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bmeikebmeike
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Merge branch 'master' of github.com:bmeike/ProgrammingAndroidExamples
2 parents 14af122 + 74b3263 commit 0d3e471

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2 files changed

+165
-148
lines changed

2 files changed

+165
-148
lines changed

‎14/AudioPlayer/src/com/oreilly/demo/pa/ch14/AudioPlayerWAudioTrack.java‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -133,8 +133,8 @@ private void initializeAudioTrack() {
133133
// create AudioTrack
134134
audiotrack = new AudioTrack(
135135
AudioManager.STREAM_MUSIC, // stream type
136-
11025, // frequency
137-
AudioFormat.CHANNEL_CONFIGURATION_MONO, // channel config.. mono, stereo, etc
136+
44100, // frequency
137+
AudioFormat.CHANNEL_IN_MONO, // channel config.. mono, stereo, etc
138138
AudioFormat.ENCODING_PCM_16BIT, // audio encoding
139139
audio.length, // length
140140
AudioTrack.MODE_STREAM // mode

‎14/AudioPlayer/src/com/oreilly/demo/pa/ch14/AudioRecorderWAudioRecord.java‎

Lines changed: 163 additions & 146 deletions
Original file line numberDiff line numberDiff line change
@@ -18,152 +18,169 @@
1818
import android.view.View.OnClickListener;
1919
import android.widget.ImageButton;
2020
import android.widget.TextView;
21+
import android.widget.Toast;
2122

