asequencer0.java

java处理声音文件

	public static final String SND_SEQ_GROUP_SYSTEM =	"system";
	public static final String SND_SEQ_GROUP_DEVICE =	"device";
	public static final String SND_SEQ_GROUP_APPLICATION =	"application";


	public static final boolean	DEBUG = false;


	static
	{
		if (TDebug.TraceASequencer)
		{
			System.out.println("ASequencer0.<clinit>(): loading native library tritonusalsa");
		}
		System.loadLibrary("tritonusalsa");
	}

	/*
	 *	This holds a pointer for the native code - do not touch!
	 */
	private long		m_lNativeSeq;
	
	/*
	 *	The client Id assigned by the sequencer to this objects
	 *	connection.
	 */
	private int		m_nClientId;



	public ASequencer0()
	{
		if (DEBUG)
		{
			System.out.println("ASequencer0.<init>:");
			Thread.dumpStack();
		}
		m_nClientId = open();
	}



	public int getClientId()
	{
		return m_nClientId;
	}


	/**	Opens the sequencer.
	 *	Calls snd_seq_open() and snd_seq_client_id(). Returns the
	 *	client id.
	 */
	public native int open();

	/**	Closes the sequencer.
	 *	Calls snd_seq_close().
	 */
	public native void close();



	public native int createPort(String strName, int nCapabilities, int nGroupPermissions, int nType, int nMidiChannels, int nMidiVoices, int nSynthVoices);


	public native int allocQueue();


	/*
	 *	nResolution: ticks/beat
	 *	nTempo: microseconds/beat
	 */
	public native void setQueueTempo(int nQueue, int nResolution, int nTempo);


	/**	Get the current tempo of a queue.
	 *	Calls snd_seq_get_queue_tempo()
	 *	and put the data elements of the returned struct
	 *	into the passed arrays.
	 *	anValues[0]	tempo (us/tick)
	 *	anValues[1]	resolution (ticks/quarter)
	 */
	public native void getQueueTempo(int nQueue,
					  int[] anValues);


	/**	Get information about a queue.
	 *	Calls snd_seq_get_queue_status()
	 *	and put the data elements of the returned struct
	 *	into the passed arrays.
	 *	anValues[0]	number of events (= queue size)
	 *	anValues[1]	running flag
	 *	anValues[2]	flags
	 *
	 *	alValues[0]	tick
	 *	alValues[1]	time
	 */
	public native void getQueueStatus(int nQueue,
					  int[] anValues,
					  long[] alValues);


	public native void subscribePort(
		int nSenderClient, int nSenderPort,
		int nDestClient, int nDestPort,
		int nQueue, boolean bExclusive, boolean bRealtime, boolean bConvertTime,
		int nMidiChannels, int nMidiVoices, int nSynthVoices);


	public native void sendNoteEvent(
		int nType, int nFlags, int nTag, int nQueue, long lTime,
		int nSourcePort, int nDestClient, int nDestPort,
		int nChannel, int nNote, int nVelocity, int nOffVelocity, int nDuration);


	public native void sendControlEvent(
		int nType, int nFlags, int nTag, int nQueue, long lTime,
		int nSourcePort, int nDestClient, int nDestPort,
		int nChannel, int nParam, int nValue);


	public native void sendQueueControlEvent(
		int nType, int nFlags, int nTag, int nQueue, long lTime,
		int nSourcePort, int nDestClient, int nDestPort,
		int nControlQueue, int nControlValue, long lControlTime);


	/**
	 *	Encapsulates a Java object reference in an ALSA event.
	 *	As type, use SND_SEQ_EVENT_USR9. This one is detected by
	 *	getEvent() and the object reference is returned in the
	 *	passed object array.
	 */
	public native void sendObjectEvent(
		int nType, int nFlags, int nTag, int nQueue, long lTime,
		int nSourcePort, int nDestClient, int nDestPort,
		Object objectReference);


	/**
	 *	Transmits arbitrary data in an ALSA event.
	 *	In getEvent(), a reference to a byte array is returned
	 *	in the passed object array.
	 */
	public native void sendVarEvent(
		int nType, int nFlags, int nTag, int nQueue, long lTime,
		int nSourcePort, int nDestClient, int nDestPort,
		byte[] abData, int nOffset, int nLength);


