Gst

Description:

Content:

Interfaces:

ChildProxy - This interface abstracts handling of property sets for elements with children.
ImplementsInterface - Provides interface functionality on per instance basis and not per class basis, which is the case for gobject.
Preset - This interface offers methods to query and manipulate parameter preset sets.
TagSetter - Element interface that allows setting of media metadata.
URIHandler - The URIHandler is an interface that is implemented by Source and Sink Element to simplify then handling of URI.

Classes:

AllocTrace - The main tracing object
AtomicQueue - The AtomicQueue object implements a queue that can be used from multiple threads without performing any blocking operations.
Bin - Subclasses can override the add_element and remove_element to update the list of children in the bin.
Buffer - Buffers are the basic unit of data transfer in GStreamer.
BufferList -
BufferListIterator - Opaque iterator for a BufferList.
Bus - The Bus is an object responsible for delivering Message packets in a first-in first-out way from the streaming threads (see Task) to the application.
Caps - Caps (capabilities) are lighweight refcounted objects describing media types.
Clock - GStreamer clock class.
ClockEntry - All pending timeouts or periodic notifies are converted into an entry.
ClockID - A datatype to hold the handle to an outstanding sync or async clock callback.
Date -
DateTime - Struct to store date, time and timezone information altogether.
DebugCategory - This is the struct that describes the categories.
DebugMessage -
Element - GStreamer element class.
ElementFactory - ElementFactory is used to create instances of elements.
Event - The event class provides factory methods to construct events for sending and functions to query (parse) received events.
GError -
GhostPad - GhostPads are useful when organizing pipelines with Bin like elements.
Index - GstIndex is used to generate a stream index of one or more elements in a pipeline.
IndexEntry - The basic element of an index.
IndexFactory - GstIndexFactory is used to dynamically create GstIndex implementations.
Iterator - A GstIterator is used to retrieve multiple objects from another object in a threadsafe way.
Message - Messages are implemented as a subclass of MiniObject with a generic Structure as the content.
MiniObject - MiniObject is a baseclass like Object, but has been stripped down of features to be fast and small.
Object - GStreamer base object class.
Pad - A Element is linked to other elements via "pads", which are extremely light-weight generic link points.
PadTemplate - Padtemplates describe the possible media types a pad or an elementfactory can handle.
ParamSpecFraction - A GParamSpec derived structure that contains the meta data for fractional properties.
ParamSpecMiniObject - A ParamSpec derived structure that contains the meta data for MiniObject properties.
ParseContext - Opaque structure.
Pipeline - A Pipeline is a special Bin used as the toplevel container for the filter graph.
Plugin -
PluginFeature - This is a base class for anything that can be added to a Plugin.
Poll - A Poll keeps track of file descriptors much like fd_set (used with select) or a struct pollfd array (used with poll).
ProxyPad -
Query - GstQuery functions are used to register new query types to the gstreamer core and use them.
Registry - One registry holds the metadata of a set of plugins.
Segment - This helper structure holds the relevant values for tracking the region of interest in a media file, called a segment.
Structure - A Structure is a collection of key/value pairs.
SystemClock - The GStreamer core provides a GstSystemClock based on the system time.
TagList - List of tags and values used to describe media metadata.
Task - Task is used by Element and Pad to provide the data passing threads in a Pipeline.
TaskPool - The TaskPool object.
TaskThreadCallbacks - Custom GstTask thread callback functions that can be installed.
Trace - Traces allows to track object allocation.
TraceEntry -
TypeFind - The following functions allow you to detect the media type of an unknown stream.
TypeFindFactory - These functions allow querying informations about registered typefind functions.
TypeNameData - Structure used for filtering based on name and type.
ValueTable - VTable for the Value type.
XML - GStreamer pipelines can be saved to xml files using write_file.

Structs:

Array -
ClockTime - A datatype to hold a time, measured in nanoseconds.
ClockTimeDiff - A datatype to hold a time difference, measured in nanoseconds.
DoubleRange -
ElementDetails - This struct defines the public information about a Element.
ElementFactoryListType -
FormatDefinition - A format definition
Fraction -
FractionRange -
IndexAssociation - An association in an entry.
IntRange -
List -
PluginDesc - A plugin should export a variable of this type called plugin_desc.
PollFD - A file descriptor object.
QueryTypeDefinition - A Query Type definition
StaticCaps - Datastructure to initialize Caps from a string description usually used in conjunction with GST_STATIC_CAPS and @get to instantiate a Caps.
StaticPadTemplate - Structure describing the StaticPadTemplate.
Value -

Enums:

