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ffmpeg / postproc / swscale.c @ a749913f

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1
/*
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    Copyright (C) 2001-2002 Michael Niedermayer <michaelni@gmx.at>
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    This program is free software; you can redistribute it and/or modify
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    it under the terms of the GNU General Public License as published by
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    the Free Software Foundation; either version 2 of the License, or
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    (at your option) any later version.
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    This program is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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    GNU General Public License for more details.
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    You should have received a copy of the GNU General Public License
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    along with this program; if not, write to the Free Software
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    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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*/
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/*
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  supported Input formats: YV12, I420/IYUV, YUY2, BGR32, BGR24, BGR16, BGR15, RGB32, RGB24, Y8/Y800, YVU9/IF09
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  supported output formats: YV12, I420/IYUV, YUY2, {BGR,RGB}{1,4,8,15,16,24,32}, Y8/Y800, YVU9/IF09
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  {BGR,RGB}{1,4,8,15,16} support dithering
23
  
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  unscaled special converters (YV12=I420=IYUV, Y800=Y8)
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  YV12 -> {BGR,RGB}{1,4,8,15,16,24,32}
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  x -> x
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  YUV9 -> YV12
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  YUV9/YV12 -> Y800
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  Y800 -> YUV9/YV12
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  BGR24 -> BGR32 & RGB24 -> RGB32
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  BGR32 -> BGR24 & RGB32 -> RGB24
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  BGR15 -> BGR16
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*/
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/* 
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tested special converters (most are tested actually but i didnt write it down ...)
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 YV12 -> BGR16
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 YV12 -> YV12
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 BGR15 -> BGR16
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 BGR16 -> BGR16
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 YVU9 -> YV12
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43
untested special converters
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  YV12/I420 -> BGR15/BGR24/BGR32 (its the yuv2rgb stuff, so it should be ok)
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  YV12/I420 -> YV12/I420
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  YUY2/BGR15/BGR24/BGR32/RGB24/RGB32 -> same format
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  BGR24 -> BGR32 & RGB24 -> RGB32
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  BGR32 -> BGR24 & RGB32 -> RGB24
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  BGR24 -> YV12
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*/
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#include <inttypes.h>
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#include <string.h>
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#include <math.h>
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#include <stdio.h>
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#include "../config.h"
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#include "../mangle.h"
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#include <assert.h>
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#ifdef HAVE_MALLOC_H
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#include <malloc.h>
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#else
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#include <stdlib.h>
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#endif
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#include "swscale.h"
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#include "../cpudetect.h"
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#include "../bswap.h"
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#include "../libvo/img_format.h"
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#include "rgb2rgb.h"
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#include "../libvo/fastmemcpy.h"
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#include "../mp_msg.h"
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#define MSG_WARN(args...) mp_msg(MSGT_SWS,MSGL_WARN, ##args )
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#define MSG_FATAL(args...) mp_msg(MSGT_SWS,MSGL_FATAL, ##args )
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#define MSG_ERR(args...) mp_msg(MSGT_SWS,MSGL_ERR, ##args )
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#define MSG_V(args...) mp_msg(MSGT_SWS,MSGL_V, ##args )
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#define MSG_DBG2(args...) mp_msg(MSGT_SWS,MSGL_DBG2, ##args )
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#define MSG_INFO(args...) mp_msg(MSGT_SWS,MSGL_INFO, ##args )
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#undef MOVNTQ
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#undef PAVGB
81

    
82
//#undef HAVE_MMX2
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//#define HAVE_3DNOW
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//#undef HAVE_MMX
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//#undef ARCH_X86
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//#define WORDS_BIGENDIAN
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#define DITHER1XBPP
88

    
89
#define FAST_BGR2YV12 // use 7 bit coeffs instead of 15bit
90

    
91
#define RET 0xC3 //near return opcode for X86
92

    
93
#ifdef MP_DEBUG
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#define ASSERT(x) assert(x);
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#else
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#define ASSERT(x) ;
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#endif
98

    
99
#ifdef M_PI
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#define PI M_PI
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#else
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#define PI 3.14159265358979323846
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#endif
104

    
105
//FIXME replace this with something faster
106
#define isPlanarYUV(x) ((x)==IMGFMT_YV12 || (x)==IMGFMT_I420 || (x)==IMGFMT_YVU9 \
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                        || (x)==IMGFMT_444P || (x)==IMGFMT_422P || (x)==IMGFMT_411P)
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#define isYUV(x)       ((x)==IMGFMT_YUY2 || isPlanarYUV(x))
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#define isGray(x)      ((x)==IMGFMT_Y800)
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#define isRGB(x)       (((x)&IMGFMT_RGB_MASK)==IMGFMT_RGB)
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#define isBGR(x)       (((x)&IMGFMT_BGR_MASK)==IMGFMT_BGR)
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#define isSupportedIn(x)  ((x)==IMGFMT_YV12 || (x)==IMGFMT_I420 || (x)==IMGFMT_YUY2 \
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                        || (x)==IMGFMT_BGR32|| (x)==IMGFMT_BGR24|| (x)==IMGFMT_BGR16|| (x)==IMGFMT_BGR15\
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                        || (x)==IMGFMT_RGB32|| (x)==IMGFMT_RGB24\
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                        || (x)==IMGFMT_Y800 || (x)==IMGFMT_YVU9\
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                        || (x)==IMGFMT_444P || (x)==IMGFMT_422P || (x)==IMGFMT_411P)
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#define isSupportedOut(x) ((x)==IMGFMT_YV12 || (x)==IMGFMT_I420 || (x)==IMGFMT_YUY2\
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                        || (x)==IMGFMT_444P || (x)==IMGFMT_422P || (x)==IMGFMT_411P\
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                        || isRGB(x) || isBGR(x)\
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                        || (x)==IMGFMT_Y800 || (x)==IMGFMT_YVU9)
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#define isPacked(x)    ((x)==IMGFMT_YUY2 || isRGB(x) || isBGR(x))
122

    
123
#define RGB2YUV_SHIFT 16
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#define BY ((int)( 0.098*(1<<RGB2YUV_SHIFT)+0.5))
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#define BV ((int)(-0.071*(1<<RGB2YUV_SHIFT)+0.5))
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#define BU ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
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#define GY ((int)( 0.504*(1<<RGB2YUV_SHIFT)+0.5))
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#define GV ((int)(-0.368*(1<<RGB2YUV_SHIFT)+0.5))
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#define GU ((int)(-0.291*(1<<RGB2YUV_SHIFT)+0.5))
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#define RY ((int)( 0.257*(1<<RGB2YUV_SHIFT)+0.5))
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#define RV ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
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#define RU ((int)(-0.148*(1<<RGB2YUV_SHIFT)+0.5))
133

    
134
extern int verbose; // defined in mplayer.c
135
/*
136
NOTES
137
Special versions: fast Y 1:1 scaling (no interpolation in y direction)
138

139
TODO
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more intelligent missalignment avoidance for the horizontal scaler
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write special vertical cubic upscale version
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Optimize C code (yv12 / minmax)
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add support for packed pixel yuv input & output
144
add support for Y8 output
145
optimize bgr24 & bgr32
146
add BGR4 output support
147
write special BGR->BGR scaler
148
deglobalize yuv2rgb*.c
149
*/
150

    
151
#define ABS(a) ((a) > 0 ? (a) : (-(a)))
152
#define MIN(a,b) ((a) > (b) ? (b) : (a))
153
#define MAX(a,b) ((a) < (b) ? (b) : (a))
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155
#ifdef ARCH_X86
156
#define CAN_COMPILE_X86_ASM
157
#endif
158

    
159
#ifdef CAN_COMPILE_X86_ASM
160
static uint64_t __attribute__((aligned(8))) yCoeff=    0x2568256825682568LL;
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static uint64_t __attribute__((aligned(8))) vrCoeff=   0x3343334333433343LL;
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static uint64_t __attribute__((aligned(8))) ubCoeff=   0x40cf40cf40cf40cfLL;
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static uint64_t __attribute__((aligned(8))) vgCoeff=   0xE5E2E5E2E5E2E5E2LL;
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static uint64_t __attribute__((aligned(8))) ugCoeff=   0xF36EF36EF36EF36ELL;
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static uint64_t __attribute__((aligned(8))) bF8=       0xF8F8F8F8F8F8F8F8LL;
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static uint64_t __attribute__((aligned(8))) bFC=       0xFCFCFCFCFCFCFCFCLL;
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static uint64_t __attribute__((aligned(8))) w400=      0x0400040004000400LL;
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static uint64_t __attribute__((aligned(8))) w80=       0x0080008000800080LL;
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static uint64_t __attribute__((aligned(8))) w10=       0x0010001000100010LL;
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static uint64_t __attribute__((aligned(8))) w02=       0x0002000200020002LL;
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static uint64_t __attribute__((aligned(8))) bm00001111=0x00000000FFFFFFFFLL;
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static uint64_t __attribute__((aligned(8))) bm00000111=0x0000000000FFFFFFLL;
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static uint64_t __attribute__((aligned(8))) bm11111000=0xFFFFFFFFFF000000LL;
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static uint64_t __attribute__((aligned(8))) bm01010101=0x00FF00FF00FF00FFLL;
175

    
176
static volatile uint64_t __attribute__((aligned(8))) b5Dither;
177
static volatile uint64_t __attribute__((aligned(8))) g5Dither;
178
static volatile uint64_t __attribute__((aligned(8))) g6Dither;
179
static volatile uint64_t __attribute__((aligned(8))) r5Dither;
180

    
181
static uint64_t __attribute__((aligned(8))) dither4[2]={
182
        0x0103010301030103LL,
183
        0x0200020002000200LL,};
184

    
185
static uint64_t __attribute__((aligned(8))) dither8[2]={
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        0x0602060206020602LL,
187
        0x0004000400040004LL,};
188

    
189
static uint64_t __attribute__((aligned(8))) b16Mask=   0x001F001F001F001FLL;
190
static uint64_t __attribute__((aligned(8))) g16Mask=   0x07E007E007E007E0LL;
191
static uint64_t __attribute__((aligned(8))) r16Mask=   0xF800F800F800F800LL;
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static uint64_t __attribute__((aligned(8))) b15Mask=   0x001F001F001F001FLL;
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static uint64_t __attribute__((aligned(8))) g15Mask=   0x03E003E003E003E0LL;
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static uint64_t __attribute__((aligned(8))) r15Mask=   0x7C007C007C007C00LL;
195

    
196
static uint64_t __attribute__((aligned(8))) M24A=   0x00FF0000FF0000FFLL;
197
static uint64_t __attribute__((aligned(8))) M24B=   0xFF0000FF0000FF00LL;
198
static uint64_t __attribute__((aligned(8))) M24C=   0x0000FF0000FF0000LL;
199

    
200
#ifdef FAST_BGR2YV12
201
static const uint64_t bgr2YCoeff  __attribute__((aligned(8))) = 0x000000210041000DULL;
202
static const uint64_t bgr2UCoeff  __attribute__((aligned(8))) = 0x0000FFEEFFDC0038ULL;
203
static const uint64_t bgr2VCoeff  __attribute__((aligned(8))) = 0x00000038FFD2FFF8ULL;
204
#else
205
static const uint64_t bgr2YCoeff  __attribute__((aligned(8))) = 0x000020E540830C8BULL;
206
static const uint64_t bgr2UCoeff  __attribute__((aligned(8))) = 0x0000ED0FDAC23831ULL;
207
static const uint64_t bgr2VCoeff  __attribute__((aligned(8))) = 0x00003831D0E6F6EAULL;
208
#endif
209
static const uint64_t bgr2YOffset __attribute__((aligned(8))) = 0x1010101010101010ULL;
210
static const uint64_t bgr2UVOffset __attribute__((aligned(8)))= 0x8080808080808080ULL;
211
static const uint64_t w1111       __attribute__((aligned(8))) = 0x0001000100010001ULL;
212
#endif
213

    
214
// clipping helper table for C implementations:
215
static unsigned char clip_table[768];
216

    
217
//global sws_flags from the command line
218
int sws_flags=2;
219

    
220
//global srcFilter
221
SwsFilter src_filter= {NULL, NULL, NULL, NULL};
222

    
223
float sws_lum_gblur= 0.0;
224
float sws_chr_gblur= 0.0;
225
int sws_chr_vshift= 0;
226
int sws_chr_hshift= 0;
227
float sws_chr_sharpen= 0.0;
228
float sws_lum_sharpen= 0.0;
229

    
230
/* cpuCaps combined from cpudetect and whats actually compiled in
231
   (if there is no support for something compiled in it wont appear here) */
232
static CpuCaps cpuCaps;
233

    
234
void (*swScale)(SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY,
235
             int srcSliceH, uint8_t* dst[], int dstStride[])=NULL;
236

    
237
static SwsVector *getConvVec(SwsVector *a, SwsVector *b);
238
static inline void orderYUV(int format, uint8_t * sortedP[], int sortedStride[], uint8_t * p[], int stride[]);
239
void *yuv2rgb_c_init (unsigned bpp, int mode, void *table_rV[256], void *table_gU[256], int table_gV[256], void *table_bU[256]);
240

    
241
extern const uint8_t dither_2x2_4[2][8];
242
extern const uint8_t dither_2x2_8[2][8];
243
extern const uint8_t dither_8x8_32[8][8];
244
extern const uint8_t dither_8x8_73[8][8];
245
extern const uint8_t dither_8x8_220[8][8];
246

    
247
#ifdef CAN_COMPILE_X86_ASM
248
void in_asm_used_var_warning_killer()
249
{
250
 volatile int i= yCoeff+vrCoeff+ubCoeff+vgCoeff+ugCoeff+bF8+bFC+w400+w80+w10+
251
 bm00001111+bm00000111+bm11111000+b16Mask+g16Mask+r16Mask+b15Mask+g15Mask+r15Mask+
252
 M24A+M24B+M24C+w02 + b5Dither+g5Dither+r5Dither+g6Dither+dither4[0]+dither8[0]+bm01010101;
253
 if(i) i=0;
254
}
255
#endif
256

    
257
static int testFormat[]={
258
IMGFMT_YVU9,
259
IMGFMT_YV12,
260
//IMGFMT_IYUV,
261
IMGFMT_I420,
262
IMGFMT_BGR15,
263
IMGFMT_BGR16,
264
IMGFMT_BGR24,
265
IMGFMT_BGR32,
266
IMGFMT_RGB24,
267
IMGFMT_RGB32,
268
//IMGFMT_Y8,
269
IMGFMT_Y800,
270
//IMGFMT_YUY2,
271
0
272
};
273

    
274
static uint64_t getSSD(uint8_t *src1, uint8_t *src2, int stride1, int stride2, int w, int h){
275
        int x,y;
276
        uint64_t ssd=0;
277

    
278
        for(y=0; y<h; y++){
279
                for(x=0; x<w; x++){
280
                        int d= src1[x + y*stride1] - src2[x + y*stride2];
281
                        ssd+= d*d;
282
                }
283
        }
284
        return ssd;
285
}
286

