mirror of
https://github.com/nyanmisaka/ffmpeg-rockchip.git
synced 2025-10-30 20:16:42 +08:00
4d7b302c0d
Originally committed as revision 23400 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
548 lines
19 KiB
C
548 lines
19 KiB
C
/*
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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 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 St, 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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#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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#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(CONFIG_GPL)
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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))) = 0x00007c0000007c00ULL;
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static const uint64_t green_15mask __attribute__((aligned(8))) = 0x000003e0000003e0ULL;
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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) */
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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(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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#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)) && 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.
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*/
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void palette8torgb32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
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{
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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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*/
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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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{
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long i;
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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+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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dst+= 4;
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}
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}
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/**
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* Palette is assumed to contain BGR32.
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*/
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void palette8torgb24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
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{
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long i;
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/*
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writes 1 byte o 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] ];
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*/
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for (i=0; i<num_pixels; i++)
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{
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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;
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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)
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{
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long i;
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/*
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writes 1 byte o 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] ];
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*/
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for (i=0; i<num_pixels; i++)
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{
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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;
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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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*/
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void palette8torgb16(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
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{
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long i;
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for (i=0; i<num_pixels; i++)
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((uint16_t *)dst)[i] = ((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)
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{
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long i;
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for (i=0; i<num_pixels; i++)
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((uint16_t *)dst)[i] = bswap_16(((uint16_t *)palette)[ src[i] ]);
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}
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/**
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* Palette is assumed to contain BGR15, see rgb32to15 to convert the palette.
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*/
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void palette8torgb15(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
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{
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long i;
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for (i=0; i<num_pixels; i++)
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((uint16_t *)dst)[i] = ((uint16_t *)palette)[ src[i] ];
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}
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void palette8tobgr15(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
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{
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long i;
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for (i=0; i<num_pixels; i++)
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((uint16_t *)dst)[i] = bswap_16(((uint16_t *)palette)[ src[i] ]);
