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ffmpeg / libswscale / rgb2rgb.c @ db46be01

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1 fcfbc150 Michael Niedermayer
/*
2 8a322796 Diego Biurrun
 * software RGB to RGB converter
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 * pluralize by software PAL8 to RGB converter
4
 *              software YUV to YUV converter
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 *              software YUV to RGB converter
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 * Written by Nick Kurshev.
7
 * palette & YUV & runtime CPU stuff by Michael (michaelni@gmx.at)
8 4fadc2b4 Diego Biurrun
 *
9 2912e87a Mans Rullgard
 * This file is part of Libav.
10 d026b45e Diego Biurrun
 *
11 2912e87a Mans Rullgard
 * Libav is free software; you can redistribute it and/or
12 819ee683 Diego Biurrun
 * modify it under the terms of the GNU Lesser General Public
13
 * License as published by the Free Software Foundation; either
14
 * version 2.1 of the License, or (at your option) any later version.
15 4fadc2b4 Diego Biurrun
 *
16 2912e87a Mans Rullgard
 * Libav is distributed in the hope that it will be useful,
17 4fadc2b4 Diego Biurrun
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 819ee683 Diego Biurrun
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
19
 * Lesser General Public License for more details.
20 4fadc2b4 Diego Biurrun
 *
21 819ee683 Diego Biurrun
 * You should have received a copy of the GNU Lesser General Public
22 2912e87a Mans Rullgard
 * License along with Libav; if not, write to the Free Software
23 b19bcbaa Diego Biurrun
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 a3aece93 Nick Kurshev
 */
25 b234ae81 Nick Kurshev
#include <inttypes.h>
26 b2d374c9 Diego Biurrun
#include "config.h"
27 83da2c6f Diego Biurrun
#include "libavutil/x86_cpu.h"
28
#include "libavutil/bswap.h"
29 b234ae81 Nick Kurshev
#include "rgb2rgb.h"
30 700490a4 Michael Niedermayer
#include "swscale.h"
31 94c4def2 Luca Abeni
#include "swscale_internal.h"
32 a3aece93 Nick Kurshev
33 8a322796 Diego Biurrun
#define FAST_BGR2YV12 // use 7-bit instead of 15-bit coefficients
34 21316f3c Michael Niedermayer
35 6107059c Michael Niedermayer
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);
38
void (*rgb32tobgr24)(const uint8_t *src, uint8_t *dst, long src_size);
39 30c48a0a Benoit Fouet
void (*rgb32to16)(const uint8_t *src, uint8_t *dst, long src_size);
40
void (*rgb32to15)(const uint8_t *src, uint8_t *dst, long src_size);
41
void (*rgb15to16)(const uint8_t *src, uint8_t *dst, long src_size);
42 6107059c Michael Niedermayer
void (*rgb15tobgr24)(const uint8_t *src, uint8_t *dst, long src_size);
43 30c48a0a Benoit Fouet
void (*rgb15to32)(const uint8_t *src, uint8_t *dst, long src_size);
44
void (*rgb16to15)(const uint8_t *src, uint8_t *dst, long src_size);
45 6107059c Michael Niedermayer
void (*rgb16tobgr24)(const uint8_t *src, uint8_t *dst, long src_size);
46 30c48a0a Benoit Fouet
void (*rgb16to32)(const uint8_t *src, uint8_t *dst, long src_size);
47 7f526efd Reimar Döffinger
void (*rgb24tobgr24)(const uint8_t *src, uint8_t *dst, long src_size);
48 6107059c Michael Niedermayer
void (*rgb24to16)(const uint8_t *src, uint8_t *dst, long src_size);
49
void (*rgb24to15)(const uint8_t *src, uint8_t *dst, long src_size);
50 a51125b5 Ramiro Polla
void (*shuffle_bytes_2103)(const uint8_t *src, uint8_t *dst, long src_size);
51 7f526efd Reimar Döffinger
void (*rgb32tobgr16)(const uint8_t *src, uint8_t *dst, long src_size);
52
void (*rgb32tobgr15)(const uint8_t *src, uint8_t *dst, long src_size);
53 700490a4 Michael Niedermayer
54
void (*yv12toyuy2)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
55 6e42e6c4 Diego Biurrun
                   long width, long height,
56
                   long lumStride, long chromStride, long dstStride);
57 caeaabe7 Alex Beregszaszi
void (*yv12touyvy)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
58 6e42e6c4 Diego Biurrun
                   long width, long height,
