diff src/audio/nds/sound9.c @ 3976:8582c6a5ca16 SDL-1.2

Added initial support for Nintendo DS, based on the work by Troy Davis (GPF)
author Sam Lantinga <slouken@libsdl.org>
date Mon, 25 Jun 2007 00:50:20 +0000
parents
children a1b03ba2fcd0
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/audio/nds/sound9.c	Mon Jun 25 00:50:20 2007 +0000
@@ -0,0 +1,61 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997-2006 Sam Lantinga
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+    Sam Lantinga
+    slouken@libsdl.org
+*/
+#include "SDL_config.h"
+#include "SDL_stdinc.h"
+
+#include "soundcommon.h"
+
+void SoundSystemInit(u32 rate,u32 buffersize,u8 channel,u8 format)
+{
+	soundsystem->rate = rate;
+	
+	if(format == 8) 
+		soundsystem->buffersize = buffersize;
+	else if(format == 16)
+		soundsystem->buffersize = buffersize * sizeof(short);
+
+	soundsystem->mixbuffer = (s8*)SDL_malloc(soundsystem->buffersize);
+	//soundsystem->soundbuffer = soundsystem->mixbuffer;
+	soundsystem->format = format;
+	soundsystem->channel = channel;
+	soundsystem->prevtimer = 0;
+	soundsystem->soundcursor = 0;
+	soundsystem->numsamples = 0;
+	soundsystem->period = 0x1000000 / rate;
+	soundsystem->cmd = INIT;
+}
+
+void SoundStartMixer(void)
+{
+	soundsystem->cmd |= MIX;
+}
+
+void SendCommandToArm7(u32 command)
+{
+    while (REG_IPC_FIFO_CR & IPC_FIFO_SEND_FULL);
+    if (REG_IPC_FIFO_CR & IPC_FIFO_ERROR)
+    {
+        REG_IPC_FIFO_CR |= IPC_FIFO_SEND_CLEAR;
+    } 
+    
+    REG_IPC_FIFO_TX = command;
+}