libswscale/rgb2rgb.c - nest-android-app/ffmpeg - Git at Google

 /*
  * software RGB to RGB converter
  * pluralize by software PAL8 to RGB converter
  *              software YUV to YUV converter
  *              software YUV to RGB converter
  * Written by Nick Kurshev.
  * palette & YUV & runtime CPU stuff by Michael (michaelni@gmx.at)
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */

 #include <inttypes.h>

 #include "libavutil/attributes.h"
 #include "libavutil/bswap.h"
 #include "config.h"
 #include "rgb2rgb.h"
 #include "swscale.h"
 #include "swscale_internal.h"

 void (*rgb32tobgr24)(const uint8_t *src, uint8_t *dst, int src_size);
 void (*rgb32tobgr16)(const uint8_t *src, uint8_t *dst, int src_size);
 void (*rgb32tobgr15)(const uint8_t *src, uint8_t *dst, int src_size);
 void (*rgb24tobgr32)(const uint8_t *src, uint8_t *dst, int src_size);
 void (*rgb24tobgr24)(const uint8_t *src, uint8_t *dst, int src_size);
 void (*rgb24tobgr16)(const uint8_t *src, uint8_t *dst, int src_size);
 void (*rgb24tobgr15)(const uint8_t *src, uint8_t *dst, int src_size);
 void (*rgb16tobgr24)(const uint8_t *src, uint8_t *dst, int src_size);
 void (*rgb15tobgr24)(const uint8_t *src, uint8_t *dst, int src_size);

 void (*rgb32to16)(const uint8_t *src, uint8_t *dst, int src_size);
 void (*rgb32to15)(const uint8_t *src, uint8_t *dst, int src_size);
 void (*rgb24to16)(const uint8_t *src, uint8_t *dst, int src_size);
 void (*rgb24to15)(const uint8_t *src, uint8_t *dst, int src_size);
 void (*rgb16to32)(const uint8_t *src, uint8_t *dst, int src_size);
 void (*rgb16to15)(const uint8_t *src, uint8_t *dst, int src_size);
 void (*rgb15to16)(const uint8_t *src, uint8_t *dst, int src_size);
 void (*rgb15to32)(const uint8_t *src, uint8_t *dst, int src_size);

 void (*shuffle_bytes_0321)(const uint8_t *src, uint8_t *dst, int src_size);
 void (*shuffle_bytes_2103)(const uint8_t *src, uint8_t *dst, int src_size);

 void (*yv12toyuy2)(const uint8_t *ysrc, const uint8_t *usrc,
                    const uint8_t *vsrc, uint8_t *dst,
                    int width, int height,
                    int lumStride, int chromStride, int dstStride);
 void (*yv12touyvy)(const uint8_t *ysrc, const uint8_t *usrc,
                    const uint8_t *vsrc, uint8_t *dst,
                    int width, int height,
                    int lumStride, int chromStride, int dstStride);
 void (*yuv422ptoyuy2)(const uint8_t *ysrc, const uint8_t *usrc,
                       const uint8_t *vsrc, uint8_t *dst,
                       int width, int height,
                       int lumStride, int chromStride, int dstStride);
 void (*yuv422ptouyvy)(const uint8_t *ysrc, const uint8_t *usrc,
                       const uint8_t *vsrc, uint8_t *dst,
                       int width, int height,
                       int lumStride, int chromStride, int dstStride);
 void (*yuy2toyv12)(const uint8_t *src, uint8_t *ydst,
                    uint8_t *udst, uint8_t *vdst,
                    int width, int height,
                    int lumStride, int chromStride, int srcStride);
 void (*ff_rgb24toyv12)(const uint8_t *src, uint8_t *ydst,
                        uint8_t *udst, uint8_t *vdst,
                        int width, int height,
                        int lumStride, int chromStride, int srcStride,
                        int32_t *rgb2yuv);
 void (*planar2x)(const uint8_t *src, uint8_t *dst, int width, int height,
                  int srcStride, int dstStride);
 void (*interleaveBytes)(const uint8_t *src1, const uint8_t *src2, uint8_t *dst,
                         int width, int height, int src1Stride,
                         int src2Stride, int dstStride);
 void (*deinterleaveBytes)(const uint8_t *src, uint8_t *dst1, uint8_t *dst2,
                           int width, int height, int srcStride,
                           int dst1Stride, int dst2Stride);
 void (*vu9_to_vu12)(const uint8_t *src1, const uint8_t *src2,
                     uint8_t *dst1, uint8_t *dst2,
                     int width, int height,
                     int srcStride1, int srcStride2,
                     int dstStride1, int dstStride2);
 void (*yvu9_to_yuy2)(const uint8_t *src1, const uint8_t *src2,
                      const uint8_t *src3, uint8_t *dst,
                      int width, int height,
                      int srcStride1, int srcStride2,
                      int srcStride3, int dstStride);
 void (*uyvytoyuv420)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
                      const uint8_t *src, int width, int height,
                      int lumStride, int chromStride, int srcStride);
 void (*uyvytoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
                      const uint8_t *src, int width, int height,
                      int lumStride, int chromStride, int srcStride);
 void (*yuyvtoyuv420)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
                      const uint8_t *src, int width, int height,
                      int lumStride, int chromStride, int srcStride);
 void (*yuyvtoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
                      const uint8_t *src, int width, int height,
                      int lumStride, int chromStride, int srcStride);

