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ffmpeg / libswscale / rgb2rgb.c @ 4fadc2b4

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/*
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 *
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 *  rgb2rgb.c, Software RGB to RGB convertor
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 *  pluralize by Software PAL8 to RGB convertor
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 *               Software YUV to YUV convertor
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 *               Software YUV to RGB convertor
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 *  Written by Nick Kurshev.
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 *  palette & YUV & runtime CPU stuff by Michael (michaelni@gmx.at)
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 *
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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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 *
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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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 *
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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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#include <inttypes.h>
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#include "config.h"
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#include "rgb2rgb.h"
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#include "swscale.h"
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#include "swscale_internal.h"
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#include "x86_cpu.h"
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#include "bswap.h"
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#ifdef USE_FASTMEMCPY
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#include "libvo/fastmemcpy.h"
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#endif
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#define FAST_BGR2YV12 // use 7 bit coeffs instead of 15bit
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void (*rgb24to32)(const uint8_t *src,uint8_t *dst,long src_size);
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void (*rgb24to16)(const uint8_t *src,uint8_t *dst,long src_size);
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void (*rgb24to15)(const uint8_t *src,uint8_t *dst,long src_size);
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void (*rgb32to24)(const uint8_t *src,uint8_t *dst,long src_size);
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void (*rgb32to16)(const uint8_t *src,uint8_t *dst,long src_size);
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void (*rgb32to15)(const uint8_t *src,uint8_t *dst,long src_size);
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void (*rgb15to16)(const uint8_t *src,uint8_t *dst,long src_size);
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void (*rgb15to24)(const uint8_t *src,uint8_t *dst,long src_size);
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void (*rgb15to32)(const uint8_t *src,uint8_t *dst,long src_size);
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void (*rgb16to15)(const uint8_t *src,uint8_t *dst,long src_size);
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void (*rgb16to24)(const uint8_t *src,uint8_t *dst,long src_size);
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void (*rgb16to32)(const uint8_t *src,uint8_t *dst,long src_size);
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//void (*rgb24tobgr32)(const uint8_t *src, uint8_t *dst, long src_size);
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void (*rgb24tobgr24)(const uint8_t *src, uint8_t *dst, long src_size);
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void (*rgb24tobgr16)(const uint8_t *src, uint8_t *dst, long src_size);
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void (*rgb24tobgr15)(const uint8_t *src, uint8_t *dst, long src_size);
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void (*rgb32tobgr32)(const uint8_t *src, uint8_t *dst, long src_size);
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//void (*rgb32tobgr24)(const uint8_t *src, uint8_t *dst, long src_size);
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void (*rgb32tobgr16)(const uint8_t *src, uint8_t *dst, long src_size);
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void (*rgb32tobgr15)(const uint8_t *src, uint8_t *dst, long src_size);
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void (*yv12toyuy2)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
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        long width, long height,
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        long lumStride, long chromStride, long dstStride);
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void (*yv12touyvy)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
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        long width, long height,
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        long lumStride, long chromStride, long dstStride);
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void (*yuv422ptoyuy2)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
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        long width, long height,
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        long lumStride, long chromStride, long dstStride);
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void (*yuy2toyv12)(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
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        long width, long height,
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        long lumStride, long chromStride, long srcStride);
