1/*
2 * software YUV to RGB converter
3 *
4 * Copyright (C) 2009 Konstantin Shishkov
5 *
6 * MMX/MMX2 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 Libav.
11 *
12 * Libav 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 * Libav 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 Libav; 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#include <assert.h>
31
32#include "config.h"
33#include "libswscale/rgb2rgb.h"
34#include "libswscale/swscale.h"
35#include "libswscale/swscale_internal.h"
36#include "libavutil/x86_cpu.h"
37#include "libavutil/cpu.h"
38
39#define DITHER1XBPP // only for MMX
40
41/* hope these constant values are cache line aligned */
42DECLARE_ASM_CONST(8, uint64_t, mmx_00ffw)   = 0x00ff00ff00ff00ffULL;
43DECLARE_ASM_CONST(8, uint64_t, mmx_redmask) = 0xf8f8f8f8f8f8f8f8ULL;
44DECLARE_ASM_CONST(8, uint64_t, mmx_grnmask) = 0xfcfcfcfcfcfcfcfcULL;
45DECLARE_ASM_CONST(8, uint64_t, pb_e0) = 0xe0e0e0e0e0e0e0e0ULL;
46DECLARE_ASM_CONST(8, uint64_t, pb_03) = 0x0303030303030303ULL;
47DECLARE_ASM_CONST(8, uint64_t, pb_07) = 0x0707070707070707ULL;
48
49//MMX versions
50#if HAVE_MMX
51#undef RENAME
52#undef COMPILE_TEMPLATE_MMX2
53#define COMPILE_TEMPLATE_MMX2 0
54#define RENAME(a) a ## _MMX
55#include "yuv2rgb_template.c"
56#endif /* HAVE_MMX */
57
58//MMX2 versions
59#if HAVE_MMX2
60#undef RENAME
61#undef COMPILE_TEMPLATE_MMX2
62#define COMPILE_TEMPLATE_MMX2 1
63#define RENAME(a) a ## _MMX2
64#include "yuv2rgb_template.c"
65#endif /* HAVE_MMX2 */
66
67SwsFunc ff_yuv2rgb_init_mmx(SwsContext *c)
68{
69    int cpu_flags = av_get_cpu_flags();
70
71    if (c->srcFormat != PIX_FMT_YUV420P &&
72        c->srcFormat != PIX_FMT_YUVA420P)
73        return NULL;
74
75#if HAVE_MMX2
76    if (cpu_flags & AV_CPU_FLAG_MMX2) {
77        switch (c->dstFormat) {
78        case PIX_FMT_RGB24:  return yuv420_rgb24_MMX2;
79        case PIX_FMT_BGR24:  return yuv420_bgr24_MMX2;
80        }
81    }
82#endif
83
84    if (cpu_flags & AV_CPU_FLAG_MMX) {
85        switch (c->dstFormat) {
86            case PIX_FMT_RGB32:
87                if (c->srcFormat == PIX_FMT_YUVA420P) {
88#if HAVE_7REGS && CONFIG_SWSCALE_ALPHA
89                    return yuva420_rgb32_MMX;
90#endif
91                    break;
92                } else return yuv420_rgb32_MMX;
93            case PIX_FMT_BGR32:
94                if (c->srcFormat == PIX_FMT_YUVA420P) {
95#if HAVE_7REGS && CONFIG_SWSCALE_ALPHA
96                    return yuva420_bgr32_MMX;
97#endif
98                    break;
99                } else return yuv420_bgr32_MMX;
100            case PIX_FMT_RGB24:  return yuv420_rgb24_MMX;
101            case PIX_FMT_BGR24:  return yuv420_bgr24_MMX;
102            case PIX_FMT_RGB565: return yuv420_rgb16_MMX;
103            case PIX_FMT_RGB555: return yuv420_rgb15_MMX;
104        }
105    }
106
107    return NULL;
108}
109