    
287
// test by ref -> src -> dst -> out & compare out against ref
288
// ref & out are YV12
289
static void doTest(uint8_t *ref[3], int refStride[3], int w, int h, int srcFormat, int dstFormat, 
290
                   int srcW, int srcH, int dstW, int dstH, int flags){
291
        uint8_t *src[3];
292
        uint8_t *dst[3];
293
        uint8_t *out[3];
294
        int srcStride[3], dstStride[3];
295
        int i;
296
        uint64_t ssdY, ssdU, ssdV;
297
        SwsContext *srcContext, *dstContext, *outContext;
298
        
299
        for(i=0; i<3; i++){
300
                // avoid stride % bpp != 0
301
                if(srcFormat==IMGFMT_RGB24 || srcFormat==IMGFMT_BGR24)
302
                        srcStride[i]= srcW*3;
303
                else
304
                        srcStride[i]= srcW*4;
305
                
306
                if(dstFormat==IMGFMT_RGB24 || dstFormat==IMGFMT_BGR24)
307
                        dstStride[i]= dstW*3;
308
                else
309
                        dstStride[i]= dstW*4;
310
        
311
                src[i]= malloc(srcStride[i]*srcH);
312
                dst[i]= malloc(dstStride[i]*dstH);
313
                out[i]= malloc(refStride[i]*h);
314
        }
315

    
316
        srcContext= getSwsContext(w, h, IMGFMT_YV12, srcW, srcH, srcFormat, flags, NULL, NULL);
317
        dstContext= getSwsContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat, flags, NULL, NULL);
318
        outContext= getSwsContext(dstW, dstH, dstFormat, w, h, IMGFMT_YV12, flags, NULL, NULL);
319
        if(srcContext==NULL ||dstContext==NULL ||outContext==NULL){
320
                printf("Failed allocating swsContext\n");
321
                goto end;
322
        }
323
//        printf("test %X %X %X -> %X %X %X\n", (int)ref[0], (int)ref[1], (int)ref[2],
324
//                (int)src[0], (int)src[1], (int)src[2]);
325

    
326
        srcContext->swScale(srcContext, ref, refStride, 0, h   , src, srcStride);
327
        dstContext->swScale(dstContext, src, srcStride, 0, srcH, dst, dstStride);
328
        outContext->swScale(outContext, dst, dstStride, 0, dstH, out, refStride);
329
             
330
        ssdY= getSSD(ref[0], out[0], refStride[0], refStride[0], w, h);
331
        ssdU= getSSD(ref[1], out[1], refStride[1], refStride[1], (w+1)>>1, (h+1)>>1);
332
        ssdV= getSSD(ref[2], out[2], refStride[2], refStride[2], (w+1)>>1, (h+1)>>1);
333
        
334
        if(isGray(srcFormat) || isGray(dstFormat)) ssdU=ssdV=0; //FIXME check that output is really gray
335
        
336
        ssdY/= w*h;
337
        ssdU/= w*h/4;
338
        ssdV/= w*h/4;
339
        
340
        if(ssdY>100 || ssdU>50 || ssdV>50){
341
                printf(" %s %dx%d -> %s %4dx%4d flags=%2d SSD=%5lld,%5lld,%5lld\n", 
342
                        vo_format_name(srcFormat), srcW, srcH, 
343
                        vo_format_name(dstFormat), dstW, dstH,
344
                        flags,
345
                        ssdY, ssdU, ssdV);
346
        }
347

    
348
        end:
349
        
350
        freeSwsContext(srcContext);
351
        freeSwsContext(dstContext);
352
        freeSwsContext(outContext);
353

    
354
        for(i=0; i<3; i++){
355
                free(src[i]);
356
                free(dst[i]);
357
                free(out[i]);
358
        }
359
}
360

    
361
static void selfTest(uint8_t *src[3], int stride[3], int w, int h){
362
        int srcFormat, dstFormat, srcFormatIndex, dstFormatIndex;
363
        int srcW, srcH, dstW, dstH;
364
        int flags;
365

    
366
        for(srcFormatIndex=0; ;srcFormatIndex++){
367
                srcFormat= testFormat[srcFormatIndex];
368
                if(!srcFormat) break;
369
                for(dstFormatIndex=0; ;dstFormatIndex++){
370
                        dstFormat= testFormat[dstFormatIndex];
371
                        if(!dstFormat) break;
372
                        if(!isSupportedOut(dstFormat)) continue;
373
printf("%s -> %s\n", 
374
        vo_format_name(srcFormat),
375
        vo_format_name(dstFormat));
376

    
377
                        srcW= w+w/3;
378
                        srcH= h+h/3;
379
                        for(dstW=w; dstW<w*2; dstW+= dstW/3){
380
                                for(dstH=h; dstH<h*2; dstH+= dstH/3){
381
                                        for(flags=1; flags<33; flags*=2)
382
                                                doTest(src, stride, w, h, srcFormat, dstFormat,
383
                                                        srcW, srcH, dstW, dstH, flags);
384
                                }
385
                        }
386
                }
387
        }
388
}
389

    
390
static inline void yuv2yuvXinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
391
                                    int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
392
                                    uint8_t *dest, uint8_t *uDest, uint8_t *vDest, int dstW, int chrDstW)
393
{
394
        //FIXME Optimize (just quickly writen not opti..)
395
        int i;
396
        for(i=0; i<dstW; i++)
397
        {
398
                int val=0;
399
                int j;
400
                for(j=0; j<lumFilterSize; j++)
401
                        val += lumSrc[j][i] * lumFilter[j];
402

    
403
                dest[i]= MIN(MAX(val>>19, 0), 255);
404
        }
405

    
406
        if(uDest != NULL)
407
                for(i=0; i<chrDstW; i++)
408
                {
409
                        int u=0;
410
                        int v=0;
411
                        int j;
412
                        for(j=0; j<chrFilterSize; j++)
413
                        {
414
                                u += chrSrc[j][i] * chrFilter[j];
415
                                v += chrSrc[j][i + 2048] * chrFilter[j];
416
                        }
417

    
418
                        uDest[i]= MIN(MAX(u>>19, 0), 255);
419
                        vDest[i]= MIN(MAX(v>>19, 0), 255);
420
                }
421
}
422

    
423

    
424
#define YSCALE_YUV_2_PACKEDX_C(type) \
425
                for(i=0; i<(dstW>>1); i++){\
426
                        int j;\
427
                        int Y1=0;\
428
                        int Y2=0;\
429
                        int U=0;\
430
                        int V=0;\
431
                        type *r, *b, *g;\
432
                        const int i2= 2*i;\
433
                        \
434
                        for(j=0; j<lumFilterSize; j++)\
435
                        {\
436
                                Y1 += lumSrc[j][i2] * lumFilter[j];\
437
                                Y2 += lumSrc[j][i2+1] * lumFilter[j];\
438
                        }\
439
                        for(j=0; j<chrFilterSize; j++)\
440
                        {\
441
                                U += chrSrc[j][i] * chrFilter[j];\
442
                                V += chrSrc[j][i+2048] * chrFilter[j];\
443
                        }\
444
                        Y1>>=19;\
445
                        Y2>>=19;\
446
                        U >>=19;\
447
                        V >>=19;\
448
                        if((Y1|Y2|U|V)&256)\
449
                        {\
450
                                if(Y1>255)   Y1=255;\
451
                                else if(Y1<0)Y1=0;\
452
                                if(Y2>255)   Y2=255;\
453
                                else if(Y2<0)Y2=0;\
454
                                if(U>255)    U=255;\
455
                                else if(U<0) U=0;\
456
                                if(V>255)    V=255;\
457
                                else if(V<0) V=0;\
458
                        }
459
                        
460
#define YSCALE_YUV_2_RGBX_C(type) \
461
                        YSCALE_YUV_2_PACKEDX_C(type)\
462
                        r = c->table_rV[V];\
463
                        g = c->table_gU[U] + c->table_gV[V];\
464
                        b = c->table_bU[U];\
465

    
466
#define YSCALE_YUV_2_PACKED2_C \
467
                for(i=0; i<(dstW>>1); i++){\
468
                        const int i2= 2*i;\
469
                        int Y1= (buf0[i2  ]*yalpha1+buf1[i2  ]*yalpha)>>19;\
470
                        int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>19;\
471
                        int U= (uvbuf0[i     ]*uvalpha1+uvbuf1[i     ]*uvalpha)>>19;\
472
                        int V= (uvbuf0[i+2048]*uvalpha1+uvbuf1[i+2048]*uvalpha)>>19;\
473

    
474
#define YSCALE_YUV_2_RGB2_C(type) \
475
                        YSCALE_YUV_2_PACKED2_C\
476
                        type *r, *b, *g;\
477
                        r = c->table_rV[V];\
478
                        g = c->table_gU[U] + c->table_gV[V];\
479
                        b = c->table_bU[U];\
480

    
481
#define YSCALE_YUV_2_PACKED1_C \
482
                for(i=0; i<(dstW>>1); i++){\
483
                        const int i2= 2*i;\
484
                        int Y1= buf0[i2  ]>>7;\
485
                        int Y2= buf0[i2+1]>>7;\
486
                        int U= (uvbuf1[i     ])>>7;\
487
                        int V= (uvbuf1[i+2048])>>7;\
488

    
489
#define YSCALE_YUV_2_RGB1_C(type) \
490
                        YSCALE_YUV_2_PACKED1_C\
491
                        type *r, *b, *g;\
492
                        r = c->table_rV[V];\
493
                        g = c->table_gU[U] + c->table_gV[V];\
494
                        b = c->table_bU[U];\
495

    
496
#define YSCALE_YUV_2_PACKED1B_C \
497
                for(i=0; i<(dstW>>1); i++){\
498
                        const int i2= 2*i;\
499
                        int Y1= buf0[i2  ]>>7;\
500
                        int Y2= buf0[i2+1]>>7;\
501
                        int U= (uvbuf0[i     ] + uvbuf1[i     ])>>8;\
502
                        int V= (uvbuf0[i+2048] + uvbuf1[i+2048])>>8;\
503

    
504
#define YSCALE_YUV_2_RGB1B_C(type) \
505
                        YSCALE_YUV_2_PACKED1B_C\
506
                        type *r, *b, *g;\
507
                        r = c->table_rV[V];\
508
                        g = c->table_gU[U] + c->table_gV[V];\
509
                        b = c->table_bU[U];\
510

    
511
#define YSCALE_YUV_2_ANYRGB_C(func, func2)\
512
        switch(c->dstFormat)\
513
        {\
514
        case IMGFMT_BGR32:\
515
        case IMGFMT_RGB32:\
516
                func(uint32_t)\
517
                        ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];\
518
                        ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];\
519
                }                \
520
                break;\
521
        case IMGFMT_RGB24:\
522
                func(uint8_t)\
523
                        ((uint8_t*)dest)[0]= r[Y1];\
524
                        ((uint8_t*)dest)[1]= g[Y1];\
525
                        ((uint8_t*)dest)[2]= b[Y1];\
526
                        ((uint8_t*)dest)[3]= r[Y2];\
527
                        ((uint8_t*)dest)[4]= g[Y2];\
528
                        ((uint8_t*)dest)[5]= b[Y2];\
529
                        ((uint8_t*)dest)+=6;\
530
                }\
531
                break;\
532
        case IMGFMT_BGR24:\
533
                func(uint8_t)\
534
                        ((uint8_t*)dest)[0]= b[Y1];\
535
                        ((uint8_t*)dest)[1]= g[Y1];\
536
                        ((uint8_t*)dest)[2]= r[Y1];\
537
                        ((uint8_t*)dest)[3]= b[Y2];\
538
                        ((uint8_t*)dest)[4]= g[Y2];\
539
                        ((uint8_t*)dest)[5]= r[Y2];\
540
                        ((uint8_t*)dest)+=6;\
541
                }\
542
                break;\
543
        case IMGFMT_RGB16:\
544
        case IMGFMT_BGR16:\
545
                {\
546
                        const int dr1= dither_2x2_8[y&1    ][0];\
547
                        const int dg1= dither_2x2_4[y&1    ][0];\
548
                        const int db1= dither_2x2_8[(y&1)^1][0];\
549
                        const int dr2= dither_2x2_8[y&1    ][1];\
550
                        const int dg2= dither_2x2_4[y&1    ][1];\
551
                        const int db2= dither_2x2_8[(y&1)^1][1];\
552
                        func(uint16_t)\
553
                                ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
554
                                ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
555
                        }\
556
                }\
557
                break;\
558
        case IMGFMT_RGB15:\
559
        case IMGFMT_BGR15:\
560
                {\
561
                        const int dr1= dither_2x2_8[y&1    ][0];\
562
                        const int dg1= dither_2x2_8[y&1    ][1];\
563
                        const int db1= dither_2x2_8[(y&1)^1][0];\
564
                        const int dr2= dither_2x2_8[y&1    ][1];\
565
                        const int dg2= dither_2x2_8[y&1    ][0];\
566
                        const int db2= dither_2x2_8[(y&1)^1][1];\
567
                        func(uint16_t)\
568
                                ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
569
                                ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
570
                        }\
571
                }\
572
                break;\
573
        case IMGFMT_RGB8:\
574
        case IMGFMT_BGR8:\
575
                {\
576
                        const uint8_t * const d64= dither_8x8_73[y&7];\
577
                        const uint8_t * const d32= dither_8x8_32[y&7];\
578
                        func(uint8_t)\
579
                                ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];\
580
                                ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];\
581
                        }\
582
                }\
583
                break;\
584
        case IMGFMT_RGB4:\
585
        case IMGFMT_BGR4:\
586
                {\
587
                        const uint8_t * const d64= dither_8x8_73 [y&7];\
588
                        const uint8_t * const d128=dither_8x8_220[y&7];\
589
                        func(uint8_t)\
590
                                ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];\
591
                                ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];\
592
                        }\
593
                }\
594
                break;\
595
        case IMGFMT_RGB1:\
596
        case IMGFMT_BGR1:\
597
                {\
598
                        const uint8_t * const d128=dither_8x8_220[y&7];\
599
                        uint8_t *g= c->table_gU[128] + c->table_gV[128];\
600
                        for(i=0; i<dstW-7; i+=8){\
601
                                int acc;\
602
                                acc =       g[((buf0[i  ]*yalpha1+buf1[i  ]*yalpha)>>19) + d128[0]];\
603
                                acc+= acc + g[((buf0[i+1]*yalpha1+buf1[i+1]*yalpha)>>19) + d128[1]];\
604
                                acc+= acc + g[((buf0[i+2]*yalpha1+buf1[i+2]*yalpha)>>19) + d128[2]];\
605
                                acc+= acc + g[((buf0[i+3]*yalpha1+buf1[i+3]*yalpha)>>19) + d128[3]];\
606
                                acc+= acc + g[((buf0[i+4]*yalpha1+buf1[i+4]*yalpha)>>19) + d128[4]];\
607
                                acc+= acc + g[((buf0[i+5]*yalpha1+buf1[i+5]*yalpha)>>19) + d128[5]];\
608
                                acc+= acc + g[((buf0[i+6]*yalpha1+buf1[i+6]*yalpha)>>19) + d128[6]];\
609
                                acc+= acc + g[((buf0[i+7]*yalpha1+buf1[i+7]*yalpha)>>19) + d128[7]];\
610
                                ((uint8_t*)dest)[0]= acc;\
611
                                ((uint8_t*)dest)++;\
612
                        }\
613
\
614
/*\
615
((uint8_t*)dest)-= dstW>>4;\
616
{\
617
                        int acc=0;\
618
                        int left=0;\
619
                        static int top[1024];\
620
                        static int last_new[1024][1024];\
621
                        static int last_in3[1024][1024];\
622
                        static int drift[1024][1024];\
623
                        int topLeft=0;\
624
                        int shift=0;\
625
                        int count=0;\
626
                        const uint8_t * const d128=dither_8x8_220[y&7];\
627
                        int error_new=0;\
628
                        int error_in3=0;\
629
                        int f=0;\
630
                        \
631
                        for(i=dstW>>1; i<dstW; i++){\
632
                                int in= ((buf0[i  ]*yalpha1+buf1[i  ]*yalpha)>>19);\
633
                                int in2 = (76309 * (in - 16) + 32768) >> 16;\
634
                                int in3 = (in2 < 0) ? 0 : ((in2 > 255) ? 255 : in2);\
635
                                int old= (left*7 + topLeft + top[i]*5 + top[i+1]*3)/20 + in3\
636
                                        + (last_new[y][i] - in3)*f/256;\
637
                                int new= old> 128 ? 255 : 0;\
638
\
639
                                error_new+= ABS(last_new[y][i] - new);\
640
                                error_in3+= ABS(last_in3[y][i] - in3);\
641
                                f= error_new - error_in3*4;\
642
                                if(f<0) f=0;\
643
                                if(f>256) f=256;\
644
\
645
                                topLeft= top[i];\
646
                                left= top[i]= old - new;\
647
                                last_new[y][i]= new;\
648
                                last_in3[y][i]= in3;\
649
\
650
                                acc+= acc + (new&1);\
651
                                if((i&7)==6){\
652
                                        ((uint8_t*)dest)[0]= acc;\
653
                                        ((uint8_t*)dest)++;\
654
                                }\
655
                        }\
656
}\
657
*/\
658
                }\
659
                break;\
660
        case IMGFMT_YUY2:\
661
                func2\
662
                        ((uint8_t*)dest)[2*i2+0]= Y1;\
663
                        ((uint8_t*)dest)[2*i2+1]= U;\
664
                        ((uint8_t*)dest)[2*i2+2]= Y2;\
665
                        ((uint8_t*)dest)[2*i2+3]= V;\
666
                }                \
667
                break;\
668
        }\
669

