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uvc-gadget v0.4.0

This release is primarily composed of bugfixes, plus some tidying and
improvements to uvc-gadget.sh. The improvements add an example of the
configuration of a single Extension Unit in configfs, support for
which is making its way upstream currently.

Bugfixes:

 - Fixed a compile time warning
 - Fixed an issue in libcamera-source that resulted in high cpu usage
 - Fixed a potential buffer overflow in the jpg and slideshow sources

Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>

uvc-gadget v0.3.0

This release brings in some new support and features for UVC Gadget to
operate with libcamera based cameras.

 - libcamera sources are now supported
 - Support for encoded streams
 - Software based MJPEG encoding is managed by the libcamera source only.

Please be aware, that as part of this release, the existing V4L2 source
option '-c' is renamed to '-d'.

The new libcamera source is now supported by the option '-c' and can be
selected by camera index, or explictly choosing the camera based on it's
libcamera id.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

uvc-gadget v0.2.0

This release extends UVC Gadget with the ability to provide a
'slideshow' source.

This can assist in the testing of performance and capabilities of a UVC
Gadget based device, by providing a known set of data frames and
configurations to stream to the host.

Further more this release contains:
 - lib/timer: Add timer infrastructure
 - lib/jpg-source: Constrain fps

These allow sources with out a controlling device to be configured to
deliver at the rate requested by the host.

Finally, the Makefile 'helper' is fixed to correctly call the install
target in ninja.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

uvc-gadget v0.1.0

This release culminates being able to integrate many historical changes
and updates that we had pending for quite some time along with some
bugfixes and clean ups.

Key new features already added to this release include:

- SuperSpeed descriptor support
- MJPEG support fixes
- Update to support new gadget locations
- Conversion to Meson build infrastructure
- A new test pattern source generator
- Support for JPEG sources
- Improved logging
- Commencement of control support

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>