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package com.cycling74.msp;
/**
* Used to get or set pd array content. Please note that the channel parameter
* is added in the API to match Max/MSP MSPBuffer signature.
*/
public class MSPBuffer {
/**
* Returns the array content.
* @param name the array name
* @return the array contents
*/
public static float[] peek(String name) {
return getArray(name, 0, -1);
}
/**
* Returns the array content.
* @param name the array name
* @param channel <i>not used in pd</i>
* @return the array contents
*/
public static float[] peek(String name, int channel) {
return getArray(name, 0, -1);
}
/**
* Returns the array content.
* @param name the array name
* @param channel <i>not used in pd</i>
* @param start the start index of the array
* @param length the size of the array to return
* @return the array contents
*/
public static float[] peek(String name, int channel, long start, long length) {
return getArray(name, start, length);
}
/**
* Returns the array content value at a specific position.
* @param name the array name
* @param channel <i>not used in pd</i>
* @param index the start index of the array
* @return the value stored at index <code>start</code>
*/
public static float peek(String name, int channel, long index) {
float ret[] = getArray(name, index, 1);
if ( ret == null )
return 0;
return ret[0];
}
/**
* Sets array content.
* @param name the array name
* @param values the array to set
*/
public static void poke(String name, float values[]) {
setArray(name, 0, values);
}
/**
* Sets array content.
* @param name the array name
* @param channel <i>not used in pd</i>
* @param values the array to set
*/
public static void poke(String name, int channel, float values[]) {
setArray(name, 0, values);
}
/**
* Sets array content.
* @param name the array name
* @param channel <i>not used in pd</i>
* @param start the start index of the array
* @param values the array to set
*/
public static void poke(String name, int channel, long start, float values[]) {
setArray(name, start, values);
}
/**
* Set a value in a array.
* @param name the array name
* @param channel <i>not used in pd</i>
* @param index the index in the array to set
* @param value the value to set in the array
*/
public static void poke(String name, int channel, long index, float value) {
float content[] = new float[1];
content[0] = value;
setArray(name, index, content);
}
/**
* Sets the array size.
* @param name the array name
* @param numchannel <i>not used in pd</i>
* @param size the new array size;
*/
public static native void setSize(String name, int numchannel, long size);
/**
* Returns the array size
* @param name the array name
* @return the array size or -1 if not found
*/
public static native long getSize(String name);
private static native float[] getArray(String name, long from, long size);
private static native void setArray(String name, long from, float[]content);
private MSPBuffer() {}
/**
* Return the number of channel for this array. Useless in PD cause there
* is no channels in a array.
* @param name array name.
* @return always returns 1 on pd; unless the name is not defined.
*/
public static int getChannel(String name) {
// resolv the name
if ( getSize(name) != -1 )
return 1;
return -1;
}
}
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