OSStatus CAPlayThrough::MakeGraph()
{
OSStatus err = noErr;
AudioComponentDescription varispeedDesc,outDesc, mixerDesc;
//Q:Why do we need a varispeed unit?
//A:If the input device and the output device are running at different sample rates
//we will need to move the data coming to the graph slower/faster to avoid a pitch change.
varispeedDesc.componentType = kAudioUnitType_FormatConverter;
varispeedDesc.componentSubType = kAudioUnitSubType_Varispeed;
varispeedDesc.componentManufacturer = kAudioUnitManufacturer_Apple;
varispeedDesc.componentFlags = 0;
varispeedDesc.componentFlagsMask = 0;
outDesc.componentType = kAudioUnitType_Output;
outDesc.componentSubType = kAudioUnitSubType_DefaultOutput;
outDesc.componentManufacturer = kAudioUnitManufacturer_Apple;
outDesc.componentFlags = 0;
outDesc.componentFlagsMask = 0;
mixerDesc.componentType = kAudioUnitType_Mixer;
mixerDesc.componentSubType = kAudioUnitSubType_StereoMixer;
mixerDesc.componentManufacturer = kAudioUnitManufacturer_Apple;
mixerDesc.componentFlags = 0;
mixerDesc.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 = AUGraphAddNode(mGraph, &varispeedDesc, &mVarispeedNode);
checkErr(err);
//add a mixer node after the input to use for metering
err = AUGraphAddNode(mGraph, &mixerDesc, &mMixerNode);
checkErr(err);
err = AUGraphAddNode(mGraph, &outDesc, &mOutputNode);
checkErr(err);
//Get Audio Units from AUGraph node
err = AUGraphNodeInfo(mGraph, mVarispeedNode, NULL, &mVarispeedUnit);
checkErr(err);
//get the mixer node
err = AUGraphNodeInfo(mGraph, mMixerNode, NULL, &mMixerUnit);
checkErr(err);
err = AUGraphNodeInfo(mGraph, mOutputNode, NULL, &mOutputUnit);
checkErr(err);
// don't connect nodes until the varispeed unit has input and output formats set
return err;
}
/* we're looking for the sequence output audiounit. */
static OSStatus
GetSequenceAudioUnit(MusicSequence sequence, AudioUnit *aunit)
{
AUGraph graph;
UInt32 nodecount, i;
OSStatus err;
err = MusicSequenceGetAUGraph(sequence, &graph);
if (err != noErr)
return err;
err = AUGraphGetNodeCount(graph, &nodecount);
if (err != noErr)
return err;
for (i = 0; i < nodecount; i++) {
AUNode node;
if (AUGraphGetIndNode(graph, i, &node) != noErr)
continue; /* better luck next time. */
#if MAC_OS_X_VERSION_MIN_REQUIRED < 1050 /* this is deprecated, but works back to 10.0 */
{
struct ComponentDescription desc;
UInt32 classdatasize = 0;
void *classdata = NULL;
err = AUGraphGetNodeInfo(graph, node, &desc, &classdatasize,
&classdata, aunit);
if (err != noErr)
continue;
else if (desc.componentType != kAudioUnitType_Output)
continue;
else if (desc.componentSubType != kAudioUnitSubType_DefaultOutput)
continue;
}
#else /* not deprecated, but requires 10.5 or later */
{
# if !defined(AUDIO_UNIT_VERSION) || ((AUDIO_UNIT_VERSION + 0) < 1060)
/* AUGraphAddNode () is changed to take an AudioComponentDescription*
* desc parameter instead of a ComponentDescription* in the 10.6 SDK.
* AudioComponentDescription is in 10.6 or newer, but it is actually
* the same as struct ComponentDescription with 20 bytes of size and
* the same offsets of all members, therefore, is binary compatible. */
# define AudioComponentDescription ComponentDescription
# endif
AudioComponentDescription desc;
if (AUGraphNodeInfo(graph, node, &desc, aunit) != noErr)
continue;
else if (desc.componentType != kAudioUnitType_Output)
continue;
else if (desc.componentSubType != kAudioUnitSubType_DefaultOutput)
continue;
}
#endif
return noErr; /* found it! */
}
return kAUGraphErr_NodeNotFound;
}
OSStatus FCoreAudioSoundSource::CreateAudioUnit( OSType Type, OSType SubType, OSType Manufacturer, AudioStreamBasicDescription* InputFormat, AudioStreamBasicDescription* OutputFormat, AUNode* OutNode, AudioUnit* OutUnit )
{
AudioComponentDescription Desc;
Desc.componentFlags = 0;
Desc.componentFlagsMask = 0;
Desc.componentType = Type;
Desc.componentSubType = SubType;
Desc.componentManufacturer = Manufacturer;
OSStatus Status = AUGraphAddNode( AudioDevice->GetAudioUnitGraph(), &Desc, OutNode );
if( Status == noErr )
{
Status = AUGraphNodeInfo( AudioDevice->GetAudioUnitGraph(), *OutNode, NULL, OutUnit );
}
if( Status == noErr )
{
if( InputFormat )
{
Status = AudioUnitSetProperty( *OutUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, 0, InputFormat, sizeof( AudioStreamBasicDescription ) );
}
if( Status == noErr )
{
if( OutputFormat )
{
Status = AudioUnitSetProperty( *OutUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Output, 0, OutputFormat, sizeof( AudioStreamBasicDescription ) );
}
}
}
return Status;
}
bool CCoreAudioUnit::Open(AUGraph audioGraph, AudioComponentDescription desc)
{
if (m_audioUnit)
Close();
OSStatus ret;
m_Initialized = false;
ret = AUGraphAddNode(audioGraph, &desc, &m_audioNode);
if (ret)
{
CLog::Log(LOGERROR, "CCoreAudioGraph::Open: Error add m_outputNode. Error = %s", GetError(ret).c_str());
return false;
}
ret = AUGraphNodeInfo(audioGraph, m_audioNode, NULL, &m_audioUnit);
if (ret)
{
CLog::Log(LOGERROR, "CCoreAudioGraph::Open: Error getting m_outputNode. Error = %s", GetError(ret).c_str());
return false;
}
m_audioGraph = audioGraph;
m_Initialized = true;
Start();
return true;
}
OSStatus get_next_node_info()
{
return AUGraphNodeInfo(
m_graph,
m_node_details[m_node_count].m_node,
NULL,
&m_node_details[m_node_count].m_unit);
}
/** Set the volume of the current sequence. */
static void DoSetVolume()
{
if (_sequence == NULL) return;
AUGraph graph;
MusicSequenceGetAUGraph(_sequence, &graph);
AudioUnit output_unit = NULL;
/* Get output audio unit */
UInt32 node_count = 0;
AUGraphGetNodeCount(graph, &node_count);
for (UInt32 i = 0; i < node_count; i++) {
AUNode node;
AUGraphGetIndNode(graph, i, &node);
AudioUnit unit;
OSType comp_type = 0;
#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)
if (MacOSVersionIsAtLeast(10, 5, 0)) {
/* The 10.6 SDK has changed the function prototype of
* AUGraphNodeInfo. This is a binary compatible change,
* but we need to get the type declaration right or
* risk compilation errors. The header AudioComponent.h
* was introduced in 10.6 so use it to decide which
* type definition to use. */
#ifdef __AUDIOCOMPONENT_H__
AudioComponentDescription desc;
#else
ComponentDescription desc;
#endif
AUGraphNodeInfo(graph, node, &desc, &unit);
comp_type = desc.componentType;
} else
#endif
{
#if (MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5)
ComponentDescription desc;
AUGraphGetNodeInfo(graph, node, &desc, NULL, NULL, &unit);
comp_type = desc.componentType;
#endif
}
if (comp_type == kAudioUnitType_Output) {
output_unit = unit;
break;
}
}
if (output_unit == NULL) {
DEBUG(driver, 1, "cocoa_m: Failed to get output node to set volume");
return;
}
Float32 vol = _volume / 127.0f; // 0 - +127 -> 0.0 - 1.0
AudioUnitSetParameter(output_unit, kHALOutputParam_Volume, kAudioUnitScope_Global, 0, vol, 0);
}
AudioUnitNode::AudioUnitNode(AUGraph graph, const AudioComponentDescription& cd) : mGraph(graph)
{
OSStatus err;
err = AUGraphAddNode(graph, &cd, &mNode);
if ((int)err == -2005) {
AudioNodeException exception("badComponentType.");
throw exception;
}
err = AUGraphNodeInfo(graph, mNode, NULL, &mUnit);
}
/* we're looking for the sequence output audiounit. */
static OSStatus
GetSequenceAudioUnit(MusicSequence sequence, AudioUnit *aunit)
{
AUGraph graph;
UInt32 nodecount, i;
OSStatus err;
err = MusicSequenceGetAUGraph(sequence, &graph);
if (err != noErr)
return err;
err = AUGraphGetNodeCount(graph, &nodecount);
if (err != noErr)
return err;
for (i = 0; i < nodecount; i++) {
AUNode node;
if (AUGraphGetIndNode(graph, i, &node) != noErr)
continue; /* better luck next time. */
#if MAC_OS_X_VERSION_MIN_REQUIRED < 1060 /* this is deprecated, but works back to 10.0 */
{
struct ComponentDescription desc;
UInt32 classdatasize = 0;
void *classdata = NULL;
err = AUGraphGetNodeInfo(graph, node, &desc, &classdatasize,
&classdata, aunit);
if (err != noErr)
continue;
else if (desc.componentType != kAudioUnitType_Output)
continue;
else if (desc.componentSubType != kAudioUnitSubType_DefaultOutput)