59
                   long lumStride, long chromStride, long dstStride);
60 700490a4 Michael Niedermayer
void (*yuv422ptoyuy2)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
61 6e42e6c4 Diego Biurrun
                      long width, long height,
62
                      long lumStride, long chromStride, long dstStride);
63 a6100f39 Baptiste Coudurier
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);
66 700490a4 Michael Niedermayer
void (*yuy2toyv12)(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
67 6e42e6c4 Diego Biurrun
                   long width, long height,
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                   long lumStride, long chromStride, long srcStride);
69 700490a4 Michael Niedermayer
void (*rgb24toyv12)(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
70 6e42e6c4 Diego Biurrun
                    long width, long height,
71
                    long lumStride, long chromStride, long srcStride);
72 7f526efd Reimar Döffinger
void (*planar2x)(const uint8_t *src, uint8_t *dst, long width, long height,
73 6e42e6c4 Diego Biurrun
                 long srcStride, long dstStride);
74 a959e247 Zuxy Meng
void (*interleaveBytes)(const uint8_t *src1, const uint8_t *src2, uint8_t *dst,
75 6e42e6c4 Diego Biurrun
                        long width, long height, long src1Stride,
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                        long src2Stride, long dstStride);
77 700490a4 Michael Niedermayer
void (*vu9_to_vu12)(const uint8_t *src1, const uint8_t *src2,
78 6e42e6c4 Diego Biurrun
                    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);
82 700490a4 Michael Niedermayer
void (*yvu9_to_yuy2)(const uint8_t *src1, const uint8_t *src2, const uint8_t *src3,
83 6e42e6c4 Diego Biurrun
                     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);
87 0411072e Michael Niedermayer
void (*uyvytoyuv420)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t *src,
88 9b734d44 Ramiro Polla
                     long width, long height,
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                     long lumStride, long chromStride, long srcStride);
90 0411072e Michael Niedermayer
void (*uyvytoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t *src,
91 9b734d44 Ramiro Polla
                     long width, long height,
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                     long lumStride, long chromStride, long srcStride);
93 0411072e Michael Niedermayer
void (*yuyvtoyuv420)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t *src,
94 9b734d44 Ramiro Polla
                     long width, long height,
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                     long lumStride, long chromStride, long srcStride);
96 0411072e Michael Niedermayer
void (*yuyvtoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t *src,
97 9b734d44 Ramiro Polla
                     long width, long height,
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                     long lumStride, long chromStride, long srcStride);
99 0411072e Michael Niedermayer
100 700490a4 Michael Niedermayer
101 819ee683 Diego Biurrun
#if ARCH_X86
102 6527e561 Ramiro Polla
DECLARE_ASM_CONST(8, uint64_t, mmx_ff)       = 0x00000000000000FFULL;
103 d334c7c2 Reimar Döffinger
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;
108 f8a138be Cédric Schieli
DECLARE_ASM_CONST(8, uint64_t, mask32a)      = 0xFF000000FF000000ULL;
109 d334c7c2 Reimar Döffinger
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;
128 0d9f3d85 Arpi
#define mask16b mask15b
129 d334c7c2 Reimar Döffinger
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;
137 b63f641e Aurelien Jacobs
#endif /* ARCH_X86 */
138 79811694 Nick Kurshev
139 1de97d84 Michael Niedermayer
#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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150 8a322796 Diego Biurrun
//Note: We have C, MMX, MMX2, 3DNOW versions, there is no 3DNOW + MMX2 one.