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void (*rgb24toyv12)(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
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        long width, long height,
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        long lumStride, long chromStride, long srcStride);
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void (*planar2x)(const uint8_t *src, uint8_t *dst, long width, long height,
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        long srcStride, long dstStride);
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void (*interleaveBytes)(uint8_t *src1, uint8_t *src2, uint8_t *dst,
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                            long width, long height, long src1Stride,
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                            long src2Stride, long dstStride);
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void (*vu9_to_vu12)(const uint8_t *src1, const uint8_t *src2,
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                        uint8_t *dst1, uint8_t *dst2,
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                        long width, long height,
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                        long srcStride1, long srcStride2,
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                        long dstStride1, long dstStride2);
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void (*yvu9_to_yuy2)(const uint8_t *src1, const uint8_t *src2, const uint8_t *src3,
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                        uint8_t *dst,
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                        long width, long height,
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                        long srcStride1, long srcStride2,
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                        long srcStride3, long dstStride);
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#if defined(ARCH_X86) || defined(ARCH_X86_64)
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static const uint64_t mmx_null  __attribute__((aligned(8))) = 0x0000000000000000ULL;
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static const uint64_t mmx_one   __attribute__((aligned(8))) = 0xFFFFFFFFFFFFFFFFULL;
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static const uint64_t mask32b  attribute_used __attribute__((aligned(8))) = 0x000000FF000000FFULL;
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static const uint64_t mask32g  attribute_used __attribute__((aligned(8))) = 0x0000FF000000FF00ULL;
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static const uint64_t mask32r  attribute_used __attribute__((aligned(8))) = 0x00FF000000FF0000ULL;
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static const uint64_t mask32   __attribute__((aligned(8))) = 0x00FFFFFF00FFFFFFULL;
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static const uint64_t mask3216br __attribute__((aligned(8)))=0x00F800F800F800F8ULL;
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static const uint64_t mask3216g  __attribute__((aligned(8)))=0x0000FC000000FC00ULL;
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static const uint64_t mask3215g  __attribute__((aligned(8)))=0x0000F8000000F800ULL;
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static const uint64_t mul3216  __attribute__((aligned(8))) = 0x2000000420000004ULL;
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static const uint64_t mul3215  __attribute__((aligned(8))) = 0x2000000820000008ULL;
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static const uint64_t mask24b  attribute_used __attribute__((aligned(8))) = 0x00FF0000FF0000FFULL;
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static const uint64_t mask24g  attribute_used __attribute__((aligned(8))) = 0xFF0000FF0000FF00ULL;
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static const uint64_t mask24r  attribute_used __attribute__((aligned(8))) = 0x0000FF0000FF0000ULL;
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static const uint64_t mask24l  __attribute__((aligned(8))) = 0x0000000000FFFFFFULL;
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static const uint64_t mask24h  __attribute__((aligned(8))) = 0x0000FFFFFF000000ULL;
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static const uint64_t mask24hh  __attribute__((aligned(8))) = 0xffff000000000000ULL;
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static const uint64_t mask24hhh  __attribute__((aligned(8))) = 0xffffffff00000000ULL;
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static const uint64_t mask24hhhh  __attribute__((aligned(8))) = 0xffffffffffff0000ULL;
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static const uint64_t mask15b  __attribute__((aligned(8))) = 0x001F001F001F001FULL; /* 00000000 00011111  xxB */
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static const uint64_t mask15rg __attribute__((aligned(8))) = 0x7FE07FE07FE07FE0ULL; /* 01111111 11100000  RGx */
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static const uint64_t mask15s  __attribute__((aligned(8))) = 0xFFE0FFE0FFE0FFE0ULL;
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static const uint64_t mask15g  __attribute__((aligned(8))) = 0x03E003E003E003E0ULL;
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static const uint64_t mask15r  __attribute__((aligned(8))) = 0x7C007C007C007C00ULL;
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#define mask16b mask15b
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static const uint64_t mask16g  __attribute__((aligned(8))) = 0x07E007E007E007E0ULL;
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static const uint64_t mask16r  __attribute__((aligned(8))) = 0xF800F800F800F800ULL;
