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/*
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 * software RGB to RGB converter
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 * pluralize by software PAL8 to RGB converter
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 *              software YUV to YUV converter
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 *              software YUV to RGB converter
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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 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.
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 */
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#include <inttypes.h>
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#include "config.h"
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#include "libavutil/x86_cpu.h"
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#include "libavutil/bswap.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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#define FAST_BGR2YV12 // use 7-bit instead of 15-bit coefficients
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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(CONFIG_GPL)
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DECLARE_ASM_CONST(8, uint64_t, mmx_null)     = 0x0000000000000000ULL;
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DECLARE_ASM_CONST(8, uint64_t, mmx_one)      = 0xFFFFFFFFFFFFFFFFULL;
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DECLARE_ASM_CONST(8, uint64_t, mask32b)      = 0x000000FF000000FFULL;
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DECLARE_ASM_CONST(8, uint64_t, mask32g)      = 0x0000FF000000FF00ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask32r)      = 0x00FF000000FF0000ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask32)       = 0x00FFFFFF00FFFFFFULL;
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DECLARE_ASM_CONST(8, uint64_t, mask3216br)   = 0x00F800F800F800F8ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask3216g)    = 0x0000FC000000FC00ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask3215g)    = 0x0000F8000000F800ULL;
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DECLARE_ASM_CONST(8, uint64_t, mul3216)      = 0x2000000420000004ULL;
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DECLARE_ASM_CONST(8, uint64_t, mul3215)      = 0x2000000820000008ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask24b)      = 0x00FF0000FF0000FFULL;
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DECLARE_ASM_CONST(8, uint64_t, mask24g)      = 0xFF0000FF0000FF00ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask24r)      = 0x0000FF0000FF0000ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask24l)      = 0x0000000000FFFFFFULL;
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DECLARE_ASM_CONST(8, uint64_t, mask24h)      = 0x0000FFFFFF000000ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask24hh)     = 0xffff000000000000ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask24hhh)    = 0xffffffff00000000ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask24hhhh)   = 0xffffffffffff0000ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask15b)      = 0x001F001F001F001FULL; /* 00000000 00011111  xxB */
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DECLARE_ASM_CONST(8, uint64_t, mask15rg)     = 0x7FE07FE07FE07FE0ULL; /* 01111111 11100000  RGx */
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DECLARE_ASM_CONST(8, uint64_t, mask15s)      = 0xFFE0FFE0FFE0FFE0ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask15g)      = 0x03E003E003E003E0ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask15r)      = 0x7C007C007C007C00ULL;
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#define mask16b mask15b
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DECLARE_ASM_CONST(8, uint64_t, mask16g)      = 0x07E007E007E007E0ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask16r)      = 0xF800F800F800F800ULL;
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DECLARE_ASM_CONST(8, uint64_t, red_16mask)   = 0x0000f8000000f800ULL;
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DECLARE_ASM_CONST(8, uint64_t, green_16mask) = 0x000007e0000007e0ULL;
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DECLARE_ASM_CONST(8, uint64_t, blue_16mask)  = 0x0000001f0000001fULL;
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DECLARE_ASM_CONST(8, uint64_t, red_15mask)   = 0x00007c0000007c00ULL;
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DECLARE_ASM_CONST(8, uint64_t, green_15mask) = 0x000003e0000003e0ULL;
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DECLARE_ASM_CONST(8, uint64_t, blue_15mask)  = 0x0000001f0000001fULL;
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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) */
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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 versions, there is 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(CONFIG_GPL)
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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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190
#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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 32-bit C version, and and&add trick by Michael Niedermayer
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*/
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199
void sws_rgb2rgb_init(int flags){
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#if (defined(HAVE_MMX2) || defined(HAVE_3DNOW) || defined(HAVE_MMX))  && defined(CONFIG_GPL)
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    if (flags & SWS_CPU_CAPS_MMX2)
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        rgb2rgb_init_MMX2();
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    else if (flags & SWS_CPU_CAPS_3DNOW)
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        rgb2rgb_init_3DNOW();
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    else if (flags & SWS_CPU_CAPS_MMX)
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        rgb2rgb_init_MMX();
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    else
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#endif /* defined(HAVE_MMX2) || defined(HAVE_3DNOW) || defined(HAVE_MMX) */
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        rgb2rgb_init_C();
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}
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/**
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 * Palette is assumed to contain BGR32.
214
 */
215
void palette8torgb32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
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{
217
    long i;
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/*
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    for (i=0; i<num_pixels; i++)
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        ((unsigned *)dst)[i] = ((unsigned *)palette)[src[i]];
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*/
223