    
670

    
671
static inline void yuv2packedXinC(SwsContext *c, int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
672
                                    int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
673
                                    uint8_t *dest, int dstW, int y)
674
{
675
        int i;
676
        switch(c->dstFormat)
677
        {
678
        case IMGFMT_RGB32:
679
        case IMGFMT_BGR32:
680
                YSCALE_YUV_2_RGBX_C(uint32_t)
681
                        ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];
682
                        ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];
683
                }
684
                break;
685
        case IMGFMT_RGB24:
686
                YSCALE_YUV_2_RGBX_C(uint8_t)
687
                        ((uint8_t*)dest)[0]= r[Y1];
688
                        ((uint8_t*)dest)[1]= g[Y1];
689
                        ((uint8_t*)dest)[2]= b[Y1];
690
                        ((uint8_t*)dest)[3]= r[Y2];
691
                        ((uint8_t*)dest)[4]= g[Y2];
692
                        ((uint8_t*)dest)[5]= b[Y2];
693
                        ((uint8_t*)dest)+=6;
694
                }
695
                break;
696
        case IMGFMT_BGR24:
697
                YSCALE_YUV_2_RGBX_C(uint8_t)
698
                        ((uint8_t*)dest)[0]= b[Y1];
699
                        ((uint8_t*)dest)[1]= g[Y1];
700
                        ((uint8_t*)dest)[2]= r[Y1];
701
                        ((uint8_t*)dest)[3]= b[Y2];
702
                        ((uint8_t*)dest)[4]= g[Y2];
703
                        ((uint8_t*)dest)[5]= r[Y2];
704
                        ((uint8_t*)dest)+=6;
705
                }
706
                break;
707
        case IMGFMT_RGB16:
708
        case IMGFMT_BGR16:
709
                {
710
                        const int dr1= dither_2x2_8[y&1    ][0];
711
                        const int dg1= dither_2x2_4[y&1    ][0];
712
                        const int db1= dither_2x2_8[(y&1)^1][0];
713
                        const int dr2= dither_2x2_8[y&1    ][1];
714
                        const int dg2= dither_2x2_4[y&1    ][1];
715
                        const int db2= dither_2x2_8[(y&1)^1][1];
716
                        YSCALE_YUV_2_RGBX_C(uint16_t)
717
                                ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];
718
                                ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];
719
                        }
720
                }
721
                break;
722
        case IMGFMT_RGB15:
723
        case IMGFMT_BGR15:
724
                {
725
                        const int dr1= dither_2x2_8[y&1    ][0];
726
                        const int dg1= dither_2x2_8[y&1    ][1];
727
                        const int db1= dither_2x2_8[(y&1)^1][0];
728
                        const int dr2= dither_2x2_8[y&1    ][1];
729
                        const int dg2= dither_2x2_8[y&1    ][0];
730
                        const int db2= dither_2x2_8[(y&1)^1][1];
731
                        YSCALE_YUV_2_RGBX_C(uint16_t)
732
                                ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];
733
                                ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];
734
                        }
735
                }
736
                break;
737
        case IMGFMT_RGB8:
738
        case IMGFMT_BGR8:
739
                {
740
                        const uint8_t * const d64= dither_8x8_73[y&7];
741
                        const uint8_t * const d32= dither_8x8_32[y&7];
742
                        YSCALE_YUV_2_RGBX_C(uint8_t)
743
                                ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];
744
                                ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];
745
                        }
746
                }
747
                break;
748
        case IMGFMT_RGB4:
749
        case IMGFMT_BGR4:
750
                {
751
                        const uint8_t * const d64= dither_8x8_73 [y&7];
752
                        const uint8_t * const d128=dither_8x8_220[y&7];
753
                        YSCALE_YUV_2_RGBX_C(uint8_t)
754
                                ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];
755
                                ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];
756
                        }
757
                }
758
                break;
759
        case IMGFMT_RGB1:
760
        case IMGFMT_BGR1:
761
                {
762
                        const uint8_t * const d128=dither_8x8_220[y&7];
763
                        uint8_t *g= c->table_gU[128] + c->table_gV[128];
764
                        int acc=0;
765
                        for(i=0; i<dstW-1; i+=2){
766
                                int j;
767
                                int Y1=0;
768
                                int Y2=0;
769

    
770
                                for(j=0; j<lumFilterSize; j++)
771
                                {
772
                                        Y1 += lumSrc[j][i] * lumFilter[j];
773
                                        Y2 += lumSrc[j][i+1] * lumFilter[j];
774
                                }
775
                                Y1>>=19;
776
                                Y2>>=19;
777
                                if((Y1|Y2)&256)
778
                                {
779
                                        if(Y1>255)   Y1=255;
780
                                        else if(Y1<0)Y1=0;
781
                                        if(Y2>255)   Y2=255;
782
                                        else if(Y2<0)Y2=0;
783
                                }
784
                                acc+= acc + g[Y1+d128[(i+0)&7]];
785
                                acc+= acc + g[Y2+d128[(i+1)&7]];
786
                                if((i&7)==6){
787
                                        ((uint8_t*)dest)[0]= acc;
788
                                        ((uint8_t*)dest)++;
789
                                }
790
                        }
791
                }
792
                break;
793
        case IMGFMT_YUY2:
794
                YSCALE_YUV_2_PACKEDX_C(void)
795
                        ((uint8_t*)dest)[2*i2+0]= Y1;
796
                        ((uint8_t*)dest)[2*i2+1]= U;
797
                        ((uint8_t*)dest)[2*i2+2]= Y2;
798
                        ((uint8_t*)dest)[2*i2+3]= V;
799
                }
800
                break;
801
        }
802
}
803

    
804

    
805
//Note: we have C, X86, MMX, MMX2, 3DNOW version therse no 3DNOW+MMX2 one
806
//Plain C versions
807
#if !defined (HAVE_MMX) || defined (RUNTIME_CPUDETECT)
808
#define COMPILE_C
809
#endif
810

    
811
#ifdef CAN_COMPILE_X86_ASM
812

    
813
#if (defined (HAVE_MMX) && !defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)
814
#define COMPILE_MMX
815
#endif
816

    
817
#if defined (HAVE_MMX2) || defined (RUNTIME_CPUDETECT)
818
#define COMPILE_MMX2
819
#endif
820

    
821
#if (defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)
822
#define COMPILE_3DNOW
823
#endif
824
#endif //CAN_COMPILE_X86_ASM
825

    
826
#undef HAVE_MMX
827
#undef HAVE_MMX2
828
#undef HAVE_3DNOW
829

    
830
#ifdef COMPILE_C
831
#undef HAVE_MMX
832
#undef HAVE_MMX2
833
#undef HAVE_3DNOW
834
#define RENAME(a) a ## _C
835
#include "swscale_template.c"
836
#endif
837

    
838
#ifdef CAN_COMPILE_X86_ASM
839

    
840
//X86 versions
841
/*
842
#undef RENAME
843
#undef HAVE_MMX
844
#undef HAVE_MMX2
845
#undef HAVE_3DNOW
846
#define ARCH_X86
847
#define RENAME(a) a ## _X86
848
#include "swscale_template.c"
849
*/
850
//MMX versions
851
#ifdef COMPILE_MMX
852
#undef RENAME
853
#define HAVE_MMX
854
#undef HAVE_MMX2
855
#undef HAVE_3DNOW
856
#define RENAME(a) a ## _MMX
857
#include "swscale_template.c"
858
#endif
859

    
860
//MMX2 versions
861
#ifdef COMPILE_MMX2
862
#undef RENAME
863
#define HAVE_MMX
864
#define HAVE_MMX2
865
#undef HAVE_3DNOW
866
#define RENAME(a) a ## _MMX2
867
#include "swscale_template.c"
868
#endif
869

    
870
//3DNOW versions
871
#ifdef COMPILE_3DNOW
872
#undef RENAME
873
#define HAVE_MMX
874
#undef HAVE_MMX2
875
#define HAVE_3DNOW
876
#define RENAME(a) a ## _3DNow
877
#include "swscale_template.c"
878
#endif
879

    
880
#endif //CAN_COMPILE_X86_ASM
881

    
882
// minor note: the HAVE_xyz is messed up after that line so dont use it
883

    
884

    
885
// old global scaler, dont use for new code
886
// will use sws_flags from the command line
887
void SwScale_YV12slice(unsigned char* src[], int srcStride[], int srcSliceY ,
888
                             int srcSliceH, uint8_t* dst[], int dstStride, int dstbpp,
889
                             int srcW, int srcH, int dstW, int dstH){
890

    
891
        static SwsContext *context=NULL;
892
        int dstFormat;
893
        int dstStride3[3]= {dstStride, dstStride>>1, dstStride>>1};
894

    
895
        switch(dstbpp)
896
        {
897
                case 8 : dstFormat= IMGFMT_Y8;                break;
898
                case 12: dstFormat= IMGFMT_YV12;        break;
899
                case 15: dstFormat= IMGFMT_BGR15;        break;
900
                case 16: dstFormat= IMGFMT_BGR16;        break;
901
                case 24: dstFormat= IMGFMT_BGR24;        break;
902
                case 32: dstFormat= IMGFMT_BGR32;        break;
903
                default: return;
904
        }
905

    
906
        if(!context) context=getSwsContextFromCmdLine(srcW, srcH, IMGFMT_YV12, dstW, dstH, dstFormat);
907

    
908
        context->swScale(context, src, srcStride, srcSliceY, srcSliceH, dst, dstStride3);
909
}
910

    
911
void swsGetFlagsAndFilterFromCmdLine(int *flags, SwsFilter **srcFilterParam, SwsFilter **dstFilterParam)
912
{
913
        static int firstTime=1;
914
        *flags=0;
915

    
916
#ifdef ARCH_X86
917
        if(gCpuCaps.hasMMX)
918
                asm volatile("emms\n\t"::: "memory"); //FIXME this shouldnt be required but it IS (even for non mmx versions)
919
#endif
920
        if(firstTime)
921
        {
922
                firstTime=0;
923
                *flags= SWS_PRINT_INFO;
924
        }
925
        else if(verbose>1) *flags= SWS_PRINT_INFO;
926

    
927
        if(src_filter.lumH) freeVec(src_filter.lumH);
928
        if(src_filter.lumV) freeVec(src_filter.lumV);
929
        if(src_filter.chrH) freeVec(src_filter.chrH);
930
        if(src_filter.chrV) freeVec(src_filter.chrV);
931

    
932
        if(sws_lum_gblur!=0.0){
933
                src_filter.lumH= getGaussianVec(sws_lum_gblur, 3.0);
934
                src_filter.lumV= getGaussianVec(sws_lum_gblur, 3.0);
935
        }else{
936
                src_filter.lumH= getIdentityVec();
937
                src_filter.lumV= getIdentityVec();
938
        }
939

    
940
        if(sws_chr_gblur!=0.0){
941
                src_filter.chrH= getGaussianVec(sws_chr_gblur, 3.0);
942
                src_filter.chrV= getGaussianVec(sws_chr_gblur, 3.0);
943
        }else{
944
                src_filter.chrH= getIdentityVec();
945
                src_filter.chrV= getIdentityVec();
946
        }
947

    
948
        if(sws_chr_sharpen!=0.0){
949
                SwsVector *g= getConstVec(-1.0, 3);
950
                SwsVector *id= getConstVec(10.0/sws_chr_sharpen, 1);
951
                g->coeff[1]=2.0;
952
                addVec(id, g);
953
                convVec(src_filter.chrH, id);
954
                convVec(src_filter.chrV, id);
955
                freeVec(g);
956
                freeVec(id);
957
        }
958

    
959
        if(sws_lum_sharpen!=0.0){
960
                SwsVector *g= getConstVec(-1.0, 3);
961
                SwsVector *id= getConstVec(10.0/sws_lum_sharpen, 1);
962
                g->coeff[1]=2.0;
963
                addVec(id, g);
964
                convVec(src_filter.lumH, id);
965
                convVec(src_filter.lumV, id);
966
                freeVec(g);
967
                freeVec(id);
968
        }
969

    
970
        if(sws_chr_hshift)
971
                shiftVec(src_filter.chrH, sws_chr_hshift);
972

    
973
        if(sws_chr_vshift)
974
                shiftVec(src_filter.chrV, sws_chr_vshift);
975

    
976
        normalizeVec(src_filter.chrH, 1.0);
977
        normalizeVec(src_filter.chrV, 1.0);
978
        normalizeVec(src_filter.lumH, 1.0);
979
        normalizeVec(src_filter.lumV, 1.0);
980

