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/*
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 * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg 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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 *
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 * FFmpeg 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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 *
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 * You should have received a copy of the GNU General Public License
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 * along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 *
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 * the C code (not assembly, mmx, ...) of this file can be used
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 * under the LGPL license too
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 */
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/*
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  supported Input formats: YV12, I420/IYUV, YUY2, UYVY, BGR32, BGR32_1, BGR24, BGR16, BGR15, RGB32, RGB32_1, RGB24, Y8/Y800, YVU9/IF09, PAL8
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  supported output formats: YV12, I420/IYUV, YUY2, UYVY, {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
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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 did not 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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untested special converters
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  YV12/I420 -> BGR15/BGR24/BGR32 (it is 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 <assert.h>
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#include "swscale.h"
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#include "swscale_internal.h"
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#include "rgb2rgb.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/x86_cpu.h"
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#include "libavutil/avutil.h"
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#include "libavutil/bswap.h"
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#include "libavutil/pixdesc.h"
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#undef MOVNTQ
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#undef PAVGB
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//#undef HAVE_MMX2
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//#define HAVE_AMD3DNOW
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//#undef HAVE_MMX
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//#undef ARCH_X86
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#define DITHER1XBPP
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#define FAST_BGR2YV12 // use 7 bit coefficients instead of 15 bit
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#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
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#define isPacked(x)         (       \
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           (x)==PIX_FMT_PAL8        \
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        || (x)==PIX_FMT_YUYV422     \
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        || (x)==PIX_FMT_UYVY422     \
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        || isAnyRGB(x)              \
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    )
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#define usePal(x) (av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL)
96

    
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#define RGB2YUV_SHIFT 15
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#define BY ( (int)(0.114*219/255*(1<<RGB2YUV_SHIFT)+0.5))
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#define BV (-(int)(0.081*224/255*(1<<RGB2YUV_SHIFT)+0.5))
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#define BU ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5))
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#define GY ( (int)(0.587*219/255*(1<<RGB2YUV_SHIFT)+0.5))
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#define GV (-(int)(0.419*224/255*(1<<RGB2YUV_SHIFT)+0.5))
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#define GU (-(int)(0.331*224/255*(1<<RGB2YUV_SHIFT)+0.5))
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#define RY ( (int)(0.299*219/255*(1<<RGB2YUV_SHIFT)+0.5))
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#define RV ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5))
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#define RU (-(int)(0.169*224/255*(1<<RGB2YUV_SHIFT)+0.5))
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static const double rgb2yuv_table[8][9]={
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    {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5},
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    {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5},
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    {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},
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    {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},
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    {0.59  , 0.11  , 0.30  , -0.331, 0.5, -0.169, -0.421, -0.079, 0.5}, //FCC
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    {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},
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    {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //SMPTE 170M
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    {0.701 , 0.087 , 0.212 , -0.384, 0.5  -0.116, -0.445, -0.055, 0.5}, //SMPTE 240M
117
};
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119
/*
120
NOTES
121
Special versions: fast Y 1:1 scaling (no interpolation in y direction)
122

123
TODO
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more intelligent misalignment 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
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add support for Y8 output
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optimize BGR24 & BGR32
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add BGR4 output support
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write special BGR->BGR scaler
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*/
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#if ARCH_X86 && CONFIG_GPL
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DECLARE_ASM_CONST(8, uint64_t, bF8)=       0xF8F8F8F8F8F8F8F8LL;
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DECLARE_ASM_CONST(8, uint64_t, bFC)=       0xFCFCFCFCFCFCFCFCLL;
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DECLARE_ASM_CONST(8, uint64_t, w10)=       0x0010001000100010LL;
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DECLARE_ASM_CONST(8, uint64_t, w02)=       0x0002000200020002LL;
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DECLARE_ASM_CONST(8, uint64_t, bm00001111)=0x00000000FFFFFFFFLL;
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DECLARE_ASM_CONST(8, uint64_t, bm00000111)=0x0000000000FFFFFFLL;
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DECLARE_ASM_CONST(8, uint64_t, bm11111000)=0xFFFFFFFFFF000000LL;
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DECLARE_ASM_CONST(8, uint64_t, bm01010101)=0x00FF00FF00FF00FFLL;
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const DECLARE_ALIGNED(8, uint64_t, ff_dither4)[2] = {
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        0x0103010301030103LL,
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        0x0200020002000200LL,};
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148
const DECLARE_ALIGNED(8, uint64_t, ff_dither8)[2] = {
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        0x0602060206020602LL,
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        0x0004000400040004LL,};
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DECLARE_ASM_CONST(8, uint64_t, b16Mask)=   0x001F001F001F001FLL;
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DECLARE_ASM_CONST(8, uint64_t, g16Mask)=   0x07E007E007E007E0LL;
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DECLARE_ASM_CONST(8, uint64_t, r16Mask)=   0xF800F800F800F800LL;
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DECLARE_ASM_CONST(8, uint64_t, b15Mask)=   0x001F001F001F001FLL;
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DECLARE_ASM_CONST(8, uint64_t, g15Mask)=   0x03E003E003E003E0LL;
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DECLARE_ASM_CONST(8, uint64_t, r15Mask)=   0x7C007C007C007C00LL;
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DECLARE_ALIGNED(8, const uint64_t, ff_M24A)         = 0x00FF0000FF0000FFLL;
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DECLARE_ALIGNED(8, const uint64_t, ff_M24B)         = 0xFF0000FF0000FF00LL;
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DECLARE_ALIGNED(8, const uint64_t, ff_M24C)         = 0x0000FF0000FF0000LL;
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#ifdef FAST_BGR2YV12
164
DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YCoeff)   = 0x000000210041000DULL;
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DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UCoeff)   = 0x0000FFEEFFDC0038ULL;
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DECLARE_ALIGNED(8, const uint64_t, ff_bgr2VCoeff)   = 0x00000038FFD2FFF8ULL;
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#else
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DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YCoeff)   = 0x000020E540830C8BULL;
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DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UCoeff)   = 0x0000ED0FDAC23831ULL;
170
DECLARE_ALIGNED(8, const uint64_t, ff_bgr2VCoeff)   = 0x00003831D0E6F6EAULL;
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#endif /* FAST_BGR2YV12 */
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DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YOffset)  = 0x1010101010101010ULL;
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DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UVOffset) = 0x8080808080808080ULL;
174
DECLARE_ALIGNED(8, const uint64_t, ff_w1111)        = 0x0001000100010001ULL;
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176
DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toY1Coeff) = 0x0C88000040870C88ULL;
177
DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toY2Coeff) = 0x20DE4087000020DEULL;
178
DECLARE_ASM_CONST(8, uint64_t, ff_rgb24toY1Coeff) = 0x20DE0000408720DEULL;
179
DECLARE_ASM_CONST(8, uint64_t, ff_rgb24toY2Coeff) = 0x0C88408700000C88ULL;
180
DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toYOffset) = 0x0008400000084000ULL;
181

    
182
DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toUV)[2][4] = {
183
    {0x38380000DAC83838ULL, 0xECFFDAC80000ECFFULL, 0xF6E40000D0E3F6E4ULL, 0x3838D0E300003838ULL},
184
    {0xECFF0000DAC8ECFFULL, 0x3838DAC800003838ULL, 0x38380000D0E33838ULL, 0xF6E4D0E30000F6E4ULL},
185
};
186

    
187
DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toUVOffset)= 0x0040400000404000ULL;
188

    
189
#endif /* ARCH_X86 && CONFIG_GPL */
190

    
191
DECLARE_ALIGNED(8, static const uint8_t, dither_2x2_4)[2][8]={
192
{  1,   3,   1,   3,   1,   3,   1,   3, },
193
{  2,   0,   2,   0,   2,   0,   2,   0, },
194
};
195

    
196
DECLARE_ALIGNED(8, static const uint8_t, dither_2x2_8)[2][8]={
197
{  6,   2,   6,   2,   6,   2,   6,   2, },
198
{  0,   4,   0,   4,   0,   4,   0,   4, },
199
};
200

    
201
DECLARE_ALIGNED(8, const uint8_t, dither_8x8_32)[8][8]={
202
{ 17,   9,  23,  15,  16,   8,  22,  14, },
203
{  5,  29,   3,  27,   4,  28,   2,  26, },
204
{ 21,  13,  19,  11,  20,  12,  18,  10, },
205
{  0,  24,   6,  30,   1,  25,   7,  31, },
206
{ 16,   8,  22,  14,  17,   9,  23,  15, },
207
{  4,  28,   2,  26,   5,  29,   3,  27, },
208
{ 20,  12,  18,  10,  21,  13,  19,  11, },
209
{  1,  25,   7,  31,   0,  24,   6,  30, },
210
};
211

    
212
DECLARE_ALIGNED(8, const uint8_t, dither_8x8_73)[8][8]={
213
{  0,  55,  14,  68,   3,  58,  17,  72, },
214
{ 37,  18,  50,  32,  40,  22,  54,  35, },
215
{  9,  64,   5,  59,  13,  67,   8,  63, },
216
{ 46,  27,  41,  23,  49,  31,  44,  26, },
217
{  2,  57,  16,  71,   1,  56,  15,  70, },
218
{ 39,  21,  52,  34,  38,  19,  51,  33, },
219
{ 11,  66,   7,  62,  10,  65,   6,  60, },
220
{ 48,  30,  43,  25,  47,  29,  42,  24, },
221
};
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223
#if 1
224
DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220)[8][8]={
225
{117,  62, 158, 103, 113,  58, 155, 100, },
226
{ 34, 199,  21, 186,  31, 196,  17, 182, },
227
{144,  89, 131,  76, 141,  86, 127,  72, },
228
{  0, 165,  41, 206,  10, 175,  52, 217, },
229
{110,  55, 151,  96, 120,  65, 162, 107, },
230
{ 28, 193,  14, 179,  38, 203,  24, 189, },
231
{138,  83, 124,  69, 148,  93, 134,  79, },
232
{  7, 172,  48, 213,   3, 168,  45, 210, },
233
};
234
#elif 1
235
// tries to correct a gamma of 1.5
236
DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220)[8][8]={
237
{  0, 143,  18, 200,   2, 156,  25, 215, },
238
{ 78,  28, 125,  64,  89,  36, 138,  74, },
239
{ 10, 180,   3, 161,  16, 195,   8, 175, },
240
{109,  51,  93,  38, 121,  60, 105,  47, },
241
{  1, 152,  23, 210,   0, 147,  20, 205, },
242
{ 85,  33, 134,  71,  81,  30, 130,  67, },
243
{ 14, 190,   6, 171,  12, 185,   5, 166, },
244
{117,  57, 101,  44, 113,  54,  97,  41, },
245
};
246
#elif 1
247
// tries to correct a gamma of 2.0
248
DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220)[8][8]={
249
{  0, 124,   8, 193,   0, 140,  12, 213, },
250
{ 55,  14, 104,  42,  66,  19, 119,  52, },
251
{  3, 168,   1, 145,   6, 187,   3, 162, },
252
{ 86,  31,  70,  21,  99,  39,  82,  28, },
253
{  0, 134,  11, 206,   0, 129,   9, 200, },
254
{ 62,  17, 114,  48,  58,  16, 109,  45, },
255
{  5, 181,   2, 157,   4, 175,   1, 151, },
256
{ 95,  36,  78,  26,  90,  34,  74,  24, },
257
};
258
#else
259
// tries to correct a gamma of 2.5
260
DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220)[8][8]={
261
{  0, 107,   3, 187,   0, 125,   6, 212, },
262
{ 39,   7,  86,  28,  49,  11, 102,  36, },
263
{  1, 158,   0, 131,   3, 180,   1, 151, },
264
{ 68,  19,  52,  12,  81,  25,  64,  17, },
265
{  0, 119,   5, 203,   0, 113,   4, 195, },
266
{ 45,   9,  96,  33,  42,   8,  91,  30, },
267
{  2, 172,   1, 144,   2, 165,   0, 137, },
268
{ 77,  23,  60,  15,  72,  21,  56,  14, },
269
};
270
#endif
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272
static av_always_inline void yuv2yuvX16inC_template(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
273
                                                    const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
274
                                                    const int16_t **alpSrc, uint16_t *dest, uint16_t *uDest, uint16_t *vDest, uint16_t *aDest,
275
                                                    int dstW, int chrDstW, int big_endian)
276
{
277
    //FIXME Optimize (just quickly written not optimized..)
278
    int i;
279