    
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    for (i=0; i<num_pixels; i++)
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    {
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        #ifdef WORDS_BIGENDIAN
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            dst[3]= palette[src[i]*4+2];
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            dst[2]= palette[src[i]*4+1];
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            dst[1]= palette[src[i]*4+0];
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        #else
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        //FIXME slow?
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            dst[0]= palette[src[i]*4+2];
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            dst[1]= palette[src[i]*4+1];
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            dst[2]= palette[src[i]*4+0];
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            //dst[3]= 0; /* do we need this cleansing? */
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        #endif
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        dst+= 4;
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    }
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}
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void palette8tobgr32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
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{
243
    long i;
244
    for (i=0; i<num_pixels; i++)
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    {
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        #ifdef WORDS_BIGENDIAN
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            dst[3]= palette[src[i]*4+0];
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            dst[2]= palette[src[i]*4+1];
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            dst[1]= palette[src[i]*4+2];
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        #else
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            //FIXME slow?
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            dst[0]= palette[src[i]*4+0];
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            dst[1]= palette[src[i]*4+1];
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            dst[2]= palette[src[i]*4+2];
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            //dst[3]= 0; /* do we need this cleansing? */
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        #endif
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258
        dst+= 4;
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    }
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}
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/**
263
 * Palette is assumed to contain BGR32.
264
 */
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void palette8torgb24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
266
{
267
    long i;
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/*
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    Writes 1 byte too much and might cause alignment issues on some architectures?
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    for (i=0; i<num_pixels; i++)
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        ((unsigned *)(&dst[i*3])) = ((unsigned *)palette)[src[i]];
272
*/
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    for (i=0; i<num_pixels; i++)
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    {
275
        //FIXME slow?
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        dst[0]= palette[src[i]*4+2];
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        dst[1]= palette[src[i]*4+1];
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        dst[2]= palette[src[i]*4+0];
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        dst+= 3;
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    }
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}
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void palette8tobgr24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
284
{
285
    long i;
286
/*
287
    Writes 1 byte too much and might cause alignment issues on some architectures?
288
    for (i=0; i<num_pixels; i++)
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        ((unsigned *)(&dst[i*3])) = ((unsigned *)palette)[src[i]];
290
*/
291
    for (i=0; i<num_pixels; i++)
292
    {
293
        //FIXME slow?
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        dst[0]= palette[src[i]*4+0];
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        dst[1]= palette[src[i]*4+1];
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        dst[2]= palette[src[i]*4+2];
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        dst+= 3;
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    }
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}
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/**
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 * Palette is assumed to contain BGR16, see rgb32to16 to convert the palette.
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 */
304
void palette8torgb16(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
305
{
306
    long i;
307
    for (i=0; i<num_pixels; i++)
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        ((uint16_t *)dst)[i] = ((const uint16_t *)palette)[src[i]];
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}
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void palette8tobgr16(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
311
{
312
    long i;
313
    for (i=0; i<num_pixels; i++)
314
        ((uint16_t *)dst)[i] = bswap_16(((const uint16_t *)palette)[src[i]]);
315
}
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/**
318
 * Palette is assumed to contain BGR15, see rgb32to15 to convert the palette.
319
 */
320
void palette8torgb15(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
321
{
322
    long i;
323
    for (i=0; i<num_pixels; i++)
324
        ((uint16_t *)dst)[i] = ((const uint16_t *)palette)[src[i]];
325
}
326
void palette8tobgr15(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
327
{
328
    long i;
329
    for (i=0; i<num_pixels; i++)
330
        ((uint16_t *)dst)[i] = bswap_16(((const uint16_t *)palette)[src[i]]);
331
}
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void rgb32tobgr24(const uint8_t *src, uint8_t *dst, long src_size)
334
{
335
    long i;
336
    long num_pixels = src_size >> 2;
337
    for (i=0; i<num_pixels; i++)
338
    {
339
        #ifdef WORDS_BIGENDIAN
340
            /* RGB32 (= A,B,G,R) -> BGR24 (= B,G,R) */
341
            dst[3*i + 0] = src[4*i + 1];
342
            dst[3*i + 1] = src[4*i + 2];
343
            dst[3*i + 2] = src[4*i + 3];
344
        #else
345
            dst[3*i + 0] = src[4*i + 2];
346
            dst[3*i + 1] = src[4*i + 1];
347
            dst[3*i + 2] = src[4*i + 0];
348
        #endif
349
    }
350
}
351

