Merge pull request #683 from google/bigburst
oboe: use bigger burst in OpenSL ES
diff --git a/apps/fxlab/.gitignore b/apps/fxlab/.gitignore
new file mode 100644
index 0000000..603b140
--- /dev/null
+++ b/apps/fxlab/.gitignore
@@ -0,0 +1,14 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
diff --git a/apps/fxlab/CONTRIBUTING.md b/apps/fxlab/CONTRIBUTING.md
new file mode 100644
index 0000000..c68d935
--- /dev/null
+++ b/apps/fxlab/CONTRIBUTING.md
@@ -0,0 +1,16 @@
+# How to Contribute
+
+We'd love to accept your patches and contributions to this project. There are
+just a few small guidelines you need to follow.
+
+## Code reviews
+
+All submissions, including submissions by project members, require review. We
+use GitHub pull requests for this purpose. Consult
+[GitHub Help](https://help.github.com/articles/about-pull-requests/) for more
+information on using pull requests.
+
+## Community Guidelines
+
+This project follows [Google's Open Source Community
+Guidelines](https://opensource.google.com/conduct/).
diff --git a/apps/fxlab/LICENSE b/apps/fxlab/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/apps/fxlab/LICENSE
@@ -0,0 +1,202 @@
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
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+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
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+ 7. Disclaimer of Warranty. Unless required by applicable law or
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+ of your accepting any such warranty or additional liability.
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+ 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
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+ 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.
diff --git a/apps/fxlab/README.md b/apps/fxlab/README.md
new file mode 100644
index 0000000..0743da6
--- /dev/null
+++ b/apps/fxlab/README.md
@@ -0,0 +1,28 @@
+# Android FXLab
+
+## Features
+This app performs real-time audio effects with low latency using the [oboe](https://www.github.com/google/oboe) API.
+
+The audio effects are written natively (in C++), with Kotlin used for the UI.
+
+Supported features include a linear pipeline of real-time effects with re-ordering, enable/disable, and parameter modification.
+
+The effects used should be portable as they operate entirely on numeric type iterators.
+
+## Setup
+Connect the android device to the correct audio input and output devices. A simple use-case could be a headset with a microphone while singing or playing an acoustic instrument near the mic. More complicated setups could involve USB audio interfaces, devices such as the iRig 2 interface for guitar effects/amplification or routing audio output to a computer for a recording.
+
+## Layout
+
+
+
+Tap the plus button to add various effects. The current list of effects being applied to the input audio will be shown on the main screen (in order from top to bottom). Use the drag handles on the right of the effect to re-order the effects. Swiping the effect near the title to the right or left will remove the effect. Use the sliders to modify the parameters of each audio effect. Some effect combinations or parameters might lead to unpleasant sounds!
+
+## Development
+
+A guide to the code, as well as a pdf of a slideshow discussing the code in depth are in the [docs](docs) folder.
+
+## Credits
+This app was written by [Atneya Nair](https://www.github.com/atneya)
+as a sample app using Oboe to publish on the Play store for an internship on
+the Android Audio team at Google.
diff --git a/apps/fxlab/app/.gitignore b/apps/fxlab/app/.gitignore
new file mode 100644
index 0000000..796b96d
--- /dev/null
+++ b/apps/fxlab/app/.gitignore
@@ -0,0 +1 @@
+/build
diff --git a/apps/fxlab/app/CMakeLists.txt b/apps/fxlab/app/CMakeLists.txt
new file mode 100644
index 0000000..4c7c02d
--- /dev/null
+++ b/apps/fxlab/app/CMakeLists.txt
@@ -0,0 +1,79 @@
+# For more information about using CMake with Android Studio, read the
+# documentation: https://d.android.com/studio/projects/add-native-code.html
+
+# Sets the minimum version of CMake required to build the native library.
+
+cmake_minimum_required(VERSION 3.4.1)
+
+# Require C++17 compiler with no extensions
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
+link_directories(${CMAKE_CURRENT_LIST_DIR}/..)
+
+# Creates and names a library, sets it as either STATIC
+# or SHARED, and provides the relative paths to its source code.
+# You can define multiple libraries, and CMake builds them for you.
+# Gradle automatically packages shared libraries with your APK.
+
+add_library( # Sets the name of the library.
+ native-lib
+ # Sets the library as a shared library.
+ SHARED
+ # Provides a relative path to your source file(s).
+ src/main/cpp/native-lib.cpp
+ src/main/cpp/DuplexEngine.cpp
+ )
+
+# Compile with warnings for safety
+if(MSVC)
+ target_compile_options(native-lib PRIVATE /W4 /WX)
+else()
+ target_compile_options(native-lib PRIVATE -Wall -Wextra -pedantic)
+endif()
+
+target_compile_options(native-lib PRIVATE -Ofast)
+
+# Searches for a specified prebuilt library and stores the path as a
+# variable. Because CMake includes system libraries in the search path by
+# default, you only need to specify the name of the public NDK library
+# you want to add. CMake verifies that the library exists before
+# completing its build.
+
+find_library( # Sets the name of the path variable.
+ log-lib
+ # Specifies the name of the NDK library that
+ # you want CMake to locate.
+ log)
+
+
+### INCLUDE OBOE LIBRARY ###
+
+# Set the path to the Oboe library directory
+set (OBOE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../../..)
+
+# Add the Oboe library as a subproject. Since Oboe is an out-of-tree source library we must also
+# specify a binary directory
+add_subdirectory(${OBOE_DIR} ./oboe-bin)
+
+# Specify the path to the Oboe header files and the source.
+include_directories(
+ ${OBOE_DIR}/include
+ ${OBOE_DIR}/src
+)
+
+### END OBOE INCLUDE SECTION ###
+
+
+# Specifies libraries CMake should link to your target library. You
+# can link multiple libraries, such as libraries you define in this
+# build script, prebuilt third-party libraries, or system libraries.
+
+target_link_libraries( # Specifies the target library.
+ native-lib
+ oboe
+ # Links the target library to the log library
+ # included in the NDK.
+ ${log-lib})
+
diff --git a/apps/fxlab/app/build.gradle b/apps/fxlab/app/build.gradle
new file mode 100644
index 0000000..b21400b
--- /dev/null
+++ b/apps/fxlab/app/build.gradle
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+apply plugin: 'com.android.application'
+
+apply plugin: 'kotlin-android'
+
+apply plugin: 'kotlin-android-extensions'
+
+android {
+ compileSdkVersion 29
+ compileOptions {
+ sourceCompatibility JavaVersion.VERSION_1_8
+ targetCompatibility JavaVersion.VERSION_1_8
+ }
+ defaultConfig {
+ applicationId "com.mobileer.androidfxlab"
+ minSdkVersion 21
+ targetSdkVersion 29
+ versionCode 1
+ versionName "1.0"
+ testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+ }
+ buildTypes {
+ release {
+ minifyEnabled false
+ proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+ }
+ }
+ externalNativeBuild {
+ cmake {
+ path "./CMakeLists.txt"
+ version "3.10.2"
+ }
+ }
+}
+
+dependencies {
+ implementation fileTree(dir: 'libs', include: ['*.jar'])
+ implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+ implementation 'androidx.appcompat:appcompat:1.0.2'
+ implementation 'androidx.core:core-ktx:1.0.2'
+ implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+ implementation 'androidx.recyclerview:recyclerview:1.0.0'
+ implementation 'com.google.android.material:material:1.1.0-alpha08'
+ testImplementation 'junit:junit:4.12'
+ androidTestImplementation 'androidx.test:runner:1.2.0'
+ androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+}
diff --git a/apps/fxlab/app/proguard-rules.pro b/apps/fxlab/app/proguard-rules.pro
new file mode 100644
index 0000000..f1b4245
--- /dev/null
+++ b/apps/fxlab/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+# http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+# public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
diff --git a/apps/fxlab/app/src/main/AndroidManifest.xml b/apps/fxlab/app/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..9523923
--- /dev/null
+++ b/apps/fxlab/app/src/main/AndroidManifest.xml
@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ ~ Copyright 2019 Google LLC
+ ~
+ ~ 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
+ ~
+ ~ https://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.
+ -->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+ package="com.mobileer.androidfxlab">
+
+ <application
+ android:allowBackup="true"
+ android:icon="@mipmap/ic_launcher"
+ android:label="@string/app_name"
+ android:roundIcon="@mipmap/ic_launcher_round"
+ android:supportsRtl="true"
+ android:theme="@style/AppTheme">
+ <activity android:name="com.mobileer.androidfxlab.MainActivity">
+ <intent-filter>
+ <action android:name="android.intent.action.MAIN"/>
+ <category android:name="android.intent.category.LAUNCHER"/>
+ </intent-filter>
+ </activity>
+
+ </application>
+
+ <uses-permission android:name="android.permission.RECORD_AUDIO" />
+
+</manifest>
\ No newline at end of file
diff --git a/apps/fxlab/app/src/main/cpp/DuplexCallback.h b/apps/fxlab/app/src/main/cpp/DuplexCallback.h
new file mode 100644
index 0000000..13b1dde
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/DuplexCallback.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_DUPLEXCALLBACK_H
+#define ANDROID_FXLAB_DUPLEXCALLBACK_H
+
+#include <oboe/Oboe.h>
+
+
+
+// This callback handles mono in, stereo out synchronized audio passthrough.
+// It takes a function which operates on two pointers (beginning and end)
+// of underlying data.
+
+template<class numeric_type>
+class DuplexCallback : public oboe::AudioStreamCallback {
+public:
+
+ DuplexCallback(oboe::AudioStream &inStream,
+ std::function<void(numeric_type *, numeric_type *)> fun,
+ size_t buffer_size, std::function<void(void)> restartFunction) :
+ kBufferSize(buffer_size), inRef(inStream), f(fun), restart(restartFunction) {}
+
+
+ oboe::DataCallbackResult
+ onAudioReady(oboe::AudioStream *, void *audioData, int32_t numFrames) override {
+ auto *outputData = static_cast<numeric_type *>(audioData);
+ // Silence first to simplify glitch detection
+ std::fill(outputData, outputData + numFrames * kChannelCount, 0);
+ oboe::ResultWithValue<int32_t> result = inRef.read(inputBuffer.get(), numFrames, 0);
+ int32_t framesRead = result.value();
+ if (!result) {
+ inRef.requestStop();
+ return oboe::DataCallbackResult::Stop;
+ }
+ if (mSpinUpCallbacks > 0 && framesRead > 0) {
+ mSpinUpCallbacks--;
+ return oboe::DataCallbackResult::Continue;
+ }
+ f(inputBuffer.get(), inputBuffer.get() + framesRead);
+ for (int i = 0; i < framesRead; i++) {
+ for (size_t j = 0; j < kChannelCount; j++) {
+ *outputData++ = inputBuffer[i];
+ }
+ }
+ return oboe::DataCallbackResult::Continue;
+ }
+
+ void onErrorAfterClose(oboe::AudioStream *, oboe::Result result) override {
+ inRef.close();
+ if (result == oboe::Result::ErrorDisconnected) {
+ restart();
+ }
+ }
+
+
+private:
+ int mSpinUpCallbacks = 10; // We will let the streams sync for the first few valid frames
+ static constexpr size_t kChannelCount = 2;
+ const size_t kBufferSize;
+ oboe::AudioStream &inRef;
+ std::function<void(numeric_type *, numeric_type *)> f;
+ std::function<void(void)> restart;
+ std::unique_ptr<numeric_type[]> inputBuffer = std::make_unique<numeric_type[]>(kBufferSize);
+};
+
+#endif //ANDROID_FXLAB_DUPLEXCALLBACK_H
diff --git a/apps/fxlab/app/src/main/cpp/DuplexEngine.cpp b/apps/fxlab/app/src/main/cpp/DuplexEngine.cpp
new file mode 100644
index 0000000..123d52c
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/DuplexEngine.cpp
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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.
