src/com/android/gallery3d/app/TrimVideo.java - platform/packages/apps/Gallery2 - Git at Google

 /*
  * Copyright (C) 2012 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.gallery3d.app;

 import android.app.ActionBar;
 import android.app.Activity;
 import android.app.ProgressDialog;
 import android.content.Context;
 import android.content.Intent;
 import android.media.MediaPlayer;
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.Handler;
 import android.provider.MediaStore;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.Window;
 import android.widget.TextView;
 import android.widget.Toast;
 import android.widget.VideoView;

 import com.android.gallery3d.R;
 import com.android.gallery3d.util.SaveVideoFileInfo;
 import com.android.gallery3d.util.SaveVideoFileUtils;

 import java.io.File;
 import java.io.IOException;

 public class TrimVideo extends Activity implements
         MediaPlayer.OnErrorListener,
         MediaPlayer.OnCompletionListener,
         ControllerOverlay.Listener {

     private VideoView mVideoView;
     private TextView mSaveVideoTextView;
     private TrimControllerOverlay mController;
     private Context mContext;
     private Uri mUri;
     private final Handler mHandler = new Handler();
     public static final String TRIM_ACTION = "com.android.camera.action.TRIM";

     public ProgressDialog mProgress;

     private int mTrimStartTime = 0;
     private int mTrimEndTime = 0;
     private int mVideoPosition = 0;
     public static final String KEY_TRIM_START = "trim_start";
     public static final String KEY_TRIM_END = "trim_end";
     public static final String KEY_VIDEO_POSITION = "video_pos";
     private boolean mHasPaused = false;

     private String mSrcVideoPath = null;
     private static final String TIME_STAMP_NAME = "'TRIM'_yyyyMMdd_HHmmss";
     private SaveVideoFileInfo mDstFileInfo = null;

     @Override
     public void onCreate(Bundle savedInstanceState) {
         mContext = getApplicationContext();
         super.onCreate(savedInstanceState);

         requestWindowFeature(Window.FEATURE_ACTION_BAR);
         requestWindowFeature(Window.FEATURE_ACTION_BAR_OVERLAY);

         ActionBar actionBar = getActionBar();
         int displayOptions = ActionBar.DISPLAY_SHOW_HOME;
         actionBar.setDisplayOptions(0, displayOptions);
         displayOptions = ActionBar.DISPLAY_SHOW_CUSTOM;
         actionBar.setDisplayOptions(displayOptions, displayOptions);
         actionBar.setCustomView(R.layout.trim_menu);

         mSaveVideoTextView = (TextView) findViewById(R.id.start_trim);
         mSaveVideoTextView.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View arg0) {
                 trimVideo();
             }
         });
         mSaveVideoTextView.setEnabled(false);

         Intent intent = getIntent();
         mUri = intent.getData();
         mSrcVideoPath = intent.getStringExtra(PhotoPage.KEY_MEDIA_ITEM_PATH);
         setContentView(R.layout.trim_view);
         View rootView = findViewById(R.id.trim_view_root);

         mVideoView = (VideoView) rootView.findViewById(R.id.surface_view);

         mController = new TrimControllerOverlay(mContext);
         ((ViewGroup) rootView).addView(mController.getView());
         mController.setListener(this);
         mController.setCanReplay(true);

         mVideoView.setOnErrorListener(this);
         mVideoView.setOnCompletionListener(this);
         mVideoView.setVideoURI(mUri);

         playVideo();
     }

     @Override
     public void onResume() {
         super.onResume();
         if (mHasPaused) {
             mVideoView.seekTo(mVideoPosition);
             mVideoView.resume();
             mHasPaused = false;
         }
         mHandler.post(mProgressChecker);
     }

     @Override
     public void onPause() {
         mHasPaused = true;
         mHandler.removeCallbacksAndMessages(null);
         mVideoPosition = mVideoView.getCurrentPosition();
         mVideoView.suspend();
         super.onPause();
     }

     @Override
     public void onStop() {
         if (mProgress != null) {
             mProgress.dismiss();
             mProgress = null;
         }
         super.onStop();
     }

