initial commit
Anton Lydike
4 years ago
commit
234c26f377
@ -0,0 +1,138 @@
|
||||
|
||||
# Created by https://www.toptal.com/developers/gitignore/api/kotlin,intellij+all,gradle
|
||||
# Edit at https://www.toptal.com/developers/gitignore?templates=kotlin,intellij+all,gradle
|
||||
|
||||
### Intellij+all ###
|
||||
# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
|
||||
# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
|
||||
|
||||
# User-specific stuff
|
||||
.idea/**/workspace.xml
|
||||
.idea/**/tasks.xml
|
||||
.idea/**/usage.statistics.xml
|
||||
.idea/**/dictionaries
|
||||
.idea/**/shelf
|
||||
|
||||
# Generated files
|
||||
.idea/**/contentModel.xml
|
||||
|
||||
# Sensitive or high-churn files
|
||||
.idea/**/dataSources/
|
||||
.idea/**/dataSources.ids
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||||
.idea/**/dataSources.local.xml
|
||||
.idea/**/sqlDataSources.xml
|
||||
.idea/**/dynamic.xml
|
||||
.idea/**/uiDesigner.xml
|
||||
.idea/**/dbnavigator.xml
|
||||
|
||||
# Gradle
|
||||
.idea/**/gradle.xml
|
||||
.idea/**/libraries
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||||
|
||||
# Gradle and Maven with auto-import
|
||||
# When using Gradle or Maven with auto-import, you should exclude module files,
|
||||
# since they will be recreated, and may cause churn. Uncomment if using
|
||||
# auto-import.
|
||||
# .idea/artifacts
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||||
# .idea/compiler.xml
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||||
# .idea/jarRepositories.xml
|
||||
# .idea/modules.xml
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||||
# .idea/*.iml
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||||
# .idea/modules
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||||
# *.iml
|
||||
# *.ipr
|
||||
|
||||
# CMake
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||||
cmake-build-*/
|
||||
|
||||
# Mongo Explorer plugin
|
||||
.idea/**/mongoSettings.xml
|
||||
|
||||
# File-based project format
|
||||
*.iws
|
||||
|
||||
# IntelliJ
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||||
out/
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||||
|
||||
# mpeltonen/sbt-idea plugin
|
||||
.idea_modules/
|
||||
|
||||
# JIRA plugin
|
||||
atlassian-ide-plugin.xml
|
||||
|
||||
# Cursive Clojure plugin
|
||||
.idea/replstate.xml
|
||||
|
||||
# Crashlytics plugin (for Android Studio and IntelliJ)
|
||||
com_crashlytics_export_strings.xml
|
||||
crashlytics.properties
|
||||
crashlytics-build.properties
|
||||
fabric.properties
|
||||
|
||||
# Editor-based Rest Client
|
||||
.idea/httpRequests
|
||||
|
||||
# Android studio 3.1+ serialized cache file
|
||||
.idea/caches/build_file_checksums.ser
|
||||
|
||||
### Intellij+all Patch ###
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# Ignores the whole .idea folder and all .iml files
|
||||
# See https://github.com/joeblau/gitignore.io/issues/186 and https://github.com/joeblau/gitignore.io/issues/360
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|
||||
.idea/
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|
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# Reason: https://github.com/joeblau/gitignore.io/issues/186#issuecomment-249601023
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|
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*.iml
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modules.xml
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.idea/misc.xml
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||||
*.ipr
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|
||||
# Sonarlint plugin
|
||||
.idea/sonarlint
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||||
|
||||
### Kotlin ###
|
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# Compiled class file
|
||||
*.class
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||||
|
||||
# Log file
|
||||
*.log
|
||||
|
||||
# BlueJ files
|
||||
*.ctxt
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||||
|
||||
# Mobile Tools for Java (J2ME)
|
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.mtj.tmp/
|
||||
|
||||
# Package Files #
|
||||
*.jar
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||||
*.war
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||||
*.nar
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||||
*.ear
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*.zip
|
||||
*.tar.gz
|
||||
*.rar
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||||
|
||||
# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
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hs_err_pid*
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||||
|
||||
### Gradle ###
|
||||
.gradle
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build/
|
||||
|
||||
# Ignore Gradle GUI config
|
||||
gradle-app.setting
|
||||
|
||||
# Avoid ignoring Gradle wrapper jar file (.jar files are usually ignored)
|
||||
!gradle-wrapper.jar
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|
||||
# Cache of project
|
||||
.gradletasknamecache
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|
||||
# # Work around https://youtrack.jetbrains.com/issue/IDEA-116898
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||||
# gradle/wrapper/gradle-wrapper.properties
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|
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### Gradle Patch ###
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**/build/
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# End of https://www.toptal.com/developers/gitignore/api/kotlin,intellij+all,gradle
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@ -0,0 +1,3 @@
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# Music
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A fun project to learn kotlin and to make some god darn music
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@ -0,0 +1,40 @@
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/*
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* This file was generated by the Gradle 'init' task.