+ */
+
+#include "DuplexEngine.h"
+#include "effects/Effects.h"
+
+DuplexEngine::DuplexEngine() {
+ beginStreams();
+}
+
+void DuplexEngine::beginStreams() {
+ // This ordering is extremely important
+ openInStream();
+ if (inStream->getFormat() == oboe::AudioFormat::Float) {
+ functionList.emplace<FunctionList<float *>>();
+ createCallback<float_t>();
+ } else if (inStream->getFormat() == oboe::AudioFormat::I16) {
+ createCallback<int16_t>();
+ } else {
+ stopStreams();
+ }
+ SAMPLE_RATE = inStream->getSampleRate();
+ openOutStream();
+
+ oboe::Result result = startStreams();
+ if (result != oboe::Result::OK) stopStreams();
+}
+
+template<class numeric>
+void DuplexEngine::createCallback() {
+ mCallback = std::make_unique<DuplexCallback<numeric>>(
+ *inStream, [&functionStack = this->functionList](numeric *beg, numeric *end) {
+ std::get<FunctionList<numeric *>>(functionStack)(beg, end);
+ },
+ inStream->getBufferCapacityInFrames(),
+ std::bind(&DuplexEngine::beginStreams, this));
+}
+
+
+oboe::AudioStreamBuilder DuplexEngine::defaultBuilder() {
+ return *oboe::AudioStreamBuilder()
+ .setPerformanceMode(oboe::PerformanceMode::LowLatency)
+ ->setSharingMode(oboe::SharingMode::Exclusive);
+}
+
+void DuplexEngine::openInStream() {
+ defaultBuilder().setDirection(oboe::Direction::Input)
+ ->setFormat(oboe::AudioFormat::Float) // For now
+ ->setChannelCount(1) // Mono in for effects processing
+ ->openManagedStream(inStream);
+}
+
+void DuplexEngine::openOutStream() {
+ defaultBuilder().setCallback(mCallback.get())
+ ->setSampleRate(inStream->getSampleRate())
+ ->setFormat(inStream->getFormat())
+ ->setChannelCount(2) // Stereo out
+ ->openManagedStream(outStream);
+}
+
+oboe::Result DuplexEngine::startStreams() {
+ oboe::Result result = outStream->requestStart();
+ int64_t timeoutNanos = 500 * 1000000; // arbitrary 1/2 second
+ auto currentState = outStream->getState();
+ auto nextState = oboe::StreamState::Unknown;
+ while (result == oboe::Result::OK && currentState != oboe::StreamState::Started) {
+ result = outStream->waitForStateChange(currentState, &nextState, timeoutNanos);
+ currentState = nextState;
+ }
+ if (result != oboe::Result::OK) return result;
+ return inStream->requestStart();
+}
+
+oboe::Result DuplexEngine::stopStreams() {
+ oboe::Result outputResult = inStream->requestStop();
+ oboe::Result inputResult = outStream->requestStop();
+ if (outputResult != oboe::Result::OK) return outputResult;
+ return inputResult;
+}
+
diff --git a/apps/fxlab/app/src/main/cpp/DuplexEngine.h b/apps/fxlab/app/src/main/cpp/DuplexEngine.h
new file mode 100644
index 0000000..c870fe1
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/DuplexEngine.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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 EFFECTS_APP_DUPLEXSTREAM_H
+#define EFFECTS_APP_DUPLEXSTREAM_H
+
+#include <array>
+#include <algorithm>
+#include <variant>
+
+#include <oboe/Oboe.h>
+#include "FunctionList.h"
+#include "DuplexCallback.h"
+
+
+class DuplexEngine {
+public:
+ DuplexEngine();
+
+ void beginStreams();
+
+ virtual ~DuplexEngine() = default;
+
+ oboe::Result startStreams();
+
+ oboe::Result stopStreams();
+
+
+ std::variant<FunctionList<int16_t *>, FunctionList<float *>> functionList{
+ std::in_place_type<FunctionList<int16_t *>>};
+
+private:
+
+ void openInStream();
+
+ void openOutStream();
+
+ static oboe::AudioStreamBuilder defaultBuilder();
+
+ template<class numeric>
+ void createCallback();
+
+ oboe::ManagedStream inStream;
+ std::unique_ptr<oboe::AudioStreamCallback> mCallback;
+ oboe::ManagedStream outStream;
+
+
+};
+
+
+#endif //EFFECTS_APP_DUPLEXSTREAM_H
diff --git a/apps/fxlab/app/src/main/cpp/FunctionList.h b/apps/fxlab/app/src/main/cpp/FunctionList.h
new file mode 100644
index 0000000..8513f32
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/FunctionList.h
@@ -0,0 +1,85 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_FUNCTIONLIST_H
+#define ANDROID_FXLAB_FUNCTIONLIST_H
+
+#include <vector>
+#include <functional>
+#include <array>
+
+template<class iter_type>
+class FunctionList {
+ std::vector<std::pair<std::function<void(iter_type, iter_type)>, bool>> functionList;
+ bool muted = false;
+public:
+ FunctionList() = default;
+
+ FunctionList(const FunctionList &) = delete;
+
+ FunctionList &operator=(const FunctionList &) = delete;
+
+
+ void operator()(iter_type begin, iter_type end) {
+ for (auto &f : functionList) {
+ if (f.second == true) std::get<0>(f)(begin, end);
+ }
+ if (muted) std::fill(begin, end, 0);
+ }
+
+ void addEffect(std::function<void(iter_type, iter_type)> f) {
+ functionList.emplace_back(std::move(f), true);
+ }
+
+ void removeEffectAt(unsigned int index) {
+ if (index < functionList.size()) {
+ functionList.erase(std::next(functionList.begin(), index));
+ }
+ }
+
+ void rotateEffectAt(unsigned int from, unsigned int to) {
+ auto &v = functionList;
+ if (from >= v.size() || to >= v.size()) return;
+ if (from <= to) {
+ std::rotate(v.begin() + from, v.begin() + from + 1, v.begin() + to + 1);
+ } else {
+ from = v.size() - 1 - from;
+ to = v.size() - 1 - to;
+ std::rotate(v.rbegin() + from, v.rbegin() + from + 1, v.rbegin() + to + 1);
+ }
+ }
+
+ void modifyEffectAt(size_t index, std::function<void(iter_type, iter_type)> fun) {
+ functionList[index] = {std::move(fun), functionList[index].second};
+ }
+
+ void enableEffectAt(size_t index, bool enable) {
+ functionList[index].second = enable;
+ }
+
+ void mute(bool toMute) {
+ muted = toMute;
+ }
+
+ auto getType() {
+ return iter_type();
+ }
+
+};
+
+#endif //ANDROID_FXLAB_FUNCTIONLIST_H
+
diff --git a/apps/fxlab/app/src/main/cpp/effects/CombFilter.h b/apps/fxlab/app/src/main/cpp/effects/CombFilter.h
new file mode 100644
index 0000000..c96b907
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/CombFilter.h
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_COMBFILTER_H
+#define ANDROID_FXLAB_COMBFILTER_H
+
+#include "utils/DelayLine.h"
+
+template <class iter_type>
+class CombFilter {
+
+public:
+ // delay > 0 in samples
+ CombFilter(float blend, float feedForward, float feedBack, int delay) :
+ kBlend(blend),
+ kFeedForward(feedForward),
+ kFeedBack(feedBack),
+ kDelay(static_cast<size_t>(delay)) {}
+
+
+ void operator () (typename std::iterator_traits<iter_type>::reference x) {
+ auto delayOutput = delayLine[kDelay];
+ auto delayInput = x + kFeedBack * delayOutput;
+ delayLine.push(delayInput);
+ x = delayInput * kBlend + delayOutput * kFeedForward;
+ }
+ void operator () (iter_type begin, iter_type end) {
+ for (; begin != end; ++begin) {
+ operator()(*begin);
+ }
+ }
+private:
+ // Weights
+ const float kBlend;
+ const float kFeedForward;
+ const float kFeedBack;
+ const size_t kDelay;
+
+ DelayLine<typename std::iterator_traits<iter_type>::value_type> delayLine {kDelay + 1};
+};
+#endif //ANDROID_FXLAB_COMBFILTER_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/DelayLineEffect.h b/apps/fxlab/app/src/main/cpp/effects/DelayLineEffect.h
new file mode 100644
index 0000000..436da42
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/DelayLineEffect.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_DELAYLINEEFFECT_H
+#define ANDROID_FXLAB_DELAYLINEEFFECT_H
+
+#include <functional>
+
+#include "utils/SineWave.h"
+#include "utils/DelayLine.h"
+
+// Abstract class for implementing delay line based effects
+// This functor retains state (it must be used sequentially)
+// Effects are float, mono, 48000 hz
+template <class iter_type>
+class DelayLineEffect {
+
+public:
+ // delay > 0, depth in samples, mod is control signal
+ DelayLineEffect(float blend, float feedForward, float feedBack, int delay, int depth, std::function<float()> &&mod) :
+ kBlend(blend),
+ kFeedForward(feedForward),
+ kFeedBack(feedBack),
+ kDelay(delay),
+ kDepth(depth),
+ mMod(mod) { }
+
+
+ void operator () (typename std::iterator_traits<iter_type>::reference x) {
+ auto delayInput = x + kFeedBack * delayLine[kTap];
+ auto variableDelay = mMod() * kDepth + kTap;
+ int index = static_cast<int>(variableDelay);
+ auto fracComp = 1 - (variableDelay - index);
+ //linear
+ // auto interpolated = fracComp * delayLine[index] + (1 - fracComp) * delayLine[index + 1];
+ // all - pass
+ float interpolated = fracComp * delayLine[index] + delayLine[index + 1]
+ - fracComp * prevInterpolated;
+
+ prevInterpolated = interpolated;
+ delayLine.push(delayInput);
+ x = interpolated * kFeedForward + kBlend * delayInput;
+ }
+ void operator () (iter_type begin, iter_type end) {
+ for (; begin != end; ++begin) {
+ operator()(*begin);
+ }
+ }
+private:
+ // Weights
+ const float kBlend;
+ const float kFeedForward;
+ const float kFeedBack;
+ const int kDelay;
+ const int kDepth;
+ const int kTap = kDelay + kDepth;
+
+ // Control function
+ const std::function<float()> mMod;
+
+ // Memory
+ float prevInterpolated = 0; // for all pass interp
+ const size_t kDelayLineSize = kTap + kDepth + 1; // index one is immediate prev sample
+ DelayLine<typename std::iterator_traits<iter_type>::value_type> delayLine {kDelayLineSize};
+};
+#endif //ANDROID_FXLAB_DELAYLINEEFFECT_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/DoublingEffect.h b/apps/fxlab/app/src/main/cpp/effects/DoublingEffect.h
new file mode 100644
index 0000000..44ee025
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/DoublingEffect.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_DOUBLINGEFFECT_H
+#define ANDROID_FXLAB_DOUBLINGEFFECT_H
+
+#include "DelayLineEffect.h"
+#include "utils/WhiteNoise.h"
+
+
+template <class iter_type>
+class DoublingEffect: public DelayLineEffect<iter_type> {
+public:
+ DoublingEffect(float depth_ms, float delay_ms, float noise_pass):
+ DelayLineEffect<iter_type> {0.7071, 0.7071, 0,
+ static_cast<int>(delay_ms * SAMPLE_RATE / 1000),
+ static_cast<int>(depth_ms * SAMPLE_RATE / 1000),
+ std::function<float()>{WhiteNoise{static_cast<int>(4800 * noise_pass)}}}
+ {}
+};
+#
+#endif //ANDROID_FXLAB_DOUBLINGEFFECT_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/DriveControl.h b/apps/fxlab/app/src/main/cpp/effects/DriveControl.h
new file mode 100644
index 0000000..61846a5
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/DriveControl.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_DRIVECONTROL_H
+#define ANDROID_FXLAB_DRIVECONTROL_H
+
+
+#include <functional>
+
+template <class iter_type>
+
+class DriveControl {
+public:
+
+ DriveControl(std::function<void(iter_type, iter_type)> function, double scale):
+ mFunction(function), kScale(scale) {}
+
+ void operator() (iter_type beg, iter_type end) {
+ std::for_each(beg, end, [this](auto &x){x *= kScale;});
+ mFunction(beg, end);
+ std::for_each(beg, end, [this](auto &x){x *= recip;});
+ }
+
+private:
+ std::function<void(iter_type, iter_type)> mFunction;
+ const double kScale;
+ const double recip = 1 / kScale;
+};
+#endif //ANDROID_FXLAB_DRIVECONTROL_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/EchoEffect.h b/apps/fxlab/app/src/main/cpp/effects/EchoEffect.h
new file mode 100644
index 0000000..b0da075
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/EchoEffect.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_ECHOEFFECT_H
+#define ANDROID_FXLAB_ECHOEFFECT_H
+
+#include "DelayLineEffect.h"
+#include "utils/WhiteNoise.h"
+
+
+template <class iter_type>
+class EchoEffect: public DelayLineEffect<iter_type> {
+public:
+ EchoEffect(float feedback, float delay_ms):
+ DelayLineEffect<iter_type> {1, 0, feedback,
+ static_cast<int>(delay_ms * SAMPLE_RATE / 1000),
+ 0,
+ std::function<float()>{[](){return 0.0;}}}
+ {}
+};
+#endif //ANDROID_FXLAB_ECHOEFFECT_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/Effects.h b/apps/fxlab/app/src/main/cpp/effects/Effects.h
new file mode 100644
index 0000000..68bec8c
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/Effects.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_EFFECTS_H
+#define ANDROID_FXLAB_EFFECTS_H
+
+
+// The Sample Rate for effects
+static int SAMPLE_RATE = 48000;
+
+// This header should include the various effect descriptions
+#include "descrip/EffectDescription.h"
+#include "descrip/PassthroughDescription.h"
+#include "descrip/VibratoDescription.h"
+#include "descrip/TremoloDescription.h"
+#include "descrip/GainDescription.h"
+#include "descrip/FlangerDescription.h"
+#include "descrip/WhiteChorusDescription.h"
+#include "descrip/FIRDescription.h"
+#include "descrip/IIRDescription.h"
+#include "descrip/AllPassDescription.h"
+#include "descrip/DoublingDescription.h"
+#include "descrip/OverdriveDescription.h"
+#include "descrip/DistortionDescription.h"
+#include "descrip/EchoDescription.h"
+#include "descrip/SlapbackDescription.h"
+
+constexpr std::tuple<
+ Effect::PassthroughDescription,
+ Effect::TremoloDescription,
+ Effect::VibratoDescription,
+ Effect::GainDescription,
+ Effect::FlangerDescription,
+ Effect::WhiteChorusDescription,
+ Effect::FIRDescription,
+ Effect::IIRDescription,
+ Effect::AllPassDescription,
+ Effect::DoublingDescription,
+ Effect::OverdriveDescription,
+ Effect::DistortionDescription,
+ Effect::EchoDescription,
+ Effect::SlapbackDescription
+> EffectsTuple{};
+
+constexpr size_t numEffects = std::tuple_size<decltype(EffectsTuple)>::value;
+
+
+#endif //ANDROID_FXLAB_EFFECTS_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/FlangerEffect.h b/apps/fxlab/app/src/main/cpp/effects/FlangerEffect.h
new file mode 100644
index 0000000..b353895
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/FlangerEffect.h
@@ -0,0 +1,29 @@
+ /*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_FLANGEREFFECT_H
+#define ANDROID_FXLAB_FLANGEREFFECT_H
+
+#include "DelayLineEffect.h"
+
+template<class iter_type>
+class FlangerEffect : public DelayLineEffect<iter_type> {
+public:
+ // feedback should be 0.7071
+ FlangerEffect(float depth_ms, float frequency, float feedback):
+ DelayLineEffect<iter_type>(feedback, feedback, feedback, 0, depth_ms * SAMPLE_RATE / 1000,
+ SineWave {frequency, 1, SAMPLE_RATE}) { }
+};
+#endif //ANDROID_FXLAB_FLANGEREFFECT_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/SingleFunctionEffects.h b/apps/fxlab/app/src/main/cpp/effects/SingleFunctionEffects.h
new file mode 100644
index 0000000..4c8f0df
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/SingleFunctionEffects.h
@@ -0,0 +1,56 @@
+ /*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_SINGLEFUNCTIONEFFECTS_H
