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@ -1,13 +1,22 @@
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package com.genymobile.scrcpy;
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import android.annotation.SuppressLint;
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import android.annotation.TargetApi;
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import android.app.Application;
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import android.content.AttributionSource;
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import android.content.ContextWrapper;
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import android.content.pm.ApplicationInfo;
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import android.media.AudioAttributes;
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import android.media.AudioManager;
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import android.media.AudioRecord;
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import android.os.Build;
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import android.os.Looper;
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import android.os.Parcel;
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import java.lang.ref.WeakReference;
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import java.lang.reflect.Constructor;
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import java.lang.reflect.Field;
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import java.lang.reflect.Method;
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public final class Workarounds {
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@ -95,4 +104,140 @@ public final class Workarounds {
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Ln.d("Could not fill app context: " + throwable.getMessage());
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}
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}
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@TargetApi(Build.VERSION_CODES.R)
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@SuppressLint({"WrongConstant", "MissingPermission", "BlockedPrivateApi", "SoonBlockedPrivateApi"})
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public static AudioRecord createAudioRecord(int source, int sampleRate, int channelConfig, int channels, int channelMask, int encoding) {
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// Vivo (and maybe some other third-party ROMs) modified `AudioRecord`'s constructor, requiring `Context`s from real App environment.
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//
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// This method invokes the `AudioRecord(long nativeRecordInJavaObj)` constructor to create an empty `AudioRecord` instance, then uses
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// reflections to initialize it like the normal constructor do (or the `AudioRecord.Builder.build()` method do).
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// As a result, the modified code was not executed.
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try {
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// AudioRecord audioRecord = new AudioRecord(0L);
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Constructor<AudioRecord> audioRecordConstructor = AudioRecord.class.getDeclaredConstructor(long.class);
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audioRecordConstructor.setAccessible(true);
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AudioRecord audioRecord = audioRecordConstructor.newInstance(0L);
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// audioRecord.mRecordingState = RECORDSTATE_STOPPED;
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Field mRecordingStateField = AudioRecord.class.getDeclaredField("mRecordingState");
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mRecordingStateField.setAccessible(true);
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mRecordingStateField.set(audioRecord, AudioRecord.RECORDSTATE_STOPPED);
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Looper looper = Looper.myLooper();
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if (looper == null) {
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looper = Looper.getMainLooper();
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}
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// audioRecord.mInitializationLooper = looper;
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Field mInitializationLooperField = AudioRecord.class.getDeclaredField("mInitializationLooper");
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mInitializationLooperField.setAccessible(true);
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mInitializationLooperField.set(audioRecord, looper);
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// Create `AudioAttributes` with fixed capture preset
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int capturePreset = source;
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AudioAttributes.Builder audioAttributesBuilder = new AudioAttributes.Builder();
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Method setInternalCapturePresetMethod = AudioAttributes.Builder.class.getMethod("setInternalCapturePreset", int.class);
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setInternalCapturePresetMethod.invoke(audioAttributesBuilder, capturePreset);
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AudioAttributes attributes = audioAttributesBuilder.build();
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// audioRecord.mAudioAttributes = attributes;
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Field mAudioAttributesField = AudioRecord.class.getDeclaredField("mAudioAttributes");
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mAudioAttributesField.setAccessible(true);
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mAudioAttributesField.set(audioRecord, attributes);
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// audioRecord.audioParamCheck(capturePreset, sampleRate, encoding);
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Method audioParamCheckMethod = AudioRecord.class.getDeclaredMethod("audioParamCheck", int.class, int.class, int.class);
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audioParamCheckMethod.setAccessible(true);
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audioParamCheckMethod.invoke(audioRecord, capturePreset, sampleRate, encoding);
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// audioRecord.mChannelCount = channels
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Field mChannelCountField = AudioRecord.class.getDeclaredField("mChannelCount");
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mChannelCountField.setAccessible(true);
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mChannelCountField.set(audioRecord, channels);
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// audioRecord.mChannelMask = channelMask
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Field mChannelMaskField = AudioRecord.class.getDeclaredField("mChannelMask");
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mChannelMaskField.setAccessible(true);
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mChannelMaskField.set(audioRecord, channelMask);