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}
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void rgb32tobgr24(const uint8_t *src, uint8_t *dst, long src_size)
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{
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long i;
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long num_pixels = src_size >> 2;
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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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/* RGB32 (= A,B,G,R) -> BGR24 (= B,G,R) */
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dst[3*i + 0] = src[4*i + 1];
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dst[3*i + 1] = src[4*i + 2];
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dst[3*i + 2] = src[4*i + 3];
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#else
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dst[3*i + 0] = src[4*i + 2];
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dst[3*i + 1] = src[4*i + 1];
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dst[3*i + 2] = src[4*i + 0];
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#endif
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}
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}
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void rgb24tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
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{
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long i;
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for (i=0; 3*i<src_size; i++)
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{
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#ifdef WORDS_BIGENDIAN
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/* RGB24 (= R,G,B) -> BGR32 (= A,R,G,B) */
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dst[4*i + 0] = 0;
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dst[4*i + 1] = src[3*i + 0];
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dst[4*i + 2] = src[3*i + 1];
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dst[4*i + 3] = src[3*i + 2];
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#else
|
|
dst[4*i + 0] = src[3*i + 2];
|
|
dst[4*i + 1] = src[3*i + 1];
|
|
dst[4*i + 2] = src[3*i + 0];
|
|
dst[4*i + 3] = 0;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
void rgb16tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
|
|
{
|
|
const uint16_t *end;
|
|
uint8_t *d = (uint8_t *)dst;
|
|
const uint16_t *s = (uint16_t *)src;
|
|
end = s + src_size/2;
|
|
while (s < end)
|
|
{
|
|
register uint16_t bgr;
|
|
bgr = *s++;
|
|
#ifdef WORDS_BIGENDIAN
|
|
*d++ = 0;
|
|
*d++ = (bgr&0x1F)<<3;
|
|
*d++ = (bgr&0x7E0)>>3;
|
|
*d++ = (bgr&0xF800)>>8;
|
|
#else
|
|
*d++ = (bgr&0xF800)>>8;
|
|
*d++ = (bgr&0x7E0)>>3;
|
|
*d++ = (bgr&0x1F)<<3;
|
|
*d++ = 0;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
void rgb16tobgr24(const uint8_t *src, uint8_t *dst, long src_size)
|
|
{
|
|
const uint16_t *end;
|
|
uint8_t *d = (uint8_t *)dst;
|
|
const uint16_t *s = (const uint16_t *)src;
|
|
end = s + src_size/2;
|
|
while (s < end)
|
|
{
|
|
register uint16_t bgr;
|
|
bgr = *s++;
|
|
*d++ = (bgr&0xF800)>>8;
|
|
*d++ = (bgr&0x7E0)>>3;
|
|
*d++ = (bgr&0x1F)<<3;
|
|
}
|
|
}
|
|
|
|
void rgb16tobgr16(const uint8_t *src, uint8_t *dst, long src_size)
|
|
{
|
|
long i;
|
|
long num_pixels = src_size >> 1;
|
|
|
|
for (i=0; i<num_pixels; i++)
|
|
{
|
|
unsigned b,g,r;
|
|
register uint16_t rgb;
|
|
rgb = src[2*i];
|
|
r = rgb&0x1F;
|
|
g = (rgb&0x7E0)>>5;
|
|
b = (rgb&0xF800)>>11;
|
|
dst[2*i] = (b&0x1F) | ((g&0x3F)<<5) | ((r&0x1F)<<11);
|
|
}
|
|
}
|
|
|
|
void rgb16tobgr15(const uint8_t *src, uint8_t *dst, long src_size)
|
|
{
|
|
long i;
|
|
long num_pixels = src_size >> 1;
|
|
|
|
for (i=0; i<num_pixels; i++)
|
|
{
|
|
unsigned b,g,r;
|
|
register uint16_t rgb;
|
|
rgb = src[2*i];
|
|
r = rgb&0x1F;
|
|
g = (rgb&0x7E0)>>5;
|
|
b = (rgb&0xF800)>>11;
|
|
dst[2*i] = (b&0x1F) | ((g&0x1F)<<5) | ((r&0x1F)<<10);
|
|
}
|
|
}
|
|
|
|
void rgb15tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
|
|
{
|
|
const uint16_t *end;
|
|
uint8_t *d = (uint8_t *)dst;
|
|
const uint16_t *s = (const uint16_t *)src;
|
|
end = s + src_size/2;
|
|
while (s < end)
|
|
{
|
|
register uint16_t bgr;
|
|
bgr = *s++;
|
|
#ifdef WORDS_BIGENDIAN
|
|
*d++ = 0;
|
|
*d++ = (bgr&0x1F)<<3;
|
|
*d++ = (bgr&0x3E0)>>2;
|
|
*d++ = (bgr&0x7C00)>>7;
|
|
#else
|
|
*d++ = (bgr&0x7C00)>>7;
|
|
*d++ = (bgr&0x3E0)>>2;
|
|
*d++ = (bgr&0x1F)<<3;
|
|
*d++ = 0;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
void rgb15tobgr24(const uint8_t *src, uint8_t *dst, long src_size)
|
|
{
|
|
const uint16_t *end;
|
|
uint8_t *d = (uint8_t *)dst;
|
|
const uint16_t *s = (uint16_t *)src;
|
|
end = s + src_size/2;
|
|
while (s < end)
|
|
{
|
|
register uint16_t bgr;
|
|
bgr = *s++;
|
|
*d++ = (bgr&0x7C00)>>7;
|
|
*d++ = (bgr&0x3E0)>>2;
|
|
*d++ = (bgr&0x1F)<<3;
|
|
}
|
|
}
|
|
|
|
void rgb15tobgr16(const uint8_t *src, uint8_t *dst, long src_size)
|
|
{
|
|
long i;
|
|
long num_pixels = src_size >> 1;
|
|
|
|
for (i=0; i<num_pixels; i++)
|
|
{
|
|
unsigned b,g,r;
|
|
register uint16_t rgb;
|
|
rgb = src[2*i];
|
|
r = rgb&0x1F;
|
|
g = (rgb&0x3E0)>>5;
|
|
b = (rgb&0x7C00)>>10;
|
|
dst[2*i] = (b&0x1F) | ((g&0x3F)<<5) | ((r&0x1F)<<11);
|
|
}
|
|
}
|
|
|
|
void rgb15tobgr15(const uint8_t *src, uint8_t *dst, long src_size)
|
|
{
|
|
long i;
|
|
long num_pixels = src_size >> 1;
|
|
|
|
for (i=0; i<num_pixels; i++)
|
|
{
|
|
unsigned b,g,r;
|
|
register uint16_t rgb;
|
|
rgb = src[2*i];
|
|
r = rgb&0x1F;
|
|
g = (rgb&0x3E0)>>5;
|
|
b = (rgb&0x7C00)>>10;
|
|
dst[2*i] = (b&0x1F) | ((g&0x1F)<<5) | ((r&0x1F)<<10);
|
|
}
|
|
}
|
|
|
|
void rgb8tobgr8(const uint8_t *src, uint8_t *dst, long src_size)
|
|
{
|
|
long i;
|
|
long num_pixels = src_size;
|
|
for (i=0; i<num_pixels; i++)
|
|
{
|
|
unsigned b,g,r;
|
|
register uint8_t rgb;
|
|
rgb = src[i];
|
|
r = (rgb&0x07);
|
|
g = (rgb&0x38)>>3;
|
|
b = (rgb&0xC0)>>6;
|
|
dst[i] = ((b<<1)&0x07) | ((g&0x07)<<3) | ((r&0x03)<<6);
|
|
}
|
|
}
|