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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
* 2005 Wim Taymans <wim@fluendo.com>
*
* gstpushsrc.h:
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_PUSH_SRC_H__
#define __GST_PUSH_SRC_H__
#include <gst/gst.h>
#include <gst/base/gstbasesrc.h>
G_BEGIN_DECLS
#define GST_TYPE_PUSH_SRC (gst_push_src_get_type())
#define GST_PUSH_SRC(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PUSH_SRC,GstPushSrc))
#define GST_PUSH_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PUSH_SRC,GstPushSrcClass))
#define GST_PUSH_SRC_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_PUSH_SRC, GstPushSrcClass))
#define GST_IS_PUSH_SRC(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PUSH_SRC))
#define GST_IS_PUSH_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PUSH_SRC))
typedef struct _GstPushSrc GstPushSrc;
typedef struct _GstPushSrcClass GstPushSrcClass;
/**
* GstPushSrc:
*
* The opaque #GstPushSrc data structure.
*/
struct _GstPushSrc {
GstBaseSrc parent;
/*< private >*/
gpointer _gst_reserved[GST_PADDING];
};
/**
* GstPushSrcClass:
* @parent_class: Element parent class
* @create: Ask the subclass to create a buffer. The subclass decides which
* size this buffer should be. Other then that, refer to
* #GstBaseSrc<!-- -->.create() for more details. If this method is
* not implemented, @alloc followed by @fill will be called.
* @alloc: Ask the subclass to allocate a buffer. The subclass decides which
* size this buffer should be. The default implementation will create
* a new buffer from the negotiated allocator.
* @fill: Ask the subclass to fill the buffer with data.
*
* Subclasses can override any of the available virtual methods or not, as
* needed. At the minimum, the @fill method should be overridden to produce
* buffers.
*/
struct _GstPushSrcClass {
GstBaseSrcClass parent_class;
/**
* GstPushSrcClass::create:
* @buf: (inout):
*
* Ask the subclass to create a buffer, the default implementation will call alloc if
* no allocated @buf is provided and then call fill.
*/
GstFlowReturn (*create) (GstPushSrc *src, GstBuffer **buf);
/**
* GstPushSrcClass::alloc:
* @buf: (out):
*
* Allocate memory for a buffer.
*/
GstFlowReturn (*alloc) (GstPushSrc *src, GstBuffer **buf);
/* ask the subclass to fill a buffer */
GstFlowReturn (*fill) (GstPushSrc *src, GstBuffer *buf);
/*< private >*/
gpointer _gst_reserved[GST_PADDING];
};
GST_BASE_API
GType gst_push_src_get_type (void);
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstPushSrc, gst_object_unref)
G_END_DECLS
#endif /* __GST_PUSH_SRC_H__ */
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