Picamera2

Added

* Add an example showing how to forward images to other processes using zero-copy.
* Add a context manager method for capturing requests, e.g. `with picam2.captured_request() as r:`
* Encoders can skip frames, e.g. run at half the rate of the camera.

Changed

* Configuration alignment fixed on Pi 5.
* Improve support for displays without alpha blending.

Added

* Yolov5s TensorFlow example.
* MJPEG server example with 90/270 degree rotation.

Changed

* File descriptor leak fixed when closing DmaAllocator.
* EGL memory leak fied.
* Missing R16 mono raw format added for Pi 5.
* Minor LibavH264Encoder improvements.

Added

* Pi 5 users can now request 48-bit RGB outputs (where each R, G and B sample is 16-bit).
* Support for h.264 codec profiles.
* DNG files can be written to ioBytes objects.
* Persistent allocators added.
* Timeout support waiting for asynchronous requests to complete.

Changed

* FFmpeg thread queue size increased, to suppress warnings and improve behaviour.
* Quality argument is respected properly by start_encoder().

Added

Changed

* A memory leak when using the new DmaAllocator has been fixed, allowing camera mode switches to work indefinitely again.

Added

* capture_request() allows you to specify a "no earlier than" timestamp.
* A callback is available in case the FfmpegOutput terminates unexpectedly.

Changed

* Workaround for V4L2 encoders getting stuck when trying to flush output.
* Fix for PIL version 10.
* Configuration objects work better with the new SensorConfiguration e.g. "picam2.still_configuration.sensor.output_size = (2028, 1520)"
* Updates for the latest libcamera.

Added

Changed

* Add picamera2.allocators package.