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
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
|
/*
* Copyright (C) 2015 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 org.drrickorang.loopback;
import android.app.Application;
import android.content.Context;
import android.content.pm.PackageManager;
import android.content.res.Configuration;
import android.media.AudioFormat;
import android.media.AudioManager;
import android.media.AudioRecord;
import android.media.AudioTrack;
import android.media.MediaRecorder;
import android.os.Build;
import android.util.Log;
public class LoopbackApplication extends Application {
private int mSamplingRate = 48000;
private int mPlayBufferSizeInBytes = 0;
private int mRecordBuffSizeInBytes = 0;
private int mAudioThreadType = 0; //0:Java, 1:Native (JNI)
private int mMicSource = 3; //maps to MediaRecorder.AudioSource.VOICE_RECOGNITION;
public static final int AUDIO_THREAD_TYPE_JAVA = 0;
public static final int AUDIO_THREAD_TYPE_NATIVE = 1;
public static final int BYTES_PER_FRAME = 2;
public void setDefaults () {
if (isSafeToUseSles()) {
mAudioThreadType = AUDIO_THREAD_TYPE_NATIVE;
} else {
mAudioThreadType = AUDIO_THREAD_TYPE_JAVA;
}
computeDefaults();
}
int getSamplingRate() {
return mSamplingRate;
}
void setSamplingRate(int samplingRate) {
mSamplingRate = samplingRate;
}
int getAudioThreadType() {
return mAudioThreadType;
}
void setAudioThreadType(int audioThreadType) {
mAudioThreadType = audioThreadType;
}
int getMicSource() { return mMicSource; }
int mapMicSource(int threadType, int source) {
int mappedSource = 0;
// <item>DEFAULT</item>
// <item>MIC</item>
// <item>CAMCORDER</item>
// <item>VOICE_RECOGNITION</item>
// <item>VOICE_COMMUNICATION</item>
if(threadType == AUDIO_THREAD_TYPE_JAVA) {
switch (source) {
default:
case 0: //DEFAULT
mappedSource = MediaRecorder.AudioSource.DEFAULT;
break;
case 1: //MIC
mappedSource = MediaRecorder.AudioSource.MIC;
break;
case 2: //CAMCORDER
mappedSource = MediaRecorder.AudioSource.CAMCORDER;
break;
case 3: //VOICE_RECOGNITION
mappedSource = MediaRecorder.AudioSource.VOICE_RECOGNITION;
break;
case 4: //VOICE_COMMUNICATION
mappedSource = MediaRecorder.AudioSource.VOICE_COMMUNICATION;
break;
}
} else if (threadType == AUDIO_THREAD_TYPE_NATIVE ) {
//taken form OpenSLES_AndroidConfiguration.h
switch (source) {
default:
case 0: //DEFAULT
mappedSource = 0x00; //SL_ANDROID_RECORDING_PRESET_NONE
break;
case 1: //MIC
mappedSource = 0x01; //SL_ANDROID_RECORDING_PRESET_GENERIC
break;
case 2: //CAMCORDER
mappedSource = 0x02; //SL_ANDROID_RECORDING_PRESET_CAMCORDER
break;
case 3: //VOICE_RECOGNITION
mappedSource = 0x03; //SL_ANDROID_RECORDING_PRESET_VOICE_RECOGNITION
break;
case 4: //VOICE_COMMUNICATION
mappedSource = 0x04; //SL_ANDROID_RECORDING_PRESET_VOICE_COMMUNICATION
break;
}
}
return mappedSource;
}
String getMicSourceString(int source) {
String name = null;
String[] myArray = getResources().getStringArray(R.array.mic_source_array);
if(myArray != null && source>=0 && source < myArray.length) {
name = myArray[source];
}
return name;
}
void setMicSource(int micSource) { mMicSource = micSource; }
int getPlayBufferSizeInBytes() {
return mPlayBufferSizeInBytes;
}
void setPlayBufferSizeInBytes(int playBufferSizeInBytes) {
mPlayBufferSizeInBytes = playBufferSizeInBytes;
}
int getRecordBufferSizeInBytes() {
return mRecordBuffSizeInBytes;
}
void setRecordBufferSizeInBytes(int recordBufferSizeInBytes) {
mRecordBuffSizeInBytes = recordBufferSizeInBytes;
}
public void computeDefaults() {
int samplingRate = AudioTrack.getNativeOutputSampleRate(AudioManager.STREAM_MUSIC);
setSamplingRate(samplingRate);
if( mAudioThreadType == AUDIO_THREAD_TYPE_NATIVE) {
int minBufferSizeInFrames;
if (isSafeToUseGetProperty()) {
AudioManager am = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
String value = am.getProperty(AudioManager.PROPERTY_OUTPUT_FRAMES_PER_BUFFER);
minBufferSizeInFrames = Integer.parseInt(value);
} else {
minBufferSizeInFrames = 1024;
log("On button test micSource Name: " );
}
int minBufferSizeInBytes = BYTES_PER_FRAME * minBufferSizeInFrames;
setPlayBufferSizeInBytes(minBufferSizeInBytes);
setRecordBufferSizeInBytes(minBufferSizeInBytes);
} else {
int minPlayBufferSizeInBytes = AudioTrack.getMinBufferSize(samplingRate,
AudioFormat.CHANNEL_OUT_MONO,
AudioFormat.ENCODING_PCM_16BIT);
setPlayBufferSizeInBytes(minPlayBufferSizeInBytes);
int minRecBufferSizeInBytes = AudioRecord.getMinBufferSize(samplingRate,
AudioFormat.CHANNEL_IN_MONO,
AudioFormat.ENCODING_PCM_16BIT);
setRecordBufferSizeInBytes(minRecBufferSizeInBytes);
}
//log("computed defaults");
}
String getSystemInfo() {
String info = null;
try {
int versionCode = getApplicationContext().getPackageManager().getPackageInfo(getApplicationContext().getPackageName(), 0).versionCode;
String versionName = getApplicationContext().getPackageManager().getPackageInfo(getApplicationContext().getPackageName(), 0).versionName;
info = String.format("App ver. " +versionCode +"."+ versionName + " | " +Build.MODEL + " | " + Build.FINGERPRINT);
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
return info;
}
boolean isSafeToUseSles() {
return Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD;
}
boolean isSafeToUseGetProperty() {
return Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1;
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
}
@Override
public void onCreate() {
super.onCreate();
setDefaults();
}
@Override
public void onLowMemory() {
super.onLowMemory();
}
@Override
public void onTerminate() {
super.onTerminate();
}
private static void log(String msg) {
Log.v("Recorder", msg);
}
}
|
