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*.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

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# 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/).

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Apache License
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# 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
![Screenshot (dark mode)](screenshot.png)
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!
By default the sound output is off when you start the app (this is to avoid a feedback loop if you're not using headphones). Tap the "Unmute" button in the top right corner to enable sound output.
## 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.

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/build

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# 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})
target_link_options(native-lib PRIVATE "-Wl,-z,max-page-size=16384")

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/*
* 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-kapt'
android {
compileSdkVersion 35
defaultConfig {
applicationId "com.mobileer.androidfxlab"
minSdkVersion 21
targetSdkVersion 35
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
compileOptions {
sourceCompatibility = JavaVersion.VERSION_18
targetCompatibility = JavaVersion.VERSION_18
}
kotlinOptions {
jvmTarget = "18"
}
externalNativeBuild {
cmake {
path "./CMakeLists.txt"
}
}
dataBinding {
enabled = true
}
namespace 'com.mobileer.androidfxlab'
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation 'androidx.appcompat:appcompat:1.7.0'
implementation 'androidx.core:core-ktx:1.15.0'
implementation 'androidx.constraintlayout:constraintlayout:2.2.1'
implementation 'androidx.recyclerview:recyclerview:1.4.0'
implementation 'com.google.android.material:material:1.12.0'
testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test:runner:1.6.2'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.6.1'
}

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# 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

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<?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">
<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"
android:exported="true"
android:configChanges="orientation|screenSize|keyboardHidden">
<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>

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/*
* 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 *outputStream, void *audioData, int32_t numFrames) override {
auto *outputData = static_cast<numeric_type *>(audioData);
auto outputChannelCount = outputStream->getChannelCount();
// Silence first to simplify glitch detection
std::fill(outputData, outputData + numFrames * outputChannelCount, 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 < outputChannelCount; 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
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

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/*
* 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;
}

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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#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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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__

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/*
* 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 <cassert>
#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 &paramArr = 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

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CMakeFiles/
CMakeCache.txt
cmake_install.cmake
Makefile
runTests

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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)

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/*
* 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

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/*
* 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

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/*
* 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

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/*
* 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();
}

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/*
* 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.datatype.Effect
import java.util.*
import kotlin.concurrent.timerTask
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].enable
checkBoxView.setOnCheckedChangeListener { _, checked ->
effectList[index].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 SeekBars based on effect
for (ind in effect.effectDescription.paramValues.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 =
((effectList[index].paramValues[counter] - param.minValue) * 100 / (param.maxValue
- param.minValue)).toInt()
curLabelView.text = floatFormat.format(effectList[index].paramValues[counter])
// Bind param listeners to effects
seekBar.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener {
val paramInd = counter
var timer : Timer? = null
override fun onStartTrackingTouch(p0: SeekBar?) {}
override fun onStopTrackingTouch(seekbar: SeekBar?) {}
override fun onProgressChanged(
seekBar: SeekBar?, progress: Int, fromUser: Boolean
) {
val fracprogress =
((seekBar!!.progress / 100f) * (param.maxValue - param.minValue) + param.minValue)
curLabelView.text = floatFormat.format(fracprogress)
timer?.cancel()
timer = Timer()
timer?.schedule(timerTask { updateEffectParam(fracprogress) }, 100)
}
fun updateEffectParam(fracprogress : Float){
effectList[index].paramValues[paramInd] = fracprogress
NativeInterface.updateParamsAt(effect, index)
}
})
}
}
}
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)
}
})
}

