Reindent after last commit.
[libav.git] / libswscale / swscale.c
1 /*
2 * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
3 *
4 * This file is part of FFmpeg.
5 *
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.
10 *
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.
15 *
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
19 */
20
21 /*
22 supported Input formats: YV12, I420/IYUV, YUY2, UYVY, BGR32, BGR32_1, BGR24, BGR16, BGR15, RGB32, RGB32_1, RGB24, Y8/Y800, YVU9/IF09, PAL8
23 supported output formats: YV12, I420/IYUV, YUY2, UYVY, {BGR,RGB}{1,4,8,15,16,24,32}, Y8/Y800, YVU9/IF09
24 {BGR,RGB}{1,4,8,15,16} support dithering
25
26 unscaled special converters (YV12=I420=IYUV, Y800=Y8)
27 YV12 -> {BGR,RGB}{1,4,8,12,15,16,24,32}
28 x -> x
29 YUV9 -> YV12
30 YUV9/YV12 -> Y800
31 Y800 -> YUV9/YV12
32 BGR24 -> BGR32 & RGB24 -> RGB32
33 BGR32 -> BGR24 & RGB32 -> RGB24
34 BGR15 -> BGR16
35 */
36
37 /*
38 tested special converters (most are tested actually, but I did not write it down ...)
39 YV12 -> BGR12/BGR16
40 YV12 -> YV12
41 BGR15 -> BGR16
42 BGR16 -> BGR16
43 YVU9 -> YV12
44
45 untested special converters
46 YV12/I420 -> BGR15/BGR24/BGR32 (it is the yuv2rgb stuff, so it should be OK)
47 YV12/I420 -> YV12/I420
48 YUY2/BGR15/BGR24/BGR32/RGB24/RGB32 -> same format
49 BGR24 -> BGR32 & RGB24 -> RGB32
50 BGR32 -> BGR24 & RGB32 -> RGB24
51 BGR24 -> YV12
52 */
53
54 #include <inttypes.h>
55 #include <string.h>
56 #include <math.h>
57 #include <stdio.h>
58 #include "config.h"
59 #include <assert.h>
60 #include "swscale.h"
61 #include "swscale_internal.h"
62 #include "rgb2rgb.h"
63 #include "libavutil/intreadwrite.h"
64 #include "libavutil/x86_cpu.h"
65 #include "libavutil/avutil.h"
66 #include "libavutil/mathematics.h"
67 #include "libavutil/bswap.h"
68 #include "libavutil/pixdesc.h"
69
70 #undef MOVNTQ
71 #undef PAVGB
72
73 //#undef HAVE_MMX2
74 //#define HAVE_AMD3DNOW
75 //#undef HAVE_MMX
76 //#undef ARCH_X86
77 #define DITHER1XBPP
78
79 #define FAST_BGR2YV12 // use 7 bit coefficients instead of 15 bit
80
81 #define isPacked(x) ( \
82 (x)==PIX_FMT_PAL8 \
83 || (x)==PIX_FMT_YUYV422 \
84 || (x)==PIX_FMT_UYVY422 \
85 || isAnyRGB(x) \
86 )
87
88 #define RGB2YUV_SHIFT 15
89 #define BY ( (int)(0.114*219/255*(1<<RGB2YUV_SHIFT)+0.5))
90 #define BV (-(int)(0.081*224/255*(1<<RGB2YUV_SHIFT)+0.5))
91 #define BU ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5))
92 #define GY ( (int)(0.587*219/255*(1<<RGB2YUV_SHIFT)+0.5))
93 #define GV (-(int)(0.419*224/255*(1<<RGB2YUV_SHIFT)+0.5))
94 #define GU (-(int)(0.331*224/255*(1<<RGB2YUV_SHIFT)+0.5))
95 #define RY ( (int)(0.299*219/255*(1<<RGB2YUV_SHIFT)+0.5))
96 #define RV ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5))
97 #define RU (-(int)(0.169*224/255*(1<<RGB2YUV_SHIFT)+0.5))
98
99 static const double rgb2yuv_table[8][9]={
100 {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5}, //ITU709
101 {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5}, //ITU709
102 {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //DEFAULT / ITU601 / ITU624 / SMPTE 170M
103 {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //DEFAULT / ITU601 / ITU624 / SMPTE 170M
104 {0.59 , 0.11 , 0.30 , -0.331, 0.5, -0.169, -0.421, -0.079, 0.5}, //FCC
105 {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //DEFAULT / ITU601 / ITU624 / SMPTE 170M
106 {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //DEFAULT / ITU601 / ITU624 / SMPTE 170M
107 {0.701 , 0.087 , 0.212 , -0.384, 0.5, -0.116, -0.445, -0.055, 0.5}, //SMPTE 240M
108 };
109
110 /*
111 NOTES
112 Special versions: fast Y 1:1 scaling (no interpolation in y direction)
113
114 TODO
115 more intelligent misalignment avoidance for the horizontal scaler
116 write special vertical cubic upscale version
117 optimize C code (YV12 / minmax)
118 add support for packed pixel YUV input & output
119 add support for Y8 output
120 optimize BGR24 & BGR32
121 add BGR4 output support
122 write special BGR->BGR scaler
123 */
124
125 #if ARCH_X86
126 DECLARE_ASM_CONST(8, uint64_t, bF8)= 0xF8F8F8F8F8F8F8F8LL;
127 DECLARE_ASM_CONST(8, uint64_t, bFC)= 0xFCFCFCFCFCFCFCFCLL;
128 DECLARE_ASM_CONST(8, uint64_t, w10)= 0x0010001000100010LL;
129 DECLARE_ASM_CONST(8, uint64_t, w02)= 0x0002000200020002LL;
130 DECLARE_ASM_CONST(8, uint64_t, bm00001111)=0x00000000FFFFFFFFLL;
131 DECLARE_ASM_CONST(8, uint64_t, bm00000111)=0x0000000000FFFFFFLL;
132 DECLARE_ASM_CONST(8, uint64_t, bm11111000)=0xFFFFFFFFFF000000LL;
133 DECLARE_ASM_CONST(8, uint64_t, bm01010101)=0x00FF00FF00FF00FFLL;
134
135 const DECLARE_ALIGNED(8, uint64_t, ff_dither4)[2] = {
136 0x0103010301030103LL,
137 0x0200020002000200LL,};
138
139 const DECLARE_ALIGNED(8, uint64_t, ff_dither8)[2] = {
140 0x0602060206020602LL,
141 0x0004000400040004LL,};
142
143 DECLARE_ASM_CONST(8, uint64_t, b16Mask)= 0x001F001F001F001FLL;
144 DECLARE_ASM_CONST(8, uint64_t, g16Mask)= 0x07E007E007E007E0LL;
145 DECLARE_ASM_CONST(8, uint64_t, r16Mask)= 0xF800F800F800F800LL;
146 DECLARE_ASM_CONST(8, uint64_t, b15Mask)= 0x001F001F001F001FLL;
147 DECLARE_ASM_CONST(8, uint64_t, g15Mask)= 0x03E003E003E003E0LL;
148 DECLARE_ASM_CONST(8, uint64_t, r15Mask)= 0x7C007C007C007C00LL;
149
150 DECLARE_ALIGNED(8, const uint64_t, ff_M24A) = 0x00FF0000FF0000FFLL;
151 DECLARE_ALIGNED(8, const uint64_t, ff_M24B) = 0xFF0000FF0000FF00LL;
152 DECLARE_ALIGNED(8, const uint64_t, ff_M24C) = 0x0000FF0000FF0000LL;
153
154 #ifdef FAST_BGR2YV12
155 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YCoeff) = 0x000000210041000DULL;
156 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UCoeff) = 0x0000FFEEFFDC0038ULL;
157 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2VCoeff) = 0x00000038FFD2FFF8ULL;
158 #else
159 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YCoeff) = 0x000020E540830C8BULL;
160 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UCoeff) = 0x0000ED0FDAC23831ULL;
161 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2VCoeff) = 0x00003831D0E6F6EAULL;
162 #endif /* FAST_BGR2YV12 */
163 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YOffset) = 0x1010101010101010ULL;
164 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UVOffset) = 0x8080808080808080ULL;
165 DECLARE_ALIGNED(8, const uint64_t, ff_w1111) = 0x0001000100010001ULL;
166
167 DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toY1Coeff) = 0x0C88000040870C88ULL;
168 DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toY2Coeff) = 0x20DE4087000020DEULL;
169 DECLARE_ASM_CONST(8, uint64_t, ff_rgb24toY1Coeff) = 0x20DE0000408720DEULL;
170 DECLARE_ASM_CONST(8, uint64_t, ff_rgb24toY2Coeff) = 0x0C88408700000C88ULL;
171 DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toYOffset) = 0x0008400000084000ULL;
172
173 DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toUV)[2][4] = {
174 {0x38380000DAC83838ULL, 0xECFFDAC80000ECFFULL, 0xF6E40000D0E3F6E4ULL, 0x3838D0E300003838ULL},
175 {0xECFF0000DAC8ECFFULL, 0x3838DAC800003838ULL, 0x38380000D0E33838ULL, 0xF6E4D0E30000F6E4ULL},
