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Apache License
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/* * Copyright (C) 2014 Balzs Varga// www. j a v a 2 s.co m * * 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.warnyul.android.widget; import android.annotation.SuppressLint; import android.app.AlertDialog; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.res.Resources; import android.graphics.SurfaceTexture; import android.media.AudioManager; import android.media.MediaPlayer; import android.net.Uri; import android.util.AttributeSet; import android.util.Log; import android.view.KeyEvent; import android.view.MotionEvent; import android.view.Surface; import android.view.TextureView; import android.view.View; import android.view.accessibility.AccessibilityEvent; import android.view.accessibility.AccessibilityNodeInfo; import android.widget.MediaController; import java.io.IOException; import java.util.Map; /** * Displays a video file. The FastVideoView class * can load images from various sources (such as resources or content * providers), takes care of computing its measurement from the video so that * it can be used in any layout manager, and provides various display options * such as scaling and tinting.<p> * <p/> * <em>Note: FastVideoView does not retain its full state when going into the * background.</em> In particular, it does not restore the current play state, * play position, selected tracks. Applications should * save and restore these on their own in * {@link android.app.Activity#onSaveInstanceState} and * {@link android.app.Activity#onRestoreInstanceState}.<p> * Also note that the audio session id (from {@link #getAudioSessionId}) may * change from its previously returned value when the FastVideoView is restored. */ public class FastVideoView extends TextureView implements MediaController.MediaPlayerControl { private static final String TAG = FastVideoView.class.getSimpleName(); // settable by the client private Uri mUri; private Map<String, String> mHeaders; // all possible internal states private static final int STATE_ERROR = -1; private static final int STATE_IDLE = 0; private static final int STATE_PREPARING = 1; private static final int STATE_PREPARED = 2; private static final int STATE_PLAYING = 3; private static final int STATE_PAUSED = 4; private static final int STATE_PLAYBACK_COMPLETED = 5; // mCurrentState is a VideoView object's current state. // mTargetState is the state that a method caller intends to reach. // For instance, regardless the VideoView object's current state, // calling pause() intends to bring the object to a target state // of STATE_PAUSED. private int mCurrentState = STATE_IDLE; private int mTargetState = STATE_IDLE; // All the stuff we need for playing and showing a video private Surface mSurface = null; private MediaPlayer mMediaPlayer = null; private int mAudioSession; private int mVideoWidth; private int mVideoHeight; private int mSurfaceWidth; private int mSurfaceHeight; private MediaController mMediaController; private MediaPlayer.OnCompletionListener mOnCompletionListener; private MediaPlayer.OnPreparedListener mOnPreparedListener; private MediaPlayer.OnErrorListener mOnErrorListener; private MediaPlayer.OnInfoListener mOnInfoListener; private SurfaceTextureListener mOnSurfaceTextureListener; private int mCurrentBufferPercentage; private int mSeekWhenPrepared; // recording the seek position while preparing private boolean mCanPause; private boolean mCanSeekBack; private boolean mCanSeekForward; private MediaPlayer.OnBufferingUpdateListener mOnBufferingUpdateListener; public FastVideoView(Context context) { super(context); initVideoView(); } public FastVideoView(Context context, AttributeSet attrs) { super(context, attrs); initVideoView(); } public FastVideoView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); initVideoView(); } @Override protected void onMeasure(final int widthMeasureSpec, final int heightMeasureSpec) { int width = getDefaultSize(mVideoWidth, widthMeasureSpec); int height = getDefaultSize(mVideoHeight, heightMeasureSpec); if (mVideoWidth > 0 && mVideoHeight > 0) { int widthSpecMode = MeasureSpec.getMode(widthMeasureSpec); int widthSpecSize = MeasureSpec.getSize(widthMeasureSpec); int heightSpecMode = MeasureSpec.getMode(heightMeasureSpec); int heightSpecSize = MeasureSpec.getSize(heightMeasureSpec); if (widthSpecMode == MeasureSpec.EXACTLY && heightSpecMode == MeasureSpec.EXACTLY) { // the size is fixed width = widthSpecSize; height = heightSpecSize; // for compatibility, we adjust size based on aspect ratio if (mVideoWidth * height < width * mVideoHeight) { //Log.i("@@@", "image too wide, correcting"); width = height * mVideoWidth / mVideoHeight; } else if (mVideoWidth * height > width * mVideoHeight) { //Log.i("@@@", "image too tall, correcting"); height = width * mVideoHeight / mVideoWidth; } } else if (widthSpecMode == MeasureSpec.EXACTLY) { // only the width is fixed, adjust the height to match aspect ratio if possible width = widthSpecSize; height = width * mVideoHeight / mVideoWidth; if (heightSpecMode == MeasureSpec.AT_MOST && height > heightSpecSize) { // couldn't match aspect ratio within the constraints height = heightSpecSize; } } else if (heightSpecMode == MeasureSpec.EXACTLY) { // only the height is fixed, adjust the width to match aspect ratio if possible height = heightSpecSize; width = height * mVideoWidth / mVideoHeight; if (widthSpecMode == MeasureSpec.AT_MOST && width > widthSpecSize) { // couldn't match aspect ratio within the constraints width = widthSpecSize; } } else { // neither the width nor the height are fixed, try to use actual video size width = mVideoWidth; height = mVideoHeight; if (heightSpecMode == MeasureSpec.AT_MOST && height > heightSpecSize) { // too tall, decrease both width and height height = heightSpecSize; width = height * mVideoWidth / mVideoHeight; } if (widthSpecMode == MeasureSpec.AT_MOST && width > widthSpecSize) { // too wide, decrease both width and height width = widthSpecSize; height = width * mVideoHeight / mVideoWidth; } } } else { // no size yet, just adopt the given spec sizes } setMeasuredDimension(width, height); } @Override public void onInitializeAccessibilityEvent(AccessibilityEvent event) { super.onInitializeAccessibilityEvent(event); event.setClassName(FastVideoView.class.getName()); } @Override public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { super.onInitializeAccessibilityNodeInfo(info); info.setClassName(FastVideoView.class.getName()); } @Override public void setSurfaceTextureListener(SurfaceTextureListener listener) { mOnSurfaceTextureListener = listener; } public int resolveAdjustedSize(int desiredSize, int measureSpec) { return getDefaultSize(desiredSize, measureSpec); } private void initVideoView() { mVideoWidth = 0; mVideoHeight = 0; // setSurfaceTextureListener has been overwritten, and it is not call the super. super.setSurfaceTextureListener(mSurfaceTextureListener); setFocusable(true); setFocusableInTouchMode(true); requestFocus(); mCurrentState = STATE_IDLE; mTargetState = STATE_IDLE; } public void setVideoPath(String path) { setVideoURI(Uri.parse(path)); } public void setVideoURI(Uri uri) { setVideoURI(uri, null); } public void setVideoURI(Uri uri, Map<String, String> headers) { mUri = uri; mHeaders = headers; mSeekWhenPrepared = 0; openVideo(); requestLayout(); invalidate(); } public void stopPlayback() { if (mMediaPlayer != null) { mMediaPlayer.stop(); mMediaPlayer.release(); mMediaPlayer = null; mCurrentState = STATE_IDLE; mTargetState = STATE_IDLE; } } private void openVideo() { if (mUri == null || mSurface == null) { // not ready for playback just yet, will try again later return; } Context context = getContext(); // Tell the music playback service to pause Intent i = new Intent("com.android.music.musicservicecommand"); i.putExtra("command", "pause"); context.sendBroadcast(i); // we shouldn't clear the target state, because somebody might have // called