The IMMSequencer class is the base class for MIDI (Musical Instrument Digital Interface) playback. MIDI is a standard specification for playing back music from a series of commands, rather than from actual audio data. The commands represent musical events, such as turning a note on and off, as well as timing mechanisms for specifying the duration of the note's sound.
You can construct and destruct objects of this class.
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public:
virtual ~IMMSequencer()
Windows | OS/2 | AIX |
Yes | Yes | No |
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public:
IMMSequencer( bool openNow = true, unsigned long instance = 0, bool openShareable = true )
You can construct an IMMSequencer from the following:
Windows | OS/2 | AIX |
Yes | Yes | No |
protected:
IMMSequencer( unsigned long deviceIdentifier, const IString& newAlias = IString ( ) )
A derived class can construct an IMMSequencer from the following:
Windows | OS/2 | AIX |
Yes | Yes | No |
These members check if the passed-in string is in the correct format to open the current device.
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public:
virtual IMMSequencer& resume( bool resume = true, CallType call = wait )
Resumes playback of the device from a paused state if resume is true.
Windows | OS/2 | AIX |
Yes | Yes | No |
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public:
virtual IMMSequencer& setVolume( unsigned long volume, AudioChannel channel = all, const IMMMillisecondTime& over = IMMMillisecondTime ( ), CallType call = wait )
Sets the volume of the audio channel for the device, where 0 is the least amount of volume and 100 is the most amount of volume.
Windows | OS/2 | AIX |
Yes | Yes | No |
This member is overridden in this derived class for specific operating system behavior.
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public:
virtual unsigned long volume( AudioChannel channel = left, CallType call = wait ) const
Returns the volume of the audio channel for the device, where 0 is the least amount of volume and 100 is the most amount of volume.
Windows | OS/2 | AIX |
Yes | Yes | No |
This member is overridden in this derived class for specific operating system behavior.
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protected:
virtual bool isOpenStringValid( const IString& deviceName ) const
Returns true if the passed-in open string is valid for this device.
Windows | OS/2 | AIX |
Yes | Yes | No |
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protected:
virtual IMMSequencer& restoreDeviceSettings( bool newRecordMode = false )
Restores settings for the current device. Derived classes should override this function, handle class-specific settings, and call the corresponding inherited function.
Windows | OS/2 | AIX |
Yes | No | No |
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protected:
virtual IMMSequencer& saveDeviceSettings()
Saves settings for the current device. Derived classes should override this function, handle class-specific settings, and call the corresponding inherited function.
Windows | OS/2 | AIX |
Yes | No | No |
virtual ~IMMDevice()
virtual IMMDevice& acquire( ShareMode acquire = shareable, bool queuedForResources = false, CallType call = wait )
IString aliasName() const
virtual IMMDevice& close(CallType call = wait)
unsigned long connectedDeviceId( ConnectorType type, CallType call = wait ) const
virtual IMMDevice& deletePendingEvents( EventType event = allEvents )
IString description(CallType call = wait) const
unsigned long deviceId() const
IString deviceName() const
unsigned long deviceType(CallType call = wait) const
virtual IMMDevice& disableAudio( AudioChannel channel = all, const IMMMillisecondTime& over = IMMMillisecondTime ( ), CallType call = wait )
virtual IMMDevice& disableConnector( ConnectorType type, CallType call = wait )
virtual IMMDevice& enableAudio( bool enable = true, AudioChannel channel = all, const IMMMillisecondTime& over = IMMMillisecondTime ( ), CallType call = wait )
virtual IMMDevice& enableConnector( ConnectorType type, bool enable = true, CallType call = wait )
virtual IMMDevice& enableNotification(bool enabled = true)
bool isAcquired(CallType call = wait) const
bool isAudioEnabled( AudioChannel channel = all, CallType call = wait )
bool isCloseOnDestroy() const
bool isConnectionSupported( ConnectorType type, CallType call = wait ) const
bool isConnectorEnabled( ConnectorType type, CallType call = wait ) const
bool isOpen() const
virtual Mode mode(CallType call = wait) const
