3cef1b4e85
A retro, grid-based music tracker for Android (Kotlin + Jetpack Compose, single Activity) with four equally-capable input methods (touch, keyboard, gamepad, MIDI) and four tabs: tracker, mixer, toolbox, settings. Highlights: - Tracker: Canvas-drawn 4-track pattern grid over an 8-lane arrangement roll, with a glyph cache and draw-phase state reads so the playhead and edits redraw without per-frame recomposition. - Audio: sample-accurate sequencer feeding a shared AudioEngine, driven by either a Kotlin AudioTrack loop or native Oboe/AAudio via JNI (16 KB-aligned native libs). media3 MediaSession for lock-screen/headset transport. - Toolbox: 16 instrument/effect slots with a 2-octave audition keyboard; single-tap select, double-tap edit, long-press clear. - Note entry: long-press cell popups (piano keyboard / value steppers) plus keyboard/gamepad stepping that resumes from the last note/channel entered. Velocity capped at 0x7F, channel at 16. - Selection/clipboard (cut/copy/paste/delete) and .sng import/export compatible with the reference desktop tool. - A `profile` build type (non-debuggable, debug-signed) for realistic on-device performance testing. - Developer handover documentation under docs/. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
122 lines
4.3 KiB
Kotlin
122 lines
4.3 KiB
Kotlin
// Build configuration for the single application module. This is where we turn
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// on Compose, set the min/target Android versions, and list dependencies.
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plugins {
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alias(libs.plugins.android.application)
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alias(libs.plugins.kotlin.android)
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alias(libs.plugins.kotlin.compose)
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}
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android {
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namespace = "com.reactorcoremeltdown.sizzletracker"
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compileSdk = 34
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// Native (Oboe) low-latency output backend; see src/main/cpp.
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// NDK r27+ builds native libs 16 KB-page-aligned by default and ships a
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// 16 KB-aligned libc++_shared.so (required for Android 15 / Google Play).
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ndkVersion = "27.2.12479018"
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defaultConfig {
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applicationId = "com.reactorcoremeltdown.sizzletracker"
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// minSdk 26 (Android 8.0) is the floor for the native MIDI API
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// (android.media.midi) and AAudio low-latency audio we rely on.
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minSdk = 26
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targetSdk = 34
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versionCode = 1
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versionName = "0.1.0"
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// We provide our own instrumentation runner if/when tests are added.
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testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
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externalNativeBuild {
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cmake { arguments += "-DANDROID_STL=c++_shared" }
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}
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}
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externalNativeBuild {
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cmake {
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path = file("src/main/cpp/CMakeLists.txt")
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version = "3.22.1"
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}
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}
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buildTypes {
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release {
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// Shrinking is off by default so newcomers get readable stack traces.
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// Flip to true once the app stabilises.
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isMinifyEnabled = false
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proguardFiles(
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getDefaultProguardFile("proguard-android-optimize.txt"),
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"proguard-rules.pro",
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)
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}
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// A realistic-performance variant for testing UI responsiveness on-device.
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// The `debug` build is `debuggable = true`, which makes ART run the app
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// un-optimised and makes Compose several times slower — so measuring UI
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// "snappiness" on a debug build is misleading. This variant flips
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// debuggability off (the single biggest perf lever) while reusing the debug
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// signing key, so it still installs without a release keystore. R8/shrinking
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// stays off to avoid needing JNI/Compose keep-rules for now.
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create("profile") {
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initWith(getByName("debug"))
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isDebuggable = false
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isJniDebuggable = false
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signingConfig = signingConfigs.getByName("debug")
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matchingFallbacks += "debug"
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}
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}
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compileOptions {
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sourceCompatibility = JavaVersion.VERSION_17
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targetCompatibility = JavaVersion.VERSION_17
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}
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kotlinOptions {
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jvmTarget = "17"
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}
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buildFeatures {
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compose = true
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prefab = true // exposes the Oboe AAR's native headers/lib to CMake
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}
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packaging {
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resources.excludes += "/META-INF/{AL2.0,LGPL2.1}"
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}
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}
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dependencies {
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implementation(libs.androidx.core.ktx)
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implementation(libs.androidx.lifecycle.runtime.ktx)
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implementation(libs.androidx.lifecycle.viewmodel.compose)
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implementation(libs.androidx.activity.compose)
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// Compose UI toolkit — the BOM keeps every Compose artifact on one version.
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implementation(platform(libs.androidx.compose.bom))
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implementation(libs.androidx.compose.ui)
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implementation(libs.androidx.compose.ui.graphics)
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implementation(libs.androidx.compose.ui.tooling.preview)
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implementation(libs.androidx.compose.foundation)
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implementation(libs.androidx.compose.material3)
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implementation(libs.androidx.compose.material.icons.extended)
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debugImplementation(libs.androidx.compose.ui.tooling)
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// Background playback + media-style notification transport controls.
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implementation(libs.androidx.media3.session)
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implementation(libs.androidx.media3.common)
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// Persistence for settings & themes.
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implementation(libs.androidx.datastore.preferences)
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// Coroutines for the audio/sequencer background work.
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implementation(libs.kotlinx.coroutines.android)
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// Oboe: low-latency native audio (AAudio) — the native output backend.
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// 1.9.3+ ships 16 KB-page-aligned .so files (required by Android 15 / Play).
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implementation("com.google.oboe:oboe:1.10.0")
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// JVM unit tests for the pure model/io logic (no device needed).
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testImplementation("junit:junit:4.13.2")
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}
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