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videometa: Add docs to the region of interest meta functions

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This commit is contained in:
Sebastian Dröge 2013-07-17 11:42:48 +02:00
parent 7d16f95730
commit 97fc9b5f86
1 changed files with 41 additions and 0 deletions
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41
gst-libs/gst/video/gstvideometa.c
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@ -624,6 +624,19 @@ gst_video_region_of_interest_meta_get_info (void)
return meta_info; return meta_info;
} }
/**
* gst_buffer_get_video_region_of_interest_meta_id:
* @buffer: a #GstBuffer
* @id: a metadata id
*
* Find the #GstVideoRegionOfInterestMeta on @buffer with the given @id.
*
* Buffers can contain multiple #GstVideoRegionOfInterestMeta metadata items if
* multiple regions of interests are marked on a frame.
*
* Returns: the #GstVideoeRegionOfInterestMeta with @id or %NULL when there is
* no such metadata on @buffer.
*/
GstVideoRegionOfInterestMeta * GstVideoRegionOfInterestMeta *
gst_buffer_get_video_region_of_interest_meta_id (GstBuffer * buffer, gint id) gst_buffer_get_video_region_of_interest_meta_id (GstBuffer * buffer, gint id)
{ {
@ -642,6 +655,20 @@ gst_buffer_get_video_region_of_interest_meta_id (GstBuffer * buffer, gint id)
return NULL; return NULL;
} }
/**
* gst_buffer_add_video_region_of_interest_meta:
* @buffer: a #GstBuffer
* @roi_type: Type of the region of interest (e.g. "face")
* @x: X position
* @y: Y position
* @w: width
* @h: height
*
* Attaches #GstVideoRegionOfInterestMeta metadata to @buffer with the given
* parameters.
*
* Returns: the #GstVideoRegionOfInterestMeta on @buffer.
*/
GstVideoRegionOfInterestMeta * GstVideoRegionOfInterestMeta *
gst_buffer_add_video_region_of_interest_meta (GstBuffer * buffer, gst_buffer_add_video_region_of_interest_meta (GstBuffer * buffer,
const gchar * roi_type, guint x, guint y, guint w, guint h) const gchar * roi_type, guint x, guint y, guint w, guint h)
@ -650,6 +677,20 @@ gst_buffer_add_video_region_of_interest_meta (GstBuffer * buffer,
g_quark_from_string (roi_type), x, y, w, h); g_quark_from_string (roi_type), x, y, w, h);
} }
/**
* gst_buffer_add_video_region_of_interest_meta_id:
* @buffer: a #GstBuffer
* @roi_type: Type of the region of interest (e.g. "face")
* @x: X position
* @y: Y position
* @w: width
* @h: height
*
* Attaches #GstVideoRegionOfInterestMeta metadata to @buffer with the given
* parameters.
*
* Returns: the #GstVideoRegionOfInterestMeta on @buffer.
*/
GstVideoRegionOfInterestMeta * GstVideoRegionOfInterestMeta *
gst_buffer_add_video_region_of_interest_meta_id (GstBuffer * buffer, gst_buffer_add_video_region_of_interest_meta_id (GstBuffer * buffer,
GQuark roi_type, guint x, guint y, guint w, guint h) GQuark roi_type, guint x, guint y, guint w, guint h)