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ffmpeg / libswscale / rgb2rgb.c @ 3d9408f4

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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
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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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 * 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 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 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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#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
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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
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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
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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)
225
{
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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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{
242
    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)
247
{
248
    long i;
249
    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)
254
{
255
    long i;
256
    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;
296
    while (s < end) {
297
        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
310
    }
311
}
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313
void rgb16to24(const uint8_t *src, uint8_t *dst, long src_size)
314
{
315
    const uint16_t *end;
316
    uint8_t *d = dst;
317
    const uint16_t *s = (const uint16_t *)src;
318
    end = s + src_size/2;
319
    while (s < end) {
320
        register uint16_t bgr;
321
        bgr = *s++;
322
        *d++ = (bgr&0xF800)>>8;
323
        *d++ = (bgr&0x7E0)>>3;
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        *d++ = (bgr&0x1F)<<3;
325
    }
326
}
327

    
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void rgb16tobgr16(const uint8_t *src, uint8_t *dst, long src_size)
329
{
330
    long i;
331
    long num_pixels = src_size >> 1;
332

    
333
    for (i=0; i<num_pixels; i++) {
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        unsigned rgb = ((const uint16_t*)src)[i];
335
        ((uint16_t*)dst)[i] = (rgb>>11) | (rgb&0x7E0) | (rgb<<11);
336
    }
337
}
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void rgb16tobgr15(const uint8_t *src, uint8_t *dst, long src_size)
340
{
341
    long i;
342
    long num_pixels = src_size >> 1;
343

    
344
    for (i=0; i<num_pixels; i++) {
345
        unsigned rgb = ((const uint16_t*)src)[i];
346
        ((uint16_t*)dst)[i] = (rgb>>11) | ((rgb&0x7C0)>>1) | ((rgb&0x1F)<<10);
347
    }
348
}
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350
void rgb15tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
351
{
352
    const uint16_t *end;
353
    uint8_t *d = dst;
354
    const uint16_t *s = (const uint16_t *)src;
355
    end = s + src_size/2;
356
    while (s < end) {
357
        register uint16_t bgr;
358
        bgr = *s++;
359
#if HAVE_BIGENDIAN
360
        *d++ = 255;
361
        *d++ = (bgr&0x1F)<<3;
362
        *d++ = (bgr&0x3E0)>>2;
363
        *d++ = (bgr&0x7C00)>>7;
364
#else
365
        *d++ = (bgr&0x7C00)>>7;
366
        *d++ = (bgr&0x3E0)>>2;
367
        *d++ = (bgr&0x1F)<<3;
368
        *d++ = 255;
369
#endif
370
    }
371
}
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373
void rgb15to24(const uint8_t *src, uint8_t *dst, long src_size)
374
{
375
    const uint16_t *end;
376
    uint8_t *d = dst;
377
    const uint16_t *s = (const uint16_t *)src;
378
    end = s + src_size/2;
379
    while (s < end) {
380
        register uint16_t bgr;
381
        bgr = *s++;
382
        *d++ = (bgr&0x7C00)>>7;
383
        *d++ = (bgr&0x3E0)>>2;
384
        *d++ = (bgr&0x1F)<<3;
385
    }
386
}
387

    
388
void rgb15tobgr16(const uint8_t *src, uint8_t *dst, long src_size)
389
{
390
    long i;
391
    long num_pixels = src_size >> 1;
392

    
393
    for (i=0; i<num_pixels; i++) {
394
        unsigned rgb = ((const uint16_t*)src)[i];
395
        ((uint16_t*)dst)[i] = ((rgb&0x7C00)>>10) | ((rgb&0x3E0)<<1) | (rgb<<11);
396
    }
397
}
398

    
399
void rgb15tobgr15(const uint8_t *src, uint8_t *dst, long src_size)
400
{
401
    long i;
402
    long num_pixels = src_size >> 1;
403

    
404
    for (i=0; i<num_pixels; i++) {
405
        unsigned br;
406
        unsigned rgb = ((const uint16_t*)src)[i];
407
        br = rgb&0x7c1F;
408
        ((uint16_t*)dst)[i] = (br>>10) | (rgb&0x3E0) | (br<<10);
409
    }
410
}
411

    
412
void bgr8torgb8(const uint8_t *src, uint8_t *dst, long src_size)
413
{
414
    long i;
415
    long num_pixels = src_size;
416
    for (i=0; i<num_pixels; i++) {
417
        unsigned b,g,r;
418
        register uint8_t rgb;
419
        rgb = src[i];
420
        r = (rgb&0x07);
421
        g = (rgb&0x38)>>3;
422
        b = (rgb&0xC0)>>6;
423
        dst[i] = ((b<<1)&0x07) | ((g&0x07)<<3) | ((r&0x03)<<6);
424
    }
425
}
426

    
427
#define DEFINE_SHUFFLE_BYTES(a, b, c, d)                                \
428
void shuffle_bytes_##a##b##c##d(const uint8_t *src, uint8_t *dst, long src_size) \
429
{                                                                       \
430
    long i;                                                             \
431
                                                                        \
432
    for (i = 0; i < src_size; i+=4) {                                   \
433
        dst[i + 0] = src[i + a];                                        \
434
        dst[i + 1] = src[i + b];                                        \
435
        dst[i + 2] = src[i + c];                                        \
436
        dst[i + 3] = src[i + d];                                        \
437
    }                                                                   \
438
}
439

    
440
DEFINE_SHUFFLE_BYTES(0, 3, 2, 1);
441
DEFINE_SHUFFLE_BYTES(1, 2, 3, 0);
442
DEFINE_SHUFFLE_BYTES(2, 1, 0, 3);
443
DEFINE_SHUFFLE_BYTES(3, 0, 1, 2);
444
DEFINE_SHUFFLE_BYTES(3, 2, 1, 0);
445