e14743d1 |
1 | /* |
2 | SDL - Simple DirectMedia Layer |
3 | Copyright (C) 1997-2009 Sam Lantinga |
4 | |
5 | This library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | This library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with this library; if not, write to the Free Software |
17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
18 | |
19 | Sam Lantinga |
20 | slouken@libsdl.org |
21 | */ |
22 | #include "SDL_config.h" |
23 | #include "SDL_stdinc.h" |
24 | |
25 | #include "soundcommon.h" |
26 | |
27 | void SoundSystemInit(u32 rate,u32 buffersize,u8 channel,u8 format) |
28 | { |
29 | soundsystem->rate = rate; |
30 | |
31 | if(format == 8) |
32 | soundsystem->buffersize = buffersize; |
33 | else if(format == 16) |
34 | soundsystem->buffersize = buffersize * sizeof(short); |
35 | |
36 | soundsystem->mixbuffer = (s8*)SDL_malloc(soundsystem->buffersize); |
37 | //soundsystem->soundbuffer = soundsystem->mixbuffer; |
38 | soundsystem->format = format; |
39 | soundsystem->channel = channel; |
40 | soundsystem->prevtimer = 0; |
41 | soundsystem->soundcursor = 0; |
42 | soundsystem->numsamples = 0; |
43 | soundsystem->period = 0x1000000 / rate; |
44 | soundsystem->cmd = INIT; |
45 | } |
46 | |
47 | void SoundStartMixer(void) |
48 | { |
49 | soundsystem->cmd |= MIX; |
50 | } |
51 | |
52 | void SendCommandToArm7(u32 command) |
53 | { |
54 | while (REG_IPC_FIFO_CR & IPC_FIFO_SEND_FULL); |
55 | if (REG_IPC_FIFO_CR & IPC_FIFO_ERROR) |
56 | { |
57 | REG_IPC_FIFO_CR |= IPC_FIFO_SEND_CLEAR; |
58 | } |
59 | |
60 | REG_IPC_FIFO_TX = command; |
61 | } |