![]() | ![]() | ![]() | GNonLin v0.2.2 Reference Manual | ![]() |
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GnlObjectGnlObject — Base class for GNonLin objects |
GnlObject; GnlObjectClass; enum GnlCoverType; enum GnlDirection; void gnl_object_set_media_start_stop (GnlObject *object, GstClockTime start, GstClockTime stop); void gnl_object_get_media_start_stop (GnlObject *object, GstClockTime *start, GstClockTime *stop); void gnl_object_set_start_stop (GnlObject *object, GstClockTime start, GstClockTime stop); void gnl_object_get_start_stop (GnlObject *object, GstClockTime *start, GstClockTime *stop); void gnl_object_set_priority (GnlObject *object, gint priority); gint gnl_object_get_priority (GnlObject *object); gboolean gnl_object_is_active (GnlObject *object); void gnl_object_set_active (GnlObject *object, gboolean active); gboolean gnl_object_covers (GnlObject *object, GstClockTime start, GstClockTime stop, GnlCoverType type); gboolean gnl_object_to_media_time (GnlObject *object, GstClockTime objecttime, GstClockTime *mediatime); gboolean gnl_media_to_object_time (GnlObject *object, GstClockTime mediatime, GstClockTime *objecttime);
GObject +----GstObject +----GstElement +----GstBin +----GnlObject +----GnlSource +----GnlComposition +----GnlOperation
"active" gboolean : Read / Write "media-start" guint64 : Read / Write "media-stop" guint64 : Read / Write "priority" gint : Read / Write "start" guint64 : Read / Write "stop" guint64 : Read / Write
typedef struct { GstBinClass parent_class; gboolean (*prepare) (GnlObject *object, GstEvent *event); gboolean (*covers) (GnlObject *object, GstClockTime start, GstClockTime stop, GnlCoverType); } GnlObjectClass;
typedef enum { GNL_COVER_ALL, GNL_COVER_SOME, GNL_COVER_START, GNL_COVER_STOP, } GnlCoverType;
Types of cover type queries.
typedef enum { GNL_DIRECTION_FORWARD, GNL_DIRECTION_BACKWARD, } GnlDirection;
GNL_DIRECTION_FORWARD | Search forward in time. |
GNL_DIRECTION_BACKWARD | Search backwards in time. |
void gnl_object_set_media_start_stop (GnlObject *object, GstClockTime start, GstClockTime stop);
Set the specified media start and stop times on the object.
object : | The object element to modify |
start : | The media start time to configure |
stop : | The media stop time to configure |
void gnl_object_get_media_start_stop (GnlObject *object, GstClockTime *start, GstClockTime *stop);
Get the currently configured media start and stop times on this object. You can optionally pass a NULL pointer to stop or start when you are not interested in its value.
object : | The object element to query |
start : | A pointer to a GstClockTime to hold the result media start time |
stop : | A pointer to a GstClockTime to hold the result media stop time |
void gnl_object_set_start_stop (GnlObject *object, GstClockTime start, GstClockTime stop);
Sets the specified start and stop times on the object.
object : | The object element to modify |
start : | The start time of this object relative to the parent |
stop : | The stop time of this object relative to the parent |
void gnl_object_get_start_stop (GnlObject *object, GstClockTime *start, GstClockTime *stop);
Get the currently configured start and stop times on this object. You can optionally pass a NULL pointer to stop or start when you are not interested in its value.
object : | The object element to query |
start : | A pointer to a GstClockTime to hold the result start time |
stop : | A pointer to a GstClockTime to hold the result stop time |
void gnl_object_set_priority (GnlObject *object, gint priority);
Set the priority on the given object
object : | The object element to modify |
priority : | The new priority of the object |
gint gnl_object_get_priority (GnlObject *object);
Get the priority of the object
object : | The object element to query |
Returns : | The priority of the object |
gboolean gnl_object_is_active (GnlObject *object);
Check if the object is active.
object : | The object element to query |
Returns : | The state of the object |
void gnl_object_set_active (GnlObject *object, gboolean active);
Activate or dectivate the given object based on the active argument.
object : | The object element to activate |
active : | the new state of the object |
gboolean gnl_object_covers (GnlObject *object, GstClockTime start, GstClockTime stop, GnlCoverType type);
object : | The GnlObject |
start : | The start GstClockTime for the query |
stop : | The stop GstClockTime for the query |
type : | The type of GnlCoverType query used |
Returns : | TRUE if the GnlObject is covered by the given start/stop time and the type of GnlCoverType |
gboolean gnl_object_to_media_time (GnlObject *object, GstClockTime objecttime, GstClockTime *mediatime);
Converts a GstClockTime from the object (container) context to the media context
object : | |
objecttime : | The GstClockTime we want to convert |
mediatime : | A pointer on a GstClockTime to fill |
Returns : | TRUE if objecttime was within the limits of the object start/stop time,
FALSE otherwise
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gboolean gnl_media_to_object_time (GnlObject *object, GstClockTime mediatime, GstClockTime *objecttime);
Converts a GstClockTime from the media context to the object (container) context
object : | |
mediatime : | The GstClockTime we want to convert |
objecttime : | A pointer on a GstClockTime to fill |
Returns : | TRUE if objecttime was within the limits of the object media start/stop time,
FALSE otherwise
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media-start
" property"media-start" guint64 : Read / Write
The media start position.
Allowed values: <= G_MAXLONG
Default value: 0
media-stop
" property"media-stop" guint64 : Read / Write
The media stop position.
Allowed values: <= G_MAXLONG
Default value: 0
priority
" property"priority" gint : Read / Write
The priority of the object.
Allowed values: >= 0
Default value: 0
start
" property"start" guint64 : Read / Write
The start position relative to the parent.
Allowed values: <= G_MAXLONG
Default value: 0
stop
" property"stop" guint64 : Read / Write
The stop position relative to the parent.
Allowed values: <= G_MAXLONG
Default value: 0
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