Carla

• Fix double backslash encoding in pre-included serd
• Fix a few minor ttl details in carla.lv2 (to make validators happy)
• Fix potential audio buffer overflow issues due to over-optimization in math utilities
• Fix winevst for DLL_PROCESS_ATTACH

• Allow configuration of Carla client name when headless (via CARLA_CLIENT_NAME env var)
• Fix save missing LV2 files
• Fix some wine bridge details

• Fix compatibility of plugin discovery with newer 2.6.x tools
• Fix crash when using JACK under Linux ARM
• Fix carla-lv2 pre-run with 0 frames
• Fix carla-vst GUI for high-dpi screens
• Fix carla-native-plugin library exported symbols
• Show custom error message when trying to start JACK driver without JACK
• Skip special treatment for LADISH (do not set session management hints)

• Allow IPC during plugin discovery (controlled by external tools)
• Expose a few extra APIs in carla-utils library
• Install extra carla-utils related headers during make install
• Fix invalid/empty LV2 paths for compatibility with lilv
• Fix LV2 plugin state for plugin bridges
• Fix showing engine device settings on systems without JACK
• Fix usage with LMMS on Windows
• Remove use of REAL_BUILD macro, no longer needed
• Tweaks for integration in OBS
• Other minor fixes and cleanup

• Fix crash/regression when using LV2 plugins without worker extension
• Fix compat with PyQt >= PyQt 5.15.8
• Fix macOS build
• Simplify JACK event handling, now using a single queue on the main thread

• Always set time frame information for JUCE hosted plugins
• Fix canvaspreview out-of-bounds panning for patchbay
• Fix receiving LV2 atoms bigger than 32kB
• Fix peak metering reading values out of bounds
• Fix missing </li> code in about information string
• Support the more verbose LV2 MIDI CC definitions
• Use SDL driver by default on Haiku

• Fix includedir/libdir variables in pkg-config files
• Fix LV2 plugins sending MIDI events out of order when using MIDI mapping for control output ports
• Fix VST2 all-notes/sound-off events after re-activation
• Fix "use outer frame for carla-lv2" from v2.5.1
• Correct jackbridge build flags, prevent LTO from being used in wine stuff

• Do not set scale factor for LV2 plugin UIs on macOS
• Fix external MIDI connections for JUCE engine driver
• Fix a few memory leaks and runtime issues
• Fix several race conditions
• Fix logic around engine driver listings
• Fix position of external patchbay graph nodes not being restored when switching from internal to external
• Fix RISC-V builds
• Fix win32 bridge builds on win64 systems (forcing usage of i686-w64-mingw32 if needed)
• Ignore some compiler warnings from Qt side
• Use an outer frame for carla-lv2 outgoing events

• Add JSFX plugin support
• Add SDL engine driver
• Adapt engine code to allow single-threaded web-assembly builds
• Fix macOS installer to run without rosetta2
• Use full driver settings dialog if opened via menu and engine is not running
• Update built-in DPF
• Update to JUCE 7.0.1

Fixes:

• Fix inaccurate MIDI CC rounding
• Fix one more python3.10 compatibility issue
• Fix one more Windows UTF-16 issue

Other changes:

• Do not use -fno-gnu-unique on BSD
• Support mod:volts as LV2 unit
• Update dependency list in INSTALL.md

Fixes:

• Fix build for Alpine Linux and BSD
• Fix integration with internal Qt toolbar visibility state
• Fix plugin search (regression from 2.4.2)
• Fix several Windows UTF-16 issues

Build related changes:

• Add -fno-gnu-unique to default build flags
• Implement VERBOSE make flag
• Make build compatible with LTO, now enabled on official macOS/Windows binaries
• Replace CARLA_EXPORT macro with separate API / PLUGIN export options
• Set new X-NSM-Exec desktop file property

Fixes:

• Fix a few crashes with JACK applications inside Carla
• Fix build on non-supported systems by JUCE
• Fix crash when LV2 X11 UI has non-mapped child window
• Fix compatibility with Python 3.10
• Fix default SF2/3 path
• Fix LV2 UI resizing on macOS
• Fix missing VST3 plugins not being searched recursively
• Disable GraphicsScene indexing method to prevent crashes
• Ensure custom data state save and restore always match

Changes:

• Add "[carla]" prefix to printed messages
• Add appdata metadata information
• Add notice when Carla needs to be restarted after an LV2 rescan
• Add VST3 Windows common files to the default path (required by the latest VST3 spec)
• Default to JACK backend if pipewire-jack replacement is installed
• Implement dry/wet, volume and balance on JUCE hosted plugins
• Reload audio file if sample rate changes
• Use temporary files for big custom data values in bridges