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//plain C versions
152 c12f7b2d Ramiro Polla
#define COMPILE_TEMPLATE_MMX 0
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#define COMPILE_TEMPLATE_MMX2 0
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#define COMPILE_TEMPLATE_AMD3DNOW 0
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#define COMPILE_TEMPLATE_SSE2 0
156 1de97d84 Michael Niedermayer
#define RENAME(a) a ## _C
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#include "rgb2rgb_template.c"
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159 819ee683 Diego Biurrun
#if ARCH_X86
160 1de97d84 Michael Niedermayer
161
//MMX versions
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#undef RENAME
163 c12f7b2d Ramiro Polla
#undef COMPILE_TEMPLATE_MMX
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#define COMPILE_TEMPLATE_MMX 1
165 1de97d84 Michael Niedermayer
#define RENAME(a) a ## _MMX
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#include "rgb2rgb_template.c"
167
168
//MMX2 versions
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#undef RENAME
170 c12f7b2d Ramiro Polla
#undef COMPILE_TEMPLATE_MMX2
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#define COMPILE_TEMPLATE_MMX2 1
172 1de97d84 Michael Niedermayer
#define RENAME(a) a ## _MMX2
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#include "rgb2rgb_template.c"
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175 539ff40c Ramiro Polla
//SSE2 versions
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#undef RENAME
177 c12f7b2d Ramiro Polla
#undef COMPILE_TEMPLATE_SSE2
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#define COMPILE_TEMPLATE_SSE2 1
179 539ff40c Ramiro Polla
#define RENAME(a) a ## _SSE2
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#include "rgb2rgb_template.c"
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182 1de97d84 Michael Niedermayer
//3DNOW versions
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#undef RENAME
184 c12f7b2d Ramiro Polla
#undef COMPILE_TEMPLATE_MMX2
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#undef COMPILE_TEMPLATE_SSE2
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#undef COMPILE_TEMPLATE_AMD3DNOW
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#define COMPILE_TEMPLATE_MMX2 0
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#define COMPILE_TEMPLATE_SSE2 1
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#define COMPILE_TEMPLATE_AMD3DNOW 1
190 abdcd337 Michael Niedermayer
#define RENAME(a) a ## _3DNOW
191 1de97d84 Michael Niedermayer
#include "rgb2rgb_template.c"
192
193 6e1c66bc Aurelien Jacobs
#endif //ARCH_X86 || ARCH_X86_64
194 b238eb2e Nick Kurshev
195 a3aece93 Nick Kurshev
/*
196 8a322796 Diego Biurrun
 RGB15->RGB16 original by Strepto/Astral
197 a3aece93 Nick Kurshev
 ported to gcc & bugfixed : A'rpi
198 51da31f1 Nick Kurshev
 MMX2, 3DNOW optimization by Nick Kurshev
199 8a322796 Diego Biurrun
 32-bit C version, and and&add trick by Michael Niedermayer
200 a3aece93 Nick Kurshev
*/
201 fcfbc150 Michael Niedermayer
202 dd68318c Ramiro Polla
void sws_rgb2rgb_init(int flags)
203
{
204 819ee683 Diego Biurrun
#if HAVE_MMX2 || HAVE_AMD3DNOW || HAVE_MMX
205 539ff40c Ramiro Polla
    if (flags & SWS_CPU_CAPS_SSE2)
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        rgb2rgb_init_SSE2();
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    else if (flags & SWS_CPU_CAPS_MMX2)
208 6e42e6c4 Diego Biurrun
        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
214 f4406ec1 Diego Biurrun
#endif /* HAVE_MMX2 || HAVE_AMD3DNOW || HAVE_MMX */
215 6e42e6c4 Diego Biurrun
        rgb2rgb_init_C();
216 ac4d0aea Michael Niedermayer
}
217 700490a4 Michael Niedermayer
218 2b991422 Reinhard Tartler
#if LIBSWSCALE_VERSION_MAJOR < 1
219 522ce957 Vitor Sessak
void palette8topacked32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
220 fcfbc150 Michael Niedermayer
{
221 2b991422 Reinhard Tartler
    sws_convertPalette8ToPacked32(src, dst, num_pixels, palette);
222 6c1baeb0 Alex Beregszaszi
}
223
224 522ce957 Vitor Sessak
void palette8topacked24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
225 9ce6584e Michael Niedermayer
{
226 2b991422 Reinhard Tartler
    sws_convertPalette8ToPacked24(src, dst, num_pixels, palette);
227 6c1baeb0 Alex Beregszaszi
}
228
229 fcfbc150 Michael Niedermayer
/**
230 8a322796 Diego Biurrun
 * Palette is assumed to contain BGR16, see rgb32to16 to convert the palette.
