FastMediaSorter v2: Tech Stack

Version sources of truth:

• Build system and plugin versions: build.gradle.kts
• App dependency and variant definitions: app_v2/build.gradle.kts
• Wear dependency and packaging definitions: wear/build.gradle.kts
• Operational build commands and release flow: docs/DEV_OPS.md

There is no Gradle version catalog in this repo. Runtime dependency versions are declared inline in the module Gradle files.

The pins below are generated by scripts/quality/generate-toolchain-pins.ps1 - do not hand-edit:

• compileSdk: 35
• targetSdk: 35
• minSdk (standard): 26
• minSdk (legacy): 23
• Kotlin: 2.2.10
• Room: 2.7.0
• Media3 (ExoPlayer): 1.2.1
• Glide: 4.16.0

Build System

• Gradle wrapper: 9.4.1
• Android Gradle Plugin: 9.2.1
• Kotlin Gradle Plugin: 2.2.10
• Kotlin Compose plugin: 2.2.10
• KSP: 2.3.8
• Hilt Gradle plugin: 2.59
• Chaquopy: 17.0.0 (noLegal only)
• Java toolchain / bytecode target: 17
• Modules: :app_v2, :wear
• Repositories: Google Maven, Maven Central, Gradle Plugin Portal, Microsoft Duo public Maven feed, JitPack
• Checked-in dependency declarations in Gradle files: 140

Platform and Packaging

• Main app namespace / base applicationId: com.sza.fastmediasorter
• Wear namespace / applicationId: com.sza.fastmediasorter.wear
• app_v2 minSdk: 26 by default, 23 in legacy
• wear minSdk: 28
• compileSdk / targetSdk: 35 for both modules
• NDK: 27.2.12479018 (r27c) in app_v2
• coreLibraryDesugaring is enabled in app_v2 for API 23-25 support
• Annotation processing split: app_v2 uses kapt, wear uses ksp

Variant Matrix

• Main app product flavors: standard, noLegal, lite, photos, legacy, vr
• Main app build types: debug, staging, release
• Main app variant count: 18
• Wear build types: debug, release
• Total application variant count across both modules: 20

Flavor summary:

• standard: full phone/tablet build, 4 ABIs (arm64-v8a, armeabi-v7a, x86, x86_64)
• lite: lighter local-first build, 4 ABIs
• photos: image/cloud-focused build, 4 ABIs
• legacy: API 23-25 full-feature build, 4 ABIs
• noLegal: sideload-only full build with VR/XR and Python surface, 2 ABIs (arm64-v8a, x86_64)
• vr: OpenXR headset build, 1 ABI (arm64-v8a)

Build type summary:

• debug: debuggable, not minified, applicationIdSuffix ".debug", versionNameSuffix "-DEBUG"
• staging: initWith(release), debuggable, no minify, no resource shrink, suffixes .staging / -STAGING
• release: minified, resource shrinking enabled, native debugSymbolLevel = FULL, release signing required

Build Outputs and Size Facts

• Main app APK outputs: app_v2/build/outputs/apk/<flavor>/<buildType>/
• Wear APK outputs: wear/build/outputs/apk/<buildType>/
• Main app AAB outputs: app_v2/build/outputs/bundle/<flavor>Release/
• Main app metadata example: app_v2/build/outputs/apk/standard/debug/output-metadata.json

Latest local artifact found during this document refresh:

• Variant: standardDebug
• applicationId: com.sza.fastmediasorter.debug
• versionCode: 260621154
• versionName: 2.60.6211.547-DEBUG
• File: app_v2/build/outputs/apk/standard/debug/FastMediaSorter_standard_debug_v2.60.6211.547-DEBUG.apk
• Size: 118,188,207 bytes (112.71 MiB)
• Last write time: 2026-06-24 02:04:41 local time

Additional local binary footprint:

• Bundled custom decoder AAR: app_v2/libs/fms-ffmpeg-dts.aar
• AAR size: 11,495,586 bytes (10.96 MiB)

Size interpretation:

• The observed standardDebug APK is a universal local debug artifact, not a Play-delivered split
• It carries 4 ABIs, debug packaging, and no minification or resource shrinking
• Its size is therefore expected to be much larger than a release AAB-derived install on a single device

At the time of this refresh, no local Wear APK output or local AAB output was present under build/outputs.