continue;
}
#else /* not deprecated, but requires 10.5 or later */
{
AudioComponentDescription desc;
if (AUGraphNodeInfo(graph, node, &desc, aunit) != noErr)
continue;
else if (desc.componentType != kAudioUnitType_Output)
continue;
else if (desc.componentSubType != kAudioUnitSubType_DefaultOutput)
continue;
}
#endif
return noErr; /* found it! */
}
return kAUGraphErr_NodeNotFound;
}
OSStatus GetSynthFromGraph (AUGraph& inGraph, AudioUnit& outSynth)
{
UInt32 nodeCount;
OSStatus result = noErr;
FailIf ((result = AUGraphGetNodeCount (inGraph, &nodeCount)), fail, "AUGraphGetNodeCount");
for (UInt32 i = 0; i < nodeCount; ++i)
{
AUNode node;
FailIf ((result = AUGraphGetIndNode(inGraph, i, &node)), fail, "AUGraphGetIndNode");
AudioComponentDescription desc;
FailIf ((result = AUGraphNodeInfo(inGraph, node, &desc, 0)), fail, "AUGraphNodeInfo");
if (desc.componentType == kAudioUnitType_MusicDevice)
{
FailIf ((result = AUGraphNodeInfo(inGraph, node, 0, &outSynth)), fail, "AUGraphNodeInfo");
return noErr;
}
}
fail: // didn't find the synth AU
return -1;
}
OSStatus SetUpGraph (AUGraph &inGraph, UInt32 numFrames, Float64 &sampleRate, bool isOffline)
{
OSStatus result = noErr;
AudioUnit outputUnit = 0;
AUNode outputNode;
// the frame size is the I/O size to the device
// the device is going to run at a sample rate it is set at
// so, when we set this, we also have to set the max frames for the graph nodes
UInt32 nodeCount;
FailIf ((result = AUGraphGetNodeCount (inGraph, &nodeCount)), home, "AUGraphGetNodeCount");
for (int i = 0; i < (int)nodeCount; ++i)
{
AUNode node;
FailIf ((result = AUGraphGetIndNode(inGraph, i, &node)), home, "AUGraphGetIndNode");
AudioComponentDescription desc;
AudioUnit unit;
FailIf ((result = AUGraphNodeInfo(inGraph, node, &desc, &unit)), home, "AUGraphNodeInfo");
if (desc.componentType == kAudioUnitType_Output)
{
if (outputUnit == 0) {
outputUnit = unit;
FailIf ((result = AUGraphNodeInfo(inGraph, node, 0, &outputUnit)), home, "AUGraphNodeInfo");
if (!isOffline) {
// these two properties are only applicable if its a device we're playing too
FailIf ((result = AudioUnitSetProperty (outputUnit,
kAudioDevicePropertyBufferFrameSize,
kAudioUnitScope_Output, 0,
&numFrames, sizeof(numFrames))), home, "AudioUnitSetProperty: kAudioDevicePropertyBufferFrameSize");
FailIf ((result = AudioUnitAddPropertyListener (outputUnit,
kAudioDeviceProcessorOverload,
OverlaodListenerProc, 0)), home, "AudioUnitAddPropertyListener: kAudioDeviceProcessorOverload");
// if we're rendering to the device, then we render at its sample rate
UInt32 theSize;
theSize = sizeof(sampleRate);
FailIf ((result = AudioUnitGetProperty (outputUnit,
kAudioUnitProperty_SampleRate,
kAudioUnitScope_Output, 0,
&sampleRate, &theSize)), home, "AudioUnitGetProperty: kAudioUnitProperty_SampleRate");
} else {
// remove device output node and add generic output
FailIf ((result = AUGraphRemoveNode (inGraph, node)), home, "AUGraphRemoveNode");
desc.componentSubType = kAudioUnitSubType_GenericOutput;
FailIf ((result = AUGraphAddNode (inGraph, &desc, &node)), home, "AUGraphAddNode");
FailIf ((result = AUGraphNodeInfo(inGraph, node, NULL, &unit)), home, "AUGraphNodeInfo");
outputUnit = unit;
outputNode = node;
// we render the output offline at the desired sample rate
FailIf ((result = AudioUnitSetProperty (outputUnit,
kAudioUnitProperty_SampleRate,
kAudioUnitScope_Output, 0,
&sampleRate, sizeof(sampleRate))), home, "AudioUnitSetProperty: kAudioUnitProperty_SampleRate");
}
// ok, lets start the loop again now and do it all...
i = -1;
}
}
else
{
// we only have to do this on the output side
// as the graph's connection mgmt will propogate this down.
if (outputUnit) {
// reconnect up to the output unit if we're offline
if (isOffline && desc.componentType != kAudioUnitType_MusicDevice) {
FailIf ((result = AUGraphConnectNodeInput (inGraph, node, 0, outputNode, 0)), home, "AUGraphConnectNodeInput");
}
FailIf ((result = AudioUnitSetProperty (unit,
kAudioUnitProperty_SampleRate,
kAudioUnitScope_Output, 0,
&sampleRate, sizeof(sampleRate))), home, "AudioUnitSetProperty: kAudioUnitProperty_SampleRate");
}
}
FailIf ((result = AudioUnitSetProperty (unit, kAudioUnitProperty_MaximumFramesPerSlice,
kAudioUnitScope_Global, 0,
&numFrames, sizeof(numFrames))), home, "AudioUnitSetProperty: kAudioUnitProperty_MaximumFramesPerSlice");
}
home:
return result;
}
void MakeSimpleGraph (AUGraph &theGraph, CAAudioUnit &fileAU, CAStreamBasicDescription &fileFormat, AudioFileID audioFile)
{
XThrowIfError (NewAUGraph (&theGraph), "NewAUGraph");
CAComponentDescription cd;
// output node
cd.componentType = kAudioUnitType_Output;
cd.componentSubType = kAudioUnitSubType_DefaultOutput;
cd.componentManufacturer = kAudioUnitManufacturer_Apple;
AUNode outputNode;
XThrowIfError (AUGraphAddNode (theGraph, &cd, &outputNode), "AUGraphAddNode");
// file AU node
AUNode fileNode;
cd.componentType = kAudioUnitType_Generator;
cd.componentSubType = kAudioUnitSubType_AudioFilePlayer;
XThrowIfError (AUGraphAddNode (theGraph, &cd, &fileNode), "AUGraphAddNode");
// connect & setup
XThrowIfError (AUGraphOpen (theGraph), "AUGraphOpen");
// install overload listener to detect when something is wrong
AudioUnit anAU;
XThrowIfError (AUGraphNodeInfo(theGraph, fileNode, NULL, &anAU), "AUGraphNodeInfo");
fileAU = CAAudioUnit (fileNode, anAU);
// prepare the file AU for playback
// set its output channels
XThrowIfError (fileAU.SetNumberChannels (kAudioUnitScope_Output, 0, fileFormat.NumberChannels()), "SetNumberChannels");
// set the output sample rate of the file AU to be the same as the file:
XThrowIfError (fileAU.SetSampleRate (kAudioUnitScope_Output, 0, fileFormat.mSampleRate), "SetSampleRate");
// load in the file
XThrowIfError (fileAU.SetProperty(kAudioUnitProperty_ScheduledFileIDs,
kAudioUnitScope_Global, 0, &audioFile, sizeof(audioFile)), "SetScheduleFile");
XThrowIfError (AUGraphConnectNodeInput (theGraph, fileNode, 0, outputNode, 0), "AUGraphConnectNodeInput");
// AT this point we make sure we have the file player AU initialized
// this also propogates the output format of the AU to the output unit
XThrowIfError (AUGraphInitialize (theGraph), "AUGraphInitialize");
// workaround a race condition in the file player AU
usleep (10 * 1000);
// if we have a surround file, then we should try to tell the output AU what the order of the channels will be
if (fileFormat.NumberChannels() > 2) {
UInt32 layoutSize = 0;
OSStatus err;
XThrowIfError (err = AudioFileGetPropertyInfo (audioFile, kAudioFilePropertyChannelLayout, &layoutSize, NULL),
"kAudioFilePropertyChannelLayout");
if (!err && layoutSize) {
char* layout = new char[layoutSize];
err = AudioFileGetProperty(audioFile, kAudioFilePropertyChannelLayout, &layoutSize, layout);
XThrowIfError (err, "Get Layout From AudioFile");
// ok, now get the output AU and set its layout
XThrowIfError (AUGraphNodeInfo(theGraph, outputNode, NULL, &anAU), "AUGraphNodeInfo");
err = AudioUnitSetProperty (anAU, kAudioUnitProperty_AudioChannelLayout,
kAudioUnitScope_Input, 0, layout, layoutSize);
XThrowIfError (err, "kAudioUnitProperty_AudioChannelLayout");
delete [] layout;
}
}
}
void setupAUGraph(MyMIDIPlayer *player) {
CheckError(NewAUGraph(&player->graph),
"Couldn't open AU Graph");
// generate description that will match our output device (speakers)
AudioComponentDescription outputcd = {0};
outputcd.componentType = kAudioUnitType_Output;
outputcd.componentSubType = kAudioUnitSubType_DefaultOutput;
outputcd.componentManufacturer = kAudioUnitManufacturer_Apple;
// adds a node with above description to the graph
AUNode outputNode;
CheckError(AUGraphAddNode(player->graph, &outputcd, &outputNode),
"AUGraphAddNode[kAudioUnitSubType_DefaultOutput] failed");
AudioComponentDescription instrumentcd = {0};
instrumentcd.componentManufacturer = kAudioUnitManufacturer_Apple;
instrumentcd.componentType = kAudioUnitType_MusicDevice;
instrumentcd.componentSubType = kAudioUnitSubType_Sampler; // changed!
