2 * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (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
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 * the C code (not assembly, mmx, ...) of this file can be used
21 * under the LGPL license too
25 supported Input formats: YV12, I420/IYUV, YUY2, UYVY, BGR32, BGR32_1, BGR24, BGR16, BGR15, RGB32, RGB32_1, RGB24, Y8/Y800, YVU9/IF09, PAL8
26 supported output formats: YV12, I420/IYUV, YUY2, UYVY, {BGR,RGB}{1,4,8,15,16,24,32}, Y8/Y800, YVU9/IF09
27 {BGR,RGB}{1,4,8,15,16} support dithering
29 unscaled special converters (YV12=I420=IYUV, Y800=Y8)
30 YV12 -> {BGR,RGB}{1,4,8,15,16,24,32}
35 BGR24 -> BGR32 & RGB24 -> RGB32
36 BGR32 -> BGR24 & RGB32 -> RGB24
41 tested special converters (most are tested actually, but I did not write it down ...)
48 untested special converters
49 YV12/I420 -> BGR15/BGR24/BGR32 (it is the yuv2rgb stuff, so it should be ok)
50 YV12/I420 -> YV12/I420
51 YUY2/BGR15/BGR24/BGR32/RGB24/RGB32 -> same format
52 BGR24 -> BGR32 & RGB24 -> RGB32
53 BGR32 -> BGR24 & RGB32 -> RGB24
57 #define _SVID_SOURCE //needed for MAP_ANONYMOUS
65 #ifdef HAVE_SYS_MMAN_H
67 #if defined(MAP_ANON) && !defined(MAP_ANONYMOUS)
68 #define MAP_ANONYMOUS MAP_ANON
72 #include "swscale_internal.h"
74 #include "libavutil/x86_cpu.h"
75 #include "libavutil/bswap.h"
77 unsigned swscale_version(void)
79 return LIBSWSCALE_VERSION_INT
;
89 //#define WORDS_BIGENDIAN
92 #define FAST_BGR2YV12 // use 7 bit coeffs instead of 15bit
94 #define RET 0xC3 //near return opcode for X86
99 #define PI 3.14159265358979323846
102 #define isSupportedIn(x) ( \
103 (x)==PIX_FMT_YUV420P \
104 || (x)==PIX_FMT_YUVA420P \
105 || (x)==PIX_FMT_YUYV422 \
106 || (x)==PIX_FMT_UYVY422 \
107 || (x)==PIX_FMT_RGB32 \
108 || (x)==PIX_FMT_RGB32_1 \
109 || (x)==PIX_FMT_BGR24 \
110 || (x)==PIX_FMT_BGR565 \
111 || (x)==PIX_FMT_BGR555 \
112 || (x)==PIX_FMT_BGR32 \
113 || (x)==PIX_FMT_BGR32_1 \
114 || (x)==PIX_FMT_RGB24 \
115 || (x)==PIX_FMT_RGB565 \
116 || (x)==PIX_FMT_RGB555 \
117 || (x)==PIX_FMT_GRAY8 \
118 || (x)==PIX_FMT_YUV410P \
119 || (x)==PIX_FMT_YUV440P \
120 || (x)==PIX_FMT_GRAY16BE \
121 || (x)==PIX_FMT_GRAY16LE \
122 || (x)==PIX_FMT_YUV444P \
123 || (x)==PIX_FMT_YUV422P \
124 || (x)==PIX_FMT_YUV411P \
125 || (x)==PIX_FMT_PAL8 \
126 || (x)==PIX_FMT_BGR8 \
127 || (x)==PIX_FMT_RGB8 \
128 || (x)==PIX_FMT_BGR4_BYTE \
129 || (x)==PIX_FMT_RGB4_BYTE \
130 || (x)==PIX_FMT_YUV440P \
131 || (x)==PIX_FMT_MONOWHITE \
132 || (x)==PIX_FMT_MONOBLACK \
134 #define isSupportedOut(x) ( \
135 (x)==PIX_FMT_YUV420P \
136 || (x)==PIX_FMT_YUYV422 \
137 || (x)==PIX_FMT_UYVY422 \
138 || (x)==PIX_FMT_YUV444P \
139 || (x)==PIX_FMT_YUV422P \
140 || (x)==PIX_FMT_YUV411P \
143 || (x)==PIX_FMT_NV12 \
144 || (x)==PIX_FMT_NV21 \
145 || (x)==PIX_FMT_GRAY16BE \
146 || (x)==PIX_FMT_GRAY16LE \
147 || (x)==PIX_FMT_GRAY8 \
148 || (x)==PIX_FMT_YUV410P \
149 || (x)==PIX_FMT_YUV440P \
151 #define isPacked(x) ( \
153 || (x)==PIX_FMT_YUYV422 \
154 || (x)==PIX_FMT_UYVY422 \
158 #define usePal(x) ( \
160 || (x)==PIX_FMT_BGR4_BYTE \
161 || (x)==PIX_FMT_RGB4_BYTE \
162 || (x)==PIX_FMT_BGR8 \
163 || (x)==PIX_FMT_RGB8 \
166 #define RGB2YUV_SHIFT 15
167 #define BY ( (int)(0.114*219/255*(1<<RGB2YUV_SHIFT)+0.5))
168 #define BV (-(int)(0.081*224/255*(1<<RGB2YUV_SHIFT)+0.5))
169 #define BU ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5))
170 #define GY ( (int)(0.587*219/255*(1<<RGB2YUV_SHIFT)+0.5))
171 #define GV (-(int)(0.419*224/255*(1<<RGB2YUV_SHIFT)+0.5))
172 #define GU (-(int)(0.331*224/255*(1<<RGB2YUV_SHIFT)+0.5))
173 #define RY ( (int)(0.299*219/255*(1<<RGB2YUV_SHIFT)+0.5))
174 #define RV ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5))
175 #define RU (-(int)(0.169*224/255*(1<<RGB2YUV_SHIFT)+0.5))
177 extern const int32_t Inverse_Table_6_9
[8][4];
179 static const double rgb2yuv_table
[8][9]={
180 {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5},
181 {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5},
182 {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},
183 {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},
184 {0.59 , 0.11 , 0.30 , -0.331, 0.5, -0.169, -0.421, -0.079, 0.5}, //FCC
185 {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},
186 {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //SMPTE 170M
187 {0.701 , 0.087 , 0.212 , -0.384, 0.5 -0.116, -0.445, -0.055, 0.5}, //SMPTE 240M
192 Special versions: fast Y 1:1 scaling (no interpolation in y direction)
195 more intelligent misalignment avoidance for the horizontal scaler
196 write special vertical cubic upscale version
197 Optimize C code (yv12 / minmax)
198 add support for packed pixel yuv input & output
199 add support for Y8 output
200 optimize bgr24 & bgr32
201 add BGR4 output support
202 write special BGR->BGR scaler
205 #if defined(ARCH_X86) && defined (CONFIG_GPL)
206 DECLARE_ASM_CONST(8, uint64_t, bF8
)= 0xF8F8F8F8F8F8F8F8LL
;
207 DECLARE_ASM_CONST(8, uint64_t, bFC
)= 0xFCFCFCFCFCFCFCFCLL
;
208 DECLARE_ASM_CONST(8, uint64_t, w10
)= 0x0010001000100010LL
;
209 DECLARE_ASM_CONST(8, uint64_t, w02
)= 0x0002000200020002LL
;
210 DECLARE_ASM_CONST(8, uint64_t, bm00001111
)=0x00000000FFFFFFFFLL
;
211 DECLARE_ASM_CONST(8, uint64_t, bm00000111
)=0x0000000000FFFFFFLL
;
212 DECLARE_ASM_CONST(8, uint64_t, bm11111000
)=0xFFFFFFFFFF000000LL
;
213 DECLARE_ASM_CONST(8, uint64_t, bm01010101
)=0x00FF00FF00FF00FFLL
;
215 const DECLARE_ALIGNED(8, uint64_t, ff_dither4
[2]) = {
216 0x0103010301030103LL
,
217 0x0200020002000200LL
,};
219 const DECLARE_ALIGNED(8, uint64_t, ff_dither8
[2]) = {
220 0x0602060206020602LL
,
221 0x0004000400040004LL
,};
223 DECLARE_ASM_CONST(8, uint64_t, b16Mask
)= 0x001F001F001F001FLL
;
224 DECLARE_ASM_CONST(8, uint64_t, g16Mask
)= 0x07E007E007E007E0LL
;
225 DECLARE_ASM_CONST(8, uint64_t, r16Mask
)= 0xF800F800F800F800LL
;
226 DECLARE_ASM_CONST(8, uint64_t, b15Mask
)= 0x001F001F001F001FLL
;
227 DECLARE_ASM_CONST(8, uint64_t, g15Mask
)= 0x03E003E003E003E0LL
;
228 DECLARE_ASM_CONST(8, uint64_t, r15Mask
)= 0x7C007C007C007C00LL
;
230 DECLARE_ALIGNED(8, const uint64_t, ff_M24A
) = 0x00FF0000FF0000FFLL
;
231 DECLARE_ALIGNED(8, const uint64_t, ff_M24B
) = 0xFF0000FF0000FF00LL
;
232 DECLARE_ALIGNED(8, const uint64_t, ff_M24C
) = 0x0000FF0000FF0000LL
;
235 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YCoeff
) = 0x000000210041000DULL
;
236 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UCoeff
) = 0x0000FFEEFFDC0038ULL
;
237 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2VCoeff
) = 0x00000038FFD2FFF8ULL
;
239 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YCoeff
) = 0x000020E540830C8BULL
;
240 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UCoeff
) = 0x0000ED0FDAC23831ULL
;
241 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2VCoeff
) = 0x00003831D0E6F6EAULL
;
242 #endif /* FAST_BGR2YV12 */
243 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YOffset
) = 0x1010101010101010ULL
;
244 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UVOffset
) = 0x8080808080808080ULL
;
245 DECLARE_ALIGNED(8, const uint64_t, ff_w1111
) = 0x0001000100010001ULL
;
247 DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toY1Coeff
) = 0x0C88000040870C88ULL
;
248 DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toY2Coeff
) = 0x20DE4087000020DEULL
;
249 DECLARE_ASM_CONST(8, uint64_t, ff_rgb24toY1Coeff
) = 0x20DE0000408720DEULL
;
250 DECLARE_ASM_CONST(8, uint64_t, ff_rgb24toY2Coeff
) = 0x0C88408700000C88ULL
;
251 DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toYOffset
) = 0x0008400000084000ULL
;
253 DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toUV
[2][4]) = {
254 {0x38380000DAC83838ULL
, 0xECFFDAC80000ECFFULL
, 0xF6E40000D0E3F6E4ULL
, 0x3838D0E300003838ULL
},
255 {0xECFF0000DAC8ECFFULL
, 0x3838DAC800003838ULL
, 0x38380000D0E33838ULL
, 0xF6E4D0E30000F6E4ULL
},
258 DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toUVOffset
)= 0x0040400000404000ULL
;
260 #endif /* defined(ARCH_X86) */
262 // clipping helper table for C implementations:
263 static unsigned char clip_table
[768];
265 static SwsVector
*sws_getConvVec(SwsVector
*a
, SwsVector
*b
);
267 static const uint8_t __attribute__((aligned(8))) dither_2x2_4
[2][8]={
268 { 1, 3, 1, 3, 1, 3, 1, 3, },
269 { 2, 0, 2, 0, 2, 0, 2, 0, },
272 static const uint8_t __attribute__((aligned(8))) dither_2x2_8
[2][8]={
273 { 6, 2, 6, 2, 6, 2, 6, 2, },
274 { 0, 4, 0, 4, 0, 4, 0, 4, },
277 const uint8_t __attribute__((aligned(8))) dither_8x8_32
[8][8]={
278 { 17, 9, 23, 15, 16, 8, 22, 14, },
279 { 5, 29, 3, 27, 4, 28, 2, 26, },
280 { 21, 13, 19, 11, 20, 12, 18, 10, },
281 { 0, 24, 6, 30, 1, 25, 7, 31, },
282 { 16, 8, 22, 14, 17, 9, 23, 15, },
283 { 4, 28, 2, 26, 5, 29, 3, 27, },
284 { 20, 12, 18, 10, 21, 13, 19, 11, },
285 { 1, 25, 7, 31, 0, 24, 6, 30, },
289 const uint8_t __attribute__((aligned(8))) dither_8x8_64
[8][8]={
290 { 0, 48, 12, 60, 3, 51, 15, 63, },
291 { 32, 16, 44, 28, 35, 19, 47, 31, },
292 { 8, 56, 4, 52, 11, 59, 7, 55, },
293 { 40, 24, 36, 20, 43, 27, 39, 23, },
294 { 2, 50, 14, 62, 1, 49, 13, 61, },
295 { 34, 18, 46, 30, 33, 17, 45, 29, },
296 { 10, 58, 6, 54, 9, 57, 5, 53, },
297 { 42, 26, 38, 22, 41, 25, 37, 21, },
301 const uint8_t __attribute__((aligned(8))) dither_8x8_73
[8][8]={
302 { 0, 55, 14, 68, 3, 58, 17, 72, },
303 { 37, 18, 50, 32, 40, 22, 54, 35, },
304 { 9, 64, 5, 59, 13, 67, 8, 63, },
305 { 46, 27, 41, 23, 49, 31, 44, 26, },
306 { 2, 57, 16, 71, 1, 56, 15, 70, },
307 { 39, 21, 52, 34, 38, 19, 51, 33, },
308 { 11, 66, 7, 62, 10, 65, 6, 60, },
309 { 48, 30, 43, 25, 47, 29, 42, 24, },
313 const uint8_t __attribute__((aligned(8))) dither_8x8_128
[8][8]={
314 { 68, 36, 92, 60, 66, 34, 90, 58, },
315 { 20, 116, 12, 108, 18, 114, 10, 106, },
316 { 84, 52, 76, 44, 82, 50, 74, 42, },
317 { 0, 96, 24, 120, 6, 102, 30, 126, },
318 { 64, 32, 88, 56, 70, 38, 94, 62, },
319 { 16, 112, 8, 104, 22, 118, 14, 110, },
320 { 80, 48, 72, 40, 86, 54, 78, 46, },
321 { 4, 100, 28, 124, 2, 98, 26, 122, },
326 const uint8_t __attribute__((aligned(8))) dither_8x8_220
[8][8]={
327 {117, 62, 158, 103, 113, 58, 155, 100, },
328 { 34, 199, 21, 186, 31, 196, 17, 182, },
329 {144, 89, 131, 76, 141, 86, 127, 72, },
330 { 0, 165, 41, 206, 10, 175, 52, 217, },
331 {110, 55, 151, 96, 120, 65, 162, 107, },
332 { 28, 193, 14, 179, 38, 203, 24, 189, },
333 {138, 83, 124, 69, 148, 93, 134, 79, },
334 { 7, 172, 48, 213, 3, 168, 45, 210, },
337 // tries to correct a gamma of 1.5
338 const uint8_t __attribute__((aligned(8))) dither_8x8_220
[8][8]={
339 { 0, 143, 18, 200, 2, 156, 25, 215, },
340 { 78, 28, 125, 64, 89, 36, 138, 74, },
341 { 10, 180, 3, 161, 16, 195, 8, 175, },
342 {109, 51, 93, 38, 121, 60, 105, 47, },
343 { 1, 152, 23, 210, 0, 147, 20, 205, },
344 { 85, 33, 134, 71, 81, 30, 130, 67, },
345 { 14, 190, 6, 171, 12, 185, 5, 166, },
346 {117, 57, 101, 44, 113, 54, 97, 41, },
349 // tries to correct a gamma of 2.0
350 const uint8_t __attribute__((aligned(8))) dither_8x8_220
[8][8]={
351 { 0, 124, 8, 193, 0, 140, 12, 213, },
352 { 55, 14, 104, 42, 66, 19, 119, 52, },
353 { 3, 168, 1, 145, 6, 187, 3, 162, },
354 { 86, 31, 70, 21, 99, 39, 82, 28, },
355 { 0, 134, 11, 206, 0, 129, 9, 200, },
356 { 62, 17, 114, 48, 58, 16, 109, 45, },
357 { 5, 181, 2, 157, 4, 175, 1, 151, },
358 { 95, 36, 78, 26, 90, 34, 74, 24, },
361 // tries to correct a gamma of 2.5
362 const uint8_t __attribute__((aligned(8))) dither_8x8_220
[8][8]={
363 { 0, 107, 3, 187, 0, 125, 6, 212, },
364 { 39, 7, 86, 28, 49, 11, 102, 36, },
365 { 1, 158, 0, 131, 3, 180, 1, 151, },
366 { 68, 19, 52, 12, 81, 25, 64, 17, },
367 { 0, 119, 5, 203, 0, 113, 4, 195, },
368 { 45, 9, 96, 33, 42, 8, 91, 30, },
369 { 2, 172, 1, 144, 2, 165, 0, 137, },
370 { 77, 23, 60, 15, 72, 21, 56, 14, },
374 const char *sws_format_name(enum PixelFormat format
)
377 case PIX_FMT_YUV420P
:
379 case PIX_FMT_YUVA420P
:
381 case PIX_FMT_YUYV422
:
387 case PIX_FMT_YUV422P
:
389 case PIX_FMT_YUV444P
:
393 case PIX_FMT_YUV410P
:
395 case PIX_FMT_YUV411P
:
401 case PIX_FMT_GRAY16BE
:
403 case PIX_FMT_GRAY16LE
:
407 case PIX_FMT_MONOWHITE
:
409 case PIX_FMT_MONOBLACK
:
413 case PIX_FMT_YUVJ420P
:
415 case PIX_FMT_YUVJ422P
:
417 case PIX_FMT_YUVJ444P
:
419 case PIX_FMT_XVMC_MPEG2_MC
:
420 return "xvmc_mpeg2_mc";
421 case PIX_FMT_XVMC_MPEG2_IDCT
:
422 return "xvmc_mpeg2_idct";
423 case PIX_FMT_UYVY422
:
425 case PIX_FMT_UYYVYY411
:
427 case PIX_FMT_RGB32_1
:
429 case PIX_FMT_BGR32_1
:
441 case PIX_FMT_BGR4_BYTE
:
447 case PIX_FMT_RGB4_BYTE
:
453 case PIX_FMT_YUV440P
:
456 return "Unknown format";
460 static inline void yuv2yuvXinC(int16_t *lumFilter
, int16_t **lumSrc
, int lumFilterSize
,
461 int16_t *chrFilter
, int16_t **chrSrc
, int chrFilterSize
,
462 uint8_t *dest
, uint8_t *uDest
, uint8_t *vDest
, int dstW
, int chrDstW
)
464 //FIXME Optimize (just quickly writen not opti..)