+#define ANDROID_FXLAB_SINGLEFUNCTIONEFFECTS_H
+
+#include <list>
+
+ namespace SingleFunctionEffects {
+
+template<class floating>
+void _overdrive (floating &x) {
+ static constexpr double third = (1.0 / 3.0);
+ auto abs = std::abs(x);
+ if (abs <= third) {
+ x *= 2;
+ } else if (abs <= 2 * third) {
+ x = std::copysign((3 - (2 - 3 * abs) * (2 - 3 * abs)) * third, x);
+ } else {
+ x = std::copysign(1, x);
+ }
+}
+
+template <class iter_type>
+void overdrive(iter_type beg, iter_type end) {
+ for (; beg != end; ++beg){
+ _overdrive(*beg);
+ }
+}
+
+template <class floating>
+void _distortion (floating &x) {
+ x = std::copysign(-std::expm1(-std::abs(x)), x);
+}
+
+template <class iter_type>
+void distortion(iter_type beg, iter_type end) {
+ for (; beg != end; ++beg) {
+ _distortion(*beg);
+ }
+}
+
+}
+#endif //ANDROID_FXLAB_SINGLEFUNCTIONEFFECTS_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/SlapbackEffect.h b/apps/fxlab/app/src/main/cpp/effects/SlapbackEffect.h
new file mode 100644
index 0000000..cfbd063
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/SlapbackEffect.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_SLAPBACKEFFECT_H
+#define ANDROID_FXLAB_SLAPBACKEFFECT_H
+
+template <class iter_type>
+class SlapbackEffect: public DelayLineEffect<iter_type> {
+public:
+ SlapbackEffect(float feedforward, float delay_ms):
+ DelayLineEffect<iter_type> {1, feedforward, 0,
+ static_cast<int>(delay_ms * SAMPLE_RATE / 1000),
+ 0,
+ std::function<float()>{[](){return 0.0;}}}
+ {}
+};
+#endif //ANDROID_FXLAB_SLAPBACKEFFECT_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/TremoloEffect.h b/apps/fxlab/app/src/main/cpp/effects/TremoloEffect.h
new file mode 100644
index 0000000..4b8de1a
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/TremoloEffect.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_TREMOLOEFFECT_H
+#define ANDROID_FXLAB_TREMOLOEFFECT_H
+
+
+#include "utils/SineWave.h"
+
+class TremoloEffect {
+public:
+ TremoloEffect(float frequency, float height):
+ kCenter(1 - height),
+ kSignal {SineWave{frequency, height, SAMPLE_RATE}} { }
+
+ template <class numeric_type>
+ void operator () (numeric_type &x) {
+ x = x * (kSignal() + kCenter);
+ }
+ template <class iter_type>
+ void operator () (iter_type begin, iter_type end) {
+ for (; begin != end; ++begin) {
+ operator()(*begin);
+ }
+ }
+private:
+ const float kCenter;
+ std::function<float()> kSignal;
+};
+#endif //ANDROID_FXLAB_TREMOLOEFFECT_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/VibratroEffect.h b/apps/fxlab/app/src/main/cpp/effects/VibratroEffect.h
new file mode 100644
index 0000000..16f2682
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/VibratroEffect.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_VIBRATROEFFECT_H
+#define ANDROID_FXLAB_VIBRATROEFFECT_H
+
+#include "DelayLineEffect.h"
+template <class iter_type>
+class VibratoEffect : public DelayLineEffect<iter_type> {
+public:
+ VibratoEffect(float depth_ms, float frequency):
+ DelayLineEffect<iter_type>(0, 1, 0, 1, depth_ms * SAMPLE_RATE / 1000,
+ SineWave {frequency, 1, SAMPLE_RATE}) { }
+};
+#endif //ANDROID_FXLAB_VIBRATROEFFECT_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/WhiteChorusEffect.h b/apps/fxlab/app/src/main/cpp/effects/WhiteChorusEffect.h
new file mode 100644
index 0000000..941d1c0
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/WhiteChorusEffect.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_WHITECHORUSEFFECT_H
+#define ANDROID_FXLAB_WHITECHORUSEFFECT_H
+
+#include "DelayLineEffect.h"
+#include "utils/WhiteNoise.h"
+
+template <class iter_type>
+class WhiteChorusEffect : public DelayLineEffect<iter_type> {
+public:
+ WhiteChorusEffect(float depth_ms, float delay_ms, float noise_pass):
+ DelayLineEffect<iter_type> {0.7071, 1, -0.7071f,
+ static_cast<int>(delay_ms * SAMPLE_RATE / 1000),
+ static_cast<int>(depth_ms * SAMPLE_RATE / 1000),
+ std::function<float()>{WhiteNoise{static_cast<int>(4800 * noise_pass)}}}
+ {}
+};
+#endif //ANDROID_FXLAB_WHITECHORUSEFFECT_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/descrip/AllPassDescription.h b/apps/fxlab/app/src/main/cpp/effects/descrip/AllPassDescription.h
new file mode 100644
index 0000000..cba3434
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/descrip/AllPassDescription.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_ALLPASSDESCRIPTION_H
+#define ANDROID_FXLAB_ALLPASSDESCRIPTION_H
+
+
+#include "EffectDescription.h"
+#include "../CombFilter.h"
+namespace Effect {
+class AllPassDescription: public EffectDescription<AllPassDescription, 2> {
+public:
+ static constexpr std::string_view getName() {
+ return std::string_view("AllPass");
+ }
+
+ static constexpr std::string_view getCategory() {
+ return std::string_view("Comb");
+ }
+
+ static constexpr std::array<ParamType, getNumParams()> getParams() {
+ return std::array<ParamType, getNumParams()> {
+ ParamType("Delay (samples)", 1, 500, 10),
+ ParamType("Scale", 0.01, 0.99, 0.5),
+ };
+ }
+ template<class iter_type>
+ static _ef<iter_type> buildEffect(std::array<float, getNumParams()> paramArr) {
+ return _ef<iter_type> {
+ CombFilter<iter_type>{paramArr[1], 1, -(paramArr[1]), static_cast<int>(paramArr[0])}
+ };
+ }
+};
+} //namespace Effect
+
+#endif //ANDROID_FXLAB_ALLPASSDESCRIPTION_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/descrip/DistortionDescription.h b/apps/fxlab/app/src/main/cpp/effects/descrip/DistortionDescription.h
new file mode 100644
index 0000000..db88122
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/descrip/DistortionDescription.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_DISTORTIONDESCRIPTION_H
+#define ANDROID_FXLAB_DISTORTIONDESCRIPTION_H
+
+#include "EffectDescription.h"
+#include "../SingleFunctionEffects.h"
+
+namespace Effect {
+class DistortionDescription: public EffectDescription<DistortionDescription, 1> {
+public:
+ static constexpr std::string_view getName() {
+ return std::string_view("Distortion");
+ }
+
+ static constexpr std::string_view getCategory() {
+ return std::string_view("Nonlinear");
+ }
+
+ static constexpr std::array<ParamType, getNumParams()> getParams() {
+ return std::array<ParamType, getNumParams()> {
+ ParamType("Drive (db)", -10, 50, 0)
+ };
+ }
+
+ template<class iter_type>
+ static _ef<iter_type> buildEffect(std::array<float, getNumParams()> paramArr) {
+ double scale = pow(2.0, paramArr[0] / 10);
+ return DriveControl<iter_type> {SingleFunctionEffects::distortion<iter_type>, scale};
+ }
+};
+}
+#endif //ANDROID_FXLAB_DISTORTIONDESCRIPTION_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/descrip/DoublingDescription.h b/apps/fxlab/app/src/main/cpp/effects/descrip/DoublingDescription.h
new file mode 100644
index 0000000..18d62d3
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/descrip/DoublingDescription.h
@@ -0,0 +1,33 @@
+#ifndef ANDROID_FXLAB_DOUBLINGDESCRIPTION_H
+#define ANDROID_FXLAB_DOUBLINGDESCRIPTION_H
+
+#include "EffectDescription.h"
+#include "../DoublingEffect.h"
+
+namespace Effect {
+class DoublingDescription: public EffectDescription<DoublingDescription, 3> {
+public:
+ static constexpr std::string_view getName() {
+ return std::string_view("Doubling");
+ }
+
+ static constexpr std::string_view getCategory() {
+ return std::string_view("Delay");
+ }
+
+ static constexpr std::array<ParamType, getNumParams()> getParams() {
+ return std::array<ParamType, getNumParams()> {
+ ParamType("Depth (ms)", 10, 100, 40),
+ ParamType("Delay (ms)", 1, 100, 40),
+ ParamType("Noise pass", 1, 10, 4),
+ };
+ }
+ template<class iter_type>
+ static _ef<iter_type> buildEffect(std::array<float, getNumParams()> paramArr) {
+ return _ef<iter_type> {
+ DoublingEffect<iter_type>{paramArr[0], paramArr[1], paramArr[2]}
+ };
+ }
+};
+} //namespace Effect
+#endif //ANDROID_FXLAB_DOUBLINGDESCRIPTION_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/descrip/EchoDescription.h b/apps/fxlab/app/src/main/cpp/effects/descrip/EchoDescription.h
new file mode 100644
index 0000000..26cb19c
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/descrip/EchoDescription.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_ECHODESCRIPTION_H
+#define ANDROID_FXLAB_ECHODESCRIPTION_H
+
+#include "../EchoEffect.h"
+
+namespace Effect {
+
+class EchoDescription: public EffectDescription<EchoDescription, 2> {
+public:
+ static constexpr std::string_view getName() {
+ return std::string_view("Echo");
+ }
+
+ static constexpr std::string_view getCategory() {
+ return std::string_view("Delay");
+ }
+
+ static constexpr std::array<ParamType, getNumParams()> getParams() {
+ return std::array<ParamType, getNumParams()> {
+ ParamType("Feedback", 0, 1, 0.5),
+ ParamType("Delay (ms)", 50, 500, 100),
+ };
+ }
+ template<class iter_type>
+ static _ef<iter_type> buildEffect(std::array<float, getNumParams()> paramArr) {
+ return _ef<iter_type> {
+ EchoEffect<iter_type>{paramArr[0], paramArr[1]}
+ };
+ }
+};
+
+} //namespace Effect
+#endif //ANDROID_FXLAB_ECHODESCRIPTION_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/descrip/EffectDescription.h b/apps/fxlab/app/src/main/cpp/effects/descrip/EffectDescription.h
new file mode 100644
index 0000000..e3955b0
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/descrip/EffectDescription.h
@@ -0,0 +1,107 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_EFFECTDESCRIPTION_H
+#define ANDROID_FXLAB_EFFECTDESCRIPTION_H
+
+#include <functional>
+#include <array>
+#include <vector>
+#include <string_view>
+
+template<class iter_type>
+using _ef = std::function<void(iter_type, iter_type)>;
+
+// Only Effect Descriptions should use this namespace
+namespace Effect {
+
+ class ParamType {
+ public:
+ constexpr ParamType(std::string_view name, float minVal, float maxVal, float defVal) :
+ kName(name),
+ kMinVal(minVal),
+ kMaxVal(maxVal),
+ kDefVal(defVal) {}
+
+ constexpr ParamType(const ParamType &other) = delete;
+
+ ParamType &operator=(const ParamType &other) = delete;
+
+ constexpr ParamType(ParamType &&other) = default;
+
+ constexpr ParamType &operator=(ParamType &&other) = delete;
+
+ const std::string_view kName;
+ const float kMinVal, kMaxVal, kDefVal;
+ };
+
+
+// EffectType is the description subclass, N is num of params
+// Function implementations in this class contain shared behavior
+// Which can be shadowed.
+ template<class EffectType, size_t N>
+ class EffectDescription {
+ public:
+ // These methods will be shadowed by subclasses
+
+ static constexpr size_t getNumParams() {
+ return N;
+ }
+
+ static constexpr std::array<float, N> getEmptyParams() {
+ return std::array<float, EffectType::getNumParams()>();
+ }
+
+ static constexpr std::string_view getName();
+
+ static constexpr std::string_view getCategory();
+
+ static constexpr std::array<ParamType, N> getParams();
+
+ template<class iter_type>
+ static _ef<iter_type> buildEffect(std::array<float, N> paramArr);
+
+
+ template<class iter_type>
+ static _ef<iter_type> buildDefaultEffect() {
+ auto params = EffectType::getEmptyParams();
+ int i = 0;
+ for (ParamType &mParam: EffectType::getParams()) {
+ params[i++] = mParam.kDefVal;
+ }
+ return EffectType::template buildEffect<iter_type>(params);
+ }
+
+ // The default behavior is new effect, can be shadowed
+ template<class iter_type>
+ static _ef<iter_type> modifyEffect(
+ _ef<iter_type> /* effect */, std::array<float, N> paramArr) {
+ return EffectType::template buildEffect<iter_type>(std::move(paramArr));
+ }
+ template <class iter_type>
+ static _ef<iter_type> modifyEffectVec(
+ _ef<iter_type> effect, std::vector<float> paramVec) {
+ std::array<float, N> arr;
+ std::copy_n(paramVec.begin(), N, arr.begin());
+ return EffectType::template modifyEffect<iter_type>(
+ std::move(effect), std::move(arr));
+ }
+ };
+
+} // namespace effect
+
+
+#endif //ANDROID_FXLAB_EFFECTDESCRIPTION_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/descrip/FIRDescription.h b/apps/fxlab/app/src/main/cpp/effects/descrip/FIRDescription.h
new file mode 100644
index 0000000..6aec5ea
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/descrip/FIRDescription.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_FIRDESCRIPTION_H
+#define ANDROID_FXLAB_FIRDESCRIPTION_H
+
+#include "EffectDescription.h"
+#include "../CombFilter.h"
+namespace Effect {
+class FIRDescription: public EffectDescription<FIRDescription, 2> {
+public:
+ static constexpr std::string_view getName() {
+ return std::string_view("FIR");
+ }
+
+ static constexpr std::string_view getCategory() {
+ return std::string_view("Comb");
+ }
+
+ static constexpr std::array<ParamType, getNumParams()> getParams() {
+ return std::array<ParamType, getNumParams()> {
+ ParamType("Delay (samples)", 1, 500, 10),
+ ParamType("Gain", 0, 0.99, 0.5),
+ };
+ }
+ template<class iter_type>
+ static _ef<iter_type> buildEffect(std::array<float, getNumParams()> paramArr) {
+ return _ef<iter_type> {
+ CombFilter<iter_type>{1, paramArr[1], 0, static_cast<int>(paramArr[0])}
+ };
+ }
+};
+} //namespace Effect
+#endif //ANDROID_FXLAB_FIRDESCRIPTION_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/descrip/FlangerDescription.h b/apps/fxlab/app/src/main/cpp/effects/descrip/FlangerDescription.h
new file mode 100644
index 0000000..08a822b
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/descrip/FlangerDescription.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_FLANGERDESCRIPTION_H
+#define ANDROID_FXLAB_FLANGERDESCRIPTION_H
+
+#include "EffectDescription.h"
+#include "../FlangerEffect.h"
+
+namespace Effect {
+class FlangerDescription : public EffectDescription<FlangerDescription, 3> {
+public:
+ static constexpr std::string_view getName() {
+ return std::string_view("Flanger");
+ }
+
+ static constexpr std::string_view getCategory() {
+ return std::string_view("Delay");
+ }
+
+ static constexpr std::array<ParamType, getNumParams()> getParams() {
+ return std::array<ParamType, 3> {
+ ParamType("Depth (ms)", 0.1, 2, 1),
+ ParamType("Frequency", 0.1, 1, 0.2),
+ ParamType("Feedback", 0, 0.95, 0.7071),
+ };
+ }
+
+ template <class iter_type>
+ static _ef<iter_type> buildEffect(std::array<float, getNumParams()> paramArr) {
+ return std::function<void(iter_type, iter_type)> {
+ FlangerEffect<iter_type>{paramArr[0], paramArr[1], paramArr[2]}
+ };
+ }
+
+};
+} // namespace Effect
+#endif //ANDROID_FXLAB_FLANGERDESCRIPTION_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/descrip/GainDescription.h b/apps/fxlab/app/src/main/cpp/effects/descrip/GainDescription.h
