Move Visualizer to libaudioeffect_jni, its only user
This removes libaudioeffect_jni's dependency on libmedia and removes
libmedia's dependency on libaudioutils.
Test: build
Change-Id: I23902cd1cc16b49200f41f79736683c89b9f86f8
diff --git a/media/jni/audioeffect/Android.bp b/media/jni/audioeffect/Android.bp
index 09c546a..41ab670 100644
--- a/media/jni/audioeffect/Android.bp
+++ b/media/jni/audioeffect/Android.bp
@@ -6,6 +6,7 @@
"android_media_SourceDefaultEffect.cpp",
"android_media_StreamDefaultEffect.cpp",
"android_media_Visualizer.cpp",
+ "Visualizer.cpp",
],
shared_libs: [
@@ -14,10 +15,12 @@
"libutils",
"libandroid_runtime",
"libnativehelper",
- "libmedia",
"libaudioclient",
+ "libaudioutils",
],
+ version_script: "exports.lds",
+
cflags: [
"-Wall",
"-Werror",
diff --git a/media/jni/audioeffect/Visualizer.cpp b/media/jni/audioeffect/Visualizer.cpp
new file mode 100644
index 0000000..e48032a
--- /dev/null
+++ b/media/jni/audioeffect/Visualizer.cpp
@@ -0,0 +1,443 @@
+/*
+**
+** Copyright 2010, 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.
+*/
+
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "Visualizer"
+#include <utils/Log.h>
+
+#include <stdint.h>
+#include <sys/types.h>
+#include <limits.h>
+
+#include <audio_utils/fixedfft.h>
+#include <utils/Thread.h>
+
+#include "Visualizer.h"
+
+namespace android {
+
+// ---------------------------------------------------------------------------
+
+Visualizer::Visualizer (const String16& opPackageName,
+ int32_t priority,
+ effect_callback_t cbf,
+ void* user,
+ audio_session_t sessionId)
+ : AudioEffect(SL_IID_VISUALIZATION, opPackageName, NULL, priority, cbf, user, sessionId),
+ mCaptureRate(CAPTURE_RATE_DEF),
+ mCaptureSize(CAPTURE_SIZE_DEF),
+ mSampleRate(44100000),
+ mScalingMode(VISUALIZER_SCALING_MODE_NORMALIZED),
+ mMeasurementMode(MEASUREMENT_MODE_NONE),
+ mCaptureCallBack(NULL),
+ mCaptureCbkUser(NULL)
+{
+ initCaptureSize();
+}
+
+Visualizer::~Visualizer()
+{
+ ALOGV("Visualizer::~Visualizer()");
+ setEnabled(false);
+ setCaptureCallBack(NULL, NULL, 0, 0);
+}
+
+void Visualizer::release()
+{
+ ALOGV("Visualizer::release()");
+ setEnabled(false);
+ Mutex::Autolock _l(mCaptureLock);
+
+ mCaptureThread.clear();
+ mCaptureCallBack = NULL;
+ mCaptureCbkUser = NULL;
+ mCaptureFlags = 0;
+ mCaptureRate = 0;
+}
+
+status_t Visualizer::setEnabled(bool enabled)
+{
+ Mutex::Autolock _l(mCaptureLock);
+
+ sp<CaptureThread> t = mCaptureThread;
+ if (t != 0) {
+ if (enabled) {
+ if (t->exitPending()) {
+ if (t->requestExitAndWait() == WOULD_BLOCK) {
+ ALOGE("Visualizer::enable() called from thread");
+ return INVALID_OPERATION;
+ }
+ }
+ }
+ t->mLock.lock();
+ }
+
+ status_t status = AudioEffect::setEnabled(enabled);
+
+ if (t != 0) {
+ if (enabled && status == NO_ERROR) {
+ t->run("Visualizer");
+ } else {
+ t->requestExit();
+ }
+ }
+
+ if (t != 0) {
+ t->mLock.unlock();
+ }
+
+ return status;
+}
+
+status_t Visualizer::setCaptureCallBack(capture_cbk_t cbk, void* user, uint32_t flags,
