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new audio engine backend for native CoreAudio audio I/O, and PortMIDI for MIDI.
Code builds, runs and functions. Full code review still pending, and some possibly changes to organization of code within the backend is possible
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Paul Davis
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/*
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Copyright (C) 2013 Waves Audio Ltd.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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//----------------------------------------------------------------------------------
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//
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//
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//! \file WCMRCoreAudioDeviceManager.h
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//!
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//! WCMRCoreAudioDeviceManager and related class declarations
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//!
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//---------------------------------------------------------------------------------*/
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#ifndef __WCMRCoreAudioDeviceManager_h_
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#define __WCMRCoreAudioDeviceManager_h_
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#include "WCMRAudioDeviceManager.h"
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#include "WCMRNativeAudio.h"
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#include "Threads/WCThreadSafe.h"
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#include <AudioUnit/AudioUnit.h>
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#include <AudioToolbox/AudioToolbox.h>
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#include <mach/mach.h>
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#include <CoreAudio/CoreAudio.h>
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//forward decl.
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class WCMRCoreAudioDeviceManager;
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#define WV_USE_TONE_GEN 0 ///! Set this to 1 to use a tone generator for input. See description at SetupToneGenerator for details.
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// This enum is for choosing filter for audio devices scan
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typedef enum eCABS_Method
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{
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eCABS_Simple = 0,
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eCABS_DestructiveCache,
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eCABS_CacheOnDeviceSet,
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eCABS_MethodNum // Must be last
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} eCABS_Method;
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//! Manages a port audio device, providing information
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//! about the device, and managing audio callbacks.
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class WCMRCoreAudioDevice : public WCMRNativeAudioDevice
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{
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public:
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WCMRCoreAudioDevice (WCMRCoreAudioDeviceManager *pManager, AudioDeviceID deviceID, bool useMultithreading = true, bool bNocopy = false);///<Constructor
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virtual ~WCMRCoreAudioDevice ();///<Destructor
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virtual const std::string& DeviceName() const;///<Name?
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virtual const std::vector<std::string>& InputChannels();///<Current Input Channel List? - note that this may change with change in sampling rate.
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virtual const std::vector<std::string>& OutputChannels();///<Current Output Channel List? - note that this may change with change in sampling rate.
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virtual const std::vector<int>& SamplingRates();///<Supported Sampling Rate List?
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virtual int CurrentSamplingRate(); ///<Current Sampling rate.?
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virtual WTErr SetCurrentSamplingRate(int newRate);///<Change Current Sampling Rate : This is a requset, might not be successful at run time!
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virtual const std::vector<int>& BufferSizes();///<Supported Buffer Size List? - note that this may change with change in sampling rate.
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virtual int CurrentBufferSize();///<Current Buffer Size.? - note that this may change with change in sampling rate.
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virtual WTErr SetCurrentBufferSize (int newSize);///<Change Current Buffer Size : This is a requset, might not be successful at run time!
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virtual ConnectionStates ConnectionStatus();///< Connection Status - device available, gone, disconnected
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virtual WTErr SetActive (bool newState);///<Prepare/Activate device.
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virtual WTErr SetStreaming (bool newState);///<Start/Stop Streaming - should reconnect connections when streaming starts!
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virtual WTErr DoIdle();///<Do Idle Processing
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virtual WTErr SetMonitorChannels (int leftChannel, int rightChannel);///<Set monitor channels. - optional, will not be available with AG
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virtual WTErr SetMonitorGain (float newGain);///<Set monitor gain. - optional, will not be available with AG
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virtual WTErr ShowConfigPanel (void *pParam);///< Show Control Panel - in case of ASIO this will work only with Active device!
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virtual int AudioCallback (float *pOutputBuffer, unsigned long framesPerBuffer, uint32_t inSampleTime, uint64_t inCycleStartTime);
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AudioDeviceID DeviceID () {return m_DeviceID;}
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virtual uint32_t GetLatency (bool isInput); ///< Get latency.
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virtual OSStatus GetStreamLatency(AudioDeviceID deviceID, bool isInput, std::vector<int>& latencies);
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protected:
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AudioDeviceID m_DeviceID; ///< The CoreAudio device id
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bool m_StopRequested; ///< should be set to true when want to stop, set to false otherwise.
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float *m_pInputData; ///< This is what came in with the most recent callback.
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int m_SampleCounter; ///< The current running sample counter, updated by the audio callback.
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int m_SampleCountAtLastIdle; ///< What was the sample count last time we checked...
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int m_StalledSampleCounter; ///< The number of idle calls with same sample count detected
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int m_ChangeCheckCounter; ///< The number of idle calls passed since we checked the buffer size change.
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wvNS::wvThread::timestamp m_LastCPULog; ///< The time when the last CPU details log was sent as a notification.
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// unsigned int m_IOCyclesTimesTaken[MAX_IOCYCLE_TIMES]; ///< This stores the times taken by each IOCycle, in host-time units.
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// int m_CurrentIOCycle; ///< The location in m_IOCyclesTymesTaken array, where the next cycle's value will go.