 #define BY ((int)( 0.098 * (1 << RGB2YUV_SHIFT) + 0.5))
 #define BV ((int)(-0.071 * (1 << RGB2YUV_SHIFT) + 0.5))
 #define BU ((int)( 0.439 * (1 << RGB2YUV_SHIFT) + 0.5))
 #define GY ((int)( 0.504 * (1 << RGB2YUV_SHIFT) + 0.5))
 #define GV ((int)(-0.368 * (1 << RGB2YUV_SHIFT) + 0.5))
 #define GU ((int)(-0.291 * (1 << RGB2YUV_SHIFT) + 0.5))
 #define RY ((int)( 0.257 * (1 << RGB2YUV_SHIFT) + 0.5))
 #define RV ((int)( 0.439 * (1 << RGB2YUV_SHIFT) + 0.5))
 #define RU ((int)(-0.148 * (1 << RGB2YUV_SHIFT) + 0.5))

 //plain C versions
 #include "rgb2rgb_template.c"

 /*
  * RGB15->RGB16 original by Strepto/Astral
  * ported to gcc & bugfixed : A'rpi
  * MMXEXT, 3DNOW optimization by Nick Kurshev
  * 32-bit C version, and and&add trick by Michael Niedermayer
  */

 av_cold void ff_sws_rgb2rgb_init(void)
 {
     rgb2rgb_init_c();
     if (ARCH_X86)
         rgb2rgb_init_x86();
 }

 void rgb32to24(const uint8_t *src, uint8_t *dst, int src_size)
 {
     int i, num_pixels = src_size >> 2;

     for (i = 0; i < num_pixels; i++) {
 #if HAVE_BIGENDIAN
         /* RGB32 (= A,B,G,R) -> BGR24 (= B,G,R) */
         dst[3 * i + 0] = src[4 * i + 1];
         dst[3 * i + 1] = src[4 * i + 2];
         dst[3 * i + 2] = src[4 * i + 3];
 #else
         dst[3 * i + 0] = src[4 * i + 2];
         dst[3 * i + 1] = src[4 * i + 1];
         dst[3 * i + 2] = src[4 * i + 0];
 #endif
     }
 }

 void rgb24to32(const uint8_t *src, uint8_t *dst, int src_size)
 {
     int i;

     for (i = 0; 3 * i < src_size; i++) {
 #if HAVE_BIGENDIAN
         /* RGB24 (= R, G, B) -> BGR32 (= A, R, G, B) */
         dst[4 * i + 0] = 255;
         dst[4 * i + 1] = src[3 * i + 0];
         dst[4 * i + 2] = src[3 * i + 1];
         dst[4 * i + 3] = src[3 * i + 2];
 #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] = 255;
 #endif
     }
 }

 void rgb16tobgr32(const uint8_t *src, uint8_t *dst, int src_size)
 {
     uint8_t *d          = dst;
     const uint16_t *s   = (const uint16_t *)src;
     const uint16_t *end = s + src_size / 2;

     while (s < end) {
         register uint16_t bgr = *s++;
 #if HAVE_BIGENDIAN
         *d++ = 255;
         *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
         *d++ = ((bgr&0x07E0)>>3) | ((bgr&0x07E0)>> 9);
         *d++ = ((bgr&0xF800)>>8) | ((bgr&0xF800)>>13);
 #else
         *d++ = ((bgr&0xF800)>>8) | ((bgr&0xF800)>>13);
         *d++ = ((bgr&0x07E0)>>3) | ((bgr&0x07E0)>> 9);
         *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
         *d++ = 255;
 #endif
     }
 }