+ uint32_t rate)
+{
+ if (rate > CAPTURE_RATE_MAX) {
+ return BAD_VALUE;
+ }
+ Mutex::Autolock _l(mCaptureLock);
+
+ if (mEnabled) {
+ return INVALID_OPERATION;
+ }
+
+ if (mCaptureThread != 0) {
+ mCaptureLock.unlock();
+ mCaptureThread->requestExitAndWait();
+ mCaptureLock.lock();
+ }
+
+ mCaptureThread.clear();
+ mCaptureCallBack = cbk;
+ mCaptureCbkUser = user;
+ mCaptureFlags = flags;
+ mCaptureRate = rate;
+
+ if (cbk != NULL) {
+ mCaptureThread = new CaptureThread(this, rate, ((flags & CAPTURE_CALL_JAVA) != 0));
+ }
+ ALOGV("setCaptureCallBack() rate: %d thread %p flags 0x%08x",
+ rate, mCaptureThread.get(), mCaptureFlags);
+ return NO_ERROR;
+}
+
+status_t Visualizer::setCaptureSize(uint32_t size)
+{
+ if (size > VISUALIZER_CAPTURE_SIZE_MAX ||
+ size < VISUALIZER_CAPTURE_SIZE_MIN ||
+ popcount(size) != 1) {
+ return BAD_VALUE;
+ }
+
+ Mutex::Autolock _l(mCaptureLock);
+ if (mEnabled) {
+ return INVALID_OPERATION;
+ }
+
+ uint32_t buf32[sizeof(effect_param_t) / sizeof(uint32_t) + 2];
+ effect_param_t *p = (effect_param_t *)buf32;
+
+ p->psize = sizeof(uint32_t);
+ p->vsize = sizeof(uint32_t);
+ *(int32_t *)p->data = VISUALIZER_PARAM_CAPTURE_SIZE;
+ *((int32_t *)p->data + 1)= size;
+ status_t status = setParameter(p);
+
+ ALOGV("setCaptureSize size %d status %d p->status %d", size, status, p->status);
+
+ if (status == NO_ERROR) {
+ status = p->status;
+ if (status == NO_ERROR) {
+ mCaptureSize = size;
+ }
+ }
+
+ return status;
+}
+
+status_t Visualizer::setScalingMode(uint32_t mode) {
+ if ((mode != VISUALIZER_SCALING_MODE_NORMALIZED)
+ && (mode != VISUALIZER_SCALING_MODE_AS_PLAYED)) {
+ return BAD_VALUE;
+ }
+
+ Mutex::Autolock _l(mCaptureLock);
+
+ uint32_t buf32[sizeof(effect_param_t) / sizeof(uint32_t) + 2];
+ effect_param_t *p = (effect_param_t *)buf32;
+
+ p->psize = sizeof(uint32_t);
+ p->vsize = sizeof(uint32_t);
+ *(int32_t *)p->data = VISUALIZER_PARAM_SCALING_MODE;
+ *((int32_t *)p->data + 1)= mode;
+ status_t status = setParameter(p);
+
+ ALOGV("setScalingMode mode %d status %d p->status %d", mode, status, p->status);
+
+ if (status == NO_ERROR) {
+ status = p->status;
+ if (status == NO_ERROR) {
+ mScalingMode = mode;
+ }
+ }
+
+ return status;
+}
+
+status_t Visualizer::setMeasurementMode(uint32_t mode) {
+ if ((mode != MEASUREMENT_MODE_NONE)
+ //Note: needs to be handled as a mask when more measurement modes are added
+ && ((mode & MEASUREMENT_MODE_PEAK_RMS) != mode)) {
+ return BAD_VALUE;
+ }
+
+ Mutex::Autolock _l(mCaptureLock);
+
+ uint32_t buf32[sizeof(effect_param_t) / sizeof(uint32_t) + 2];
+ effect_param_t *p = (effect_param_t *)buf32;
+
+ p->psize = sizeof(uint32_t);
+ p->vsize = sizeof(uint32_t);
+ *(int32_t *)p->data = VISUALIZER_PARAM_MEASUREMENT_MODE;
+ *((int32_t *)p->data + 1)= mode;
+ status_t status = setParameter(p);
+
+ ALOGV("setMeasurementMode mode %d status %d p->status %d", mode, status, p->status);
+
+ if (status == NO_ERROR) {
+ status = p->status;
+ if (status == NO_ERROR) {
