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Working audio output by Daniel Sumorok.

Browse Source 
Not quite the way I wanted to do it but it will do for now.
(on a real Mac, the real audio hardware should be able to pull/grab the data
 from our buffers - an extra thread with its own set of buffers is wasteful!)
This commit is contained in:
nigel 2006-07-28 13:15:18 +00:00
parent 7af6665619
commit f44d37bac8
5 changed files with 696 additions and 45 deletions
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307
BasiliskII/src/MacOSX/AudioBackEnd.cpp Normal file
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@ -0,0 +1,307 @@
/*
*
* This is based on Apple example software AudioBackEnd.cpp
*
* Copyright © 2004 Apple Computer, Inc., All Rights Reserved
* Original Apple code modified by Daniel Sumorok
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "AudioBackEnd.h"
#pragma mark ---Public Methods---
AudioBackEnd::AudioBackEnd(int bitsPerSample, int numChannels, int sampleRate):
mBitsPerSample(bitsPerSample),
mSampleRate(sampleRate),
mNumChannels(numChannels),
mCallback(NULL),
mCallbackArg(NULL),
mBufferSizeFrames(0),
mFramesProcessed(0),
mAudioBuffer(NULL),
mAudioBufferWriteIndex(0),
mAudioBufferReadIndex(0),
mBytesPerFrame(0),
mAudioBufferSize(0) {
OSStatus err = noErr;
err = Init();
if(err) {
fprintf(stderr,"AudioBackEnd ERROR: Cannot Init AudioBackEnd");
exit(1);
}
}
AudioBackEnd::~AudioBackEnd() { //clean up
Stop();
AUGraphClose(mGraph);
DisposeAUGraph(mGraph);
if(mAudioBuffer != NULL) {
delete mAudioBuffer;
mAudioBuffer = NULL;
mAudioBufferSize = 0;
}
}
OSStatus AudioBackEnd::Init() {
OSStatus err = noErr;
err = SetupGraph();
checkErr(err);
err = SetupBuffers();
checkErr(err);
err = AUGraphInitialize(mGraph);
checkErr(err);
return err;
}
#pragma mark --- Operation---
OSStatus AudioBackEnd::Start()
{
OSStatus err = noErr;
if(!IsRunning()) {
mFramesProcessed = 0;
mAudioBufferWriteIndex = 0;
mAudioBufferReadIndex = 0;
err = AUGraphStart(mGraph);
}
return err;
}
OSStatus AudioBackEnd::Stop() {
OSStatus err = noErr;
if(IsRunning()) {
err = AUGraphStop(mGraph);
}
return err;
}
Boolean AudioBackEnd::IsRunning() {
OSStatus err = noErr;
Boolean graphRunning;
err = AUGraphIsRunning(mGraph,&graphRunning);
return (graphRunning);
}
#pragma mark -
#pragma mark --Private methods---
OSStatus AudioBackEnd::SetupGraph() {
OSStatus err = noErr;
AURenderCallbackStruct output;
UInt32 size;
ComponentDescription outDesc;
AudioDeviceID out;
//Make a New Graph
err = NewAUGraph(&mGraph);
checkErr(err);
//Open the Graph, AudioUnits are opened but not initialized
err = AUGraphOpen(mGraph);
checkErr(err);
outDesc.componentType = kAudioUnitType_Output;
outDesc.componentSubType = kAudioUnitSubType_DefaultOutput;
outDesc.componentManufacturer = kAudioUnitManufacturer_Apple;
outDesc.componentFlags = 0;
outDesc.componentFlagsMask = 0;
//////////////////////////
///MAKE NODES
//This creates a node in the graph that is an AudioUnit, using
//the supplied ComponentDescription to find and open that unit
err = AUGraphNewNode(mGraph, &outDesc, 0, NULL, &mOutputNode);
checkErr(err);
//Get Audio Units from AUGraph node
err = AUGraphGetNodeInfo(mGraph, mOutputNode, NULL, NULL, NULL, &mOutputUnit);
checkErr(err);
err = AUGraphUpdate(mGraph, NULL);
checkErr(err);
size = sizeof(AudioDeviceID);
err = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultOutputDevice,
&size, &out);
checkErr(err);
mOutputDevice.Init(out, false);
//Set the Current Device to the Default Output Unit.
err = AudioUnitSetProperty(mOutputUnit,
kAudioOutputUnitProperty_CurrentDevice,
kAudioUnitScope_Global,
0,
&out,
sizeof(out));
checkErr(err);
output.inputProc = OutputProc;
output.inputProcRefCon = this;
err = AudioUnitSetProperty(mOutputUnit,
kAudioUnitProperty_SetRenderCallback,
kAudioUnitScope_Input,
0,
&output,
sizeof(output));
checkErr(err);
return err;
}
//Allocate Audio Buffer List(s) to hold the data from input.
