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C++ AudioUnitSetProperty函数代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了C++中AudioUnitSetProperty函数的典型用法代码示例。如果您正苦于以下问题:C++ AudioUnitSetProperty函数的具体用法?C++ AudioUnitSetProperty怎么用?C++ AudioUnitSetProperty使用的例子?那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。



在下文中一共展示了AudioUnitSetProperty函数的20个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: zeromem

Error AudioDriverIphone::init() {

	active = false;
	channels = 2;

	AudioStreamBasicDescription strdesc;
	strdesc.mFormatID = kAudioFormatLinearPCM;
	strdesc.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger | kLinearPCMFormatFlagIsPacked;
	strdesc.mChannelsPerFrame = channels;
	strdesc.mSampleRate = 44100;
	strdesc.mFramesPerPacket = 1;
	strdesc.mBitsPerChannel = 16;
	strdesc.mBytesPerFrame =
		strdesc.mBitsPerChannel * strdesc.mChannelsPerFrame / 8;
	strdesc.mBytesPerPacket =
		strdesc.mBytesPerFrame * strdesc.mFramesPerPacket;

	OSStatus result = noErr;
	AURenderCallbackStruct callback;
	AudioComponentDescription desc;
	AudioComponent comp = NULL;
	const AudioUnitElement output_bus = 0;
	const AudioUnitElement bus = output_bus;
	const AudioUnitScope scope = kAudioUnitScope_Input;

	zeromem(&desc, sizeof(desc));
	desc.componentType = kAudioUnitType_Output;
	desc.componentSubType = kAudioUnitSubType_RemoteIO;  /* !!! FIXME: ? */
	comp = AudioComponentFindNext(NULL, &desc);
	desc.componentManufacturer = kAudioUnitManufacturer_Apple;

	result = AudioComponentInstanceNew(comp, &audio_unit);
	ERR_FAIL_COND_V(result != noErr, FAILED);
	ERR_FAIL_COND_V(comp == NULL, FAILED);

	result = AudioUnitSetProperty(audio_unit,
								  kAudioUnitProperty_StreamFormat,
								  scope, bus, &strdesc, sizeof(strdesc));
	ERR_FAIL_COND_V(result != noErr, FAILED);

	zeromem(&callback, sizeof(AURenderCallbackStruct));
	callback.inputProc = &AudioDriverIphone::output_callback;
	callback.inputProcRefCon = this;
	result = AudioUnitSetProperty(audio_unit,
								  kAudioUnitProperty_SetRenderCallback,
								  scope, bus, &callback, sizeof(callback));
	ERR_FAIL_COND_V(result != noErr, FAILED);

	result = AudioUnitInitialize(audio_unit);
	ERR_FAIL_COND_V(result != noErr, FAILED);

	result = AudioOutputUnitStart(audio_unit);
	ERR_FAIL_COND_V(result != noErr, FAILED);

	const int samples = 1024;
	samples_in = memnew_arr(int32_t, samples); // whatever
	buffer_frames = samples / channels;

	return FAILED;
};
开发者ID:AMG194,项目名称:godot,代码行数:60,代码来源:audio_driver_iphone.cpp


示例2: AUGraphAddNode

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;
}
开发者ID:Tigrouzen,项目名称:UnrealEngine-4,代码行数:32,代码来源:CoreAudioSource.cpp


示例3: CFStringCreateWithCString

// ----------------------------------------------------------
void ofxAudioUnitNetReceive::connectToHost(const std::string &address, unsigned long port)
// ----------------------------------------------------------
{
    stringstream ss;
    ss << address << ":" << port;
    CFStringRef hostName = CFStringCreateWithCString(kCFAllocatorDefault,
                           ss.str().c_str(),
                           kCFStringEncodingUTF8);

