- viewer: fix pixel format selection #765 (Emmanuel)
- viewer: add component selection support (Emmanuel)
- buffer: add component id getter (Emmanuel)
- buffer: fix multipart informations (Emmanuel)
- gv: fix multipart data accessor (Emmanuel)
- gv: improve error handling of network API (Emmanuel)
- python: fix crash in stream callback #714 (Cyril)
- gv: multipart support (Emmanuel)
- gv: chunk data payload support (Emmanuel)
- gv: use the trailer packet for expected data size calculation (Emmanuel)
- gv: reset SCPx register on stream finalization
- gv: API to allow discovery ack broadcast (Emmanuel)
- gv: add more legacy endianness entries (Tomohisa, Radim, Emmanuel)
- gv: fix infinite loop in auto packet size (Emmanuel)
- gv: don't use source port in socket packet mode (Emmanuel)
- genicam: AccessMode improvements (Emmanuel)
- camera: add a Component API (Emmanuel)
- buffer: part access API (Emmanuel)
- cameratest: allow to set features from a string (Emmanuel)
- ci: windows build fixes (Momoko, Emmanuel)
- doc: improvements (Masahiro, Emmanuel)
- camera: new network command for IP settings (Romain, Masahiro)
- camera: don't fail if TriggerSelector is not available (Romain)
- camera: make region setting work even without Offset features (Emmanuel)
- camera: allow frame rate setting during acquisition on more devices #683 (Emmanuel)
- gstplugin: allow low frame rate with external triggers (Edgar)
- genicam: list for forced legacy mode (Romain)
- genicam: access mode check policy (Emmanuel)
- genicam: fix inifinite loop during availability check #678 (Emmanuel)
- u3v: use libusb device-left event for control lost detection (Emmanuel)
- genicam: fix information loss #656 (Emmanuel)
- fake_camera: add TriggerSoftware support (Romain)
- build: appdata fix (Chiara)
- build: disable documentation by default (Emmanuel)
- tests: fix ChunkFloat test on big endian platform #670 (Emmanuel)
- introspection: fix user_data_destroy_func annotations (Thomas)
- misc: memory leak and warning fixes (Emmanuel)
- build: FreeBSD support #620 (Rim)
- gigevision: performance improvement of standard socket method #617 (Emilio)
- usb3vision: prevent USB command mix up #622 (Edgar)
- usb3vision: fix PacketResend size field in extended ID mode #642 (Alexander)
- genicam: allow more Category child nodes #632 (Emmanuel)
- genicam: AccessMode fixes #634 (Emmanuel)
- genicam: fix pIsLocked when target is a Boolean node #638 (Emmanuel)
- doc: port to gi-docgen #621 (Emmanuel)
- git: default branch is main now (Emmanuel)
- camera: make set_frame_rate more robust for Basler cameras (Thies)
- misc: add runtime version API (Emmanuel)
- misc: ignore leading spaces in genicam data url (Emmanuel)
- misc: add get_device_manufacturer_info API (Emmanuel)
- qa: fix incorrect memory access (Jose)
- gstreamer: allow to select asynchronous USB mode (Christian)
- windows: fix thread priority helpers (Garfeng)
- meson: fix compilation using meson 0.60 (Emmanuel)
- doc: ubuntu 20.04 build do cimprovements (Brian)
- camera: black level support (Brian)
- camera: GainAbs support for gain setting (Brian)
- camera: FrameBurstStart support for trigger configuration (Emmanuel)
- viewer: minor layout fixes (Emmanuel)
- ci: MSVC improvements (Siim)
- usb3vision: fix header inclusion when USB is disabled (Marc)
- tests: register cache test (Emmanuel)
- windows: Microsoft Visual C++ support (Siim)
- usb3vision: async mode (Takuro, Constantine)
- usb3vision: use GUID for device disambiguation (Takuro)
- test: extend test coverage in arv-test (Emmanuel)
- viewer: in-app notification for save error (Emmanuel)
- camera: make set_trigger more robust (Emmanuel)
- tool: add glob pattern based device and feature selection (Emmanuel)
- ci: use Github actions for linux and macOS (Emmanuel)
- ci: minGW support (Václav)