 void rgb12to15(const uint8_t *src, uint8_t *dst, int src_size)
 {
     uint16_t rgb, r, g, b;
     uint16_t *d         = (uint16_t *)dst;
     const uint16_t *s   = (const uint16_t *)src;
     const uint16_t *end = s + src_size / 2;

     while (s < end) {
         rgb  = *s++;
         r    = rgb & 0xF00;
         g    = rgb & 0x0F0;
         b    = rgb & 0x00F;
         r    = (r << 3) | ((r & 0x800) >> 1);
         g    = (g << 2) | ((g & 0x080) >> 2);
         b    = (b << 1) | ( b          >> 3);
         *d++ = r | g | b;
     }
 }

 void rgb16to24(const uint8_t *src, uint8_t *dst, int src_size)
 {
     uint8_t *d          = dst;
     const uint16_t *s   = (const uint16_t *)src;
     const uint16_t *end = s + src_size / 2;

     while (s < end) {
         register uint16_t bgr = *s++;
         *d++ = ((bgr&0xF800)>>8) | ((bgr&0xF800)>>13);
         *d++ = ((bgr&0x07E0)>>3) | ((bgr&0x07E0)>> 9);
         *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
     }
 }

 void rgb16tobgr16(const uint8_t *src, uint8_t *dst, int src_size)
 {
     int i, num_pixels = src_size >> 1;

     for (i = 0; i < num_pixels; i++) {
         unsigned rgb         = ((const uint16_t *)src)[i];
         ((uint16_t *)dst)[i] = (rgb >> 11) | (rgb & 0x7E0) | (rgb << 11);
     }
 }

 void rgb16tobgr15(const uint8_t *src, uint8_t *dst, int src_size)
 {
     int i, num_pixels = src_size >> 1;

     for (i = 0; i < num_pixels; i++) {
         unsigned rgb         = ((const uint16_t *)src)[i];
         ((uint16_t *)dst)[i] = (rgb >> 11) | ((rgb & 0x7C0) >> 1) | ((rgb & 0x1F) << 10);
     }
 }

 void rgb15tobgr32(const uint8_t *src, uint8_t *dst, int src_size)
 {
     uint8_t *d          = dst;
     const uint16_t *s   = (const uint16_t *)src;
     const uint16_t *end = s + src_size / 2;

     while (s < end) {
         register uint16_t bgr = *s++;
 #if HAVE_BIGENDIAN
         *d++ = 255;
         *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
         *d++ = ((bgr&0x03E0)>>2) | ((bgr&0x03E0)>> 7);
         *d++ = ((bgr&0x7C00)>>7) | ((bgr&0x7C00)>>12);
 #else
         *d++ = ((bgr&0x7C00)>>7) | ((bgr&0x7C00)>>12);
         *d++ = ((bgr&0x03E0)>>2) | ((bgr&0x03E0)>> 7);
         *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
         *d++ = 255;
 #endif
     }
 }

 void rgb15to24(const uint8_t *src, uint8_t *dst, int src_size)
 {
     uint8_t *d          = dst;
     const uint16_t *s   = (const uint16_t *)src;
     const uint16_t *end = s + src_size / 2;

     while (s < end) {
         register uint16_t bgr = *s++;
         *d++ = ((bgr&0x7C00)>>7) | ((bgr&0x7C00)>>12);
         *d++ = ((bgr&0x03E0)>>2) | ((bgr&0x03E0)>> 7);
         *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
     }
 }

 void rgb15tobgr16(const uint8_t *src, uint8_t *dst, int src_size)
 {
     int i, num_pixels = src_size >> 1;

     for (i = 0; i < num_pixels; i++) {
         unsigned rgb         = ((const uint16_t *)src)[i];
         ((uint16_t *)dst)[i] = ((rgb & 0x7C00) >> 10) | ((rgb & 0x3E0) << 1) | (rgb << 11);
     }
 }

 void rgb15tobgr15(const uint8_t *src, uint8_t *dst, int src_size)
 {
     int i, num_pixels = src_size >> 1;

     for (i = 0; i < num_pixels; i++) {
         unsigned rgb         = ((const uint16_t *)src)[i];
         unsigned br          = rgb & 0x7C1F;
         ((uint16_t *)dst)[i] = (br >> 10) | (rgb & 0x3E0) | (br << 10);
     }
 }

 void rgb12tobgr12(const uint8_t *src, uint8_t *dst, int src_size)
 {
     uint16_t *d = (uint16_t *)dst;
     uint16_t *s = (uint16_t *)src;
     int i, num_pixels = src_size >> 1;

     for (i = 0; i < num_pixels; i++) {
         unsigned rgb = s[i];
         d[i]         = (rgb << 8 | rgb & 0xF0 | rgb >> 8) & 0xFFF;
     }
 }


