mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-24 17:20:36 +00:00
videometa: Add Region Of Interest meta
https://bugzilla.gnome.org/show_bug.cgi?id=704070
This commit is contained in:
Miguel Casas-Sanchez
Sebastian Dröge
parent
5ee98c146e
commit
38837bd468
2 changed files with 184 additions and 0 deletions
|
|
@ -528,3 +528,143 @@ gst_video_gl_texture_upload_meta_upload (GstVideoGLTextureUploadMeta * meta,
|
|||
|
||||
return meta->upload (meta, texture_id);
|
||||
}
|
||||
|
||||
/* Region of Interest Meta implementation *******************************************/
|
||||
|
||||
GType
|
||||
gst_video_region_of_interest_meta_api_get_type (void)
|
||||
{
|
||||
static volatile GType type;
|
||||
static const gchar *tags[] = { "orientation", " size", NULL };
|
||||
|
||||
if (g_once_init_enter (&type)) {
|
||||
GType _type =
|
||||
gst_meta_api_type_register ("GstVideoRegionOfInterestMetaAPI", tags);
|
||||
GST_INFO ("registering");
|
||||
g_once_init_leave (&type, _type);
|
||||
}
|
||||
return type;
|
||||
}
|
||||
|
||||
|
||||
static gboolean
|
||||
gst_video_region_of_interest_meta_transform (GstBuffer * dest, GstMeta * meta,
|
||||
GstBuffer * buffer, GQuark type, gpointer data)
|
||||
{
|
||||
GstVideoRegionOfInterestMeta *dmeta, *smeta;
|
||||
|
||||
if (GST_META_TRANSFORM_IS_COPY (type)) {
|
||||
smeta = (GstVideoRegionOfInterestMeta *) meta;
|
||||
|
||||
GST_DEBUG ("copy region of interest metadata");
|
||||
dmeta =
|
||||
gst_buffer_add_video_region_of_interest_meta_from_quark (dest,
|
||||
smeta->roi_type, smeta->x, smeta->y, smeta->w, smeta->h);
|
||||
dmeta->id = smeta->id;
|
||||
dmeta->parent_id = smeta->parent_id;
|
||||
} else if (GST_VIDEO_META_TRANSFORM_IS_SCALE (type)) {
|
||||
GstVideoMetaTransform *trans = data;
|
||||
gint ow, oh, nw, nh;
|
||||
ow = GST_VIDEO_INFO_WIDTH (trans->in_info);
|
||||
nw = GST_VIDEO_INFO_WIDTH (trans->out_info);
|
||||
oh = GST_VIDEO_INFO_HEIGHT (trans->in_info);
|
||||
nh = GST_VIDEO_INFO_HEIGHT (trans->out_info);
|
||||
GST_DEBUG ("scaling region of interest metadata %dx%d -> %dx%d", ow, oh, nw,
|
||||
nh);
|
||||
|
||||
smeta = (GstVideoRegionOfInterestMeta *) meta;
|
||||
dmeta =
|
||||
gst_buffer_add_video_region_of_interest_meta_from_quark (dest,
|
||||
smeta->roi_type, (smeta->x * nw) / ow, (smeta->y * nh) / oh,
|
||||
(smeta->w * nw) / ow, (smeta->h * nh) / oh);
|
||||
dmeta->id = smeta->id;
|
||||
dmeta->parent_id = smeta->parent_id;
|
||||
|
||||
GST_DEBUG ("region of interest (id:%d, parent id:%d) offset %dx%d -> %dx%d",
|
||||
smeta->id, smeta->parent_id, smeta->x, smeta->y, dmeta->x, dmeta->y);
|
||||
GST_DEBUG ("region of interest size %dx%d -> %dx%d", smeta->w, smeta->h,
|
||||
dmeta->w, dmeta->h);
|
||||
}
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_video_region_of_interest_meta_init (GstMeta * meta, gpointer params,
|
||||
GstBuffer * buffer)
|
||||
{
|
||||
GstVideoRegionOfInterestMeta *emeta = (GstVideoRegionOfInterestMeta *) meta;
|
||||
emeta->id = 0;
|
||||
emeta->parent_id = 0;
|
||||
emeta->x = emeta->y = emeta->w = emeta->h = 0;
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_video_region_of_interest_meta_free (GstMeta * meta, GstBuffer * buffer)
|
||||
{
|
||||
// nothing to do
|
||||
}
|
||||
|
||||
const GstMetaInfo *
|
||||
gst_video_region_of_interest_meta_get_info (void)
|
||||
{
|
||||
static const GstMetaInfo *meta_info = NULL;
|
||||
|
||||
if (g_once_init_enter (&meta_info)) {
|
||||
const GstMetaInfo *mi =
|
||||
gst_meta_register (GST_VIDEO_REGION_OF_INTEREST_META_API_TYPE,
|
||||
"GstVideoRegionOfInterestMeta",
|
||||
sizeof (GstVideoRegionOfInterestMeta),
|
||||
gst_video_region_of_interest_meta_init,
|
||||
gst_video_region_of_interest_meta_free,
|
||||
gst_video_region_of_interest_meta_transform);
|
||||