    OFXAU_PRINT(AudioUnitSetProperty(*_unit,
                                     kAUNetReceiveProperty_Hostname,
                                     kAudioUnitScope_Global,
                                     0,
                                     &hostName,
                                     sizeof(hostName)),
                "setting net receive host name");

    // setting net send disconnect to 0 to connect net receive because that makes sense
    UInt32 connect = 0;
    OFXAU_PRINT(AudioUnitSetProperty(*_unit,
                                     kAUNetSendProperty_Disconnect,
                                     kAudioUnitScope_Global,
                                     0,
                                     &connect,
                                     sizeof(connect)),
                "connecting net receive");

    CFRelease(hostName);
}
开发者ID:ruxrux,项目名称:ofxAudioUnit,代码行数:30,代码来源:ofxAudioUnitNetReceive.cpp


示例4: audiounits_start

static int audiounits_start(void *usr) {
	au_instance_t *ap = (au_instance_t*) usr;
	OSStatus err;
	if (ap->kind == AI_RECORDER) {
#if defined(MAC_OS_X_VERSION_10_5) && (MAC_OS_X_VERSION_MIN_REQUIRED>=MAC_OS_X_VERSION_10_5)
		err = AudioDeviceStart(ap->inDev, ap->inIOProcID);
#else
		err = AudioDeviceStart(ap->inDev, inputRenderProc);
#endif
		if (err) Rf_error("unable to start recording (%08x)", err);
	} else {
		AURenderCallbackStruct renderCallback = { outputRenderProc, usr };
		ap->done = NO;
		/* set format */
		ap->fmtOut.mSampleRate = ap->sample_rate;
		err = AudioUnitSetProperty(ap->outUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, 0, &ap->fmtOut, sizeof(ap->fmtOut));
		if (err) Rf_error("unable to set output audio format (%08x)", err);
		/* set callback */
		err = AudioUnitSetProperty(ap->outUnit, kAudioUnitProperty_SetRenderCallback, kAudioUnitScope_Input, 0, &renderCallback, sizeof(renderCallback));
		if (err) Rf_error("unable to register audio callback (%08x)", err);
		/* start audio */
		err = AudioOutputUnitStart(ap->outUnit);
		if (err) Rf_error("unable to start playback (%08x)", err);
	}
	return 1;
}
开发者ID:brezniczky,项目名称:audio,代码行数:26,代码来源:au.c


示例5: AudioUnitSetProperty

void AudioDestinationIOS::configure()
{
    // Set render callback
    AURenderCallbackStruct input;
    input.inputProc = inputProc;
    input.inputProcRefCon = this;
    OSStatus result = AudioUnitSetProperty(m_outputUnit, kAudioUnitProperty_SetRenderCallback, kAudioUnitScope_Input, 0, &input, sizeof(input));
    ASSERT(!result);

    // Set stream format
    AudioStreamBasicDescription streamFormat;

    UInt32 size = sizeof(AudioStreamBasicDescription);
    result = AudioUnitGetProperty(m_outputUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Output, 0, (void*)&streamFormat, &size);
    ASSERT(!result);

    const int bytesPerFloat = sizeof(Float32);
    const int bitsPerByte = 8;
    streamFormat.mSampleRate = m_sampleRate;
    streamFormat.mFormatID = kAudioFormatLinearPCM;
    streamFormat.mFormatFlags = kAudioFormatFlagsNativeFloatPacked | kAudioFormatFlagIsNonInterleaved;
    streamFormat.mBytesPerPacket = bytesPerFloat;
    streamFormat.mFramesPerPacket = 1;
    streamFormat.mBytesPerFrame = bytesPerFloat;
    streamFormat.mChannelsPerFrame = 2;
    streamFormat.mBitsPerChannel = bitsPerByte * bytesPerFloat;

    result = AudioUnitSetProperty(m_outputUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, 0, (void*)&streamFormat, sizeof(AudioStreamBasicDescription));
    ASSERT(!result);

    AudioSession::sharedSession().setPreferredBufferSize(kPreferredBufferSize);
}
开发者ID:AndriyKalashnykov,项目名称:webkit,代码行数:32,代码来源:AudioDestinationIOS.cpp


示例6: AudioUnitSetProperty

OSStatus CAPlayThrough::EnableIO()
{	
	OSStatus err = noErr;
	UInt32 enableIO;
	
	///////////////
	//ENABLE IO (INPUT)
	//You must enable the Audio Unit (AUHAL) for input and disable output 
	//BEFORE setting the AUHAL's current device.
	
