829N/A/*
6321N/A * Copyright (c) 2007, 2013, 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,
829N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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
2362N/A * questions.
829N/A */
829N/Apackage com.sun.media.sound;
829N/A
829N/Aimport java.util.Arrays;
829N/A
829N/Aimport javax.sound.sampled.AudioFormat;
829N/A
829N/A/**
829N/A * This class is used to store audio buffer.
829N/A *
829N/A * @author Karl Helgason
829N/A */
6321N/Apublic final class SoftAudioBuffer {
829N/A
829N/A private int size;
829N/A private float[] buffer;
829N/A private boolean empty = true;
829N/A private AudioFormat format;
829N/A private AudioFloatConverter converter;
829N/A private byte[] converter_buffer;
829N/A
829N/A public SoftAudioBuffer(int size, AudioFormat format) {
829N/A this.size = size;
829N/A this.format = format;
829N/A converter = AudioFloatConverter.getConverter(format);
829N/A }
829N/A
1990N/A public void swap(SoftAudioBuffer swap)
1990N/A {
1990N/A int bak_size = size;
1990N/A float[] bak_buffer = buffer;
1990N/A boolean bak_empty = empty;
1990N/A AudioFormat bak_format = format;
1990N/A AudioFloatConverter bak_converter = converter;
1990N/A byte[] bak_converter_buffer = converter_buffer;
1990N/A
1990N/A size = swap.size;
1990N/A buffer = swap.buffer;
1990N/A empty = swap.empty;
1990N/A format = swap.format;
1990N/A converter = swap.converter;
1990N/A converter_buffer = swap.converter_buffer;
1990N/A
1990N/A swap.size = bak_size;
1990N/A swap.buffer = bak_buffer;
1990N/A swap.empty = bak_empty;
1990N/A swap.format = bak_format;
1990N/A swap.converter = bak_converter;
1990N/A swap.converter_buffer = bak_converter_buffer;
1990N/A }
1990N/A
829N/A public AudioFormat getFormat() {
829N/A return format;
829N/A }
829N/A
829N/A public int getSize() {
829N/A return size;
829N/A }
829N/A
829N/A public void clear() {
829N/A if (!empty) {
829N/A Arrays.fill(buffer, 0);
829N/A empty = true;
829N/A }
829N/A }
829N/A
829N/A public boolean isSilent() {
829N/A return empty;
829N/A }
829N/A
829N/A public float[] array() {
829N/A empty = false;
829N/A if (buffer == null)
829N/A buffer = new float[size];
829N/A return buffer;
829N/A }
829N/A
829N/A public void get(byte[] buffer, int channel) {
829N/A
829N/A int framesize_pc = (format.getFrameSize() / format.getChannels());
829N/A int c_len = size * framesize_pc;
829N/A if (converter_buffer == null || converter_buffer.length < c_len)
829N/A converter_buffer = new byte[c_len];
829N/A
829N/A if (format.getChannels() == 1) {
829N/A converter.toByteArray(array(), size, buffer);
829N/A } else {
829N/A converter.toByteArray(array(), size, converter_buffer);
829N/A if (channel >= format.getChannels())
829N/A return;
829N/A int z_stepover = format.getChannels() * framesize_pc;
829N/A int k_stepover = framesize_pc;
829N/A for (int j = 0; j < framesize_pc; j++) {
829N/A int k = j;
829N/A int z = channel * framesize_pc + j;
829N/A for (int i = 0; i < size; i++) {
829N/A buffer[z] = converter_buffer[k];
829N/A z += z_stepover;
829N/A k += k_stepover;
829N/A }
829N/A }
829N/A }
829N/A
829N/A }
829N/A}