PangoCairo is thread-safe as long as the context and fontmap are not
shared between threads. Previously each subclass had its own context and
a class mutex for this reason, but apart from hurting performance this
was also not completely safe yet: the same fontmap might've been used by
different classes from different threads as the thread-default fontmap
(at time of class initialization) was used.
This prevents the ugly hack where the text_sink pad template
was only added for textoverlay but not for the subclasses.
Also makes this work with the core change that made
subclasses inherit the templates of their parent class.
The textoverlay element will rerender the text string whenever
overlay sets the 'need_render' flag to TRUE. Previously, we
lazily set the flag to TRUE every time the time string was requested.
Now, we save a copy of the previously given string, and only set
'need_render' to TRUE if the string has changed.
In my tests with a 30fps video stream, and a time string including
a seconds field, this change reduced the CPU usage of the clockoverlay
element from 60% to 5%.
Fixes bug #627780.
POSIX and your local friendly ctime(3) manual entry says that localtime_r isn't
required to set the state variables that define the current timezone. Indeed,
glibc (at least 2.9) doesn't do this for subsequent calls. The effect is that
if the system timezone is changed for a running program between two calls to
gst_clock_overlay_render_time, it won't be noticed. For glibc, changing the
timezone equals /etc/localtime being modified.
Fixes bug #587676.
Original commit message from CVS:
Patch by: Pavel Zeldin <pzeldin at gmail dot com>
* ext/pango/gstclockoverlay.c: (gst_clock_overlay_render_time),
(gst_clock_overlay_class_init), (gst_clock_overlay_finalize),
(gst_clock_overlay_init), (gst_clock_overlay_set_property),
(gst_clock_overlay_get_property):
* ext/pango/gstclockoverlay.h:
API: Add ability to specify format for date/time display by
adding a "time-format" property.
Fixes bug #554879.
Original commit message from CVS:
Patch by: Vincent Torri <vtorri at univ-evry dot fr>
* ext/pango/gstclockoverlay.c: (gst_clock_overlay_render_time):
Fix unused variable warning if HAVE_LOCALTIME_R is undefinied
* gst-libs/gst/riff/riff-media.c: (gst_riff_create_audio_caps):
* gst/audioresample/gstaudioresample.c: (audioresample_do_output):
Use the correct format strings for integer formats.
Original commit message from CVS:
* ext/alsa/gstalsasink.c: (gst_alsasink_open):
Extra log line.
* ext/pango/gstclockoverlay.c: (gst_clock_overlay_init):
* ext/pango/gsttimeoverlay.c: (gst_time_overlay_init):
Use pango_font_description_set_family_static instead of
pango_font_description_set_family to save a string copy (it was
leaking due to the strdup anyway)
* gst/tcp/gsttcpclientsink.c: (gst_tcp_client_sink_finalize):
* gst/tcp/gsttcpclientsrc.c: (gst_tcp_client_src_finalize):
* gst/tcp/gsttcpserversink.c: (gst_tcp_server_sink_finalize):
* gst/tcp/gsttcpserversrc.c: (gst_tcp_server_src_finalize):
Chain up in finalize.
Original commit message from CVS:
* configure.ac:
Check if localtime_r() is available.
* ext/pango/gstclockoverlay.c: (gst_clock_overlay_render_time):
If localtime_r() is not available, fall back to localtime(). Should
fix build on MingW (#393310).
Original commit message from CVS:
2006-02-18 Julien MOUTTE <julien@moutte.net>
* ext/pango/gstclockoverlay.c: (gst_clock_overlay_get_text):
* ext/pango/gsttimeoverlay.c: (gst_time_overlay_get_text): Those
functions are called with lock held.
Original commit message from CVS:
* ext/Makefile.am:
Add $(PANGO_DIR) to SUBDIRS
* ext/pango/gstclockoverlay.c:
* ext/pango/gsttimeoverlay.c:
Fix and improve element descriptions.
