Line data Source code
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 72905692 : static av_always_inline void fill_rectangle(void *vp, int w, int h, int stride, uint32_t val, int size){
42 72905692 : uint8_t *p= (uint8_t*)vp;
43 : av_assert2(size==1 || size==2 || size==4);
44 : av_assert2(w<=4);
45 :
46 72905692 : w *= size;
47 72905692 : 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 72905692 : if(w==2){
52 21715707 : const uint16_t v= size==4 ? val : val*0x0101;
53 21715707 : *(uint16_t*)(p + 0*stride)= v;
54 21715707 : if(h==1) return;
55 21715707 : *(uint16_t*)(p + 1*stride)= v;
56 21715707 : if(h==2) return;
57 1487988 : *(uint16_t*)(p + 2*stride)= v;
58 1487988 : *(uint16_t*)(p + 3*stride)= v;
59 51189985 : }else if(w==4){
60 31166697 : const uint32_t v= size==4 ? val : size==2 ? val*0x00010001 : val*0x01010101;
61 31166697 : *(uint32_t*)(p + 0*stride)= v;
62 31166697 : if(h==1) return;
63 31166649 : *(uint32_t*)(p + 1*stride)= v;
64 31166649 : if(h==2) return;
65 27832100 : *(uint32_t*)(p + 2*stride)= v;
66 27832100 : *(uint32_t*)(p + 3*stride)= v;
67 20023288 : }else if(w==8){
68 : // gcc cannot optimize 64-bit math on x86_32
69 : #if HAVE_FAST_64BIT
70 8569852 : const uint64_t v= size==2 ? val*0x0001000100010001ULL : val*0x0100000001ULL;
71 8569852 : *(uint64_t*)(p + 0*stride)= v;
72 8569852 : if(h==1) return;
73 8569788 : *(uint64_t*)(p + 1*stride)= v;
74 8569788 : if(h==2) return;
75 4493901 : *(uint64_t*)(p + 2*stride)= v;
76 4493901 : *(uint64_t*)(p + 3*stride)= v;
77 11453436 : }else if(w==16){
78 11453436 : const uint64_t v= val*0x0100000001ULL;
79 11453436 : *(uint64_t*)(p + 0+0*stride)= v;
80 11453436 : *(uint64_t*)(p + 8+0*stride)= v;
81 11453436 : *(uint64_t*)(p + 0+1*stride)= v;
82 11453436 : *(uint64_t*)(p + 8+1*stride)= v;
83 11453436 : if(h==2) return;
84 9707952 : *(uint64_t*)(p + 0+2*stride)= v;
85 9707952 : *(uint64_t*)(p + 8+2*stride)= v;
86 9707952 : *(uint64_t*)(p + 0+3*stride)= v;
87 9707952 : *(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 */
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