passing an array or double precission parameters for the scaling function, instead...
[libav.git] / postproc / swscale.c
CommitLineData
fe8054c0 1/*
5427e242 2 Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
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3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
31190492 8
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9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
31190492 13
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14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17*/
783e9cc9 18
28bf81c9 19/*
7322a67c 20 supported Input formats: YV12, I420/IYUV, YUY2, UYVY, BGR32, BGR24, BGR16, BGR15, RGB32, RGB24, Y8/Y800, YVU9/IF09
caeaabe7 21 supported output formats: YV12, I420/IYUV, YUY2, UYVY, {BGR,RGB}{1,4,8,15,16,24,32}, Y8/Y800, YVU9/IF09
e09d12f4 22 {BGR,RGB}{1,4,8,15,16} support dithering
a861d4d7 23
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24 unscaled special converters (YV12=I420=IYUV, Y800=Y8)
25 YV12 -> {BGR,RGB}{1,4,8,15,16,24,32}
26 x -> x
27 YUV9 -> YV12
28 YUV9/YV12 -> Y800
29 Y800 -> YUV9/YV12
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30 BGR24 -> BGR32 & RGB24 -> RGB32
31 BGR32 -> BGR24 & RGB32 -> RGB24
4bb3fa5e 32 BGR15 -> BGR16
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33*/
34
35/*
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36tested special converters (most are tested actually but i didnt write it down ...)
37 YV12 -> BGR16
b935781b 38 YV12 -> YV12
4bb3fa5e 39 BGR15 -> BGR16
1e1c4fe9 40 BGR16 -> BGR16
e09d12f4 41 YVU9 -> YV12
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42
43untested special converters
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44 YV12/I420 -> BGR15/BGR24/BGR32 (its the yuv2rgb stuff, so it should be ok)
45 YV12/I420 -> YV12/I420
46 YUY2/BGR15/BGR24/BGR32/RGB24/RGB32 -> same format
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47 BGR24 -> BGR32 & RGB24 -> RGB32
48 BGR32 -> BGR24 & RGB32 -> RGB24
ec22603f 49 BGR24 -> YV12
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50*/
51
d3f41512 52#include <inttypes.h>
dda87e9f 53#include <string.h>
077ea8a7 54#include <math.h>
c1b0bfb4 55#include <stdio.h>
d3f41512 56#include "../config.h"
9b464428 57#include "../mangle.h"
81b7c056 58#include <assert.h>
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59#ifdef HAVE_MALLOC_H
60#include <malloc.h>
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61#else
62#include <stdlib.h>
c1b0bfb4 63#endif
d604bab9 64#include "swscale.h"
5427e242 65#include "swscale_internal.h"
7630f2e0 66#include "../cpudetect.h"
a861d4d7 67#include "../bswap.h"
28bf81c9 68#include "../libvo/img_format.h"
37079906 69#include "rgb2rgb.h"
b0db4198 70#include "../libvo/fastmemcpy.h"
0d9f3d85 71
541c4eb9 72#undef MOVNTQ
7d7f78b5 73#undef PAVGB
d3f41512 74
783e9cc9 75//#undef HAVE_MMX2
7f56a527 76//#define HAVE_3DNOW
d3f41512 77//#undef HAVE_MMX
783e9cc9 78//#undef ARCH_X86
2ba1bff0 79//#define WORDS_BIGENDIAN
d604bab9 80#define DITHER1XBPP
d3f41512 81
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82#define FAST_BGR2YV12 // use 7 bit coeffs instead of 15bit
83
1e621b18 84#define RET 0xC3 //near return opcode for X86
c1b0bfb4 85
28bf81c9 86#ifdef MP_DEBUG
81b7c056 87#define ASSERT(x) assert(x);
28bf81c9 88#else
c1b0bfb4 89#define ASSERT(x) ;
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90#endif
91
92#ifdef M_PI
93#define PI M_PI
94#else
95#define PI 3.14159265358979323846
96#endif
c1b0bfb4 97
6c7506de 98//FIXME replace this with something faster
fccb9b2b 99#define isPlanarYUV(x) ((x)==IMGFMT_YV12 || (x)==IMGFMT_YVU9 \
d80e2fa2 100 || (x)==IMGFMT_444P || (x)==IMGFMT_422P || (x)==IMGFMT_411P)
7322a67c 101#define isYUV(x) ((x)==IMGFMT_UYVY || (x)==IMGFMT_YUY2 || isPlanarYUV(x))
44c1035c 102#define isGray(x) ((x)==IMGFMT_Y800)
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103#define isRGB(x) (((x)&IMGFMT_RGB_MASK)==IMGFMT_RGB)
104#define isBGR(x) (((x)&IMGFMT_BGR_MASK)==IMGFMT_BGR)
fccb9b2b 105#define isSupportedIn(x) ((x)==IMGFMT_YV12 || (x)==IMGFMT_YUY2 || (x)==IMGFMT_UYVY\
b72034dd 106 || (x)==IMGFMT_BGR32|| (x)==IMGFMT_BGR24|| (x)==IMGFMT_BGR16|| (x)==IMGFMT_BGR15\
a861d4d7 107 || (x)==IMGFMT_RGB32|| (x)==IMGFMT_RGB24\
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108 || (x)==IMGFMT_Y800 || (x)==IMGFMT_YVU9\
109 || (x)==IMGFMT_444P || (x)==IMGFMT_422P || (x)==IMGFMT_411P)
caeaabe7 110#define isSupportedOut(x) ((x)==IMGFMT_YV12 || (x)==IMGFMT_YUY2 || (x)==IMGFMT_UYVY\
d80e2fa2 111 || (x)==IMGFMT_444P || (x)==IMGFMT_422P || (x)==IMGFMT_411P\
cf7d1c1a 112 || isRGB(x) || isBGR(x)\
e616aa93 113 || (x)==IMGFMT_Y800 || (x)==IMGFMT_YVU9)
7322a67c 114#define isPacked(x) ((x)==IMGFMT_YUY2 || (x)==IMGFMT_UYVY ||isRGB(x) || isBGR(x))
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115
116#define RGB2YUV_SHIFT 16
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117#define BY ((int)( 0.098*(1<<RGB2YUV_SHIFT)+0.5))
118#define BV ((int)(-0.071*(1<<RGB2YUV_SHIFT)+0.5))
119#define BU ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
120#define GY ((int)( 0.504*(1<<RGB2YUV_SHIFT)+0.5))
121#define GV ((int)(-0.368*(1<<RGB2YUV_SHIFT)+0.5))
122#define GU ((int)(-0.291*(1<<RGB2YUV_SHIFT)+0.5))
123#define RY ((int)( 0.257*(1<<RGB2YUV_SHIFT)+0.5))
124#define RV ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
125#define RU ((int)(-0.148*(1<<RGB2YUV_SHIFT)+0.5))
6c7506de 126
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127extern const int32_t Inverse_Table_6_9[8][4];
128
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129/*
130NOTES
d604bab9 131Special versions: fast Y 1:1 scaling (no interpolation in y direction)
31190492 132
783e9cc9 133TODO
d604bab9 134more intelligent missalignment avoidance for the horizontal scaler
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135write special vertical cubic upscale version
136Optimize C code (yv12 / minmax)
ff7ba856 137add support for packed pixel yuv input & output
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138add support for Y8 output
139optimize bgr24 & bgr32
ff7ba856 140add BGR4 output support
1e621b18 141write special BGR->BGR scaler
783e9cc9 142*/
31190492 143
d604bab9 144#define ABS(a) ((a) > 0 ? (a) : (-(a)))
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145#define MIN(a,b) ((a) > (b) ? (b) : (a))
146#define MAX(a,b) ((a) < (b) ? (b) : (a))
d604bab9 147
7630f2e0 148#ifdef ARCH_X86
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149static uint64_t attribute_used __attribute__((aligned(8))) bF8= 0xF8F8F8F8F8F8F8F8LL;
150static uint64_t attribute_used __attribute__((aligned(8))) bFC= 0xFCFCFCFCFCFCFCFCLL;
d604bab9 151static uint64_t __attribute__((aligned(8))) w10= 0x0010001000100010LL;
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152static uint64_t attribute_used __attribute__((aligned(8))) w02= 0x0002000200020002LL;
153static uint64_t attribute_used __attribute__((aligned(8))) bm00001111=0x00000000FFFFFFFFLL;
154static uint64_t attribute_used __attribute__((aligned(8))) bm00000111=0x0000000000FFFFFFLL;
155static uint64_t attribute_used __attribute__((aligned(8))) bm11111000=0xFFFFFFFFFF000000LL;
156static uint64_t attribute_used __attribute__((aligned(8))) bm01010101=0x00FF00FF00FF00FFLL;
d604bab9 157
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158static volatile uint64_t attribute_used __attribute__((aligned(8))) b5Dither;
159static volatile uint64_t attribute_used __attribute__((aligned(8))) g5Dither;
160static volatile uint64_t attribute_used __attribute__((aligned(8))) g6Dither;
161static volatile uint64_t attribute_used __attribute__((aligned(8))) r5Dither;
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162
163static uint64_t __attribute__((aligned(8))) dither4[2]={
164 0x0103010301030103LL,
165 0x0200020002000200LL,};
166
167static uint64_t __attribute__((aligned(8))) dither8[2]={
168 0x0602060206020602LL,
169 0x0004000400040004LL,};
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170
171static uint64_t __attribute__((aligned(8))) b16Mask= 0x001F001F001F001FLL;
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172static uint64_t attribute_used __attribute__((aligned(8))) g16Mask= 0x07E007E007E007E0LL;
173static uint64_t attribute_used __attribute__((aligned(8))) r16Mask= 0xF800F800F800F800LL;
d604bab9 174static uint64_t __attribute__((aligned(8))) b15Mask= 0x001F001F001F001FLL;
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175static uint64_t attribute_used __attribute__((aligned(8))) g15Mask= 0x03E003E003E003E0LL;
176static uint64_t attribute_used __attribute__((aligned(8))) r15Mask= 0x7C007C007C007C00LL;
d604bab9 177
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178static uint64_t attribute_used __attribute__((aligned(8))) M24A= 0x00FF0000FF0000FFLL;
179static uint64_t attribute_used __attribute__((aligned(8))) M24B= 0xFF0000FF0000FF00LL;
180static uint64_t attribute_used __attribute__((aligned(8))) M24C= 0x0000FF0000FF0000LL;
99d2cb72 181
ac6a2e45 182#ifdef FAST_BGR2YV12
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183static const uint64_t bgr2YCoeff attribute_used __attribute__((aligned(8))) = 0x000000210041000DULL;
184static const uint64_t bgr2UCoeff attribute_used __attribute__((aligned(8))) = 0x0000FFEEFFDC0038ULL;
185static const uint64_t bgr2VCoeff attribute_used __attribute__((aligned(8))) = 0x00000038FFD2FFF8ULL;
ac6a2e45 186#else
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187static const uint64_t bgr2YCoeff attribute_used __attribute__((aligned(8))) = 0x000020E540830C8BULL;
188static const uint64_t bgr2UCoeff attribute_used __attribute__((aligned(8))) = 0x0000ED0FDAC23831ULL;
189static const uint64_t bgr2VCoeff attribute_used __attribute__((aligned(8))) = 0x00003831D0E6F6EAULL;
ac6a2e45 190#endif
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191static const uint64_t bgr2YOffset attribute_used __attribute__((aligned(8))) = 0x1010101010101010ULL;
192static const uint64_t bgr2UVOffset attribute_used __attribute__((aligned(8)))= 0x8080808080808080ULL;
193static const uint64_t w1111 attribute_used __attribute__((aligned(8))) = 0x0001000100010001ULL;
d604bab9 194#endif
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195
196// clipping helper table for C implementations:
197static unsigned char clip_table[768];
198
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199static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b);
200
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201extern const uint8_t dither_2x2_4[2][8];
202extern const uint8_t dither_2x2_8[2][8];
203extern const uint8_t dither_8x8_32[8][8];
204extern const uint8_t dither_8x8_73[8][8];
205extern const uint8_t dither_8x8_220[8][8];
5cebb24b 206
516b1f82 207#ifdef ARCH_X86
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208void in_asm_used_var_warning_killer()
209{
20380eb8 210 volatile int i= bF8+bFC+w10+
5ac80202 211 bm00001111+bm00000111+bm11111000+b16Mask+g16Mask+r16Mask+b15Mask+g15Mask+r15Mask+
6ff0ad6b 212 M24A+M24B+M24C+w02 + b5Dither+g5Dither+r5Dither+g6Dither+dither4[0]+dither8[0]+bm01010101;
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213 if(i) i=0;
214}
215#endif
d604bab9 216
5859233b 217static inline void yuv2yuvXinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
e3d2500f 218 int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
5859233b 219 uint8_t *dest, uint8_t *uDest, uint8_t *vDest, int dstW, int chrDstW)
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220{
221 //FIXME Optimize (just quickly writen not opti..)
