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ffmpeg / libswscale / rgb2rgb.c @ c0038328

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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 Libav.
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 *
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 * Libav is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * Libav 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 GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with Libav; 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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#include <inttypes.h>
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#include "config.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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void (*rgb24tobgr32)(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 (*rgb32tobgr24)(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 (*rgb15tobgr24)(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 (*rgb16tobgr24)(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 (*rgb24tobgr24)(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 (*shuffle_bytes_2103)(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 (*yuv422ptouyvy)(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)(const uint8_t *src1, const 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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void (*uyvytoyuv420)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t *src,
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                     long width, long height,
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                     long lumStride, long chromStride, long srcStride);
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void (*uyvytoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t *src,
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                     long width, long height,
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                     long lumStride, long chromStride, long srcStride);
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void (*yuyvtoyuv420)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t *src,
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                     long width, long height,
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                     long lumStride, long chromStride, long srcStride);
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void (*yuyvtoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t *src,
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                     long width, long height,
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                     long lumStride, long chromStride, long srcStride);
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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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//plain C versions
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#include "rgb2rgb_template.c"
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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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void sws_rgb2rgb_init(int flags)
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{
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    rgb2rgb_init_c();
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#if HAVE_MMX2 || HAVE_AMD3DNOW || HAVE_MMX
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    rgb2rgb_init_x86(flags);
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#endif /* HAVE_MMX2 || HAVE_AMD3DNOW || HAVE_MMX */
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}
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#if LIBSWSCALE_VERSION_MAJOR < 1
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void palette8topacked32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
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{
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    sws_convertPalette8ToPacked32(src, dst, num_pixels, palette);
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}
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void palette8topacked24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
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{
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    sws_convertPalette8ToPacked24(src, dst, num_pixels, palette);
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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] = ((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)
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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] = av_bswap16(((const uint16_t *)palette)[src[i]]);
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}
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#endif
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void rgb32to24(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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#if HAVE_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 rgb24to32(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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#if HAVE_BIGENDIAN
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        /* RGB24 (= R,G,B) -> BGR32 (= A,R,G,B) */
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        dst[4*i + 0] = 255;
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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
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        dst[4*i + 0] = src[3*i + 2];
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        dst[4*i + 1] = src[3*i + 1];
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        dst[4*i + 2] = src[3*i + 0];
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        dst[4*i + 3] = 255;
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#endif
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    }
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}
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void rgb16tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
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{
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    const uint16_t *end;
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    uint8_t *d = dst;
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    const uint16_t *s = (const uint16_t *)src;
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    end = s + src_size/2;
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    while (s < end) {
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        register uint16_t bgr;
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        bgr = *s++;
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#if HAVE_BIGENDIAN
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        *d++ = 255;
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        *d++ = (bgr&0x1F)<<3;
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        *d++ = (bgr&0x7E0)>>3;
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        *d++ = (bgr&0xF800)>>8;
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#else
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        *d++ = (bgr&0xF800)>>8;
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        *d++ = (bgr&0x7E0)>>3;
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        *d++ = (bgr&0x1F)<<3;
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        *d++ = 255;
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#endif
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    }
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}
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void rgb16to24(const uint8_t *src, uint8_t *dst, long src_size)
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{
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    const uint16_t *end;
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    uint8_t *d = dst;
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    const uint16_t *s = (const uint16_t *)src;
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    end = s + src_size/2;
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    while (s < end) {
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        register uint16_t bgr;
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        bgr = *s++;
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        *d++ = (bgr&0xF800)>>8;
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        *d++ = (bgr&0x7E0)>>3;
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        *d++ = (bgr&0x1F)<<3;
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    }
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}
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void rgb16tobgr16(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 >> 1;
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    for (i=0; i<num_pixels; i++) {
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        unsigned rgb = ((const uint16_t*)src)[i];
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        ((uint16_t*)dst)[i] = (rgb>>11) | (rgb&0x7E0) | (rgb<<11);
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    }
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}
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void rgb16tobgr15(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 >> 1;
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    for (i=0; i<num_pixels; i++) {
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        unsigned rgb = ((const uint16_t*)src)[i];
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        ((uint16_t*)dst)[i] = (rgb>>11) | ((rgb&0x7C0)>>1) | ((rgb&0x1F)<<10);
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    }
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}
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void rgb15tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
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{
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    const uint16_t *end;
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    uint8_t *d = dst;
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    const uint16_t *s = (const uint16_t *)src;
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    end = s + src_size/2;
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    while (s < end) {
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        register uint16_t bgr;
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        bgr = *s++;
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#if HAVE_BIGENDIAN
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        *d++ = 255;
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        *d++ = (bgr&0x1F)<<3;
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        *d++ = (bgr&0x3E0)>>2;
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        *d++ = (bgr&0x7C00)>>7;
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#else
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        *d++ = (bgr&0x7C00)>>7;
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        *d++ = (bgr&0x3E0)>>2;
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        *d++ = (bgr&0x1F)<<3;
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        *d++ = 255;
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#endif
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    }
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}
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void rgb15to24(const uint8_t *src, uint8_t *dst, long src_size)
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{
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    const uint16_t *end;
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    uint8_t *d = dst;
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    const uint16_t *s = (const uint16_t *)src;
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    end = s + src_size/2;
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    while (s < end) {
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        register uint16_t bgr;
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        bgr = *s++;
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        *d++ = (bgr&0x7C00)>>7;
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        *d++ = (bgr&0x3E0)>>2;
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        *d++ = (bgr&0x1F)<<3;
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    }
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}
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void rgb15tobgr16(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 >> 1;
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    for (i=0; i<num_pixels; i++) {
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        unsigned rgb = ((const uint16_t*)src)[i];
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        ((uint16_t*)dst)[i] = ((rgb&0x7C00)>>10) | ((rgb&0x3E0)<<1) | (rgb<<11);
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    }
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}
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void rgb15tobgr15(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 >> 1;
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    for (i=0; i<num_pixels; i++) {
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        unsigned br;
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        unsigned rgb = ((const uint16_t*)src)[i];
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        br = rgb&0x7c1F;
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        ((uint16_t*)dst)[i] = (br>>10) | (rgb&0x3E0) | (br<<10);
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    }
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}
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void bgr8torgb8(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;
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    for (i=0; i<num_pixels; i++) {
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        unsigned b,g,r;
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        register uint8_t rgb;
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        rgb = src[i];
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        r = (rgb&0x07);
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        g = (rgb&0x38)>>3;
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        b = (rgb&0xC0)>>6;
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        dst[i] = ((b<<1)&0x07) | ((g&0x07)<<3) | ((r&0x03)<<6);
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    }
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}
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#define DEFINE_SHUFFLE_BYTES(a, b, c, d)                                \
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void shuffle_bytes_##a##b##c##d(const uint8_t *src, uint8_t *dst, long src_size) \
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{                                                                       \
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    long i;                                                             \
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                                                                        \
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    for (i = 0; i < src_size; i+=4) {                                   \
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        dst[i + 0] = src[i + a];                                        \
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        dst[i + 1] = src[i + b];                                        \
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        dst[i + 2] = src[i + c];                                        \
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        dst[i + 3] = src[i + d];                                        \
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    }                                                                   \
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}
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DEFINE_SHUFFLE_BYTES(0, 3, 2, 1);
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DEFINE_SHUFFLE_BYTES(1, 2, 3, 0);
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DEFINE_SHUFFLE_BYTES(3, 0, 1, 2);
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DEFINE_SHUFFLE_BYTES(3, 2, 1, 0);
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