| /* |
| * Copyright (c) 2002, 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * 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. |
| */ |
| |
| package com.sun.media.sound; |
| |
| import javax.sound.sampled.*; |
| |
| /** |
| * Class to write an AudioInputStream to a SourceDataLine. |
| * Was previously an inner class in various classes like JavaSoundAudioClip |
| * and sun.audio.AudioDevice. |
| * It auto-opens and closes the SourceDataLine. |
| * |
| * @author Kara Kytle |
| * @author Florian Bomers |
| */ |
| |
| public final class DataPusher implements Runnable { |
| |
| private static final int AUTO_CLOSE_TIME = 5000; |
| private static final boolean DEBUG = false; |
| |
| private final SourceDataLine source; |
| private final AudioFormat format; |
| |
| // stream as source data |
| private AudioInputStream ais = null; |
| |
| // byte array as source data |
| private byte[] audioData = null; |
| private int audioDataByteLength = 0; |
| private int pos; |
| private int newPos = -1; |
| private boolean looping; |
| |
| private Thread pushThread = null; |
| private int wantedState; |
| private int threadState; |
| |
| private final int STATE_NONE = 0; |
| private final int STATE_PLAYING = 1; |
| private final int STATE_WAITING = 2; |
| private final int STATE_STOPPING = 3; |
| private final int STATE_STOPPED = 4; |
| private final int BUFFER_SIZE = 16384; |
| |
| public DataPusher(SourceDataLine sourceLine, AudioFormat format, byte[] audioData, int byteLength) { |
| this.audioData = audioData; |
| this.audioDataByteLength = byteLength; |
| this.format = format; |
| this.source = sourceLine; |
| } |
| |
| public DataPusher(SourceDataLine sourceLine, AudioInputStream ais) { |
| this.ais = ais; |
| this.format = ais.getFormat(); |
| this.source = sourceLine; |
| } |
| |
| public synchronized void start() { |
| start(false); |
| } |
| |
| public synchronized void start(boolean loop) { |
| if (DEBUG || Printer.debug) Printer.debug("> DataPusher.start(loop="+loop+")"); |
| try { |
| if (threadState == STATE_STOPPING) { |
| // wait that the thread has finished stopping |
| if (DEBUG || Printer.trace)Printer.trace("DataPusher.start(): calling stop()"); |
| stop(); |
| } |
| looping = loop; |
| newPos = 0; |
| wantedState = STATE_PLAYING; |
| if (!source.isOpen()) { |
| if (DEBUG || Printer.trace)Printer.trace("DataPusher: source.open()"); |
| source.open(format); |
| } |
| if (DEBUG || Printer.trace)Printer.trace("DataPusher: source.flush()"); |
| source.flush(); |
| if (DEBUG || Printer.trace)Printer.trace("DataPusher: source.start()"); |
| source.start(); |
| if (pushThread == null) { |
| if (DEBUG || Printer.debug) Printer.debug("DataPusher.start(): Starting push"); |
| pushThread = JSSecurityManager.createThread(this, |
| null, // name |
| false, // daemon |
| -1, // priority |
| true); // doStart |
| } |
| notifyAll(); |
| } catch (Exception e) { |
| if (DEBUG || Printer.err) e.printStackTrace(); |
| } |
| if (DEBUG || Printer.debug) Printer.debug("< DataPusher.start(loop="+loop+")"); |
| } |
| |
| |
| public synchronized void stop() { |
| if (DEBUG || Printer.debug) Printer.debug("> DataPusher.stop()"); |
| if (threadState == STATE_STOPPING |
| || threadState == STATE_STOPPED |
| || pushThread == null) { |
| if (DEBUG || Printer.debug) Printer.debug("DataPusher.stop(): nothing to do"); |
| return; |
| } |
| if (DEBUG || Printer.debug) Printer.debug("DataPusher.stop(): Stopping push"); |