 #define DEFINE_SHUFFLE_BYTES(a, b, c, d)                                \
 void shuffle_bytes_ ## a ## b ## c ## d(const uint8_t *src,             \
                                         uint8_t *dst, int src_size)     \
 {                                                                       \
     int i;                                                              \
                                                                         \
     for (i = 0; i < src_size; i += 4) {                                 \
         dst[i + 0] = src[i + a];                                        \
         dst[i + 1] = src[i + b];                                        \
         dst[i + 2] = src[i + c];                                        \
         dst[i + 3] = src[i + d];                                        \
     }                                                                   \
 }

 DEFINE_SHUFFLE_BYTES(1, 2, 3, 0)
 DEFINE_SHUFFLE_BYTES(3, 0, 1, 2)
 DEFINE_SHUFFLE_BYTES(3, 2, 1, 0)

 #define DEFINE_RGB48TOBGR48(need_bswap, swap)                           \
 void rgb48tobgr48_ ## need_bswap(const uint8_t *src,                    \
                                  uint8_t *dst, int src_size)            \
 {                                                                       \
     uint16_t *d = (uint16_t *)dst;                                      \
     uint16_t *s = (uint16_t *)src;                                      \
     int i, num_pixels = src_size >> 1;                                  \
                                                                         \
     for (i = 0; i < num_pixels; i += 3) {                               \
         d[i    ] = swap ? av_bswap16(s[i + 2]) : s[i + 2];              \
         d[i + 1] = swap ? av_bswap16(s[i + 1]) : s[i + 1];              \
         d[i + 2] = swap ? av_bswap16(s[i    ]) : s[i    ];              \
     }                                                                   \
 }

 DEFINE_RGB48TOBGR48(nobswap, 0)
 DEFINE_RGB48TOBGR48(bswap, 1)

 #define DEFINE_RGB64TOBGR48(need_bswap, swap)                           \
 void rgb64tobgr48_ ## need_bswap(const uint8_t *src,                    \
                                  uint8_t *dst, int src_size)            \
 {                                                                       \
     uint16_t *d = (uint16_t *)dst;                                      \
     uint16_t *s = (uint16_t *)src;                                      \
     int i, num_pixels = src_size >> 3;                                  \
                                                                         \
     for (i = 0; i < num_pixels; i++) {                                  \
         d[3 * i    ] = swap ? av_bswap16(s[4 * i + 2]) : s[4 * i + 2];  \
         d[3 * i + 1] = swap ? av_bswap16(s[4 * i + 1]) : s[4 * i + 1];  \
         d[3 * i + 2] = swap ? av_bswap16(s[4 * i    ]) : s[4 * i    ];  \
     }                                                                   \
 }

 DEFINE_RGB64TOBGR48(nobswap, 0)
 DEFINE_RGB64TOBGR48(bswap, 1)

 #define DEFINE_RGB64TO48(need_bswap, swap)                              \
 void rgb64to48_ ## need_bswap(const uint8_t *src,                       \
                               uint8_t *dst, int src_size)               \
 {                                                                       \
     uint16_t *d = (uint16_t *)dst;                                      \
     uint16_t *s = (uint16_t *)src;                                      \
     int i, num_pixels = src_size >> 3;                                  \
                                                                         \
     for (i = 0; i < num_pixels; i++) {                                  \
         d[3 * i    ] = swap ? av_bswap16(s[4 * i    ]) : s[4 * i    ];  \
         d[3 * i + 1] = swap ? av_bswap16(s[4 * i + 1]) : s[4 * i + 1];  \
         d[3 * i + 2] = swap ? av_bswap16(s[4 * i + 2]) : s[4 * i + 2];  \
     }                                                                   \
 }