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static const uint64_t red_16mask  __attribute__((aligned(8))) = 0x0000f8000000f800ULL;
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static const uint64_t green_16mask __attribute__((aligned(8)))= 0x000007e0000007e0ULL;
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static const uint64_t blue_16mask __attribute__((aligned(8))) = 0x0000001f0000001fULL;
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static const uint64_t red_15mask  __attribute__((aligned(8))) = 0x00007c000000f800ULL;
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static const uint64_t green_15mask __attribute__((aligned(8)))= 0x000003e0000007e0ULL;
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static const uint64_t blue_15mask __attribute__((aligned(8))) = 0x0000001f0000001fULL;
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#ifdef FAST_BGR2YV12
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static const uint64_t bgr2YCoeff  attribute_used __attribute__((aligned(8))) = 0x000000210041000DULL;
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static const uint64_t bgr2UCoeff  attribute_used __attribute__((aligned(8))) = 0x0000FFEEFFDC0038ULL;
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static const uint64_t bgr2VCoeff  attribute_used __attribute__((aligned(8))) = 0x00000038FFD2FFF8ULL;
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#else
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static const uint64_t bgr2YCoeff  attribute_used __attribute__((aligned(8))) = 0x000020E540830C8BULL;
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static const uint64_t bgr2UCoeff  attribute_used __attribute__((aligned(8))) = 0x0000ED0FDAC23831ULL;
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static const uint64_t bgr2VCoeff  attribute_used __attribute__((aligned(8))) = 0x00003831D0E6F6EAULL;
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#endif
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static const uint64_t bgr2YOffset attribute_used __attribute__((aligned(8))) = 0x1010101010101010ULL;
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static const uint64_t bgr2UVOffset attribute_used __attribute__((aligned(8)))= 0x8080808080808080ULL;
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static const uint64_t w1111       attribute_used __attribute__((aligned(8))) = 0x0001000100010001ULL;
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#if 0
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static volatile uint64_t __attribute__((aligned(8))) b5Dither;
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static volatile uint64_t __attribute__((aligned(8))) g5Dither;
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static volatile uint64_t __attribute__((aligned(8))) g6Dither;
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static volatile uint64_t __attribute__((aligned(8))) r5Dither;
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static uint64_t __attribute__((aligned(8))) dither4[2]={
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        0x0103010301030103LL,
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        0x0200020002000200LL,};
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static uint64_t __attribute__((aligned(8))) dither8[2]={
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        0x0602060206020602LL,
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        0x0004000400040004LL,};
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#endif
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#endif /* defined(ARCH_X86) || defined(ARCH_X86_64) */
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#define RGB2YUV_SHIFT 8
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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))
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//Note: we have C, MMX, MMX2, 3DNOW version therse no 3DNOW+MMX2 one
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//Plain C versions
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#undef HAVE_MMX
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#undef HAVE_MMX2
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#undef HAVE_3DNOW
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#undef HAVE_SSE2
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#define RENAME(a) a ## _C
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#include "rgb2rgb_template.c"
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#if defined(ARCH_X86) || defined(ARCH_X86_64)
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//MMX versions
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#undef RENAME
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#define HAVE_MMX
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#undef HAVE_MMX2
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#undef HAVE_3DNOW
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#undef HAVE_SSE2
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#define RENAME(a) a ## _MMX
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#include "rgb2rgb_template.c"
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//MMX2 versions
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#undef RENAME
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#define HAVE_MMX
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#define HAVE_MMX2
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#undef HAVE_3DNOW
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#undef HAVE_SSE2
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#define RENAME(a) a ## _MMX2
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#include "rgb2rgb_template.c"
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//3DNOW versions
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#undef RENAME
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#define HAVE_MMX
