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ffmpeg / libswscale / rgb2rgb.c @ 07cea6d1

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/*
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 * software RGB to RGB converter
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 * pluralize by software PAL8 to RGB converter
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 *              software YUV to YUV converter
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 *              software YUV to RGB converter
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 * Written by Nick Kurshev.
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 * palette & YUV & runtime CPU stuff by Michael (michaelni@gmx.at)
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 *
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 * The C code (not assembly, MMX, ...) of this file can be used
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 * under the LGPL license.
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 */
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#include <inttypes.h>
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#include "config.h"
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#include "libavutil/x86_cpu.h"
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#include "libavutil/bswap.h"
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#include "rgb2rgb.h"
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#include "swscale.h"
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#include "swscale_internal.h"
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#define FAST_BGR2YV12 // use 7-bit instead of 15-bit coefficients
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void (*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 (*rgb32tobgr32)(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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#if ARCH_X86 && CONFIG_GPL
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DECLARE_ASM_CONST(8, uint64_t, mmx_null)     = 0x0000000000000000ULL;
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DECLARE_ASM_CONST(8, uint64_t, mmx_one)      = 0xFFFFFFFFFFFFFFFFULL;
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DECLARE_ASM_CONST(8, uint64_t, mask32b)      = 0x000000FF000000FFULL;
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DECLARE_ASM_CONST(8, uint64_t, mask32g)      = 0x0000FF000000FF00ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask32r)      = 0x00FF000000FF0000ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask32a)      = 0xFF000000FF000000ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask32)       = 0x00FFFFFF00FFFFFFULL;
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DECLARE_ASM_CONST(8, uint64_t, mask3216br)   = 0x00F800F800F800F8ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask3216g)    = 0x0000FC000000FC00ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask3215g)    = 0x0000F8000000F800ULL;
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DECLARE_ASM_CONST(8, uint64_t, mul3216)      = 0x2000000420000004ULL;
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DECLARE_ASM_CONST(8, uint64_t, mul3215)      = 0x2000000820000008ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask24b)      = 0x00FF0000FF0000FFULL;
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DECLARE_ASM_CONST(8, uint64_t, mask24g)      = 0xFF0000FF0000FF00ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask24r)      = 0x0000FF0000FF0000ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask24l)      = 0x0000000000FFFFFFULL;
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DECLARE_ASM_CONST(8, uint64_t, mask24h)      = 0x0000FFFFFF000000ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask24hh)     = 0xffff000000000000ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask24hhh)    = 0xffffffff00000000ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask24hhhh)   = 0xffffffffffff0000ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask15b)      = 0x001F001F001F001FULL; /* 00000000 00011111  xxB */
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DECLARE_ASM_CONST(8, uint64_t, mask15rg)     = 0x7FE07FE07FE07FE0ULL; /* 01111111 11100000  RGx */
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DECLARE_ASM_CONST(8, uint64_t, mask15s)      = 0xFFE0FFE0FFE0FFE0ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask15g)      = 0x03E003E003E003E0ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask15r)      = 0x7C007C007C007C00ULL;
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#define mask16b mask15b
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DECLARE_ASM_CONST(8, uint64_t, mask16g)      = 0x07E007E007E007E0ULL;
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DECLARE_ASM_CONST(8, uint64_t, mask16r)      = 0xF800F800F800F800ULL;
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DECLARE_ASM_CONST(8, uint64_t, red_16mask)   = 0x0000f8000000f800ULL;
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DECLARE_ASM_CONST(8, uint64_t, green_16mask) = 0x000007e0000007e0ULL;
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DECLARE_ASM_CONST(8, uint64_t, blue_16mask)  = 0x0000001f0000001fULL;
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DECLARE_ASM_CONST(8, uint64_t, red_15mask)   = 0x00007c0000007c00ULL;
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DECLARE_ASM_CONST(8, uint64_t, green_15mask) = 0x000003e0000003e0ULL;
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DECLARE_ASM_CONST(8, uint64_t, blue_15mask)  = 0x0000001f0000001fULL;
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#endif /* ARCH_X86 */
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#define RGB2YUV_SHIFT 8
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#define BY ((int)( 0.098*(1<<RGB2YUV_SHIFT)+0.5))
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#define BV ((int)(-0.071*(1<<RGB2YUV_SHIFT)+0.5))
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#define BU ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