new file mode 100644
index 0000000..ec4a203
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/descrip/GainDescription.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_GAINDESCRIPTION_H
+#define ANDROID_FXLAB_GAINDESCRIPTION_H
+#include "EffectDescription.h"
+#include <cmath>
+#include <iostream>
+
+namespace Effect {
+class GainDescription : public EffectDescription<GainDescription, 1> {
+public:
+ static constexpr std::string_view getName() {
+ return std::string_view("Gain");
+ }
+
+ static constexpr std::string_view getCategory() {
+ return std::string_view("None");
+ }
+
+ static constexpr std::array<ParamType, getNumParams()> getParams() {
+ return std::array <ParamType, getNumParams()> {
+ ParamType("Gain", -30, 20, 0)
+ };
+ }
+
+ template<class iter_type>
+ static _ef<iter_type> buildEffect(std::array<float, getNumParams()> paramArr) {
+ float scale = paramArr[0] / 10;
+ return _ef<iter_type> {
+ [=](iter_type beg, iter_type end) {
+ for (; beg != end; ++beg) *beg *= pow(2.0, scale);
+ }
+ };
+ }
+};
+} // namespace Effect
+#endif //ANDROID_FXLAB_GAINDESCRIPTION_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/descrip/IIRDescription.h b/apps/fxlab/app/src/main/cpp/effects/descrip/IIRDescription.h
new file mode 100644
index 0000000..aab41ee
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/descrip/IIRDescription.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_IIRDESCRIPTION_H
+#define ANDROID_FXLAB_IIRDESCRIPTION_H
+
+
+#include "../CombFilter.h"
+
+namespace Effect {
+class IIRDescription: public EffectDescription<IIRDescription, 3> {
+public:
+ static constexpr std::string_view getName() {
+ return std::string_view("IIR");
+ }
+
+ static constexpr std::string_view getCategory() {
+ return std::string_view("Comb");
+ }
+
+ static constexpr std::array<ParamType, getNumParams()> getParams() {
+ return std::array<ParamType, getNumParams()> {
+ ParamType("Delay (samples)", 1, 500, 10),
+ ParamType("Gain", 0, 0.99, 0.5),
+ ParamType("Scale", 0.25, 0.99, 0.5)
+ };
+ }
+ template<class iter_type>
+ static _ef<iter_type> buildEffect(std::array<float, getNumParams()> paramArr) {
+ return _ef<iter_type> {
+ CombFilter<iter_type>{paramArr[2], 0, paramArr[1], static_cast<int>(paramArr[0])}
+ };
+ }
+};
+} //namespace Effect
+#
+#endif //ANDROID_FXLAB_IIRDESCRIPTION_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/descrip/OverdriveDescription.h b/apps/fxlab/app/src/main/cpp/effects/descrip/OverdriveDescription.h
new file mode 100644
index 0000000..f5ca5e3
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/descrip/OverdriveDescription.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_OVERDRIVEDESCRIPTION_H
+#define ANDROID_FXLAB_OVERDRIVEDESCRIPTION_H
+
+#include <limits>
+#include <cmath>
+#include <iterator>
+
+#include "EffectDescription.h"
+#include "../SingleFunctionEffects.h"
+#include "../DriveControl.h"
+
+namespace Effect {
+class OverdriveDescription : public EffectDescription<OverdriveDescription, 1> {
+public:
+ static constexpr std::string_view getName() {
+ return std::string_view("Overdrive");
+ }
+
+ static constexpr std::string_view getCategory() {
+ return std::string_view("Nonlinear");
+ }
+
+ static constexpr std::array<ParamType, getNumParams()> getParams() {
+ return std::array<ParamType, getNumParams()>{
+ ParamType("Drive (db)", -10, 50, 0)
+ };
+ }
+
+ template<class iter_type>
+ static _ef<iter_type> buildEffect(std::array<float, getNumParams()> paramArr) {
+ double scale = pow(2.0, paramArr[0] / 10);
+ return DriveControl<iter_type> {SingleFunctionEffects::overdrive<iter_type>, scale};
+ }
+};
+}
+#endif //ANDROID_FXLAB_OVERDRIVEDESCRIPTION_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/descrip/PassthroughDescription.h b/apps/fxlab/app/src/main/cpp/effects/descrip/PassthroughDescription.h
new file mode 100644
index 0000000..9a309ae
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/descrip/PassthroughDescription.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_PASSTHROUGHDESCRIPTION_H
+#define ANDROID_FXLAB_PASSTHROUGHDESCRIPTION_H
+
+
+#include "EffectDescription.h"
+
+namespace Effect {
+
+class PassthroughDescription : public EffectDescription<PassthroughDescription, 0> {
+public:
+
+ static constexpr std::string_view getName() {
+ return std::string_view("Passthrough");
+ }
+
+ static constexpr std::string_view getCategory() {
+ return std::string_view("None");
+ }
+
+ static constexpr std::array<ParamType, getNumParams()> getParams() {
+ return std::array<ParamType, 0>();
+ }
+
+ template<class iter_type>
+ static _ef<iter_type> buildEffect(std::array<float, getNumParams()> ) {
+ return [](iter_type, iter_type) {};
+ }
+
+};
+
+} // namespace Effect
+
+#endif //ANDROID_FXLAB_PASSTHROUGHDESCRIPTION_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/descrip/SlapbackDescription.h b/apps/fxlab/app/src/main/cpp/effects/descrip/SlapbackDescription.h
new file mode 100644
index 0000000..cd77656
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/descrip/SlapbackDescription.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_SLAPBACKDESCRIPTION_H
+#define ANDROID_FXLAB_SLAPBACKDESCRIPTION_H
+
+#include "EffectDescription.h"
+#include "../SlapbackEffect.h"
+
+
+namespace Effect {
+
+class SlapbackDescription: public EffectDescription<SlapbackDescription, 2> {
+public:
+ static constexpr std::string_view getName() {
+ return std::string_view("Slapback");
+ }
+
+ static constexpr std::string_view getCategory() {
+ return std::string_view("Delay");
+ }
+
+ static constexpr std::array<ParamType, getNumParams()> getParams() {
+ return std::array<ParamType, getNumParams()> {
+ ParamType("Feedforward", 0, 2, 0.5),
+ ParamType("Delay (ms)", 30, 100, 50),
+ };
+ }
+ template<class iter_type>
+ static _ef<iter_type> buildEffect(std::array<float, getNumParams()> paramArr) {
+ return _ef<iter_type> {
+ SlapbackEffect<iter_type>{paramArr[0], paramArr[1]}
+ };
+ }
+};
+
+} //namespace Effect
+#endif //ANDROID_FXLAB_SLAPBACKDESCRIPTION_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/descrip/TremoloDescription.h b/apps/fxlab/app/src/main/cpp/effects/descrip/TremoloDescription.h
new file mode 100644
index 0000000..1341468
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/descrip/TremoloDescription.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_TREMOLODESCRIPTION_H
+#define ANDROID_FXLAB_TREMOLODESCRIPTION_H
+
+#include "EffectDescription.h"
+#include "../TremoloEffect.h"
+namespace Effect {
+class TremoloDescription : public EffectDescription<TremoloDescription, 2> {
+public:
+ static constexpr std::string_view getName() {
+ return std::string_view("Tremolo");
+ }
+
+ static constexpr std::string_view getCategory() {
+ return std::string_view("None");
+ }
+
+ static constexpr std::array<ParamType, getNumParams()> getParams() {
+ return std::array<ParamType, getNumParams()> {
+ ParamType("Frequency", 0.1, 5.0, 2),
+ ParamType("Height", 0.05, 0.45, 0.25)
+ };
+ }
+
+ template<class iter_type>
+ static _ef<iter_type> buildEffect(std::array<float, getNumParams()> paramArr ) {
+ return _ef<iter_type> {
+ TremoloEffect {paramArr[0], paramArr[1]}};
+ }
+};
+} // namespace Effect
+#endif // ANDROID_FXLAB_TREMOLODESCRIPTION_H
\ No newline at end of file
diff --git a/apps/fxlab/app/src/main/cpp/effects/descrip/VibratoDescription.h b/apps/fxlab/app/src/main/cpp/effects/descrip/VibratoDescription.h
new file mode 100644
index 0000000..f152faa
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/descrip/VibratoDescription.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_VIBRATODESCRIPTION_H
+#define ANDROID_FXLAB_VIBRATODESCRIPTION_H
+
+#include "EffectDescription.h"
+#include "../VibratroEffect.h"
+
+namespace Effect {
+class VibratoDescription : public EffectDescription<VibratoDescription, 2> {
+public:
+ static constexpr std::string_view getName() {
+ return std::string_view("Vibrato");
+ }
+
+ static constexpr std::string_view getCategory() {
+ return std::string_view("Delay");
+ }
+
+ static constexpr std::array<ParamType, getNumParams()> getParams() {
+ return std::array<ParamType, getNumParams()> {
+ ParamType("Depth (ms)", 0, 3, 1),
+ ParamType("Frequency", 0.1, 5, 1)
+ };
+ }
+ template<class iter_type>
+ static _ef<iter_type> buildEffect(std::array<float, getNumParams()> paramArr) {
+ return _ef<iter_type> {
+ VibratoEffect<iter_type>{paramArr[0], paramArr[1]}
+ };
+ }
+};
+} //namespace Effect
+#endif //ANDROID_FXLAB_VIBRATODESCRIPTION_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/descrip/WhiteChorusDescription.h b/apps/fxlab/app/src/main/cpp/effects/descrip/WhiteChorusDescription.h
new file mode 100644
index 0000000..d1d71d7
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/descrip/WhiteChorusDescription.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_WHITECHORUSDESCRIPTION_H
+#define ANDROID_FXLAB_WHITECHORUSDESCRIPTION_H
+
+#include "EffectDescription.h"
+#include "../WhiteChorusEffect.h"
+
+namespace Effect {
+class WhiteChorusDescription : public EffectDescription<WhiteChorusDescription, 3> {
+public:
+ static constexpr std::string_view getName() {
+ return std::string_view("White Chorus");
+ }
+
+ static constexpr std::string_view getCategory() {
+ return std::string_view("Delay");
+ }
+
+ static constexpr std::array<ParamType, getNumParams()> getParams() {
+ return std::array<ParamType, getNumParams()> {
+ ParamType("Depth (ms)", 1, 30, 10),
+ ParamType("Delay (ms)", 1, 30, 10),
+ ParamType("Noise pass", 1, 10, 4),
+ };
+ }
+ template<class iter_type>
+ static _ef<iter_type> buildEffect(std::array<float, getNumParams()> paramArr) {
+ return _ef<iter_type> {
+ WhiteChorusEffect<iter_type>{paramArr[0], paramArr[1], paramArr[2]}
+ };
+ }
+};
+} //namespace Effect
+
+#endif //ANDROID_FXLAB_WHITECHORUSDESCRIPTION_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/utils/DelayLine.h b/apps/fxlab/app/src/main/cpp/effects/utils/DelayLine.h
new file mode 100644
index 0000000..d0d753c
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/utils/DelayLine.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_DELAYLINE_H
+#define ANDROID_FXLAB_DELAYLINE_H
+
+#include <vector>
+
+
+template<class T>
+class DelayLine {
+public:
+ DelayLine(std::size_t size): N(size), mArr(N, 0) { }
+ void push(const T& value) {
+ mArr[mfront++] = value;
+ if (mfront == N) mfront = 0;
+ }
+ // indexed from last value written backwards
+ // i.e T-1 to T-N
+ const T& operator[](int i) {
+ int index = mfront - i;
+ if (index < 0) index += N;
+ return mArr[index];
+ }
+
+private:
+ const int N;
+ int mfront = 0;
+ std::vector<T> mArr;
+};
+#endif //ANDROID_FXLAB_DELAYLINE_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/utils/PhaseAccumulator.h b/apps/fxlab/app/src/main/cpp/effects/utils/PhaseAccumulator.h
new file mode 100644
index 0000000..cfd3210
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/utils/PhaseAccumulator.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_PHASEACCUMULATOR_H
+#define ANDROID_FXLAB_PHASEACCUMULATOR_H
+
+#include <cmath>
+
+
+
+class PhaseAccumulator {
+public:
+ PhaseAccumulator(float frequency, float sampleRate):
+ f(frequency),
+ fs(sampleRate) { }
+ float incrementPhase() {
+ mPhase += kDelta;
+ if (mPhase >= kTwoPi) mPhase -= kTwoPi;
+ return mPhase;
+ }
+private:
+ float mPhase = 0;
+ const float f;
+ const float fs;
+ static constexpr float kTwoPi = M_PI * 2;
+ const float kDelta = kTwoPi * f / fs;
+};
+#endif //ANDROID_FXLAB_PHASEACCUMULATOR_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/utils/SineWave.h b/apps/fxlab/app/src/main/cpp/effects/utils/SineWave.h
new file mode 100644
index 0000000..a9ce09f
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/utils/SineWave.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_SINEWAVE_H
+#define ANDROID_FXLAB_SINEWAVE_H
+
+#include "PhaseAccumulator.h"
+
+class SineWave {
+public:
+ // freq in hz
+ SineWave(float frequency, float amplitude, int sampleRate):
+ mPhasor(frequency, sampleRate),
+ kAmplitude(amplitude) { }
+
+ float operator() () {
+ return kAmplitude * sinf(mPhasor.incrementPhase());
+ }
+
+private:
+ PhaseAccumulator mPhasor;
+ const float kAmplitude;
+};
+#endif //ANDROID_FXLAB_SINEWAVE_H
diff --git a/apps/fxlab/app/src/main/cpp/effects/utils/WhiteNoise.h b/apps/fxlab/app/src/main/cpp/effects/utils/WhiteNoise.h
new file mode 100644
index 0000000..aca54b5
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/effects/utils/WhiteNoise.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_WHITENOISE_H
+#define ANDROID_FXLAB_WHITENOISE_H
+class WhiteNoise {
+ const int kScale;
+public:
+ WhiteNoise(int scale): kScale(scale) {}
+ float operator() () {
+ static int counter = 0;
+ static float r_0, r_1 = 0;
+ if (counter == 0) {
+ r_0 = r_1;
+ r_1 = (static_cast <float> (rand()) / static_cast <float> (RAND_MAX)) * 2 - 1;
+ }
+ float ret = r_0 + counter * (r_1 - r_0) / kScale;
+ if (++counter == kScale) counter = 0;
+ if (ret > 0.99) return 0.99f;
+ if (ret < -0.99) return -0.99f;
+ return ret;
+ }
+};
+#endif //ANDROID_FXLAB_WHITENOISE_H
diff --git a/apps/fxlab/app/src/main/cpp/logging_macros.h b/apps/fxlab/app/src/main/cpp/logging_macros.h
new file mode 100644
index 0000000..d2f4328
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/logging_macros.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2017 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 __SAMPLE_ANDROID_DEBUG_H__
+#define __SAMPLE_ANDROID_DEBUG_H__
+#include <android/log.h>
+
+#if 1
+#ifndef MODULE_NAME
+#define MODULE_NAME "AUDIO-APP"
+#endif
+
+#define LOGV(...) __android_log_print(ANDROID_LOG_VERBOSE, MODULE_NAME, __VA_ARGS__)
+#define LOGD(...) __android_log_print(ANDROID_LOG_DEBUG, MODULE_NAME, __VA_ARGS__)
+#define LOGI(...) __android_log_print(ANDROID_LOG_INFO, MODULE_NAME, __VA_ARGS__)
+#define LOGW(...) __android_log_print(ANDROID_LOG_WARN,MODULE_NAME, __VA_ARGS__)
+#define LOGE(...) __android_log_print(ANDROID_LOG_ERROR,MODULE_NAME, __VA_ARGS__)
+#define LOGF(...) __android_log_print(ANDROID_LOG_FATAL,MODULE_NAME, __VA_ARGS__)
+
+#define ASSERT(cond, ...) if (!(cond)) {__android_log_assert(#cond, MODULE_NAME, __VA_ARGS__);}
+#else
+
+#define LOGV(...)
+#define LOGD(...)
+#define LOGI(...)
+#define LOGW(...)
+#define LOGE(...)
+#define LOGF(...)
+#define ASSERT(cond, ...)
