Stream

A high-level object representing a single stream. It might be backed, or not, by an actual flow of data in a pipeline (gstreamer.Pad).

A gstreamer.Stream does not care about data changes (such as decoding, encoding, parsing,...) as long as the underlying data flow corresponds to the same high-level flow (ex: a certain audio track).

A gstreamer.Stream contains all the information pertinent to a stream, such as stream-id, tags, caps, type, ...

Elements can subclass a gstreamer.Stream for internal usage (to contain information pertinent to streams of data).

Constructors

this
this(GstStream* gstStream, bool ownedRef)

Sets our main struct and passes it to the parent class.

this
this(string streamId, Caps caps, GstStreamType type, GstStreamFlags flags)

Create a new gstreamer.Stream for the given stream_id, caps, type and flags

Members

Functions

getCaps
Caps getCaps()

Retrieve the caps for stream, if any

getStreamFlags
GstStreamFlags getStreamFlags()

Retrieve the current stream flags for stream

getStreamId
string getStreamId()

Returns the stream ID of stream.

getStreamStruct
GstStream* getStreamStruct(bool transferOwnership)

Get the main Gtk struct

getStreamType
GstStreamType getStreamType()

Retrieve the stream type for stream

getStruct
void* getStruct()

the main Gtk struct as a void*

getTags
TagList getTags()

Retrieve the tags for stream, if any

setCaps
void setCaps(Caps caps)

Set the caps for the gstreamer.Stream

setStreamFlags
void setStreamFlags(GstStreamFlags flags)

Set the flags for the stream.

setStreamType
void setStreamType(GstStreamType streamType)

Set the stream type of stream

setTags
void setTags(TagList tags)

Set the tags for the gstreamer.Stream

Static functions

getType
GType getType()

Variables

gstStream
GstStream* gstStream;

the main Gtk struct

Inherited Members

From ObjectGst

gstObject
GstObject* gstObject;

the main Gtk struct

getObjectGstStruct
GstObject* getObjectGstStruct(bool transferOwnership)

Get the main Gtk struct

getStruct
void* getStruct()

the main Gtk struct as a void*

getType
GType getType()
checkUniqueness
bool checkUniqueness(ListG list, string name)

Checks to see if there is any object named name in list. This function does not do any locking of any kind. You might want to protect the provided list with the lock of the owner of the list. This function will lock each GstObject in the list to compare the name, so be careful when passing a list with a locked object.

defaultDeepNotify
void defaultDeepNotify(ObjectG object, ObjectGst orig, ParamSpec pspec, string[] excludedProps)

A default deep_notify signal callback for an object. The user data should contain a pointer to an array of strings that should be excluded from the notify. The default handler will print the new value of the property using g_print.

refSink
void* refSink(void* object)

Increase the reference count of object, and possibly remove the floating reference, if object has a floating reference.

replace
bool replace(ObjectGst oldobj, ObjectGst newobj)

Atomically modifies a pointer to point to a new object. The reference count of oldobj is decreased and the reference count of newobj is increased.

addControlBinding
bool addControlBinding(ControlBinding binding)

Attach the gstreamer.ControlBinding to the object. If there already was a gstreamer.ControlBinding for this property it will be replaced.

defaultError
void defaultError(ErrorG error, string debug_)

A default error function that uses g_printerr() to display the error message and the optional debug string..

getControlBinding
ControlBinding getControlBinding(string propertyName)

Gets the corresponding gstreamer.ControlBinding for the property. This should be unreferenced again after use.

getControlRate
GstClockTime getControlRate()

Obtain the control-rate for this object. Audio processing gstreamer.Element objects will use this rate to sub-divide their processing loop and call gst_object_sync_values() in between. The length of the processing segment should be up to control-rate nanoseconds.

getGValueArray
bool getGValueArray(string propertyName, GstClockTime timestamp, GstClockTime interval, Value[] values)

Gets a number of gobject.Values for the given controlled property starting at the requested time. The array values need to hold enough space for n_values of gobject.Value

getName
string getName()

Returns a copy of the name of object. Caller should g_free() the return value after usage. For a nameless object, this returns NULL, which you can safely g_free() as well.

getParent
ObjectGst getParent()

Returns the parent of object. This function increases the refcount of the parent object so you should gst_object_unref() it after usage.

getPathString
string getPathString()

Generates a string describing the path of object in the object hierarchy. Only useful (or used) for debugging.

getValue
Value getValue(string propertyName, GstClockTime timestamp)

Gets the value for the given controlled property at the requested time.

getValueArray
bool getValueArray(string propertyName, GstClockTime timestamp, GstClockTime interval, uint nValues, void* values)

Gets a number of values for the given controlled property starting at the requested time. The array values need to hold enough space for n_values of the same type as the objects property's type.

hasActiveControlBindings
bool hasActiveControlBindings()

Check if the object has active controlled properties.

hasAncestor
bool hasAncestor(ObjectGst ancestor)

Check if object has an ancestor ancestor somewhere up in the hierarchy. One can e.g. check if a gstreamer.Element is inside a gstreamer.Pipeline

hasAsAncestor
bool hasAsAncestor(ObjectGst ancestor)

Check if object has an ancestor ancestor somewhere up in the hierarchy. One can e.g. check if a gstreamer.Element is inside a gstreamer.Pipeline

hasAsParent
bool hasAsParent(ObjectGst parent)

Check if parent is the parent of object. E.g. a gstreamer.Element can check if it owns a given gstreamer.Pad

ref_
ObjectGst ref_()

Increments the reference count on object. This function does not take the lock on object because it relies on atomic refcounting.

removeControlBinding
bool removeControlBinding(ControlBinding binding)

Removes the corresponding gstreamer.ControlBinding If it was the last ref of the binding, it will be disposed.

setControlBindingDisabled
void setControlBindingDisabled(string propertyName, bool disabled)

This function is used to disable the control bindings on a property for some time, i.e. gst_object_sync_values() will do nothing for the property.

setControlBindingsDisabled
void setControlBindingsDisabled(bool disabled)

This function is used to disable all controlled properties of the object for some time, i.e. gst_object_sync_values() will do nothing.

setControlRate
void setControlRate(GstClockTime controlRate)

Change the control-rate for this object. Audio processing gstreamer.Element objects will use this rate to sub-divide their processing loop and call gst_object_sync_values() in between. The length of the processing segment should be up to control-rate nanoseconds.

setName
bool setName(string name)

Sets the name of object, or gives object a guaranteed unique name (if name is NULL). This function makes a copy of the provided name, so the caller retains ownership of the name it sent.

setParent
bool setParent(ObjectGst parent)

Sets the parent of object to parent. The object's reference count will be incremented, and any floating reference will be removed (see gst_object_ref_sink()).

suggestNextSync
GstClockTime suggestNextSync()

Returns a suggestion for timestamps where buffers should be split to get best controller results.

syncValues
bool syncValues(GstClockTime timestamp)

Sets the properties of the object, according to the gstreamer.ControlSources that (maybe) handle them and for the given timestamp.

unparent
void unparent()

Clear the parent of object, removing the associated reference. This function decreases the refcount of object.

unref
void unref()

Decrements the reference count on object. If reference count hits zero, destroy object. This function does not take the lock on object as it relies on atomic refcounting.

addOnDeepNotify
gulong addOnDeepNotify(void delegate(ObjectGst, ParamSpec, ObjectGst) dlg, ConnectFlags connectFlags)

The deep notify signal is used to be notified of property changes. It is typically attached to the toplevel bin to receive notifications from all the elements contained in that bin.

Meta

Since

1.10