gstreamer: Update the TODO list

Update the feature TODO list of libcamerasrc as it hasn't been
updated since its introduction. Following entries have been dropped
since they are supported:

- Implement GstElement::request-new-pad (multi stream)
commit 53a0d80af0 ("gstreamer: Added virtual functions needed to support request pads")

- Add framerate control
- Add framerate negotiation support
commit ccfe0a1af7 ("gstreamer: Provide framerate support for libcamerasrc")

- Add colorimetry support
commit fc9783acc6 ("gstreamer: Provide colorimetry <> ColorSpace mappings")

- Use unique names to select the camera devices
commit 2c93810ec1 ("gst: libcamerasrc: Add camera-name property")
(The property that is set here is fed into CameraManager::get()
eventually, ensuring we can select the camera devices by unique IDs.)

- Add GstVideoMeta support (strides and offsets)
commit 848a3017b8 ("gstreamer: Add GstVideoMeta support")

At the same time, append the buffer importation support entry to
mention the potential usage of memory:DMAbuf, that landed in
gstreamer-1.26.

Signed-off-by: Umang Jain <uajain@igalia.com>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

src/gstreamer/gstlibcamerasrc.cpp

@@ -11,18 +11,12 @@
  *  - Implement GstElement::send_event
  *    + Allowing application to use FLUSH/FLUSH_STOP
  *    + Prevent the main thread from accessing streaming thread
- *  - Implement GstElement::request-new-pad (multi stream)
- *    + Evaluate if a single streaming thread is fine
  *  - Add application driven request (snapshot)
- *  - Add framerate control
  *  - Add buffer importation support
+ *    + Evaluate the feasibility of memory:DMAbuf support
  *
  *  Requires new libcamera API:
- *  - Add framerate negotiation support
- *  - Add colorimetry support
  *  - Add timestamp support
- *  - Use unique names to select the camera devices
- *  - Add GstVideoMeta support (strides and offsets)
  */
 
 #include "gstlibcamerasrc.h"