176 };
177
178 DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toUVOffset)= 0x0040400000404000ULL;
179
180 #endif /* ARCH_X86 */
181
182 DECLARE_ALIGNED(8, static const uint8_t, dither_2x2_4)[2][8]={
183 { 1, 3, 1, 3, 1, 3, 1, 3, },
184 { 2, 0, 2, 0, 2, 0, 2, 0, },
185 };
186
187 DECLARE_ALIGNED(8, static const uint8_t, dither_2x2_8)[2][8]={
188 { 6, 2, 6, 2, 6, 2, 6, 2, },
189 { 0, 4, 0, 4, 0, 4, 0, 4, },
190 };
191
192 DECLARE_ALIGNED(8, const uint8_t, dither_4x4_16)[4][8]={
193 { 8, 4, 11, 7, 8, 4, 11, 7, },
194 { 2, 14, 1, 13, 2, 14, 1, 13, },
195 { 10, 6, 9, 5, 10, 6, 9, 5, },
196 { 0, 12, 3, 15, 0, 12, 3, 15, },
197 };
198
199 DECLARE_ALIGNED(8, const uint8_t, dither_8x8_32)[8][8]={
200 { 17, 9, 23, 15, 16, 8, 22, 14, },
201 { 5, 29, 3, 27, 4, 28, 2, 26, },
202 { 21, 13, 19, 11, 20, 12, 18, 10, },
203 { 0, 24, 6, 30, 1, 25, 7, 31, },
204 { 16, 8, 22, 14, 17, 9, 23, 15, },
205 { 4, 28, 2, 26, 5, 29, 3, 27, },
206 { 20, 12, 18, 10, 21, 13, 19, 11, },
207 { 1, 25, 7, 31, 0, 24, 6, 30, },
208 };
209
210 DECLARE_ALIGNED(8, const uint8_t, dither_8x8_73)[8][8]={
211 { 0, 55, 14, 68, 3, 58, 17, 72, },
212 { 37, 18, 50, 32, 40, 22, 54, 35, },
213 { 9, 64, 5, 59, 13, 67, 8, 63, },
214 { 46, 27, 41, 23, 49, 31, 44, 26, },
215 { 2, 57, 16, 71, 1, 56, 15, 70, },
216 { 39, 21, 52, 34, 38, 19, 51, 33, },
217 { 11, 66, 7, 62, 10, 65, 6, 60, },
218 { 48, 30, 43, 25, 47, 29, 42, 24, },
219 };
220
221 #if 1
222 DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220)[8][8]={
223 {117, 62, 158, 103, 113, 58, 155, 100, },
224 { 34, 199, 21, 186, 31, 196, 17, 182, },
225 {144, 89, 131, 76, 141, 86, 127, 72, },
226 { 0, 165, 41, 206, 10, 175, 52, 217, },
227 {110, 55, 151, 96, 120, 65, 162, 107, },
228 { 28, 193, 14, 179, 38, 203, 24, 189, },
229 {138, 83, 124, 69, 148, 93, 134, 79, },
230 { 7, 172, 48, 213, 3, 168, 45, 210, },
231 };
232 #elif 1
233 // tries to correct a gamma of 1.5
234 DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220)[8][8]={
235 { 0, 143, 18, 200, 2, 156, 25, 215, },
236 { 78, 28, 125, 64, 89, 36, 138, 74, },
237 { 10, 180, 3, 161, 16, 195, 8, 175, },
238 {109, 51, 93, 38, 121, 60, 105, 47, },
239 { 1, 152, 23, 210, 0, 147, 20, 205, },
240 { 85, 33, 134, 71, 81, 30, 130, 67, },
241 { 14, 190, 6, 171, 12, 185, 5, 166, },
242 {117, 57, 101, 44, 113, 54, 97, 41, },
243 };
244 #elif 1
245 // tries to correct a gamma of 2.0
246 DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220)[8][8]={
247 { 0, 124, 8, 193, 0, 140, 12, 213, },
248 { 55, 14, 104, 42, 66, 19, 119, 52, },
249 { 3, 168, 1, 145, 6, 187, 3, 162, },
250 { 86, 31, 70, 21, 99, 39, 82, 28, },
251 { 0, 134, 11, 206, 0, 129, 9, 200, },
252 { 62, 17, 114, 48, 58, 16, 109, 45, },
253 { 5, 181, 2, 157, 4, 175, 1, 151, },
254 { 95, 36, 78, 26, 90, 34, 74, 24, },
255 };
256 #else
257 // tries to correct a gamma of 2.5
258 DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220)[8][8]={
259 { 0, 107, 3, 187, 0, 125, 6, 212, },
260 { 39, 7, 86, 28, 49, 11, 102, 36, },
261 { 1, 158, 0, 131, 3, 180, 1, 151, },
262 { 68, 19, 52, 12, 81, 25, 64, 17, },
263 { 0, 119, 5, 203, 0, 113, 4, 195, },
264 { 45, 9, 96, 33, 42, 8, 91, 30, },
265 { 2, 172, 1, 144, 2, 165, 0, 137, },
266 { 77, 23, 60, 15, 72, 21, 56, 14, },
267 };
268 #endif
269
270 static av_always_inline void yuv2yuvX16inC_template(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
271 const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
272 const int16_t **alpSrc, uint16_t *dest, uint16_t *uDest, uint16_t *vDest, uint16_t *aDest,
273 int dstW, int chrDstW, int big_endian)
274 {
275 //FIXME Optimize (just quickly written not optimized..)
276 int i;
277
278 for (i = 0; i < dstW; i++) {
279 int val = 1 << 10;
280 int j;
281
282 for (j = 0; j < lumFilterSize; j++)
283 val += lumSrc[j][i] * lumFilter[j];
284
285 if (big_endian) {
286 AV_WB16(&dest[i], av_clip_uint16(val >> 11));
287 } else {
288 AV_WL16(&dest[i], av_clip_uint16(val >> 11));
289 }
290 }
291
292 if (uDest) {
293 for (i = 0; i < chrDstW; i++) {
294 int u = 1 << 10;
295 int v = 1 << 10;
296 int j;
297
298 for (j = 0; j < chrFilterSize; j++) {
299 u += chrSrc[j][i ] * chrFilter[j];
300 v += chrSrc[j][i + VOFW] * chrFilter[j];
301 }
302
303 if (big_endian) {
304 AV_WB16(&uDest[i], av_clip_uint16(u >> 11));
305 AV_WB16(&vDest[i], av_clip_uint16(v >> 11));
306 } else {
307 AV_WL16(&uDest[i], av_clip_uint16(u >> 11));
308 AV_WL16(&vDest[i], av_clip_uint16(v >> 11));
309 }
310 }
311 }
312
313 if (CONFIG_SWSCALE_ALPHA && aDest) {
314 for (i = 0; i < dstW; i++) {
315 int val = 1 << 10;
316 int j;
317
318 for (j = 0; j < lumFilterSize; j++)
319 val += alpSrc[j][i] * lumFilter[j];
320
321 if (big_endian) {
322 AV_WB16(&aDest[i], av_clip_uint16(val >> 11));
323 } else {
324 AV_WL16(&aDest[i], av_clip_uint16(val >> 11));
325 }
326 }
327 }
328 }
329
330 static inline void yuv2yuvX16inC(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
331 const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
332 const int16_t **alpSrc, uint16_t *dest, uint16_t *uDest, uint16_t *vDest, uint16_t *aDest, int dstW, int chrDstW,
333 enum PixelFormat dstFormat)
334 {
335 if (isBE(dstFormat)) {
336 yuv2yuvX16inC_template(lumFilter, lumSrc, lumFilterSize,
337 chrFilter, chrSrc, chrFilterSize,
338 alpSrc,
339 dest, uDest, vDest, aDest,
340 dstW, chrDstW, 1);
341 } else {
342 yuv2yuvX16inC_template(lumFilter, lumSrc, lumFilterSize,
343 chrFilter, chrSrc, chrFilterSize,
344 alpSrc,
345 dest, uDest, vDest, aDest,
346 dstW, chrDstW, 0);
347 }
348 }
349
350 static inline void yuv2yuvXinC(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
351 const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
352 const int16_t **alpSrc, uint8_t *dest, uint8_t *uDest, uint8_t *vDest, uint8_t *aDest, int dstW, int chrDstW)
353 {
354 //FIXME Optimize (just quickly written not optimized..)
355 int i;
356 for (i=0; i<dstW; i++) {
357 int val=1<<18;
358 int j;
359 for (j=0; j<lumFilterSize; j++)
360 val += lumSrc[j][i] * lumFilter[j];
361
362 dest[i]= av_clip_uint8(val>>19);
363 }
364
365 if (uDest)
366 for (i=0; i<chrDstW; i++) {
367 int u=1<<18;
368 int v=1<<18;
369 int j;
370 for (j=0; j<chrFilterSize; j++) {
371 u += chrSrc[j][i] * chrFilter[j];
372 v += chrSrc[j][i + VOFW] * chrFilter[j];
373 }
374
375 uDest[i]= av_clip_uint8(u>>19);
376 vDest[i]= av_clip_uint8(v>>19);
377 }
378
379 if (CONFIG_SWSCALE_ALPHA && aDest)
380 for (i=0; i<dstW; i++) {
381 int val=1<<18;
382 int j;
383 for (j=0; j<lumFilterSize; j++)
384 val += alpSrc[j][i] * lumFilter[j];
385
386 aDest[i]= av_clip_uint8(val>>19);
387 }
388
389 }
390
391 static inline void yuv2nv12XinC(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
392 const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
393 uint8_t *dest, uint8_t *uDest, int dstW, int chrDstW, int dstFormat)
394 {
395 //FIXME Optimize (just quickly written not optimized..)