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/*
* 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.Context
import android.content.pm.PackageManager
import android.media.midi.MidiDeviceInfo
import android.media.midi.MidiManager
import android.media.midi.MidiReceiver
import android.os.Build
import android.os.Bundle
import android.os.Handler
import android.util.Log
import android.view.Menu
import android.view.MenuItem
import android.view.SubMenu
import android.view.WindowManager
import android.widget.PopupMenu
import android.widget.SeekBar
import androidx.annotation.RequiresApi
import androidx.appcompat.app.AlertDialog
import androidx.appcompat.app.AppCompatActivity
import androidx.core.app.ActivityCompat
import androidx.core.content.ContextCompat
import androidx.databinding.DataBindingUtil
import com.mobileer.androidfxlab.databinding.ActivityMainBinding
import com.mobileer.androidfxlab.datatype.Effect
class MainActivity : AppCompatActivity() {
private var TAG: String = this.toString()
lateinit var binding: ActivityMainBinding
private var isAudioEnabled: Boolean = false
val MY_PERMISSIONS_RECORD_AUDIO = 17
@RequiresApi(Build.VERSION_CODES.M)
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
binding = DataBindingUtil.setContentView(this, R.layout.activity_main)
setSupportActionBar(binding.toolbar)
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
)
}
binding.effectListView.adapter = EffectsAdapter
binding.floatingAddButton.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()
}
if (Build.VERSION.SDK_INT > Build.VERSION_CODES.M) {
handleMidiDevices()
}
}
override fun onDestroy() {
// Clear the FX UI
EffectsAdapter.effectList.clear()
EffectsAdapter.notifyDataSetChanged()
super.onDestroy()
}
override fun onPause() {
// Shutdown Engine
NativeInterface.destroyAudioEngine()
super.onPause()
}
override fun onResume() {
super.onResume()
// Startup Engine
if (ContextCompat.checkSelfPermission(this, Manifest.permission.RECORD_AUDIO)
== PackageManager.PERMISSION_GRANTED
) {
NativeInterface.createAudioEngine()
NativeInterface.enable(isAudioEnabled)
}
}
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
}
}
}
@RequiresApi(Build.VERSION_CODES.M)
private fun handleMidiDevices() {
val midiManager = getSystemService(Context.MIDI_SERVICE) as MidiManager
midiManager.registerDeviceCallback(object : MidiManager.DeviceCallback() {
override fun onDeviceAdded(device: MidiDeviceInfo) {
// open this device
midiManager.openDevice(device, {
Log.d(TAG, "Opened MIDI device")
val targetSeekBar = findViewById<SeekBar>(R.id.seekBar)
if (targetSeekBar != null) {
val midiReceiver = MyMidiReceiver(targetSeekBar)
val outputPort = it.openOutputPort(0)
outputPort?.connect(midiReceiver)
}
}, Handler())
}
}, Handler())
}
override fun onCreateOptionsMenu(menu: Menu): Boolean {
getMenuInflater().inflate(R.menu.toolbar_menu, menu)
return true
}
override fun onOptionsItemSelected(item: MenuItem) = when (item.itemId) {
R.id.action_toggle_mute -> {
isAudioEnabled = !isAudioEnabled
NativeInterface.enable(isAudioEnabled)
if (isAudioEnabled) {
item.setIcon(R.drawable.ic_baseline_audio_is_enabled_24)
} else {
item.setIcon(R.drawable.ic_baseline_audio_is_disabled_24)
}
true
}
else -> {
super.onOptionsItemSelected(item)
}
}
@RequiresApi(Build.VERSION_CODES.M)
class MyMidiReceiver(var seekBar: SeekBar) : MidiReceiver() {
private val TAG: String = "MyMidiReceiver"
override fun onSend(data: ByteArray?, offset: Int, count: Int, timestamp: Long) {
Log.d(TAG, "Got midi message, offset " + offset + " count " + count)
Log.d(TAG, "Byte 0 " + Integer.toHexString(data!![offset].toInt()))
Log.d(TAG, "Byte 1 " + Integer.toHexString(data[offset+1].toInt()))
Log.d(TAG, "Byte 2 " + data[offset+2].toInt())
val CONTROL_CHANGE_CH1 : Byte = 0xB0.toByte()
if (data[offset] == CONTROL_CHANGE_CH1){
seekBar.progress = (data[offset+2].toInt() / 1.27).toInt()
}
}
}
}

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@ -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.paramValues[0]
)
)
modifyEffectNative(
convertEffectToId(
effect
), index, effect.paramValues
)
}
// 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: $enable")
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
}

28
externals/oboe/apps/fxlab/app/src/main/kotlin/com/mobileer/androidfxlab/datatype/Effect.kt vendored Normal file
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@ -0,0 +1,28 @@
/*
* 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
/**
* Class which represents an audio effect
*/
data class Effect(val effectDescription: EffectDescription) {
val name = effectDescription.name
val paramValues = FloatArray(effectDescription.paramValues.size) {
i -> effectDescription.paramValues[i].defaultValue
}
var enable: Boolean = true
}

33
externals/oboe/apps/fxlab/app/src/main/kotlin/com/mobileer/androidfxlab/datatype/EffectDescription.kt vendored Normal file
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@ -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 paramValues: 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
}

23
externals/oboe/apps/fxlab/app/src/main/kotlin/com/mobileer/androidfxlab/datatype/ParamDescription.kt vendored Normal file
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@ -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)

50
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@ -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>

25
externals/oboe/apps/fxlab/app/src/main/res/drawable/ic_add.xml vendored Normal file
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@ -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>

