gstreamer-rs/gstreamer-base/CHANGELOG.md

# Changelog
All notable changes to this project will be documented in this file.

The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html),
specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-version-field).

## [0.10.0] - 2017-12-22
### Fixed
- Various clippy warnings
- Memory leak of the tag list in Toc::merge_tags()
- Property getters use Values of the correct type
- Event::get_structure(), Message::get_structure() and
  Query::get_structure() can return None for the structure
- Various other nullability fixes all over the API, changing functions to
  accept Option<> or returning Option<>, or only plain types
- Functions taking paths/filenames now actually take Paths instead of &strs
- Element::remove_pad() is not giving away a new reference to the pad
  anymore, which caused a memory leak of all pads ever removed
- Precision handling in ClockTime's Display impl
- Video/AudioInfo are only Send, not Sync

### Added
- Various enums now also derive useful traits like Copy, Clone and Hash in
  addition to PartialEq, Eq and Debug
- TagList::merge() and insert() for combining tag lists
- EventType gained many useful functions to work with event types and
  a PartialOrd impl to check expected event order of event types where it matters
- MessageRef/EventRef/QueryRef implement ToOwned
- Bindings for Registry and PluginFeature
- Event::set_running_time_offset() for adjusting the offset while events
  pass through the pipeline
- Event/Message GroupIds and Seqnums now have a newtype wrapper around u32
  instead of the plain value, making usage of them slightly more typesafe.
  Also add an "invalid" value for both, as exists in latest GStreamer now.
- FormattedValue, GenericFormattedValue and related types were
  implemented now, which allows more convenient and type-safe usage of
  formatted values (time, bytes, etc)
- Bindings for force-keyunit and still-frame events were added
- MappedBuffer/BufferMap now implement various other useful traits, including
  AsRef<[u8]>, AsMut, Deref, DerefMut, Debug, PartialEq and Eq
- Add VideoMultiviewFramePacking enum, and use it in Player
- Bindings for the GStreamer Net library, including PTP/NTP/network client
  clocks and the GStreamer NetClock provider for network synchronization of
  pipelines
- IteratorError implements std::error:Error
- Plugin::add_dependency() and ::add_dependency_simple() was added
- Rank and TypeFindProbability implement PartialOrd/Ord now
- Bindings for TypeFind, TypeFindFactory and the typefind helpers
- StreamCollection::iter() for iterating over all contained streams
- ErrorMessage type that can be used e.g. in a Result for passing an error
  message from somewhere to upper layers to then be posted on an element the
  same way gst_element_error!() would've done

### Changed
- Sample::new(), TagList::add(), Structure::set() and similar
  functions take the values (ToSendValue impls) by reference instead of value.
  They were not consumed by the function before.
- The Debug impls of various types, including Event/Buffer/Message/Query/Structure
  were improved to print all the fields, similar to what GST_PTR_FORMAT would
  do in C
- Switched to lazy_static 1.0
- Gap event and Duration tag are using ClockTimes now, as well as various
  Player signals
- Segment is now based on a generic type FormattedSegment that can
  take any format (time, bytes, etc) or a GenericFormattedValue for more
  type-safety and convenience. Also functions for "casting" between a generic
  segment and a segment with a specific format exist on this now
- AppSrc and AppSink now have a builder for the callbacks, making it
  unnecessary to always provide all callbacks even if only one is actually
  needed
- Various functions that returned bool for errors, are now returning a Result
- Player configuration is now a custom type with more convenient API
- Player VideoInfo uses a Fraction instead of (u32,u32) for the framerate and
  pixel-aspect-ratio
- VideoFrame API has more consistent API between writable and read-only
  variants
- Buffer::copy_into() was added, and ::copy_region() now takes a
  BufferCopyFlags parameter instead of always using the default flags
- ChildProxy::set_child_property() takes a &ToValue now to follow the API of
  Object::set_property() and improve usability
- Proxy/GhostPad default pad functions use the correct specific pad type now
  instead of a generic Pad
- Bus::add_signal_watch_full() takes a Priority for the priority instead of u32
- Clock::(un)adjust_with_calibration() takes no clock parameter anymore

### Removed
- FormatValue was removed in favour of GenericFormattedValue and the
  connected traits and specific format impls

## [0.9.1] - 2017-11-26
### Fixed
- Export `FlowError`/`FlowSuccess`, `ClockError`/`ClockSuccess`,
  `PadLinkError`/`PadLinkSuccess` too