396 int i;
397 for (i=0; i<dstW; i++) {
398 int val=1<<18;
399 int j;
400 for (j=0; j<lumFilterSize; j++)
401 val += lumSrc[j][i] * lumFilter[j];
402
403 dest[i]= av_clip_uint8(val>>19);
404 }
405
406 if (!uDest)
407 return;
408
409 if (dstFormat == PIX_FMT_NV12)
410 for (i=0; i<chrDstW; i++) {
411 int u=1<<18;
412 int v=1<<18;
413 int j;
414 for (j=0; j<chrFilterSize; j++) {
415 u += chrSrc[j][i] * chrFilter[j];
416 v += chrSrc[j][i + VOFW] * chrFilter[j];
417 }
418
419 uDest[2*i]= av_clip_uint8(u>>19);
420 uDest[2*i+1]= av_clip_uint8(v>>19);
421 }
422 else
423 for (i=0; i<chrDstW; i++) {
424 int u=1<<18;
425 int v=1<<18;
426 int j;
427 for (j=0; j<chrFilterSize; j++) {
428 u += chrSrc[j][i] * chrFilter[j];
429 v += chrSrc[j][i + VOFW] * chrFilter[j];
430 }
431
432 uDest[2*i]= av_clip_uint8(v>>19);
433 uDest[2*i+1]= av_clip_uint8(u>>19);
434 }
435 }
436
437 #define YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha) \
438 for (i=0; i<(dstW>>1); i++) {\
439 int j;\
440 int Y1 = 1<<18;\
441 int Y2 = 1<<18;\
442 int U = 1<<18;\
443 int V = 1<<18;\
444 int av_unused A1, A2;\
445 type av_unused *r, *b, *g;\
446 const int i2= 2*i;\
447 \
448 for (j=0; j<lumFilterSize; j++) {\
449 Y1 += lumSrc[j][i2] * lumFilter[j];\
450 Y2 += lumSrc[j][i2+1] * lumFilter[j];\
451 }\
452 for (j=0; j<chrFilterSize; j++) {\
453 U += chrSrc[j][i] * chrFilter[j];\
454 V += chrSrc[j][i+VOFW] * chrFilter[j];\
455 }\
456 Y1>>=19;\
457 Y2>>=19;\
458 U >>=19;\
459 V >>=19;\
460 if (alpha) {\
461 A1 = 1<<18;\
462 A2 = 1<<18;\
463 for (j=0; j<lumFilterSize; j++) {\
464 A1 += alpSrc[j][i2 ] * lumFilter[j];\
465 A2 += alpSrc[j][i2+1] * lumFilter[j];\
466 }\
467 A1>>=19;\
468 A2>>=19;\
469 }
470
471 #define YSCALE_YUV_2_PACKEDX_C(type,alpha) \
472 YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha)\
473 if ((Y1|Y2|U|V)&256) {\
474 if (Y1>255) Y1=255; \
475 else if (Y1<0)Y1=0; \
476 if (Y2>255) Y2=255; \
477 else if (Y2<0)Y2=0; \
478 if (U>255) U=255; \
479 else if (U<0) U=0; \
480 if (V>255) V=255; \
481 else if (V<0) V=0; \
482 }\
483 if (alpha && ((A1|A2)&256)) {\
484 A1=av_clip_uint8(A1);\
485 A2=av_clip_uint8(A2);\
486 }
487
488 #define YSCALE_YUV_2_PACKEDX_FULL_C(rnd,alpha) \
489 for (i=0; i<dstW; i++) {\
490 int j;\
491 int Y = 0;\
492 int U = -128<<19;\
493 int V = -128<<19;\
494 int av_unused A;\
495 int R,G,B;\
496 \
497 for (j=0; j<lumFilterSize; j++) {\
498 Y += lumSrc[j][i ] * lumFilter[j];\
499 }\
500 for (j=0; j<chrFilterSize; j++) {\
501 U += chrSrc[j][i ] * chrFilter[j];\
502 V += chrSrc[j][i+VOFW] * chrFilter[j];\
503 }\
504 Y >>=10;\
505 U >>=10;\
506 V >>=10;\
507 if (alpha) {\
508 A = rnd;\
509 for (j=0; j<lumFilterSize; j++)\
510 A += alpSrc[j][i ] * lumFilter[j];\
511 A >>=19;\
512 if (A&256)\
513 A = av_clip_uint8(A);\
514 }
515
516 #define YSCALE_YUV_2_RGBX_FULL_C(rnd,alpha) \
517 YSCALE_YUV_2_PACKEDX_FULL_C(rnd>>3,alpha)\
518 Y-= c->yuv2rgb_y_offset;\
519 Y*= c->yuv2rgb_y_coeff;\
520 Y+= rnd;\
521 R= Y + V*c->yuv2rgb_v2r_coeff;\
522 G= Y + V*c->yuv2rgb_v2g_coeff + U*c->yuv2rgb_u2g_coeff;\
523 B= Y + U*c->yuv2rgb_u2b_coeff;\
524 if ((R|G|B)&(0xC0000000)) {\
525 if (R>=(256<<22)) R=(256<<22)-1; \
526 else if (R<0)R=0; \
527 if (G>=(256<<22)) G=(256<<22)-1; \
528 else if (G<0)G=0; \
529 if (B>=(256<<22)) B=(256<<22)-1; \
530 else if (B<0)B=0; \
531 }
532
533 #define YSCALE_YUV_2_GRAY16_C \
534 for (i=0; i<(dstW>>1); i++) {\
535 int j;\
536 int Y1 = 1<<18;\
537 int Y2 = 1<<18;\
538 int U = 1<<18;\
539 int V = 1<<18;\
540 \
541 const int i2= 2*i;\
542 \
543 for (j=0; j<lumFilterSize; j++) {\
544 Y1 += lumSrc[j][i2] * lumFilter[j];\
545 Y2 += lumSrc[j][i2+1] * lumFilter[j];\
546 }\
547 Y1>>=11;\
548 Y2>>=11;\
549 if ((Y1|Y2|U|V)&65536) {\
550 if (Y1>65535) Y1=65535; \
551 else if (Y1<0)Y1=0; \
552 if (Y2>65535) Y2=65535; \
553 else if (Y2<0)Y2=0; \
554 }
555
556 #define YSCALE_YUV_2_RGBX_C(type,alpha) \
557 YSCALE_YUV_2_PACKEDX_C(type,alpha) /* FIXME fix tables so that clipping is not needed and then use _NOCLIP*/\
558 r = (type *)c->table_rV[V]; \
559 g = (type *)(c->table_gU[U] + c->table_gV[V]); \
560 b = (type *)c->table_bU[U];
561
562 #define YSCALE_YUV_2_PACKED2_C(type,alpha) \
563 for (i=0; i<(dstW>>1); i++) { \
564 const int i2= 2*i; \
565 int Y1= (buf0[i2 ]*yalpha1+buf1[i2 ]*yalpha)>>19; \
566 int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>19; \
567 int U= (uvbuf0[i ]*uvalpha1+uvbuf1[i ]*uvalpha)>>19; \
568 int V= (uvbuf0[i+VOFW]*uvalpha1+uvbuf1[i+VOFW]*uvalpha)>>19; \
569 type av_unused *r, *b, *g; \
570 int av_unused A1, A2; \
571 if (alpha) {\
572 A1= (abuf0[i2 ]*yalpha1+abuf1[i2 ]*yalpha)>>19; \
573 A2= (abuf0[i2+1]*yalpha1+abuf1[i2+1]*yalpha)>>19; \
574 }
575
576 #define YSCALE_YUV_2_GRAY16_2_C \
577 for (i=0; i<(dstW>>1); i++) { \
578 const int i2= 2*i; \
579 int Y1= (buf0[i2 ]*yalpha1+buf1[i2 ]*yalpha)>>11; \
580 int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>11;
581
582 #define YSCALE_YUV_2_RGB2_C(type,alpha) \
583 YSCALE_YUV_2_PACKED2_C(type,alpha)\
584 r = (type *)c->table_rV[V];\
585 g = (type *)(c->table_gU[U] + c->table_gV[V]);\
586 b = (type *)c->table_bU[U];
587
588 #define YSCALE_YUV_2_PACKED1_C(type,alpha) \
589 for (i=0; i<(dstW>>1); i++) {\
590 const int i2= 2*i;\
591 int Y1= buf0[i2 ]>>7;\
592 int Y2= buf0[i2+1]>>7;\
593 int U= (uvbuf1[i ])>>7;\
594 int V= (uvbuf1[i+VOFW])>>7;\
595 type av_unused *r, *b, *g;\
596 int av_unused A1, A2;\
597 if (alpha) {\
598 A1= abuf0[i2 ]>>7;\
599 A2= abuf0[i2+1]>>7;\
600 }
601
602 #define YSCALE_YUV_2_GRAY16_1_C \
603 for (i=0; i<(dstW>>1); i++) {\
604 const int i2= 2*i;\
605 int Y1= buf0[i2 ]<<1;\
606 int Y2= buf0[i2+1]<<1;
607
608 #define YSCALE_YUV_2_RGB1_C(type,alpha) \
609 YSCALE_YUV_2_PACKED1_C(type,alpha)\
610 r = (type *)c->table_rV[V];\
611 g = (type *)(c->table_gU[U] + c->table_gV[V]);\
612 b = (type *)c->table_bU[U];
613
614 #define YSCALE_YUV_2_PACKED1B_C(type,alpha) \
615 for (i=0; i<(dstW>>1); i++) {\
616 const int i2= 2*i;\
617 int Y1= buf0[i2 ]>>7;\
618 int Y2= buf0[i2+1]>>7;\
619 int U= (uvbuf0[i ] + uvbuf1[i ])>>8;\
620 int V= (uvbuf0[i+VOFW] + uvbuf1[i+VOFW])>>8;\
621 type av_unused *r, *b, *g;\
622 int av_unused A1, A2;\
623 if (alpha) {\
624 A1= abuf0[i2 ]>>7;\
625 A2= abuf0[i2+1]>>7;\
626 }
627
628 #define YSCALE_YUV_2_RGB1B_C(type,alpha) \
629 YSCALE_YUV_2_PACKED1B_C(type,alpha)\
630 r = (type *)c->table_rV[V];\
631 g = (type *)(c->table_gU[U] + c->table_gV[V]);\
632 b = (type *)c->table_bU[U];
633
634 #define YSCALE_YUV_2_MONO2_C \
635 const uint8_t * const d128=dither_8x8_220[y&7];\
636 uint8_t *g= c->table_gU[128] + c->table_gV[128];\
637 for (i=0; i<dstW-7; i+=8) {\
638 int acc;\
639 acc = g[((buf0[i ]*yalpha1+buf1[i ]*yalpha)>>19) + d128[0]];\
640 acc+= acc + g[((buf0[i+1]*yalpha1+buf1[i+1]*yalpha)>>19) + d128[1]];\
641 acc+= acc + g[((buf0[i+2]*yalpha1+buf1[i+2]*yalpha)>>19) + d128[2]];\
642 acc+= acc + g[((buf0[i+3]*yalpha1+buf1[i+3]*yalpha)>>19) + d128[3]];\
643 acc+= acc + g[((buf0[i+4]*yalpha1+buf1[i+4]*yalpha)>>19) + d128[4]];\
644 acc+= acc + g[((buf0[i+5]*yalpha1+buf1[i+5]*yalpha)>>19) + d128[5]];\
645 acc+= acc + g[((buf0[i+6]*yalpha1+buf1[i+6]*yalpha)>>19) + d128[6]];\
646 acc+= acc + g[((buf0[i+7]*yalpha1+buf1[i+7]*yalpha)>>19) + d128[7]];\
647 ((uint8_t*)dest)[0]= c->dstFormat == PIX_FMT_MONOBLACK ? acc : ~acc;\
648 dest++;\
649 }
650
651 #define YSCALE_YUV_2_MONOX_C \
652 const uint8_t * const d128=dither_8x8_220[y&7];\
653 uint8_t *g= c->table_gU[128] + c->table_gV[128];\
654 int acc=0;\
655 for (i=0; i<dstW-1; i+=2) {\
656 int j;\
657 int Y1=1<<18;\
658 int Y2=1<<18;\
659 \
660 for (j=0; j<lumFilterSize; j++) {\
661 Y1 += lumSrc[j][i] * lumFilter[j];\
662 Y2 += lumSrc[j][i+1] * lumFilter[j];\
663 }\
664 Y1>>=19;\
665 Y2>>=19;\
666 if ((Y1|Y2)&256) {\
667 if (Y1>255) Y1=255;\
668 else if (Y1<0)Y1=0;\
669 if (Y2>255) Y2=255;\
670 else if (Y2<0)Y2=0;\
671 }\
672 acc+= acc + g[Y1+d128[(i+0)&7]];\
673 acc+= acc + g[Y2+d128[(i+1)&7]];\
674 if ((i&7)==6) {\
675 ((uint8_t*)dest)[0]= c->dstFormat == PIX_FMT_MONOBLACK ? acc : ~acc;\
676 dest++;\
677 }\
678 }
679
680 #define YSCALE_YUV_2_ANYRGB_C(func, func2, func_g16, func_monoblack)\
681 switch(c->dstFormat) {\
682 case PIX_FMT_RGB48BE:\
683 case PIX_FMT_RGB48LE:\
684 func(uint8_t,0)\
685 ((uint8_t*)dest)[ 0]= r[Y1];\
686 ((uint8_t*)dest)[ 1]= r[Y1];\
687 ((uint8_t*)dest)[ 2]= g[Y1];\
688 ((uint8_t*)dest)[ 3]= g[Y1];\
689 ((uint8_t*)dest)[ 4]= b[Y1];\
690 ((uint8_t*)dest)[ 5]= b[Y1];\
691 ((uint8_t*)dest)[ 6]= r[Y2];\