| |
| wantedState = STATE_WAITING; |
| if (source != null) { |
| if (DEBUG || Printer.trace)Printer.trace("DataPusher: source.flush()"); |
| source.flush(); |
| } |
| notifyAll(); |
| int maxWaitCount = 50; // 5 seconds |
| while ((maxWaitCount-- >= 0) && (threadState == STATE_PLAYING)) { |
| try { |
| wait(100); |
| } catch (InterruptedException e) { } |
| } |
| if (DEBUG || Printer.debug) Printer.debug("< DataPusher.stop()"); |
| } |
| |
| synchronized void close() { |
| if (source != null) { |
| if (DEBUG || Printer.trace)Printer.trace("DataPusher.close(): source.close()"); |
| source.close(); |
| } |
| } |
| |
| /** |
| * Write data to the source data line. |
| */ |
| public void run() { |
| byte[] buffer = null; |
| boolean useStream = (ais != null); |
| if (useStream) { |
| buffer = new byte[BUFFER_SIZE]; |
| } else { |
| buffer = audioData; |
| } |
| while (wantedState != STATE_STOPPING) { |
| //try { |
| if (wantedState == STATE_WAITING) { |
| // wait for 5 seconds - maybe the clip is to be played again |
| if (DEBUG || Printer.debug)Printer.debug("DataPusher.run(): waiting 5 seconds"); |
| try { |
| synchronized(this) { |
| threadState = STATE_WAITING; |
| wantedState = STATE_STOPPING; |
| wait(AUTO_CLOSE_TIME); |
| } |
| } catch (InterruptedException ie) {} |
| if (DEBUG || Printer.debug)Printer.debug("DataPusher.run(): waiting finished"); |
| continue; |
| } |
| if (newPos >= 0) { |
| pos = newPos; |
| newPos = -1; |
| } |
| threadState = STATE_PLAYING; |
| int toWrite = BUFFER_SIZE; |
| if (useStream) { |
| try { |
| pos = 0; // always write from beginning of buffer |
| // don't use read(byte[]), because some streams |
| // may not override that method |
| toWrite = ais.read(buffer, 0, buffer.length); |
| } catch (java.io.IOException ioe) { |
| // end of stream |
| toWrite = -1; |
| } |
| } else { |
| if (toWrite > audioDataByteLength - pos) { |
| toWrite = audioDataByteLength - pos; |
| } |
| if (toWrite == 0) { |
| toWrite = -1; // end of "stream" |
| } |
| } |
| if (toWrite < 0) { |
| if (DEBUG || Printer.debug) Printer.debug("DataPusher.run(): Found end of stream"); |
| if (!useStream && looping) { |
| if (DEBUG || Printer.debug)Printer.debug("DataPusher.run(): setting pos back to 0"); |
| pos = 0; |
| continue; |
| } |
| if (DEBUG || Printer.debug)Printer.debug("DataPusher.run(): calling drain()"); |
| wantedState = STATE_WAITING; |
| source.drain(); |
| continue; |
| } |
| if (DEBUG || Printer.debug) Printer.debug("> DataPusher.run(): Writing " + toWrite + " bytes"); |
| int bytesWritten = source.write(buffer, pos, toWrite); |
| pos += bytesWritten; |
| if (DEBUG || Printer.debug) Printer.debug("< DataPusher.run(): Wrote " + bytesWritten + " bytes"); |
| } |
| threadState = STATE_STOPPING; |
| if (DEBUG || Printer.debug)Printer.debug("DataPusher: closing device"); |
| if (Printer.trace)Printer.trace("DataPusher: source.flush()"); |
| source.flush(); |
| if (DEBUG || Printer.trace)Printer.trace("DataPusher: source.stop()"); |
| source.stop(); |
| if (DEBUG || Printer.trace)Printer.trace("DataPusher: source.flush()"); |
| source.flush(); |
| if (DEBUG || Printer.trace)Printer.trace("DataPusher: source.close()"); |
| source.close(); |
| threadState = STATE_STOPPED; |
| synchronized (this) { |
| pushThread = null; |
| notifyAll(); |
| } |
| if (DEBUG || Printer.debug)Printer.debug("DataPusher:end of thread"); |
| } |
| |
| } // class DataPusher |