	//Enable input on the AUHAL
	enableIO = 1;
	err =  AudioUnitSetProperty(mInputUnit,
								kAudioOutputUnitProperty_EnableIO,
								kAudioUnitScope_Input,
								1, // input element
								&enableIO,
								sizeof(enableIO));
	checkErr(err);
	
	//disable Output on the AUHAL
	enableIO = 0;
	err = AudioUnitSetProperty(mInputUnit,
							  kAudioOutputUnitProperty_EnableIO,
							  kAudioUnitScope_Output,
							  0,   //output element
							  &enableIO,
							  sizeof(enableIO));
	return err;
}
开发者ID:aranm,项目名称:CAPlayThrough,代码行数:30,代码来源:CAPlayThrough.cpp


示例7: AudioUnitGetProperty

bool CAUOutputDevice::EnableInputOuput()
{
  if (!m_audioUnit)
    return false;

  OSStatus ret;
  UInt32 enable;
  UInt32 hasio;
  UInt32 size=sizeof(UInt32);

  ret = AudioUnitGetProperty(m_audioUnit,kAudioOutputUnitProperty_HasIO,kAudioUnitScope_Input, 1, &hasio, &size);

  if (hasio)
  {
    enable = 1;
    ret =  AudioUnitSetProperty(m_audioUnit, kAudioOutputUnitProperty_EnableIO, kAudioUnitScope_Input, kInputBus, &enable, sizeof(enable));
    if (ret)
    {
      CLog::Log(LOGERROR, "CAUOutputDevice::EnableInputOuput:: Unable to enable input on bus 1. Error = %s", GetError(ret).c_str());
      return false;
    }

    enable = 1;
    ret = AudioUnitSetProperty(m_audioUnit, kAudioOutputUnitProperty_EnableIO, kAudioUnitScope_Output, kOutputBus, &enable, sizeof(enable));
    if (ret)
    {
      CLog::Log(LOGERROR, "CAUOutputDevice::EnableInputOuput:: Unable to disable output on bus 0. Error = %s", GetError(ret).c_str());
      return false;
    }
  }

  return true;
}
开发者ID:midripps,项目名称:xbmc,代码行数:33,代码来源:CoreAudioAEHALIOS.cpp


示例8: AudioUnitSetProperty

void AudioDestinationMac::configure()
{
    // Set render callback
    AURenderCallbackStruct input;
    input.inputProc = inputProc;
    input.inputProcRefCon = this;
    OSStatus result = AudioUnitSetProperty(m_outputUnit, kAudioUnitProperty_SetRenderCallback, kAudioUnitScope_Global, 0, &input, sizeof(input));
    ASSERT(!result);

    // Set stream format
    AudioStreamBasicDescription streamFormat;
    streamFormat.mSampleRate = m_sampleRate;
    streamFormat.mFormatID = kAudioFormatLinearPCM;
    streamFormat.mFormatFlags = kAudioFormatFlagsNativeFloatPacked | kAudioFormatFlagIsNonInterleaved;
    streamFormat.mBitsPerChannel = 8 * sizeof(Float32);
    streamFormat.mChannelsPerFrame = 2;
    streamFormat.mFramesPerPacket = 1;
    streamFormat.mBytesPerPacket = sizeof(Float32);
    streamFormat.mBytesPerFrame = sizeof(Float32);

    result = AudioUnitSetProperty(m_outputUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, 0, (void*)&streamFormat, sizeof(AudioStreamBasicDescription));
    ASSERT(!result);

