package org.sipdroid.media.codecs;

public class GSM extends Codec {

	public static final CodecInfo mCodecInfo = new CodecInfo();

	static {

		System.loadLibrary("gsm");

		mCodecInfo.displayName = "GSM";

		mCodecInfo.rtpPayloadName = "GSM";

		mCodecInfo.description = "GSM Full Rate codec";

		mCodecInfo.rtpPayloadCode = 3;

		mCodecInfo.samplingRate = 8000;

		mCodecInfo.rtpSampleDivider = 1;

		mCodecInfo.minFrameTimeMsecs = 20;

		mCodecInfo.codecFrameSize = 33;

		CodecManager.registerAudioCodec(new GSM());

	}

	public class GSMContext extends Context {

		public long ctx;

	}

	@Override

	public Context initDecoder() {

		GSMContext decoderCtx = new GSMContext();

		decoderCtx.ctx = GSMJNI.create();

		return decoderCtx;

	}

	@Override

	public Context initEncoder() {

		GSMContext encoderCtx = new GSMContext();

		encoderCtx.ctx = GSMJNI.create();

		return encoderCtx;

	}

	@Override

	public void cleanDecoder(Context ctx) {

		GSMJNI.destroy(((GSMContext)ctx).ctx);

	}

	@Override

	public void cleanEncoder(Context ctx) {

		GSMJNI.destroy(((GSMContext)ctx).ctx);

	}

	@Override

	public int decode(Context ctx, byte[] indata, int inoffset, int size,

			short[] outsample, int outoffset) {

		return GSMJNI.decode(((GSMContext)ctx).ctx, indata, inoffset, outsample, outoffset);

	}

	@Override

	public int encode(Context ctx, short[] insample, int inoffset, int size,

			byte[] outdata, int outoffset) {

		GSMJNI.encode(((GSMContext)ctx).ctx, insample, inoffset, outdata, outoffset);

		return size;

	}

	@Override

	public CodecInfo getInfo() {

		return mCodecInfo;

	}

	static public void load(){

	}

}