gstreamer-rs/gstreamer-video/CHANGELOG.md

Changelog

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

The format is based on Keep a Changelog and this project adheres to Semantic Versioning, specifically the variant used by Rust.

0.15.2 - 2020-01-30

Fixed

• Fix another race condition in the gst::Bus Stream that could cause it to not wake up although a message is available.

0.15.1 - 2020-01-23

Added

• Use static inner lifetime for VideoCodecState<Readable> so that it can be stored safely on the heap.
• Getters/setters for BinFlags on gst::Bin.
• gst::Caps::builder_full() for building caps with multiple structures conveniently.
• gst::Element::call_async_future() for asynchronously spawning a closure and returning a Future for awaiting its return value.

Fixed

• Various clippy warnings.
• Getters/setters for PadFlags on gst::Pad now provide the correct behaviour.
• Take mutex before popping messages in the gst::Bus Stream to close a small race condition that could cause it to not be woken up.
• gst::ChildProxy implementers do not have to provide child_added() and child_removed() functions anymore but these are optional now.
• Manually implement Debug impls for various generic types where to Debug impl should not depend on their type parameters also implementing Debug.

0.15.0 - 2019-12-18

Added

• StructureRef::get_optional() for returning None if the field does not exist instead of Err
• Bindings for gstreamer-rtp library, mostly RTPBuffer
• Support for writing Preset, TagSetter, Clock, SystemClock subclasses
• Bindings for Typefind::get_length()
• Bindings for BaseSrcImpl::get_times()
• Bindings (incl. subclassing) for AudioSink and AudioSrc
• Missing Send/Sync impl for various types

Fixed

• Cleanup of cargo features/dependencies to improve build times
• Serde serialization with optional values. Attention: This changes the format of the serialization!
• VideoEncoder/VideoDecoder proxy_getcaps() can't return None
• Use non-panicking UTF8 conversion in log handler. We don't want to panic just because some C code printed a non-UTF8 string
• Re-rexport all traits from the crate level and also ensure that all traits are actually included in the preludes
• Actually export is_video_overlay_prepare_window_handle_message() function
• Use FnMut for the appsink callbacks instead of Fn
• Promise change function returns the actual reply to the promise now instead of just passing the promise itself
• Memory leak in Iterator::filter()
• BinImpl::add() takes ownership of floating references
• DeviceImpl::create_element() preserves floating flag
• BinImpl::remove() takes a strong reference of the element now as the last reference might be owned by the bin and otherwise we would potentially have a use-after-free afterwards
• BaseParseFrame and VideoCodecFrame take a &mut self now for various functions that actually change the frame

Changed

• Minimum supported Rust version is 1.39
• Allow passing None to VideoEncoder::finish_frame()
• Various to_string() methods were moved into the Display trait impl and for some types to_str() was added to return a &'static str
• .gir files were updated to 1.16.2 release
• Sample constructor uses the builder pattern now
• VideoMeta::add_full() is simplified and requires parameters
• BasetransformImpl::set_caps() returns a Result instead of bool
• SDP data type getters for strings return an Option now as these can be None in practice although not allowed by the SDP spec
• Various functions returning Options were changed to return Results if None actually signalled an error instead of just a missing value

Removed

• "subclassing" and "futures" cargo features. These are enabled by default now

[0.14.5] - 2019-09-17

Added

• Support subclassing of gst::Device, gst::DeviceProvider, gst_audio::AudioDecoder and ::AudioEncoder
• Support for Element::set_clock and ::provide_clock virtual methods
• ElementClass::add_metadata was added
• gst_video::VideoDecoder and ::VideoEncoder got support for get_caps, negotiate, src/sink_query/event and the drain virtual methods
• Element::num_pads, ::num_src_pads and ::num_sink_pads functions
• gst_video::VideoDecoder and ::VideoEncoder got get_allocator bindings
• gst::Iterator implements IntoIterator now for providing std::iter::Iterator<Item=<Result<T, IteratorError>> adapter
• Error macros for audio/video decoder subclasses to handle decoding errors more gracefully and only actually error out after many consecutive errors

Fixed

• Macros now also work in Rust 2018 edition without #[macro_use] but explicit imports
• The log handler unit test runs reliable in parallel with other tests
• Manually implement Debug for gst::Iterator to allow it for any T instead of T: Debug
• Device::create_element has correct reference count handling now
• Return NotNegotiated in the video codec base classes if setting the output state fails instead of Error

[0.14.4] - 2019-08-14

Added

• Bindings for adding/removing custom log functions
• Bindings for calculate_linear_regression()
• Constants for base class custom flow returns

Fixed

• Ownership of pad in Element::release_pad() virtual method implementations

[0.14.3] - 2019-07-16

Added

• Buffer::unset_flags() for unsetting specific buffer flags
• VideoBufferFlags flags type and VideoBufferExt::set_video_flags(), unset_video_flags() and get_video_flags() for working with video buffer flags from safe code.

