Commit graph

33 commits

Author SHA1 Message Date
Seungha Yang
946e00f581 videometa: Fix documentation
Fix gst_video_region_of_interest_meta_add_params to
gst_video_region_of_interest_meta_add_param and add newline to be
more readable.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/722>
2020-06-24 02:02:50 +09:00
Matthew Waters
a777fe2628 videometa: constify tc argument to add_video_time_meta()
We don't modify the argument.
2020-03-16 15:34:02 +11:00
Guillaume Desmottes
e5c9a921ad videometa: document how the meta can be used to negotiate buffers layout
I'm going to use this new API in gst-omx so an encoder can request
v4l2src to produce buffers matching the encoder stride and slice heights
preventing copies of incoming buffers.
2019-11-04 12:59:31 +00:00
Guillaume Desmottes
75680e5d34 videometa: add alignment field
By adding this field, buffer producers can now explicitly set the exact
geometry of planes, allowing users to easily know the padded size and
height of each plane.

GstVideoMeta is always heap allocated by GStreamer itself so we can
safely extend it.
2019-11-02 13:05:43 +01:00
Tim-Philipp Müller
ae429de8f6 video: GST_EXPORT -> GST_VIDEO_API
We need different export decorators for the different libs.
For now no actual change though, just rename before the release,
and add prelude headers to define the new decorator to GST_EXPORT.
2018-03-13 12:16:42 +00:00
Guillaume Desmottes
f5855d50ad videometa: add support for downstream parameters to ROI meta
The current GstVideoRegionOfInterestMeta API allows elements to detect
and name ROI but doesn't tell anything about how this information is
meant to be consumed by downstream elements.
Typically, encoders may want to tweak their encoding settings for a
given ROI to increase or decrease their quality.
Each encoder has its own set of settings so that's not something that
can be standardized.

This patch adds encoder-specific parameters to the meta which can be
used to configure the encoding of a specific ROI.

A typical use case would be: source ! roi-detector ! encoder
with a buffer probe on the encoder sink pad set by the application.
Thanks to the probe the application will be able to tell to the encoder
how this specific region should be encoded.

Users could also develop their specific roi detectors meant to be used with a
specific encoder and directly putting the encoder parameters when
detecting the ROI.

https://bugzilla.gnome.org/show_bug.cgi?id=793338
2018-02-21 12:30:10 -05:00
Tim-Philipp Müller
820c34740f video: mark symbols explicitly for export with GST_EXPORT 2017-05-16 15:23:12 +01:00
Thibault Saunier
099ac9faf2 docs: Convert gtkdoc comments to markdown
Modernizing the documentation, making it simpler to read an
modify and allowing us to possibly switch to hotdoc in the
future.
2017-03-10 18:19:17 -03:00
Vivia Nikolaidou
8d8384f20a videometa: Added video time code meta
It attaches a GstVideoTimeCodeMeta (SMPTE timecode) as metadata to a buffer.

https://bugzilla.gnome.org/show_bug.cgi?id=766419
2016-08-04 18:59:48 +03:00
Jan Schmidt
d18aa5b741 video: Make gst_buffer_get_video_meta() a real function, Return lowest id
Instead of returning the first video meta found on a buffer, return the
one with the lowest id (which is usually the same thing, except on
multi-view buffers)
2015-05-30 01:11:47 +10:00
Jan Schmidt
2a37534129 video: Various simple docs fixes 2014-08-15 01:08:12 +10:00
Matthew Waters
2e84acce58 videometa: add GstVideoGLTextureUploadMeta buffer pool option
allows configuration of whether GstVideoGLTextureUploadMeta is
added to buffers resulting from a buffer pool.  This is sperate
to the caps feature in that an element may want to add the upload
meta itself rather than allowing the buffer pool to.