    // Set the buffer frame size.
    UInt32 bufferSize = kBufferSize;
    result = AudioUnitSetProperty(m_outputUnit, kAudioDevicePropertyBufferFrameSize, kAudioUnitScope_Output, 0, (void*)&bufferSize, sizeof(bufferSize));
    ASSERT(!result);
    
    m_input->configure(streamFormat, bufferSize);
}
开发者ID:cor3ntin,项目名称:LabSound,代码行数:30,代码来源:AudioDestinationMac.cpp


示例9: RegionForEntireFile

void ofxAudioUnitFilePlayer::prime() {
	
	_region = RegionForEntireFile(_fileID[0]);
	
	if(_seekSampleTime) {
		_region.mStartFrame = _seekSampleTime;
		_pauseTimeAccumulator += _seekSampleTime;
	} else if(_pauseTimeStamp.mSampleTime > 0) {
		_region.mStartFrame = _pauseTimeStamp.mSampleTime + _pauseTimeAccumulator;
		_pauseTimeAccumulator += _pauseTimeStamp.mSampleTime;
	} else {
		_pauseTimeAccumulator = 0;
	}
	
	if(_loopCount > 0) {
		_region.mLoopCount = _loopCount;
	}
	
	// resetting time-tracking members
	memset(&_pauseTimeStamp, 0, sizeof(_pauseTimeStamp));
	_loopCount = 0;
	_seekSampleTime = 0;
	
	if(!(_region.mTimeStamp.mFlags & kAudioTimeStampHostTimeValid)) {
		cout << "ofxAudioUnitFilePlayer has no file to play" << endl;
		return;
	}
	
	OFXAU_RETURN(AudioUnitSetProperty(*_unit,
	                                  kAudioUnitProperty_ScheduledFileIDs,
	                                  kAudioUnitScope_Global,
	                                  0,
	                                  _fileID,
	                                  sizeof(_fileID)),
	             "setting file player's file ID");
	
	OFXAU_RETURN(AudioUnitSetProperty(*_unit,
	                                  kAudioUnitProperty_ScheduledFileRegion,
	                                  kAudioUnitScope_Global,
	                                  0,
	                                  &_region,
	                                  sizeof(_region)),
	             "setting file player region");
	
	UInt32 framesToPrime = 0; // 0 = "use the default"
	OFXAU_RETURN(AudioUnitSetProperty(*_unit,
									  kAudioUnitProperty_ScheduledFilePrime,
									  kAudioUnitScope_Global,
									  0,
									  &framesToPrime,
									  sizeof(framesToPrime)),
				 "priming file player");
	
	_primed = true;
}
开发者ID:dferrandizmont,项目名称:ofxAudioUnit,代码行数:55,代码来源:ofxAudioUnitFilePlayer.cpp


示例10: SetupRemoteIO

int SetupRemoteIO (AudioUnit& inRemoteIOUnit, Float64 sampleRate, AURenderCallbackStruct inRenderProc, CAStreamBasicDescription& outFormat)
{
	try {
		// Open the output unit
		AudioComponentDescription desc;
		desc.componentType = kAudioUnitType_Output;
		desc.componentSubType = kAudioUnitSubType_RemoteIO;
		desc.componentManufacturer = kAudioUnitManufacturer_Apple;
		desc.componentFlags = 0;
		desc.componentFlagsMask = 0;
		
		AudioComponent comp = AudioComponentFindNext(NULL, &desc);
		
		XThrowIfError(AudioComponentInstanceNew(comp, &inRemoteIOUnit), "couldn't open the remote I/O unit");
        