222 int i;
5859233b 223 for(i=0; i<dstW; i++)
e3d2500f 224 {
379a2036 225 int val=1<<18;
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226 int j;
227 for(j=0; j<lumFilterSize; j++)
228 val += lumSrc[j][i] * lumFilter[j];
229
230 dest[i]= MIN(MAX(val>>19, 0), 255);
231 }
232
233 if(uDest != NULL)
5859233b 234 for(i=0; i<chrDstW; i++)
e3d2500f 235 {
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236 int u=1<<18;
237 int v=1<<18;
e3d2500f 238 int j;
627690b5 239 for(j=0; j<chrFilterSize; j++)
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240 {
241 u += chrSrc[j][i] * chrFilter[j];
242 v += chrSrc[j][i + 2048] * chrFilter[j];
243 }
244
245 uDest[i]= MIN(MAX(u>>19, 0), 255);
246 vDest[i]= MIN(MAX(v>>19, 0), 255);
247 }
248}
249
46de8b73 250
25593e29 251#define YSCALE_YUV_2_PACKEDX_C(type) \
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252 for(i=0; i<(dstW>>1); i++){\
253 int j;\
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254 int Y1=1<<18;\
255 int Y2=1<<18;\
256 int U=1<<18;\
257 int V=1<<18;\
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258 type *r, *b, *g;\
259 const int i2= 2*i;\
260 \
261 for(j=0; j<lumFilterSize; j++)\
262 {\
263 Y1 += lumSrc[j][i2] * lumFilter[j];\
264 Y2 += lumSrc[j][i2+1] * lumFilter[j];\
265 }\
266 for(j=0; j<chrFilterSize; j++)\
267 {\
268 U += chrSrc[j][i] * chrFilter[j];\
269 V += chrSrc[j][i+2048] * chrFilter[j];\
270 }\
271 Y1>>=19;\
272 Y2>>=19;\
273 U >>=19;\
274 V >>=19;\
275 if((Y1|Y2|U|V)&256)\
276 {\
277 if(Y1>255) Y1=255;\
278 else if(Y1<0)Y1=0;\
279 if(Y2>255) Y2=255;\
280 else if(Y2<0)Y2=0;\
281 if(U>255) U=255;\
282 else if(U<0) U=0;\
283 if(V>255) V=255;\
284 else if(V<0) V=0;\
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285 }
286
287#define YSCALE_YUV_2_RGBX_C(type) \
25593e29 288 YSCALE_YUV_2_PACKEDX_C(type)\
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289 r = c->table_rV[V];\
290 g = c->table_gU[U] + c->table_gV[V];\
291 b = c->table_bU[U];\
292
25593e29 293#define YSCALE_YUV_2_PACKED2_C \
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294 for(i=0; i<(dstW>>1); i++){\
295 const int i2= 2*i;\
296 int Y1= (buf0[i2 ]*yalpha1+buf1[i2 ]*yalpha)>>19;\
297 int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>19;\
298 int U= (uvbuf0[i ]*uvalpha1+uvbuf1[i ]*uvalpha)>>19;\
299 int V= (uvbuf0[i+2048]*uvalpha1+uvbuf1[i+2048]*uvalpha)>>19;\
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300
301#define YSCALE_YUV_2_RGB2_C(type) \
25593e29 302 YSCALE_YUV_2_PACKED2_C\
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303 type *r, *b, *g;\
304 r = c->table_rV[V];\
305 g = c->table_gU[U] + c->table_gV[V];\
306 b = c->table_bU[U];\
307
25593e29 308#define YSCALE_YUV_2_PACKED1_C \
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309 for(i=0; i<(dstW>>1); i++){\
310 const int i2= 2*i;\
311 int Y1= buf0[i2 ]>>7;\
312 int Y2= buf0[i2+1]>>7;\
313 int U= (uvbuf1[i ])>>7;\
314 int V= (uvbuf1[i+2048])>>7;\
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315
316#define YSCALE_YUV_2_RGB1_C(type) \
25593e29 317 YSCALE_YUV_2_PACKED1_C\
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318 type *r, *b, *g;\
319 r = c->table_rV[V];\
320 g = c->table_gU[U] + c->table_gV[V];\
321 b = c->table_bU[U];\
322
25593e29 323#define YSCALE_YUV_2_PACKED1B_C \
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324 for(i=0; i<(dstW>>1); i++){\
325 const int i2= 2*i;\
326 int Y1= buf0[i2 ]>>7;\
327 int Y2= buf0[i2+1]>>7;\
328 int U= (uvbuf0[i ] + uvbuf1[i ])>>8;\
329 int V= (uvbuf0[i+2048] + uvbuf1[i+2048])>>8;\
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330
331#define YSCALE_YUV_2_RGB1B_C(type) \
25593e29 332 YSCALE_YUV_2_PACKED1B_C\
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333 type *r, *b, *g;\
334 r = c->table_rV[V];\
335 g = c->table_gU[U] + c->table_gV[V];\
336 b = c->table_bU[U];\
337
46de8b73 338#define YSCALE_YUV_2_ANYRGB_C(func, func2)\
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339 switch(c->dstFormat)\
340 {\
341 case IMGFMT_BGR32:\
342 case IMGFMT_RGB32:\
343 func(uint32_t)\
344 ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];\
345 ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];\
346 } \
347 break;\
348 case IMGFMT_RGB24:\
349 func(uint8_t)\
350 ((uint8_t*)dest)[0]= r[Y1];\
351 ((uint8_t*)dest)[1]= g[Y1];\
352 ((uint8_t*)dest)[2]= b[Y1];\
353 ((uint8_t*)dest)[3]= r[Y2];\
354 ((uint8_t*)dest)[4]= g[Y2];\
355 ((uint8_t*)dest)[5]= b[Y2];\
ae4cffd9 356 dest+=6;\
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357 }\
358 break;\
359 case IMGFMT_BGR24:\
360 func(uint8_t)\
361 ((uint8_t*)dest)[0]= b[Y1];\
362 ((uint8_t*)dest)[1]= g[Y1];\
363 ((uint8_t*)dest)[2]= r[Y1];\
364 ((uint8_t*)dest)[3]= b[Y2];\
365 ((uint8_t*)dest)[4]= g[Y2];\
366 ((uint8_t*)dest)[5]= r[Y2];\
ae4cffd9 367 dest+=6;\
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368 }\
369 break;\
370 case IMGFMT_RGB16:\
371 case IMGFMT_BGR16:\
372 {\
373 const int dr1= dither_2x2_8[y&1 ][0];\
374 const int dg1= dither_2x2_4[y&1 ][0];\
375 const int db1= dither_2x2_8[(y&1)^1][0];\
376 const int dr2= dither_2x2_8[y&1 ][1];\
377 const int dg2= dither_2x2_4[y&1 ][1];\
378 const int db2= dither_2x2_8[(y&1)^1][1];\
379 func(uint16_t)\
380 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
381 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
382 }\
383 }\
384 break;\
385 case IMGFMT_RGB15:\
386 case IMGFMT_BGR15:\
387 {\
388 const int dr1= dither_2x2_8[y&1 ][0];\
389 const int dg1= dither_2x2_8[y&1 ][1];\
390 const int db1= dither_2x2_8[(y&1)^1][0];\
391 const int dr2= dither_2x2_8[y&1 ][1];\
392 const int dg2= dither_2x2_8[y&1 ][0];\
393 const int db2= dither_2x2_8[(y&1)^1][1];\
394 func(uint16_t)\
395 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
396 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
397 }\
398 }\
399 break;\
400 case IMGFMT_RGB8:\
401 case IMGFMT_BGR8:\
402 {\
403 const uint8_t * const d64= dither_8x8_73[y&7];\
404 const uint8_t * const d32= dither_8x8_32[y&7];\
405 func(uint8_t)\
406 ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];\
407 ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];\
408 }\
409 }\
410 break;\
411 case IMGFMT_RGB4:\
412 case IMGFMT_BGR4:\
413 {\
414 const uint8_t * const d64= dither_8x8_73 [y&7];\
415 const uint8_t * const d128=dither_8x8_220[y&7];\
416 func(uint8_t)\
799fd467 417 ((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]\
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418 + ((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);\
419 }\
420 }\
421 break;\
422 case IMGFMT_RG4B:\
423 case IMGFMT_BG4B:\
424 {\
425 const uint8_t * const d64= dither_8x8_73 [y&7];\
426 const uint8_t * const d128=dither_8x8_220[y&7];\
427 func(uint8_t)\
cf7d1c1a
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428 ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];\
429 ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];\
430 }\
431 }\
432 break;\
433 case IMGFMT_RGB1:\
434 case IMGFMT_BGR1:\
435 {\
436 const uint8_t * const d128=dither_8x8_220[y&7];\
437 uint8_t *g= c->table_gU[128] + c->table_gV[128];\
438 for(i=0; i<dstW-7; i+=8){\
439 int acc;\
440 acc = g[((buf0[i ]*yalpha1+buf1[i ]*yalpha)>>19) + d128[0]];\
441 acc+= acc + g[((buf0[i+1]*yalpha1+buf1[i+1]*yalpha)>>19) + d128[1]];\
442 acc+= acc + g[((buf0[i+2]*yalpha1+buf1[i+2]*yalpha)>>19) + d128[2]];\
443 acc+= acc + g[((buf0[i+3]*yalpha1+buf1[i+3]*yalpha)>>19) + d128[3]];\
444 acc+= acc + g[((buf0[i+4]*yalpha1+buf1[i+4]*yalpha)>>19) + d128[4]];\
445 acc+= acc + g[((buf0[i+5]*yalpha1+buf1[i+5]*yalpha)>>19) + d128[5]];\
446 acc+= acc + g[((buf0[i+6]*yalpha1+buf1[i+6]*yalpha)>>19) + d128[6]];\
447 acc+= acc + g[((buf0[i+7]*yalpha1+buf1[i+7]*yalpha)>>19) + d128[7]];\
448 ((uint8_t*)dest)[0]= acc;\
ae4cffd9 449 dest++;\
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MN
450 }\
451\
452/*\
453((uint8_t*)dest)-= dstW>>4;\
454{\
455 int acc=0;\
456 int left=0;\
457 static int top[1024];\
458 static int last_new[1024][1024];\
459 static int last_in3[1024][1024];\
460 static int drift[1024][1024];\
461 int topLeft=0;\
462 int shift=0;\
463 int count=0;\
464 const uint8_t * const d128=dither_8x8_220[y&7];\
465 int error_new=0;\
466 int error_in3=0;\
467 int f=0;\
468 \
469 for(i=dstW>>1; i<dstW; i++){\
470 int in= ((buf0[i ]*yalpha1+buf1[i ]*yalpha)>>19);\
471 int in2 = (76309 * (in - 16) + 32768) >> 16;\
472 int in3 = (in2 < 0) ? 0 : ((in2 > 255) ? 255 : in2);\
473 int old= (left*7 + topLeft + top[i]*5 + top[i+1]*3)/20 + in3\
474 + (last_new[y][i] - in3)*f/256;\
475 int new= old> 128 ? 255 : 0;\
476\
477 error_new+= ABS(last_new[y][i] - new);\
478 error_in3+= ABS(last_in3[y][i] - in3);\
479 f= error_new - error_in3*4;\
480 if(f<0) f=0;\
481 if(f>256) f=256;\
482\
483 topLeft= top[i];\
484 left= top[i]= old - new;\
485 last_new[y][i]= new;\
486 last_in3[y][i]= in3;\
487\
488 acc+= acc + (new&1);\
489 if((i&7)==6){\
490 ((uint8_t*)dest)[0]= acc;\
491 ((uint8_t*)dest)++;\
492 }\
493 }\
494}\
495*/\
496 }\
497 break;\
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498 case IMGFMT_YUY2:\
499 func2\
500 ((uint8_t*)dest)[2*i2+0]= Y1;\
501 ((uint8_t*)dest)[2*i2+1]= U;\
502 ((uint8_t*)dest)[2*i2+2]= Y2;\
503 ((uint8_t*)dest)[2*i2+3]= V;\
504 } \
505 break;\
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506 case IMGFMT_UYVY:\
507 func2\
508 ((uint8_t*)dest)[2*i2+0]= U;\
509 ((uint8_t*)dest)[2*i2+1]= Y1;\
510 ((uint8_t*)dest)[2*i2+2]= V;\
511 ((uint8_t*)dest)[2*i2+3]= Y2;\
512 } \
513 break;\
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514 }\
515
516
25593e29 517static inline void yuv2packedXinC(SwsContext *c, int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
e3d2500f 518 int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
cf7d1c1a 519 uint8_t *dest, int dstW, int y)
e3d2500f 520{
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521 int i;
522 switch(c->dstFormat)
e3d2500f 523 {
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524 case IMGFMT_RGB32:
525 case IMGFMT_BGR32:
526 YSCALE_YUV_2_RGBX_C(uint32_t)
527 ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];
528 ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];
e3d2500f 529 }
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530 break;
531 case IMGFMT_RGB24:
532 YSCALE_YUV_2_RGBX_C(uint8_t)
533 ((uint8_t*)dest)[0]= r[Y1];
534 ((uint8_t*)dest)[1]= g[Y1];
535 ((uint8_t*)dest)[2]= b[Y1];
536 ((uint8_t*)dest)[3]= r[Y2];
537 ((uint8_t*)dest)[4]= g[Y2];
538 ((uint8_t*)dest)[5]= b[Y2];
ae4cffd9 539 dest+=6;
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MN
540 }
541 break;
542 case IMGFMT_BGR24:
543 YSCALE_YUV_2_RGBX_C(uint8_t)
544 ((uint8_t*)dest)[0]= b[Y1];
545 ((uint8_t*)dest)[1]= g[Y1];
546 ((uint8_t*)dest)[2]= r[Y1];
547 ((uint8_t*)dest)[3]= b[Y2];
548 ((uint8_t*)dest)[4]= g[Y2];
549 ((uint8_t*)dest)[5]= r[Y2];
ae4cffd9 550 dest+=6;
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MN
551 }
552 break;
553 case IMGFMT_RGB16:
554 case IMGFMT_BGR16:
555 {
556 const int dr1= dither_2x2_8[y&1 ][0];
557 const int dg1= dither_2x2_4[y&1 ][0];
558 const int db1= dither_2x2_8[(y&1)^1][0];
559 const int dr2= dither_2x2_8[y&1 ][1];
560 const int dg2= dither_2x2_4[y&1 ][1];
561 const int db2= dither_2x2_8[(y&1)^1][1];
562 YSCALE_YUV_2_RGBX_C(uint16_t)
563 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];
564 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];
e3d2500f 565 }
e3d2500f 566 }
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567 break;
568 case IMGFMT_RGB15:
569 case IMGFMT_BGR15:
570 {
571 const int dr1= dither_2x2_8[y&1 ][0];
572 const int dg1= dither_2x2_8[y&1 ][1];
573 const int db1= dither_2x2_8[(y&1)^1][0];
574 const int dr2= dither_2x2_8[y&1 ][1];
575 const int dg2= dither_2x2_8[y&1 ][0];
576 const int db2= dither_2x2_8[(y&1)^1][1];
577 YSCALE_YUV_2_RGBX_C(uint16_t)
578 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];
579 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];
e3d2500f 580 }
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MN
581 }
582 break;
583 case IMGFMT_RGB8:
584 case IMGFMT_BGR8:
585 {
586 const uint8_t * const d64= dither_8x8_73[y&7];
587 const uint8_t * const d32= dither_8x8_32[y&7];
588 YSCALE_YUV_2_RGBX_C(uint8_t)
589 ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];
590 ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];
e3d2500f 591 }
e3d2500f 592 }
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MN
593 break;
594 case IMGFMT_RGB4:
595 case IMGFMT_BGR4:
596 {
597 const uint8_t * const d64= dither_8x8_73 [y&7];
598 const uint8_t * const d128=dither_8x8_220[y&7];
599 YSCALE_YUV_2_RGBX_C(uint8_t)
799fd467 600 ((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]
f17457ac
MN
601 +((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);
602 }
603 }
604 break;
605 case IMGFMT_RG4B:
606 case IMGFMT_BG4B:
607 {
608 const uint8_t * const d64= dither_8x8_73 [y&7];
609 const uint8_t * const d128=dither_8x8_220[y&7];
610 YSCALE_YUV_2_RGBX_C(uint8_t)
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611 ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];