692 ((uint8_t*)dest)[ 7]= r[Y2];\
693 ((uint8_t*)dest)[ 8]= g[Y2];\
694 ((uint8_t*)dest)[ 9]= g[Y2];\
695 ((uint8_t*)dest)[10]= b[Y2];\
696 ((uint8_t*)dest)[11]= b[Y2];\
697 dest+=12;\
698 }\
699 break;\
700 case PIX_FMT_RGBA:\
701 case PIX_FMT_BGRA:\
702 if (CONFIG_SMALL) {\
703 int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;\
704 func(uint32_t,needAlpha)\
705 ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1] + (needAlpha ? (A1<<24) : 0);\
706 ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2] + (needAlpha ? (A2<<24) : 0);\
707 }\
708 } else {\
709 if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {\
710 func(uint32_t,1)\
711 ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1] + (A1<<24);\
712 ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2] + (A2<<24);\
713 }\
714 } else {\
715 func(uint32_t,0)\
716 ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];\
717 ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];\
718 }\
719 }\
720 }\
721 break;\
722 case PIX_FMT_ARGB:\
723 case PIX_FMT_ABGR:\
724 if (CONFIG_SMALL) {\
725 int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;\
726 func(uint32_t,needAlpha)\
727 ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1] + (needAlpha ? A1 : 0);\
728 ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2] + (needAlpha ? A2 : 0);\
729 }\
730 } else {\
731 if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {\
732 func(uint32_t,1)\
733 ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1] + A1;\
734 ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2] + A2;\
735 }\
736 } else {\
737 func(uint32_t,0)\
738 ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];\
739 ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];\
740 }\
741 }\
742 } \
743 break;\
744 case PIX_FMT_RGB24:\
745 func(uint8_t,0)\
746 ((uint8_t*)dest)[0]= r[Y1];\
747 ((uint8_t*)dest)[1]= g[Y1];\
748 ((uint8_t*)dest)[2]= b[Y1];\
749 ((uint8_t*)dest)[3]= r[Y2];\
750 ((uint8_t*)dest)[4]= g[Y2];\
751 ((uint8_t*)dest)[5]= b[Y2];\
752 dest+=6;\
753 }\
754 break;\
755 case PIX_FMT_BGR24:\
756 func(uint8_t,0)\
757 ((uint8_t*)dest)[0]= b[Y1];\
758 ((uint8_t*)dest)[1]= g[Y1];\
759 ((uint8_t*)dest)[2]= r[Y1];\
760 ((uint8_t*)dest)[3]= b[Y2];\
761 ((uint8_t*)dest)[4]= g[Y2];\
762 ((uint8_t*)dest)[5]= r[Y2];\
763 dest+=6;\
764 }\
765 break;\
766 case PIX_FMT_RGB565BE:\
767 case PIX_FMT_RGB565LE:\
768 case PIX_FMT_BGR565BE:\
769 case PIX_FMT_BGR565LE:\
770 {\
771 const int dr1= dither_2x2_8[y&1 ][0];\
772 const int dg1= dither_2x2_4[y&1 ][0];\
773 const int db1= dither_2x2_8[(y&1)^1][0];\
774 const int dr2= dither_2x2_8[y&1 ][1];\
775 const int dg2= dither_2x2_4[y&1 ][1];\
776 const int db2= dither_2x2_8[(y&1)^1][1];\
777 func(uint16_t,0)\
778 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
779 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
780 }\
781 }\
782 break;\
783 case PIX_FMT_RGB555BE:\
784 case PIX_FMT_RGB555LE:\
785 case PIX_FMT_BGR555BE:\
786 case PIX_FMT_BGR555LE:\
787 {\
788 const int dr1= dither_2x2_8[y&1 ][0];\
789 const int dg1= dither_2x2_8[y&1 ][1];\
790 const int db1= dither_2x2_8[(y&1)^1][0];\
791 const int dr2= dither_2x2_8[y&1 ][1];\
792 const int dg2= dither_2x2_8[y&1 ][0];\
793 const int db2= dither_2x2_8[(y&1)^1][1];\
794 func(uint16_t,0)\
795 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
796 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
797 }\
798 }\
799 break;\
800 case PIX_FMT_RGB444BE:\
801 case PIX_FMT_RGB444LE:\
802 case PIX_FMT_BGR444BE:\
803 case PIX_FMT_BGR444LE:\
804 {\
805 const int dr1= dither_4x4_16[y&3 ][0];\
806 const int dg1= dither_4x4_16[y&3 ][1];\
807 const int db1= dither_4x4_16[(y&3)^3][0];\
808 const int dr2= dither_4x4_16[y&3 ][1];\
809 const int dg2= dither_4x4_16[y&3 ][0];\
810 const int db2= dither_4x4_16[(y&3)^3][1];\
811 func(uint16_t,0)\
812 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
813 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
814 }\
815 }\
816 break;\
817 case PIX_FMT_RGB8:\
818 case PIX_FMT_BGR8:\
819 {\
820 const uint8_t * const d64= dither_8x8_73[y&7];\
821 const uint8_t * const d32= dither_8x8_32[y&7];\
822 func(uint8_t,0)\
823 ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];\
824 ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];\
825 }\
826 }\
827 break;\
828 case PIX_FMT_RGB4:\
829 case PIX_FMT_BGR4:\
830 {\
831 const uint8_t * const d64= dither_8x8_73 [y&7];\
832 const uint8_t * const d128=dither_8x8_220[y&7];\
833 func(uint8_t,0)\
834 ((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]\
835 + ((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);\
836 }\
837 }\
838 break;\
839 case PIX_FMT_RGB4_BYTE:\
840 case PIX_FMT_BGR4_BYTE:\
841 {\
842 const uint8_t * const d64= dither_8x8_73 [y&7];\
843 const uint8_t * const d128=dither_8x8_220[y&7];\
844 func(uint8_t,0)\
845 ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];\
846 ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];\
847 }\
848 }\
849 break;\
850 case PIX_FMT_MONOBLACK:\
851 case PIX_FMT_MONOWHITE:\
852 {\
853 func_monoblack\
854 }\
855 break;\
856 case PIX_FMT_YUYV422:\
857 func2\
858 ((uint8_t*)dest)[2*i2+0]= Y1;\
859 ((uint8_t*)dest)[2*i2+1]= U;\
860 ((uint8_t*)dest)[2*i2+2]= Y2;\
861 ((uint8_t*)dest)[2*i2+3]= V;\
862 } \
863 break;\
864 case PIX_FMT_UYVY422:\
865 func2\
866 ((uint8_t*)dest)[2*i2+0]= U;\
867 ((uint8_t*)dest)[2*i2+1]= Y1;\
868 ((uint8_t*)dest)[2*i2+2]= V;\
869 ((uint8_t*)dest)[2*i2+3]= Y2;\
870 } \
871 break;\
872 case PIX_FMT_GRAY16BE:\
873 func_g16\
874 ((uint8_t*)dest)[2*i2+0]= Y1>>8;\
875 ((uint8_t*)dest)[2*i2+1]= Y1;\
876 ((uint8_t*)dest)[2*i2+2]= Y2>>8;\
877 ((uint8_t*)dest)[2*i2+3]= Y2;\
878 } \
879 break;\
880 case PIX_FMT_GRAY16LE:\
881 func_g16\
882 ((uint8_t*)dest)[2*i2+0]= Y1;\
883 ((uint8_t*)dest)[2*i2+1]= Y1>>8;\
884 ((uint8_t*)dest)[2*i2+2]= Y2;\
885 ((uint8_t*)dest)[2*i2+3]= Y2>>8;\
886 } \
887 break;\
888 }
889
890 static inline void yuv2packedXinC(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
891 const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
892 const int16_t **alpSrc, uint8_t *dest, int dstW, int y)
893 {
894 int i;
895 YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGBX_C, YSCALE_YUV_2_PACKEDX_C(void,0), YSCALE_YUV_2_GRAY16_C, YSCALE_YUV_2_MONOX_C)
896 }
897
898 static inline void yuv2rgbXinC_full(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
899 const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
900 const int16_t **alpSrc, uint8_t *dest, int dstW, int y)
901 {
902 int i;
903 int step= c->dstFormatBpp/8;
904 int aidx= 3;
905
906 switch(c->dstFormat) {
907 case PIX_FMT_ARGB:
908 dest++;
909 aidx= 0;
910 case PIX_FMT_RGB24:
911 aidx--;
912 case PIX_FMT_RGBA:
913 if (CONFIG_SMALL) {
914 int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;
915 YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)
916 dest[aidx]= needAlpha ? A : 255;
917 dest[0]= R>>22;
918 dest[1]= G>>22;
919 dest[2]= B>>22;
920 dest+= step;
921 }
922 } else {
923 if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {
924 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)
925 dest[aidx]= A;
926 dest[0]= R>>22;
927 dest[1]= G>>22;
928 dest[2]= B>>22;
929 dest+= step;
930 }
931 } else {
932 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)
933 dest[aidx]= 255;
934 dest[0]= R>>22;
935 dest[1]= G>>22;
936 dest[2]= B>>22;
937 dest+= step;
938 }
939 }
940 }
941 break;
942 case PIX_FMT_ABGR:
943 dest++;
944 aidx= 0;
945 case PIX_FMT_BGR24:
946 aidx--;
947 case PIX_FMT_BGRA:
948 if (CONFIG_SMALL) {
949 int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;
950 YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)
951 dest[aidx]= needAlpha ? A : 255;
952 dest[0]= B>>22;
953 dest[1]= G>>22;
954 dest[2]= R>>22;
955 dest+= step;
956 }
957 } else {
958 if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {
959 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)
960 dest[aidx]= A;
961 dest[0]= B>>22;
962 dest[1]= G>>22;
963 dest[2]= R>>22;
964 dest+= step;
965 }
966 } else {
967 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)
968 dest[aidx]= 255;
969 dest[0]= B>>22;
970 dest[1]= G>>22;
971 dest[2]= R>>22;
972 dest+= step;
973 }
974 }
975 }
976 break;
977 default:
978 assert(0);
979 }
980 }
981
982 static void fillPlane(uint8_t* plane, int stride, int width, int height, int y, uint8_t val)
983 {
984 int i;
985 uint8_t *ptr = plane + stride*y;
986 for (i=0; i<height; i++) {
987 memset(ptr, val, width);
