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annotate android/src/org/libsdl/app/SDLAudioManager.java @ 1863:d60f2d7c02a5

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Differentiate between the full Sega mapper and the SRAM only one. Fixes crash on save state load for Phantasy Star IV and other games that use the same mapper
author Michael Pavone <pavone@retrodev.com>
date Tue, 14 May 2019 23:20:35 -0700
parents 78abbabfd58d
children
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1 package org.libsdl.app;
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2
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3 import android.media.*;
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4 import android.util.Log;
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5
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6 public class SDLAudioManager
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7 {
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8 protected static final String TAG = "SDLAudio";
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9
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10 protected static AudioTrack mAudioTrack;
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11 protected static AudioRecord mAudioRecord;
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12
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13 public static void initialize() {
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14 mAudioTrack = null;
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15 mAudioRecord = null;
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16 }
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17
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18 // Audio
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19
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20 /**
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21 * This method is called by SDL using JNI.
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22 */
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23 public static int audioOpen(int sampleRate, boolean is16Bit, boolean isStereo, int desiredFrames) {
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24 int channelConfig = isStereo ? AudioFormat.CHANNEL_CONFIGURATION_STEREO : AudioFormat.CHANNEL_CONFIGURATION_MONO;
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25 int audioFormat = is16Bit ? AudioFormat.ENCODING_PCM_16BIT : AudioFormat.ENCODING_PCM_8BIT;
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26 int frameSize = (isStereo ? 2 : 1) * (is16Bit ? 2 : 1);
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27
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28 Log.v(TAG, "SDL audio: wanted " + (isStereo ? "stereo" : "mono") + " " + (is16Bit ? "16-bit" : "8-bit") + " " + (sampleRate / 1000f) + "kHz, " + desiredFrames + " frames buffer");
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29
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30 // Let the user pick a larger buffer if they really want -- but ye
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31 // gods they probably shouldn't, the minimums are horrifyingly high
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32 // latency already
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33 desiredFrames = Math.max(desiredFrames, (AudioTrack.getMinBufferSize(sampleRate, channelConfig, audioFormat) + frameSize - 1) / frameSize);
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34
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35 if (mAudioTrack == null) {
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36 mAudioTrack = new AudioTrack(AudioManager.STREAM_MUSIC, sampleRate,
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37 channelConfig, audioFormat, desiredFrames * frameSize, AudioTrack.MODE_STREAM);
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38
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39 // Instantiating AudioTrack can "succeed" without an exception and the track may still be invalid
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40 // Ref: https://android.googlesource.com/platform/frameworks/base/+/refs/heads/master/media/java/android/media/AudioTrack.java
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41 // Ref: http://developer.android.com/reference/android/media/AudioTrack.html#getState()
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42
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43 if (mAudioTrack.getState() != AudioTrack.STATE_INITIALIZED) {
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44 Log.e(TAG, "Failed during initialization of Audio Track");
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45 mAudioTrack = null;
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46 return -1;
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47 }
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48
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49 mAudioTrack.play();
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50 }
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51
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52 Log.v(TAG, "SDL audio: got " + ((mAudioTrack.getChannelCount() >= 2) ? "stereo" : "mono") + " " + ((mAudioTrack.getAudioFormat() == AudioFormat.ENCODING_PCM_16BIT) ? "16-bit" : "8-bit") + " " + (mAudioTrack.getSampleRate() / 1000f) + "kHz, " + desiredFrames + " frames buffer");
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53
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54 return 0;
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55 }
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56
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57 /**
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58 * This method is called by SDL using JNI.
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59 */
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60 public static void audioWriteShortBuffer(short[] buffer) {
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61 if (mAudioTrack == null) {
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62 Log.e(TAG, "Attempted to make audio call with uninitialized audio!");
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63 return;
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64 }
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65
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66 for (int i = 0; i < buffer.length; ) {
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67 int result = mAudioTrack.write(buffer, i, buffer.length - i);
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68 if (result > 0) {
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69 i += result;
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70 } else if (result == 0) {
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71 try {
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72 Thread.sleep(1);
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73 } catch(InterruptedException e) {
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74 // Nom nom
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75 }
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76 } else {
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77 Log.w(TAG, "SDL audio: error return from write(short)");
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78 return;
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79 }
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80 }
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81 }
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82
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83 /**
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84 * This method is called by SDL using JNI.
