1 /* 2 SDL - Simple DirectMedia Layer 3 Copyright (C) 1997-2012 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 (at) 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 } 62