OSStatus AudioBackEnd::SetupBuffers() {
OSStatus err = noErr;
UInt32 safetyOffset;
AudioStreamBasicDescription asbd;
UInt32 propertySize;
propertySize = sizeof(mBufferSizeFrames);
err = AudioUnitGetProperty(mOutputUnit, kAudioDevicePropertyBufferFrameSize,
kAudioUnitScope_Global, 0, &mBufferSizeFrames,
&propertySize);
propertySize = sizeof(safetyOffset);
safetyOffset = 0;
err = AudioUnitGetProperty(mOutputUnit, kAudioDevicePropertySafetyOffset,
kAudioUnitScope_Global, 0, &safetyOffset,
&propertySize);
asbd.mFormatID = 0x6c70636d; // 'lpcm'
asbd.mFormatFlags = (kAudioFormatFlagIsSignedInteger |
kAudioFormatFlagIsBigEndian |
kAudioFormatFlagIsPacked);
asbd.mChannelsPerFrame = mNumChannels;
asbd.mSampleRate = mSampleRate;
if(asbd.mFormatFlags & kAudioFormatFlagIsSignedInteger) {
asbd.mBitsPerChannel = mBitsPerSample;
} else if(asbd.mFormatFlags & kAudioFormatFlagIsFloat) {
asbd.mBitsPerChannel = 32;
} else {
asbd.mBitsPerChannel = 0;
}
asbd.mFramesPerPacket = 1;
asbd.mBytesPerFrame = (asbd.mBitsPerChannel / 8) * asbd.mChannelsPerFrame;
asbd.mBytesPerPacket = asbd.mBytesPerFrame * asbd.mFramesPerPacket;
asbd.mReserved = 0;
mBytesPerFrame = asbd.mBytesPerFrame;
if((mBytesPerFrame & (mBytesPerFrame - 1)) != 0) {
printf("Audio buffer size must be a power of two!\n");
return -1;
}
propertySize = sizeof(asbd);
err = AudioUnitSetProperty(mOutputUnit, kAudioUnitProperty_StreamFormat,
kAudioUnitScope_Input, 0, &asbd, propertySize);
checkErr(err);
if(mAudioBuffer != NULL) {
delete mAudioBuffer;
mAudioBufferSize = 0;
}
mAudioBufferSize = mBytesPerFrame * mBufferSizeFrames * 2;
mAudioBuffer = new UInt8[mAudioBufferSize];
bzero(mAudioBuffer, mAudioBufferSize);
return err;
}
#pragma mark -
#pragma mark -- IO Procs --
OSStatus AudioBackEnd::OutputProc(void *inRefCon,
AudioUnitRenderActionFlags *ioActionFlags,
const AudioTimeStamp *TimeStamp,
UInt32 inBusNumber,
UInt32 inNumberFrames,
AudioBufferList * ioData) {
OSStatus err = noErr;
AudioBackEnd *This = (AudioBackEnd *)inRefCon;
UInt8 *dstPtr;
UInt32 bytesToCopy;
UInt32 bytesUntilEnd;
This->mFramesProcessed += inNumberFrames;
dstPtr = (UInt8 *)ioData->mBuffers[0].mData;
if(This->mAudioBuffer == NULL) {
bzero(dstPtr, inNumberFrames * This->mBytesPerFrame);
return noErr;
}
bytesToCopy = inNumberFrames * This->mBytesPerFrame;
bytesUntilEnd = This->mAudioBufferSize - This->mAudioBufferReadIndex;
if(bytesUntilEnd < bytesToCopy) {
memcpy(dstPtr, &This->mAudioBuffer[This->mAudioBufferReadIndex],
bytesUntilEnd);
memcpy(dstPtr, This->mAudioBuffer, bytesToCopy - bytesUntilEnd);
This->mAudioBufferReadIndex = bytesToCopy - bytesUntilEnd;
} else {
memcpy(dstPtr, &This->mAudioBuffer[This->mAudioBufferReadIndex],
bytesToCopy);
This->mAudioBufferReadIndex += bytesToCopy;
}
while(This->mFramesProcessed >= This->mBufferSizeFrames) {
This->mFramesProcessed -= This->mBufferSizeFrames;
if(This->mCallback != NULL) {
This->mCallback(This->mCallbackArg);
}
}
return err;
}