- gigevision: use proper broadcast addresses during discovery (Václav)
- camera: accessor to float feature increment (Emmanuel)
- camera: make set_trigger more robust (Emmanuel)
- camera: fallback to Continuous mode if SingleFrame is not available (Emmanuel)
- viewer: allow to save a snapshot as png or jpeg image (Emmanuel)
- viewer: display all pixel formats in selector (Emmanuel)
- simulator: now works on Windows and macOS (Václav, Emmanuel)
- debug: fix output on Windows (Václav)
- doc: Windows build documentation (Václav)
- tests: new arv-test application for automated testing (Emmanuel)
- gigevision: only disable packet resend after a packet unavailable error
- gigevision: add a new packet timeout for first packet resend request
- doc: improve GvStream property documentation
- code cleanup
- debug: fix debug timestamp on older platforms (Emmanuel)
- viewer: fix incorrect bandwith and frame rate computation
- usb3vision: initialize stream infos
- stream: add an extensible info API (Emmanuel)
- gvstream: improve packet resend request behaviour in case of unordered gvsp packets (Emmanuel)
- gvstream: wait for thread setup during ArvGvStream initialization (Emmanuel)
- gigevision: use MAC as serial number fallback (Emmanuel)
- genicam: fix arv_exposure_mode_to_string (Martin)
- usb3vision: improve error reporting in case of libsub error (Emmanuel)
- usb3vision: automatically detach kernel driver (Emmanuel)
- cameratest: add a test duration parameter (Emmanuel)
- misc: rename internal ArvStatistic to ArvHistogram (Emmanuel)
- arv-tool: make device enumeration faster (Emmanuel)
- debug: rework debug log levels (Emmanuel)
- fakegvcamera: improve streaming reliability - partly fix #499 (Emmanuel)
- gvstream: fix use after reference release - fix #504 (Emmanuel)
- genicam: String node support - fix #507 (Emmanuel)
- windows: build fix (Emmanuel)
- arv-camera-test: promote to installed application (Emmanuel)
- applications: fix policy parameter consistency (Emmanuel)
- debug: timestamped and modernized output (Emmanuel)
- genicam: add a range check debug mode (Emmanuel)
- gvdevice: faster finalization (Emmanuel)
- camera: new DeviceSerialNumber getter (Emmanuel)
- camera: ignore Acquisitiontart feature setting failure (Emmanuel)
- camera: fix trigger setting for Basler cameras (Casperoo)
- camera: add set_exposure API (Emmanuel)
- gigevision: Windows support (Václav)
- usb3vision: better error packet handling (Emmanuel)
- genicam: allow get/set float from an int node (Emmanuel)
- genicam: allow multiple pIndex property nodes (Emmanuel)
- camera: handle GainRaw also as a float feature
- camera: add arv_camera_new_with_device()
- camera: ignore error on TriggerSelector and TriggerMode setting in arv_camera_set_trigger()
- gigevision: fail quicker if a device is not found at ArvGvDevice instantiation
- fakegvcamera: fix interface selection
- genicam: implement optional range check for integer and float node values, as a runtime option
- genicam: fix min/max computation for StructEntry and MaskedIntReg nodes
- gstplugin: don't fail camera init if gain or exposure features are not available
- macOS: build fix
- travis:enable macOS
- all: s/adjustement/adjustment/
- gigevision: automatically adjust packet size if needed (Emmanuel)
- gstreamer: don't try to set frame rate if feature is not available (Emmanuel)
- genicam: fix pVariable name with dot (Arrigo)
- genicam: fix parsing of genicam data url (Emmanuel)
- buffer: add arv_buffer_set_frame_id API (Russel)
- usb3vision: add Dahua Technology USB id (H.F)
- build: preparatory work for windows compilation (Eudoxos)
- gvdevice: fix timeout race (casperoo)
- fakecamera: implement Mono16 pixel format (Hinko)
- Enable ppc64le in CI pipeline (nagesh)
- build: add more compilation warnings and fix them (Emmanuel)
- gigevision: ExtendedIds support (Hendrick, Emmanuel)
