The screen recording wasn't working because of two bad interactions
with Cogl:
- Buffered primitives weren't being flushed out
- Cogl changes the pixel store values away from their default values
Thanks for Jon Nettleton for tracking down the source of the
problems with the recorder.
https://bugzilla.gnome.org/show_bug.cgi?id=598390
Some C library versions have __attribute__((warn_unused_result)) on
fgets(). We really don't care since we are just throwing the data
away, but check the result anyways.
Move the GStreamer initialization from the Javascript code into
shell_recorder_init(). This avoids a dependency on the GStreamer
introspection information and will make it easier to drop the
gir-repository module dependency.
- clutter_actor_get_transformed_position()/size() return floats
- clutter_stage_get_actor_at_pos() takes a pick mode
- ClutterTimeline no longer has a concept of frames
- ClutterUnit is now replaced by float
- cogl_texture_new_from_data() signature changed
http://bugzilla.gnome.org/show_bug.cgi?id=585013
For development and demonstration purposes, it's neat to be able to
record a screencast of gnome-shell without any external setup.
Built-in recording can also give much better quality than is possible
with a generic desktop recording, since we hook right into the paint
loop.
src/shell-recorder.[ch]: A general-purposes object to record a Clutter
stage to a GStreamer stream.
src/shell-recorder-src.[ch]: A simple GStreamer source element (similar
to appsrc in the most recent versions of GStreamer) for injecting
captured data into a GStreamer pipeline.
src/test-recorder.c: Test program that records a simple animation.
configure.ac src/Makefile.am: Add machinery to conditionally build
ShellRecorder.
tools/build/gnome-shell-build-setup.sh: Add gstreamer packages
to the list of required packages for Fedora.
js/ui/main.js: Hook up the recorder to a MetaScreen ::toggle-recording
keybinding.
http://bugzilla.gnome.org/show_bug.cgi?id=575290
