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Since we started depending on GLib 2.44, we can be sure this macro is defined (it will be a no-op on compilers that don't support it). For plugins we should just start using `G_DECLARE_FINAL_TYPE` which means we no longer need the macro there, but for most types in base/gst-libs we don't want to break ABI, which means it's better to just keep it like it is (and use the `#ifdef` instead).
107 lines
3.6 KiB
C
107 lines
3.6 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_AUDIO_AUDIO_H__
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#include <gst/audio/audio.h>
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#endif
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#ifndef __GST_AUDIO_FILTER_H__
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#define __GST_AUDIO_FILTER_H__
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#include <gst/gst.h>
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#include <gst/base/gstbasetransform.h>
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G_BEGIN_DECLS
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typedef struct _GstAudioFilter GstAudioFilter;
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typedef struct _GstAudioFilterClass GstAudioFilterClass;
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#define GST_TYPE_AUDIO_FILTER \
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(gst_audio_filter_get_type())
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#define GST_AUDIO_FILTER(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_FILTER,GstAudioFilter))
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#define GST_AUDIO_FILTER_CAST(obj) \
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((GstAudioFilter *) (obj))
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#define GST_AUDIO_FILTER_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AUDIO_FILTER,GstAudioFilterClass))
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#define GST_AUDIO_FILTER_CLASS_CAST(klass) \
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((GstAudioFilterClass *) (klass))
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#define GST_AUDIO_FILTER_GET_CLASS(obj) \
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(G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_AUDIO_FILTER,GstAudioFilterClass))
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#define GST_IS_AUDIO_FILTER(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_FILTER))
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#define GST_IS_AUDIO_FILTER_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AUDIO_FILTER))
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/**
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* GstAudioFilter:
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*
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* Base class for audio filters with the same format for input and output.
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*/
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struct _GstAudioFilter {
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GstBaseTransform basetransform;
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/*< protected >*/
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GstAudioInfo info; /* currently configured format */
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING];
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};
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#define GST_AUDIO_FILTER_INFO(filter) (&GST_AUDIO_FILTER_CAST(filter)->info)
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#define GST_AUDIO_FILTER_FORMAT(filter) (GST_AUDIO_INFO_FORMAT(GST_AUDIO_FILTER_INFO(filter)))
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#define GST_AUDIO_FILTER_RATE(filter) (GST_AUDIO_INFO_RATE(GST_AUDIO_FILTER_INFO(filter)))
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#define GST_AUDIO_FILTER_CHANNELS(filter) (GST_AUDIO_INFO_CHANNELS(GST_AUDIO_FILTER_INFO(filter)))
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#define GST_AUDIO_FILTER_BPF(filter) (GST_AUDIO_INFO_BPF(GST_AUDIO_FILTER_INFO(filter)))
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#define GST_AUDIO_FILTER_BPS(filter) (GST_AUDIO_INFO_BPS(GST_AUDIO_FILTER_INFO(filter)))
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/**
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* GstAudioFilterClass:
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* @basetransformclass: parent class
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* @setup: virtual function called whenever the format changes
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*
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* In addition to the @setup virtual function, you should also override the
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* GstBaseTransform::transform and/or GstBaseTransform::transform_ip virtual
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* function.
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*/
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struct _GstAudioFilterClass {
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GstBaseTransformClass basetransformclass;
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/* virtual function, called whenever the format changes */
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gboolean (*setup) (GstAudioFilter * filter, const GstAudioInfo * info);
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING];
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};
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GST_AUDIO_API
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GType gst_audio_filter_get_type (void);
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GST_AUDIO_API
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void gst_audio_filter_class_add_pad_templates (GstAudioFilterClass * klass,
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GstCaps * allowed_caps);
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstAudioFilter, gst_object_unref)
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G_END_DECLS
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#endif /* __GST_AUDIO_FILTER_H__ */
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