| /* |
| * Copyright (c) 2007, 2013, 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 */ |
| |
| 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"); |
| } |
| } |
| } |
| } |
| |
| } |