231 fcfbc150 Michael Niedermayer
 */
232 7f526efd Reimar Döffinger
void palette8torgb16(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
233 fcfbc150 Michael Niedermayer
{
234 6e42e6c4 Diego Biurrun
    long i;
235
    for (i=0; i<num_pixels; i++)
236 774c386a Baptiste Coudurier
        ((uint16_t *)dst)[i] = ((const uint16_t *)palette)[src[i]];
237 fcfbc150 Michael Niedermayer
}
238 7f526efd Reimar Döffinger
void palette8tobgr16(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
239 6c1baeb0 Alex Beregszaszi
{
240 6e42e6c4 Diego Biurrun
    long i;
241
    for (i=0; i<num_pixels; i++)
242 6a01eab7 Måns Rullgård
        ((uint16_t *)dst)[i] = av_bswap16(((const uint16_t *)palette)[src[i]]);
243 6c1baeb0 Alex Beregszaszi
}
244 2b991422 Reinhard Tartler
#endif
245 fcfbc150 Michael Niedermayer
246 6107059c Michael Niedermayer
void rgb32to24(const uint8_t *src, uint8_t *dst, long src_size)
247 ac4d0aea Michael Niedermayer
{
248 6e42e6c4 Diego Biurrun
    long i;
249
    long num_pixels = src_size >> 2;
250 dd68318c Ramiro Polla
    for (i=0; i<num_pixels; i++) {
251 7d73d1c3 Ramiro Polla
#if HAVE_BIGENDIAN
252
        /* 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];
255
        dst[3*i + 2] = src[4*i + 3];
256
#else
257
        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];
260
#endif
261 6e42e6c4 Diego Biurrun
    }
262 ac4d0aea Michael Niedermayer
}
263
264 6107059c Michael Niedermayer
void rgb24to32(const uint8_t *src, uint8_t *dst, long src_size)
265 ac4d0aea Michael Niedermayer
{
266 6e42e6c4 Diego Biurrun
    long i;
267 dd68318c Ramiro Polla
    for (i=0; 3*i<src_size; i++) {
268 7d73d1c3 Ramiro Polla
#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];
274
#else
275
        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;
279
#endif
280 6e42e6c4 Diego Biurrun
    }
281 ac4d0aea Michael Niedermayer
}
282
283 7f526efd Reimar Döffinger
void rgb16tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
284 ac4d0aea Michael Niedermayer
{
285 6e42e6c4 Diego Biurrun
    const uint16_t *end;
286 72d6b610 Baptiste Coudurier
    uint8_t *d = dst;
287 774c386a Baptiste Coudurier
    const uint16_t *s = (const uint16_t *)src;
288 6e42e6c4 Diego Biurrun
    end = s + src_size/2;
289 dd68318c Ramiro Polla
    while (s < end) {
290 6e42e6c4 Diego Biurrun
        register uint16_t bgr;
291
        bgr = *s++;
292 7d73d1c3 Ramiro Polla
#if HAVE_BIGENDIAN
293
        *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;
297
#else
298
        *d++ = (bgr&0xF800)>>8;
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        *d++ = (bgr&0x7E0)>>3;
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        *d++ = (bgr&0x1F)<<3;
301
        *d++ = 255;
302
#endif
303 6e42e6c4 Diego Biurrun
    }
304 ac4d0aea Michael Niedermayer
}
305
306 6107059c Michael Niedermayer
void rgb16to24(const uint8_t *src, uint8_t *dst, long src_size)