466 for (i
=0; i
<dstW
; i
++)
470 for (j
=0; j
<lumFilterSize
; j
++)
471 val
+= lumSrc
[j
][i
] * lumFilter
[j
];
473 dest
[i
]= av_clip_uint8(val
>>19);
477 for (i
=0; i
<chrDstW
; i
++)
482 for (j
=0; j
<chrFilterSize
; j
++)
484 u
+= chrSrc
[j
][i
] * chrFilter
[j
];
485 v
+= chrSrc
[j
][i
+ VOFW
] * chrFilter
[j
];
488 uDest
[i
]= av_clip_uint8(u
>>19);
489 vDest
[i
]= av_clip_uint8(v
>>19);
493 static inline void yuv2nv12XinC(int16_t *lumFilter
, int16_t **lumSrc
, int lumFilterSize
,
494 int16_t *chrFilter
, int16_t **chrSrc
, int chrFilterSize
,
495 uint8_t *dest
, uint8_t *uDest
, int dstW
, int chrDstW
, int dstFormat
)
497 //FIXME Optimize (just quickly writen not opti..)
499 for (i
=0; i
<dstW
; i
++)
503 for (j
=0; j
<lumFilterSize
; j
++)
504 val
+= lumSrc
[j
][i
] * lumFilter
[j
];
506 dest
[i
]= av_clip_uint8(val
>>19);
512 if (dstFormat
== PIX_FMT_NV12
)
513 for (i
=0; i
<chrDstW
; i
++)
518 for (j
=0; j
<chrFilterSize
; j
++)
520 u
+= chrSrc
[j
][i
] * chrFilter
[j
];
521 v
+= chrSrc
[j
][i
+ VOFW
] * chrFilter
[j
];
524 uDest
[2*i
]= av_clip_uint8(u
>>19);
525 uDest
[2*i
+1]= av_clip_uint8(v
>>19);
528 for (i
=0; i
<chrDstW
; i
++)
533 for (j
=0; j
<chrFilterSize
; j
++)
535 u
+= chrSrc
[j
][i
] * chrFilter
[j
];
536 v
+= chrSrc
[j
][i
+ VOFW
] * chrFilter
[j
];
539 uDest
[2*i
]= av_clip_uint8(v
>>19);
540 uDest
[2*i
+1]= av_clip_uint8(u
>>19);
544 #define YSCALE_YUV_2_PACKEDX_NOCLIP_C(type) \
545 for (i=0; i<(dstW>>1); i++){\
551 type av_unused *r, *b, *g;\
554 for (j=0; j<lumFilterSize; j++)\
556 Y1 += lumSrc[j][i2] * lumFilter[j];\
557 Y2 += lumSrc[j][i2+1] * lumFilter[j];\
559 for (j=0; j<chrFilterSize; j++)\
561 U += chrSrc[j][i] * chrFilter[j];\
562 V += chrSrc[j][i+VOFW] * chrFilter[j];\
569 #define YSCALE_YUV_2_PACKEDX_C(type) \
570 YSCALE_YUV_2_PACKEDX_NOCLIP_C(type)\
571 if ((Y1|Y2|U|V)&256)\
573 if (Y1>255) Y1=255; \
574 else if (Y1<0)Y1=0; \
575 if (Y2>255) Y2=255; \
576 else if (Y2<0)Y2=0; \
583 #define YSCALE_YUV_2_PACKEDX_FULL_C \
584 for (i=0; i<dstW; i++){\
591 for (j=0; j<lumFilterSize; j++){\
592 Y += lumSrc[j][i ] * lumFilter[j];\
594 for (j=0; j<chrFilterSize; j++){\
595 U += chrSrc[j][i ] * chrFilter[j];\
596 V += chrSrc[j][i+VOFW] * chrFilter[j];\
602 #define YSCALE_YUV_2_RGBX_FULL_C(rnd) \
603 YSCALE_YUV_2_PACKEDX_FULL_C\
604 Y-= c->yuv2rgb_y_offset;\
605 Y*= c->yuv2rgb_y_coeff;\
607 R= Y + V*c->yuv2rgb_v2r_coeff;\
608 G= Y + V*c->yuv2rgb_v2g_coeff + U*c->yuv2rgb_u2g_coeff;\
609 B= Y + U*c->yuv2rgb_u2b_coeff;\
610 if ((R|G|B)&(0xC0000000)){\
611 if (R>=(256<<22)) R=(256<<22)-1; \
613 if (G>=(256<<22)) G=(256<<22)-1; \
615 if (B>=(256<<22)) B=(256<<22)-1; \
620 #define YSCALE_YUV_2_GRAY16_C \
621 for (i=0; i<(dstW>>1); i++){\
630 for (j=0; j<lumFilterSize; j++)\
632 Y1 += lumSrc[j][i2] * lumFilter[j];\
633 Y2 += lumSrc[j][i2+1] * lumFilter[j];\
637 if ((Y1|Y2|U|V)&65536)\
639 if (Y1>65535) Y1=65535; \
640 else if (Y1<0)Y1=0; \
641 if (Y2>65535) Y2=65535; \
642 else if (Y2<0)Y2=0; \
645 #define YSCALE_YUV_2_RGBX_C(type) \
646 YSCALE_YUV_2_PACKEDX_C(type) /* FIXME fix tables so that cliping is not needed and then use _NOCLIP*/\
647 r = (type *)c->table_rV[V]; \
648 g = (type *)(c->table_gU[U] + c->table_gV[V]); \
649 b = (type *)c->table_bU[U]; \
651 #define YSCALE_YUV_2_PACKED2_C \
652 for (i=0; i<(dstW>>1); i++){ \
654 int Y1= (buf0[i2 ]*yalpha1+buf1[i2 ]*yalpha)>>19; \
655 int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>19; \
656 int U= (uvbuf0[i ]*uvalpha1+uvbuf1[i ]*uvalpha)>>19; \
657 int V= (uvbuf0[i+VOFW]*uvalpha1+uvbuf1[i+VOFW]*uvalpha)>>19; \
659 #define YSCALE_YUV_2_GRAY16_2_C \
660 for (i=0; i<(dstW>>1); i++){ \
662 int Y1= (buf0[i2 ]*yalpha1+buf1[i2 ]*yalpha)>>11; \
663 int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>11; \
665 #define YSCALE_YUV_2_RGB2_C(type) \
666 YSCALE_YUV_2_PACKED2_C\
668 r = (type *)c->table_rV[V];\
669 g = (type *)(c->table_gU[U] + c->table_gV[V]);\
670 b = (type *)c->table_bU[U];\
672 #define YSCALE_YUV_2_PACKED1_C \
673 for (i=0; i<(dstW>>1); i++){\
675 int Y1= buf0[i2 ]>>7;\
676 int Y2= buf0[i2+1]>>7;\
677 int U= (uvbuf1[i ])>>7;\
678 int V= (uvbuf1[i+VOFW])>>7;\
680 #define YSCALE_YUV_2_GRAY16_1_C \
681 for (i=0; i<(dstW>>1); i++){\
683 int Y1= buf0[i2 ]<<1;\
684 int Y2= buf0[i2+1]<<1;\
686 #define YSCALE_YUV_2_RGB1_C(type) \
687 YSCALE_YUV_2_PACKED1_C\
689 r = (type *)c->table_rV[V];\
690 g = (type *)(c->table_gU[U] + c->table_gV[V]);\
691 b = (type *)c->table_bU[U];\
693 #define YSCALE_YUV_2_PACKED1B_C \
694 for (i=0; i<(dstW>>1); i++){\
696 int Y1= buf0[i2 ]>>7;\
697 int Y2= buf0[i2+1]>>7;\
698 int U= (uvbuf0[i ] + uvbuf1[i ])>>8;\
699 int V= (uvbuf0[i+VOFW] + uvbuf1[i+VOFW])>>8;\
701 #define YSCALE_YUV_2_RGB1B_C(type) \
702 YSCALE_YUV_2_PACKED1B_C\
704 r = (type *)c->table_rV[V];\
705 g = (type *)(c->table_gU[U] + c->table_gV[V]);\
706 b = (type *)c->table_bU[U];\
708 #define YSCALE_YUV_2_MONO2_C \
709 const uint8_t * const d128=dither_8x8_220[y&7];\
710 uint8_t *g= c->table_gU[128] + c->table_gV[128];\
711 for (i=0; i<dstW-7; i+=8){\
713 acc = g[((buf0[i ]*yalpha1+buf1[i ]*yalpha)>>19) + d128[0]];\
714 acc+= acc + g[((buf0[i+1]*yalpha1+buf1[i+1]*yalpha)>>19) + d128[1]];\
715 acc+= acc + g[((buf0[i+2]*yalpha1+buf1[i+2]*yalpha)>>19) + d128[2]];\
716 acc+= acc + g[((buf0[i+3]*yalpha1+buf1[i+3]*yalpha)>>19) + d128[3]];\
717 acc+= acc + g[((buf0[i+4]*yalpha1+buf1[i+4]*yalpha)>>19) + d128[4]];\
718 acc+= acc + g[((buf0[i+5]*yalpha1+buf1[i+5]*yalpha)>>19) + d128[5]];\
719 acc+= acc + g[((buf0[i+6]*yalpha1+buf1[i+6]*yalpha)>>19) + d128[6]];\
720 acc+= acc + g[((buf0[i+7]*yalpha1+buf1[i+7]*yalpha)>>19) + d128[7]];\
721 ((uint8_t*)dest)[0]= c->dstFormat == PIX_FMT_MONOBLACK ? acc : ~acc;\
726 #define YSCALE_YUV_2_MONOX_C \
727 const uint8_t * const d128=dither_8x8_220[y&7];\
728 uint8_t *g= c->table_gU[128] + c->table_gV[128];\
730 for (i=0; i<dstW-1; i+=2){\
735 for (j=0; j<lumFilterSize; j++)\
737 Y1 += lumSrc[j][i] * lumFilter[j];\
738 Y2 += lumSrc[j][i+1] * lumFilter[j];\
749 acc+= acc + g[Y1+d128[(i+0)&7]];\
750 acc+= acc + g[Y2+d128[(i+1)&7]];\
752 ((uint8_t*)dest)[0]= c->dstFormat == PIX_FMT_MONOBLACK ? acc : ~acc;\
758 #define YSCALE_YUV_2_ANYRGB_C(func, func2, func_g16, func_monoblack)\
759 switch(c->dstFormat)\
763 case PIX_FMT_RGB32_1:\
764 case PIX_FMT_BGR32_1:\
766 ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];\
767 ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];\
772 ((uint8_t*)dest)[0]= r[Y1];\
773 ((uint8_t*)dest)[1]= g[Y1];\
774 ((uint8_t*)dest)[2]= b[Y1];\
775 ((uint8_t*)dest)[3]= r[Y2];\
776 ((uint8_t*)dest)[4]= g[Y2];\
777 ((uint8_t*)dest)[5]= b[Y2];\
783 ((uint8_t*)dest)[0]= b[Y1];\
784 ((uint8_t*)dest)[1]= g[Y1];\
785 ((uint8_t*)dest)[2]= r[Y1];\
786 ((uint8_t*)dest)[3]= b[Y2];\
787 ((uint8_t*)dest)[4]= g[Y2];\
788 ((uint8_t*)dest)[5]= r[Y2];\
792 case PIX_FMT_RGB565:\
793 case PIX_FMT_BGR565:\
795 const int dr1= dither_2x2_8[y&1 ][0];\
796 const int dg1= dither_2x2_4[y&1 ][0];\
797 const int db1= dither_2x2_8[(y&1)^1][0];\
798 const int dr2= dither_2x2_8[y&1 ][1];\
799 const int dg2= dither_2x2_4[y&1 ][1];\
800 const int db2= dither_2x2_8[(y&1)^1][1];\
802 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
803 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
807 case PIX_FMT_RGB555:\
808 case PIX_FMT_BGR555:\
810 const int dr1= dither_2x2_8[y&1 ][0];\
811 const int dg1= dither_2x2_8[y&1 ][1];\
812 const int db1= dither_2x2_8[(y&1)^1][0];\
813 const int dr2= dither_2x2_8[y&1 ][1];\
814 const int dg2= dither_2x2_8[y&1 ][0];\
815 const int db2= dither_2x2_8[(y&1)^1][1];\
817 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
818 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
825 const uint8_t * const d64= dither_8x8_73[y&7];\
826 const uint8_t * const d32= dither_8x8_32[y&7];\
828 ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];\
829 ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];\
836 const uint8_t * const d64= dither_8x8_73 [y&7];\
837 const uint8_t * const d128=dither_8x8_220[y&7];\
839 ((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]\
840 + ((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);\
844 case PIX_FMT_RGB4_BYTE:\
845 case PIX_FMT_BGR4_BYTE:\
847 const uint8_t * const d64= dither_8x8_73 [y&7];\
848 const uint8_t * const d128=dither_8x8_220[y&7];\
850 ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];\
851 ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];\
855 case PIX_FMT_MONOBLACK:\
856 case PIX_FMT_MONOWHITE:\
861 case PIX_FMT_YUYV422:\
863 ((uint8_t*)dest)[2*i2+0]= Y1;\
864 ((uint8_t*)dest)[2*i2+1]= U;\
865 ((uint8_t*)dest)[2*i2+2]= Y2;\
866 ((uint8_t*)dest)[2*i2+3]= V;\
869 case PIX_FMT_UYVY422:\
871 ((uint8_t*)dest)[2*i2+0]= U;\
872 ((uint8_t*)dest)[2*i2+1]= Y1;\
873 ((uint8_t*)dest)[2*i2+2]= V;\
874 ((uint8_t*)dest)[2*i2+3]= Y2;\
877 case PIX_FMT_GRAY16BE:\
879 ((uint8_t*)dest)[2*i2+0]= Y1>>8;\
880 ((uint8_t*)dest)[2*i2+1]= Y1;\
881 ((uint8_t*)dest)[2*i2+2]= Y2>>8;\
882 ((uint8_t*)dest)[2*i2+3]= Y2;\
885 case PIX_FMT_GRAY16LE:\
887 ((uint8_t*)dest)[2*i2+0]= Y1;\
888 ((uint8_t*)dest)[2*i2+1]= Y1>>8;\
889 ((uint8_t*)dest)[2*i2+2]= Y2;\