612 ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];
e3d2500f 613 }
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MN
614 }
615 break;
616 case IMGFMT_RGB1:
617 case IMGFMT_BGR1:
618 {
619 const uint8_t * const d128=dither_8x8_220[y&7];
620 uint8_t *g= c->table_gU[128] + c->table_gV[128];
621 int acc=0;
622 for(i=0; i<dstW-1; i+=2){
623 int j;
379a2036
MN
624 int Y1=1<<18;
625 int Y2=1<<18;
cf7d1c1a
MN
626
627 for(j=0; j<lumFilterSize; j++)
628 {
629 Y1 += lumSrc[j][i] * lumFilter[j];
630 Y2 += lumSrc[j][i+1] * lumFilter[j];
631 }
632 Y1>>=19;
633 Y2>>=19;
634 if((Y1|Y2)&256)
635 {
636 if(Y1>255) Y1=255;
637 else if(Y1<0)Y1=0;
638 if(Y2>255) Y2=255;
639 else if(Y2<0)Y2=0;
640 }
641 acc+= acc + g[Y1+d128[(i+0)&7]];
642 acc+= acc + g[Y2+d128[(i+1)&7]];
643 if((i&7)==6){
644 ((uint8_t*)dest)[0]= acc;
ae4cffd9 645 dest++;
cf7d1c1a 646 }
e3d2500f 647 }
e3d2500f 648 }
cf7d1c1a 649 break;
46de8b73 650 case IMGFMT_YUY2:
25593e29 651 YSCALE_YUV_2_PACKEDX_C(void)
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MN
652 ((uint8_t*)dest)[2*i2+0]= Y1;
653 ((uint8_t*)dest)[2*i2+1]= U;
654 ((uint8_t*)dest)[2*i2+2]= Y2;
655 ((uint8_t*)dest)[2*i2+3]= V;
656 }
657 break;
caeaabe7
AB
658 case IMGFMT_UYVY:
659 YSCALE_YUV_2_PACKEDX_C(void)
660 ((uint8_t*)dest)[2*i2+0]= U;
661 ((uint8_t*)dest)[2*i2+1]= Y1;
662 ((uint8_t*)dest)[2*i2+2]= V;
663 ((uint8_t*)dest)[2*i2+3]= Y2;
664 }
665 break;
e3d2500f
MN
666 }
667}
668
669
7630f2e0
MN
670//Note: we have C, X86, MMX, MMX2, 3DNOW version therse no 3DNOW+MMX2 one
671//Plain C versions
726a959a
MN
672#if !defined (HAVE_MMX) || defined (RUNTIME_CPUDETECT)
673#define COMPILE_C
674#endif
675
a2faa401
RD
676#ifdef ARCH_POWERPC
677#ifdef HAVE_ALTIVEC
678#define COMPILE_ALTIVEC
679#endif //HAVE_ALTIVEC
680#endif //ARCH_POWERPC
681
516b1f82 682#ifdef ARCH_X86
726a959a
MN
683
684#if (defined (HAVE_MMX) && !defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)
685#define COMPILE_MMX
686#endif
687
688#if defined (HAVE_MMX2) || defined (RUNTIME_CPUDETECT)
689#define COMPILE_MMX2
690#endif
691
692#if (defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)
693#define COMPILE_3DNOW
694#endif
516b1f82 695#endif //ARCH_X86
726a959a
MN
696
697#undef HAVE_MMX
698#undef HAVE_MMX2
699#undef HAVE_3DNOW
726a959a
MN
700
701#ifdef COMPILE_C
7630f2e0
MN
702#undef HAVE_MMX
703#undef HAVE_MMX2
704#undef HAVE_3DNOW
a2faa401 705#undef HAVE_ALTIVEC
7630f2e0
MN
706#define RENAME(a) a ## _C
707#include "swscale_template.c"
726a959a 708#endif
397c035e 709
a2faa401
RD
710#ifdef ARCH_POWERPC
711#ifdef COMPILE_ALTIVEC
712#undef RENAME
713#define HAVE_ALTIVEC
714#define RENAME(a) a ## _altivec
715#include "swscale_template.c"
716#endif
717#endif //ARCH_POWERPC
718
516b1f82 719#ifdef ARCH_X86
397c035e 720
7630f2e0
MN
721//X86 versions
722/*
723#undef RENAME
724#undef HAVE_MMX
725#undef HAVE_MMX2
726#undef HAVE_3DNOW
727#define ARCH_X86
728#define RENAME(a) a ## _X86
729#include "swscale_template.c"
1faf0867 730*/
7630f2e0 731//MMX versions
726a959a 732#ifdef COMPILE_MMX
7630f2e0
MN
733#undef RENAME
734#define HAVE_MMX
735#undef HAVE_MMX2
736#undef HAVE_3DNOW
7630f2e0
MN
737#define RENAME(a) a ## _MMX
738#include "swscale_template.c"
726a959a 739#endif
7630f2e0
MN
740
741//MMX2 versions
726a959a 742#ifdef COMPILE_MMX2
7630f2e0
MN
743#undef RENAME
744#define HAVE_MMX
745#define HAVE_MMX2
746#undef HAVE_3DNOW
7630f2e0
MN
747#define RENAME(a) a ## _MMX2
748#include "swscale_template.c"
726a959a 749#endif
7630f2e0
MN
750
751//3DNOW versions
726a959a 752#ifdef COMPILE_3DNOW
7630f2e0
MN
753#undef RENAME
754#define HAVE_MMX
755#undef HAVE_MMX2
756#define HAVE_3DNOW
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757#define RENAME(a) a ## _3DNow
758#include "swscale_template.c"
726a959a 759#endif
7630f2e0 760
516b1f82 761#endif //ARCH_X86
7630f2e0 762
77a416e8 763// minor note: the HAVE_xyz is messed up after that line so don't use it
d604bab9 764
a86c461c
MN
765static double getSplineCoeff(double a, double b, double c, double d, double dist)
766{
767// printf("%f %f %f %f %f\n", a,b,c,d,dist);
768 if(dist<=1.0) return ((d*dist + c)*dist + b)*dist +a;
769 else return getSplineCoeff( 0.0,
770 b+ 2.0*c + 3.0*d,
771 c + 3.0*d,
772 -b- 3.0*c - 6.0*d,
773 dist-1.0);
774}
6c7506de 775
c7f822d9
MN
776static inline void initFilter(int16_t **outFilter, int16_t **filterPos, int *outFilterSize, int xInc,
777 int srcW, int dstW, int filterAlign, int one, int flags,
66d1cdb6 778 SwsVector *srcFilter, SwsVector *dstFilter, double param[2])
28bf81c9
MN
779{
780 int i;
c7f822d9
MN
781 int filterSize;
782 int filter2Size;
783 int minFilterSize;
784 double *filter=NULL;
785 double *filter2=NULL;
28bf81c9 786#ifdef ARCH_X86
516b1f82 787 if(flags & SWS_CPU_CAPS_MMX)
28bf81c9 788 asm volatile("emms\n\t"::: "memory"); //FIXME this shouldnt be required but it IS (even for non mmx versions)
726a959a 789#endif
31190492 790
adeaecb9 791 // Note the +1 is for the MMXscaler which reads over the end
6c7506de 792 *filterPos = (int16_t*)memalign(8, (dstW+1)*sizeof(int16_t));
6c7506de 793
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MN
794 if(ABS(xInc - 0x10000) <10) // unscaled
795 {
796 int i;
c7f822d9
MN
797 filterSize= 1;
798 filter= (double*)memalign(8, dstW*sizeof(double)*filterSize);
799 for(i=0; i<dstW*filterSize; i++) filter[i]=0;
28bf81c9
MN
800
801 for(i=0; i<dstW; i++)
802 {
c7f822d9
MN
803 filter[i*filterSize]=1;
804 (*filterPos)[i]=i;
28bf81c9
MN
805 }
806
807 }
ff7ba856
MN
808 else if(flags&SWS_POINT) // lame looking point sampling mode
809 {
810 int i;
811 int xDstInSrc;
812 filterSize= 1;
813 filter= (double*)memalign(8, dstW*sizeof(double)*filterSize);
814
815 xDstInSrc= xInc/2 - 0x8000;
816 for(i=0; i<dstW; i++)
817 {
8a01d20c 818 int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;
ff7ba856
MN
819
820 (*filterPos)[i]= xx;
821 filter[i]= 1.0;
822 xDstInSrc+= xInc;
823 }
824 }
a86c461c 825 else if((xInc <= (1<<16) && (flags&SWS_AREA)) || (flags&SWS_FAST_BILINEAR)) // bilinear upscale
28bf81c9
MN
826 {
827 int i;
828 int xDstInSrc;
c7f822d9
MN
829 if (flags&SWS_BICUBIC) filterSize= 4;
830 else if(flags&SWS_X ) filterSize= 4;
d8863d37 831 else filterSize= 2; // SWS_BILINEAR / SWS_AREA
c7f822d9 832 filter= (double*)memalign(8, dstW*sizeof(double)*filterSize);
28bf81c9
MN
833
834 xDstInSrc= xInc/2 - 0x8000;
835 for(i=0; i<dstW; i++)
836 {
8a01d20c 837 int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;
28bf81c9
MN
838 int j;
839
c7f822d9 840 (*filterPos)[i]= xx;
d8863d37 841 //Bilinear upscale / linear interpolate / Area averaging
c7f822d9 842 for(j=0; j<filterSize; j++)
28bf81c9
MN
843 {
844 double d= ABS((xx<<16) - xDstInSrc)/(double)(1<<16);
845 double coeff= 1.0 - d;
846 if(coeff<0) coeff=0;
c7f822d9 847 filter[i*filterSize + j]= coeff;
28bf81c9
MN
848 xx++;
849 }
28bf81c9
MN
850 xDstInSrc+= xInc;
851 }
852 }
a86c461c 853 else
28bf81c9 854 {
a86c461c
MN
855 double xDstInSrc;
856 double sizeFactor, filterSizeInSrc;
857 const double xInc1= (double)xInc / (double)(1<<16);
a86c461c
MN
858
859 if (flags&SWS_BICUBIC) sizeFactor= 4.0;
860 else if(flags&SWS_X) sizeFactor= 8.0;
861 else if(flags&SWS_AREA) sizeFactor= 1.0; //downscale only, for upscale it is bilinear
862 else if(flags&SWS_GAUSS) sizeFactor= 8.0; // infinite ;)
66d1cdb6 863 else if(flags&SWS_LANCZOS) sizeFactor= param[0] != SWS_PARAM_DEFAULT ? 2.0*param[0] : 6.0;
93768378 864 else if(flags&SWS_SINC) sizeFactor= 20.0; // infinite ;)
a86c461c
MN
865 else if(flags&SWS_SPLINE) sizeFactor= 20.0; // infinite ;)
866 else if(flags&SWS_BILINEAR) sizeFactor= 2.0;
93768378
MN
867 else {
868 sizeFactor= 0.0; //GCC warning killer
869 ASSERT(0)
870 }
a86c461c
MN
871
872 if(xInc1 <= 1.0) filterSizeInSrc= sizeFactor; // upscale
873 else filterSizeInSrc= sizeFactor*srcW / (double)dstW;
81b7c056 874
a86c461c
MN
875 filterSize= (int)ceil(1 + filterSizeInSrc); // will be reduced later if possible
876 if(filterSize > srcW-2) filterSize=srcW-2;
28bf81c9 877
a86c461c
MN
878 filter= (double*)memalign(16, dstW*sizeof(double)*filterSize);
879
880 xDstInSrc= xInc1 / 2.0 - 0.5;
28bf81c9
MN
881 for(i=0; i<dstW; i++)
882 {
a86c461c 883 int xx= (int)(xDstInSrc - (filterSize-1)*0.5 + 0.5);
28bf81c9 884 int j;
c7f822d9
MN
885 (*filterPos)[i]= xx;
886 for(j=0; j<filterSize; j++)
28bf81c9 887 {
a86c461c 888 double d= ABS(xx - xDstInSrc)/filterSizeInSrc*sizeFactor;
28bf81c9 889 double coeff;
a86c461c 890 if(flags & SWS_BICUBIC)
28bf81c9 891 {
66d1cdb6
MN
892 double B= param[0] != SWS_PARAM_DEFAULT ? param[0] : 0.0;
893 double C= param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6;
894
895 if(d<1.0)
896 coeff = (12-9*B-6*C)*d*d*d + (-18+12*B+6*C)*d*d + 6-2*B;
28bf81c9 897 else if(d<2.0)
66d1cdb6 898 coeff = (-B-6*C)*d*d*d + (6*B+30*C)*d*d + (-12*B-48*C)*d +8*B+24*C;
28bf81c9
MN
899 else
900 coeff=0.0;
901 }
a86c461c
MN
902/* else if(flags & SWS_X)
903 {
904 double p= param ? param*0.01 : 0.3;
905 coeff = d ? sin(d*PI)/(d*PI) : 1.0;
906 coeff*= pow(2.0, - p*d*d);
907 }*/
908 else if(flags & SWS_X)
909 {
66d1cdb6 910 double A= param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;
a86c461c
MN
911
912 if(d<1.0)
913 coeff = cos(d*PI);
914 else
915 coeff=-1.0;
916 if(coeff<0.0) coeff= -pow(-coeff, A);
917 else coeff= pow( coeff, A);
918 coeff= coeff*0.5 + 0.5;
919 }
d8863d37 920 else if(flags & SWS_AREA)
28bf81c9 921 {
a86c461c 922 double srcPixelSize= 1.0/xInc1;
d8863d37
MN
923 if(d + srcPixelSize/2 < 0.5) coeff= 1.0;
924 else if(d - srcPixelSize/2 < 0.5) coeff= (0.5-d)/srcPixelSize + 0.5;
925 else coeff=0.0;
926 }
a86c461c
MN
927 else if(flags & SWS_GAUSS)
928 {
66d1cdb6 929 double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
a86c461c
MN
930 coeff = pow(2.0, - p*d*d);
931 }
932 else if(flags & SWS_SINC)
933 {
934 coeff = d ? sin(d*PI)/(d*PI) : 1.0;
935 }
936 else if(flags & SWS_LANCZOS)
937 {
66d1cdb6 938 double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
a86c461c
MN
939 coeff = d ? sin(d*PI)*sin(d*PI/p)/(d*d*PI*PI/p) : 1.0;
940 if(d>p) coeff=0;
941 }
942 else if(flags & SWS_BILINEAR)
28bf81c9
MN
943 {
944 coeff= 1.0 - d;
945 if(coeff<0) coeff=0;
946 }
a86c461c
MN
947 else if(flags & SWS_SPLINE)
948 {
949 double p=-2.196152422706632;
950 coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, d);
951 }
93768378
MN
952 else {
953 coeff= 0.0; //GCC warning killer
954 ASSERT(0)
955 }
a86c461c 956
c7f822d9 957 filter[i*filterSize + j]= coeff;
28bf81c9
MN
958 xx++;
959 }
a86c461c 960 xDstInSrc+= xInc1;
28bf81c9
MN
961 }
962 }
963
c7f822d9
MN
964 /* apply src & dst Filter to filter -> filter2
965 free(filter);
966 */
81b7c056 967 ASSERT(filterSize>0)
c7f822d9
MN
968 filter2Size= filterSize;
969 if(srcFilter) filter2Size+= srcFilter->length - 1;
970 if(dstFilter) filter2Size+= dstFilter->length - 1;
81b7c056 971 ASSERT(filter2Size>0)
c7f822d9
MN
972 filter2= (double*)memalign(8, filter2Size*dstW*sizeof(double));
973
974 for(i=0; i<dstW; i++)
975 {
976 int j;
977 SwsVector scaleFilter;
978 SwsVector *outVec;
979
980 scaleFilter.coeff= filter + i*filterSize;
981 scaleFilter.length= filterSize;
982
d4e24275 983 if(srcFilter) outVec= sws_getConvVec(srcFilter, &scaleFilter);
c7f822d9
MN
984 else outVec= &scaleFilter;
985
986 ASSERT(outVec->length == filter2Size)
987 //FIXME dstFilter
988
989 for(j=0; j<outVec->length; j++)
990 {
991 filter2[i*filter2Size + j]= outVec->coeff[j];
992 }
993
994 (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;
995
d4e24275 996 if(outVec != &scaleFilter) sws_freeVec(outVec);
c7f822d9
MN
997 }
998 free(filter); filter=NULL;
999
1000 /* try to reduce the filter-size (step1 find size and shift left) */
1001 // Assume its near normalized (*0.5 or *2.0 is ok but * 0.001 is not)
1002 minFilterSize= 0;
1003 for(i=dstW-1; i>=0; i--)
1004 {
1005 int min= filter2Size;
1006 int j;
1007 double cutOff=0.0;
1008
1009 /* get rid off near zero elements on the left by shifting left */
1010 for(j=0; j<filter2Size; j++)
1011 {
1012 int k;
1013 cutOff += ABS(filter2[i*filter2Size]);
1014
1015 if(cutOff > SWS_MAX_REDUCE_CUTOFF) break;
1016
77a416e8 1017 /* preserve Monotonicity because the core can't handle the filter otherwise */
c7f822d9
MN
1018 if(i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;
1019
1020 // Move filter coeffs left
1021 for(k=1; k<filter2Size; k++)
1022 filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k];
1023 filter2[i*filter2Size + k - 1]= 0.0;
1024 (*filterPos)[i]++;
1025 }
1026
1027 cutOff=0.0;
1028 /* count near zeros on the right */
1029 for(j=filter2Size-1; j>0; j--)
1030 {
1031 cutOff += ABS(filter2[i*filter2Size + j]);
1032
1033 if(cutOff > SWS_MAX_REDUCE_CUTOFF) break;
1034 min--;
1035 }
1036
1037 if(min>minFilterSize) minFilterSize= min;
1038 }
1039
8c266f0c
RD
1040 if (flags & SWS_CPU_CAPS_ALTIVEC) {
1041 // we can handle the special case 4,
1042 // so we don't want to go to the full 8
1043 if (minFilterSize < 5)
1044 filterAlign = 4;
1045
1046 // we really don't want to waste our time
1047 // doing useless computation, so fall-back on
1048 // the scalar C code for very small filter.