    
981
        if(verbose > 1) printVec(src_filter.chrH);
982
        if(verbose > 1) printVec(src_filter.lumH);
983

    
984
        switch(sws_flags)
985
        {
986
                case 0: *flags|= SWS_FAST_BILINEAR; break;
987
                case 1: *flags|= SWS_BILINEAR; break;
988
                case 2: *flags|= SWS_BICUBIC; break;
989
                case 3: *flags|= SWS_X; break;
990
                case 4: *flags|= SWS_POINT; break;
991
                case 5: *flags|= SWS_AREA; break;
992
                case 6: *flags|= SWS_BICUBLIN; break;
993
                case 7: *flags|= SWS_GAUSS; break;
994
                case 8: *flags|= SWS_SINC; break;
995
                case 9: *flags|= SWS_LANCZOS; break;
996
                case 10:*flags|= SWS_SPLINE; break;
997
                default:*flags|= SWS_BILINEAR; break;
998
        }
999
        
1000
        *srcFilterParam= &src_filter;
1001
        *dstFilterParam= NULL;
1002
}
1003

    
1004
// will use sws_flags & src_filter (from cmd line)
1005
SwsContext *getSwsContextFromCmdLine(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat)
1006
{
1007
        int flags;
1008
        SwsFilter *dstFilterParam, *srcFilterParam;
1009
        swsGetFlagsAndFilterFromCmdLine(&flags, &srcFilterParam, &dstFilterParam);
1010

    
1011
        return getSwsContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat, flags, srcFilterParam, dstFilterParam);
1012
}
1013

    
1014
static double getSplineCoeff(double a, double b, double c, double d, double dist)
1015
{
1016
//        printf("%f %f %f %f %f\n", a,b,c,d,dist);
1017
        if(dist<=1.0)         return ((d*dist + c)*dist + b)*dist +a;
1018
        else                return getSplineCoeff(        0.0, 
1019
                                                 b+ 2.0*c + 3.0*d,
1020
                                                        c + 3.0*d,
1021
                                                -b- 3.0*c - 6.0*d,
1022
                                                dist-1.0);
1023
}
1024

    
1025
static inline void initFilter(int16_t **outFilter, int16_t **filterPos, int *outFilterSize, int xInc,
1026
                              int srcW, int dstW, int filterAlign, int one, int flags,
1027
                              SwsVector *srcFilter, SwsVector *dstFilter)
1028
{
1029
        int i;
1030
        int filterSize;
1031
        int filter2Size;
1032
        int minFilterSize;
1033
        double *filter=NULL;
1034
        double *filter2=NULL;
1035
#ifdef ARCH_X86
1036
        if(gCpuCaps.hasMMX)
1037
                asm volatile("emms\n\t"::: "memory"); //FIXME this shouldnt be required but it IS (even for non mmx versions)
1038
#endif
1039

    
1040
        // Note the +1 is for the MMXscaler which reads over the end
1041
        *filterPos = (int16_t*)memalign(8, (dstW+1)*sizeof(int16_t));
1042

    
1043
        if(ABS(xInc - 0x10000) <10) // unscaled
1044
        {
1045
                int i;
1046
                filterSize= 1;
1047
                filter= (double*)memalign(8, dstW*sizeof(double)*filterSize);
1048
                for(i=0; i<dstW*filterSize; i++) filter[i]=0;
1049

    
1050
                for(i=0; i<dstW; i++)
1051
                {
1052
                        filter[i*filterSize]=1;
1053
                        (*filterPos)[i]=i;
1054
                }
1055

    
1056
        }
1057
        else if(flags&SWS_POINT) // lame looking point sampling mode
1058
        {
1059
                int i;
1060
                int xDstInSrc;
1061
                filterSize= 1;
1062
                filter= (double*)memalign(8, dstW*sizeof(double)*filterSize);
1063
                
1064
                xDstInSrc= xInc/2 - 0x8000;
1065
                for(i=0; i<dstW; i++)
1066
                {
1067
                        int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;
1068

    
1069
                        (*filterPos)[i]= xx;
1070
                        filter[i]= 1.0;
1071
                        xDstInSrc+= xInc;
1072
                }
1073
        }
1074
        else if((xInc <= (1<<16) && (flags&SWS_AREA)) || (flags&SWS_FAST_BILINEAR)) // bilinear upscale
1075
        {
1076
                int i;
1077
                int xDstInSrc;
1078
                if     (flags&SWS_BICUBIC) filterSize= 4;
1079
                else if(flags&SWS_X      ) filterSize= 4;
1080
                else                           filterSize= 2; // SWS_BILINEAR / SWS_AREA 
1081
                filter= (double*)memalign(8, dstW*sizeof(double)*filterSize);
1082

    
1083
                xDstInSrc= xInc/2 - 0x8000;
1084
                for(i=0; i<dstW; i++)
1085
                {
1086
                        int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;
1087
                        int j;
1088

    
1089
                        (*filterPos)[i]= xx;
1090
                                //Bilinear upscale / linear interpolate / Area averaging
1091
                                for(j=0; j<filterSize; j++)
1092
                                {
1093
                                        double d= ABS((xx<<16) - xDstInSrc)/(double)(1<<16);
1094
                                        double coeff= 1.0 - d;
1095
                                        if(coeff<0) coeff=0;
1096
                                        filter[i*filterSize + j]= coeff;
1097
                                        xx++;
1098
                                }
1099
                        xDstInSrc+= xInc;
1100
                }
1101
        }
1102
        else
1103
        {
1104
                double xDstInSrc;
1105
                double sizeFactor, filterSizeInSrc;
1106
                const double xInc1= (double)xInc / (double)(1<<16);
1107
                int param= (flags&SWS_PARAM_MASK)>>SWS_PARAM_SHIFT;
1108

    
1109
                if     (flags&SWS_BICUBIC)        sizeFactor= 4.0;
1110
                else if(flags&SWS_X)                sizeFactor= 8.0;
1111
                else if(flags&SWS_AREA)                sizeFactor= 1.0; //downscale only, for upscale it is bilinear
1112
                else if(flags&SWS_GAUSS)        sizeFactor= 8.0;   // infinite ;)
1113
                else if(flags&SWS_LANCZOS)        sizeFactor= param ? 2.0*param : 6.0;
1114
                else if(flags&SWS_SINC)                sizeFactor= 20.0; // infinite ;)
1115
                else if(flags&SWS_SPLINE)        sizeFactor= 20.0;  // infinite ;)
1116
                else if(flags&SWS_BILINEAR)        sizeFactor= 2.0;
1117
                else {
1118
                        sizeFactor= 0.0; //GCC warning killer
1119
                        ASSERT(0)
1120
                }
1121
                
1122
                if(xInc1 <= 1.0)        filterSizeInSrc= sizeFactor; // upscale
1123
                else                        filterSizeInSrc= sizeFactor*srcW / (double)dstW;
1124

    
1125
                filterSize= (int)ceil(1 + filterSizeInSrc); // will be reduced later if possible
1126
                if(filterSize > srcW-2) filterSize=srcW-2;
1127

    
1128
                filter= (double*)memalign(16, dstW*sizeof(double)*filterSize);
1129

    
1130
                xDstInSrc= xInc1 / 2.0 - 0.5;
1131
                for(i=0; i<dstW; i++)
1132
                {
1133
                        int xx= (int)(xDstInSrc - (filterSize-1)*0.5 + 0.5);
1134
                        int j;
1135
                        (*filterPos)[i]= xx;
1136
                        for(j=0; j<filterSize; j++)
1137
                        {
1138
                                double d= ABS(xx - xDstInSrc)/filterSizeInSrc*sizeFactor;
1139
                                double coeff;
1140
                                if(flags & SWS_BICUBIC)
1141
                                {
1142
                                        double A= param ? -param*0.01 : -0.60;
1143
                                        
1144
                                        // Equation is from VirtualDub
1145
                                        if(d<1.0)
1146
                                                coeff = (1.0 - (A+3.0)*d*d + (A+2.0)*d*d*d);
1147
                                        else if(d<2.0)
1148
                                                coeff = (-4.0*A + 8.0*A*d - 5.0*A*d*d + A*d*d*d);
1149
                                        else
1150
                                                coeff=0.0;
1151
                                }
1152
/*                                else if(flags & SWS_X)
1153
                                {
1154
                                        double p= param ? param*0.01 : 0.3;
1155
                                        coeff = d ? sin(d*PI)/(d*PI) : 1.0;
1156
                                        coeff*= pow(2.0, - p*d*d);
1157
                                }*/
1158
                                else if(flags & SWS_X)
1159
                                {
1160
                                        double A= param ? param*0.1 : 1.0;
1161
                                        
1162
                                        if(d<1.0)
1163
                                                coeff = cos(d*PI);
1164
                                        else
1165
                                                coeff=-1.0;
1166
                                        if(coeff<0.0)         coeff= -pow(-coeff, A);
1167
                                        else                coeff=  pow( coeff, A);
1168
                                        coeff= coeff*0.5 + 0.5;
1169
                                }
1170
                                else if(flags & SWS_AREA)
1171
                                {
1172
                                        double srcPixelSize= 1.0/xInc1;
1173
                                        if(d + srcPixelSize/2 < 0.5) coeff= 1.0;
1174
                                        else if(d - srcPixelSize/2 < 0.5) coeff= (0.5-d)/srcPixelSize + 0.5;
1175
                                        else coeff=0.0;
1176
                                }
1177
                                else if(flags & SWS_GAUSS)
1178
                                {
1179
                                        double p= param ? param*0.1 : 3.0;
1180
                                        coeff = pow(2.0, - p*d*d);
1181
                                }
1182
                                else if(flags & SWS_SINC)
1183
                                {
1184
                                        coeff = d ? sin(d*PI)/(d*PI) : 1.0;
1185
                                }
1186
                                else if(flags & SWS_LANCZOS)
1187
                                {
1188
                                        double p= param ? param : 3.0; 
1189
                                        coeff = d ? sin(d*PI)*sin(d*PI/p)/(d*d*PI*PI/p) : 1.0;
1190
                                        if(d>p) coeff=0;
1191
                                }
1192
                                else if(flags & SWS_BILINEAR)
1193
                                {
1194
                                        coeff= 1.0 - d;
1195
                                        if(coeff<0) coeff=0;
1196
                                }
1197
                                else if(flags & SWS_SPLINE)
1198
                                {
1199
                                        double p=-2.196152422706632;
1200
                                        coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, d);
1201
                                }
1202
                                else {
1203
                                        coeff= 0.0; //GCC warning killer
1204
                                        ASSERT(0)
1205
                                }
1206

    
1207
                                filter[i*filterSize + j]= coeff;
1208
                                xx++;
1209
                        }
1210
                        xDstInSrc+= xInc1;
1211
                }
1212
        }
1213

    
1214
        /* apply src & dst Filter to filter -> filter2
1215
           free(filter);
1216
        */
1217
        ASSERT(filterSize>0)
1218
        filter2Size= filterSize;
1219
        if(srcFilter) filter2Size+= srcFilter->length - 1;
1220
        if(dstFilter) filter2Size+= dstFilter->length - 1;
1221
        ASSERT(filter2Size>0)
1222
        filter2= (double*)memalign(8, filter2Size*dstW*sizeof(double));
1223

    
1224
        for(i=0; i<dstW; i++)
1225
        {
1226
                int j;
1227
                SwsVector scaleFilter;
1228
                SwsVector *outVec;
1229

    
1230
                scaleFilter.coeff= filter + i*filterSize;
1231
                scaleFilter.length= filterSize;
1232

    
1233
                if(srcFilter) outVec= getConvVec(srcFilter, &scaleFilter);
1234
                else              outVec= &scaleFilter;
1235

    
1236
                ASSERT(outVec->length == filter2Size)
1237
                //FIXME dstFilter
1238

    
1239
                for(j=0; j<outVec->length; j++)
1240
                {
1241
                        filter2[i*filter2Size + j]= outVec->coeff[j];
1242
                }
1243

    
1244
                (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;
1245

    
1246
                if(outVec != &scaleFilter) freeVec(outVec);
1247
        }
1248
        free(filter); filter=NULL;
1249

    
1250
        /* try to reduce the filter-size (step1 find size and shift left) */
1251
        // Assume its near normalized (*0.5 or *2.0 is ok but * 0.001 is not)
1252
        minFilterSize= 0;
1253
        for(i=dstW-1; i>=0; i--)
1254
        {
1255
                int min= filter2Size;
1256
                int j;
1257
                double cutOff=0.0;
1258

    
1259
                /* get rid off near zero elements on the left by shifting left */
1260
                for(j=0; j<filter2Size; j++)
1261
                {
1262
                        int k;
1263
                        cutOff += ABS(filter2[i*filter2Size]);
1264

    
1265
                        if(cutOff > SWS_MAX_REDUCE_CUTOFF) break;
1266

    
1267
                        /* preserve Monotonicity because the core cant handle the filter otherwise */
1268
                        if(i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;
1269

    
1270
                        // Move filter coeffs left
1271
                        for(k=1; k<filter2Size; k++)
1272
                                filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k];
1273
                        filter2[i*filter2Size + k - 1]= 0.0;
1274
                        (*filterPos)[i]++;
1275
                }
1276

    
1277
                cutOff=0.0;
1278
                /* count near zeros on the right */
1279
                for(j=filter2Size-1; j>0; j--)
1280
                {
1281
                        cutOff += ABS(filter2[i*filter2Size + j]);
1282

    
1283
                        if(cutOff > SWS_MAX_REDUCE_CUTOFF) break;
1284
                        min--;
1285
                }
1286

    
1287
                if(min>minFilterSize) minFilterSize= min;
1288
        }
1289

    
1290
        ASSERT(minFilterSize > 0)
1291
        filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));
1292
        ASSERT(filterSize > 0)
1293
        filter= (double*)memalign(8, filterSize*dstW*sizeof(double));
1294
        *outFilterSize= filterSize;
1295

    
1296
        if(flags&SWS_PRINT_INFO)
1297
                MSG_INFO("SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);
1298
        /* try to reduce the filter-size (step2 reduce it) */
1299
        for(i=0; i<dstW; i++)
1300
        {
1301
                int j;
1302

    
1303
                for(j=0; j<filterSize; j++)
1304
                {
1305
                        if(j>=filter2Size) filter[i*filterSize + j]= 0.0;
1306
                        else                   filter[i*filterSize + j]= filter2[i*filter2Size + j];
1307
                }
1308
        }
1309
        free(filter2); filter2=NULL;
1310
        
1311

    
1312
        //FIXME try to align filterpos if possible
1313

    
1314
        //fix borders
1315
        for(i=0; i<dstW; i++)
1316
        {
1317
                int j;
1318
                if((*filterPos)[i] < 0)
1319
                {
1320
                        // Move filter coeffs left to compensate for filterPos
1321
                        for(j=1; j<filterSize; j++)
1322
                        {
1323
                                int left= MAX(j + (*filterPos)[i], 0);
1324
                                filter[i*filterSize + left] += filter[i*filterSize + j];
1325
                                filter[i*filterSize + j]=0;
1326
                        }
1327
                        (*filterPos)[i]= 0;
1328
                }
1329