    
280
    for (i = 0; i < dstW; i++) {
281
        int val = 1 << 10;
282
        int j;
283

    
284
        for (j = 0; j < lumFilterSize; j++)
285
            val += lumSrc[j][i] * lumFilter[j];
286

    
287
        if (big_endian) {
288
            AV_WB16(&dest[i], av_clip_uint16(val >> 11));
289
        } else {
290
            AV_WL16(&dest[i], av_clip_uint16(val >> 11));
291
        }
292
    }
293

    
294
    if (uDest) {
295
        for (i = 0; i < chrDstW; i++) {
296
            int u = 1 << 10;
297
            int v = 1 << 10;
298
            int j;
299

    
300
            for (j = 0; j < chrFilterSize; j++) {
301
                u += chrSrc[j][i       ] * chrFilter[j];
302
                v += chrSrc[j][i + VOFW] * chrFilter[j];
303
            }
304

    
305
            if (big_endian) {
306
                AV_WB16(&uDest[i], av_clip_uint16(u >> 11));
307
                AV_WB16(&vDest[i], av_clip_uint16(v >> 11));
308
            } else {
309
                AV_WL16(&uDest[i], av_clip_uint16(u >> 11));
310
                AV_WL16(&vDest[i], av_clip_uint16(v >> 11));
311
            }
312
        }
313
    }
314

    
315
    if (CONFIG_SWSCALE_ALPHA && aDest) {
316
        for (i = 0; i < dstW; i++) {
317
            int val = 1 << 10;
318
            int j;
319

    
320
            for (j = 0; j < lumFilterSize; j++)
321
                val += alpSrc[j][i] * lumFilter[j];
322

    
323
            if (big_endian) {
324
                AV_WB16(&aDest[i], av_clip_uint16(val >> 11));
325
            } else {
326
                AV_WL16(&aDest[i], av_clip_uint16(val >> 11));
327
            }
328
        }
329
    }
330
}
331

    
332
static inline void yuv2yuvX16inC(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
333
                                 const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
334
                                 const int16_t **alpSrc, uint16_t *dest, uint16_t *uDest, uint16_t *vDest, uint16_t *aDest, int dstW, int chrDstW,
335
                                 enum PixelFormat dstFormat)
336
{
337
    if (isBE(dstFormat)) {
338
        yuv2yuvX16inC_template(lumFilter, lumSrc, lumFilterSize,
339
                               chrFilter, chrSrc, chrFilterSize,
340
                               alpSrc,
341
                               dest, uDest, vDest, aDest,
342
                               dstW, chrDstW, 1);
343
    } else {
344
        yuv2yuvX16inC_template(lumFilter, lumSrc, lumFilterSize,
345
                               chrFilter, chrSrc, chrFilterSize,
346
                               alpSrc,
347
                               dest, uDest, vDest, aDest,
348
                               dstW, chrDstW, 0);
349
    }
350
}
351

    
352
static inline void yuv2yuvXinC(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
353
                               const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
354
                               const int16_t **alpSrc, uint8_t *dest, uint8_t *uDest, uint8_t *vDest, uint8_t *aDest, int dstW, int chrDstW)
355
{
356
    //FIXME Optimize (just quickly written not optimized..)
357
    int i;
358
    for (i=0; i<dstW; i++) {
359
        int val=1<<18;
360
        int j;
361
        for (j=0; j<lumFilterSize; j++)
362
            val += lumSrc[j][i] * lumFilter[j];
363

    
364
        dest[i]= av_clip_uint8(val>>19);
365
    }
366

    
367
    if (uDest)
368
        for (i=0; i<chrDstW; i++) {
369
            int u=1<<18;
370
            int v=1<<18;
371
            int j;
372
            for (j=0; j<chrFilterSize; j++) {
373
                u += chrSrc[j][i] * chrFilter[j];
374
                v += chrSrc[j][i + VOFW] * chrFilter[j];
375
            }
376

    
377
            uDest[i]= av_clip_uint8(u>>19);
378
            vDest[i]= av_clip_uint8(v>>19);
379
        }
380

    
381
    if (CONFIG_SWSCALE_ALPHA && aDest)
382
        for (i=0; i<dstW; i++) {
383
            int val=1<<18;
384
            int j;
385
            for (j=0; j<lumFilterSize; j++)
386
                val += alpSrc[j][i] * lumFilter[j];
387

    
388
            aDest[i]= av_clip_uint8(val>>19);
389
        }
390

    
391
}
392

    
393
static inline void yuv2nv12XinC(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
394
                                const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
395
                                uint8_t *dest, uint8_t *uDest, int dstW, int chrDstW, int dstFormat)
396
{
397
    //FIXME Optimize (just quickly written not optimized..)
398
    int i;
399
    for (i=0; i<dstW; i++) {
400
        int val=1<<18;
401
        int j;
402
        for (j=0; j<lumFilterSize; j++)
403
            val += lumSrc[j][i] * lumFilter[j];
404

    
405
        dest[i]= av_clip_uint8(val>>19);
406
    }
407

    
408
    if (!uDest)
409
        return;
410

    
411
    if (dstFormat == PIX_FMT_NV12)
412
        for (i=0; i<chrDstW; i++) {
413
            int u=1<<18;
414
            int v=1<<18;
415
            int j;
416
            for (j=0; j<chrFilterSize; j++) {
417
                u += chrSrc[j][i] * chrFilter[j];
418
                v += chrSrc[j][i + VOFW] * chrFilter[j];
419
            }
420

    
421
            uDest[2*i]= av_clip_uint8(u>>19);
422
            uDest[2*i+1]= av_clip_uint8(v>>19);
423
        }
424
    else
425
        for (i=0; i<chrDstW; i++) {
426
            int u=1<<18;
427
            int v=1<<18;
428
            int j;
429
            for (j=0; j<chrFilterSize; j++) {
430
                u += chrSrc[j][i] * chrFilter[j];
431
                v += chrSrc[j][i + VOFW] * chrFilter[j];
432
            }
433

    
434
            uDest[2*i]= av_clip_uint8(v>>19);
435
            uDest[2*i+1]= av_clip_uint8(u>>19);
436
        }
437
}
438

    
439
#define YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha) \
440
    for (i=0; i<(dstW>>1); i++) {\
441
        int j;\
442
        int Y1 = 1<<18;\
443
        int Y2 = 1<<18;\
444
        int U  = 1<<18;\
445
        int V  = 1<<18;\
446
        int av_unused A1, A2;\
447
        type av_unused *r, *b, *g;\
448
        const int i2= 2*i;\
449
        \
450
        for (j=0; j<lumFilterSize; j++) {\
451
            Y1 += lumSrc[j][i2] * lumFilter[j];\
452
            Y2 += lumSrc[j][i2+1] * lumFilter[j];\
453
        }\
454
        for (j=0; j<chrFilterSize; j++) {\
455
            U += chrSrc[j][i] * chrFilter[j];\
456
            V += chrSrc[j][i+VOFW] * chrFilter[j];\
457
        }\
458
        Y1>>=19;\
459
        Y2>>=19;\
460
        U >>=19;\
461
        V >>=19;\
462
        if (alpha) {\
463
            A1 = 1<<18;\
464
            A2 = 1<<18;\
465
            for (j=0; j<lumFilterSize; j++) {\
466
                A1 += alpSrc[j][i2  ] * lumFilter[j];\
467
                A2 += alpSrc[j][i2+1] * lumFilter[j];\
468
            }\
469
            A1>>=19;\
470
            A2>>=19;\
471
        }
472

    
473
#define YSCALE_YUV_2_PACKEDX_C(type,alpha) \
474
        YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha)\
475
        if ((Y1|Y2|U|V)&256) {\
476
            if (Y1>255)   Y1=255; \
477
            else if (Y1<0)Y1=0;   \
478
            if (Y2>255)   Y2=255; \
479
            else if (Y2<0)Y2=0;   \
480
            if (U>255)    U=255;  \
481
            else if (U<0) U=0;    \
482
            if (V>255)    V=255;  \
483
            else if (V<0) V=0;    \
484
        }\
485
        if (alpha && ((A1|A2)&256)) {\
486
            A1=av_clip_uint8(A1);\
487
            A2=av_clip_uint8(A2);\
488
        }
489

    
490
#define YSCALE_YUV_2_PACKEDX_FULL_C(rnd,alpha) \
491
    for (i=0; i<dstW; i++) {\
492
        int j;\
493
        int Y = 0;\
494
        int U = -128<<19;\
495
        int V = -128<<19;\
496
        int av_unused A;\
497
        int R,G,B;\
498
        \
499
        for (j=0; j<lumFilterSize; j++) {\
500
            Y += lumSrc[j][i     ] * lumFilter[j];\
501
        }\
502
        for (j=0; j<chrFilterSize; j++) {\
503
            U += chrSrc[j][i     ] * chrFilter[j];\
504
            V += chrSrc[j][i+VOFW] * chrFilter[j];\
505
        }\
506
        Y >>=10;\
507
        U >>=10;\
508
        V >>=10;\
509
        if (alpha) {\
510
            A = rnd;\
511
            for (j=0; j<lumFilterSize; j++)\
512
                A += alpSrc[j][i     ] * lumFilter[j];\
513
            A >>=19;\
514
            if (A&256)\
515
                A = av_clip_uint8(A);\
516
        }
517

