lilium-voyager/code/macosx/macosx_sndcore.m

325 lines
11 KiB
Objective-C

/*
===========================================================================
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 <CoreServices/CoreServices.h>
#include <CoreAudio/AudioHardware.h>
#include <QuickTime/QuickTime.h>
// For 'ri'
#include "../renderer/tr_local.h"
#import <Foundation/NSData.h>
#import <Foundation/NSString.h>
static unsigned int submissionChunk;
static unsigned int maxMixedSamples;
static short *s_mixedSamples;
static int s_chunkCount; // number of chunks submitted
static qboolean s_isRunning;
static AudioDeviceID outputDeviceID;
static AudioStreamBasicDescription outputStreamBasicDescription;
/*
===============
audioDeviceIOProc
===============
*/
OSStatus audioDeviceIOProc(AudioDeviceID inDevice,
const AudioTimeStamp *inNow,
const AudioBufferList *inInputData,
const AudioTimeStamp *inInputTime,
AudioBufferList *outOutputData,
const AudioTimeStamp *inOutputTime,
void *inClientData)
{
int offset;
short *samples;
unsigned int sampleIndex;
float *outBuffer;
float scale, temp;
offset = ( s_chunkCount * submissionChunk ) % maxMixedSamples;
samples = s_mixedSamples + offset;
assert(outOutputData->mNumberBuffers == 1);
assert(outOutputData->mBuffers[0].mNumberChannels == 2);
//assert(outOutputData->mBuffers[0].mDataByteSize == (dma.submission_chunk * sizeof(float)));
outBuffer = (float *)outOutputData->mBuffers[0].mData;
// If we have run out of samples, return silence
if (s_chunkCount * submissionChunk > dma.channels * s_paintedtime) {
memset(outBuffer, 0, sizeof(*outBuffer) * dma.submission_chunk);
} else {
scale = (1.0f / SHRT_MAX);
if (outputStreamBasicDescription.mSampleRate == 44100 && dma.speed == 22050) {
for (sampleIndex = 0; sampleIndex < dma.submission_chunk; sampleIndex+=2) {
// Convert the samples from shorts to floats. Scale the floats to be [-1..1].
temp = samples[sampleIndex + 0] * scale;
outBuffer[(sampleIndex<<1)+0] = temp;
outBuffer[(sampleIndex<<1)+2] = temp;
temp = samples[sampleIndex + 1] * scale;
outBuffer[(sampleIndex<<1)+1] = temp;
outBuffer[(sampleIndex<<1)+3] = temp;
}
} else if (outputStreamBasicDescription.mSampleRate == 44100 && dma.speed == 11025) {
for (sampleIndex = 0; sampleIndex < dma.submission_chunk; sampleIndex+=4) {
// Convert the samples from shorts to floats. Scale the floats to be [-1..1].
temp = samples[sampleIndex + 0] * scale;
outBuffer[(sampleIndex<<1)+0] = temp;
outBuffer[(sampleIndex<<1)+2] = temp;
outBuffer[(sampleIndex<<1)+4] = temp;
outBuffer[(sampleIndex<<1)+6] = temp;
temp = samples[sampleIndex + 1] * scale;
outBuffer[(sampleIndex<<1)+1] = temp;
outBuffer[(sampleIndex<<1)+3] = temp;
outBuffer[(sampleIndex<<1)+5] = temp;
outBuffer[(sampleIndex<<1)+7] = temp;
}
} else {
for (sampleIndex = 0; sampleIndex < dma.submission_chunk; sampleIndex++) {
// Convert the samples from shorts to floats. Scale the floats to be [-1..1].
outBuffer[sampleIndex] = samples[sampleIndex] * scale;
}
}
}
s_chunkCount++; // this is the next buffer we will submit
return 0;
}
/*
===============
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)
{
cvar_t *bufferSize;
cvar_t *chunkSize;
OSStatus status;
UInt32 propertySize, bufferByteCount;
if (s_isRunning)
return qtrue;
chunkSize = ri.Cvar_Get( "s_chunksize", "2048", CVAR_ARCHIVE );
bufferSize = ri.Cvar_Get( "s_buffersize", "16384", CVAR_ARCHIVE );
Com_Printf(" Chunk size = %d\n", chunkSize->integer);
Com_Printf("Buffer size = %d\n", bufferSize->integer);
if (!chunkSize->integer)
ri.Error(ERR_FATAL, "s_chunksize must be non-zero\n");
if (!bufferSize->integer)
ri.Error(ERR_FATAL, "s_buffersize must be non-zero\n");
if (chunkSize->integer >= bufferSize->integer)
ri.Error(ERR_FATAL, "s_chunksize must be less than s_buffersize\n");
if (bufferSize->integer % chunkSize->integer)
ri.Error(ERR_FATAL, "s_buffersize must be an even multiple of s_chunksize\n");
// Get the output device
propertySize = sizeof(outputDeviceID);
status = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultOutputDevice, &propertySize, &outputDeviceID);
if (status) {
Com_Printf("AudioHardwareGetProperty returned %d\n", status);
return qfalse;
}
if (outputDeviceID == kAudioDeviceUnknown) {
