RenderSource.java

/*
 *  RenderSource.java
 *  Eisenkraut
 *
 *  Copyright (c) 2004-2016 Hanns Holger Rutz. All rights reserved.
 *
 *  This software is published under the GNU General Public License v3+
 *
 *
 *	For further information, please contact Hanns Holger Rutz at
 *	contact@sciss.de
 */

package de.sciss.eisenkraut.render;

import java.util.List;

import de.sciss.io.Span;
import de.sciss.timebased.Trail;

import de.sciss.eisenkraut.io.AudioTrail;
import de.sciss.eisenkraut.timeline.Track;

/**
 *  A RenderSource describes the source
 *  data for generating rendering output.
 *  This data is restricted to dynamic
 *  scalar vector data, i.e. data that
 *  changes over time : sense data
 *  (a receiver's sensibility at a point
 *  described by a transmitter trajectory)
 *  and trajectory data of a transmitter.
 */
public class RenderSource {
	public final int		numAudioChannels;
	public final boolean[]	audioTrackMap;
	
	/**
	 *  The blockSpan describes the
	 *  current time span of the provided data
	 *  in the source rate sense.
	 *  Thus, blockSpan.getLength() equals
	 *  blockBufLen
	 */
	public Span				blockSpan;
	/**
	 */
	public float[][]		audioBlockBuf;
	/**
	 *  Offset to use when reading data
	 *  from blockBuf
	 */
	public int				audioBlockBufOff;
	/**
	 *  Length to use when reading data
	 *  from blockBuf
	 */
	public int				audioBlockBufLen;
	
	public float[][]		clipboardBuf;	// offset + len identical to blockBufOff/Len !
	
	public final RenderContext	context;
	
	public Trail			markers;
	
	public boolean			validAudio;
	public boolean			validMarkers;
	
	/**
	 *  Constructs a new RenderSource, where
	 *  the arrays are pre-allocated for the
	 *  given number of transmitters and receivers.
	 *  Note that the final vectors are not
	 *  initialized, i.e. senseBlockBuf will
	 *  become new float[numTrns][numRcv][] etc.
	 *  All request fields are set to false by default.
	 *
	 *  @param 	context	...
	 */
	public RenderSource(RenderContext context) {
		this.context = context;
		
		final List<Track.Info> trackInfo	= context.getTrackInfo();
		int				ch			= 0;
		boolean[]		tm			= null;

		for (Track.Info ti : trackInfo) {
			if (ti.trail instanceof AudioTrail) {
				ch = ti.numChannels;
				tm = ti.trackMap;
			}
		}
		numAudioChannels	= ch;
		audioTrackMap		= tm;
		audioBlockBuf 		= new float[numAudioChannels][];
	}
}