    
518
#define YSCALE_YUV_2_RGBX_FULL_C(rnd,alpha) \
519
    YSCALE_YUV_2_PACKEDX_FULL_C(rnd>>3,alpha)\
520
        Y-= c->yuv2rgb_y_offset;\
521
        Y*= c->yuv2rgb_y_coeff;\
522
        Y+= rnd;\
523
        R= Y + V*c->yuv2rgb_v2r_coeff;\
524
        G= Y + V*c->yuv2rgb_v2g_coeff + U*c->yuv2rgb_u2g_coeff;\
525
        B= Y +                          U*c->yuv2rgb_u2b_coeff;\
526
        if ((R|G|B)&(0xC0000000)) {\
527
            if (R>=(256<<22))   R=(256<<22)-1; \
528
            else if (R<0)R=0;   \
529
            if (G>=(256<<22))   G=(256<<22)-1; \
530
            else if (G<0)G=0;   \
531
            if (B>=(256<<22))   B=(256<<22)-1; \
532
            else if (B<0)B=0;   \
533
        }
534

    
535
#define YSCALE_YUV_2_GRAY16_C \
536
    for (i=0; i<(dstW>>1); i++) {\
537
        int j;\
538
        int Y1 = 1<<18;\
539
        int Y2 = 1<<18;\
540
        int U  = 1<<18;\
541
        int V  = 1<<18;\
542
        \
543
        const int i2= 2*i;\
544
        \
545
        for (j=0; j<lumFilterSize; j++) {\
546
            Y1 += lumSrc[j][i2] * lumFilter[j];\
547
            Y2 += lumSrc[j][i2+1] * lumFilter[j];\
548
        }\
549
        Y1>>=11;\
550
        Y2>>=11;\
551
        if ((Y1|Y2|U|V)&65536) {\
552
            if (Y1>65535)   Y1=65535; \
553
            else if (Y1<0)Y1=0;   \
554
            if (Y2>65535)   Y2=65535; \
555
            else if (Y2<0)Y2=0;   \
556
        }
557

    
558
#define YSCALE_YUV_2_RGBX_C(type,alpha) \
559
    YSCALE_YUV_2_PACKEDX_C(type,alpha)  /* FIXME fix tables so that clipping is not needed and then use _NOCLIP*/\
560
    r = (type *)c->table_rV[V];   \
561
    g = (type *)(c->table_gU[U] + c->table_gV[V]); \
562
    b = (type *)c->table_bU[U];
563

    
564
#define YSCALE_YUV_2_PACKED2_C(type,alpha)   \
565
    for (i=0; i<(dstW>>1); i++) { \
566
        const int i2= 2*i;       \
567
        int Y1= (buf0[i2  ]*yalpha1+buf1[i2  ]*yalpha)>>19;           \
568
        int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>19;           \
569
        int U= (uvbuf0[i     ]*uvalpha1+uvbuf1[i     ]*uvalpha)>>19;  \
570
        int V= (uvbuf0[i+VOFW]*uvalpha1+uvbuf1[i+VOFW]*uvalpha)>>19;  \
571
        type av_unused *r, *b, *g;                                    \
572
        int av_unused A1, A2;                                         \
573
        if (alpha) {\
574
            A1= (abuf0[i2  ]*yalpha1+abuf1[i2  ]*yalpha)>>19;         \
575
            A2= (abuf0[i2+1]*yalpha1+abuf1[i2+1]*yalpha)>>19;         \
576
        }
577

    
578
#define YSCALE_YUV_2_GRAY16_2_C   \
579
    for (i=0; i<(dstW>>1); i++) { \
580
        const int i2= 2*i;       \
581
        int Y1= (buf0[i2  ]*yalpha1+buf1[i2  ]*yalpha)>>11;           \
582
        int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>11;
583

    
584
#define YSCALE_YUV_2_RGB2_C(type,alpha) \
585
    YSCALE_YUV_2_PACKED2_C(type,alpha)\
586
    r = (type *)c->table_rV[V];\
587
    g = (type *)(c->table_gU[U] + c->table_gV[V]);\
588
    b = (type *)c->table_bU[U];
589

    
590
#define YSCALE_YUV_2_PACKED1_C(type,alpha) \
591
    for (i=0; i<(dstW>>1); i++) {\
592
        const int i2= 2*i;\
593
        int Y1= buf0[i2  ]>>7;\
594
        int Y2= buf0[i2+1]>>7;\
595
        int U= (uvbuf1[i     ])>>7;\
596
        int V= (uvbuf1[i+VOFW])>>7;\
597
        type av_unused *r, *b, *g;\
598
        int av_unused A1, A2;\
599
        if (alpha) {\
600
            A1= abuf0[i2  ]>>7;\
601
            A2= abuf0[i2+1]>>7;\
602
        }
603

    
604
#define YSCALE_YUV_2_GRAY16_1_C \
605
    for (i=0; i<(dstW>>1); i++) {\
606
        const int i2= 2*i;\
607
        int Y1= buf0[i2  ]<<1;\
608
        int Y2= buf0[i2+1]<<1;
609

    
610
#define YSCALE_YUV_2_RGB1_C(type,alpha) \
611
    YSCALE_YUV_2_PACKED1_C(type,alpha)\
612
    r = (type *)c->table_rV[V];\
613
    g = (type *)(c->table_gU[U] + c->table_gV[V]);\
614
    b = (type *)c->table_bU[U];
615

    
616
#define YSCALE_YUV_2_PACKED1B_C(type,alpha) \
617
    for (i=0; i<(dstW>>1); i++) {\
618
        const int i2= 2*i;\
619
        int Y1= buf0[i2  ]>>7;\
620
        int Y2= buf0[i2+1]>>7;\
621
        int U= (uvbuf0[i     ] + uvbuf1[i     ])>>8;\
622
        int V= (uvbuf0[i+VOFW] + uvbuf1[i+VOFW])>>8;\
623
        type av_unused *r, *b, *g;\
624
        int av_unused A1, A2;\
625
        if (alpha) {\
626
            A1= abuf0[i2  ]>>7;\
627
            A2= abuf0[i2+1]>>7;\
628
        }
629

    
630
#define YSCALE_YUV_2_RGB1B_C(type,alpha) \
631
    YSCALE_YUV_2_PACKED1B_C(type,alpha)\
632
    r = (type *)c->table_rV[V];\
633
    g = (type *)(c->table_gU[U] + c->table_gV[V]);\
634
    b = (type *)c->table_bU[U];
635

    
636
#define YSCALE_YUV_2_MONO2_C \
637
    const uint8_t * const d128=dither_8x8_220[y&7];\
638
    uint8_t *g= c->table_gU[128] + c->table_gV[128];\
639
    for (i=0; i<dstW-7; i+=8) {\
640
        int acc;\
641
        acc =       g[((buf0[i  ]*yalpha1+buf1[i  ]*yalpha)>>19) + d128[0]];\
642
        acc+= acc + g[((buf0[i+1]*yalpha1+buf1[i+1]*yalpha)>>19) + d128[1]];\
643
        acc+= acc + g[((buf0[i+2]*yalpha1+buf1[i+2]*yalpha)>>19) + d128[2]];\
644
        acc+= acc + g[((buf0[i+3]*yalpha1+buf1[i+3]*yalpha)>>19) + d128[3]];\
645
        acc+= acc + g[((buf0[i+4]*yalpha1+buf1[i+4]*yalpha)>>19) + d128[4]];\
646
        acc+= acc + g[((buf0[i+5]*yalpha1+buf1[i+5]*yalpha)>>19) + d128[5]];\
647
        acc+= acc + g[((buf0[i+6]*yalpha1+buf1[i+6]*yalpha)>>19) + d128[6]];\
648
        acc+= acc + g[((buf0[i+7]*yalpha1+buf1[i+7]*yalpha)>>19) + d128[7]];\
649
        ((uint8_t*)dest)[0]= c->dstFormat == PIX_FMT_MONOBLACK ? acc : ~acc;\
650
        dest++;\
651
    }
652

    
653
#define YSCALE_YUV_2_MONOX_C \
654
    const uint8_t * const d128=dither_8x8_220[y&7];\
655
    uint8_t *g= c->table_gU[128] + c->table_gV[128];\
656
    int acc=0;\
657
    for (i=0; i<dstW-1; i+=2) {\
658
        int j;\
659
        int Y1=1<<18;\
660
        int Y2=1<<18;\
661
\
662
        for (j=0; j<lumFilterSize; j++) {\
663
            Y1 += lumSrc[j][i] * lumFilter[j];\
664
            Y2 += lumSrc[j][i+1] * lumFilter[j];\
665
        }\
666
        Y1>>=19;\
667
        Y2>>=19;\
668
        if ((Y1|Y2)&256) {\
669
            if (Y1>255)   Y1=255;\
670
            else if (Y1<0)Y1=0;\
671
            if (Y2>255)   Y2=255;\
672
            else if (Y2<0)Y2=0;\
673
        }\
674
        acc+= acc + g[Y1+d128[(i+0)&7]];\
675
        acc+= acc + g[Y2+d128[(i+1)&7]];\
676
        if ((i&7)==6) {\
677
            ((uint8_t*)dest)[0]= c->dstFormat == PIX_FMT_MONOBLACK ? acc : ~acc;\
678
            dest++;\
679
        }\
680
    }
681