void AudioBackEnd::setCallback(playthruCallback func, void *arg) {
mCallback = func;
mCallbackArg = arg;
}
UInt32 AudioBackEnd::BufferSizeFrames() {
return mBufferSizeFrames;
}
int AudioBackEnd::sendAudioBuffer(void *buffer, int numFrames) {
UInt8 *dstBuffer;
int totalBytes;
mAudioBufferWriteIndex += (mAudioBufferSize / 2);
mAudioBufferWriteIndex &= (mAudioBufferSize - 1);
dstBuffer = &mAudioBuffer[mAudioBufferWriteIndex];
totalBytes = mBytesPerFrame * numFrames;
memcpy(dstBuffer, buffer, totalBytes);
dstBuffer += totalBytes;
bzero(dstBuffer, (mBufferSizeFrames * mBytesPerFrame) - totalBytes);
return numFrames;
}

86
BasiliskII/src/MacOSX/AudioBackEnd.h Normal file
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@ -0,0 +1,86 @@
/*
*
* This is based on Apple example software AudioBackEnd.cpp
*
* Copyright © 2004 Apple Computer, Inc., All Rights Reserved
* Original Apple code modified by Daniel Sumorok
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __AudioBackEnd_H__
#define __AudioBackEnd_H__
#define checkErr( err) \
if(err) {\
OSStatus error = static_cast<OSStatus>(err);\
fprintf(stderr, "AudioBackEnd Error: %ld -> %s: %d\n", error,\
__FILE__, \
__LINE__\
);\
fflush(stdout);\
}
#include <CoreAudio/CoreAudio.h>
#include <AudioToolbox/AudioToolbox.h>
#include <AudioUnit/AudioUnit.h>
#include <pthread.h>
#include "AudioDevice.h"
typedef void (*playthruCallback)(void *arg);
class AudioBackEnd {
public:
AudioBackEnd(int bitsPerSample, int numChannels, int sampleRate);
~AudioBackEnd();
OSStatus Init();
OSStatus Start();
OSStatus Stop();
Boolean IsRunning();
void setCallback(playthruCallback func, void *arg);
UInt32 BufferSizeFrames();
int sendAudioBuffer(void *buffer, int numFrames);
private:
OSStatus SetupGraph();
OSStatus CallbackSetup();
OSStatus SetupBuffers();
static OSStatus OutputProc(void *inRefCon,
AudioUnitRenderActionFlags *ioActionFlags,
const AudioTimeStamp *inTimeStamp,
UInt32 inBusNumber,
UInt32 inNumberFrames,
AudioBufferList * ioData);
AudioDevice mOutputDevice;
AUGraph mGraph;
AUNode mOutputNode;
AudioUnit mOutputUnit;
int mBitsPerSample;
int mSampleRate;
int mNumChannels;
playthruCallback mCallback;
void *mCallbackArg;
UInt32 mBufferSizeFrames;
UInt32 mFramesProcessed;
UInt8 *mAudioBuffer;
UInt32 mAudioBufferWriteIndex;
UInt32 mAudioBufferReadIndex;
UInt32 mBytesPerFrame;
UInt32 mAudioBufferSize;
};
#endif //__AudioBackEnd_H__

97
BasiliskII/src/MacOSX/AudioDevice.cpp Normal file
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@ -0,0 +1,97 @@
/* Copyright: © Copyright 2004 Apple Computer, Inc. All rights reserved.
Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc.
("Apple") in consideration of your agreement to the following terms, and your
use, installation, modification or redistribution of this Apple software
constitutes acceptance of these terms. If you do not agree with these terms,
please do not use, install, modify or redistribute this Apple software.