     @Override
     public void onDestroy() {
         mVideoView.stopPlayback();
         super.onDestroy();
     }

     private final Runnable mProgressChecker = new Runnable() {
         @Override
         public void run() {
             int pos = setProgress();
             mHandler.postDelayed(mProgressChecker, 200 - (pos % 200));
         }
     };

     @Override
     public void onSaveInstanceState(Bundle savedInstanceState) {
         savedInstanceState.putInt(KEY_TRIM_START, mTrimStartTime);
         savedInstanceState.putInt(KEY_TRIM_END, mTrimEndTime);
         savedInstanceState.putInt(KEY_VIDEO_POSITION, mVideoPosition);
         super.onSaveInstanceState(savedInstanceState);
     }

     @Override
     public void onRestoreInstanceState(Bundle savedInstanceState) {
         super.onRestoreInstanceState(savedInstanceState);
         mTrimStartTime = savedInstanceState.getInt(KEY_TRIM_START, 0);
         mTrimEndTime = savedInstanceState.getInt(KEY_TRIM_END, 0);
         mVideoPosition = savedInstanceState.getInt(KEY_VIDEO_POSITION, 0);
     }

     // This updates the time bar display (if necessary). It is called by
     // mProgressChecker and also from places where the time bar needs
     // to be updated immediately.
     private int setProgress() {
         mVideoPosition = mVideoView.getCurrentPosition();
         // If the video position is smaller than the starting point of trimming,
         // correct it.
         if (mVideoPosition < mTrimStartTime) {
             mVideoView.seekTo(mTrimStartTime);
             mVideoPosition = mTrimStartTime;
         }
         // If the position is bigger than the end point of trimming, show the
         // replay button and pause.
         if (mVideoPosition >= mTrimEndTime && mTrimEndTime > 0) {
             if (mVideoPosition > mTrimEndTime) {
                 mVideoView.seekTo(mTrimEndTime);
                 mVideoPosition = mTrimEndTime;
             }
             mController.showEnded();
             mVideoView.pause();
         }

         int duration = mVideoView.getDuration();
         if (duration > 0 && mTrimEndTime == 0) {
             mTrimEndTime = duration;
         }
         mController.setTimes(mVideoPosition, duration, mTrimStartTime, mTrimEndTime);
         // Enable save if there's modifications
         mSaveVideoTextView.setEnabled(isModified());
         return mVideoPosition;
     }

     private void playVideo() {
         mVideoView.start();
         mController.showPlaying();
         setProgress();
     }

     private void pauseVideo() {
         mVideoView.pause();
         mController.showPaused();
     }


     private boolean isModified() {
         int delta = mTrimEndTime - mTrimStartTime;

         // Considering that we only trim at sync frame, we don't want to trim
         // when the time interval is too short or too close to the origin.
         if (delta < 100 || Math.abs(mVideoView.getDuration() - delta) < 100) {
             return false;
         } else {
             return true;
         }
     }

     private void trimVideo() {

         mDstFileInfo = SaveVideoFileUtils.getDstMp4FileInfo(TIME_STAMP_NAME,
                 getContentResolver(), mUri, getString(R.string.folder_download));
         final File mSrcFile = new File(mSrcVideoPath);

         showProgressDialog();

         new Thread(new Runnable() {
             @Override
             public void run() {
                 try {
                     VideoUtils.startTrim(mSrcFile, mDstFileInfo.mFile,
                             mTrimStartTime, mTrimEndTime);
                     // Update the database for adding a new video file.
                     SaveVideoFileUtils.insertContent(mDstFileInfo,
                             getContentResolver(), mUri);
                 } catch (IOException e) {
                     e.printStackTrace();
                 }
                 // After trimming is done, trigger the UI changed.
                 mHandler.post(new Runnable() {
                     @Override
                     public void run() {
                         Toast.makeText(getApplicationContext(),
                             getString(R.string.save_into, mDstFileInfo.mFolderName),
                             Toast.LENGTH_SHORT)
                             .show();
                         // TODO: change trimming into a service to avoid
                         // this progressDialog and add notification properly.
                         if (mProgress != null) {
                             mProgress.dismiss();
                             mProgress = null;
                             // Show the result only when the activity not stopped.
                             Intent intent = new Intent(android.content.Intent.ACTION_VIEW);
                             intent.setDataAndType(Uri.fromFile(mDstFileInfo.mFile), "video/*");
                             intent.putExtra(MediaStore.EXTRA_FINISH_ON_COMPLETION, false);
                             startActivity(intent);
                             finish();
                         }
                     }
                 });
             }
         }).start();
     }