Changes for using Carla as library:

• Add 8 CV, 32 IO and 64 IO CarlaPatchbay variants
• Add audio port hints to backend, starting with lv2 sidechain
• Add static plugin build target
• Add WITH_LTO build option, disabled by default
• Allow setting a custom C++ namespace
• More work on experimental embed plugin UIs, now also possible on plugin bridges

• Better handling of VST3 parameters (hide as needed, number of steps, etc)
• Fix compatibility with Python 3.10
• Fix getting the proper X11 UIs size for more plugins
• Fix plugin bridges not automatically closing if main Carla dies on macOS (similar to how it is done on Linux)
• Fix unused parameters preventing real ones from showing up in the edit plugin dialog
• Fix CarlaNativePlugin.h and CarlaPluginPtr.hpp header files not installed system-wide
• Fix XY-Controller GUI missing on "make install" target
• Fix VST2 plugins under macOS and High-DPI (by not reporting scale factor)
• Replace -lpthread usage with -pthread, fixing RISC-V builds
• Send keyboard and focus events as needed/possible to VST2 and VST3 UIs
• Small tweaks to XY-Controller (make lines 1px thick, close UI with Esc key)
• Special tweaks for static plugin target build (embeding carla statically in other applications/plugins)
• Other minor fixes and tweaks

• Add option to use classic skin by default
• Add support for lv2 ui gtk bridges on any system
• Set display scale factor for carla-bridge-*/carla-single standalone usage (on macOS and X11 systems)
• Fix Linux VST3 plugin GUIs crash on close
• Fix build under msys2 (will not force static binaries)
• Fix keyboard focus for bridges on macOS (2nd attempt)
• Fix canvas icon in settings to be high-dpi compatible
• Fix wrong scale factor of plugin GUIs under macOS

• Add 32x32 icon
• Do not show "--gdb" in usage/help when not installed system-wide
• Fix default SF2 search path
• Fix keyboard focus for bridges on macOS
• Fix X11-UIs related regressions in v2.3.1

• Add NSLocalNetworkUsageDescription and NSMicrophoneUsageDescription in macOS builds
• Allow canvas eyecandy for Qt >= 5.12
• Alternative approach to deal with JACK postponed events (improves PipeWire usage)
• Implement parameter groups for VST2 plugins
• Ignore hosts calling Carla-VST effOpen twice (don't print errors)
• Listen to Windows and X11 plugin UI resize events (without extensions)
• Make some macOS dialogs modal
• Remove favorite plugins from list when they fail to load
• Update JUCE plugin code to new APIs, hook into VST2 for feature parity with native implementation
• Use new tick_double for JACK transport
• Use posix_spawn to launch macOS bridges
• Fix available decimal points on a few dialogs being incorrect
• Fix bridged plugin UIs appearing behind main carla window on macOS
• Fix canvas auto-refreshing on exit, potentially leading to crash
• Fix canvas split/join action
• Fix carla-vst-wine symbol visibility
• Fix default rack "skin" for a few plugins
• Fix initial size for LV2 UIs with no UI resize extension (all OSes)
• Fix loading state of Windows/macOS VST2 plugins without chunk
• Fix macOS binaries not being debug/symbol stripped
• Fix midi-pattern plugin having double notes on transport reposition
• Fix race condition (and potential crash) around postponed RT events
• Fix Qt >= 5.10 version checks
• Fix unused JACK latency callbacks (removed)
• Fix X11 UIs not having keyboard focus

Changelog for v2.3-RC2 -> v2.3

• Fix a float vs int usage, which will break in python soon
• Fix cancelling plugin discovery
• Fix main client name for multiple carlas inside NSM
• Fix missing vst3 poly aftertouch
• Fix patchcanvas use of keyboard modifiers
• Fix project filename/folder only set after saving once
• Fix recursive VST2 audioMasterAutomate parameter changes
• Fix sorting plugins by favorite
• Do not run 2nd instance of lv2 plugin if it has event output(s)
• Read lv2 midi:binding on control ports and parameters
• Use Ctrl+P to open/close side panel
• Use fixed buffers on standalone bridge mode
• midipattern: overall fix up
• midipattern: use Esc key to close UI

Official release announcement at https://kx.studio/News/?action=view&url=carla-plugin-host-v23-is-here

See the release notes at https://kx.studio/News/?action=view&url=carla-23-rc2-is-here

See release notes at https://kx.studio/News/?action=view&url=carla-23-rc1-is-here

See release announcement at https://kx.studio/News/?action=view&url=carla-plugin-host-v22-is-finally-here