 DEFINE_RGB64TO48(nobswap, 0)
 DEFINE_RGB64TO48(bswap, 1)
	/*
	* software RGB to RGB converter
	* pluralize by software PAL8 to RGB converter
	* software YUV to YUV converter
	* software YUV to RGB converter
	* Written by Nick Kurshev.
	* palette & YUV & runtime CPU stuff by Michael (michaelni@gmx.at)
	*
	* This file is part of FFmpeg.
	*
	* FFmpeg is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2.1 of the License, or (at your option) any later version.
	*
	* FFmpeg is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public
	* License along with FFmpeg; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	*/

	#include <inttypes.h>

	#include "libavutil/attributes.h"
	#include "libavutil/bswap.h"
	#include "config.h"
	#include "rgb2rgb.h"
	#include "swscale.h"
	#include "swscale_internal.h"

	void (rgb32tobgr24)(const uint8_t src, uint8_t *dst, int src_size);
	void (rgb32tobgr16)(const uint8_t src, uint8_t *dst, int src_size);
	void (rgb32tobgr15)(const uint8_t src, uint8_t *dst, int src_size);
	void (rgb24tobgr32)(const uint8_t src, uint8_t *dst, int src_size);
	void (rgb24tobgr24)(const uint8_t src, uint8_t *dst, int src_size);
	void (rgb24tobgr16)(const uint8_t src, uint8_t *dst, int src_size);
	void (rgb24tobgr15)(const uint8_t src, uint8_t *dst, int src_size);
	void (rgb16tobgr24)(const uint8_t src, uint8_t *dst, int src_size);
	void (rgb15tobgr24)(const uint8_t src, uint8_t *dst, int src_size);

	void (rgb32to16)(const uint8_t src, uint8_t *dst, int src_size);
	void (rgb32to15)(const uint8_t src, uint8_t *dst, int src_size);
	void (rgb24to16)(const uint8_t src, uint8_t *dst, int src_size);
	void (rgb24to15)(const uint8_t src, uint8_t *dst, int src_size);
	void (rgb16to32)(const uint8_t src, uint8_t *dst, int src_size);
	void (rgb16to15)(const uint8_t src, uint8_t *dst, int src_size);
	void (rgb15to16)(const uint8_t src, uint8_t *dst, int src_size);
	void (rgb15to32)(const uint8_t src, uint8_t *dst, int src_size);

	void (shuffle_bytes_0321)(const uint8_t src, uint8_t *dst, int src_size);
	void (shuffle_bytes_2103)(const uint8_t src, uint8_t *dst, int src_size);

	void (yv12toyuy2)(const uint8_t ysrc, const uint8_t *usrc,
	const uint8_t vsrc, uint8_t dst,
	int width, int height,
	int lumStride, int chromStride, int dstStride);
	void (yv12touyvy)(const uint8_t ysrc, const uint8_t *usrc,
	const uint8_t vsrc, uint8_t dst,
	int width, int height,
	int lumStride, int chromStride, int dstStride);
	void (yuv422ptoyuy2)(const uint8_t ysrc, const uint8_t *usrc,
	const uint8_t vsrc, uint8_t dst,
	int width, int height,
	int lumStride, int chromStride, int dstStride);
	void (yuv422ptouyvy)(const uint8_t ysrc, const uint8_t *usrc,
	const uint8_t vsrc, uint8_t dst,
	int width, int height,
	int lumStride, int chromStride, int dstStride);
	void (yuy2toyv12)(const uint8_t src, uint8_t *ydst,
	uint8_t udst, uint8_t vdst,
	int width, int height,
	int lumStride, int chromStride, int srcStride);
	void (ff_rgb24toyv12)(const uint8_t src, uint8_t *ydst,
	uint8_t udst, uint8_t vdst,
	int width, int height,
	int lumStride, int chromStride, int srcStride,
	int32_t *rgb2yuv);
	void (planar2x)(const uint8_t src, uint8_t *dst, int width, int height,
	int srcStride, int dstStride);
	void (interleaveBytes)(const uint8_t src1, const uint8_t src2, uint8_t dst,
	int width, int height, int src1Stride,
	int src2Stride, int dstStride);
	void (deinterleaveBytes)(const uint8_t src, uint8_t dst1, uint8_t dst2,
	int width, int height, int srcStride,
	int dst1Stride, int dst2Stride);
	void (vu9_to_vu12)(const uint8_t src1, const uint8_t *src2,
	uint8_t dst1, uint8_t dst2,
	int width, int height,
	int srcStride1, int srcStride2,
	int dstStride1, int dstStride2);
	void (yvu9_to_yuy2)(const uint8_t src1, const uint8_t *src2,
	const uint8_t src3, uint8_t dst,
	int width, int height,
	int srcStride1, int srcStride2,
	int srcStride3, int dstStride);
	void (uyvytoyuv420)(uint8_t ydst, uint8_t udst, uint8_t vdst,
	const uint8_t *src, int width, int height,
	int lumStride, int chromStride, int srcStride);
	void (uyvytoyuv422)(uint8_t ydst, uint8_t udst, uint8_t vdst,
	const uint8_t *src, int width, int height,
	int lumStride, int chromStride, int srcStride);
	void (yuyvtoyuv420)(uint8_t ydst, uint8_t udst, uint8_t vdst,
	const uint8_t *src, int width, int height,
	int lumStride, int chromStride, int srcStride);
	void (yuyvtoyuv422)(uint8_t ydst, uint8_t udst, uint8_t vdst,
	const uint8_t *src, int width, int height,
	int lumStride, int chromStride, int srcStride);

