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94 lines
3.3 KiB
C
94 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_EXPORT
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GType gst_push_src_get_type (void);
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#ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstPushSrc, gst_object_unref)
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#endif
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G_END_DECLS
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#endif /* __GST_PUSH_SRC_H__ */
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