    
1330
                if((*filterPos)[i] + filterSize > srcW)
1331
                {
1332
                        int shift= (*filterPos)[i] + filterSize - srcW;
1333
                        // Move filter coeffs right to compensate for filterPos
1334
                        for(j=filterSize-2; j>=0; j--)
1335
                        {
1336
                                int right= MIN(j + shift, filterSize-1);
1337
                                filter[i*filterSize +right] += filter[i*filterSize +j];
1338
                                filter[i*filterSize +j]=0;
1339
                        }
1340
                        (*filterPos)[i]= srcW - filterSize;
1341
                }
1342
        }
1343

    
1344
        // Note the +1 is for the MMXscaler which reads over the end
1345
        *outFilter= (int16_t*)memalign(8, *outFilterSize*(dstW+1)*sizeof(int16_t));
1346
        memset(*outFilter, 0, *outFilterSize*(dstW+1)*sizeof(int16_t));
1347

    
1348
        /* Normalize & Store in outFilter */
1349
        for(i=0; i<dstW; i++)
1350
        {
1351
                int j;
1352
                double sum=0;
1353
                double scale= one;
1354
                for(j=0; j<filterSize; j++)
1355
                {
1356
                        sum+= filter[i*filterSize + j];
1357
                }
1358
                scale/= sum;
1359
                for(j=0; j<*outFilterSize; j++)
1360
                {
1361
                        (*outFilter)[i*(*outFilterSize) + j]= (int)(filter[i*filterSize + j]*scale);
1362
                }
1363
        }
1364
        
1365
        (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end
1366
        for(i=0; i<*outFilterSize; i++)
1367
        {
1368
                int j= dstW*(*outFilterSize);
1369
                (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];
1370
        }
1371

    
1372
        free(filter);
1373
}
1374

    
1375
#ifdef ARCH_X86
1376
static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode, int16_t *filter, int32_t *filterPos, int numSplits)
1377
{
1378
        uint8_t *fragmentA;
1379
        int imm8OfPShufW1A;
1380
        int imm8OfPShufW2A;
1381
        int fragmentLengthA;
1382
        uint8_t *fragmentB;
1383
        int imm8OfPShufW1B;
1384
        int imm8OfPShufW2B;
1385
        int fragmentLengthB;
1386
        int fragmentPos;
1387

    
1388
        int xpos, i;
1389

    
1390
        // create an optimized horizontal scaling routine
1391

    
1392
        //code fragment
1393

    
1394
        asm volatile(
1395
                "jmp 9f                                \n\t"
1396
        // Begin
1397
                "0:                                \n\t"
1398
                "movq (%%edx, %%eax), %%mm3        \n\t" 
1399
                "movd (%%ecx, %%esi), %%mm0        \n\t" 
1400
                "movd 1(%%ecx, %%esi), %%mm1        \n\t"
1401
                "punpcklbw %%mm7, %%mm1                \n\t"
1402
                "punpcklbw %%mm7, %%mm0                \n\t"
1403
                "pshufw $0xFF, %%mm1, %%mm1        \n\t"
1404
                "1:                                \n\t"
1405
                "pshufw $0xFF, %%mm0, %%mm0        \n\t"
1406
                "2:                                \n\t"
1407
                "psubw %%mm1, %%mm0                \n\t"
1408
                "movl 8(%%ebx, %%eax), %%esi        \n\t"
1409
                "pmullw %%mm3, %%mm0                \n\t"
1410
                "psllw $7, %%mm1                \n\t"
1411
                "paddw %%mm1, %%mm0                \n\t"
1412

    
1413
                "movq %%mm0, (%%edi, %%eax)        \n\t"
1414

    
1415
                "addl $8, %%eax                        \n\t"
1416
        // End
1417
                "9:                                \n\t"
1418
//                "int $3\n\t"
1419
                "leal 0b, %0                        \n\t"
1420
                "leal 1b, %1                        \n\t"
1421
                "leal 2b, %2                        \n\t"
1422
                "decl %1                        \n\t"
1423
                "decl %2                        \n\t"
1424
                "subl %0, %1                        \n\t"
1425
                "subl %0, %2                        \n\t"
1426
                "leal 9b, %3                        \n\t"
1427
                "subl %0, %3                        \n\t"
1428

    
1429

    
1430
                :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),
1431
                "=r" (fragmentLengthA)
1432
        );
1433

    
1434
        asm volatile(
1435
                "jmp 9f                                \n\t"
1436
        // Begin
1437
                "0:                                \n\t"
1438
                "movq (%%edx, %%eax), %%mm3        \n\t" 
1439
                "movd (%%ecx, %%esi), %%mm0        \n\t" 
1440
                "punpcklbw %%mm7, %%mm0                \n\t"
1441
                "pshufw $0xFF, %%mm0, %%mm1        \n\t"
1442
                "1:                                \n\t"
1443
                "pshufw $0xFF, %%mm0, %%mm0        \n\t"
1444
                "2:                                \n\t"
1445
                "psubw %%mm1, %%mm0                \n\t"
1446
                "movl 8(%%ebx, %%eax), %%esi        \n\t"
1447
                "pmullw %%mm3, %%mm0                \n\t"
1448
                "psllw $7, %%mm1                \n\t"
1449
                "paddw %%mm1, %%mm0                \n\t"
1450

    
1451
                "movq %%mm0, (%%edi, %%eax)        \n\t"
1452

    
1453
                "addl $8, %%eax                        \n\t"
1454
        // End
1455
                "9:                                \n\t"
1456
//                "int $3\n\t"
1457
                "leal 0b, %0                        \n\t"
1458
                "leal 1b, %1                        \n\t"
1459
                "leal 2b, %2                        \n\t"
1460
                "decl %1                        \n\t"
1461
                "decl %2                        \n\t"
1462
                "subl %0, %1                        \n\t"
1463
                "subl %0, %2                        \n\t"
1464
                "leal 9b, %3                        \n\t"
1465
                "subl %0, %3                        \n\t"
1466

    
1467

    
1468
                :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),
1469
                "=r" (fragmentLengthB)
1470
        );
1471

    
1472
        xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers
1473
        fragmentPos=0;
1474
        
1475
        for(i=0; i<dstW/numSplits; i++)
1476
        {
1477
                int xx=xpos>>16;
1478

    
1479
                if((i&3) == 0)
1480
                {
1481
                        int a=0;
1482
                        int b=((xpos+xInc)>>16) - xx;
1483
                        int c=((xpos+xInc*2)>>16) - xx;
1484
                        int d=((xpos+xInc*3)>>16) - xx;
1485

    
1486
                        filter[i  ] = (( xpos         & 0xFFFF) ^ 0xFFFF)>>9;
1487
                        filter[i+1] = (((xpos+xInc  ) & 0xFFFF) ^ 0xFFFF)>>9;
1488
                        filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;
1489
                        filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;
1490
                        filterPos[i/2]= xx;
1491

    
1492
                        if(d+1<4)
1493
                        {
1494
                                int maxShift= 3-(d+1);
1495
                                int shift=0;
1496

    
1497
                                memcpy(funnyCode + fragmentPos, fragmentB, fragmentLengthB);
1498

    
1499
                                funnyCode[fragmentPos + imm8OfPShufW1B]=
1500
                                        (a+1) | ((b+1)<<2) | ((c+1)<<4) | ((d+1)<<6);
1501
                                funnyCode[fragmentPos + imm8OfPShufW2B]=
1502
                                        a | (b<<2) | (c<<4) | (d<<6);
1503

    
1504
                                if(i+3>=dstW) shift=maxShift; //avoid overread
1505
                                else if((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align
1506

    
1507
                                if(shift && i>=shift)
1508
                                {
1509
                                        funnyCode[fragmentPos + imm8OfPShufW1B]+= 0x55*shift;
1510
                                        funnyCode[fragmentPos + imm8OfPShufW2B]+= 0x55*shift;
1511
                                        filterPos[i/2]-=shift;
1512
                                }
1513

    
1514
                                fragmentPos+= fragmentLengthB;
1515
                        }
1516
                        else
1517
                        {
1518
                                int maxShift= 3-d;
1519
                                int shift=0;
1520

    
1521
                                memcpy(funnyCode + fragmentPos, fragmentA, fragmentLengthA);
1522

    
1523
                                funnyCode[fragmentPos + imm8OfPShufW1A]=
1524
                                funnyCode[fragmentPos + imm8OfPShufW2A]=
1525
                                        a | (b<<2) | (c<<4) | (d<<6);
1526

    
1527
                                if(i+4>=dstW) shift=maxShift; //avoid overread
1528
                                else if((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //partial align
1529

    
1530
                                if(shift && i>=shift)
1531
                                {
1532
                                        funnyCode[fragmentPos + imm8OfPShufW1A]+= 0x55*shift;
1533
                                        funnyCode[fragmentPos + imm8OfPShufW2A]+= 0x55*shift;
1534
                                        filterPos[i/2]-=shift;
1535
                                }
1536

    
1537
                                fragmentPos+= fragmentLengthA;
1538
                        }
1539

    
1540
                        funnyCode[fragmentPos]= RET;
1541
                }
1542
                xpos+=xInc;
1543
        }
1544
        filterPos[i/2]= xpos>>16; // needed to jump to the next part
1545
}
1546
#endif // ARCH_X86
1547

    
1548
//FIXME remove
1549
void SwScale_Init(){
1550
}
1551

    
1552
static void globalInit(){
1553
    // generating tables:
1554
    int i;
1555
    for(i=0; i<768; i++){
1556
        int c= MIN(MAX(i-256, 0), 255);
1557
        clip_table[i]=c;
1558
    }
1559

    
1560
cpuCaps= gCpuCaps;
1561

    
1562
#ifdef RUNTIME_CPUDETECT
1563
#ifdef CAN_COMPILE_X86_ASM
1564
        // ordered per speed fasterst first
1565
        if(gCpuCaps.hasMMX2)
1566
                swScale= swScale_MMX2;
1567
        else if(gCpuCaps.has3DNow)
1568
                swScale= swScale_3DNow;
1569
        else if(gCpuCaps.hasMMX)
1570
                swScale= swScale_MMX;
1571
        else
1572
                swScale= swScale_C;
1573

    
1574
#else
1575
        swScale= swScale_C;
1576
        cpuCaps.hasMMX2 = cpuCaps.hasMMX = cpuCaps.has3DNow = 0;
1577
#endif
1578
#else //RUNTIME_CPUDETECT
1579
#ifdef HAVE_MMX2
1580
        swScale= swScale_MMX2;
1581
        cpuCaps.has3DNow = 0;
1582
#elif defined (HAVE_3DNOW)
1583
        swScale= swScale_3DNow;
1584
        cpuCaps.hasMMX2 = 0;
1585
#elif defined (HAVE_MMX)
1586
        swScale= swScale_MMX;
1587
        cpuCaps.hasMMX2 = cpuCaps.has3DNow = 0;
1588
#else
1589
        swScale= swScale_C;
1590
        cpuCaps.hasMMX2 = cpuCaps.hasMMX = cpuCaps.has3DNow = 0;
1591
#endif
1592
#endif //!RUNTIME_CPUDETECT
1593
}
1594

    
1595
static void PlanarToNV12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1596
             int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1597
        uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1598
        /* Copy Y plane */
1599
        if(dstStride[0]==srcStride[0])
1600
                memcpy(dst, src[0], srcSliceH*dstStride[0]);
1601
        else
1602
        {
1603
                int i;
1604
                uint8_t *srcPtr= src[0];
1605
                uint8_t *dstPtr= dst;
1606
                for(i=0; i<srcSliceH; i++)
1607
                {
1608
                        memcpy(dstPtr, srcPtr, srcStride[0]);
1609
                        srcPtr+= srcStride[0];
1610
                        dstPtr+= dstStride[0];
1611
                }
1612
        }
1613
        dst = dstParam[1] + dstStride[1]*srcSliceY;
1614
        if(c->srcFormat==IMGFMT_YV12)
1615
                interleaveBytes( src[1],src[2],dst,c->srcW,srcSliceH,srcStride[1],srcStride[2],dstStride[0] );
1616
        else /* I420 & IYUV */
1617
                interleaveBytes( src[2],src[1],dst,c->srcW,srcSliceH,srcStride[2],srcStride[1],dstStride[0] );
1618
}
1619

    
1620

    
1621
/* Warper functions for yuv2bgr */
1622
static void planarYuvToBgr(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1623
             int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1624
        uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1625

    
1626
        if(c->srcFormat==IMGFMT_YV12)
1627
                yuv2rgb( dst,src[0],src[1],src[2],c->srcW,srcSliceH,dstStride[0],srcStride[0],srcStride[1] );
1628
        else /* I420 & IYUV */
1629
                yuv2rgb( dst,src[0],src[2],src[1],c->srcW,srcSliceH,dstStride[0],srcStride[0],srcStride[1] );
1630
}
1631

    
1632
static void PlanarToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1633
             int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1634
        uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1635

    
1636
        if(c->srcFormat==IMGFMT_YV12)
1637
                yv12toyuy2( src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0] );
1638
        else /* I420 & IYUV */
1639
                yv12toyuy2( src[0],src[2],src[1],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0] );
1640
}
1641

    
1642
/* {RGB,BGR}{15,16,24,32} -> {RGB,BGR}{15,16,24,32} */
1643
static void rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1644
                           int srcSliceH, uint8_t* dst[], int dstStride[]){
1645
        const int srcFormat= c->srcFormat;
1646
        const int dstFormat= c->dstFormat;
1647
        const int srcBpp= ((srcFormat&0xFF) + 7)>>3;
1648
        const int dstBpp= ((dstFormat&0xFF) + 7)>>3;
1649
        const int srcId= (srcFormat&0xFF)>>2; // 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 
1650
        const int dstId= (dstFormat&0xFF)>>2;
1651
        void (*conv)(const uint8_t *src, uint8_t *dst, unsigned src_size)=NULL;
1652