	#define BY ((int)( 0.098 * (1 << RGB2YUV_SHIFT) + 0.5))
	#define BV ((int)(-0.071 * (1 << RGB2YUV_SHIFT) + 0.5))
	#define BU ((int)( 0.439 * (1 << RGB2YUV_SHIFT) + 0.5))
	#define GY ((int)( 0.504 * (1 << RGB2YUV_SHIFT) + 0.5))
	#define GV ((int)(-0.368 * (1 << RGB2YUV_SHIFT) + 0.5))
	#define GU ((int)(-0.291 * (1 << RGB2YUV_SHIFT) + 0.5))
	#define RY ((int)( 0.257 * (1 << RGB2YUV_SHIFT) + 0.5))
	#define RV ((int)( 0.439 * (1 << RGB2YUV_SHIFT) + 0.5))
	#define RU ((int)(-0.148 * (1 << RGB2YUV_SHIFT) + 0.5))

	//plain C versions
	#include "rgb2rgb_template.c"

	/*
	* RGB15->RGB16 original by Strepto/Astral
	* ported to gcc & bugfixed : A'rpi
	* MMXEXT, 3DNOW optimization by Nick Kurshev
	* 32-bit C version, and and&add trick by Michael Niedermayer
	*/

	av_cold void ff_sws_rgb2rgb_init(void)
	{
	rgb2rgb_init_c();
	if (ARCH_X86)
	rgb2rgb_init_x86();
	}

	void rgb32to24(const uint8_t src, uint8_t dst, int src_size)
	{
	int i, num_pixels = src_size >> 2;

	for (i = 0; i < num_pixels; i++) {
	#if HAVE_BIGENDIAN
	/* RGB32 (= A,B,G,R) -> BGR24 (= B,G,R) */
	dst[3 * i + 0] = src[4 * i + 1];
	dst[3 * i + 1] = src[4 * i + 2];
	dst[3 * i + 2] = src[4 * i + 3];
	#else
	dst[3 * i + 0] = src[4 * i + 2];
	dst[3 * i + 1] = src[4 * i + 1];
	dst[3 * i + 2] = src[4 * i + 0];
	#endif
	}
	}

	void rgb24to32(const uint8_t src, uint8_t dst, int src_size)
	{
	int i;

	for (i = 0; 3 * i < src_size; i++) {
	#if HAVE_BIGENDIAN
	/* RGB24 (= R, G, B) -> BGR32 (= A, R, G, B) */
	dst[4 * i + 0] = 255;
	dst[4 * i + 1] = src[3 * i + 0];
	dst[4 * i + 2] = src[3 * i + 1];
	dst[4 * i + 3] = src[3 * i + 2];
	#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] = 255;
	#endif
	}
	}

	void rgb16tobgr32(const uint8_t src, uint8_t dst, int src_size)
	{
	uint8_t *d = dst;
	const uint16_t s = (const uint16_t )src;
	const uint16_t *end = s + src_size / 2;

	while (s < end) {
	register uint16_t bgr = *s++;
	#if HAVE_BIGENDIAN
	*d++ = 255;
	*d++ = ((bgr&0x001F)<<3) \| ((bgr&0x001F)>> 2);
	*d++ = ((bgr&0x07E0)>>3) \| ((bgr&0x07E0)>> 9);
	*d++ = ((bgr&0xF800)>>8) \| ((bgr&0xF800)>>13);
	#else
	*d++ = ((bgr&0xF800)>>8) \| ((bgr&0xF800)>>13);
	*d++ = ((bgr&0x07E0)>>3) \| ((bgr&0x07E0)>> 9);
	*d++ = ((bgr&0x001F)<<3) \| ((bgr&0x001F)>> 2);
	*d++ = 255;
	#endif
	}
	}