1049 // vectorizing is worth it only if you have
1050 // decent-sized vector.
1051 if (minFilterSize < 3)
1052 filterAlign = 1;
1053 }
1054
81b7c056 1055 ASSERT(minFilterSize > 0)
6c7506de 1056 filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));
81b7c056 1057 ASSERT(filterSize > 0)
6c7506de
MN
1058 filter= (double*)memalign(8, filterSize*dstW*sizeof(double));
1059 *outFilterSize= filterSize;
1060
4a53a912 1061 if(flags&SWS_PRINT_INFO)
0d9f3d85 1062 MSG_INFO("SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);
c7f822d9
MN
1063 /* try to reduce the filter-size (step2 reduce it) */
1064 for(i=0; i<dstW; i++)
1065 {
1066 int j;
1067
6c7506de
MN
1068 for(j=0; j<filterSize; j++)
1069 {
1070 if(j>=filter2Size) filter[i*filterSize + j]= 0.0;
1071 else filter[i*filterSize + j]= filter2[i*filter2Size + j];
1072 }
c7f822d9 1073 }
6c7506de
MN
1074 free(filter2); filter2=NULL;
1075
c7f822d9
MN
1076
1077 //FIXME try to align filterpos if possible
1078
28bf81c9
MN
1079 //fix borders
1080 for(i=0; i<dstW; i++)
1081 {
1082 int j;
c7f822d9 1083 if((*filterPos)[i] < 0)
28bf81c9
MN
1084 {
1085 // Move filter coeffs left to compensate for filterPos
6c7506de 1086 for(j=1; j<filterSize; j++)
28bf81c9 1087 {
c7f822d9 1088 int left= MAX(j + (*filterPos)[i], 0);
6c7506de
MN
1089 filter[i*filterSize + left] += filter[i*filterSize + j];
1090 filter[i*filterSize + j]=0;
28bf81c9 1091 }
c7f822d9 1092 (*filterPos)[i]= 0;
28bf81c9
MN
1093 }
1094
6c7506de 1095 if((*filterPos)[i] + filterSize > srcW)
28bf81c9 1096 {
6c7506de 1097 int shift= (*filterPos)[i] + filterSize - srcW;
28bf81c9 1098 // Move filter coeffs right to compensate for filterPos
6c7506de 1099 for(j=filterSize-2; j>=0; j--)
28bf81c9 1100 {
6c7506de
MN
1101 int right= MIN(j + shift, filterSize-1);
1102 filter[i*filterSize +right] += filter[i*filterSize +j];
1103 filter[i*filterSize +j]=0;
28bf81c9 1104 }
6c7506de 1105 (*filterPos)[i]= srcW - filterSize;
28bf81c9
MN
1106 }
1107 }
1108
6c7506de
MN
1109 // Note the +1 is for the MMXscaler which reads over the end
1110 *outFilter= (int16_t*)memalign(8, *outFilterSize*(dstW+1)*sizeof(int16_t));
1111 memset(*outFilter, 0, *outFilterSize*(dstW+1)*sizeof(int16_t));
c7f822d9
MN
1112
1113 /* Normalize & Store in outFilter */
28bf81c9
MN
1114 for(i=0; i<dstW; i++)
1115 {
1116 int j;
ff490720 1117 double error=0;
28bf81c9
MN
1118 double sum=0;
1119 double scale= one;
ff490720 1120
6c7506de 1121 for(j=0; j<filterSize; j++)
28bf81c9 1122 {
6c7506de 1123 sum+= filter[i*filterSize + j];
28bf81c9
MN
1124 }
1125 scale/= sum;
93768378 1126 for(j=0; j<*outFilterSize; j++)
28bf81c9 1127 {
ff490720
MN
1128 double v= filter[i*filterSize + j]*scale + error;
1129 int intV= floor(v + 0.5);
1130 (*outFilter)[i*(*outFilterSize) + j]= intV;
1131 error = v - intV;
28bf81c9
MN
1132 }
1133 }
adeaecb9
MN
1134
1135 (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end
1136 for(i=0; i<*outFilterSize; i++)
1137 {
1138 int j= dstW*(*outFilterSize);
1139 (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];
1140 }
c7f822d9 1141
6c7506de 1142 free(filter);
7630f2e0 1143}
31190492 1144
28bf81c9 1145#ifdef ARCH_X86
b7dc6f66 1146static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode, int16_t *filter, int32_t *filterPos, int numSplits)
28bf81c9 1147{
b7dc6f66
MN
1148 uint8_t *fragmentA;
1149 int imm8OfPShufW1A;
1150 int imm8OfPShufW2A;
1151 int fragmentLengthA;
1152 uint8_t *fragmentB;
1153 int imm8OfPShufW1B;
1154 int imm8OfPShufW2B;
1155 int fragmentLengthB;
1156 int fragmentPos;
28bf81c9
MN
1157
1158 int xpos, i;
1159
1160 // create an optimized horizontal scaling routine
1161
1162 //code fragment
1163
1164 asm volatile(
1165 "jmp 9f \n\t"
1166 // Begin
1167 "0: \n\t"
b7dc6f66
MN
1168 "movq (%%edx, %%eax), %%mm3 \n\t"
1169 "movd (%%ecx, %%esi), %%mm0 \n\t"
1170 "movd 1(%%ecx, %%esi), %%mm1 \n\t"
1171 "punpcklbw %%mm7, %%mm1 \n\t"
1172 "punpcklbw %%mm7, %%mm0 \n\t"
28bf81c9
MN
1173 "pshufw $0xFF, %%mm1, %%mm1 \n\t"
1174 "1: \n\t"
28bf81c9
MN
1175 "pshufw $0xFF, %%mm0, %%mm0 \n\t"
1176 "2: \n\t"
28bf81c9 1177 "psubw %%mm1, %%mm0 \n\t"
b7dc6f66 1178 "movl 8(%%ebx, %%eax), %%esi \n\t"
28bf81c9 1179 "pmullw %%mm3, %%mm0 \n\t"
28bf81c9
MN
1180 "psllw $7, %%mm1 \n\t"
1181 "paddw %%mm1, %%mm0 \n\t"
1182
1183 "movq %%mm0, (%%edi, %%eax) \n\t"
1184
1185 "addl $8, %%eax \n\t"
1186 // End
1187 "9: \n\t"
1188// "int $3\n\t"
1189 "leal 0b, %0 \n\t"
1190 "leal 1b, %1 \n\t"
1191 "leal 2b, %2 \n\t"
1192 "decl %1 \n\t"
1193 "decl %2 \n\t"
1194 "subl %0, %1 \n\t"
1195 "subl %0, %2 \n\t"
1196 "leal 9b, %3 \n\t"
1197 "subl %0, %3 \n\t"
b7dc6f66
MN
1198
1199
1200 :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),
1201 "=r" (fragmentLengthA)
28bf81c9
MN
1202 );
1203
b7dc6f66
MN
1204 asm volatile(
1205 "jmp 9f \n\t"
1206 // Begin
1207 "0: \n\t"
1208 "movq (%%edx, %%eax), %%mm3 \n\t"
1209 "movd (%%ecx, %%esi), %%mm0 \n\t"
1210 "punpcklbw %%mm7, %%mm0 \n\t"
1211 "pshufw $0xFF, %%mm0, %%mm1 \n\t"
1212 "1: \n\t"
1213 "pshufw $0xFF, %%mm0, %%mm0 \n\t"
1214 "2: \n\t"
1215 "psubw %%mm1, %%mm0 \n\t"
1216 "movl 8(%%ebx, %%eax), %%esi \n\t"
1217 "pmullw %%mm3, %%mm0 \n\t"
1218 "psllw $7, %%mm1 \n\t"
1219 "paddw %%mm1, %%mm0 \n\t"
1220
1221 "movq %%mm0, (%%edi, %%eax) \n\t"
28bf81c9 1222
b7dc6f66
MN
1223 "addl $8, %%eax \n\t"
1224 // End
1225 "9: \n\t"
1226// "int $3\n\t"
1227 "leal 0b, %0 \n\t"
1228 "leal 1b, %1 \n\t"
1229 "leal 2b, %2 \n\t"
1230 "decl %1 \n\t"
1231 "decl %2 \n\t"
1232 "subl %0, %1 \n\t"
1233 "subl %0, %2 \n\t"
1234 "leal 9b, %3 \n\t"
1235 "subl %0, %3 \n\t"
1236
1237
1238 :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),
1239 "=r" (fragmentLengthB)
1240 );
1241
1242 xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers
1243 fragmentPos=0;
1244
1245 for(i=0; i<dstW/numSplits; i++)
28bf81c9
MN
1246 {
1247 int xx=xpos>>16;
1248
1249 if((i&3) == 0)
1250 {
1251 int a=0;
1252 int b=((xpos+xInc)>>16) - xx;
1253 int c=((xpos+xInc*2)>>16) - xx;
1254 int d=((xpos+xInc*3)>>16) - xx;
1255
b7dc6f66
MN
1256 filter[i ] = (( xpos & 0xFFFF) ^ 0xFFFF)>>9;
1257 filter[i+1] = (((xpos+xInc ) & 0xFFFF) ^ 0xFFFF)>>9;
1258 filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;
1259 filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;
1260 filterPos[i/2]= xx;
1261
1262 if(d+1<4)
1263 {
1264 int maxShift= 3-(d+1);
1265 int shift=0;
1266
1267 memcpy(funnyCode + fragmentPos, fragmentB, fragmentLengthB);
1268
1269 funnyCode[fragmentPos + imm8OfPShufW1B]=
1270 (a+1) | ((b+1)<<2) | ((c+1)<<4) | ((d+1)<<6);
1271 funnyCode[fragmentPos + imm8OfPShufW2B]=
1272 a | (b<<2) | (c<<4) | (d<<6);
1273
1274 if(i+3>=dstW) shift=maxShift; //avoid overread
1275 else if((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align
1276
1277 if(shift && i>=shift)
1278 {
1279 funnyCode[fragmentPos + imm8OfPShufW1B]+= 0x55*shift;
1280 funnyCode[fragmentPos + imm8OfPShufW2B]+= 0x55*shift;
1281 filterPos[i/2]-=shift;
1282 }
1283
1284 fragmentPos+= fragmentLengthB;
1285 }
1286 else
1287 {
1288 int maxShift= 3-d;
1289 int shift=0;
1290
1291 memcpy(funnyCode + fragmentPos, fragmentA, fragmentLengthA);
28bf81c9 1292
b7dc6f66
MN
1293 funnyCode[fragmentPos + imm8OfPShufW1A]=
1294 funnyCode[fragmentPos + imm8OfPShufW2A]=
1295 a | (b<<2) | (c<<4) | (d<<6);
28bf81c9 1296
b7dc6f66
MN
1297 if(i+4>=dstW) shift=maxShift; //avoid overread
1298 else if((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //partial align
28bf81c9 1299
b7dc6f66
MN
1300 if(shift && i>=shift)
1301 {
1302 funnyCode[fragmentPos + imm8OfPShufW1A]+= 0x55*shift;
1303 funnyCode[fragmentPos + imm8OfPShufW2A]+= 0x55*shift;
1304 filterPos[i/2]-=shift;
1305 }
1306
1307 fragmentPos+= fragmentLengthA;
1308 }
1309
1310 funnyCode[fragmentPos]= RET;
28bf81c9
MN
1311 }
1312 xpos+=xInc;
1313 }
b7dc6f66 1314 filterPos[i/2]= xpos>>16; // needed to jump to the next part
28bf81c9
MN
1315}
1316#endif // ARCH_X86
1317
28bf81c9 1318static void globalInit(){
31190492
A
1319 // generating tables:
1320 int i;
c1b0bfb4
MN
1321 for(i=0; i<768; i++){
1322 int c= MIN(MAX(i-256, 0), 255);
1323 clip_table[i]=c;
b18ea156 1324 }
516b1f82 1325}
c1b0bfb4 1326
516b1f82
MN
1327static SwsFunc getSwsFunc(int flags){
1328
28bf81c9 1329#ifdef RUNTIME_CPUDETECT
516b1f82 1330#ifdef ARCH_X86
28bf81c9 1331 // ordered per speed fasterst first
516b1f82
MN
1332 if(flags & SWS_CPU_CAPS_MMX2)
1333 return swScale_MMX2;
1334 else if(flags & SWS_CPU_CAPS_3DNOW)
1335 return swScale_3DNow;
1336 else if(flags & SWS_CPU_CAPS_MMX)
1337 return swScale_MMX;
28bf81c9 1338 else
516b1f82 1339 return swScale_C;
28bf81c9
MN
1340
1341#else
a2faa401
RD
1342#ifdef ARCH_POWERPC
1343 if(flags & SWS_CPU_CAPS_ALTIVEC)
1344 return swScale_altivec;
1345 else
1346 return swScale_C;
1347#endif
516b1f82 1348 return swScale_C;
28bf81c9
MN
1349#endif
1350#else //RUNTIME_CPUDETECT
1351#ifdef HAVE_MMX2
516b1f82 1352 return swScale_MMX2;
28bf81c9 1353#elif defined (HAVE_3DNOW)
516b1f82 1354 return swScale_3DNow;
28bf81c9 1355#elif defined (HAVE_MMX)
516b1f82 1356 return swScale_MMX;
a2faa401
RD
1357#elif defined (HAVE_ALTIVEC)
1358 return swScale_altivec;
28bf81c9 1359#else
516b1f82 1360 return swScale_C;
28bf81c9
MN
1361#endif
1362#endif //!RUNTIME_CPUDETECT
31190492 1363}
7630f2e0 1364
d4e24275 1365static int PlanarToNV12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
0d9f3d85
A
1366 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1367 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1368 /* Copy Y plane */
1369 if(dstStride[0]==srcStride[0])
1370 memcpy(dst, src[0], srcSliceH*dstStride[0]);
1371 else
1372 {
1373 int i;
1374 uint8_t *srcPtr= src[0];
1375 uint8_t *dstPtr= dst;
1376 for(i=0; i<srcSliceH; i++)
1377 {
1378 memcpy(dstPtr, srcPtr, srcStride[0]);
1379 srcPtr+= srcStride[0];
1380 dstPtr+= dstStride[0];
1381 }
1382 }
1383 dst = dstParam[1] + dstStride[1]*srcSliceY;
fccb9b2b
MN
1384 interleaveBytes( src[1],src[2],dst,c->srcW,srcSliceH,srcStride[1],srcStride[2],dstStride[0] );
1385
d4e24275 1386 return srcSliceH;
0d9f3d85
A
1387}
1388
d4e24275 1389static int PlanarToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
0d9f3d85
A
1390 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1391 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1392
fccb9b2b
MN
1393 yv12toyuy2( src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0] );
1394
d4e24275 1395 return srcSliceH;
0d9f3d85
A
1396}
1397
caeaabe7
AB
1398static int PlanarToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1399 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1400 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1401
1402 yv12touyvy( src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0] );
1403
1404 return srcSliceH;
1405}
1406
e09d12f4 1407/* {RGB,BGR}{15,16,24,32} -> {RGB,BGR}{15,16,24,32} */
d4e24275 1408static int rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
e09d12f4
MN