Fixed

• Setting buffer flags does not override arbitrary other flags anymore but only sets the flags in question. This is necessary to not override extension buffer flags like gst_video::VideoBufferFlags.

0.14.2 - 2019-07-15

Added

• Support for ReferenceTimestampMeta

0.14.1 - 2019-07-06

Added

• Various new WebRTC enum types from 1.14.1/1.16.0

Fixed

• Correctly generate interlaced VideoInfo by using gst_video_info_set_interlaced_format() instead of the generic function.
• serde serialization unit tests for gst::format succeed again now.

Changed

• Debug impls for VideoFormatInfo and AudioFormatInfo now print all the details of the format instead of only the name, and the Debug impls for VideoInfo and AudioInfo also print the format now.

0.14.0 - 2019-06-24

Added

• Bindings for GLSyncMeta.
• Bindings for setting/getting TagScope on a TagList
• Bindings for GLDisplayWayland and GLDisplayX11 in addition to the already existing GLDisplayEGL
• Bindings for Bus::pop_filtered() and related functions
• Bindings for getting/setting Object, Element, Bin, Pipeline and Plugin flags
• Bindings for VideoCaptionMeta
• Debug impl of Buffer now also shows the metas of the buffers
• Expose flow return in PadProbeInfo for overriding the return value
• Bindings for VideoDecoder and VideoEncoder, including subclassing support
• Bindings for Memory, Allocator and VideoBufferPool
• Bindings for VideoFormatInfo::pack and ::unpack for format conversion
• Bindings for BaseParse, including subclassing support
• Various new arithmetic operation impls for fractions, formatted values and ClockTime
• Bindings for VideoInfo::align()

Changed

• The SDPMessage and SDPMedia bindings were completely rewritten as they were broken before and caused crashes in various usages. As part of this there's also some more convenience API available on these types, like iterators for example, and API to modify the SDPMedia contained in a SDPMessage.
• Update to GStreamer 1.16.
• Regenerate with latest gir.
• Run all autogenerated code through rustfmt after generation too.
• Updated to latest versions of GLib/GIO/etc crates.
• Updated to futures 0.3 / std::future
• ProxyPad default functions moved to an extension trait instead of plain functions on ProxyPad, making them more in sync with the default Pad functions
• GStreamer plugins are now exporting the new 1.14+ plugin symbols if they were configured for GStreamer 1.14+
• Arithmetic operations on formatted values and ClockTime do overflow checks now and replace the result with the NONE value on overflow
• TryFrom/TryInto traits are used in various places now instead of the previous ad-hoc implementations of them.
• Registering element/typefind/device monitor factories requires passing a value of gst::Rank now instead of an arbitrary u32

Fixed

• Use correct type for destroying pad task closure data. This was previously using the wrong type, causing crashes at runtime.
• DeviceAdded/DeviceRemoved message getters are transfer full so we don't need to take an additional reference that would be leaked.
• AppSink callbacks are correctly marked as Send instead of Send+Sync, allowing a wider range of closures to be used for them.
• Handle PadProbeReturn::Handled return values from pad probes more correctly.
• ToOwned::to_owned() on miniobjects has to create copies instead of only increasing the reference count. Otherwise it was possible to create multiple mutable and immutable references to the same object at the same time.
• Various functions take references to owned miniobjects instead of borrowed references as it was otherwise possible to create multiple mutable or immutable references to the same object at the same time.
• URIHandler::set_uri does not accept None anymore as this is not allowed by the C function.
• Comparisons and addition of TypeFindProbability and Rank work correctly now
• Various Display implementations were fixed to not cause a stack overflow due to infinite recursion anymore
• Various ::to_string() functions don't take ownership of C strings anymore that they do not own, which caused double frees before

Removed

• MIKEY related bindings from the SDP library. The bindings were broken and until someone needs them these are not available anymore.