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#undef HAVE_MMX2
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#define HAVE_3DNOW
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#undef HAVE_SSE2
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#define RENAME(a) a ## _3DNOW
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#include "rgb2rgb_template.c"
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#endif //ARCH_X86 || ARCH_X86_64
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/*
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 rgb15->rgb16 Original by Strepto/Astral
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 ported to gcc & bugfixed : A'rpi
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 MMX2, 3DNOW optimization by Nick Kurshev
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 32bit c version, and and&add trick by Michael Niedermayer
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*/
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void sws_rgb2rgb_init(int flags){
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#if defined(HAVE_MMX2) || defined(HAVE_3DNOW) || defined(HAVE_MMX)
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        if(flags & SWS_CPU_CAPS_MMX2){
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                rgb15to16= rgb15to16_MMX2;
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                rgb15to24= rgb15to24_MMX2;
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                rgb15to32= rgb15to32_MMX2;
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                rgb16to24= rgb16to24_MMX2;
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                rgb16to32= rgb16to32_MMX2;
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                rgb16to15= rgb16to15_MMX2;
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                rgb24to16= rgb24to16_MMX2;
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                rgb24to15= rgb24to15_MMX2;
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                rgb24to32= rgb24to32_MMX2;
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                rgb32to16= rgb32to16_MMX2;
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                rgb32to15= rgb32to15_MMX2;
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                rgb32to24= rgb32to24_MMX2;
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                rgb24tobgr15= rgb24tobgr15_MMX2;
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                rgb24tobgr16= rgb24tobgr16_MMX2;
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                rgb24tobgr24= rgb24tobgr24_MMX2;
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                rgb32tobgr32= rgb32tobgr32_MMX2;
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                rgb32tobgr16= rgb32tobgr16_MMX2;
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                rgb32tobgr15= rgb32tobgr15_MMX2;
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                yv12toyuy2= yv12toyuy2_MMX2;
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                yv12touyvy= yv12touyvy_MMX2;
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                yuv422ptoyuy2= yuv422ptoyuy2_MMX2;
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                yuy2toyv12= yuy2toyv12_MMX2;
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//                uyvytoyv12= uyvytoyv12_MMX2;
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//                yvu9toyv12= yvu9toyv12_MMX2;
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                planar2x= planar2x_MMX2;
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                rgb24toyv12= rgb24toyv12_MMX2;
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                interleaveBytes= interleaveBytes_MMX2;
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                vu9_to_vu12= vu9_to_vu12_MMX2;
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                yvu9_to_yuy2= yvu9_to_yuy2_MMX2;
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        }else if(flags & SWS_CPU_CAPS_3DNOW){
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                rgb15to16= rgb15to16_3DNOW;
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                rgb15to24= rgb15to24_3DNOW;
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                rgb15to32= rgb15to32_3DNOW;
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                rgb16to24= rgb16to24_3DNOW;
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                rgb16to32= rgb16to32_3DNOW;
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                rgb16to15= rgb16to15_3DNOW;
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                rgb24to16= rgb24to16_3DNOW;
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                rgb24to15= rgb24to15_3DNOW;
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                rgb24to32= rgb24to32_3DNOW;
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                rgb32to16= rgb32to16_3DNOW;
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                rgb32to15= rgb32to15_3DNOW;
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                rgb32to24= rgb32to24_3DNOW;
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                rgb24tobgr15= rgb24tobgr15_3DNOW;
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                rgb24tobgr16= rgb24tobgr16_3DNOW;
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                rgb24tobgr24= rgb24tobgr24_3DNOW;
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                rgb32tobgr32= rgb32tobgr32_3DNOW;
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                rgb32tobgr16= rgb32tobgr16_3DNOW;