    
1653
        /* BGR -> BGR */
1654
        if(isBGR(srcFormat) && isBGR(dstFormat)){
1655
                switch(srcId | (dstId<<4)){
1656
                case 0x34: conv= rgb16to15; break;
1657
                case 0x36: conv= rgb24to15; break;
1658
                case 0x38: conv= rgb32to15; break;
1659
                case 0x43: conv= rgb15to16; break;
1660
                case 0x46: conv= rgb24to16; break;
1661
                case 0x48: conv= rgb32to16; break;
1662
                case 0x63: conv= rgb15to24; break;
1663
                case 0x64: conv= rgb16to24; break;
1664
                case 0x68: conv= rgb32to24; break;
1665
                case 0x83: conv= rgb15to32; break;
1666
                case 0x84: conv= rgb16to32; break;
1667
                case 0x86: conv= rgb24to32; break;
1668
                default: MSG_ERR("swScaler: internal error %s -> %s converter\n", 
1669
                                 vo_format_name(srcFormat), vo_format_name(dstFormat)); break;
1670
                }
1671
        }else if(isBGR(srcFormat) && isRGB(dstFormat)){
1672
                switch(srcId | (dstId<<4)){
1673
                case 0x33: conv= rgb15tobgr15; break;
1674
                case 0x34: conv= rgb16tobgr15; break;
1675
                case 0x36: conv= rgb24tobgr15; break;
1676
                case 0x38: conv= rgb32tobgr15; break;
1677
                case 0x43: conv= rgb15tobgr16; break;
1678
                case 0x44: conv= rgb16tobgr16; break;
1679
                case 0x46: conv= rgb24tobgr16; break;
1680
                case 0x48: conv= rgb32tobgr16; break;
1681
                case 0x63: conv= rgb15tobgr24; break;
1682
                case 0x64: conv= rgb16tobgr24; break;
1683
                case 0x66: conv= rgb24tobgr24; break;
1684
                case 0x68: conv= rgb32tobgr24; break;
1685
                case 0x83: conv= rgb15tobgr32; break;
1686
                case 0x84: conv= rgb16tobgr32; break;
1687
                case 0x86: conv= rgb24tobgr32; break;
1688
                case 0x88: conv= rgb32tobgr32; break;
1689
                default: MSG_ERR("swScaler: internal error %s -> %s converter\n", 
1690
                                 vo_format_name(srcFormat), vo_format_name(dstFormat)); break;
1691
                }
1692
        }else if(isRGB(srcFormat) && isRGB(dstFormat)){
1693
                switch(srcId | (dstId<<4)){
1694
                case 0x34: conv= rgb16to15; break;
1695
                case 0x36: conv= rgb24to15; break;
1696
                case 0x38: conv= rgb32to15; break;
1697
                case 0x43: conv= rgb15to16; break;
1698
                case 0x46: conv= rgb24to16; break;
1699
                case 0x48: conv= rgb32to16; break;
1700
                case 0x63: conv= rgb15to24; break;
1701
                case 0x64: conv= rgb16to24; break;
1702
                case 0x68: conv= rgb32to24; break;
1703
                case 0x83: conv= rgb15to32; break;
1704
                case 0x84: conv= rgb16to32; break;
1705
                case 0x86: conv= rgb24to32; break;
1706
                default: MSG_ERR("swScaler: internal error %s -> %s converter\n", 
1707
                                 vo_format_name(srcFormat), vo_format_name(dstFormat)); break;
1708
                }
1709
        }else if(isRGB(srcFormat) && isBGR(dstFormat)){
1710
                switch(srcId | (dstId<<4)){
1711
                case 0x33: conv= rgb15tobgr15; break;
1712
                case 0x34: conv= rgb16tobgr15; break;
1713
                case 0x36: conv= rgb24tobgr15; break;
1714
                case 0x38: conv= rgb32tobgr15; break;
1715
                case 0x43: conv= rgb15tobgr16; break;
1716
                case 0x44: conv= rgb16tobgr16; break;
1717
                case 0x46: conv= rgb24tobgr16; break;
1718
                case 0x48: conv= rgb32tobgr16; break;
1719
                case 0x63: conv= rgb15tobgr24; break;
1720
                case 0x64: conv= rgb16tobgr24; break;
1721
                case 0x66: conv= rgb24tobgr24; break;
1722
                case 0x68: conv= rgb32tobgr24; break;
1723
                case 0x83: conv= rgb15tobgr32; break;
1724
                case 0x84: conv= rgb16tobgr32; break;
1725
                case 0x86: conv= rgb24tobgr32; break;
1726
                case 0x88: conv= rgb32tobgr32; break;
1727
                default: MSG_ERR("swScaler: internal error %s -> %s converter\n", 
1728
                                 vo_format_name(srcFormat), vo_format_name(dstFormat)); break;
1729
                }
1730
        }
1731
        if(dstStride[0]*srcBpp == srcStride[0]*dstBpp)
1732
                conv(src[0], dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);
1733
        else
1734
        {
1735
                int i;
1736
                uint8_t *srcPtr= src[0];
1737
                uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1738

    
1739
                for(i=0; i<srcSliceH; i++)
1740
                {
1741
                        conv(srcPtr, dstPtr, c->srcW*srcBpp);
1742
                        srcPtr+= srcStride[0];
1743
                        dstPtr+= dstStride[0];
1744
                }
1745
        }     
1746
}
1747

    
1748
static void bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1749
             int srcSliceH, uint8_t* dst[], int dstStride[]){
1750

    
1751
        rgb24toyv12(
1752
                src[0], 
1753
                dst[0]+ srcSliceY    *dstStride[0], 
1754
                dst[1]+(srcSliceY>>1)*dstStride[1], 
1755
                dst[2]+(srcSliceY>>1)*dstStride[2],
1756
                c->srcW, srcSliceH, 
1757
                dstStride[0], dstStride[1], srcStride[0]);
1758
}
1759

    
1760
static void yvu9toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1761
             int srcSliceH, uint8_t* dst[], int dstStride[]){
1762
        int i;
1763

    
1764
        /* copy Y */
1765
        if(srcStride[0]==dstStride[0]) 
1766
                memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);
1767
        else{
1768
                uint8_t *srcPtr= src[0];
1769
                uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1770

    
1771
                for(i=0; i<srcSliceH; i++)
1772
                {
1773
                        memcpy(dstPtr, srcPtr, c->srcW);
1774
                        srcPtr+= srcStride[0];
1775
                        dstPtr+= dstStride[0];
1776
                }
1777
        }
1778

    
1779
        if(c->dstFormat==IMGFMT_YV12){
1780
                planar2x(src[1], dst[1], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[1]);
1781
                planar2x(src[2], dst[2], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[2]);
1782
        }else{
1783
                planar2x(src[1], dst[2], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[2]);
1784
                planar2x(src[2], dst[1], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[1]);
1785
        }
1786
}
1787

    
1788
/**
1789
 * bring pointers in YUV order instead of YVU
1790
 */
1791
static inline void orderYUV(int format, uint8_t * sortedP[], int sortedStride[], uint8_t * p[], int stride[]){
1792
        if(format == IMGFMT_YV12 || format == IMGFMT_YVU9 
1793
           || format == IMGFMT_444P || format == IMGFMT_422P || format == IMGFMT_411P){
1794
                sortedP[0]= p[0];
1795
                sortedP[1]= p[1];
1796
                sortedP[2]= p[2];
1797
                sortedStride[0]= stride[0];
1798
                sortedStride[1]= stride[1];
1799
                sortedStride[2]= stride[2];
1800
        }
1801
        else if(isPacked(format) || isGray(format))
1802
        {
1803
                sortedP[0]= p[0];
1804
                sortedP[1]= 
1805
                sortedP[2]= NULL;
1806
                sortedStride[0]= stride[0];
1807
                sortedStride[1]= 
1808
                sortedStride[2]= 0;
1809
        }
1810
        else if(format == IMGFMT_I420)
1811
        {
1812
                sortedP[0]= p[0];
1813
                sortedP[1]= p[2];
1814
                sortedP[2]= p[1];
1815
                sortedStride[0]= stride[0];
1816
                sortedStride[1]= stride[2];
1817
                sortedStride[2]= stride[1];
1818
        }else{
1819
                MSG_ERR("internal error in orderYUV\n");
1820
        }
1821
}
1822

    
1823
/* unscaled copy like stuff (assumes nearly identical formats) */
1824
static void simpleCopy(SwsContext *c, uint8_t* srcParam[], int srcStrideParam[], int srcSliceY,
1825
             int srcSliceH, uint8_t* dstParam[], int dstStrideParam[]){
1826

    
1827
        int srcStride[3];
1828
        int dstStride[3];
1829
        uint8_t *src[3];
1830
        uint8_t *dst[3];
1831

    
1832
        orderYUV(c->srcFormat, src, srcStride, srcParam, srcStrideParam);
1833
        orderYUV(c->dstFormat, dst, dstStride, dstParam, dstStrideParam);
1834

    
1835
        if(isPacked(c->srcFormat))
1836
        {
1837
                if(dstStride[0]==srcStride[0])
1838
                        memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);
1839
                else
1840
                {
1841
                        int i;
1842
                        uint8_t *srcPtr= src[0];
1843
                        uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1844
                        int length=0;
1845

    
1846
                        /* universal length finder */
1847
                        while(length+c->srcW <= ABS(dstStride[0]) 
1848
                           && length+c->srcW <= ABS(srcStride[0])) length+= c->srcW;
1849
                        ASSERT(length!=0);
1850

    
1851
                        for(i=0; i<srcSliceH; i++)
1852
                        {
1853
                                memcpy(dstPtr, srcPtr, length);
1854
                                srcPtr+= srcStride[0];
1855
                                dstPtr+= dstStride[0];
1856
                        }
1857
                }
1858
        }
1859
        else 
1860
        { /* Planar YUV or gray */
1861
                int plane;
1862
                for(plane=0; plane<3; plane++)
1863
                {
1864
                        int length= plane==0 ? c->srcW  : -((-c->srcW  )>>c->chrDstHSubSample);
1865
                        int y=      plane==0 ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);
1866
                        int height= plane==0 ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);
1867

    
1868
                        if((isGray(c->srcFormat) || isGray(c->dstFormat)) && plane>0)
1869
                        {
1870
                                if(!isGray(c->dstFormat))
1871
                                        memset(dst[plane], 128, dstStride[plane]*height);
1872
                        }
1873
                        else
1874
                        {
1875
                                if(dstStride[plane]==srcStride[plane])
1876
                                        memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);
1877
                                else
1878
                                {
1879
                                        int i;
1880
                                        uint8_t *srcPtr= src[plane];
1881
                                        uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;
1882
                                        for(i=0; i<height; i++)
1883
                                        {
1884
                                                memcpy(dstPtr, srcPtr, length);
1885
                                                srcPtr+= srcStride[plane];
1886
                                                dstPtr+= dstStride[plane];
1887
                                        }
1888
                                }
1889
                        }
1890
                }
1891
        }
1892
}
1893

    
1894
static int remove_dup_fourcc(int fourcc)
1895
{
1896
        switch(fourcc)
1897
        {
1898
            case IMGFMT_IYUV: return IMGFMT_I420;
1899
            case IMGFMT_Y8  : return IMGFMT_Y800;
1900
            case IMGFMT_IF09: return IMGFMT_YVU9;
1901
            default: return fourcc;
1902
        }
1903
}
1904

    
1905
static void getSubSampleFactors(int *h, int *v, int format){
1906
        switch(format){
1907
        case IMGFMT_YUY2:
1908
                *h=1;
1909
                *v=0;
1910
                break;
1911
        case IMGFMT_YV12:
1912
        case IMGFMT_I420:
1913
        case IMGFMT_Y800: //FIXME remove after different subsamplings are fully implemented
1914
                *h=1;
1915
                *v=1;
1916
                break;
1917
        case IMGFMT_YVU9:
1918
                *h=2;
1919
                *v=2;
1920
                break;
1921
        case IMGFMT_444P:
1922
                *h=0;
1923
                *v=0;
1924
                break;
1925
        case IMGFMT_422P:
1926
                *h=1;
1927
                *v=0;
1928
                break;
1929
        case IMGFMT_411P:
1930
                *h=2;
1931
                *v=0;
1932
                break;
1933
        default:
1934
                *h=0;
1935
                *v=0;
1936
                break;
1937
        }
1938
}
1939

    
1940
SwsContext *getSwsContext(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat, int flags,
1941
                         SwsFilter *srcFilter, SwsFilter *dstFilter){
1942

    
1943
        SwsContext *c;
1944
        int i;
1945
        int usesFilter;
1946
        int unscaled, needsDither;
1947
        SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};
1948
#ifdef ARCH_X86
1949
        if(gCpuCaps.hasMMX)
1950
                asm volatile("emms\n\t"::: "memory");
1951
#endif
1952
        if(swScale==NULL) globalInit();
1953
//srcFormat= IMGFMT_Y800;
1954
//dstFormat= IMGFMT_Y800;
1955
        /* avoid dupplicate Formats, so we dont need to check to much */
1956
        srcFormat = remove_dup_fourcc(srcFormat);
1957
        dstFormat = remove_dup_fourcc(dstFormat);
1958

    
1959
        unscaled = (srcW == dstW && srcH == dstH);
1960
        needsDither= (isBGR(dstFormat) || isRGB(dstFormat)) 
1961
                     && (dstFormat&0xFF)<24
1962
                     && ((dstFormat&0xFF)<(srcFormat&0xFF) || (!(isRGB(srcFormat) || isBGR(srcFormat))));
1963

    
1964
        if(!isSupportedIn(srcFormat)) 
1965
        {
1966
                MSG_ERR("swScaler: %s is not supported as input format\n", vo_format_name(srcFormat));
1967
                return NULL;
1968
        }
1969
        if(!isSupportedOut(dstFormat))
1970
        {
1971
                MSG_ERR("swScaler: %s is not supported as output format\n", vo_format_name(dstFormat));
1972
                return NULL;
1973
        }
1974

    
1975
        /* sanity check */
1976
        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
1977
        {
1978
                 MSG_ERR("swScaler: %dx%d -> %dx%d is invalid scaling dimension\n", 
1979
                        srcW, srcH, dstW, dstH);
1980
                return NULL;
1981
        }
1982

    
1983
        if(!dstFilter) dstFilter= &dummyFilter;
1984
        if(!srcFilter) srcFilter= &dummyFilter;
1985

    
1986
        c= memalign(64, sizeof(SwsContext));
1987
        memset(c, 0, sizeof(SwsContext));
1988

    
1989
        c->srcW= srcW;
1990
        c->srcH= srcH;
1991
        c->dstW= dstW;
1992
        c->dstH= dstH;
1993
        c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;
1994
        c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;
1995
        c->flags= flags;
1996
        c->dstFormat= dstFormat;
1997
        c->srcFormat= srcFormat;
1998

    
1999
        usesFilter=0;
2000
        if(dstFilter->lumV!=NULL && dstFilter->lumV->length>1) usesFilter=1;
2001
        if(dstFilter->lumH!=NULL && dstFilter->lumH->length>1) usesFilter=1;
2002
        if(dstFilter->chrV!=NULL && dstFilter->chrV->length>1) usesFilter=1;
2003
        if(dstFilter->chrH!=NULL && dstFilter->chrH->length>1) usesFilter=1;
2004
        if(srcFilter->lumV!=NULL && srcFilter->lumV->length>1) usesFilter=1;
2005
        if(srcFilter->lumH!=NULL && srcFilter->lumH->length>1) usesFilter=1;
2006
        if(srcFilter->chrV!=NULL && srcFilter->chrV->length>1) usesFilter=1;
2007
        if(srcFilter->chrH!=NULL && srcFilter->chrH->length>1) usesFilter=1;
2008

    
2009
        getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);
2010
        getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);
2011

    
2012
        // reuse chroma for 2 pixles rgb/bgr unless user wants full chroma interpolation
2013
        if((isBGR(dstFormat) || isRGB(dstFormat)) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;
2014