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*
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||||
* This generated file contains a sample Kotlin application project to get you started.
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*/
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||||
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plugins {
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// Apply the Kotlin JVM plugin to add support for Kotlin.
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id("org.jetbrains.kotlin.jvm") version "1.3.41"
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|
||||
// Apply the application plugin to add support for building a CLI application.
|
||||
application
|
||||
}
|
||||
|
||||
repositories {
|
||||
// Use jcenter for resolving dependencies.
|
||||
// You can declare any Maven/Ivy/file repository here.
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jcenter()
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mavenCentral()
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}
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dependencies {
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// Align versions of all Kotlin components
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implementation(platform("org.jetbrains.kotlin:kotlin-bom"))
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// Use the Kotlin JDK 8 standard library.
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implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8")
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|
||||
// Use the Kotlin test library.
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testImplementation("org.jetbrains.kotlin:kotlin-test")
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|
||||
// Use the Kotlin JUnit integration.
|
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testImplementation("org.jetbrains.kotlin:kotlin-test-junit")
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}
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application {
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// Define the main class for the application
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mainClassName = "music.MainKt"
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}
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Binary file not shown.
@ -0,0 +1,5 @@
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distributionBase=GRADLE_USER_HOME
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distributionPath=wrapper/dists
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distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.4-bin.zip
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zipStoreBase=GRADLE_USER_HOME
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zipStorePath=wrapper/dists
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@ -0,0 +1,188 @@
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#!/usr/bin/env sh
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||||
#
|
||||
# Copyright 2015 the original author or 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.
|
||||
#
|
||||
|
||||
##############################################################################
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||||
##
|
||||
## Gradle start up script for UN*X
|
||||
##
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||||
##############################################################################
|
||||
|
||||
# Attempt to set APP_HOME
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||||
# Resolve links: $0 may be a link
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||||
PRG="$0"
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||||
# Need this for relative symlinks.
|
||||
while [ -h "$PRG" ] ; do
|
||||
ls=`ls -ld "$PRG"`
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||||
link=`expr "$ls" : '.*-> \(.*\)$'`
|
||||
if expr "$link" : '/.*' > /dev/null; then
|
||||
PRG="$link"
|
||||
else
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||||
PRG=`dirname "$PRG"`"/$link"
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||||
fi
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||||
done
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SAVED="`pwd`"
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||||
cd "`dirname \"$PRG\"`/" >/dev/null
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APP_HOME="`pwd -P`"
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||||
cd "$SAVED" >/dev/null
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||||
|
||||
APP_NAME="Gradle"
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||||
APP_BASE_NAME=`basename "$0"`
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||||
|
||||
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
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||||
DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
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|
||||
# Use the maximum available, or set MAX_FD != -1 to use that value.
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||||
MAX_FD="maximum"
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||||
|
||||
warn () {
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||||
echo "$*"
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||||
}
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||||
|
||||
die () {
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||||
echo
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||||
echo "$*"
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||||
echo
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||||
exit 1
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||||
}
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||||
|
||||
# OS specific support (must be 'true' or 'false').
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cygwin=false
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msys=false
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darwin=false
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nonstop=false
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case "`uname`" in
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CYGWIN* )
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cygwin=true
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;;
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Darwin* )
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darwin=true
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;;
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MINGW* )
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msys=true
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;;
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NONSTOP* )
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nonstop=true
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;;
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esac
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CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
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||||
# Determine the Java command to use to start the JVM.
|
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if [ -n "$JAVA_HOME" ] ; then
|
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if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
|
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# IBM's JDK on AIX uses strange locations for the executables
|
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JAVACMD="$JAVA_HOME/jre/sh/java"
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else
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||||
JAVACMD="$JAVA_HOME/bin/java"
|
||||
fi
|
||||
if [ ! -x "$JAVACMD" ] ; then
|
||||
die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
|
||||
|
||||
Please set the JAVA_HOME variable in your environment to match the
|
||||
location of your Java installation."
|
||||
fi
|
||||
else
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||||
JAVACMD="java"
|
||||
which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
|
||||
|
||||
Please set the JAVA_HOME variable in your environment to match the
|
||||
location of your Java installation."