	void rgb12to15(const uint8_t src, uint8_t dst, int src_size)
	{
	uint16_t rgb, r, g, b;
	uint16_t d = (uint16_t )dst;
	const uint16_t s = (const uint16_t )src;
	const uint16_t *end = s + src_size / 2;

	while (s < end) {
	rgb = *s++;
	r = rgb & 0xF00;
	g = rgb & 0x0F0;
	b = rgb & 0x00F;
	r = (r << 3) \| ((r & 0x800) >> 1);
	g = (g << 2) \| ((g & 0x080) >> 2);
	b = (b << 1) \| ( b >> 3);
	*d++ = r \| g \| b;
	}
	}

	void rgb16to24(const uint8_t src, uint8_t dst, int src_size)
	{
	uint8_t *d = dst;
	const uint16_t s = (const uint16_t )src;
	const uint16_t *end = s + src_size / 2;

	while (s < end) {
	register uint16_t bgr = *s++;
	*d++ = ((bgr&0xF800)>>8) \| ((bgr&0xF800)>>13);
	*d++ = ((bgr&0x07E0)>>3) \| ((bgr&0x07E0)>> 9);
	*d++ = ((bgr&0x001F)<<3) \| ((bgr&0x001F)>> 2);
	}
	}

	void rgb16tobgr16(const uint8_t src, uint8_t dst, int src_size)
	{
	int i, num_pixels = src_size >> 1;

	for (i = 0; i < num_pixels; i++) {
	unsigned rgb = ((const uint16_t *)src)[i];
	((uint16_t *)dst)[i] = (rgb >> 11) \| (rgb & 0x7E0) \| (rgb << 11);
	}
	}

	void rgb16tobgr15(const uint8_t src, uint8_t dst, int src_size)
	{
	int i, num_pixels = src_size >> 1;

	for (i = 0; i < num_pixels; i++) {
	unsigned rgb = ((const uint16_t *)src)[i];
	((uint16_t *)dst)[i] = (rgb >> 11) \| ((rgb & 0x7C0) >> 1) \| ((rgb & 0x1F) << 10);
	}
	}

	void rgb15tobgr32(const uint8_t src, uint8_t dst, int src_size)
	{
	uint8_t *d = dst;
	const uint16_t s = (const uint16_t )src;
	const uint16_t *end = s + src_size / 2;

	while (s < end) {
	register uint16_t bgr = *s++;
	#if HAVE_BIGENDIAN
	*d++ = 255;
	*d++ = ((bgr&0x001F)<<3) \| ((bgr&0x001F)>> 2);
	*d++ = ((bgr&0x03E0)>>2) \| ((bgr&0x03E0)>> 7);
	*d++ = ((bgr&0x7C00)>>7) \| ((bgr&0x7C00)>>12);
	#else
	*d++ = ((bgr&0x7C00)>>7) \| ((bgr&0x7C00)>>12);
	*d++ = ((bgr&0x03E0)>>2) \| ((bgr&0x03E0)>> 7);
	*d++ = ((bgr&0x001F)<<3) \| ((bgr&0x001F)>> 2);
	*d++ = 255;
	#endif
	}
	}

	void rgb15to24(const uint8_t src, uint8_t dst, int src_size)
	{
	uint8_t *d = dst;
	const uint16_t s = (const uint16_t )src;
	const uint16_t *end = s + src_size / 2;

	while (s < end) {
	register uint16_t bgr = *s++;
	*d++ = ((bgr&0x7C00)>>7) \| ((bgr&0x7C00)>>12);
	*d++ = ((bgr&0x03E0)>>2) \| ((bgr&0x03E0)>> 7);
	*d++ = ((bgr&0x001F)<<3) \| ((bgr&0x001F)>> 2);
	}
	}

	void rgb15tobgr16(const uint8_t src, uint8_t dst, int src_size)
	{
	int i, num_pixels = src_size >> 1;

	for (i = 0; i < num_pixels; i++) {
	unsigned rgb = ((const uint16_t *)src)[i];
	((uint16_t *)dst)[i] = ((rgb & 0x7C00) >> 10) \| ((rgb & 0x3E0) << 1) \| (rgb << 11);
	}
	}

