The Quake III Arena sources as originally released under the GPL license on August 20, 2005.

2012-01-31 13:41:34 -06:00 · 2012-01-31 13:41:34 -06:00 · dbe4ddb103
commit dbe4ddb103
1409 changed files with 806066 additions and 0 deletions
--- a/code/macosx/macosx_snddma.m
+++ b/code/macosx/macosx_snddma.m
@ -0,0 +1,205 @@
+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+
+This file is part of Quake III Arena source code.
+
+Quake III Arena source code is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Quake III Arena source code 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Foobar; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+// mac_snddma.c
+// all other sound mixing is portable
+
+#include "../client/snd_local.h"
+#include <Carbon/Carbon.h>
+
+// For 'ri'
+#include "../renderer/tr_local.h"
+
+#import <Foundation/NSZone.h>
+
+// TJW - Different versions of SoundManager have different DMA buffer sizes.  On MacOS X DP2,
+// the buffer size is 8K.  On MacOS 9 it is much smaller.  The SoundManager guy at Apple says
+// that the size of the buffer will be decreasing for final release to help get rid of latency.
+//#define	MAX_MIXED_SAMPLES	(0x8000 * 64)
+//#define	SUBMISSION_CHUNK	 (0x100 * 64)
+
+// Original MacOS 9 sizes
+//#define	MAX_MIXED_SAMPLES	0x8000
+//#define	SUBMISSION_CHUNK	 0x100 
+
+
+static unsigned int submissionChunk;
+static unsigned int maxMixedSamples;
+
+static	short		*s_mixedSamples;
+static	int				 s_chunkCount;		// number of chunks submitted
+static	SndChannel		*s_sndChan;
+static	ExtSoundHeader	s_sndHeader;
+
+/*
+===============
+S_Callback
+===============
+*/
+void S_Callback( SndChannel *sc, SndCommand *cmd )
+{
+    SndCommand		mySndCmd;
+    SndCommand		mySndCmd2;
+    int				offset;
+
+    offset = ( s_chunkCount * submissionChunk ) & (maxMixedSamples-1);
+
+    // queue up another sound buffer
+    memset( &s_sndHeader, 0, sizeof( s_sndHeader ) );
+    s_sndHeader.samplePtr = (void *)(s_mixedSamples + offset);
+    s_sndHeader.numChannels = 2;
+    s_sndHeader.sampleRate = rate22khz;
+    s_sndHeader.loopStart = 0;
+    s_sndHeader.loopEnd = 0;
+    s_sndHeader.encode = extSH;
+    s_sndHeader.baseFrequency = 1;
+    s_sndHeader.numFrames = submissionChunk / 2;
+    s_sndHeader.markerChunk = NULL;
+    s_sndHeader.instrumentChunks = NULL;
+    s_sndHeader.AESRecording = NULL;
+    s_sndHeader.sampleSize = 16;
+
+    mySndCmd.cmd = bufferCmd;
+    mySndCmd.param1 = 0;
+    mySndCmd.param2 = (int)&s_sndHeader;
+    SndDoCommand( sc, &mySndCmd, true );
+
+    // and another callback
+    mySndCmd2.cmd = callBackCmd;
+    mySndCmd2.param1 = 0;
+    mySndCmd2.param2 = 0;
+    SndDoCommand( sc, &mySndCmd2, true );
+
+    s_chunkCount++;		// this is the next buffer we will submit
+}
+
+/*
+===============
+S_MakeTestPattern
+===============
+*/
+void S_MakeTestPattern( void ) {
+	int		i;
+	float	v;
+	int		sample;
+	
+	for ( i = 0 ; i < dma.samples / 2 ; i ++ ) {
+		v = sin( M_PI * 2 * i / 64 );
+		sample = v * 0x4000;
+		((short *)dma.buffer)[i*2] = sample;	
+		((short *)dma.buffer)[i*2+1] = sample;	
+	}
+}
+
+/*
+===============
+SNDDMA_Init
+===============
+*/
+qboolean SNDDMA_Init(void)
+{
+    int		err;
+    cvar_t *bufferSize;
+    cvar_t *chunkSize;
+
+    chunkSize = ri.Cvar_Get( "s_chunksize", "8192", CVAR_ARCHIVE );
+    bufferSize = ri.Cvar_Get( "s_buffersize", "65536", CVAR_ARCHIVE );
+
+    if (!chunkSize->integer) {
+        ri.Error(ERR_FATAL, "snd_chunkSize must be non-zero\n");
+    }
+
+    if (!bufferSize->integer) {
+        ri.Error(ERR_FATAL, "snd_bufferSize must be non-zero\n");
+    }
+
+    if (chunkSize->integer >= bufferSize->integer) {
+        ri.Error(ERR_FATAL, "snd_chunkSize must be less than snd_bufferSize\n");
+    }
+
+    if (bufferSize->integer % chunkSize->integer) {
+        ri.Error(ERR_FATAL, "snd_bufferSize must be an even multiple of snd_chunkSize\n");
+    }
+
+    // create a sound channel
+    s_sndChan = NULL;
+    err = SndNewChannel( &s_sndChan, sampledSynth, initStereo, NewSndCallBackProc(S_Callback) );
+    if ( err ) {
+        return false;
+    }
+
+    submissionChunk = chunkSize->integer;
+    maxMixedSamples = bufferSize->integer;
+
+    s_mixedSamples = NSZoneMalloc(NULL, sizeof(*s_mixedSamples) * maxMixedSamples);
+    
+    dma.channels = 2;
+    dma.samples = maxMixedSamples;
+    dma.submission_chunk = submissionChunk;
+    dma.samplebits = 16;
+    dma.speed = 22050;
+    dma.buffer = (byte *)s_mixedSamples;
+
+    // que up the first submission-chunk sized buffer
+    s_chunkCount = 0;
+
+    S_Callback( s_sndChan, NULL );
+
+    return qtrue;
+}
+
+/*
+===============
+SNDDMA_GetDMAPos
+===============
+*/
+int	SNDDMA_GetDMAPos(void) {
+    return s_chunkCount * submissionChunk;
+}
+
+/*
+===============
+SNDDMA_Shutdown
+===============
+*/
+void SNDDMA_Shutdown(void) {
+	if ( s_sndChan ) {
+		SndDisposeChannel( s_sndChan, true );
+		s_sndChan = NULL;
+	}
+}
+
+/*
+===============
+SNDDMA_BeginPainting
+===============
+*/
+void SNDDMA_BeginPainting(void) {
+}
+
+/*
+===============
+SNDDMA_Submit
+===============
+*/
+void SNDDMA_Submit(void) {
+}