        UInt32 zero = 0;
		UInt32 one = 1;
        //enable input
		XThrowIfError(AudioUnitSetProperty(inRemoteIOUnit, kAudioOutputUnitProperty_EnableIO, kAudioUnitScope_Input, 1, &one, sizeof(one)), "couldn't enable input on the remote I/O unit");
        //disable output
        XThrowIfError(AudioUnitSetProperty(inRemoteIOUnit, kAudioOutputUnitProperty_EnableIO, kAudioUnitScope_Output, 0, &zero, sizeof(zero)), "couldn't disable output ");
        
        //set input callback
		XThrowIfError(AudioUnitSetProperty(inRemoteIOUnit, kAudioOutputUnitProperty_SetInputCallback, kAudioUnitScope_Global, 1, &inRenderProc, sizeof(inRenderProc)), "couldn't set remote i/o input callback");
        
		
        // set our required format - LPCM non-interleaved 32 bit floating point
        AudioStreamBasicDescription outFormat;

        outFormat.mSampleRate = sampleRate;
        outFormat.mFormatID = kAudioFormatLinearPCM;
        outFormat.mFormatFlags = kAudioFormatFlagsNativeEndian | kAudioFormatFlagIsPacked | kAudioFormatFlagIsFloat | kAudioFormatFlagIsNonInterleaved;
        outFormat.mFramesPerPacket = 1;
        outFormat.mBytesPerPacket= 4;
        outFormat.mChannelsPerFrame = 1;
        outFormat.mBitsPerChannel = 32;
        outFormat.mBytesPerFrame = 4;
        
		XThrowIfError(AudioUnitSetProperty(inRemoteIOUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Output, 1, &outFormat, sizeof(outFormat)), "couldn't set the remote I/O unit's output client format");
        
		XThrowIfError(AudioUnitInitialize(inRemoteIOUnit), "couldn't initialize the remote I/O unit");
	}
	catch (CAXException &e) {
		char buf[256];
		fprintf(stderr, "Error: %s (%s)\n", e.mOperation, e.FormatError(buf));
		return 1;
	}
	catch (...) {
		fprintf(stderr, "An unknown error occurred\n");
		return 1;
	}
	
	return 0;
}
开发者ID:2k13yr,项目名称:surespot-ios,代码行数:54,代码来源:aurio_helper.cpp


示例11: AudioUnitSetProperty

OSStatus	CAAudioUnit::SetPresentPreset (AUPreset &inData)
{
	OSStatus result = AudioUnitSetProperty (AU(), kAudioUnitProperty_PresentPreset,
								kAudioUnitScope_Global, 0,
								&inData, sizeof (AUPreset));
	if (result == kAudioUnitErr_InvalidProperty) {
		result = AudioUnitSetProperty (AU(), kAudioUnitProperty_CurrentPreset,
								kAudioUnitScope_Global, 0,
								&inData, sizeof (AUPreset));
	}
	return result;
}
开发者ID:63n,项目名称:ardour,代码行数:12,代码来源:CAAudioUnit.cpp


示例12: notification

static OSStatus notification(AudioDeviceID inDevice,
							UInt32 inChannel,
							Boolean	isInput,
							AudioDevicePropertyID inPropertyID,
							void* inClientData)
{
    coreaudio_driver_t* driver = (coreaudio_driver_t*)inClientData;
    switch (inPropertyID) {
	
		case kAudioDeviceProcessorOverload:
			driver->xrun_detected = 1;
			break;
			
		case kAudioDevicePropertyNominalSampleRate: {
			UInt32 outSize =  sizeof(Float64);
			Float64 sampleRate;
			AudioStreamBasicDescription srcFormat, dstFormat;
			OSStatus err = AudioDeviceGetProperty(driver->device_id, 0, kAudioDeviceSectionGlobal, kAudioDevicePropertyNominalSampleRate, &outSize, &sampleRate);
			if (err != noErr) {
				jack_error("Cannot get current sample rate");
				return kAudioHardwareUnsupportedOperationError;
			}
			JCALog("JackCoreAudioDriver::NotificationCallback kAudioDevicePropertyNominalSampleRate %ld\n", (long)sampleRate);
			outSize = sizeof(AudioStreamBasicDescription);
			