In consideration of your agreement to abide by the following terms, and subject
to these terms, Apple grants you a personal, non-exclusive license, under AppleÕs
copyrights in this original Apple software (the "Apple Software"), to use,
reproduce, modify and redistribute the Apple Software, with or without
modifications, in source and/or binary forms; provided that if you redistribute
the Apple Software in its entirety and without modifications, you must retain
this notice and the following text and disclaimers in all such redistributions of
the Apple Software. Neither the name, trademarks, service marks or logos of
Apple Computer, Inc. may be used to endorse or promote products derived from the
Apple Software without specific prior written permission from Apple. Except as
expressly stated in this notice, no other rights or licenses, express or implied,
are granted by Apple herein, including but not limited to any patent rights that
may be infringed by your derivative works or by other works in which the Apple
Software may be incorporated.
The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
COMBINATION WITH YOUR PRODUCTS.
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION
OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT
(INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*=============================================================================
AudioDevice.cpp
=============================================================================*/
#include "AudioDevice.h"
void AudioDevice::Init(AudioDeviceID devid, bool isInput)
{
mID = devid;
mIsInput = isInput;
if (mID == kAudioDeviceUnknown) return;
UInt32 propsize;
propsize = sizeof(UInt32);
verify_noerr(AudioDeviceGetProperty(mID, 0, mIsInput, kAudioDevicePropertySafetyOffset, &propsize, &mSafetyOffset));
propsize = sizeof(UInt32);
verify_noerr(AudioDeviceGetProperty(mID, 0, mIsInput, kAudioDevicePropertyBufferFrameSize, &propsize, &mBufferSizeFrames));
propsize = sizeof(AudioStreamBasicDescription);
verify_noerr(AudioDeviceGetProperty(mID, 0, mIsInput, kAudioDevicePropertyStreamFormat, &propsize, &mFormat));
}
void AudioDevice::SetBufferSize(UInt32 size)
{
UInt32 propsize = sizeof(UInt32);
verify_noerr(AudioDeviceSetProperty(mID, NULL, 0, mIsInput, kAudioDevicePropertyBufferFrameSize, propsize, &size));
propsize = sizeof(UInt32);
verify_noerr(AudioDeviceGetProperty(mID, 0, mIsInput, kAudioDevicePropertyBufferFrameSize, &propsize, &mBufferSizeFrames));
}
int AudioDevice::CountChannels()
{
OSStatus err;
UInt32 propSize;
int result = 0;
err = AudioDeviceGetPropertyInfo(mID, 0, mIsInput, kAudioDevicePropertyStreamConfiguration, &propSize, NULL);
if (err) return 0;
AudioBufferList *buflist = (AudioBufferList *)malloc(propSize);
err = AudioDeviceGetProperty(mID, 0, mIsInput, kAudioDevicePropertyStreamConfiguration, &propSize, buflist);
if (!err) {
for (UInt32 i = 0; i < buflist->mNumberBuffers; ++i) {
result += buflist->mBuffers[i].mNumberChannels;
}
}
free(buflist);
return result;
}
char * AudioDevice::GetName(char *buf, UInt32 maxlen)
{
verify_noerr(AudioDeviceGetProperty(mID, 0, mIsInput, kAudioDevicePropertyDeviceName, &maxlen, buf));
return buf;
}

72
BasiliskII/src/MacOSX/AudioDevice.h Normal file
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@ -0,0 +1,72 @@
/* Copyright: © Copyright 2004 Apple Computer, Inc. All rights reserved.
Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc.
("Apple") in consideration of your agreement to the following terms, and your
use, installation, modification or redistribution of this Apple software
constitutes acceptance of these terms. If you do not agree with these terms,
please do not use, install, modify or redistribute this Apple software.
In consideration of your agreement to abide by the following terms, and subject
to these terms, Apple grants you a personal, non-exclusive license, under AppleÕs
copyrights in this original Apple software (the "Apple Software"), to use,
reproduce, modify and redistribute the Apple Software, with or without
modifications, in source and/or binary forms; provided that if you redistribute
the Apple Software in its entirety and without modifications, you must retain
this notice and the following text and disclaimers in all such redistributions of
the Apple Software. Neither the name, trademarks, service marks or logos of
Apple Computer, Inc. may be used to endorse or promote products derived from the
Apple Software without specific prior written permission from Apple. Except as
expressly stated in this notice, no other rights or licenses, express or implied,
are granted by Apple herein, including but not limited to any patent rights that
may be infringed by your derivative works or by other works in which the Apple
Software may be incorporated.