AUNode instrumentNode;
CheckError(AUGraphAddNode(player->graph, &instrumentcd, &instrumentNode),
"AUGraphAddNode[kAudioUnitSubType_DLSSynth] failed");
// opening the graph opens all contained audio units but does not allocate any resources yet
CheckError(AUGraphOpen(player->graph),
"AUGraphOpen failed");
// get the reference to the AudioUnit object for the instrument graph node
CheckError(AUGraphNodeInfo(player->graph, instrumentNode, NULL, &player->instrumentUnit),
"AUGraphNodeInfo failed");
// connect the output source of the instrument AU to the input source of the output node
CheckError(AUGraphConnectNodeInput(player->graph, instrumentNode, 0, outputNode, 0),
"AUGraphConnectNodeInput");
// now initialize the graph (causes resources to be allocated)
CheckError(AUGraphInitialize(player->graph),
"AUGraphInitialize failed");
// configure the AUSampler
// 2nd parameter obviously needs to be a full path on your system, and 3rd param is its length in characters
CFURLRef presetURL = CFURLCreateFromFileSystemRepresentation(
kCFAllocatorDefault,
"/Users/cadamson/Library/Audio/Presets/Apple/AUSampler/ch12-aupreset.aupreset",
77,
false);
// load preset file into a CFDataRef
CFDataRef presetData = NULL;
SInt32 errorCode = noErr;
Boolean gotPresetData =
CFURLCreateDataAndPropertiesFromResource(kCFAllocatorSystemDefault,
presetURL,
&presetData,
NULL,
NULL,
&errorCode);
CheckError(errorCode, "couldn't load .aupreset data");
CheckError(!gotPresetData, "couldn't load .aupreset data");
// convert this into a property list
CFPropertyListFormat presetPlistFormat = {0};
CFErrorRef presetPlistError = NULL;
CFPropertyListRef presetPlist = CFPropertyListCreateWithData(kCFAllocatorSystemDefault,
presetData,
kCFPropertyListImmutable,
&presetPlistFormat,
&presetPlistError);
if (presetPlistError) {
printf ("Couldn't create plist object for .aupreset");
return;
}
// set this plist as the kAudioUnitProperty_ClassInfo on _auSampler
if (presetPlist) {
CheckError(AudioUnitSetProperty(player->instrumentUnit,
kAudioUnitProperty_ClassInfo,
kAudioUnitScope_Global,
0,
&presetPlist,
sizeof(presetPlist)),
"Couldn't set aupreset plist as sampler's class info");
}
}
CoreAudioChkError(AUGraphAddNode(*theGraph, &cd, &outputNode), "AUGraphAddNode Output",);
/* Initialize and add the AU node */
AUNode fileNode;
cd.componentType = kAudioUnitType_Generator;
cd.componentSubType = kAudioUnitSubType_AudioFilePlayer;
CoreAudioChkError(AUGraphAddNode(*theGraph, &cd, &fileNode), "AUGraphAddNode AU",);
/* Make connections */
CoreAudioChkError(AUGraphOpen(*theGraph), "AUGraphOpen",);
/* Set Schedule properties and initialize the graph with the file */
AudioUnit anAU;
memset(&anAU, 0, sizeof(anAU));
CoreAudioChkError(AUGraphNodeInfo(*theGraph, fileNode, NULL, &anAU), "AUGraphNodeInfo",);
*fileAU = anAU;
CoreAudioChkError(AudioUnitSetProperty(*fileAU, kAudioUnitProperty_ScheduledFileIDs,
kAudioUnitScope_Global, 0, &audioFile, sizeof(audioFile)),
"SetScheduleFile",);
CoreAudioChkError(AUGraphConnectNodeInput(*theGraph, fileNode, 0, outputNode, 0), "AUGraphConnectNodeInput",);
CoreAudioChkError(AUGraphInitialize(*theGraph), "AUGraphInitialize",);
}
#elif HAVE_CANBERRA
#include <canberra.h>
#include <canberra-gtk.h>
#endif
void start(int midiChannel, char const*const bankPath)
{
if (auGraph != 0)
return; // don't multiply init
midiChannelInUse = midiChannel;
OSStatus result;
//create the nodes of the graph
AUNode synthNode;
AudioComponentDescription cd;
cd.componentManufacturer = kAudioUnitManufacturer_Apple;
cd.componentFlags = 0;
cd.componentFlagsMask = 0;
require_noerr (result = NewAUGraph (&auGraph), home);
cd.componentType = kAudioUnitType_MusicDevice;
cd.componentSubType = kAudioUnitSubType_DLSSynth;
require_noerr (result = AUGraphAddNode (auGraph, &cd, &synthNode), home);
cd.componentType = kAudioUnitType_Effect;
cd.componentSubType = kAudioUnitSubType_PeakLimiter;
require_noerr (result = AUGraphAddNode (auGraph, &cd, &limiterNode), home);
cd.componentType = kAudioUnitType_Output;
cd.componentSubType = kAudioUnitSubType_DefaultOutput;
require_noerr (result = AUGraphAddNode (auGraph, &cd, &outNode), home);
require_noerr (result = AUGraphOpen (auGraph), home);
require_noerr (result = AUGraphConnectNodeInput(auGraph, synthNode, 0, limiterNode, 0), home);
require_noerr (result = AUGraphConnectNodeInput(auGraph, limiterNode, 0, outNode, 0), home);
// ok we're good to go - get the Synth Unit...
require_noerr (result = AUGraphNodeInfo(auGraph, synthNode, 0, &synthUnit), home);
// if the user supplies a sound bank, we'll set that before we initialize and start playing
if (bankPath)
{
// note: bankpath is a soundfont
CFURLRef url = CFURLCreateFromFileSystemRepresentation(kCFAllocatorDefault, (const UInt8 *)bankPath, strlen(bankPath), false);
if (url) {
require_noerr (result = AudioUnitSetProperty(synthUnit,
kMusicDeviceProperty_SoundBankURL, kAudioUnitScope_Global,
0,
&url, sizeof(url)
), home);
CFRelease(url);
}
}
// ok we're set up to go - initialize and start the graph
require_noerr (result = AUGraphInitialize (auGraph), home);
//set our bank
require_noerr (result = MusicDeviceMIDIEvent(synthUnit,
kMidiMessage_ControlChange << 4 | midiChannelInUse,
kMidiMessage_BankMSBControl, 0,
0/*sample offset*/), home);
require_noerr (result = MusicDeviceMIDIEvent(synthUnit,
kMidiMessage_ProgramChange << 4 | midiChannelInUse,
0/*prog change num*/, 0,
0/*sample offset*/), home);
CAShow(auGraph); // prints out the graph so we can see what it looks like...
require_noerr (result = AUGraphStart(auGraph), home);
return;
home:
shutdown();
}
void WriteOutputFile (const char* outputFilePath,
OSType dataFormat,
Float64 srate,
MusicTimeStamp sequenceLength,
bool shouldPrint,
AUGraph inGraph,
UInt32 numFrames,
MusicPlayer player)
{
// delete existing output file
TestFile (outputFilePath, true);
OSStatus result = 0;
UInt32 size;
CAStreamBasicDescription outputFormat;
outputFormat.mChannelsPerFrame = 2;
outputFormat.mSampleRate = srate;
outputFormat.mFormatID = dataFormat;
AudioFileTypeID destFileType;
CAAudioFileFormats::Instance()->InferFileFormatFromFilename (outputFilePath, destFileType);
if (dataFormat == kAudioFormatLinearPCM) {
outputFormat.mBytesPerPacket = outputFormat.mChannelsPerFrame * 2;
outputFormat.mFramesPerPacket = 1;
outputFormat.mBytesPerFrame = outputFormat.mBytesPerPacket;
outputFormat.mBitsPerChannel = 16;
if (destFileType == kAudioFileWAVEType)
outputFormat.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger
| kLinearPCMFormatFlagIsPacked;
else
outputFormat.mFormatFlags = kLinearPCMFormatFlagIsBigEndian
| kLinearPCMFormatFlagIsSignedInteger
| kLinearPCMFormatFlagIsPacked;
} else {
// use AudioFormat API to fill out the rest.