|
||||
fi
|
||||
|
||||
# Increase the maximum file descriptors if we can.
|
||||
if [ "$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 or MSYS, switch paths to Windows format before running java
|
||||
if [ "$cygwin" = "true" -o "$msys" = "true" ] ; 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" "$@"
|
||||
@ -0,0 +1,100 @@
|
||||
@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 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 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
|
||||
@ -0,0 +1,10 @@
|
||||
/*
|
||||
* This file was generated by the Gradle 'init' task.
|
||||
*
|
||||
* The settings file is used to specify which projects to include in your build.
|
||||
*
|
||||
* Detailed information about configuring a multi-project build in Gradle can be found
|
||||
* in the user manual at https://docs.gradle.org/5.6.4/userguide/multi_project_builds.html
|
||||
*/
|
||||
|
||||
rootProject.name = "music"
|
||||
@ -0,0 +1,38 @@
|
||||
package music.Filter
|
||||
|
||||
import music.Params.SAMPLES
|
||||
import music.Signal
|
||||
|
||||
typealias Filter = (Signal) -> (Signal)
|
||||
|
||||
object Filters {
|
||||
fun easeIn(signal: Signal): Signal {
|
||||
val len = kotlin.math.min(SAMPLES / 64, signal.size)
|
||||
val start = signal.slice(0 until len)
|
||||
val end = signal.slice(len until signal.size)
|
||||
|
||||
return (start.withIndex().map { i -> (i.value * (i.index / len.toFloat())).toInt() } + end).toTypedArray();
|
||||
}
|
||||
|
||||
fun easeOut(signal: Signal): Signal {
|
||||
val len = kotlin.math.min(SAMPLES / 64, signal.size)
|
||||
val sep = signal.size - len - 1;
|
||||
val start = signal.slice(0 until sep)
|
||||
val end = signal.slice(sep until signal.size)
|
||||
|
||||
return (start + end.withIndex().map { i -> (i.value * ((len - i.index) / len.toFloat())).toInt() }).toTypedArray();
|
||||
}
|
||||
|
||||
fun ease(signal: Signal): Signal {
|
||||
val len = kotlin.math.min(SAMPLES / 64, signal.size / 2)
|
||||
val sep = signal.size - len - 1;
|
||||
val start = signal.slice(0 until len)
|
||||
val mid = signal.slice(len until sep)
|
||||
val end = signal.slice(sep until signal.size)
|
||||
|
||||
return (start.withIndex().map { i -> (i.value * (i.index / len.toFloat())).toInt() }
|
||||
+ mid
|
||||
+ end.withIndex().map { i -> (i.value * ((len - i.index) / len.toFloat())).toInt() }
|
||||
).toTypedArray();
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,39 @@
|
||||
package music
|
||||
|
||||
import music.Filter.Filters
|
||||
import music.Params.SAMPLES
|
||||
import music.generators.Generator
|
||||
import music.generators.ToneGenerator
|
||||
import javax.sound.sampled.AudioFormat;
|
||||
import javax.sound.sampled.AudioSystem;
|
||||
import javax.sound.sampled.DataLine;
|
||||
import javax.sound.sampled.SourceDataLine;
|
||||
|
||||
object Params {
|
||||
val SAMPLES = 44100;
|
||||
val CORES = Runtime.getRuntime().availableProcessors()
|
||||
val PI = kotlin.math.PI.toFloat()
|
||||
}
|
||||
|
||||
|
||||
fun main(args: Array<String>) {
|
||||
|
||||
val format = AudioFormat(SAMPLES.toFloat(), 16, 1, true, false)
|
||||
val info = DataLine.Info( SourceDataLine::class.java, format)
|
||||
val line = AudioSystem.getLine(info) as SourceDataLine
|
||||
|
||||
line.open(format)
|
||||
line.start()
|
||||
|
||||
for (i in 0..12) {
|
||||
|
||||
val gen = ToneGenerator(.2f, i, WaveformTransformations::sine)
|
||||
|
||||
|
||||
|
||||
val signal = Filters.ease(gen.getWave(Samples(1)))
|
||||
|
||||
line.write(signal.toBytes(), 0, signal.size * 2)
|
||||
}
|
||||
|
||||
}
|
||||
@ -0,0 +1,33 @@
|
||||
package music
|
||||
|
||||
import music.Params.SAMPLES
|
||||
|
||||
typealias Samples = Array<Float>