890 ((uint8_t*)dest)[2*i2+3]= Y2>>8;\
896 static inline void yuv2packedXinC(SwsContext *c, int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
897 int16_t *chrFilter
, int16_t **chrSrc
, int chrFilterSize
,
898 uint8_t *dest
, int dstW
, int y
)
901 YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGBX_C
, YSCALE_YUV_2_PACKEDX_C(void), YSCALE_YUV_2_GRAY16_C
, YSCALE_YUV_2_MONOX_C
)
904 static inline void yuv2rgbXinC_full(SwsContext
*c
, int16_t *lumFilter
, int16_t **lumSrc
, int lumFilterSize
,
905 int16_t *chrFilter
, int16_t **chrSrc
, int chrFilterSize
,
906 uint8_t *dest
, int dstW
, int y
)
909 int step
= fmt_depth(c
->dstFormat
)/8;
912 switch(c
->dstFormat
){
919 YSCALE_YUV_2_RGBX_FULL_C(1<<21)
933 YSCALE_YUV_2_RGBX_FULL_C(1<<21)
946 //Note: we have C, X86, MMX, MMX2, 3DNOW version therse no 3DNOW+MMX2 one
948 #if !defined (HAVE_MMX) || defined (RUNTIME_CPUDETECT) || !defined(CONFIG_GPL)
953 #if (defined (HAVE_ALTIVEC) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)
954 #define COMPILE_ALTIVEC
955 #endif //HAVE_ALTIVEC
956 #endif //ARCH_POWERPC
958 #if defined(ARCH_X86)
960 #if ((defined (HAVE_MMX) && !defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)
964 #if (defined (HAVE_MMX2) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)
968 #if ((defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)
969 #define COMPILE_3DNOW
971 #endif //ARCH_X86 || ARCH_X86_64
982 #define RENAME(a) a ## _C
983 #include "swscale_template.c"
986 #ifdef COMPILE_ALTIVEC
989 #define RENAME(a) a ## _altivec
990 #include "swscale_template.c"
993 #if defined(ARCH_X86)
1002 #define RENAME(a) a ## _X86
1003 #include "swscale_template.c"
1011 #define RENAME(a) a ## _MMX
1012 #include "swscale_template.c"
1021 #define RENAME(a) a ## _MMX2
1022 #include "swscale_template.c"
1026 #ifdef COMPILE_3DNOW
1031 #define RENAME(a) a ## _3DNow
1032 #include "swscale_template.c"
1035 #endif //ARCH_X86 || ARCH_X86_64
1037 // minor note: the HAVE_xyz is messed up after that line so don't use it
1039 static double getSplineCoeff(double a
, double b
, double c
, double d
, double dist
)
1041 // printf("%f %f %f %f %f\n", a,b,c,d,dist);
1042 if (dist
<=1.0) return ((d
*dist
+ c
)*dist
+ b
)*dist
+a
;
1043 else return getSplineCoeff( 0.0,
1050 static inline int initFilter(int16_t **outFilter
, int16_t **filterPos
, int *outFilterSize
, int xInc
,
1051 int srcW
, int dstW
, int filterAlign
, int one
, int flags
,
1052 SwsVector
*srcFilter
, SwsVector
*dstFilter
, double param
[2])
1058 int64_t *filter
=NULL
;
1059 int64_t *filter2
=NULL
;
1060 const int64_t fone
= 1LL<<54;
1062 #if defined(ARCH_X86)
1063 if (flags
& SWS_CPU_CAPS_MMX
)
1064 __asm__
volatile("emms\n\t"::: "memory"); //FIXME this should not be required but it IS (even for non-MMX versions)
1067 // Note the +1 is for the MMXscaler which reads over the end
1068 *filterPos
= av_malloc((dstW
+1)*sizeof(int16_t));
1070 if (FFABS(xInc
- 0x10000) <10) // unscaled
1074 filter
= av_mallocz(dstW
*sizeof(*filter
)*filterSize
);
1076 for (i
=0; i
<dstW
; i
++)
1078 filter
[i
*filterSize
]= fone
;
1083 else if (flags
&SWS_POINT
) // lame looking point sampling mode
1088 filter
= av_malloc(dstW
*sizeof(*filter
)*filterSize
);
1090 xDstInSrc
= xInc
/2 - 0x8000;
1091 for (i
=0; i
<dstW
; i
++)
1093 int xx
= (xDstInSrc
- ((filterSize
-1)<<15) + (1<<15))>>16;
1095 (*filterPos
)[i
]= xx
;
1100 else if ((xInc
<= (1<<16) && (flags
&SWS_AREA
)) || (flags
&SWS_FAST_BILINEAR
)) // bilinear upscale
1104 if (flags
&SWS_BICUBIC
) filterSize
= 4;
1105 else if (flags
&SWS_X
) filterSize
= 4;
1106 else filterSize
= 2; // SWS_BILINEAR / SWS_AREA
1107 filter
= av_malloc(dstW
*sizeof(*filter
)*filterSize
);
1109 xDstInSrc
= xInc
/2 - 0x8000;
1110 for (i
=0; i
<dstW
; i
++)
1112 int xx
= (xDstInSrc
- ((filterSize
-1)<<15) + (1<<15))>>16;
1115 (*filterPos
)[i
]= xx
;
1116 //Bilinear upscale / linear interpolate / Area averaging
1117 for (j
=0; j
<filterSize
; j
++)
1119 int64_t coeff
= fone
- FFABS((xx
<<16) - xDstInSrc
)*(fone
>>16);
1120 if (coeff
<0) coeff
=0;
1121 filter
[i
*filterSize
+ j
]= coeff
;
1132 if (flags
&SWS_BICUBIC
) sizeFactor
= 4;
1133 else if (flags
&SWS_X
) sizeFactor
= 8;
1134 else if (flags
&SWS_AREA
) sizeFactor
= 1; //downscale only, for upscale it is bilinear
1135 else if (flags
&SWS_GAUSS
) sizeFactor
= 8; // infinite ;)
1136 else if (flags
&SWS_LANCZOS
) sizeFactor
= param
[0] != SWS_PARAM_DEFAULT
? ceil(2*param
[0]) : 6;
1137 else if (flags
&SWS_SINC
) sizeFactor
= 20; // infinite ;)
1138 else if (flags
&SWS_SPLINE
) sizeFactor
= 20; // infinite ;)
1139 else if (flags
&SWS_BILINEAR
) sizeFactor
= 2;
1141 sizeFactor
= 0; //GCC warning killer
1145 if (xInc
<= 1<<16) filterSize
= 1 + sizeFactor
; // upscale
1146 else filterSize
= 1 + (sizeFactor
*srcW
+ dstW
- 1)/ dstW
;
1148 if (filterSize
> srcW
-2) filterSize
=srcW
-2;
1150 filter
= av_malloc(dstW
*sizeof(*filter
)*filterSize
);
1152 xDstInSrc
= xInc
- 0x10000;
1153 for (i
=0; i
<dstW
; i
++)
1155 int xx
= (xDstInSrc
- ((filterSize
-2)<<16)) / (1<<17);
1157 (*filterPos
)[i
]= xx
;
1158 for (j
=0; j
<filterSize
; j
++)
1160 int64_t d
= ((int64_t)FFABS((xx
<<17) - xDstInSrc
))<<13;
1166 floatd
= d
* (1.0/(1<<30));
1168 if (flags
& SWS_BICUBIC
)
1170 int64_t B
= (param
[0] != SWS_PARAM_DEFAULT
? param
[0] : 0) * (1<<24);
1171 int64_t C
= (param
[1] != SWS_PARAM_DEFAULT
? param
[1] : 0.6) * (1<<24);
1172 int64_t dd
= ( d
*d
)>>30;
1173 int64_t ddd
= (dd
*d
)>>30;
1176 coeff
= (12*(1<<24)-9*B
-6*C
)*ddd
+ (-18*(1<<24)+12*B
+6*C
)*dd
+ (6*(1<<24)-2*B
)*(1<<30);
1177 else if (d
< 1LL<<31)
1178 coeff
= (-B
-6*C
)*ddd
+ (6*B
+30*C
)*dd
+ (-12*B
-48*C
)*d
+ (8*B
+24*C
)*(1<<30);
1181 coeff
*= fone
>>(30+24);
1183 /* else if (flags & SWS_X)
1185 double p= param ? param*0.01 : 0.3;
1186 coeff = d ? sin(d*PI)/(d*PI) : 1.0;
1187 coeff*= pow(2.0, - p*d*d);
1189 else if (flags
& SWS_X
)
1191 double A
= param
[0] != SWS_PARAM_DEFAULT
? param
[0] : 1.0;
1198 if (c
<0.0) c
= -pow(-c
, A
);
1200 coeff
= (c
*0.5 + 0.5)*fone
;
1202 else if (flags
& SWS_AREA
)
1204 int64_t d2
= d
- (1<<29);
1205 if (d2
*xInc
< -(1LL<<(29+16))) coeff
= 1.0 * (1LL<<(30+16));
1206 else if (d2
*xInc
< (1LL<<(29+16))) coeff
= -d2
*xInc
+ (1LL<<(29+16));
1208 coeff
*= fone
>>(30+16);
1210 else if (flags
& SWS_GAUSS
)
1212 double p
= param
[0] != SWS_PARAM_DEFAULT
? param
[0] : 3.0;
1213 coeff
= (pow(2.0, - p
*floatd
*floatd
))*fone
;
1215 else if (flags
& SWS_SINC
)
1217 coeff
= (d
? sin(floatd
*PI
)/(floatd
*PI
) : 1.0)*fone
;
1219 else if (flags
& SWS_LANCZOS
)
1221 double p
= param
[0] != SWS_PARAM_DEFAULT
? param
[0] : 3.0;
1222 coeff
= (d
? sin(floatd
*PI
)*sin(floatd
*PI
/p
)/(floatd
*floatd
*PI
*PI
/p
) : 1.0)*fone
;
1223 if (floatd
>p
) coeff
=0;
1225 else if (flags
& SWS_BILINEAR
)
1228 if (coeff
<0) coeff
=0;
1229 coeff
*= fone
>> 30;
1231 else if (flags
& SWS_SPLINE
)
1233 double p
=-2.196152422706632;
1234 coeff
= getSplineCoeff(1.0, 0.0, p
, -p
-1.0, floatd
) * fone
;
1237 coeff
= 0.0; //GCC warning killer
1241 filter
[i
*filterSize
+ j
]= coeff
;
1248 /* apply src & dst Filter to filter -> filter2
1251 assert(filterSize
>0);
1252 filter2Size
= filterSize
;
1253 if (srcFilter
) filter2Size
+= srcFilter
->length
- 1;
1254 if (dstFilter
) filter2Size
+= dstFilter
->length
- 1;
1255 assert(filter2Size
>0);
1256 filter2
= av_mallocz(filter2Size
*dstW
*sizeof(*filter2
));
1258 for (i
=0; i
<dstW
; i
++)
1263 for (k
=0; k
<srcFilter
->length
; k
++){
1264 for (j
=0; j
<filterSize
; j
++)
1265 filter2
[i
*filter2Size
+ k
+ j
] += srcFilter
->coeff
[k
]*filter
[i
*filterSize
+ j
];
1268 for (j
=0; j
<filterSize
; j
++)
1269 filter2
[i
*filter2Size
+ j
]= filter
[i
*filterSize
+ j
];
1273 (*filterPos
)[i
]+= (filterSize
-1)/2 - (filter2Size
-1)/2;
1277 /* try to reduce the filter-size (step1 find size and shift left) */
1278 // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not).
1280 for (i
=dstW
-1; i
>=0; i
--)
1282 int min
= filter2Size
;
1286 /* get rid off near zero elements on the left by shifting left */
1287 for (j
=0; j
<filter2Size
; j
++)
1290 cutOff
+= FFABS(filter2
[i
*filter2Size
]);
1292 if (cutOff
> SWS_MAX_REDUCE_CUTOFF
*fone
) break;
1294 /* preserve monotonicity because the core can't handle the filter otherwise */
1295 if (i
<dstW
-1 && (*filterPos
)[i
] >= (*filterPos
)[i
+1]) break;
1297 // Move filter coeffs left
1298 for (k
=1; k
<filter2Size
; k
++)
1299 filter2
[i
*filter2Size
+ k
- 1]= filter2
[i
*filter2Size
+ k
];
1300 filter2
[i
*filter2Size
+ k
- 1]= 0;
1305 /* count near zeros on the right */
1306 for (j
=filter2Size
-1; j
>0; j
--)
1308 cutOff
+= FFABS(filter2
[i
*filter2Size
+ j
]);
1310 if (cutOff
> SWS_MAX_REDUCE_CUTOFF
*fone
) break;
1314 if (min
>minFilterSize
) minFilterSize
= min
;
1317 if (flags
& SWS_CPU_CAPS_ALTIVEC
) {
1318 // we can handle the special case 4,
1319 // so we don't want to go to the full 8
1320 if (minFilterSize
< 5)
1323 // we really don't want to waste our time
1324 // doing useless computation, so fall-back on
1325 // the scalar C code for very small filter.
1326 // vectorizing is worth it only if you have
1327 // decent-sized vector.
