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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 se.lublin.humla.test;
import android.test.AndroidTestCase;
import com.googlecode.javacpp.Loader;
import se.lublin.humla.audio.encoder.CELT7Encoder;
import se.lublin.humla.audio.encoder.IEncoder;
import se.lublin.humla.audio.encoder.OpusEncoder;
import se.lublin.humla.audio.javacpp.Opus;
import se.lublin.humla.exception.NativeAudioException;
import se.lublin.humla.net.PacketBuffer;
/**
* This class tests the Opus and CELT encoders with blank PCM data.
* The bitrate is set to 40000bps. TODO: add test for varying bitrates.
* If any of these methods throw a NativeAudioException, then the test will fail.
* Created by andrew on 13/10/13.
*/
public class EncoderTest extends AndroidTestCase {
private static final int MAX_BUFFER_SIZE = 960;
private static final int SAMPLE_RATE = 48000;
private static final int BITRATE = 40000;
private static final int FRAME_SIZE = 480;
private static final int FRAMES_PER_PACKET = 4;
static {
Loader.load(Opus.class);
}
public void testOpusEncode() throws NativeAudioException {
IEncoder encoder = new OpusEncoder(SAMPLE_RATE, 1, FRAME_SIZE, FRAMES_PER_PACKET, BITRATE, MAX_BUFFER_SIZE);
testEncoder(encoder);
encoder.destroy();
}
public void testCELT7Encode() throws NativeAudioException {
CELT7Encoder encoder = new CELT7Encoder(SAMPLE_RATE, FRAME_SIZE, 1, FRAMES_PER_PACKET,
BITRATE, MAX_BUFFER_SIZE);
testEncoder(encoder);
encoder.destroy();
}
public void testEncoder(IEncoder encoder) throws NativeAudioException {
assertFalse(encoder.isReady());
assertEquals(0, encoder.getBufferedFrames());
//
final short[] dummyFrame = new short[FRAME_SIZE];
for (int i = 0; i < FRAMES_PER_PACKET; i++) {
assertFalse(encoder.isReady());
encoder.encode(dummyFrame, FRAME_SIZE);
}
assertTrue(encoder.isReady());
assertEquals(FRAMES_PER_PACKET, encoder.getBufferedFrames());
// Flushing
PacketBuffer buffer = PacketBuffer.allocate(MAX_BUFFER_SIZE);
encoder.getEncodedData(buffer);
assertFalse(encoder.isReady());
assertEquals(0, encoder.getBufferedFrames());
// Termination (for frames per packet > 1)
encoder.encode(dummyFrame, FRAME_SIZE);
assertFalse(encoder.isReady());
encoder.terminate();
assertTrue(encoder.isReady());
}
}
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