ActivateMode - The status of a GstPad.
AllocTraceFlags - Flags indicating which tracing feature to enable.
AssocFlags - Flags for an association entry.
BinFlags - GstBinFlags are a set of flags specific to bins.
BufferCopyFlags - A set of flags that can be provided to the copy_metadata function to specify which metadata fields should be copied.
BufferFlag - A set of buffer flags used to describe properties of a Buffer.
BufferListItem - The result of the BufferListFunc.
BufferingMode - The different types of buffering methods.
BusFlags - The standard flags that a bus may have.
BusSyncReply - The result values for a GstBusSyncHandler.
CapsFlags - Extra flags for a caps.
CapsIntersectMode - Modes of caps intersection
ClockEntryType - The type of the clock entry
ClockFlags - The capabilities of this clock
ClockReturn - The return value of a clock operation.
ClockType - The different kind of clocks.
DebugColorFlags - These are some terminal style flags you can use when creating your debugging categories to make them stand out in debugging output.
DebugGraphDetails - Available details for pipeline graphs produced by debug_bin_to_dot_file and debug_bin_to_dot_file_with_ts.
DebugLevel - The level defines the importance of a debugging message.
ElementFlags - The standard flags that an element may have.
EventType - EventType lists the standard event types that can be sent in a pipeline.
EventTypeFlags - EventTypeFlags indicate the aspects of the different EventType values.
FlowReturn - The result of passing data to a pad.
Format - Standard predefined formats
IndexCertainty - The certainty of a group in the index.
IndexEntryType - The different types of entries in the index.
IndexFlags - Flags for this index
IndexLookupMethod - Specify the method to find an index entry in the index.
IndexResolverMethod - The method used to resolve index writers
IteratorItem - The result of a IteratorItemFunction.
IteratorResult - The result of next.
LibraryError - Library errors are for errors from the library being used by elements (initializing, finalizing, settings, ...)
MessageType - The different message types that are available.
MiniObjectFlags - Flags for the mini object
ObjectFlags - The standard flags that an gstobject may have.
PadDirection - The direction of a pad.
PadFlags - Pad state flags
PadLinkCheck - The amount of checking to be done when linking pads.
PadLinkReturn - Result values from gst_pad_link and friends.
PadPresence - Indicates when this pad will become available.
PadTemplateFlags - Flags for the padtemplate
ParseError - The different parsing errors that can occur.
ParseFlags - Parsing options.
PipelineFlags - Pipeline flags
PluginDependencyFlags - Flags used in connection with add_dependency.
PluginError - The plugin loading errors
PluginFlags - The plugin loading state
ProgressType - The type of a PROGRESS.
QOSType - The different types of QoS events that can be given to the Event.qos_full method.
QueryType - Standard predefined Query types
Rank - Element priority ranks.
ResourceError - Resource errors are for any resource used by an element: memory, files, network connections, process space, ... They're typically used by source and sink elements.
SearchMode - The different search modes.
SeekFlags - Flags to be used with seek or Event.seek.
SeekType - The different types of seek events.
State - The possible states an element can be in.
StateChange - These are the different state changes an element goes through.
StateChangeReturn - The possible return values from a state change function such as set_state.
StreamError - Stream errors are for anything related to the stream being processed: format errors, media type errors, ... They're typically used by decoders, demuxers, converters, ...
StreamStatusType - The type of a STREAM_STATUS.
StructureChangeType - The type of a STRUCTURE_CHANGE.
TagFlag - Extra tag flags used when registering tags.
TagMergeMode -
TaskState - The different states a task can be in
TypeFindProbability - The probability of the typefind function.
URIType - The different types of URI direction.

Error domains:

CoreError - Core errors are errors inside the core GStreamer library.

Constants:

