Copyright | Will Thompson Iñaki García Etxebarria and Jonas Platte |
---|---|
License | LGPL-2.1 |
Maintainer | Iñaki García Etxebarria (inaki@blueleaf.cc) |
Safe Haskell | None |
Language | Haskell2010 |
AudioFilter
is a BaseTransform
<!-- -->-derived base class for simple audio
filters, ie. those that output the same format that they get as input.
AudioFilter
will parse the input format for you (with error checking)
before calling your setup function. Also, elements deriving from
AudioFilter
may use audioFilterClassAddPadTemplates
from
their class_init function to easily configure the set of caps/formats that
the element is able to handle.
Derived classes should override the AudioFilterClass
.setup
() and
BaseTransformClass
.transform_ip
() and/or
BaseTransformClass
.transform
()
virtual functions in their class_init function.
Synopsis
- newtype AudioFilter = AudioFilter (ManagedPtr AudioFilter)
- class (GObject o, IsDescendantOf AudioFilter o) => IsAudioFilter o
- toAudioFilter :: (MonadIO m, IsAudioFilter o) => o -> m AudioFilter
- noAudioFilter :: Maybe AudioFilter
Exported types
newtype AudioFilter Source #
Memory-managed wrapper type.
Instances
GObject AudioFilter Source # | |
Defined in GI.GstAudio.Objects.AudioFilter gobjectType :: IO GType # | |
HasParentTypes AudioFilter Source # | |
Defined in GI.GstAudio.Objects.AudioFilter | |
type ParentTypes AudioFilter Source # | |
Defined in GI.GstAudio.Objects.AudioFilter |
class (GObject o, IsDescendantOf AudioFilter o) => IsAudioFilter o Source #
Type class for types which can be safely cast to AudioFilter
, for instance with toAudioFilter
.
Instances
(GObject o, IsDescendantOf AudioFilter o) => IsAudioFilter o Source # | |
Defined in GI.GstAudio.Objects.AudioFilter |
toAudioFilter :: (MonadIO m, IsAudioFilter o) => o -> m AudioFilter Source #
Cast to AudioFilter
, for types for which this is known to be safe. For general casts, use castTo
.
noAudioFilter :: Maybe AudioFilter Source #
A convenience alias for Nothing
:: Maybe
AudioFilter
.