2223
public class AudioRecorderWAudioRecord extends Activity implements Runnable {
23-
private static final String MEDIAFILE= "/sdcard/audiorecordwaudiorecordexample.pcm";
24-
25-
private AudioRecord recorder;
26-
private DataOutputStream dos;
27-
private boolean recordablestate = false;
28-
private int time = 0;
29-
30-
@Override
31-
public void onCreate(Bundle savedInstanceState) {
32-
super.onCreate(savedInstanceState);
33-
34-
setupView();
35-
}
36-
37-
@Override
38-
public void onDestroy() {
39-
super.onDestroy();
40-
stopRecord();
41-
}
42-
43-
private void setupView() {
44-
setContentView(R.layout.audiorecorder);
45-
46-
findViewById(R.id.recordstop).setOnClickListener(new OnClickListener() {
47-
48-
@Override
49-
public void onClick(View v) {
50-
recordOrStop();
51-
}
52-
53-
});
54-
55-
findViewById(R.id.play).setOnClickListener(new OnClickListener() {
56-
57-
@Override
58-
public void onClick(View v) {
59-
playAudio();
60-
}
61-
62-
});
63-
}
64-
65-
private void recordOrStop() {
66-
if(!recordablestate) {
67-
try {
68-
recordablestate = true;
69-
ImageButton button = (ImageButton) findViewById(R.id.recordstop);
70-
button.setImageResource(R.drawable.stop);
71-
findViewById(R.id.play).setVisibility(View.GONE);
72-
73-
File mediafile = new File(MEDIAFILE);
74-
if(mediafile.exists()) { // delete mediafile if it already exists
75-
mediafile.delete();
76-
}
77-
78-
// create mediafile
79-
mediafile.createNewFile();
80-
81-
// setup DataOutputStream to write to file
82-
dos = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(mediafile)));
83-
84-
// setup AudioRecord
85-
final short[] buffer = new short[10000];
86-
87-
recorder = new AudioRecord(MediaRecorder.AudioSource.MIC, // source to record from
88-
11025,// frequency
89-
AudioFormat.CHANNEL_CONFIGURATION_MONO,// channel config.. mono, stereo, etc
90-
AudioFormat.ENCODING_PCM_16BIT,// audio encoding
91-
buffer.length// buffer size
92-
);
93-
94-
// start recording in a separate thread
95-
(new Thread() {
96-
@Override
97-
public void run() {
98-
if(recorder != null) {
99-
recorder.startRecording();
100-
while(recordablestate) {
101-
try {
102-
int readBytes = recorder.read(buffer, 0, buffer.length); // read in up to buffer size
103-
for(int i=0;i<readBytes;i++) {
104-
dos.writeShort(buffer[i]); // write out to file
105-
}
106-
} catch (Exception t) {
107-
recordablestate = false;
108-
t.printStackTrace();
109-
}
110-
}
111-
stopRecord(); // stop recording
112-
}
113-
}
114-
}).start();
115-
116-
(new Thread(this)).start();
117-
} catch (Exception e) {
118-
e.printStackTrace();
119-
}
120-
} else {
121-
recordablestate = false;
122-
ImageButton button = (ImageButton) findViewById(R.id.recordstop);
123-
button.setImageResource(R.drawable.record);
124-
findViewById(R.id.play).setVisibility(View.VISIBLE);
125-
}
126-
}
127-
128-
private void stopRecord() {
129-
recordablestate = false;
130-
if(recorder != null) {
131-
try { recorder.stop(); } catch (IllegalStateException ise) { ise.printStackTrace(); }
132-
recorder.release();
133-
recorder = null;
134-
}
135-
if(dos != null) {
136-
try { dos.flush(); } catch (IOException io) { io.printStackTrace(); }
137-
try { dos.close(); } catch (IOException io) { io.printStackTrace(); }
138-
dos = null;
139-
}
140-
}
141-
142-
private final Handler timeupdater = new Handler() {
143-
@Override
144-
public void handleMessage(Message msg) {
145-
time++;
146-
((TextView) findViewById(R.id.time)).setText(""+time+" secs");
147-
}
148-
};
149-
150-
@Override
151-
public void run() {
152-
try {
153-
time = 0;
154-
timeupdater.sendEmptyMessage(0);
155-
while(recordablestate) {
156-
Thread.sleep(1000); // per sec
157-
timeupdater.sendEmptyMessage(0);
158-
}
159-
} catch (Exception t) { }
160-
}
161-
162-
private void playAudio() {
163-
finish();
164-
165-
Intent intent = new Intent(this, AudioPlayerWAudioTrack.class);
166-
intent.putExtra(AudioPlayer.AUDIOFILEPATH, MEDIAFILE);
167-
startActivity(intent);
168-
}
24+
private static final String MEDIAFILE= "/sdcard/audiorecordwaudiorecordexample.pcm";
25+
26+
private AudioRecord recorder;
27+
private DataOutputStream dos;
28+
private boolean recordablestate = false;
29+
private int time = 0;
30+
31+
@Override
32+
public void onCreate(Bundle savedInstanceState) {
33+
super.onCreate(savedInstanceState);
34+
35+
setupView();
36+
}
37+
38+
@Override
39+
public void onDestroy() {
40+
super.onDestroy();
41+
stopRecord();
42+
}
43+
44+
private void setupView() {
45+
setContentView(R.layout.audiorecorder);
46+
47+
findViewById(R.id.recordstop).setOnClickListener(new OnClickListener() {
48+
49+
@Override
50+
public void onClick(View v) {
51+
recordOrStop();
52+
}
53+
54+
});
55+
56+
findViewById(R.id.play).setOnClickListener(new OnClickListener() {
57+
58+
@Override
59+
public void onClick(View v) {
60+
playAudio();
61+
}
62+
63+
});
64+
}
65+
66+
private void recordOrStop() {
67+
if(!recordablestate) {
68+
try {
69+
recordablestate = true;
70+
ImageButton button = (ImageButton) findViewById(R.id.recordstop);
71+
button.setImageResource(R.drawable.stop);
72+
findViewById(R.id.play).setVisibility(View.GONE);
73+
74+
File mediafile = new File(MEDIAFILE);
75+
if(mediafile.exists()) { // delete mediafile if it already exists
76+
mediafile.delete();
77+
}
78+
79+
// create mediafile
80+
mediafile.createNewFile();
81+
82+
// setup DataOutputStream to write to file
83+
dos = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(mediafile)));
84+
85+
// setup AudioRecord
86+
final short[] buffer = new short[10000];
87+
88+
recorder = new AudioRecord(MediaRecorder.AudioSource.MIC, // source to record from
89+
44100,// frequency
90+
AudioFormat.CHANNEL_IN_MONO,// channel config.. mono, stereo, etc
91+
AudioFormat.ENCODING_PCM_16BIT,// audio encoding
92+
buffer.length// buffer size
93+
);
94+
95+
// start recording in a separate thread
96+
(new Thread() {
97+
@Override
98+
public void run() {
99+
if(recorder != null) {
100+
try {
101+
recorder.startRecording();
102+
} catch(IllegalStateException ise) {
103+
Message.obtain(notifyHandler, 0, "This is best run on a real device.").sendToTarget();
104+
recorder = null;
105+
recordablestate = false;
106+
}
107+
while(recordablestate) {
108+
try {
109+
int readBytes = recorder.read(buffer, 0, buffer.length); // read in up to buffer size
110+
for(int i=0;i<readBytes;i++) {
111+
dos.writeShort(buffer[i]); // write out to file
112+
}
113+
} catch (Exception t) {
114+
recordablestate = false;
115+
t.printStackTrace();
116+
}
117+
}
118+
stopRecord(); // stop recording
119+
}
120+
}
121+
}).start();
122+
123+
(new Thread(this)).start();
124+
} catch (Exception e) {
125+
e.printStackTrace();
126+
}
127+
} else {
128+
recordablestate = false;
129+
ImageButton button = (ImageButton) findViewById(R.id.recordstop);
130+
button.setImageResource(R.drawable.record);
131+
findViewById(R.id.play).setVisibility(View.VISIBLE);
132+
}
133+
}
134+
135+
private void stopRecord() {
136+
recordablestate = false;
137+
if(recorder != null) {
138+
try { recorder.stop(); } catch (IllegalStateException ise) { }
139+
recorder.release();
140+
recorder = null;
141+
}
142+
if(dos != null) {
143+
try { dos.flush(); } catch (IOException io) { }
144+
try { dos.close(); } catch (IOException io) { }
145+
dos = null;
146+
}
147+
}
148+
149+
private final Handler timeupdater = new Handler() {
150+
@Override
151+
public void handleMessage(Message msg) {
152+
time++;
153+
((TextView) findViewById(R.id.time)).setText(""+time+" secs");
154+
}
155+
};
156+
157+
@Override
158+
public void run() {
159+
try {
160+
time = 0;
161+
timeupdater.sendEmptyMessage(0);
162+
while(recordablestate) {
163+
Thread.sleep(1000); // per sec
164+
timeupdater.sendEmptyMessage(0);
165+
}
166+
} catch (Exception t) { }
167+
}
168+
169+
private void playAudio() {
170+
finish();
171+
172+
Intent intent = new Intent(this, AudioPlayerWAudioTrack.class);
173+
intent.putExtra(AudioPlayer.AUDIOFILEPATH, MEDIAFILE);
174+
startActivity(intent);
175+
}
176+
177+
private final Handler notifyHandler = new Handler() {
178+
public void handleMessage(Message msg) {
179+
if(msg.obj != null && msg.obj instanceof String) notifyMsg((String) msg.obj);
180+
}
181+
};
182+
183+
private void notifyMsg(String msg) {
184+
Toast.makeText(this, msg, Toast.LENGTH_SHORT).show();
185+
}
169186
}

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