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                rgb32tobgr15= rgb32tobgr15_3DNOW;
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                yv12toyuy2= yv12toyuy2_3DNOW;
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                yv12touyvy= yv12touyvy_3DNOW;
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                yuv422ptoyuy2= yuv422ptoyuy2_3DNOW;
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                yuy2toyv12= yuy2toyv12_3DNOW;
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//                uyvytoyv12= uyvytoyv12_3DNOW;
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//                yvu9toyv12= yvu9toyv12_3DNOW;
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                planar2x= planar2x_3DNOW;
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                rgb24toyv12= rgb24toyv12_3DNOW;
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                interleaveBytes= interleaveBytes_3DNOW;
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                vu9_to_vu12= vu9_to_vu12_3DNOW;
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                yvu9_to_yuy2= yvu9_to_yuy2_3DNOW;
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        }else if(flags & SWS_CPU_CAPS_MMX){
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                rgb15to16= rgb15to16_MMX;
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                rgb15to24= rgb15to24_MMX;
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                rgb15to32= rgb15to32_MMX;
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                rgb16to24= rgb16to24_MMX;
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                rgb16to32= rgb16to32_MMX;
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                rgb16to15= rgb16to15_MMX;
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                rgb24to16= rgb24to16_MMX;
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                rgb24to15= rgb24to15_MMX;
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                rgb24to32= rgb24to32_MMX;
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                rgb32to16= rgb32to16_MMX;
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                rgb32to15= rgb32to15_MMX;
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                rgb32to24= rgb32to24_MMX;
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                rgb24tobgr15= rgb24tobgr15_MMX;
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                rgb24tobgr16= rgb24tobgr16_MMX;
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                rgb24tobgr24= rgb24tobgr24_MMX;
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                rgb32tobgr32= rgb32tobgr32_MMX;
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                rgb32tobgr16= rgb32tobgr16_MMX;
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                rgb32tobgr15= rgb32tobgr15_MMX;
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                yv12toyuy2= yv12toyuy2_MMX;
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                yv12touyvy= yv12touyvy_MMX;
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                yuv422ptoyuy2= yuv422ptoyuy2_MMX;
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                yuy2toyv12= yuy2toyv12_MMX;
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//                uyvytoyv12= uyvytoyv12_MMX;
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//                yvu9toyv12= yvu9toyv12_MMX;
298
                planar2x= planar2x_MMX;
299
                rgb24toyv12= rgb24toyv12_MMX;
300
                interleaveBytes= interleaveBytes_MMX;
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                vu9_to_vu12= vu9_to_vu12_MMX;
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                yvu9_to_yuy2= yvu9_to_yuy2_MMX;
303
        }else
304
#endif /* defined(HAVE_MMX2) || defined(HAVE_3DNOW) || defined(HAVE_MMX) */
305
        {
306
                rgb15to16= rgb15to16_C;
307
                rgb15to24= rgb15to24_C;
308
                rgb15to32= rgb15to32_C;
309
                rgb16to24= rgb16to24_C;
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                rgb16to32= rgb16to32_C;
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                rgb16to15= rgb16to15_C;
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                rgb24to16= rgb24to16_C;
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                rgb24to15= rgb24to15_C;
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                rgb24to32= rgb24to32_C;
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                rgb32to16= rgb32to16_C;
316
                rgb32to15= rgb32to15_C;
317
                rgb32to24= rgb32to24_C;
318
                rgb24tobgr15= rgb24tobgr15_C;
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                rgb24tobgr16= rgb24tobgr16_C;
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                rgb24tobgr24= rgb24tobgr24_C;
321
                rgb32tobgr32= rgb32tobgr32_C;
322
                rgb32tobgr16= rgb32tobgr16_C;
323
                rgb32tobgr15= rgb32tobgr15_C;
324
                yv12toyuy2= yv12toyuy2_C;
325
                yv12touyvy= yv12touyvy_C;
326
                yuv422ptoyuy2= yuv422ptoyuy2_C;
327
                yuy2toyv12= yuy2toyv12_C;
328
//                uyvytoyv12= uyvytoyv12_C;
329
//                yvu9toyv12= yvu9toyv12_C;
330
                planar2x= planar2x_C;
331
                rgb24toyv12= rgb24toyv12_C;
332
                interleaveBytes= interleaveBytes_C;
333
                vu9_to_vu12= vu9_to_vu12_C;
334
                yvu9_to_yuy2= yvu9_to_yuy2_C;
335
        }
336
}
337