			// Update SR for input
			err = AudioUnitGetProperty(driver->au_hal, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, 0, &srcFormat, &outSize);
			if (err != noErr) {
				jack_error("Error calling AudioUnitSetProperty - kAudioUnitProperty_StreamFormat kAudioUnitScope_Input");
			}
			srcFormat.mSampleRate = sampleRate;
			err = AudioUnitSetProperty(driver->au_hal, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, 0, &srcFormat, outSize);
			if (err != noErr) {
				jack_error("Error calling AudioUnitSetProperty - kAudioUnitProperty_StreamFormat kAudioUnitScope_Input");
			}
		
			// Update SR for output
			err = AudioUnitGetProperty(driver->au_hal, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Output, 1, &dstFormat, &outSize);
			if (err != noErr) {
				jack_error("Error calling AudioUnitSetProperty - kAudioUnitProperty_StreamFormat kAudioUnitScope_Output");
			}
			dstFormat.mSampleRate = sampleRate;
			err = AudioUnitSetProperty(driver->au_hal, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Output, 1, &dstFormat, outSize);
			if (err != noErr) {
				jack_error("Error calling AudioUnitSetProperty - kAudioUnitProperty_StreamFormat kAudioUnitScope_Output");
			}
			break;
		}
    }
    return noErr;
}
开发者ID:Llefjord,项目名称:jack1,代码行数:51,代码来源:coreaudio_driver.c


示例13: sizeof

// ----------------------------------------------------------
ofxAudioUnit& ofxAudioUnitInput::connectTo(ofxAudioUnit &otherUnit, int destinationBus, int sourceBus)
// ----------------------------------------------------------
{
	AudioStreamBasicDescription ASBD;
	UInt32 ASBDSize = sizeof(ASBD);
	
	OFXAU_PRINT(AudioUnitGetProperty(otherUnit,
									 kAudioUnitProperty_StreamFormat,
									 kAudioUnitScope_Input,
									 destinationBus,
									 &ASBD,
									 &ASBDSize),
				"getting hardware input destination's format");
	
	OFXAU_PRINT(AudioUnitSetProperty(*_unit,
									 kAudioUnitProperty_StreamFormat,
									 kAudioUnitScope_Output,
									 1,
									 &ASBD,
									 sizeof(ASBD)),
				"setting hardware input's output format");
	
	AURenderCallbackStruct callback = {PullCallback, &_impl->ctx};
	otherUnit.setRenderCallback(callback, destinationBus);
	return otherUnit;
}
开发者ID:microcosm,项目名称:ofxAudioUnit,代码行数:27,代码来源:ofxAudioUnitInput.cpp


示例14: sizeof

OSStatus CAPlayThrough::SetInputDeviceAsCurrent(AudioDeviceID in)
{
    UInt32 size = sizeof(AudioDeviceID);
    OSStatus err = noErr;
	
	if(in == kAudioDeviceUnknown) //get the default input device if device is unknown
	{  
		err = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultInputDevice,
									   &size,  
									   &in);
		checkErr(err);
	}
	
	mInputDevice.Init(in, true);
	
	//Set the Current Device to the AUHAL.
	//this should be done only after IO has been enabled on the AUHAL.
    err = AudioUnitSetProperty(mInputUnit,
							  kAudioOutputUnitProperty_CurrentDevice, 
							  kAudioUnitScope_Global, 
							  0, 
							  &mInputDevice.mID, 
							  sizeof(mInputDevice.mID));
	checkErr(err);
	return err;
}
开发者ID:aranm,项目名称:CAPlayThrough,代码行数:26,代码来源:CAPlayThrough.cpp


示例15: Core_CloseAudio

void Core_CloseAudio(_THIS)
{
    OSStatus result;
    struct AURenderCallbackStruct callback;