public const int BUFFER_COPY_ALL
public const int BUFFER_OFFSET_NONE
public const unowned string BUFFER_TRACE_NAME
public const unowned string CLOCK_ENTRY_TRACE_NAME
public const int CLOCK_TIME_NONE
public const int DEBUG_BG_MASK
public const int DEBUG_FG_MASK
public const int DEBUG_FORMAT_MASK
public const unowned string ELEMENT_FACTORY_KLASS_DECODER
public const unowned string ELEMENT_FACTORY_KLASS_DEMUXER
public const unowned string ELEMENT_FACTORY_KLASS_DEPAYLOADER
public const unowned string ELEMENT_FACTORY_KLASS_ENCODER
public const unowned string ELEMENT_FACTORY_KLASS_FORMATTER
public const unowned string ELEMENT_FACTORY_KLASS_MEDIA_AUDIO
public const unowned string ELEMENT_FACTORY_KLASS_MEDIA_IMAGE
public const unowned string ELEMENT_FACTORY_KLASS_MEDIA_METADATA
public const unowned string ELEMENT_FACTORY_KLASS_MEDIA_SUBTITLE
public const unowned string ELEMENT_FACTORY_KLASS_MEDIA_VIDEO
public const unowned string ELEMENT_FACTORY_KLASS_MUXER
public const unowned string ELEMENT_FACTORY_KLASS_PARSER
public const unowned string ELEMENT_FACTORY_KLASS_PAYLOADER
public const unowned string ELEMENT_FACTORY_KLASS_SINK
public const unowned string ELEMENT_FACTORY_KLASS_SRC
public const int ELEMENT_FACTORY_TYPE_ANY
public const int ELEMENT_FACTORY_TYPE_AUDIOVIDEO_SINKS
public const int ELEMENT_FACTORY_TYPE_AUDIO_ENCODER
public const int ELEMENT_FACTORY_TYPE_DECODABLE
public const int ELEMENT_FACTORY_TYPE_DECODER
public const int ELEMENT_FACTORY_TYPE_DEMUXER
public const int ELEMENT_FACTORY_TYPE_DEPAYLOADER
public const int ELEMENT_FACTORY_TYPE_ENCODER
public const int ELEMENT_FACTORY_TYPE_FORMATTER
public const int ELEMENT_FACTORY_TYPE_MAX_ELEMENTS
public const int ELEMENT_FACTORY_TYPE_MEDIA_ANY
public const int ELEMENT_FACTORY_TYPE_MEDIA_AUDIO
public const int ELEMENT_FACTORY_TYPE_MEDIA_IMAGE
public const int ELEMENT_FACTORY_TYPE_MEDIA_METADATA
public const int ELEMENT_FACTORY_TYPE_MEDIA_SUBTITLE
public const int ELEMENT_FACTORY_TYPE_MEDIA_VIDEO
public const int ELEMENT_FACTORY_TYPE_MUXER
public const int ELEMENT_FACTORY_TYPE_PARSER
public const int ELEMENT_FACTORY_TYPE_PAYLOADER
public const int ELEMENT_FACTORY_TYPE_SINK
public const int ELEMENT_FACTORY_TYPE_SRC
public const int ELEMENT_FACTORY_TYPE_VIDEO_ENCODER
public const unowned string EVENT_TRACE_NAME
public const int EVENT_TYPE_BOTH
public const int EVENT_TYPE_SHIFT
public const unowned string FOURCC_FORMAT
public const unowned string LICENSE_UNKNOWN
public const unowned string MESSAGE_TRACE_NAME
public const int MSECOND
public const int NSECOND
public const int PAD_LINK_CHECK_DEFAULT
public const int PARAM_CONTROLLABLE
public const int PARAM_MUTABLE_PAUSED
public const int PARAM_MUTABLE_PLAYING
public const int PARAM_MUTABLE_READY
public const int PARAM_USER_SHIFT
public const int SECOND
public const unowned string TAG_ALBUM
public const unowned string TAG_ALBUM_ARTIST
public const unowned string TAG_ALBUM_ARTIST_SORTNAME
public const unowned string TAG_ALBUM_GAIN
public const unowned string TAG_ALBUM_PEAK
public const unowned string TAG_ALBUM_SORTNAME
public const unowned string TAG_ALBUM_VOLUME_COUNT
public const unowned string TAG_ALBUM_VOLUME_NUMBER
public const unowned string TAG_APPLICATION_DATA
public const unowned string TAG_APPLICATION_NAME
public const unowned string TAG_ARTIST
public const unowned string TAG_ARTIST_SORTNAME