virtual IMMDevice& open( const IString& fileOrDevice = IString ( ), bool shareable = true, CallType call = wait )
virtual IMMDevice& openOnThread( const IString& fileOrDevice = IString ( ), bool shareable = true, CallType call = wait )
IMMTime prerollTime(CallType call = wait) const
PrerollType prerollType(CallType call = wait) const
virtual IMMDevice& release(CallType call = wait)
bool requiresFiles(CallType call = wait) const
IMMDevice& setCloseOnDestroy(bool close = true)
virtual IMMDevice& setSpeedFormat( IMMSpeed::Format format, CallType call = wait )
virtual IMMDevice& setTimeFormat( IMMTime::Format format, CallType call = wait )
virtual IMMDevice& setVolume( unsigned long volume, AudioChannel channel = all, const IMMMillisecondTime& over = IMMMillisecondTime ( ), CallType call = wait )
IMMSpeed::Format speedFormat(CallType call = wait) const
bool supportsAudio(CallType call = wait) const
bool supportsCommand( IMMNotifyEvent::Command command, CallType call = wait ) const
bool supportsDigitalTransfer(CallType call = wait) const
bool supportsDisableEject(CallType call = wait) const
bool supportsEject(CallType call = wait) const
bool supportsPlay(CallType call = wait) const
bool supportsRecord(CallType call = wait) const
bool supportsRecordInsertion(CallType call = wait) const
bool supportsSave(CallType call = wait) const
bool supportsStreaming(CallType call = wait) const
bool supportsVideo(CallType call = wait) const
bool supportsVolumeAdjustment(CallType call = wait) const
IMMTime::Format timeFormat(CallType call = wait) const
virtual ~IMMFileMedia()
IString filename(CallType call = wait) const
virtual bool isWriteable() const
virtual IMMFileMedia& load( const IString& filename, bool readOnly = false, CallType call = wait )
virtual IMMFileMedia& loadOnThread( const IString& filename, bool readOnly = false )
virtual IMMFileMedia& open( const IString& fileOrDevice = IString ( ), bool shareable = true, CallType call = wait )
virtual IMMFileMedia& openOnThread( const IString& fileOrDevice = IString ( ), bool shareable = true, CallType call = wait )
virtual ~IMMPlayableDevice()
virtual IMMPlayableDevice& addCuePoint( const IMMTime& time, CallType call = wait )
virtual IMMPlayableDevice& cueForPlayback( CallType call = wait )
unsigned long length(CallType call = wait) const
virtual IMMPlayableDevice& pause(CallType call = wait)
virtual IMMPlayableDevice& play( const IMMTime& from = IMMTime ( ), const IMMTime& to = IMMTime ( ), bool resumeIfPaused = true, CallType call = nowait )
unsigned long position(CallType call = wait) const
virtual IMMPlayableDevice& removeCuePoint( const IMMTime& time, CallType call = wait )
virtual IMMPlayableDevice& resume( bool resume = true, CallType call = wait )
virtual IMMPlayableDevice& seek( const IMMTime& to, CallType call = wait )
virtual IMMPlayableDevice& seekToEnd(CallType call = wait)
virtual IMMPlayableDevice& seekToStart( CallType call = wait )
virtual IMMPlayableDevice& startPositionTracking( const IMMTime& timeInterval, CallType call = wait )
virtual IMMPlayableDevice& stepFrame( unsigned long frames = 1, bool forward = true, CallType call = wait )
virtual IMMPlayableDevice& stop(CallType call = wait)
virtual IMMPlayableDevice& stopPositionTracking( CallType call = wait )
virtual ~INotifier()
virtual INotifier& disableNotification() = 0
virtual INotifier& enableNotification( bool enable = true ) = 0
INotifier()
virtual bool isEnabledForNotification() const = 0
virtual INotifier& notifyObservers( const INotificationEvent& event ) = 0
virtual INotifier& notifyObserversAsync( const INotificationEvent& event )
const IThreadId& threadId() const
virtual ~IStandardNotifier()
virtual IStandardNotifier& disableNotification()
virtual IStandardNotifier& enableNotification( bool enable = true )
virtual bool isEnabledForNotification() const
IStandardNotifier(const IStandardNotifier& copy)
IStandardNotifier()
virtual INotifierAddress notifierAddress() const
virtual IStandardNotifier& notifyObservers( const INotificationEvent& anEvent )
virtual IStandardNotifier& notifyObserversAsync( const INotificationEvent& anEvent )
IStandardNotifier& operator =( const IStandardNotifier& aStandardNotifier )
static INotificationId const allChangesId
static INotificationId const deleteId
static const unsigned long allDevices
static const unsigned long ampMixer
static const unsigned long animation
static const unsigned long audioCD
static const unsigned long audioTape
static const unsigned long cdxa
static INotificationId const commandNotifyId
static INotificationId const cuePointId
static const unsigned long dat
