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Diffstat (limited to 'code/macosx/macosx_snddma.m')
| -rw-r--r-- | code/macosx/macosx_snddma.m | 205 |
1 files changed, 0 insertions, 205 deletions
diff --git a/code/macosx/macosx_snddma.m b/code/macosx/macosx_snddma.m deleted file mode 100644 index 5d1c705..0000000 --- a/code/macosx/macosx_snddma.m +++ /dev/null @@ -1,205 +0,0 @@ -/* -=========================================================================== -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 Quake III Arena source code; 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) { -} |