+ mMeasurementMode = mode;
+ }
+ }
+ return status;
+}
+
+status_t Visualizer::getIntMeasurements(uint32_t type, uint32_t number, int32_t *measurements) {
+ if (mMeasurementMode == MEASUREMENT_MODE_NONE) {
+ ALOGE("Cannot retrieve int measurements, no measurement mode set");
+ return INVALID_OPERATION;
+ }
+ if (!(mMeasurementMode & type)) {
+ // measurement type has not been set on this Visualizer
+ ALOGE("Cannot retrieve int measurements, requested measurement mode 0x%x not set(0x%x)",
+ type, mMeasurementMode);
+ return INVALID_OPERATION;
+ }
+ // only peak+RMS measurement supported
+ if ((type != MEASUREMENT_MODE_PEAK_RMS)
+ // for peak+RMS measurement, the results are 2 int32_t values
+ || (number != 2)) {
+ ALOGE("Cannot retrieve int measurements, MEASUREMENT_MODE_PEAK_RMS returns 2 ints, not %d",
+ number);
+ return BAD_VALUE;
+ }
+
+ status_t status = NO_ERROR;
+ if (mEnabled) {
+ uint32_t replySize = number * sizeof(int32_t);
+ status = command(VISUALIZER_CMD_MEASURE,
+ sizeof(uint32_t) /*cmdSize*/,
+ &type /*cmdData*/,
+ &replySize, measurements);
+ ALOGV("getMeasurements() command returned %d", status);
+ if ((status == NO_ERROR) && (replySize == 0)) {
+ status = NOT_ENOUGH_DATA;
+ }
+ } else {
+ ALOGV("getMeasurements() disabled");
+ return INVALID_OPERATION;
+ }
+ return status;
+}
+
+status_t Visualizer::getWaveForm(uint8_t *waveform)
+{
+ if (waveform == NULL) {
+ return BAD_VALUE;
+ }
+ if (mCaptureSize == 0) {
+ return NO_INIT;
+ }
+
+ status_t status = NO_ERROR;
+ if (mEnabled) {
+ uint32_t replySize = mCaptureSize;
+ status = command(VISUALIZER_CMD_CAPTURE, 0, NULL, &replySize, waveform);
+ ALOGV("getWaveForm() command returned %d", status);
+ if ((status == NO_ERROR) && (replySize == 0)) {
+ status = NOT_ENOUGH_DATA;
+ }
+ } else {
+ ALOGV("getWaveForm() disabled");
+ memset(waveform, 0x80, mCaptureSize);
+ }
+ return status;
+}
+
+status_t Visualizer::getFft(uint8_t *fft)
+{
+ if (fft == NULL) {
+ return BAD_VALUE;
+ }
+ if (mCaptureSize == 0) {
+ return NO_INIT;
+ }
+
+ status_t status = NO_ERROR;
+ if (mEnabled) {
+ uint8_t buf[mCaptureSize];
+ status = getWaveForm(buf);
+ if (status == NO_ERROR) {
+ status = doFft(fft, buf);
+ }
+ } else {
+ memset(fft, 0, mCaptureSize);
+ }
+ return status;
+}
+
+status_t Visualizer::doFft(uint8_t *fft, uint8_t *waveform)
+{
+ int32_t workspace[mCaptureSize >> 1];
+ int32_t nonzero = 0;
+
+ for (uint32_t i = 0; i < mCaptureSize; i += 2) {
+ workspace[i >> 1] =
+ ((waveform[i] ^ 0x80) << 24) | ((waveform[i + 1] ^ 0x80) << 8);
+ nonzero |= workspace[i >> 1];
+ }
+
+ if (nonzero) {
+ fixed_fft_real(mCaptureSize >> 1, workspace);
+ }
+
+ for (uint32_t i = 0; i < mCaptureSize; i += 2) {
+ short tmp = workspace[i >> 1] >> 21;
+ while (tmp > 127 || tmp < -128) tmp >>= 1;
+ fft[i] = tmp;
+ tmp = workspace[i >> 1];
+ tmp >>= 5;
+ while (tmp > 127 || tmp < -128) tmp >>= 1;
+ fft[i + 1] = tmp;
+ }
+
+ return NO_ERROR;
+}
+
+void Visualizer::periodicCapture()
+{
+ Mutex::Autolock _l(mCaptureLock);
