mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-30 21:51:09 +00:00
117 lines
5.2 KiB
C
117 lines
5.2 KiB
C
/* GStreamer
|
|
*
|
|
* Copyright (C) 2011 Intel
|
|
* Copyright (C) 2011 Collabora Ltd.
|
|
* Author: Nicolas Dufresne <nicolas.dufresne@collabora.co.uk>
|
|
*
|
|
* video-context.h: Video Context interface and helpers
|
|
*
|
|
*
|
|
* 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., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#ifndef __GST_VIDEO_CONTEXT_H__
|
|
#define __GST_VIDEO_CONTEXT_H__
|
|
|
|
#ifndef GST_USE_UNSTABLE_API
|
|
#warning "The GstVideoContext interface is unstable API and may change in future."
|
|
#warning "You can define GST_USE_UNSTABLE_API to avoid this warning."
|
|
#endif
|
|
|
|
#include <gst/gst.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define GST_TYPE_VIDEO_CONTEXT (gst_video_context_iface_get_type ())
|
|
#define GST_VIDEO_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_VIDEO_CONTEXT, GstVideoContext))
|
|
#define GST_IS_VIDEO_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_VIDEO_CONTEXT))
|
|
#define GST_VIDEO_CONTEXT_GET_IFACE(inst) (G_TYPE_INSTANCE_GET_INTERFACE ((inst), GST_TYPE_VIDEO_CONTEXT, GstVideoContextInterface))
|
|
|
|
/**
|
|
* GstVideoContext:
|
|
*
|
|
* Opaque #GstVideoContext data structure.
|
|
*/
|
|
typedef struct _GstVideoContext GstVideoContext;
|
|
typedef struct _GstVideoContextInterface GstVideoContextInterface;
|
|
|
|
/**
|
|
* GstVideoContextInterface:
|
|
* @parent: parent interface type.
|
|
* @set_context: vmethod to set video context.
|
|
*
|
|
* #GstVideoContextInterface interface.
|
|
*/
|
|
struct _GstVideoContextInterface
|
|
{
|
|
GTypeInterface parent;
|
|
|
|
/* virtual functions */
|
|
void (*set_context) (GstVideoContext * context,
|
|
const gchar * type,
|
|
const GValue * value);
|
|
|
|
};
|
|
|
|
GType gst_video_context_iface_get_type (void);
|
|
|
|
/* virtual class method and associated helpers */
|
|
void gst_video_context_set_context (GstVideoContext * context,
|
|
const gchar * type,
|
|
const GValue * value);
|
|
void gst_video_context_set_context_string (GstVideoContext * context,
|
|
const gchar * type,
|
|
const gchar * value);
|
|
void gst_video_context_set_context_pointer (GstVideoContext * context,
|
|
const gchar * type,
|
|
gpointer value);
|
|
void gst_video_context_set_context_object (GstVideoContext * context,
|
|
const gchar * type,
|
|
GObject * value);
|
|
|
|
|
|
/* message helpers */
|
|
void gst_video_context_prepare (GstVideoContext *context,
|
|
const gchar ** types);
|
|
|
|
gboolean gst_video_context_message_parse_prepare (GstMessage * message,
|
|
const gchar *** types,
|
|
GstVideoContext ** ctx);
|
|
|
|
/* query helpers */
|
|
GstQuery * gst_video_context_query_new (const gchar ** types);
|
|
gboolean gst_video_context_run_query (GstElement *element,
|
|
GstQuery *query);
|
|
const gchar ** gst_video_context_query_get_supported_types (GstQuery * query);
|
|
void gst_video_context_query_parse_value (GstQuery * query,
|
|
const gchar ** type,
|
|
const GValue ** value);
|
|
void gst_video_context_query_set_value (GstQuery * query,
|
|
const gchar * type,
|
|
GValue * value);
|
|
void gst_video_context_query_set_string (GstQuery * query,
|
|
const gchar * type,
|
|
const gchar * value);
|
|
void gst_video_context_query_set_pointer (GstQuery * query,
|
|
const gchar * type,
|
|
gpointer value);
|
|
void gst_video_context_query_set_object (GstQuery * query,
|
|
const gchar * type,
|
|
GObject * value);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_VIDEO_CONTEXT_H__ */
|