size = sizeof(outputFormat);
require_noerr (result = AudioFormatGetProperty(kAudioFormatProperty_FormatInfo, 0, NULL, &size, &outputFormat), fail);
}
if (shouldPrint) {
printf ("Writing to file: %s with format:\n* ", outputFilePath);
outputFormat.Print();
}
FSRef parentDir;
CFStringRef destFileName;
require_noerr (result = PosixPathToParentFSRefAndName(outputFilePath, parentDir, destFileName), fail);
ExtAudioFileRef outfile;
result = ExtAudioFileCreateNew (&parentDir, destFileName, destFileType, &outputFormat, NULL, &outfile);
CFRelease (destFileName);
require_noerr (result, fail);
AudioUnit outputUnit;
UInt32 nodeCount;
require_noerr (result = AUGraphGetNodeCount (inGraph, &nodeCount), fail);
for (UInt32 i = 0; i < nodeCount; ++i)
{
AUNode node;
require_noerr (result = AUGraphGetIndNode(inGraph, i, &node), fail);
ComponentDescription desc;
require_noerr (result = AUGraphNodeInfo(inGraph, node, &desc, NULL), fail);
if (desc.componentType == kAudioUnitType_Output)
{
require_noerr (result = AUGraphNodeInfo(inGraph, node, 0, &outputUnit), fail);
break;
}
}
{
CAStreamBasicDescription clientFormat;
size = sizeof(clientFormat);
require_noerr (result = AudioUnitGetProperty (outputUnit,
kAudioUnitProperty_StreamFormat,
kAudioUnitScope_Output, 0,
&clientFormat, &size), fail);
size = sizeof(clientFormat);
require_noerr (result = ExtAudioFileSetProperty(outfile, kExtAudioFileProperty_ClientDataFormat, size, &clientFormat), fail);
{
MusicTimeStamp currentTime;
AUOutputBL outputBuffer (clientFormat, numFrames);
AudioTimeStamp tStamp;
memset (&tStamp, 0, sizeof(AudioTimeStamp));
tStamp.mFlags = kAudioTimeStampSampleTimeValid;
int i = 0;
int numTimesFor10Secs = (int)(10. / (numFrames / srate));
do {
outputBuffer.Prepare();
AudioUnitRenderActionFlags actionFlags = 0;
require_noerr (result = AudioUnitRender (outputUnit, &actionFlags, &tStamp, 0, numFrames, outputBuffer.ABL()), fail);
tStamp.mSampleTime += numFrames;
require_noerr (result = ExtAudioFileWrite(outfile, numFrames, outputBuffer.ABL()), fail);
require_noerr (result = MusicPlayerGetTime (player, ¤tTime), fail);
if (shouldPrint && (++i % numTimesFor10Secs == 0))
printf ("current time: %6.2f beats\n", currentTime);
} while (currentTime < sequenceLength);
}
}
// close
ExtAudioFileDispose(outfile);
return;
fail:
printf ("Problem: %ld\n", result);
exit(1);
}
bool FIOSAudioDevice::InitializeHardware()
{
SIZE_T SampleSize = sizeof(AudioSampleType);
double GraphSampleRate = 44100.0;
if (!SetHardwareSampleRate(GraphSampleRate) || !SetAudioSessionActive(true))
{
HandleError(TEXT("Failed to establish the audio session!"));
return false;
}
// Retrieve the actual hardware sample rate
GetHardwareSampleRate(GraphSampleRate);
// Linear PCM stream format
MixerFormat.mFormatID = kAudioFormatLinearPCM;
MixerFormat.mFormatFlags = kAudioFormatFlagIsSignedInteger | kAudioFormatFlagsNativeEndian | kAudioFormatFlagIsPacked;
MixerFormat.mBytesPerPacket = SampleSize;
MixerFormat.mFramesPerPacket = 1;
MixerFormat.mBytesPerFrame = SampleSize;
MixerFormat.mChannelsPerFrame = 1;
MixerFormat.mBitsPerChannel = 8 * SampleSize;
MixerFormat.mSampleRate = GraphSampleRate;
OSStatus Status = NewAUGraph(&AudioUnitGraph);
if (Status != noErr)
{
HandleError(TEXT("Failed to create audio unit graph!"));
return false;
}
AudioComponentDescription UnitDescription;
// Setup audio output unit
UnitDescription.componentType = kAudioUnitType_Output;
UnitDescription.componentSubType = kAudioUnitSubType_RemoteIO;
UnitDescription.componentManufacturer = kAudioUnitManufacturer_Apple;
UnitDescription.componentFlags = 0;
UnitDescription.componentFlagsMask = 0;
Status = AUGraphAddNode(AudioUnitGraph, &UnitDescription, &OutputNode);
if (Status != noErr)
{
HandleError(TEXT("Failed to initialize audio output node!"), true);
return false;
}
// Setup audo mixer unit
UnitDescription.componentType = kAudioUnitType_Mixer;
UnitDescription.componentSubType = kAudioUnitSubType_AU3DMixerEmbedded;
UnitDescription.componentManufacturer = kAudioUnitManufacturer_Apple;
UnitDescription.componentFlags = 0;
UnitDescription.componentFlagsMask = 0;
Status = AUGraphAddNode(AudioUnitGraph, &UnitDescription, &MixerNode);
if (Status != noErr)
{
HandleError(TEXT("Failed to initialize audio mixer node!"), true);
return false;
}
Status = AUGraphOpen(AudioUnitGraph);
if (Status != noErr)
{
HandleError(TEXT("Failed to open audio unit graph"), true);
return false;
}
Status = AUGraphNodeInfo(AudioUnitGraph, OutputNode, NULL, &OutputUnit);
if (Status != noErr)
{
HandleError(TEXT("Failed to retrieve output unit reference!"), true);
return false;
}
Status = AUGraphNodeInfo(AudioUnitGraph, MixerNode, NULL, &MixerUnit);
if (Status != noErr)
{
HandleError(TEXT("Failed to retrieve mixer unit reference!"), true);
return false;
}
uint32 BusCount = MaxChannels * CHANNELS_PER_BUS;
Status = AudioUnitSetProperty(MixerUnit,
kAudioUnitProperty_ElementCount,
kAudioUnitScope_Input,
0,
&BusCount,
sizeof(BusCount));
if (Status != noErr)
{
HandleError(TEXT("Failed to set kAudioUnitProperty_ElementCount for audio mixer unit!"), true);
return false;
}
// Initialize sound source early on, allowing for render callback hookups
InitSoundSources();
// Setup the mixer unit sample rate
Status = AudioUnitSetProperty(MixerUnit,
kAudioUnitProperty_SampleRate,
kAudioUnitScope_Output,
0,
&GraphSampleRate,
sizeof(GraphSampleRate));
if (Status != noErr)
{
HandleError(TEXT("Failed to set kAudioUnitProperty_SampleRate for audio mixer unit!"), true);
return false;
}
// Connect mixer node output to output node input
Status = AUGraphConnectNodeInput(AudioUnitGraph, MixerNode, 0, OutputNode, 0);
if (Status != noErr)
{
HandleError(TEXT("Failed to connect mixer node to output node!"), true);
return false;
}
// Initialize and start the audio unit graph
Status = AUGraphInitialize(AudioUnitGraph);
if (Status == noErr)
{
Status = AUGraphStart(AudioUnitGraph);
}
if (Status != noErr)
{
HandleError(TEXT("Failed to start audio graph!"), true);
return false;
}
return true;
}
void CreateMyAUGraph(MyAUGraphPlayer *player)
{
// create a new AUGraph
CheckError(NewAUGraph(&player->graph),
"NewAUGraph failed");
// generate description that will match our output device (speakers)
AudioComponentDescription outputcd = {0};
outputcd.componentType = kAudioUnitType_Output;
outputcd.componentSubType = kAudioUnitSubType_DefaultOutput;
outputcd.componentManufacturer = kAudioUnitManufacturer_Apple;
// adds a node with above description to the graph
AUNode outputNode;
CheckError(AUGraphAddNode(player->graph, &outputcd, &outputNode),
"AUGraphAddNode[kAudioUnitSubType_DefaultOutput] failed");
// generate description that will match a generator AU of type: speech synthesizer
AudioComponentDescription speechcd = {0};
speechcd.componentType = kAudioUnitType_Generator;
speechcd.componentSubType = kAudioUnitSubType_SpeechSynthesis;
speechcd.componentManufacturer = kAudioUnitManufacturer_Apple;
// adds a node with above description to the graph
AUNode speechNode;
CheckError(AUGraphAddNode(player->graph, &speechcd, &speechNode),
"AUGraphAddNode[kAudioUnitSubType_SpeechSynthesis] failed");
// opening the graph opens all contained audio units but does not allocate any resources yet
CheckError(AUGraphOpen(player->graph),
"AUGraphOpen failed");
// get the reference to the AudioUnit object for the speech synthesis graph node
CheckError(AUGraphNodeInfo(player->graph, speechNode, NULL, &player->speechAU),
