gstreamermm 1.8.0

Public Member Functions | Static Public Member Functions | Related Functions | List of all members
Gst::AudioFilter Class Reference
gstreamermm Base Classes

A base class for simple audio filters. More...

`#include <gstreamermm/audiofilter.h>`

Inheritance diagram for Gst::AudioFilter:
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## Public Member Functions
| AudioFilter (AudioFilter&& src) noexcept
AudioFilter& | operator= (AudioFilter&& src) noexcept
| ~AudioFilter () noexcept override
GstAudioFilter* | gobj ()
| Provides access to the underlying C GObject. More...
const GstAudioFilter* | gobj () const
| Provides access to the underlying C GObject. More...
GstAudioFilter* | gobj_copy ()
| Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. More...
virtual bool | setup_vfunc (const Gst::AudioInfo& info)
| Virtual function, called whenever the format changes. More...
Public Member Functions inherited from Gst::BaseTransform
| BaseTransform (BaseTransform&& src) noexcept
BaseTransform& | operator= (BaseTransform&& src) noexcept
| ~BaseTransform () noexcept override
GstBaseTransform* | gobj ()
| Provides access to the underlying C GObject. More...
const GstBaseTransform* | gobj () const
| Provides access to the underlying C GObject. More...
GstBaseTransform* | gobj_copy ()
| Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. More...
bool | is_passthrough () const
| See if trans is configured as a passthrough transform. More...
void | set_passthrough (bool passthrough)
| Set passthrough mode for this filter by default. More...
bool | is_in_place () const
| See if trans is configured as a in_place transform. More...
void | set_in_place (bool in_place)
| Determines whether a non-writable buffer will be copied before passing to the transform_ip function. More...
bool | is_qos_enabled () const
| Queries if the transform will handle QoS. More...
void | set_qos_enabled (bool enabled)
| Enable or disable QoS handling in the transform. More...
void | update_qos (double proportion, Gst::ClockTimeDiff diff, Gst::ClockTime timestamp)
| Set the QoS parameters in the transform. More...
void | set_gap_aware (bool gap_aware)
| If gap_aware is `false` (the default), output buffers will have the Gst::BUFFER_FLAG_GAP flag unset. More...
void | reconfigure_sink ()
| Instructs trans to request renegotiation upstream. More...
void | reconfigure_src ()
| Instructs trans to renegotiate a new downstream transform on the next buffer. More...
void | set_prefer_passthrough (bool prefer_passthrough)
| If prefer_passthrough is `true` (the default), trans will check and prefer passthrough caps from the list of caps returned by the transform_caps vmethod. More...
bool | update_src_caps (const Glib::RefPtr< Gst::Caps >& updated_caps)
| Updates the srcpad caps and send the caps downstream. More...
Glib::RefPtr< Gst::Allocator > | get_allocator (Gst::AllocationParams& params)
Glib::RefPtr< Gst::Pad > | get_sink_pad ()
| Gives the refptr to the sink Gst::Pad object of the element. More...
Glib::RefPtr< const Gst::Pad > | get_sink_pad () const
Glib::RefPtr< Gst::Pad > | get_src_pad ()
| Gives the refptr to the source Gst::Pad object of the element. More...
Glib::RefPtr< const Gst::Pad > | get_src_pad () const
Glib::PropertyProxy< bool > | property_qos ()
| Handle Quality-of-Service events. More...
Glib::PropertyProxy_ReadOnly< bool > | property_qos () const
| Handle Quality-of-Service events. More...
virtual Glib::RefPtr< Gst::Caps > | transform_caps_vfunc (PadDirection direction, const Glib::RefPtr< Gst::Caps >& caps, const Glib::RefPtr< Gst::Caps >& filter)
| Optional. More...
virtual Glib::RefPtr< Gst::Caps > | fixate_caps_vfunc (PadDirection direction, const Glib::RefPtr< Gst::Caps >& caps, const Glib::RefPtr< Gst::Caps >& othercaps)
| Optional. More...
virtual bool | get_unit_size_vfunc (const Glib::RefPtr< Gst::Caps >& caps, gsize&size) const
| Optional. More...
virtual bool | set_caps_vfunc (const Glib::RefPtr< Gst::Caps >& incaps, const Glib::RefPtr< Gst::Caps >& outcaps)
| Allows the subclass to be notified of the actual caps set. More...
virtual FlowReturn | transform_vfunc (const Glib::RefPtr< Gst::Buffer >& inbuf, const Glib::RefPtr< Gst::Buffer >& outbuf)
| Required if the element does not operate in-place. More...
virtual FlowReturn | transform_ip_vfunc (const Glib::RefPtr< Gst::Buffer >& buf)
| Required if the element operates in-place. More...
virtual FlowReturn | prepare_output_buffer_vfunc (const Glib::RefPtr< Gst::Buffer >& input, Glib::RefPtr< Gst::Buffer >& buffer)
| Optional. More...
virtual bool | src_event_vfunc (const Glib::RefPtr< Gst::Event >& event)
| Optional. More...
virtual bool | sink_event_vfunc (const Glib::RefPtr< Gst::Event >& event)
| Optional. More...
virtual void | before_transform_vfunc (const Glib::RefPtr< Gst::Buffer >& buffer)
| Optional. More...
virtual bool | accept_caps_vfunc (PadDirection direction, const Glib::RefPtr< const Gst::Caps >& caps)
| Optional. More...
virtual bool | start_vfunc ()
| Optional. More...
virtual bool | stop_vfunc ()
| Optional. More...
virtual bool | decide_allocation_vfunc (const Glib::RefPtr< Gst::Query >&query)
| Setup the allocation parameters for allocating output buffers. More...
virtual bool | filter_meta_vfunc (const Glib::RefPtr< Gst::Query >&query, GType api, const Gst::Structure& params)
| Return TRUE if the metadata API should be proposed in the upstream allocation query. More...
virtual bool | propose_allocation_vfunc (const Glib::RefPtr< Gst::Query >& decide_query, const Glib::RefPtr< Gst::Query >&query)
| Propose buffer allocation parameters for upstream elements. More...
virtual Gst::FlowReturn | submit_input_buffer_vfunc (bool is_discont, const Glib::RefPtr< Gst::Buffer >& input)
| Function which accepts a new input buffer and pre-processes it. More...