307 ac4d0aea Michael Niedermayer
{
308 6e42e6c4 Diego Biurrun
    const uint16_t *end;
309 72d6b610 Baptiste Coudurier
    uint8_t *d = dst;
310 6e42e6c4 Diego Biurrun
    const uint16_t *s = (const uint16_t *)src;
311
    end = s + src_size/2;
312 dd68318c Ramiro Polla
    while (s < end) {
313 6e42e6c4 Diego Biurrun
        register uint16_t bgr;
314
        bgr = *s++;
315
        *d++ = (bgr&0xF800)>>8;
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        *d++ = (bgr&0x7E0)>>3;
317
        *d++ = (bgr&0x1F)<<3;
318
    }
319 ac4d0aea Michael Niedermayer
}
320
321 7f526efd Reimar Döffinger
void rgb16tobgr16(const uint8_t *src, uint8_t *dst, long src_size)
322 ac4d0aea Michael Niedermayer
{
323 6e42e6c4 Diego Biurrun
    long i;
324
    long num_pixels = src_size >> 1;
325
326 dd68318c Ramiro Polla
    for (i=0; i<num_pixels; i++) {
327 7372e9bb Michael Niedermayer
        unsigned rgb = ((const uint16_t*)src)[i];
328
        ((uint16_t*)dst)[i] = (rgb>>11) | (rgb&0x7E0) | (rgb<<11);
329 6e42e6c4 Diego Biurrun
    }
330 ac4d0aea Michael Niedermayer
}
331
332 7f526efd Reimar Döffinger
void rgb16tobgr15(const uint8_t *src, uint8_t *dst, long src_size)
333 ac4d0aea Michael Niedermayer
{
334 6e42e6c4 Diego Biurrun
    long i;
335
    long num_pixels = src_size >> 1;
336
337 dd68318c Ramiro Polla
    for (i=0; i<num_pixels; i++) {
338 7372e9bb Michael Niedermayer
        unsigned rgb = ((const uint16_t*)src)[i];
339
        ((uint16_t*)dst)[i] = (rgb>>11) | ((rgb&0x7C0)>>1) | ((rgb&0x1F)<<10);
340 6e42e6c4 Diego Biurrun
    }
341 ac4d0aea Michael Niedermayer
}
342
343 7f526efd Reimar Döffinger
void rgb15tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
344 ac4d0aea Michael Niedermayer
{
345 6e42e6c4 Diego Biurrun
    const uint16_t *end;
346 72d6b610 Baptiste Coudurier
    uint8_t *d = dst;
347 6e42e6c4 Diego Biurrun
    const uint16_t *s = (const uint16_t *)src;
348
    end = s + src_size/2;
349 dd68318c Ramiro Polla
    while (s < end) {
350 6e42e6c4 Diego Biurrun
        register uint16_t bgr;
351
        bgr = *s++;
352 7d73d1c3 Ramiro Polla
#if HAVE_BIGENDIAN
353
        *d++ = 255;
354
        *d++ = (bgr&0x1F)<<3;
355
        *d++ = (bgr&0x3E0)>>2;
356
        *d++ = (bgr&0x7C00)>>7;
357
#else
358
        *d++ = (bgr&0x7C00)>>7;
359
        *d++ = (bgr&0x3E0)>>2;
360
        *d++ = (bgr&0x1F)<<3;
361
        *d++ = 255;
362
#endif
363 6e42e6c4 Diego Biurrun
    }
364 ac4d0aea Michael Niedermayer
}
365
366 6107059c Michael Niedermayer
void rgb15to24(const uint8_t *src, uint8_t *dst, long src_size)
367 ac4d0aea Michael Niedermayer
{
368 6e42e6c4 Diego Biurrun
    const uint16_t *end;
369 72d6b610 Baptiste Coudurier
    uint8_t *d = dst;
370 774c386a Baptiste Coudurier
    const uint16_t *s = (const uint16_t *)src;
371 6e42e6c4 Diego Biurrun
    end = s + src_size/2;
372 dd68318c Ramiro Polla
    while (s < end) {
373 6e42e6c4 Diego Biurrun