    
2015
        // drop some chroma lines if the user wants it
2016
        c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;
2017
        c->chrSrcVSubSample+= c->vChrDrop;
2018

    
2019
        // drop every 2. pixel for chroma calculation unless user wants full chroma
2020
        if((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP)) 
2021
                c->chrSrcHSubSample=1;
2022

    
2023
        c->chrIntHSubSample= c->chrDstHSubSample;
2024
        c->chrIntVSubSample= c->chrSrcVSubSample;
2025
        
2026
        // note the -((-x)>>y) is so that we allways round toward +inf
2027
        c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);
2028
        c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);
2029
        c->chrDstW= -((-dstW) >> c->chrDstHSubSample);
2030
        c->chrDstH= -((-dstH) >> c->chrDstVSubSample);
2031
        
2032
        if(isBGR(dstFormat))
2033
                c->yuvTable= yuv2rgb_c_init(dstFormat & 0xFF, MODE_RGB, c->table_rV, c->table_gU, c->table_gV, c->table_bU);
2034
        if(isRGB(dstFormat))
2035
                c->yuvTable= yuv2rgb_c_init(dstFormat & 0xFF, MODE_BGR, c->table_rV, c->table_gU, c->table_gV, c->table_bU);
2036

    
2037
        /* unscaled special Cases */
2038
        if(unscaled && !usesFilter)
2039
        {
2040
                /* yv12_to_nv12 */
2041
                if((srcFormat == IMGFMT_YV12||srcFormat==IMGFMT_I420)&&dstFormat == IMGFMT_NV12)
2042
                {
2043
                        c->swScale= PlanarToNV12Wrapper;
2044

    
2045
                        if(flags&SWS_PRINT_INFO)
2046
                                MSG_INFO("SwScaler: using unscaled %s -> %s special converter\n", 
2047
                                        vo_format_name(srcFormat), vo_format_name(dstFormat));
2048
                        return c;
2049
                }
2050
                /* yuv2bgr */
2051
                if((srcFormat==IMGFMT_YV12 || srcFormat==IMGFMT_I420) && isBGR(dstFormat))
2052
                {
2053
                        // FIXME multiple yuv2rgb converters wont work that way cuz that thing is full of globals&statics
2054
                        //FIXME rgb vs. bgr ? 
2055
#ifdef WORDS_BIGENDIAN
2056
                        if(dstFormat==IMGFMT_BGR32)
2057
                                yuv2rgb_init( dstFormat&0xFF /* =bpp */, MODE_BGR);
2058
                        else
2059
                                yuv2rgb_init( dstFormat&0xFF /* =bpp */, MODE_RGB);
2060
#else
2061
                        yuv2rgb_init( dstFormat&0xFF /* =bpp */, MODE_RGB);
2062
#endif
2063
                        c->swScale= planarYuvToBgr;
2064

    
2065
                        if(flags&SWS_PRINT_INFO)
2066
                                MSG_INFO("SwScaler: using unscaled %s -> %s special converter\n", 
2067
                                        vo_format_name(srcFormat), vo_format_name(dstFormat));
2068
                        return c;
2069
                }
2070
                
2071
                /* simple copy */
2072
                if(   srcFormat == dstFormat
2073
                   || (srcFormat==IMGFMT_YV12 && dstFormat==IMGFMT_I420)
2074
                   || (srcFormat==IMGFMT_I420 && dstFormat==IMGFMT_YV12)
2075
                   || (isPlanarYUV(srcFormat) && isGray(dstFormat))
2076
                   || (isPlanarYUV(dstFormat) && isGray(srcFormat))
2077
                  )
2078
                {
2079
                        c->swScale= simpleCopy;
2080

    
2081
                        if(flags&SWS_PRINT_INFO)
2082
                                MSG_INFO("SwScaler: using unscaled %s -> %s special converter\n", 
2083
                                        vo_format_name(srcFormat), vo_format_name(dstFormat));
2084
                        return c;
2085
                }
2086
                
2087
                if( srcFormat==IMGFMT_YVU9 && (dstFormat==IMGFMT_YV12 || dstFormat==IMGFMT_I420) )
2088
                {
2089
                        c->swScale= yvu9toyv12Wrapper;
2090

    
2091
                        if(flags&SWS_PRINT_INFO)
2092
                                MSG_INFO("SwScaler: using unscaled %s -> %s special converter\n", 
2093
                                        vo_format_name(srcFormat), vo_format_name(dstFormat));
2094
                        return c;
2095
                }
2096

    
2097
                /* bgr24toYV12 */
2098
                if(srcFormat==IMGFMT_BGR24 && dstFormat==IMGFMT_YV12)
2099
                        c->swScale= bgr24toyv12Wrapper;
2100
                
2101
                /* rgb/bgr -> rgb/bgr (no dither needed forms) */
2102
                if(   (isBGR(srcFormat) || isRGB(srcFormat))
2103
                   && (isBGR(dstFormat) || isRGB(dstFormat)) 
2104
                   && !needsDither)
2105
                        c->swScale= rgb2rgbWrapper;
2106

    
2107
                /* LQ converters if -sws 0 or -sws 4*/
2108
                if(c->flags&(SWS_FAST_BILINEAR|SWS_POINT)){
2109
                        /* rgb/bgr -> rgb/bgr (dither needed forms) */
2110
                        if(  (isBGR(srcFormat) || isRGB(srcFormat))
2111
                          && (isBGR(dstFormat) || isRGB(dstFormat)) 
2112
                          && needsDither)
2113
                                c->swScale= rgb2rgbWrapper;
2114

    
2115
                        /* yv12_to_yuy2 */
2116
                        if((srcFormat == IMGFMT_YV12||srcFormat==IMGFMT_I420)&&dstFormat == IMGFMT_YUY2)
2117
                        {
2118
                                c->swScale= PlanarToYuy2Wrapper;
2119

    
2120
                                if(flags&SWS_PRINT_INFO)
2121
                                        MSG_INFO("SwScaler: using unscaled %s -> %s special converter\n", 
2122
                                                vo_format_name(srcFormat), vo_format_name(dstFormat));
2123
                                return c;
2124
                        }
2125
                }
2126

    
2127
                if(c->swScale){
2128
                        if(flags&SWS_PRINT_INFO)
2129
                                MSG_INFO("SwScaler: using unscaled %s -> %s special converter\n", 
2130
                                        vo_format_name(srcFormat), vo_format_name(dstFormat));
2131
                        return c;
2132
                }
2133
        }
2134

    
2135
        if(cpuCaps.hasMMX2)
2136
        {
2137
                c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;
2138
                if(!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR))
2139
                {
2140
                        if(flags&SWS_PRINT_INFO)
2141
                                MSG_INFO("SwScaler: output Width is not a multiple of 32 -> no MMX2 scaler\n");
2142
                }
2143
        }
2144
        else
2145
                c->canMMX2BeUsed=0;
2146

    
2147
        c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;
2148
        c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;
2149

    
2150
        // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst
2151
        // but only for the FAST_BILINEAR mode otherwise do correct scaling
2152
        // n-2 is the last chrominance sample available
2153
        // this is not perfect, but noone shuld notice the difference, the more correct variant
2154
        // would be like the vertical one, but that would require some special code for the
2155
        // first and last pixel
2156
        if(flags&SWS_FAST_BILINEAR)
2157
        {
2158
                if(c->canMMX2BeUsed)
2159
                {
2160
                        c->lumXInc+= 20;
2161
                        c->chrXInc+= 20;
2162
                }
2163
                //we dont use the x86asm scaler if mmx is available
2164
                else if(cpuCaps.hasMMX)
2165
                {
2166
                        c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;
2167
                        c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;
2168
                }
2169
        }
2170

    
2171
        /* precalculate horizontal scaler filter coefficients */
2172
        {
2173
                const int filterAlign= cpuCaps.hasMMX ? 4 : 1;
2174

    
2175
                initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,
2176
                                 srcW      ,       dstW, filterAlign, 1<<14,
2177
                                 (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,
2178
                                 srcFilter->lumH, dstFilter->lumH);
2179
                initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,
2180
                                 c->chrSrcW, c->chrDstW, filterAlign, 1<<14,
2181
                                 (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
2182
                                 srcFilter->chrH, dstFilter->chrH);
2183

    
2184
#ifdef ARCH_X86
2185
// cant downscale !!!
2186
                if(c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR))
2187
                {
2188
                        c->lumMmx2Filter   = (int16_t*)memalign(8, (dstW        /8+8)*sizeof(int16_t));
2189
                        c->chrMmx2Filter   = (int16_t*)memalign(8, (c->chrDstW  /4+8)*sizeof(int16_t));
2190
                        c->lumMmx2FilterPos= (int32_t*)memalign(8, (dstW      /2/8+8)*sizeof(int32_t));
2191
                        c->chrMmx2FilterPos= (int32_t*)memalign(8, (c->chrDstW/2/4+8)*sizeof(int32_t));
2192

    
2193
                        initMMX2HScaler(      dstW, c->lumXInc, c->funnyYCode , c->lumMmx2Filter, c->lumMmx2FilterPos, 8);
2194
                        initMMX2HScaler(c->chrDstW, c->chrXInc, c->funnyUVCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);
2195
                }
2196
#endif
2197
        } // Init Horizontal stuff
2198

    
2199

    
2200

    
2201
        /* precalculate vertical scaler filter coefficients */
2202
        initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,
2203
                        srcH      ,        dstH, 1, (1<<12)-4,
2204
                        (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,
2205
                        srcFilter->lumV, dstFilter->lumV);
2206
        initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,
2207
                        c->chrSrcH, c->chrDstH, 1, (1<<12)-4,
2208
                        (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
2209
                        srcFilter->chrV, dstFilter->chrV);
2210

    
2211
        // Calculate Buffer Sizes so that they wont run out while handling these damn slices
2212
        c->vLumBufSize= c->vLumFilterSize;
2213
        c->vChrBufSize= c->vChrFilterSize;
2214
        for(i=0; i<dstH; i++)
2215
        {
2216
                int chrI= i*c->chrDstH / dstH;
2217
                int nextSlice= MAX(c->vLumFilterPos[i   ] + c->vLumFilterSize - 1,
2218
                                 ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));
2219
                nextSlice&= ~3; // Slices start at boundaries which are divisable through 4
2220
                if(c->vLumFilterPos[i   ] + c->vLumBufSize < nextSlice)
2221
                        c->vLumBufSize= nextSlice - c->vLumFilterPos[i   ];
2222
                if(c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample))
2223
                        c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI];
2224
        }
2225

    
2226
        // allocate pixbufs (we use dynamic allocation because otherwise we would need to
2227
        c->lumPixBuf= (int16_t**)memalign(4, c->vLumBufSize*2*sizeof(int16_t*));
2228
        c->chrPixBuf= (int16_t**)memalign(4, c->vChrBufSize*2*sizeof(int16_t*));
2229
        //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)
2230
        for(i=0; i<c->vLumBufSize; i++)
2231
                c->lumPixBuf[i]= c->lumPixBuf[i+c->vLumBufSize]= (uint16_t*)memalign(8, 4000);
2232
        for(i=0; i<c->vChrBufSize; i++)
2233
                c->chrPixBuf[i]= c->chrPixBuf[i+c->vChrBufSize]= (uint16_t*)memalign(8, 8000);
2234

    
2235
        //try to avoid drawing green stuff between the right end and the stride end
2236
        for(i=0; i<c->vLumBufSize; i++) memset(c->lumPixBuf[i], 0, 4000);
2237
        for(i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, 8000);
2238

    
2239
        ASSERT(c->chrDstH <= dstH)
2240

    
2241
        // pack filter data for mmx code
2242
        if(cpuCaps.hasMMX)
2243
        {
2244
                c->lumMmxFilter= (int16_t*)memalign(8, c->vLumFilterSize*      dstH*4*sizeof(int16_t));
2245
                c->chrMmxFilter= (int16_t*)memalign(8, c->vChrFilterSize*c->chrDstH*4*sizeof(int16_t));
2246
                for(i=0; i<c->vLumFilterSize*dstH; i++)
2247
                        c->lumMmxFilter[4*i]=c->lumMmxFilter[4*i+1]=c->lumMmxFilter[4*i+2]=c->lumMmxFilter[4*i+3]=
2248
                                c->vLumFilter[i];
2249
                for(i=0; i<c->vChrFilterSize*c->chrDstH; i++)
2250
                        c->chrMmxFilter[4*i]=c->chrMmxFilter[4*i+1]=c->chrMmxFilter[4*i+2]=c->chrMmxFilter[4*i+3]=
2251
                                c->vChrFilter[i];
2252
        }
2253

    
2254
        if(flags&SWS_PRINT_INFO)
2255
        {
2256
#ifdef DITHER1XBPP
2257
                char *dither= " dithered";
2258
#else
2259
                char *dither= "";
2260
#endif
2261
                if(flags&SWS_FAST_BILINEAR)
2262
                        MSG_INFO("\nSwScaler: FAST_BILINEAR scaler, ");
2263
                else if(flags&SWS_BILINEAR)
2264
                        MSG_INFO("\nSwScaler: BILINEAR scaler, ");
2265
                else if(flags&SWS_BICUBIC)
2266
                        MSG_INFO("\nSwScaler: BICUBIC scaler, ");
2267
                else if(flags&SWS_X)
2268
                        MSG_INFO("\nSwScaler: Experimental scaler, ");
2269
                else if(flags&SWS_POINT)
2270
                        MSG_INFO("\nSwScaler: Nearest Neighbor / POINT scaler, ");
2271
                else if(flags&SWS_AREA)
2272
                        MSG_INFO("\nSwScaler: Area Averageing scaler, ");
2273
                else if(flags&SWS_BICUBLIN)
2274
                        MSG_INFO("\nSwScaler: luma BICUBIC / chroma BILINEAR scaler, ");
2275
                else if(flags&SWS_GAUSS)
2276
                        MSG_INFO("\nSwScaler: Gaussian scaler, ");
2277
                else if(flags&SWS_SINC)
2278
                        MSG_INFO("\nSwScaler: Sinc scaler, ");
2279
                else if(flags&SWS_LANCZOS)
2280
                        MSG_INFO("\nSwScaler: Lanczos scaler, ");
2281
                else if(flags&SWS_SPLINE)
2282
                        MSG_INFO("\nSwScaler: Bicubic spline scaler, ");
2283
                else
2284
                        MSG_INFO("\nSwScaler: ehh flags invalid?! ");
2285

    
2286
                if(dstFormat==IMGFMT_BGR15 || dstFormat==IMGFMT_BGR16)
2287
                        MSG_INFO("from %s to%s %s ", 
2288
                                vo_format_name(srcFormat), dither, vo_format_name(dstFormat));
2289
                else
2290
                        MSG_INFO("from %s to %s ", 
2291
                                vo_format_name(srcFormat), vo_format_name(dstFormat));
2292