- gigevision: add get_control_access API (casperoo)
- genicam: implement proper AccessMode and ImposedAccessMode support (Siim)
- genicam: add or extend support for Representation, Unit, DisplayNotation and DisplayPrecision proerties (Siim)
- genicam: extend GcRregisterDescriptionNode API (Siim)
- genicam: improve String register (Siim)
- genicam: implement arv_gc_feature_get_name_space() (Siim)
- gst-plugin: don't shadow GstBaseSrc num-buffers property (Marko)
- usb3vision: add Daheng Imaging descriptors (Jakob)
- gst-plugin: error handling and lock fixes (Marko)
- build: fix when aravis is used as a subproject (Rihards)
- build: fix viewer build without libusb (Guillaume)
- fake camera: implement bayer pixel formats (Bernardo)
- gcregister: don't try to read WO registers (Stefan)
- viewer: fix buffer leak (Emmanuel)
- gvstream: correctly handle resend request limit (Emmanuel)
- stream: device reference leak fix (Emmanuel)
- camera/device/stream: add an error parameter to object intantiation functions (Emmanuel)
- camera: fix node type mismatch error in set_frame_rate (Arkadiusz)
- gigevision: ignore duplicated packets (Joris)
- build: make build of tests optional (Edgar)
- all: use gobject macros for class declarations (Emmanuel)
- camera: add a GError parameter to most functions (Emmanuel)
- python: add python tests in test suite (Emmanuel)
- usb3vision: improve reliability of camera connection (Dmitry)
- introspection: fix PixefFormat type (Léo, Maarten)
- gigevision: support for ImageExtendedChunkPayload (Nathan)
- chunkparser: add a GError parameter to the getters (Emmanuel)
- chunkparser: add a boolean accessor (Emmanuel)
- arvtool: new
valuescommand that show the values of all available features (Emmanuel) - gcport: don't try to read a register when the port is an event (Emmanuel)
- genicam: pSelect support (Emmanuel)
- genicam: remove value_type property, replaced by ARV_IS_GC_(FLOAT|INTEGER`BOOLEAN|STRING|ENUMERATION) (Emmanuel)
- genicam: simplify read/write feature values as/from string (Emmanuel)
- genicam: fix min/max of non 64 bit integers
- genicam: Float and Integer now get their min/max also from pValue (Emmanuel)
- gigevision: correctly detect access denied errors
- build: installation fixes (Emmanuel, Rafael)
- build: aravis is now built using meson (and only meson)
- camera: make set_region more robust (Aleksandr)
- usb3vision: fix an align assertion (Johannes)
- fakecamera: improve discovery (Russell)
- fakecamera: add RGB8 pixel format support (Russell)
- fakecamera: allow to instantiate several gvfakecamera (Emmanuel)
- gigevision: pending ack fix (Emmanuel)
- gigevision: better handling of GVCP error packets (Emmanuel)
- gstplugin: packet size parameter (Emmanuel)
- viewer: show stream statistics (Emmanuel)
- genicam: fix register cache (Emmanuel)
- camera: move feature read/write API with status here from ArvDevice (Emmanuel)
- device: add a GError parameter to feature read/write functions (Emmanuel)
- gvdevice: use Inc in auto packet size function (Emmanuel)
- genicam: implementation of
<Inc>support (Emmanuel) - viewer: icon refresh (Emmanuel)
- device: fix get_status return value (crabsmaps)
- gigevision: add more pixel format enums (emmanuel)
- stream: add stop/start thread API (Werner, Emmanuel)
- gigevision: allow to discover more devices (Michael)
- gigevision: stop stream thread quicker (Emmanuel)
- genicam: add element support (Nathan)
- genicam: let float node point to integer node (Emmanuel)
- usb3vision: sanity checks during device initialization (crabsmaps)
- gigevision: auto-packet size negociation improvements (Nils, Edgar)
- gigevision: interface addess assignment improvement (Nils)
- usb3vision: memory leak fixes (wuyuanyi)
- usb3vision: payload size computation fixes (Johannes)
Stable release.
