829N/A/*
3261N/A * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
829N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
829N/A *
829N/A * This code is free software; you can redistribute it and/or modify it
829N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
829N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
829N/A *
829N/A * This code is distributed in the hope that it will be useful, but WITHOUT
829N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
829N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
829N/A * version 2 for more details (a copy is included in the LICENSE file that
829N/A * accompanied this code).
829N/A *
829N/A * You should have received a copy of the GNU General Public License version
829N/A * 2 along with this work; if not, write to the Free Software Foundation,
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829N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
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829N/A */
829N/A
829N/A/* @test
829N/A @summary Test AudioFloatConverter toFloatArray method */
829N/A
829N/Aimport javax.sound.sampled.*;
829N/A
829N/Aimport com.sun.media.sound.*;
829N/A
829N/Apublic class ToFloatArray {
829N/A
829N/A public static void main(String[] args) throws Exception {
829N/A float[] testarray = new float[1024];
829N/A for (int i = 0; i < 1024; i++) {
829N/A double ii = i / 1024.0;
829N/A ii = ii * ii;
829N/A testarray[i] = (float)Math.sin(10*ii*2*Math.PI);
829N/A testarray[i] += (float)Math.sin(1.731 + 2*ii*2*Math.PI);
829N/A testarray[i] += (float)Math.sin(0.231 + 6.3*ii*2*Math.PI);
829N/A testarray[i] *= 0.3;
829N/A }
829N/A
829N/A // Check conversion using PCM_FLOAT
829N/A for (int big = 0; big < 2; big+=1)
829N/A for (int bits = 32; bits <= 64; bits+=32) {
829N/A AudioFormat frm = new AudioFormat(
2867N/A AudioFormat.Encoding.PCM_FLOAT,
829N/A 44100, bits, 1, bits/8,
829N/A 44100, big==1);
829N/A byte[] buff = new byte[testarray.length * frm.getFrameSize()];
829N/A float[] testarray2 = new float[testarray.length];
829N/A AudioFloatConverter conv = AudioFloatConverter.getConverter(frm);
829N/A conv.toByteArray(testarray, buff);
829N/A conv.toFloatArray(buff, testarray2);
829N/A for (int i = 0; i < testarray2.length; i++) {
829N/A if(Math.abs(testarray[i] - testarray2[i]) > 0.05)
829N/A throw new RuntimeException("Conversion failed for " + frm +" , arrays not equal enough!\n");
829N/A }
829N/A }
829N/A
829N/A // Check conversion from float2byte and byte2float.
829N/A for (int big = 0; big < 2; big+=1)
829N/A for (int signed = 0; signed < 2; signed+=1)
829N/A for (int bits = 6; bits <= 40; bits+=2) {
829N/A AudioFormat frm = new AudioFormat(44100, bits, 1, signed==1, big==1);
829N/A byte[] buff = new byte[testarray.length * frm.getFrameSize()];
829N/A float[] testarray2 = new float[testarray.length];
829N/A AudioFloatConverter conv = AudioFloatConverter.getConverter(frm);
829N/A conv.toByteArray(testarray, buff);
829N/A conv.toFloatArray(buff, testarray2);
829N/A for (int i = 0; i < testarray2.length; i++) {
829N/A if(Math.abs(testarray[i] - testarray2[i]) > 0.05)
829N/A throw new RuntimeException("Conversion failed for " + frm +" , arrays not equal enough!\n");
829N/A }
829N/A }
829N/A
829N/A // Check big/little
829N/A for (int big = 0; big < 2; big+=1)
829N/A for (int signed = 0; signed < 2; signed+=1)