1409 int srcSliceH, uint8_t* dst[], int dstStride[]){
1410 const int srcFormat= c->srcFormat;
1411 const int dstFormat= c->dstFormat;
1412 const int srcBpp= ((srcFormat&0xFF) + 7)>>3;
1413 const int dstBpp= ((dstFormat&0xFF) + 7)>>3;
1414 const int srcId= (srcFormat&0xFF)>>2; // 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8
1415 const int dstId= (dstFormat&0xFF)>>2;
1416 void (*conv)(const uint8_t *src, uint8_t *dst, unsigned src_size)=NULL;
1417
1418 /* BGR -> BGR */
20380eb8
MN
1419 if( (isBGR(srcFormat) && isBGR(dstFormat))
1420 || (isRGB(srcFormat) && isRGB(dstFormat))){
e09d12f4
MN
1421 switch(srcId | (dstId<<4)){
1422 case 0x34: conv= rgb16to15; break;
1423 case 0x36: conv= rgb24to15; break;
1424 case 0x38: conv= rgb32to15; break;
1425 case 0x43: conv= rgb15to16; break;
1426 case 0x46: conv= rgb24to16; break;
1427 case 0x48: conv= rgb32to16; break;
1428 case 0x63: conv= rgb15to24; break;
1429 case 0x64: conv= rgb16to24; break;
1430 case 0x68: conv= rgb32to24; break;
1431 case 0x83: conv= rgb15to32; break;
1432 case 0x84: conv= rgb16to32; break;
1433 case 0x86: conv= rgb24to32; break;
1434 default: MSG_ERR("swScaler: internal error %s -> %s converter\n",
1435 vo_format_name(srcFormat), vo_format_name(dstFormat)); break;
b935781b 1436 }
20380eb8
MN
1437 }else if( (isBGR(srcFormat) && isRGB(dstFormat))
1438 || (isRGB(srcFormat) && isBGR(dstFormat))){
e09d12f4
MN
1439 switch(srcId | (dstId<<4)){
1440 case 0x33: conv= rgb15tobgr15; break;
1441 case 0x34: conv= rgb16tobgr15; break;
1442 case 0x36: conv= rgb24tobgr15; break;
1443 case 0x38: conv= rgb32tobgr15; break;
1444 case 0x43: conv= rgb15tobgr16; break;
1445 case 0x44: conv= rgb16tobgr16; break;
1446 case 0x46: conv= rgb24tobgr16; break;
1447 case 0x48: conv= rgb32tobgr16; break;
1448 case 0x63: conv= rgb15tobgr24; break;
1449 case 0x64: conv= rgb16tobgr24; break;
1450 case 0x66: conv= rgb24tobgr24; break;
1451 case 0x68: conv= rgb32tobgr24; break;
1452 case 0x83: conv= rgb15tobgr32; break;
1453 case 0x84: conv= rgb16tobgr32; break;
1454 case 0x86: conv= rgb24tobgr32; break;
1455 case 0x88: conv= rgb32tobgr32; break;
1456 default: MSG_ERR("swScaler: internal error %s -> %s converter\n",
1457 vo_format_name(srcFormat), vo_format_name(dstFormat)); break;
0d9f3d85 1458 }
20380eb8
MN
1459 }else{
1460 MSG_ERR("swScaler: internal error %s -> %s converter\n",
1461 vo_format_name(srcFormat), vo_format_name(dstFormat));
e09d12f4 1462 }
20380eb8 1463
e09d12f4
MN
1464 if(dstStride[0]*srcBpp == srcStride[0]*dstBpp)
1465 conv(src[0], dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);
0d9f3d85
A
1466 else
1467 {
1468 int i;
1469 uint8_t *srcPtr= src[0];
1470 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1471
1472 for(i=0; i<srcSliceH; i++)
1473 {
e09d12f4 1474 conv(srcPtr, dstPtr, c->srcW*srcBpp);
0d9f3d85
A
1475 srcPtr+= srcStride[0];
1476 dstPtr+= dstStride[0];
1477 }
1478 }
d4e24275 1479 return srcSliceH;
0d9f3d85
A
1480}
1481
d4e24275 1482static int bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
ec22603f
MN
1483 int srcSliceH, uint8_t* dst[], int dstStride[]){
1484
1485 rgb24toyv12(
1486 src[0],
1487 dst[0]+ srcSliceY *dstStride[0],
1488 dst[1]+(srcSliceY>>1)*dstStride[1],
1489 dst[2]+(srcSliceY>>1)*dstStride[2],
1490 c->srcW, srcSliceH,
1491 dstStride[0], dstStride[1], srcStride[0]);
d4e24275 1492 return srcSliceH;
ec22603f
MN
1493}
1494
d4e24275 1495static int yvu9toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
b241cbf2
MN
1496 int srcSliceH, uint8_t* dst[], int dstStride[]){
1497 int i;
1498
1499 /* copy Y */
1500 if(srcStride[0]==dstStride[0])
1501 memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);
1502 else{
1503 uint8_t *srcPtr= src[0];
1504 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1505
1506 for(i=0; i<srcSliceH; i++)
1507 {
1508 memcpy(dstPtr, srcPtr, c->srcW);
1509 srcPtr+= srcStride[0];
1510 dstPtr+= dstStride[0];
1511 }
1512 }
1513
1514 if(c->dstFormat==IMGFMT_YV12){
1515 planar2x(src[1], dst[1], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[1]);
1516 planar2x(src[2], dst[2], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[2]);
1517 }else{
1518 planar2x(src[1], dst[2], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[2]);
1519 planar2x(src[2], dst[1], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[1]);
1520 }
d4e24275 1521 return srcSliceH;
b241cbf2
MN
1522}
1523
44c1035c
MN
1524/**
1525 * bring pointers in YUV order instead of YVU
1526 */
fccb9b2b
MN
1527static inline void sws_orderYUV(int format, uint8_t * sortedP[], int sortedStride[], uint8_t * p[], int stride[]){
1528 if(format == IMGFMT_YV12 || format == IMGFMT_YVU9
d80e2fa2 1529 || format == IMGFMT_444P || format == IMGFMT_422P || format == IMGFMT_411P){
44c1035c 1530 sortedP[0]= p[0];
fccb9b2b
MN
1531 sortedP[1]= p[2];
1532 sortedP[2]= p[1];
c7a810cc 1533 sortedStride[0]= stride[0];
fccb9b2b
MN
1534 sortedStride[1]= stride[2];
1535 sortedStride[2]= stride[1];
44c1035c 1536 }
a4c90ea3 1537 else if(isPacked(format) || isGray(format) || format == IMGFMT_Y8)
44c1035c
MN
1538 {
1539 sortedP[0]= p[0];
1540 sortedP[1]=
1541 sortedP[2]= NULL;
c7a810cc 1542 sortedStride[0]= stride[0];
44c1035c
MN
1543 sortedStride[1]=
1544 sortedStride[2]= 0;
1545 }
fccb9b2b 1546 else if(format == IMGFMT_I420 || format == IMGFMT_IYUV)
44c1035c
MN
1547 {
1548 sortedP[0]= p[0];
fccb9b2b
MN
1549 sortedP[1]= p[1];
1550 sortedP[2]= p[2];
c7a810cc 1551 sortedStride[0]= stride[0];
fccb9b2b
MN
1552 sortedStride[1]= stride[1];
1553 sortedStride[2]= stride[2];
e09d12f4
MN
1554 }else{
1555 MSG_ERR("internal error in orderYUV\n");
44c1035c
MN
1556 }
1557}
b935781b 1558
b6654a54 1559/* unscaled copy like stuff (assumes nearly identical formats) */
3e499f53
MN
1560static int simpleCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1561 int srcSliceH, uint8_t* dst[], int dstStride[]){
b6654a54
MN
1562
1563 if(isPacked(c->srcFormat))
1564 {
1565 if(dstStride[0]==srcStride[0])
1566 memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);
1567 else
1568 {
1569 int i;
1570 uint8_t *srcPtr= src[0];
1571 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
a861d4d7
MN
1572 int length=0;
1573
1574 /* universal length finder */
9bd8bd1a
MN
1575 while(length+c->srcW <= ABS(dstStride[0])
1576 && length+c->srcW <= ABS(srcStride[0])) length+= c->srcW;
a861d4d7 1577 ASSERT(length!=0);
b6654a54
MN
1578
1579 for(i=0; i<srcSliceH; i++)
1580 {
1581 memcpy(dstPtr, srcPtr, length);
1582 srcPtr+= srcStride[0];
1583 dstPtr+= dstStride[0];
1584 }
1585 }
1586 }
1587 else
44c1035c 1588 { /* Planar YUV or gray */
b6654a54
MN
1589 int plane;
1590 for(plane=0; plane<3; plane++)
1591 {
e616aa93
MN
1592 int length= plane==0 ? c->srcW : -((-c->srcW )>>c->chrDstHSubSample);
1593 int y= plane==0 ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);
1594 int height= plane==0 ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);
44c1035c
MN
1595
1596 if((isGray(c->srcFormat) || isGray(c->dstFormat)) && plane>0)
0d9f3d85 1597 {
44c1035c 1598 if(!isGray(c->dstFormat))
e616aa93 1599 memset(dst[plane], 128, dstStride[plane]*height);
0d9f3d85 1600 }
b6654a54
MN
1601 else
1602 {
44c1035c
MN
1603 if(dstStride[plane]==srcStride[plane])
1604 memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);
1605 else
b6654a54 1606 {
44c1035c
MN
1607 int i;
1608 uint8_t *srcPtr= src[plane];
1609 uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;
1610 for(i=0; i<height; i++)
1611 {
1612 memcpy(dstPtr, srcPtr, length);
1613 srcPtr+= srcStride[plane];
1614 dstPtr+= dstStride[plane];
1615 }
b6654a54
MN
1616 }
1617 }
1618 }
1619 }
d4e24275 1620 return srcSliceH;
37079906 1621}
28bf81c9 1622
44c1035c 1623static int remove_dup_fourcc(int fourcc)
0d9f3d85
A
1624{
1625 switch(fourcc)
1626 {
fccb9b2b
MN
1627 case IMGFMT_I420:
1628 case IMGFMT_IYUV: return IMGFMT_YV12;
0d9f3d85 1629 case IMGFMT_Y8 : return IMGFMT_Y800;
0c51ef97 1630 case IMGFMT_IF09: return IMGFMT_YVU9;
0d9f3d85
A
1631 default: return fourcc;
1632 }
1633}
1634
c7a810cc
MN
1635static void getSubSampleFactors(int *h, int *v, int format){
1636 switch(format){
7322a67c 1637 case IMGFMT_UYVY:
c7a810cc
MN
1638 case IMGFMT_YUY2:
1639 *h=1;
1640 *v=0;
1641 break;
1642 case IMGFMT_YV12:
e616aa93 1643 case IMGFMT_Y800: //FIXME remove after different subsamplings are fully implemented
c7a810cc
MN
1644 *h=1;
1645 *v=1;
1646 break;
1647 case IMGFMT_YVU9:
1648 *h=2;
1649 *v=2;
1650 break;
d80e2fa2
MN
1651 case IMGFMT_444P:
1652 *h=0;
1653 *v=0;
1654 break;
1655 case IMGFMT_422P:
1656 *h=1;
1657 *v=0;
1658 break;
1659 case IMGFMT_411P:
1660 *h=2;
1661 *v=0;
1662 break;
c7a810cc
MN
1663 default:
1664 *h=0;
1665 *v=0;
1666 break;
1667 }
1668}
1669
5427e242
MN
1670static uint16_t roundToInt16(int64_t f){
1671 int r= (f + (1<<15))>>16;
1672 if(r<-0x7FFF) return 0x8000;
1673 else if(r> 0x7FFF) return 0x7FFF;
1674 else return r;
0481412a
MN
1675}
1676
1677/**
5427e242 1678 * @param inv_table the yuv2rgb coeffs, normally Inverse_Table_6_9[x]
0481412a 1679 * @param fullRange if 1 then the luma range is 0..255 if 0 its 16..235
5427e242 1680 * @return -1 if not supported
0481412a 1681 */
5427e242
MN
1682int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation){
1683 int64_t crv = inv_table[0];
1684 int64_t cbu = inv_table[1];
1685 int64_t cgu = -inv_table[2];
1686 int64_t cgv = -inv_table[3];
1687 int64_t cy = 1<<16;
1688 int64_t oy = 0;
1689
1690 if(isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;
1691 memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);
1692 memcpy(c->dstColorspaceTable, table, sizeof(int)*4);
1693
1694 c->brightness= brightness;
1695 c->contrast = contrast;
1696 c->saturation= saturation;
1697 c->srcRange = srcRange;
1698 c->dstRange = dstRange;
0481412a
MN
1699
1700 c->uOffset= 0x0400040004000400LL;
1701 c->vOffset= 0x0400040004000400LL;
1702
5427e242
MN
1703 if(!srcRange){
1704 cy= (cy*255) / 219;
1705 oy= 16<<16;
0481412a
MN
1706 }
1707
5427e242
MN
1708 cy = (cy *contrast )>>16;
1709 crv= (crv*contrast * saturation)>>32;
1710 cbu= (cbu*contrast * saturation)>>32;
1711 cgu= (cgu*contrast * saturation)>>32;
1712 cgv= (cgv*contrast * saturation)>>32;
0481412a 1713
5427e242 1714 oy -= 256*brightness;
0481412a
MN
1715
1716 c->yCoeff= roundToInt16(cy *8192) * 0x0001000100010001ULL;
1717 c->vrCoeff= roundToInt16(crv*8192) * 0x0001000100010001ULL;
1718 c->ubCoeff= roundToInt16(cbu*8192) * 0x0001000100010001ULL;
1719 c->vgCoeff= roundToInt16(cgv*8192) * 0x0001000100010001ULL;
1720 c->ugCoeff= roundToInt16(cgu*8192) * 0x0001000100010001ULL;
1721 c->yOffset= roundToInt16(oy * 8) * 0x0001000100010001ULL;
5427e242
MN
1722
1723 yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);
1724 //FIXME factorize
a31de956
MN
1725
1726#ifdef HAVE_ALTIVEC
1727 yuv2rgb_altivec_init_tables (c, inv_table);
1728#endif
5427e242
MN
1729 return 0;