     private void showProgressDialog() {
         // create a background thread to trim the video.
         // and show the progress.
         mProgress = new ProgressDialog(this);
         mProgress.setTitle(getString(R.string.trimming));
         mProgress.setMessage(getString(R.string.please_wait));
         // TODO: make this cancelable.
         mProgress.setCancelable(false);
         mProgress.setCanceledOnTouchOutside(false);
         mProgress.show();
     }

     @Override
     public void onPlayPause() {
         if (mVideoView.isPlaying()) {
             pauseVideo();
         } else {
             playVideo();
         }
     }

     @Override
     public void onSeekStart() {
         pauseVideo();
     }

     @Override
     public void onSeekMove(int time) {
         mVideoView.seekTo(time);
     }

     @Override
     public void onSeekEnd(int time, int start, int end) {
         mVideoView.seekTo(time);
         mTrimStartTime = start;
         mTrimEndTime = end;
         setProgress();
     }

     @Override
     public void onShown() {
     }

     @Override
     public void onHidden() {
     }

     @Override
     public void onReplay() {
         mVideoView.seekTo(mTrimStartTime);
         playVideo();
     }

     @Override
     public void onCompletion(MediaPlayer mp) {
         mController.showEnded();
     }

     @Override
     public boolean onError(MediaPlayer mp, int what, int extra) {
         return false;
     }
 }
	/*
	* Copyright (C) 2012 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.gallery3d.app;

	import android.app.ActionBar;
	import android.app.Activity;
	import android.app.ProgressDialog;
	import android.content.Context;
	import android.content.Intent;
	import android.media.MediaPlayer;
	import android.net.Uri;
	import android.os.Bundle;
	import android.os.Handler;
	import android.provider.MediaStore;
	import android.view.View;
	import android.view.ViewGroup;
	import android.view.Window;
	import android.widget.TextView;
	import android.widget.Toast;
	import android.widget.VideoView;

	import com.android.gallery3d.R;
	import com.android.gallery3d.util.SaveVideoFileInfo;
	import com.android.gallery3d.util.SaveVideoFileUtils;

	import java.io.File;
	import java.io.IOException;

	public class TrimVideo extends Activity implements
	MediaPlayer.OnErrorListener,
	MediaPlayer.OnCompletionListener,
	ControllerOverlay.Listener {

	private VideoView mVideoView;
	private TextView mSaveVideoTextView;
	private TrimControllerOverlay mController;
	private Context mContext;
	private Uri mUri;
	private final Handler mHandler = new Handler();
	public static final String TRIM_ACTION = "com.android.camera.action.TRIM";

	public ProgressDialog mProgress;

	private int mTrimStartTime = 0;
	private int mTrimEndTime = 0;
	private int mVideoPosition = 0;
	public static final String KEY_TRIM_START = "trim_start";
	public static final String KEY_TRIM_END = "trim_end";
	public static final String KEY_VIDEO_POSITION = "video_pos";
	private boolean mHasPaused = false;

	private String mSrcVideoPath = null;
	private static final String TIME_STAMP_NAME = "'TRIM'_yyyyMMdd_HHmmss";
	private SaveVideoFileInfo mDstFileInfo = null;

	@Override
	public void onCreate(Bundle savedInstanceState) {
	mContext = getApplicationContext();
	super.onCreate(savedInstanceState);

	requestWindowFeature(Window.FEATURE_ACTION_BAR);
	requestWindowFeature(Window.FEATURE_ACTION_BAR_OVERLAY);

