| /* |
| * Copyright (c) 2007, 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 SoftLinearResampler2 interpolate method */ |
| |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| |
| import javax.sound.sampled.*; |
| |
| import com.sun.media.sound.*; |
| |
| public class Interpolate { |
| |
| private static float getResamplerTestValue(double i) |
| { |
| return (float)Math.sin(i / 10.0); |
| } |
| |
| private static void perfectInterpolation(float[] in_offset, float in_end, |
| float[] startpitch, float pitchstep, float[] out, int[] out_offset, |
| int out_end) { |
| |
| float pitch = startpitch[0]; |
| float ix = in_offset[0]; |
| int ox = out_offset[0]; |
| float ix_end = in_end; |
| int ox_end = out_end; |
| if (pitchstep == 0f) { |
| while (ix < ix_end && ox < ox_end) { |
| out[ox++] = getResamplerTestValue(ix); |
| ix += pitch; |
| } |
| } else { |
| while (ix < ix_end && ox < ox_end) { |
| out[ox++] = getResamplerTestValue(ix); |
| ix += pitch; |
| pitch += pitchstep; |
| } |
| } |
| in_offset[0] = ix; |
| out_offset[0] = ox; |
| startpitch[0] = pitch; |
| |
| } |
| |
| private static float testResampler(SoftAbstractResampler resampler, float p_pitch, float p_pitch2) |
| { |
| float[] testbuffer = new float[4096]; |
| float[] testbuffer2 = new float[1024]; |
| float[] testbuffer3 = new float[1024]; |
| for (int i = 0; i < testbuffer.length; i++) |
| testbuffer[i] = getResamplerTestValue(i); |
| int pads = resampler.getPadding(); |
| float pitchstep = (p_pitch2 - p_pitch)/1024f; |
| int[] out_offset2 = {0}; |
| int[] out_offset3 = {0}; |
| resampler.interpolate(testbuffer, new float[] {pads}, testbuffer.length - pads, new float[] {p_pitch}, pitchstep, testbuffer2, out_offset2, testbuffer2.length); |
| perfectInterpolation(new float[] {pads}, testbuffer.length - pads, new float[] {p_pitch}, pitchstep, testbuffer3, out_offset3, testbuffer3.length); |
| int out_off = out_offset2[0]; |
| if(out_offset3[0] < out_off) |
| out_off = out_offset3[0]; |
| float ac_error = 0; |
| int counter = 0; |
| for (int i = pads; i < out_off; i++) { |
| ac_error += Math.abs(testbuffer2[i] - testbuffer3[i]); |
| counter++; |
| } |
| return ac_error / ((float)counter); |
| } |
| |
| private static void fail(String error) throws Exception |
| { |
| throw new RuntimeException(error); |
| } |
| |
| public static void main(String[] args) throws Exception { |
| SoftLinearResampler2 resampler = new SoftLinearResampler2(); |
| float max = testResampler(resampler, 0.3f, 0.3f); |
| if(max > 0.2) |
| fail("Interpolation failed, error="+max); |
| max = testResampler(resampler, 0.3f, 0.01f); |
| if(max > 0.2) |
| fail("Interpolation failed, error="+max); |
| max = testResampler(resampler, 1.0f, 0.00f); |
| if(max > 0.2) |
| fail("Interpolation failed, error="+max); |
| } |
| } |
| |