commit a05807667f3c93bc74755c911aebbdc9514609c1 Author: rnentjes Date: Thu Dec 22 16:27:24 2022 +0100 Initial commit diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..a12ae71 --- /dev/null +++ b/.gitignore @@ -0,0 +1,4 @@ +.gradle +.idea +build +kotlin-js-store diff --git a/build.gradle.kts b/build.gradle.kts new file mode 100644 index 0000000..bb09ff8 --- /dev/null +++ b/build.gradle.kts @@ -0,0 +1,76 @@ +import org.jetbrains.kotlin.gradle.targets.js.webpack.KotlinWebpackOutput.Target.VAR +import org.jetbrains.kotlin.gradle.plugin.KotlinJsCompilerType.LEGACY +import org.jetbrains.kotlin.gradle.plugin.KotlinJsCompilerType.IR + +plugins { + kotlin("multiplatform") version "1.7.20" + application +} + +group = "nl.astraeus" +version = "1.0-SNAPSHOT" + +repositories { + mavenCentral() + maven("https://maven.pkg.jetbrains.space/public/p/kotlinx-html/maven") +} + +val jsMode = IR + +kotlin { + jvm { + compilations.all { + kotlinOptions.jvmTarget = "1.8" + } + withJava() + testRuns["test"].executionTask.configure { + useJUnitPlatform() + } + } + js(jsMode) { + binaries.executable() + browser() + } + js("jsAudioWorklet", jsMode) { + binaries.executable() + + browser { + commonWebpackConfig { + outputFileName = "audio-worklet.js" + } + + webpackTask { + output.libraryTarget = VAR + // set library name, so we can call kotlin generated code from javascript + output.library = "audioWorklet" + } + } + } + sourceSets { + val commonMain by getting + val jvmMain by getting { + dependencies { + implementation("io.ktor:ktor-server-netty:2.0.2") + implementation("io.ktor:ktor-server-html-builder-jvm:2.0.2") + implementation("org.jetbrains.kotlinx:kotlinx-html-jvm:0.7.2") + } + } + val jsMain by getting + val jsAudioWorkletMain by getting + } +} + +application { + mainClass.set("nl.astraeus.application.ServerKt") +} + +tasks.named("jvmProcessResources") { + val jsBrowserDistribution = tasks.named("jsBrowserDistribution") + from(jsBrowserDistribution) + from(tasks.named("jsAudioWorkletBrowserDistribution")) +} + +tasks.named("run") { + dependsOn(tasks.named("jvmJar")) + classpath(tasks.named("jvmJar")) +} diff --git a/gradle.properties b/gradle.properties new file mode 100644 index 0000000..9dcc3a7 --- /dev/null +++ b/gradle.properties @@ -0,0 +1,2 @@ +kotlin.code.style=official +kotlin.js.compiler=ir diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar new file mode 100644 index 0000000..41d9927 Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..aa991fc --- /dev/null +++ b/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,5 @@ +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.2-bin.zip +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists diff --git a/gradlew b/gradlew new file mode 100755 index 0000000..1b6c787 --- /dev/null +++ b/gradlew @@ -0,0 +1,234 @@ +#!/bin/sh + +# +# Copyright © 2015-2021 the original authors. +# +# 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. +# + +############################################################################## +# +# Gradle start up script for POSIX generated by Gradle. +# +# Important for running: +# +# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is +# noncompliant, but you have some other compliant shell such as ksh or +# bash, then to run this script, type that shell name before the whole +# command line, like: +# +# ksh Gradle +# +# Busybox and similar reduced shells will NOT work, because this script +# requires all of these POSIX shell features: +# * functions; +# * expansions «$var», «${var}», «${var:-default}», «${var+SET}», +# «${var#prefix}», «${var%suffix}», and «$( cmd )»; +# * compound commands having a testable exit status, especially «case»; +# * various built-in commands including «command», «set», and «ulimit». +# +# Important for patching: +# +# (2) This script targets any POSIX shell, so it avoids extensions provided +# by Bash, Ksh, etc; in particular arrays are avoided. +# +# The "traditional" practice of packing multiple parameters into a +# space-separated string is a well documented source of bugs and security +# problems, so this is (mostly) avoided, by progressively accumulating +# options in "$@", and eventually passing that to Java. +# +# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, +# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; +# see the in-line comments for details. +# +# There are tweaks for specific operating systems such as AIX, CygWin, +# Darwin, MinGW, and NonStop. +# +# (3) This script is generated from the Groovy template +# https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt +# within the Gradle project. +# +# You can find Gradle at https://github.com/gradle/gradle/. +# +############################################################################## + +# Attempt