    
338
/**
339
 * Pallete is assumed to contain bgr32
340
 */
341
void palette8torgb32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
342
{
343
        long i;
344

    
345
/*
346
        for(i=0; i<num_pixels; i++)
347
                ((unsigned *)dst)[i] = ((unsigned *)palette)[ src[i] ];
348
*/
349

    
350
        for(i=0; i<num_pixels; i++)
351
        {
352
                #ifdef WORDS_BIGENDIAN
353
                        dst[3]= palette[ src[i]*4+2 ];
354
                        dst[2]= palette[ src[i]*4+1 ];
355
                        dst[1]= palette[ src[i]*4+0 ];
356
                #else
357
                //FIXME slow?
358
                        dst[0]= palette[ src[i]*4+2 ];
359
                        dst[1]= palette[ src[i]*4+1 ];
360
                        dst[2]= palette[ src[i]*4+0 ];
361
                        //dst[3]= 0; /* do we need this cleansing? */
362
                #endif
363
                dst+= 4;
364
        }
365
}
366

    
367
void palette8tobgr32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
368
{
369
        long i;
370
        for(i=0; i<num_pixels; i++)
371
        {
372
                #ifdef WORDS_BIGENDIAN
373
                        dst[3]= palette[ src[i]*4+0 ];
374
                        dst[2]= palette[ src[i]*4+1 ];
375
                        dst[1]= palette[ src[i]*4+2 ];
376
                #else
377
                        //FIXME slow?
378
                        dst[0]= palette[ src[i]*4+0 ];
379
                        dst[1]= palette[ src[i]*4+1 ];
380
                        dst[2]= palette[ src[i]*4+2 ];
381
                        //dst[3]= 0; /* do we need this cleansing? */
382
                #endif
383
                
384
                dst+= 4;
385
        }
386
}
387

    
388
/**
389
 * Pallete is assumed to contain bgr32
390
 */
391
void palette8torgb24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
392
{
393
        long i;
394
/*
395
        writes 1 byte o much and might cause alignment issues on some architectures?
396
        for(i=0; i<num_pixels; i++)
397
                ((unsigned *)(&dst[i*3])) = ((unsigned *)palette)[ src[i] ];
398
*/
399
        for(i=0; i<num_pixels; i++)
400
        {
401
                //FIXME slow?
402
                dst[0]= palette[ src[i]*4+2 ];
403
                dst[1]= palette[ src[i]*4+1 ];
404
                dst[2]= palette[ src[i]*4+0 ];
405
                dst+= 3;
406
        }
407
}
408

    
409
void palette8tobgr24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
410
{
411
        long i;
412
/*
413
        writes 1 byte o much and might cause alignment issues on some architectures?
414
        for(i=0; i<num_pixels; i++)
415
                ((unsigned *)(&dst[i*3])) = ((unsigned *)palette)[ src[i] ];
416
*/
417
        for(i=0; i<num_pixels; i++)
418
        {
419
                //FIXME slow?
420
                dst[0]= palette[ src[i]*4+0 ];
421
                dst[1]= palette[ src[i]*4+1 ];
422
                dst[2]= palette[ src[i]*4+2 ];
423
                dst+= 3;
424
        }
425
}
426

    
427
/**
428
 * Palette is assumed to contain bgr16, see rgb32to16 to convert the palette
429
 */
430
void palette8torgb16(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
431
{
432
        long i;
433
        for(i=0; i<num_pixels; i++)
434
                ((uint16_t *)dst)[i] = ((uint16_t *)palette)[ src[i] ];
435
}
436
void palette8tobgr16(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
437
{
438
        long i;
439
        for(i=0; i<num_pixels; i++)
440
                ((uint16_t *)dst)[i] = bswap_16(((uint16_t *)palette)[ src[i] ]);
441
}
442

    
443
/**
444
 * Pallete is assumed to contain bgr15, see rgb32to15 to convert the palette
445
 */
446
void palette8torgb15(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
447
{
448
        long i;
449
        for(i=0; i<num_pixels; i++)
450
                ((uint16_t *)dst)[i] = ((uint16_t *)palette)[ src[i] ];
451
}
452
void palette8tobgr15(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
453
{
454
        long i;
455
        for(i=0; i<num_pixels; i++)
456
                ((uint16_t *)dst)[i] = bswap_16(((uint16_t *)palette)[ src[i] ]);
457
}
458