"AUGraphNodeInfo failed");
// // debug - get the asbd
// UInt32 propSize = sizeof (AudioStreamBasicDescription);
// CheckError(AudioUnitGetProperty(player->speechAU,
// kAudioUnitProperty_StreamFormat,
// kAudioUnitScope_Output,
// 0,
// &player->streamFormat,
// &propSize),
// "Couldn't get ASBD");
#ifdef PART_II
//
// FUN! re-route the speech thru a reverb effect before sending to speakers
//
// generate description that will match out reverb effect
AudioComponentDescription reverbcd = {0};
reverbcd.componentType = kAudioUnitType_Effect;
reverbcd.componentSubType = kAudioUnitSubType_MatrixReverb;
reverbcd.componentManufacturer = kAudioUnitManufacturer_Apple;
// adds a node with above description to the graph
AUNode reverbNode;
CheckError(AUGraphAddNode(player->graph, &reverbcd, &reverbNode),
"AUGraphAddNode[kAudioUnitSubType_MatrixReverb] failed");
// connect the output source of the speech synthesizer AU to the input source of the reverb node
CheckError(AUGraphConnectNodeInput(player->graph, speechNode, 0, reverbNode, 0),
"AUGraphConnectNodeInput");
// connect the output source of the reverb AU to the input source of the output node
CheckError(AUGraphConnectNodeInput(player->graph, reverbNode, 0, outputNode, 0),
"AUGraphConnectNodeInput");
// get the reference to the AudioUnit object for the reverb graph node
AudioUnit reverbUnit;
CheckError(AUGraphNodeInfo(player->graph, reverbNode, NULL, &reverbUnit),
"AUGraphNodeInfo failed");
/*
enum {
kReverbRoomType_SmallRoom = 0,
kReverbRoomType_MediumRoom = 1,
kReverbRoomType_LargeRoom = 2,
kReverbRoomType_MediumHall = 3,
kReverbRoomType_LargeHall = 4,
kReverbRoomType_Plate = 5,
kReverbRoomType_MediumChamber = 6,
kReverbRoomType_LargeChamber = 7,
kReverbRoomType_Cathedral = 8,
kReverbRoomType_LargeRoom2 = 9,
kReverbRoomType_MediumHall2 = 10,
kReverbRoomType_MediumHall3 = 11,
kReverbRoomType_LargeHall2 = 12
};
*/
// now initialize the graph (causes resources to be allocated)
CheckError(AUGraphInitialize(player->graph),
"AUGraphInitialize failed");
// set the reverb preset for room size
// UInt32 roomType = kReverbRoomType_SmallRoom;
// UInt32 roomType = kReverbRoomType_MediumRoom;
UInt32 roomType = kReverbRoomType_LargeHall;
// UInt32 roomType = kReverbRoomType_Cathedral;
CheckError(AudioUnitSetProperty(reverbUnit, kAudioUnitProperty_ReverbRoomType,
kAudioUnitScope_Global, 0, &roomType, sizeof(UInt32)),
"AudioUnitSetProperty[kAudioUnitProperty_ReverbRoomType] failed");
#else
// connect the output source of the speech synthesis AU to the input source of the output node
CheckError(AUGraphConnectNodeInput(player->graph, speechNode, 0, outputNode, 0),
"AUGraphConnectNodeInput");
// now initialize the graph (causes resources to be allocated)
CheckError(AUGraphInitialize(player->graph),
"AUGraphInitialize failed");
#endif
CAShow(player->graph);
}
int main(int argc, char *argv[])
{
AUGraph audioGraph;
NewAUGraph(&audioGraph);
AudioComponentDescription cd;
AUNode outputNode;
AudioUnit outputUnit;
cd.componentManufacturer = kAudioUnitManufacturer_Apple;
cd.componentFlags = 0;
cd.componentFlagsMask = 0;
cd.componentType = kAudioUnitType_Output;
cd.componentSubType = kAudioUnitSubType_DefaultOutput;
AUGraphAddNode(audioGraph, &cd, &outputNode);
AUGraphNodeInfo(audioGraph, outputNode, &cd, &outputUnit);
AUNode mixerNode;
AudioUnit mixerUnit;
cd.componentManufacturer = kAudioUnitManufacturer_Apple;
cd.componentFlags = 0;
cd.componentFlagsMask = 0;
cd.componentType = kAudioUnitType_Mixer;
cd.componentSubType = kAudioUnitSubType_StereoMixer;
AUGraphAddNode(audioGraph, &cd, &mixerNode);
AUGraphNodeInfo(audioGraph, mixerNode, &cd, &mixerUnit);
AUGraphConnectNodeInput(audioGraph, mixerNode, 0, outputNode, 0);
AUGraphOpen(audioGraph);
AUGraphInitialize(audioGraph);
AUGraphStart(audioGraph);
AUNode synthNode;
AudioUnit synthUnit;
cd.componentManufacturer = kAudioUnitManufacturer_Apple;
cd.componentFlags = 0;
cd.componentFlagsMask = 0;
cd.componentType = kAudioUnitType_MusicDevice;
cd.componentSubType = kAudioUnitSubType_DLSSynth;
AUGraphAddNode(audioGraph, &cd, &synthNode);
AUGraphNodeInfo(audioGraph, synthNode, &cd, &synthUnit);
AUGraphConnectNodeInput(audioGraph, synthNode, 0, mixerNode, 0);
AUGraphUpdate(audioGraph, NULL);
CAShow(audioGraph);
MusicDeviceMIDIEvent(synthUnit, 0x90, 60, 127, 0);
sleep(1);
MusicDeviceMIDIEvent(synthUnit, 0x90, 62, 127, 0);
sleep(1);
MusicDeviceMIDIEvent(synthUnit, 0x90, 64, 127, 0);
sleep(1);
sleep(5);
return(0);
}
/**
* Initializes the audio device and creates sources.
*
* @return true if initialization was successful, false otherwise
*/
bool FCoreAudioDevice::InitializeHardware()
{
if (IsRunningDedicatedServer())
{
return false;
}
// Load ogg and vorbis dlls if they haven't been loaded yet
LoadVorbisLibraries();
InverseTransform = FMatrix::Identity;
for( SInt32 Index = 0; Index < MAX_AUDIOCHANNELS; ++Index )
{
Mixer3DInputStatus[ Index ] = false;
}
for( SInt32 Index = 0; Index < MAX_MULTICHANNEL_AUDIOCHANNELS; ++Index )
{
MatrixMixerInputStatus[ Index ] = false;
}
// Make sure the output audio device exists
AudioDeviceID HALDevice;
UInt32 Size = sizeof( AudioDeviceID );
AudioObjectPropertyAddress PropertyAddress;
PropertyAddress.mSelector = kAudioHardwarePropertyDefaultOutputDevice;
PropertyAddress.mScope = kAudioObjectPropertyScopeGlobal;
PropertyAddress.mElement = kAudioObjectPropertyElementMaster;
OSStatus Status = AudioObjectGetPropertyData( kAudioObjectSystemObject, &PropertyAddress, 0, NULL, &Size, &HALDevice );
if( Status != noErr )
{
UE_LOG(LogInit, Log, TEXT( "No audio devices found!" ) );
return false;
}
Status = NewAUGraph( &AudioUnitGraph );
if( Status != noErr )
{
UE_LOG(LogInit, Log, TEXT( "Failed to create audio unit graph!" ) );
return false;
}
AudioComponentDescription Desc;
Desc.componentFlags = 0;
Desc.componentFlagsMask = 0;
Desc.componentType = kAudioUnitType_Output;
Desc.componentSubType = kAudioUnitSubType_DefaultOutput;
Desc.componentManufacturer = kAudioUnitManufacturer_Apple;
Status = AUGraphAddNode( AudioUnitGraph, &Desc, &OutputNode );
if( Status == noErr )
{
Status = AUGraphOpen( AudioUnitGraph );
if( Status == noErr )
{
Status = AUGraphNodeInfo( AudioUnitGraph, OutputNode, NULL, &OutputUnit );
if( Status == noErr )
{
Status = AudioUnitInitialize( OutputUnit );
}
}
}
if( Status != noErr )
{
UE_LOG(LogInit, Log, TEXT( "Failed to initialize audio output unit!" ) );
Teardown();
return false;
}
Desc.componentFlags = 0;
Desc.componentFlagsMask = 0;
Desc.componentType = kAudioUnitType_Mixer;
Desc.componentSubType = kAudioUnitSubType_3DMixer;
Desc.componentManufacturer = kAudioUnitManufacturer_Apple;
Status = AUGraphAddNode( AudioUnitGraph, &Desc, &Mixer3DNode );
if( Status == noErr )
{
Status = AUGraphNodeInfo( AudioUnitGraph, Mixer3DNode, NULL, &Mixer3DUnit );
if( Status == noErr )
{
Status = AudioUnitInitialize( Mixer3DUnit );
}
}
if( Status != noErr )
{
UE_LOG(LogInit, Log, TEXT( "Failed to initialize audio 3D mixer unit!" ) );
Teardown();
return false;
}
Desc.componentFlags = 0;
Desc.componentFlagsMask = 0;
Desc.componentType = kAudioUnitType_Mixer;
Desc.componentSubType = kAudioUnitSubType_MatrixMixer;
Desc.componentManufacturer = kAudioUnitManufacturer_Apple;
Status = AUGraphAddNode( AudioUnitGraph, &Desc, &MatrixMixerNode );
if( Status == noErr )
{
Status = AUGraphNodeInfo( AudioUnitGraph, MatrixMixerNode, NULL, &MatrixMixerUnit );
// Set number of buses for input