988 ptr += stride;
989 }
990 }
991
992 static inline void rgb48ToY(uint8_t *dst, const uint8_t *src, long width,
993 uint32_t *unused)
994 {
995 int i;
996 for (i = 0; i < width; i++) {
997 int r = src[i*6+0];
998 int g = src[i*6+2];
999 int b = src[i*6+4];
1000
1001 dst[i] = (RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;
1002 }
1003 }
1004
1005 static inline void rgb48ToUV(uint8_t *dstU, uint8_t *dstV,
1006 const uint8_t *src1, const uint8_t *src2,
1007 long width, uint32_t *unused)
1008 {
1009 int i;
1010 assert(src1==src2);
1011 for (i = 0; i < width; i++) {
1012 int r = src1[6*i + 0];
1013 int g = src1[6*i + 2];
1014 int b = src1[6*i + 4];
1015
1016 dstU[i] = (RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;
1017 dstV[i] = (RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;
1018 }
1019 }
1020
1021 static inline void rgb48ToUV_half(uint8_t *dstU, uint8_t *dstV,
1022 const uint8_t *src1, const uint8_t *src2,
1023 long width, uint32_t *unused)
1024 {
1025 int i;
1026 assert(src1==src2);
1027 for (i = 0; i < width; i++) {
1028 int r= src1[12*i + 0] + src1[12*i + 6];
1029 int g= src1[12*i + 2] + src1[12*i + 8];
1030 int b= src1[12*i + 4] + src1[12*i + 10];
1031
1032 dstU[i]= (RU*r + GU*g + BU*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);
1033 dstV[i]= (RV*r + GV*g + BV*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);
1034 }
1035 }
1036
1037 #define BGR2Y(type, name, shr, shg, shb, maskr, maskg, maskb, RY, GY, BY, S)\
1038 static inline void name(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)\
1039 {\
1040 int i;\
1041 for (i=0; i<width; i++) {\
1042 int b= (((const type*)src)[i]>>shb)&maskb;\
1043 int g= (((const type*)src)[i]>>shg)&maskg;\
1044 int r= (((const type*)src)[i]>>shr)&maskr;\
1045 \
1046 dst[i]= (((RY)*r + (GY)*g + (BY)*b + (33<<((S)-1)))>>(S));\
1047 }\
1048 }
1049
1050 BGR2Y(uint32_t, bgr32ToY,16, 0, 0, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY , BY<< 8, RGB2YUV_SHIFT+8)
1051 BGR2Y(uint32_t, rgb32ToY, 0, 0,16, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY , BY<< 8, RGB2YUV_SHIFT+8)
1052 BGR2Y(uint16_t, bgr16ToY, 0, 0, 0, 0x001F, 0x07E0, 0xF800, RY<<11, GY<<5, BY , RGB2YUV_SHIFT+8)
1053 BGR2Y(uint16_t, bgr15ToY, 0, 0, 0, 0x001F, 0x03E0, 0x7C00, RY<<10, GY<<5, BY , RGB2YUV_SHIFT+7)
1054 BGR2Y(uint16_t, rgb16ToY, 0, 0, 0, 0xF800, 0x07E0, 0x001F, RY , GY<<5, BY<<11, RGB2YUV_SHIFT+8)
1055 BGR2Y(uint16_t, rgb15ToY, 0, 0, 0, 0x7C00, 0x03E0, 0x001F, RY , GY<<5, BY<<10, RGB2YUV_SHIFT+7)
1056
1057 static inline void abgrToA(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)
1058 {
1059 int i;
1060 for (i=0; i<width; i++) {
1061 dst[i]= src[4*i];
1062 }
1063 }
1064
1065 #define BGR2UV(type, name, shr, shg, shb, maska, maskr, maskg, maskb, RU, GU, BU, RV, GV, BV, S)\
1066 static inline void name(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\
1067 {\
1068 int i;\
1069 for (i=0; i<width; i++) {\
1070 int b= (((const type*)src)[i]&maskb)>>shb;\
1071 int g= (((const type*)src)[i]&maskg)>>shg;\
1072 int r= (((const type*)src)[i]&maskr)>>shr;\
1073 \
1074 dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<((S)-1)))>>(S);\
1075 dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<((S)-1)))>>(S);\
1076 }\
1077 }\
1078 static inline void name ## _half(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\
1079 {\
1080 int i;\
1081 for (i=0; i<width; i++) {\
1082 int pix0= ((const type*)src)[2*i+0];\
1083 int pix1= ((const type*)src)[2*i+1];\
1084 int g= (pix0&~(maskr|maskb))+(pix1&~(maskr|maskb));\
1085 int b= ((pix0+pix1-g)&(maskb|(2*maskb)))>>shb;\
1086 int r= ((pix0+pix1-g)&(maskr|(2*maskr)))>>shr;\
1087 g&= maskg|(2*maskg);\
1088 \
1089 g>>=shg;\
1090 \
1091 dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<(S)))>>((S)+1);\
1092 dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<(S)))>>((S)+1);\
1093 }\
1094 }
1095
1096 BGR2UV(uint32_t, bgr32ToUV,16, 0, 0, 0xFF000000, 0xFF0000, 0xFF00, 0x00FF, RU<< 8, GU , BU<< 8, RV<< 8, GV , BV<< 8, RGB2YUV_SHIFT+8)
1097 BGR2UV(uint32_t, rgb32ToUV, 0, 0,16, 0xFF000000, 0x00FF, 0xFF00, 0xFF0000, RU<< 8, GU , BU<< 8, RV<< 8, GV , BV<< 8, RGB2YUV_SHIFT+8)
1098 BGR2UV(uint16_t, bgr16ToUV, 0, 0, 0, 0, 0x001F, 0x07E0, 0xF800, RU<<11, GU<<5, BU , RV<<11, GV<<5, BV , RGB2YUV_SHIFT+8)
1099 BGR2UV(uint16_t, bgr15ToUV, 0, 0, 0, 0, 0x001F, 0x03E0, 0x7C00, RU<<10, GU<<5, BU , RV<<10, GV<<5, BV , RGB2YUV_SHIFT+7)
1100 BGR2UV(uint16_t, rgb16ToUV, 0, 0, 0, 0, 0xF800, 0x07E0, 0x001F, RU , GU<<5, BU<<11, RV , GV<<5, BV<<11, RGB2YUV_SHIFT+8)
1101 BGR2UV(uint16_t, rgb15ToUV, 0, 0, 0, 0, 0x7C00, 0x03E0, 0x001F, RU , GU<<5, BU<<10, RV , GV<<5, BV<<10, RGB2YUV_SHIFT+7)
1102
1103 static inline void palToY(uint8_t *dst, const uint8_t *src, long width, uint32_t *pal)
1104 {
1105 int i;
1106 for (i=0; i<width; i++) {
1107 int d= src[i];
1108
1109 dst[i]= pal[d] & 0xFF;
1110 }
1111 }
1112
1113 static inline void palToUV(uint8_t *dstU, uint8_t *dstV,
1114 const uint8_t *src1, const uint8_t *src2,
1115 long width, uint32_t *pal)
1116 {
1117 int i;
1118 assert(src1 == src2);
1119 for (i=0; i<width; i++) {
1120 int p= pal[src1[i]];
1121
1122 dstU[i]= p>>8;
1123 dstV[i]= p>>16;
1124 }
1125 }
1126
1127 static inline void monowhite2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)
1128 {
1129 int i, j;
1130 for (i=0; i<width/8; i++) {
1131 int d= ~src[i];
1132 for(j=0; j<8; j++)
1133 dst[8*i+j]= ((d>>(7-j))&1)*255;
1134 }
1135 }
1136
1137 static inline void monoblack2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)
1138 {
1139 int i, j;
1140 for (i=0; i<width/8; i++) {
1141 int d= src[i];
1142 for(j=0; j<8; j++)
1143 dst[8*i+j]= ((d>>(7-j))&1)*255;
1144 }
1145 }
1146
1147 //Note: we have C, MMX, MMX2, 3DNOW versions, there is no 3DNOW+MMX2 one
1148 //Plain C versions
1149 #if (!HAVE_MMX && !HAVE_ALTIVEC) || CONFIG_RUNTIME_CPUDETECT
1150 #define COMPILE_C
1151 #endif
1152
1153 #if ARCH_PPC
1154 #if HAVE_ALTIVEC
1155 #define COMPILE_ALTIVEC
1156 #endif
1157 #endif //ARCH_PPC
1158
1159 #if ARCH_X86
1160
1161 #if (HAVE_MMX && !HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT
1162 #define COMPILE_MMX
1163 #endif
1164
1165 #if HAVE_MMX2 || CONFIG_RUNTIME_CPUDETECT
1166 #define COMPILE_MMX2
1167 #endif
1168
1169 #if (HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT
1170 #define COMPILE_3DNOW
1171 #endif
1172 #endif //ARCH_X86
1173
1174 #define COMPILE_TEMPLATE_MMX 0
1175 #define COMPILE_TEMPLATE_MMX2 0
1176 #define COMPILE_TEMPLATE_AMD3DNOW 0
1177 #define COMPILE_TEMPLATE_ALTIVEC 0
1178
1179 #ifdef COMPILE_C
1180 #define RENAME(a) a ## _C
1181 #include "swscale_template.c"
1182 #endif
1183
1184 #ifdef COMPILE_ALTIVEC
1185 #undef RENAME
1186 #undef COMPILE_TEMPLATE_ALTIVEC
1187 #define COMPILE_TEMPLATE_ALTIVEC 1
1188 #define RENAME(a) a ## _altivec
1189 #include "swscale_template.c"
1190 #endif
1191
1192 #if ARCH_X86
1193
1194 //MMX versions
1195 #ifdef COMPILE_MMX
1196 #undef RENAME
1197 #undef COMPILE_TEMPLATE_MMX
1198 #undef COMPILE_TEMPLATE_MMX2
1199 #undef COMPILE_TEMPLATE_AMD3DNOW
1200 #define COMPILE_TEMPLATE_MMX 1
1201 #define COMPILE_TEMPLATE_MMX2 0
1202 #define COMPILE_TEMPLATE_AMD3DNOW 0
1203 #define RENAME(a) a ## _MMX
1204 #include "swscale_template.c"
1205 #endif
1206
1207 //MMX2 versions
1208 #ifdef COMPILE_MMX2
1209 #undef RENAME
1210 #undef COMPILE_TEMPLATE_MMX
1211 #undef COMPILE_TEMPLATE_MMX2
1212 #undef COMPILE_TEMPLATE_AMD3DNOW
1213 #define COMPILE_TEMPLATE_MMX 1
1214 #define COMPILE_TEMPLATE_MMX2 1
1215 #define COMPILE_TEMPLATE_AMD3DNOW 0
1216 #define RENAME(a) a ## _MMX2
1217 #include "swscale_template.c"
1218 #endif
1219
1220 //3DNOW versions
1221 #ifdef COMPILE_3DNOW
1222 #undef RENAME
1223 #undef COMPILE_TEMPLATE_MMX
1224 #undef COMPILE_TEMPLATE_MMX2
1225 #undef COMPILE_TEMPLATE_AMD3DNOW
1226 #define COMPILE_TEMPLATE_MMX 1
1227 #define COMPILE_TEMPLATE_MMX2 0
1228 #define COMPILE_TEMPLATE_AMD3DNOW 1
1229 #define RENAME(a) a ## _3DNow
1230 #include "swscale_template.c"
1231 #endif
1232
1233 #endif //ARCH_X86
1234
1235 SwsFunc ff_getSwsFunc(SwsContext *c)
1236 {
1237 #if CONFIG_RUNTIME_CPUDETECT
1238 int flags = c->flags;
1239
1240 #if ARCH_X86
1241 // ordered per speed fastest first
1242 if (flags & SWS_CPU_CAPS_MMX2) {
1243 sws_init_swScale_MMX2(c);
1244 return swScale_MMX2;
1245 } else if (flags & SWS_CPU_CAPS_3DNOW) {
1246 sws_init_swScale_3DNow(c);
1247 return swScale_3DNow;
1248 } else if (flags & SWS_CPU_CAPS_MMX) {
1249 sws_init_swScale_MMX(c);
