News

LV2 1.18.2 has been released. LV2 is a plugin standard for audio systems. It defines a minimal yet extensible C API for plugin code and a format for plugin "bundles". See http://lv2plug.in for more information.

Changes:

• Various code cleanups and infrastructure improvements.
• eg-sampler: Save and restore gain parameter value.
• state: Fix state:StateChanged URI in metadata and documentation.

LV2 1.18.0 has been released. LV2 is a plugin standard for audio systems. It defines a minimal yet extensible C API for plugin code and a format for plugin "bundles". See http://lv2plug.in for more information.

Changes:

• Improve documentation.
• Separate extended documentation from primary data.
• core: Add lv2:Markdown datatype.
• core: Deprecate lv2:reportsLatency.
• patch: Fix incorrect type of patch:sequenceNumber.
• port-groups: Remove incorrect type of pg:letterCode.
• port-groups: Replace broken links with detailed Ambisonic channel descriptions.
• state: Add state:freePath feature.
• ui: Add ui:requestValue feature.
• ui: Add ui:scaleFactor, ui:foregroundColor, and ui:backgroundColor properties.
• ui: Deprecate ui:binary.
• worker: Improve documentation.

LV2 1.16.0 has been released. LV2 is a plugin standard for audio systems. It defines a minimal yet extensible C API for plugin code and a format for plugin "bundles". See http://lv2plug.in for more information.

Changes:

• Add core/attributes.h utility header.
• Add lv2_validate utility.
• Aggressively deprecate uri-map and event extensions.
• Install headers to simpler paths.
• Simplify use of lv2specgen.
• Upgrade build system and fix building with Python 3.7.
• atom: Add lv2_atom_object_get_typed() for easy type-safe access to object properties.
• core: Add lv2:MIDIPlugin class.
• core: Rework port restrictions so that presets can be validated.
• eg-midigate: Respond to "all notes off" MIDI message.
• eg-sampler: Add waveform display to UI.
• midi: Fix incorrect range of midi:chunk.
• options: Relax range of opts:requiredOption and opts:supportedOption
• patch: Add patch:accept property.
• patch: Add patch:context property.
• state: Add state:StateChanged for notification events.
• time: Clarify time:beat origin.
• units: Fix outdated port description in documentation.
• units: Remove overly restrictive domain from units:unit.

LV2 1.14.0 has been released. LV2 is a plugin standard for audio systems. It defines a minimal yet extensible C API for plugin code and a format for plugin "bundles". See http://lv2plug.in for more information.

Changes:

• buf-size: Add bufsz:coarseBlockLength feature.
• buf-size: Add bufsz:nominalBlockLength option.
• core: Add lv2:enabled designation.
• core: Add lv2_util.h with lv2_features_data() and lv2_features_query().
• eg-sampler: Fix handling of state file paths.
• eg-sampler: Support thread-safe state restoration.
• eg-scope: Don't feed back UI state updates.
• log: Add lv2_log_logger_set_map() for changing the URI map of an existing logger.
• state: Add LV2_STATE_ERR_NO_SPACE status flag.
• state: Add state:threadSafeRestore feature for dropout-free state restoration.
• time: Define LV2_TIME_PREFIX.
• ui: Add missing property labels.
• ui: Improve documentation.

LV2 1.12.0 has been released. LV2 is a plugin standard for audio systems. It defines a minimal yet extensible C API for plugin code and a format for plugin "bundles". See http://lv2plug.in for more information.

Changes:

• Fix merging of version histories in specification documentation.
• Improve API documentation.
• Simplify property restrictions by removing redundancy.
• core: Add extern C and visibility attribute to LV2_SYMBOL_EXPORT.
• core: Add lv2:isSideChain port property.
• core: Relax domain of lv2:minimum lv2:maximum and lv2:default so they can be used to describe properties/parameters as well.
• eg-sampler: Add gain parameter.
• eg-sampler: Support patch:Get, and request initial state from UI.
• parameters: Add range to parameters so hosts know how to control them.
• patch: Add patch:Copy method.
• patch: Define patch:Get with no subject to implicitly apply to reciever. This can be used by UIs to get an initial description of a plugin.
• units: Add lv2:Parameter to domain of units:unit.
• units: Fix non-existent port type in examples.