+
+#endif
+
+#endif // __SAMPLE_ANDROID_DEBUG_H__
diff --git a/apps/fxlab/app/src/main/cpp/native-lib.cpp b/apps/fxlab/app/src/main/cpp/native-lib.cpp
new file mode 100644
index 0000000..5ccdfb0
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/native-lib.cpp
@@ -0,0 +1,159 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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.
+ */
+
+#include <jni.h>
+
+#include <string>
+#include <functional>
+#include <utility>
+#include <vector>
+
+#include "DuplexEngine.h"
+#include "effects/Effects.h"
+#include "FunctionList.h"
+
+
+// JNI Utility functions and globals
+static DuplexEngine *enginePtr = nullptr;
+
+// Actual JNI interface
+extern "C" {
+
+JNIEXPORT void JNICALL
+Java_com_mobileer_androidfxlab_NativeInterface_createAudioEngine(
+ JNIEnv,
+ jobject /* this */) {
+ enginePtr = new DuplexEngine();
+}
+JNIEXPORT void JNICALL
+Java_com_mobileer_androidfxlab_NativeInterface_destroyAudioEngine(
+ JNIEnv,
+ jobject /* this */) {
+ if (!enginePtr) return;
+ delete enginePtr;
+ enginePtr = nullptr;
+}
+
+JNIEXPORT jobjectArray JNICALL
+Java_com_mobileer_androidfxlab_NativeInterface_getEffects(JNIEnv *env, jobject) {
+ jclass jcl = env->FindClass("com/mobileer/androidfxlab/datatype/EffectDescription");
+ jclass jparamcl = env->FindClass("com/mobileer/androidfxlab/datatype/ParamDescription");
+ assert (jcl != nullptr && jparamcl != nullptr);
+
+ auto jparamMethodId = env->GetMethodID(jparamcl, "<init>", "(Ljava/lang/String;FFF)V");
+ auto jMethodId = env->GetMethodID(jcl, "<init>",
+ "(Ljava/lang/String;Ljava/lang/String;I[Lcom/mobileer/androidfxlab/datatype/ParamDescription;)V");
+
+ auto arr = env->NewObjectArray(numEffects, jcl, nullptr);
+ auto lambda = [&](auto &arg, int i) {
+ const auto ¶mArr = arg.getParams();
+ auto jparamArr = env->NewObjectArray(paramArr.size(), jparamcl, nullptr);
+ int c = 0;
+ for (auto const &elem: paramArr) {
+ jobject j = env->NewObject(jparamcl, jparamMethodId,
+ env->NewStringUTF(std::string(elem.kName).c_str()),
+ elem.kMinVal, elem.kMaxVal, elem.kDefVal);
+ assert(j != nullptr);
+ env->SetObjectArrayElement(jparamArr, c++, j);
+ }
+ jobject j = env->NewObject(jcl, jMethodId,
+ env->NewStringUTF(std::string(arg.getName()).c_str()),
+ env->NewStringUTF(std::string(arg.getCategory()).c_str()),
+ i, jparamArr);
+ assert(j != nullptr);
+ env->SetObjectArrayElement(arr, i, j);
+ };
+ int i = 0;
+ std::apply([&i, &lambda](auto &&... args) mutable { ((lambda(args, i++)), ...); },
+ EffectsTuple);
+ return arr;
+}
+
+JNIEXPORT void JNICALL
+Java_com_mobileer_androidfxlab_NativeInterface_addDefaultEffectNative(JNIEnv *, jobject, jint jid) {
+ if (!enginePtr) return;
+ auto id = static_cast<int>(jid);
+
+ std::visit([id](auto &&stack) {
+ std::function<void(decltype(stack.getType()), decltype(stack.getType()))> f;
+ int i = 0;
+ std::apply([id, &f, &i](auto &&... args) mutable {
+ ((f = (i++ == id) ?
+ args.template buildDefaultEffect<decltype(stack.getType())>() : f), ...);
+ }, EffectsTuple);
+ stack.addEffect(std::move(f));
+ }, enginePtr->functionList);
+}
+JNIEXPORT void JNICALL
+Java_com_mobileer_androidfxlab_NativeInterface_removeEffectNative(JNIEnv *, jobject, jint jind) {
+ if (!enginePtr) return;
+ auto ind = static_cast<size_t>(jind);
+ std::visit([ind](auto &&arg) {
+ arg.removeEffectAt(ind);
+ }, enginePtr->functionList);
+}
+JNIEXPORT void JNICALL
+Java_com_mobileer_androidfxlab_NativeInterface_rotateEffectNative(JNIEnv *, jobject,
+ jint jfrom, jint jto) {
+ if (!enginePtr) return;
+ auto from = static_cast<size_t>(jfrom);
+ auto to = static_cast<size_t>(jto);
+
+ std::visit([from, to](auto &&arg) {
+ arg.rotateEffectAt(from, to);
+ }, enginePtr->functionList);
+}
+
+JNIEXPORT void JNICALL
+Java_com_mobileer_androidfxlab_NativeInterface_modifyEffectNative(
+ JNIEnv *env, jobject, jint jid, jint jindex, jfloatArray params) {
+ if (!enginePtr) return;
+ int id = static_cast<int>(jid);
+ int index = static_cast<size_t>(jindex);
+
+ jfloat *data = env->GetFloatArrayElements(params, nullptr);
+ std::vector<float> arr{data, data + env->GetArrayLength(params)};
+ env->ReleaseFloatArrayElements(params, data, 0);
+ std::visit([&arr, &id, &index](auto &&stack) {
+ std::function<void(decltype(stack.getType()), decltype(stack.getType()))> ef;
+ int i = 0;
+ std::apply([&](auto &&... args) mutable {
+ ((ef = (i++ == id) ?
+ args.modifyEffectVec(ef, arr) : ef), ...);
+ }, EffectsTuple);
+ stack.modifyEffectAt(index, std::move(ef));
+ }, enginePtr->functionList);
+}
+JNIEXPORT void JNICALL
+Java_com_mobileer_androidfxlab_NativeInterface_enableEffectNative(
+ JNIEnv *, jobject, jint jindex, jboolean jenable) {
+ if (!enginePtr) return;
+ auto ind = static_cast<size_t>(jindex);
+ auto enable = static_cast<bool>(jenable);
+ std::visit([ind, enable](auto &&args) {
+ args.enableEffectAt(ind, enable);
+ }, enginePtr->functionList);
+}
+JNIEXPORT void JNICALL
+Java_com_mobileer_androidfxlab_NativeInterface_enablePassthroughNative(
+ JNIEnv *, jobject, jboolean jenable) {
+ if (!enginePtr) return;
+ std::visit([enable = static_cast<bool>(jenable)](auto &&args) {
+ args.mute(!enable);
+ }, enginePtr->functionList);
+}
+} //extern C
+
diff --git a/apps/fxlab/app/src/main/cpp/tests/.gitignore b/apps/fxlab/app/src/main/cpp/tests/.gitignore
new file mode 100644
index 0000000..47c0d34
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/tests/.gitignore
@@ -0,0 +1,5 @@
+CMakeFiles/
+CMakeCache.txt
+cmake_install.cmake
+Makefile
+runTests
diff --git a/apps/fxlab/app/src/main/cpp/tests/CMakeLists.txt b/apps/fxlab/app/src/main/cpp/tests/CMakeLists.txt
new file mode 100644
index 0000000..ae1f0e7
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/tests/CMakeLists.txt
@@ -0,0 +1,15 @@
+cmake_minimum_required(VERSION 3.4.1)
+
+project(Effects_Tests)
+# We need C++17 to test
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
+# Locate GTest
+find_package(GTest REQUIRED)
+include_directories(${GTEST_INCLUDE_DIRS})
+
+# Link runTests with what we want to test and the GTest and pthread library
+add_executable(runTests testEffects.cpp)
+target_link_libraries(runTests ${GTEST_LIBRARIES} pthread)
diff --git a/apps/fxlab/app/src/main/cpp/tests/DelayLineEffectTest.h b/apps/fxlab/app/src/main/cpp/tests/DelayLineEffectTest.h
new file mode 100644
index 0000000..de9c15a
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/tests/DelayLineEffectTest.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_DELAYLINEEFFECTTEST_H
+#define ANDROID_FXLAB_DELAYLINEEFFECTTEST_H
+
+
+#include <gtest/gtest.h>
+
+#include "../effects/DelayLineEffect.h"
+
+
+namespace {
+ TEST(DelayLineEffectTest, SingleFeedForwardTest) {
+ DelayLineEffect<float*> e1 {0, 1, 0, 1, 0, [](){return 0;}};
+ std::array<float, 5> inputData {1, 0, 0.5, 0.25, 0};
+ for (int i = 0; i < 5; i++){
+ e1(inputData[i]);
+ }
+ EXPECT_EQ(inputData[0], 0);
+ EXPECT_EQ(inputData[1], 1);
+ EXPECT_EQ(inputData[2], 0);
+ EXPECT_EQ(inputData[3], 0.5);
+ EXPECT_EQ(inputData[4], 0.25);
+ }
+ TEST(DelayLineEffectTest, FFandBlendTest) {
+ DelayLineEffect<float*> e1 {1, 1, 0, 1, 0, [](){return 0;}};
+ std::array<float, 5> inputData {1, 0, 0.5, 0.25, 0};
+ for (int i = 0; i < 5; i++) {
+ e1(inputData[i]);
+ }
+ EXPECT_EQ(inputData[0], 1);
+ EXPECT_EQ(inputData[1], 1);
+ EXPECT_EQ(inputData[2], 0.5);
+ EXPECT_EQ(inputData[3], 0.75);
+ EXPECT_EQ(inputData[4], 0.25);
+ }
+}
+#endif //ANDROID_FXLAB_DELAYLINEEFFECTTEST_H
diff --git a/apps/fxlab/app/src/main/cpp/tests/DelayLineTest.h b/apps/fxlab/app/src/main/cpp/tests/DelayLineTest.h
new file mode 100644
index 0000000..8fb40fe
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/tests/DelayLineTest.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_DELAYLINETEST_H
+#define ANDROID_FXLAB_DELAYLINETEST_H
+
+#include "../effects/utils/DelayLine.h"
+#include <gtest/gtest.h>
+
+namespace {
+TEST(DelayLineTest, CreateAndAdd) {
+ DelayLine<float> d1{10};
+ d1.push(1.0);
+ EXPECT_EQ(d1[1], 1.0);
+}
+TEST(DelayLineTest, UnfilledAddSequence) {
+ DelayLine<float> d1{10};
+d1.push(1.0);
+d1.push(2.0);
+ d1.push(3.0);
+ EXPECT_EQ(d1[1], 3.0);
+ EXPECT_EQ(d1[2], 2.0);
+ EXPECT_EQ(d1[3], 1.0);
+}
+TEST(DelayLineTest, FilledAddSequence) {
+ DelayLine<float> d1{4};
+ d1.push(1.0);
+ d1.push(2.0);
+ d1.push(3.0);
+ d1.push(4.0);
+ EXPECT_EQ(d1[1], 4.0);
+ EXPECT_EQ(d1[2], 3.0);
+ EXPECT_EQ(d1[3], 2.0);
+ EXPECT_EQ(d1[4], 1.0);
+ d1.push(5.0);
+ EXPECT_EQ(d1[1], 5.0);
+ EXPECT_EQ(d1[2], 4.0);
+ EXPECT_EQ(d1[3], 3.0);
+ EXPECT_EQ(d1[4], 2.0);
+ d1.push(6.0);
+ EXPECT_EQ(d1[1], 6.0);
+ EXPECT_EQ(d1[2], 5.0);
+ EXPECT_EQ(d1[3], 4.0);
+ EXPECT_EQ(d1[4], 3.0);
+}
+
+} // namespace
+#endif //ANDROID_FXLAB_DELAYLINETEST_H
diff --git a/apps/fxlab/app/src/main/cpp/tests/TypeTests.h b/apps/fxlab/app/src/main/cpp/tests/TypeTests.h
new file mode 100644
index 0000000..b7e242e
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/tests/TypeTests.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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_FXLAB_TYPETESTS_H
+#define ANDROID_FXLAB_TYPETESTS_H
+
+
+#include <gtest/gtest.h>
+#include <iostream>
+#include <unistd.h>
+
+#include "../effects/Effects.h"
+#include "../FunctionList.h"
+namespace {
+TEST(TypeTests, Templating) {
+ TremoloEffect t {1, 2};
+ VibratoEffect<float*> v {1, 2};
+ float x = 5;
+ t(x);
+ auto pass = std::get<0>(EffectsTuple);
+ auto descrip = std::get<1>(EffectsTuple);
+ auto vibdes = std::get<2>(EffectsTuple);
+ auto gaindes = std::get<3>(EffectsTuple);
+ auto f = descrip.buildDefaultEffect<float*>();
+ auto g = vibdes.buildDefaultEffect<float*>();
+ auto h = vibdes.buildDefaultEffect<float*>();
+ f(&x, &x + 1); g(&x, &x + 1); h(&x, &x + 1);
+ auto j = gaindes.buildDefaultEffect<float*>();
+ auto k = gaindes.modifyEffect<float*>(j, std::array<float, 1> {10});
+ float floatArr[4] = {1,2,3, 4};
+ for (int i =0; i < 4; i++) {
+ k(floatArr + i, floatArr + i + 1);
+ }
+ auto arr = std::array<float, 1> {10};
+ auto data = std::array<int, 5> {1, 2, 3, 4, 5};
+ std::function<void(int*, int*)> fe = std::get<Effect::GainDescription>(EffectsTuple).buildEffect<int*>(arr);
+ fe(data.begin(), data.end());
+ EXPECT_EQ(data[0], 2);
+
+}
+}
+#endif //ANDROID_FXLAB_TYPETESTS_H
diff --git a/apps/fxlab/app/src/main/cpp/tests/testEffects.cpp b/apps/fxlab/app/src/main/cpp/tests/testEffects.cpp
new file mode 100644
index 0000000..b40c712
--- /dev/null
+++ b/apps/fxlab/app/src/main/cpp/tests/testEffects.cpp
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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.