0.13.0 - 2019-02-22

Added

• Subclassing infrastructure was moved directly into the bindings, making the gst-plugin crate deprecated. This involves many API changes but generally cleans up code and makes it more flexible. Take a look at the gst-plugins-rs crate for various examples.
• Bindings for GStreamer GL library
• Bindings for CapsFeatures and Meta
• Bindings for ParentBufferMeta, VideoMetaandVideoOverlayCompositionMeta`
• Bindings for VideoOverlayComposition and VideoOverlayRectangle
• Bindings for VideoTimeCode
• Bindings for NetAddressMeta
• Bindings for registering custom tags
• UniqueFlowCombiner and UniqueAdapter wrappers that make use of the Rust compile-time mutability checks and expose more API in a safe way, and as a side-effect implement Sync and Send now
• Bus::add_watch_local() and gst_video::convert_frame_async_local() that allows to use a closure that does not implement Send but can only be called from the thread owning the main context.
• More complete bindings for Allocation Query
• pbutils functions for codec descriptions
• TagList::iter() for iterating over all tags while getting a single value per tag. The old ::iter_tag_list() function was renamed to ::iter_generic() and still provides access to each value for a tag
• Bus::iter() and Bus::iter_timed() iterators around the corresponding ::pop*() functions
• Getters for VideoColorimetry to access its fields
• Debug impls for various missing types.
• serde serialization of Value can also handle Buffer now
• Extensive comments to all examples with explanations
• Transmuxing example showing how to use typefind, multiqueue and dynamic pads
• basic-tutorial-12 was ported and added

Changed

• Rust 1.31 is the minimum supported Rust version now
• Update to latest gir code generator and glib bindings
• Functions returning e.g. gst::FlowReturn or other "combined" enums were changed to return split enums like Result<gst::FlowSuccess, gst::FlowError> to allow usage of the standard Rust error handling.
• Various functions and callbacks returning bool or Option<_> were changed to return a Result<_, glib::BoolError> or Result<_, gst::LoggableError> or Result<_, gst::ErrorMessage> for better integration with Rust's error handling infrastructure.
• Some infallible functions returning bool were changed to return ().
• MiniObject subclasses are now newtype wrappers around the underlying GstRc<FooRef> wrapper. This does not change the API in any breaking way for the current usages, but allows MiniObjects to also be implemented in other crates and makes sure rustdoc places the documentation in the right places.
• BinExt extension trait was renamed to GstBinExt to prevent conflicts with gtk::Bin if both are imported
• Buffer::from_slice() can't possible return None

Fixed

• gst::tag::Album is the album tag now instead of artist sortname
• Return 0 for the channel mask corresponding to negative AudioChannelPositions.
• PartialOrd and related traits are implemented via pointer equality on ClockId instead of using the compare function. Two clock ids with the same timestamp are not necessarily the same.
• Various functions that are actually fallible are now returning an Option<_>.
• Various clippy warnings

0.12.2 - 2018-11-26

Fixed

• PTP clock constructor actually creates a PTP instead of NTP clock

Added

• Bindings for GStreamer Editing Services
• Bindings for GStreamer Check testing library
• Bindings for the encoding profile API (encodebin)
• VideoFrame, VideoInfo, AudioInfo, StructureRef implements Send and Sync now
• VideoFrame has a function to get the raw FFI pointer
• From impls from the Error/Success enums to the combined enums like FlowReturn
• Bin-to-dot file functions were added to the Bin trait
• gst_base::Adapter implements SendUnique now

Changed

• All references were updated from GitHub to freedesktop.org GitLab
• Fix various links in the README.md
• Link to the correct location for the documentation
• Remove GitLab badge as that only works with gitlab.com currently

0.12.1 - 2018-09-21

Added

• More complete bindings for the gst_video::VideoOverlay interface, especially gst_video::is_video_overlay_prepare_window_handle_message()

0.12.0 - 2018-09-08

Added

• Bindings for the GStreamer SDP and WebRTC libraries
• Generic API for working with tags that is based on string tag names and glib::Value for the tag values
• Bindings for Aggregator and AggregatorPad
• Bindings for BaseTransform/BaseSrc::get_buffer_pool()
• Optional serde implementations for the basic GStreamer data flow and metadata types

Changed

• Use ptr::NonNull in various places
• Updated to muldiv 0.2, num-rational 0.2
• Bus::create_watch() can't return None
• Remove CallbackGuard as unwinding across FFI boundaries is not undefined behaviour anymore but will directly cause a panic
• Changed from the futures to the futures-preview crate as an optional dependency
• Various Caps operations take a &CapsRef instead of &Caps
• "deep-notify" signal takes the whole ParamSpec as parameter instead of only the signal name
• Some structs were changed from empty struct to empty enums
• Pad probe code does not take an additional reference to the data anymore, potentially passing writable events/buffers into the probe
• ValueExt::compare() is implemented around std::cmp::Ordering now instead of a custom enum that was basically the same