public const unowned string TAG_ATTACHMENT
public const unowned string TAG_AUDIO_CODEC
public const unowned string TAG_BEATS_PER_MINUTE
public const unowned string TAG_BITRATE
public const unowned string TAG_CODEC
public const unowned string TAG_COMMENT
public const unowned string TAG_COMPOSER
public const unowned string TAG_COMPOSER_SORTNAME
public const unowned string TAG_CONTACT
public const unowned string TAG_CONTAINER_FORMAT
public const unowned string TAG_COPYRIGHT
public const unowned string TAG_COPYRIGHT_URI
public const unowned string TAG_DATE
public const unowned string TAG_DATE_TIME
public const unowned string TAG_DESCRIPTION
public const unowned string TAG_DEVICE_MANUFACTURER
public const unowned string TAG_DEVICE_MODEL
public const unowned string TAG_DURATION
public const unowned string TAG_ENCODED_BY
public const unowned string TAG_ENCODER
public const unowned string TAG_ENCODER_VERSION
public const unowned string TAG_EXTENDED_COMMENT
public const unowned string TAG_GENRE
public const unowned string TAG_GEO_LOCATION_CAPTURE_DIRECTION
public const unowned string TAG_GEO_LOCATION_CITY
public const unowned string TAG_GEO_LOCATION_COUNTRY
public const unowned string TAG_GEO_LOCATION_ELEVATION
public const unowned string TAG_GEO_LOCATION_HORIZONTAL_ERROR
public const unowned string TAG_GEO_LOCATION_LATITUDE
public const unowned string TAG_GEO_LOCATION_LONGITUDE
public const unowned string TAG_GEO_LOCATION_MOVEMENT_DIRECTION
public const unowned string TAG_GEO_LOCATION_MOVEMENT_SPEED
public const unowned string TAG_GEO_LOCATION_NAME
public const unowned string TAG_GEO_LOCATION_SUBLOCATION
public const unowned string TAG_GROUPING
public const unowned string TAG_HOMEPAGE
public const unowned string TAG_IMAGE
public const unowned string TAG_IMAGE_ORIENTATION
public const unowned string TAG_ISRC
public const unowned string TAG_KEYWORDS
public const unowned string TAG_LANGUAGE_CODE
public const unowned string TAG_LICENSE
public const unowned string TAG_LICENSE_URI
public const unowned string TAG_LOCATION
public const unowned string TAG_LYRICS
public const unowned string TAG_MAXIMUM_BITRATE
public const unowned string TAG_MINIMUM_BITRATE
public const unowned string TAG_NOMINAL_BITRATE
public const unowned string TAG_ORGANIZATION
public const unowned string TAG_PERFORMER
public const unowned string TAG_PREVIEW_IMAGE
public const unowned string TAG_REFERENCE_LEVEL
public const unowned string TAG_SERIAL
public const unowned string TAG_SHOW_EPISODE_NUMBER
public const unowned string TAG_SHOW_NAME
public const unowned string TAG_SHOW_SEASON_NUMBER
public const unowned string TAG_SHOW_SORTNAME
public const unowned string TAG_SUBTITLE_CODEC
public const unowned string TAG_TITLE
public const unowned string TAG_TITLE_SORTNAME
public const unowned string TAG_TRACK_COUNT
public const unowned string TAG_TRACK_GAIN
public const unowned string TAG_TRACK_NUMBER
public const unowned string TAG_TRACK_PEAK
public const unowned string TAG_USER_RATING
public const unowned string TAG_VERSION
public const unowned string TAG_VIDEO_CODEC
public const unowned string TIME_FORMAT
public const int USECOND
public const int VALUE_EQUAL
public const int VALUE_GREATER_THAN
public const int VALUE_LESS_THAN
public const int VALUE_UNORDERED
public const int VERSION_MAJOR
public const int VERSION_MICRO
public const int VERSION_MINOR
public const int VERSION_NANO