+ */
+
+
+#include <gtest/gtest.h>
+
+#include "DelayLineTest.h"
+#include "DelayLineEffectTest.h"
+#include "TypeTests.h"
+// This is the runner for the various unit tests in the test directory
+// Currently it is designed to be run on the development machine via CMAKE
+// Since this tests effects, it should be independent of Android, and simply test locally
+int main(int argc, char **argv) {
+ ::testing::InitGoogleTest(&argc, argv);
+ return RUN_ALL_TESTS();
+}
diff --git a/apps/fxlab/app/src/main/java/com/mobileer/androidfxlab/EffectsAdapter.kt b/apps/fxlab/app/src/main/java/com/mobileer/androidfxlab/EffectsAdapter.kt
new file mode 100644
index 0000000..1054c07
--- /dev/null
+++ b/apps/fxlab/app/src/main/java/com/mobileer/androidfxlab/EffectsAdapter.kt
@@ -0,0 +1,200 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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 com.mobileer.androidfxlab
+
+import android.view.LayoutInflater
+import android.view.MotionEvent
+import android.view.View
+import android.view.ViewGroup
+import android.widget.LinearLayout
+import android.widget.SeekBar
+import android.widget.TextView
+import androidx.recyclerview.widget.ItemTouchHelper
+import androidx.recyclerview.widget.RecyclerView
+import com.google.android.material.switchmaterial.SwitchMaterial
+import com.mobileer.androidfxlab.R
+import com.mobileer.androidfxlab.datatype.Effect
+import kotlin.math.max
+import kotlin.math.min
+
+object EffectsAdapter :
+ RecyclerView.Adapter<EffectsAdapter.EffectsHolder>() {
+ val effectList = arrayListOf<Effect>()
+ lateinit var mRecyclerView: RecyclerView
+
+ // This class adapts view in effect_view.xml for Effect class
+ class EffectsHolder(val parentView: ViewGroup) : RecyclerView.ViewHolder(parentView) {
+ private val layoutContainer: LinearLayout = parentView.findViewById(R.id.effectContainer)
+ lateinit var effect: Effect
+ private val floatFormat = "%4.2f"
+ private var index: Int = -1
+ fun bindEffect(bindedEffect: Effect, position: Int) {
+ effect = bindedEffect
+ index = position
+ // Clear all views
+ layoutContainer.removeAllViews()
+ View.inflate(layoutContainer.context,
+ R.layout.effect_header, layoutContainer)
+ val header: LinearLayout = layoutContainer.findViewById(R.id.effectHeader)
+ val dragHandleView: View = header.findViewById(R.id.cat_card_list_item_drag_handle)
+ val checkBoxView: SwitchMaterial = header.findViewById(R.id.effectEnabled)
+ val label: TextView = header.findViewById(R.id.effectLabel)
+ // Bind header views
+ label.text = effect.name
+ checkBoxView.isChecked = effectList[index].effectValue.enable
+ checkBoxView.setOnCheckedChangeListener { _, checked ->
+ effectList[index].effectValue.enable = checked
+ NativeInterface.enableEffectAt(checked, index)
+ }
+ dragHandleView.setOnTouchListener { _, event ->
+ if (event.action == MotionEvent.ACTION_DOWN) {
+ itemTouchHelper.startDrag(this@EffectsHolder)
+ return@setOnTouchListener true
+ }
+ false
+ }
+ header.setOnTouchListener { _, event ->
+ if (event.action == MotionEvent.ACTION_DOWN) {
+ itemTouchHelper.startSwipe(this@EffectsHolder)
+ return@setOnTouchListener true
+ }
+ false
+ }
+ // Add correct number of spinners based on effect
+ for (ind in effect.effectDescription.paramArray.withIndex()) {
+ val param = ind.value
+ val counter = ind.index
+ val view = View.inflate(layoutContainer.context,
+ R.layout.param_seek, null)
+ layoutContainer.addView(view)
+ val paramWrapper: LinearLayout = view.findViewById(R.id.paramWrapper)
+ val paramLabelView: TextView = paramWrapper.findViewById(R.id.paramLabel)
+ val minLabelView: TextView = paramWrapper.findViewById(R.id.minLabel)
+ val maxLabelView: TextView = paramWrapper.findViewById(R.id.maxLabel)
+ val curLabelView: TextView = paramWrapper.findViewById(R.id.curLabel)
+ val seekBar: SeekBar = paramWrapper.findViewById(R.id.seekBar)
+ paramLabelView.text = param.paramName
+ minLabelView.text = floatFormat.format(param.minValue)
+ maxLabelView.text = floatFormat.format(param.maxValue)
+ seekBar.progress =
+ ((param.defaultValue - param.minValue) * 100 / (param.maxValue - param.minValue)).toInt()
+ curLabelView.text = floatFormat.format(param.defaultValue)
+ // Bind param listeners to effects
+ seekBar.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener {
+ val paramInd = counter
+ override fun onStartTrackingTouch(p0: SeekBar?) {}
+
+ override fun onStopTrackingTouch(seekbar: SeekBar?) {
+ val fracprogress =
+ ((seekbar!!.progress / 100f) * (param.maxValue - param.minValue) + param.minValue)
+ curLabelView.text = floatFormat.format(fracprogress)
+ effectList[index].effectValue.params[paramInd] = fracprogress
+ NativeInterface.updateParamsAt(effect, index)
+ }
+
+ override fun onProgressChanged(
+ seekBar: SeekBar?, progress: Int, fromUser: Boolean
+ ) {
+ }
+ })
+ }
+ }
+
+ }
+
+ override fun onCreateViewHolder(
+ parent: ViewGroup,
+ viewType: Int
+ ): EffectsHolder {
+ val myView = LayoutInflater.from(parent.context)
+ .inflate(R.layout.effect_view, parent, false)
+ return EffectsHolder(myView as ViewGroup)
+ }
+
+ override fun onBindViewHolder(holder: EffectsHolder, position: Int) {
+ holder.bindEffect(effectList[position], position)
+ }
+
+ override fun getItemCount() = effectList.size
+
+ override fun onAttachedToRecyclerView(recyclerView: RecyclerView) {
+ super.onAttachedToRecyclerView(recyclerView)
+ mRecyclerView = recyclerView
+ itemTouchHelper.attachToRecyclerView(mRecyclerView)
+ }
+
+ private val itemTouchHelper = ItemTouchHelper(object : ItemTouchHelper.SimpleCallback(
+ ItemTouchHelper.UP or ItemTouchHelper.DOWN, ItemTouchHelper.RIGHT or ItemTouchHelper.LEFT
+ ) {
+
+ var dragFrom = -1
+ var dragTo = -1
+ override fun onMove(
+ recyclerView: RecyclerView,
+ viewHolder: RecyclerView.ViewHolder,
+ target: RecyclerView.ViewHolder
+ ): Boolean {
+
+ val fromPos = viewHolder.adapterPosition
+ val toPos = target.adapterPosition
+ if (dragFrom == -1) {
+ dragFrom = fromPos
+ }
+ dragTo = toPos
+ effectList.add(toPos, effectList.removeAt(fromPos))
+ recyclerView.adapter?.notifyItemMoved(fromPos, toPos)
+ return true
+ }
+
+ override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) {
+ val position = viewHolder.adapterPosition
+ effectList.removeAt(position)
+ mRecyclerView.adapter?.notifyItemRemoved(position)
+ NativeInterface.removeEffectAt(position)
+ for (i in position until effectList.size) {
+ var holder = mRecyclerView.findViewHolderForAdapterPosition(i) as EffectsHolder
+ holder.bindEffect(holder.effect, i)
+ }
+ }
+
+ override fun clearView(
+ recyclerView: RecyclerView,
+ viewHolder: RecyclerView.ViewHolder
+ ) {
+ super.clearView(recyclerView, viewHolder)
+ if (dragFrom != -1 && dragTo != -1 && dragFrom != dragTo) {
+ rotateItems(dragFrom, dragTo)
+ }
+ dragFrom = -1
+ dragTo = -1
+ }
+
+ override fun isLongPressDragEnabled(): Boolean = false
+ override fun isItemViewSwipeEnabled(): Boolean = false
+
+ fun rotateItems(fromPos: Int, toPos: Int) {
+ val a = min(fromPos, toPos)
+ val b = max(fromPos, toPos)
+ for (i in a..b) {
+ var holder = mRecyclerView.findViewHolderForAdapterPosition(i) as EffectsHolder
+ holder.bindEffect(holder.effect, i)
+ }
+ NativeInterface.rotateEffectAt(fromPos, toPos)
+ }
+ })
+
+}
diff --git a/apps/fxlab/app/src/main/java/com/mobileer/androidfxlab/MainActivity.kt b/apps/fxlab/app/src/main/java/com/mobileer/androidfxlab/MainActivity.kt
new file mode 100644
index 0000000..8b1b93c
--- /dev/null
+++ b/apps/fxlab/app/src/main/java/com/mobileer/androidfxlab/MainActivity.kt
@@ -0,0 +1,134 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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 com.mobileer.androidfxlab
+
+import android.Manifest
+import android.content.pm.PackageManager
+import android.os.Bundle
+import android.view.SubMenu
+import android.view.WindowManager
+import android.widget.PopupMenu
+import androidx.appcompat.app.AlertDialog
+import androidx.appcompat.app.AppCompatActivity
+import androidx.core.app.ActivityCompat
+import androidx.core.content.ContextCompat
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import com.google.android.material.floatingactionbutton.FloatingActionButton
+import com.mobileer.androidfxlab.R
+import com.mobileer.androidfxlab.datatype.Effect
+
+class MainActivity : AppCompatActivity() {
+
+ private lateinit var recyclerView: RecyclerView
+
+ private lateinit var addButton: FloatingActionButton
+
+
+ val MY_PERMISSIONS_RECORD_AUDIO = 17
+
+ override fun onCreate(savedInstanceState: Bundle?) {
+ super.onCreate(savedInstanceState)
+ setContentView(R.layout.activity_main)
+ window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+
+ if (ContextCompat.checkSelfPermission(this, Manifest.permission.RECORD_AUDIO)
+ != PackageManager.PERMISSION_GRANTED
+ ) {
+ ActivityCompat.requestPermissions(
+ this,
+ arrayOf(Manifest.permission.RECORD_AUDIO),
+ MY_PERMISSIONS_RECORD_AUDIO
+ )
+ }
+
+ recyclerView =
+ findViewById<RecyclerView>(R.id.my_recycler_view).apply { adapter =
+ EffectsAdapter
+ }
+ recyclerView.layoutManager = LinearLayoutManager(this)
+
+ addButton = findViewById(R.id.floating_add_button)
+ addButton.setOnClickListener { view ->
+ val popup = PopupMenu(this, view)
+ popup.menuInflater.inflate(R.menu.add_menu, popup.menu)
+ val menuMap = HashMap<String, SubMenu>()
+ for (effectName in NativeInterface.effectDescriptionMap.keys) {
+ val cat = NativeInterface.effectDescriptionMap.getValue(effectName).category
+ if (cat == "None") {
+ popup.menu.add(effectName)
+ } else {
+ val subMenu = menuMap[cat] ?: popup.menu.addSubMenu(cat)
+ subMenu.add(effectName)
+ menuMap[cat] = subMenu
+ }
+ }
+ popup.setOnMenuItemClickListener { menuItem ->
+ NativeInterface.effectDescriptionMap[menuItem.title]?.let {
+ val toAdd = Effect(it)
+ EffectsAdapter.effectList.add(toAdd)
+ NativeInterface.addEffect(toAdd)
+ EffectsAdapter.notifyItemInserted(EffectsAdapter.effectList.size - 1)
+ true
+ }
+ false
+ }
+ popup.show()
+ }
+ }
+
+ override fun onResume() {
+ super.onResume()
+ if (ContextCompat.checkSelfPermission(this, Manifest.permission.RECORD_AUDIO)
+ == PackageManager.PERMISSION_GRANTED
+ ) {
+ NativeInterface.createAudioEngine()
+ }
+ }
+
+ override fun onPause() {
+ NativeInterface.destroyAudioEngine()
+ EffectsAdapter.effectList.clear()
+ EffectsAdapter.notifyDataSetChanged()
+ super.onPause()
+ }
+
+ override fun onRequestPermissionsResult(
+ requestCode: Int,
+ permissions: Array<out String>,
+ grantResults: IntArray
+ ) {
+ super.onRequestPermissionsResult(requestCode, permissions, grantResults)
+ when (requestCode) {
+ MY_PERMISSIONS_RECORD_AUDIO -> {
+ if ((grantResults.isNotEmpty() && grantResults[0] == PackageManager.PERMISSION_GRANTED)) {
+ NativeInterface.createAudioEngine()
+ } else {
+ val builder = AlertDialog.Builder(this).apply {
+ setMessage(
+ "Audio effects require audio input permissions! \n" +
+ "Enable permissions and restart app to use."
+ )
+ setTitle("Permission Error")
+ }
+ builder.create().show()
+ }
+ return
+ }
+ }
+ }
+}
diff --git a/apps/fxlab/app/src/main/java/com/mobileer/androidfxlab/NativeInterface.kt b/apps/fxlab/app/src/main/java/com/mobileer/androidfxlab/NativeInterface.kt
new file mode 100644
index 0000000..97c19bd
--- /dev/null
+++ b/apps/fxlab/app/src/main/java/com/mobileer/androidfxlab/NativeInterface.kt
@@ -0,0 +1,110 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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 com.mobileer.androidfxlab
+
+import android.util.Log
+import com.mobileer.androidfxlab.datatype.Effect
+import com.mobileer.androidfxlab.datatype.EffectDescription
+
+object NativeInterface {
+ // Used to load the 'native-lib' library on application startup.