g_once_init_leave (&meta_info, mi);
|
||||
}
|
||||
return meta_info;
|
||||
}
|
||||
|
||||
GstVideoRegionOfInterestMeta *
|
||||
gst_buffer_get_video_region_of_interest_meta_id (GstBuffer * buffer, gint id)
|
||||
{
|
||||
gpointer state = NULL;
|
||||
GstMeta *meta;
|
||||
const GstMetaInfo *info = GST_VIDEO_META_INFO;
|
||||
|
||||
while ((meta = gst_buffer_iterate_meta (buffer, &state))) {
|
||||
if (meta->info->api == info->api) {
|
||||
GstVideoRegionOfInterestMeta *vmeta =
|
||||
(GstVideoRegionOfInterestMeta *) meta;
|
||||
if (vmeta->id == id)
|
||||
return vmeta;
|
||||
}
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
GstVideoRegionOfInterestMeta *
|
||||
gst_buffer_add_video_region_of_interest_meta_by_name (GstBuffer * buffer,
|
||||
const gchar * roi_type, guint x, guint y, guint w, guint h)
|
||||
{
|
||||
return gst_buffer_add_video_region_of_interest_meta_from_quark (buffer,
|
||||
g_quark_from_string (roi_type), x, y, w, h);
|
||||
}
|
||||
|
||||
GstVideoRegionOfInterestMeta *
|
||||
gst_buffer_add_video_region_of_interest_meta_from_quark (GstBuffer * buffer,
|
||||
GQuark roi_type, guint x, guint y, guint w, guint h)
|
||||
{
|
||||
GstVideoRegionOfInterestMeta *meta;
|
||||
|
||||
g_return_val_if_fail (GST_IS_BUFFER (buffer), NULL);
|
||||
|
||||
meta = (GstVideoRegionOfInterestMeta *) gst_buffer_add_meta (buffer,
|
||||
GST_VIDEO_REGION_OF_INTEREST_META_INFO, NULL);
|
||||
meta->roi_type = roi_type;
|
||||
meta->x = x;
|
||||
meta->y = y;
|
||||
meta->w = w;
|
||||
meta->h = h;
|
||||
|
||||
return meta;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -232,6 +232,50 @@ GstVideoGLTextureUploadMeta *
|
|||
gboolean gst_video_gl_texture_upload_meta_upload (GstVideoGLTextureUploadMeta *meta,
|
||||
guint texture_id[4]);
|
||||
|
||||
|
||||
/**
|
||||
* GstVideoRegionOfInterestMeta: a Bounding Box describing the inner part of a rectangle inside a video frame.
|
||||
* @meta: parent #GstMeta
|
||||
* @roi_type: GQuark describing the semantic of the Roi (f.i. a face, a pedestrian)
|
||||
* @id: identifier of this particular ROI
|
||||
* @parent_id: identifier of its parent ROI, used f.i. for ROI hierarchisation.
|
||||
* @x: x component of upper-left corner
|
||||
* @y: y component of upper-left corner
|
||||
* @width: bounding box width
|
||||
* @height: bounding box height
|
||||
*
|
||||
* Extra buffer metadata describing an image region of interest
|
||||
*/
|
||||
typedef struct
|
||||
{
|
||||
GstMeta meta;
|
||||
GQuark roi_type;
|
||||
gint id;
|
||||
gint parent_id;
|
||||
|
||||
guint x;
|
||||
guint y;
|
||||
guint w;
|
||||
guint h;
|
||||
}GstVideoRegionOfInterestMeta;;
|
||||
|
||||
GType gst_video_region_of_interest_meta_api_get_type (void);
|
||||
#define GST_VIDEO_REGION_OF_INTEREST_META_API_TYPE (gst_video_region_of_interest_meta_api_get_type())
|
||||
const GstMetaInfo *gst_video_region_of_interest_meta_get_info (void);
|
||||
#define GST_VIDEO_REGION_OF_INTEREST_META_INFO (gst_video_region_of_interest_meta_get_info())
|
||||
|
||||
#define gst_buffer_get_video_region_of_interest_meta(b) \
|
||||
((GstVideoRegionOfInterestMeta*)gst_buffer_get_meta((b),GST_VIDEO_REGION_OF_INTEREST_META_API_TYPE))
|
||||
GstVideoRegionOfInterestMeta *gst_buffer_get_video_region_of_interest_meta_id (GstBuffer *buffer, gint id);
|
||||
GstVideoRegionOfInterestMeta *gst_buffer_add_video_region_of_interest_meta_by_name (GstBuffer * buffer,
|
||||
const gchar * roi_type,
|
||||
guint x, guint y,
|
||||
guint w, guint h);
|
||||
GstVideoRegionOfInterestMeta *gst_buffer_add_video_region_of_interest_meta_from_quark (GstBuffer * buffer,
|
||||
GQuark roi_type,
|
||||
guint x, guint y,
|
||||
guint w, guint h);
|
||||
|
||||
G_END_DECLS
|
||||
|
||||
#endif /* __GST_VIDEO_META_H__ */
|
||||
|
|
|
|||
Loading…
Reference in a new issue