    /* stop processing the audio unit */
    result = AudioOutputUnitStop (outputAudioUnit);
    if (result != noErr) {
        SDL_SetError("Core_CloseAudio: AudioOutputUnitStop");
        return;
    }

    /* Remove the input callback */
    callback.inputProc = 0;
    callback.inputProcRefCon = 0;
    result = AudioUnitSetProperty (outputAudioUnit, 
                        kAudioUnitProperty_SetRenderCallback,
                        kAudioUnitScope_Input, 
                        0,
                        &callback, 
                        sizeof(callback));
    if (result != noErr) {
        SDL_SetError("Core_CloseAudio: AudioUnitSetProperty (kAudioUnitProperty_SetInputCallback)");
        return;
    }

    result = CloseComponent(outputAudioUnit);
    if (result != noErr) {
        SDL_SetError("Core_CloseAudio: CloseComponent");
        return;
    }
    
    SDL_free(buffer);
}
开发者ID:ahpho,项目名称:wowmapviewer,代码行数:34,代码来源:SDL_coreaudio.c


示例16: GetControl32BitValue

void	AUVPresets::HandleControlChange ()
{
#if !__LP64__
	SInt32 i = GetControl32BitValue(mControl);
	if (i > 0)
	{
		AUPreset* preset = (AUPreset*) CFArrayGetValueAtIndex (mPresets, i-1);
	
		verify_noerr(AudioUnitSetProperty (mView->GetEditAudioUnit(), 
									mPropertyID,	// either currentPreset or PresentPreset depending on which is supported
									kAudioUnitScope_Global, 
									0, 
									preset, 
									sizeof(AUPreset)));
									
		// when we change a preset we can't expect the AU to update its state
		// as it isn't meant to know that its being viewed!
		// so we broadcast a notification to all listeners that all parameters on this AU have changed
		AudioUnitParameter changedUnit;
		changedUnit.mAudioUnit = mView->GetEditAudioUnit();
		changedUnit.mParameterID = kAUParameterListener_AnyParameter;
		verify_noerr (AUParameterListenerNotify (NULL, NULL, &changedUnit) );
	}
#endif
}
开发者ID:kdridi,项目名称:acau,代码行数:25,代码来源:AUCarbonViewControl.cpp


示例17: gst_core_audio_bind_device

gboolean
gst_core_audio_bind_device (GstCoreAudio * core_audio)
{
  OSStatus status;

  /* Specify which device we're using. */
  GST_DEBUG_OBJECT (core_audio->osxbuf, "Bind AudioUnit to device %d",
      (int) core_audio->device_id);
  status = AudioUnitSetProperty (core_audio->audiounit,
      kAudioOutputUnitProperty_CurrentDevice, kAudioUnitScope_Global, 0,
      &core_audio->device_id, sizeof (AudioDeviceID));
  if (status) {
    GST_ERROR_OBJECT (core_audio->osxbuf, "Failed binding to device: %"
        GST_FOURCC_FORMAT, GST_FOURCC_ARGS (status));
    goto audiounit_error;
  }
  return TRUE;

audiounit_error:
  if (core_audio->recBufferList) {
    buffer_list_free (core_audio->recBufferList);
    core_audio->recBufferList = NULL;
  }
  return FALSE;
}
开发者ID:pli3,项目名称:gst-plugins-good,代码行数:25,代码来源:gstosxcoreaudiocommon.c


示例18: CFURLCreateFromFileSystemRepresentation

bool ofxAudioUnitFilePlayer::setFile(const std::string &filePath) {
	CFURLRef fileURL;
	fileURL = CFURLCreateFromFileSystemRepresentation(kCFAllocatorDefault,
	                                                  (const UInt8 *)filePath.c_str(),
	                                                  filePath.length(),
	                                                  NULL);
	
	if(_fileID[0]) {
		AudioFileClose(_fileID[0]);
		_fileID[0] = NULL;
	}
	
	OSStatus s = AudioFileOpenURL(fileURL, kAudioFileReadPermission, 0, _fileID);
	CFRelease(fileURL);
	