The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
COMBINATION WITH YOUR PRODUCTS.
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION
OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT
(INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*=============================================================================
AudioDevice.h
=============================================================================*/
#ifndef __AudioDevice_h__
#define __AudioDevice_h__
#include <CoreServices/CoreServices.h>
#include <CoreAudio/CoreAudio.h>
class AudioDevice {
public:
AudioDevice() : mID(kAudioDeviceUnknown) { }
AudioDevice(AudioDeviceID devid, bool isInput) { Init(devid, isInput); }
void Init(AudioDeviceID devid, bool isInput);
bool Valid() { return mID != kAudioDeviceUnknown; }
void SetBufferSize(UInt32 size);
int CountChannels();
char * GetName(char *buf, UInt32 maxlen);
public:
AudioDeviceID mID;
bool mIsInput;
UInt32 mSafetyOffset;
UInt32 mBufferSizeFrames;
AudioStreamBasicDescription mFormat;
};
#endif // __AudioDevice_h__

179
BasiliskII/src/MacOSX/audio_macosx.cpp
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@ -1,7 +1,6 @@
/*
* audio_MacOSX.cpp - Based on audio_dummy.cpp
*
* $Id$
* audio_macosx.cpp - Audio support, implementation Mac OS X
* Copyright (C) 2006, Daniel Sumorok
*
* Basilisk II (C) 1997-2005 Christian Bauer
*
@ -21,65 +20,87 @@
*/
#include "sysdeps.h"
#include <sys/ioctl.h>
#include <unistd.h>
#include <errno.h>
#include <pthread.h>
#include <semaphore.h>
#include "cpu_emulation.h"
#include "main.h"
#include "prefs.h"
#include "user_strings.h"
#include "audio.h"
#include "audio_defs.h"
#include "MacOSX_sound_if.h"
#define DEBUG 1
#include "debug.h"
#include "main_macosx.h"
// The currently selected audio parameters (indices in
// audio_sample_rates[] etc. vectors)
static int audio_sample_rate_index = 0;
static int audio_sample_size_index = 0;
static int audio_channel_count_index = 0;
#import <CoreFoundation/CoreFoundation.h>
#import <CoreAudio/CoreAudio.h>
AudioDeviceID device = kAudioDeviceUnknown;
// Prototypes
static OSXsoundOutput *soundOutput = NULL;
static bool main_mute = false;
static bool speaker_mute = false;
/*
* Initialization
*/
static int audioInt(void);
static bool open_audio(void)
{
AudioStatus.sample_rate = audio_sample_rates[audio_sample_rate_index];
AudioStatus.sample_size = audio_sample_sizes[audio_sample_size_index];
AudioStatus.channels = audio_channel_counts[audio_channel_count_index];
if (soundOutput)
delete soundOutput;
soundOutput = new OSXsoundOutput();
soundOutput->start(AudioStatus.sample_size, AudioStatus.channels,
AudioStatus.sample_rate >> 16);
soundOutput->setCallback(audioInt);
audio_frames_per_block = soundOutput->bufferSizeFrames();
audio_open = true;
return true;
}
void AudioInit(void)
{
int count;
// Init audio status and feature flags
AudioStatus.sample_rate = 44100 << 16;
AudioStatus.sample_size = 16;
AudioStatus.channels = 2;
AudioStatus.mixer = 0;
AudioStatus.num_sources = 0;
audio_component_flags = cmpWantsRegisterMessage | kStereoOut | k16BitOut;
// Only one sample format is supported
audio_sample_rates.push_back(44100 << 16);
audio_sample_sizes.push_back(16);
audio_channel_counts.push_back(2);
// Sound disabled in prefs? Then do nothing
if (PrefsFindBool("nosound"))
return;
//audio_sample_sizes.push_back(8);
audio_sample_sizes.push_back(16);
// Get default audio device
audio_channel_counts.push_back(1);
audio_channel_counts.push_back(2);
audio_sample_rates.push_back(11025 << 16);
audio_sample_rates.push_back(22050 << 16);
audio_sample_rates.push_back(44100 << 16);
count = sizeof(device);
err = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultOutputDevice,
&count, (void *) &device);
if ( err != noErr || device == kAudioDeviceUnknown )
{
NSLog(@"Failed to get default audio output device");
audio_open = false;
return;
}
// Default to highest supported values
audio_sample_rate_index = audio_sample_rates.size() - 1;
audio_sample_size_index = audio_sample_sizes.size() - 1;
audio_channel_count_index = audio_channel_counts.size() - 1;
AudioStatus.mixer = 0;
AudioStatus.num_sources = 0;
audio_component_flags = cmpWantsRegisterMessage | kStereoOut | k16BitOut;
audio_component_flags = 0;
// Audio not available
audio_open = false;
open_audio();
}
@ -87,8 +108,23 @@ void AudioInit(void)
* Deinitialization
*/
static void close_audio(void)
{
D(bug("Closing Audio\n"));
if (soundOutput)
{
delete soundOutput;
soundOutput = NULL;
}
audio_open = false;
}
void AudioExit(void)
{
// Close audio device
close_audio();
}
@ -98,6 +134,7 @@ void AudioExit(void)
void audio_enter_stream()
{
// Streaming thread is always running to avoid clicking noises
}
@ -107,6 +144,7 @@ void audio_enter_stream()
void audio_exit_stream()
{
// Streaming thread is always running to avoid clicking noises
}
@ -117,6 +155,40 @@ void audio_exit_stream()
void AudioInterrupt(void)
{
D(bug("AudioInterrupt\n"));
uint32 apple_stream_info;
uint32 numSamples;
int16 *p;
M68kRegisters r;
if (!AudioStatus.mixer)
{
numSamples = 0;
soundOutput->sendAudioBuffer((void *)p, (int)numSamples);
D(bug("AudioInterrupt done\n"));
return;
}
// Get data from apple mixer
r.a[0] = audio_data + adatStreamInfo;
r.a[1] = AudioStatus.mixer;
Execute68k(audio_data + adatGetSourceData, &r);
D(bug(" GetSourceData() returns %08lx\n", r.d[0]));
apple_stream_info = ReadMacInt32(audio_data + adatStreamInfo);
if (apple_stream_info && (main_mute == false) && (speaker_mute == false))
{
numSamples = ReadMacInt32(apple_stream_info + scd_sampleCount);
p = (int16 *)Mac2HostAddr(ReadMacInt32(apple_stream_info + scd_buffer));
}
else
{
numSamples = 0;
p = NULL;
}
soundOutput->sendAudioBuffer((void *)p, (int)numSamples);
D(bug("AudioInterrupt done\n"));
}
@ -128,26 +200,34 @@ void AudioInterrupt(void)
bool audio_set_sample_rate(int index)
{
close_audio();
audio_sample_rate_index = index;
return open_audio();
}
bool audio_set_sample_size(int index)
{
close_audio();
audio_sample_size_index = index;
return open_audio();
}
bool audio_set_channels(int index)
{
close_audio();
audio_channel_count_index = index;
return open_audio();
}
/*
* Get/set volume controls (volume values received/returned have the left channel
* volume in the upper 16 bits and the right channel volume in the lower 16 bits;
* both volumes are 8.8 fixed point values with 0x0100 meaning "maximum volume"))
* Get/set volume controls (volume values received/returned have the
* left channel volume in the upper 16 bits and the right channel
* volume in the lower 16 bits; both volumes are 8.8 fixed point
* values with 0x0100 meaning "maximum volume"))
*/
bool audio_get_main_mute(void)
{
return false;
return main_mute;
}
uint32 audio_get_main_volume(void)
@ -157,7 +237,7 @@ uint32 audio_get_main_volume(void)
bool audio_get_speaker_mute(void)
{
return false;
return speaker_mute;
}
uint32 audio_get_speaker_volume(void)
@ -167,6 +247,7 @@ uint32 audio_get_speaker_volume(void)
void audio_set_main_mute(bool mute)
{
main_mute = mute;
}
void audio_set_main_volume(uint32 vol)
@ -175,8 +256,16 @@ void audio_set_main_volume(uint32 vol)
void audio_set_speaker_mute(bool mute)
{
speaker_mute = mute;
}
void audio_set_speaker_volume(uint32 vol)
{
}
static int audioInt(void)
{
SetInterruptFlag(INTFLAG_AUDIO);
TriggerInterrupt();
return 0;
}