mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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9aa009ab45
Provide non-inline version of refcounting APIs so that it can be consumed by bindings Fixes: https://gitlab.freedesktop.org/gstreamer/gstreamer-sharp/-/issues/46 Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/731>
120 lines
3.5 KiB
C
120 lines
3.5 KiB
C
/* GStreamer
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* Copyright (C) 2017 Matthew Waters <matthew@centricular.com>
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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_PROMISE_H__
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#define __GST_PROMISE_H__
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#include <gst/gst.h>
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G_BEGIN_DECLS
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GST_API
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GType gst_promise_get_type(void);
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#define GST_TYPE_PROMISE (gst_promise_get_type())
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#define GST_PROMISE(obj) ((GstPromise *) obj)
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typedef struct _GstPromise GstPromise;
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/**
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* GstPromiseResult:
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* @GST_PROMISE_RESULT_PENDING: Initial state. Waiting for transition to any
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* other state.
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* @GST_PROMISE_RESULT_INTERRUPTED: Interrupted by the consumer as it doesn't
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* want the value anymore.
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* @GST_PROMISE_RESULT_REPLIED: A producer marked a reply
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* @GST_PROMISE_RESULT_EXPIRED: The promise expired (the carrying object
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* lost all refs) and the promise will never be fulfilled.
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*
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* The result of a #GstPromise
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*
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* Since: 1.14
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*/
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typedef enum
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{
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GST_PROMISE_RESULT_PENDING,
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GST_PROMISE_RESULT_INTERRUPTED,
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GST_PROMISE_RESULT_REPLIED,
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GST_PROMISE_RESULT_EXPIRED,
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} GstPromiseResult;
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/**
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* GstPromiseChangeFunc:
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* @promise: a #GstPromise
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* @user_data: (closure): user data
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*
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* Since: 1.14
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*/
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typedef void (*GstPromiseChangeFunc) (GstPromise * promise, gpointer user_data);
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/**
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* GstPromise:
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* @parent: parent #GstMiniObject
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*
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* Since: 1.14
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*/
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struct _GstPromise
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{
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GstMiniObject parent;
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};
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GST_API
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GstPromise * gst_promise_new (void);
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GST_API
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GstPromise * gst_promise_new_with_change_func (GstPromiseChangeFunc func,
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gpointer user_data,
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GDestroyNotify notify);
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GST_API
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GstPromiseResult gst_promise_wait (GstPromise * promise);
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GST_API
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void gst_promise_reply (GstPromise * promise,
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GstStructure * s);
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GST_API
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void gst_promise_interrupt (GstPromise * promise);
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GST_API
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void gst_promise_expire (GstPromise * promise);
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GST_API
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const GstStructure * gst_promise_get_reply (GstPromise * promise);
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#ifndef GST_DISABLE_MINIOBJECT_INLINE_FUNCTIONS
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static inline GstPromise *
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gst_promise_ref (GstPromise * promise)
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{
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return (GstPromise *) gst_mini_object_ref (GST_MINI_OBJECT_CAST (promise));
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}
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static inline void
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gst_promise_unref (GstPromise * promise)
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{
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gst_mini_object_unref (GST_MINI_OBJECT_CAST (promise));
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}
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#else /* GST_DISABLE_MINIOBJECT_INLINE_FUNCTIONS */
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GST_API
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GstPromise * gst_promise_ref (GstPromise * promise);
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GST_API
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void gst_promise_unref (GstPromise * promise);
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#endif /* GST_DISABLE_MINIOBJECT_INLINE_FUNCTIONS */
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstPromise, gst_promise_unref)
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G_END_DECLS
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#endif /* __GST_PROMISE_H__ */
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