virtual Gst::FlowReturn | generate_output_vfunc (Glib::RefPtr< Gst::Buffer >& buffer)
| Called after each new input buffer is submitted repeatedly until it either generates an error or fails to generate an output buffer. More...
virtual bool | copy_metadata_vfunc (const Glib::RefPtr< Gst::Buffer >& input, const Glib::RefPtr< Gst::Buffer >& outbuf)
| Optional. More...
bool | base_transform_query_vfunc (Gst::PadDirection direction, const Glib::RefPtr< Gst::Query >&query)
| Optional. More...
Public Member Functions inherited from Gst::Element
| Element (Element&& src) noexcept
Element& | operator= (Element&& src) noexcept
| ~Element () noexcept override
GstElement* | gobj ()
| Provides access to the underlying C GObject. More...
const GstElement* | gobj () const
| Provides access to the underlying C GObject. More...
GstElement* | gobj_copy ()
| Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. More...
Glib::RefPtr< Gst::Element > | link (const Glib::RefPtr< Gst::Element >& dest)
| Links this source element to the dest element. More...
bool | add_pad (const Glib::RefPtr< Gst::Pad >& pad)
| Adds a pad (link point) to element. More...
void | create_all_pads ()
| Creates a pad for each pad template that is always available. More...
Glib::RefPtr< Gst::Pad > | create_compatible_pad (const Glib::RefPtr< const Gst::Pad >& pad, const Glib::RefPtr< const Gst::Caps >& caps)
| Looks for an unlinked pad to which the given pad can link. More...
Glib::RefPtr< Gst::PadTemplate > | get_compatible_pad_template (const Glib::RefPtr< const Gst::PadTemplate >& compattempl)
| Retrieves a pad template from element that is compatible with compattempl. More...
Glib::RefPtr< const Gst::PadTemplate > | get_compatible_pad_template (const Glib::RefPtr< const Gst::PadTemplate >& compattempl) const
| Retrieves a pad template from element that is compatible with compattempl. More...
Glib::RefPtr< Gst::Pad > | get_request_pad (const Glib::ustring& name)
| Retrieves a pad from the element by name (e.g. "src_\\%d"). More...
Glib::RefPtr< Gst::Pad > | request_pad (const Glib::RefPtr< Gst::PadTemplate >& templ, const Glib::ustring& name, const Glib::RefPtr< const Gst::Caps >& caps)
| Retrieves a request pad from the element according to the provided template. More...
Glib::RefPtr< Gst::Pad > | request_pad (const Glib::RefPtr< Gst::PadTemplate >& templ, const Glib::ustring& name)
| A request_pad() convenience overload. More...
Glib::RefPtr< Gst::Pad > | request_pad (const Glib::RefPtr< Gst::PadTemplate >& templ, const Glib::RefPtr< const Gst::Caps >& caps)
| A request_pad() convenience overload. More...
Glib::RefPtr< Gst::Pad > | request_pad (const Glib::RefPtr< Gst::PadTemplate >& templ)
| A request_pad() convenience overload. More...
Glib::RefPtr< Gst::Pad > | get_static_pad (const Glib::ustring& name)
| Retrieves a pad from element by name. More...
Glib::RefPtr< const Gst::Pad > | get_static_pad (const Glib::ustring& name) const
| Retrieves a pad from element by name. More...
void | no_more_pads ()
| Use this function to signal that the element does not expect any more pads to show up in the current pipeline. More...
void | release_request_pad (const Glib::RefPtr< Gst::Pad >& pad)
| Makes the element free the previously requested pad as obtained with get_request_pad(). More...
bool | remove_pad (const Glib::RefPtr< Gst::Pad >& pad)
| Removes pad from element. More...
Gst::Iterator< Gst::Pad > | iterate_pads ()
| Retrieves an iterator of element's pads. More...
Gst::Iterator< const Gst::Pad > | iterate_pads () const
| Retrieves an iterator of element's pads. More...
Gst::Iterator< Gst::Pad > | iterate_sink_pads ()
| Retrieves an iterator of element's sink pads. More...
Gst::Iterator< const Gst::Pad > | iterate_sink_pads () const
| Retrieves an iterator of element's sink pads. More...
Gst::Iterator< Gst::Pad > | iterate_src_pads ()
| Retrieves an iterator of element's source pads. More...
Gst::Iterator< const Gst::Pad > | iterate_src_pads () const
| Retrieves an iterator of element's source pads. More...
void | unlink (const Glib::RefPtr< Gst::Element >& dest)
| Unlinks all source pads of the source element with all sink pads of the sink element to which they are linked. More...
void | set_context (const Glib::RefPtr< Gst::Context >& context)
| Sets the context of the element. More...
bool | link_pads (const Glib::ustring& srcpadname, const Glib::RefPtr< Gst::Element >& dest, const Glib::ustring& destpadname)
| Links the two named pads of the source and destination elements. More...
void | unlink_pads (const Glib::ustring& srcpadname, const Glib::RefPtr< Gst::Element >& dest, const Glib::ustring& destpadname)
| Unlinks the two named pads of the source and destination elements. More...
bool | link_pads (const Glib::ustring& srcpadname, const Glib::RefPtr< Gst::Element >& dest, const Glib::ustring& destpadname, const Glib::RefPtr< Gst::Caps >& filter)
| Links the two named pads of the source and destination elements. More...
bool | link_pads (const Glib::ustring& srcpadname, const Glib::RefPtr< Gst::Element >& dest, const Glib::ustring& destpadname, PadLinkCheck flags)
| Links the two named pads of the source and destination elements. More...
Glib::RefPtr< Gst::Element > | link (const Glib::RefPtr< Gst::Element >& dest, const Glib::RefPtr< Gst::Caps >& filter)
| Links src to dest using the given caps as filtercaps. More...
void | set_base_time (ClockTime time)
| Set the base time of an element. More...
ClockTime | get_base_time () const
| Returns the base time of the element. More...
void | set_start_time (Gst::ClockTime time)
| Set the start time of an element. More...
Gst::ClockTime | get_start_time () const
| Returns the start time of the element. More...
void | set_bus (const Glib::RefPtr< Gst::Bus >& bus)
| Sets the bus of the element. More...
Glib::RefPtr< Gst::Bus > | get_bus ()
| Returns the bus of the element. More...
