This is required for OpenGL to work nowadays on macOS. Simply running an
CFRunLoop on the main thread is not sufficient.
Thanks to Philippe Normand for testing this on macOS and making sure it
actually compiles and works.
Winit 0.19 uses uninitialized variables which is invalid since Rust
1.48, leading to a runtime panic [1]. Updating to the latest version
resolves these issues but requires significant refactoring since the
event loop now runs entirely within a closure.
[1]: https://github.com/rust-windowing/winit/issues/1811
If EGL and Wayland were both set the Wayland bit of code would never be
build-tested nor used. Now if both are enabled try to acquire a
GLDisplay through both handles before bailing. The methods can still be
tested in isolation by not enabling one or the other feature.
Solves the following warning:
gstreamer-rs/examples/Cargo.toml: unused manifest key: bin.31.features
Enabling features when a single bin is built is not supported, and users
would have to manually select desired features anyway: -wayland cannot
be used in conjunction with -egl thanks to the cfg_if.
The meta contains a Rust String as a label for the buffer. It is added
on buffers passed into an appsrc and retrieved from the buffers provided
by an appsink.
Configure some custom cropping / scaling of a video frame
input to compositor via the converter-config property
and gst_video::VideoConverterConfig API.
The 'failure' crate has been stale for quite some time and better
alternatives has been developed since its introduction. We choose the
'anyhow' and 'derive_more' to replace it.
This code rework the examples to use the new 2018 edition and also
rework the code to avoid using unnecessary 'extern crate' calls.
The 'use extern crate gstreamer as gst', as well as the other gstramer
related crates, were kept, otherwise we'd need to do it on 'Cargo.toml'
but it would make it more difficult to figure out the respective crate
name.
These dependencies require rustc 1.31, which we can't yet use.
Since they are only affecting examples its not a big deal to pin
them to an earlier version.