1328 if (minFilterSize
< 3)
1332 if (flags
& SWS_CPU_CAPS_MMX
) {
1333 // special case for unscaled vertical filtering
1334 if (minFilterSize
== 1 && filterAlign
== 2)
1338 assert(minFilterSize
> 0);
1339 filterSize
= (minFilterSize
+(filterAlign
-1)) & (~(filterAlign
-1));
1340 assert(filterSize
> 0);
1341 filter
= av_malloc(filterSize
*dstW
*sizeof(*filter
));
1342 if (filterSize
>= MAX_FILTER_SIZE
*16/((flags
&SWS_ACCURATE_RND
) ? APCK_SIZE
: 16) || !filter
)
1344 *outFilterSize
= filterSize
;
1346 if (flags
&SWS_PRINT_INFO
)
1347 av_log(NULL
, AV_LOG_VERBOSE
, "SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size
, filterSize
);
1348 /* try to reduce the filter-size (step2 reduce it) */
1349 for (i
=0; i
<dstW
; i
++)
1353 for (j
=0; j
<filterSize
; j
++)
1355 if (j
>=filter2Size
) filter
[i
*filterSize
+ j
]= 0;
1356 else filter
[i
*filterSize
+ j
]= filter2
[i
*filter2Size
+ j
];
1357 if((flags
& SWS_BITEXACT
) && j
>=minFilterSize
)
1358 filter
[i
*filterSize
+ j
]= 0;
1363 //FIXME try to align filterpos if possible
1366 for (i
=0; i
<dstW
; i
++)
1369 if ((*filterPos
)[i
] < 0)
1371 // Move filter coeffs left to compensate for filterPos
1372 for (j
=1; j
<filterSize
; j
++)
1374 int left
= FFMAX(j
+ (*filterPos
)[i
], 0);
1375 filter
[i
*filterSize
+ left
] += filter
[i
*filterSize
+ j
];
1376 filter
[i
*filterSize
+ j
]=0;
1381 if ((*filterPos
)[i
] + filterSize
> srcW
)
1383 int shift
= (*filterPos
)[i
] + filterSize
- srcW
;
1384 // Move filter coeffs right to compensate for filterPos
1385 for (j
=filterSize
-2; j
>=0; j
--)
1387 int right
= FFMIN(j
+ shift
, filterSize
-1);
1388 filter
[i
*filterSize
+right
] += filter
[i
*filterSize
+j
];
1389 filter
[i
*filterSize
+j
]=0;
1391 (*filterPos
)[i
]= srcW
- filterSize
;
1395 // Note the +1 is for the MMXscaler which reads over the end
1396 /* align at 16 for AltiVec (needed by hScale_altivec_real) */
1397 *outFilter
= av_mallocz(*outFilterSize
*(dstW
+1)*sizeof(int16_t));
1399 /* Normalize & Store in outFilter */
1400 for (i
=0; i
<dstW
; i
++)
1406 for (j
=0; j
<filterSize
; j
++)
1408 sum
+= filter
[i
*filterSize
+ j
];
1410 sum
= (sum
+ one
/2)/ one
;
1411 for (j
=0; j
<*outFilterSize
; j
++)
1413 int64_t v
= filter
[i
*filterSize
+ j
] + error
;
1414 int intV
= ROUNDED_DIV(v
, sum
);
1415 (*outFilter
)[i
*(*outFilterSize
) + j
]= intV
;
1416 error
= v
- intV
*sum
;
1420 (*filterPos
)[dstW
]= (*filterPos
)[dstW
-1]; // the MMX scaler will read over the end
1421 for (i
=0; i
<*outFilterSize
; i
++)
1423 int j
= dstW
*(*outFilterSize
);
1424 (*outFilter
)[j
+ i
]= (*outFilter
)[j
+ i
- (*outFilterSize
)];
1435 static void initMMX2HScaler(int dstW
, int xInc
, uint8_t *funnyCode
, int16_t *filter
, int32_t *filterPos
, int numSplits
)
1438 long imm8OfPShufW1A
;
1439 long imm8OfPShufW2A
;
1440 long fragmentLengthA
;
1442 long imm8OfPShufW1B
;
1443 long imm8OfPShufW2B
;
1444 long fragmentLengthB
;
1449 // create an optimized horizontal scaling routine
1457 "movq (%%"REG_d
", %%"REG_a
"), %%mm3 \n\t"
1458 "movd (%%"REG_c
", %%"REG_S
"), %%mm0 \n\t"
1459 "movd 1(%%"REG_c
", %%"REG_S
"), %%mm1 \n\t"
1460 "punpcklbw %%mm7, %%mm1 \n\t"
1461 "punpcklbw %%mm7, %%mm0 \n\t"
1462 "pshufw $0xFF, %%mm1, %%mm1 \n\t"
1464 "pshufw $0xFF, %%mm0, %%mm0 \n\t"
1466 "psubw %%mm1, %%mm0 \n\t"
1467 "movl 8(%%"REG_b
", %%"REG_a
"), %%esi \n\t"
1468 "pmullw %%mm3, %%mm0 \n\t"
1469 "psllw $7, %%mm1 \n\t"
1470 "paddw %%mm1, %%mm0 \n\t"
1472 "movq %%mm0, (%%"REG_D
", %%"REG_a
") \n\t"
1474 "add $8, %%"REG_a
" \n\t"
1478 "lea " LOCAL_MANGLE(0b
) ", %0 \n\t"
1479 "lea " LOCAL_MANGLE(1b
) ", %1 \n\t"
1480 "lea " LOCAL_MANGLE(2b
) ", %2 \n\t"
1485 "lea " LOCAL_MANGLE(9b
) ", %3 \n\t"
1489 :"=r" (fragmentA
), "=r" (imm8OfPShufW1A
), "=r" (imm8OfPShufW2A
),
1490 "=r" (fragmentLengthA
)
1497 "movq (%%"REG_d
", %%"REG_a
"), %%mm3 \n\t"
1498 "movd (%%"REG_c
", %%"REG_S
"), %%mm0 \n\t"
1499 "punpcklbw %%mm7, %%mm0 \n\t"
1500 "pshufw $0xFF, %%mm0, %%mm1 \n\t"
1502 "pshufw $0xFF, %%mm0, %%mm0 \n\t"
1504 "psubw %%mm1, %%mm0 \n\t"
1505 "movl 8(%%"REG_b
", %%"REG_a
"), %%esi \n\t"
1506 "pmullw %%mm3, %%mm0 \n\t"
1507 "psllw $7, %%mm1 \n\t"
1508 "paddw %%mm1, %%mm0 \n\t"
1510 "movq %%mm0, (%%"REG_D
", %%"REG_a
") \n\t"
1512 "add $8, %%"REG_a
" \n\t"
1516 "lea " LOCAL_MANGLE(0b
) ", %0 \n\t"
1517 "lea " LOCAL_MANGLE(1b
) ", %1 \n\t"
1518 "lea " LOCAL_MANGLE(2b
) ", %2 \n\t"
1523 "lea " LOCAL_MANGLE(9b
) ", %3 \n\t"
1527 :"=r" (fragmentB
), "=r" (imm8OfPShufW1B
), "=r" (imm8OfPShufW2B
),
1528 "=r" (fragmentLengthB
)
1531 xpos
= 0; //lumXInc/2 - 0x8000; // difference between pixel centers
1534 for (i
=0; i
<dstW
/numSplits
; i
++)
1541 int b
=((xpos
+xInc
)>>16) - xx
;
1542 int c
=((xpos
+xInc
*2)>>16) - xx
;
1543 int d
=((xpos
+xInc
*3)>>16) - xx
;
1545 filter
[i
] = (( xpos
& 0xFFFF) ^ 0xFFFF)>>9;
1546 filter
[i
+1] = (((xpos
+xInc
) & 0xFFFF) ^ 0xFFFF)>>9;
1547 filter
[i
+2] = (((xpos
+xInc
*2) & 0xFFFF) ^ 0xFFFF)>>9;
1548 filter
[i
+3] = (((xpos
+xInc
*3) & 0xFFFF) ^ 0xFFFF)>>9;
1553 int maxShift
= 3-(d
+1);
1556 memcpy(funnyCode
+ fragmentPos
, fragmentB
, fragmentLengthB
);
1558 funnyCode
[fragmentPos
+ imm8OfPShufW1B
]=
1559 (a
+1) | ((b
+1)<<2) | ((c
+1)<<4) | ((d
+1)<<6);
1560 funnyCode
[fragmentPos
+ imm8OfPShufW2B
]=
1561 a
| (b
<<2) | (c
<<4) | (d
<<6);
1563 if (i
+3>=dstW
) shift
=maxShift
; //avoid overread
1564 else if ((filterPos
[i
/2]&3) <= maxShift
) shift
=filterPos
[i
/2]&3; //Align
1566 if (shift
&& i
>=shift
)
1568 funnyCode
[fragmentPos
+ imm8OfPShufW1B
]+= 0x55*shift
;
1569 funnyCode
[fragmentPos
+ imm8OfPShufW2B
]+= 0x55*shift
;
1570 filterPos
[i
/2]-=shift
;
1573 fragmentPos
+= fragmentLengthB
;
1580 memcpy(funnyCode
+ fragmentPos
, fragmentA
, fragmentLengthA
);
1582 funnyCode
[fragmentPos
+ imm8OfPShufW1A
]=
1583 funnyCode
[fragmentPos
+ imm8OfPShufW2A
]=
1584 a
| (b
<<2) | (c
<<4) | (d
<<6);
1586 if (i
+4>=dstW
) shift
=maxShift
; //avoid overread
1587 else if ((filterPos
[i
/2]&3) <= maxShift
) shift
=filterPos
[i
/2]&3; //partial align
1589 if (shift
&& i
>=shift
)
1591 funnyCode
[fragmentPos
+ imm8OfPShufW1A
]+= 0x55*shift
;
1592 funnyCode
[fragmentPos
+ imm8OfPShufW2A
]+= 0x55*shift
;
1593 filterPos
[i
/2]-=shift
;
1596 fragmentPos
+= fragmentLengthA
;
1599 funnyCode
[fragmentPos
]= RET
;
1603 filterPos
[i
/2]= xpos
>>16; // needed to jump to the next part
1605 #endif /* COMPILE_MMX2 */
1607 static void globalInit(void){
1608 // generating tables:
1610 for (i
=0; i
<768; i
++){
1611 int c
= av_clip_uint8(i
-256);
1616 static SwsFunc
getSwsFunc(int flags
){
1618 #if defined(RUNTIME_CPUDETECT) && defined (CONFIG_GPL)
1619 #if defined(ARCH_X86)
1620 // ordered per speed fastest first
1621 if (flags
& SWS_CPU_CAPS_MMX2
)
1622 return swScale_MMX2
;
1623 else if (flags
& SWS_CPU_CAPS_3DNOW
)
1624 return swScale_3DNow
;
1625 else if (flags
& SWS_CPU_CAPS_MMX
)
1632 if (flags
& SWS_CPU_CAPS_ALTIVEC
)
1633 return swScale_altivec
;
1638 #endif /* defined(ARCH_X86) */
1639 #else //RUNTIME_CPUDETECT
1641 return swScale_MMX2
;
1642 #elif defined (HAVE_3DNOW)
1643 return swScale_3DNow
;
1644 #elif defined (HAVE_MMX)
1646 #elif defined (HAVE_ALTIVEC)
1647 return swScale_altivec
;
1651 #endif //!RUNTIME_CPUDETECT
1654 static int PlanarToNV12Wrapper(SwsContext
*c
, uint8_t* src
[], int srcStride
[], int srcSliceY
,
1655 int srcSliceH
, uint8_t* dstParam
[], int dstStride
[]){
1656 uint8_t *dst
=dstParam
[0] + dstStride
[0]*srcSliceY
;
1658 if (dstStride
[0]==srcStride
[0] && srcStride
[0] > 0)
1659 memcpy(dst
, src
[0], srcSliceH
*dstStride
[0]);
1663 uint8_t *srcPtr
= src
[0];
1664 uint8_t *dstPtr
= dst
;
1665 for (i
=0; i
<srcSliceH
; i
++)
1667 memcpy(dstPtr
, srcPtr
, c
->srcW
);
1668 srcPtr
+= srcStride
[0];
1669 dstPtr
+= dstStride
[0];
1672 dst
= dstParam
[1] + dstStride
[1]*srcSliceY
/2;
1673 if (c
->dstFormat
== PIX_FMT_NV12
)
1674 interleaveBytes(src
[1], src
[2], dst
, c
->srcW
/2, srcSliceH
/2, srcStride
[1], srcStride
[2], dstStride
[0]);
1676 interleaveBytes(src
[2], src
[1], dst
, c
->srcW
/2, srcSliceH
/2, srcStride
[2], srcStride
[1], dstStride
[0]);
1681 static int PlanarToYuy2Wrapper(SwsContext
*c
, uint8_t* src
[], int srcStride
[], int srcSliceY
,
1682 int srcSliceH
, uint8_t* dstParam
[], int dstStride
[]){
1683 uint8_t *dst
=dstParam
[0] + dstStride
[0]*srcSliceY
;
1685 yv12toyuy2(src
[0], src
[1], src
[2], dst
, c
->srcW
, srcSliceH
, srcStride
[0], srcStride
[1], dstStride
[0]);
1690 static int PlanarToUyvyWrapper(SwsContext
*c
, uint8_t* src
[], int srcStride
[], int srcSliceY
,
1691 int srcSliceH
, uint8_t* dstParam
[], int dstStride
[]){
1692 uint8_t *dst
=dstParam
[0] + dstStride
[0]*srcSliceY
;
1694 yv12touyvy(src
[0], src
[1], src
[2], dst
, c
->srcW
, srcSliceH
, srcStride
[0], srcStride
[1], dstStride
[0]);
1699 static int YUV422PToYuy2Wrapper(SwsContext
*c
, uint8_t* src
[], int srcStride
[], int srcSliceY
,
1700 int srcSliceH
, uint8_t* dstParam
[], int dstStride
[]){
1701 uint8_t *dst
=dstParam
[0] + dstStride
[0]*srcSliceY
;
1703 yuv422ptoyuy2(src
[0],src
[1],src
[2],dst
,c
->srcW
,srcSliceH
,srcStride
[0],srcStride
[1],dstStride
[0]);
1708 static int YUV422PToUyvyWrapper(SwsContext
*c
, uint8_t* src
[], int srcStride
[], int srcSliceY
,
1709 int srcSliceH
, uint8_t* dstParam
[], int dstStride
[]){
1710 uint8_t *dst
=dstParam
[0] + dstStride
[0]*srcSliceY
;
1712 yuv422ptouyvy(src
[0],src
[1],src
[2],dst
,c
->srcW
,srcSliceH
,srcStride
[0],srcStride
[1],dstStride
[0]);
1717 static int pal2rgbWrapper(SwsContext
*c
, uint8_t* src
[], int srcStride
[], int srcSliceY
,
1718 int srcSliceH
, uint8_t* dst
[], int dstStride
[]){
1719 const enum PixelFormat srcFormat
= c
->srcFormat
;
1720 const enum PixelFormat dstFormat
= c
->dstFormat
;
1721 void (*conv
)(const uint8_t *src
, uint8_t *dst
, long num_pixels
,
1722 const uint8_t *palette
)=NULL
;
1724 uint8_t *dstPtr
= dst
[0] + dstStride
[0]*srcSliceY
;
1725 uint8_t *srcPtr
= src
[0];
1727 if (!usePal(srcFormat
))
1728 av_log(c
, AV_LOG_ERROR
, "internal error %s -> %s converter\n",
1729 sws_format_name(srcFormat
), sws_format_name(dstFormat
));
1732 case PIX_FMT_RGB32
: conv
= palette8topacked32
; break;
1733 case PIX_FMT_BGR32
: conv
= palette8topacked32
; break;
1734 case PIX_FMT_BGR32_1
: conv
= palette8topacked32
; break;
1735 case PIX_FMT_RGB32_1
: conv
= palette8topacked32
; break;
1736 case PIX_FMT_RGB24
: conv
= palette8topacked24
; break;
1737 case PIX_FMT_BGR24
: conv
= palette8topacked24
; break;
1738 default: av_log(c
, AV_LOG_ERROR
, "internal error %s -> %s converter\n",
1739 sws_format_name(srcFormat
), sws_format_name(dstFormat
)); break;
1743 for (i
=0; i
<srcSliceH
; i
++) {
1744 conv(srcPtr
, dstPtr
, c
->srcW
, c
->pal_rgb
);
1745 srcPtr
+= srcStride
[0];
1746 dstPtr
+= dstStride
[0];
1752 /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */
1753 static int rgb2rgbWrapper(SwsContext
*c
, uint8_t* src
[], int srcStride
[], int srcSliceY
,
1754 int srcSliceH
, uint8_t* dst
[], int dstStride
[]){
1755 const enum PixelFormat srcFormat
= c
->srcFormat
;
1756 const enum PixelFormat dstFormat
= c
->dstFormat
;
1757 const int srcBpp