Glib::RefPtr< const Gst::Bus > | get_bus () const
| Returns the bus of the element. More...
Glib::RefPtr< Gst::ElementFactory > | get_factory ()
| Retrieves the factory that was used to create this element. More...
Glib::RefPtr< const Gst::ElementFactory > | get_factory () const
| Retrieves the factory that was used to create this element. More...
bool | set_clock (const Glib::RefPtr< Gst::Clock >& clock)
| Sets the clock for the element. More...
Glib::RefPtr< Gst::Clock > | get_clock ()
| Gets the currently configured clock of the element. More...
Glib::RefPtr< const Gst::Clock > | get_clock () const
| Gets the currently configured clock of the element. More...
Glib::RefPtr< Gst::Clock > | provide_clock ()
| Get the clock provided by the given element. More...
Glib::RefPtr< const Gst::Clock > | provide_clock () const
| Get the clock provided by the given element. More...
StateChangeReturn | set_state (State state)
| Sets the state of the element. More...
StateChangeReturn | get_state (State& state, State& pending, ClockTime timeout) const
| Gets the state of the element. More...
bool | set_locked_state (gboolean locked_state)
| Locks the state of an element, so state changes of the parent don't affect this element anymore. More...
bool | is_locked_state () const
| Checks if the state of an element is locked. More...
void | abort_state ()
| Abort the state change of the element. More...
StateChangeReturn | continue_state (StateChangeReturn ret)
| Commit the state change of the element and proceed to the next pending state if any. More...
void | lost_state ()
| Brings the element to the lost state. More...
bool | sync_state_with_parent ()
| Tries to change the state of the element to the same as its parent. More...
StateChangeReturn | change_state (StateChange transition)
| Perform transition on element. More...
void | post_message (int code, int line, MessageType type=Gst::MESSAGE_INFO, const Glib::QueryQuark& domain=get_core_error_quark(), const Glib::ustring& text=Glib::ustring(), const Glib::ustring& debug=Glib::ustring(), const Glib::ustring& file=Glib::ustring(), const Glib::ustring& function=Glib::ustring())
| Post an error, warning or info message on the bus from inside an element. More...
bool | post_message (Glib::RefPtr< Gst::Message >&& message)
| Post a message on the element's Gst::Bus. More...
bool | query (const Glib::RefPtr< Gst::Query >& query) const
| Performs a query on the given element. More...
bool | query_convert (Gst::Format src_format, gint64 src_val, Format dest_format, gint64& dest_val) const
| Queries an element to convert src_val in src_format to dest_format. More...
bool | query_position (Gst::Format format, gint64& cur) const
| Queries an element (usually top-level pipeline or playbin element) for the stream position in nanoseconds. More...
bool | query_position (Gst::Format format) const
| A query_position() convenience overload. More...
bool | query_duration (Gst::Format format, gint64& duration) const
| Queries an element (usually top-level pipeline or playbin element) for the total stream duration in nanoseconds. More...
bool | query_duration (Gst::Format format) const
| A query_duration() convenience overload. More...
bool | seek (Format format, SeekFlags seek_flags, gint64 seek_pos)
| Simple API to perform a seek on the given element, meaning it just seeks to the given position relative to the start of the stream. More...
bool | seek (double rate, Format format, SeekFlags flags, SeekType cur_type, gint64 cur, SeekType stop_type, gint64 stop)
| Sends a seek event to an element. More...
bool | send_event (Glib::RefPtr< Gst::Event >&& event)
| Sends an event to an element. More...
bool | send_event (const Glib::RefPtr< Gst::Event >& event)
| A send_event() convenience overload. Allows to re-use event parameter after function call. More...
Glib::RefPtr< Gst::Context > | get_context (const Glib::ustring& context_type)
| Gets the context with context_type set on the element or `nullptr`. More...
Glib::RefPtr< Gst::Context > | get_context_unlocked (const Glib::ustring& context_type)
| Gets the context with context_type set on the element or `nullptr`. More...
std::vector< Glib::RefPtr< Gst::Context > > | get_contexts ()
| Gets the contexts set on the element. More...
Glib::SignalProxy< void > | signal_no_more_pads ()
Glib::SignalProxy< void, const Glib::RefPtr< Gst::Pad >&> | signal_pad_added ()
Glib::SignalProxy< void, const Glib::RefPtr< Gst::Pad >&> | signal_pad_removed ()
virtual void | release_pad_vfunc (const Glib::RefPtr< Gst::Pad >& pad)
| Called when a request pad is to be released. More...
virtual Glib::RefPtr< Gst::Pad > | request_new_pad_vfunc (Glib::RefPtr< Gst::PadTemplate > templ, const Glib::ustring& name, const Glib::RefPtr< const Gst::Caps >& caps)
| Called when a new pad is requested. More...
virtual StateChangeReturn | get_state_vfunc (State& state, State& pending, ClockTime timeout) const
| Get the state of the element. More...
virtual StateChangeReturn | set_state_vfunc (State state)
| Set a new state on the element. More...
virtual StateChangeReturn | change_state_vfunc (StateChange transition)
| Called by set_state to perform an incremental state change. More...
virtual void | state_changed_vfunc (Gst::State oldstate, Gst::State newstate, Gst::State pending)
| Called immediately after a new state was set. More...
virtual void | set_bus_vfunc (const Glib::RefPtr< Gst::Bus >& bus)
| Set a Gst::Bus on the element. More...
virtual Glib::RefPtr< Gst::Clock > | provide_clock_vfunc ()
| Gets the Gst::Clock provided by the element. More...
virtual bool | set_clock_vfunc (const Glib::RefPtr< Gst::Clock >& clock)
| Set the Gst::Clock on the element. More...
virtual bool | send_event_vfunc (const Glib::RefPtr< Gst::Event >& event)
| Send a Gst::Event to the element. More...
virtual bool | query_vfunc (const Glib::RefPtr< Gst::Query >&query) const