- camera: avoid clashes in device id generation
- genicam: signedness and endianness related fix
- usb3vision: chunk data support (Emmanuel)
- camera: matrix vision device support (Nils)
- camera: PointGrey / FLIR renaming support (Nils)
- i18n: czech and slovak translations (Multiflexi)
- build: remove libcap-ng dependency (Nils)
- gigevision: disable GVSP extended id mode
- genicam: fix for signedness of register nodes
- genicam: add support for optional ROUND parameter (Aleksandr)
- add man page (Chiara)
- camera: ensure binning feature is present before using it (thecaptury)
- viewer: don't overwrite buffers still used by gstreamer (Tim)
- usb3vision: improve streaming reliability (Tim, Emmanuel)
- buid instruction update (Raphie, Rehno)
- translation updates (Rafael)
- camera: fix for PointGrey cmeras using AcquisitionFrameRateEnabled (Emmanuel)
- genicam: correctly implement integer mode of IntSwissKnife (Emmanuel)
- genicam: implementtion of pIndex, ValueIndexed, ValueDefault (Emmanuel)
- genicam: add Expression and Constant support to Converter and IntConverter (Emmanuel)
- evaluator: implement ROUND function (Emmanuel)
- evaluator: fix '~' precedence and associativity (Emmanuel)
- gigevision: protocol fixes (Emmanuel)
- gigevision: improve connection stability under high pressure (Michael)
- gigevision: avoid using the same port twice (Emmanuel)
- gvdevice: implement packet-resend-ration limit (Emmanuel)
- usb3vision: transfer size configuration fixes (Konstantin)
- build: improve OSX and Windows support (Emmanuel)
- build: improve build outside of source directory (Janito)
- viewer: improve Pixel format to GstCaps conversion (Emmanuel)
- viewer: disable gtkglsink for now to avoid a crash when switching views (Emmanuel)
- QA: extended code coverage (Emmanuel)
- QA: make travis build on OSX (Emmanuel)
- gige/usb3vision: device detection fixes (Nils)
- stream: allow to handle circular buffer from callback (Nils)
- build: OSX documentation fix (Mark)
- viewer: latency improvements (Emmanuel)
- viewer: show protocol in camera list view (Emmanuel)
- gigevision: faster connection to devices (Emmanuel)
- gigevision: PENDING ACK support (Emmanuel)
- gige/usb3vision: use vendor aliases for default device id (Emmanuel)
- buffer: save local system time in buffer metadate (Konstantin)
- usb3vision: better handling of unexpected answers (Emmanuel)
- stream: fix for self joining receiving thread issue (Michael)
- fake: new class for instantiation of fake cameras (Emmanuel)
- tests: new fakegv test that exercizes GigEVision protocol (Emmanuel
- build system update (code-coverage, address sanitizer and valgrind support) (Emmanuel)
- miscellaneous fixes for bug discovered vie the update build system (Emmanuel)
- usb3vision: Ximea camera support (Steve)
- usb3vision: TheImagingSource camera support (emmanuel)
- usb3vision: Bandwith control (Steve)
- usb3vision: USB endpoint detection improvments (Steve, Emmanuel)
- fake_camera: miscellaneous fixes (Michael)
- genicam: raw data support (Steve)
- camera: multiframe acquisition mode (Lee)
- camera: extension of the trigger API (Steve)
- gigevision: instantiation by IP address or hostname (Blaz, Arkadiusz)
- build: fix compilation with old glib (Blaz)
- build: intructions and compilation fix for OSX (Christoffer, Fernando)
- build: Travis and Coverity support on github (Emmanuel)
- genicam: implement Expression and Constant nodes for [Int]SwissKnife
- API: add ARAVIS_CHECK_VERSION macro
- API: forbid direct inclusion of headers other than arv.h
- usb3vision: PENDING_ACK support
- build: fix library detection needed for packet socket support (Hubert)
- gigevision: new API for automatic stream packet size (Emmanuel)
- gigevision: support of packet socket in stream thread (Emmanuel)
- usb3vision: fix USB3 device scan (Emmanuel)
- viewer: only show compatbile pixel format in selector
- viewer: fix binning setting on some cameras
- viewer: add a fallback to autovideosink if gtk[gl]sink are not available
- viewer: fix video position issue
- usb3vision: avoid unnecessary memory during video data transfer
- usb3vision: better handling of device disconnection
- gigevision: compile time selection of fast heartbeat mode (Michele)
- camera: helper function for single image acquisition
- viewer: new design with support for region settings
- usb3vision improvements
- camera: improve Basler support for exposure and frame rate
- camera: add support for x/y_offset and binning bounds
- interface: add vendor, model and serial getters
- genicam: implement min/max support for Converter elements
- usb3vision initial support
- buffer: add a timestamp setter
- interface: don't touch device list on open device
- viewer: fix appdata file
- genicam: add bigendian support (Emmanuel)
- camera: RICOH camera support (Anil)