= (fmt_depth(srcFormat
) + 7) >> 3;
1758 const int dstBpp
= (fmt_depth(dstFormat
) + 7) >> 3;
1759 const int srcId
= fmt_depth(srcFormat
) >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */
1760 const int dstId
= fmt_depth(dstFormat
) >> 2;
1761 void (*conv
)(const uint8_t *src
, uint8_t *dst
, long src_size
)=NULL
;
1764 if ( (isBGR(srcFormat
) && isBGR(dstFormat
))
1765 || (isRGB(srcFormat
) && isRGB(dstFormat
))){
1766 switch(srcId
| (dstId
<<4)){
1767 case 0x34: conv
= rgb16to15
; break;
1768 case 0x36: conv
= rgb24to15
; break;
1769 case 0x38: conv
= rgb32to15
; break;
1770 case 0x43: conv
= rgb15to16
; break;
1771 case 0x46: conv
= rgb24to16
; break;
1772 case 0x48: conv
= rgb32to16
; break;
1773 case 0x63: conv
= rgb15to24
; break;
1774 case 0x64: conv
= rgb16to24
; break;
1775 case 0x68: conv
= rgb32to24
; break;
1776 case 0x83: conv
= rgb15to32
; break;
1777 case 0x84: conv
= rgb16to32
; break;
1778 case 0x86: conv
= rgb24to32
; break;
1779 default: av_log(c
, AV_LOG_ERROR
, "internal error %s -> %s converter\n",
1780 sws_format_name(srcFormat
), sws_format_name(dstFormat
)); break;
1782 }else if ( (isBGR(srcFormat
) && isRGB(dstFormat
))
1783 || (isRGB(srcFormat
) && isBGR(dstFormat
))){
1784 switch(srcId
| (dstId
<<4)){
1785 case 0x33: conv
= rgb15tobgr15
; break;
1786 case 0x34: conv
= rgb16tobgr15
; break;
1787 case 0x36: conv
= rgb24tobgr15
; break;
1788 case 0x38: conv
= rgb32tobgr15
; break;
1789 case 0x43: conv
= rgb15tobgr16
; break;
1790 case 0x44: conv
= rgb16tobgr16
; break;
1791 case 0x46: conv
= rgb24tobgr16
; break;
1792 case 0x48: conv
= rgb32tobgr16
; break;
1793 case 0x63: conv
= rgb15tobgr24
; break;
1794 case 0x64: conv
= rgb16tobgr24
; break;
1795 case 0x66: conv
= rgb24tobgr24
; break;
1796 case 0x68: conv
= rgb32tobgr24
; break;
1797 case 0x83: conv
= rgb15tobgr32
; break;
1798 case 0x84: conv
= rgb16tobgr32
; break;
1799 case 0x86: conv
= rgb24tobgr32
; break;
1800 case 0x88: conv
= rgb32tobgr32
; break;
1801 default: av_log(c
, AV_LOG_ERROR
, "internal error %s -> %s converter\n",
1802 sws_format_name(srcFormat
), sws_format_name(dstFormat
)); break;
1805 av_log(c
, AV_LOG_ERROR
, "internal error %s -> %s converter\n",
1806 sws_format_name(srcFormat
), sws_format_name(dstFormat
));
1811 uint8_t *srcPtr
= src
[0];
1812 if(srcFormat
== PIX_FMT_RGB32_1
|| srcFormat
== PIX_FMT_BGR32_1
)
1813 srcPtr
+= ALT32_CORR
;
1815 if (dstStride
[0]*srcBpp
== srcStride
[0]*dstBpp
&& srcStride
[0] > 0)
1816 conv(srcPtr
, dst
[0] + dstStride
[0]*srcSliceY
, srcSliceH
*srcStride
[0]);
1820 uint8_t *dstPtr
= dst
[0] + dstStride
[0]*srcSliceY
;
1822 for (i
=0; i
<srcSliceH
; i
++)
1824 conv(srcPtr
, dstPtr
, c
->srcW
*srcBpp
);
1825 srcPtr
+= srcStride
[0];
1826 dstPtr
+= dstStride
[0];
1833 static int bgr24toyv12Wrapper(SwsContext
*c
, uint8_t* src
[], int srcStride
[], int srcSliceY
,
1834 int srcSliceH
, uint8_t* dst
[], int dstStride
[]){
1838 dst
[0]+ srcSliceY
*dstStride
[0],
1839 dst
[1]+(srcSliceY
>>1)*dstStride
[1],
1840 dst
[2]+(srcSliceY
>>1)*dstStride
[2],
1842 dstStride
[0], dstStride
[1], srcStride
[0]);
1846 static int yvu9toyv12Wrapper(SwsContext
*c
, uint8_t* src
[], int srcStride
[], int srcSliceY
,
1847 int srcSliceH
, uint8_t* dst
[], int dstStride
[]){
1851 if (srcStride
[0]==dstStride
[0] && srcStride
[0] > 0)
1852 memcpy(dst
[0]+ srcSliceY
*dstStride
[0], src
[0], srcStride
[0]*srcSliceH
);
1854 uint8_t *srcPtr
= src
[0];
1855 uint8_t *dstPtr
= dst
[0] + dstStride
[0]*srcSliceY
;
1857 for (i
=0; i
<srcSliceH
; i
++)
1859 memcpy(dstPtr
, srcPtr
, c
->srcW
);
1860 srcPtr
+= srcStride
[0];
1861 dstPtr
+= dstStride
[0];
1865 if (c
->dstFormat
==PIX_FMT_YUV420P
){
1866 planar2x(src
[1], dst
[1], c
->chrSrcW
, c
->chrSrcH
, srcStride
[1], dstStride
[1]);
1867 planar2x(src
[2], dst
[2], c
->chrSrcW
, c
->chrSrcH
, srcStride
[2], dstStride
[2]);
1869 planar2x(src
[1], dst
[2], c
->chrSrcW
, c
->chrSrcH
, srcStride
[1], dstStride
[2]);
1870 planar2x(src
[2], dst
[1], c
->chrSrcW
, c
->chrSrcH
, srcStride
[2], dstStride
[1]);
1875 /* unscaled copy like stuff (assumes nearly identical formats) */
1876 static int packedCopy(SwsContext
*c
, uint8_t* src
[], int srcStride
[], int srcSliceY
,
1877 int srcSliceH
, uint8_t* dst
[], int dstStride
[])
1879 if (dstStride
[0]==srcStride
[0] && srcStride
[0] > 0)
1880 memcpy(dst
[0] + dstStride
[0]*srcSliceY
, src
[0], srcSliceH
*dstStride
[0]);
1884 uint8_t *srcPtr
= src
[0];
1885 uint8_t *dstPtr
= dst
[0] + dstStride
[0]*srcSliceY
;
1888 /* universal length finder */
1889 while(length
+c
->srcW
<= FFABS(dstStride
[0])
1890 && length
+c
->srcW
<= FFABS(srcStride
[0])) length
+= c
->srcW
;
1893 for (i
=0; i
<srcSliceH
; i
++)
1895 memcpy(dstPtr
, srcPtr
, length
);
1896 srcPtr
+= srcStride
[0];
1897 dstPtr
+= dstStride
[0];
1903 static int planarCopy(SwsContext
*c
, uint8_t* src
[], int srcStride
[], int srcSliceY
,
1904 int srcSliceH
, uint8_t* dst
[], int dstStride
[])
1907 for (plane
=0; plane
<3; plane
++)
1909 int length
= plane
==0 ? c
->srcW
: -((-c
->srcW
)>>c
->chrDstHSubSample
);
1910 int y
= plane
==0 ? srcSliceY
: -((-srcSliceY
)>>c
->chrDstVSubSample
);
1911 int height
= plane
==0 ? srcSliceH
: -((-srcSliceH
)>>c
->chrDstVSubSample
);
1913 if ((isGray(c
->srcFormat
) || isGray(c
->dstFormat
)) && plane
>0)
1915 if (!isGray(c
->dstFormat
))
1916 memset(dst
[plane
], 128, dstStride
[plane
]*height
);
1920 if (dstStride
[plane
]==srcStride
[plane
] && srcStride
[plane
] > 0)
1921 memcpy(dst
[plane
] + dstStride
[plane
]*y
, src
[plane
], height
*dstStride
[plane
]);
1925 uint8_t *srcPtr
= src
[plane
];
1926 uint8_t *dstPtr
= dst
[plane
] + dstStride
[plane
]*y
;
1927 for (i
=0; i
<height
; i
++)
1929 memcpy(dstPtr
, srcPtr
, length
);
1930 srcPtr
+= srcStride
[plane
];
1931 dstPtr
+= dstStride
[plane
];
1939 static int gray16togray(SwsContext
*c
, uint8_t* src
[], int srcStride
[], int srcSliceY
,
1940 int srcSliceH
, uint8_t* dst
[], int dstStride
[]){
1942 int length
= c
->srcW
;
1944 int height
= srcSliceH
;
1946 uint8_t *srcPtr
= src
[0];
1947 uint8_t *dstPtr
= dst
[0] + dstStride
[0]*y
;
1949 if (!isGray(c
->dstFormat
)){
1950 int height
= -((-srcSliceH
)>>c
->chrDstVSubSample
);
1951 memset(dst
[1], 128, dstStride
[1]*height
);
1952 memset(dst
[2], 128, dstStride
[2]*height
);
1954 if (c
->srcFormat
== PIX_FMT_GRAY16LE
) srcPtr
++;
1955 for (i
=0; i
<height
; i
++)
1957 for (j
=0; j
<length
; j
++) dstPtr
[j
] = srcPtr
[j
<<1];
1958 srcPtr
+= srcStride
[0];
1959 dstPtr
+= dstStride
[0];
1964 static int graytogray16(SwsContext
*c
, uint8_t* src
[], int srcStride
[], int srcSliceY
,
1965 int srcSliceH
, uint8_t* dst
[], int dstStride
[]){
1967 int length
= c
->srcW
;
1969 int height
= srcSliceH
;
1971 uint8_t *srcPtr
= src
[0];
1972 uint8_t *dstPtr
= dst
[0] + dstStride
[0]*y
;
1973 for (i
=0; i
<height
; i
++)
1975 for (j
=0; j
<length
; j
++)
1977 dstPtr
[j
<<1] = srcPtr
[j
];
1978 dstPtr
[(j
<<1)+1] = srcPtr
[j
];
1980 srcPtr
+= srcStride
[0];
1981 dstPtr
+= dstStride
[0];
1986 static int gray16swap(SwsContext
*c
, uint8_t* src
[], int srcStride
[], int srcSliceY
,
1987 int srcSliceH
, uint8_t* dst
[], int dstStride
[]){
1989 int length
= c
->srcW
;
1991 int height
= srcSliceH
;
1993 uint16_t *srcPtr
= (uint16_t*)src
[0];
1994 uint16_t *dstPtr
= (uint16_t*)(dst
[0] + dstStride
[0]*y
/2);
1995 for (i
=0; i
<height
; i
++)
1997 for (j
=0; j
<length
; j
++) dstPtr
[j
] = bswap_16(srcPtr
[j
]);
1998 srcPtr
+= srcStride
[0]/2;
1999 dstPtr
+= dstStride
[0]/2;
2005 static void getSubSampleFactors(int *h
, int *v
, int format
){
2007 case PIX_FMT_UYVY422
:
2008 case PIX_FMT_YUYV422
:
2012 case PIX_FMT_YUV420P
:
2013 case PIX_FMT_YUVA420P
:
2014 case PIX_FMT_GRAY16BE
:
2015 case PIX_FMT_GRAY16LE
:
2016 case PIX_FMT_GRAY8
: //FIXME remove after different subsamplings are fully implemented
2022 case PIX_FMT_YUV440P
:
2026 case PIX_FMT_YUV410P
:
2030 case PIX_FMT_YUV444P
:
2034 case PIX_FMT_YUV422P
:
2038 case PIX_FMT_YUV411P
:
2049 static uint16_t roundToInt16(int64_t f
){
2050 int r
= (f
+ (1<<15))>>16;
2051 if (r
<-0x7FFF) return 0x8000;
2052 else if (r
> 0x7FFF) return 0x7FFF;
2057 * @param inv_table the yuv2rgb coeffs, normally Inverse_Table_6_9[x]
2058 * @param fullRange if 1 then the luma range is 0..255 if 0 it is 16..235
2059 * @return -1 if not supported
2061 int sws_setColorspaceDetails(SwsContext
*c
, const int inv_table
[4], int srcRange
, const int table
[4], int dstRange
, int brightness
, int contrast
, int saturation
){
2062 int64_t crv
= inv_table
[0];
2063 int64_t cbu
= inv_table
[1];
2064 int64_t cgu
= -inv_table
[2];
2065 int64_t cgv
= -inv_table
[3];
2069 memcpy(c
->srcColorspaceTable
, inv_table
, sizeof(int)*4);
2070 memcpy(c
->dstColorspaceTable
, table
, sizeof(int)*4);
2072 c
->brightness
= brightness
;
2073 c
->contrast
= contrast
;
2074 c
->saturation
= saturation
;
2075 c
->srcRange
= srcRange
;
2076 c
->dstRange
= dstRange
;
2077 if (isYUV(c
->dstFormat
) || isGray(c
->dstFormat
)) return 0;
2079 c
->uOffset
= 0x0400040004000400LL
;
2080 c
->vOffset
= 0x0400040004000400LL
;
2086 crv
= (crv
*224) / 255;
2087 cbu
= (cbu
*224) / 255;
2088 cgu
= (cgu
*224) / 255;
2089 cgv
= (cgv
*224) / 255;
2092 cy
= (cy
*contrast
)>>16;
2093 crv
= (crv
*contrast
* saturation
)>>32;
2094 cbu
= (cbu
*contrast
* saturation
)>>32;
2095 cgu
= (cgu
*contrast
* saturation
)>>32;
2096 cgv
= (cgv
*contrast
* saturation
)>>32;
2098 oy
-= 256*brightness
;
2100 c
->yCoeff
= roundToInt16(cy
*8192) * 0x0001000100010001ULL
;
2101 c
->vrCoeff
= roundToInt16(crv
*8192) * 0x0001000100010001ULL
;
2102 c
->ubCoeff
= roundToInt16(cbu
*8192) * 0x0001000100010001ULL
;
2103 c
->vgCoeff
= roundToInt16(cgv
*8192) * 0x0001000100010001ULL
;
2104 c
->ugCoeff
= roundToInt16(cgu
*8192) * 0x0001000100010001ULL
;
2105 c
->yOffset
= roundToInt16(oy
* 8) * 0x0001000100010001ULL
;
2107 c
->yuv2rgb_y_coeff
= (int16_t)roundToInt16(cy
<<13);
2108 c
->yuv2rgb_y_offset
= (int16_t)roundToInt16(oy
<< 9);
2109 c
->yuv2rgb_v2r_coeff
= (int16_t)roundToInt16(crv
<<13);
2110 c
->yuv2rgb_v2g_coeff
= (int16_t)roundToInt16(cgv
<<13);
2111 c
->yuv2rgb_u2g_coeff
= (int16_t)roundToInt16(cgu
<<13);
2112 c
->yuv2rgb_u2b_coeff
= (int16_t)roundToInt16(cbu
<<13);
2114 yuv2rgb_c_init_tables(c
, inv_table
, srcRange
, brightness
, contrast
, saturation
);
2117 #ifdef COMPILE_ALTIVEC
2118 if (c
->flags
& SWS_CPU_CAPS_ALTIVEC
)
2119 yuv2rgb_altivec_init_tables (c
, inv_table
, brightness
, contrast
, saturation
);
2125 * @return -1 if not supported
2127 int sws_getColorspaceDetails(SwsContext
*c
, int **inv_table
, int *srcRange
, int **table
, int *dstRange
, int *brightness
, int *contrast
, int *saturation
){
2128 if (isYUV(c
->dstFormat
) || isGray(c
->dstFormat
)) return -1;
2130 *inv_table
= c
->srcColorspaceTable
;
2131 *table
= c
->dstColorspaceTable
;
2132 *srcRange
= c
->srcRange
;
2133 *dstRange
= c
->dstRange
;
2134 *brightness
= c
->brightness
;
2135 *contrast
= c
->contrast
;
2136 *saturation
= c
->saturation
;
2141 static int handle_jpeg(enum PixelFormat
*format
)
2144 case PIX_FMT_YUVJ420P
:
2145 *format
= PIX_FMT_YUV420P
;
