# LV2 Specifications

Version | 1.18.10
Discuss | devel@lists.lv2plug.in (subscribe)

Specification | API | Description | Version | Status
--- | --- | --- | --- | ---
Atom | Atom | A generic value container and several data types. | 2.4 | Stable
Buf Size | Buf Size | Access to, and restrictions on, buffer sizes. | 1.4 | Stable
Data Access | Data Access | Provides access to plugin extension data. | 1.6 | Stable
Dynamic Manifest | Dynamic Manifest | Support for dynamic manifest data generation. | 1.6 | Stable
Event | Event | A port-based real-time generic event interface. | 1.14 | Deprecated
Instance Access | Instance Access | Provides access to the LV2_Handle of a plugin. | 1.6 | Stable
Log | Log | A feature for writing log messages. | 2.4 | Stable
LV2 | LV2 | An extensible open standard for audio plugins | 18.6 | Stable
MIDI | MIDI | A normalised definition of raw MIDI. | 1.10 | Stable
Morph | Morph | Ports that can dynamically change type. | 1.0 | Stable
Options | Options | Runtime options for LV2 plugins and UIs. | 1.4 | Stable
Parameters | Parameters | Common parameters for audio processing. | 1.4 | Stable
Patch | Patch | A protocol for accessing and manipulating properties. | 2.10 | Stable
Port Groups | Port Groups | Multi-channel groups of LV2 ports. | 1.4 | Stable
Port Properties | Port Properties | Various properties for LV2 plugin ports. | 1.2 | Stable
Presets | Presets | Presets for LV2 plugins. | 2.8 | Stable
Resize Port | Resize Port | Dynamically sized LV2 port buffers. | 1.0 | Stable
State | State | An interface for LV2 plugins to save and restore state. | 2.10 | Stable
Time | Time | A vocabulary for describing musical time. | 1.6 | Stable
UI | UI | User interfaces for LV2 plugins. | 2.24 | Stable
Units | Units | Units for LV2 values. | 5.12 | Stable
URI Map | URI Map | A feature for mapping URIs to integers. | 1.6 | Deprecated
URID | URID | Features for mapping URIs to and from integers. | 1.4 | Stable
Worker | Worker | Support for doing non-realtime work in plugins. | 1.2 | Stable