/* Copyright Chris Cannam - All Rights Reserved */

package com.breakfastquay.rubberband;

public class RubberBandStretcher
{
    public RubberBandStretcher(int sampleRate, int channels,
			       int options,
			       double initialTimeRatio,
			       double initialPitchScale) {
	handle = 0;
	initialise(sampleRate, channels, options,
		   initialTimeRatio, initialPitchScale);
    }

    public native void dispose();

    public native void reset();

    public native void setTimeRatio(double ratio);
    public native void setPitchScale(double scale);

    public native int getChannelCount();
    public native double getTimeRatio();
    public native double getPitchScale();

    public native int getLatency();

    public native void setTransientsOption(int options);
    public native void setDetectorOption(int options);
    public native void setPhaseOption(int options);
    public native void setFormantOption(int options);
    public native void setPitchOption(int options);

    public native void setExpectedInputDuration(long samples);
    public native void setMaxProcessSize(int samples);

    public native int getSamplesRequired();

    //!!! setKeyFrameMap

    //!!! we should check, for example, that the samples arrays have the right number of channels
    //!!! extracting subset of array in java is a pain, this should take array + offset and there should be an interleaved alternative
    public native void study(float[][] input, boolean finalBlock);
    public native void process(float[][] input, boolean finalBlock);

    public native int available();
    public native int retrieve(float[][] output);

    private native void initialise(int sampleRate, int channels, int options,
				   double initialTimeRatio,
				   double initialPitchScale);
    private long handle;

    public static final int OptionProcessOffline       = 0x00000000;
    public static final int OptionProcessRealTime      = 0x00000001;

    public static final int OptionStretchElastic       = 0x00000000;
    public static final int OptionStretchPrecise       = 0x00000010;
    
    public static final int OptionTransientsCrisp      = 0x00000000;
    public static final int OptionTransientsMixed      = 0x00000100;
    public static final int OptionTransientsSmooth     = 0x00000200;

    public static final int OptionDetectorCompound     = 0x00000000;
    public static final int OptionDetectorPercussive   = 0x00000400;
    public static final int OptionDetectorSoft         = 0x00000800;

    public static final int OptionPhaseLaminar         = 0x00000000;
    public static final int OptionPhaseIndependent     = 0x00002000;

    public static final int OptionWindowStandard       = 0x00000000;
    public static final int OptionWindowShort          = 0x00100000;
    public static final int OptionWindowLong           = 0x00200000;

    public static final int OptionSmoothingOff         = 0x00000000;
    public static final int OptionSmoothingOn          = 0x00800000;

    public static final int OptionFormantShifted       = 0x00000000;
    public static final int OptionFormantPreserved     = 0x01000000;

    public static final int OptionPitchHighSpeed       = 0x00000000;
    public static final int OptionPitchHighQuality     = 0x02000000;
    public static final int OptionPitchHighConsistency = 0x04000000;

    public static final int OptionChannelsApart        = 0x00000000;
    public static final int OptionChannelsTogether     = 0x10000000;

    public static final int DefaultOptions             = 0x00000000;
    public static final int PercussiveOptions          = 0x00102000;

    static {
	System.loadLibrary("rubberband");
    }
};