    
682
#define YSCALE_YUV_2_ANYRGB_C(func, func2, func_g16, func_monoblack)\
683
    switch(c->dstFormat) {\
684
    case PIX_FMT_RGB48BE:\
685
    case PIX_FMT_RGB48LE:\
686
        func(uint8_t,0)\
687
            ((uint8_t*)dest)[ 0]= r[Y1];\
688
            ((uint8_t*)dest)[ 1]= r[Y1];\
689
            ((uint8_t*)dest)[ 2]= g[Y1];\
690
            ((uint8_t*)dest)[ 3]= g[Y1];\
691
            ((uint8_t*)dest)[ 4]= b[Y1];\
692
            ((uint8_t*)dest)[ 5]= b[Y1];\
693
            ((uint8_t*)dest)[ 6]= r[Y2];\
694
            ((uint8_t*)dest)[ 7]= r[Y2];\
695
            ((uint8_t*)dest)[ 8]= g[Y2];\
696
            ((uint8_t*)dest)[ 9]= g[Y2];\
697
            ((uint8_t*)dest)[10]= b[Y2];\
698
            ((uint8_t*)dest)[11]= b[Y2];\
699
            dest+=12;\
700
        }\
701
        break;\
702
    case PIX_FMT_RGBA:\
703
    case PIX_FMT_BGRA:\
704
        if (CONFIG_SMALL) {\
705
            int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;\
706
            func(uint32_t,needAlpha)\
707
                ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1] + (needAlpha ? (A1<<24) : 0);\
708
                ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2] + (needAlpha ? (A2<<24) : 0);\
709
            }\
710
        } else {\
711
            if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {\
712
                func(uint32_t,1)\
713
                    ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1] + (A1<<24);\
714
                    ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2] + (A2<<24);\
715
                }\
716
            } else {\
717
                func(uint32_t,0)\
718
                    ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];\
719
                    ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];\
720
                }\
721
            }\
722
        }\
723
        break;\
724
    case PIX_FMT_ARGB:\
725
    case PIX_FMT_ABGR:\
726
        if (CONFIG_SMALL) {\
727
            int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;\
728
            func(uint32_t,needAlpha)\
729
                ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1] + (needAlpha ? A1 : 0);\
730
                ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2] + (needAlpha ? A2 : 0);\
731
            }\
732
        } else {\
733
            if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {\
734
                func(uint32_t,1)\
735
                    ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1] + A1;\
736
                    ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2] + A2;\
737
                }\
738
            } else {\
739
                func(uint32_t,0)\
740
                    ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];\
741
                    ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];\
742
                }\
743
            }\
744
        }                \
745
        break;\
746
    case PIX_FMT_RGB24:\
747
        func(uint8_t,0)\
748
            ((uint8_t*)dest)[0]= r[Y1];\
749
            ((uint8_t*)dest)[1]= g[Y1];\
750
            ((uint8_t*)dest)[2]= b[Y1];\
751
            ((uint8_t*)dest)[3]= r[Y2];\
752
            ((uint8_t*)dest)[4]= g[Y2];\
753
            ((uint8_t*)dest)[5]= b[Y2];\
754
            dest+=6;\
755
        }\
756
        break;\
757
    case PIX_FMT_BGR24:\
758
        func(uint8_t,0)\
759
            ((uint8_t*)dest)[0]= b[Y1];\
760
            ((uint8_t*)dest)[1]= g[Y1];\
761
            ((uint8_t*)dest)[2]= r[Y1];\
762
            ((uint8_t*)dest)[3]= b[Y2];\
763
            ((uint8_t*)dest)[4]= g[Y2];\
764
            ((uint8_t*)dest)[5]= r[Y2];\
765
            dest+=6;\
766
        }\
767
        break;\
768
    case PIX_FMT_RGB565:\
769
    case PIX_FMT_BGR565:\
770
        {\
771
            const int dr1= dither_2x2_8[y&1    ][0];\
772
            const int dg1= dither_2x2_4[y&1    ][0];\
773
            const int db1= dither_2x2_8[(y&1)^1][0];\
774
            const int dr2= dither_2x2_8[y&1    ][1];\
775
            const int dg2= dither_2x2_4[y&1    ][1];\
776
            const int db2= dither_2x2_8[(y&1)^1][1];\
777
            func(uint16_t,0)\
778
                ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
779
                ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
780
            }\
781
        }\
782
        break;\
783
    case PIX_FMT_RGB555:\
784
    case PIX_FMT_BGR555:\
785
        {\
786
            const int dr1= dither_2x2_8[y&1    ][0];\
787
            const int dg1= dither_2x2_8[y&1    ][1];\
788
            const int db1= dither_2x2_8[(y&1)^1][0];\
789
            const int dr2= dither_2x2_8[y&1    ][1];\
790
            const int dg2= dither_2x2_8[y&1    ][0];\
791
            const int db2= dither_2x2_8[(y&1)^1][1];\
792
            func(uint16_t,0)\
793
                ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
794
                ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
795
            }\
796
        }\
797
        break;\
798
    case PIX_FMT_RGB8:\
799
    case PIX_FMT_BGR8:\
800
        {\
801
            const uint8_t * const d64= dither_8x8_73[y&7];\
802
            const uint8_t * const d32= dither_8x8_32[y&7];\
803
            func(uint8_t,0)\
804
                ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];\
805
                ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];\
806
            }\
807
        }\
808
        break;\
809
    case PIX_FMT_RGB4:\
810
    case PIX_FMT_BGR4:\
811
        {\
812
            const uint8_t * const d64= dither_8x8_73 [y&7];\
813
            const uint8_t * const d128=dither_8x8_220[y&7];\
814
            func(uint8_t,0)\
815
                ((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]\
816
                                 + ((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);\
817
            }\
818
        }\
819
        break;\
820
    case PIX_FMT_RGB4_BYTE:\
821
    case PIX_FMT_BGR4_BYTE:\
822
        {\
823
            const uint8_t * const d64= dither_8x8_73 [y&7];\
824
            const uint8_t * const d128=dither_8x8_220[y&7];\
825
            func(uint8_t,0)\
826
                ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];\
827
                ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];\
828
            }\
829
        }\
830
        break;\
831
    case PIX_FMT_MONOBLACK:\
832
    case PIX_FMT_MONOWHITE:\
833
        {\
834
            func_monoblack\
835
        }\
836
        break;\
837
    case PIX_FMT_YUYV422:\
838
        func2\
839
            ((uint8_t*)dest)[2*i2+0]= Y1;\
840
            ((uint8_t*)dest)[2*i2+1]= U;\
841
            ((uint8_t*)dest)[2*i2+2]= Y2;\
842
            ((uint8_t*)dest)[2*i2+3]= V;\
843
        }                \
844
        break;\
845
    case PIX_FMT_UYVY422:\
846
        func2\
847
            ((uint8_t*)dest)[2*i2+0]= U;\
848
            ((uint8_t*)dest)[2*i2+1]= Y1;\
849
            ((uint8_t*)dest)[2*i2+2]= V;\
850
            ((uint8_t*)dest)[2*i2+3]= Y2;\
851
        }                \
852
        break;\
853
    case PIX_FMT_GRAY16BE:\
854
        func_g16\
855
            ((uint8_t*)dest)[2*i2+0]= Y1>>8;\
856
            ((uint8_t*)dest)[2*i2+1]= Y1;\
857
            ((uint8_t*)dest)[2*i2+2]= Y2>>8;\
858
            ((uint8_t*)dest)[2*i2+3]= Y2;\
859
        }                \
860
        break;\
861
    case PIX_FMT_GRAY16LE:\
862
        func_g16\
863
            ((uint8_t*)dest)[2*i2+0]= Y1;\
864
            ((uint8_t*)dest)[2*i2+1]= Y1>>8;\
865
            ((uint8_t*)dest)[2*i2+2]= Y2;\
866
            ((uint8_t*)dest)[2*i2+3]= Y2>>8;\
867
        }                \
868
        break;\
869
    }
870

    
871
static inline void yuv2packedXinC(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
872
                                  const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
873
                                  const int16_t **alpSrc, uint8_t *dest, int dstW, int y)
874
{
875
    int i;
876
    YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGBX_C, YSCALE_YUV_2_PACKEDX_C(void,0), YSCALE_YUV_2_GRAY16_C, YSCALE_YUV_2_MONOX_C)
877
}
878

    
879
static inline void yuv2rgbXinC_full(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
880
                                    const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
881
                                    const int16_t **alpSrc, uint8_t *dest, int dstW, int y)
882
{
883
    int i;
884
    int step= c->dstFormatBpp/8;
885
    int aidx= 3;
886

    
887
    switch(c->dstFormat) {
888
    case PIX_FMT_ARGB:
889
        dest++;
890
        aidx= 0;
891
    case PIX_FMT_RGB24:
892
        aidx--;
893
    case PIX_FMT_RGBA:
894
        if (CONFIG_SMALL) {
895
            int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;
896
            YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)
897
                dest[aidx]= needAlpha ? A : 255;
898
                dest[0]= R>>22;
899
                dest[1]= G>>22;
900
                dest[2]= B>>22;
901
                dest+= step;
902
            }
903
        } else {
904
            if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {
905
                YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)
906
                    dest[aidx]= A;
907
                    dest[0]= R>>22;
908
                    dest[1]= G>>22;
909
                    dest[2]= B>>22;
910
                    dest+= step;
911
                }
912
            } else {
913
                YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)
914
                    dest[aidx]= 255;
915
                    dest[0]= R>>22;
916
                    dest[1]= G>>22;
917
                    dest[2]= B>>22;
918
                    dest+= step;
919
                }
920
            }
921
        }
922
        break;
923
    case PIX_FMT_ABGR:
924
        dest++;
925
        aidx= 0;
926
    case PIX_FMT_BGR24:
927
        aidx--;
928
    case PIX_FMT_BGRA:
929
        if (CONFIG_SMALL) {
930
            int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;
931
            YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)
932
                dest[aidx]= needAlpha ? A : 255;
933
                dest[0]= B>>22;
934
                dest[1]= G>>22;
935
                dest[2]= R>>22;
936
                dest+= step;
937
            }
938
        } else {
939
            if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {
940
                YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)
941
                    dest[aidx]= A;
942
                    dest[0]= B>>22;
943
                    dest[1]= G>>22;
944
                    dest[2]= R>>22;
945
                    dest+= step;
946
                }
947
            } else {
948
                YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)
949
                    dest[aidx]= 255;
950
                    dest[0]= B>>22;
951
                    dest[1]= G>>22;
952
                    dest[2]= R>>22;
953
                    dest+= step;
954
                }
955
            }
956
        }
957
        break;
958
    default:
959
        assert(0);
960
    }
961
}
962

    
963
static void fillPlane(uint8_t* plane, int stride, int width, int height, int y, uint8_t val)
964
{
965
    int i;
966
    uint8_t *ptr = plane + stride*y;
967
    for (i=0; i<height; i++) {
968
        memset(ptr, val, width);
969
        ptr += stride;
970
    }
971
}
972

    
973
static inline void rgb48ToY(uint8_t *dst, const uint8_t *src, int width,
974
                            uint32_t *unused)
975
{
976
    int i;
977
    for (i = 0; i < width; i++) {
978
        int r = src[i*6+0];
979
        int g = src[i*6+2];
980
        int b = src[i*6+4];
981

    
982
        dst[i] = (RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;
983
    }
984
}
985

