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119 commits

Author SHA1 Message Date
Thibault Saunier
785e006de9 textoverlay: unpremultiply text image 
The GstVideoOverlayComposition only supports unpremultiplied ARGB
(for now anyway, support for pre-multiplied alpha is planned.)
 2011-12-05 15:37:04 +00:00
Thibault Saunier
cbcf1e0b46 textoverlay: Attach OverlayComposition to buffers when needed 
Add video/x-surface support in the caps
We should then attach it whenever the sink supports it, but this
is working for the time being
 2011-12-05 15:37:04 +00:00
Thibault Saunier
2a687b6dfb textoverlay: Make the text_image data a buffer 
This way we won't free data that would be attached to some buffer.
 2011-12-05 15:37:03 +00:00
Thibault Saunier
a741c0cf11 textoverlay: Sync the caps with the new supported formats 
Thanks to the use of the new video composition library, we gain support to
more colospaces and formats, let's state it.
 2011-12-05 15:37:03 +00:00
Thibault Saunier
a018c187a0 textoverlay: Make use of the new video blending utility 2011-12-05 15:37:03 +00:00
Tim-Philipp Müller
0d98aa25b8 Work around deprecated thread API in glib master 
Add private replacements for deprecated functions such as
g_mutex_new(), g_mutex_free(), g_cond_new() etc., mostly
to avoid the deprecation warnings. We'll change these
over to the new API once we depend on glib >= 2.32.

Replace g_thread_create() with g_thread_try_new().
 2011-12-04 17:16:30 +00:00
Vincent Penquerc'h
96374054ac various: fix pad template leaks 
https://bugzilla.gnome.org/show_bug.cgi?id=662664
 2011-11-28 13:09:02 +00:00
Vincent Penquerc'h
51426a3b2d textoverlay: continue processing text when silent 
This prevents playback wegding when text buffers are
left to pile up.

https://bugzilla.gnome.org/show_bug.cgi?id=662829
 2011-11-08 12:02:49 +00:00
Tim-Philipp Müller
d7fc45f42e docs: fix up some Since: markers 2011-11-07 23:05:44 +00:00
Vincent Penquerc'h
15dc839467 textoverlay: add YV12 support 
Basically the same as I420, just with chroma planes swapped.

https://bugzilla.gnome.org/show_bug.cgi?id=660604
 2011-10-01 19:18:02 +01:00
Sebastian Dröge
d094913a61 textoverlay: Protect against accessing the NULL parent of the pads during shutdown 
Fixes bug #658901.
 2011-09-19 09:34:08 +02:00
Vincent Penquerc'h
7d3858a14d textoverlay: fix text buffer leak 
Make sure to always unref the input text buffer.

Reported by bcxa.sz@gmail.com.

https://bugzilla.gnome.org/show_bug.cgi?id=657049
 2011-08-22 10:48:06 +01:00
Stefan Sauer
2db389f775 textoverlay: improve the example 
Mentioned that this is not ment to be used with subtitles and suggest alternatives.
 2011-07-25 12:04:48 +02:00
Stefan Sauer
5d5ab90e51 textoverlay: add example for feeding from stdin 2011-07-23 14:22:03 +02:00
Stefan Sauer
0667b1adf5 textoverlay: keep untimestamped textbuffer until next one 
Instead of discarding untimestamped text-buffers immeditely after rendering,
keep them until we receive the next text buffer.
Fixes #654959
 2011-07-23 14:04:14 +02:00
Lane Brooks
5488877090 textoverlay: added 'outline-color' parameter to control whether text gets a shadow 2011-05-26 11:05:43 +02:00
Lane Brooks
c8a3f63909 textoverlay: added 'shadow' option to control whether text gets a shadow 2011-05-26 11:03:23 +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
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
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
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
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