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Usine Hollyhock SDK Wiki

Welcome to the Usine Hollyhock SDK documentation wiki. This SDK allows you to create custom user modules for the Usine Hollyhock modular environment using C++.

Quick Navigation

Getting Started

• getting-started — Overview of the SDK, prerequisites, and your first module
• writing-user-modules-windows — Step-by-step Visual Studio setup
• writing-user-modules-macos — Step-by-step Xcode setup

Architecture & Reference

• class-diagram — Complete Mermaid class diagram of the SDK
• module-architecture — How modules work, lifecycle, and data flow
• user-module-base — The base class every module inherits from
• usine-event-class — The main data container class
• data-types — All SDK types, structs, enums, and constants
• sdk-functions — Global utility functions (audio, threads, files, etc.)
• utility-functions — Color, geometry, and numeric helpers
• release-notes — SDK version history

Examples

Templates

• template-module-simple — Minimal starting template
• template-module — Full template with all callback stubs
• my-module — Simple frequency-to-period converter

Audio Processing

• audio-volume — Multi-channel gain control with mute
• ring-mod — Ring modulator effect
• ring-mod-multithread — Ring modulator with parallel threading
• reverb — Freeverb-based reverb processor
• granulator — Granular synthesis engine
• array-delay — Per-channel array delay line

Data & MIDI Processing

• data-multiply — Simple data multiplication
• data-sampler — Data recording and playback
• midi-transpose — MIDI note transposition

Graphics & Visualization

• data-oscilloscope — Scrolling waveform display
• draw-box — Interactive rectangle drawing
• draw-trajectory-box — Trajectory drawing with bezier curves
• simple-pad — Multi-pad XY controller
• video-dimmer — Video frame processing

System & Advanced

• background-job — Asynchronous background tasks
• multithreading — Thread creation and synchronization
• global-array — Shared global array manipulation
• usine-chunks — Chunk-based data persistence
• usine-objects — Remote object access API
• usine-pointers — Raw pointer data passing

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SDK Version: 702002 (Hollyhock 7)
License: MIT
Copyright: BrainModular / Adamson