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2ba45a60 DM |
1 | /* |
2 | * Copyright (c) 2009 Mans Rullgard <mans@mansr.com> | |
3 | * | |
4 | * This file is part of FFmpeg. | |
5 | * | |
6 | * FFmpeg is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU Lesser General Public | |
8 | * License as published by the Free Software Foundation; either | |
9 | * version 2.1 of the License, or (at your option) any later version. | |
10 | * | |
11 | * FFmpeg is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * Lesser General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU Lesser General Public | |
17 | * License along with FFmpeg; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include "libavutil/arm/asm.S" | |
22 | ||
23 | function ff_pix_norm1_armv6, export=1 | |
24 | push {r4-r6, lr} | |
25 | mov r12, #16 | |
26 | mov lr, #0 | |
27 | 1: | |
28 | ldm r0, {r2-r5} | |
29 | uxtb16 r6, r2 | |
30 | uxtb16 r2, r2, ror #8 | |
31 | smlad lr, r6, r6, lr | |
32 | uxtb16 r6, r3 | |
33 | smlad lr, r2, r2, lr | |
34 | uxtb16 r3, r3, ror #8 | |
35 | smlad lr, r6, r6, lr | |
36 | uxtb16 r6, r4 | |
37 | smlad lr, r3, r3, lr | |
38 | uxtb16 r4, r4, ror #8 | |
39 | smlad lr, r6, r6, lr | |
40 | uxtb16 r6, r5 | |
41 | smlad lr, r4, r4, lr | |
42 | uxtb16 r5, r5, ror #8 | |
43 | smlad lr, r6, r6, lr | |
44 | subs r12, r12, #1 | |
45 | add r0, r0, r1 | |
46 | smlad lr, r5, r5, lr | |
47 | bgt 1b | |
48 | ||
49 | mov r0, lr | |
50 | pop {r4-r6, pc} | |
51 | endfunc | |
52 | ||
53 | function ff_pix_sum_armv6, export=1 | |
54 | push {r4-r7, lr} | |
55 | mov r12, #16 | |
56 | mov r2, #0 | |
57 | mov r3, #0 | |
58 | mov lr, #0 | |
59 | ldr r4, [r0] | |
60 | 1: | |
61 | subs r12, r12, #1 | |
62 | ldr r5, [r0, #4] | |
63 | usada8 r2, r4, lr, r2 | |
64 | ldr r6, [r0, #8] | |
65 | usada8 r3, r5, lr, r3 | |
66 | ldr r7, [r0, #12] | |
67 | usada8 r2, r6, lr, r2 | |
68 | beq 2f | |
69 | ldr_pre r4, r0, r1 | |
70 | usada8 r3, r7, lr, r3 | |
71 | bgt 1b | |
72 | 2: | |
73 | usada8 r3, r7, lr, r3 | |
74 | add r0, r2, r3 | |
75 | pop {r4-r7, pc} | |
76 | endfunc |