1250 return swScale_MMX;
1251 } else {
1252 sws_init_swScale_C(c);
1253 return swScale_C;
1254 }
1255
1256 #else
1257 #ifdef COMPILE_ALTIVEC
1258 if (flags & SWS_CPU_CAPS_ALTIVEC) {
1259 sws_init_swScale_altivec(c);
1260 return swScale_altivec;
1261 } else {
1262 sws_init_swScale_C(c);
1263 return swScale_C;
1264 }
1265 #endif
1266 sws_init_swScale_C(c);
1267 return swScale_C;
1268 #endif /* ARCH_X86 */
1269 #else //CONFIG_RUNTIME_CPUDETECT
1270 #if COMPILE_TEMPLATE_MMX2
1271 sws_init_swScale_MMX2(c);
1272 return swScale_MMX2;
1273 #elif COMPILE_TEMPLATE_AMD3DNOW
1274 sws_init_swScale_3DNow(c);
1275 return swScale_3DNow;
1276 #elif COMPILE_TEMPLATE_MMX
1277 sws_init_swScale_MMX(c);
1278 return swScale_MMX;
1279 #elif COMPILE_TEMPLATE_ALTIVEC
1280 sws_init_swScale_altivec(c);
1281 return swScale_altivec;
1282 #else
1283 sws_init_swScale_C(c);
1284 return swScale_C;
1285 #endif
1286 #endif //!CONFIG_RUNTIME_CPUDETECT
1287 }
1288
1289 static int planarToNv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1290 int srcSliceH, uint8_t* dstParam[], int dstStride[])
1291 {
1292 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1293 /* Copy Y plane */
1294 if (dstStride[0]==srcStride[0] && srcStride[0] > 0)
1295 memcpy(dst, src[0], srcSliceH*dstStride[0]);
1296 else {
1297 int i;
1298 const uint8_t *srcPtr= src[0];
1299 uint8_t *dstPtr= dst;
1300 for (i=0; i<srcSliceH; i++) {
1301 memcpy(dstPtr, srcPtr, c->srcW);
1302 srcPtr+= srcStride[0];
1303 dstPtr+= dstStride[0];
1304 }
1305 }
1306 dst = dstParam[1] + dstStride[1]*srcSliceY/2;
1307 if (c->dstFormat == PIX_FMT_NV12)
1308 interleaveBytes(src[1], src[2], dst, c->srcW/2, srcSliceH/2, srcStride[1], srcStride[2], dstStride[0]);
1309 else
1310 interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]);
1311
1312 return srcSliceH;
1313 }
1314
1315 static int planarToYuy2Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1316 int srcSliceH, uint8_t* dstParam[], int dstStride[])
1317 {
1318 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1319
1320 yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);
1321
1322 return srcSliceH;
1323 }
1324
1325 static int planarToUyvyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1326 int srcSliceH, uint8_t* dstParam[], int dstStride[])
1327 {
1328 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1329
1330 yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);
1331
1332 return srcSliceH;
1333 }
1334
1335 static int yuv422pToYuy2Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1336 int srcSliceH, uint8_t* dstParam[], int dstStride[])
1337 {
1338 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1339
1340 yuv422ptoyuy2(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);
1341
1342 return srcSliceH;
1343 }
1344
1345 static int yuv422pToUyvyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1346 int srcSliceH, uint8_t* dstParam[], int dstStride[])
1347 {
1348 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1349
1350 yuv422ptouyvy(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);
1351
1352 return srcSliceH;
1353 }
1354
1355 static int yuyvToYuv420Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1356 int srcSliceH, uint8_t* dstParam[], int dstStride[])
1357 {
1358 uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;
1359 uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;
1360 uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;
1361
1362 yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);
1363
1364 if (dstParam[3])
1365 fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
1366
1367 return srcSliceH;
1368 }
1369
1370 static int yuyvToYuv422Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1371 int srcSliceH, uint8_t* dstParam[], int dstStride[])
1372 {
1373 uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;
1374 uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;
1375 uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;
1376
1377 yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);
1378
1379 return srcSliceH;
1380 }
1381
1382 static int uyvyToYuv420Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1383 int srcSliceH, uint8_t* dstParam[], int dstStride[])
1384 {
1385 uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;
1386 uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;
1387 uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;
1388
1389 uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);
1390
1391 if (dstParam[3])
1392 fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
1393
1394 return srcSliceH;
1395 }
1396
1397 static int uyvyToYuv422Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1398 int srcSliceH, uint8_t* dstParam[], int dstStride[])
1399 {
1400 uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;
1401 uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;
1402 uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;
1403
1404 uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);
1405
1406 return srcSliceH;
1407 }
1408
1409 static int palToRgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1410 int srcSliceH, uint8_t* dst[], int dstStride[])
1411 {
1412 const enum PixelFormat srcFormat= c->srcFormat;
1413 const enum PixelFormat dstFormat= c->dstFormat;
1414 void (*conv)(const uint8_t *src, uint8_t *dst, long num_pixels,
1415 const uint8_t *palette)=NULL;
1416 int i;
1417 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1418 const uint8_t *srcPtr= src[0];
1419
1420 if (usePal(srcFormat)) {
1421 switch (dstFormat) {
1422 case PIX_FMT_RGB32 : conv = sws_convertPalette8ToPacked32; break;
1423 case PIX_FMT_BGR32 : conv = sws_convertPalette8ToPacked32; break;
1424 case PIX_FMT_BGR32_1: conv = sws_convertPalette8ToPacked32; break;
1425 case PIX_FMT_RGB32_1: conv = sws_convertPalette8ToPacked32; break;
1426 case PIX_FMT_RGB24 : conv = sws_convertPalette8ToPacked24; break;
1427 case PIX_FMT_BGR24 : conv = sws_convertPalette8ToPacked24; break;
1428 }
1429 }
1430
1431 if (!conv)
1432 av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
1433 sws_format_name(srcFormat), sws_format_name(dstFormat));
1434 else {
1435 for (i=0; i<srcSliceH; i++) {
1436 conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);
1437 srcPtr+= srcStride[0];
1438 dstPtr+= dstStride[0];
1439 }
1440 }
1441
1442 return srcSliceH;
1443 }
1444
1445 #define isRGBA32(x) ( \
1446 (x) == PIX_FMT_ARGB \
1447 || (x) == PIX_FMT_RGBA \
1448 || (x) == PIX_FMT_BGRA \
1449 || (x) == PIX_FMT_ABGR \
1450 )
1451
1452 /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */
1453 static int rgbToRgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1454 int srcSliceH, uint8_t* dst[], int dstStride[])
1455 {
1456 const enum PixelFormat srcFormat= c->srcFormat;
1457 const enum PixelFormat dstFormat= c->dstFormat;
1458 const int srcBpp= (c->srcFormatBpp + 7) >> 3;
1459 const int dstBpp= (c->dstFormatBpp + 7) >> 3;
1460 const int srcId= c->srcFormatBpp >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */
1461 const int dstId= c->dstFormatBpp >> 2;
1462 void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;
1463
1464 #define CONV_IS(src, dst) (srcFormat == PIX_FMT_##src && dstFormat == PIX_FMT_##dst)
1465
1466 if (isRGBA32(srcFormat) && isRGBA32(dstFormat)) {
1467 if ( CONV_IS(ABGR, RGBA)
1468 || CONV_IS(ARGB, BGRA)
1469 || CONV_IS(BGRA, ARGB)
1470 || CONV_IS(RGBA, ABGR)) conv = shuffle_bytes_3210;
1471 else if (CONV_IS(ABGR, ARGB)
1472 || CONV_IS(ARGB, ABGR)) conv = shuffle_bytes_0321;
1473 else if (CONV_IS(ABGR, BGRA)
1474 || CONV_IS(ARGB, RGBA)) conv = shuffle_bytes_1230;
1475 else if (CONV_IS(BGRA, RGBA)
1476 || CONV_IS(RGBA, BGRA)) conv = shuffle_bytes_2103;
1477 else if (CONV_IS(BGRA, ABGR)
1478 || CONV_IS(RGBA, ARGB)) conv = shuffle_bytes_3012;
1479 } else
1480 /* BGR -> BGR */
1481 if ( (isBGRinInt(srcFormat) && isBGRinInt(dstFormat))
1482 || (isRGBinInt(srcFormat) && isRGBinInt(dstFormat))) {
1483 switch(srcId | (dstId<<4)) {
1484 case 0x34: conv= rgb16to15; break;
1485 case 0x36: conv= rgb24to15; break;
1486 case 0x38: conv= rgb32to15; break;
1487 case 0x43: conv= rgb15to16; break;
1488 case 0x46: conv= rgb24to16; break;
1489 case 0x48: conv= rgb32to16; break;
1490 case 0x63: conv= rgb15to24; break;
1491 case 0x64: conv= rgb16to24; break;
1492 case 0x68: conv= rgb32to24; break;
1493 case 0x83: conv= rgb15to32; break;
1494 case 0x84: conv= rgb16to32; break;
1495 case 0x86: conv= rgb24to32; break;
1496 }