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int minBufferSize = AudioRecord.getMinBufferSize(sampleRate, channelConfig, encoding);
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int bufferSizeInBytes = minBufferSize * 8;
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// audioRecord.audioBuffSizeCheck(bufferSizeInBytes)
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Method audioBuffSizeCheckMethod = AudioRecord.class.getDeclaredMethod("audioBuffSizeCheck", int.class);
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audioBuffSizeCheckMethod.setAccessible(true);
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audioBuffSizeCheckMethod.invoke(audioRecord, bufferSizeInBytes);
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final int channelIndexMask = 0;
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int[] sampleRateArray = new int[]{sampleRate};
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int[] session = new int[]{AudioManager.AUDIO_SESSION_ID_GENERATE};
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int initResult;
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if (Build.VERSION.SDK_INT < Build.VERSION_CODES.S) {
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// private native final int native_setup(Object audiorecord_this,
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// Object /*AudioAttributes*/ attributes,
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// int[] sampleRate, int channelMask, int channelIndexMask, int audioFormat,
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// int buffSizeInBytes, int[] sessionId, String opPackageName,
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// long nativeRecordInJavaObj);
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Method nativeSetupMethod = AudioRecord.class.getDeclaredMethod("native_setup", Object.class, Object.class, int[].class, int.class,
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int.class, int.class, int.class, int[].class, String.class, long.class);
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nativeSetupMethod.setAccessible(true);
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initResult = (int) nativeSetupMethod.invoke(audioRecord, new WeakReference<AudioRecord>(audioRecord), attributes, sampleRateArray,
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channelMask, channelIndexMask, audioRecord.getAudioFormat(), bufferSizeInBytes, session, FakeContext.get().getOpPackageName(),
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0L);
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} else {
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// Assume `context` is never `null`
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AttributionSource attributionSource = FakeContext.get().getAttributionSource();
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// Assume `attributionSource.getPackageName()` is never null
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// ScopedParcelState attributionSourceState = attributionSource.asScopedParcelState()
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Method asScopedParcelStateMethod = AttributionSource.class.getDeclaredMethod("asScopedParcelState");
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asScopedParcelStateMethod.setAccessible(true);
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try (AutoCloseable attributionSourceState = (AutoCloseable) asScopedParcelStateMethod.invoke(attributionSource)) {
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Method getParcelMethod = attributionSourceState.getClass().getDeclaredMethod("getParcel");
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Parcel attributionSourceParcel = (Parcel) getParcelMethod.invoke(attributionSourceState);
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// private native int native_setup(Object audiorecordThis,
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// Object /*AudioAttributes*/ attributes,
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// int[] sampleRate, int channelMask, int channelIndexMask, int audioFormat,
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// int buffSizeInBytes, int[] sessionId, @NonNull Parcel attributionSource,
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// long nativeRecordInJavaObj, int maxSharedAudioHistoryMs);
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Method nativeSetupMethod = AudioRecord.class.getDeclaredMethod("native_setup", Object.class, Object.class, int[].class, int.class,
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int.class, int.class, int.class, int[].class, Parcel.class, long.class, int.class);
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nativeSetupMethod.setAccessible(true);
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initResult = (int) nativeSetupMethod.invoke(audioRecord, new WeakReference<AudioRecord>(audioRecord), attributes, sampleRateArray,
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channelMask, channelIndexMask, audioRecord.getAudioFormat(), bufferSizeInBytes, session, attributionSourceParcel, 0L, 0);
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}
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}
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if (initResult != AudioRecord.SUCCESS) {
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Ln.e("Error code " + initResult + " when initializing native AudioRecord object.");
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throw new RuntimeException("Cannot create AudioRecord");
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}
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// mSampleRate = sampleRate[0]
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Field mSampleRateField = AudioRecord.class.getDeclaredField("mSampleRate");
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mSampleRateField.setAccessible(true);
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mSampleRateField.set(audioRecord, sampleRateArray[0]);
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// audioRecord.mSessionId = session[0]
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Field mSessionIdField = AudioRecord.class.getDeclaredField("mSessionId");
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mSessionIdField.setAccessible(true);
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mSessionIdField.set(audioRecord, session[0]);
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// audioRecord.mState = AudioRecord.STATE_INITIALIZED
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Field mStateField = AudioRecord.class.getDeclaredField("mState");
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mStateField.setAccessible(true);
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mStateField.set(audioRecord, AudioRecord.STATE_INITIALIZED);
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return audioRecord;
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} catch (Exception e) {
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Ln.e("Failed to invoke AudioRecord.<init>.", e);
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throw new RuntimeException("Cannot create AudioRecord");
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}
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}
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}
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