    
459
void rgb32tobgr24(const uint8_t *src, uint8_t *dst, long src_size)
460
{
461
        long i;
462
        long num_pixels = src_size >> 2;
463
        for(i=0; i<num_pixels; i++)
464
        {
465
                #ifdef WORDS_BIGENDIAN
466
                        /* RGB32 (= A,B,G,R) -> BGR24 (= B,G,R) */
467
                        dst[3*i + 0] = src[4*i + 1];
468
                        dst[3*i + 1] = src[4*i + 2];
469
                        dst[3*i + 2] = src[4*i + 3];
470
                #else
471
                        dst[3*i + 0] = src[4*i + 2];
472
                        dst[3*i + 1] = src[4*i + 1];
473
                        dst[3*i + 2] = src[4*i + 0];
474
                #endif
475
        }
476
}
477

    
478
void rgb24tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
479
{
480
        long i;
481
        for(i=0; 3*i<src_size; i++)
482
        {
483
                #ifdef WORDS_BIGENDIAN
484
                        /* RGB24 (= R,G,B) -> BGR32 (= A,R,G,B) */
485
                        dst[4*i + 0] = 0;
486
                        dst[4*i + 1] = src[3*i + 0];
487
                        dst[4*i + 2] = src[3*i + 1];
488
                        dst[4*i + 3] = src[3*i + 2];
489
                #else
490
                        dst[4*i + 0] = src[3*i + 2];
491
                        dst[4*i + 1] = src[3*i + 1];
492
                        dst[4*i + 2] = src[3*i + 0];
493
                        dst[4*i + 3] = 0;
494
                #endif
495
        }
496
}
497

    
498
void rgb16tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
499
{
500
        const uint16_t *end;
501
        uint8_t *d = (uint8_t *)dst;
502
        const uint16_t *s = (uint16_t *)src;
503
        end = s + src_size/2;
504
        while(s < end)
505
        {
506
                register uint16_t bgr;
507
                bgr = *s++;
508
                #ifdef WORDS_BIGENDIAN
509
                        *d++ = 0;
510
                        *d++ = (bgr&0x1F)<<3;
511
                        *d++ = (bgr&0x7E0)>>3;
512
                        *d++ = (bgr&0xF800)>>8;
513
                #else
514
                        *d++ = (bgr&0xF800)>>8;
515
                        *d++ = (bgr&0x7E0)>>3;
516
                        *d++ = (bgr&0x1F)<<3;
517
                        *d++ = 0;
518
                #endif
519
        }
520
}
521

    
522
void rgb16tobgr24(const uint8_t *src, uint8_t *dst, long src_size)
523
{
524
        const uint16_t *end;
525
        uint8_t *d = (uint8_t *)dst;
526
        const uint16_t *s = (const uint16_t *)src;
527
        end = s + src_size/2;
528
        while(s < end)
529
        {
530
                register uint16_t bgr;
531
                bgr = *s++;
532
                *d++ = (bgr&0xF800)>>8;
533
                *d++ = (bgr&0x7E0)>>3;
534
                *d++ = (bgr&0x1F)<<3;
535
        }
536
}
537

    
538
void rgb16tobgr16(const uint8_t *src, uint8_t *dst, long src_size)
539
{
540
        long i;
541
        long num_pixels = src_size >> 1;
542
        
543
        for(i=0; i<num_pixels; i++)
544
        {
545
            unsigned b,g,r;
546
            register uint16_t rgb;
547
            rgb = src[2*i];
548
            r = rgb&0x1F;
549
            g = (rgb&0x7E0)>>5;
550
            b = (rgb&0xF800)>>11;
551
            dst[2*i] = (b&0x1F) | ((g&0x3F)<<5) | ((r&0x1F)<<11);
552
        }
553
}
554

    
555
void rgb16tobgr15(const uint8_t *src, uint8_t *dst, long src_size)
556
{
557
        long i;
558
        long num_pixels = src_size >> 1;
559
        