Approximate Project Scale

Snapshot date for the metrics below: 2026-06-24.

Code volume:

• Production Kotlin/Java files: 1,749
• Production Kotlin/Java lines: 246,348
• Test Kotlin/Java files: 377
• Test Kotlin/Java lines: 34,696
• Combined Kotlin/Java files: 2,126
• Combined Kotlin/Java lines: 281,044
• XML resource files: 837
• XML resource lines: 54,849
• Layout XML files only: 292

Model and state surface:

• Files in explicit model/ or models/ directories: about 62
• Of those, domain-model files: about 56
• Data-model files: about 2
• UI-model files: about 4
• Room entity files: 17

Screen surface:

• Activity files: 43
• Fragment files: 29
• Compose *Screen.kt files: 12
• Dialog / dialog-fragment files: 42
• ViewModel files: 39
• Practical user-visible screen estimate: roughly 80-120 surfaces, depending on whether dialogs, modal flows, and orientation-specific hosts are counted as separate screens

Engineering effort estimate:

• Rough engineering-only estimate for the current codebase shape: about 6,000-9,000 person-hours
• Broader delivery estimate including architecture churn, integration debugging, regression handling, release plumbing, and polish: about 8,000-12,000 person-hours
• This is an inference, not a historical log. The estimate is driven by the size of the production code, 20 application variants across app_v2 + wear, multiple network/cloud/media integrations, and the custom build/release automation around them

Dependency Highlights

• DI and persistence: Hilt 2.59, Room 2.7.0, WorkManager 2.9.0, DataStore 1.0.0
• UI: Jetpack Compose BOM 2024.02.00, Material 3, Activity 1.10.1, Lifecycle 2.7.0, ConstraintLayout 2.1.4
• Media: Media3 1.2.1 (exoplayer, ui, common, session, effect, plus flavor-mounted hls, dash, rtsp, midi)
• Imaging and capture: Glide 4.16.0, Coil 2.5.0 (Wear), CameraX 1.5.3, PhotoView 2.3.0, ExifInterface 1.3.7
• Network and auth: SMBJ 0.12.1, JSch 0.2.26 (app) / 0.2.17 (wear), Commons Net 3.10.0, OkHttp 4.12.0, Retrofit 2.9.0, AppAuth 0.11.1
• Cloud SDKs: Play Services Auth 21.0.0, Dropbox Core SDK 5.4.5, MSAL 6.0.1
• OCR, translation, docs, archives: ML Kit Translate 17.0.3, Language ID 17.0.6, Tesseract4Android 4.8.0, epub4j-core 4.2, jsoup 1.17.2, Markwon 4.6.2, zip4j 2.11.5
• Sideload / XR-only surface: Chaquopy Python 3.12, yt-dlp==2026.6.9, OpenXR loader 1.1.48, NewPipeExtractor v0.26.1

Feature Surface Notes

• standard and legacy keep the broadest phone/tablet surface: media, cloud, documents, translation, Wear companion, Cast
• lite removes cloud, documents, local-network protocols, translation, persistent audio, and Wear companion to reduce app surface
• photos keeps images plus cloud/network storage, but removes audio/video/document features
• noLegal extends the full build with sideload-only integrations and XR-capable runtime hooks
• vr keeps full media capability but packages only arm64-v8a and mounts OpenXR-specific native/runtime pieces

Network Protocol Notes

• SMB: SMBJ (com.hierynomus:smbj:0.12.1)
• FTP: Apache Commons Net (commons-net:3.10.0)
• SFTP: JSch (com.github.mwiede:jsch) in both modules, with different pinned versions
• Internet streams: Media3 selects HLS, DASH, RTSP, or progressive playback sources at runtime
• Cast path: Google Cast SDK 21.4.0 + MediaRouter 1.7.0 + in-process nanohttpd:2.3.1 proxy
• Public cleartext http:// streams remain supported because many radio/stream endpoints are still unencrypted