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plugin: sink: allow detecting and/or setting media rotation. Fixes #310

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GstClapperSink now allows to specify the media rotation via the `rotation`
property, which should be of type GstVideoOrientationMethod.

The default behaviour is to detect the media rotation automatically.

Signed-off-by: Eugenio Paolantonio (g7) <me@medesimo.eu>
This commit is contained in:
Eugenio Paolantonio (g7)
2023-04-01 15:08:43 +02:00
parent 4e250c8f2a
commit e275c3017a
2 changed files with 59 additions and 2 deletions
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59
lib/gst/plugin/gstclappersink.c
View File

@@ -28,6 +28,7 @@
#define DEFAULT_PAR_N 1
#define DEFAULT_PAR_D 1
#define DEFAULT_KEEP_LAST_FRAME FALSE
#define DEFAULT_ROTATION GST_VIDEO_ORIENTATION_AUTO
#define WINDOW_CSS_CLASS_NAME "clappersinkwindow"
@@ -38,6 +39,7 @@ enum
PROP_FORCE_ASPECT_RATIO,
PROP_PIXEL_ASPECT_RATIO,
PROP_KEEP_LAST_FRAME,
PROP_ROTATE_METHOD,
PROP_LAST
};
@@ -116,8 +118,9 @@ calculate_stream_coords (GstClapperSink *self, GtkWidget *widget,
GST_CLAPPER_SINK_LOCK (self);
video_width = GST_VIDEO_INFO_WIDTH (&self->v_info);
video_height = GST_VIDEO_INFO_HEIGHT (&self->v_info);
gst_gtk_get_width_height_for_rotation (GST_VIDEO_INFO_WIDTH (&self->v_info),
GST_VIDEO_INFO_HEIGHT (&self->v_info), &video_height, &video_width,
gst_clapper_paintable_get_rotation (self->paintable));
force_aspect_ratio = self->force_aspect_ratio;
GST_CLAPPER_SINK_UNLOCK (self);
@@ -343,6 +346,9 @@ gst_clapper_sink_get_property (GObject *object, guint prop_id,
case PROP_KEEP_LAST_FRAME:
g_value_set_boolean (value, self->keep_last_frame);
break;
case PROP_ROTATE_METHOD:
g_value_set_enum (value, self->rotation_mode);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@@ -385,6 +391,13 @@ gst_clapper_sink_set_property (GObject *object, guint prop_id,
case PROP_KEEP_LAST_FRAME:
self->keep_last_frame = g_value_get_boolean (value);
break;
case PROP_ROTATE_METHOD:
self->rotation_mode = g_value_get_enum (value);
gst_clapper_paintable_set_rotation (self->paintable,
(self->rotation_mode == GST_VIDEO_ORIENTATION_AUTO) ?
self->stream_orientation : self->rotation_mode);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@@ -633,6 +646,32 @@ gst_clapper_sink_stop (GstBaseSink *bsink)
return TRUE;
}
static gboolean
gst_clapper_sink_event (GstBaseSink *bsink, GstEvent *event)
{
GstClapperSink *self = GST_CLAPPER_SINK_CAST (bsink);
GstTagList *taglist;
GstVideoOrientationMethod orientation;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_TAG:
gst_event_parse_tag (event, &taglist);
if (gst_video_orientation_from_tag (taglist, &orientation)) {
GST_CLAPPER_SINK_LOCK (self);
self->stream_orientation = orientation;
if (self->rotation_mode == GST_VIDEO_ORIENTATION_AUTO)
gst_clapper_paintable_set_rotation (self->paintable, orientation);
GST_CLAPPER_SINK_UNLOCK (self);
}
break;
default:
break;
}
return GST_BASE_SINK_CLASS (parent_class)->event (bsink, event);
}
static GstStateChangeReturn
gst_clapper_sink_change_state (GstElement *element, GstStateChange transition)
{
@@ -643,6 +682,14 @@ gst_clapper_sink_change_state (GstElement *element, GstStateChange transition)
gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition)));
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
/* Reset stream_orientation */
GST_CLAPPER_SINK_LOCK (self);
self->stream_orientation = GST_VIDEO_ORIENTATION_IDENTITY;
if (self->rotation_mode == GST_VIDEO_ORIENTATION_AUTO)
gst_clapper_paintable_set_rotation (self->paintable, self->stream_orientation);
GST_CLAPPER_SINK_UNLOCK (self);
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
GST_CLAPPER_SINK_LOCK (self);
if (!self->keep_last_frame && self->importer) {
@@ -794,6 +841,7 @@ gst_clapper_sink_init (GstClapperSink *self)
self->par_n = DEFAULT_PAR_N;
self->par_d = DEFAULT_PAR_D;
self->keep_last_frame = DEFAULT_KEEP_LAST_FRAME;
self->rotation_mode = DEFAULT_ROTATION;
g_mutex_init (&self->lock);
gst_video_info_init (&self->v_info);
@@ -869,6 +917,12 @@ gst_clapper_sink_class_init (GstClapperSinkClass *klass)
DEFAULT_KEEP_LAST_FRAME,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_ROTATE_METHOD,
g_param_spec_enum ("rotate-method", "Rotate Method",
"Rotate method to use",
GST_TYPE_VIDEO_ORIENTATION_METHOD, DEFAULT_ROTATION,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gstelement_class->change_state = gst_clapper_sink_change_state;
gstbasesink_class->get_caps = gst_clapper_sink_get_caps;
@@ -878,6 +932,7 @@ gst_clapper_sink_class_init (GstClapperSinkClass *klass)
gstbasesink_class->query = gst_clapper_sink_query;
gstbasesink_class->start = gst_clapper_sink_start;
gstbasesink_class->stop = gst_clapper_sink_stop;
gstbasesink_class->event = gst_clapper_sink_event;
gstvideosink_class->set_info = gst_clapper_sink_set_info;
gstvideosink_class->show_frame = gst_clapper_sink_show_frame;

2
lib/gst/plugin/gstclappersink.h
View File

@@ -50,6 +50,7 @@ struct _GstClapperSink
GstClapperImporterLoader *loader;
GstClapperImporter *importer;
GstVideoInfo v_info;
GstVideoOrientationMethod stream_orientation;
GtkWidget *widget;
GtkWindow *window;
@@ -58,6 +59,7 @@ struct _GstClapperSink
gboolean force_aspect_ratio;
gint par_n, par_d;
gboolean keep_last_frame;
GstVideoOrientationMethod rotation_mode;
/* Position coords */
gdouble last_pos_x;