uint32 NumBuses = MAX_MULTICHANNEL_AUDIOCHANNELS;
Size = sizeof( NumBuses );
Status = AudioUnitSetProperty( MatrixMixerUnit, kAudioUnitProperty_ElementCount, kAudioUnitScope_Input, 0, &NumBuses, Size );
if( Status == noErr )
{
// Set number fo buses for output
NumBuses = 1;
Status = AudioUnitSetProperty( MatrixMixerUnit, kAudioUnitProperty_ElementCount, kAudioUnitScope_Output, 0, &NumBuses, Size );
}
if( Status != noErr )
{
UE_LOG(LogInit, Log, TEXT( "Failed to setup audio matrix mixer unit!" ) );
Teardown();
return false;
}
// Get default input stream format
Size = sizeof( AudioStreamBasicDescription );
Status = AudioUnitGetProperty( MatrixMixerUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, 0, &MatrixMixerInputFormat, &Size );
// Set output stream format to SPEAKER_COUT (6 channels)
MatrixMixerInputFormat.mChannelsPerFrame = SPEAKER_COUNT;
MatrixMixerInputFormat.mFramesPerPacket = 1;
MatrixMixerInputFormat.mBytesPerPacket = MatrixMixerInputFormat.mBytesPerFrame;
MatrixMixerInputFormat.mFormatFlags |= kAudioFormatFlagIsNonInterleaved;
for( int32 Index = 0; Index < MAX_MULTICHANNEL_AUDIOCHANNELS; Index++ )
{
Status = AudioUnitSetProperty( MatrixMixerUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, Index, &MatrixMixerInputFormat, Size );
if( Status != noErr )
{
UE_LOG(LogInit, Log, TEXT( "Failed to setup audio matrix mixer unit input format!" ) );
Teardown();
return false;
}
}
// Set output stream format
Size = sizeof( AudioStreamBasicDescription );
Status = AudioUnitGetProperty( MatrixMixerUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Output, 0, &MatrixMixerOutputFormat, &Size );
if( Status != noErr )
{
UE_LOG(LogInit, Log, TEXT( "Failed to setup audio matrix mixer unit output format!" ) );
Teardown();
return false;
}
// Initialize Matrix Mixer unit
Status = AudioUnitInitialize( MatrixMixerUnit );
if( Status != noErr )
{
UE_LOG(LogInit, Log, TEXT( "Failed to initialize audio matrix mixer unit!" ) );
Teardown();
return false;
}
// Enable Output
AudioUnitSetParameter( MatrixMixerUnit, kMatrixMixerParam_Enable, kAudioUnitScope_Output, 0, 1.0, 0 );
// Set Output volume
AudioUnitSetParameter( MatrixMixerUnit, kMatrixMixerParam_Volume, kAudioUnitScope_Output, 0, 1.0, 0 );
AudioUnitSetParameter( MatrixMixerUnit, kMatrixMixerParam_Volume, kAudioUnitScope_Output, 1, 1.0, 0 );
// Set Master volume
AudioUnitSetParameter( MatrixMixerUnit, kMatrixMixerParam_Volume, kAudioUnitScope_Global, 0xFFFFFFFF, 1.0, 0 );
}
Size = sizeof( AudioStreamBasicDescription );
Status = AudioUnitGetProperty( Mixer3DUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, 0, &Mixer3DFormat, &Size );
if( Status == noErr )
{
// Connect 3D Mixer to Output node
Status = AUGraphConnectNodeInput( AudioUnitGraph, Mixer3DNode, 0, OutputNode, 0 );
}
if( Status != noErr )
{
UE_LOG(LogInit, Log, TEXT( "Failed to start audio graph!" ) );
Teardown();
return false;
}
// Connect Matrix Mixer to 3D Mixer node
Status = AUGraphConnectNodeInput( AudioUnitGraph, MatrixMixerNode, 0, Mixer3DNode, 0 );
Mixer3DInputStatus[0] = true;
if( Status != noErr )
{
UE_LOG(LogInit, Log, TEXT( "Failed to start audio graph!" ) );
Teardown();
return false;
}
Status = AUGraphInitialize( AudioUnitGraph );
if( Status == noErr )
{
Status = AUGraphStart( AudioUnitGraph );
}
if( Status != noErr )
{
UE_LOG(LogInit, Log, TEXT( "Failed to start audio graph!" ) );
Teardown();
return false;
}
return true;
}
OutputImplAudioUnit::OutputImplAudioUnit()
: mAvailableBuses(), OutputImpl()
{
OSStatus err = noErr;
NewAUGraph( &mGraph );
AudioComponentDescription cd;
cd.componentManufacturer = kAudioUnitManufacturer_Apple;
cd.componentFlags = 0;
cd.componentFlagsMask = 0;
//output node
cd.componentType = kAudioUnitType_Output;
cd.componentSubType = CINDER_AUDIOUNIT_OUTPUT_TYPE;
//connect & setup
AUGraphOpen( mGraph );
//initialize component - todo add error checking
if( AUGraphAddNode( mGraph, &cd, &mOutputNode ) != noErr ) {
std::cout << "Error 1!" << std::endl;
}
if( AUGraphNodeInfo( mGraph, mOutputNode, NULL, &mOutputUnit ) != noErr ) {
std::cout << "Error 2!" << std::endl;
}
UInt32 dsize;
#if defined( CINDER_MAC )
//get default output device id and set it as the outdevice for the output unit, unnessary on the iphone
dsize = sizeof( AudioDeviceID );
err = AudioHardwareGetProperty( kAudioHardwarePropertyDefaultOutputDevice, &dsize, &mOutputDeviceId );
if( err != noErr ) {
std::cout << "Error getting default output device" << std::endl;
}
err = AudioUnitSetProperty( mOutputUnit, kAudioOutputUnitProperty_CurrentDevice, kAudioUnitScope_Global, 0, &mOutputDeviceId, sizeof( mOutputDeviceId ) );
if( err != noErr ) {
std::cout << "Error setting current output device" << std::endl;
}
#endif
//Tell the output unit not to reset timestamps
//Otherwise sample rate changes will cause sync los
UInt32 startAtZero = 0;
err = AudioUnitSetProperty( mOutputUnit, kAudioOutputUnitProperty_StartTimestampsAtZero, kAudioUnitScope_Global, 0, &startAtZero, sizeof( startAtZero ) );
if( err != noErr ) {
std::cout << "Error telling output unit not to reset timestamps" << std::endl;
}
//stereo mixer node
cd.componentType = kAudioUnitType_Mixer;
cd.componentSubType = kAudioUnitSubType_MultiChannelMixer;//kAudioUnitSubType_StereoMixer;
AUGraphAddNode( mGraph, &cd, &mMixerNode );
//setup mixer AU
err = AUGraphNodeInfo( mGraph, mMixerNode, NULL, &mMixerUnit );
if( err ) {
std::cout << "Error 4" << std::endl;
}
//TODO: cleanup error checking in all of this
//check the element count, if it's less than our default element count, increase, or else just leave it alone
err = AudioUnitGetProperty( mMixerUnit, kAudioUnitProperty_ElementCount, kAudioUnitScope_Input, 0, &mNumberBuses, &dsize );
if( err ) {
std::cout << "Error getting mixer unit input elements" << std::endl;
}
if( mNumberBuses < sDefaultNumberBuses ) {
mNumberBuses = sDefaultNumberBuses;
err = AudioUnitSetProperty( mMixerUnit, kAudioUnitProperty_ElementCount, kAudioUnitScope_Input, 0, &mNumberBuses, sizeof(mNumberBuses) );
if( err ) {
std::cout << "Error setting mixer unit input elements" << std::endl;
}
}
for( uint32_t i = 1; i <= mNumberBuses; i++ ) {
mAvailableBuses.push( mNumberBuses - i );
}
AUGraphConnectNodeInput( mGraph, mMixerNode, 0, mOutputNode, 0 );
AudioStreamBasicDescription outDesc;
UInt32 size = sizeof( outDesc );
err = AudioUnitGetProperty( mOutputUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Output, 0, &outDesc, &size );
if( err ) {
std::cout << "Error getting output unit stream format" << std::endl;
}
AUGraphInitialize( mGraph );
//Do all StreamFormat getting/setting after initialization,
//since that's when the output unit is actually hooked up to the hardware
dsize = sizeof( AudioStreamBasicDescription );
mPlayerDescription = new AudioStreamBasicDescription;
err = AudioUnitGetProperty( mOutputUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, 0, mPlayerDescription, &dsize );
if( err ) {
std::cout << "Error reading output unit stream format" << std::endl;
}
err = AudioUnitSetProperty( mMixerUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Output, 0, mPlayerDescription, dsize );
if( err ) {
std::cout << "Error setting mixer unit output stream format" << std::endl;
}
err = AudioUnitSetProperty( mOutputUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, 0, mPlayerDescription, dsize );
if( err ) {
std::cout << "Error setting output unit input stream format" << std::endl;
}
//race condition work around??