| Perform a Gst::Query on the element. More...
virtual void | set_context_vfunc (const Glib::RefPtr< Gst::Context >& context)
| Set a Gst::Context on the element. More...
virtual bool | post_message_vfunc (const Glib::RefPtr< Gst::Message >& message)
| Called when a message is posted on the element. More...
Glib::RefPtr< Gst::PadTemplate > | get_pad_template (const Glib::ustring& factory_name) const
template<typename T >
Glib::RefPtr< Gst::Element > | property (const Glib::ustring& name, const T& value)
| Sets specified property. More...
Public Member Functions inherited from Gst::Object
| Object (Object&& src) noexcept
Object& | operator= (Object&& src) noexcept
| ~Object () noexcept override
GstObject* | gobj ()
| Provides access to the underlying C GObject. More...
const GstObject* | gobj () const
| Provides access to the underlying C GObject. More...
GstObject* | gobj_copy ()
| Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. More...
bool | is_element () const
bool | is_element_factory () const
bool | is_pad () const
bool | is_pad_template () const
bool | is_bin () const
guint32 | get_flags () const
| Returns the entire set of flags for the object. More...
bool | set_name (const Glib::ustring& name)
| Sets the name of object, or gives object a guaranteed unique name (if name is `nullptr`). More...
Glib::ustring | get_name () const
| Returns a copy of the name of object. More...
bool | set_parent (const Glib::RefPtr< Gst::Object >& parent)
| Sets the parent of object to parent. More...
Glib::RefPtr< Gst::Object > | get_parent ()
| Returns the parent of object. More...
Glib::RefPtr< const Gst::Object > | get_parent () const
| Returns the parent of object. More...
void | unparent ()
| Clear the parent of object, removing the associated reference. More...
void | set_control_rate (Gst::ClockTime control_rate)
| Change the control-rate for this object. More...
Gst::ClockTime | get_control_rate () const
| Obtain the control-rate for this object. More...
Gst::ClockTime | suggest_next_sync () const
| Returns a suggestion for timestamps where buffers should be split to get best controller results. More...
bool | sync_values (Gst::ClockTime timestamp)
| Sets the properties of the object, according to the Gst::ControlSources that (maybe) handle them and for the given timestamp. More...
void | set_control_bindings_disabled (bool disabled)
| This function is used to disable all controlled properties of the object for some time, i.e. sync_values() will do nothing. More...
bool | has_asctive_control_bindings () const
| Check if the object has an active controlled properties. More...
bool | has_ancestor (const Glib::RefPtr< const Gst::Object >& ancestor) const
| Check if object has an ancestor ancestor somewhere up in the hierarchy. More...
bool | has_as_ancestor (const Glib::RefPtr< Gst::Object >& ancestor) const
| Check if object has an ancestor ancestor somewhere up in the hierarchy. More...
bool | has_as_parent (const Glib::RefPtr< Gst::Object >& parent) const
| Check if parent is the parent of object. More...
Glib::ustring | get_path_string ()
| Generates a string describing the path of object in the object hierarchy. More...
Glib::PropertyProxy< Glib::ustring > | property_name ()
| The name of the object. More...
Glib::PropertyProxy_ReadOnly< Glib::ustring > | property_name () const
| The name of the object. More...
Glib::PropertyProxy< Glib::RefPtr< Gst::Object > > | property_parent ()
| The parent of the object. More...
Glib::PropertyProxy_ReadOnly< Glib::RefPtr< Gst::Object > > | property_parent () const
| The parent of the object. More...
Glib::SignalProxy< void, const Glib::RefPtr< Gst::Object >&, GParamSpec*> | signal_deep_notify ()
int | get_refcount () const
Public Member Functions inherited from Glib::Object
| Object (const Object &)=delete
Object & | operator= (const Object &)=delete
| Object (Object &&src) noexcept
Object & | operator= (Object &&src) noexcept
void * | get_data (const QueryQuark &key)
void | set_data (const Quark &key, void *data)
void | set_data (const Quark &key, void *data, DestroyNotify notify)
void | remove_data (const QueryQuark &quark)
void * | steal_data (const QueryQuark &quark)
Glib::RefPtr< Glib::Object > | wrap (GObject *object, bool take_copy=false)
Public Member Functions inherited from Glib::ObjectBase
| ObjectBase (const ObjectBase &)=delete
ObjectBase & | operator= (const ObjectBase &)=delete
void | set_property_value (const Glib::ustring &property_name, const Glib::ValueBase &value)
void | get_property_value (const Glib::ustring &property_name, Glib::ValueBase &value) const
void | set_property (const Glib::ustring &property_name, const PropertyType &value)
void | get_property (const Glib::ustring &property_name, PropertyType &value) const
void | connect_property_changed (const Glib::ustring &property_name, const sigc::slot< void > &slot)
void | connect_property_changed (const Glib::ustring &property_name, sigc::slot< void > &&slot)
sigc::connection | connect_property_changed_with_return (const Glib::ustring &property_name, const sigc::slot< void > &slot)
sigc::connection | connect_property_changed_with_return (const Glib::ustring &property_name, sigc::slot< void > &&slot)
void | freeze_notify ()
void | thaw_notify ()
virtual void | reference () const
virtual void | unreference () const
GObject * | gobj ()
const GObject * | gobj () const
GObject * | gobj_copy () const
Public Member Functions inherited from sigc::trackable
| trackable () noexcept
| trackable (const trackable &src) noexcept
| trackable (trackable &&src)
| ~trackable ()
void | add_destroy_notify_callback (void *data, func_destroy_notify func) const
void | notify_callbacks ()
trackable & | operator= (const trackable &src)
trackable & | operator= (trackable &&src)
void | remove_destroy_notify_callback (void *data) const

