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/*
* Copyright (C) 2014 Andrew Comminos
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.morlunk.jumble.audio.javacpp;
import com.googlecode.javacpp.IntPointer;
import com.googlecode.javacpp.Loader;
import com.googlecode.javacpp.Pointer;
import com.googlecode.javacpp.annotation.Cast;
import com.googlecode.javacpp.annotation.Platform;
import com.morlunk.jumble.audio.IDecoder;
import com.morlunk.jumble.exception.NativeAudioException;
import java.nio.ByteBuffer;
/**
* Created by andrew on 18/10/13.
*/
@Platform(library= "jniopus", cinclude={"<opus.h>","<opus_types.h>"})
public class Opus {
public static final int OPUS_APPLICATION_VOIP = 2048;
public static final int OPUS_SET_BITRATE_REQUEST = 4002;
public static final int OPUS_GET_BITRATE_REQUEST = 4003;
public static final int OPUS_SET_VBR_REQUEST = 4006;
public static native int opus_decoder_get_size(int channels);
public static native Pointer opus_decoder_create(int fs, int channels, IntPointer error);
public static native int opus_decoder_init(@Cast("OpusDecoder*") Pointer st, int fs, int channels);
public static native int opus_decode(@Cast("OpusDecoder*") Pointer st, @Cast("const unsigned char*") ByteBuffer data, int len, short[] out, int frameSize, int decodeFec);
public static native int opus_decode_float(@Cast("OpusDecoder*") Pointer st, @Cast("const unsigned char*") ByteBuffer data, int len, float[] out, int frameSize, int decodeFec);
//public static native int opus_decoder_ctl(@Cast("OpusDecoder*") Pointer st, int request);
public static native void opus_decoder_destroy(@Cast("OpusDecoder*") Pointer st);
//public static native int opus_packet_parse(@Cast("const unsigned char*") BytePointer data, int len, ...
public static native int opus_packet_get_bandwidth(@Cast("const unsigned char*") byte[] data);
public static native int opus_packet_get_samples_per_frame(@Cast("const unsigned char*") byte[] data, int fs);
public static native int opus_packet_get_nb_channels(@Cast("const unsigned char*") byte[] data);
public static native int opus_packet_get_nb_frames(@Cast("const unsigned char*") byte[] packet, int len);
public static native int opus_packet_get_nb_samples(@Cast("const unsigned char*") byte[] packet, int len, int fs);
public static native int opus_encoder_get_size(int channels);
public static native Pointer opus_encoder_create(int fs, int channels, int application, IntPointer error);
public static native int opus_encoder_init(@Cast("OpusEncoder*") Pointer st, int fs, int channels, int application);
public static native int opus_encode(@Cast("OpusEncoder*") Pointer st, @Cast("const short*") short[] pcm, int frameSize, @Cast("unsigned char*") byte[] data, int maxDataBytes);
public static native int opus_encode_float(@Cast("OpusEncoder*") Pointer st, @Cast("const float*") float[] pcm, int frameSize, @Cast("unsigned char*") byte[] data, int maxDataBytes);
public static native void opus_encoder_destroy(@Cast("OpusEncoder*") Pointer st);
public static native int opus_encoder_ctl(@Cast("OpusEncoder*") Pointer st, int request, Pointer value);
public static native int opus_encoder_ctl(@Cast("OpusEncoder*") Pointer st, int request, @Cast("opus_int32") int value);
static {
Loader.load();
}
public static class OpusDecoder implements IDecoder {
private Pointer mState;
public OpusDecoder(int sampleRate, int channels) throws NativeAudioException {
IntPointer error = new IntPointer(1);
error.put(0);
mState = opus_decoder_create(sampleRate, channels, error);
if(error.get() < 0) throw new NativeAudioException("Opus decoder initialization failed with error: "+error.get());
}
@Override
public int decodeFloat(ByteBuffer input, int inputSize, float[] output, int frameSize) throws NativeAudioException {
int result = opus_decode_float(mState, input, inputSize, output, frameSize, 0);
if(result < 0) throw new NativeAudioException("Opus decoding failed with error: "+result);
return result;
}
@Override
public int decodeShort(ByteBuffer input, int inputSize, short[] output, int frameSize) throws NativeAudioException {
int result = opus_decode(mState, input, inputSize, output, frameSize, 0);
if(result < 0) throw new NativeAudioException("Opus decoding failed with error: "+result);
return result;
}
@Override
public void destroy() {
opus_decoder_destroy(mState);
}
}
}
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