2147 case PIX_FMT_YUVJ422P
:
2148 *format
= PIX_FMT_YUV422P
;
2150 case PIX_FMT_YUVJ444P
:
2151 *format
= PIX_FMT_YUV444P
;
2153 case PIX_FMT_YUVJ440P
:
2154 *format
= PIX_FMT_YUV440P
;
2161 SwsContext
*sws_getContext(int srcW
, int srcH
, enum PixelFormat srcFormat
, int dstW
, int dstH
, enum PixelFormat dstFormat
, int flags
,
2162 SwsFilter
*srcFilter
, SwsFilter
*dstFilter
, double *param
){
2166 int usesVFilter
, usesHFilter
;
2167 int unscaled
, needsDither
;
2168 int srcRange
, dstRange
;
2169 SwsFilter dummyFilter
= {NULL
, NULL
, NULL
, NULL
};
2170 #if defined(ARCH_X86)
2171 if (flags
& SWS_CPU_CAPS_MMX
)
2172 __asm__
volatile("emms\n\t"::: "memory");
2175 #if !defined(RUNTIME_CPUDETECT) || !defined (CONFIG_GPL) //ensure that the flags match the compiled variant if cpudetect is off
2176 flags
&= ~(SWS_CPU_CAPS_MMX
|SWS_CPU_CAPS_MMX2
|SWS_CPU_CAPS_3DNOW
|SWS_CPU_CAPS_ALTIVEC
|SWS_CPU_CAPS_BFIN
);
2178 flags
|= SWS_CPU_CAPS_MMX
|SWS_CPU_CAPS_MMX2
;
2179 #elif defined (HAVE_3DNOW)
2180 flags
|= SWS_CPU_CAPS_MMX
|SWS_CPU_CAPS_3DNOW
;
2181 #elif defined (HAVE_MMX)
2182 flags
|= SWS_CPU_CAPS_MMX
;
2183 #elif defined (HAVE_ALTIVEC)
2184 flags
|= SWS_CPU_CAPS_ALTIVEC
;
2185 #elif defined (ARCH_BFIN)
2186 flags
|= SWS_CPU_CAPS_BFIN
;
2188 #endif /* RUNTIME_CPUDETECT */
2189 if (clip_table
[512] != 255) globalInit();
2190 if (!rgb15to16
) sws_rgb2rgb_init(flags
);
2192 unscaled
= (srcW
== dstW
&& srcH
== dstH
);
2193 needsDither
= (isBGR(dstFormat
) || isRGB(dstFormat
))
2194 && (fmt_depth(dstFormat
))<24
2195 && ((fmt_depth(dstFormat
))<(fmt_depth(srcFormat
)) || (!(isRGB(srcFormat
) || isBGR(srcFormat
))));
2197 srcRange
= handle_jpeg(&srcFormat
);
2198 dstRange
= handle_jpeg(&dstFormat
);
2200 if (!isSupportedIn(srcFormat
))
2202 av_log(NULL
, AV_LOG_ERROR
, "swScaler: %s is not supported as input pixel format\n", sws_format_name(srcFormat
));
2205 if (!isSupportedOut(dstFormat
))
2207 av_log(NULL
, AV_LOG_ERROR
, "swScaler: %s is not supported as output pixel format\n", sws_format_name(dstFormat
));
2211 i
= flags
& ( SWS_POINT
2222 if(!i
|| (i
& (i
-1)))
2224 av_log(NULL
, AV_LOG_ERROR
, "swScaler: Exactly one scaler algorithm must be choosen\n");
2229 if (srcW
<4 || srcH
<1 || dstW
<8 || dstH
<1) //FIXME check if these are enough and try to lowwer them after fixing the relevant parts of the code
2231 av_log(NULL
, AV_LOG_ERROR
, "swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",
2232 srcW
, srcH
, dstW
, dstH
);
2235 if(srcW
> VOFW
|| dstW
> VOFW
){
2236 av_log(NULL
, AV_LOG_ERROR
, "swScaler: Compile time max width is "AV_STRINGIFY(VOFW
)" change VOF/VOFW and recompile\n");
2240 if (!dstFilter
) dstFilter
= &dummyFilter
;
2241 if (!srcFilter
) srcFilter
= &dummyFilter
;
2243 c
= av_mallocz(sizeof(SwsContext
));
2245 c
->av_class
= &sws_context_class
;
2250 c
->lumXInc
= ((srcW
<<16) + (dstW
>>1))/dstW
;
2251 c
->lumYInc
= ((srcH
<<16) + (dstH
>>1))/dstH
;
2253 c
->dstFormat
= dstFormat
;
2254 c
->srcFormat
= srcFormat
;
2255 c
->vRounder
= 4* 0x0001000100010001ULL
;
2257 usesHFilter
= usesVFilter
= 0;
2258 if (dstFilter
->lumV
&& dstFilter
->lumV
->length
>1) usesVFilter
=1;
2259 if (dstFilter
->lumH
&& dstFilter
->lumH
->length
>1) usesHFilter
=1;
2260 if (dstFilter
->chrV
&& dstFilter
->chrV
->length
>1) usesVFilter
=1;
2261 if (dstFilter
->chrH
&& dstFilter
->chrH
->length
>1) usesHFilter
=1;
2262 if (srcFilter
->lumV
&& srcFilter
->lumV
->length
>1) usesVFilter
=1;
2263 if (srcFilter
->lumH
&& srcFilter
->lumH
->length
>1) usesHFilter
=1;
2264 if (srcFilter
->chrV
&& srcFilter
->chrV
->length
>1) usesVFilter
=1;
2265 if (srcFilter
->chrH
&& srcFilter
->chrH
->length
>1) usesHFilter
=1;
2267 getSubSampleFactors(&c
->chrSrcHSubSample
, &c
->chrSrcVSubSample
, srcFormat
);
2268 getSubSampleFactors(&c
->chrDstHSubSample
, &c
->chrDstVSubSample
, dstFormat
);
2270 // reuse chroma for 2 pixles rgb/bgr unless user wants full chroma interpolation
2271 if ((isBGR(dstFormat
) || isRGB(dstFormat
)) && !(flags
&SWS_FULL_CHR_H_INT
)) c
->chrDstHSubSample
=1;
2273 // drop some chroma lines if the user wants it
2274 c
->vChrDrop
= (flags
&SWS_SRC_V_CHR_DROP_MASK
)>>SWS_SRC_V_CHR_DROP_SHIFT
;
2275 c
->chrSrcVSubSample
+= c
->vChrDrop
;
2277 // drop every 2. pixel for chroma calculation unless user wants full chroma
2278 if ((isBGR(srcFormat
) || isRGB(srcFormat
)) && !(flags
&SWS_FULL_CHR_H_INP
)
2279 && srcFormat
!=PIX_FMT_RGB8
&& srcFormat
!=PIX_FMT_BGR8
2280 && srcFormat
!=PIX_FMT_RGB4
&& srcFormat
!=PIX_FMT_BGR4
2281 && srcFormat
!=PIX_FMT_RGB4_BYTE
&& srcFormat
!=PIX_FMT_BGR4_BYTE
2282 && ((dstW
>>c
->chrDstHSubSample
) <= (srcW
>>1) || (flags
&(SWS_FAST_BILINEAR
|SWS_POINT
))))
2283 c
->chrSrcHSubSample
=1;
2286 c
->param
[0] = param
[0];
2287 c
->param
[1] = param
[1];
2290 c
->param
[1] = SWS_PARAM_DEFAULT
;
2293 c
->chrIntHSubSample
= c
->chrDstHSubSample
;
2294 c
->chrIntVSubSample
= c
->chrSrcVSubSample
;
2296 // Note the -((-x)>>y) is so that we always round toward +inf.
2297 c
->chrSrcW
= -((-srcW
) >> c
->chrSrcHSubSample
);
2298 c
->chrSrcH
= -((-srcH
) >> c
->chrSrcVSubSample
);
2299 c
->chrDstW
= -((-dstW
) >> c
->chrDstHSubSample
);
2300 c
->chrDstH
= -((-dstH
) >> c
->chrDstVSubSample
);
2302 sws_setColorspaceDetails(c
, Inverse_Table_6_9
[SWS_CS_DEFAULT
], srcRange
, Inverse_Table_6_9
[SWS_CS_DEFAULT
] /* FIXME*/, dstRange
, 0, 1<<16, 1<<16);
2304 /* unscaled special Cases */
2305 if (unscaled
&& !usesHFilter
&& !usesVFilter
&& (srcRange
== dstRange
|| isBGR(dstFormat
) || isRGB(dstFormat
)))
2308 if (srcFormat
== PIX_FMT_YUV420P
&& (dstFormat
== PIX_FMT_NV12
|| dstFormat
== PIX_FMT_NV21
))
2310 c
->swScale
= PlanarToNV12Wrapper
;
2314 if ((srcFormat
==PIX_FMT_YUV420P
|| srcFormat
==PIX_FMT_YUV422P
) && (isBGR(dstFormat
) || isRGB(dstFormat
))
2315 && !(flags
& SWS_ACCURATE_RND
))
2317 c
->swScale
= yuv2rgb_get_func_ptr(c
);
2321 if (srcFormat
==PIX_FMT_YUV410P
&& dstFormat
==PIX_FMT_YUV420P
&& !(flags
& SWS_BITEXACT
))
2323 c
->swScale
= yvu9toyv12Wrapper
;
2327 if (srcFormat
==PIX_FMT_BGR24
&& dstFormat
==PIX_FMT_YUV420P
&& !(flags
& SWS_ACCURATE_RND
))
2328 c
->swScale
= bgr24toyv12Wrapper
;
2330 /* rgb/bgr -> rgb/bgr (no dither needed forms) */
2331 if ( (isBGR(srcFormat
) || isRGB(srcFormat
))
2332 && (isBGR(dstFormat
) || isRGB(dstFormat
))
2333 && srcFormat
!= PIX_FMT_BGR8
&& dstFormat
!= PIX_FMT_BGR8
2334 && srcFormat
!= PIX_FMT_RGB8
&& dstFormat
!= PIX_FMT_RGB8
2335 && srcFormat
!= PIX_FMT_BGR4
&& dstFormat
!= PIX_FMT_BGR4
2336 && srcFormat
!= PIX_FMT_RGB4
&& dstFormat
!= PIX_FMT_RGB4
2337 && srcFormat
!= PIX_FMT_BGR4_BYTE
&& dstFormat
!= PIX_FMT_BGR4_BYTE
2338 && srcFormat
!= PIX_FMT_RGB4_BYTE
&& dstFormat
!= PIX_FMT_RGB4_BYTE
2339 && srcFormat
!= PIX_FMT_MONOBLACK
&& dstFormat
!= PIX_FMT_MONOBLACK
2340 && srcFormat
!= PIX_FMT_MONOWHITE
&& dstFormat
!= PIX_FMT_MONOWHITE
2341 && dstFormat
!= PIX_FMT_RGB32_1
2342 && dstFormat
!= PIX_FMT_BGR32_1
2343 && (!needsDither
|| (c
->flags
&(SWS_FAST_BILINEAR
|SWS_POINT
))))
2344 c
->swScale
= rgb2rgbWrapper
;
2346 if ((usePal(srcFormat
) && (
2347 dstFormat
== PIX_FMT_RGB32
||
2348 dstFormat
== PIX_FMT_RGB32_1
||
2349 dstFormat
== PIX_FMT_RGB24
||
2350 dstFormat
== PIX_FMT_BGR32
||
2351 dstFormat
== PIX_FMT_BGR32_1
||
2352 dstFormat
== PIX_FMT_BGR24
)))
2353 c
->swScale
= pal2rgbWrapper
;
2355 if (srcFormat
== PIX_FMT_YUV422P
)
2357 if (dstFormat
== PIX_FMT_YUYV422
)
2358 c
->swScale
= YUV422PToYuy2Wrapper
;
2359 else if (dstFormat
== PIX_FMT_UYVY422
)
2360 c
->swScale
= YUV422PToUyvyWrapper
;
2363 /* LQ converters if -sws 0 or -sws 4*/
2364 if (c
->flags
&(SWS_FAST_BILINEAR
|SWS_POINT
)){
2366 if (srcFormat
== PIX_FMT_YUV420P
)
2368 if (dstFormat
== PIX_FMT_YUYV422
)
2369 c
->swScale
= PlanarToYuy2Wrapper
;
2370 else if (dstFormat
== PIX_FMT_UYVY422
)
2371 c
->swScale
= PlanarToUyvyWrapper
;
2375 #ifdef COMPILE_ALTIVEC
2376 if ((c
->flags
& SWS_CPU_CAPS_ALTIVEC
) &&
2377 srcFormat
== PIX_FMT_YUV420P
) {
2378 // unscaled YV12 -> packed YUV, we want speed
2379 if (dstFormat
== PIX_FMT_YUYV422
)
2380 c
->swScale
= yv12toyuy2_unscaled_altivec
;
2381 else if (dstFormat
== PIX_FMT_UYVY422
)
2382 c
->swScale
= yv12touyvy_unscaled_altivec
;
2387 if ( srcFormat
== dstFormat
2388 || (isPlanarYUV(srcFormat
) && isGray(dstFormat
))
2389 || (isPlanarYUV(dstFormat
) && isGray(srcFormat
)))
2391 if (isPacked(c
->srcFormat
))
2392 c
->swScale
= packedCopy
;
2393 else /* Planar YUV or gray */
2394 c
->swScale
= planarCopy
;
2397 /* gray16{le,be} conversions */
2398 if (isGray16(srcFormat
) && (isPlanarYUV(dstFormat
) || (dstFormat
== PIX_FMT_GRAY8
)))
2400 c
->swScale
= gray16togray
;
2402 if ((isPlanarYUV(srcFormat
) || (srcFormat
== PIX_FMT_GRAY8
)) && isGray16(dstFormat
))
2404 c
->swScale
= graytogray16
;
2406 if (srcFormat
!= dstFormat
&& isGray16(srcFormat
) && isGray16(dstFormat
))
2408 c
->swScale
= gray16swap
;
2412 if (flags
& SWS_CPU_CAPS_BFIN
)
2413 ff_bfin_get_unscaled_swscale (c
);
2417 if (flags
&SWS_PRINT_INFO
)
2418 av_log(c
, AV_LOG_INFO
, "using unscaled %s -> %s special converter\n",
2419 sws_format_name(srcFormat
), sws_format_name(dstFormat
));
2424 if (flags
& SWS_CPU_CAPS_MMX2
)
2426 c
->canMMX2BeUsed
= (dstW
>=srcW
&& (dstW
&31)==0 && (srcW
&15)==0) ? 1 : 0;
2427 if (!c
->canMMX2BeUsed
&& dstW
>=srcW
&& (srcW
&15)==0 && (flags
&SWS_FAST_BILINEAR
))
2429 if (flags
&SWS_PRINT_INFO
)
2430 av_log(c
, AV_LOG_INFO
, "output Width is not a multiple of 32 -> no MMX2 scaler\n");
2432 if (usesHFilter
) c
->canMMX2BeUsed
=0;
2437 c
->chrXInc
= ((c
->chrSrcW
<<16) + (c
->chrDstW
>>1))/c
->chrDstW
;
2438 c
->chrYInc
= ((c
->chrSrcH
<<16) + (c
->chrDstH
>>1))/c
->chrDstH
;
2440 // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst
2441 // but only for the FAST_BILINEAR mode otherwise do correct scaling
2442 // n-2 is the last chrominance sample available
2443 // this is not perfect, but no one should notice the difference, the more correct variant
2444 // would be like the vertical one, but that would require some special code for the
2445 // first and last pixel
2446 if (flags
&SWS_FAST_BILINEAR
)
2448 if (c
->canMMX2BeUsed
)
2453 //we don't use the x86asm scaler if mmx is available
2454 else if (flags
& SWS_CPU_CAPS_MMX
)
2456 c
->lumXInc
= ((srcW
-2)<<16)/(dstW
-2) - 20;
2457 c
->chrXInc
= ((c
->chrSrcW
-2)<<16)/(c
->chrDstW
-2) - 20;
2461 /* precalculate horizontal scaler filter coefficients */
2463 const int filterAlign
=
2464 (flags
& SWS_CPU_CAPS_MMX
) ? 4 :
2465 (flags
& SWS_CPU_CAPS_ALTIVEC
) ? 8 :
2468 initFilter(&c
->hLumFilter
, &c
->hLumFilterPos
, &c
->hLumFilterSize
, c
->lumXInc
,
2469 srcW
, dstW
, filterAlign
, 1<<14,
2470 (flags
&SWS_BICUBLIN
) ? (flags
|SWS_BICUBIC
) : flags
,
2471 srcFilter
->lumH
, dstFilter
->lumH
, c
->param
);
2472 initFilter(&c
->hChrFilter
, &c
->hChrFilterPos
, &c
->hChrFilterSize
, c
->chrXInc
,
2473 c
->chrSrcW
, c
->chrDstW
, filterAlign
, 1<<14,
2474 (flags
&SWS_BICUBLIN
) ? (flags
|SWS_BILINEAR
) : flags
,
2475 srcFilter
->chrH
, dstFilter
->chrH
, c
->param
);
2477 #define MAX_FUNNY_CODE_SIZE 10000
2478 #if defined(COMPILE_MMX2)
2479 // can't downscale !!!
