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1 | /* |
2 | * rectangle filling function | |
3 | * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at> | |
4 | * | |
5 | * This file is part of FFmpeg. | |
6 | * | |
7 | * FFmpeg is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU Lesser General Public | |
9 | * License as published by the Free Software Foundation; either | |
10 | * version 2.1 of the License, or (at your option) any later version. | |
11 | * | |
12 | * FFmpeg is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public | |
18 | * License along with FFmpeg; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | /** | |
23 | * @file | |
24 | * useful rectangle filling function | |
25 | * @author Michael Niedermayer <michaelni@gmx.at> | |
26 | */ | |
27 | ||
28 | #ifndef AVCODEC_RECTANGLE_H | |
29 | #define AVCODEC_RECTANGLE_H | |
30 | ||
31 | #include "config.h" | |
32 | #include "libavutil/common.h" | |
33 | #include "libavutil/avassert.h" | |
34 | ||
35 | /** | |
36 | * fill a rectangle. | |
37 | * @param h height of the rectangle, should be a constant | |
38 | * @param w width of the rectangle, should be a constant | |
39 | * @param size the size of val (1, 2 or 4), should be a constant | |
40 | */ | |
41 | static av_always_inline void fill_rectangle(void *vp, int w, int h, int stride, uint32_t val, int size){ | |
42 | uint8_t *p= (uint8_t*)vp; | |
43 | av_assert2(size==1 || size==2 || size==4); | |
44 | av_assert2(w<=4); | |
45 | ||
46 | w *= size; | |
47 | stride *= size; | |
48 | ||
49 | av_assert2((((long)vp)&(FFMIN(w, 8<<(HAVE_NEON|ARCH_PPC|HAVE_MMX))-1)) == 0); | |
50 | av_assert2((stride&(w-1))==0); | |
51 | if(w==2){ | |
52 | const uint16_t v= size==4 ? val : val*0x0101; | |
53 | *(uint16_t*)(p + 0*stride)= v; | |
54 | if(h==1) return; | |
55 | *(uint16_t*)(p + 1*stride)= v; | |
56 | if(h==2) return; | |
57 | *(uint16_t*)(p + 2*stride)= v; | |
58 | *(uint16_t*)(p + 3*stride)= v; | |
59 | }else if(w==4){ | |
60 | const uint32_t v= size==4 ? val : size==2 ? val*0x00010001 : val*0x01010101; | |
61 | *(uint32_t*)(p + 0*stride)= v; | |
62 | if(h==1) return; | |
63 | *(uint32_t*)(p + 1*stride)= v; | |
64 | if(h==2) return; | |
65 | *(uint32_t*)(p + 2*stride)= v; | |
66 | *(uint32_t*)(p + 3*stride)= v; | |
67 | }else if(w==8){ | |
68 | //gcc can't optimize 64bit math on x86_32 | |
69 | #if HAVE_FAST_64BIT | |
70 | const uint64_t v= size==2 ? val*0x0001000100010001ULL : val*0x0100000001ULL; | |
71 | *(uint64_t*)(p + 0*stride)= v; | |
72 | if(h==1) return; | |
73 | *(uint64_t*)(p + 1*stride)= v; | |
74 | if(h==2) return; | |
75 | *(uint64_t*)(p + 2*stride)= v; | |
76 | *(uint64_t*)(p + 3*stride)= v; | |
77 | }else if(w==16){ | |
78 | const uint64_t v= val*0x0100000001ULL; | |
79 | *(uint64_t*)(p + 0+0*stride)= v; | |
80 | *(uint64_t*)(p + 8+0*stride)= v; | |
81 | *(uint64_t*)(p + 0+1*stride)= v; | |
82 | *(uint64_t*)(p + 8+1*stride)= v; | |
83 | if(h==2) return; | |
84 | *(uint64_t*)(p + 0+2*stride)= v; | |
85 | *(uint64_t*)(p + 8+2*stride)= v; | |
86 | *(uint64_t*)(p + 0+3*stride)= v; | |
87 | *(uint64_t*)(p + 8+3*stride)= v; | |
88 | #else | |
89 | const uint32_t v= size==2 ? val*0x00010001 : val; | |
90 | *(uint32_t*)(p + 0+0*stride)= v; | |
91 | *(uint32_t*)(p + 4+0*stride)= v; | |
92 | if(h==1) return; | |
93 | *(uint32_t*)(p + 0+1*stride)= v; | |
94 | *(uint32_t*)(p + 4+1*stride)= v; | |
95 | if(h==2) return; | |
96 | *(uint32_t*)(p + 0+2*stride)= v; | |
97 | *(uint32_t*)(p + 4+2*stride)= v; | |
98 | *(uint32_t*)(p + 0+3*stride)= v; | |
99 | *(uint32_t*)(p + 4+3*stride)= v; | |
100 | }else if(w==16){ | |
101 | *(uint32_t*)(p + 0+0*stride)= val; | |
102 | *(uint32_t*)(p + 4+0*stride)= val; | |
103 | *(uint32_t*)(p + 8+0*stride)= val; | |
104 | *(uint32_t*)(p +12+0*stride)= val; | |
105 | *(uint32_t*)(p + 0+1*stride)= val; | |
106 | *(uint32_t*)(p + 4+1*stride)= val; | |
107 | *(uint32_t*)(p + 8+1*stride)= val; | |
108 | *(uint32_t*)(p +12+1*stride)= val; | |
109 | if(h==2) return; | |
110 | *(uint32_t*)(p + 0+2*stride)= val; | |
111 | *(uint32_t*)(p + 4+2*stride)= val; | |
112 | *(uint32_t*)(p + 8+2*stride)= val; | |
113 | *(uint32_t*)(p +12+2*stride)= val; | |
114 | *(uint32_t*)(p + 0+3*stride)= val; | |
115 | *(uint32_t*)(p + 4+3*stride)= val; | |
116 | *(uint32_t*)(p + 8+3*stride)= val; | |
117 | *(uint32_t*)(p +12+3*stride)= val; | |
118 | #endif | |
119 | }else | |
120 | av_assert2(0); | |
121 | av_assert2(h==4); | |
122 | } | |
123 | ||
124 | #endif /* AVCODEC_RECTANGLE_H */ |