start() previously release(false); try { mMediaPlayer = new MediaPlayer(); if (mAudioSession != 0) { mMediaPlayer.setAudioSessionId(mAudioSession); } else { mAudioSession = mMediaPlayer.getAudioSessionId(); } mMediaPlayer.setOnPreparedListener(mPreparedListener); mMediaPlayer.setOnVideoSizeChangedListener(mSizeChangedListener); mMediaPlayer.setOnCompletionListener(mCompletionListener); mMediaPlayer.setOnErrorListener(mErrorListener); mMediaPlayer.setOnBufferingUpdateListener(mBufferingUpdateListener); mCurrentBufferPercentage = 0; mMediaPlayer.setDataSource(context, mUri, mHeaders); mMediaPlayer.setSurface(mSurface); mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); mMediaPlayer.prepareAsync(); // we don't set the target state here either, but preserve the // target state that was there before. mCurrentState = STATE_PREPARING; attachMediaController(); } catch (IOException ex) { Log.w(String.format("Unable to open content: %s", mUri), ex); mCurrentState = STATE_ERROR; mTargetState = STATE_ERROR; mErrorListener.onError(mMediaPlayer, MediaPlayer.MEDIA_ERROR_UNKNOWN, 0); return; } catch (IllegalArgumentException ex) { Log.w(String.format("Unable to open content: %s", mUri), ex); mCurrentState = STATE_ERROR; mTargetState = STATE_ERROR; mErrorListener.onError(mMediaPlayer, MediaPlayer.MEDIA_ERROR_UNKNOWN, 0); return; } } public void setMediaController(MediaController controller) { if (mMediaController != null) { mMediaController.hide(); } mMediaController = controller; attachMediaController(); } private void attachMediaController() { if (mMediaPlayer != null && mMediaController != null) { mMediaController.setMediaPlayer(this); View anchorView = this.getParent() instanceof View ? (View) this.getParent() : this; mMediaController.setAnchorView(anchorView); mMediaController.setEnabled(isInPlaybackState()); } } MediaPlayer.OnVideoSizeChangedListener mSizeChangedListener = new MediaPlayer.OnVideoSizeChangedListener() { @Override public void onVideoSizeChanged(MediaPlayer mp, int width, int height) { mVideoWidth = mp.getVideoWidth(); mVideoHeight = mp.getVideoHeight(); if (mVideoWidth != 0 && mVideoHeight != 0) { // TODO fixed size requestLayout(); } } }; MediaPlayer.OnPreparedListener mPreparedListener = new MediaPlayer.OnPreparedListener() { @SuppressLint("NewApi") @Override public void onPrepared(MediaPlayer mp) { // briefly show the mediacontroller mCurrentState = STATE_PREPARED; // TODO Get the capabilities of the player for this stream... mCanPause = mCanSeekBack = mCanSeekForward = true; if (mOnPreparedListener != null) { mOnPreparedListener.onPrepared(mMediaPlayer); } if (mMediaController != null) { mMediaController.setEnabled(true); } int seekToPosition = mSeekWhenPrepared; // mSeekWhenPrepared may be changed after seekTo() call if (seekToPosition != 0) { seekTo(seekToPosition); } if (mVideoWidth != 0 && mVideoHeight != 0) { //Log.i("@@@@", "video size: " + mVideoWidth +"/"+ mVideoHeight); //getHolder().setFixedSize(mVideoWidth, mVideoHeight); if (mSurfaceWidth == mVideoWidth && mSurfaceHeight == mVideoHeight) { // We didn't actually change the size (it was already at the size // we need), so we won't get a "surface changed" callback, so // start the video here instead of in the callback. if (mTargetState == STATE_PLAYING) { start(); if (mMediaController != null) { mMediaController.show(); } } else if (!isPlaying() && (seekToPosition != 0 || getCurrentPosition() > 0)) { if (mMediaController != null) { // Show the media controls when we're paused into a video and make 'em stick. mMediaController.show(0); } } } } else { // We don't know the video size yet, but should start anyway. // The video size might be reported to us later. if (mTargetState == STATE_PLAYING) { start(); } } } }; private MediaPlayer.OnCompletionListener mCompletionListener = new MediaPlayer.OnCompletionListener() { @Override public void onCompletion(MediaPlayer mp) { mCurrentState = STATE_PLAYBACK_COMPLETED; mTargetState = STATE_PLAYBACK_COMPLETED; if (mMediaController != null) { mMediaController.hide(); } if (mOnCompletionListener != null) { mOnCompletionListener.onCompletion(mMediaPlayer); } } }; private MediaPlayer.OnInfoListener mInfoListener = new MediaPlayer.OnInfoListener() { public boolean onInfo(MediaPlayer mp, int arg1, int arg2) { if (mOnInfoListener != null) { mOnInfoListener.onInfo(mp, arg1, arg2); } return true; } }; private MediaPlayer.OnErrorListener mErrorListener = new MediaPlayer.OnErrorListener() { @Override public boolean onError(MediaPlayer mp, int frameworkErr, int implErr) { mCurrentState = STATE_ERROR; mTargetState = STATE_ERROR; if (mMediaController != null) { mMediaController.hide(); } if (mOnErrorListener != null) { if (mOnErrorListener.onError(mp, frameworkErr, implErr)) { return true; } } /* Otherwise, pop up an error dialog so the user knows that * something bad has happened. Only try and pop up the dialog * if we're attached to a window. When we're going away and no * longer have a window, don't bother showing the user an error. */ if (getWindowToken() != null) { Resources r = getContext().getResources(); int messageId; if (frameworkErr == MediaPlayer.MEDIA_ERROR_NOT_VALID_FOR_PROGRESSIVE_PLAYBACK) { messageId = android.R.string.VideoView_error_text_invalid_progressive_playback; } else { messageId = android.R.string.VideoView_error_text_unknown; } new AlertDialog.Builder(getContext()) .setMessage(messageId) .setPositiveButton(android.R.string.VideoView_error_button, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { /* If we get here, there is no onError listener, so * at least inform them that the video is over. */ if (mOnCompletionListener != null) { mOnCompletionListener.onCompletion(mMediaPlayer); } } } ) .setCancelable(false) .show(); } return true; } }; private MediaPlayer.OnBufferingUpdateListener mBufferingUpdateListener = new MediaPlayer.OnBufferingUpdateListener() { @Override public void onBufferingUpdate(MediaPlayer mp, int percent) { mCurrentBufferPercentage = percent; if (mOnBufferingUpdateListener != null) { mOnBufferingUpdateListener.onBufferingUpdate(mp, percent); } } }; /** * Register a callback to be invoked when the media file * is loaded and ready to go. * * @param l The callback that will be run */ public void setOnPreparedListener(MediaPlayer.OnPreparedListener l) { mOnPreparedListener = l; } /** * Register a callback to be invoked when the end of a media file * has been reached during playback. * * @param l The callback that will be run */ public void setOnCompletionListener(MediaPlayer.OnCompletionListener l) { mOnCompletionListener = l; } /** * Register a callback to be invoked when an error occurs * during playback or setup. If no listener is specified, * or if the listener returned false, VideoView will inform * the user of any errors. * * @param l The callback that will be run */ public void setOnErrorListener(MediaPlayer.OnErrorListener l) { mOnErrorListener = l; } /** * Register a callback to be invoked when an informational event * occurs during playback or setup. * * @param l The callback that will be run */ public void setOnInfoListener(MediaPlayer.OnInfoListener l) { mOnInfoListener = l; } private SurfaceTextureListener mSurfaceTextureListener = new SurfaceTextureListener() { @Override public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) { if (mOnSurfaceTextureListener != null) { mOnSurfaceTextureListener.onSurfaceTextureAvailable(surface, width, height); } mSurfaceWidth = width; mSurfaceHeight = height; mSurface = new Surface(surface); openVideo(); } @Override public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) { if (mOnSurfaceTextureListener != null) { mOnSurfaceTextureListener.onSurfaceTextureSizeChanged(surface, width, height); } mSurfaceWidth = width; mSurfaceHeight = height; boolean isValidState = (mTargetState == STATE_PLAYING); boolean hasValidSize = (mVideoWidth == width && mVideoHeight == height); if (mMediaPlayer != null && isValidState && hasValidSize) { if (mSeekWhenPrepared != 