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#define GY ((int)( 0.504*(1<<RGB2YUV_SHIFT)+0.5))
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#define GV ((int)(-0.368*(1<<RGB2YUV_SHIFT)+0.5))
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#define GU ((int)(-0.291*(1<<RGB2YUV_SHIFT)+0.5))
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#define RY ((int)( 0.257*(1<<RGB2YUV_SHIFT)+0.5))
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#define RV ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
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#define RU ((int)(-0.148*(1<<RGB2YUV_SHIFT)+0.5))
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//Note: We have C, MMX, MMX2, 3DNOW versions, there is no 3DNOW + MMX2 one.
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//plain C versions
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#undef HAVE_MMX
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#undef HAVE_MMX2
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#undef HAVE_AMD3DNOW
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#undef HAVE_SSE2
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#define HAVE_MMX 0
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#define HAVE_MMX2 0
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#define HAVE_AMD3DNOW 0
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#define HAVE_SSE2 0
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#define RENAME(a) a ## _C
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#include "rgb2rgb_template.c"
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#if ARCH_X86 && CONFIG_GPL
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//MMX versions
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#undef RENAME
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#undef HAVE_MMX
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#define HAVE_MMX 1
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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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#undef HAVE_MMX2
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#define HAVE_MMX2 1
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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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#undef HAVE_MMX2
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#undef HAVE_AMD3DNOW
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#define HAVE_MMX2 0
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#define HAVE_AMD3DNOW 1
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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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 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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#if (HAVE_MMX2 || HAVE_AMD3DNOW || HAVE_MMX)  && 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 /* HAVE_MMX2 || HAVE_AMD3DNOW || HAVE_MMX */
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        rgb2rgb_init_C();
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}
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/**
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 * Convert the palette to the same packet 32-bit format as the palette
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 */
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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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    long i;
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    for (i=0; i<num_pixels; i++)
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        ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i]];
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}
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/**
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 * Palette format: ABCD -> dst format: ABC
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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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    long i;
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    for (i=0; i<num_pixels; i++) {
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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] = ((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] = bswap_16(((const 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] = ((const 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(((const uint16_t *)palette)[src[i]]);
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}
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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
306
    }
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}
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void rgb16tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
310
{
311
    const uint16_t *end;
312
    uint8_t *d = dst;
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    const uint16_t *s = (const uint16_t *)src;
314
    end = s + src_size/2;
315
    while (s < end) {
316
        register uint16_t bgr;
317
        bgr = *s++;
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#if HAVE_BIGENDIAN
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        *d++ = 255;
320
        *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;
328
#endif
329
    }
330
}
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void rgb16to24(const uint8_t *src, uint8_t *dst, long src_size)
333
{
334
    const uint16_t *end;
335
    uint8_t *d = dst;
336
    const uint16_t *s = (const uint16_t *)src;
337
    end = s + src_size/2;
338
    while (s < end) {
339
        register uint16_t bgr;
340
        bgr = *s++;
341
        *d++ = (bgr&0xF800)>>8;
342
        *d++ = (bgr&0x7E0)>>3;
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        *d++ = (bgr&0x1F)<<3;
344
    }
345
}
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void rgb16tobgr16(const uint8_t *src, uint8_t *dst, long src_size)
348
{
349
    long i;
350
    long num_pixels = src_size >> 1;
351

