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2ba45a60 DM |
1 | /* |
2 | * Copyright (c) 2011 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_ac3_update_bap_counts_arm, export=1 | |
24 | push {lr} | |
25 | ldrb lr, [r1], #1 | |
26 | 1: | |
27 | lsl r3, lr, #1 | |
28 | ldrh r12, [r0, r3] | |
29 | subs r2, r2, #1 | |
30 | it gt | |
31 | ldrbgt lr, [r1], #1 | |
32 | add r12, r12, #1 | |
33 | strh r12, [r0, r3] | |
34 | bgt 1b | |
35 | pop {pc} | |
36 | endfunc |