    
986
static inline void rgb48ToUV(uint8_t *dstU, uint8_t *dstV,
987
                             const uint8_t *src1, const uint8_t *src2,
988
                             int width, uint32_t *unused)
989
{
990
    int i;
991
    assert(src1==src2);
992
    for (i = 0; i < width; i++) {
993
        int r = src1[6*i + 0];
994
        int g = src1[6*i + 2];
995
        int b = src1[6*i + 4];
996

    
997
        dstU[i] = (RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;
998
        dstV[i] = (RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;
999
    }
1000
}
1001

    
1002
static inline void rgb48ToUV_half(uint8_t *dstU, uint8_t *dstV,
1003
                                  const uint8_t *src1, const uint8_t *src2,
1004
                                  int width, uint32_t *unused)
1005
{
1006
    int i;
1007
    assert(src1==src2);
1008
    for (i = 0; i < width; i++) {
1009
        int r= src1[12*i + 0] + src1[12*i + 6];
1010
        int g= src1[12*i + 2] + src1[12*i + 8];
1011
        int b= src1[12*i + 4] + src1[12*i + 10];
1012

    
1013
        dstU[i]= (RU*r + GU*g + BU*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);
1014
        dstV[i]= (RV*r + GV*g + BV*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);
1015
    }
1016
}
1017

    
1018
#define BGR2Y(type, name, shr, shg, shb, maskr, maskg, maskb, RY, GY, BY, S)\
1019
static inline void name(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)\
1020
{\
1021
    int i;\
1022
    for (i=0; i<width; i++) {\
1023
        int b= (((const type*)src)[i]>>shb)&maskb;\
1024
        int g= (((const type*)src)[i]>>shg)&maskg;\
1025
        int r= (((const type*)src)[i]>>shr)&maskr;\
1026
\
1027
        dst[i]= (((RY)*r + (GY)*g + (BY)*b + (33<<((S)-1)))>>(S));\
1028
    }\
1029
}
1030

    
1031
BGR2Y(uint32_t, bgr32ToY,16, 0, 0, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)
1032
BGR2Y(uint32_t, rgb32ToY, 0, 0,16, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)
1033
BGR2Y(uint16_t, bgr16ToY, 0, 0, 0, 0x001F, 0x07E0, 0xF800, RY<<11, GY<<5, BY    , RGB2YUV_SHIFT+8)
1034
BGR2Y(uint16_t, bgr15ToY, 0, 0, 0, 0x001F, 0x03E0, 0x7C00, RY<<10, GY<<5, BY    , RGB2YUV_SHIFT+7)
1035
BGR2Y(uint16_t, rgb16ToY, 0, 0, 0, 0xF800, 0x07E0, 0x001F, RY    , GY<<5, BY<<11, RGB2YUV_SHIFT+8)
1036
BGR2Y(uint16_t, rgb15ToY, 0, 0, 0, 0x7C00, 0x03E0, 0x001F, RY    , GY<<5, BY<<10, RGB2YUV_SHIFT+7)
1037

    
1038
static inline void abgrToA(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)
1039
{
1040
    int i;
1041
    for (i=0; i<width; i++) {
1042
        dst[i]= src[4*i];
1043
    }
1044
}
1045

    
1046
#define BGR2UV(type, name, shr, shg, shb, maska, maskr, maskg, maskb, RU, GU, BU, RV, GV, BV, S)\
1047
static inline void name(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\
1048
{\
1049
    int i;\
1050
    for (i=0; i<width; i++) {\
1051
        int b= (((const type*)src)[i]&maskb)>>shb;\
1052
        int g= (((const type*)src)[i]&maskg)>>shg;\
1053
        int r= (((const type*)src)[i]&maskr)>>shr;\
1054
\
1055
        dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<((S)-1)))>>(S);\
1056
        dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<((S)-1)))>>(S);\
1057
    }\
1058
}\
1059
static inline void name ## _half(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\
1060
{\
1061
    int i;\
1062
    for (i=0; i<width; i++) {\
1063
        int pix0= ((const type*)src)[2*i+0];\
1064
        int pix1= ((const type*)src)[2*i+1];\
1065
        int g= (pix0&~(maskr|maskb))+(pix1&~(maskr|maskb));\
1066
        int b= ((pix0+pix1-g)&(maskb|(2*maskb)))>>shb;\
1067
        int r= ((pix0+pix1-g)&(maskr|(2*maskr)))>>shr;\
1068
        g&= maskg|(2*maskg);\
1069
\
1070
        g>>=shg;\
1071
\
1072
        dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<(S)))>>((S)+1);\
1073
        dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<(S)))>>((S)+1);\
1074
    }\
1075
}
1076

    
1077
BGR2UV(uint32_t, bgr32ToUV,16, 0, 0, 0xFF000000, 0xFF0000, 0xFF00,   0x00FF, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)
1078
BGR2UV(uint32_t, rgb32ToUV, 0, 0,16, 0xFF000000,   0x00FF, 0xFF00, 0xFF0000, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)
1079
BGR2UV(uint16_t, bgr16ToUV, 0, 0, 0,          0,   0x001F, 0x07E0,   0xF800, RU<<11, GU<<5, BU    , RV<<11, GV<<5, BV    , RGB2YUV_SHIFT+8)
1080
BGR2UV(uint16_t, bgr15ToUV, 0, 0, 0,          0,   0x001F, 0x03E0,   0x7C00, RU<<10, GU<<5, BU    , RV<<10, GV<<5, BV    , RGB2YUV_SHIFT+7)
1081
BGR2UV(uint16_t, rgb16ToUV, 0, 0, 0,          0,   0xF800, 0x07E0,   0x001F, RU    , GU<<5, BU<<11, RV    , GV<<5, BV<<11, RGB2YUV_SHIFT+8)
1082
BGR2UV(uint16_t, rgb15ToUV, 0, 0, 0,          0,   0x7C00, 0x03E0,   0x001F, RU    , GU<<5, BU<<10, RV    , GV<<5, BV<<10, RGB2YUV_SHIFT+7)
1083

    
1084
static inline void palToY(uint8_t *dst, const uint8_t *src, long width, uint32_t *pal)
1085
{
1086
    int i;
1087
    for (i=0; i<width; i++) {
1088
        int d= src[i];
1089

    
1090
        dst[i]= pal[d] & 0xFF;
1091
    }
1092
}
1093

    
1094
static inline void palToUV(uint8_t *dstU, uint8_t *dstV,
1095
                           const uint8_t *src1, const uint8_t *src2,
1096
                           long width, uint32_t *pal)
1097
{
1098
    int i;
1099
    assert(src1 == src2);
1100
    for (i=0; i<width; i++) {
1101
        int p= pal[src1[i]];
1102

    
1103
        dstU[i]= p>>8;
1104
        dstV[i]= p>>16;
1105
    }
1106
}
1107

    
1108
static inline void monowhite2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)
1109
{
1110
    int i, j;
1111
    for (i=0; i<width/8; i++) {
1112
        int d= ~src[i];
1113
        for(j=0; j<8; j++)
1114
            dst[8*i+j]= ((d>>(7-j))&1)*255;
1115
    }
1116
}
1117

    
1118
static inline void monoblack2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)
1119
{
1120
    int i, j;
1121
    for (i=0; i<width/8; i++) {
1122
        int d= src[i];
1123
        for(j=0; j<8; j++)
1124
            dst[8*i+j]= ((d>>(7-j))&1)*255;
1125
    }
1126
}
1127

    
1128
//Note: we have C, MMX, MMX2, 3DNOW versions, there is no 3DNOW+MMX2 one
1129
//Plain C versions
1130
#if ((!HAVE_MMX || !CONFIG_GPL) && !HAVE_ALTIVEC) || CONFIG_RUNTIME_CPUDETECT
1131
#define COMPILE_C
1132
#endif
1133

    
1134
#if ARCH_PPC
1135
#if HAVE_ALTIVEC || CONFIG_RUNTIME_CPUDETECT
1136
#define COMPILE_ALTIVEC
1137
#endif
1138
#endif //ARCH_PPC
1139

    
1140
#if ARCH_X86
1141

    
1142
#if ((HAVE_MMX && !HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL
1143
#define COMPILE_MMX
1144
#endif
1145

    
1146
#if (HAVE_MMX2 || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL
1147
#define COMPILE_MMX2
1148
#endif
1149

    
1150
#if ((HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL
1151
#define COMPILE_3DNOW
1152
#endif
1153
#endif //ARCH_X86
1154

    
1155
#define COMPILE_TEMPLATE_MMX 0
1156
#define COMPILE_TEMPLATE_MMX2 0
1157
#define COMPILE_TEMPLATE_AMD3DNOW 0
1158
#define COMPILE_TEMPLATE_ALTIVEC 0
1159

    
1160
#ifdef COMPILE_C
1161
#define RENAME(a) a ## _C
1162
#include "swscale_template.c"
1163
#endif
1164

    
1165
#ifdef COMPILE_ALTIVEC
1166
#undef RENAME
1167
#undef COMPILE_TEMPLATE_ALTIVEC
1168
#define COMPILE_TEMPLATE_ALTIVEC 1
1169
#define RENAME(a) a ## _altivec
1170
#include "swscale_template.c"
1171
#endif
1172

    
1173
#if ARCH_X86
1174

    
1175
//MMX versions
1176
#ifdef COMPILE_MMX
1177
#undef RENAME
1178
#undef COMPILE_TEMPLATE_MMX
1179
#undef COMPILE_TEMPLATE_MMX2
1180
#undef COMPILE_TEMPLATE_AMD3DNOW
1181
#define COMPILE_TEMPLATE_MMX 1
1182
#define COMPILE_TEMPLATE_MMX2 0
1183
#define COMPILE_TEMPLATE_AMD3DNOW 0
1184
#define RENAME(a) a ## _MMX
1185
#include "swscale_template.c"
1186
#endif
1187

    
1188
//MMX2 versions
1189
#ifdef COMPILE_MMX2
1190
#undef RENAME
1191
#undef COMPILE_TEMPLATE_MMX
1192
#undef COMPILE_TEMPLATE_MMX2
1193
#undef COMPILE_TEMPLATE_AMD3DNOW
1194
#define COMPILE_TEMPLATE_MMX 1
1195
#define COMPILE_TEMPLATE_MMX2 1
1196
#define COMPILE_TEMPLATE_AMD3DNOW 0
1197
#define RENAME(a) a ## _MMX2
1198
#include "swscale_template.c"
1199
#endif
1200