Delegates:

public delegate weak Buffer BufferListDoFunction (Buffer buffer)
A function for accessing the last buffer returned by next.
public delegate BufferListItem BufferListFunc (out Buffer buffer, uint group, uint idx)
A function that will be called from @foreach.
public delegate bool BufferProbeCallback (Pad pad, Buffer buffer)
public delegate bool BusFunc (Bus bus, Message message)
Specifies the type of function passed to gst_bus_add_watch or add_watch_full, which is called from the mainloop when a message is available on the bus.
public delegate BusSyncReply BusSyncHandler (Bus bus, Message message)
Handler will be invoked synchronously, when a new message has been injected into the bus.
public delegate bool ClockCallback (Clock clock, ClockTime time, ClockID id)
The function prototype of the callback.
public delegate void* CopyFunction (void* object)
A function to create a copy of some object or increase its reference count.
public delegate bool DataProbeCallback (Pad pad, MiniObject data)
public delegate void DebugFuncPtr ()
public delegate bool EventProbeCallback (Pad pad, Event event)
public delegate bool FilterFunc (void* obj)
Function prototype for a filter callback that can be use in filter_run.
public delegate bool IndexFilter (Index index, IndexEntry entry)
Function to filter out entries in the index.
public delegate bool IndexResolver (Index index, Object writer, string writer_string)
Function to resolve ids to writer descriptions.
public delegate void IteratorDisposeFunction (void* owner)
The function that will be called when a List iterator is freed.
public delegate bool IteratorFoldFunction (T item, ref Value ret)
A function to be passed to fold.
public delegate void IteratorFreeFunction (Iterator it)
This function will be called when the iterator is freed.
public delegate IteratorItem IteratorItemFunction (Iterator it, out T item)
The function that will be called after the next item of the iterator has been retrieved.
public delegate IteratorResult IteratorNextFunction (Iterator it, out T result)
The function that will be called when the next element of the iterator should be retrieved.
public delegate void IteratorResyncFunction (Iterator it)
This function will be called whenever a concurrent update happened to the iterated datastructure.
public delegate void LogFunction (DebugCategory category, DebugLevel level, string file, string function, int line, Object object, DebugMessage message)
Function prototype for a logging function that can be registered with debug_add_log_function.
public delegate weak MiniObject MiniObjectCopyFunction (MiniObject obj)
Virtual function prototype for methods to create copies of instances.
public delegate void MiniObjectFinalizeFunction (MiniObject obj)
Virtual function prototype for methods to free ressources used by mini-objects.
public delegate void MiniObjectWeakNotify (void* data, MiniObject where_the_mini_object_was)
A MiniObjectWeakNotify function can be added to a mini object as a callback that gets triggered when the mini object is finalized.
public delegate bool PadAcceptCapsFunction (Pad pad, Caps caps)
Check if pad can accept caps.
public delegate bool PadActivateFunction (Pad pad)
This function is called when the pad is activated during the element READY to PAUSED state change.
public delegate bool PadActivateModeFunction (Pad pad, bool active)
The prototype of the push and pull activate functions.
public delegate void PadBlockCallback (Pad pad, bool blocked)
Callback used by gst_pad_set_blocked_async.
public delegate FlowReturn PadBufferAllocFunction (Pad pad, uint64 offset, uint size, Caps caps, out Buffer buf)
Ask the sinkpad pad to allocate a buffer with offset, size and caps.
public delegate FlowReturn PadChainFunction (Pad pad, owned Buffer buffer)
A function that will be called on sinkpads when chaining buffers.
public delegate FlowReturn PadChainListFunction (Pad pad, owned BufferList list)
A function that will be called on sinkpads when chaining buffer lists.
public delegate bool PadCheckGetRangeFunction (Pad pad)
Check if pad can be activated in pull mode.
public delegate bool PadDispatcherFunction (Pad pad)
A dispatcher function is called for all internally linked pads, see dispatcher.
public delegate bool PadEventFunction (Pad pad, owned Event event)
Function signature to handle an event for the pad.
public delegate void PadFixateCapsFunction (Pad pad, Caps caps)
Given possibly unfixed caps caps, let pad use its default preferred format to make a fixed caps.
public delegate Caps PadGetCapsFunction (Pad pad)
Returns a copy of the capabilities of the specified pad.
public delegate FlowReturn PadGetRangeFunction (Pad pad, uint64 offset, uint length, out Buffer buffer)
This function will be called on source pads when a peer element request a buffer at the specified offset and length.
public delegate List<Pad> PadIntLinkFunction (Pad pad)
The signature of the internal pad link function.
public delegate Iterator<Pad> PadIterIntLinkFunction (Pad pad)
The signature of the internal pad link iterator function.
public delegate PadLinkReturn PadLinkFunction (Pad pad, Pad peer)
Function signature to handle a new link on the pad.
public delegate bool PadQueryFunction (Pad pad, Query query)
The signature of the query function.
public delegate QueryType PadQueryTypeFunction (Pad pad)
The signature of the query types function.
public delegate bool PadSetCapsFunction (Pad pad, Caps caps)
Set caps on pad.
public delegate void PadUnlinkFunction (Pad pad)
Function signature to handle a unlinking the pad prom its peer.
public delegate bool PluginFeatureFilter (PluginFeature feature)
A function that can be used with e.g. feature_filter to get a list of pluginfeature that match certain criteria.
public delegate bool PluginFilter (Plugin plugin)
A function that can be used with e.g. plugin_filter to get a list of plugins that match certain criteria.
public delegate bool PluginInitFullFunc (Plugin plugin)
A plugin should provide a pointer to a function of either PluginInitFunc or this type in the plugin_desc struct.
public delegate bool PluginInitFunc (Plugin plugin)
A plugin should provide a pointer to a function of this type in the plugin_desc struct.
public delegate bool StructureForeachFunc (Quark field_id, Value value)
A function that will be called in @foreach.
public delegate bool StructureMapFunc (Quark field_id, ref Value value)
A function that will be called in map_in_place.
public delegate void TagForeachFunc (TagList list, string tag)
A function that will be called in @foreach.
public delegate void TagMergeFunc (Value dest, Value src)
A function for merging multiple values of a tag used when registering tags.
public delegate void TaskFunction ()
A function that will repeatedly be called in the thread created by a Task.
public delegate void TaskPoolFunction ()
Task function, see push.
public delegate void TypeFindFunction (TypeFind find)
A function that will be called by typefinding.
public delegate int ValueCompareFunc (Value value1, Value value2)
Used together with compare to compare Value items.
public delegate bool ValueDeserializeFunc (Value dest, string s)
Used by deserialize to parse a non-binary form into the Value.
public delegate bool ValueIntersectFunc (Value dest, Value value1, Value value2)
Used by intersect to perform intersection for a specific Value type.
public delegate unowned string ValueSerializeFunc (Value value1)
Used by serialize to obtain a non-binary form of the Value.
public delegate bool ValueSubtractFunc (Value dest, Value minuend, Value subtrahend)
Used by subtract to perform subtraction for a specific Value type.
public delegate bool ValueUnionFunc (Value dest, Value value1, Value value2)
Used by union to perform unification for a specific Value type.