829N/A for (int bits = 6; bits <= 40; bits+=2) {
829N/A AudioFormat frm = new AudioFormat(44100, bits, 1, signed==1, big==1);
829N/A byte[] buff = new byte[testarray.length * frm.getFrameSize()];
829N/A AudioFloatConverter conv = AudioFloatConverter.getConverter(frm);
829N/A conv.toByteArray(testarray, buff);
829N/A byte[] buff2 = new byte[testarray.length * frm.getFrameSize()];
829N/A int fs = frm.getFrameSize();
829N/A for (int i = 0; i < buff2.length; i+=fs) {
829N/A for (int j = 0; j < fs; j++) {
829N/A buff2[i+(fs-j-1)] = buff[i+j];
829N/A }
829N/A }
829N/A float[] testarray2 = new float[testarray.length];
829N/A AudioFormat frm2 = new AudioFormat(44100, bits, 1, signed==1, big==0);
829N/A AudioFloatConverter.getConverter(frm2).toFloatArray(buff2, testarray2);
829N/A for (int i = 0; i < testarray2.length; i++) {
829N/A if(Math.abs(testarray[i] - testarray2[i]) > 0.05)
829N/A {
829N/A throw new RuntimeException("Conversion failed for " + frm +" to " + frm2 + " , arrays not equal enough!\n");
829N/A }
829N/A }
829N/A }
829N/A
829N/A // Check signed/unsigned
829N/A for (int big = 0; big < 2; big+=1)
829N/A for (int signed = 0; signed < 2; signed+=1)
829N/A for (int bits = 6; bits <= 40; bits+=2) {
829N/A AudioFormat frm = new AudioFormat(44100, bits, 1, signed==1, big==1);
829N/A byte[] b = new byte[testarray.length * frm.getFrameSize()];
829N/A AudioFloatConverter conv = AudioFloatConverter.getConverter(frm);
829N/A conv.toByteArray(testarray, b);
829N/A int fs = frm.getFrameSize();
829N/A if(big==1)
829N/A {
829N/A for(int i=0; i < b.length; i+= fs )
829N/A b[i] = (b[i] >= 0) ? (byte)(0x80 | b[i]) : (byte)(0x7F & b[i]);
829N/A }
829N/A else
829N/A {
829N/A for(int i=(0+fs-1); i < b.length; i+= fs )
829N/A b[i] = (b[i] >= 0) ? (byte)(0x80 | b[i]) : (byte)(0x7F & b[i]);
829N/A }
829N/A float[] testarray2 = new float[testarray.length];
829N/A AudioFormat frm2 = new AudioFormat(44100, bits, 1, signed==0, big==1);
829N/A AudioFloatConverter.getConverter(frm2).toFloatArray(b, testarray2);
829N/A for (int i = 0; i < testarray2.length; i++) {
829N/A if(Math.abs(testarray[i] - testarray2[i]) > 0.05)
829N/A {
829N/A throw new RuntimeException("Conversion failed for " + frm +" to " + frm2 + " , arrays not equal enough!\n");
829N/A }
829N/A }
829N/A }
829N/A
829N/A // Check if conversion 32->24, 24->16, 16->8 result in same float data
829N/A AudioFormat frm = new AudioFormat(44100, 40, 1, true, true);
829N/A byte[] b = new byte[testarray.length * frm.getFrameSize()];
829N/A AudioFloatConverter.getConverter(frm).toByteArray(testarray, b);
829N/A for (int bits = 6; bits <= 40; bits+=2) {
829N/A AudioFormat frm2 = new AudioFormat(44100, bits, 1, true, true);
829N/A byte[] b2 = new byte[testarray.length * frm2.getFrameSize()];
829N/A int fs1 = frm.getFrameSize();
829N/A int fs2 = frm2.getFrameSize();
829N/A int ii = 0;
829N/A for (int i = 0; i < b.length; i+=fs1)
829N/A for (int j = 0; j < fs2; j++)
829N/A b2[ii++] = b[i+j];
829N/A float[] testarray2 = new float[testarray.length];
829N/A AudioFloatConverter.getConverter(frm2).toFloatArray(b2, testarray2);
829N/A for (int i = 0; i < testarray2.length; i++) {
829N/A if(Math.abs(testarray[i] - testarray2[i]) > 0.05)
829N/A {
829N/A throw new RuntimeException("Conversion failed for " + frm +" to " + frm2 + " , arrays not equal enough!\n");
829N/A }
829N/A }
829N/A }
829N/A }
829N/A
829N/A}