|
||||
|
||||
fun Samples(len: Int, start: Int = 0): Samples =
|
||||
Samples(len * SAMPLES) { i -> start.toFloat() + (i / SAMPLES.toFloat())}
|
||||
|
||||
fun Samples.map(mapper: (Float) -> (Float)): Samples =
|
||||
Array(size) { mapper(this[it]) }
|
||||
|
||||
fun Samples.ceil(): Samples =
|
||||
map { kotlin.math.ceil(it) }
|
||||
|
||||
fun Samples.sin(): Samples =
|
||||
map { kotlin.math.sin(it) }
|
||||
|
||||
fun Samples.mod(num: Int): Samples =
|
||||
map { it % num }
|
||||
|
||||
operator fun Samples.times(scalar: Float): Samples =
|
||||
if (scalar == 1f) this else map { it * scalar }
|
||||
|
||||
operator fun Samples.plus(value: Float): Samples =
|
||||
map { it + value }
|
||||
|
||||
operator fun Samples.minus(value: Float): Samples =
|
||||
map { it - value }
|
||||
|
||||
operator fun Samples.div(value: Float): Samples =
|
||||
map { it / value }
|
||||
|
||||
@ -0,0 +1,31 @@
|
||||
package music
|
||||
|
||||
import music.Params.PI
|
||||
import kotlin.math.pow
|
||||
|
||||
|
||||
/**
|
||||
* A Signal is string of Integer values which describe a curve, they go from - MAX_VAL to MAX_VAL
|
||||
*/
|
||||
typealias Signal = Array<Int>
|
||||
|
||||
val MAX_VAL = 2f.pow(15) - 1
|
||||
|
||||
fun Signal.toBytes(): ByteArray =
|
||||
Array(size * 2) { i -> (this[i/2] shr ((i % 2) * 8)).toByte() }.toByteArray()
|
||||
|
||||
fun Signal(samples: Samples): Signal =
|
||||
Signal(samples.size) {i -> (samples[i] * MAX_VAL).toInt() }
|
||||
|
||||
object WaveformTransformations {
|
||||
fun sine(samples: Samples, volume: Float): Signal
|
||||
= Signal(((samples * (2f * PI)).sin()) * volume)
|
||||
|
||||
fun square(samples: Samples, volume: Float): Signal
|
||||
= Signal((((samples * (2f * PI)).sin() / 1f).ceil() * 2f + 1f) * volume)
|
||||
|
||||
fun sawtooth(samples: Samples, volume: Float): Signal
|
||||
= Signal(((samples + 1f).mod(2) - 1f) * volume)
|
||||
}
|
||||
|
||||
typealias WaveformTransformation = (Samples, Float) -> (Signal)
|
||||
@ -0,0 +1,5 @@
|
||||
package music
|
||||
|
||||
class Track {
|
||||
|
||||
}
|
||||
@ -0,0 +1,5 @@
|
||||
package music.channel
|
||||
|
||||
class Channel {
|
||||
|
||||
}
|
||||
@ -0,0 +1,15 @@
|
||||
package music.generators
|
||||
|
||||
import music.Samples
|
||||
import music.Signal
|
||||
import music.WaveformTransformation
|
||||
|
||||
abstract class Generator(val volume: Float, val waveform: WaveformTransformation) {
|
||||
|
||||
fun getWave(samples: Samples): Signal {
|
||||
return waveform(generate(samples), volume)
|
||||
}
|
||||
|
||||
abstract fun generate(samples: Samples): Samples
|
||||
}
|
||||
|
||||
@ -0,0 +1,22 @@
|
||||
package music.generators
|
||||
|
||||
import music.Samples
|
||||
import music.Signal
|
||||
import music.WaveformTransformation
|
||||
import music.times
|
||||
import kotlin.math.pow
|
||||
|
||||
open class ToneGenerator(volume: Float, private val tone: Int, waveform: WaveformTransformation) : Generator(volume, waveform) {
|
||||
override fun generate(samples: Samples): Samples =
|
||||
samples * getFreqOfTone(tone)
|
||||
|
||||
protected fun getFreqOfTone(tone: Float): Float =
|
||||
F0 * 2f.pow(tone / 12f)
|
||||
|
||||
protected fun getFreqOfTone(tone: Int): Float =
|
||||
F0 * 2f.pow(tone / 12f)
|
||||
|
||||
companion object {
|
||||
private const val F0: Float = 440f;
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,13 @@
|
||||
/*
|
||||
* This Kotlin source file was generated by the Gradle 'init' task.
|
||||
*/
|
||||
package music
|
||||
|
||||
import kotlin.test.Test
|
||||
import kotlin.test.assertNotNull
|
||||
|
||||
class AppTest {
|
||||
@Test fun testAppHasAGreeting() {
|
||||
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue