diff options
Diffstat (limited to 'variablespeed/src')
6 files changed, 0 insertions, 893 deletions
diff --git a/variablespeed/src/com/android/ex/variablespeed/EngineParameters.java b/variablespeed/src/com/android/ex/variablespeed/EngineParameters.java deleted file mode 100644 index 1cc4012..0000000 --- a/variablespeed/src/com/android/ex/variablespeed/EngineParameters.java +++ /dev/null @@ -1,158 +0,0 @@ -/* - * Copyright (C) 2011 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 com.android.ex.variablespeed; - -import android.media.AudioManager; - -import javax.annotation.concurrent.Immutable; -import javax.annotation.concurrent.NotThreadSafe; - -/** - * Encapsulates the parameters required to configure the audio engine. - * <p> - * You should not need to use this class directly, it exists for the benefit of - * this package and the classes contained therein. - */ -@Immutable -/*package*/ final class EngineParameters { - private final int mTargetFrames; - private final int mMaxPlayBufferCount; - private final float mWindowDuration; - private final float mWindowOverlapDuration; - private final float mInitialRate; - private final int mDecodeBufferInitialSize; - private final int mDecodeBufferMaxSize; - private final int mStartPositionMillis; - private final int mAudioStreamType; - - public int getTargetFrames() { - return mTargetFrames; - } - - public int getMaxPlayBufferCount() { - return mMaxPlayBufferCount; - } - - public float getWindowDuration() { - return mWindowDuration; - } - - public float getWindowOverlapDuration() { - return mWindowOverlapDuration; - } - - public float getInitialRate() { - return mInitialRate; - } - - public int getDecodeBufferInitialSize() { - return mDecodeBufferInitialSize; - } - - public int getDecodeBufferMaxSize() { - return mDecodeBufferMaxSize; - } - - public int getStartPositionMillis() { - return mStartPositionMillis; - } - - public int getAudioStreamType() { - return mAudioStreamType; - } - - private EngineParameters(int targetFrames, int maxPlayBufferCount, float windowDuration, - float windowOverlapDuration, float initialRate, int decodeBufferInitialSize, - int decodeBufferMaxSize, int startPositionMillis, int audioStreamType) { - mTargetFrames = targetFrames; - mMaxPlayBufferCount = maxPlayBufferCount; - mWindowDuration = windowDuration; - mWindowOverlapDuration = windowOverlapDuration; - mInitialRate = initialRate; - mDecodeBufferInitialSize = decodeBufferInitialSize; - mDecodeBufferMaxSize = decodeBufferMaxSize; - mStartPositionMillis = startPositionMillis; - mAudioStreamType = audioStreamType; - } - - /** - * We use the builder pattern to construct an {@link EngineParameters} - * object. - * <p> - * This class is not thread safe, you should confine its use to one thread - * or provide your own synchronization. - */ - @NotThreadSafe - public static class Builder { - private int mTargetFrames = 1000; - private int mMaxPlayBufferCount = 2; - private float mWindowDuration = 0.08f; - private float mWindowOverlapDuration = 0.008f; - private float mInitialRate = 1.0f; - private int mDecodeBufferInitialSize = 5 * 1024; - private int mDecodeBufferMaxSize = 20 * 1024; - private int mStartPositionMillis = 0; - private int mAudioStreamType = AudioManager.STREAM_MUSIC; - - public EngineParameters build() { - return new EngineParameters(mTargetFrames, mMaxPlayBufferCount, - mWindowDuration, mWindowOverlapDuration, mInitialRate, - mDecodeBufferInitialSize, mDecodeBufferMaxSize, mStartPositionMillis, - mAudioStreamType); - } - - public Builder maxPlayBufferCount(int maxPlayBufferCount) { - mMaxPlayBufferCount = maxPlayBufferCount; - return this; - } - - public Builder windowDuration(int windowDuration) { - mWindowDuration = windowDuration; - return this; - } - - public Builder windowOverlapDuration(int windowOverlapDuration) { - mWindowOverlapDuration = windowOverlapDuration; - return this; - } - - public Builder initialRate(float initialRate) { - mInitialRate = initialRate; - return this; - } - - public Builder decodeBufferInitialSize(int decodeBufferInitialSize) { - mDecodeBufferInitialSize = decodeBufferInitialSize; - return this; - } - - public Builder decodeBufferMaxSize(int decodeBufferMaxSize) { - mDecodeBufferMaxSize = decodeBufferMaxSize; - return this; - } - - public Builder startPositionMillis(int startPositionMillis) { - mStartPositionMillis = startPositionMillis; - return this; - } - - public Builder audioStreamType(int audioStreamType) { - mAudioStreamType = audioStreamType; - return this; - } - } -} diff --git a/variablespeed/src/com/android/ex/variablespeed/MediaPlayerDataSource.java b/variablespeed/src/com/android/ex/variablespeed/MediaPlayerDataSource.java deleted file mode 100644 index 1c6a8cb..0000000 --- a/variablespeed/src/com/android/ex/variablespeed/MediaPlayerDataSource.java +++ /dev/null @@ -1,68 +0,0 @@ -/* - * Copyright (C) 2011 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 com.android.ex.variablespeed; - -import android.content.Context; -import android.media.MediaPlayer; -import android.net.Uri; - -import java.io.IOException; - -import javax.annotation.concurrent.Immutable; - -/** - * Encapsulates the data source for a media player. - * <p> - * Is used to make the setting of the data source for a - * {@link android.media.MediaPlayer} easier, or the calling of the correct - * {@link VariableSpeedNative} method done correctly. You should not use this class - * directly, it is for the benefit of the {@link VariableSpeed} implementation. - */ -@Immutable -/*package*/ class MediaPlayerDataSource { - private final Context mContext; - private final Uri mUri; - private final String mPath; - - public MediaPlayerDataSource(Context context, Uri intentUri) { - mContext = context; - mUri = intentUri; - mPath = null; - } - - public MediaPlayerDataSource(String path) { - mContext = null; - mUri = null; - mPath = path; - } - - public void setAsSourceFor(MediaPlayer mediaPlayer) throws IOException { - if (mContext != null) { - mediaPlayer.setDataSource(mContext, mUri); - } else { - mediaPlayer.setDataSource(mPath); - } - } - - public void playNative() throws IOException { - if (mContext != null) { - VariableSpeedNative.playFromContext(mContext, mUri); - } else { - VariableSpeedNative.playUri(mPath); - } - } -} diff --git a/variablespeed/src/com/android/ex/variablespeed/MediaPlayerProxy.java b/variablespeed/src/com/android/ex/variablespeed/MediaPlayerProxy.java deleted file mode 100644 index 3b7b576..0000000 --- a/variablespeed/src/com/android/ex/variablespeed/MediaPlayerProxy.java +++ /dev/null @@ -1,50 +0,0 @@ -/* - * Copyright (C) 2011 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 com.android.ex.variablespeed; - -import android.content.Context; -import android.media.MediaPlayer; -import android.net.Uri; - -import java.io.IOException; - -/** - * Interface that supports a subset of the operations on {@link android.media.MediaPlayer}. - * - * <p>This subset is arbitrarily defined - at the moment it is the subset that the voicemail - * playback requires.</p> - * - * <p>This interface exists to make alternate implementations to the standard media player - * swappable, as well as making it much easier to test code that directly uses a media player. - */ -public interface MediaPlayerProxy { - void setOnErrorListener(MediaPlayer.OnErrorListener listener); - void setOnCompletionListener(MediaPlayer.OnCompletionListener listener); - void release(); - void reset(); - void setDataSource(String path) throws IllegalStateException, IOException; - void setDataSource(Context context, Uri intentUri) throws IllegalStateException, IOException; - void prepare() throws IOException; - int getDuration(); - void seekTo(int startPosition); - void start(); - boolean isReadyToPlay(); - boolean isPlaying(); - int getCurrentPosition(); - void pause(); - void setAudioStreamType(int streamType); -} diff --git a/variablespeed/src/com/android/ex/variablespeed/SingleThreadedMediaPlayerProxy.java b/variablespeed/src/com/android/ex/variablespeed/SingleThreadedMediaPlayerProxy.java deleted file mode 100644 index c9a9741..0000000 --- a/variablespeed/src/com/android/ex/variablespeed/SingleThreadedMediaPlayerProxy.java +++ /dev/null @@ -1,115 +0,0 @@ -/* - * Copyright (C) 2011 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 com.android.ex.variablespeed; - -import android.content.Context; -import android.media.MediaPlayer; -import android.net.Uri; - -import java.io.IOException; - -/** - * Simple wrapper around a {@link MediaPlayerProxy}, guaranteeing that every call made to the - * MediaPlayerProxy is single-threaded. - */ -public class SingleThreadedMediaPlayerProxy implements MediaPlayerProxy { - private final MediaPlayerProxy mDelegate; - - public SingleThreadedMediaPlayerProxy(MediaPlayerProxy delegate) { - mDelegate = delegate; - } - - @Override - public synchronized void setOnErrorListener(MediaPlayer.OnErrorListener listener) { - mDelegate.setOnErrorListener(listener); - } - - @Override - public synchronized void setOnCompletionListener(MediaPlayer.OnCompletionListener listener) { - mDelegate.setOnCompletionListener(listener); - } - - @Override - public synchronized void release() { - mDelegate.release(); - } - - @Override - public synchronized void reset() { - mDelegate.reset(); - } - - @Override - public synchronized void setDataSource(String path) throws IllegalStateException, IOException { - mDelegate.setDataSource(path); - } - - @Override - public synchronized void setDataSource(Context context, Uri intentUri) - throws IllegalStateException, IOException { - mDelegate.setDataSource(context, intentUri); - } - - @Override - public synchronized void prepare() throws IOException { - mDelegate.prepare(); - } - - @Override - public synchronized int getDuration() { - return mDelegate.getDuration(); - } - - @Override - public synchronized void seekTo(int startPosition) { - mDelegate.seekTo(startPosition); - } - - @Override - public synchronized void start() { - mDelegate.start(); - } - - @Override - public synchronized boolean isReadyToPlay() { - return mDelegate.isReadyToPlay(); - } - - @Override - public synchronized boolean isPlaying() { - return mDelegate.isPlaying(); - } - - @Override - public synchronized int getCurrentPosition() { - return mDelegate.getCurrentPosition(); - } - - public void setVariableSpeed(float rate) { - ((VariableSpeed) mDelegate).setVariableSpeed(rate); - } - - @Override - public synchronized void pause() { - mDelegate.pause(); - } - - @Override - public void setAudioStreamType(int streamType) { - mDelegate.setAudioStreamType(streamType); - } -} diff --git a/variablespeed/src/com/android/ex/variablespeed/VariableSpeed.java b/variablespeed/src/com/android/ex/variablespeed/VariableSpeed.java deleted file mode 100644 index e44a375..0000000 --- a/variablespeed/src/com/android/ex/variablespeed/VariableSpeed.java +++ /dev/null @@ -1,410 +0,0 @@ -/* - * Copyright (C) 2011 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 com.android.ex.variablespeed; - -import com.google.common.base.Preconditions; - -import android.content.Context; -import android.media.MediaPlayer; -import android.net.Uri; -import android.util.Log; - -import java.io.IOException; -import java.util.concurrent.CountDownLatch; -import java.util.concurrent.Executor; -import java.util.concurrent.TimeUnit; -import java.util.concurrent.TimeoutException; - -import javax.annotation.concurrent.GuardedBy; -import javax.annotation.concurrent.ThreadSafe; - -/** - * This class behaves in a similar fashion to the MediaPlayer, but by using - * native code it is able to use variable-speed playback. - * <p> - * This class is thread-safe. It's not yet perfect though, see the unit tests - * for details - there is insufficient testing for the concurrent logic. You are - * probably best advised to use thread confinment until the unit tests are more - * complete with regards to threading. - * <p> - * The easiest way to ensure that calls to this class are not made concurrently - * (besides only ever accessing it from one thread) is to wrap it in a - * {@link SingleThreadedMediaPlayerProxy}, designed just for this purpose. - */ -@ThreadSafe -public class VariableSpeed implements MediaPlayerProxy { - private static final String TAG = "VariableSpeed"; - - private final Executor mExecutor; - private final Object lock = new Object(); - @GuardedBy("lock") private MediaPlayerDataSource mDataSource; - @GuardedBy("lock") private boolean mIsPrepared; - @GuardedBy("lock") private boolean mHasDuration; - @GuardedBy("lock") private boolean mHasStartedPlayback; - @GuardedBy("lock") private CountDownLatch mEngineInitializedLatch; - @GuardedBy("lock") private CountDownLatch mPlaybackFinishedLatch; - @GuardedBy("lock") private boolean mHasBeenReleased = true; - @GuardedBy("lock") private boolean mIsReadyToReUse = true; - @GuardedBy("lock") private boolean mSkipCompletionReport; - @GuardedBy("lock") private int mStartPosition; - @GuardedBy("lock") private float mCurrentPlaybackRate = 1.0f; - @GuardedBy("lock") private int mDuration; - @GuardedBy("lock") private MediaPlayer.OnCompletionListener mCompletionListener; - @GuardedBy("lock") private int mAudioStreamType; - - private VariableSpeed(Executor executor) throws UnsupportedOperationException { - Preconditions.checkNotNull(executor); - mExecutor = executor; - try { - VariableSpeedNative.loadLibrary(); - } catch (UnsatisfiedLinkError e) { - throw new UnsupportedOperationException("could not load library", e); - } catch (SecurityException e) { - throw new UnsupportedOperationException("could not load library", e); - } - reset(); - } - - public static MediaPlayerProxy createVariableSpeed(Executor executor) - throws UnsupportedOperationException { - return new SingleThreadedMediaPlayerProxy(new VariableSpeed(executor)); - } - - @Override - public void setOnCompletionListener(MediaPlayer.OnCompletionListener listener) { - synchronized (lock) { - check(!mHasBeenReleased, "has been released, reset before use"); - mCompletionListener = listener; - } - } - - @Override - public void setOnErrorListener(MediaPlayer.OnErrorListener listener) { - synchronized (lock) { - check(!mHasBeenReleased, "has been released, reset before use"); - // TODO: I haven't actually added any error listener code. - } - } - - @Override - public void release() { - synchronized (lock) { - if (mHasBeenReleased) { - return; - } - mHasBeenReleased = true; - } - stopCurrentPlayback(); - boolean requiresShutdown = false; - synchronized (lock) { - requiresShutdown = hasEngineBeenInitialized(); - } - if (requiresShutdown) { - VariableSpeedNative.shutdownEngine(); - } - synchronized (lock) { - mIsReadyToReUse = true; - } - } - - private boolean hasEngineBeenInitialized() { - return mEngineInitializedLatch.getCount() <= 0; - } - - private boolean hasPlaybackFinished() { - return mPlaybackFinishedLatch.getCount() <= 0; - } - - /** - * Stops the current playback, returns once it has stopped. - */ - private void stopCurrentPlayback() { - boolean isPlaying; - CountDownLatch engineInitializedLatch; - CountDownLatch playbackFinishedLatch; - synchronized (lock) { - isPlaying = mHasStartedPlayback && !hasPlaybackFinished(); - engineInitializedLatch = mEngineInitializedLatch; - playbackFinishedLatch = mPlaybackFinishedLatch; - if (isPlaying) { - mSkipCompletionReport = true; - } - } - if (isPlaying) { - waitForLatch(engineInitializedLatch); - VariableSpeedNative.stopPlayback(); - waitForLatch(playbackFinishedLatch); - } - } - - private void waitForLatch(CountDownLatch latch) { - try { - boolean success = latch.await(1, TimeUnit.SECONDS); - if (!success) { - reportException(new TimeoutException("waited too long")); - } - } catch (InterruptedException e) { - // Preserve the interrupt status, though this is unexpected. - Thread.currentThread().interrupt(); - reportException(e); - } - } - - @Override - public void setDataSource(Context context, Uri intentUri) { - checkNotNull(context, "context"); - checkNotNull(intentUri, "intentUri"); - innerSetDataSource(new MediaPlayerDataSource(context, intentUri)); - } - - @Override - public void setDataSource(String path) { - checkNotNull(path, "path"); - innerSetDataSource(new MediaPlayerDataSource(path)); - } - - private void innerSetDataSource(MediaPlayerDataSource source) { - checkNotNull(source, "source"); - synchronized (lock) { - check(!mHasBeenReleased, "has been released, reset before use"); - check(mDataSource == null, "cannot setDataSource more than once"); - mDataSource = source; - } - } - - @Override - public void reset() { - boolean requiresRelease; - synchronized (lock) { - requiresRelease = !mHasBeenReleased; - } - if (requiresRelease) { - release(); - } - synchronized (lock) { - check(mHasBeenReleased && mIsReadyToReUse, "to re-use, must call reset after release"); - mDataSource = null; - mIsPrepared = false; - mHasDuration = false; - mHasStartedPlayback = false; - mEngineInitializedLatch = new CountDownLatch(1); - mPlaybackFinishedLatch = new CountDownLatch(1); - mHasBeenReleased = false; - mIsReadyToReUse = false; - mSkipCompletionReport = false; - mStartPosition = 0; - mDuration = 0; - } - } - - @Override - public void prepare() throws IOException { - MediaPlayerDataSource dataSource; - int audioStreamType; - synchronized (lock) { - check(!mHasBeenReleased, "has been released, reset before use"); - check(mDataSource != null, "must setDataSource before you prepare"); - check(!mIsPrepared, "cannot prepare more than once"); - mIsPrepared = true; - dataSource = mDataSource; - audioStreamType = mAudioStreamType; - } - // NYI This should become another executable that we can wait on. - MediaPlayer mediaPlayer = new MediaPlayer(); - mediaPlayer.setAudioStreamType(audioStreamType); - dataSource.setAsSourceFor(mediaPlayer); - mediaPlayer.prepare(); - synchronized (lock) { - check(!mHasDuration, "can't have duration, this is impossible"); - mHasDuration = true; - mDuration = mediaPlayer.getDuration(); - } - mediaPlayer.release(); - } - - @Override - public int getDuration() { - synchronized (lock) { - check(!mHasBeenReleased, "has been released, reset before use"); - check(mHasDuration, "you haven't called prepare, can't get the duration"); - return mDuration; - } - } - - @Override - public void seekTo(int startPosition) { - boolean currentlyPlaying; - MediaPlayerDataSource dataSource; - synchronized (lock) { - check(!mHasBeenReleased, "has been released, reset before use"); - check(mHasDuration, "you can't seek until you have prepared"); - currentlyPlaying = mHasStartedPlayback && !hasPlaybackFinished(); - mStartPosition = Math.min(startPosition, mDuration); - dataSource = mDataSource; - } - if (currentlyPlaying) { - stopAndStartPlayingAgain(dataSource); - } - } - - private void stopAndStartPlayingAgain(MediaPlayerDataSource source) { - stopCurrentPlayback(); - reset(); - innerSetDataSource(source); - try { - prepare(); - } catch (IOException e) { - reportException(e); - return; - } - start(); - return; - } - - private void reportException(Exception e) { - Log.e(TAG, "playback error:", e); - } - - @Override - public void start() { - MediaPlayerDataSource restartWithThisDataSource = null; - synchronized (lock) { - check(!mHasBeenReleased, "has been released, reset before use"); - check(mIsPrepared, "must have prepared before you can start"); - if (!mHasStartedPlayback) { - // Playback has not started. Start it. - mHasStartedPlayback = true; - EngineParameters engineParameters = new EngineParameters.Builder() - .initialRate(mCurrentPlaybackRate) - .startPositionMillis(mStartPosition) - .audioStreamType(mAudioStreamType) - .build(); - VariableSpeedNative.initializeEngine(engineParameters); - VariableSpeedNative.startPlayback(); - mEngineInitializedLatch.countDown(); - mExecutor.execute(new PlaybackRunnable(mDataSource)); - } else { - // Playback has already started. Restart it, without holding the - // lock. - restartWithThisDataSource = mDataSource; - } - } - if (restartWithThisDataSource != null) { - stopAndStartPlayingAgain(restartWithThisDataSource); - } - } - - /** A Runnable capable of driving the native audio playback methods. */ - private final class PlaybackRunnable implements Runnable { - private final MediaPlayerDataSource mInnerSource; - - public PlaybackRunnable(MediaPlayerDataSource source) { - mInnerSource = source; - } - - @Override - public void run() { - try { - mInnerSource.playNative(); - } catch (IOException e) { - Log.e(TAG, "error playing audio", e); - } - MediaPlayer.OnCompletionListener completionListener; - boolean skipThisCompletionReport; - synchronized (lock) { - completionListener = mCompletionListener; - skipThisCompletionReport = mSkipCompletionReport; - mPlaybackFinishedLatch.countDown(); - } - if (!skipThisCompletionReport && completionListener != null) { - completionListener.onCompletion(null); - } - } - } - - @Override - public boolean isReadyToPlay() { - synchronized (lock) { - return !mHasBeenReleased && mHasDuration; - } - } - - @Override - public boolean isPlaying() { - synchronized (lock) { - return isReadyToPlay() && mHasStartedPlayback && !hasPlaybackFinished(); - } - } - - @Override - public int getCurrentPosition() { - synchronized (lock) { - check(!mHasBeenReleased, "has been released, reset before use"); - if (!mHasStartedPlayback) { - return 0; - } - if (!hasEngineBeenInitialized()) { - return 0; - } - if (!hasPlaybackFinished()) { - return VariableSpeedNative.getCurrentPosition(); - } - return mDuration; - } - } - - @Override - public void pause() { - synchronized (lock) { - check(!mHasBeenReleased, "has been released, reset before use"); - } - stopCurrentPlayback(); - } - - public void setVariableSpeed(float rate) { - // TODO: are there situations in which the engine has been destroyed, so - // that this will segfault? - synchronized (lock) { - check(!mHasBeenReleased, "has been released, reset before use"); - // TODO: This too is wrong, once we've started preparing the variable speed set - // will not be enough. - if (mHasStartedPlayback) { - VariableSpeedNative.setVariableSpeed(rate); - } - mCurrentPlaybackRate = rate; - } - } - - private void check(boolean condition, String exception) { - if (!condition) { - throw new IllegalStateException(exception); - } - } - - private void checkNotNull(Object argument, String argumentName) { - if (argument == null) { - throw new IllegalArgumentException(argumentName + " must not be null"); - } - } - - @Override - public void setAudioStreamType(int audioStreamType) { - synchronized (lock) { - mAudioStreamType = audioStreamType; - } - } -} diff --git a/variablespeed/src/com/android/ex/variablespeed/VariableSpeedNative.java b/variablespeed/src/com/android/ex/variablespeed/VariableSpeedNative.java deleted file mode 100644 index 07195db..0000000 --- a/variablespeed/src/com/android/ex/variablespeed/VariableSpeedNative.java +++ /dev/null @@ -1,92 +0,0 @@ -/* - * Copyright (C) 2011 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 com.android.ex.variablespeed; - -import com.android.common.io.MoreCloseables; - -import android.content.Context; -import android.content.res.AssetFileDescriptor; -import android.net.Uri; - -import java.io.FileDescriptor; -import java.io.FileNotFoundException; -import java.lang.reflect.Field; - -/** - * Provides all the native calls through to the underlying audio library. - * <p> - * You should not use this class directly. Prefer to use the {@link VariableSpeed} - * class instead. - */ -/*package*/ class VariableSpeedNative { - /*package*/ static void loadLibrary() throws UnsatisfiedLinkError, SecurityException { - System.loadLibrary("variablespeed"); - } - - /*package*/ static boolean playFromContext(Context context, Uri uri) - throws FileNotFoundException { - AssetFileDescriptor afd = context.getContentResolver().openAssetFileDescriptor(uri, "r"); - try { - FileDescriptor fileDescriptor = afd.getFileDescriptor(); - Field descriptorField = fileDescriptor.getClass().getDeclaredField("descriptor"); - descriptorField.setAccessible(true); - int fd = descriptorField.getInt(fileDescriptor); - VariableSpeedNative.playFileDescriptor(fd, afd.getStartOffset(), afd.getLength()); - return true; - } catch (SecurityException e) { - // Fall through. - } catch (NoSuchFieldException e) { - // Fall through. - } catch (IllegalArgumentException e) { - // Fall through. - } catch (IllegalAccessException e) { - // Fall through. - } finally { - MoreCloseables.closeQuietly(afd); - } - return false; - } - - /*package*/ static native void playUri(String uri); - - /*package*/ static native void playFileDescriptor(int fd, long offset, long length); - - /*package*/ static native void setVariableSpeed(float speed); - - /*package*/ static native void startPlayback(); - - /*package*/ static native void stopPlayback(); - - /*package*/ static native void shutdownEngine(); - - /*package*/ static native int getCurrentPosition(); - - /*package*/ static native int getTotalDuration(); - - /*package*/ static void initializeEngine(EngineParameters params) { - initializeEngine(params.getTargetFrames(), - params.getWindowDuration(), params.getWindowOverlapDuration(), - params.getMaxPlayBufferCount(), params.getInitialRate(), - params.getDecodeBufferInitialSize(), params.getDecodeBufferMaxSize(), - params.getStartPositionMillis(), params.getAudioStreamType()); - } - - private static native void initializeEngine(int targetFrames, - float windowDuration, float windowOverlapDuration, int maxPlayBufferCount, - float initialRate, int decodeBufferInitialSize, int decodeBufferMaxSize, - int startPositionMillis, int audioStreamType); -} |