560
        for(i=0; i<num_pixels; i++)
561
        {
562
            unsigned b,g,r;
563
            register uint16_t rgb;
564
            rgb = src[2*i];
565
            r = rgb&0x1F;
566
            g = (rgb&0x7E0)>>5;
567
            b = (rgb&0xF800)>>11;
568
            dst[2*i] = (b&0x1F) | ((g&0x1F)<<5) | ((r&0x1F)<<10);
569
        }
570
}
571

    
572
void rgb15tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
573
{
574
        const uint16_t *end;
575
        uint8_t *d = (uint8_t *)dst;
576
        const uint16_t *s = (const uint16_t *)src;
577
        end = s + src_size/2;
578
        while(s < end)
579
        {
580
                register uint16_t bgr;
581
                bgr = *s++;
582
                #ifdef WORDS_BIGENDIAN
583
                        *d++ = 0;
584
                        *d++ = (bgr&0x1F)<<3;
585
                        *d++ = (bgr&0x3E0)>>2;
586
                        *d++ = (bgr&0x7C00)>>7;
587
                #else
588
                        *d++ = (bgr&0x7C00)>>7;
589
                        *d++ = (bgr&0x3E0)>>2;
590
                        *d++ = (bgr&0x1F)<<3;
591
                        *d++ = 0;
592
                #endif
593
        }
594
}
595

    
596
void rgb15tobgr24(const uint8_t *src, uint8_t *dst, long src_size)
597
{
598
        const uint16_t *end;
599
        uint8_t *d = (uint8_t *)dst;
600
        const uint16_t *s = (uint16_t *)src;
601
        end = s + src_size/2;
602
        while(s < end)
603
        {
604
                register uint16_t bgr;
605
                bgr = *s++;
606
                *d++ = (bgr&0x7C00)>>7;
607
                *d++ = (bgr&0x3E0)>>2;
608
                *d++ = (bgr&0x1F)<<3;
609
        }
610
}
611

    
612
void rgb15tobgr16(const uint8_t *src, uint8_t *dst, long src_size)
613
{
614
        long i;
615
        long num_pixels = src_size >> 1;
616
        
617
        for(i=0; i<num_pixels; i++)
618
        {
619
            unsigned b,g,r;
620
            register uint16_t rgb;
621
            rgb = src[2*i];
622
            r = rgb&0x1F;
623
            g = (rgb&0x3E0)>>5;
624
            b = (rgb&0x7C00)>>10;
625
            dst[2*i] = (b&0x1F) | ((g&0x3F)<<5) | ((r&0x1F)<<11);
626
        }
627
}
628

    
629
void rgb15tobgr15(const uint8_t *src, uint8_t *dst, long src_size)
630
{
631
        long i;
632
        long num_pixels = src_size >> 1;
633
        
634
        for(i=0; i<num_pixels; i++)
635
        {
636
            unsigned b,g,r;
637
            register uint16_t rgb;
638
            rgb = src[2*i];
639
            r = rgb&0x1F;
640
            g = (rgb&0x3E0)>>5;
641
            b = (rgb&0x7C00)>>10;
642
            dst[2*i] = (b&0x1F) | ((g&0x1F)<<5) | ((r&0x1F)<<10);
643
        }
644
}
645

    
646
void rgb8tobgr8(const uint8_t *src, uint8_t *dst, long src_size)
647
{
648
        long i;
649
        long num_pixels = src_size;
650
        for(i=0; i<num_pixels; i++)
651
        {
652
            unsigned b,g,r;
653
            register uint8_t rgb;
654
            rgb = src[i];
655
            r = (rgb&0x07);
656
            g = (rgb&0x38)>>3;
657
            b = (rgb&0xC0)>>6;
658
            dst[i] = ((b<<1)&0x07) | ((g&0x07)<<3) | ((r&0x03)<<6);
659
        }
660
}