	/**	Wait for an event.
	 *	Calls snd_seq_event_input().
	 *	and put the data elements of the returned event
	 *	into the passed arrays.
	 *	anValues[0]	type
	 *	anValues[1]	flags
	 *	anValues[2]	tag
	 *
	 *	anValues[3]	queue
	 *
	 *	anValues[4]	source client
	 *	anValues[5]	source port
	 *
	 *	anValues[6]	dest client
	 *	anValues[7]	dest port
	 *
	 *	The values starting with index 8 depend on the type of event.
	 *
	 *	SND_SEQ_EVENT_NOTE,
	 *	SND_SEQ_EVENT_NOTEON,
	 *	SND_SEQ_EVENT_NOTEOFF:
	 *	anValues[08]	channel
	 *	anValues[09]	note
	 *	anValues[10]	velocity
	 *	anValues[11]	off_velocity
	 *	anValues[12]	duration
	 *
	 *	SND_SEQ_EVENT_KEYPRESS,
	 *	SND_SEQ_EVENT_CONTROLLER,
	 *	SND_SEQ_EVENT_PGMCHANGE,
	 *	SND_SEQ_EVENT_CHANPRESS,
	 *	SND_SEQ_EVENT_PITCHBEND,
	 *	SND_SEQ_EVENT_CONTROL14, ??
	 *	SND_SEQ_EVENT_NONREGPARAM, ??
	 *	SND_SEQ_EVENT_REGPARAM: ??
	 *	anValues[08]	channel
	 *	anValues[09]	param
	 *	anValues[10]	values
	 *
	 *	SND_SEQ_EVENT_USR9:
	 *	aValues[0]	object reference
	 *
	 *	alValues[0]	(schedule) time (in ticks or nanoseconds)
	 *
	 *
	 *	returns true if an event was received. Above values are
	 *	only valid if this is true!
	 *
	 *	Throws RuntimeExceptions in certain cases.
	 */
	public native boolean getEvent(int[] anValues, long[] alValues, Object[] aValues);

	/**	Gets "system" information.
	 *	Calls snd_seq_system_info() and puts the relevant values into
	 *	the passed array.
	 */
	public native void getSystemInfo(int[] anValues);

	/**	Gets information about this client.
	 *	Calls snd_seq_get_client_info() [nClient <= -1]
	 *	or snd_seq_get_any_client_info() [nClient >= 0]
	 *	and put the returned values
	 *	into the passed arrays.
	 *	anValues[0]	client id
	 *	anValues[1]	client type
	 *	anValues[2]	filter flags
	 *	anValues[3]	num ports
	 *	astrValues[0]	name
	 *	astrValues[1]	group name
	 *
	 *	Returns 0 if successful.
	 */
	public native int getClientInfo(int nClient, int[] anValues, String[] astrValues);



	/**	Gets information about the next client.
	 *	Calls snd_seq_query_next_client().
	 *	and put the returned values
	 *	into the passed arrays.
	 *
	 *	nClient has to be -1 to start, or a client id returned by
	 *	a previous call to this method.
	 *
	 *	anValues[0]	client id
	 *	anValues[1]	client type
	 *	anValues[2]	filter flags
	 *	anValues[3]	num ports
	 *	astrValues[0]	name
	 *	astrValues[1]	group name
	 *
	 *	Returns 0 if successful.
	 */
	public native int getNextClientInfo(int nClient, int[] anValues, String[] astrValues);



	/**	Gets information about the next port.
	 *	Calls snd_seq_query_next_port().
	 *	and put the returned values
	 *	into the passed arrays.
	 *
	 *	nClient has to be a valid client.
	 *	nPort has to be -1 to start, or a port returned by
	 *	a previous call to this method.
	 *
	 *	anValues[0]	client
	 *	anValues[1]	port
	 *	anValues[2]	capabilities
	 *	anValues[3]	group capabilities
	 *	anValues[4]	type
	 *	anValues[5]	midi channels
	 *	anValues[6]	midi voices
	 *	anValues[7]	synth voices
	 *	anValues[8]	read use
	 *	anValues[9]	write use
	 *	astrValues[0]	name
	 *	astrValues[1]	group name
	 *
	 *	Returns 0 if successful.
	 */
	public native int getNextPortInfo(int nClient, int nPort, int[] anValues, String[] astrValues);


	public native void setQueueLocked(int nQueue, boolean bLocked);


	public native void setClientName(String strName);
}



/*** ASequencer0.java ***/