Fixed

• Pad::add_probe() can return None if an IDLE probe was already called and removed in the meantime
• Various compiler and clippy warnings

Removed

• std::Iterator impl for gst::Iterator. It was awkward to use because the gst::Iterator could fail at each iteration

0.11.6 - 2018-08-27

Fixed

• Build with NLL/two-phase borrows
• Explicitly define [bin] section for discoverer example to fix a cargo warning

Added

• Add unsafe gst::deinit() function
• Ord/PartialOrd impls on gst::Seqnum
• Getter for current pad mode
• gst::Pad::sticky_events_foreach() for iterating over all sticky events in a thread-safe way

0.11.5 - 2018-07-24

Fixed

• gst::Bus's sync handler must unref every message if gst::BusSyncReply::Drop is returned, otherwise they are all leaked

0.11.4 - 2018-07-19

Fixed

• gst::Caps::subtract() does not leak its arguments anymore
• gst::Caps::get_structure() gracefully returns None if the index is out of bounds instead of a g_return_val_if_fail()
• gst::Structure::new() has to give away ownership of the info structure but didn't. For 0.11 we internally copy, in 0.12 it will take the info structure by value
• Typefind tests don't fail anymore if the system has typefind factories without caps

Added

• An additional assertion that ensures that miniobjects are actually writable before creating a mutable reference

0.11.3 - 2018-06-08

Added

• gst::Bus::remove_watch() is now available to remove a bus watch again
• fmt::Debug impls for AudioInfo and VideoInfo were added
• fmt::Debug impls for mini objects also print the pointer value now to make it easier to track them in debug logs
• PlayerVisualization has accessors for the name and description fields now, without which there is no sensible way to use them or to set a player visualization

0.11.2 - 2018-05-09

Fixed

• Work-around various floating reference handling changes between 1.12 and 1.14 to be able to run with both versions without memory leaks or other reference count problems. This affects NetTimeProvider, BufferPool, DeviceMonitor, Stream, StreamCollection, and Player, NetClientClock, NetClock, PtpClock which were already previously fixed.

Changed

• Change the appsrc need-data and all appsink callbacks to not require the Sync bound anymore and change from Fn to FnMut. They can only be called from a single thread at a time. This change is only done for the corresponding callbacks, not the signals.

0.11.1 - 2018-04-07

Fixed

• Fix Structure::to_string() to not run into an infinite recursion but call the method on the contained StructureRef instead of on itself

0.11.0 - 2018-03-20

Changed

• Updated everything to GStreamer 1.14.0
• Event, Message and Query types were refactored to improve usability. Especially newly constructed queries allow to directly use the type-specific functions to be used without first creating a view
• VideoFrameRef::copy_to_ref() and ::copy_plane_to_ref() are gone now and the original functions work with refs instead of full frames
• PadProbeId and NotifyIds are not Copy/Clone anymore and are taken by value
• GstPlayer has GstObject as parent class now

Added

• GstPbutils, GstSdp, GstRtsp and GstRtspServer bindings
• GstPromise, GstAudioStreamAlign and various other 1.14 API
• GstVideoFilter and GstBufferPool bindings
• Element::call_async()
• Debug impl For Toc and TocEntry
• Various new examples (RTP FEC, RTSP server, tag usage, ...)

Fixed

• Memory leak in gst_video::convert_sample_async()

0.10.2 - 2018-02-18

Fixed

• Fix building of messages with custom fields for types that don't have a GstStructure

Added

• VideoFrameRef::copy_to_ref() and ::copy_plane_to_ref(), which work with VideoFrameRefs instead of full VideoFrames
• Getters for the BaseSrc/Sink/Transform configured segment
• Document the gstreamer-player-1.0 dependency in the README.md

0.10.1 - 2018-01-03

Fixed

• Don't require &mut self for TagSetterExtManual::add()

Added

• A TagSetter example application
• Bindings for gst_video::convert_sample() and ::convert_sample_async()
• Bindings for gst_video::VideoRectangle
• Debug impl for Sample and ::with_buffer_list() constructor
• A borrowing version of VideoFrame: VideoFrameRef
• Bindings for GstVideoFilter

Changed

• Deprecated Sample::get_info() in favour of ::get_structure()
• Player has gst::Object as another parent class now

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 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. The API of the two is incompatible.