2480 if (c
->canMMX2BeUsed
&& (flags
& SWS_FAST_BILINEAR
))
2482 #ifdef MAP_ANONYMOUS
2483 c
->funnyYCode
= (uint8_t*)mmap(NULL
, MAX_FUNNY_CODE_SIZE
, PROT_EXEC
| PROT_READ
| PROT_WRITE
, MAP_PRIVATE
| MAP_ANONYMOUS
, 0, 0);
2484 c
->funnyUVCode
= (uint8_t*)mmap(NULL
, MAX_FUNNY_CODE_SIZE
, PROT_EXEC
| PROT_READ
| PROT_WRITE
, MAP_PRIVATE
| MAP_ANONYMOUS
, 0, 0);
2486 c
->funnyYCode
= av_malloc(MAX_FUNNY_CODE_SIZE
);
2487 c
->funnyUVCode
= av_malloc(MAX_FUNNY_CODE_SIZE
);
2490 c
->lumMmx2Filter
= av_malloc((dstW
/8+8)*sizeof(int16_t));
2491 c
->chrMmx2Filter
= av_malloc((c
->chrDstW
/4+8)*sizeof(int16_t));
2492 c
->lumMmx2FilterPos
= av_malloc((dstW
/2/8+8)*sizeof(int32_t));
2493 c
->chrMmx2FilterPos
= av_malloc((c
->chrDstW
/2/4+8)*sizeof(int32_t));
2495 initMMX2HScaler( dstW
, c
->lumXInc
, c
->funnyYCode
, c
->lumMmx2Filter
, c
->lumMmx2FilterPos
, 8);
2496 initMMX2HScaler(c
->chrDstW
, c
->chrXInc
, c
->funnyUVCode
, c
->chrMmx2Filter
, c
->chrMmx2FilterPos
, 4);
2498 #endif /* defined(COMPILE_MMX2) */
2499 } // Init Horizontal stuff
2503 /* precalculate vertical scaler filter coefficients */
2505 const int filterAlign
=
2506 (flags
& SWS_CPU_CAPS_MMX
) && (flags
& SWS_ACCURATE_RND
) ? 2 :
2507 (flags
& SWS_CPU_CAPS_ALTIVEC
) ? 8 :
2510 initFilter(&c
->vLumFilter
, &c
->vLumFilterPos
, &c
->vLumFilterSize
, c
->lumYInc
,
2511 srcH
, dstH
, filterAlign
, (1<<12),
2512 (flags
&SWS_BICUBLIN
) ? (flags
|SWS_BICUBIC
) : flags
,
2513 srcFilter
->lumV
, dstFilter
->lumV
, c
->param
);
2514 initFilter(&c
->vChrFilter
, &c
->vChrFilterPos
, &c
->vChrFilterSize
, c
->chrYInc
,
2515 c
->chrSrcH
, c
->chrDstH
, filterAlign
, (1<<12),
2516 (flags
&SWS_BICUBLIN
) ? (flags
|SWS_BILINEAR
) : flags
,
2517 srcFilter
->chrV
, dstFilter
->chrV
, c
->param
);
2520 c
->vYCoeffsBank
= av_malloc(sizeof (vector
signed short)*c
->vLumFilterSize
*c
->dstH
);
2521 c
->vCCoeffsBank
= av_malloc(sizeof (vector
signed short)*c
->vChrFilterSize
*c
->chrDstH
);
2523 for (i
=0;i
<c
->vLumFilterSize
*c
->dstH
;i
++) {
2525 short *p
= (short *)&c
->vYCoeffsBank
[i
];
2527 p
[j
] = c
->vLumFilter
[i
];
2530 for (i
=0;i
<c
->vChrFilterSize
*c
->chrDstH
;i
++) {
2532 short *p
= (short *)&c
->vCCoeffsBank
[i
];
2534 p
[j
] = c
->vChrFilter
[i
];
2539 // Calculate Buffer Sizes so that they won't run out while handling these damn slices
2540 c
->vLumBufSize
= c
->vLumFilterSize
;
2541 c
->vChrBufSize
= c
->vChrFilterSize
;
2542 for (i
=0; i
<dstH
; i
++)
2544 int chrI
= i
*c
->chrDstH
/ dstH
;
2545 int nextSlice
= FFMAX(c
->vLumFilterPos
[i
] + c
->vLumFilterSize
- 1,
2546 ((c
->vChrFilterPos
[chrI
] + c
->vChrFilterSize
- 1)<<c
->chrSrcVSubSample
));
2548 nextSlice
>>= c
->chrSrcVSubSample
;
2549 nextSlice
<<= c
->chrSrcVSubSample
;
2550 if (c
->vLumFilterPos
[i
] + c
->vLumBufSize
< nextSlice
)
2551 c
->vLumBufSize
= nextSlice
- c
->vLumFilterPos
[i
];
2552 if (c
->vChrFilterPos
[chrI
] + c
->vChrBufSize
< (nextSlice
>>c
->chrSrcVSubSample
))
2553 c
->vChrBufSize
= (nextSlice
>>c
->chrSrcVSubSample
) - c
->vChrFilterPos
[chrI
];
2556 // allocate pixbufs (we use dynamic allocation because otherwise we would need to
2557 c
->lumPixBuf
= av_malloc(c
->vLumBufSize
*2*sizeof(int16_t*));
2558 c
->chrPixBuf
= av_malloc(c
->vChrBufSize
*2*sizeof(int16_t*));
2559 //Note we need at least one pixel more at the end because of the mmx code (just in case someone wanna replace the 4000/8000)
2560 /* align at 16 bytes for AltiVec */
2561 for (i
=0; i
<c
->vLumBufSize
; i
++)
2562 c
->lumPixBuf
[i
]= c
->lumPixBuf
[i
+c
->vLumBufSize
]= av_mallocz(VOF
+1);
2563 for (i
=0; i
<c
->vChrBufSize
; i
++)
2564 c
->chrPixBuf
[i
]= c
->chrPixBuf
[i
+c
->vChrBufSize
]= av_malloc((VOF
+1)*2);
2566 //try to avoid drawing green stuff between the right end and the stride end
2567 for (i
=0; i
<c
->vChrBufSize
; i
++) memset(c
->chrPixBuf
[i
], 64, (VOF
+1)*2);
2569 assert(2*VOFW
== VOF
);
2571 assert(c
->chrDstH
<= dstH
);
2573 if (flags
&SWS_PRINT_INFO
)
2576 const char *dither
= " dithered";
2578 const char *dither
= "";
2580 if (flags
&SWS_FAST_BILINEAR
)
2581 av_log(c
, AV_LOG_INFO
, "FAST_BILINEAR scaler, ");
2582 else if (flags
&SWS_BILINEAR
)
2583 av_log(c
, AV_LOG_INFO
, "BILINEAR scaler, ");
2584 else if (flags
&SWS_BICUBIC
)
2585 av_log(c
, AV_LOG_INFO
, "BICUBIC scaler, ");
2586 else if (flags
&SWS_X
)
2587 av_log(c
, AV_LOG_INFO
, "Experimental scaler, ");
2588 else if (flags
&SWS_POINT
)
2589 av_log(c
, AV_LOG_INFO
, "Nearest Neighbor / POINT scaler, ");
2590 else if (flags
&SWS_AREA
)
2591 av_log(c
, AV_LOG_INFO
, "Area Averageing scaler, ");
2592 else if (flags
&SWS_BICUBLIN
)
2593 av_log(c
, AV_LOG_INFO
, "luma BICUBIC / chroma BILINEAR scaler, ");
2594 else if (flags
&SWS_GAUSS
)
2595 av_log(c
, AV_LOG_INFO
, "Gaussian scaler, ");
2596 else if (flags
&SWS_SINC
)
2597 av_log(c
, AV_LOG_INFO
, "Sinc scaler, ");
2598 else if (flags
&SWS_LANCZOS
)
2599 av_log(c
, AV_LOG_INFO
, "Lanczos scaler, ");
2600 else if (flags
&SWS_SPLINE
)
2601 av_log(c
, AV_LOG_INFO
, "Bicubic spline scaler, ");
2603 av_log(c
, AV_LOG_INFO
, "ehh flags invalid?! ");
2605 if (dstFormat
==PIX_FMT_BGR555
|| dstFormat
==PIX_FMT_BGR565
)
2606 av_log(c
, AV_LOG_INFO
, "from %s to%s %s ",
2607 sws_format_name(srcFormat
), dither
, sws_format_name(dstFormat
));
2609 av_log(c
, AV_LOG_INFO
, "from %s to %s ",
2610 sws_format_name(srcFormat
), sws_format_name(dstFormat
));
2612 if (flags
& SWS_CPU_CAPS_MMX2
)
2613 av_log(c
, AV_LOG_INFO
, "using MMX2\n");
2614 else if (flags
& SWS_CPU_CAPS_3DNOW
)
2615 av_log(c
, AV_LOG_INFO
, "using 3DNOW\n");
2616 else if (flags
& SWS_CPU_CAPS_MMX
)
2617 av_log(c
, AV_LOG_INFO
, "using MMX\n");
2618 else if (flags
& SWS_CPU_CAPS_ALTIVEC
)
2619 av_log(c
, AV_LOG_INFO
, "using AltiVec\n");
2621 av_log(c
, AV_LOG_INFO
, "using C\n");
2624 if (flags
& SWS_PRINT_INFO
)
2626 if (flags
& SWS_CPU_CAPS_MMX
)
2628 if (c
->canMMX2BeUsed
&& (flags
&SWS_FAST_BILINEAR
))
2629 av_log(c
, AV_LOG_VERBOSE
, "using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");
2632 if (c
->hLumFilterSize
==4)
2633 av_log(c
, AV_LOG_VERBOSE
, "using 4-tap MMX scaler for horizontal luminance scaling\n");
2634 else if (c
->hLumFilterSize
==8)
2635 av_log(c
, AV_LOG_VERBOSE
, "using 8-tap MMX scaler for horizontal luminance scaling\n");
2637 av_log(c
, AV_LOG_VERBOSE
, "using n-tap MMX scaler for horizontal luminance scaling\n");
2639 if (c
->hChrFilterSize
==4)
2640 av_log(c
, AV_LOG_VERBOSE
, "using 4-tap MMX scaler for horizontal chrominance scaling\n");
2641 else if (c
->hChrFilterSize
==8)
2642 av_log(c
, AV_LOG_VERBOSE
, "using 8-tap MMX scaler for horizontal chrominance scaling\n");
2644 av_log(c
, AV_LOG_VERBOSE
, "using n-tap MMX scaler for horizontal chrominance scaling\n");
2649 #if defined(ARCH_X86)
2650 av_log(c
, AV_LOG_VERBOSE
, "using X86-Asm scaler for horizontal scaling\n");
2652 if (flags
& SWS_FAST_BILINEAR
)
2653 av_log(c
, AV_LOG_VERBOSE
, "using FAST_BILINEAR C scaler for horizontal scaling\n");
2655 av_log(c
, AV_LOG_VERBOSE
, "using C scaler for horizontal scaling\n");
2658 if (isPlanarYUV(dstFormat
))
2660 if (c
->vLumFilterSize
==1)
2661 av_log(c
, AV_LOG_VERBOSE
, "using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", (flags
& SWS_CPU_CAPS_MMX
) ? "MMX" : "C");
2663 av_log(c
, AV_LOG_VERBOSE
, "using n-tap %s scaler for vertical scaling (YV12 like)\n", (flags
& SWS_CPU_CAPS_MMX
) ? "MMX" : "C");
2667 if (c
->vLumFilterSize
==1 && c
->vChrFilterSize
==2)
2668 av_log(c
, AV_LOG_VERBOSE
, "using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"
2669 " 2-tap scaler for vertical chrominance scaling (BGR)\n", (flags
& SWS_CPU_CAPS_MMX
) ? "MMX" : "C");
2670 else if (c
->vLumFilterSize
==2 && c
->vChrFilterSize
==2)
2671 av_log(c
, AV_LOG_VERBOSE
, "using 2-tap linear %s scaler for vertical scaling (BGR)\n", (flags
& SWS_CPU_CAPS_MMX
) ? "MMX" : "C");
2673 av_log(c
, AV_LOG_VERBOSE
, "using n-tap %s scaler for vertical scaling (BGR)\n", (flags
& SWS_CPU_CAPS_MMX
) ? "MMX" : "C");
2676 if (dstFormat
==PIX_FMT_BGR24
)
2677 av_log(c
, AV_LOG_VERBOSE
, "using %s YV12->BGR24 Converter\n",
2678 (flags
& SWS_CPU_CAPS_MMX2
) ? "MMX2" : ((flags
& SWS_CPU_CAPS_MMX
) ? "MMX" : "C"));
2679 else if (dstFormat
==PIX_FMT_RGB32
)
2680 av_log(c
, AV_LOG_VERBOSE
, "using %s YV12->BGR32 Converter\n", (flags
& SWS_CPU_CAPS_MMX
) ? "MMX" : "C");
2681 else if (dstFormat
==PIX_FMT_BGR565
)
2682 av_log(c
, AV_LOG_VERBOSE
, "using %s YV12->BGR16 Converter\n", (flags
& SWS_CPU_CAPS_MMX
) ? "MMX" : "C");
2683 else if (dstFormat
==PIX_FMT_BGR555
)
2684 av_log(c
, AV_LOG_VERBOSE
, "using %s YV12->BGR15 Converter\n", (flags
& SWS_CPU_CAPS_MMX
) ? "MMX" : "C");
2686 av_log(c
, AV_LOG_VERBOSE
, "%dx%d -> %dx%d\n", srcW
, srcH
, dstW
, dstH
);
2688 if (flags
& SWS_PRINT_INFO
)
2690 av_log(c
, AV_LOG_DEBUG
, "Lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
2691 c
->srcW
, c
->srcH
, c
->dstW
, c
->dstH
, c
->lumXInc
, c
->lumYInc
);
2692 av_log(c
, AV_LOG_DEBUG
, "Chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
2693 c
->chrSrcW
, c
->chrSrcH
, c
->chrDstW
, c
->chrDstH
, c
->chrXInc
, c
->chrYInc
);
2696 c
->swScale
= getSwsFunc(flags
);
2701 * swscale wrapper, so we don't need to export the SwsContext.
