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/*
* Copyright (c) 2007, 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/* @test
@summary Test AudioFloatConverter toFloatArray method
@modules java.desktop/com.sun.media.sound
*/
import javax.sound.sampled.*;
import com.sun.media.sound.*;
public class ToFloatArray {
public static void main(String[] args) throws Exception {
float[] testarray = new float[1024];
for (int i = 0; i < 1024; i++) {
double ii = i / 1024.0;
ii = ii * ii;
testarray[i] = (float)Math.sin(10*ii*2*Math.PI);
testarray[i] += (float)Math.sin(1.731 + 2*ii*2*Math.PI);
testarray[i] += (float)Math.sin(0.231 + 6.3*ii*2*Math.PI);
testarray[i] *= 0.3;
}
// Check conversion using PCM_FLOAT
for (int big = 0; big < 2; big+=1)
for (int bits = 32; bits <= 64; bits+=32) {
AudioFormat frm = new AudioFormat(
AudioFormat.Encoding.PCM_FLOAT,
44100, bits, 1, bits/8,
44100, big==1);
byte[] buff = new byte[testarray.length * frm.getFrameSize()];
float[] testarray2 = new float[testarray.length];
AudioFloatConverter conv = AudioFloatConverter.getConverter(frm);
conv.toByteArray(testarray, buff);
conv.toFloatArray(buff, testarray2);
for (int i = 0; i < testarray2.length; i++) {
if(Math.abs(testarray[i] - testarray2[i]) > 0.05)
throw new RuntimeException("Conversion failed for " + frm +" , arrays not equal enough!\n");
}
}
// Check conversion from float2byte and byte2float.
for (int big = 0; big < 2; big+=1)
for (int signed = 0; signed < 2; signed+=1)
for (int bits = 6; bits <= 40; bits+=2) {
AudioFormat frm = new AudioFormat(44100, bits, 1, signed==1, big==1);
byte[] buff = new byte[testarray.length * frm.getFrameSize()];
float[] testarray2 = new float[testarray.length];
AudioFloatConverter conv = AudioFloatConverter.getConverter(frm);
conv.toByteArray(testarray, buff);
conv.toFloatArray(buff, testarray2);
for (int i = 0; i < testarray2.length; i++) {
if(Math.abs(testarray[i] - testarray2[i]) > 0.05)
throw new RuntimeException("Conversion failed for " + frm +" , arrays not equal enough!\n");
}
}
// Check big/little
for (int big = 0; big < 2; big+=1)
for (int signed = 0; signed < 2; signed+=1)
for (int bits = 6; bits <= 40; bits+=2) {
AudioFormat frm = new AudioFormat(44100, bits, 1, signed==1, big==1);
byte[] buff = new byte[testarray.length * frm.getFrameSize()];
AudioFloatConverter conv = AudioFloatConverter.getConverter(frm);
conv.toByteArray(testarray, buff);
byte[] buff2 = new byte[testarray.length * frm.getFrameSize()];
int fs = frm.getFrameSize();
for (int i = 0; i < buff2.length; i+=fs) {
for (int j = 0; j < fs; j++) {
buff2[i+(fs-j-1)] = buff[i+j];
}
}
float[] testarray2 = new float[testarray.length];
AudioFormat frm2 = new AudioFormat(44100, bits, 1, signed==1, big==0);
AudioFloatConverter.getConverter(frm2).toFloatArray(buff2, testarray2);
for (int i = 0; i < testarray2.length; i++) {
if(Math.abs(testarray[i] - testarray2[i]) > 0.05)
{
throw new RuntimeException("Conversion failed for " + frm +" to " + frm2 + " , arrays not equal enough!\n");
}
}
}
// Check signed/unsigned
for (int big = 0; big < 2; big+=1)
for (int signed = 0; signed < 2; signed+=1)
for (int bits = 6; bits <= 40; bits+=2) {
AudioFormat frm = new AudioFormat(44100, bits, 1, signed==1, big==1);
byte[] b = new byte[testarray.length * frm.getFrameSize()];
AudioFloatConverter conv = AudioFloatConverter.getConverter(frm);
conv.toByteArray(testarray, b);
int fs = frm.getFrameSize();
if(big==1)
{
for(int i=0; i < b.length; i+= fs )
b[i] = (b[i] >= 0) ? (byte)(0x80 | b[i]) : (byte)(0x7F & b[i]);
}
else
{
for(int i=(0+fs-1); i < b.length; i+= fs )
b[i] = (b[i] >= 0) ? (byte)(0x80 | b[i]) : (byte)(0x7F & b[i]);
}
float[] testarray2 = new float[testarray.length];
AudioFormat frm2 = new AudioFormat(44100, bits, 1, signed==0, big==1);
AudioFloatConverter.getConverter(frm2).toFloatArray(b, testarray2);
for (int i = 0; i < testarray2.length; i++) {
if(Math.abs(testarray[i] - testarray2[i]) > 0.05)
{
throw new RuntimeException("Conversion failed for " + frm +" to " + frm2 + " , arrays not equal enough!\n");
}
}
}
// Check if conversion 32->24, 24->16, 16->8 result in same float data
AudioFormat frm = new AudioFormat(44100, 40, 1, true, true);
byte[] b = new byte[testarray.length * frm.getFrameSize()];
AudioFloatConverter.getConverter(frm).toByteArray(testarray, b);
for (int bits = 6; bits <= 40; bits+=2) {
AudioFormat frm2 = new AudioFormat(44100, bits, 1, true, true);
byte[] b2 = new byte[testarray.length * frm2.getFrameSize()];
int fs1 = frm.getFrameSize();
int fs2 = frm2.getFrameSize();
int ii = 0;
for (int i = 0; i < b.length; i+=fs1)
for (int j = 0; j < fs2; j++)
b2[ii++] = b[i+j];
float[] testarray2 = new float[testarray.length];
AudioFloatConverter.getConverter(frm2).toFloatArray(b2, testarray2);
for (int i = 0; i < testarray2.length; i++) {
if(Math.abs(testarray[i] - testarray2[i]) > 0.05)
{
throw new RuntimeException("Conversion failed for " + frm +" to " + frm2 + " , arrays not equal enough!\n");
}
}
}
}
}
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