Functions:

public void atomic_int_set (int atomic_int, int value)
Unconditionally sets the atomic integer to value.
public Quark core_error_quark ()
public void debug_add_log_function (LogFunction func, void* data)
Adds the logging function to the list of logging functions.
public void debug_bin_to_dot_file (Bin bin, DebugGraphDetails details, string prefix)
public void debug_bin_to_dot_file_with_ts (Bin bin, DebugGraphDetails details, string prefix)
public unowned string debug_construct_term_color (uint colorinfo)
Constructs a string that can be used for getting the desired color in color terminals.
public int debug_construct_win_color (uint colorinfo)
Constructs an integer that can be used for getting the desired color in windows' terminals (cmd.
public SList<DebugCategory> debug_get_all_categories ()
Returns a snapshot of a all categories that are currently in use .
public DebugLevel debug_get_default_threshold ()
Returns the default threshold that is used for new categories.
public bool debug_is_active ()
Checks if debugging output is activated.
public bool debug_is_colored ()
Checks if the debugging output should be colored.
public void debug_log (DebugCategory category, DebugLevel level, string file, string function, int line, Object object, string format)
Logs the given message using the currently registered debugging handlers.
public void debug_log_default (DebugCategory category, DebugLevel level, string file, string function, int line, Object object, DebugMessage message, void* unused)
The default logging handler used by GStreamer.
public void debug_log_valist (DebugCategory category, DebugLevel level, string file, string function, int line, Object object, string format, void* args)
Logs the given message using the currently registered debugging handlers.
public void debug_print_stack_trace ()
If GST_ENABLE_FUNC_INSTRUMENTATION is defined a stacktrace is available for gstreamer code, which can be printed with this function.
public uint debug_remove_log_function (LogFunction func)
Removes all registered instances of the given logging functions.
public uint debug_remove_log_function_by_data (void* data)
Removes all registered instances of log functions with the given user data.
public void debug_set_active (bool active)
If activated, debugging messages are sent to the debugging handlers.
public void debug_set_colored (bool colored)
Sets or unsets the use of coloured debugging output.
public void debug_set_default_threshold (DebugLevel level)
Sets the default threshold to the given level and updates all categories to use this threshold.
public void debug_set_threshold_for_name (string name, DebugLevel level)
Sets all categories which match the given glob style pattern to the given level.
public void debug_unset_threshold_for_name (string name)
Resets all categories with the given name back to the default level.
public bool default_registry_check_feature_version (string feature_name, uint min_major, uint min_minor, uint min_micro)
Checks whether a plugin feature by the given name exists in the default registry and whether its version is at least the version required.
public void deinit ()
Clean up any resources created by GStreamer in init.
public Type double_range_get_type ()
public string error_get_message (Quark domain, int code)
Get a string describing the error message in the current locale.
public unowned string filename_to_uri (string filename) throws Error
Similar to to_uri, but attempts to handle relative file paths as well.
public List filter_run (List list, FilterFunc func, bool first)
Iterates over the elements in list, calling func with the list item data for each item.
public Quark flow_to_quark (FlowReturn ret)
Get the unique quark for the given GstFlowReturn.
public Format format_get_by_nick (string nick)
Return the format registered with the given nick.
public FormatDefinition format_get_details (Format format)
public Iterator<FormatDefinition> format_iterate_definitions ()
Iterate all the registered formats.
public Format format_register (string nick, string description)
Create a new GstFormat based on the nick or return an already registered format with that nick.
public Quark format_to_quark (Format format)
public bool formats_contains (Format formats, Format format)
See if the given format is inside the format array.
public Type fourcc_get_type ()
public Type fraction_get_type ()
public Type fraction_range_get_type ()
public void init (ref string[] argv)
Initializes the GStreamer library, setting up internal path lists, registering built-in elements, and loading standard plugins.
public bool init_check (ref string[] argv) throws Error
Initializes the GStreamer library, setting up internal path lists, registering built-in elements, and loading standard plugins.
public OptionGroup init_get_option_group ()
Returns a OptionGroup with GStreamer's argument specifications.
public Type int64_range_get_type ()
public Type int_range_get_type ()
public bool is_initialized ()
Use this function to check if GStreamer has been initialized with init or init_check .
public bool is_tag_list (void* p)
Checks if the given pointer is a taglist.
public Quark library_error_quark ()
public void marshal_BOOLEAN__POINTER (Closure closure, Value return_value, uint n_param_values, Value param_values, void* invocation_hint, void* marshal_data)