	_primed = false;
	
	if(s != noErr) {
		cout << "Error " << s << " while opening file at " << filePath << endl;
		return false;
	} else {
		// setting the file ID now since it seems to have some overhead.
		// Doing it now ensures you'll get sound pretty much instantly after
		// calling play() (subsequent calls don't have the overhead)
		OFXAU_RET_BOOL(AudioUnitSetProperty(*_unit,
											kAudioUnitProperty_ScheduledFileIDs,
											kAudioUnitScope_Global,
											0,
											_fileID,
											sizeof(_fileID)),
					   "setting file player's file ID");
	}
}
开发者ID:dferrandizmont,项目名称:ofxAudioUnit,代码行数:33,代码来源:ofxAudioUnitFilePlayer.cpp


示例19: AudioFilePlayer_Connect

static int    AudioFilePlayer_Connect(AudioFilePlayer *afp)
{
#if DEBUG
    printf ("Connect:%x, engaged=%d\n", (int)afp->mPlayUnit, (afp->mConnected ? 1 : 0));
#endif
    if (!afp->mConnected)
    {           
        if (!afp->mAudioFileManager->DoConnect(afp->mAudioFileManager))
            return 0;

        /* set the render callback for the file data to be supplied to the sound converter AU */
        afp->mInputCallback.inputProc = afp->mAudioFileManager->FileInputProc;
        afp->mInputCallback.inputProcRefCon = afp->mAudioFileManager;

        OSStatus result = AudioUnitSetProperty (afp->mPlayUnit, 
                            kAudioUnitProperty_SetRenderCallback,
                            kAudioUnitScope_Input, 
                            0,
                            &afp->mInputCallback, 
                            sizeof(afp->mInputCallback));
        if (result) return 0;  /*THROW_RESULT("AudioUnitSetProperty")*/
        afp->mConnected = 1;
    }

    return 1;
}
开发者ID:ahpho,项目名称:wowmapviewer,代码行数:26,代码来源:AudioFilePlayer.c


示例20: CFURLCreateFromFileSystemRepresentation

// ----------------------------------------------------------
bool ofxAudioUnitSampler::setSamples(const std::vector<std::string> &samplePaths)
// ----------------------------------------------------------
{
	CFURLRef sampleURLs[samplePaths.size()];
	
	for(int i = 0; i < samplePaths.size(); i++)
	{
		sampleURLs[i] = CFURLCreateFromFileSystemRepresentation(kCFAllocatorDefault,
																(const UInt8 *)samplePaths[i].c_str(),
																samplePaths[i].length(),
																NULL);
	}
	
	CFArrayRef samples = CFArrayCreate(NULL, (const void **)&sampleURLs, samplePaths.size(), &kCFTypeArrayCallBacks);
	
	OSStatus s = AudioUnitSetProperty(*_unit,
									 kAUSamplerProperty_LoadAudioFiles,
									 kAudioUnitScope_Global,
									 0,
									 &samples,
									 sizeof(samples));
	
	OFXAU_PRINT(s, "setting ofxAudioUnitSampler's source samples");
	
	for(int i = 0; i < samplePaths.size(); i++) CFRelease(sampleURLs[i]);
	
	CFRelease(samples);
	
	return s == noErr;
}
开发者ID:CLOUDS-Interactive-Documentary,项目名称:ofxAudioUnit,代码行数:31,代码来源:ofxAudioUnitSampler.cpp



注:本文中的AudioUnitSetProperty函数示例整理自Github/MSDocs等源码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。


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上一篇:
C++ AudioUnitUninitialize函数代码示例发布时间:2022-05-30
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C++ AudioUnitSetParameter函数代码示例发布时间:2022-05-30
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