usleep( 10 * 1000 );
//TODO: tell the output AU about the order of the channels if there are more than 2
// turn metering ON
//UInt32 data = 1;
//AudioUnitSetProperty( mMixerUnit, kAudioUnitProperty_MeteringMode, kAudioUnitScope_Global, 0, &data, sizeof(data) );
err = AudioUnitSetParameter( mMixerUnit, kMultiChannelMixerParam_Volume, kAudioUnitScope_Output, 0, CINDER_DEFAULT_VOLUME, 0 );
if( err ) {
std::cout << "error setting default volume" << std::cout;
}
err = AUGraphStart( mGraph );
if( err ) {
//throw
}
}
void CreateMyAUGraph(MyAUGraphPlayer *player)
{
// create a new AUGraph
CheckError(NewAUGraph(&player->graph),
"NewAUGraph failed");
// generate description that will match default output
// ComponentDescription outputcd = {0};
// outputcd.componentType = kAudioUnitType_Output;
// outputcd.componentSubType = kAudioUnitSubType_DefaultOutput;
// outputcd.componentManufacturer = kAudioUnitManufacturer_Apple;
//
// Component comp = FindNextComponent(NULL, &outputcd);
// if (comp == NULL) {
// printf ("can't get output unit"); exit (-1);
// }
AudioComponentDescription outputcd = {0};
outputcd.componentType = kAudioUnitType_Output;
outputcd.componentSubType = kAudioUnitSubType_DefaultOutput;
outputcd.componentManufacturer = kAudioUnitManufacturer_Apple;
AudioComponent comp = AudioComponentFindNext(NULL, &outputcd);
if (comp == NULL) {
printf ("can't get output unit"); exit (-1);
}
// adds a node with above description to the graph
AUNode outputNode;
CheckError(AUGraphAddNode(player->graph, &outputcd, &outputNode),
"AUGraphAddNode[kAudioUnitSubType_DefaultOutput] failed");
#ifdef PART_II
// add a mixer to the graph,
AudioComponentDescription mixercd = {0};
mixercd.componentType = kAudioUnitType_Mixer;
mixercd.componentSubType = kAudioUnitSubType_StereoMixer; // doesn't work: kAudioUnitSubType_MatrixMixer
mixercd.componentManufacturer = kAudioUnitManufacturer_Apple;
AUNode mixerNode;
CheckError(AUGraphAddNode(player->graph, &mixercd, &mixerNode),
"AUGraphAddNode[kAudioUnitSubType_StereoMixer] failed");
// adds a node with above description to the graph
AudioComponentDescription speechcd = {0};
speechcd.componentType = kAudioUnitType_Generator;
speechcd.componentSubType = kAudioUnitSubType_SpeechSynthesis;
speechcd.componentManufacturer = kAudioUnitManufacturer_Apple;
AUNode speechNode;
CheckError(AUGraphAddNode(player->graph, &speechcd, &speechNode),
"AUGraphAddNode[kAudioUnitSubType_AudioFilePlayer] failed");
// opening the graph opens all contained audio units but does not allocate any resources yet
CheckError(AUGraphOpen(player->graph),
"AUGraphOpen failed");
// get the reference to the AudioUnit objects for the various nodes
CheckError(AUGraphNodeInfo(player->graph, outputNode, NULL, &player->outputUnit),
"AUGraphNodeInfo failed");
CheckError(AUGraphNodeInfo(player->graph, speechNode, NULL, &player->speechUnit),
"AUGraphNodeInfo failed");
AudioUnit mixerUnit;
CheckError(AUGraphNodeInfo(player->graph, mixerNode, NULL, &mixerUnit),
"AUGraphNodeInfo failed");
// set ASBDs here
UInt32 propertySize = sizeof (AudioStreamBasicDescription);
CheckError(AudioUnitSetProperty(player->outputUnit,
kAudioUnitProperty_StreamFormat,
kAudioUnitScope_Input,
0,
&player->streamFormat,
propertySize),
"Couldn't set stream format on output unit");
// problem: badComponentInstance (-2147450879)
CheckError(AudioUnitSetProperty(mixerUnit,
kAudioUnitProperty_StreamFormat,
kAudioUnitScope_Input,
0,
&player->streamFormat,
propertySize),
"Couldn't set stream format on mixer unit bus 0");
CheckError(AudioUnitSetProperty(mixerUnit,
kAudioUnitProperty_StreamFormat,
kAudioUnitScope_Input,
1,
&player->streamFormat,
propertySize),
"Couldn't set stream format on mixer unit bus 1");
// connections
// mixer output scope / bus 0 to outputUnit input scope / bus 0
// mixer input scope / bus 0 to render callback (from ringbuffer, which in turn is from inputUnit)
// mixer input scope / bus 1 to speech unit output scope / bus 0
CheckError(AUGraphConnectNodeInput(player->graph, mixerNode, 0, outputNode, 0),
"Couldn't connect mixer output(0) to outputNode (0)");
CheckError(AUGraphConnectNodeInput(player->graph, speechNode, 0, mixerNode, 1),
"Couldn't connect speech synth unit output (0) to mixer input (1)");
AURenderCallbackStruct callbackStruct;
callbackStruct.inputProc = GraphRenderProc;
callbackStruct.inputProcRefCon = player;
CheckError(AudioUnitSetProperty(mixerUnit,
kAudioUnitProperty_SetRenderCallback,
kAudioUnitScope_Global,
0,
&callbackStruct,
sizeof(callbackStruct)),
"Couldn't set render callback on mixer unit");
#else
// opening the graph opens all contained audio units but does not allocate any resources yet
CheckError(AUGraphOpen(player->graph),
"AUGraphOpen failed");
// get the reference to the AudioUnit object for the output graph node
CheckError(AUGraphNodeInfo(player->graph, outputNode, NULL, &player->outputUnit),
"AUGraphNodeInfo failed");
// set the stream format on the output unit's input scope
UInt32 propertySize = sizeof (AudioStreamBasicDescription);
CheckError(AudioUnitSetProperty(player->outputUnit,
kAudioUnitProperty_StreamFormat,
kAudioUnitScope_Input,
0,
&player->streamFormat,
propertySize),
"Couldn't set stream format on output unit");
AURenderCallbackStruct callbackStruct;
callbackStruct.inputProc = GraphRenderProc;
callbackStruct.inputProcRefCon = player;
CheckError(AudioUnitSetProperty(player->outputUnit,
kAudioUnitProperty_SetRenderCallback,
kAudioUnitScope_Global,
0,
&callbackStruct,
sizeof(callbackStruct)),
"Couldn't set render callback on output unit");
#endif
// now initialize the graph (causes resources to be allocated)
CheckError(AUGraphInitialize(player->graph),
"AUGraphInitialize failed");
player->firstOutputSampleTime = -1;
printf ("Bottom of CreateSimpleAUGraph()\n");
}
int MidiDriver_CORE::open() {
OSStatus err = 0;
if (isOpen())
return MERR_ALREADY_OPEN;
// Open the Music Device.
RequireNoErr(NewAUGraph(&_auGraph));
AUNode outputNode, synthNode;
#if USE_DEPRECATED_COREAUDIO_API
ComponentDescription desc;
#else
AudioComponentDescription desc;
#endif
// The default output device
desc.componentType = kAudioUnitType_Output;
desc.componentSubType = kAudioUnitSubType_DefaultOutput;
desc.componentManufacturer = kAudioUnitManufacturer_Apple;
desc.componentFlags = 0;
desc.componentFlagsMask = 0;
#if USE_DEPRECATED_COREAUDIO_API
RequireNoErr(AUGraphNewNode(_auGraph, &desc, 0, NULL, &outputNode));
#else
RequireNoErr(AUGraphAddNode(_auGraph, &desc, &outputNode));
#endif
// The built-in default (softsynth) music device
desc.componentType = kAudioUnitType_MusicDevice;
desc.componentSubType = kAudioUnitSubType_DLSSynth;
desc.componentManufacturer = kAudioUnitManufacturer_Apple;
#if USE_DEPRECATED_COREAUDIO_API
RequireNoErr(AUGraphNewNode(_auGraph, &desc, 0, NULL, &synthNode));
#else
RequireNoErr(AUGraphAddNode(_auGraph, &desc, &synthNode));
#endif
// Connect the softsynth to the default output
RequireNoErr(AUGraphConnectNodeInput(_auGraph, synthNode, 0, outputNode, 0));
// Open and initialize the whole graph
RequireNoErr(AUGraphOpen(_auGraph));
RequireNoErr(AUGraphInitialize(_auGraph));
// Get the music device from the graph.
#if USE_DEPRECATED_COREAUDIO_API
RequireNoErr(AUGraphGetNodeInfo(_auGraph, synthNode, NULL, NULL, NULL, &_synth));
#else
RequireNoErr(AUGraphNodeInfo(_auGraph, synthNode, NULL, &_synth));
#endif
// Load custom soundfont, if specified
if (ConfMan.hasKey("soundfont")) {
FSRef fsref;
FSSpec fsSpec;
const char *soundfont = ConfMan.get("soundfont").c_str();
err = FSPathMakeRef ((const byte *)soundfont, &fsref, NULL);
if (err == noErr) {
err = FSGetCatalogInfo (&fsref, kFSCatInfoNone, NULL, NULL, &fsSpec, NULL);
}
if (err == noErr) {
// TODO: We should really check here whether the file contains an
// actual soundfont...
err = AudioUnitSetProperty (
_synth,
kMusicDeviceProperty_SoundBankFSSpec, kAudioUnitScope_Global,
0,
&fsSpec, sizeof(fsSpec)
);
}
if (err != noErr)
warning("Failed loading custom sound font '%s' (error %ld)\n", soundfont, (long)err);
}
#ifdef COREAUDIO_DISABLE_REVERB
// Disable reverb mode, as that sucks up a lot of CPU power, which can
// be painful on low end machines.