	void rgb15tobgr15(const uint8_t src, uint8_t dst, int src_size)
	{
	int i, num_pixels = src_size >> 1;

	for (i = 0; i < num_pixels; i++) {
	unsigned rgb = ((const uint16_t *)src)[i];
	unsigned br = rgb & 0x7C1F;
	((uint16_t *)dst)[i] = (br >> 10) \| (rgb & 0x3E0) \| (br << 10);
	}
	}

	void rgb12tobgr12(const uint8_t src, uint8_t dst, int src_size)
	{
	uint16_t d = (uint16_t )dst;
	uint16_t s = (uint16_t )src;
	int i, num_pixels = src_size >> 1;

	for (i = 0; i < num_pixels; i++) {
	unsigned rgb = s[i];
	d[i] = (rgb << 8 \| rgb & 0xF0 \| rgb >> 8) & 0xFFF;
	}
	}


	#define DEFINE_SHUFFLE_BYTES(a, b, c, d) \
	void shuffle_bytes_ ## a ## b ## c ## d(const uint8_t *src, \
	uint8_t *dst, int src_size) \
	{ \
	int i; \
	\
	for (i = 0; i < src_size; i += 4) { \
	dst[i + 0] = src[i + a]; \
	dst[i + 1] = src[i + b]; \
	dst[i + 2] = src[i + c]; \
	dst[i + 3] = src[i + d]; \
	} \
	}

	DEFINE_SHUFFLE_BYTES(1, 2, 3, 0)
	DEFINE_SHUFFLE_BYTES(3, 0, 1, 2)
	DEFINE_SHUFFLE_BYTES(3, 2, 1, 0)

	#define DEFINE_RGB48TOBGR48(need_bswap, swap) \
	void rgb48tobgr48_ ## need_bswap(const uint8_t *src, \
	uint8_t *dst, int src_size) \
	{ \
	uint16_t d = (uint16_t )dst; \
	uint16_t s = (uint16_t )src; \
	int i, num_pixels = src_size >> 1; \
	\
	for (i = 0; i < num_pixels; i += 3) { \
	d[i ] = swap ? av_bswap16(s[i + 2]) : s[i + 2]; \
	d[i + 1] = swap ? av_bswap16(s[i + 1]) : s[i + 1]; \
	d[i + 2] = swap ? av_bswap16(s[i ]) : s[i ]; \
	} \
	}

	DEFINE_RGB48TOBGR48(nobswap, 0)
	DEFINE_RGB48TOBGR48(bswap, 1)

	#define DEFINE_RGB64TOBGR48(need_bswap, swap) \
	void rgb64tobgr48_ ## need_bswap(const uint8_t *src, \
	uint8_t *dst, int src_size) \
	{ \
	uint16_t d = (uint16_t )dst; \
	uint16_t s = (uint16_t )src; \
	int i, num_pixels = src_size >> 3; \
	\
	for (i = 0; i < num_pixels; i++) { \
	d[3 * i ] = swap ? av_bswap16(s[4 * i + 2]) : s[4 * i + 2]; \
	d[3 * i + 1] = swap ? av_bswap16(s[4 * i + 1]) : s[4 * i + 1]; \
	d[3 * i + 2] = swap ? av_bswap16(s[4 * i ]) : s[4 * i ]; \
	} \
	}

	DEFINE_RGB64TOBGR48(nobswap, 0)
	DEFINE_RGB64TOBGR48(bswap, 1)

	#define DEFINE_RGB64TO48(need_bswap, swap) \
	void rgb64to48_ ## need_bswap(const uint8_t *src, \
	uint8_t *dst, int src_size) \
	{ \
	uint16_t d = (uint16_t )dst; \
	uint16_t s = (uint16_t )src; \
	int i, num_pixels = src_size >> 3; \
	\
	for (i = 0; i < num_pixels; i++) { \
	d[3 * i ] = swap ? av_bswap16(s[4 * i ]) : s[4 * i ]; \
	d[3 * i + 1] = swap ? av_bswap16(s[4 * i + 1]) : s[4 * i + 1]; \
	d[3 * i + 2] = swap ? av_bswap16(s[4 * i + 2]) : s[4 * i + 2]; \
	} \
	}

	DEFINE_RGB64TO48(nobswap, 0)
	DEFINE_RGB64TO48(bswap, 1)