https://bugzilla.gnome.org/show_bug.cgi?id=712798
2013-11-26 14:04:38 +01:00
Wim Taymans
d3641943b3 docs: fix some doc blocks 2013-09-09 15:52:05 +02:00
Rico Tzschichholz
cb3e2fd218 videometa: fix syntax error 2013-08-21 11:20:28 +01:00
Sebastian Dröge
95605a79c9 videometa: Add to the docs and make function names more consistent with others 2013-07-16 10:09:27 +02:00
Miguel Casas-Sanchez
38837bd468 videometa: Add Region Of Interest meta
https://bugzilla.gnome.org/show_bug.cgi?id=704070
2013-07-16 10:04:00 +02:00
Wim Taymans
6da245962d videometa: fix header formatting 2013-07-12 09:37:51 +02:00
Wim Taymans
38317e3f09 videometa: fix docs 2013-05-27 11:05:06 +02:00
Sebastian Dröge
74f6376c53 videometa: Extend GstVideoGLTextureUploadMeta
https://bugzilla.gnome.org/show_bug.cgi?id=697112
2013-04-17 10:50:05 +02:00
Sebastian Dröge
f14c4bbbd7 videometa: Add caps feature #defines for video and GL texture upload meta 2013-04-01 10:22:04 +02:00
Sebastian Dröge
c5d5221cb2 videometa: Add documentation for GstVideoGLTextureUploadMeta 2013-03-29 16:56:25 +01:00
Sebastian Dröge
3d1322f08e videometa: Implement copying of GstVideoGLTextureUploadMeta 2013-03-29 16:37:01 +01:00
Sebastian Dröge
5f79a8cb93 videometa: API: Add GstVideoGLTextureUploadMeta
This allows elements to specify a function to upload
a buffer content to a specific OpenGL texture ID. It
could be used by the vaapi elements to provide a way
for eglglessink or WebKit to upload a VA surface to
an GL texture without the respective sinks knowing
anything about VA.
2013-03-29 16:07:23 +01:00
Tim-Philipp Müller
5f59b4f7ee Fix FSF address
https://bugzilla.gnome.org/show_bug.cgi?id=687520
2012-11-03 23:05:09 +00:00
Wim Taymans
04a2610444 video: improve frame_flags
Rename the frame_flags to flags. Because they are flags on the frame object it
does not need the redundant frame_ prefix.
Change the order of the metadata constructor so that the flags come before the
format and dimension arguments.
2012-04-19 14:14:35 +02:00
Sebastian Dröge
91ffe7dd5e video: Clean up interlaced flags and enums
There's a new GstVideoFrameFlags enum now that contains the frame
specific flags only. GstVideoFlags does not contain the TFF/TFF/ONEFIELD
flags anymore because these are strictly frame specific.

Also add fallback to parse these fields from the GstBufferFlags in
gst_video_frame_map() if there's no GstVideoMeta attached to the buffer.
2012-04-19 12:30:57 +02:00
Wim Taymans
4da57f08a1 videometa: make video metatransform
Make more generic video meta transform data that can be used for many video
transformations later.
2012-03-06 12:52:01 +01:00
Wim Taymans
337eed6e91 videometa: add videoscale metadata transform 2012-03-02 13:11:36 +01:00
Wim Taymans
502c12f827 update for metadata API changes 2012-02-29 17:25:10 +01:00
Wim Taymans
e32e8f6c52 video: Improve video frame map/unmap
Install defaul map/unmap function on the metadata and really call the functions
instead of always calling a default implementation.
Rework some bits so that we don't have to mess with the GstMapInfo information
(adding the offset), instead pass the adjusted data pointer from the map function.
2012-02-23 16:50:28 +01:00
Wim Taymans
fcdc385aa1 port to new map API 2012-01-25 12:30:53 +01:00
Wim Taymans
5872bcc33a Update for memory API changes 2012-01-19 12:15:18 +01:00
Wim Taymans
e067e67923 rename meta* -> *meta 2011-11-02 09:04:27 +01:00
Renamed from gst-libs/gst/video/gstmetavideo.h (Browse further)