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"
34#include "libswscale/swscale_internal.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 */
45DECLARE_ASM_CONST(8, uint64_t, mmx_00ffw)   = 0x00ff00ff00ff00ffULL;
46DECLARE_ASM_CONST(8, uint64_t, mmx_redmask) = 0xf8f8f8f8f8f8f8f8ULL;
47DECLARE_ASM_CONST(8, uint64_t, mmx_grnmask) = 0xfcfcfcfcfcfcfcfcULL;
48DECLARE_ASM_CONST(8, uint64_t, pb_e0) = 0xe0e0e0e0e0e0e0e0ULL;
49DECLARE_ASM_CONST(8, uint64_t, pb_03) = 0x0303030303030303ULL;
50DECLARE_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
72av_cold SwsFunc ff_yuv2rgb_init_x86(SwsContext *c)
73{
74#if HAVE_MMX_INLINE && HAVE_6REGS
75    int cpu_flags = av_get_cpu_flags();
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}
120