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// int m_CyclesToAccumulate; ///< The number of cycles to accumulate the values for - maximum for last one second.
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// unsigned int m_CyclePeriod; ///< The number of host time units for a cycle period - determined by buffer size and sampling rate
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AudioBufferList m_InputAudioBufferList; ///< The buffer list used to get AHHAL to render input to.
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AudioUnit m_AUHALAudioUnit;///< The AUHAL AudioUnit
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int m_BufferSizeChangeRequested;
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int m_BufferSizeChangeReported;
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int m_ResetRequested;
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int m_ResetReported;
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int m_ResyncRequested;
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int m_ResyncReported;
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int m_SRChangeRequested;
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int m_SRChangeReported;
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int m_DropsDetected; ///< Number of times audio drops have been detected so far.
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int m_DropsReported; ///< Number of times audio drops have been reported so far to the client.
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bool m_IgnoreThisDrop; ///< Allows disregarding the first drop
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thread_t m_IOProcThreadPort; ///< Thread handle to calculate CPU consumption.
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int m_CPUCount; ///< Number of processors/core to normalize cpu consumption calculation.
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#if WV_USE_TONE_GEN
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//The Tone Generator...
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float_t *m_pToneData;
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uint32_t m_ToneDataSamples;
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uint32_t m_NextSampleToUse;
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#endif //WV_USE_TONE_GEN
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WTErr UpdateDeviceInfo (bool updateSRSupported, bool updateBufferSizes);
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WTErr UpdateDeviceName();
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WTErr UpdateDeviceInputs();
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WTErr UpdateDeviceOutputs();
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WTErr UpdateDeviceSampleRates();
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WTErr UpdateDeviceBufferSizes();
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WTErr SetWorkingBufferSize(int newSize);
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OSStatus SetBufferSizesByIO(int newSize);
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WTErr SetAndCheckCurrentSamplingRate (int newRate);
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WTErr EnableAudioUnitIO();
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WTErr virtual EnableListeners();
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WTErr virtual DisableListeners();
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WTErr SetupAUHAL();
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WTErr TearDownAUHAL();
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#if WV_USE_TONE_GEN
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void SetupToneGenerator ();
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#endif //WV_USE_TONE_GEN
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static OSStatus StaticAudioIOProc(void *inRefCon, AudioUnitRenderActionFlags * ioActionFlags,
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const AudioTimeStamp *inTimeStamp, UInt32 inBusNumber, UInt32 inNumberFrames,
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AudioBufferList *ioData);
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OSStatus AudioIOProc(AudioUnitRenderActionFlags * ioActionFlags,
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const AudioTimeStamp *inTimeStamp, UInt32 inBusNumber, UInt32 inNumberFrames,
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AudioBufferList *ioData);
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static OSStatus StaticPropertyChangeProc (AudioDeviceID inDevice, UInt32 inChannel, Boolean isInput,
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AudioDevicePropertyID inPropertyID, void *inClientData);
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void PropertyChangeProc (AudioDevicePropertyID inPropertyID);
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private:
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};
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//! WCMRCoreAudioDeviceManager
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/*! The CoreAudio Device Manager class */
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class WCMRCoreAudioDeviceManager : public WCMRAudioDeviceManager
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{
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public:
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WCMRCoreAudioDeviceManager(WCMRAudioDeviceManagerClient *pTheClient, eAudioDeviceFilter eCurAudioDeviceFilter,
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bool useMultithreading = true, eCABS_Method eCABS_method = eCABS_Simple, bool bNocopy = false); ///< constructor
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virtual ~WCMRCoreAudioDeviceManager(void); ///< Destructor
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virtual WTErr UpdateDeviceList() //has to be overridden!
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{
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//wvNS::wvThread::ThreadMutex::lock theLock(m_AudioDeviceManagerMutex);
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return UpdateDeviceList_Private();
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}
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virtual eCABS_Method GetBufferSizeMethod()
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{
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//wvNS::wvThread::ThreadMutex::lock theLock(m_AudioDeviceManagerMutex);
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return GetBufferSizeMethod_Private();
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}
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virtual WTErr DoIdle();
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private:
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WTErr UpdateDeviceList_Private();
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eCABS_Method GetBufferSizeMethod_Private() { return m_eCABS_Method; }
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protected:
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int m_UpdateDeviceListRequested; ///< Number of times device list change has been detected.
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int m_UpdateDeviceListProcessed; ///< Number of times device list change has been processed.
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bool m_UseMultithreading; ///< Flag indicates whether to use multi-threading for audio processing.
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bool m_bNoCopyAudioBuffer;
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eCABS_Method m_eCABS_Method; // Type of core audio buffer size list method
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static OSStatus StaticPropertyChangeProc (AudioHardwarePropertyID inPropertyID, void* inClientData);
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OSStatus PropertyChangeProc (AudioHardwarePropertyID inPropertyID);
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void remove_pattern(const std::string& original_str, const std::string& pattern_str, std::string& return_str);
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};
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#endif //#ifndef __WCMRCoreAudioDeviceManager_h_
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