## Static Public Member Functions
static GType | get_type ()
| Get the GType for this class, for use with the underlying GObject type system. More...
Static Public Member Functions inherited from Gst::BaseTransform
static GType | get_type ()
| Get the GType for this class, for use with the underlying GObject type system. More...
Static Public Member Functions inherited from Gst::Element
static GType | get_type ()
| Get the GType for this class, for use with the underlying GObject type system. More...
Static Public Member Functions inherited from Gst::Object
static GType | get_type ()
| Get the GType for this class, for use with the underlying GObject type system. More...
static bool | check_uniqueness (const Glib::ListHandle< const Gst::Object >& list, const Glib::ustring& name)
| Checks to see if there is any object named name in list. More...

## Related Functions
(Note that these are not member functions.)
Glib::RefPtr< Gst::AudioFilter > | wrap (GstAudioFilter* object, bool take_copy=false)
| A Glib::wrap() method for this object. More...
Related Functions inherited from Gst::BaseTransform
Glib::RefPtr< Gst::BaseTransform > | wrap (GstBaseTransform* object, bool take_copy=false)
| A Glib::wrap() method for this object. More...
Related Functions inherited from Gst::Element
Glib::RefPtr< Gst::Element > | wrap (GstElement* object, bool take_copy=false)
| A Glib::wrap() method for this object. More...
Related Functions inherited from Gst::Object
Glib::RefPtr< Gst::Object > | wrap (GstObject* object, bool take_copy=false)
| A Glib::wrap() method for this object. More...