- build fixes (Emmanuel)
- dox fixes (Jarek, Emmanuel)
- translation updates (Jordi, Jiri, Anders, Μύρων, Pedro, Cédric, Samir, Necdet)
- genicam: fix accuracy of division of integers (Emmanuel)
- new arv_make_high_priority and arv_make_realtime API (Emmanuel)
- viewer: make stream thread realtime if possible (Emmanuel)
- camera: add GigEVision specific API for packet delay, packet size and stream selection (Emmanuel)
- gst_pugins: add a number of buffers property (Patrick)
- build fixes (Patrick)
- translation updates (Tiago, Muhammet)
- build: add missing test commands in configure.ac (Adrian)
- camera: new abort_acquisition function (Davide)
- gv_stream: missing frame detection fix (Davide)
- buffer: user_data and frame_id accessors
- chunk_parser: bug fixes
- viewer: prevent use of broken coglsink from autovideosink
- translations: updates (Matej, Balázs, Andika, Daniel, Rafael)
- chunk_parser: new API for chunk data support
- buffer: make internal data private and add accessors
- viewer: add an appdata file
- misc: compilation warning fixes
- genicam: improve loading of genicam data from local files (Peter)
- build: dependency check improvements
- build: miscellaneous compilation fixes (Patrick)
- gst_pugins_1.0: bayer format fix (Steve)
- gst_plugin: new plugin based on gstreamer 1.0, in addition to the existing 0.10 version.
- gst_plugin: add packet-resend property.
- viewer: port to gstreamer 1.0, and drop support for gtk+ 2.0.
- viewer: fix video output for camera with buggy time stamping.
- camera: fix frame rate setting for Point Grey devices.
- gv_interface: fix device discovery by using 255.255.255.255 as broadcast address (Csaba).
- gv_interface: don't crash if there is no INET interface (Toby).
- camera: make ArvCamera introspection friendly (John).
- evaluator: fix comparison when one of the operand is a double.
- python: don't crash on access to buffer data.
- build: zlib check.
- build: make configure pass even if gobject introspection is not available.
- updated translations (Yuri).
- updated translations (Marek, Matej, Martin, Daniel, Joe, Kenneth, Rūdolfs, Andika, Balázs, Piotr, Christian, Мирослав)
- make framerate work for The Imaging Source cameras (Edgar)
- fix exposure setting on Point Grey Blackfly cameras
- added frame rate support for The Imaging Source(TIS) cameras (Edgar)
- gv_interface: strip control character from device id (Csaba)
- gst_plugin: make the plugin more useful for a use inside an application (Edgar)
- gst_plugin: honor do-timestamp property (Csaba)
- arv-tool: fix IntReg display and don't display min/max if they are no specified
- gv_device: don't send packet resend requests when this feature is not available
- gv_device: implement register workaround for schema < 1.1.0
- python: crash fixes (Olivier)
- viewer: fix an issue when aravis buffer row stride is not a multiple of 4
- viewer: improve framerate entry
- viewer: translation update
- compilation warning suppression
- suppress glib deprecation warnings
- add a define for BAYER_GR_12_PACKED pixel format
Stable release.
- camera: add support for BAYER_GB_8 images used by ImageingSource DFK 23G445 cameras (Matthias)
- camera: fix consistency of order of pixel format display names (Jure)
- GV: fix parsing of hexadecimal address/length with 0x prefix in Genicam file URL
- build: fix parallel compilation (make -j)
- library: don't distribute arvconfig.h (Nial bug report)
- viewer: desktop file and application icon
- viewer: rotate and flip button
- viewer: file save notification
- viewer: use autovideosink instead of xvimagesink, for systems without XV extension
- camera: pixel format API improvments (Jure)
- system: disable the fake camera by default (Kai bug report)
- genicam: fix "remaining operands" issue in evaluator (Tom bug report)
- genicam: fix unzipping of genicam data on not supporting unaligned memory access (Nial)
- GV stream: use machine time for buffer timestamp if GevTimestampTickFrequency register does not exist
- gstreamer plugin: add auto gain, auto exposure, x and y offset properties (Philipp)
API breaks:
arv_stream_timed_pop_buffer is now arv_stream_timeout_pop_buffer arv_camera_(get/set)_gain use a double value for gain arv_camera_get_gain_bounds also use doubles
Changes:
- genicam: preliminary error handling
- viewer: internationalization support
- viewer: widget are now insensitive if feature is not available
- viewer: fix gtk requirement
- viewer: add optional support for gtk3
- viewer: fix flicker on window resize
- camera: use Gain feature instead of GainRaw when available
- genicam: fix formula evaluation when they contain entities
This release hopefufly adds support for cameras depending on IntSwissKnife for the computation of register addresses, like JAI cameras. It also allows to manually tweak the PacketSize parameter.
