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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_get_pixels_armv6, export=1 | |
24 | pld [r1, r2] | |
25 | push {r4-r8, lr} | |
26 | mov lr, #8 | |
27 | 1: | |
28 | ldrd_post r4, r5, r1, r2 | |
29 | subs lr, lr, #1 | |
30 | uxtb16 r6, r4 | |
31 | uxtb16 r4, r4, ror #8 | |
32 | uxtb16 r12, r5 | |
33 | uxtb16 r8, r5, ror #8 | |
34 | pld [r1, r2] | |
35 | pkhbt r5, r6, r4, lsl #16 | |
36 | pkhtb r6, r4, r6, asr #16 | |
37 | pkhbt r7, r12, r8, lsl #16 | |
38 | pkhtb r12, r8, r12, asr #16 | |
39 | stm r0!, {r5,r6,r7,r12} | |
40 | bgt 1b | |
41 | ||
42 | pop {r4-r8, pc} | |
43 | endfunc | |
44 | ||
45 | function ff_diff_pixels_armv6, export=1 | |
46 | pld [r1, r3] | |
47 | pld [r2, r3] | |
48 | push {r4-r9, lr} | |
49 | mov lr, #8 | |
50 | 1: | |
51 | ldrd_post r4, r5, r1, r3 | |
52 | ldrd_post r6, r7, r2, r3 | |
53 | uxtb16 r8, r4 | |
54 | uxtb16 r4, r4, ror #8 | |
55 | uxtb16 r9, r6 | |
56 | uxtb16 r6, r6, ror #8 | |
57 | pld [r1, r3] | |
58 | ssub16 r9, r8, r9 | |
59 | ssub16 r6, r4, r6 | |
60 | uxtb16 r8, r5 | |
61 | uxtb16 r5, r5, ror #8 | |
62 | pld [r2, r3] | |
63 | pkhbt r4, r9, r6, lsl #16 | |
64 | pkhtb r6, r6, r9, asr #16 | |
65 | uxtb16 r9, r7 | |
66 | uxtb16 r7, r7, ror #8 | |
67 | ssub16 r9, r8, r9 | |
68 | ssub16 r5, r5, r7 | |
69 | subs lr, lr, #1 | |
70 | pkhbt r8, r9, r5, lsl #16 | |
71 | pkhtb r9, r5, r9, asr #16 | |
72 | stm r0!, {r4,r6,r8,r9} | |
73 | bgt 1b | |
74 | ||
75 | pop {r4-r9, pc} | |
76 | endfunc |