+ ALOGV("periodicCapture() %p mCaptureCallBack %p mCaptureFlags 0x%08x",
+ this, mCaptureCallBack, mCaptureFlags);
+ if (mCaptureCallBack != NULL &&
+ (mCaptureFlags & (CAPTURE_WAVEFORM|CAPTURE_FFT)) &&
+ mCaptureSize != 0) {
+ uint8_t waveform[mCaptureSize];
+ status_t status = getWaveForm(waveform);
+ if (status != NO_ERROR) {
+ return;
+ }
+ uint8_t fft[mCaptureSize];
+ if (mCaptureFlags & CAPTURE_FFT) {
+ status = doFft(fft, waveform);
+ }
+ if (status != NO_ERROR) {
+ return;
+ }
+ uint8_t *wavePtr = NULL;
+ uint8_t *fftPtr = NULL;
+ uint32_t waveSize = 0;
+ uint32_t fftSize = 0;
+ if (mCaptureFlags & CAPTURE_WAVEFORM) {
+ wavePtr = waveform;
+ waveSize = mCaptureSize;
+ }
+ if (mCaptureFlags & CAPTURE_FFT) {
+ fftPtr = fft;
+ fftSize = mCaptureSize;
+ }
+ mCaptureCallBack(mCaptureCbkUser, waveSize, wavePtr, fftSize, fftPtr, mSampleRate);
+ }
+}
+
+uint32_t Visualizer::initCaptureSize()
+{
+ uint32_t buf32[sizeof(effect_param_t) / sizeof(uint32_t) + 2];
+ effect_param_t *p = (effect_param_t *)buf32;
+
+ p->psize = sizeof(uint32_t);
+ p->vsize = sizeof(uint32_t);
+ *(int32_t *)p->data = VISUALIZER_PARAM_CAPTURE_SIZE;
+ status_t status = getParameter(p);
+
+ if (status == NO_ERROR) {
+ status = p->status;
+ }
+
+ uint32_t size = 0;
+ if (status == NO_ERROR) {
+ size = *((int32_t *)p->data + 1);
+ }
+ mCaptureSize = size;
+
+ ALOGV("initCaptureSize size %d status %d", mCaptureSize, status);
+
+ return size;
+}
+
+void Visualizer::controlStatusChanged(bool controlGranted) {
+ if (controlGranted) {
+ // this Visualizer instance regained control of the effect, reset the scaling mode
+ // and capture size as has been cached through it.
+ ALOGV("controlStatusChanged(true) causes effect parameter reset:");
+ ALOGV(" scaling mode reset to %d", mScalingMode);
+ setScalingMode(mScalingMode);
+ ALOGV(" capture size reset to %d", mCaptureSize);
+ setCaptureSize(mCaptureSize);
+ }
+ AudioEffect::controlStatusChanged(controlGranted);
+}
+
+//-------------------------------------------------------------------------
+
+Visualizer::CaptureThread::CaptureThread(Visualizer* receiver, uint32_t captureRate,
+ bool bCanCallJava)
+ : Thread(bCanCallJava), mReceiver(receiver)
+{
+ mSleepTimeUs = 1000000000 / captureRate;
+ ALOGV("CaptureThread cstor %p captureRate %d mSleepTimeUs %d", this, captureRate, mSleepTimeUs);
+}
+
+bool Visualizer::CaptureThread::threadLoop()
+{
+ ALOGV("CaptureThread %p enter", this);
+ sp<Visualizer> receiver = mReceiver.promote();
+ if (receiver == NULL) {
+ return false;
+ }
+ while (!exitPending())
+ {
+ usleep(mSleepTimeUs);
+ receiver->periodicCapture();
+ }
+ ALOGV("CaptureThread %p exiting", this);
+ return false;
+}
+
+} // namespace android
diff --git a/media/jni/audioeffect/Visualizer.h b/media/jni/audioeffect/Visualizer.h
new file mode 100644
index 0000000..8078e36
--- /dev/null
+++ b/media/jni/audioeffect/Visualizer.h
@@ -0,0 +1,179 @@
+/*
+ * Copyright (C) 2010 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.