## Additional Inherited Members
Public Types inherited from Glib::Object
typedef void(*)(gpointer data | DestroyNotify)
Public Types inherited from sigc::trackable
typedef internal::func_destroy_notify | func_destroy_notify
Static Public Attributes inherited from Gst::BaseTransform
static const Glib::ustring | SINK_NAME
| The name of the templates for the sink pad ("sink"). More...
static const Glib::ustring | SRC_NAME
| The name of the templates for the source pad ("src"). More...
static constexpr Gst::FlowReturn | FLOW_DROPPED = static_cast<Gst::FlowReturn>(GST_BASE_TRANSFORM_FLOW_DROPPED)
| A Gst::FlowReturn that can be returned from transform_vfunc and transform_ip_vfunc to indicate that no output buffer was generated. More...
Protected Member Functions inherited from Gst::Element
virtual void | on_no_more_pads ()
| This is a default handler for the signal signal_no_more_pads(). More...
virtual void | on_pad_added (const Glib::RefPtr< Gst::Pad >& new_pad)
| This is a default handler for the signal signal_pad_added(). More...
virtual void | on_pad_removed (const Glib::RefPtr< Gst::Pad >& old_pad)
| This is a default handler for the signal signal_pad_removed(). More...
Protected Member Functions inherited from Gst::Object
virtual void | on_deep_notify (const Glib::RefPtr< Gst::Object >& prop_object, GParamSpec* prop)
| This is a default handler for the signal signal_deep_notify(). More...
Protected Member Functions inherited from Glib::Object
| Object ()
| Object (const Glib::ConstructParams &construct_params)
| Object (GObject *castitem)
| ~Object () noexceptoverride
Protected Member Functions inherited from Glib::ObjectBase
| ObjectBase ()
| ObjectBase (const char *custom_type_name)
| ObjectBase (const std::type_info &custom_type_info)
| ObjectBase (ObjectBase &&src) noexcept
ObjectBase & | operator= (ObjectBase &&src) noexcept
virtual | ~ObjectBase () noexcept=0
void | initialize (GObject *castitem)
void | initialize_move (GObject *castitem, Glib::ObjectBase *previous_wrapper)