        register uint16_t bgr;
374
        bgr = *s++;
375
        *d++ = (bgr&0x7C00)>>7;
376
        *d++ = (bgr&0x3E0)>>2;
377
        *d++ = (bgr&0x1F)<<3;
378
    }
379 ac4d0aea Michael Niedermayer
}
380
381 7f526efd Reimar Döffinger
void rgb15tobgr16(const uint8_t *src, uint8_t *dst, long src_size)
382 ac4d0aea Michael Niedermayer
{
383 6e42e6c4 Diego Biurrun
    long i;
384
    long num_pixels = src_size >> 1;
385
386 dd68318c Ramiro Polla
    for (i=0; i<num_pixels; i++) {
387 7372e9bb Michael Niedermayer
        unsigned rgb = ((const uint16_t*)src)[i];
388
        ((uint16_t*)dst)[i] = ((rgb&0x7C00)>>10) | ((rgb&0x3E0)<<1) | (rgb<<11);
389 6e42e6c4 Diego Biurrun
    }
390 ac4d0aea Michael Niedermayer
}
391
392 7f526efd Reimar Döffinger
void rgb15tobgr15(const uint8_t *src, uint8_t *dst, long src_size)
393 ac4d0aea Michael Niedermayer
{
394 6e42e6c4 Diego Biurrun
    long i;
395
    long num_pixels = src_size >> 1;
396
397 dd68318c Ramiro Polla
    for (i=0; i<num_pixels; i++) {
398 7372e9bb Michael Niedermayer
        unsigned br;
399
        unsigned rgb = ((const uint16_t*)src)[i];
400
        br = rgb&0x7c1F;
401
        ((uint16_t*)dst)[i] = (br>>10) | (rgb&0x3E0) | (br<<10);
402 6e42e6c4 Diego Biurrun
    }
403 ac4d0aea Michael Niedermayer
}
404
405 6107059c Michael Niedermayer
void bgr8torgb8(const uint8_t *src, uint8_t *dst, long src_size)
406 ac4d0aea Michael Niedermayer
{
407 6e42e6c4 Diego Biurrun
    long i;
408
    long num_pixels = src_size;
409 dd68318c Ramiro Polla
    for (i=0; i<num_pixels; i++) {
410 6e42e6c4 Diego Biurrun
        unsigned b,g,r;
411
        register uint8_t rgb;
412
        rgb = src[i];
413
        r = (rgb&0x07);
414
        g = (rgb&0x38)>>3;
415
        b = (rgb&0xC0)>>6;
416
        dst[i] = ((b<<1)&0x07) | ((g&0x07)<<3) | ((r&0x03)<<6);
417
    }
418 ac4d0aea Michael Niedermayer
}
419 82e5f86b Stefano Sabatini
420
#define DEFINE_SHUFFLE_BYTES(a, b, c, d)                                \
421
void shuffle_bytes_##a##b##c##d(const uint8_t *src, uint8_t *dst, long src_size) \
422
{                                                                       \
423
    long i;                                                             \
424
                                                                        \
425
    for (i = 0; i < src_size; i+=4) {                                   \
426
        dst[i + 0] = src[i + a];                                        \
427
        dst[i + 1] = src[i + b];                                        \
428
        dst[i + 2] = src[i + c];                                        \
429
        dst[i + 3] = src[i + d];                                        \
430
    }                                                                   \
431
}
432
433
DEFINE_SHUFFLE_BYTES(0, 3, 2, 1);
434
DEFINE_SHUFFLE_BYTES(1, 2, 3, 0);
435
DEFINE_SHUFFLE_BYTES(3, 0, 1, 2);
436
DEFINE_SHUFFLE_BYTES(3, 2, 1, 0);