+ val effectDescriptionMap: Map<String, EffectDescription>
+
+ init {
+ System.loadLibrary("native-lib")
+ effectDescriptionMap = getEffects()
+ .associateBy { it.name }
+ Log.d("MAP", effectDescriptionMap.toString())
+ }
+
+ // Functions/Members called by UI code
+ // Adds effect at end of effect list
+ fun addEffect(effect: Effect) {
+ Log.d("INTERFACE", String.format("Effect %s added", effect.name))
+ addDefaultEffectNative(
+ convertEffectToId(
+ effect
+ )
+ )
+ }
+
+ // Enables effect at index
+ fun enableEffectAt(turnOn: Boolean, index: Int) {
+ Log.d("INTERFACE", String.format("Effect %b at index %d", turnOn, index))
+ enableEffectNative(index, turnOn)
+ }
+
+ // Signals params were updated at index
+ fun updateParamsAt(effect: Effect, index: Int) {
+ Log.d(
+ "INTERFACE",
+ String.format(
+ "Params were updated at index %d to %f",
+ index,
+ effect.effectValue.params[0]
+ )
+ )
+ modifyEffectNative(
+ convertEffectToId(
+ effect
+ ), index, effect.effectValue.params
+ )
+ }
+
+ // Removes effect at index
+ fun removeEffectAt(index: Int) {
+ Log.d("INTERFACE", String.format("Effect was removed at index %d", index))
+ removeEffectNative(index)
+ }
+
+ // Rotates existing effect from index to another
+ fun rotateEffectAt(from: Int, to: Int) {
+ Log.d("INTERFACE", String.format("Effect was rotated from %d to %d", from, to))
+ rotateEffectNative(from, to)
+ }
+
+ fun enable(enable: Boolean) {
+ Log.d("INTERFACE", "Enabling effects")
+ enablePassthroughNative(enable)
+ }
+
+ // State of audio engine
+ external fun createAudioEngine()
+
+ external fun destroyAudioEngine()
+
+ // These functions populate effectDescriptionMap
+ private external fun getEffects(): Array<EffectDescription>
+
+ // These functions mutate the function list
+ // Adds effect at index
+ private external fun addDefaultEffectNative(id: Int)
+
+ private external fun removeEffectNative(index: Int)
+
+ private external fun rotateEffectNative(from: Int, to: Int)
+
+ private external fun modifyEffectNative(id: Int, index: Int, params: FloatArray)
+
+ private external fun enableEffectNative(index: Int, enable: Boolean)
+
+ private external fun enablePassthroughNative(enable: Boolean)
+
+ // These are utility functions
+ private fun convertEffectToId(effect: Effect): Int =
+ effectDescriptionMap[effect.name]?.id ?: -1
+}
diff --git a/apps/fxlab/app/src/main/java/com/mobileer/androidfxlab/datatype/Effect.kt b/apps/fxlab/app/src/main/java/com/mobileer/androidfxlab/datatype/Effect.kt
new file mode 100644
index 0000000..28f4856
--- /dev/null
+++ b/apps/fxlab/app/src/main/java/com/mobileer/androidfxlab/datatype/Effect.kt
@@ -0,0 +1,26 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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 com.mobileer.androidfxlab.datatype
+
+data class Effect(val effectDescription: EffectDescription) {
+ val name = effectDescription.name
+
+ val effectValue = EffectValue(effectDescription.name,
+ FloatArray(effectDescription.paramArray.size) { i -> effectDescription.paramArray[i].defaultValue }
+ )
+
+}
\ No newline at end of file
diff --git a/apps/fxlab/app/src/main/java/com/mobileer/androidfxlab/datatype/EffectDescription.kt b/apps/fxlab/app/src/main/java/com/mobileer/androidfxlab/datatype/EffectDescription.kt
new file mode 100644
index 0000000..11594d7
--- /dev/null
+++ b/apps/fxlab/app/src/main/java/com/mobileer/androidfxlab/datatype/EffectDescription.kt
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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 com.mobileer.androidfxlab.datatype
+
+data class EffectDescription(
+ val name: String,
+ val category: String,
+ val id: Int,
+ val paramArray: Array<ParamDescription>
+) {
+ override fun equals(other: Any?): Boolean {
+ if (this === other) return true
+ if (javaClass != other?.javaClass) return false
+ other as EffectDescription
+ if (id != other.id) return false
+ return true
+ }
+ override fun hashCode(): Int = id
+}
diff --git a/apps/fxlab/app/src/main/java/com/mobileer/androidfxlab/datatype/EffectValue.kt b/apps/fxlab/app/src/main/java/com/mobileer/androidfxlab/datatype/EffectValue.kt
new file mode 100644
index 0000000..5fadf44
--- /dev/null
+++ b/apps/fxlab/app/src/main/java/com/mobileer/androidfxlab/datatype/EffectValue.kt
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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 com.mobileer.androidfxlab.datatype
+
+data class EffectValue (val name: String,
+ val params: FloatArray,
+ var enable: Boolean = true) {
+ override fun equals(other: Any?): Boolean {
+ if (this === other) return true
+ if (javaClass != other?.javaClass) return false
+
+ other as EffectValue
+
+ if (name != other.name) return false
+ if (!params.contentEquals(other.params)) return false
+
+ return true
+ }
+
+ override fun hashCode(): Int = 31 * name.hashCode() + params.contentHashCode()
+}
\ No newline at end of file
diff --git a/apps/fxlab/app/src/main/java/com/mobileer/androidfxlab/datatype/ParamDescription.kt b/apps/fxlab/app/src/main/java/com/mobileer/androidfxlab/datatype/ParamDescription.kt
new file mode 100644
index 0000000..8909f94
--- /dev/null
+++ b/apps/fxlab/app/src/main/java/com/mobileer/androidfxlab/datatype/ParamDescription.kt
@@ -0,0 +1,23 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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 com.mobileer.androidfxlab.datatype
+
+data class ParamDescription (
+ val paramName: String,
+ val minValue: Float,
+ val maxValue: Float,
+ val defaultValue: Float)
\ No newline at end of file
diff --git a/apps/fxlab/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/apps/fxlab/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 0000000..60d9d56
--- /dev/null
+++ b/apps/fxlab/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,50 @@
+<!--
+ ~ Copyright 2019 Google LLC
+ ~
+ ~ 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
+ ~
+ ~ https://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.
+ -->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+ xmlns:aapt="http://schemas.android.com/aapt"
+ android:width="108dp"
+ android:height="108dp"
+ android:viewportHeight="108"
+ android:viewportWidth="108">
+ <path
+ android:fillType="evenOdd"
+ android:pathData="M32,64C32,64 38.39,52.99 44.13,50.95C51.37,48.37 70.14,49.57 70.14,49.57L108.26,87.69L108,109.01L75.97,107.97L32,64Z"
+ android:strokeColor="#00000000"
+ android:strokeWidth="1">
+ <aapt:attr name="android:fillColor">
+ <gradient
+ android:endX="78.5885"
+ android:endY="90.9159"
+ android:startX="48.7653"
+ android:startY="61.0927"
+ android:type="linear">
+ <item
+ android:color="#44000000"
+ android:offset="0.0"/>
+ <item
+ android:color="#00000000"
+ android:offset="1.0"/>
+ </gradient>
+ </aapt:attr>
+ </path>
+ <path
+ android:fillColor="#FFFFFF"
+ android:fillType="nonZero"
+ android:pathData="M66.94,46.02L66.94,46.02C72.44,50.07 76,56.61 76,64L32,64C32,56.61 35.56,50.11 40.98,46.06L36.18,41.19C35.45,40.45 35.45,39.3 36.18,38.56C36.91,37.81 38.05,37.81 38.78,38.56L44.25,44.05C47.18,42.57 50.48,41.71 54,41.71C57.48,41.71 60.78,42.57 63.68,44.05L69.11,38.56C69.84,37.81 70.98,37.81 71.71,38.56C72.44,39.3 72.44,40.45 71.71,41.19L66.94,46.02ZM62.94,56.92C64.08,56.92 65,56.01 65,54.88C65,53.76 64.08,52.85 62.94,52.85C61.8,52.85 60.88,53.76 60.88,54.88C60.88,56.01 61.8,56.92 62.94,56.92ZM45.06,56.92C46.2,56.92 47.13,56.01 47.13,54.88C47.13,53.76 46.2,52.85 45.06,52.85C43.92,52.85 43,53.76 43,54.88C43,56.01 43.92,56.92 45.06,56.92Z"
+ android:strokeColor="#00000000"
+ android:strokeWidth="1"/>
+</vector>
diff --git a/apps/fxlab/app/src/main/res/drawable/ic_add.xml b/apps/fxlab/app/src/main/res/drawable/ic_add.xml
new file mode 100644
index 0000000..a56f8f9
--- /dev/null
+++ b/apps/fxlab/app/src/main/res/drawable/ic_add.xml
@@ -0,0 +1,25 @@
+<!--
+ ~ Copyright 2019 Google LLC
+ ~
+ ~ 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
+ ~
+ ~ https://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.
+ -->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+ android:width="24dp"
+ android:height="24dp"
+ android:viewportWidth="24"
+ android:viewportHeight="24">
+ <path
+ android:fillColor="#FF000000"
+ android:pathData="M19,13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/>
+</vector>
diff --git a/apps/fxlab/app/src/main/res/drawable/ic_baseline_drag_indicator.xml b/apps/fxlab/app/src/main/res/drawable/ic_baseline_drag_indicator.xml
new file mode 100644
index 0000000..ddb3123
--- /dev/null
+++ b/apps/fxlab/app/src/main/res/drawable/ic_baseline_drag_indicator.xml
@@ -0,0 +1,25 @@
+<!--
+ ~ Copyright 2019 Google LLC
+ ~
+ ~ 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
+ ~
+ ~ https://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.
+ -->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+ android:width="24dp"
+ android:height="24dp"
+ android:viewportWidth="24"
+ android:viewportHeight="24">
+ <path
+ android:fillColor="@color/colorAccent"
+ android:pathData="M11,18c0,1.1 -0.9,2 -2,2s-2,-0.9 -2,-2 0.9,-2 2,-2 2,0.9 2,2zM9,10c-1.1,0 -2,0.9 -2,2s0.9,2 2,2 2,-0.9 2,-2 -0.9,-2 -2,-2zM9,4c-1.1,0 -2,0.9 -2,2s0.9,2 2,2 2,-0.9 2,-2 -0.9,-2 -2,-2zM15,8c1.1,0 2,-0.9 2,-2s-0.9,-2 -2,-2 -2,0.9 -2,2 0.9,2 2,2zM15,10c-1.1,0 -2,0.9 -2,2s0.9,2 2,2 2,-0.9 2,-2 -0.9,-2 -2,-2zM15,16c-1.1,0 -2,0.9 -2,2s0.9,2 2,2 2,-0.9 2,-2 -0.9,-2 -2,-2z"/>
+</vector>
diff --git a/apps/fxlab/app/src/main/res/drawable/ic_launcher_background.xml b/apps/fxlab/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 0000000..305bcec
--- /dev/null
+++ b/apps/fxlab/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,90 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ ~ Copyright 2019 Google LLC
+ ~
+ ~ 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
+ ~
+ ~ https://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.
+ -->
+
+<vector
+ xmlns:android="http://schemas.android.com/apk/res/android"
+ android:height="108dp"
+ android:width="108dp"
+ android:viewportHeight="108"
+ android:viewportWidth="108">
+ <path android:fillColor="#008577"
+ android:pathData="M0,0h108v108h-108z"/>
+ <path android:fillColor="#00000000" android:pathData="M9,0L9,108"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M19,0L19,108"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M29,0L29,108"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M39,0L39,108"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M49,0L49,108"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M59,0L59,108"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M69,0L69,108"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M79,0L79,108"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M89,0L89,108"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M99,0L99,108"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M0,9L108,9"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M0,19L108,19"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M0,29L108,29"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M0,39L108,39"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M0,49L108,49"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M0,59L108,59"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M0,69L108,69"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M0,79L108,79"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M0,89L108,89"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M0,99L108,99"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M19,29L89,29"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M19,39L89,39"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M19,49L89,49"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M19,59L89,59"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M19,69L89,69"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M19,79L89,79"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M29,19L29,89"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M39,19L39,89"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M49,19L49,89"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M59,19L59,89"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M69,19L69,89"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+ <path android:fillColor="#00000000" android:pathData="M79,19L79,89"
+ android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+</vector>
diff --git a/apps/fxlab/app/src/main/res/layout/activity_main.xml b/apps/fxlab/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 0000000..d6eae70
--- /dev/null
+++ b/apps/fxlab/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ ~ Copyright 2019 Google LLC
+ ~
+ ~ 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
+ ~
+ ~ https://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.
+ -->
+
+
+<androidx.coordinatorlayout.widget.CoordinatorLayout
+xmlns:android="http://schemas.android.com/apk/res/android"
+xmlns:app="http://schemas.android.com/apk/res-auto"
+android:layout_width="match_parent"
+android:layout_height="match_parent">
+
+<!-- Main content -->
+ <androidx.recyclerview.widget.RecyclerView
+ android:id="@+id/my_recycler_view"
+ android:layout_width="match_parent"
+ android:layout_height="match_parent"
+ android:scrollbars="vertical" />
+
+ <com.google.android.material.floatingactionbutton.FloatingActionButton
+ android:id="@+id/floating_add_button"
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:layout_gravity="bottom|right"
+ android:layout_margin="16dp"
+ app:srcCompat="@drawable/ic_add"/>
+
+</androidx.coordinatorlayout.widget.CoordinatorLayout>
diff --git a/apps/fxlab/app/src/main/res/layout/effect_header.xml b/apps/fxlab/app/src/main/res/layout/effect_header.xml
new file mode 100644
index 0000000..78a30bb
--- /dev/null
+++ b/apps/fxlab/app/src/main/res/layout/effect_header.xml
@@ -0,0 +1,65 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ ~ Copyright 2019 Google LLC
+ ~
+ ~ 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
+ ~
+ ~ https://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.
+ -->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+ xmlns:app="http://schemas.android.com/apk/res-auto"
+ xmlns:tools="http://schemas.android.com/tools"
+ android:id="@+id/effectHeader"
+ android:layout_width="match_parent"
+ android:layout_height="wrap_content"
+ android:gravity="center_vertical"
+ android:orientation="horizontal"
+ android:padding="10dp">
+
+ <LinearLayout
+ android:layout_width="0dp"
+ android:layout_height="wrap_content"
+ android:layout_weight="1"
+ android:orientation="horizontal">
+
+ <TextView
+ android:id="@+id/effectLabel"
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:textAppearance="?attr/textAppearanceHeadline6" />
+
+ <com.google.android.material.switchmaterial.SwitchMaterial
+ android:id="@+id/effectEnabled"
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:checked="true"
+ android:enabled="true" />
+
+ </LinearLayout>
+
+ <LinearLayout
+ android:layout_width="0dp"
+ android:layout_height="wrap_content"
+ android:layout_weight="1"
+ android:gravity="right"
+ android:orientation="horizontal">
+
+ <ImageView
+ android:id="@+id/cat_card_list_item_drag_handle"
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:layout_gravity="end|center_vertical"
+ app:srcCompat="@drawable/ic_baseline_drag_indicator"
+ tools:targetApi="jelly_bean" />
+ </LinearLayout>
+
+</LinearLayout>
\ No newline at end of file
diff --git a/apps/fxlab/app/src/main/res/layout/effect_view.xml b/apps/fxlab/app/src/main/res/layout/effect_view.xml
new file mode 100644
index 0000000..e009293
--- /dev/null
+++ b/apps/fxlab/app/src/main/res/layout/effect_view.xml
@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ ~ Copyright 2019 Google LLC
+ ~
+ ~ 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
+ ~
+ ~ https://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.
+ -->
+
+
+
+<com.google.android.material.card.MaterialCardView
+xmlns:android="http://schemas.android.com/apk/res/android"
+android:id="@+id/cat_card_list_item_card"
+android:layout_width="match_parent"
+android:layout_height="wrap_content"
+android:layout_marginLeft="16dp"
+android:layout_marginTop="8dp"
+android:layout_marginRight="16dp"
+android:layout_marginBottom="8dp"
+android:minHeight="118dp" >
+
+ <LinearLayout
+ android:layout_width="match_parent"
+ android:layout_height="match_parent"
+ android:id="@+id/effectContainer"
+ android:orientation="vertical"/>
+
+
+</com.google.android.material.card.MaterialCardView>
\ No newline at end of file
diff --git a/apps/fxlab/app/src/main/res/layout/param_seek.xml b/apps/fxlab/app/src/main/res/layout/param_seek.xml
new file mode 100644
index 0000000..d0ece96
--- /dev/null
+++ b/apps/fxlab/app/src/main/res/layout/param_seek.xml
@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ ~ Copyright 2019 Google LLC
+ ~
+ ~ 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
+ ~
+ ~ https://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.
+ -->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+ android:id="@+id/paramWrapper"
+ android:layout_width="match_parent"
+ android:layout_height="match_parent"
+ android:gravity="center"
+ android:padding="5dp">
+
+ <TextView
+ android:id="@+id/paramLabel"
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:layout_weight="1"
+ android:textAppearance="@style/TextAppearance.MaterialComponents.Subtitle1" />
+
+ <TextView
+ android:id="@+id/curLabel"
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:layout_weight="0.5"
+ android:textAppearance="@style/TextAppearance.MaterialComponents.Subtitle2" />
+
+ <TextView
+ android:id="@+id/minLabel"
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:layout_weight="0.25"
+ android:textAppearance="@style/TextAppearance.MaterialComponents.Caption" />
+
+ <SeekBar
+ android:id="@+id/seekBar"
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:layout_weight="5" />
+
+ <TextView
+ android:id="@+id/maxLabel"
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:layout_weight="0.25"
+ android:textAppearance="@style/TextAppearance.MaterialComponents.Caption" />
+
+</LinearLayout>
\ No newline at end of file
diff --git a/apps/fxlab/app/src/main/res/menu/add_menu.xml b/apps/fxlab/app/src/main/res/menu/add_menu.xml
new file mode 100644
index 0000000..f66dae1
--- /dev/null
+++ b/apps/fxlab/app/src/main/res/menu/add_menu.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ ~ Copyright 2019 Google LLC
+ ~
+ ~ 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
+ ~
+ ~ https://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.