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85 */
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86 public static void audioWriteByteBuffer(byte[] buffer) {
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87 if (mAudioTrack == null) {
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88 Log.e(TAG, "Attempted to make audio call with uninitialized audio!");
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89 return;
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90 }
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91
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92 for (int i = 0; i < buffer.length; ) {
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93 int result = mAudioTrack.write(buffer, i, buffer.length - i);
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94 if (result > 0) {
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95 i += result;
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96 } else if (result == 0) {
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97 try {
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98 Thread.sleep(1);
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99 } catch(InterruptedException e) {
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100 // Nom nom
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101 }
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102 } else {
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103 Log.w(TAG, "SDL audio: error return from write(byte)");
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104 return;
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105 }
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106 }
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107 }
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108
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109 /**
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110 * This method is called by SDL using JNI.
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111 */
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112 public static int captureOpen(int sampleRate, boolean is16Bit, boolean isStereo, int desiredFrames) {
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113 int channelConfig = isStereo ? AudioFormat.CHANNEL_CONFIGURATION_STEREO : AudioFormat.CHANNEL_CONFIGURATION_MONO;
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114 int audioFormat = is16Bit ? AudioFormat.ENCODING_PCM_16BIT : AudioFormat.ENCODING_PCM_8BIT;
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115 int frameSize = (isStereo ? 2 : 1) * (is16Bit ? 2 : 1);
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116
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117 Log.v(TAG, "SDL capture: wanted " + (isStereo ? "stereo" : "mono") + " " + (is16Bit ? "16-bit" : "8-bit") + " " + (sampleRate / 1000f) + "kHz, " + desiredFrames + " frames buffer");
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118
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119 // Let the user pick a larger buffer if they really want -- but ye
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120 // gods they probably shouldn't, the minimums are horrifyingly high
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121 // latency already
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122 desiredFrames = Math.max(desiredFrames, (AudioRecord.getMinBufferSize(sampleRate, channelConfig, audioFormat) + frameSize - 1) / frameSize);
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123
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124 if (mAudioRecord == null) {
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125 mAudioRecord = new AudioRecord(MediaRecorder.AudioSource.DEFAULT, sampleRate,
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126 channelConfig, audioFormat, desiredFrames * frameSize);
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127
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128 // see notes about AudioTrack state in audioOpen(), above. Probably also applies here.
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129 if (mAudioRecord.getState() != AudioRecord.STATE_INITIALIZED) {
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130 Log.e(TAG, "Failed during initialization of AudioRecord");
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131 mAudioRecord.release();
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132 mAudioRecord = null;
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133 return -1;
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134 }
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135
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136 mAudioRecord.startRecording();
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137 }
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138
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139 Log.v(TAG, "SDL capture: got " + ((mAudioRecord.getChannelCount() >= 2) ? "stereo" : "mono") + " " + ((mAudioRecord.getAudioFormat() == AudioFormat.ENCODING_PCM_16BIT) ? "16-bit" : "8-bit") + " " + (mAudioRecord.getSampleRate() / 1000f) + "kHz, " + desiredFrames + " frames buffer");
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140
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141 return 0;
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142 }
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143
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144 /** This method is called by SDL using JNI. */
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145 public static int captureReadShortBuffer(short[] buffer, boolean blocking) {
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146 // !!! FIXME: this is available in API Level 23. Until then, we always block. :(
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147 //return mAudioRecord.read(buffer, 0, buffer.length, blocking ? AudioRecord.READ_BLOCKING : AudioRecord.READ_NON_BLOCKING);
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148 return mAudioRecord.read(buffer, 0, buffer.length);
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149 }
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150
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151 /** This method is called by SDL using JNI. */
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152 public static int captureReadByteBuffer(byte[] buffer, boolean blocking) {
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153 // !!! FIXME: this is available in API Level 23. Until then, we always block. :(
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154 //return mAudioRecord.read(buffer, 0, buffer.length, blocking ? AudioRecord.READ_BLOCKING : AudioRecord.READ_NON_BLOCKING);
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155 return mAudioRecord.read(buffer, 0, buffer.length);
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156 }
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157
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158
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159 /** This method is called by SDL using JNI. */
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160 public static void audioClose() {
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161 if (mAudioTrack != null) {
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162 mAudioTrack.stop();
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163 mAudioTrack.release();
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164 mAudioTrack = null;
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165 }
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166 }
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167
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168 /** This method is called by SDL using JNI. */
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169 public static void captureClose() {
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170 if (mAudioRecord != null) {
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171 mAudioRecord.stop();
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172 mAudioRecord.release();
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173 mAudioRecord = null;
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174 }
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175 }
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176
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177 public static native int nativeSetupJNI();
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178 }