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09141c6e1f
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 core we don't want to break ABI, which means it's better to just keep it like it is (and use the `#ifdef` instead).
93 lines
3.3 KiB
C
93 lines
3.3 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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* 2005 Wim Taymans <wim@fluendo.com>
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*
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* gstpushsrc.h:
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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_PUSH_SRC_H__
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#define __GST_PUSH_SRC_H__
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#include <gst/gst.h>
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#include <gst/base/gstbasesrc.h>
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G_BEGIN_DECLS
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#define GST_TYPE_PUSH_SRC (gst_push_src_get_type())
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#define GST_PUSH_SRC(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PUSH_SRC,GstPushSrc))
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#define GST_PUSH_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PUSH_SRC,GstPushSrcClass))
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#define GST_PUSH_SRC_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_PUSH_SRC, GstPushSrcClass))
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#define GST_IS_PUSH_SRC(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PUSH_SRC))
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#define GST_IS_PUSH_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PUSH_SRC))
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typedef struct _GstPushSrc GstPushSrc;
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typedef struct _GstPushSrcClass GstPushSrcClass;
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/**
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* GstPushSrc:
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*
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* The opaque #GstPushSrc data structure.
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*/
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struct _GstPushSrc {
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GstBaseSrc parent;
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING];
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};
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/**
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* GstPushSrcClass:
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* @parent_class: Element parent class
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* @create: Ask the subclass to create a buffer. The subclass decides which
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* size this buffer should be. Other then that, refer to
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* #GstBaseSrc<!-- -->.create() for more details. If this method is
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* not implemented, @alloc followed by @fill will be called.
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* @alloc: Ask the subclass to allocate a buffer. The subclass decides which
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* size this buffer should be. The default implementation will create
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* a new buffer from the negotiated allocator.
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* @fill: Ask the subclass to fill the buffer with data.
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*
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* Subclasses can override any of the available virtual methods or not, as
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* needed. At the minimum, the @fill method should be overridden to produce
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* buffers.
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*/
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struct _GstPushSrcClass {
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GstBaseSrcClass parent_class;
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/* ask the subclass to create a buffer, the default implementation
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* uses alloc and fill */
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GstFlowReturn (*create) (GstPushSrc *src, GstBuffer **buf);
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/* allocate memory for a buffer */
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GstFlowReturn (*alloc) (GstPushSrc *src, GstBuffer **buf);
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/* ask the subclass to fill a buffer */
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GstFlowReturn (*fill) (GstPushSrc *src, GstBuffer *buf);
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING];
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};
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GST_BASE_API
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GType gst_push_src_get_type (void);
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstPushSrc, gst_object_unref)
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G_END_DECLS
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#endif /* __GST_PUSH_SRC_H__ */
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