public void marshal_BOOLEAN__VOID (Closure closure, Value return_value, uint n_param_values, Value param_values, void* invocation_hint, void* marshal_data)
public void marshal_BOXED__BOXED (Closure closure, Value return_value, uint n_param_values, Value param_values, void* invocation_hint, void* marshal_data)
public void marshal_POINTER__POINTER (Closure closure, Value return_value, uint n_param_values, Value param_values, void* invocation_hint, void* marshal_data)
public void marshal_VOID__BOXED_OBJECT (Closure closure, Value return_value, uint n_param_values, Value param_values, void* invocation_hint, void* marshal_data)
public void marshal_VOID__INT64 (Closure closure, Value return_value, uint n_param_values, Value param_values, void* invocation_hint, void* marshal_data)
public void marshal_VOID__INT_INT (Closure closure, Value return_value, uint n_param_values, Value param_values, void* invocation_hint, void* marshal_data)
public void marshal_VOID__OBJECT_BOXED (Closure closure, Value return_value, uint n_param_values, Value param_values, void* invocation_hint, void* marshal_data)
public void marshal_VOID__OBJECT_BOXED_STRING (Closure closure, Value return_value, uint n_param_values, Value param_values, void* invocation_hint, void* marshal_data)
public void marshal_VOID__OBJECT_OBJECT (Closure closure, Value return_value, uint n_param_values, Value param_values, void* invocation_hint, void* marshal_data)
public void marshal_VOID__OBJECT_OBJECT_STRING (Closure closure, Value return_value, uint n_param_values, Value param_values, void* invocation_hint, void* marshal_data)
public void marshal_VOID__OBJECT_PARAM (Closure closure, Value return_value, uint n_param_values, Value param_values, void* invocation_hint, void* marshal_data)
public void marshal_VOID__OBJECT_POINTER (Closure closure, Value return_value, uint n_param_values, Value param_values, void* invocation_hint, void* marshal_data)
public void marshal_VOID__OBJECT_STRING (Closure closure, Value return_value, uint n_param_values, Value param_values, void* invocation_hint, void* marshal_data)
public void marshal_VOID__POINTER_OBJECT (Closure closure, Value return_value, uint n_param_values, Value param_values, void* invocation_hint, void* marshal_data)
public void marshal_VOID__UINT_BOXED (Closure closure, Value return_value, uint n_param_values, Value param_values, void* invocation_hint, void* marshal_data)
public weak ParamSpec param_spec_fraction (string name, string nick, string blurb, int min_num, int min_denom, int max_num, int max_denom, int default_num, int default_denom, ParamFlags flags)
This function creates a fraction GParamSpec for use by objects/elements that want to expose properties of fraction type.
public weak ParamSpec param_spec_mini_object (string name, string nick, string blurb, Type object_type, ParamFlags flags)
Creates a new ParamSpec instance that hold MiniObject references.
public Element? parse_bin_from_description (string bin_description, bool ghost_unlinked_pads) throws Error
This is a convenience wrapper around parse_launch to create a Bin from a gst-launch-style pipeline description.
public Element? parse_bin_from_description_full (string bin_description, bool ghost_unlinked_pads, ParseContext? context, ParseFlags flags) throws Error
This is a convenience wrapper around parse_launch to create a Bin from a gst-launch-style pipeline description.
public Quark parse_error_quark ()
Get the error quark used by the parsing subsystem.
public Element? parse_launch (string pipeline_description) throws Error
Create a new pipeline based on command line syntax.
public Element? parse_launch_full (string pipeline_description, ParseContext? context, ParseFlags flags) throws Error
Create a new pipeline based on command line syntax.
public Element? parse_launchv (string[] argv) throws Error
Create a new element based on command line syntax.
public Element? parse_launchv_full (string[] argv, ParseContext? context, ParseFlags flags) throws Error
Create a new element based on command line syntax.
public void print_element_args (StringBuilder buf, int indent, Element element)
Print the element argument in a human readable format in the given GString.
public void print_pad_caps (StringBuilder buf, int indent, Pad pad)
Write the pad capabilities in a human readable format into the given GString.
public Quark resource_error_quark ()
public bool segtrap_is_enabled ()
Some functions in the GStreamer core might install a custom SIGSEGV handler to better catch and report errors to the application.
public void segtrap_set_enabled (bool enabled)
Applications might want to disable/enable the SIGSEGV handling of the GStreamer core.
public Quark stream_error_quark ()
public bool tag_exists (string tag)
Checks if the given type is already registered.
public unowned string tag_get_description (string tag)
Returns the human-readable description of this tag, You must not change or free this string.
public TagFlag tag_get_flag (string tag)
Gets the flag of tag.
public unowned string tag_get_nick (string tag)
Returns the human-readable name of this tag, You must not change or free this string.
public Type tag_get_type (string tag)
Gets the Type used for this tag.
public bool tag_is_fixed (string tag)