Com_Printf("AudioHardwareGetProperty: outputDeviceID is kAudioDeviceUnknown\n");
return qfalse;
}
// Configure the output device
propertySize = sizeof(bufferByteCount);
bufferByteCount = chunkSize->integer * sizeof(float);
status = AudioDeviceSetProperty(outputDeviceID, NULL, 0, NO, kAudioDevicePropertyBufferSize, propertySize, &bufferByteCount);
if (status) {
Com_Printf("AudioDeviceSetProperty: returned %d when setting kAudioDevicePropertyBufferSize to %d\n", status, chunkSize->integer);
return qfalse;
}
propertySize = sizeof(bufferByteCount);
status = AudioDeviceGetProperty(outputDeviceID, 0, NO, kAudioDevicePropertyBufferSize, &propertySize, &bufferByteCount);
if (status) {
Com_Printf("AudioDeviceGetProperty: returned %d when setting kAudioDevicePropertyBufferSize\n", status);
return qfalse;
}
// Print out the device status
propertySize = sizeof(outputStreamBasicDescription);
status = AudioDeviceGetProperty(outputDeviceID, 0, NO, kAudioDevicePropertyStreamFormat, &propertySize, &outputStreamBasicDescription);
if (status) {
Com_Printf("AudioDeviceGetProperty: returned %d when getting kAudioDevicePropertyStreamFormat\n", status);
return qfalse;
}
Com_Printf("Hardware format:\n");
Com_Printf(" %f mSampleRate\n", outputStreamBasicDescription.mSampleRate);
Com_Printf(" %c%c%c%c mFormatID\n",
(outputStreamBasicDescription.mFormatID & 0xff000000) >> 24,
(outputStreamBasicDescription.mFormatID & 0x00ff0000) >> 16,
(outputStreamBasicDescription.mFormatID & 0x0000ff00) >> 8,
(outputStreamBasicDescription.mFormatID & 0x000000ff) >> 0);
Com_Printf(" %5d mBytesPerPacket\n", outputStreamBasicDescription.mBytesPerPacket);
Com_Printf(" %5d mFramesPerPacket\n", outputStreamBasicDescription.mFramesPerPacket);
Com_Printf(" %5d mBytesPerFrame\n", outputStreamBasicDescription.mBytesPerFrame);
Com_Printf(" %5d mChannelsPerFrame\n", outputStreamBasicDescription.mChannelsPerFrame);
Com_Printf(" %5d mBitsPerChannel\n", outputStreamBasicDescription.mBitsPerChannel);
if(outputStreamBasicDescription.mFormatID != kAudioFormatLinearPCM) {
Com_Printf("Default Audio Device doesn't support Linear PCM!");
return qfalse;
}
// Start sound running
status = AudioDeviceAddIOProc(outputDeviceID, audioDeviceIOProc, NULL);
if (status) {
Com_Printf("AudioDeviceAddIOProc: returned %d\n", status);
return qfalse;
}
submissionChunk = chunkSize->integer;
if (outputStreamBasicDescription.mSampleRate == 44100) {
submissionChunk = chunkSize->integer/2;
}
maxMixedSamples = bufferSize->integer;
s_mixedSamples = calloc(1, sizeof(*s_mixedSamples) * maxMixedSamples);
Com_Printf("Chunk Count = %d\n", (maxMixedSamples / submissionChunk));
// Tell the main app what we expect from it
dma.samples = maxMixedSamples;
dma.submission_chunk = submissionChunk;
dma.samplebits = 16;
dma.buffer = (byte *)s_mixedSamples;
dma.channels = outputStreamBasicDescription.mChannelsPerFrame;
dma.speed = 22050; //(unsigned long)outputStreamBasicDescription.mSampleRate;
// We haven't enqueued anything yet
s_chunkCount = 0;
status = AudioDeviceStart(outputDeviceID, audioDeviceIOProc);
if (status) {
Com_Printf("AudioDeviceStart: returned %d\n", status);
return qfalse;
}
s_isRunning = qtrue;
return qtrue;
}
/*
===============
SNDDMA_GetBufferDuration
===============
*/
float SNDDMA_GetBufferDuration(void)
{
return (float)dma.samples / (float)(dma.channels * dma.speed);
}
/*
===============
SNDDMA_GetDMAPos
===============
*/
int SNDDMA_GetDMAPos(void)
{
return s_chunkCount * dma.submission_chunk;
}
/*
===============
SNDDMA_Shutdown
===============
*/
void SNDDMA_Shutdown(void)
{
OSStatus status;
if (!s_isRunning)
return;
status = AudioDeviceStop(outputDeviceID, audioDeviceIOProc);
if (status) {
Com_Printf("AudioDeviceStop: returned %d\n", status);
return;
}
s_isRunning = qfalse;
status = AudioDeviceRemoveIOProc(outputDeviceID, audioDeviceIOProc);
if (status) {
Com_Printf("AudioDeviceRemoveIOProc: returned %d\n", status);
return;
}
free(s_mixedSamples);
s_mixedSamples = NULL;
dma.samples = NULL;
}
/*
===============
SNDDMA_BeginPainting
===============
*/
void SNDDMA_BeginPainting(void) {
}
/*
===============
SNDDMA_Submit
===============
*/
void SNDDMA_Submit(void) {
}