1730}
1731
1732/**
1733 * @return -1 if not supported
1734 */
1735int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation){
1736 if(isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;
1737
1738 *inv_table = c->srcColorspaceTable;
1739 *table = c->dstColorspaceTable;
1740 *srcRange = c->srcRange;
1741 *dstRange = c->dstRange;
1742 *brightness= c->brightness;
1743 *contrast = c->contrast;
1744 *saturation= c->saturation;
1745
1746 return 0;
0481412a
MN
1747}
1748
fccb9b2b 1749SwsContext *sws_getContext(int srcW, int srcH, int origSrcFormat, int dstW, int dstH, int origDstFormat, int flags,
66d1cdb6 1750 SwsFilter *srcFilter, SwsFilter *dstFilter, double *param){
28bf81c9 1751
28bf81c9
MN
1752 SwsContext *c;
1753 int i;
ec62c38f 1754 int usesVFilter, usesHFilter;
e09d12f4 1755 int unscaled, needsDither;
fccb9b2b 1756 int srcFormat, dstFormat;
c7f822d9 1757 SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};
5cebb24b 1758#ifdef ARCH_X86
516b1f82 1759 if(flags & SWS_CPU_CAPS_MMX)
5cebb24b
MN
1760 asm volatile("emms\n\t"::: "memory");
1761#endif
516b1f82
MN
1762
1763#ifndef RUNTIME_CPUDETECT //ensure that the flags match the compiled variant if cpudetect is off
a2faa401 1764 flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC);
516b1f82
MN
1765#ifdef HAVE_MMX2
1766 flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;
1767#elif defined (HAVE_3DNOW)
1768 flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;
1769#elif defined (HAVE_MMX)
1770 flags |= SWS_CPU_CAPS_MMX;
a2faa401
RD
1771#elif defined (HAVE_ALTIVEC)
1772 flags |= SWS_CPU_CAPS_ALTIVEC;
516b1f82
MN
1773#endif
1774#endif
1775 if(clip_table[512] != 255) globalInit();
700490a4 1776 if(rgb15to16 == NULL) sws_rgb2rgb_init(flags);
fccb9b2b 1777
77a416e8 1778 /* avoid duplicate Formats, so we don't need to check to much */
fccb9b2b
MN
1779 srcFormat = remove_dup_fourcc(origSrcFormat);
1780 dstFormat = remove_dup_fourcc(origDstFormat);
44c1035c
MN
1781
1782 unscaled = (srcW == dstW && srcH == dstH);
e09d12f4
MN
1783 needsDither= (isBGR(dstFormat) || isRGB(dstFormat))
1784 && (dstFormat&0xFF)<24
1785 && ((dstFormat&0xFF)<(srcFormat&0xFF) || (!(isRGB(srcFormat) || isBGR(srcFormat))));
44c1035c
MN
1786
1787 if(!isSupportedIn(srcFormat))
b81cf274 1788 {
44c1035c
MN
1789 MSG_ERR("swScaler: %s is not supported as input format\n", vo_format_name(srcFormat));
1790 return NULL;
1791 }
1792 if(!isSupportedOut(dstFormat))
1793 {
1794 MSG_ERR("swScaler: %s is not supported as output format\n", vo_format_name(dstFormat));
1795 return NULL;
b81cf274 1796 }
44c1035c 1797
28bf81c9 1798 /* sanity check */
b81cf274
MN
1799 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
1800 {
0d9f3d85 1801 MSG_ERR("swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",
b81cf274
MN
1802 srcW, srcH, dstW, dstH);
1803 return NULL;
1804 }
28bf81c9 1805
c7f822d9
MN
1806 if(!dstFilter) dstFilter= &dummyFilter;
1807 if(!srcFilter) srcFilter= &dummyFilter;
1808
28bf81c9 1809 c= memalign(64, sizeof(SwsContext));
c7f822d9 1810 memset(c, 0, sizeof(SwsContext));
28bf81c9
MN
1811
1812 c->srcW= srcW;
1813 c->srcH= srcH;
1814 c->dstW= dstW;
1815 c->dstH= dstH;
5521b193
MN
1816 c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;
1817 c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;
28bf81c9
MN
1818 c->flags= flags;
1819 c->dstFormat= dstFormat;
1820 c->srcFormat= srcFormat;
fccb9b2b
MN
1821 c->origDstFormat= origDstFormat;
1822 c->origSrcFormat= origSrcFormat;
379a2036 1823 c->vRounder= 4* 0x0001000100010001ULL;
28bf81c9 1824
ec62c38f
MN
1825 usesHFilter= usesVFilter= 0;
1826 if(dstFilter->lumV!=NULL && dstFilter->lumV->length>1) usesVFilter=1;
1827 if(dstFilter->lumH!=NULL && dstFilter->lumH->length>1) usesHFilter=1;
1828 if(dstFilter->chrV!=NULL && dstFilter->chrV->length>1) usesVFilter=1;
1829 if(dstFilter->chrH!=NULL && dstFilter->chrH->length>1) usesHFilter=1;
1830 if(srcFilter->lumV!=NULL && srcFilter->lumV->length>1) usesVFilter=1;
1831 if(srcFilter->lumH!=NULL && srcFilter->lumH->length>1) usesHFilter=1;
1832 if(srcFilter->chrV!=NULL && srcFilter->chrV->length>1) usesVFilter=1;
1833 if(srcFilter->chrH!=NULL && srcFilter->chrH->length>1) usesHFilter=1;
e616aa93
MN
1834
1835 getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);
1836 getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);
1837
1838 // reuse chroma for 2 pixles rgb/bgr unless user wants full chroma interpolation
1839 if((isBGR(dstFormat) || isRGB(dstFormat)) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;
1840
5859233b
MN
1841 // drop some chroma lines if the user wants it
1842 c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;
1843 c->chrSrcVSubSample+= c->vChrDrop;
e616aa93 1844
5859233b 1845 // drop every 2. pixel for chroma calculation unless user wants full chroma
e616aa93
MN
1846 if((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP))
1847 c->chrSrcHSubSample=1;
1848
66d1cdb6
MN
1849 if(param){
1850 c->param[0] = param[0];
1851 c->param[1] = param[1];
1852 }else{
1853 c->param[0] =
1854 c->param[1] = SWS_PARAM_DEFAULT;
1855 }
1856
e616aa93
MN
1857 c->chrIntHSubSample= c->chrDstHSubSample;
1858 c->chrIntVSubSample= c->chrSrcVSubSample;
5427e242 1859
e616aa93
MN
1860 // note the -((-x)>>y) is so that we allways round toward +inf
1861 c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);
1862 c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);
1863 c->chrDstW= -((-dstW) >> c->chrDstHSubSample);
1864 c->chrDstH= -((-dstH) >> c->chrDstVSubSample);
5427e242
MN
1865
1866 sws_setColorspaceDetails(c, Inverse_Table_6_9[SWS_CS_DEFAULT], 0, Inverse_Table_6_9[SWS_CS_DEFAULT] /* FIXME*/, 0, 0, 1<<16, 1<<16);
cf7d1c1a 1867
b935781b 1868 /* unscaled special Cases */
ec62c38f 1869 if(unscaled && !usesHFilter && !usesVFilter)
37079906 1870 {
0d9f3d85 1871 /* yv12_to_nv12 */
fccb9b2b 1872 if(srcFormat == IMGFMT_YV12 && dstFormat == IMGFMT_NV12)
0d9f3d85
A
1873 {
1874 c->swScale= PlanarToNV12Wrapper;
0d9f3d85 1875 }
37079906 1876 /* yuv2bgr */
fccb9b2b 1877 if((srcFormat==IMGFMT_YV12 || srcFormat==IMGFMT_422P) && (isBGR(dstFormat) || isRGB(dstFormat)))
37079906 1878 {
5427e242 1879 c->swScale= yuv2rgb_get_func_ptr(c);
37079906 1880 }
b241cbf2 1881
fccb9b2b 1882 if( srcFormat==IMGFMT_YVU9 && dstFormat==IMGFMT_YV12 )
b241cbf2
MN
1883 {
1884 c->swScale= yvu9toyv12Wrapper;
b241cbf2
MN
1885 }
1886
ec22603f
MN
1887 /* bgr24toYV12 */
1888 if(srcFormat==IMGFMT_BGR24 && dstFormat==IMGFMT_YV12)
ec22603f 1889 c->swScale= bgr24toyv12Wrapper;
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MN
1890
1891 /* rgb/bgr -> rgb/bgr (no dither needed forms) */
1892 if( (isBGR(srcFormat) || isRGB(srcFormat))
1893 && (isBGR(dstFormat) || isRGB(dstFormat))
1894 && !needsDither)
1895 c->swScale= rgb2rgbWrapper;
1896
1897 /* LQ converters if -sws 0 or -sws 4*/
1898 if(c->flags&(SWS_FAST_BILINEAR|SWS_POINT)){
1899 /* rgb/bgr -> rgb/bgr (dither needed forms) */
1900 if( (isBGR(srcFormat) || isRGB(srcFormat))
1901 && (isBGR(dstFormat) || isRGB(dstFormat))
1902 && needsDither)
1903 c->swScale= rgb2rgbWrapper;
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MN
1904
1905 /* yv12_to_yuy2 */
caeaabe7
AB
1906 if(srcFormat == IMGFMT_YV12 &&
1907 (dstFormat == IMGFMT_YUY2 || dstFormat == IMGFMT_UYVY))
2ce486d8 1908 {
caeaabe7
AB
1909 if (dstFormat == IMGFMT_YUY2)
1910 c->swScale= PlanarToYuy2Wrapper;
1911 else
1912 c->swScale= PlanarToUyvyWrapper;
2ce486d8 1913 }
e09d12f4 1914 }
ec22603f 1915
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RD
1916#ifdef HAVE_ALTIVEC
1917 if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&
1918 ((srcFormat == IMGFMT_YV12 &&
1919 (dstFormat == IMGFMT_YUY2 || dstFormat == IMGFMT_UYVY)))) {
1920 // unscaled YV12 -> packed YUV, we want speed
1921 if (dstFormat == IMGFMT_YUY2)
1922 c->swScale= yv12toyuy2_unscaled_altivec;
1923 else
1924 c->swScale= yv12touyvy_unscaled_altivec;
1925 }
1926#endif
1927
20380eb8
MN
1928 /* simple copy */
1929 if( srcFormat == dstFormat
20380eb8
MN
1930 || (isPlanarYUV(srcFormat) && isGray(dstFormat))
1931 || (isPlanarYUV(dstFormat) && isGray(srcFormat))
1932 )
1933 {
1934 c->swScale= simpleCopy;
1935 }
1936
e09d12f4 1937 if(c->swScale){
ec22603f 1938 if(flags&SWS_PRINT_INFO)
0d9f3d85 1939 MSG_INFO("SwScaler: using unscaled %s -> %s special converter\n",
ec22603f
MN
1940 vo_format_name(srcFormat), vo_format_name(dstFormat));
1941 return c;
1942 }
37079906
MN
1943 }
1944
516b1f82 1945 if(flags & SWS_CPU_CAPS_MMX2)
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MN
1946 {
1947 c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;
1948 if(!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR))
1949 {
1950 if(flags&SWS_PRINT_INFO)
0d9f3d85 1951 MSG_INFO("SwScaler: output Width is not a multiple of 32 -> no MMX2 scaler\n");
28bf81c9 1952 }
ec62c38f 1953 if(usesHFilter) c->canMMX2BeUsed=0;
28bf81c9
MN
1954 }
1955 else
1956 c->canMMX2BeUsed=0;
1957
1e621b18
MN
1958 c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;
1959 c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;
1960
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MN
1961 // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst
1962 // but only for the FAST_BILINEAR mode otherwise do correct scaling
1963 // n-2 is the last chrominance sample available
1964 // this is not perfect, but noone shuld notice the difference, the more correct variant
1965 // would be like the vertical one, but that would require some special code for the
1966 // first and last pixel
1967 if(flags&SWS_FAST_BILINEAR)
1968 {
1e621b18
MN
1969 if(c->canMMX2BeUsed)
1970 {
1971 c->lumXInc+= 20;
1972 c->chrXInc+= 20;
1973 }
77a416e8 1974 //we don't use the x86asm scaler if mmx is available
516b1f82 1975 else if(flags & SWS_CPU_CAPS_MMX)
1e621b18
MN
1976 {
1977 c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;
1978 c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;
1979 }
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1980 }
1981
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MN
1982 /* precalculate horizontal scaler filter coefficients */
1983 {
8c266f0c
RD
1984 const int filterAlign=
1985 (flags & SWS_CPU_CAPS_MMX) ? 4 :
1986 (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :
1987 1;
28bf81c9 1988
c7f822d9 1989 initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,
81a571a8
MN
1990 srcW , dstW, filterAlign, 1<<14,
1991 (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC) : flags,
66d1cdb6 1992 srcFilter->lumH, dstFilter->lumH, c->param);
c7f822d9 1993 initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,
81a571a8
MN
1994 c->chrSrcW, c->chrDstW, filterAlign, 1<<14,
1995 (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
66d1cdb6 1996 srcFilter->chrH, dstFilter->chrH, c->param);
28bf81c9
MN
1997
1998#ifdef ARCH_X86
77a416e8 1999// can't downscale !!!