Checks if the given tag is fixed.
public void tag_merge_strings_with_comma (Value dest, Value src)
This is a convenience function for the func argument of tag_register.
public void tag_merge_use_first (Value dest, Value src)
This is a convenience function for the func argument of tag_register.
public void tag_register (string name, TagFlag flag, Type type, string nick, string blurb, TagMergeFunc func)
Registers a new tag type for the use with GStreamer's type system.
public bool update_registry ()
Forces GStreamer to re-scan its plugin paths and update the default plugin registry.
public unowned string uri_construct (string protocol, string location)
Constructs a URI for a given valid protocol and location.
public unowned string uri_get_location (string uri)
Extracts the location out of a given valid URI, ie.
public unowned string uri_get_protocol (string uri)
Extracts the protocol out of a given valid URI.
public bool uri_has_protocol (string uri, string protocol)
Checks if the protocol of a given valid URI matches protocol.
public bool uri_is_valid (string uri)
Tests if the given string is a valid URI identifier.
public bool uri_protocol_is_supported (URIType type, string protocol)
Checks if an element exists that supports the given URI protocol.
public bool uri_protocol_is_valid (string protocol)
Tests if the given string is a valid protocol identifier.
public void* util_array_binary_search (void* array, uint num_elements, size_t element_size, CompareDataFunc search_func, SearchMode mode, void* search_data)
Searches inside array for search_data by using the comparison function search_func.
public void util_double_to_fraction (double src, int dest_n, int dest_d)
Transforms a double to a fraction and simplifies the result.
public void util_dump_mem (uchar[] mem, uint size)
Dumps the memory block into a hex representation.
public bool util_fraction_add (int a_n, int a_d, int b_n, int b_d, int res_n, int res_d)
Adds the fractions a_n/a_d and b_n/ b_d and stores the result in res_n and res_d.
public int util_fraction_compare (int a_n, int a_d, int b_n, int b_d)
Compares the fractions a_n/a_d and b_n/b_d and returns -1 if a < b, 0 if a = b and 1 if a > b.
public bool util_fraction_multiply (int a_n, int a_d, int b_n, int b_d, int res_n, int res_d)
Multiplies the fractions a_n/a_d and b_n/b_d and stores the result in res_n and res_d.
public void util_fraction_to_double (int src_n, int src_d, double dest)
Transforms a fraction to a double.
public uint64 util_gdouble_to_guint64 (double value)
public ClockTime util_get_timestamp ()
Get a timestamp as GstClockTime to be used for interval measurements.
public int util_greatest_common_divisor (int a, int b)
Calculates the greatest common divisor of a and b.
public double util_guint64_to_gdouble (uint64 value)
public int32 util_seqnum_compare (uint32 s1, uint32 s2)
Compare two sequence numbers, handling wraparound.
public uint32 util_seqnum_next ()
Return a constantly incrementing sequence number.
public void util_set_object_arg (Object object, string name, string value)
Convertes the string value to the type of the objects argument and sets the argument with it.
public void util_set_value_from_string (Value value, string value_str)
Converts the string to the type of the value and sets the value with it.
public uint64 util_uint64_scale (uint64 val, uint64 num, uint64 denom)
Scale val by the rational number num / denom, avoiding overflows and underflows and without loss of precision.
public uint64 util_uint64_scale_ceil (uint64 val, uint64 num, uint64 denom)
Scale val by the rational number num / denom, avoiding overflows and underflows and without loss of precision.
public uint64 util_uint64_scale_int (uint64 val, int num, int denom)
Scale val by the rational number num / denom, avoiding overflows and underflows and without loss of precision.
public uint64 util_uint64_scale_int_ceil (uint64 val, int num, int denom)
Scale val by the rational number num / denom, avoiding overflows and underflows and without loss of precision.
public uint64 util_uint64_scale_int_round (uint64 val, int num, int denom)
Scale val by the rational number num / denom, avoiding overflows and underflows and without loss of precision.
public uint64 util_uint64_scale_round (uint64 val, uint64 num, uint64 denom)
Scale val by the rational number num / denom, avoiding overflows and underflows and without loss of precision.
public weak MiniObject value_dup_mini_object (Value value)
Get the contents of a typeof ( MiniObject) derived Value, increasing its reference count.
public int64 value_get_int64_range_max (Value value)
Gets the maximum of the range specified by value.
public int64 value_get_int64_range_min (Value value)
Gets the minimum of the range specified by value.
public void value_list_merge (Value dest, Value value1, Value value2)
Merges copies of value1 and value2.
public void value_set_int64_range (Value value, int64 start, int64 end)
Sets value to the range specified by start and end.
public void version (out uint major, out uint minor, out uint micro, out uint nano)
Gets the version number of the GStreamer library.
public string version_string ()
This function returns a string that is useful for describing this version of GStreamer to the outside world: user agent strings, logging, ...