LV2 1.10.0 has been released. LV2 is a plugin standard for audio systems. It defines a minimal yet extensible C API for plugin code and a format for plugin "bundles". See http://lv2plug.in for more information.

Changes:

• Fix -Wconversion warnings in headers.
• Upgrade to waf 1.7.16.
• atom: Add lv2_atom_forge_is_object_type() and lv2_atom_forge_is_blank() to ease backwards compatibility.
• atom: Add lv2_atom_forge_key() for terser object writing.
• atom: Add lv2_atom_sequence_clear() and lv2_atom_sequence_append_event() helper functions.
• atom: Deprecate Blank and Resource in favour of just Object.
• core: Clarify lv2_descriptor() and lv2_lib_descriptor() documentation.
• event: Minor documentation improvements.
• lv2specgen: Display deprecated warning on classes marked owl:deprecated.
• patch: Add patch:sequenceNumber for associating replies with requests.
• ui: Add show interface so UIs can gracefully degrade to separate windows if hosts can not use their widget directly.
• ui: Fix identifier typos in documentation.

LV2 1.8.0 has been released. LV2 is a plugin standard for audio systems. It defines a minimal yet extensible C API for plugin code and a format for plugin "bundles". See http://lv2plug.in for more information.

Changes:

• Add scope example plugin from Robin Gareus.
• Install lv2specgen for use by other projects.
• atom: Make lv2_atom_*_is_end() arguments const.
• core: Add lv2:prototype for property inheritance.
• log: Add missing include string.h to logger.h for memset.
• lv2specgen: Fix links to externally defined terms.
• ui: Fix LV2_UI_INVALID_PORT_INDEX identifier in documentation.

LV2 1.6.0 has been released. LV2 is a plugin standard for audio systems. It defines a minimal yet extensible C API for plugin code and a format for plugin "bundles". See http://lv2plug.in for more information.

Changes:

• Fix lv2specgen usage from command line.
• Fix port indices of metronome example.
• Upgrade to waf 1.7.11.
• atom: Fix crash in forge.h when pushing atoms to a full buffer.
• ui: Add idle interface so native UIs and foreign toolkits can drive their event loops.
• ui: Add ui:updateRate property.

LV2 1.4.0 has been released. LV2 is a plugin standard for audio systems. It defines a minimal yet extensible C API for plugin code and a format for plugin "bundles". See http://lv2plug.in for more information.

Changes:

• Add metronome example plugin to demonstrate sample accurate tempo sync.
• Generate book-style HTML documentation from example plugins.
• atom: Fix lv2_atom_sequence_end().
• atom: Improve atom documentation.
• atom: Remove atom:stringType in favour of owl:onDatatype so generic tools can understand and validate atom literals.
• buf-size: Fix typo in bufsz:sequenceSize label.
• core: Add lv2:EnvelopePlugin class.
• core: Add lv2:control for designating primary event-based control ports.
• core: Make lv2:Parameter rdfs:subClassOf rdf:Property.
• core: Reserve minor version 0 for unstable development plugins.
• core: Set range of lv2:designation to lv2:Designation.
• event: Fix incorrect return type in lv2_event_get().
• log: Add logger convenience API.
• options: Set the range of opts:requiredOption and opts:supportedOption to opts:Option.
• patch: Add patch:readable and patch:writable for describing available properties.
• patch: Make patch:Set a compact message for setting one property.
• state: Add state:loadDefaultState feature so plugins can have their default state loaded without hard-coding default state as a special case.
• ui: Fix incorrect linker flag in ui:makeSONameResident documentation.

LV2 1.2.0 has been released. LV2 is a plugin standard for audio systems. It defines a minimal yet extensible C API for plugin code and a format for plugin "bundles". See http://lv2plug.in for more information.

