115 lines
4.1 KiB
Java
115 lines
4.1 KiB
Java
/*
|
|
* 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 SoftLanczosResampler interpolate method
|
|
@modules java.desktop/com.sun.media.sound
|
|
*/
|
|
|
|
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 {
|
|
SoftLanczosResampler resampler = new SoftLanczosResampler();
|
|
float max = testResampler(resampler, 0.3f, 0.3f);
|
|
if(max > 0.01)
|
|
fail("Interpolation failed, error="+max);
|
|
max = testResampler(resampler, 0.3f, 0.01f);
|
|
if(max > 0.01)
|
|
fail("Interpolation failed, error="+max);
|
|
max = testResampler(resampler, 1.0f, 0.00f);
|
|
if(max > 0.01)
|
|
fail("Interpolation failed, error="+max);
|
|
}
|
|
}
|
|
|