/* * 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"); } } } } }