+ */
+
+#ifndef ANDROID_MEDIA_VISUALIZER_H
+#define ANDROID_MEDIA_VISUALIZER_H
+
+#include <media/AudioEffect.h>
+#include <system/audio_effects/effect_visualizer.h>
+#include <utils/Thread.h>
+
+/**
+ * The Visualizer class enables application to retrieve part of the currently playing audio for
+ * visualization purpose. It is not an audio recording interface and only returns partial and low
+ * quality audio content. However, to protect privacy of certain audio data (e.g voice mail) the use
+ * of the visualizer requires the permission android.permission.RECORD_AUDIO.
+ * The audio session ID passed to the constructor indicates which audio content should be
+ * visualized:
+ * - If the session is 0, the audio output mix is visualized
+ * - If the session is not 0, the audio from a particular MediaPlayer or AudioTrack
+ * using this audio session is visualized
+ * Two types of representation of audio content can be captured:
+ * - Waveform data: consecutive 8-bit (unsigned) mono samples by using the getWaveForm() method
+ * - Frequency data: 8-bit magnitude FFT by using the getFft() method
+ *
+ * The length of the capture can be retrieved or specified by calling respectively
+ * getCaptureSize() and setCaptureSize() methods. Note that the size of the FFT
+ * is half of the specified capture size but both sides of the spectrum are returned yielding in a
+ * number of bytes equal to the capture size. The capture size must be a power of 2 in the range
+ * returned by getMinCaptureSize() and getMaxCaptureSize().
+ * In addition to the polling capture mode, a callback mode is also available by installing a
+ * callback function by use of the setCaptureCallBack() method. The rate at which the callback
+ * is called as well as the type of data returned is specified.
+ * Before capturing data, the Visualizer must be enabled by calling the setEnabled() method.
+ * When data capture is not needed any more, the Visualizer should be disabled.
+ */
+
+
+namespace android {
+
+// ----------------------------------------------------------------------------
+
+class Visualizer: public AudioEffect {
+public:
+
+ enum callback_flags {
+ CAPTURE_WAVEFORM = 0x00000001, // capture callback returns a PCM wave form
+ CAPTURE_FFT = 0x00000002, // apture callback returns a frequency representation
+ CAPTURE_CALL_JAVA = 0x00000004 // the callback thread can call java
+ };
+
+
+ /* Constructor.
+ * See AudioEffect constructor for details on parameters.
+ */
+ Visualizer(const String16& opPackageName,
+ int32_t priority = 0,
+ effect_callback_t cbf = NULL,
+ void* user = NULL,
+ audio_session_t sessionId = AUDIO_SESSION_OUTPUT_MIX);
+
+ ~Visualizer();
+
+ virtual status_t setEnabled(bool enabled);
+
+ // maximum capture size in samples
+ static uint32_t getMaxCaptureSize() { return VISUALIZER_CAPTURE_SIZE_MAX; }
+ // minimum capture size in samples
+ static uint32_t getMinCaptureSize() { return VISUALIZER_CAPTURE_SIZE_MIN; }
+ // maximum capture rate in millihertz
+ static uint32_t getMaxCaptureRate() { return CAPTURE_RATE_MAX; }
+
+ // callback used to return periodic PCM or FFT captures to the application. Either one or both
+ // types of data are returned (PCM and FFT) according to flags indicated when installing the
+ // callback. When a type of data is not present, the corresponding size (waveformSize or
+ // fftSize) is 0.
+ typedef void (*capture_cbk_t)(void* user,
+ uint32_t waveformSize,
+ uint8_t *waveform,
+ uint32_t fftSize,
+ uint8_t *fft,
+ uint32_t samplingrate);
+
+ // install a callback to receive periodic captures. The capture rate is specified in milliHertz
+ // and the capture format is according to flags (see callback_flags).