    
1201
//3DNOW versions
1202
#ifdef COMPILE_3DNOW
1203
#undef RENAME
1204
#undef COMPILE_TEMPLATE_MMX
1205
#undef COMPILE_TEMPLATE_MMX2
1206
#undef COMPILE_TEMPLATE_AMD3DNOW
1207
#define COMPILE_TEMPLATE_MMX 1
1208
#define COMPILE_TEMPLATE_MMX2 0
1209
#define COMPILE_TEMPLATE_AMD3DNOW 1
1210
#define RENAME(a) a ## _3DNow
1211
#include "swscale_template.c"
1212
#endif
1213

    
1214
#endif //ARCH_X86
1215

    
1216
SwsFunc ff_getSwsFunc(SwsContext *c)
1217
{
1218
#if CONFIG_RUNTIME_CPUDETECT
1219
    int flags = c->flags;
1220

    
1221
#if ARCH_X86 && CONFIG_GPL
1222
    // ordered per speed fastest first
1223
    if (flags & SWS_CPU_CAPS_MMX2) {
1224
        sws_init_swScale_MMX2(c);
1225
        return swScale_MMX2;
1226
    } else if (flags & SWS_CPU_CAPS_3DNOW) {
1227
        sws_init_swScale_3DNow(c);
1228
        return swScale_3DNow;
1229
    } else if (flags & SWS_CPU_CAPS_MMX) {
1230
        sws_init_swScale_MMX(c);
1231
        return swScale_MMX;
1232
    } else {
1233
        sws_init_swScale_C(c);
1234
        return swScale_C;
1235
    }
1236

    
1237
#else
1238
#if ARCH_PPC
1239
    if (flags & SWS_CPU_CAPS_ALTIVEC) {
1240
        sws_init_swScale_altivec(c);
1241
        return swScale_altivec;
1242
    } else {
1243
        sws_init_swScale_C(c);
1244
        return swScale_C;
1245
    }
1246
#endif
1247
    sws_init_swScale_C(c);
1248
    return swScale_C;
1249
#endif /* ARCH_X86 && CONFIG_GPL */
1250
#else //CONFIG_RUNTIME_CPUDETECT
1251
#if   COMPILE_TEMPLATE_MMX2
1252
    sws_init_swScale_MMX2(c);
1253
    return swScale_MMX2;
1254
#elif COMPILE_TEMPLATE_AMD3DNOW
1255
    sws_init_swScale_3DNow(c);
1256
    return swScale_3DNow;
1257
#elif COMPILE_TEMPLATE_MMX
1258
    sws_init_swScale_MMX(c);
1259
    return swScale_MMX;
1260
#elif COMPILE_TEMPLATE_ALTIVEC
1261
    sws_init_swScale_altivec(c);
1262
    return swScale_altivec;
1263
#else
1264
    sws_init_swScale_C(c);
1265
    return swScale_C;
1266
#endif
1267
#endif //!CONFIG_RUNTIME_CPUDETECT
1268
}
1269

    
1270
static int planarToNv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1271
                               int srcSliceH, uint8_t* dstParam[], int dstStride[])
1272
{
1273
    uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1274
    /* Copy Y plane */
1275
    if (dstStride[0]==srcStride[0] && srcStride[0] > 0)
1276
        memcpy(dst, src[0], srcSliceH*dstStride[0]);
1277
    else {
1278
        int i;
1279
        const uint8_t *srcPtr= src[0];
1280
        uint8_t *dstPtr= dst;
1281
        for (i=0; i<srcSliceH; i++) {
1282
            memcpy(dstPtr, srcPtr, c->srcW);
1283
            srcPtr+= srcStride[0];
1284
            dstPtr+= dstStride[0];
1285
        }
1286
    }
1287
    dst = dstParam[1] + dstStride[1]*srcSliceY/2;
1288
    if (c->dstFormat == PIX_FMT_NV12)
1289
        interleaveBytes(src[1], src[2], dst, c->srcW/2, srcSliceH/2, srcStride[1], srcStride[2], dstStride[0]);
1290
    else
1291
        interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]);
1292

    
1293
    return srcSliceH;
1294
}
1295

    
1296
static int planarToYuy2Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1297
                               int srcSliceH, uint8_t* dstParam[], int dstStride[])
1298
{
1299
    uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1300

    
1301
    yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);
1302

    
1303
    return srcSliceH;
1304
}
1305

    
1306
static int planarToUyvyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1307
                               int srcSliceH, uint8_t* dstParam[], int dstStride[])
1308
{
1309
    uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1310

    
1311
    yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);
1312

    
1313
    return srcSliceH;
1314
}
1315

    
1316
static int yuv422pToYuy2Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1317
                                int srcSliceH, uint8_t* dstParam[], int dstStride[])
1318
{
1319
    uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1320

    
1321
    yuv422ptoyuy2(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);
1322

    
1323
    return srcSliceH;
1324
}
1325

    
1326
static int yuv422pToUyvyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1327
                                int srcSliceH, uint8_t* dstParam[], int dstStride[])
1328
{
1329
    uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1330

    
1331
    yuv422ptouyvy(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);
1332

    
1333
    return srcSliceH;
1334
}
1335

    
1336
static int yuyvToYuv420Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1337
                               int srcSliceH, uint8_t* dstParam[], int dstStride[])
1338
{
1339
    uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;
1340
    uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;
1341
    uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;
1342

    
1343
    yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);
1344

    
1345
    if (dstParam[3])
1346
        fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
1347

    
1348
    return srcSliceH;
1349
}
1350

    
1351
static int yuyvToYuv422Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1352
                               int srcSliceH, uint8_t* dstParam[], int dstStride[])
1353
{
1354
    uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;
1355
    uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;
1356
    uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;
1357

    
1358
    yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);
1359

    
1360
    return srcSliceH;
1361
}
1362

    
1363
static int uyvyToYuv420Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1364
                               int srcSliceH, uint8_t* dstParam[], int dstStride[])
1365
{
1366
    uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;
1367
    uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;
1368
    uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;
1369

    
1370
    uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);
1371

    
1372
    if (dstParam[3])
1373
        fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
1374

    
1375
    return srcSliceH;
1376
}
1377

    
1378
static int uyvyToYuv422Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1379
                               int srcSliceH, uint8_t* dstParam[], int dstStride[])
1380
{
1381
    uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;
1382
    uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;
1383
    uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;
1384

    
1385
    uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);
1386

    
1387
    return srcSliceH;
1388
}
1389

    
1390
static int palToRgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1391
                           int srcSliceH, uint8_t* dst[], int dstStride[])
1392
{
1393
    const enum PixelFormat srcFormat= c->srcFormat;
1394
    const enum PixelFormat dstFormat= c->dstFormat;
1395
    void (*conv)(const uint8_t *src, uint8_t *dst, long num_pixels,
1396
                 const uint8_t *palette)=NULL;
1397
    int i;
1398
    uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1399
    const uint8_t *srcPtr= src[0];
1400

    
1401
    if (usePal(srcFormat)) {
1402
        switch (dstFormat) {
1403
        case PIX_FMT_RGB32  : conv = palette8topacked32; break;
1404
        case PIX_FMT_BGR32  : conv = palette8topacked32; break;
1405
        case PIX_FMT_BGR32_1: conv = palette8topacked32; break;
1406
        case PIX_FMT_RGB32_1: conv = palette8topacked32; break;
1407
        case PIX_FMT_RGB24  : conv = palette8topacked24; break;
1408
        case PIX_FMT_BGR24  : conv = palette8topacked24; break;
1409
        }
1410
    }
1411

    
1412
    if (!conv)
1413
        av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
1414
               sws_format_name(srcFormat), sws_format_name(dstFormat));
1415
    else {
1416
        for (i=0; i<srcSliceH; i++) {
1417
            conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);
1418
            srcPtr+= srcStride[0];
1419
            dstPtr+= dstStride[0];
1420
        }
1421
    }
1422

    
1423
    return srcSliceH;
1424
}
1425

    
1426
#define isRGBA32(x) (            \
1427
           (x) == PIX_FMT_ARGB   \
1428
        || (x) == PIX_FMT_RGBA   \
1429
        || (x) == PIX_FMT_BGRA   \
1430
        || (x) == PIX_FMT_ABGR   \
1431
        )
1432

    
1433
/* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */
1434
static int rgbToRgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1435
                           int srcSliceH, uint8_t* dst[], int dstStride[])
1436
{
1437
    const enum PixelFormat srcFormat= c->srcFormat;
1438
    const enum PixelFormat dstFormat= c->dstFormat;
1439
    const int srcBpp= (c->srcFormatBpp + 7) >> 3;
1440
    const int dstBpp= (c->dstFormatBpp + 7) >> 3;
1441
    const int srcId= c->srcFormatBpp >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */
1442
    const int dstId= c->dstFormatBpp >> 2;
1443
    void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;
1444

    
1445
#define CONV_IS(src, dst) (srcFormat == PIX_FMT_##src && dstFormat == PIX_FMT_##dst)
1446

    
1447
    if (isRGBA32(srcFormat) && isRGBA32(dstFormat)) {
1448
        if (     CONV_IS(ABGR, RGBA)
1449
              || CONV_IS(ARGB, BGRA)
1450
              || CONV_IS(BGRA, ARGB)
1451
              || CONV_IS(RGBA, ABGR)) conv = shuffle_bytes_3210;
1452
        else if (CONV_IS(ABGR, ARGB)
1453
              || CONV_IS(ARGB, ABGR)) conv = shuffle_bytes_0321;
1454
        else if (CONV_IS(ABGR, BGRA)
1455
              || CONV_IS(ARGB, RGBA)) conv = shuffle_bytes_1230;
1456
        else if (CONV_IS(BGRA, RGBA)
1457
              || CONV_IS(RGBA, BGRA)) conv = shuffle_bytes_2103;
1458
        else if (CONV_IS(BGRA, ABGR)
1459
              || CONV_IS(RGBA, ARGB)) conv = shuffle_bytes_3012;
1460
    } else
1461
    /* BGR -> BGR */
1462
    if (  (isBGRinInt(srcFormat) && isBGRinInt(dstFormat))
1463
       || (isRGBinInt(srcFormat) && isRGBinInt(dstFormat))) {
1464
        switch(srcId | (dstId<<4)) {
1465
        case 0x34: conv= rgb16to15; break;
1466
        case 0x36: conv= rgb24to15; break;
1467
        case 0x38: conv= rgb32to15; break;
1468
        case 0x43: conv= rgb15to16; break;
1469
        case 0x46: conv= rgb24to16; break;
1470
        case 0x48: conv= rgb32to16; break;
1471
        case 0x63: conv= rgb15to24; break;
1472
        case 0x64: conv= rgb16to24; break;
1473
        case 0x68: conv= rgb32to24; break;
1474
        case 0x83: conv= rgb15to32; break;
1475
        case 0x84: conv= rgb16to32; break;
1476
        case 0x86: conv= rgb24to32; break;
1477
        }
1478
    } else if (  (isBGRinInt(srcFormat) && isRGBinInt(dstFormat))
1479
             || (isRGBinInt(srcFormat) && isBGRinInt(dstFormat))) {
1480
        switch(srcId | (dstId<<4)) {
1481
        case 0x33: conv= rgb15tobgr15; break;
1482
        case 0x34: conv= rgb16tobgr15; break;
1483
        case 0x36: conv= rgb24tobgr15; break;
1484
        case 0x38: conv= rgb32tobgr15; break;
1485
        case 0x43: conv= rgb15tobgr16; break;
1486
        case 0x44: conv= rgb16tobgr16; break;
1487
        case 0x46: conv= rgb24tobgr16; break;
1488
        case 0x48: conv= rgb32tobgr16; break;
1489
        case 0x63: conv= rgb15tobgr24; break;
1490
        case 0x64: conv= rgb16tobgr24; break;
1491
        case 0x66: conv= rgb24tobgr24; break;
1492
        case 0x68: conv= rgb32tobgr24; break;
1493
        case 0x83: conv= rgb15tobgr32; break;
1494
        case 0x84: conv= rgb16tobgr32; break;
1495
        case 0x86: conv= rgb24tobgr32; break;
1496
        }
1497
    }
1498