10
externals/oboe/apps/fxlab/app/src/main/res/drawable/ic_baseline_audio_is_disabled_24.xml vendored Normal file
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@ -0,0 +1,10 @@
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="24dp"
android:height="24dp"
android:viewportWidth="24.0"
android:viewportHeight="24.0"
android:tint="?attr/colorControlNormal">
<path
android:fillColor="@android:color/white"
android:pathData="M16.5,12c0,-1.77 -1.02,-3.29 -2.5,-4.03v2.21l2.45,2.45c0.03,-0.2 0.05,-0.41 0.05,-0.63zM19,12c0,0.94 -0.2,1.82 -0.54,2.64l1.51,1.51C20.63,14.91 21,13.5 21,12c0,-4.28 -2.99,-7.86 -7,-8.77v2.06c2.89,0.86 5,3.54 5,6.71zM4.27,3L3,4.27 7.73,9L3,9v6h4l5,5v-6.73l4.25,4.25c-0.67,0.52 -1.42,0.93 -2.25,1.18v2.06c1.38,-0.31 2.63,-0.95 3.69,-1.81L19.73,21 21,19.73l-9,-9L4.27,3zM12,4L9.91,6.09 12,8.18L12,4z"/>
</vector>

10
externals/oboe/apps/fxlab/app/src/main/res/drawable/ic_baseline_audio_is_enabled_24.xml vendored Normal file
View file

@ -0,0 +1,10 @@
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="24dp"
android:height="24dp"
android:viewportWidth="24.0"
android:viewportHeight="24.0"
android:tint="?attr/colorControlNormal">
<path
android:fillColor="@android:color/white"
android:pathData="M3,9v6h4l5,5L12,4L7,9L3,9zM16.5,12c0,-1.77 -1.02,-3.29 -2.5,-4.03v8.05c1.48,-0.73 2.5,-2.25 2.5,-4.02zM14,3.23v2.06c2.89,0.86 5,3.54 5,6.71s-2.11,5.85 -5,6.71v2.06c4.01,-0.91 7,-4.49 7,-8.77s-2.99,-7.86 -7,-8.77z"/>
</vector>

25
externals/oboe/apps/fxlab/app/src/main/res/drawable/ic_baseline_drag_indicator.xml vendored Normal file
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@ -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>

90
externals/oboe/apps/fxlab/app/src/main/res/drawable/ic_launcher_background.xml vendored Normal file
View file

@ -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>

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@ -0,0 +1,63 @@
<?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.
-->
<layout>
<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">
<com.google.android.material.appbar.AppBarLayout
android:id="@+id/appBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/ThemeOverlay.AppCompat.ActionBar">
<androidx.appcompat.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary"
android:minHeight="?attr/actionBarSize"
app:theme="@style/ThemeOverlay.MaterialComponents.Dark.ActionBar"
app:popupTheme="@style/ThemeOverlay.MaterialComponents.Light"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</com.google.android.material.appbar.AppBarLayout>
<!-- Main content -->
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/effect_list_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="vertical"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager" />
<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>
</layout>

65
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<?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>

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externals/oboe/apps/fxlab/app/src/main/res/layout/effect_view.xml vendored Normal file
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<?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>

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<?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>

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externals/oboe/apps/fxlab/app/src/main/res/menu/add_menu.xml vendored Normal file
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@ -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>

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externals/oboe/apps/fxlab/app/src/main/res/menu/toolbar_menu.xml vendored Normal file
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@ -0,0 +1,12 @@
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<!-- Add a mute toggle action to our Toolbar-->
<item
android:id="@+id/action_toggle_mute"
android:icon="@drawable/ic_baseline_audio_is_disabled_24"
android:title="@string/action_toggle_mute"
app:showAsAction="ifRoom"
/>
</menu>

21
externals/oboe/apps/fxlab/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml vendored Normal file
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@ -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>

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@ -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>

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externals/oboe/apps/fxlab/app/src/main/res/values/colors.xml vendored Normal file
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<?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>

20
externals/oboe/apps/fxlab/app/src/main/res/values/strings.xml vendored Normal file
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@ -0,0 +1,20 @@
<!--
~ 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>
<string name="action_toggle_mute">Toggle volume</string>
</resources>

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externals/oboe/apps/fxlab/app/src/main/res/values/styles.xml vendored Normal file
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<!--
~ 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>

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/*
* 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 = '2.1.10'
}
repositories {
google()
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:8.9.0'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
classpath "org.jetbrains.kotlin:compose-compiler-gradle-plugin:$kotlin_version"
}
}
allprojects {
repositories {
google()
mavenCentral()
}
}
tasks.register('clean', Delete) {
delete rootProject.layout.buildDirectory
}

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# 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.

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# Docs for Android FX Lab
* [How to Build the App](Dev-Guide.md)
* [Slides for Internal Architecture (PDF)](Presentation.pdf)

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#
# 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
android.defaults.buildfeatures.buildconfig=true
android.nonTransitiveRClass=false
android.nonFinalResIds=false

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#Tue Mar 11 13:58:39 EDT 2025
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-8.11.1-bin.zip
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists

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externals/oboe/apps/fxlab/gradlew vendored Executable file
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#!/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" "$@"

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@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

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/*
* 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'