1497 } else if ( (isBGRinInt(srcFormat) && isRGBinInt(dstFormat))
1498 || (isRGBinInt(srcFormat) && isBGRinInt(dstFormat))) {
1499 switch(srcId | (dstId<<4)) {
1500 case 0x33: conv= rgb15tobgr15; break;
1501 case 0x34: conv= rgb16tobgr15; break;
1502 case 0x36: conv= rgb24tobgr15; break;
1503 case 0x38: conv= rgb32tobgr15; break;
1504 case 0x43: conv= rgb15tobgr16; break;
1505 case 0x44: conv= rgb16tobgr16; break;
1506 case 0x46: conv= rgb24tobgr16; break;
1507 case 0x48: conv= rgb32tobgr16; break;
1508 case 0x63: conv= rgb15tobgr24; break;
1509 case 0x64: conv= rgb16tobgr24; break;
1510 case 0x66: conv= rgb24tobgr24; break;
1511 case 0x68: conv= rgb32tobgr24; break;
1512 case 0x83: conv= rgb15tobgr32; break;
1513 case 0x84: conv= rgb16tobgr32; break;
1514 case 0x86: conv= rgb24tobgr32; break;
1515 }
1516 }
1517
1518 if (!conv) {
1519 av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
1520 sws_format_name(srcFormat), sws_format_name(dstFormat));
1521 } else {
1522 const uint8_t *srcPtr= src[0];
1523 uint8_t *dstPtr= dst[0];
1524 if ((srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1) && !isRGBA32(dstFormat))
1525 srcPtr += ALT32_CORR;
1526
1527 if ((dstFormat == PIX_FMT_RGB32_1 || dstFormat == PIX_FMT_BGR32_1) && !isRGBA32(srcFormat))
1528 dstPtr += ALT32_CORR;
1529
1530 if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)
1531 conv(srcPtr, dstPtr + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);
1532 else {
1533 int i;
1534 dstPtr += dstStride[0]*srcSliceY;
1535
1536 for (i=0; i<srcSliceH; i++) {
1537 conv(srcPtr, dstPtr, c->srcW*srcBpp);
1538 srcPtr+= srcStride[0];
1539 dstPtr+= dstStride[0];
1540 }
1541 }
1542 }
1543 return srcSliceH;
1544 }
1545
1546 static int bgr24ToYv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1547 int srcSliceH, uint8_t* dst[], int dstStride[])
1548 {
1549 rgb24toyv12(
1550 src[0],
1551 dst[0]+ srcSliceY *dstStride[0],
1552 dst[1]+(srcSliceY>>1)*dstStride[1],
1553 dst[2]+(srcSliceY>>1)*dstStride[2],
1554 c->srcW, srcSliceH,
1555 dstStride[0], dstStride[1], srcStride[0]);
1556 if (dst[3])
1557 fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
1558 return srcSliceH;
1559 }
1560
1561 static int yvu9ToYv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1562 int srcSliceH, uint8_t* dst[], int dstStride[])
1563 {
1564 int i;
1565
1566 /* copy Y */
1567 if (srcStride[0]==dstStride[0] && srcStride[0] > 0)
1568 memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);
1569 else {
1570 const uint8_t *srcPtr= src[0];
1571 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1572
1573 for (i=0; i<srcSliceH; i++) {
1574 memcpy(dstPtr, srcPtr, c->srcW);
1575 srcPtr+= srcStride[0];
1576 dstPtr+= dstStride[0];
1577 }
1578 }
1579
1580 if (c->dstFormat==PIX_FMT_YUV420P || c->dstFormat==PIX_FMT_YUVA420P) {
1581 planar2x(src[1], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,
1582 srcSliceH >> 2, srcStride[1], dstStride[1]);
1583 planar2x(src[2], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,
1584 srcSliceH >> 2, srcStride[2], dstStride[2]);
1585 } else {
1586 planar2x(src[1], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,
1587 srcSliceH >> 2, srcStride[1], dstStride[2]);
1588 planar2x(src[2], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,
1589 srcSliceH >> 2, srcStride[2], dstStride[1]);
1590 }
1591 if (dst[3])
1592 fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
1593 return srcSliceH;
1594 }
1595
1596 /* unscaled copy like stuff (assumes nearly identical formats) */
1597 static int packedCopyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1598 int srcSliceH, uint8_t* dst[], int dstStride[])
1599 {
1600 if (dstStride[0]==srcStride[0] && srcStride[0] > 0)
1601 memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);
1602 else {
1603 int i;
1604 const uint8_t *srcPtr= src[0];
1605 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1606 int length=0;
1607
1608 /* universal length finder */
1609 while(length+c->srcW <= FFABS(dstStride[0])
1610 && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;
1611 assert(length!=0);
1612
1613 for (i=0; i<srcSliceH; i++) {
1614 memcpy(dstPtr, srcPtr, length);
1615 srcPtr+= srcStride[0];
1616 dstPtr+= dstStride[0];
1617 }
1618 }
1619 return srcSliceH;
1620 }
1621
1622 static int planarCopyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1623 int srcSliceH, uint8_t* dst[], int dstStride[])
1624 {
1625 int plane, i, j;
1626 for (plane=0; plane<4; plane++) {
1627 int length= (plane==0 || plane==3) ? c->srcW : -((-c->srcW )>>c->chrDstHSubSample);
1628 int y= (plane==0 || plane==3) ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);
1629 int height= (plane==0 || plane==3) ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);
1630 const uint8_t *srcPtr= src[plane];
1631 uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;
1632
1633 if (!dst[plane]) continue;
1634 // ignore palette for GRAY8
1635 if (plane == 1 && !dst[2]) continue;
1636 if (!src[plane] || (plane == 1 && !src[2])) {
1637 if(is16BPS(c->dstFormat))
1638 length*=2;
1639 fillPlane(dst[plane], dstStride[plane], length, height, y, (plane==3) ? 255 : 128);
1640 } else {
1641 if(is16BPS(c->srcFormat) && !is16BPS(c->dstFormat)) {
1642 if (!isBE(c->srcFormat)) srcPtr++;
1643 for (i=0; i<height; i++) {
1644 for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];
1645 srcPtr+= srcStride[plane];
1646 dstPtr+= dstStride[plane];
1647 }
1648 } else if(!is16BPS(c->srcFormat) && is16BPS(c->dstFormat)) {
1649 for (i=0; i<height; i++) {
1650 for (j=0; j<length; j++) {
1651 dstPtr[ j<<1 ] = srcPtr[j];
1652 dstPtr[(j<<1)+1] = srcPtr[j];
1653 }
1654 srcPtr+= srcStride[plane];
1655 dstPtr+= dstStride[plane];
1656 }
1657 } else if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat)
1658 && isBE(c->srcFormat) != isBE(c->dstFormat)) {
1659
1660 for (i=0; i<height; i++) {
1661 for (j=0; j<length; j++)
1662 ((uint16_t*)dstPtr)[j] = av_bswap16(((const uint16_t*)srcPtr)[j]);
1663 srcPtr+= srcStride[plane];
1664 dstPtr+= dstStride[plane];
1665 }
1666 } else if (dstStride[plane] == srcStride[plane] &&
1667 srcStride[plane] > 0 && srcStride[plane] == length) {
1668 memcpy(dst[plane] + dstStride[plane]*y, src[plane],
1669 height*dstStride[plane]);
1670 } else {
1671 if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat))
1672 length*=2;
1673 for (i=0; i<height; i++) {
1674 memcpy(dstPtr, srcPtr, length);
1675 srcPtr+= srcStride[plane];
1676 dstPtr+= dstStride[plane];
1677 }
1678 }
1679 }
1680 }
1681 return srcSliceH;
1682 }
1683
1684 int ff_hardcodedcpuflags(void)
1685 {
1686 int flags = 0;
1687 #if COMPILE_TEMPLATE_MMX2
1688 flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;
1689 #elif COMPILE_TEMPLATE_AMD3DNOW
1690 flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;
1691 #elif COMPILE_TEMPLATE_MMX
1692 flags |= SWS_CPU_CAPS_MMX;
1693 #elif COMPILE_TEMPLATE_ALTIVEC
1694 flags |= SWS_CPU_CAPS_ALTIVEC;
1695 #elif ARCH_BFIN
1696 flags |= SWS_CPU_CAPS_BFIN;
1697 #endif
1698 return flags;
1699 }
1700
1701 void ff_get_unscaled_swscale(SwsContext *c)
1702 {
1703 const enum PixelFormat srcFormat = c->srcFormat;
1704 const enum PixelFormat dstFormat = c->dstFormat;
1705 const int flags = c->flags;
1706 const int dstH = c->dstH;
1707 int needsDither;
1708
1709 needsDither= isAnyRGB(dstFormat)
1710 && c->dstFormatBpp < 24
1711 && (c->dstFormatBpp < c->srcFormatBpp || (!isAnyRGB(srcFormat)));
1712
1713 /* yv12_to_nv12 */
1714 if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21)) {
1715 c->swScale= planarToNv12Wrapper;
1716 }
1717 /* yuv2bgr */
1718 if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P || srcFormat==PIX_FMT_YUVA420P) && isAnyRGB(dstFormat)
1719 && !(flags & SWS_ACCURATE_RND) && !(dstH&1)) {
1720 c->swScale= ff_yuv2rgb_get_func_ptr(c);
1721 }
1722
1723 if (srcFormat==PIX_FMT_YUV410P && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_BITEXACT)) {
1724 c->swScale= yvu9ToYv12Wrapper;
1725 }
1726
1727 /* bgr24toYV12 */
1728 if (srcFormat==PIX_FMT_BGR24 && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_ACCURATE_RND))
1729 c->swScale= bgr24ToYv12Wrapper;
1730
1731 /* RGB/BGR -> RGB/BGR (no dither needed forms) */
1732 if ( isAnyRGB(srcFormat)
1733 && isAnyRGB(dstFormat)
1734 && srcFormat != PIX_FMT_BGR8 && dstFormat != PIX_FMT_BGR8
1735 && srcFormat != PIX_FMT_RGB8 && dstFormat != PIX_FMT_RGB8
1736 && srcFormat != PIX_FMT_BGR4 && dstFormat != PIX_FMT_BGR4
1737 && srcFormat != PIX_FMT_RGB4 && dstFormat != PIX_FMT_RGB4