    
352
void rgb24tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
353
{
354
    long i;
355
    for (i=0; 3*i<src_size; i++)
356
    {
357
        #ifdef WORDS_BIGENDIAN
358
            /* RGB24 (= R,G,B) -> BGR32 (= A,R,G,B) */
359
            dst[4*i + 0] = 0;
360
            dst[4*i + 1] = src[3*i + 0];
361
            dst[4*i + 2] = src[3*i + 1];
362
            dst[4*i + 3] = src[3*i + 2];
363
        #else
364
            dst[4*i + 0] = src[3*i + 2];
365
            dst[4*i + 1] = src[3*i + 1];
366
            dst[4*i + 2] = src[3*i + 0];
367
            dst[4*i + 3] = 0;
368
        #endif
369
    }
370
}
371

    
372
void rgb16tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
373
{
374
    const uint16_t *end;
375
    uint8_t *d = dst;
376
    const uint16_t *s = (const uint16_t *)src;
377
    end = s + src_size/2;
378
    while (s < end)
379
    {
380
        register uint16_t bgr;
381
        bgr = *s++;
382
        #ifdef WORDS_BIGENDIAN
383
            *d++ = 0;
384
            *d++ = (bgr&0x1F)<<3;
385
            *d++ = (bgr&0x7E0)>>3;
386
            *d++ = (bgr&0xF800)>>8;
387
        #else
388
            *d++ = (bgr&0xF800)>>8;
389
            *d++ = (bgr&0x7E0)>>3;
390
            *d++ = (bgr&0x1F)<<3;
391
            *d++ = 0;
392
        #endif
393
    }
394
}
395

    
396
void rgb16tobgr24(const uint8_t *src, uint8_t *dst, long src_size)
397
{
398
    const uint16_t *end;
399
    uint8_t *d = dst;
400
    const uint16_t *s = (const uint16_t *)src;
401
    end = s + src_size/2;
402
    while (s < end)
403
    {
404
        register uint16_t bgr;
405
        bgr = *s++;
406
        *d++ = (bgr&0xF800)>>8;
407
        *d++ = (bgr&0x7E0)>>3;
408
        *d++ = (bgr&0x1F)<<3;
409
    }
410
}
411

    
412
void rgb16tobgr16(const uint8_t *src, uint8_t *dst, long src_size)
413
{
414
    long i;
415
    long num_pixels = src_size >> 1;
416

    
417
    for (i=0; i<num_pixels; i++)
418
    {
419
        unsigned b,g,r;
420
        register uint16_t rgb;
421
        rgb = src[2*i];
422
        r = rgb&0x1F;
423
        g = (rgb&0x7E0)>>5;
424
        b = (rgb&0xF800)>>11;
425
        dst[2*i] = (b&0x1F) | ((g&0x3F)<<5) | ((r&0x1F)<<11);
426
    }
427
}
428