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MN
2000 if(c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR))
2001 {
b7dc6f66
MN
2002 c->lumMmx2Filter = (int16_t*)memalign(8, (dstW /8+8)*sizeof(int16_t));
2003 c->chrMmx2Filter = (int16_t*)memalign(8, (c->chrDstW /4+8)*sizeof(int16_t));
2004 c->lumMmx2FilterPos= (int32_t*)memalign(8, (dstW /2/8+8)*sizeof(int32_t));
2005 c->chrMmx2FilterPos= (int32_t*)memalign(8, (c->chrDstW/2/4+8)*sizeof(int32_t));
2006
2007 initMMX2HScaler( dstW, c->lumXInc, c->funnyYCode , c->lumMmx2Filter, c->lumMmx2FilterPos, 8);
2008 initMMX2HScaler(c->chrDstW, c->chrXInc, c->funnyUVCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);
28bf81c9
MN
2009 }
2010#endif
2011 } // Init Horizontal stuff
2012
2013
2014
2015 /* precalculate vertical scaler filter coefficients */
8c266f0c
RD
2016 {
2017 const int filterAlign=
2018 (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :
2019 1;
2020
2021 initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,
2022 srcH , dstH, filterAlign, (1<<12)-4,
2023 (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC) : flags,
66d1cdb6 2024 srcFilter->lumV, dstFilter->lumV, c->param);
8c266f0c
RD
2025 initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,
2026 c->chrSrcH, c->chrDstH, filterAlign, (1<<12)-4,
2027 (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
66d1cdb6 2028 srcFilter->chrV, dstFilter->chrV, c->param);
8c266f0c 2029 }
28bf81c9 2030
77a416e8 2031 // Calculate Buffer Sizes so that they won't run out while handling these damn slices
28bf81c9
MN
2032 c->vLumBufSize= c->vLumFilterSize;
2033 c->vChrBufSize= c->vChrFilterSize;
2034 for(i=0; i<dstH; i++)
2035 {
2036 int chrI= i*c->chrDstH / dstH;
2037 int nextSlice= MAX(c->vLumFilterPos[i ] + c->vLumFilterSize - 1,
e616aa93 2038 ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));
c4f1e443
MN
2039
2040 nextSlice>>= c->chrSrcVSubSample;
2041 nextSlice<<= c->chrSrcVSubSample;
28bf81c9
MN
2042 if(c->vLumFilterPos[i ] + c->vLumBufSize < nextSlice)
2043 c->vLumBufSize= nextSlice - c->vLumFilterPos[i ];
e616aa93
MN
2044 if(c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample))
2045 c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI];
28bf81c9
MN
2046 }
2047
2048 // allocate pixbufs (we use dynamic allocation because otherwise we would need to
c7f822d9
MN
2049 c->lumPixBuf= (int16_t**)memalign(4, c->vLumBufSize*2*sizeof(int16_t*));
2050 c->chrPixBuf= (int16_t**)memalign(4, c->vChrBufSize*2*sizeof(int16_t*));
6c7506de 2051 //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)
28bf81c9
MN
2052 for(i=0; i<c->vLumBufSize; i++)
2053 c->lumPixBuf[i]= c->lumPixBuf[i+c->vLumBufSize]= (uint16_t*)memalign(8, 4000);
2054 for(i=0; i<c->vChrBufSize; i++)
2055 c->chrPixBuf[i]= c->chrPixBuf[i+c->vChrBufSize]= (uint16_t*)memalign(8, 8000);
2056
2057 //try to avoid drawing green stuff between the right end and the stride end
2058 for(i=0; i<c->vLumBufSize; i++) memset(c->lumPixBuf[i], 0, 4000);
2059 for(i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, 8000);
2060
2061 ASSERT(c->chrDstH <= dstH)
28bf81c9 2062
28bf81c9
MN
2063 if(flags&SWS_PRINT_INFO)
2064 {
2065#ifdef DITHER1XBPP
5521b193
MN
2066 char *dither= " dithered";
2067#else
2068 char *dither= "";
28bf81c9
MN
2069#endif
2070 if(flags&SWS_FAST_BILINEAR)
0d9f3d85 2071 MSG_INFO("\nSwScaler: FAST_BILINEAR scaler, ");
28bf81c9 2072 else if(flags&SWS_BILINEAR)
0d9f3d85 2073 MSG_INFO("\nSwScaler: BILINEAR scaler, ");
28bf81c9 2074 else if(flags&SWS_BICUBIC)
0d9f3d85 2075 MSG_INFO("\nSwScaler: BICUBIC scaler, ");
1e621b18 2076 else if(flags&SWS_X)
0d9f3d85 2077 MSG_INFO("\nSwScaler: Experimental scaler, ");
ff7ba856 2078 else if(flags&SWS_POINT)
0d9f3d85 2079 MSG_INFO("\nSwScaler: Nearest Neighbor / POINT scaler, ");
d8863d37 2080 else if(flags&SWS_AREA)
0d9f3d85 2081 MSG_INFO("\nSwScaler: Area Averageing scaler, ");
81a571a8 2082 else if(flags&SWS_BICUBLIN)
a86c461c
MN
2083 MSG_INFO("\nSwScaler: luma BICUBIC / chroma BILINEAR scaler, ");
2084 else if(flags&SWS_GAUSS)
2085 MSG_INFO("\nSwScaler: Gaussian scaler, ");
2086 else if(flags&SWS_SINC)
2087 MSG_INFO("\nSwScaler: Sinc scaler, ");
2088 else if(flags&SWS_LANCZOS)
2089 MSG_INFO("\nSwScaler: Lanczos scaler, ");
2090 else if(flags&SWS_SPLINE)
2091 MSG_INFO("\nSwScaler: Bicubic spline scaler, ");
28bf81c9 2092 else
0d9f3d85 2093 MSG_INFO("\nSwScaler: ehh flags invalid?! ");
28bf81c9 2094
0d9f3d85
A
2095 if(dstFormat==IMGFMT_BGR15 || dstFormat==IMGFMT_BGR16)
2096 MSG_INFO("from %s to%s %s ",
2097 vo_format_name(srcFormat), dither, vo_format_name(dstFormat));
2098 else
2099 MSG_INFO("from %s to %s ",
2100 vo_format_name(srcFormat), vo_format_name(dstFormat));
28bf81c9 2101
516b1f82 2102 if(flags & SWS_CPU_CAPS_MMX2)
0d9f3d85 2103 MSG_INFO("using MMX2\n");
516b1f82 2104 else if(flags & SWS_CPU_CAPS_3DNOW)
0d9f3d85 2105 MSG_INFO("using 3DNOW\n");
516b1f82 2106 else if(flags & SWS_CPU_CAPS_MMX)
0d9f3d85 2107 MSG_INFO("using MMX\n");
a2faa401
RD
2108 else if(flags & SWS_CPU_CAPS_ALTIVEC)
2109 MSG_INFO("using AltiVec\n");
2110 else
0d9f3d85 2111 MSG_INFO("using C\n");
28bf81c9
MN
2112 }
2113
516b1f82 2114 if(flags & SWS_PRINT_INFO)
28bf81c9 2115 {
516b1f82 2116 if(flags & SWS_CPU_CAPS_MMX)
28bf81c9
MN
2117 {
2118 if(c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))
0d9f3d85 2119 MSG_V("SwScaler: using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");
28bf81c9
MN
2120 else
2121 {
2122 if(c->hLumFilterSize==4)
0d9f3d85 2123 MSG_V("SwScaler: using 4-tap MMX scaler for horizontal luminance scaling\n");
28bf81c9 2124 else if(c->hLumFilterSize==8)
0d9f3d85 2125 MSG_V("SwScaler: using 8-tap MMX scaler for horizontal luminance scaling\n");
28bf81c9 2126 else
0d9f3d85 2127 MSG_V("SwScaler: using n-tap MMX scaler for horizontal luminance scaling\n");
28bf81c9
MN
2128
2129 if(c->hChrFilterSize==4)
0d9f3d85 2130 MSG_V("SwScaler: using 4-tap MMX scaler for horizontal chrominance scaling\n");
28bf81c9 2131 else if(c->hChrFilterSize==8)
0d9f3d85 2132 MSG_V("SwScaler: using 8-tap MMX scaler for horizontal chrominance scaling\n");
28bf81c9 2133 else
0d9f3d85 2134 MSG_V("SwScaler: using n-tap MMX scaler for horizontal chrominance scaling\n");
28bf81c9
MN
2135 }
2136 }
2137 else
2138 {
2139#ifdef ARCH_X86
0d9f3d85 2140 MSG_V("SwScaler: using X86-Asm scaler for horizontal scaling\n");
28bf81c9
MN
2141#else
2142 if(flags & SWS_FAST_BILINEAR)
0d9f3d85 2143 MSG_V("SwScaler: using FAST_BILINEAR C scaler for horizontal scaling\n");
28bf81c9 2144 else
0d9f3d85 2145 MSG_V("SwScaler: using C scaler for horizontal scaling\n");
28bf81c9
MN
2146#endif
2147 }
6c7506de 2148 if(isPlanarYUV(dstFormat))
28bf81c9
MN
2149 {
2150 if(c->vLumFilterSize==1)
516b1f82 2151 MSG_V("SwScaler: using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
28bf81c9 2152 else
516b1f82 2153 MSG_V("SwScaler: using n-tap %s scaler for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
28bf81c9
MN
2154 }
2155 else
2156 {
2157 if(c->vLumFilterSize==1 && c->vChrFilterSize==2)
0d9f3d85 2158 MSG_V("SwScaler: using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"
516b1f82 2159 "SwScaler: 2-tap scaler for vertical chrominance scaling (BGR)\n",(flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
28bf81c9 2160 else if(c->vLumFilterSize==2 && c->vChrFilterSize==2)
516b1f82 2161 MSG_V("SwScaler: using 2-tap linear %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
28bf81c9 2162 else
516b1f82 2163 MSG_V("SwScaler: using n-tap %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
28bf81c9
MN
2164 }
2165
2166 if(dstFormat==IMGFMT_BGR24)
0d9f3d85 2167 MSG_V("SwScaler: using %s YV12->BGR24 Converter\n",
516b1f82 2168 (flags & SWS_CPU_CAPS_MMX2) ? "MMX2" : ((flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C"));
fd284805 2169 else if(dstFormat==IMGFMT_BGR32)
516b1f82 2170 MSG_V("SwScaler: using %s YV12->BGR32 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
fd284805 2171 else if(dstFormat==IMGFMT_BGR16)
516b1f82 2172 MSG_V("SwScaler: using %s YV12->BGR16 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
fd284805 2173 else if(dstFormat==IMGFMT_BGR15)
516b1f82 2174 MSG_V("SwScaler: using %s YV12->BGR15 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
28bf81c9 2175
0d9f3d85 2176 MSG_V("SwScaler: %dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);
28bf81c9 2177 }
516b1f82 2178 if(flags & SWS_PRINT_INFO)
1e621b18 2179 {
0d9f3d85 2180 MSG_DBG2("SwScaler:Lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
1e621b18 2181 c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);
0d9f3d85 2182 MSG_DBG2("SwScaler:Chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
1e621b18
MN
2183 c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);
2184 }
37079906 2185
516b1f82 2186 c->swScale= getSwsFunc(flags);
28bf81c9
MN
2187 return c;
2188}
2189
2190/**
77a416e8 2191 * swscale warper, so we don't need to export the SwsContext.
