FFmpeg  4.4.5
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_X86ASM
41 
42 #define DITHER1XBPP // only for MMX
43 
44 //MMX versions
45 #if HAVE_MMX
46 #undef RENAME
47 #undef COMPILE_TEMPLATE_MMXEXT
48 #define COMPILE_TEMPLATE_MMXEXT 0
49 #define RENAME(a) a ## _mmx
50 #include "yuv2rgb_template.c"
51 #endif /* HAVE_MMX */
52 
53 // MMXEXT versions
54 #undef RENAME
55 #undef COMPILE_TEMPLATE_MMXEXT
56 #define COMPILE_TEMPLATE_MMXEXT 1
57 #define RENAME(a) a ## _mmxext
58 #include "yuv2rgb_template.c"
59 
60 //SSSE3 versions
61 #undef RENAME
62 #undef COMPILE_TEMPLATE_MMXEXT
63 #define COMPILE_TEMPLATE_MMXEXT 0
64 #define RENAME(a) a ## _ssse3
65 #include "yuv2rgb_template.c"
66 
67 #endif /* HAVE_X86ASM */
68 
70 {
71 #if HAVE_X86ASM
73 
75  switch (c->dstFormat) {
76  case AV_PIX_FMT_RGB32:
77  if (c->srcFormat == AV_PIX_FMT_YUVA420P) {
78 #if CONFIG_SWSCALE_ALPHA
79  return yuva420_rgb32_ssse3;
80 #endif
81  break;
82  } else
83  return yuv420_rgb32_ssse3;
84  case AV_PIX_FMT_BGR32:
85  if (c->srcFormat == AV_PIX_FMT_YUVA420P) {
86 #if CONFIG_SWSCALE_ALPHA
87  return yuva420_bgr32_ssse3;
88 #endif
89  break;
90  } else
91  return yuv420_bgr32_ssse3;
92  case AV_PIX_FMT_RGB24:
93  return yuv420_rgb24_ssse3;
94  case AV_PIX_FMT_BGR24:
95  return yuv420_bgr24_ssse3;
96  case AV_PIX_FMT_RGB565:
97  return yuv420_rgb16_ssse3;
98  case AV_PIX_FMT_RGB555:
99  return yuv420_rgb15_ssse3;
100  }
101  }
102 
103  if (EXTERNAL_MMXEXT(cpu_flags)) {
104  switch (c->dstFormat) {
105  case AV_PIX_FMT_RGB24:
106  return yuv420_rgb24_mmxext;
107  case AV_PIX_FMT_BGR24:
108  return yuv420_bgr24_mmxext;
109  }
110  }
111 
112  if (EXTERNAL_MMX(cpu_flags)) {
113  switch (c->dstFormat) {
114  case AV_PIX_FMT_RGB32:
115  if (c->srcFormat == AV_PIX_FMT_YUVA420P) {
116 #if CONFIG_SWSCALE_ALPHA
117  return yuva420_rgb32_mmx;
118 #endif
119  break;
120  } else
121  return yuv420_rgb32_mmx;
122  case AV_PIX_FMT_BGR32:
123  if (c->srcFormat == AV_PIX_FMT_YUVA420P) {
124 #if CONFIG_SWSCALE_ALPHA
125  return yuva420_bgr32_mmx;
126 #endif
127  break;
128  } else
129  return yuv420_bgr32_mmx;
130  case AV_PIX_FMT_RGB24:
131  return yuv420_rgb24_mmx;
132  case AV_PIX_FMT_BGR24:
133  return yuv420_bgr24_mmx;
134  case AV_PIX_FMT_RGB565:
135  return yuv420_rgb16_mmx;
136  case AV_PIX_FMT_RGB555:
137  return yuv420_rgb15_mmx;
138  }
139  }
140 
141 #endif /* HAVE_X86ASM */
142  return NULL;
143 }
Macro definitions for various function/variable attributes.
#define av_cold
Definition: attributes.h:88
#define NULL
Definition: coverity.c:32
static atomic_int cpu_flags
Definition: cpu.c:50
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:95
#define AV_PIX_FMT_BGR32
Definition: pixfmt.h:374
@ AV_PIX_FMT_RGB24
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:68
@ AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:69
#define AV_PIX_FMT_RGB565
Definition: pixfmt.h:386
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:372
#define AV_PIX_FMT_RGB555
Definition: pixfmt.h:387
external API header
int(* SwsFunc)(struct SwsContext *context, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
static double c[64]
#define EXTERNAL_MMXEXT(flags)
Definition: cpu.h:57
#define EXTERNAL_SSSE3(flags)
Definition: cpu.h:65
#define EXTERNAL_MMX(flags)
Definition: cpu.h:56
av_cold SwsFunc ff_yuv2rgb_init_x86(SwsContext *c)
Definition: yuv2rgb.c:69