bottom
1130 int srcStride2[4] = { srcStride[0], srcStride[1], srcStride[2],
1132 int dstStride2[4] = { dstStride[0], dstStride[1], dstStride[2],
1135 reset_ptr(src2, c->srcFormat);
1136 reset_ptr((void*)dst2, c->dstFormat);
1138 /* reset slice direction at end of frame */
1139 if (srcSliceY + srcSliceH == c->srcH)
1142 ret = c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2,
1145 // slices go from bottom to top => we flip the image internally
1146 int srcStride2[4] = { -srcStride[0], -srcStride[1], -srcStride[2],
1148 int dstStride2[4] = { -dstStride[0], -dstStride[1], -dstStride[2],
1151 src2[0] += (srcSliceH - 1) * srcStride[0];
1152 if (!usePal(c->srcFormat))
1153 src2[1] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[1];
1154 src2[2] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[2];
1155 src2[3] += (srcSliceH - 1) * srcStride[3];
1156 dst2[0] += ( c->dstH - 1) * dstStride[0];
1157 dst2[1] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[1];
1158 dst2[2] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[2];
1159 dst2[3] += ( c->dstH - 1) * dstStride[3];
1161 reset_ptr(src2, c->srcFormat);
1162 reset_ptr((void*)dst2, c->dstFormat);
1164 /* reset slice direction at end of frame */
1168 ret = c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH,
1169 srcSliceH, dst2, dstStride2);
1176 /* Convert the palette to the same packed 32-bit format as the palette */
1177 void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst,
1178 int num_pixels, const uint8_t *palette)
1182 for (i = 0; i < num_pixels; i++)
1183 ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i]];
1186 /* Palette format: ABCD -> dst format: ABC */
1187 void sws_convertPalette8ToPacked24(const uint8_t *src, uint8_t *dst,
1188 int num_pixels, const uint8_t *palette)
1192 for (i = 0; i < num_pixels; i++) {
1194 dst[0] = palette[src[i] * 4 + 0];
1195 dst[1] = palette[src[i] * 4 + 1];
1196 dst[2] = palette[src[i] * 4 + 2];