    
352
    for (i=0; i<num_pixels; i++) {
353
        unsigned rgb = ((const uint16_t*)src)[i];
354
        ((uint16_t*)dst)[i] = (rgb>>11) | (rgb&0x7E0) | (rgb<<11);
355
    }
356
}
357

    
358
void rgb16tobgr15(const uint8_t *src, uint8_t *dst, long src_size)
359
{
360
    long i;
361
    long num_pixels = src_size >> 1;
362

    
363
    for (i=0; i<num_pixels; i++) {
364
        unsigned rgb = ((const uint16_t*)src)[i];
365
        ((uint16_t*)dst)[i] = (rgb>>11) | ((rgb&0x7C0)>>1) | ((rgb&0x1F)<<10);
366
    }
367
}
368

    
369
void rgb15tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
370
{
371
    const uint16_t *end;
372
    uint8_t *d = dst;
373
    const uint16_t *s = (const uint16_t *)src;
374
    end = s + src_size/2;
375
    while (s < end) {
376
        register uint16_t bgr;
377
        bgr = *s++;
378
#if HAVE_BIGENDIAN
379
        *d++ = 255;
380
        *d++ = (bgr&0x1F)<<3;
381
        *d++ = (bgr&0x3E0)>>2;
382
        *d++ = (bgr&0x7C00)>>7;
383
#else
384
        *d++ = (bgr&0x7C00)>>7;
385
        *d++ = (bgr&0x3E0)>>2;
386
        *d++ = (bgr&0x1F)<<3;
387
        *d++ = 255;
388
#endif
389
    }
390
}
391

    
392
void rgb15to24(const uint8_t *src, uint8_t *dst, long src_size)
393
{
394
    const uint16_t *end;
395
    uint8_t *d = dst;
396
    const uint16_t *s = (const uint16_t *)src;
397
    end = s + src_size/2;
398
    while (s < end) {
399
        register uint16_t bgr;
400
        bgr = *s++;
401
        *d++ = (bgr&0x7C00)>>7;
402
        *d++ = (bgr&0x3E0)>>2;
403
        *d++ = (bgr&0x1F)<<3;
404
    }
405
}
406

    
407
void rgb15tobgr16(const uint8_t *src, uint8_t *dst, long src_size)
408
{
409
    long i;
410
    long num_pixels = src_size >> 1;
411

    
412
    for (i=0; i<num_pixels; i++) {
413
        unsigned rgb = ((const uint16_t*)src)[i];
414
        ((uint16_t*)dst)[i] = ((rgb&0x7C00)>>10) | ((rgb&0x3E0)<<1) | (rgb<<11);
415
    }
416
}
417

    
418
void rgb15tobgr15(const uint8_t *src, uint8_t *dst, long src_size)
419
{
420
    long i;
421
    long num_pixels = src_size >> 1;
422

    
423
    for (i=0; i<num_pixels; i++) {
424
        unsigned br;
425
        unsigned rgb = ((const uint16_t*)src)[i];
426
        br = rgb&0x7c1F;
427
        ((uint16_t*)dst)[i] = (br>>10) | (rgb&0x3E0) | (br<<10);
428
    }
429
}
430

    
431
void bgr8torgb8(const uint8_t *src, uint8_t *dst, long src_size)
432
{
433
    long i;
434
    long num_pixels = src_size;
435
    for (i=0; i<num_pixels; i++) {
436
        unsigned b,g,r;
437
        register uint8_t rgb;
438
        rgb = src[i];
439
        r = (rgb&0x07);
440
        g = (rgb&0x38)>>3;
441
        b = (rgb&0xC0)>>6;
442
        dst[i] = ((b<<1)&0x07) | ((g&0x07)<<3) | ((r&0x03)<<6);
443
    }
444
}
445

    
446
#define DEFINE_SHUFFLE_BYTES(a, b, c, d)                                \
447
void shuffle_bytes_##a##b##c##d(const uint8_t *src, uint8_t *dst, long src_size) \
448
{                                                                       \
449
    long i;                                                             \
450
                                                                        \
451
    for (i = 0; i < src_size; i+=4) {                                   \
452
        dst[i + 0] = src[i + a];                                        \
453
        dst[i + 1] = src[i + b];                                        \
454
        dst[i + 2] = src[i + c];                                        \
455
        dst[i + 3] = src[i + d];                                        \
456
    }                                                                   \
457
}
458

    
459
DEFINE_SHUFFLE_BYTES(0, 3, 2, 1);
460
DEFINE_SHUFFLE_BYTES(1, 2, 3, 0);
461
DEFINE_SHUFFLE_BYTES(2, 1, 0, 3);
462
DEFINE_SHUFFLE_BYTES(3, 0, 1, 2);
463
DEFINE_SHUFFLE_BYTES(3, 2, 1, 0);
464