0) { seekTo(mSeekWhenPrepared); } start(); } } @Override public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) { if (mMediaController != null) { mMediaController.hide(); } release(true); if (mOnSurfaceTextureListener != null) { if (mOnSurfaceTextureListener.onSurfaceTextureDestroyed(surface)) return true; } if (mSurface != null) { mSurface.release(); mSurface = null; } return true; } @Override public void onSurfaceTextureUpdated(SurfaceTexture surface) { if (mOnSurfaceTextureListener != null) { mOnSurfaceTextureListener.onSurfaceTextureUpdated(surface); } } }; /* * release the media player in any state */ private void release(boolean cleartargetstate) { if (mMediaPlayer != null) { mMediaPlayer.reset(); mMediaPlayer.release(); mMediaPlayer = null; mCurrentState = STATE_IDLE; if (cleartargetstate) { mTargetState = STATE_IDLE; } } } @Override public boolean onTouchEvent(MotionEvent event) { if (isInPlaybackState() && mMediaController != null) { toggleMediaControlsVisibility(); } return false; } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { boolean isKeyCodeSupported = keyCode != KeyEvent.KEYCODE_BACK && keyCode != KeyEvent.KEYCODE_VOLUME_UP && keyCode != KeyEvent.KEYCODE_VOLUME_DOWN && keyCode != KeyEvent.KEYCODE_VOLUME_MUTE && keyCode != KeyEvent.KEYCODE_MENU && keyCode != KeyEvent.KEYCODE_CALL && keyCode != KeyEvent.KEYCODE_ENDCALL; if (isInPlaybackState() && isKeyCodeSupported && mMediaController != null) { if (keyCode == KeyEvent.KEYCODE_HEADSETHOOK || keyCode == KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE) { if (mMediaPlayer.isPlaying()) { pause(); mMediaController.show(); } else { start(); mMediaController.hide(); } return true; } else if (keyCode == KeyEvent.KEYCODE_MEDIA_PLAY) { if (!mMediaPlayer.isPlaying()) { start(); mMediaController.hide(); } return true; } else if (keyCode == KeyEvent.KEYCODE_MEDIA_STOP || keyCode == KeyEvent.KEYCODE_MEDIA_PAUSE) { if (mMediaPlayer.isPlaying()) { pause(); mMediaController.show(); } return true; } else { toggleMediaControlsVisibility(); } } return super.onKeyDown(keyCode, event); } private void toggleMediaControlsVisibility() { if (mMediaController.isShowing()) { mMediaController.hide(); } else { mMediaController.show(); } } @Override public void start() { if (isInPlaybackState()) { mMediaPlayer.start(); mCurrentState = STATE_PLAYING; } mTargetState = STATE_PLAYING; } @Override public void pause() { if (isInPlaybackState()) { if (mMediaPlayer.isPlaying()) { mMediaPlayer.pause(); mCurrentState = STATE_PAUSED; } } mTargetState = STATE_PAUSED; } public void suspend() { release(false); } public void resume() { openVideo(); } @Override public int getDuration() { if (isInPlaybackState()) { return mMediaPlayer.getDuration(); } return -1; } @Override public int getCurrentPosition() { if (isInPlaybackState()) { return mMediaPlayer.getCurrentPosition(); } return 0; } @Override public void seekTo(int msec) { if (isInPlaybackState()) { mMediaPlayer.seekTo(msec); mSeekWhenPrepared = 0; } else { mSeekWhenPrepared = msec; } } @Override public boolean isPlaying() { return isInPlaybackState() && mMediaPlayer.isPlaying(); } @Override public int getBufferPercentage() { if (mMediaPlayer != null) { return mCurrentBufferPercentage; } return 0; } private boolean isInPlaybackState() { return (mMediaPlayer != null && mCurrentState != STATE_ERROR && mCurrentState != STATE_IDLE && mCurrentState != STATE_PREPARING); } @Override public boolean canPause() { return mCanPause; } @Override public boolean canSeekBackward() { return mCanSeekBack; } @Override public boolean canSeekForward() { return mCanSeekForward; } /** * Get the audio session id for the player used by this VideoView. This can be used to apply audio effects to the audio track of a video. * * @return The audio session, or 0 if there was an error. */ @Override public int getAudioSessionId() { if (mAudioSession == 0) { MediaPlayer foo = new MediaPlayer(); mAudioSession = foo.getAudioSessionId(); foo.release(); } return mAudioSession; } }