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yuv2rgb.c
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1 /*
2  * software YUV to RGB converter
3  *
4  * Copyright (C) 2009 Konstantin Shishkov
5  *
6  * MMX/MMXEXT template stuff (needed for fast movntq support),
7  * 1,4,8bpp support and context / deglobalize stuff
8  * by Michael Niedermayer (michaelni@gmx.at)
9  *
10  * This file is part of FFmpeg.
11  *
12  * FFmpeg is free software; you can redistribute it and/or
13  * modify it under the terms of the GNU Lesser General Public
14  * License as published by the Free Software Foundation; either
15  * version 2.1 of the License, or (at your option) any later version.
16  *
17  * FFmpeg is distributed in the hope that it will be useful,
18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20  * Lesser General Public License for more details.
21  *
22  * You should have received a copy of the GNU Lesser General Public
23  * License along with FFmpeg; if not, write to the Free Software
24  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25  */
26 
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <inttypes.h>
30 
31 #include "config.h"
32 #include "libswscale/rgb2rgb.h"
33 #include "libswscale/swscale.h"
35 #include "libavutil/attributes.h"
36 #include "libavutil/x86/asm.h"
37 #include "libavutil/x86/cpu.h"
38 #include "libavutil/cpu.h"
39 
40 #if HAVE_INLINE_ASM
41 
42 #define DITHER1XBPP // only for MMX
43 
44 /* hope these constant values are cache line aligned */
45 DECLARE_ASM_CONST(8, uint64_t, mmx_00ffw) = 0x00ff00ff00ff00ffULL;
46 DECLARE_ASM_CONST(8, uint64_t, mmx_redmask) = 0xf8f8f8f8f8f8f8f8ULL;
47 DECLARE_ASM_CONST(8, uint64_t, mmx_grnmask) = 0xfcfcfcfcfcfcfcfcULL;
48 DECLARE_ASM_CONST(8, uint64_t, pb_e0) = 0xe0e0e0e0e0e0e0e0ULL;
49 DECLARE_ASM_CONST(8, uint64_t, pb_03) = 0x0303030303030303ULL;
50 DECLARE_ASM_CONST(8, uint64_t, pb_07) = 0x0707070707070707ULL;
51 
52 //MMX versions
53 #if HAVE_MMX_INLINE && HAVE_6REGS
54 #undef RENAME
55 #undef COMPILE_TEMPLATE_MMXEXT
56 #define COMPILE_TEMPLATE_MMXEXT 0
57 #define RENAME(a) a ## _mmx
58 #include "yuv2rgb_template.c"
59 #endif /* HAVE_MMX_INLINE && HAVE_6REGS */
60 
61 // MMXEXT versions
62 #if HAVE_MMXEXT_INLINE && HAVE_6REGS
63 #undef RENAME
64 #undef COMPILE_TEMPLATE_MMXEXT
65 #define COMPILE_TEMPLATE_MMXEXT 1
66 #define RENAME(a) a ## _mmxext
67 #include "yuv2rgb_template.c"
68 #endif /* HAVE_MMXEXT_INLINE && HAVE_6REGS */
69 
70 #endif /* HAVE_INLINE_ASM */
71 
73 {
74 #if HAVE_MMX_INLINE && HAVE_6REGS
76 
77 #if HAVE_MMXEXT_INLINE
78  if (INLINE_MMXEXT(cpu_flags)) {
79  switch (c->dstFormat) {
80  case AV_PIX_FMT_RGB24:
81  return yuv420_rgb24_mmxext;
82  case AV_PIX_FMT_BGR24:
83  return yuv420_bgr24_mmxext;
84  }
85  }
86 #endif
87 
88  if (INLINE_MMX(cpu_flags)) {
89  switch (c->dstFormat) {
90  case AV_PIX_FMT_RGB32:
91  if (c->srcFormat == AV_PIX_FMT_YUVA420P) {
92 #if HAVE_7REGS && CONFIG_SWSCALE_ALPHA
93  return yuva420_rgb32_mmx;
94 #endif
95  break;
96  } else
97  return yuv420_rgb32_mmx;
98  case AV_PIX_FMT_BGR32:
99  if (c->srcFormat == AV_PIX_FMT_YUVA420P) {
100 #if HAVE_7REGS && CONFIG_SWSCALE_ALPHA
101  return yuva420_bgr32_mmx;
102 #endif
103  break;
104  } else
105  return yuv420_bgr32_mmx;
106  case AV_PIX_FMT_RGB24:
107  return yuv420_rgb24_mmx;
108  case AV_PIX_FMT_BGR24:
109  return yuv420_bgr24_mmx;
110  case AV_PIX_FMT_RGB565:
111  return yuv420_rgb16_mmx;
112  case AV_PIX_FMT_RGB555:
113  return yuv420_rgb15_mmx;
114  }
115  }
116 #endif /* HAVE_MMX_INLINE && HAVE_6REGS */
117 
118  return NULL;
119 }
#define NULL
Definition: coverity.c:32
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:64
av_cold SwsFunc ff_yuv2rgb_init_x86(SwsContext *c)
Definition: yuv2rgb.c:72
Macro definitions for various function/variable attributes.
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:102
#define av_cold
Definition: attributes.h:82
external API header
enum AVPixelFormat dstFormat
Destination pixel format.
#define INLINE_MMX(flags)
Definition: cpu.h:81
#define DECLARE_ASM_CONST(n, t, v)
Declare a static constant aligned variable appropriate for use in inline assembly code...
Definition: mem.h:102
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:65
#define AV_PIX_FMT_BGR32
Definition: pixfmt.h:328
static int cpu_flags
Definition: cpu.c:47
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:326
int(* SwsFunc)(struct SwsContext *context, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:88
#define INLINE_MMXEXT(flags)
Definition: cpu.h:82
enum AVPixelFormat srcFormat
Source pixel format.
#define AV_PIX_FMT_RGB555
Definition: pixfmt.h:339
static AVCodec * c
#define AV_PIX_FMT_RGB565
Definition: pixfmt.h:338