2702 * assumes planar YUV to be in YUV order instead of YVU
2704 int sws_scale(SwsContext
*c
, uint8_t* src
[], int srcStride
[], int srcSliceY
,
2705 int srcSliceH
, uint8_t* dst
[], int dstStride
[]){
2707 uint8_t* src2
[4]= {src
[0], src
[1], src
[2]};
2709 if (c
->sliceDir
== 0 && srcSliceY
!= 0 && srcSliceY
+ srcSliceH
!= c
->srcH
) {
2710 av_log(c
, AV_LOG_ERROR
, "Slices start in the middle!\n");
2713 if (c
->sliceDir
== 0) {
2714 if (srcSliceY
== 0) c
->sliceDir
= 1; else c
->sliceDir
= -1;
2717 if (usePal(c
->srcFormat
)){
2718 for (i
=0; i
<256; i
++){
2719 int p
, r
, g
, b
,y
,u
,v
;
2720 if(c
->srcFormat
== PIX_FMT_PAL8
){
2721 p
=((uint32_t*)(src
[1]))[i
];
2725 }else if(c
->srcFormat
== PIX_FMT_RGB8
){
2729 }else if(c
->srcFormat
== PIX_FMT_BGR8
){
2733 }else if(c
->srcFormat
== PIX_FMT_RGB4_BYTE
){
2737 }else if(c
->srcFormat
== PIX_FMT_BGR4_BYTE
){
2742 y
= av_clip_uint8((RY
*r
+ GY
*g
+ BY
*b
+ ( 33<<(RGB2YUV_SHIFT
-1)))>>RGB2YUV_SHIFT
);
2743 u
= av_clip_uint8((RU
*r
+ GU
*g
+ BU
*b
+ (257<<(RGB2YUV_SHIFT
-1)))>>RGB2YUV_SHIFT
);
2744 v
= av_clip_uint8((RV
*r
+ GV
*g
+ BV
*b
+ (257<<(RGB2YUV_SHIFT
-1)))>>RGB2YUV_SHIFT
);
2745 c
->pal_yuv
[i
]= y
+ (u
<<8) + (v
<<16);
2748 switch(c
->dstFormat
) {
2750 #ifndef WORDS_BIGENDIAN
2753 c
->pal_rgb
[i
]= r
+ (g
<<8) + (b
<<16);
2755 case PIX_FMT_BGR32_1
:
2756 #ifdef WORDS_BIGENDIAN
2759 c
->pal_rgb
[i
]= (r
+ (g
<<8) + (b
<<16)) << 8;
2761 case PIX_FMT_RGB32_1
:
2762 #ifdef WORDS_BIGENDIAN
2765 c
->pal_rgb
[i
]= (b
+ (g
<<8) + (r
<<16)) << 8;
2768 #ifndef WORDS_BIGENDIAN
2772 c
->pal_rgb
[i
]= b
+ (g
<<8) + (r
<<16);
2777 // copy strides, so they can safely be modified
2778 if (c
->sliceDir
== 1) {
2779 // slices go from top to bottom
2780 int srcStride2
[4]= {srcStride
[0], srcStride
[1], srcStride
[2]};
2781 int dstStride2
[4]= {dstStride
[0], dstStride
[1], dstStride
[2]};
2782 return c
->swScale(c
, src2
, srcStride2
, srcSliceY
, srcSliceH
, dst
, dstStride2
);
2784 // slices go from bottom to top => we flip the image internally
2785 uint8_t* dst2
[4]= {dst
[0] + (c
->dstH
-1)*dstStride
[0],
2786 dst
[1] + ((c
->dstH
>>c
->chrDstVSubSample
)-1)*dstStride
[1],
2787 dst
[2] + ((c
->dstH
>>c
->chrDstVSubSample
)-1)*dstStride
[2]};
2788 int srcStride2
[4]= {-srcStride
[0], -srcStride
[1], -srcStride
[2]};
2789 int dstStride2
[4]= {-dstStride
[0], -dstStride
[1], -dstStride
[2]};
2791 src2
[0] += (srcSliceH
-1)*srcStride
[0];
2792 if (!usePal(c
->srcFormat
))
2793 src2
[1] += ((srcSliceH
>>c
->chrSrcVSubSample
)-1)*srcStride
[1];
2794 src2
[2] += ((srcSliceH
>>c
->chrSrcVSubSample
)-1)*srcStride
[2];
2796 return c
->swScale(c
, src2
, srcStride2
, c
->srcH
-srcSliceY
-srcSliceH
, srcSliceH
, dst2
, dstStride2
);
2801 * swscale wrapper, so we don't need to export the SwsContext
2803 int sws_scale_ordered(SwsContext
*c
, uint8_t* src
[], int srcStride
[], int srcSliceY
,
2804 int srcSliceH
, uint8_t* dst
[], int dstStride
[]){
2805 return sws_scale(c
, src
, srcStride
, srcSliceY
, srcSliceH
, dst
, dstStride
);
2808 SwsFilter
*sws_getDefaultFilter(float lumaGBlur
, float chromaGBlur
,
2809 float lumaSharpen
, float chromaSharpen
,
2810 float chromaHShift
, float chromaVShift
,
2813 SwsFilter
*filter
= av_malloc(sizeof(SwsFilter
));
2815 if (lumaGBlur
!=0.0){
2816 filter
->lumH
= sws_getGaussianVec(lumaGBlur
, 3.0);
2817 filter
->lumV
= sws_getGaussianVec(lumaGBlur
, 3.0);
2819 filter
->lumH
= sws_getIdentityVec();
2820 filter
->lumV
= sws_getIdentityVec();
2823 if (chromaGBlur
!=0.0){
2824 filter
->chrH
= sws_getGaussianVec(chromaGBlur
, 3.0);
2825 filter
->chrV
= sws_getGaussianVec(chromaGBlur
, 3.0);
2827 filter
->chrH
= sws_getIdentityVec();
2828 filter
->chrV
= sws_getIdentityVec();
2831 if (chromaSharpen
!=0.0){
2832 SwsVector
*id
= sws_getIdentityVec();
2833 sws_scaleVec(filter
->chrH
, -chromaSharpen
);
2834 sws_scaleVec(filter
->chrV
, -chromaSharpen
);
2835 sws_addVec(filter
->chrH
, id
);
2836 sws_addVec(filter
->chrV
, id
);
2840 if (lumaSharpen
!=0.0){
2841 SwsVector
*id
= sws_getIdentityVec();
2842 sws_scaleVec(filter
->lumH
, -lumaSharpen
);
2843 sws_scaleVec(filter
->lumV
, -lumaSharpen
);
2844 sws_addVec(filter
->lumH
, id
);
2845 sws_addVec(filter
->lumV
, id
);
2849 if (chromaHShift
!= 0.0)
2850 sws_shiftVec(filter
->chrH
, (int)(chromaHShift
+0.5));
2852 if (chromaVShift
!= 0.0)
2853 sws_shiftVec(filter
->chrV
, (int)(chromaVShift
+0.5));
2855 sws_normalizeVec(filter
->chrH
, 1.0);
2856 sws_normalizeVec(filter
->chrV
, 1.0);
2857 sws_normalizeVec(filter
->lumH
, 1.0);
2858 sws_normalizeVec(filter
->lumV
, 1.0);
2860 if (verbose
) sws_printVec(filter
->chrH
);
2861 if (verbose
) sws_printVec(filter
->lumH
);
2867 * returns a normalized gaussian curve used to filter stuff
2868 * quality=3 is high quality, lowwer is lowwer quality
2870 SwsVector
*sws_getGaussianVec(double variance
, double quality
){
2871 const int length
= (int)(variance
*quality
+ 0.5) | 1;
2873 double *coeff
= av_malloc(length
*sizeof(double));
2874 double middle
= (length
-1)*0.5;
2875 SwsVector
*vec
= av_malloc(sizeof(SwsVector
));
2878 vec
->length
= length
;
2880 for (i
=0; i
<length
; i
++)
2882 double dist
= i
-middle
;
2883 coeff
[i
]= exp(-dist
*dist
/(2*variance
*variance
)) / sqrt(2*variance
*PI
);
2886 sws_normalizeVec(vec
, 1.0);
2891 SwsVector
*sws_getConstVec(double c
, int length
){
2893 double *coeff
= av_malloc(length
*sizeof(double));
2894 SwsVector
*vec
= av_malloc(sizeof(SwsVector
));
2897 vec
->length
= length
;
2899 for (i
=0; i
<length
; i
++)
2906 SwsVector
*sws_getIdentityVec(void){
2907 return sws_getConstVec(1.0, 1);
2910 double sws_dcVec(SwsVector
*a
){
2914 for (i
=0; i
<a
->length
; i
++)
2920 void sws_scaleVec(SwsVector
*a
, double scalar
){
2923 for (i
=0; i
<a
->length
; i
++)
2924 a
->coeff
[i
]*= scalar
;
2927 void sws_normalizeVec(SwsVector
*a
, double height
){
2928 sws_scaleVec(a
, height
/sws_dcVec(a
));
2931 static SwsVector
*sws_getConvVec(SwsVector
*a
, SwsVector
*b
){
2932 int length
= a
->length
+ b
->length
- 1;
2933 double *coeff
= av_malloc(length
*sizeof(double));
2935 SwsVector
*vec
= av_malloc(sizeof(SwsVector
));
2938 vec
->length
= length
;
2940 for (i
=0; i
<length
; i
++) coeff
[i
]= 0.0;
2942 for (i
=0; i
<a
->length
; i
++)
2944 for (j
=0; j
<b
->length
; j
++)
2946 coeff
[i
+j
]+= a
->coeff
[i
]*b
->coeff
[j
];
2953 static SwsVector
*sws_sumVec(SwsVector
*a
, SwsVector
*b
){
2954 int length
= FFMAX(a
->length
, b
->length
);
2955 double *coeff
= av_malloc(length
*sizeof(double));
2957 SwsVector
*vec
= av_malloc(sizeof(SwsVector
));
2960 vec
->length
= length
;
2962 for (i
=0; i
<length
; i
++) coeff
[i
]= 0.0;
2964 for (i
=0; i
<a
->length
; i
++) coeff
[i
+ (length
-1)/2 - (a
->length
-1)/2]+= a
->coeff
[i
];
2965 for (i
=0; i
<b
->length
; i
++) coeff
[i
+ (length
-1)/2 - (b
->length
-1)/2]+= b
->coeff
[i
];
2970 static SwsVector
*sws_diffVec(SwsVector
*a
, SwsVector
*b
){
2971 int length
= FFMAX(a
->length
, b
->length
);
2972 double *coeff
= av_malloc(length
*sizeof(double));
2974 SwsVector
*vec
= av_malloc(sizeof(SwsVector
));
2977 vec
->length
= length
;
2979 for (i
=0; i
<length
; i
++) coeff
[i
]= 0.0;
2981 for (i
=0; i
<a
->length
; i
++) coeff
[i
+ (length
-1)/2 - (a
->length
-1)/2]+= a
->coeff
[i
];
2982 for (i
=0; i
<b
->length
; i
++) coeff
[i
+ (length
-1)/2 - (b
->length
-1)/2]-= b
->coeff
[i
];
2987 /* shift left / or right if "shift" is negative */
2988 static SwsVector
*sws_getShiftedVec(SwsVector
*a
, int shift
){
2989 int length
= a
->length
+ FFABS(shift
)*2;
2990 double *coeff
= av_malloc(length
*sizeof(double));
2992 SwsVector
*vec
= av_malloc(sizeof(SwsVector
));
2995 vec
->length
= length
;
2997 for (i
=0; i
<length
; i
++) coeff
[i
]= 0.0;
2999 for (i
=0; i
<a
->length
; i
++)
3001 coeff
[i
+ (length
-1)/2 - (a
->length
-1)/2 - shift
]= a
->coeff
[i
];
3007 void sws_shiftVec(SwsVector
*a
, int shift
){
3008 SwsVector
*shifted
= sws_getShiftedVec(a
, shift
);
3010 a
->coeff
= shifted
->coeff
;
3011 a
->length
= shifted
->length
;
3015 void sws_addVec(SwsVector
*a
, SwsVector
*b
){
3016 SwsVector
*sum
= sws_sumVec(a
, b
);
3018 a
->coeff
= sum
->coeff
;
3019 a
->length
= sum
->length
;
3023 void sws_subVec(SwsVector
*a
, SwsVector
*b
){
3024 SwsVector
*diff
= sws_diffVec(a
, b
);
3026 a
->coeff
= diff
->coeff
;
3027 a
->length
= diff
->length
;
3031 void sws_convVec(SwsVector
*a
, SwsVector
*b
){
3032 SwsVector
*conv
= sws_getConvVec(a
, b
);
3034 a
->coeff
= conv
->coeff
;
3035 a
->length
= conv
->length
;
3039 SwsVector
*sws_cloneVec(SwsVector
*a
){
3040 double *coeff
= av_malloc(a
->length
*sizeof(double));
3042 SwsVector
*vec
= av_malloc(sizeof(SwsVector
));
3045 vec
->length
= a
->length
;
3047 for (i
=0; i
<a
->length
; i
++) coeff
[i
]= a
->coeff
[i
];
3052 void sws_printVec(SwsVector
*a
){
3058 for (i
=0; i
<a
->length
; i
++)
3059 if (a
->coeff
[i
]>max
) max
= a
->coeff
[i
];
3061 for (i
=0; i
<a
->length
; i
++)
3062 if (a
->coeff
[i
]<min
) min
= a
->coeff
[i
];
3066 for (i
=0; i
<a
->length
; i
++)
3068 int x
= (int)((a
->coeff
[i
]-min
)*60.0/range
+0.5);
3069 av_log(NULL
, AV_LOG_DEBUG
, "%1.3f ", a
->coeff
[i
]);
3070 for (;x
>0; x
--) av_log(NULL
, AV_LOG_DEBUG
, " ");
3071 av_log(NULL
, AV_LOG_DEBUG
, "|\n");
3075 void sws_freeVec(SwsVector
*a
){
3077 av_freep(&a
->coeff
);
3082 void sws_freeFilter(SwsFilter
*filter
){
3083 if (!filter
) return;
3085 if (filter
->lumH
) sws_freeVec(filter
->lumH
);
3086 if (filter
->lumV
) sws_freeVec(filter
->lumV
);
3087 if (filter
->chrH
) sws_freeVec(filter
->chrH
);
3088 if (filter
->chrV
) sws_freeVec(filter
->chrV
);
3093 void sws_freeContext(SwsContext
*c
){
3099 for (i
=0; i
<c
->vLumBufSize
; i
++)
3100 av_freep(&c
->lumPixBuf
[i
]);
3101 av_freep(&c
->lumPixBuf
);
3106 for (i
=0; i
<c
->vChrBufSize
; i
++)
3107 av_freep(&c
->chrPixBuf
[i
]);
3108 av_freep(&c
->chrPixBuf
);
3111 av_freep(&c
->vLumFilter
);
3112 av_freep(&c
->vChrFilter
);
3113 av_freep(&c
->hLumFilter
);
3114 av_freep(&c
->hChrFilter
);
3116 av_freep(&c
->vYCoeffsBank
);
3117 av_freep(&c
->vCCoeffsBank
);
3120 av_freep(&c
->vLumFilterPos
);
3121 av_freep(&c
->vChrFilterPos
);
3122 av_freep(&c
->hLumFilterPos
);
3123 av_freep(&c
->hChrFilterPos
);
3125 #if defined(ARCH_X86) && defined(CONFIG_GPL)
3126 #ifdef MAP_ANONYMOUS
3127 if (c
->funnyYCode
) munmap(c
->funnyYCode
, MAX_FUNNY_CODE_SIZE
);
3128 if (c
->funnyUVCode
) munmap(c
->funnyUVCode
, MAX_FUNNY_CODE_SIZE
);
3130 av_free(c
->funnyYCode
);
3131 av_free(c
->funnyUVCode
);
3134 c
->funnyUVCode
=NULL
;
3135 #endif /* defined(ARCH_X86) */
3137 av_freep(&c
->lumMmx2Filter
);
3138 av_freep(&c
->chrMmx2Filter
);
3139 av_freep(&c
->lumMmx2FilterPos
);
3140 av_freep(&c
->chrMmx2FilterPos
);
3141 av_freep(&c
->yuvTable
);
3147 * Checks if context is valid or reallocs a new one instead.
3148 * If context is NULL, just calls sws_getContext() to get a new one.
3149 * Otherwise, checks if the parameters are the same already saved in context.
3150 * If that is the case, returns the current context.
3151 * Otherwise, frees context and gets a new one.
3153 * Be warned that srcFilter, dstFilter are not checked, they are
3154 * asumed to remain valid.
3156 struct SwsContext
*sws_getCachedContext(struct SwsContext
*context
,
3157 int srcW
, int srcH
, enum PixelFormat srcFormat
,
3158 int dstW
, int dstH
, enum PixelFormat dstFormat
, int flags
,
3159 SwsFilter
*srcFilter
, SwsFilter
*dstFilter
, double *param
)
3161 static const double default_param
[2] = {SWS_PARAM_DEFAULT
, SWS_PARAM_DEFAULT
};
3164 param
= default_param
;
3167 if (context
->srcW
!= srcW
|| context
->srcH
!= srcH
||
3168 context
->srcFormat
!= srcFormat
||
3169 context
->dstW
!= dstW
|| context
->dstH
!= dstH
||
3170 context
->dstFormat
!= dstFormat
|| context
->flags
!= flags
||
3171 context
->param
[0] != param
[0] || context
->param
[1] != param
[1])
3173 sws_freeContext(context
);
3178 return sws_getContext(srcW
, srcH
, srcFormat
,
3179 dstW
, dstH
, dstFormat
, flags
,
3180 srcFilter
, dstFilter
, param
);