## Detailed Description

A base class for simple audio filters.

Gst::AudioFilter is a Gst::BaseTransform-derived base class for simple audio filters, ie. those that output the same format that they get as input.

Gst::AudioFilter will parse the input format for you (with error checking) before calling your setup function. Also, elements deriving from Gst::AudioFilter may use gst_audio_filter_class_add_pad_templates() from their base_init function to easily configure the set of caps/formats that the element is able to handle.

Derived classes should override the Gst::AudioFilter::setup_vfunc() and Gst::BaseTransform::transform_ip_vfunc() and/or Gst::BaseTransform::transform_vfunc() virtual functions.

Last reviewed on 2016-04-23 (1.8.0).

## Constructor & Destructor Documentation

## § AudioFilter()

Gst::AudioFilter::AudioFilter | ( | AudioFilter&& | src | ) |
| noexcept

## § ~AudioFilter()

Gst::AudioFilter::~AudioFilter | ( |  | ) |
| override noexcept

## Member Function Documentation

## § get_type()

static GType Gst::AudioFilter::get_type | ( |  | ) |
| static

Get the GType for this class, for use with the underlying GObject type system.

## § gobj() [1/2]

GstAudioFilter* Gst::AudioFilter::gobj | ( |  | ) |
| inline

Provides access to the underlying C GObject.

## § gobj() [2/2]

const GstAudioFilter* Gst::AudioFilter::gobj | ( |  | ) | const
| inline

Provides access to the underlying C GObject.

## § gobj_copy()

GstAudioFilter* Gst::AudioFilter::gobj_copy | ( |  | ) |

Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.

## § operator=()

AudioFilter& Gst::AudioFilter::operator= | ( | AudioFilter&& | src | ) |
| noexcept

## § setup_vfunc()

virtual bool Gst::AudioFilter::setup_vfunc | ( | const Gst::AudioInfo& | info | ) |
| virtual

Virtual function, called whenever the format changes.

## Friends And Related Function Documentation

## § wrap()

Glib::RefPtr< Gst::AudioFilter > wrap | ( | GstAudioFilter * | object,
|  | bool | take_copy = `false`
| ) |  |
| related

A Glib::wrap() method for this object.

Parameters

  object | The C instance.
  take_copy | False if the result should take ownership of the C instance. True if it should take a new copy or ref.

Returns
  A C++ instance that wraps this C instance.