to set APP_HOME + +# Resolve links: $0 may be a link +app_path=$0 + +# Need this for daisy-chained symlinks. +while + APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path + [ -h "$app_path" ] +do + ls=$( ls -ld "$app_path" ) + link=${ls#*' -> '} + case $link in #( + /*) app_path=$link ;; #( + *) app_path=$APP_HOME$link ;; + esac +done + +APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit + +APP_NAME="Gradle" +APP_BASE_NAME=${0##*/} + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD=maximum + +warn () { + echo "$*" +} >&2 + +die () { + echo + echo "$*" + echo + exit 1 +} >&2 + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "$( uname )" in #( + CYGWIN* ) cygwin=true ;; #( + Darwin* ) darwin=true ;; #( + MSYS* | 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" && ! "$darwin" && ! "$nonstop" ; then + case $MAX_FD in #( + max*) + MAX_FD=$( ulimit -H -n ) || + warn "Could not query maximum file descriptor limit" + esac + case $MAX_FD in #( + '' | soft) :;; #( + *) + ulimit -n "$MAX_FD" || + warn "Could not set maximum file descriptor limit to $MAX_FD" + esac +fi + +# Collect all arguments for the java command, stacking in reverse order: +# * args from the command line +# * the main class name +# * -classpath +# * -D...appname settings +# * --module-path (only if needed) +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. + +# For Cygwin or MSYS, switch paths to Windows format before running java +if "$cygwin" || "$msys" ; then + APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) + CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) + + JAVACMD=$( cygpath --unix "$JAVACMD" ) + + # Now convert the arguments - kludge to limit ourselves to /bin/sh + for arg do + if + case $arg in #( + -*) false ;; # don't mess with options #( + /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath + [ -e "$t" ] ;; #( + *) false ;; + esac + then + arg=$( cygpath --path --ignore --mixed "$arg" ) + fi + # Roll the args list around exactly as many times as the number of + # args, so each arg winds up back in the position where it started, but + # possibly modified. + # + # NB: a `for` loop captures its iteration list before it begins, so + # changing the positional parameters here affects neither the number of + # iterations, nor the values presented in `arg`. + shift # remove old arg + set -- "$@" "$arg" # push replacement arg + done +fi + +# Collect all arguments for the java command; +# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of +# shell script including quotes and variable substitutions, so put them in +# double quotes to make sure that they get re-expanded; and +# * put everything else in single quotes, so that it's not re-expanded. + +set -- \ + "-Dorg.gradle.appname=$APP_BASE_NAME" \ + -classpath "$CLASSPATH" \ + org.gradle.wrapper.GradleWrapperMain \ + "$@" + +# Use "xargs" to parse quoted args. +# +# With -n1 it outputs one arg per line, with the quotes and backslashes removed. +# +# In Bash we could simply go: +# +# readarray ARGS < <( xargs -n1 <<<"$var" ) && +# set -- "${ARGS[@]}" "$@" +# +# but POSIX shell has neither arrays nor command substitution, so instead we +# post-process each arg (as a line of input to sed) to backslash-escape any +# character that might be a shell metacharacter, then use eval to reverse +# that process (while maintaining the separation between arguments), and wrap +# the whole thing up as a single "set" statement. +# +# This will of course break if any of these variables contains a newline or +# an unmatched quote. +# + +eval "set -- $( + printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | + xargs -n1 | + sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | + tr '\n' ' ' + )" '"$@"' + +exec "$JAVACMD" "$@" diff --git a/gradlew.bat b/gradlew.bat new file mode 100644 index 0000000..107acd3 --- /dev/null +++ b/gradlew.bat @@ -0,0 +1,89 @@ +@rem +@rem Copyright 2015 the original author or authors. +@rem +@rem Licensed under the Apache License, Version 2.0 (the "License"); +@rem you may not use this file except in compliance with the License. +@rem You may obtain a copy of the License at +@rem +@rem https://www.apache.org/licenses/LICENSE-2.0 +@rem +@rem Unless required by applicable law or agreed to in writing, software +@rem distributed under the License is distributed on an "AS IS" BASIS, +@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@rem See the License for the specific language governing permissions and +@rem limitations under the License. +@rem + +@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 Resolve any "." and ".." in APP_HOME to make it shorter. +for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi + +@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="-Xmx64m" "-Xms64m" + +@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 execute + +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 execute + +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 + +: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 %* + +:end +@rem End local scope for the variables with windows NT shell +if "%ERRORLEVEL%"=="0" goto mainEnd + +:fail +rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of +rem the _cmd.exe /c_ return code! +if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 +exit /b 1 + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/settings.gradle.kts b/settings.gradle.kts new file mode 100644 index 0000000..7bf439f --- /dev/null +++ b/settings.gradle.kts @@ -0,0 +1,3 @@ + +rootProject.name = "kotlin-audioworklet" + diff --git a/src/jsAudioWorkletMain/kotlin/nl/astraeus/processor/WorkletProcessor.kt b/src/jsAudioWorkletMain/kotlin/nl/astraeus/processor/WorkletProcessor.kt new file mode 100644 index 0000000..85a3c7d --- /dev/null +++ b/src/jsAudioWorkletMain/kotlin/nl/astraeus/processor/WorkletProcessor.kt @@ -0,0 +1,46 @@ +@file:OptIn(ExperimentalJsExport::class) + +package nl.astraeus.processor + +import org.khronos.webgl.Float64Array +import org.w3c.dom.MessageEvent +import org.w3c.dom.MessagePort + +@ExperimentalJsExport +@JsExport +object WorkletProcessor { + var port: MessagePort? = null + + @JsName("setPort") + fun setPort(port: MessagePort) { + this.port = port + this.port?.onmessage = ::onMessage + } + + @JsName("onMessage") + fun onMessage(message: MessageEvent) { + console.log("WorkletProcessor: Received message", message) + + when (message.data) { + "start" -> { + println("Start worklet!") + } + "stop" -> { + + } + else -> + console.error("Don't kow how to handle message", message) + } + } + + @JsName("process") + fun process(samples: Int, left: Float64Array, right: Float64Array) { + //console.log("WorkletProcessor.process", samples) +// val buffer = Float64SampleBuffer(samples, left, right) +// +// audioGenerator?.also { generator -> +// generator.fillBuffer(buffer, 0, samples, false) +// } + } + +} diff --git a/src/jsAudioWorkletMain/resources/worklet-processor.js b/src/jsAudioWorkletMain/resources/worklet-processor.js new file mode 100644 index 0000000..2acbe2d --- /dev/null +++ b/src/jsAudioWorkletMain/resources/worklet-processor.js @@ -0,0 +1,54 @@ +; // make sure kotlin js code last statement is ended + +class WorkletProcessor extends AudioWorkletProcessor { + + // Static getter to define AudioParam objects in this custom processor. + static get parameterDescriptors() { + return [{ + name: 'volume', + defaultValue: 0.75 + }]; + } + + constructor() { + super(); + + console.log("worklet-processor.constructor", this, audioWorklet); + + audioWorklet.nl.astraeus.processor.WorkletProcessor.setPort(this.port); + + console.log("STARTED worklet-processor.js"); + } + + process(inputs, outputs, parameters) { + let result = true; + let samplesToProcess = 0; + + if (outputs.length !== 1) { + result = false; + console.log("Unexpected number of outputs!", outputs) + } else { + let channels = outputs[0].length; + + if (channels !== 2) { + result = false; + console.log("Unexpected number of channels!", outputs[0]); + } else if (outputs[0][0].length !== outputs[0][1].length) { + result = false; + console.log("Channels have different lengths!!", outputs[0]); + } else { + samplesToProcess = outputs[0][0].length; + + audioWorklet.nl.astraeus.processor.WorkletProcessor.process( + samplesToProcess, + outputs[0][0], + outputs[0][1] + ); + } + } + + return result; + } +} + +registerProcessor('worklet-processor', WorkletProcessor); diff --git a/src/jsMain/kotlin/nl/astraeus/Main.kt b/src/jsMain/kotlin/nl/astraeus/Main.kt new file mode 100644 index 0000000..f9741eb --- /dev/null +++ b/src/jsMain/kotlin/nl/astraeus/Main.kt @@ -0,0 +1,21 @@ +package nl.astraeus + +import kotlinx.browser.document +import nl.astraeus.handler.AudioWorkletHandler + +fun main() { + AudioWorkletHandler.loadCode() + + println("Ok") + + document.getElementById("clicker")?.also { + it.addEventListener("click", { + AudioWorkletHandler.createContext { + println("Created context") + + AudioWorkletHandler.start() + } + }, "") + } + +} diff --git a/src/jsMain/kotlin/nl/astraeus/handler/AudioWorkletHandler.kt b/src/jsMain/kotlin/nl/astraeus/handler/AudioWorkletHandler.kt new file mode 100644 index 0000000..af5c0f5 --- /dev/null +++ b/src/jsMain/kotlin/nl/astraeus/handler/AudioWorkletHandler.kt @@ -0,0 +1,162 @@ +package nl.astraeus.handler + +import kotlinx.browser.window +import org.w3c.dom.MessageEvent +import org.w3c.dom.MessagePort +import org.w3c.dom.url.URL +import org.w3c.files.Blob +import org.w3c.files.FilePropertyBag + +enum