TrimVideo.java revision b5f374c30d06dc0409891f85a4bd5e1e3ddf8700 
1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.gallery3d.app;
18
19import android.app.ProgressDialog;
20import android.content.ContentResolver;
21import android.content.ContentValues;
22import android.content.Context;
23import android.content.Intent;
24import android.database.Cursor;
25import android.media.MediaPlayer;
26import android.net.Uri;
27import android.os.Bundle;
28import android.os.Environment;
29import android.os.Handler;
30import android.provider.MediaStore;
31import android.provider.MediaStore.Video;
32import android.provider.MediaStore.Video.VideoColumns;
33import android.view.View;
34import android.view.ViewGroup;
35import android.view.Window;
36import android.widget.TextView;
37import android.widget.Toast;
38import android.widget.VideoView;
39
40import com.actionbarsherlock.app.ActionBar;
41import com.actionbarsherlock.app.SherlockActivity;
42import com.android.gallery3d.R;
43import com.android.gallery3d.util.BucketNames;
44import com.android.gallery3d.util.SaveVideoFileInfo;
45import com.android.gallery3d.util.SaveVideoFileUtils;
46
47import java.io.File;
48import java.io.IOException;
49import java.sql.Date;
50import java.text.SimpleDateFormat;
51
52public class TrimVideo extends SherlockActivity implements
53        MediaPlayer.OnErrorListener,
54        MediaPlayer.OnCompletionListener,
55        ControllerOverlay.Listener {
56
57    private VideoView mVideoView;
58    private TextView mSaveVideoTextView;
59    private TrimControllerOverlay mController;
60    private Context mContext;
61    private Uri mUri;
62    private final Handler mHandler = new Handler();
63    public static final String TRIM_ACTION = "com.android.camera.action.TRIM";
64
65    public ProgressDialog mProgress;
66
67    private int mTrimStartTime = 0;
68    private int mTrimEndTime = 0;
69    private int mVideoPosition = 0;
70    public static final String KEY_TRIM_START = "trim_start";
71    public static final String KEY_TRIM_END = "trim_end";
72    public static final String KEY_VIDEO_POSITION = "video_pos";
73    private boolean mHasPaused = false;
74
75    private String mSrcVideoPath = null;
76    private static final String TIME_STAMP_NAME = "'TRIM'_yyyyMMdd_HHmmss";
77    private SaveVideoFileInfo mDstFileInfo = null;
78
79    @Override
80    public void onCreate(Bundle savedInstanceState) {
81        mContext = getApplicationContext();
82        super.onCreate(savedInstanceState);
83
84        requestWindowFeature(Window.FEATURE_ACTION_BAR);
85        requestWindowFeature(Window.FEATURE_ACTION_BAR_OVERLAY);
86
87        ActionBar actionBar = getSupportActionBar();
88        int displayOptions = ActionBar.DISPLAY_SHOW_HOME;
89        actionBar.setDisplayOptions(0, displayOptions);
90        displayOptions = ActionBar.DISPLAY_SHOW_CUSTOM;
91        actionBar.setDisplayOptions(displayOptions, displayOptions);
92        actionBar.setCustomView(R.layout.trim_menu);
93
94        mSaveVideoTextView = (TextView) findViewById(R.id.start_trim);
95        mSaveVideoTextView.setOnClickListener(new View.OnClickListener() {
96            @Override
97            public void onClick(View arg0) {
98                trimVideo();
99            }
100        });
101        mSaveVideoTextView.setEnabled(false);
102
103        Intent intent = getIntent();
104        mUri = intent.getData();
105        mSrcVideoPath = intent.getStringExtra(PhotoPage.KEY_MEDIA_ITEM_PATH);
106        setContentView(R.layout.trim_view);
107        View rootView = findViewById(R.id.trim_view_root);
108
109        mVideoView = (VideoView) rootView.findViewById(R.id.surface_view);
110
111        mController = new TrimControllerOverlay(mContext);
112        ((ViewGroup) rootView).addView(mController.getView());
113        mController.setListener(this);
114        mController.setCanReplay(true);
115
116        mVideoView.setOnErrorListener(this);
117        mVideoView.setOnCompletionListener(this);
118        mVideoView.setVideoURI(mUri);
119
120        playVideo();
121    }
122
123    @Override
124    public void onResume() {
125        super.onResume();
126        if (mHasPaused) {
127            mVideoView.seekTo(mVideoPosition);
128            mVideoView.resume();
129            mHasPaused = false;
130        }
131        mHandler.post(mProgressChecker);
132    }
133
134    @Override
135    public void onPause() {
136        mHasPaused = true;
137        mHandler.removeCallbacksAndMessages(null);
138        mVideoPosition = mVideoView.getCurrentPosition();
139        mVideoView.suspend();
140        super.onPause();
141    }
142
143    @Override
144    public void onStop() {
145        if (mProgress != null) {
146            mProgress.dismiss();
147            mProgress = null;
148        }
149        super.onStop();
150    }
151
152    @Override
153    public void onDestroy() {
154        mVideoView.stopPlayback();
155        super.onDestroy();
156    }
157
158    private final Runnable mProgressChecker = new Runnable() {
159        @Override
160        public void run() {
161            int pos = setProgress();
162            mHandler.postDelayed(mProgressChecker, 200 - (pos % 200));
163        }
164    };
165
166    @Override
167    public void onSaveInstanceState(Bundle savedInstanceState) {
168        savedInstanceState.putInt(KEY_TRIM_START, mTrimStartTime);
169        savedInstanceState.putInt(KEY_TRIM_END, mTrimEndTime);
170        savedInstanceState.putInt(KEY_VIDEO_POSITION, mVideoPosition);
171        super.onSaveInstanceState(savedInstanceState);
172    }
173
174    @Override
175    public void onRestoreInstanceState(Bundle savedInstanceState) {
176        super.onRestoreInstanceState(savedInstanceState);
177        mTrimStartTime = savedInstanceState.getInt(KEY_TRIM_START, 0);
178        mTrimEndTime = savedInstanceState.getInt(KEY_TRIM_END, 0);
179        mVideoPosition = savedInstanceState.getInt(KEY_VIDEO_POSITION, 0);
180    }
181
182    // This updates the time bar display (if necessary). It is called by
183    // mProgressChecker and also from places where the time bar needs
184    // to be updated immediately.
