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144 commits

Author SHA1 Message Date
Lane Brooks
c8a3f63909 textoverlay: added 'shadow' option to control whether text gets a shadow 2011-05-26 11:03:23 +02:00
Jindrich Makovicka
2ba4a56d74 textrender: Correctly negotiate with downstream instead of just using random caps 
Fixes bug #638897.
 2011-05-26 10:48:05 +02:00
Jindrich Makovicka
c186d400e5 textrender: Add bound checks to not write outside the image area 2011-05-26 10:43:51 +02:00
Jindrich Makovicka
fe533c9995 textrender: Prevent double unref of caps if the caps can't be set on the srcpad 2011-05-26 10:42:46 +02:00
Sebastian Dröge
1312605eac textoverlay: Always hold the class-global pango mutex when using pango API 2011-04-17 14:17:53 +02:00
Sebastian Dröge
d2ce491153 {time,clock}overlay: Hold the class-global pango mutex when changing the pango context 2011-04-17 14:17:52 +02:00
Sebastian Dröge
72b142bfdf {clock,time}overlay: Only set the global pango context options once in class_init 
Instead of doing it over and over again when instantiating a new instance.
 2011-04-17 14:17:52 +02:00
Sebastian Dröge
9ee7398fae pango: Create a new pango context for every subclass 
timeoverlay/clockoverlay are setting some global options
on the context that shouldn't be used for the generic textoverlay.
 2011-04-17 14:17:52 +02:00
Josep Torra
fbc60fc6f4 textoverlay: fix comparison is always false due to limited range of data type 
Perform calculation in a temp var with enough room as there's guarantee that
ret will be able to hold the result for example in _blit_AYUV.
 2011-04-01 15:47:03 +02:00
Sebastian Dröge
026776ca23 textoverlay: Add support for xBGR and RGBx 
Now all RGB variants are supported.
 2011-04-01 10:39:31 +02:00
Lane Brooks
200ee96338 textoverlay: Added support for ARGB and other RGB alpha variants 2011-04-01 10:36:36 +02:00
Lane Brooks
e2150b11ff textoverlay: converted AYUV to use 'A OVER B' alpha compositing 
'A OVER B' compositing is explained at
http://en.wikipedia.org/wiki/Alpha_compositing.

Previously, overlaying text on a transparent background image left the
text overlay also transparent. This pipeline shows such an example:

gst-launch videotestsrc pattern=white ! video/x-raw-yuv,format=\(fourcc\)AYUV ! alpha alpha=0.0 ! textoverlay text=Testing auto-resize=False font-desc=60px ! videomixer ! ffmpegcolorspace ! autovideosink

With this patch, text is composited "OVER" the background image and
thus is visible regardless of the alpha of the background image. The
overlay in the above pipeline works after applying this patch.
 2011-04-01 10:35:08 +02:00
Mart Raudsepp
093a91eec8 textoverlay: Clean up alignment docs a bit and remove horiz top alignment enum 2011-03-16 15:03:51 +00:00
Stefan Kost
9ac74c59db textoverlay: use a class wide mutex to work around pango reentrance issues 
Pango is not reentrant. Use a class wide mutex to protect pange use in
gst_text_overlay_render_pangocairo(). This works reliable in contrast to the
hack in my previous commit.

Fixes Bug #412678
 2011-03-14 11:17:10 +02:00
Stefan Kost
3294ecda7d Revert "textoverlay: add a hack to init the pango engine" 
This reverts commit fee3266056.
 2011-03-14 11:17:10 +02:00
Stefan Kost
1d73ea887d textoverlay: drop trailing whitespaces 2011-03-14 10:43:42 +02:00
Stefan Kost
fee3266056 textoverlay: add a hack to init the pango engine 
Layout a single char to pre-create all resources.
 2011-03-14 10:43:42 +02:00
Lane Brooks
876bf233fb textoverlay: Add support for vertical center alignment 
Fixes bug #639159.
 2011-01-24 19:39:59 +01:00
Tim-Philipp Müller
b6ae695174 textoverlay: make text property controllable too 
Because we can, and because it's the most interesting one
to control really, after xpos/ypos.
 2011-01-06 23:08:34 +00:00
Lane Brooks
e674178331 textoverlay: make some properties controllable 
https://bugzilla.gnome.org/show_bug.cgi?id=638859
 2011-01-06 23:02:23 +00:00
Vincent Penquerc'h
270bac8158 timeoverlay: add missing break 
https://bugzilla.gnome.org/show_bug.cgi?id=637377
 2010-12-16 11:41:02 +01:00
Sebastian Dröge
ca24ece36b textoverlay: Add support for AYUV 2010-09-01 17:52:31 +02:00
Rob Clark
54f4aa28c2 textoverlay: fix Cb/Cr inversion for colored text overlays 
In case of odd values for xpos or ypos, the division by two in CbCr
plane would result in an off-by-one error, which in the case of NV12,
NV21, or UYVY would cause inversion of blue and red colors.  (And
would be not so easily noticed for I420 as it would just cause the
chroma to be offset slightly from the luma.)