    
429
void rgb16tobgr15(const uint8_t *src, uint8_t *dst, long src_size)
430
{
431
    long i;
432
    long num_pixels = src_size >> 1;
433

    
434
    for (i=0; i<num_pixels; i++)
435
    {
436
        unsigned b,g,r;
437
        register uint16_t rgb;
438
        rgb = src[2*i];
439
        r = rgb&0x1F;
440
        g = (rgb&0x7E0)>>5;
441
        b = (rgb&0xF800)>>11;
442
        dst[2*i] = (b&0x1F) | ((g&0x1F)<<5) | ((r&0x1F)<<10);
443
    }
444
}
445

    
446
void rgb15tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
447
{
448
    const uint16_t *end;
449
    uint8_t *d = dst;
450
    const uint16_t *s = (const uint16_t *)src;
451
    end = s + src_size/2;
452
    while (s < end)
453
    {
454
        register uint16_t bgr;
455
        bgr = *s++;
456
        #ifdef WORDS_BIGENDIAN
457
            *d++ = 0;
458
            *d++ = (bgr&0x1F)<<3;
459
            *d++ = (bgr&0x3E0)>>2;
460
            *d++ = (bgr&0x7C00)>>7;
461
        #else
462
            *d++ = (bgr&0x7C00)>>7;
463
            *d++ = (bgr&0x3E0)>>2;
464
            *d++ = (bgr&0x1F)<<3;
465
            *d++ = 0;
466
        #endif
467
    }
468
}
469

    
470
void rgb15tobgr24(const uint8_t *src, uint8_t *dst, long src_size)
471
{
472
    const uint16_t *end;
473
    uint8_t *d = dst;
474
    const uint16_t *s = (const uint16_t *)src;
475
    end = s + src_size/2;
476
    while (s < end)
477
    {
478
        register uint16_t bgr;
479
        bgr = *s++;
480
        *d++ = (bgr&0x7C00)>>7;
481
        *d++ = (bgr&0x3E0)>>2;
482
        *d++ = (bgr&0x1F)<<3;
483
    }
484
}
485

    
486
void rgb15tobgr16(const uint8_t *src, uint8_t *dst, long src_size)
487
{
488
    long i;
489
    long num_pixels = src_size >> 1;
490

    
491
    for (i=0; i<num_pixels; i++)
492
    {
493
        unsigned b,g,r;
494
        register uint16_t rgb;
495
        rgb = src[2*i];
496
        r = rgb&0x1F;
497
        g = (rgb&0x3E0)>>5;
498
        b = (rgb&0x7C00)>>10;
499
        dst[2*i] = (b&0x1F) | ((g&0x3F)<<5) | ((r&0x1F)<<11);
500
    }
501
}
502

    
503
void rgb15tobgr15(const uint8_t *src, uint8_t *dst, long src_size)
504
{
505
    long i;
506
    long num_pixels = src_size >> 1;
507

    
508
    for (i=0; i<num_pixels; i++)
509
    {
510
        unsigned b,g,r;
511
        register uint16_t rgb;
512
        rgb = src[2*i];
513
        r = rgb&0x1F;
514
        g = (rgb&0x3E0)>>5;
515
        b = (rgb&0x7C00)>>10;
516
        dst[2*i] = (b&0x1F) | ((g&0x1F)<<5) | ((r&0x1F)<<10);
517
    }
518
}
519

    
520
void rgb8tobgr8(const uint8_t *src, uint8_t *dst, long src_size)
521
{
522
    long i;
523
    long num_pixels = src_size;
524
    for (i=0; i<num_pixels; i++)
525
    {
526
        unsigned b,g,r;
527
        register uint8_t rgb;
528
        rgb = src[i];
529
        r = (rgb&0x07);
530
        g = (rgb&0x38)>>3;
531
        b = (rgb&0xC0)>>6;
532
        dst[i] = ((b<<1)&0x07) | ((g&0x07)<<3) | ((r&0x03)<<6);
533
    }
534
}