Changes:

• Move all project metadata for extensions (e.g. change log) to separate files to spare hosts from loading them during discovery.
• Use stricter datatype definitions conformant with the XSD and OWL specifications for better validation.
• atom: Add LV2_ATOM_CONTENTS_CONST and LV2_ATOM_BODY_CONST.
• atom: Add lv2_atom_object_body_get().
• atom: Fix implicit conversions in forge.h that are invalid in C++11.
• atom: Fix lv2_atom_object_next() on 32-bit platforms.
• atom: Fix outdated documentation in forge.h.
• atom: Use consistent label style.
• buf-size: Initial release.
• core: Use consistent label style.
• dynmanifest: Use consistent label style.
• event: Make event iterator gracefully handle optional ports.
• event: Remove asserts from event-helper.h.
• event: Use consistent label style.
• event: Use more precise domain and range for EventPort properties.
• midi: Add C definitions for message types and standard controllers.
• midi: Add midi:HexByte datatype for status bytes and masks.
• midi: Add midi:binding and midi:channel predicates.
• midi: Fix definition of SystemExclusive status byte.
• midi: Remove non-standard midi:Tick message type.
• midi: Use consistent label style.
• morph: Initial release.
• options: Initial release.
• parameters: Add param:sampleRate.
• parameters: Add parameters.h of URI defines for convenience.
• parameters: Use consistent label style.
• port-groups: Use consistent label style.
• port-props: Use consistent label style.
• presets: Add preset banks.
• presets: Use consistent label style.
• state: Use consistent label style.
• time: Use consistent label style.
• ui: Add missing LV2_SYMBOL_EXPORT declaration for lv2ui_descriptor prototype.
• ui: Add types for WindowsUI, CocoaUI, and Gtk3UI.
• ui: Use consistent label style.
• units: Remove units:name in favour of rdfs:label.
• units: Use consistent label style.
• urid: Fix typo in urid:unmap documentation.

LV2 1.0.0 has been released. LV2 is a plugin standard for audio systems. It defines a minimal yet extensible C API for plugin code and a format for plugin "bundles". See http://lv2plug.in for more information.

Changes:

• Initial release as a unified project. Projects can now simply depend on the pkg-config package 'lv2' for all official LV2 APIs.
• New extensions: atom, log, parameters, patch, port-groups, port-props, resize-port, state, time, worker.
• atom: Initial release.
• core: Add lv2:CVPort.
• core: Add metadata concept of a designation, a channel or parameter description which can be assigned to ports for more intelligent use by hosts.
• core: Add new discovery API which allows libraries to read bundle files during discovery, makes library construction/destruction explicit, and adds extensibility to prevent future breakage.
• core: Fix LV2_SYMBOL_EXPORT and lv2_descriptor prototype for Windows.
• core: Merge with unified LV2 package.
• core: Relax the range of lv2:index so it can be used for things other than ports.
• core: Remove lv2:Resource, which turned out to be meaningless.
• data-access: Merge with unified LV2 package.
• dynmanifest: Merge with unified LV2 package.
• event: Fix bug in lv2_event_reserve().
• event: Fix incorrect ranges of some properties.
• event: Merge with unified LV2 package.
• instance-access: Merge with unified LV2 package.
• log: Initial release.
• midi: Add class definitions for various message types.
• midi: Document how to serialise a MidiEvent to a string.
• midi: Merge with unified LV2 package.
• parameters: Initial release.
• patch: Initial release.
• port-groups: Initial release.
• port-props: Initial release.
• presets: Add pset:preset property for describing the preset currently applied to a plugin instance.
• presets: Merge with unified LV2 package.
• presets: Remove pset:appliesTo property, use lv2:appliesTo instead.
• resize-port: Initial release.
• state: Initial release.
• time: Initial release.
• ui: Add port protocols and a dynamic notification subscription mechanism, for more flexible communication, and audio port metering without control port kludges.
• ui: Add support for referring to ports by symbol.
• ui: Add touch feature to notify the host that the user has grabbed a control.
• ui: Add ui:parent and ui:resize.
• ui: Add ui:portMap for accessing ports by symbol, allowing for UIs to be distributed separately from plugins.
• ui: Merge with unified LV2 package.
• units: Add header of URI defines.
• units: Add unit for audio frames.
• units: Merge with unified LV2 package.
• uri-map: Merge with unified LV2 package.
• urid: Add feature struct names.
• urid: Merge with unified LV2 package.
• worker: Initial release.