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/*
* Copyright (C) 2020 The Android Ice Cold Project
*
* 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 2 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 james.dsp.utils;
import android.media.audiofx.AudioEffect;
import java.lang.reflect.Method;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.charset.Charset;
public class ParameterUtils {
private byte[] IntToByte(int[] input) {
int int_index, byte_index;
int iterations = input.length;
byte[] buffer = new byte[input.length * 4];
int_index = byte_index = 0;
for (; int_index != iterations; ) {
buffer[byte_index] = (byte) (input[int_index] & 0x00FF);
buffer[byte_index + 1] = (byte) ((input[int_index] & 0xFF00) >> 8);
buffer[byte_index + 2] = (byte) ((input[int_index] & 0xFF0000) >> 16);
buffer[byte_index + 3] = (byte) ((input[int_index] & 0xFF000000) >> 24);
++int_index;
byte_index += 4;
}
return buffer;
}
private int byteArrayToInt(byte[] encodedValue) {
int value = (encodedValue[3] << 24);
value |= (encodedValue[2] & 0xFF) << 16;
value |= (encodedValue[1] & 0xFF) << 8;
value |= (encodedValue[0] & 0xFF);
return value;
}
private byte[] concatArrays(byte[]... arrays) {
int len = 0;
for (byte[] a : arrays)
len += a.length;
byte[] b = new byte[len];
int offs = 0;
for (byte[] a : arrays) {
System.arraycopy(a, 0, b, offs, a.length);
offs += a.length;
}
return b;
}
public void setParameterIntArray(AudioEffect audioEffect, int parameter, int[] value) {
try {
byte[] arguments = new byte[]
{
(byte) (parameter), (byte) (parameter >> 8),
(byte) (parameter >> 16), (byte) (parameter >> 24)
};
byte[] result = IntToByte(value);
Method setParameter = AudioEffect.class.getMethod("setParameter", byte[].class, byte[].class);
setParameter.invoke(audioEffect, arguments, result);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public void setParameterFloatArray(AudioEffect audioEffect, int parameter, float value[]) {
try {
byte[] arguments = new byte[]
{
(byte) (parameter), (byte) (parameter >> 8),
(byte) (parameter >> 16), (byte) (parameter >> 24)
};
byte[] result = new byte[value.length * 4];
ByteBuffer byteDataBuffer = ByteBuffer.wrap(result);
byteDataBuffer.order(ByteOrder.nativeOrder());
for (int i = 0; i < value.length; i++)
byteDataBuffer.putFloat(value[i]);
Method setParameter = AudioEffect.class.getMethod("setParameter", byte[].class, byte[].class);
setParameter.invoke(audioEffect, arguments, result);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public void setParameterCharArray(AudioEffect audioEffect, int parameter, String value) {
try {
byte[] arguments = new byte[]
{
(byte) (parameter), (byte) (parameter >> 8),
(byte) (parameter >> 16), (byte) (parameter >> 24)
};
byte[] result = value.getBytes(Charset.forName("US-ASCII"));
if (result.length < 256) {
int zeroPad = 256 - result.length;
byte[] zeroArray = new byte[zeroPad];
result = concatArrays(result, zeroArray);
zeroArray = null;
}
Method setParameter = AudioEffect.class.getMethod("setParameter", byte[].class, byte[].class);
setParameter.invoke(audioEffect, arguments, result);
result = null;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public void setParameterInt(AudioEffect audioEffect, int parameter, int value) {
try {
byte[] arguments = new byte[]
{
(byte) (parameter), (byte) (parameter >> 8),
(byte) (parameter >> 16), (byte) (parameter >> 24)
};
byte[] result = new byte[]
{
(byte) (value), (byte) (value >> 8),
(byte) (value >> 16), (byte) (value >> 24)
};
Method setParameter = AudioEffect.class.getMethod("setParameter", byte[].class, byte[].class);
setParameter.invoke(audioEffect, arguments, result);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public void setParameterShort(AudioEffect audioEffect, int parameter, short value) {
try {
byte[] arguments = new byte[]
{
(byte) (parameter), (byte) (parameter >> 8),
(byte) (parameter >> 16), (byte) (parameter >> 24)
};
byte[] result = new byte[]
{
(byte) (value), (byte) (value >> 8)
};
Method setParameter = AudioEffect.class.getMethod("setParameter", byte[].class, byte[].class);
setParameter.invoke(audioEffect, arguments, result);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public int getParameter(AudioEffect audioEffect, int parameter) {
try {
byte[] arguments = new byte[]
{
(byte) (parameter), (byte) (parameter >> 8),
(byte) (parameter >> 16), (byte) (parameter >> 24)
};
byte[] result = new byte[4];
Method getParameter = AudioEffect.class.getMethod("getParameter", byte[].class, byte[].class);
getParameter.invoke(audioEffect, arguments, result);
return byteArrayToInt(result);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
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