	ActionBar actionBar = getActionBar();
	int displayOptions = ActionBar.DISPLAY_SHOW_HOME;
	actionBar.setDisplayOptions(0, displayOptions);
	displayOptions = ActionBar.DISPLAY_SHOW_CUSTOM;
	actionBar.setDisplayOptions(displayOptions, displayOptions);
	actionBar.setCustomView(R.layout.trim_menu);

	mSaveVideoTextView = (TextView) findViewById(R.id.start_trim);
	mSaveVideoTextView.setOnClickListener(new View.OnClickListener() {
	@Override
	public void onClick(View arg0) {
	trimVideo();
	}
	});
	mSaveVideoTextView.setEnabled(false);

	Intent intent = getIntent();
	mUri = intent.getData();
	mSrcVideoPath = intent.getStringExtra(PhotoPage.KEY_MEDIA_ITEM_PATH);
	setContentView(R.layout.trim_view);
	View rootView = findViewById(R.id.trim_view_root);

	mVideoView = (VideoView) rootView.findViewById(R.id.surface_view);

	mController = new TrimControllerOverlay(mContext);
	((ViewGroup) rootView).addView(mController.getView());
	mController.setListener(this);
	mController.setCanReplay(true);

	mVideoView.setOnErrorListener(this);
	mVideoView.setOnCompletionListener(this);
	mVideoView.setVideoURI(mUri);

	playVideo();
	}

	@Override
	public void onResume() {
	super.onResume();
	if (mHasPaused) {
	mVideoView.seekTo(mVideoPosition);
	mVideoView.resume();
	mHasPaused = false;
	}
	mHandler.post(mProgressChecker);
	}

	@Override
	public void onPause() {
	mHasPaused = true;
	mHandler.removeCallbacksAndMessages(null);
	mVideoPosition = mVideoView.getCurrentPosition();
	mVideoView.suspend();
	super.onPause();
	}

	@Override
	public void onStop() {
	if (mProgress != null) {
	mProgress.dismiss();
	mProgress = null;
	}
	super.onStop();
	}

	@Override
	public void onDestroy() {
	mVideoView.stopPlayback();
	super.onDestroy();
	}

	private final Runnable mProgressChecker = new Runnable() {
	@Override
	public void run() {
	int pos = setProgress();
	mHandler.postDelayed(mProgressChecker, 200 - (pos % 200));
	}
	};

	@Override
	public void onSaveInstanceState(Bundle savedInstanceState) {
	savedInstanceState.putInt(KEY_TRIM_START, mTrimStartTime);
	savedInstanceState.putInt(KEY_TRIM_END, mTrimEndTime);
	savedInstanceState.putInt(KEY_VIDEO_POSITION, mVideoPosition);
	super.onSaveInstanceState(savedInstanceState);
	}

	@Override
	public void onRestoreInstanceState(Bundle savedInstanceState) {
	super.onRestoreInstanceState(savedInstanceState);
	mTrimStartTime = savedInstanceState.getInt(KEY_TRIM_START, 0);
	mTrimEndTime = savedInstanceState.getInt(KEY_TRIM_END, 0);
	mVideoPosition = savedInstanceState.getInt(KEY_VIDEO_POSITION, 0);
	}

	// This updates the time bar display (if necessary). It is called by
	// mProgressChecker and also from places where the time bar needs
	// to be updated immediately.
	private int setProgress() {
	mVideoPosition = mVideoView.getCurrentPosition();
	// If the video position is smaller than the starting point of trimming,
	// correct it.
	if (mVideoPosition < mTrimStartTime) {
	mVideoView.seekTo(mTrimStartTime);
	mVideoPosition = mTrimStartTime;
	}
	// If the position is bigger than the end point of trimming, show the
	// replay button and pause.
	if (mVideoPosition >= mTrimEndTime && mTrimEndTime > 0) {
	if (mVideoPosition > mTrimEndTime) {
	mVideoView.seekTo(mTrimEndTime);
	mVideoPosition = mTrimEndTime;
	}
	mController.showEnded();
	mVideoView.pause();
	}