static INotificationId const deviceEventId
static const unsigned long digitalVideo
static const unsigned long headphone
static const unsigned long microphone
static const unsigned long monitor
static const unsigned long other
static const unsigned long overlay
static INotificationId const passDeviceId
static INotificationId const positionChangeId
static const unsigned long sequencer
static const unsigned long speaker
static const unsigned long videoDisc
static const unsigned long videoTape
static const unsigned long waveAudio
virtual INotifier& addObserver( IObserver& observer, const IInterest& interest )
virtual INotifier& notifyObservers( const INotificationId& id ) = 0
virtual IObserverList& observerList( const IInterest* anInterest = 0 ) const = 0
virtual INotifier& removeAllObservers() = 0
virtual INotifier& removeObserver(IObserver& observer) = 0
virtual INotifier& removeObserver( IObserver& observer, const IInterest& interest )
virtual IStandardNotifier& addObserver( IObserver& observer, const IInterest& interest )
virtual IStandardNotifier& notifyObservers( const INotificationId& nId )
virtual IObserverList& observerList( const IInterest* anInterest = 0 ) const
virtual IStandardNotifier& removeAllObservers()
virtual IStandardNotifier& removeObserver( IObserver& observer, const IInterest& interest )
virtual IStandardNotifier& removeObserver( IObserver& observer )
IMMMessageWindow& deviceWindow() const
IMMDevice( unsigned long deviceIdentifier, const IString& newAlias = IString ( ) )
IMMDevice(const IString& fileOrDevice)
unsigned long itemCapability( unsigned long item, CallType call ) const
unsigned long itemStatus( unsigned long item, unsigned long value = 0, CallType call = wait ) const
unsigned long lastError() const
virtual bool mixerControlValues( unsigned long dwComponentType, unsigned long dwControlType, unsigned long* ulDetails, bool uniform = true, unsigned long multipleItems = 0, unsigned long hmx = NULL )
virtual bool mixerControlValues( unsigned long dwComponentType, unsigned long dwControlType, unsigned short* usDetails, bool uniform = true, unsigned long multipleItems = 0, unsigned long hmx = NULL )
IMMDeviceNotifyHandler* notificationHandler() const
virtual IMMDevice& open( unsigned long instanceNumber, bool shareable = true, CallType call = nowait )
virtual IMMDevice& openOnThread( unsigned long instanceNumber, bool shareable = true )
OpenStatus openStatus() const
virtual IMMDevice& restoreDeviceSettings( bool newRecordMode = false )
virtual IMMDevice& saveDeviceSettings()
IString sendCommand( const IString& command, unsigned short userParm )
IString sendCommand(const IString& command)
IMMDevice& sendCommand( unsigned short message, unsigned long param1, void* param2, unsigned short userParm )
IMMDevice& sendCommand( unsigned short message, unsigned long param1, void* param2 )
IMMDevice& setLastError(unsigned long errorId)
virtual bool setMixerControlValues( unsigned long dwComponentType, unsigned long dwControlType, unsigned long* ulDetails, bool uniform = true, unsigned long multipleItems = 0, unsigned long hmx = NULL )
virtual bool setMixerControlValues( unsigned long dwComponentType, unsigned long dwControlType, unsigned short* usDetails, bool uniform = true, unsigned long multipleItems = 0, unsigned long hmx = NULL )
IMMDevice& setNotificationHandler( IMMDeviceNotifyHandler* notifyHandler )
IMMDevice& setOpenStatus(OpenStatus status)
IMMDevice& setPassDeviceRequested(bool sawPassDevice)
IMMDevice& setSystemMixerHandle(unsigned long hmx)
IMMDevice& setUserParameter(unsigned short userParm = 0)
unsigned long systemMixerHandle() const
unsigned short userParameter() const
bool wasPassDeviceRequested() const
virtual IMMFileMedia& enableDataUpdate(bool update = true)
IMMFileMedia( const IString& deviceName, bool openNow, unsigned long instance, bool openShareable )
IMMFileMedia( unsigned long deviceIdentifier, const IString& newAlias = IString ( ) )
virtual IMMFileMedia& open( unsigned long instanceNumber, bool shareable = true, CallType call = nowait )
virtual IMMFileMedia& openOnThread( unsigned long instanceNumber, bool shareable = true )
virtual IMMFileMedia& restoreDeviceSettings( bool newRecordMode = false )
virtual IMMFileMedia& saveDeviceSettings()
IMMPlayableDevice( const IString& deviceOrFileName, bool openNow = true, unsigned long instance = 0, bool openShareable = true )
IMMPlayableDevice( unsigned long deviceIdentifier, const IString& newAlias = IString ( ) )
virtual IMMPlayableDevice& restoreDeviceSettings( bool newRecordMode = false )
virtual IMMPlayableDevice& saveDeviceSettings()