// TODO: Make this customizable via a config key?
UInt32 usesReverb = 0;
AudioUnitSetProperty (_synth, kMusicDeviceProperty_UsesInternalReverb,
kAudioUnitScope_Global, 0, &usesReverb, sizeof (usesReverb));
#endif
// Finally: Start the graph!
RequireNoErr(AUGraphStart(_auGraph));
return 0;
bail:
if (_auGraph) {
AUGraphStop(_auGraph);
DisposeAUGraph(_auGraph);
_auGraph = 0;
}
return MERR_CANNOT_CONNECT;
}
void WriteOutputFile (const char* outputFilePath,
OSType dataFormat,
Float64 srate,
MusicTimeStamp sequenceLength,
bool shouldPrint,
AUGraph inGraph,
UInt32 numFrames,
MusicPlayer player)
{
OSStatus result = 0;
UInt32 size;
CAStreamBasicDescription outputFormat;
outputFormat.mChannelsPerFrame = 2;
outputFormat.mSampleRate = srate;
outputFormat.mFormatID = dataFormat;
AudioFileTypeID destFileType;
CAAudioFileFormats::Instance()->InferFileFormatFromFilename (outputFilePath, destFileType);
if (dataFormat == kAudioFormatLinearPCM) {
outputFormat.mBytesPerPacket = outputFormat.mChannelsPerFrame * 2;
outputFormat.mFramesPerPacket = 1;
outputFormat.mBytesPerFrame = outputFormat.mBytesPerPacket;
outputFormat.mBitsPerChannel = 16;
if (destFileType == kAudioFileWAVEType)
outputFormat.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger
| kLinearPCMFormatFlagIsPacked;
else
outputFormat.mFormatFlags = kLinearPCMFormatFlagIsBigEndian
| kLinearPCMFormatFlagIsSignedInteger
| kLinearPCMFormatFlagIsPacked;
} else {
// use AudioFormat API to fill out the rest.
size = sizeof(outputFormat);
FailIf ((result = AudioFormatGetProperty(kAudioFormatProperty_FormatInfo, 0, NULL, &size, &outputFormat)), fail, "");
}
if (shouldPrint) {
printf ("Writing to file: %s with format:\n* ", outputFilePath);
outputFormat.Print();
}
CFURLRef url; url = CFURLCreateFromFileSystemRepresentation(NULL, (const UInt8*)outputFilePath, strlen(outputFilePath), false);
// create output file, delete existing file
ExtAudioFileRef outfile;
result = ExtAudioFileCreateWithURL(url, destFileType, &outputFormat, NULL, kAudioFileFlags_EraseFile, &outfile);
if (url) CFRelease (url);
FailIf (result, fail, "ExtAudioFileCreateWithURL");
AudioUnit outputUnit; outputUnit = NULL;
UInt32 nodeCount;
FailIf ((result = AUGraphGetNodeCount (inGraph, &nodeCount)), fail, "AUGraphGetNodeCount");
for (UInt32 i = 0; i < nodeCount; ++i)
{
AUNode node;
FailIf ((result = AUGraphGetIndNode(inGraph, i, &node)), fail, "AUGraphGetIndNode");
AudioComponentDescription desc;
FailIf ((result = AUGraphNodeInfo(inGraph, node, &desc, NULL)), fail, "AUGraphNodeInfo");
if (desc.componentType == kAudioUnitType_Output)
{
FailIf ((result = AUGraphNodeInfo(inGraph, node, 0, &outputUnit)), fail, "AUGraphNodeInfo");
break;
}
}
FailIf ((result = (outputUnit == NULL)), fail, "outputUnit == NULL");
{
CAStreamBasicDescription clientFormat = CAStreamBasicDescription();
size = sizeof(clientFormat);
FailIf ((result = AudioUnitGetProperty (outputUnit,
kAudioUnitProperty_StreamFormat,
kAudioUnitScope_Output, 0,
&clientFormat, &size)), fail, "AudioUnitGetProperty: kAudioUnitProperty_StreamFormat");
size = sizeof(clientFormat);
FailIf ((result = ExtAudioFileSetProperty(outfile, kExtAudioFileProperty_ClientDataFormat, size, &clientFormat)), fail, "ExtAudioFileSetProperty: kExtAudioFileProperty_ClientDataFormat");
{
MusicTimeStamp currentTime;
AUOutputBL outputBuffer (clientFormat, numFrames);
AudioTimeStamp tStamp;
memset (&tStamp, 0, sizeof(AudioTimeStamp));
tStamp.mFlags = kAudioTimeStampSampleTimeValid;
int i = 0;
int numTimesFor10Secs = (int)(10. / (numFrames / srate));
do {
outputBuffer.Prepare();
AudioUnitRenderActionFlags actionFlags = 0;
FailIf ((result = AudioUnitRender (outputUnit, &actionFlags, &tStamp, 0, numFrames, outputBuffer.ABL())), fail, "AudioUnitRender");
tStamp.mSampleTime += numFrames;
FailIf ((result = ExtAudioFileWrite(outfile, numFrames, outputBuffer.ABL())), fail, "ExtAudioFileWrite");
FailIf ((result = MusicPlayerGetTime (player, ¤tTime)), fail, "MusicPlayerGetTime");
if (shouldPrint && (++i % numTimesFor10Secs == 0))
printf ("current time: %6.2f beats\n", currentTime);
} while (currentTime < sequenceLength);
}
}
// close
ExtAudioFileDispose(outfile);
return;
fail:
printf ("Problem: %ld\n", (long)result);
exit(1);
}
int QBSoundMac::initGraph()
{
OSStatus err;
mAudioFormat.mSampleRate = 44100.000000;
mAudioFormat.mFormatID = kAudioFormatLinearPCM;
#ifdef __FLOAT_BUFFER__
mAudioFormat.mFormatFlags = 0
| kLinearPCMFormatFlagIsPacked
| kLinearPCMFormatFlagIsFloat
#if __BIG_ENDIAN__
| kLinearPCMFormatFlagIsBigEndian
#endif
;
mAudioFormat.mBytesPerPacket = 8;
mAudioFormat.mFramesPerPacket = 1;
mAudioFormat.mBytesPerFrame = 8;
mAudioFormat.mChannelsPerFrame = 2;
mAudioFormat.mBitsPerChannel = 32;
mAudioFormat.mReserved = 0;
#else
mAudioFormat.mFormatFlags = 0
| kLinearPCMFormatFlagIsPacked
| kLinearPCMFormatFlagIsSignedInteger
#if __BIG_ENDIAN__
| kLinearPCMFormatFlagIsBigEndian
#endif
;
mAudioFormat.mBytesPerPacket = 4;
mAudioFormat.mFramesPerPacket = 1;
mAudioFormat.mBytesPerFrame = 4;
mAudioFormat.mChannelsPerFrame = 2;
mAudioFormat.mBitsPerChannel = 16;
mAudioFormat.mReserved = 0;
#endif
err = NewAUGraph(&mGraph);
#if !TARGET_OS_IPHONE
AudioComponentDescription description;
description.componentSubType = kAudioUnitSubType_DefaultOutput;
#else
AudioComponentDescription description;
description.componentSubType = kAudioUnitSubType_RemoteIO;
#endif
description.componentType = kAudioUnitType_Output;
description.componentManufacturer = kAudioUnitManufacturer_Apple;
description.componentFlags = 0;
description.componentFlagsMask = 0;
#if 1
err = AUGraphAddNode(mGraph,&description,&mOutputNode);
#else
err = AUGraphNewNode(mGraph,&description, 0, NULL, &mOutputNode);
#endif
err = AUGraphOpen(mGraph);
#if 1
err = AUGraphNodeInfo(mGraph,mOutputNode,NULL,&mAudioUnit);
#else
err = AUGraphGetNodeInfo(mGraph,mOutputNode,NULL,NULL,NULL,&mAudioUnit);
#endif
err = AudioUnitSetProperty(mAudioUnit,
kAudioUnitProperty_StreamFormat,
kAudioUnitScope_Input,
0,
&mAudioFormat,
sizeof(AudioStreamBasicDescription));
{
AURenderCallbackStruct input;
input.inputProc = callback;
input.inputProcRefCon = this;
err = AudioUnitSetProperty(mAudioUnit,
kAudioUnitProperty_SetRenderCallback,
kAudioUnitScope_Input,
0,
&input, sizeof(input));
}
// {
// AudioUnitSetParameter (mAudioUnit,
// kHALOutputParam_Volume,
// kAudioUnitScope_Global,0,1,0);
// }
err = AUGraphInitialize(mGraph);
//err = AUGraphStart(mGraph);
//pthread_mutex_init(&mLoaderThreadMutex,NULL);
#ifdef __USE_OGG_VORBIS__
mThreadEnd = false;
pthread_create(&mLoaderThread,NULL,LoaderThreadProc,this);
#endif
// mOpenGraph = false;
// mInitGraph = false;
// startAUGraph();
//printf("openAUGraph\n");
return err;
}