1738 && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE
1739 && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE
1740 && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK
1741 && srcFormat != PIX_FMT_MONOWHITE && dstFormat != PIX_FMT_MONOWHITE
1742 && srcFormat != PIX_FMT_RGB48LE && dstFormat != PIX_FMT_RGB48LE
1743 && srcFormat != PIX_FMT_RGB48BE && dstFormat != PIX_FMT_RGB48BE
1744 && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))
1745 c->swScale= rgbToRgbWrapper;
1746
1747 if ((usePal(srcFormat) && (
1748 dstFormat == PIX_FMT_RGB32 ||
1749 dstFormat == PIX_FMT_RGB32_1 ||
1750 dstFormat == PIX_FMT_RGB24 ||
1751 dstFormat == PIX_FMT_BGR32 ||
1752 dstFormat == PIX_FMT_BGR32_1 ||
1753 dstFormat == PIX_FMT_BGR24)))
1754 c->swScale= palToRgbWrapper;
1755
1756 if (srcFormat == PIX_FMT_YUV422P) {
1757 if (dstFormat == PIX_FMT_YUYV422)
1758 c->swScale= yuv422pToYuy2Wrapper;
1759 else if (dstFormat == PIX_FMT_UYVY422)
1760 c->swScale= yuv422pToUyvyWrapper;
1761 }
1762
1763 /* LQ converters if -sws 0 or -sws 4*/
1764 if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)) {
1765 /* yv12_to_yuy2 */
1766 if (srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) {
1767 if (dstFormat == PIX_FMT_YUYV422)
1768 c->swScale= planarToYuy2Wrapper;
1769 else if (dstFormat == PIX_FMT_UYVY422)
1770 c->swScale= planarToUyvyWrapper;
1771 }
1772 }
1773 if(srcFormat == PIX_FMT_YUYV422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))
1774 c->swScale= yuyvToYuv420Wrapper;
1775 if(srcFormat == PIX_FMT_UYVY422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))
1776 c->swScale= uyvyToYuv420Wrapper;
1777 if(srcFormat == PIX_FMT_YUYV422 && dstFormat == PIX_FMT_YUV422P)
1778 c->swScale= yuyvToYuv422Wrapper;
1779 if(srcFormat == PIX_FMT_UYVY422 && dstFormat == PIX_FMT_YUV422P)
1780 c->swScale= uyvyToYuv422Wrapper;
1781
1782 #ifdef COMPILE_ALTIVEC
1783 if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&
1784 !(c->flags & SWS_BITEXACT) &&
1785 srcFormat == PIX_FMT_YUV420P) {
1786 // unscaled YV12 -> packed YUV, we want speed
1787 if (dstFormat == PIX_FMT_YUYV422)
1788 c->swScale= yv12toyuy2_unscaled_altivec;
1789 else if (dstFormat == PIX_FMT_UYVY422)
1790 c->swScale= yv12touyvy_unscaled_altivec;
1791 }
1792 #endif
1793
1794 /* simple copy */
1795 if ( srcFormat == dstFormat
1796 || (srcFormat == PIX_FMT_YUVA420P && dstFormat == PIX_FMT_YUV420P)
1797 || (srcFormat == PIX_FMT_YUV420P && dstFormat == PIX_FMT_YUVA420P)
1798 || (isPlanarYUV(srcFormat) && isGray(dstFormat))
1799 || (isPlanarYUV(dstFormat) && isGray(srcFormat))
1800 || (isGray(dstFormat) && isGray(srcFormat))
1801 || (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat)
1802 && c->chrDstHSubSample == c->chrSrcHSubSample
1803 && c->chrDstVSubSample == c->chrSrcVSubSample
1804 && dstFormat != PIX_FMT_NV12 && dstFormat != PIX_FMT_NV21
1805 && srcFormat != PIX_FMT_NV12 && srcFormat != PIX_FMT_NV21))
1806 {
1807 if (isPacked(c->srcFormat))
1808 c->swScale= packedCopyWrapper;
1809 else /* Planar YUV or gray */
1810 c->swScale= planarCopyWrapper;
1811 }
1812 #if ARCH_BFIN
1813 if (flags & SWS_CPU_CAPS_BFIN)
1814 ff_bfin_get_unscaled_swscale (c);
1815 #endif
1816 }
1817
1818 static void reset_ptr(const uint8_t* src[], int format)
1819 {
1820 if(!isALPHA(format))
1821 src[3]=NULL;
1822 if(!isPlanarYUV(format)) {
1823 src[3]=src[2]=NULL;
1824
1825 if (!usePal(format))
1826 src[1]= NULL;
1827 }
1828 }
1829
1830 /**
1831 * swscale wrapper, so we don't need to export the SwsContext.
1832 * Assumes planar YUV to be in YUV order instead of YVU.
1833 */
1834 int sws_scale(SwsContext *c, const uint8_t* const src[], const int srcStride[], int srcSliceY,
1835 int srcSliceH, uint8_t* const dst[], const int dstStride[])
1836 {
1837 int i;
1838 const uint8_t* src2[4]= {src[0], src[1], src[2], src[3]};
1839 uint8_t* dst2[4]= {dst[0], dst[1], dst[2], dst[3]};
1840
1841 // do not mess up sliceDir if we have a "trailing" 0-size slice
1842 if (srcSliceH == 0)
1843 return 0;
1844
1845 if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
1846 av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");
1847 return 0;
1848 }
1849 if (c->sliceDir == 0) {
1850 if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;
1851 }
1852
1853 if (usePal(c->srcFormat)) {
1854 for (i=0; i<256; i++) {
1855 int p, r, g, b,y,u,v;
1856 if(c->srcFormat == PIX_FMT_PAL8) {
1857 p=((const uint32_t*)(src[1]))[i];
1858 r= (p>>16)&0xFF;
1859 g= (p>> 8)&0xFF;
1860 b= p &0xFF;
1861 } else if(c->srcFormat == PIX_FMT_RGB8) {
1862 r= (i>>5 )*36;
1863 g= ((i>>2)&7)*36;
1864 b= (i&3 )*85;
1865 } else if(c->srcFormat == PIX_FMT_BGR8) {
1866 b= (i>>6 )*85;
1867 g= ((i>>3)&7)*36;
1868 r= (i&7 )*36;
1869 } else if(c->srcFormat == PIX_FMT_RGB4_BYTE) {
1870 r= (i>>3 )*255;
1871 g= ((i>>1)&3)*85;
1872 b= (i&1 )*255;
1873 } else if(c->srcFormat == PIX_FMT_GRAY8) {
1874 r = g = b = i;
1875 } else {
1876 assert(c->srcFormat == PIX_FMT_BGR4_BYTE);
1877 b= (i>>3 )*255;
1878 g= ((i>>1)&3)*85;
1879 r= (i&1 )*255;
1880 }
1881 y= av_clip_uint8((RY*r + GY*g + BY*b + ( 33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
1882 u= av_clip_uint8((RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
1883 v= av_clip_uint8((RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
1884 c->pal_yuv[i]= y + (u<<8) + (v<<16);
1885
1886 switch(c->dstFormat) {
1887 case PIX_FMT_BGR32:
1888 #if !HAVE_BIGENDIAN
1889 case PIX_FMT_RGB24:
1890 #endif
1891 c->pal_rgb[i]= r + (g<<8) + (b<<16);
1892 break;
1893 case PIX_FMT_BGR32_1:
1894 #if HAVE_BIGENDIAN
1895 case PIX_FMT_BGR24:
1896 #endif
1897 c->pal_rgb[i]= (r + (g<<8) + (b<<16)) << 8;
1898 break;
1899 case PIX_FMT_RGB32_1:
1900 #if HAVE_BIGENDIAN
1901 case PIX_FMT_RGB24:
1902 #endif
1903 c->pal_rgb[i]= (b + (g<<8) + (r<<16)) << 8;
1904 break;
1905 case PIX_FMT_RGB32:
1906 #if !HAVE_BIGENDIAN
1907 case PIX_FMT_BGR24:
1908 #endif
1909 default:
1910 c->pal_rgb[i]= b + (g<<8) + (r<<16);
1911 }
1912 }
1913 }
1914
1915 // copy strides, so they can safely be modified
1916 if (c->sliceDir == 1) {
1917 // slices go from top to bottom
1918 int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2], srcStride[3]};
1919 int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2], dstStride[3]};
1920
1921 reset_ptr(src2, c->srcFormat);
1922 reset_ptr((const uint8_t**)dst2, c->dstFormat);
1923
1924 /* reset slice direction at end of frame */
1925 if (srcSliceY + srcSliceH == c->srcH)
1926 c->sliceDir = 0;
1927
1928 return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2, dstStride2);
1929 } else {
1930 // slices go from bottom to top => we flip the image internally
1931 int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2], -srcStride[3]};
1932 int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2], -dstStride[3]};
1933
1934 src2[0] += (srcSliceH-1)*srcStride[0];
1935 if (!usePal(c->srcFormat))
1936 src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];
1937 src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];
1938 src2[3] += (srcSliceH-1)*srcStride[3];
1939 dst2[0] += ( c->dstH -1)*dstStride[0];
1940 dst2[1] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1];
1941 dst2[2] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2];
1942 dst2[3] += ( c->dstH -1)*dstStride[3];
1943
1944 reset_ptr(src2, c->srcFormat);
1945 reset_ptr((const uint8_t**)dst2, c->dstFormat);
1946
1947 /* reset slice direction at end of frame */
1948 if (!srcSliceY)
1949 c->sliceDir = 0;
1950
1951 return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);
1952 }
1953 }
1954
1955 #if LIBSWSCALE_VERSION_MAJOR < 1
1956 int sws_scale_ordered(SwsContext *c, const uint8_t* const src[], int srcStride[], int srcSliceY,
1957 int srcSliceH, uint8_t* dst[], int dstStride[])
1958 {
1959 return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);
1960 }
1961 #endif
1962
1963 /* Convert the palette to the same packed 32-bit format as the palette */
1964 void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
1965 {
1966 long i;
1967
1968 for (i=0; i<num_pixels; i++)
1969 ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i]];
1970 }
1971
1972 /* Palette format: ABCD -> dst format: ABC */
1973 void sws_convertPalette8ToPacked24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
1974 {
1975 long i;
1976
1977 for (i=0; i<num_pixels; i++) {
1978 //FIXME slow?
1979 dst[0]= palette[src[i]*4+0];
1980 dst[1]= palette[src[i]*4+1];
1981 dst[2]= palette[src[i]*4+2];
1982 dst+= 3;
1983 }
1984 }