+ status_t setCaptureCallBack(capture_cbk_t cbk, void* user, uint32_t flags, uint32_t rate);
+
+ // set the capture size capture size must be a power of two in the range
+ // [VISUALIZER_CAPTURE_SIZE_MAX. VISUALIZER_CAPTURE_SIZE_MIN]
+ // must be called when the visualizer is not enabled
+ status_t setCaptureSize(uint32_t size);
+ uint32_t getCaptureSize() { return mCaptureSize; }
+
+ // returns the capture rate indicated when installing the callback
+ uint32_t getCaptureRate() { return mCaptureRate; }
+
+ // returns the sampling rate of the audio being captured
+ uint32_t getSamplingRate() { return mSampleRate; }
+
+ // set the way volume affects the captured data
+ // mode must one of VISUALIZER_SCALING_MODE_NORMALIZED,
+ // VISUALIZER_SCALING_MODE_AS_PLAYED
+ status_t setScalingMode(uint32_t mode);
+ uint32_t getScalingMode() { return mScalingMode; }
+
+ // set which measurements are done on the audio buffers processed by the effect.
+ // valid measurements (mask): MEASUREMENT_MODE_PEAK_RMS
+ status_t setMeasurementMode(uint32_t mode);
+ uint32_t getMeasurementMode() { return mMeasurementMode; }
+
+ // return a set of int32_t measurements
+ status_t getIntMeasurements(uint32_t type, uint32_t number, int32_t *measurements);
+
+ // return a capture in PCM 8 bit unsigned format. The size of the capture is equal to
+ // getCaptureSize()
+ status_t getWaveForm(uint8_t *waveform);
+
+ // return a capture in FFT 8 bit signed format. The size of the capture is equal to
+ // getCaptureSize() but the length of the FFT is half of the size (both parts of the spectrum
+ // are returned
+ status_t getFft(uint8_t *fft);
+ void release();
+
+protected:
+ // from IEffectClient
+ virtual void controlStatusChanged(bool controlGranted);
+
+private:
+
+ static const uint32_t CAPTURE_RATE_MAX = 20000;
+ static const uint32_t CAPTURE_RATE_DEF = 10000;
+ static const uint32_t CAPTURE_SIZE_DEF = VISUALIZER_CAPTURE_SIZE_MAX;
+
+ /* internal class to handle the callback */
+ class CaptureThread : public Thread
+ {
+ public:
+ CaptureThread(Visualizer* visualizer, uint32_t captureRate, bool bCanCallJava = false);
+
+ private:
+ friend class Visualizer;
+ virtual bool threadLoop();
+ wp<Visualizer> mReceiver;
+ Mutex mLock;
+ uint32_t mSleepTimeUs;
+ };
+
+ status_t doFft(uint8_t *fft, uint8_t *waveform);
+ void periodicCapture();
+ uint32_t initCaptureSize();
+
+ Mutex mCaptureLock;
+ uint32_t mCaptureRate;
+ uint32_t mCaptureSize;
+ uint32_t mSampleRate;
+ uint32_t mScalingMode;
+ uint32_t mMeasurementMode;
+ capture_cbk_t mCaptureCallBack;
+ void *mCaptureCbkUser;
+ sp<CaptureThread> mCaptureThread;
+ uint32_t mCaptureFlags;
+};
+
+
+}; // namespace android
+
+#endif // ANDROID_MEDIA_VISUALIZER_H
diff --git a/media/jni/audioeffect/android_media_Visualizer.cpp b/media/jni/audioeffect/android_media_Visualizer.cpp
index 45de36e..1362433 100644
--- a/media/jni/audioeffect/android_media_Visualizer.cpp
+++ b/media/jni/audioeffect/android_media_Visualizer.cpp
@@ -24,7 +24,7 @@
#include <nativehelper/JNIHelp.h>
#include <android_runtime/AndroidRuntime.h>
#include <utils/threads.h>
-#include "media/Visualizer.h"
+#include "Visualizer.h"
#include <nativehelper/ScopedUtfChars.h>
diff --git a/media/jni/audioeffect/exports.lds b/media/jni/audioeffect/exports.lds
new file mode 100644
index 0000000..70491f4
--- /dev/null
+++ b/media/jni/audioeffect/exports.lds
@@ -0,0 +1,6 @@
+{
+ global:
+ *;
+ local:
+ *android10Visualizer*;
+};