    
1499
    if (!conv) {
1500
        av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
1501
               sws_format_name(srcFormat), sws_format_name(dstFormat));
1502
    } else {
1503
        const uint8_t *srcPtr= src[0];
1504
              uint8_t *dstPtr= dst[0];
1505
        if ((srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1) && !isRGBA32(dstFormat))
1506
            srcPtr += ALT32_CORR;
1507

    
1508
        if ((dstFormat == PIX_FMT_RGB32_1 || dstFormat == PIX_FMT_BGR32_1) && !isRGBA32(srcFormat))
1509
            dstPtr += ALT32_CORR;
1510

    
1511
        if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)
1512
            conv(srcPtr, dstPtr + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);
1513
        else {
1514
            int i;
1515
            dstPtr += dstStride[0]*srcSliceY;
1516

    
1517
            for (i=0; i<srcSliceH; i++) {
1518
                conv(srcPtr, dstPtr, c->srcW*srcBpp);
1519
                srcPtr+= srcStride[0];
1520
                dstPtr+= dstStride[0];
1521
            }
1522
        }
1523
    }
1524
    return srcSliceH;
1525
}
1526

    
1527
static int bgr24ToYv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1528
                              int srcSliceH, uint8_t* dst[], int dstStride[])
1529
{
1530
    rgb24toyv12(
1531
        src[0],
1532
        dst[0]+ srcSliceY    *dstStride[0],
1533
        dst[1]+(srcSliceY>>1)*dstStride[1],
1534
        dst[2]+(srcSliceY>>1)*dstStride[2],
1535
        c->srcW, srcSliceH,
1536
        dstStride[0], dstStride[1], srcStride[0]);
1537
    if (dst[3])
1538
        fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
1539
    return srcSliceH;
1540
}
1541

    
1542
static int yvu9ToYv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1543
                             int srcSliceH, uint8_t* dst[], int dstStride[])
1544
{
1545
    int i;
1546

    
1547
    /* copy Y */
1548
    if (srcStride[0]==dstStride[0] && srcStride[0] > 0)
1549
        memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);
1550
    else {
1551
        const uint8_t *srcPtr= src[0];
1552
        uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1553

    
1554
        for (i=0; i<srcSliceH; i++) {
1555
            memcpy(dstPtr, srcPtr, c->srcW);
1556
            srcPtr+= srcStride[0];
1557
            dstPtr+= dstStride[0];
1558
        }
1559
    }
1560

    
1561
    if (c->dstFormat==PIX_FMT_YUV420P || c->dstFormat==PIX_FMT_YUVA420P) {
1562
        planar2x(src[1], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,
1563
                 srcSliceH >> 2, srcStride[1], dstStride[1]);
1564
        planar2x(src[2], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,
1565
                 srcSliceH >> 2, srcStride[2], dstStride[2]);
1566
    } else {
1567
        planar2x(src[1], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,
1568
                 srcSliceH >> 2, srcStride[1], dstStride[2]);
1569
        planar2x(src[2], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,
1570
                 srcSliceH >> 2, srcStride[2], dstStride[1]);
1571
    }
1572
    if (dst[3])
1573
        fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
1574
    return srcSliceH;
1575
}
1576

    
1577
/* unscaled copy like stuff (assumes nearly identical formats) */
1578
static int packedCopyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1579
                             int srcSliceH, uint8_t* dst[], int dstStride[])
1580
{
1581
    if (dstStride[0]==srcStride[0] && srcStride[0] > 0)
1582
        memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);
1583
    else {
1584
        int i;
1585
        const uint8_t *srcPtr= src[0];
1586
        uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1587
        int length=0;
1588

    
1589
        /* universal length finder */
1590
        while(length+c->srcW <= FFABS(dstStride[0])
1591
           && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;
1592
        assert(length!=0);
1593

    
1594
        for (i=0; i<srcSliceH; i++) {
1595
            memcpy(dstPtr, srcPtr, length);
1596
            srcPtr+= srcStride[0];
1597
            dstPtr+= dstStride[0];
1598
        }
1599
    }
1600
    return srcSliceH;
1601
}
1602

    
1603
static int planarCopyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1604
                             int srcSliceH, uint8_t* dst[], int dstStride[])
1605
{
1606
    int plane, i, j;
1607
    for (plane=0; plane<4; plane++) {
1608
        int length= (plane==0 || plane==3) ? c->srcW  : -((-c->srcW  )>>c->chrDstHSubSample);
1609
        int y=      (plane==0 || plane==3) ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);
1610
        int height= (plane==0 || plane==3) ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);
1611
        const uint8_t *srcPtr= src[plane];
1612
        uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;
1613

    
1614
        if (!dst[plane]) continue;
1615
        // ignore palette for GRAY8
1616
        if (plane == 1 && !dst[2]) continue;
1617
        if (!src[plane] || (plane == 1 && !src[2])) {
1618
            if(is16BPS(c->dstFormat))
1619
                length*=2;
1620
            fillPlane(dst[plane], dstStride[plane], length, height, y, (plane==3) ? 255 : 128);
1621
        } else {
1622
            if(is16BPS(c->srcFormat) && !is16BPS(c->dstFormat)) {
1623
                if (!isBE(c->srcFormat)) srcPtr++;
1624
                for (i=0; i<height; i++) {
1625
                    for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];
1626
                    srcPtr+= srcStride[plane];
1627
                    dstPtr+= dstStride[plane];
1628
                }
1629
            } else if(!is16BPS(c->srcFormat) && is16BPS(c->dstFormat)) {
1630
                for (i=0; i<height; i++) {
1631
                    for (j=0; j<length; j++) {
1632
                        dstPtr[ j<<1   ] = srcPtr[j];
1633
                        dstPtr[(j<<1)+1] = srcPtr[j];
1634
                    }
1635
                    srcPtr+= srcStride[plane];
1636
                    dstPtr+= dstStride[plane];
1637
                }
1638
            } else if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat)
1639
                  && isBE(c->srcFormat) != isBE(c->dstFormat)) {
1640

    
1641
                for (i=0; i<height; i++) {
1642
                    for (j=0; j<length; j++)
1643
                        ((uint16_t*)dstPtr)[j] = bswap_16(((const uint16_t*)srcPtr)[j]);
1644
                    srcPtr+= srcStride[plane];
1645
                    dstPtr+= dstStride[plane];
1646
                }
1647
            } else if (dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)
1648
                memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);
1649
            else {
1650
                if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat))
1651
                    length*=2;
1652
                for (i=0; i<height; i++) {
1653
                    memcpy(dstPtr, srcPtr, length);
1654
                    srcPtr+= srcStride[plane];
1655
                    dstPtr+= dstStride[plane];
1656
                }
1657
            }
1658
        }
1659
    }
1660
    return srcSliceH;
1661
}
1662

    
1663
int ff_hardcodedcpuflags(void)
1664
{
1665
    int flags = 0;
1666
#if   COMPILE_TEMPLATE_MMX2
1667
    flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;
1668
#elif COMPILE_TEMPLATE_AMD3DNOW
1669
    flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;
1670
#elif COMPILE_TEMPLATE_MMX
1671
    flags |= SWS_CPU_CAPS_MMX;
1672
#elif COMPILE_TEMPLATE_ALTIVEC
1673
    flags |= SWS_CPU_CAPS_ALTIVEC;
1674
#elif ARCH_BFIN
1675
    flags |= SWS_CPU_CAPS_BFIN;
1676
#endif
1677
    return flags;
1678
}
1679

    
1680
void ff_get_unscaled_swscale(SwsContext *c)
1681
{
1682
    const enum PixelFormat srcFormat = c->srcFormat;
1683
    const enum PixelFormat dstFormat = c->dstFormat;
1684
    const int flags = c->flags;
1685
    const int dstH = c->dstH;
1686
    int needsDither;
1687

    
1688
    needsDither= isAnyRGB(dstFormat)
1689
        &&  c->dstFormatBpp < 24
1690
        && (c->dstFormatBpp < c->srcFormatBpp || (!isAnyRGB(srcFormat)));
1691

    
1692
    /* yv12_to_nv12 */
1693
    if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21)) {
1694
        c->swScale= planarToNv12Wrapper;
1695
    }
1696
    /* yuv2bgr */
1697
    if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P || srcFormat==PIX_FMT_YUVA420P) && isAnyRGB(dstFormat)
1698
        && !(flags & SWS_ACCURATE_RND) && !(dstH&1)) {
1699
        c->swScale= ff_yuv2rgb_get_func_ptr(c);
1700
    }
1701

    
1702
    if (srcFormat==PIX_FMT_YUV410P && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_BITEXACT)) {
1703
        c->swScale= yvu9ToYv12Wrapper;
1704
    }
1705

    
1706
    /* bgr24toYV12 */
1707
    if (srcFormat==PIX_FMT_BGR24 && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_ACCURATE_RND))
1708
        c->swScale= bgr24ToYv12Wrapper;
1709