This patch also fixes a silly typo from the earlier patch which
added NV12 support that broke UYVY support.
 2010-08-30 22:53:26 +02:00
Sebastian Dröge
faebf174fb textoverlay: Support NV21 too and minor cleanups 2010-08-24 10:12:53 +02:00
Chris Shoemaker
6bd90dc0cc clockoverlay: only rerender text if time string has changed 
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.
 2010-08-24 09:29:33 +02:00
Rob Clark
1b6918709c textoverlay: add NV12 support 
Fixes bug #627768.
 2010-08-24 09:25:55 +02:00
Mark Nauwelaerts
90a79b4c60 textoverlay: configurable text color and position 
Rather than only left, right, top, etc, allow for horizontal and vertical
positioning on a scale from 0 to 1.
Also cater for configuring rendered text color.

Fixes #624920.

API: GstTextOverlay:xpos
API: GstTextOverlay:ypos
API: GstTextOverlay:color
 2010-08-09 09:49:12 +02:00
Benjamin Otte
1471df894a Add -Wformat-nonliteral -Wformat-security 
And fix the resulting compile failures.

I'm sorry about the patch necessary to gstclockoverlay.h but after
talking to Tim we decided we can live with it.
 2010-03-17 12:09:25 +01:00
Olivier Crête
15fb8f9bf7 textoverlay: Ignore zero framerate 
https://bugzilla.gnome.org/show_bug.cgi?id=606163
 2010-01-06 07:49:27 +01:00
Sebastian Dröge
01ca87e785 textoverlay: Only flush downstream on seeks for flushing seeks 2009-12-09 09:47:30 +01:00
Sebastian Dröge
d5205bb0fa textoverlay: Proxy buffer allocation on the video sinkpad to the srcpad 2009-12-09 09:36:26 +01:00
Sebastian Dröge
8393257732 Revert "textoverlay: First draw outline text and then the real text" 
This reverts commit 60aa09d28c.

First drawing the real text and then the outline produces ugly
text in lower resolutions. The outline line width needs to be somehow
changed relative to the resolution. Fixes bug #602924.
 2009-11-26 14:31:55 +01:00
Sebastian Dröge
45cefdefa6 textoverlay: Synchronize video/text based on the running time 
Instead of simply using the buffer timestamps.
 2009-11-06 12:11:21 +01:00
Sebastian Dröge
8ed8d5e414 textoverlay: Clip text buffers to the text segment and reset segments properly 2009-11-06 12:11:21 +01:00
Sebastian Dröge
d941a9f6a6 textoverlay: Put the video segment into the instance struct instead of allocating it separately 2009-11-06 12:11:20 +01:00
Sebastian Dröge
8692174b50 textoverlay: Check if text timestamp/duration is valid before clipping 2009-11-06 12:11:20 +01:00
Sebastian Dröge
60aa09d28c textoverlay: First draw outline text and then the real text 
Improves the output a bit because no parts of the outline are
overwritten again.
 2009-11-03 08:26:37 +01:00
Sebastian Dröge
eb9acba08f textoverlay: Optimize a bit more 
...and add a FIXME for bug #598695 and explain
what we should do once Pango supports user fonts.
 2009-10-22 10:17:31 +02:00
Sebastian Dröge
21ad7547a0 textoverlay: Do shading as first operation 2009-10-22 09:31:34 +02:00
Sebastian Dröge
eccd28d7b0 textoverlay: Only use a single cairo surface for drawing 
... and comment/optimize what is going on here a bit better.
 2009-10-22 09:08:48 +02:00
Tim-Philipp Müller
550b6fa0c1 pango: bump pango requirement to stable version and remove ifdefs 
Bump pango requirement from an ancient development version to an
ancient stable version.
 2009-10-18 13:42:01 +01:00
Sebastian Dröge
7c6c74e4a3 pango: Unpremultiply Cairo's ARGB to match GStreamers ARGB 2009-10-01 11:41:16 +02:00
David Schleef
0e9bc5125a Remove Ronald Bultje from Authors field 
Replaced with "GStreamer maintainers
<gstreamer-devel@lists.sourceforge.net>" or just removed,
depending on the number of other authors.
 2009-08-24 11:37:01 -07:00
Edward Hervey
76044dce6d ext: Remove dead assignments and resulting unused variables. 2009-08-08 15:54:41 +02:00
Sebastian Dröge
6776cb445e textrender: Fix blitting of text over the output buffer and cairo painting 2009-08-06 20:47:33 +02:00
Sebastian Dröge
cc61c9e27e textrender: Fix endianness problems (i.e. make it work again on big endian architectures) 2009-08-06 14:55:07 +02:00
Wim Taymans
caf3d8d480 textoverlay: make buffer writable 
Make the input buffer writable before changing its contents.
 2009-08-06 12:01:10 +02:00
Sebastian Dröge
8212924489 pango: Send queries from the srcpad directly to the video sinkpad 2009-08-06 06:43:39 +02:00
Sebastian Dröge
8c874a7ff3 pango: Add support for xRGB and BGRx formats 2009-08-06 06:43:38 +02:00
Sebastian Dröge
67954aeba3 pango: Fix endianness issues from the pangocairo switch 
cairo's ARGB is in native endianness, i.e. ARGB on big endian architectures
and BGRA on little endian architectures.
 2009-08-06 06:43:37 +02:00