class WorkletState { + INIT, + LOADING, + LOADED, + READY +} + +abstract class AudioWorklet( + val jsCodeFile: String, + val kotlinCodeFile: String +) { + var audioContext: dynamic = null + var state = WorkletState.INIT + var processingCode: Blob? = null + var sampleRate: Int = 44100 + var audioWorkletMessagePort: MessagePort? = null + + abstract fun createNode(audioContext: dynamic): dynamic + + abstract fun onAudioWorkletMessage(message: MessageEvent) + + abstract fun onCodeLoaded() + + fun loadCode() { + // hack + // concat kotlin js and note-processor.js because + // audio worklet es6 is not supported in kotlin yet + state = WorkletState.LOADING + + window.fetch(jsCodeFile).then { daResponse -> + if (daResponse.ok) { + daResponse.text().then { daText -> + window.fetch(kotlinCodeFile).then { npResponse -> + if (npResponse.ok) { + npResponse.text().then { npText -> + processingCode = Blob( + arrayOf(daText, npText), + FilePropertyBag(type = "application/javascript") + ) + + state = WorkletState.LOADED + + println("Loaded $this code") + + onCodeLoaded() + } + } + } + } + } + } + } + + fun createContext(callback: () -> Unit) { + js("window.AudioContext = window.AudioContext || window.webkitAudioContext") + + audioContext = js("new window.AudioContext()") + sampleRate = audioContext.sampleRate as Int + + check(state == WorkletState.LOADED) { + "Can not createContext when code is not yet loaded, call loadCode first" + } + + val module = audioContext.audioWorklet.addModule( + URL.createObjectURL(processingCode!!) + ) + + module.then { + val node: dynamic = createNode(audioContext) + + node.connect(audioContext.destination) + + node.port.onmessage = ::onAudioWorkletMessage + + audioWorkletMessagePort = node.port as? MessagePort + + state = WorkletState.READY + + //postBatchedRequests() + + callback() + + "dynamic" + } + } + + fun isResumed(): Boolean = audioContext?.state == "running" + + fun resume() { + check(state == WorkletState.READY) { + "Unable to resume, state is not READY [$state]" + } + + audioContext?.resume() + } + +/* fun postRequest(request: WorkerRequest) { + batchedRequests.add(request) + + postBatchedRequests() + } + + private fun postBatchedRequests() { + val port = audioWorkletMessagePort + + if (port != null) { + for (request in batchedRequests) { + val message = when (serializer) { + is StringFormat -> { + serializer.encodeToString(WorkerRequest.serializer(), request) + } + + is BinaryFormat -> { + serializer.encodeToByteArray(WorkerRequest.serializer(), request) + } + + else -> { + error("Unknown serializer format ${serializer::class.simpleName}") + } + } + + port.postMessage(message) + } + + batchedRequests.clear() + } + }*/ +} + +object AudioWorkletHandler : AudioWorklet( + "static/worklet-processor.js", + "static/audio-worklet.js" +) { + + override fun createNode(audioContext: dynamic): dynamic = js( + // worklet-processor as defined in de javascript: + // registerProcessor('worklet-processor', WorkletProcessor); + "new AudioWorkletNode(audioContext, 'worklet-processor', { numberOfInputs: 0, outputChannelCount: [2] })" + ) + + override fun onAudioWorkletMessage(message: MessageEvent) { + console.log("Received message from audio worklet: ", message) + } + + override fun onCodeLoaded() { + println("Audio worklet code is loaded.") + } + + fun start() { + audioWorkletMessagePort?.postMessage("start") + } + +} diff --git a/src/jsMain/resources/worklet.css b/src/jsMain/resources/worklet.css new file mode 100644 index 0000000..16762ee --- /dev/null +++ b/src/jsMain/resources/worklet.css @@ -0,0 +1,4 @@ +.button { + padding: 3px 5px; + background-color: red; +} \ No newline at end of file diff --git a/src/jvmMain/kotlin/nl.astraeus.application/Server.kt b/src/jvmMain/kotlin/nl.astraeus.application/Server.kt new file mode 100644 index 0000000..af5d69d --- /dev/null +++ b/src/jvmMain/kotlin/nl.astraeus.application/Server.kt @@ -0,0 +1,44 @@ +package nl.astraeus.application + +import io.ktor.http.HttpStatusCode +import io.ktor.server.application.* +import io.ktor.server.engine.embeddedServer +import io.ktor.server.html.* +import io.ktor.server.http.content.* +import io.ktor.server.netty.Netty +import io.ktor.server.routing.* +import kotlinx.html.* + +fun HTML.index() { + head { + title("Hello from Ktor!") + link("static/worklet.css", "stylesheet" ,"text/css") + } + body { + div { + +"Hello from Ktor" + } + div { + id = "root" + } + span("button") { + id = "clicker" + + + "Start" + } + script(src = "/static/kotlin-audioworklet.js") {} + } +} + +fun main() { + embeddedServer(Netty, port = 8080, host = "127.0.0.1") { + routing { + get("/") { + call.respondHtml(HttpStatusCode.OK, HTML::index) + } + static("/static") { + resources() + } + } + }.start(wait = true) +}