	int duration = mVideoView.getDuration();
	if (duration > 0 && mTrimEndTime == 0) {
	mTrimEndTime = duration;
	}
	mController.setTimes(mVideoPosition, duration, mTrimStartTime, mTrimEndTime);
	// Enable save if there's modifications
	mSaveVideoTextView.setEnabled(isModified());
	return mVideoPosition;
	}

	private void playVideo() {
	mVideoView.start();
	mController.showPlaying();
	setProgress();
	}

	private void pauseVideo() {
	mVideoView.pause();
	mController.showPaused();
	}


	private boolean isModified() {
	int delta = mTrimEndTime - mTrimStartTime;

	// Considering that we only trim at sync frame, we don't want to trim
	// when the time interval is too short or too close to the origin.
	if (delta < 100 \|\| Math.abs(mVideoView.getDuration() - delta) < 100) {
	return false;
	} else {
	return true;
	}
	}

	private void trimVideo() {

	mDstFileInfo = SaveVideoFileUtils.getDstMp4FileInfo(TIME_STAMP_NAME,
	getContentResolver(), mUri, getString(R.string.folder_download));
	final File mSrcFile = new File(mSrcVideoPath);

	showProgressDialog();

	new Thread(new Runnable() {
	@Override
	public void run() {
	try {
	VideoUtils.startTrim(mSrcFile, mDstFileInfo.mFile,
	mTrimStartTime, mTrimEndTime);
	// Update the database for adding a new video file.
	SaveVideoFileUtils.insertContent(mDstFileInfo,
	getContentResolver(), mUri);
	} catch (IOException e) {
	e.printStackTrace();
	}
	// After trimming is done, trigger the UI changed.
	mHandler.post(new Runnable() {
	@Override
	public void run() {
	Toast.makeText(getApplicationContext(),
	getString(R.string.save_into, mDstFileInfo.mFolderName),
	Toast.LENGTH_SHORT)
	.show();
	// TODO: change trimming into a service to avoid
	// this progressDialog and add notification properly.
	if (mProgress != null) {
	mProgress.dismiss();
	mProgress = null;
	// Show the result only when the activity not stopped.
	Intent intent = new Intent(android.content.Intent.ACTION_VIEW);
	intent.setDataAndType(Uri.fromFile(mDstFileInfo.mFile), "video/*");
	intent.putExtra(MediaStore.EXTRA_FINISH_ON_COMPLETION, false);
	startActivity(intent);
	finish();
	}
	}
	});
	}
	}).start();
	}

	private void showProgressDialog() {
	// create a background thread to trim the video.
	// and show the progress.
	mProgress = new ProgressDialog(this);
	mProgress.setTitle(getString(R.string.trimming));
	mProgress.setMessage(getString(R.string.please_wait));
	// TODO: make this cancelable.
	mProgress.setCancelable(false);
	mProgress.setCanceledOnTouchOutside(false);
	mProgress.show();
	}

	@Override
	public void onPlayPause() {
	if (mVideoView.isPlaying()) {
	pauseVideo();
	} else {
	playVideo();
	}
	}

	@Override
	public void onSeekStart() {
	pauseVideo();
	}

	@Override
	public void onSeekMove(int time) {
	mVideoView.seekTo(time);
	}

	@Override
	public void onSeekEnd(int time, int start, int end) {
	mVideoView.seekTo(time);
	mTrimStartTime = start;
	mTrimEndTime = end;
	setProgress();
	}

	@Override
	public void onShown() {
	}

	@Override
	public void onHidden() {
	}

	@Override
	public void onReplay() {
	mVideoView.seekTo(mTrimStartTime);
	playVideo();
	}

	@Override
	public void onCompletion(MediaPlayer mp) {
	mController.showEnded();
	}

	@Override
	public boolean onError(MediaPlayer mp, int what, int extra) {
	return false;
	}
	}