    
2293
                if(cpuCaps.hasMMX2)
2294
                        MSG_INFO("using MMX2\n");
2295
                else if(cpuCaps.has3DNow)
2296
                        MSG_INFO("using 3DNOW\n");
2297
                else if(cpuCaps.hasMMX)
2298
                        MSG_INFO("using MMX\n");
2299
                else
2300
                        MSG_INFO("using C\n");
2301
        }
2302

    
2303
        if((flags & SWS_PRINT_INFO) && verbose>0)
2304
        {
2305
                if(cpuCaps.hasMMX)
2306
                {
2307
                        if(c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))
2308
                                MSG_V("SwScaler: using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");
2309
                        else
2310
                        {
2311
                                if(c->hLumFilterSize==4)
2312
                                        MSG_V("SwScaler: using 4-tap MMX scaler for horizontal luminance scaling\n");
2313
                                else if(c->hLumFilterSize==8)
2314
                                        MSG_V("SwScaler: using 8-tap MMX scaler for horizontal luminance scaling\n");
2315
                                else
2316
                                        MSG_V("SwScaler: using n-tap MMX scaler for horizontal luminance scaling\n");
2317

    
2318
                                if(c->hChrFilterSize==4)
2319
                                        MSG_V("SwScaler: using 4-tap MMX scaler for horizontal chrominance scaling\n");
2320
                                else if(c->hChrFilterSize==8)
2321
                                        MSG_V("SwScaler: using 8-tap MMX scaler for horizontal chrominance scaling\n");
2322
                                else
2323
                                        MSG_V("SwScaler: using n-tap MMX scaler for horizontal chrominance scaling\n");
2324
                        }
2325
                }
2326
                else
2327
                {
2328
#ifdef ARCH_X86
2329
                        MSG_V("SwScaler: using X86-Asm scaler for horizontal scaling\n");
2330
#else
2331
                        if(flags & SWS_FAST_BILINEAR)
2332
                                MSG_V("SwScaler: using FAST_BILINEAR C scaler for horizontal scaling\n");
2333
                        else
2334
                                MSG_V("SwScaler: using C scaler for horizontal scaling\n");
2335
#endif
2336
                }
2337
                if(isPlanarYUV(dstFormat))
2338
                {
2339
                        if(c->vLumFilterSize==1)
2340
                                MSG_V("SwScaler: using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", cpuCaps.hasMMX ? "MMX" : "C");
2341
                        else
2342
                                MSG_V("SwScaler: using n-tap %s scaler for vertical scaling (YV12 like)\n", cpuCaps.hasMMX ? "MMX" : "C");
2343
                }
2344
                else
2345
                {
2346
                        if(c->vLumFilterSize==1 && c->vChrFilterSize==2)
2347
                                MSG_V("SwScaler: using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"
2348
                                       "SwScaler:       2-tap scaler for vertical chrominance scaling (BGR)\n",cpuCaps.hasMMX ? "MMX" : "C");
2349
                        else if(c->vLumFilterSize==2 && c->vChrFilterSize==2)
2350
                                MSG_V("SwScaler: using 2-tap linear %s scaler for vertical scaling (BGR)\n", cpuCaps.hasMMX ? "MMX" : "C");
2351
                        else
2352
                                MSG_V("SwScaler: using n-tap %s scaler for vertical scaling (BGR)\n", cpuCaps.hasMMX ? "MMX" : "C");
2353
                }
2354

    
2355
                if(dstFormat==IMGFMT_BGR24)
2356
                        MSG_V("SwScaler: using %s YV12->BGR24 Converter\n",
2357
                                cpuCaps.hasMMX2 ? "MMX2" : (cpuCaps.hasMMX ? "MMX" : "C"));
2358
                else if(dstFormat==IMGFMT_BGR32)
2359
                        MSG_V("SwScaler: using %s YV12->BGR32 Converter\n", cpuCaps.hasMMX ? "MMX" : "C");
2360
                else if(dstFormat==IMGFMT_BGR16)
2361
                        MSG_V("SwScaler: using %s YV12->BGR16 Converter\n", cpuCaps.hasMMX ? "MMX" : "C");
2362
                else if(dstFormat==IMGFMT_BGR15)
2363
                        MSG_V("SwScaler: using %s YV12->BGR15 Converter\n", cpuCaps.hasMMX ? "MMX" : "C");
2364

    
2365
                MSG_V("SwScaler: %dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);
2366
        }
2367
        if((flags & SWS_PRINT_INFO) && verbose>1)
2368
        {
2369
                MSG_DBG2("SwScaler:Lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
2370
                        c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);
2371
                MSG_DBG2("SwScaler:Chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
2372
                        c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);
2373
        }
2374

    
2375
        c->swScale= swScale;
2376
        return c;
2377
}
2378

    
2379
/**
2380
 * returns a normalized gaussian curve used to filter stuff
2381
 * quality=3 is high quality, lowwer is lowwer quality
2382
 */
2383

    
2384
SwsVector *getGaussianVec(double variance, double quality){
2385
        const int length= (int)(variance*quality + 0.5) | 1;
2386
        int i;
2387
        double *coeff= memalign(sizeof(double), length*sizeof(double));
2388
        double middle= (length-1)*0.5;
2389
        SwsVector *vec= malloc(sizeof(SwsVector));
2390

    
2391
        vec->coeff= coeff;
2392
        vec->length= length;
2393

    
2394
        for(i=0; i<length; i++)
2395
        {
2396
                double dist= i-middle;
2397
                coeff[i]= exp( -dist*dist/(2*variance*variance) ) / sqrt(2*variance*PI);
2398
        }
2399

    
2400
        normalizeVec(vec, 1.0);
2401

    
2402
        return vec;
2403
}
2404

    
2405
SwsVector *getConstVec(double c, int length){
2406
        int i;
2407
        double *coeff= memalign(sizeof(double), length*sizeof(double));
2408
        SwsVector *vec= malloc(sizeof(SwsVector));
2409

    
2410
        vec->coeff= coeff;
2411
        vec->length= length;
2412

    
2413
        for(i=0; i<length; i++)
2414
                coeff[i]= c;
2415

    
2416
        return vec;
2417
}
2418

    
2419

    
2420
SwsVector *getIdentityVec(void){
2421
        double *coeff= memalign(sizeof(double), sizeof(double));
2422
        SwsVector *vec= malloc(sizeof(SwsVector));
2423
        coeff[0]= 1.0;
2424

    
2425
        vec->coeff= coeff;
2426
        vec->length= 1;
2427

    
2428
        return vec;
2429
}
2430

    
2431
void normalizeVec(SwsVector *a, double height){
2432
        int i;
2433
        double sum=0;
2434
        double inv;
2435

    
2436
        for(i=0; i<a->length; i++)
2437
                sum+= a->coeff[i];
2438

    
2439
        inv= height/sum;
2440

    
2441
        for(i=0; i<a->length; i++)
2442
                a->coeff[i]*= height;
2443
}
2444

    
2445
void scaleVec(SwsVector *a, double scalar){
2446
        int i;
2447

    
2448
        for(i=0; i<a->length; i++)
2449
                a->coeff[i]*= scalar;
2450
}
2451

    
2452
static SwsVector *getConvVec(SwsVector *a, SwsVector *b){
2453
        int length= a->length + b->length - 1;
2454
        double *coeff= memalign(sizeof(double), length*sizeof(double));
2455
        int i, j;
2456
        SwsVector *vec= malloc(sizeof(SwsVector));
2457

    
2458
        vec->coeff= coeff;
2459
        vec->length= length;
2460

    
2461
        for(i=0; i<length; i++) coeff[i]= 0.0;
2462

    
2463
        for(i=0; i<a->length; i++)
2464
        {
2465
                for(j=0; j<b->length; j++)
2466
                {
2467
                        coeff[i+j]+= a->coeff[i]*b->coeff[j];
2468
                }
2469
        }
2470

    
2471
        return vec;
2472
}
2473

    
2474
static SwsVector *sumVec(SwsVector *a, SwsVector *b){
2475
        int length= MAX(a->length, b->length);
2476
        double *coeff= memalign(sizeof(double), length*sizeof(double));
2477
        int i;
2478
        SwsVector *vec= malloc(sizeof(SwsVector));
2479

    
2480
        vec->coeff= coeff;
2481
        vec->length= length;
2482

    
2483
        for(i=0; i<length; i++) coeff[i]= 0.0;
2484

    
2485
        for(i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];
2486
        for(i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];
2487

    
2488
        return vec;
2489
}
2490

    
2491
static SwsVector *diffVec(SwsVector *a, SwsVector *b){
2492
        int length= MAX(a->length, b->length);
2493
        double *coeff= memalign(sizeof(double), length*sizeof(double));
2494
        int i;
2495
        SwsVector *vec= malloc(sizeof(SwsVector));
2496

    
2497
        vec->coeff= coeff;
2498
        vec->length= length;
2499

    
2500
        for(i=0; i<length; i++) coeff[i]= 0.0;
2501

    
2502
        for(i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];
2503
        for(i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];
2504

    
2505
        return vec;
2506
}
2507

    
2508
/* shift left / or right if "shift" is negative */
2509
static SwsVector *getShiftedVec(SwsVector *a, int shift){
2510
        int length= a->length + ABS(shift)*2;
2511
        double *coeff= memalign(sizeof(double), length*sizeof(double));
2512
        int i;
2513
        SwsVector *vec= malloc(sizeof(SwsVector));
2514

    
2515
        vec->coeff= coeff;
2516
        vec->length= length;
2517

    
2518
        for(i=0; i<length; i++) coeff[i]= 0.0;
2519

    
2520
        for(i=0; i<a->length; i++)
2521
        {
2522
                coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];
2523
        }
2524

    
2525
        return vec;
2526
}
2527

    
2528
void shiftVec(SwsVector *a, int shift){
2529
        SwsVector *shifted= getShiftedVec(a, shift);
2530
        free(a->coeff);
2531
        a->coeff= shifted->coeff;
2532
        a->length= shifted->length;
2533
        free(shifted);
2534
}
2535

    
2536
void addVec(SwsVector *a, SwsVector *b){
2537
        SwsVector *sum= sumVec(a, b);
2538
        free(a->coeff);
2539
        a->coeff= sum->coeff;
2540
        a->length= sum->length;
2541
        free(sum);
2542
}
2543

    
2544
void subVec(SwsVector *a, SwsVector *b){
2545
        SwsVector *diff= diffVec(a, b);
2546
        free(a->coeff);
2547
        a->coeff= diff->coeff;
2548
        a->length= diff->length;
2549
        free(diff);
2550
}
2551

    
2552
void convVec(SwsVector *a, SwsVector *b){
2553
        SwsVector *conv= getConvVec(a, b);
2554
        free(a->coeff);
2555
        a->coeff= conv->coeff;
2556
        a->length= conv->length;
2557
        free(conv);
2558
}
2559

    
2560
SwsVector *cloneVec(SwsVector *a){
2561
        double *coeff= memalign(sizeof(double), a->length*sizeof(double));
2562
        int i;
2563
        SwsVector *vec= malloc(sizeof(SwsVector));
2564

    
2565
        vec->coeff= coeff;
2566
        vec->length= a->length;
2567

    
2568
        for(i=0; i<a->length; i++) coeff[i]= a->coeff[i];
2569

    
2570
        return vec;
2571
}
2572

    
2573
void printVec(SwsVector *a){
2574
        int i;
2575
        double max=0;
2576
        double min=0;
2577
        double range;
2578

    
2579
        for(i=0; i<a->length; i++)
2580
                if(a->coeff[i]>max) max= a->coeff[i];
2581

    
2582
        for(i=0; i<a->length; i++)
2583
                if(a->coeff[i]<min) min= a->coeff[i];
2584

    
2585
        range= max - min;
2586

    
2587
        for(i=0; i<a->length; i++)
2588
        {
2589
                int x= (int)((a->coeff[i]-min)*60.0/range +0.5);
2590
                MSG_DBG2("%1.3f ", a->coeff[i]);
2591
                for(;x>0; x--) MSG_DBG2(" ");
2592
                MSG_DBG2("|\n");
2593
        }
2594
}
2595

    
2596
void freeVec(SwsVector *a){
2597
        if(!a) return;
2598
        if(a->coeff) free(a->coeff);
2599
        a->coeff=NULL;
2600
        a->length=0;
2601
        free(a);
2602
}
2603

    
2604
void freeSwsContext(SwsContext *c){
2605
        int i;
2606
        if(!c) return;
2607

    
2608
        if(c->lumPixBuf)
2609
        {
2610
                for(i=0; i<c->vLumBufSize; i++)
2611
                {
2612
                        if(c->lumPixBuf[i]) free(c->lumPixBuf[i]);
2613
                        c->lumPixBuf[i]=NULL;
2614
                }
2615
                free(c->lumPixBuf);
2616
                c->lumPixBuf=NULL;
2617
        }
2618

    
2619
        if(c->chrPixBuf)
2620
        {
2621
                for(i=0; i<c->vChrBufSize; i++)
2622
                {
2623
                        if(c->chrPixBuf[i]) free(c->chrPixBuf[i]);
2624
                        c->chrPixBuf[i]=NULL;
2625
                }
2626
                free(c->chrPixBuf);
2627
                c->chrPixBuf=NULL;
2628
        }
2629

    
2630
        if(c->vLumFilter) free(c->vLumFilter);
2631
        c->vLumFilter = NULL;
2632
        if(c->vChrFilter) free(c->vChrFilter);
2633
        c->vChrFilter = NULL;
2634
        if(c->hLumFilter) free(c->hLumFilter);
2635
        c->hLumFilter = NULL;
2636
        if(c->hChrFilter) free(c->hChrFilter);
2637
        c->hChrFilter = NULL;
2638

    
2639
        if(c->vLumFilterPos) free(c->vLumFilterPos);
2640
        c->vLumFilterPos = NULL;
2641
        if(c->vChrFilterPos) free(c->vChrFilterPos);
2642
        c->vChrFilterPos = NULL;
2643
        if(c->hLumFilterPos) free(c->hLumFilterPos);
2644
        c->hLumFilterPos = NULL;
2645
        if(c->hChrFilterPos) free(c->hChrFilterPos);
2646
        c->hChrFilterPos = NULL;
2647

    
2648
        if(c->lumMmxFilter) free(c->lumMmxFilter);
2649
        c->lumMmxFilter = NULL;
2650
        if(c->chrMmxFilter) free(c->chrMmxFilter);
2651
        c->chrMmxFilter = NULL;
2652

    
2653
        if(c->lumMmx2Filter) free(c->lumMmx2Filter);
2654
        c->lumMmx2Filter=NULL;
2655
        if(c->chrMmx2Filter) free(c->chrMmx2Filter);
2656
        c->chrMmx2Filter=NULL;
2657
        if(c->lumMmx2FilterPos) free(c->lumMmx2FilterPos);
2658
        c->lumMmx2FilterPos=NULL;
2659
        if(c->chrMmx2FilterPos) free(c->chrMmx2FilterPos);
2660
        c->chrMmx2FilterPos=NULL;
2661
        if(c->yuvTable) free(c->yuvTable);
2662
        c->yuvTable=NULL;
2663

    
2664
        free(c);
2665
}
2666

    
2667