- genicam: add support for SwissKnife in register address.
- GV device: don't force the packet size.
- GV device: export interface and device IP addresses (Luca).
- tests: more unit tests.
- build: don't require a C++ compiler by default.
API warning: arv_stream_pop_buffer is now blocking. Use arv_stream_try_pop_buffer for non blocking behaviour.
- genicam: support for StructReg StructEntry
- stream: new pop_buffer / try_pop_buffer functions, consistent with glib async_queue API.
- camera: new get/set_trigger_source functions.
- tool: support for wildcard in camera name.
- tool: ability to perform the same command on several cameras.
- interface: new get_device_physical_id function.
- genicam: rewrite on top of a DOM API.
- viewer: add a snapshot button.
- documentation: more information on GigE Vision protocol.
- all: memory leak fixes.
This release should fix the lost of connection, at least better than the last release. It also allows to instantiate a GigE Vision device using its MAC address.
- device: new "control-lost" signal.
- GV device: allow use of MAC address for device instantiation.
- GV device: retry gvcp command if wrong packet is received.
- GV device: try harder to get control register value in heartbeat thread.
- GVCP: don't use 0 for packet counter value.
This release fixes the lost of the connection to the device after about 65600 seconds.
- GV device: don't compare guint32 and guint16.
In this release, arv-show-devices is renamed to arv-tool, and gain the capability to read/write and list device features.
- Build: fix headers for C++ compatibility (Andre Gaschler)
- Genicam: partly implement isAvailable and isImplemented.
More work on GV stream reception thread.
- GV Stream: handle error GVSP packets.
- GV Stream: always set packet size.
- GV Stream: check for control access before creating stream object.
- GV Stream: check the number of available stream channels.
- GVCP: more sanity checks on ack packets.
- GV Device: reliably check for control access.
- Fake GV Camera: make it work with viewer.
- Debug: allow different debug levels for each debug category.
Work on GV stream reception reliability, with improved packet resend mechanism.
- Camera: software trigger support
- GV Stream: rewrite of the receiving thread
- Introspection: annotation fixes
- Build: make stable release parallel installable
Release mostly focused on color support improvements.
- GstAravis: switch to negociated width, height, framerate and pixel format
- Evaluator: fix support of variable name containing digits
- Buffer: add a per buffer user data
- Stream: add a timed buffer pop function
- Stream: switch to gobject properties for packet resend and socket buffer size
- Camera: more bounds functions
- Viewer: support for some color pixel formats
- Viewer: support for auto gain and auto exposure
- Utils: Genicam xml data dump capability added to arv-show-devices
- Camera API: Fix exposure setting for Ace Basler cameras
- Genicam: Fix caching of registers on read
- Simple viewer based on ArvCamera API (requires gtk and gstreamer)
- Add a "new-buffer" signal to ArvStream
- Fix stream IP address setting for JAI Pulnix cameras (Tom Cobb)
- Fix use or Aravis from a C++ application (Tom Cobb)
- Fix division of integers in ArvEvaluator when asked for float result (Tom Cobb)
- Add an API for retrieving the genicam data (Tom Cobb)
- Fix minimum offset of ROI (Tom Cobb)
- Fake camera can now simulate gain and exposure setting
- Add exposure and gain settings to the gstreamer source element
- fix exposure setting in ArvCamera for Basler cameras
- gather running statistics for the GV devices
- fix GV stream fixed buffer size
- add a new arv-show-devices utility
- make API more consistent with the Genicam standard
- Basic ethernet camera simulator
- Allow detection of ethernet cameras on lo, for the GV camera simulator
- Fix in gvcp support code
- More unit tests
- Add support for GENICAM element
- Memory leak fixes
- Record statistics on buffer reception times
- Improve compilation on 64 bit platforms
Initial release.