+ -->
+
+<menu>
+</menu>
\ No newline at end of file
diff --git a/apps/fxlab/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/apps/fxlab/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 0000000..d405331
--- /dev/null
+++ b/apps/fxlab/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ ~ Copyright 2019 Google LLC
+ ~
+ ~ 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
+ ~
+ ~ https://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.
+ -->
+
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+ <background android:drawable="@drawable/ic_launcher_background"/>
+ <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+</adaptive-icon>
\ No newline at end of file
diff --git a/apps/fxlab/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/apps/fxlab/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 0000000..d405331
--- /dev/null
+++ b/apps/fxlab/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ ~ Copyright 2019 Google LLC
+ ~
+ ~ 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
+ ~
+ ~ https://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.
+ -->
+
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+ <background android:drawable="@drawable/ic_launcher_background"/>
+ <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+</adaptive-icon>
\ No newline at end of file
diff --git a/apps/fxlab/app/src/main/res/mipmap-hdpi/ic_launcher.png b/apps/fxlab/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 0000000..898f3ed
--- /dev/null
+++ b/apps/fxlab/app/src/main/res/mipmap-hdpi/ic_launcher.png
Binary files differ
diff --git a/apps/fxlab/app/src/main/res/mipmap-hdpi/ic_launcher_round.png b/apps/fxlab/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 0000000..dffca36
--- /dev/null
+++ b/apps/fxlab/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
Binary files differ
diff --git a/apps/fxlab/app/src/main/res/mipmap-mdpi/ic_launcher.png b/apps/fxlab/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 0000000..64ba76f
--- /dev/null
+++ b/apps/fxlab/app/src/main/res/mipmap-mdpi/ic_launcher.png
Binary files differ
diff --git a/apps/fxlab/app/src/main/res/mipmap-mdpi/ic_launcher_round.png b/apps/fxlab/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 0000000..dae5e08
--- /dev/null
+++ b/apps/fxlab/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
Binary files differ
diff --git a/apps/fxlab/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/apps/fxlab/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 0000000..e5ed465
--- /dev/null
+++ b/apps/fxlab/app/src/main/res/mipmap-xhdpi/ic_launcher.png
Binary files differ
diff --git a/apps/fxlab/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/apps/fxlab/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 0000000..14ed0af
--- /dev/null
+++ b/apps/fxlab/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
Binary files differ
diff --git a/apps/fxlab/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/apps/fxlab/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 0000000..b0907ca
--- /dev/null
+++ b/apps/fxlab/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
Binary files differ
diff --git a/apps/fxlab/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/apps/fxlab/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 0000000..d8ae031
--- /dev/null
+++ b/apps/fxlab/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
Binary files differ
diff --git a/apps/fxlab/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/apps/fxlab/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 0000000..2c18de9
--- /dev/null
+++ b/apps/fxlab/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
Binary files differ
diff --git a/apps/fxlab/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/apps/fxlab/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 0000000..beed3cd
--- /dev/null
+++ b/apps/fxlab/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
Binary files differ
diff --git a/apps/fxlab/app/src/main/res/values/colors.xml b/apps/fxlab/app/src/main/res/values/colors.xml
new file mode 100644
index 0000000..4f45ddd
--- /dev/null
+++ b/apps/fxlab/app/src/main/res/values/colors.xml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ ~ Copyright 2019 Google LLC
+ ~
+ ~ 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
+ ~
+ ~ https://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.
+ -->
+
+<resources>
+ <color name="colorPrimary">#6200EE</color>
+ <color name="colorPrimaryDark">#3700B3</color>
+ <color name="colorAccent">#03DAC6</color>
+ <color name="colorAccentDark">#018786</color>
+</resources>
diff --git a/apps/fxlab/app/src/main/res/values/strings.xml b/apps/fxlab/app/src/main/res/values/strings.xml
new file mode 100644
index 0000000..c9d2c80
--- /dev/null
+++ b/apps/fxlab/app/src/main/res/values/strings.xml
@@ -0,0 +1,19 @@
+<!--
+ ~ Copyright 2019 Google LLC
+ ~
+ ~ 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
+ ~
+ ~ https://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.
+ -->
+
+<resources>
+ <string name="app_name">AndroidFX Lab</string>
+</resources>
diff --git a/apps/fxlab/app/src/main/res/values/styles.xml b/apps/fxlab/app/src/main/res/values/styles.xml
new file mode 100644
index 0000000..ae45870
--- /dev/null
+++ b/apps/fxlab/app/src/main/res/values/styles.xml
@@ -0,0 +1,27 @@
+<!--
+ ~ Copyright 2019 Google LLC
+ ~
+ ~ 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
+ ~
+ ~ https://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.
+ -->
+
+<resources>
+
+ <!-- Base application theme. -->
+ <style name="AppTheme" parent="Theme.MaterialComponents.DayNight.NoActionBar">
+ <!-- Customize your theme here. -->
+ <item name="colorPrimary">@color/colorPrimary</item>
+ <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
+ <item name="colorAccent">@color/colorAccent</item>
+ </style>
+
+</resources>
diff --git a/apps/fxlab/build.gradle b/apps/fxlab/build.gradle
new file mode 100644
index 0000000..90ad2e7
--- /dev/null
+++ b/apps/fxlab/build.gradle
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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.
+ */
+
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+
+buildscript {
+ ext.kotlin_version = '1.3.31'
+ repositories {
+ google()
+ jcenter()
+
+ }
+ dependencies {
+ classpath 'com.android.tools.build:gradle:3.4.2'
+ classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+ // NOTE: Do not place your application dependencies here; they belong
+ // in the individual module build.gradle files
+ }
+}
+
+allprojects {
+ repositories {
+ google()
+ jcenter()
+
+ }
+}
+
+task clean(type: Delete) {
+ delete rootProject.buildDir
+}
diff --git a/apps/fxlab/docs/Dev-Guide.md b/apps/fxlab/docs/Dev-Guide.md
new file mode 100644
index 0000000..bb35f93
--- /dev/null
+++ b/apps/fxlab/docs/Dev-Guide.md
@@ -0,0 +1,46 @@
+# Development
+
+The effects included are designed to be as portable as possible, as well as making it easy to add additional effects.
+
+## Building
+
+To build the app, simply open the project in android studio and build. The app integrates Oboe via a git submodule. Make sure
+when cloning the repository to clone the submodule as well using `git clone --recursive`, or `git submodule update --init --recursive`.
+
+To update the version of Oboe being used, descend into the Oboe repository [(oboe location)](../app/src/main/cpp)
+and update from its remote. Then, call `git submodule update` in this repository. Alternatively `git submodule update --recursive --remote` will pull the latest version of Oboe from remote.
+
+Although the CMake file requires android headers (to use Oboe), the effects themselves can be compiled with any C++17 compliant compiler.
+
+## Architecture
+
+The UI code (Kotlin) calls native code through the JNI bridge to query information about the various effects implemented,
+and how to render the effect information in the UI. This means that adding an effect only needs to be done on the
+native side. The JNI bridge passes information regarding implemented effects descriptions to the UI as well as functions
+called when the user modifies effects in the UI.
+
+The `DuplexEngine` is responsible for managing and syncing the input and output Oboe streams for rendering audio
+with as low latency as possible. The `FunctionList` class contains the a vector of effects that correspond to the list of
+effects (and their parameters) that the user wants to use to process their audio. Effects (and the `FunctionList`) overload
+their function operator to take in two numeric iterator types. E.g `<template iter_type> void operator()
+(iter_type begin, iter_type end)`, where the `iter_types` correspond to C++ iterators carrying audio data. To erase the type
+of different objects, the `FunctionList` holds objects of types `std::function<void(iter_type, iter_type)>` i.e. functions
+which operate on the range between two numeric iterators in place. The `DuplexEngine`simply calls the `FunctionList` on every
+buffer of samples it receives.
+
+The effects folder contains the classes of various implemented effects. It also contains `Effects.h` where a global tuple of
+all the Effect descriptions implemented lives. The description folder contains the description for all of the effects.
+Each description takes the form of a class with static methods providing information regarding the effect (including name,
+category, parameters, and a factory method).
+
+## Adding Effects
+To add an effect, simply add a Description class similar to the existing classes, and add the class to the tuple in `Effects.h`. The description must provide a way to build the effect by either constructing another class corresponding
+to an effect, or pointing to a standalone function. Adding new effects is welcome!
+
+## Existing Effects
+A instructional implemented effect to examine is the `TremoloEffect.h` (a modulating gain).
+Many of the effects in the delay category
+inherit from `DelayLineEffect` which provides a framework to easily implement many delay based effects, as well as
+the comb filter effects (FIR, IIR, allpass). The slides have a block diagram displaying the mathematical basis of the effect.
+The nonlinear effects (distortion and overdrive) are implemented using a standalone function (from `SingleEffectFunctions.h`.
+The gain effect is implemented by a simple lambda in its description class.
diff --git a/apps/fxlab/docs/Presentation.pdf b/apps/fxlab/docs/Presentation.pdf
new file mode 100644
index 0000000..f12d53d
--- /dev/null
+++ b/apps/fxlab/docs/Presentation.pdf
Binary files differ
diff --git a/apps/fxlab/docs/README.md b/apps/fxlab/docs/README.md
new file mode 100644
index 0000000..b07117b
--- /dev/null
+++ b/apps/fxlab/docs/README.md
@@ -0,0 +1,4 @@
+# Docs for Android FX Lab
+
+* [How to Build the App](Dev-Guide.md)
+* [Slides for Internal Architecture (PDF)](Presentation.pdf)
diff --git a/apps/fxlab/gradle.properties b/apps/fxlab/gradle.properties
new file mode 100644
index 0000000..5b3f78e
--- /dev/null
+++ b/apps/fxlab/gradle.properties
@@ -0,0 +1,37 @@
+#
+# Copyright 2019 Google LLC
+#
+# 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
+#
+# https://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.
+#
+
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx1536m
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app's APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+# Automatically convert third-party libraries to use AndroidX
+android.enableJetifier=true
+# Kotlin code style for this project: "official" or "obsolete":
+kotlin.code.style=official
diff --git a/apps/fxlab/gradle/wrapper/gradle-wrapper.jar b/apps/fxlab/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..f6b961f
--- /dev/null
+++ b/apps/fxlab/gradle/wrapper/gradle-wrapper.jar
Binary files differ
diff --git a/apps/fxlab/gradle/wrapper/gradle-wrapper.properties b/apps/fxlab/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..84fc8bc
--- /dev/null
+++ b/apps/fxlab/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Tue Jun 25 14:12:01 PDT 2019
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip
diff --git a/apps/fxlab/gradlew b/apps/fxlab/gradlew
new file mode 100755
index 0000000..cccdd3d
--- /dev/null
+++ b/apps/fxlab/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+## Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+ ls=`ls -ld "$PRG"`
+ link=`expr "$ls" : '.*-> \(.*\)$'`
+ if expr "$link" : '/.*' > /dev/null; then
+ PRG="$link"
+ else
+ PRG=`dirname "$PRG"`"/$link"
+ fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+ echo "$*"
+}
+
+die () {
+ echo
+ echo "$*"
+ echo
+ exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+ CYGWIN* )
+ cygwin=true
+ ;;
+ Darwin* )
+ darwin=true
+ ;;
+ MINGW* )
+ msys=true
+ ;;
+ NONSTOP* )
+ nonstop=true
+ ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+ if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+ # IBM's JDK on AIX uses strange locations for the executables
+ JAVACMD="$JAVA_HOME/jre/sh/java"
+ else
+ JAVACMD="$JAVA_HOME/bin/java"
+ fi
+ if [ ! -x "$JAVACMD" ] ; then
+ die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+ fi
+else
+ JAVACMD="java"
+ which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+ MAX_FD_LIMIT=`ulimit -H -n`
+ if [ $? -eq 0 ] ; then
+ if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+ MAX_FD="$MAX_FD_LIMIT"
+ fi
+ ulimit -n $MAX_FD
+ if [ $? -ne 0 ] ; then
+ warn "Could not set maximum file descriptor limit: $MAX_FD"
+ fi
+ else
+ warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+ fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+ GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+ APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+ CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+ JAVACMD=`cygpath --unix "$JAVACMD"`
+
+ # We build the pattern for arguments to be converted via cygpath
+ ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+ SEP=""
+ for dir in $ROOTDIRSRAW ; do
+ ROOTDIRS="$ROOTDIRS$SEP$dir"
+ SEP="|"
+ done
+ OURCYGPATTERN="(^($ROOTDIRS))"
+ # Add a user-defined pattern to the cygpath arguments
+ if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+ OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+ fi
+ # Now convert the arguments - kludge to limit ourselves to /bin/sh
+ i=0
+ for arg in "$@" ; do
+ CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+ CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
+
+ if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
+ eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+ else
+ eval `echo args$i`="\"$arg\""
+ fi
+ i=$((i+1))
+ done
+ case $i in
+ (0) set -- ;;
+ (1) set -- "$args0" ;;
+ (2) set -- "$args0" "$args1" ;;
+ (3) set -- "$args0" "$args1" "$args2" ;;
+ (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+ (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+ (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+ (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+ (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+ (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+ esac
+fi
+
+# Escape application args
+save () {
+ for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+ echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+ cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/apps/fxlab/gradlew.bat b/apps/fxlab/gradlew.bat
new file mode 100644
index 0000000..e95643d
--- /dev/null
+++ b/apps/fxlab/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/apps/fxlab/screenshot.png b/apps/fxlab/screenshot.png
new file mode 100644
index 0000000..eb0a410
--- /dev/null
+++ b/apps/fxlab/screenshot.png
Binary files differ
diff --git a/apps/fxlab/settings.gradle b/apps/fxlab/settings.gradle
new file mode 100644
index 0000000..af27b53
--- /dev/null
+++ b/apps/fxlab/settings.gradle
@@ -0,0 +1,17 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ * https://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.
+ */
+
+include ':app'
diff --git a/src/common/LatencyTuner.cpp b/src/common/LatencyTuner.cpp
index 04476a1..cce8e18 100644
--- a/src/common/LatencyTuner.cpp
+++ b/src/common/LatencyTuner.cpp
@@ -94,7 +94,7 @@
mState = State::Idle;
mIdleCountDown = kIdleCount;
// Set to minimal latency
- mStream.setBufferSizeInFrames(mStream.getFramesPerBurst());
+ mStream.setBufferSizeInFrames(2 * mStream.getFramesPerBurst());
}
bool LatencyTuner::isAtMaximumBufferSize() {
