1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
package com.example.capture;
import java.io.File;
import java.io.IOException;
import java.util.Date;
import android.app.Activity;
import android.content.Intent;
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.media.MediaRecorder;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.MenuItem;
import android.view.SurfaceHolder;
import android.view.SurfaceHolder.Callback;
import android.view.Menu;
import android.view.SurfaceView;
import android.widget.Toast;
//http://stackoverflow.com/questions/17042308/select-a-music-file-to-play-with-mediaplayer
//http://stackoverflow.com/questions/2709087/turning-a-string-into-a-uri-android
public class MainActivity extends Activity implements Callback {
@Override
protected void onDestroy() {
stopRecording();
super.onDestroy();
}
private SurfaceHolder surfaceHolder;
private SurfaceView surfaceView;
public MediaRecorder mrec = new MediaRecorder();
private Camera mCamera;
private Uri uriSound;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
surfaceView = (SurfaceView) findViewById(R.id.surface_camera);
mCamera = Camera.open();
surfaceHolder = surfaceView.getHolder();
surfaceHolder.addCallback(this);
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
uriSound=Uri.parse("");
}
@Override
public boolean onCreateOptionsMenu(Menu menu)
{
menu.add(0, 0, 0, "Start");
menu.add(0, 0, 0, "Pick audio track");
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item)
{
if(item.getTitle().equals("Start"))
{
try {
startRecording();
item.setTitle("Stop");
} catch (Exception e) {
String message = e.getMessage();
Log.i(null, "Problem " + message);
mrec.release();
}
}
else if(item.getTitle().equals("Stop"))
{
mrec.stop();
mrec.release();
mrec = null;
item.setTitle("Start");
}
else if(item.getTitle().equals("Pick audio track"))
{
Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(intent, 10);
}
return super.onOptionsItemSelected(item);
}
protected void startRecording() throws IOException
{
if(mCamera==null)
mCamera = Camera.open();
String filename;
String path;
path= Environment.getExternalStorageDirectory().getAbsolutePath().toString();
Date date=new Date();
filename="/rec"+date.toString().replace(" ", "_").replace(":", "_")+".mp4";
//create empty file it must use
File file=new File(path,filename);
mrec = new MediaRecorder();
mCamera.lock();
mCamera.unlock();
// Please maintain sequence of following code.
// If you change sequence it will not work.
mrec.setCamera(mCamera);
mrec.setVideoSource(MediaRecorder.VideoSource.CAMERA);
mrec.setAudioSource(MediaRecorder.AudioSource.MIC);
mrec.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
mrec.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP);
mrec.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
mrec.setPreviewDisplay(surfaceHolder.getSurface());
mrec.setOutputFile(path+filename);
mrec.prepare();
mrec.start();
}
protected void stopRecording() {
if(mrec!=null)
{
mrec.stop();
mrec.release();
mCamera.release();
mCamera.lock();
}
}
private void releaseMediaRecorder() {
if (mrec != null) {
mrec.reset(); // clear recorder configuration
mrec.release(); // release the recorder object
}
}
private void releaseCamera() {
if (mCamera != null) {
mCamera.release(); // release the camera for other applications
mCamera = null;
}
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,int height) {
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
if (mCamera != null) {
Parameters params = mCamera.getParameters();
mCamera.setParameters(params);
Log.i("Surface", "Created");
}
else {
Toast.makeText(getApplicationContext(), "Camera not available!",
Toast.LENGTH_LONG).show();
finish();
}
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
mCamera.stopPreview();
mCamera.release();
//http://stackoverflow.com/questions/13235306/method-called-after-release-exception-camera-preview
//mCamera=null;
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if(requestCode == RESULT_OK && requestCode == 10){
uriSound=data.getData();
}
}
}
|