185    private int setProgress() {
186        mVideoPosition = mVideoView.getCurrentPosition();
187        // If the video position is smaller than the starting point of trimming,
188        // correct it.
189        if (mVideoPosition < mTrimStartTime) {
190            mVideoView.seekTo(mTrimStartTime);
191            mVideoPosition = mTrimStartTime;
192        }
193        // If the position is bigger than the end point of trimming, show the
194        // replay button and pause.
195        if (mVideoPosition >= mTrimEndTime && mTrimEndTime > 0) {
196            if (mVideoPosition > mTrimEndTime) {
197                mVideoView.seekTo(mTrimEndTime);
198                mVideoPosition = mTrimEndTime;
199            }
200            mController.showEnded();
201            mVideoView.pause();
202        }
203
204        int duration = mVideoView.getDuration();
205        if (duration > 0 && mTrimEndTime == 0) {
206            mTrimEndTime = duration;
207        }
208        mController.setTimes(mVideoPosition, duration, mTrimStartTime, mTrimEndTime);
209        return mVideoPosition;
210    }
211
212    private void playVideo() {
213        mVideoView.start();
214        mController.showPlaying();
215        setProgress();
216    }
217
218    private void pauseVideo() {
219        mVideoView.pause();
220        mController.showPaused();
221    }
222
223
224    private boolean isModified() {
225        int delta = mTrimEndTime - mTrimStartTime;
226
227        // Considering that we only trim at sync frame, we don't want to trim
228        // when the time interval is too short or too close to the origin.
229        if (delta < 100 || Math.abs(mVideoView.getDuration() - delta) < 100) {
230            return false;
231        } else {
232            return true;
233        }
234    }
235
236    private void trimVideo() {
237
238        mDstFileInfo = SaveVideoFileUtils.getDstMp4FileInfo(TIME_STAMP_NAME,
239                getContentResolver(), mUri, getString(R.string.folder_download));
240        final File mSrcFile = new File(mSrcVideoPath);
241
242        showProgressDialog();
243
244        new Thread(new Runnable() {
245            @Override
246            public void run() {
247                try {
248                    VideoUtils.startTrim(mSrcFile, mDstFileInfo.mFile,
249                            mTrimStartTime, mTrimEndTime, mVideoView.getDuration());
250                    // Update the database for adding a new video file.
251                    SaveVideoFileUtils.insertContent(mDstFileInfo,
252                            getContentResolver(), mUri);
253                } catch (IOException e) {
254                    e.printStackTrace();
255                }
256                // After trimming is done, trigger the UI changed.
257                mHandler.post(new Runnable() {
258                    @Override
259                    public void run() {
260                        Toast.makeText(getApplicationContext(),
261                            getString(R.string.save_into, mDstFileInfo.mFolderName),
262                            Toast.LENGTH_SHORT)
263                            .show();
264                        // TODO: change trimming into a service to avoid
265                        // this progressDialog and add notification properly.
266                        if (mProgress != null) {
267                            mProgress.dismiss();
268                            mProgress = null;
269                            // Show the result only when the activity not stopped.
270                            Intent intent = new Intent(android.content.Intent.ACTION_VIEW);
271                            intent.setDataAndType(Uri.fromFile(mDstFileInfo.mFile), "video/*");
272                            intent.putExtra(MediaStore.EXTRA_FINISH_ON_COMPLETION, false);
273                            startActivity(intent);
274                            finish();
275                        }
276                    }
277                });
278            }
279        }).start();
280    }
281
282    private void showProgressDialog() {
283        // create a background thread to trim the video.
284        // and show the progress.
285        mProgress = new ProgressDialog(this);
286        mProgress.setTitle(getString(R.string.trimming));
287        mProgress.setMessage(getString(R.string.please_wait));
288        // TODO: make this cancelable.
289        mProgress.setCancelable(false);
290        mProgress.setCanceledOnTouchOutside(false);
291        mProgress.show();
292    }
293
294    @Override
295    public void onPlayPause() {
296        if (mVideoView.isPlaying()) {
297            pauseVideo();
298        } else {
299            playVideo();
300        }
301    }
302
303    @Override
304    public void onSeekStart() {
305        pauseVideo();
306    }
307
308    @Override
309    public void onSeekMove(int time) {
310        mVideoView.seekTo(time);
311    }
312
313    @Override
314    public void onSeekEnd(int time, int start, int end) {
315        mVideoView.seekTo(time);
316        mTrimStartTime = start;
317        mTrimEndTime = end;
318        setProgress();
319        // Enable save if there's modifications
320        mSaveVideoTextView.setEnabled(isModified());
321    }
322
323    @Override
324    public void onShown() {
325    }
326
327    @Override
328    public void onHidden() {
329    }
330
331    @Override
332    public void onReplay() {
333        mVideoView.seekTo(mTrimStartTime);
334        playVideo();
335    }
336
337    @Override
338    public void onCompletion(MediaPlayer mp) {
339        mController.showEnded();
340    }
341
342    @Override
343    public boolean onError(MediaPlayer mp, int what, int extra) {
344        return false;
345    }
346}
347