## [0.9.0] - 2017-11-26
### Added
- Bindings for (outputting to) the GStreamer logging system
- Bindings for the GStreamer base library
- Bindings for all the `Pad` functions to override pad behaviour, and pad task
  functions
- Bindings for `StaticCaps` and `StaticPadTemplate`
- Bindings for `deep-notify` signal on `Object`
- Support for directly creating `Error`/`Warning`/`Info` `Messages` and posting them
  from an element with context information (file, line, module, etc.) similar
  to the C `GST_ELEMENT_ERROR` macro
- Support for setting custom fields in `Messages`/`Events` during construction
- Support for creating Buffers out of anything that is `AsRef<[u8]>` or
  `AsMut<[u8]>`
- Support for using the `Read` trait on `Adapter`
- Functions for getting all sink/src/all pads of an `Element`, and all children
  of a `Bin`
- Builder for `Caps` and `Structures` in addition to the existing functions
- `AppSrc`/`AppSink` implement `BaseSrc`/`BaseSink` and `URIHandler`
- Rust ports of the basic tutorials 1 to 8 from
  https://gstreamer.freedesktop.org/documentation/tutorials/
- "Getting started" and "Installation" sections to the README.md
- "dox" feature for generating documentation for all available configurations

### Fixed
- `StackTraceFlags` are only available since 1.12
- Worked around macOS requiring a `NSRunLoop` running on the main thread in all
  examples and tutorials, to be able to show a window or anything else

### Changed
- `ClockTime` is now a wrapper around `Option<u64>` to handle the
  `CLOCK_TIME_NONE` case better. This wrapper implements all the arithmetic
  and other traits as needed and ensures that no accidential calculations with
  `CLOCK_TIME_NONE` can happen
- "Values with format", like in `Duration`/`Position`/`Convert` queries or
  `Seek` events now return a `FormatValue` type. This contains the actual
  `Format` together with the value and does any required conversions. This
  also makes it harder to accidentially mix e.g. values in bytes and time
- `PadProbeId` does not implement `Clone`/`Copy` anymore
- Property notify watches return a custom type instead of ulong
- `Error`/`Warning`/`Info` `Messages` can only be created with specific kinds of
  `glib::Error` now. Using arbitrary ones does not work
- `Iterator` bindings were completely rewritten and provide the item type as a
  generic type parameter now, greatly simplifying its usage
- All `glib::Values` are now `glib::SendValue` instead, e.g. in `Caps` and
  `Structures`, as their content must be possible to send to different threads
  safely
- `Message::get_src()` can return `None`
- Allow `None` as `Caps` in `AppSrc`/`AppSink`
- Allow everything implementing `Into<Option<&str>>` to be used as a pad name
- Moved `copy()` from `GstRc` directly to `MiniObject`
- Success/Error enums (like `FlowReturn`, `PadLinkReturn`, `StateChangeReturn`) now
  implement an `into_result()` function that splits them into a `Result` with
  the good and bad cases. Also mark them as `#[must_use]` to make it harder to
  accidentially ignore errors.
- Error enums implement the `Error` trait

- Many examples use the `failure` crate for error handling now, cleaning up the
  error handling code quite a bit
- Lots of other code cleanup, compiler/clippy warning cleanup, etc.

## [0.8.2] - 2017-11-11
### Fixed
- Implement StaticType of BufferRef instead of Buffer. Buffer aka
  GstRc<BufferRef> already implements StaticType if BufferRef does, and
  without this it was not possible to use Buffers in GValues.
- Free memory of the appsink/appsrc callbacks with the correct type. It was
  crashing because of using the wrong type before.
- Fix documentation URLs in Cargo.toml.

### Added
- Installation instructions and links to documentation for getting started to
  README.md.

## [0.8.1] - 2017-09-15
### Added
- Implement Send+Sync for Query, Message and Event, and their corresponding
  Ref types.

### Fixed
- Constructor for gst_player::Player now works properly with GStreamer 1.12
  when passing a video renderer or signal dispatcher. There was a reference
  counting bug.
- Instead of returning &'static references from functions, return references
  with a generic, unbound lifetime instead.
  See https://github.com/rust-lang/rust/pull/42417#issue-233404573
- Various "unused external crate" warnings and clippy warnings everywhere.

### Changed
- Remove Cargo.lock from GIT, it's not very useful for library crates.
- Run everything through latest rustfmt-nightly.
- Use while-let (instead of loop and if-let) and CLOCK_TIME_NONE (instead of
  u64::MAX) in the examples.

## [0.8.0] - 2017-08-31

- Initial release of the autogenerated GStreamer bindings. Older versions
  (< 0.8.0) of the bindings can be found [here](https://github.com/arturoc/gstreamer1.0-rs).
  The API of the two is incompatible.

[Unreleased]: https://github.com/sdroege/gstreamer-rs/compare/0.10.0...HEAD
[0.10.0]: https://github.com/sdroege/gstreamer-rs/compare/0.9.1...0.10.0
[0.9.1]: https://github.com/sdroege/gstreamer-rs/compare/0.9.0...0.9.1
[0.9.0]: https://github.com/sdroege/gstreamer-rs/compare/0.8.1...0.9.0
[0.8.2]: https://github.com/sdroege/gstreamer-rs/compare/0.8.1...0.8.2
[0.8.1]: https://github.com/sdroege/gstreamer-rs/compare/0.8.0...0.8.1