    
1710
    /* RGB/BGR -> RGB/BGR (no dither needed forms) */
1711
    if (   isAnyRGB(srcFormat)
1712
        && isAnyRGB(dstFormat)
1713
        && srcFormat != PIX_FMT_BGR8      && dstFormat != PIX_FMT_BGR8
1714
        && srcFormat != PIX_FMT_RGB8      && dstFormat != PIX_FMT_RGB8
1715
        && srcFormat != PIX_FMT_BGR4      && dstFormat != PIX_FMT_BGR4
1716
        && srcFormat != PIX_FMT_RGB4      && dstFormat != PIX_FMT_RGB4
1717
        && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE
1718
        && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE
1719
        && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK
1720
        && srcFormat != PIX_FMT_MONOWHITE && dstFormat != PIX_FMT_MONOWHITE
1721
        && srcFormat != PIX_FMT_RGB48LE   && dstFormat != PIX_FMT_RGB48LE
1722
        && srcFormat != PIX_FMT_RGB48BE   && dstFormat != PIX_FMT_RGB48BE
1723
        && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))
1724
        c->swScale= rgbToRgbWrapper;
1725

    
1726
    if ((usePal(srcFormat) && (
1727
        dstFormat == PIX_FMT_RGB32   ||
1728
        dstFormat == PIX_FMT_RGB32_1 ||
1729
        dstFormat == PIX_FMT_RGB24   ||
1730
        dstFormat == PIX_FMT_BGR32   ||
1731
        dstFormat == PIX_FMT_BGR32_1 ||
1732
        dstFormat == PIX_FMT_BGR24)))
1733
        c->swScale= palToRgbWrapper;
1734

    
1735
    if (srcFormat == PIX_FMT_YUV422P) {
1736
        if (dstFormat == PIX_FMT_YUYV422)
1737
            c->swScale= yuv422pToYuy2Wrapper;
1738
        else if (dstFormat == PIX_FMT_UYVY422)
1739
            c->swScale= yuv422pToUyvyWrapper;
1740
    }
1741

    
1742
    /* LQ converters if -sws 0 or -sws 4*/
1743
    if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)) {
1744
        /* yv12_to_yuy2 */
1745
        if (srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) {
1746
            if (dstFormat == PIX_FMT_YUYV422)
1747
                c->swScale= planarToYuy2Wrapper;
1748
            else if (dstFormat == PIX_FMT_UYVY422)
1749
                c->swScale= planarToUyvyWrapper;
1750
        }
1751
    }
1752
    if(srcFormat == PIX_FMT_YUYV422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))
1753
        c->swScale= yuyvToYuv420Wrapper;
1754
    if(srcFormat == PIX_FMT_UYVY422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))
1755
        c->swScale= uyvyToYuv420Wrapper;
1756
    if(srcFormat == PIX_FMT_YUYV422 && dstFormat == PIX_FMT_YUV422P)
1757
        c->swScale= yuyvToYuv422Wrapper;
1758
    if(srcFormat == PIX_FMT_UYVY422 && dstFormat == PIX_FMT_YUV422P)
1759
        c->swScale= uyvyToYuv422Wrapper;
1760

    
1761
#ifdef COMPILE_ALTIVEC
1762
    if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&
1763
        !(c->flags & SWS_BITEXACT) &&
1764
        srcFormat == PIX_FMT_YUV420P) {
1765
        // unscaled YV12 -> packed YUV, we want speed
1766
        if (dstFormat == PIX_FMT_YUYV422)
1767
            c->swScale= yv12toyuy2_unscaled_altivec;
1768
        else if (dstFormat == PIX_FMT_UYVY422)
1769
            c->swScale= yv12touyvy_unscaled_altivec;
1770
    }
1771
#endif
1772

    
1773
    /* simple copy */
1774
    if (  srcFormat == dstFormat
1775
        || (srcFormat == PIX_FMT_YUVA420P && dstFormat == PIX_FMT_YUV420P)
1776
        || (srcFormat == PIX_FMT_YUV420P && dstFormat == PIX_FMT_YUVA420P)
1777
        || (isPlanarYUV(srcFormat) && isGray(dstFormat))
1778
        || (isPlanarYUV(dstFormat) && isGray(srcFormat))
1779
        || (isGray(dstFormat) && isGray(srcFormat))
1780
        || (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat)
1781
            && c->chrDstHSubSample == c->chrSrcHSubSample
1782
            && c->chrDstVSubSample == c->chrSrcVSubSample
1783
            && dstFormat != PIX_FMT_NV12 && dstFormat != PIX_FMT_NV21
1784
            && srcFormat != PIX_FMT_NV12 && srcFormat != PIX_FMT_NV21))
1785
    {
1786
        if (isPacked(c->srcFormat))
1787
            c->swScale= packedCopyWrapper;
1788
        else /* Planar YUV or gray */
1789
            c->swScale= planarCopyWrapper;
1790
    }
1791
#if ARCH_BFIN
1792
    if (flags & SWS_CPU_CAPS_BFIN)
1793
        ff_bfin_get_unscaled_swscale (c);
1794
#endif
1795
}
1796

    
1797
static void reset_ptr(const uint8_t* src[], int format)
1798
{
1799
    if(!isALPHA(format))
1800
        src[3]=NULL;
1801
    if(!isPlanarYUV(format)) {
1802
        src[3]=src[2]=NULL;
1803

    
1804
        if (!usePal(format))
1805
            src[1]= NULL;
1806
    }
1807
}
1808

    
1809
/**
1810
 * swscale wrapper, so we don't need to export the SwsContext.
1811
 * Assumes planar YUV to be in YUV order instead of YVU.
1812
 */
1813
int sws_scale(SwsContext *c, const uint8_t* const src[], const int srcStride[], int srcSliceY,
1814
              int srcSliceH, uint8_t* const dst[], const int dstStride[])
1815
{
1816
    int i;
1817
    const uint8_t* src2[4]= {src[0], src[1], src[2], src[3]};
1818
    uint8_t* dst2[4]= {dst[0], dst[1], dst[2], dst[3]};
1819

    
1820
    // do not mess up sliceDir if we have a "trailing" 0-size slice
1821
    if (srcSliceH == 0)
1822
        return 0;
1823

    
1824
    if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
1825
        av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");
1826
        return 0;
1827
    }
1828
    if (c->sliceDir == 0) {
1829
        if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;
1830
    }
1831

    
1832
    if (usePal(c->srcFormat)) {
1833
        for (i=0; i<256; i++) {
1834
            int p, r, g, b,y,u,v;
1835
            if(c->srcFormat == PIX_FMT_PAL8) {
1836
                p=((const uint32_t*)(src[1]))[i];
1837
                r= (p>>16)&0xFF;
1838
                g= (p>> 8)&0xFF;
1839
                b=  p     &0xFF;
1840
            } else if(c->srcFormat == PIX_FMT_RGB8) {
1841
                r= (i>>5    )*36;
1842
                g= ((i>>2)&7)*36;
1843
                b= (i&3     )*85;
1844
            } else if(c->srcFormat == PIX_FMT_BGR8) {
1845
                b= (i>>6    )*85;
1846
                g= ((i>>3)&7)*36;
1847
                r= (i&7     )*36;
1848
            } else if(c->srcFormat == PIX_FMT_RGB4_BYTE) {
1849
                r= (i>>3    )*255;
1850
                g= ((i>>1)&3)*85;
1851
                b= (i&1     )*255;
1852
            } else if(c->srcFormat == PIX_FMT_GRAY8) {
1853
                r = g = b = i;
1854
            } else {
1855
                assert(c->srcFormat == PIX_FMT_BGR4_BYTE);
1856
                b= (i>>3    )*255;
1857
                g= ((i>>1)&3)*85;
1858
                r= (i&1     )*255;
1859
            }
1860
            y= av_clip_uint8((RY*r + GY*g + BY*b + ( 33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
1861
            u= av_clip_uint8((RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
1862
            v= av_clip_uint8((RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
1863
            c->pal_yuv[i]= y + (u<<8) + (v<<16);
1864

    
1865
            switch(c->dstFormat) {
1866
            case PIX_FMT_BGR32:
1867
#if !HAVE_BIGENDIAN
1868
            case PIX_FMT_RGB24:
1869
#endif
1870
                c->pal_rgb[i]=  r + (g<<8) + (b<<16);
1871
                break;
1872
            case PIX_FMT_BGR32_1:
1873
#if HAVE_BIGENDIAN
1874
            case PIX_FMT_BGR24:
1875
#endif
1876
                c->pal_rgb[i]= (r + (g<<8) + (b<<16)) << 8;
1877
                break;
1878
            case PIX_FMT_RGB32_1:
1879
#if HAVE_BIGENDIAN
1880
            case PIX_FMT_RGB24:
1881
#endif
1882
                c->pal_rgb[i]= (b + (g<<8) + (r<<16)) << 8;
1883
                break;
1884
            case PIX_FMT_RGB32:
1885
#if !HAVE_BIGENDIAN
1886
            case PIX_FMT_BGR24:
1887
#endif
1888
            default:
1889
                c->pal_rgb[i]=  b + (g<<8) + (r<<16);
1890
            }
1891
        }
1892
    }
1893

    
1894
    // copy strides, so they can safely be modified
1895
    if (c->sliceDir == 1) {
1896
        // slices go from top to bottom
1897
        int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2], srcStride[3]};
1898
        int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2], dstStride[3]};
1899

    
1900
        reset_ptr(src2, c->srcFormat);
1901
        reset_ptr((const uint8_t**)dst2, c->dstFormat);
1902

    
1903
        /* reset slice direction at end of frame */
1904
        if (srcSliceY + srcSliceH == c->srcH)
1905
            c->sliceDir = 0;
1906

    
1907
        return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2, dstStride2);
1908
    } else {
1909
        // slices go from bottom to top => we flip the image internally
1910
        int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2], -srcStride[3]};
1911
        int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2], -dstStride[3]};
1912

    
1913
        src2[0] += (srcSliceH-1)*srcStride[0];
1914
        if (!usePal(c->srcFormat))
1915
            src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];
1916
        src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];
1917
        src2[3] += (srcSliceH-1)*srcStride[3];
1918
        dst2[0] += ( c->dstH                      -1)*dstStride[0];
1919
        dst2[1] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1];
1920
        dst2[2] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2];
1921
        dst2[3] += ( c->dstH                      -1)*dstStride[3];
1922

    
1923
        reset_ptr(src2, c->srcFormat);
1924
        reset_ptr((const uint8_t**)dst2, c->dstFormat);
1925

    
1926
        /* reset slice direction at end of frame */
1927
        if (!srcSliceY)
1928
            c->sliceDir = 0;
1929

    
1930
        return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);
1931
    }
1932
}
1933

    
1934
#if LIBSWSCALE_VERSION_MAJOR < 1
1935
int sws_scale_ordered(SwsContext *c, const uint8_t* const src[], int srcStride[], int srcSliceY,
1936
                      int srcSliceH, uint8_t* dst[], int dstStride[])
1937
{
1938
    return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);
1939
}
1940
#endif