Merge "Add the HTML5Audio class, to support the audio tag. The corresponding webkit C++ CL is https://android-git.corp.google.com/g/#change,41405"
diff --git a/core/java/android/webkit/HTML5Audio.java b/core/java/android/webkit/HTML5Audio.java
new file mode 100644
index 0000000..d292881
--- /dev/null
+++ b/core/java/android/webkit/HTML5Audio.java
@@ -0,0 +1,224 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.webkit;
+
+import android.media.MediaPlayer;
+import android.media.MediaPlayer.OnBufferingUpdateListener;
+import android.media.MediaPlayer.OnCompletionListener;
+import android.media.MediaPlayer.OnErrorListener;
+import android.media.MediaPlayer.OnPreparedListener;
+import android.media.MediaPlayer.OnSeekCompleteListener;
+import android.os.Handler;
+import android.os.Message;
+import android.util.Log;
+
+import java.io.IOException;
+import java.util.Timer;
+import java.util.TimerTask;
+
+/**
+ * <p>HTML5 support class for Audio.
+ */
+class HTML5Audio extends Handler
+ implements MediaPlayer.OnBufferingUpdateListener,
+ MediaPlayer.OnCompletionListener,
+ MediaPlayer.OnErrorListener,
+ MediaPlayer.OnPreparedListener,
+ MediaPlayer.OnSeekCompleteListener {
+ // Logging tag.
+ private static final String LOGTAG = "HTML5Audio";
+
+ private MediaPlayer mMediaPlayer;
+
+ // The C++ MediaPlayerPrivateAndroid object.
+ private int mNativePointer;
+
+ private static int IDLE = 0;
+ private static int INITIALIZED = 1;
+ private static int PREPARED = 2;
+ private static int STARTED = 4;
+ private static int COMPLETE = 5;
+ private static int PAUSED = 6;
+ private static int STOPPED = -2;
+ private static int ERROR = -1;
+
+ private int mState = IDLE;
+
+ private String mUrl;
+ private boolean mAskToPlay = false;
+
+ // Timer thread -> UI thread
+ private static final int TIMEUPDATE = 100;
+
+ // The spec says the timer should fire every 250 ms or less.
+ private static final int TIMEUPDATE_PERIOD = 250; // ms
+ // The timer for timeupate events.
+ // See http://www.whatwg.org/specs/web-apps/current-work/#event-media-timeupdate
+ private Timer mTimer;
+ private final class TimeupdateTask extends TimerTask {
+ public void run() {
+ HTML5Audio.this.obtainMessage(TIMEUPDATE).sendToTarget();
+ }
+ }
+
+ @Override
+ public void handleMessage(Message msg) {
+ switch (msg.what) {
+ case TIMEUPDATE: {
+ try {
+ if (mState != ERROR && mMediaPlayer.isPlaying()) {
+ int position = mMediaPlayer.getCurrentPosition();
+ nativeOnTimeupdate(position, mNativePointer);
+ }
+ } catch (IllegalStateException e) {
+ mState = ERROR;
+ }
+ }
+ }
+ }
+
+ // event listeners for MediaPlayer
+ // Those are called from the same thread we created the MediaPlayer
+ // (i.e. the webviewcore thread here)
+
+ // MediaPlayer.OnBufferingUpdateListener
+ public void onBufferingUpdate(MediaPlayer mp, int percent) {
+ nativeOnBuffering(percent, mNativePointer);
+ }
+
+ // MediaPlayer.OnCompletionListener;
+ public void onCompletion(MediaPlayer mp) {
+ resetMediaPlayer();
+ mState = IDLE;
+ nativeOnEnded(mNativePointer);
+ }
+
+ // MediaPlayer.OnErrorListener
+ public boolean onError(MediaPlayer mp, int what, int extra) {
+ mState = ERROR;
+ resetMediaPlayer();
+ mState = IDLE;
+ return false;
+ }
+
+ // MediaPlayer.OnPreparedListener
+ public void onPrepared(MediaPlayer mp) {
+ mState = PREPARED;
+ if (mTimer != null) {
+ mTimer.schedule(new TimeupdateTask(),
+ TIMEUPDATE_PERIOD, TIMEUPDATE_PERIOD);
+ }
+ nativeOnPrepared(mp.getDuration(), 0, 0, mNativePointer);
+ if (mAskToPlay) {
+ mAskToPlay = false;
+ play();
+ }
+ }
+
+ // MediaPlayer.OnSeekCompleteListener
+ public void onSeekComplete(MediaPlayer mp) {
+ nativeOnTimeupdate(mp.getCurrentPosition(), mNativePointer);
+ }
+
+
+ /**
+ * @param nativePtr is the C++ pointer to the MediaPlayerPrivate object.
+ */
+ public HTML5Audio(int nativePtr) {
+ // Save the native ptr
+ mNativePointer = nativePtr;
+ resetMediaPlayer();
+ }
+
+ private void resetMediaPlayer() {
+ if (mMediaPlayer == null) {
+ mMediaPlayer = new MediaPlayer();
+ } else {
+ mMediaPlayer.reset();
+ }
+ mMediaPlayer.setOnBufferingUpdateListener(this);
+ mMediaPlayer.setOnCompletionListener(this);
+ mMediaPlayer.setOnErrorListener(this);
+ mMediaPlayer.setOnPreparedListener(this);
+ mMediaPlayer.setOnSeekCompleteListener(this);
+
+ if (mTimer != null) {
+ mTimer.cancel();
+ }
+ mTimer = new Timer();
+ mState = IDLE;
+ }
+
+ private void setDataSource(String url) {
+ mUrl = url;
+ try {
+ if (mState != IDLE) {
+ resetMediaPlayer();
+ }
+ mMediaPlayer.setDataSource(url);
+ mState = INITIALIZED;
+ mMediaPlayer.prepareAsync();
+ } catch (IOException e) {
+ Log.e(LOGTAG, "couldn't load the resource: " + url + " exc: " + e);
+ resetMediaPlayer();
+ }
+ }
+
+ private void play() {
+ if ((mState == ERROR || mState == IDLE) && mUrl != null) {
+ resetMediaPlayer();
+ setDataSource(mUrl);
+ mAskToPlay = true;
+ }
+
+ if (mState >= PREPARED) {
+ mMediaPlayer.start();
+ mState = STARTED;
+ }
+ }
+
+ private void pause() {
+ if (mState == STARTED) {
+ if (mTimer != null) {
+ mTimer.purge();
+ }
+ mMediaPlayer.pause();
+ mState = PAUSED;
+ }
+ }
+
+ private void seek(int msec) {
+ if (mState >= PREPARED) {
+ mMediaPlayer.seekTo(msec);
+ }
+ }
+
+ private void teardown() {
+ mMediaPlayer.release();
+ mState = ERROR;
+ mNativePointer = 0;
+ }
+
+ private float getMaxTimeSeekable() {
+ return mMediaPlayer.getDuration() / 1000.0f;
+ }
+
+ private native void nativeOnBuffering(int percent, int nativePointer);
+ private native void nativeOnEnded(int nativePointer);
+ private native void nativeOnPrepared(int duration, int width, int height, int nativePointer);
+ private native void nativeOnTimeupdate(int position, int nativePointer);
+}