fccb9b2b
MN
2192 * assumes planar YUV to be in YUV order instead of YVU
2193 */
2194int sws_scale_ordered(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
2195 int srcSliceH, uint8_t* dst[], int dstStride[]){
46888748
MN
2196 //copy strides, so they can safely be modified
2197 int srcStride2[3]= {srcStride[0], srcStride[1], srcStride[2]};
2198 int dstStride2[3]= {dstStride[0], dstStride[1], dstStride[2]};
2199 return c->swScale(c, src, srcStride2, srcSliceY, srcSliceH, dst, dstStride2);
fccb9b2b
MN
2200}
2201
2202/**
77a416e8 2203 * swscale warper, so we don't need to export the SwsContext
d4e24275 2204 */
3e499f53
MN
2205int sws_scale(SwsContext *c, uint8_t* srcParam[], int srcStrideParam[], int srcSliceY,
2206 int srcSliceH, uint8_t* dstParam[], int dstStrideParam[]){
2207 int srcStride[3];
2208 int dstStride[3];
2209 uint8_t *src[3];
2210 uint8_t *dst[3];
fccb9b2b
MN
2211 sws_orderYUV(c->origSrcFormat, src, srcStride, srcParam, srcStrideParam);
2212 sws_orderYUV(c->origDstFormat, dst, dstStride, dstParam, dstStrideParam);
3e499f53 2213//printf("sws: slice %d %d\n", srcSliceY, srcSliceH);
a4c90ea3 2214
5bf01354 2215 return c->swScale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);
d4e24275 2216}
d4e24275 2217
e21206a8
MN
2218SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,
2219 float lumaSharpen, float chromaSharpen,
2220 float chromaHShift, float chromaVShift,
2221 int verbose)
2222{
2223 SwsFilter *filter= malloc(sizeof(SwsFilter));
2224
2225 if(lumaGBlur!=0.0){
2226 filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0);
2227 filter->lumV= sws_getGaussianVec(lumaGBlur, 3.0);
2228 }else{
2229 filter->lumH= sws_getIdentityVec();
2230 filter->lumV= sws_getIdentityVec();
2231 }
2232
2233 if(chromaGBlur!=0.0){
2234 filter->chrH= sws_getGaussianVec(chromaGBlur, 3.0);
2235 filter->chrV= sws_getGaussianVec(chromaGBlur, 3.0);
2236 }else{
2237 filter->chrH= sws_getIdentityVec();
2238 filter->chrV= sws_getIdentityVec();
2239 }
2240
2241 if(chromaSharpen!=0.0){
2242 SwsVector *g= sws_getConstVec(-1.0, 3);
2243 SwsVector *id= sws_getConstVec(10.0/chromaSharpen, 1);
2244 g->coeff[1]=2.0;
2245 sws_addVec(id, g);
2246 sws_convVec(filter->chrH, id);
2247 sws_convVec(filter->chrV, id);
2248 sws_freeVec(g);
2249 sws_freeVec(id);
2250 }
2251
2252 if(lumaSharpen!=0.0){
2253 SwsVector *g= sws_getConstVec(-1.0, 3);
2254 SwsVector *id= sws_getConstVec(10.0/lumaSharpen, 1);
2255 g->coeff[1]=2.0;
2256 sws_addVec(id, g);
2257 sws_convVec(filter->lumH, id);
2258 sws_convVec(filter->lumV, id);
2259 sws_freeVec(g);
2260 sws_freeVec(id);
2261 }
2262
2263 if(chromaHShift != 0.0)
2264 sws_shiftVec(filter->chrH, (int)(chromaHShift+0.5));
2265
2266 if(chromaVShift != 0.0)
2267 sws_shiftVec(filter->chrV, (int)(chromaVShift+0.5));
2268
2269 sws_normalizeVec(filter->chrH, 1.0);
2270 sws_normalizeVec(filter->chrV, 1.0);
2271 sws_normalizeVec(filter->lumH, 1.0);
2272 sws_normalizeVec(filter->lumV, 1.0);
2273
2274 if(verbose) sws_printVec(filter->chrH);
2275 if(verbose) sws_printVec(filter->lumH);
2276
2277 return filter;
2278}
2279
d4e24275 2280/**
28bf81c9
MN
2281 * returns a normalized gaussian curve used to filter stuff
2282 * quality=3 is high quality, lowwer is lowwer quality
2283 */
d4e24275 2284SwsVector *sws_getGaussianVec(double variance, double quality){
28bf81c9
MN
2285 const int length= (int)(variance*quality + 0.5) | 1;
2286 int i;
2287 double *coeff= memalign(sizeof(double), length*sizeof(double));
2288 double middle= (length-1)*0.5;
c7f822d9
MN
2289 SwsVector *vec= malloc(sizeof(SwsVector));
2290
2291 vec->coeff= coeff;
2292 vec->length= length;
28bf81c9
MN
2293
2294 for(i=0; i<length; i++)
2295 {
2296 double dist= i-middle;
2297 coeff[i]= exp( -dist*dist/(2*variance*variance) ) / sqrt(2*variance*PI);
2298 }
2299
d4e24275 2300 sws_normalizeVec(vec, 1.0);
c7f822d9
MN
2301
2302 return vec;
28bf81c9
MN
2303}
2304
d4e24275 2305SwsVector *sws_getConstVec(double c, int length){
5521b193
MN
2306 int i;
2307 double *coeff= memalign(sizeof(double), length*sizeof(double));
2308 SwsVector *vec= malloc(sizeof(SwsVector));
2309
2310 vec->coeff= coeff;
2311 vec->length= length;
2312
2313 for(i=0; i<length; i++)
2314 coeff[i]= c;
2315
2316 return vec;
2317}
2318
2319
d4e24275 2320SwsVector *sws_getIdentityVec(void){
c7f822d9
MN
2321 double *coeff= memalign(sizeof(double), sizeof(double));
2322 SwsVector *vec= malloc(sizeof(SwsVector));
2323 coeff[0]= 1.0;
2324
2325 vec->coeff= coeff;
2326 vec->length= 1;
2327
2328 return vec;
2329}
2330
d4e24275 2331void sws_normalizeVec(SwsVector *a, double height){
28bf81c9
MN
2332 int i;
2333 double sum=0;
2334 double inv;
2335
c7f822d9
MN
2336 for(i=0; i<a->length; i++)
2337 sum+= a->coeff[i];
28bf81c9
MN
2338
2339 inv= height/sum;
2340
c7f822d9 2341 for(i=0; i<a->length; i++)
8664c807 2342 a->coeff[i]*= inv;
28bf81c9
MN
2343}
2344
d4e24275 2345void sws_scaleVec(SwsVector *a, double scalar){
c7f822d9
MN
2346 int i;
2347
2348 for(i=0; i<a->length; i++)
2349 a->coeff[i]*= scalar;
2350}
2351
d4e24275 2352static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b){
c7f822d9 2353 int length= a->length + b->length - 1;
28bf81c9
MN
2354 double *coeff= memalign(sizeof(double), length*sizeof(double));
2355 int i, j;
c7f822d9
MN
2356 SwsVector *vec= malloc(sizeof(SwsVector));
2357
2358 vec->coeff= coeff;
2359 vec->length= length;
28bf81c9
MN
2360
2361 for(i=0; i<length; i++) coeff[i]= 0.0;
2362
c7f822d9 2363 for(i=0; i<a->length; i++)
28bf81c9 2364 {
c7f822d9 2365 for(j=0; j<b->length; j++)
28bf81c9 2366 {
c7f822d9 2367 coeff[i+j]+= a->coeff[i]*b->coeff[j];
28bf81c9
MN
2368 }
2369 }
2370
c7f822d9 2371 return vec;
28bf81c9
MN
2372}
2373
d4e24275 2374static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b){
c7f822d9 2375 int length= MAX(a->length, b->length);
28bf81c9
MN
2376 double *coeff= memalign(sizeof(double), length*sizeof(double));
2377 int i;
c7f822d9
MN
2378 SwsVector *vec= malloc(sizeof(SwsVector));
2379
2380 vec->coeff= coeff;
2381 vec->length= length;
28bf81c9
MN
2382
2383 for(i=0; i<length; i++) coeff[i]= 0.0;
2384
c7f822d9
MN
2385 for(i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];
2386 for(i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];
2387
2388 return vec;
28bf81c9 2389}
c7f822d9 2390
d4e24275 2391static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b){
c7f822d9
MN
2392 int length= MAX(a->length, b->length);
2393 double *coeff= memalign(sizeof(double), length*sizeof(double));
2394 int i;
2395 SwsVector *vec= malloc(sizeof(SwsVector));
2396
2397 vec->coeff= coeff;
2398 vec->length= length;
2399
2400 for(i=0; i<length; i++) coeff[i]= 0.0;
2401
2402 for(i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];
2403 for(i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];
2404
2405 return vec;
2406}
2407
2408/* shift left / or right if "shift" is negative */
d4e24275 2409static SwsVector *sws_getShiftedVec(SwsVector *a, int shift){
c7f822d9
MN
2410 int length= a->length + ABS(shift)*2;
2411 double *coeff= memalign(sizeof(double), length*sizeof(double));
ff7ba856 2412 int i;
c7f822d9
MN
2413 SwsVector *vec= malloc(sizeof(SwsVector));
2414
2415 vec->coeff= coeff;
2416 vec->length= length;
2417
2418 for(i=0; i<length; i++) coeff[i]= 0.0;
2419
2420 for(i=0; i<a->length; i++)
2421 {
2422 coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];
2423 }
2424
2425 return vec;
2426}
2427
d4e24275
MN
2428void sws_shiftVec(SwsVector *a, int shift){
2429 SwsVector *shifted= sws_getShiftedVec(a, shift);
5cebb24b
MN
2430 free(a->coeff);
2431 a->coeff= shifted->coeff;
2432 a->length= shifted->length;
2433 free(shifted);
2434}
2435
d4e24275
MN
2436void sws_addVec(SwsVector *a, SwsVector *b){
2437 SwsVector *sum= sws_sumVec(a, b);
5cebb24b
MN
2438 free(a->coeff);
2439 a->coeff= sum->coeff;
2440 a->length= sum->length;
2441 free(sum);
2442}
2443
d4e24275
MN
2444void sws_subVec(SwsVector *a, SwsVector *b){
2445 SwsVector *diff= sws_diffVec(a, b);
5cebb24b
MN
2446 free(a->coeff);
2447 a->coeff= diff->coeff;
2448 a->length= diff->length;
2449 free(diff);
2450}
2451
d4e24275
MN
2452void sws_convVec(SwsVector *a, SwsVector *b){
2453 SwsVector *conv= sws_getConvVec(a, b);
2454 free(a->coeff);
5cebb24b
MN
2455 a->coeff= conv->coeff;
2456 a->length= conv->length;
2457 free(conv);
2458}
2459
d4e24275 2460SwsVector *sws_cloneVec(SwsVector *a){
5cebb24b
MN
2461 double *coeff= memalign(sizeof(double), a->length*sizeof(double));
2462 int i;
2463 SwsVector *vec= malloc(sizeof(SwsVector));
2464
2465 vec->coeff= coeff;
2466 vec->length= a->length;
2467
2468 for(i=0; i<a->length; i++) coeff[i]= a->coeff[i];
2469
2470 return vec;
2471}
2472
d4e24275 2473void sws_printVec(SwsVector *a){
c7f822d9
MN
2474 int i;
2475 double max=0;
2476 double min=0;
2477 double range;
2478
2479 for(i=0; i<a->length; i++)
2480 if(a->coeff[i]>max) max= a->coeff[i];
2481
2482 for(i=0; i<a->length; i++)
2483 if(a->coeff[i]<min) min= a->coeff[i];
2484
2485 range= max - min;
2486
2487 for(i=0; i<a->length; i++)
2488 {
2489 int x= (int)((a->coeff[i]-min)*60.0/range +0.5);
0d9f3d85
A
2490 MSG_DBG2("%1.3f ", a->coeff[i]);
2491 for(;x>0; x--) MSG_DBG2(" ");
2492 MSG_DBG2("|\n");
c7f822d9
MN
2493 }
2494}
2495
d4e24275 2496void sws_freeVec(SwsVector *a){
c7f822d9
MN
2497 if(!a) return;
2498 if(a->coeff) free(a->coeff);
2499 a->coeff=NULL;
2500 a->length=0;
2501 free(a);
2502}
2503
e21206a8
MN
2504void sws_freeFilter(SwsFilter *filter){
2505 if(!filter) return;
2506
2507 if(filter->lumH) sws_freeVec(filter->lumH);
2508 if(filter->lumV) sws_freeVec(filter->lumV);
2509 if(filter->chrH) sws_freeVec(filter->chrH);
2510 if(filter->chrV) sws_freeVec(filter->chrV);
2511 free(filter);
2512}
2513
2514
d4e24275 2515void sws_freeContext(SwsContext *c){
c7f822d9 2516 int i;
c7f822d9
MN
2517 if(!c) return;
2518
2519 if(c->lumPixBuf)
2520 {
6c7506de 2521 for(i=0; i<c->vLumBufSize; i++)
c7f822d9
MN
2522 {
2523 if(c->lumPixBuf[i]) free(c->lumPixBuf[i]);
2524 c->lumPixBuf[i]=NULL;
2525 }
2526 free(c->lumPixBuf);
2527 c->lumPixBuf=NULL;
2528 }
2529
2530 if(c->chrPixBuf)
2531 {
6c7506de 2532 for(i=0; i<c->vChrBufSize; i++)
c7f822d9
MN
2533 {
2534 if(c->chrPixBuf[i]) free(c->chrPixBuf[i]);
2535 c->chrPixBuf[i]=NULL;
2536 }
2537 free(c->chrPixBuf);
2538 c->chrPixBuf=NULL;
2539 }
2540
2541 if(c->vLumFilter) free(c->vLumFilter);
2542 c->vLumFilter = NULL;
2543 if(c->vChrFilter) free(c->vChrFilter);
2544 c->vChrFilter = NULL;
2545 if(c->hLumFilter) free(c->hLumFilter);
2546 c->hLumFilter = NULL;
2547 if(c->hChrFilter) free(c->hChrFilter);
2548 c->hChrFilter = NULL;
2549
2550 if(c->vLumFilterPos) free(c->vLumFilterPos);
2551 c->vLumFilterPos = NULL;
2552 if(c->vChrFilterPos) free(c->vChrFilterPos);
2553 c->vChrFilterPos = NULL;
2554 if(c->hLumFilterPos) free(c->hLumFilterPos);
2555 c->hLumFilterPos = NULL;
2556 if(c->hChrFilterPos) free(c->hChrFilterPos);
2557 c->hChrFilterPos = NULL;
2558
b7dc6f66
MN
2559 if(c->lumMmx2Filter) free(c->lumMmx2Filter);
2560 c->lumMmx2Filter=NULL;
2561 if(c->chrMmx2Filter) free(c->chrMmx2Filter);
2562 c->chrMmx2Filter=NULL;
2563 if(c->lumMmx2FilterPos) free(c->lumMmx2FilterPos);
2564 c->lumMmx2FilterPos=NULL;
2565 if(c->chrMmx2FilterPos) free(c->chrMmx2FilterPos);
2566 c->chrMmx2FilterPos=NULL;
cf7d1c1a
MN
2567 if(c->yuvTable) free(c->yuvTable);
2568 c->yuvTable=NULL;
b7dc6f66 2569
c7f822d9
MN
2570 free(c);
2571}
2572