1/* GStreamer
2 * Copyright (C) 2007 David Schleef <[email protected]>
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 */
19
20#ifndef _GST_APP_SINK_H_
21#define _GST_APP_SINK_H_
22
23#include <gst/gst.h>
24#include <gst/base/gstbasesink.h>
25#include <gst/app/app-prelude.h>
26
27G_BEGIN_DECLS
28
29#define GST_TYPE_APP_SINK \
30 (gst_app_sink_get_type())
31#define GST_APP_SINK(obj) \
32 (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_APP_SINK,GstAppSink))
33#define GST_APP_SINK_CLASS(klass) \
34 (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_APP_SINK,GstAppSinkClass))
35#define GST_IS_APP_SINK(obj) \
36 (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_APP_SINK))
37#define GST_IS_APP_SINK_CLASS(klass) \
38 (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_APP_SINK))
39#define GST_APP_SINK_CAST(obj) \
40 ((GstAppSink*)(obj))
41
42typedef struct _GstAppSink GstAppSink;
43typedef struct _GstAppSinkClass GstAppSinkClass;
44typedef struct _GstAppSinkPrivate GstAppSinkPrivate;
45
46/* FIXME 2.0: Make the instance/class struct private */
47
48/**
49 * GstAppSinkCallbacks: (skip)
50 * @eos: Called when the end-of-stream has been reached. This callback
51 * is called from the streaming thread.
52 * @new_preroll: Called when a new preroll sample is available.
53 * This callback is called from the streaming thread.
54 * The new preroll sample can be retrieved with
55 * gst_app_sink_pull_preroll() either from this callback
56 * or from any other thread.
57 * @new_sample: Called when a new sample is available.
58 * This callback is called from the streaming thread.
59 * The new sample can be retrieved with
60 * gst_app_sink_pull_sample() either from this callback
61 * or from any other thread.
62 * @new_event: Called when a new event is available.
63 * This callback is called from the streaming thread.
64 * The new event can be retrieved with
65 * gst_app_sink_pull_event() either from this callback
66 * or from any other thread.
67 * The callback should return %TRUE if the event has been handled,
68 * %FALSE otherwise.
69 * Since: 1.20
70 *
71 * A set of callbacks that can be installed on the appsink with
72 * gst_app_sink_set_callbacks().
73 */
74typedef struct {
75 void (*eos) (GstAppSink *appsink, gpointer user_data);
76 GstFlowReturn (*new_preroll) (GstAppSink *appsink, gpointer user_data);
77 GstFlowReturn (*new_sample) (GstAppSink *appsink, gpointer user_data);
78 gboolean (*new_event) (GstAppSink *appsink, gpointer user_data);
79
80 /*< private >*/
81 gpointer _gst_reserved[GST_PADDING - 1];
82} GstAppSinkCallbacks;
83
84struct _GstAppSink
85{
86 GstBaseSink basesink;
87
88 /*< private >*/
89 GstAppSinkPrivate *priv;
90
91 /*< private >*/
92 gpointer _gst_reserved[GST_PADDING];
93};
94
95struct _GstAppSinkClass
96{
97 GstBaseSinkClass basesink_class;
98
99 /* signals */
100 void (*eos) (GstAppSink *appsink);
101 GstFlowReturn (*new_preroll) (GstAppSink *appsink);
102 GstFlowReturn (*new_sample) (GstAppSink *appsink);
103 /* new_event is missing as we ran out padding */
104
105 /* actions */
106 GstSample * (*pull_preroll) (GstAppSink *appsink);
107 GstSample * (*pull_sample) (GstAppSink *appsink);
108 GstSample * (*try_pull_preroll) (GstAppSink *appsink, GstClockTime timeout);
109 GstSample * (*try_pull_sample) (GstAppSink *appsink, GstClockTime timeout);
110 /**
111 * GstAppSinkClass::try_pull_object:
112 *
113 * See #GstAppSink::try-pull-object: signal.
114 *
115 * Since: 1.20
116 */
117 GstMiniObject * (*try_pull_object) (GstAppSink *appsink, GstClockTime timeout);
118
119 /*< private >*/
120 gpointer _gst_reserved[GST_PADDING - 3];
121};
122
123GST_APP_API
124GType gst_app_sink_get_type (void);
125
126GST_APP_API
127void gst_app_sink_set_caps (GstAppSink *appsink, const GstCaps *caps);
128
129GST_APP_API
130GstCaps * gst_app_sink_get_caps (GstAppSink *appsink);
131
132GST_APP_API
133gboolean gst_app_sink_is_eos (GstAppSink *appsink);
134
135GST_APP_API
136void gst_app_sink_set_emit_signals (GstAppSink *appsink, gboolean emit);
137
138GST_APP_API
139gboolean gst_app_sink_get_emit_signals (GstAppSink *appsink);
140
141GST_APP_API
142void gst_app_sink_set_max_buffers (GstAppSink *appsink, guint max);
143
144GST_APP_API
145guint gst_app_sink_get_max_buffers (GstAppSink *appsink);
146
147GST_APP_API
148void gst_app_sink_set_drop (GstAppSink *appsink, gboolean drop);
149
150GST_APP_API
151gboolean gst_app_sink_get_drop (GstAppSink *appsink);
152
153GST_APP_API
154void gst_app_sink_set_buffer_list_support (GstAppSink *appsink, gboolean enable_lists);
155
156GST_APP_API
157gboolean gst_app_sink_get_buffer_list_support (GstAppSink *appsink);
158
159GST_APP_API
160void gst_app_sink_set_wait_on_eos (GstAppSink *appsink, gboolean wait);
161
162GST_APP_API
163gboolean gst_app_sink_get_wait_on_eos (GstAppSink *appsink);
164
165GST_APP_API
166GstSample * gst_app_sink_pull_preroll (GstAppSink *appsink);
167
168GST_APP_API
169GstSample * gst_app_sink_pull_sample (GstAppSink *appsink);
170
171GST_APP_API
172GstMiniObject * gst_app_sink_pull_object (GstAppSink *appsink);
173
174GST_APP_API
175GstSample * gst_app_sink_try_pull_preroll (GstAppSink *appsink, GstClockTime timeout);
176
177GST_APP_API
178GstSample * gst_app_sink_try_pull_sample (GstAppSink *appsink, GstClockTime timeout);
179
180GST_APP_API
181GstMiniObject * gst_app_sink_try_pull_object (GstAppSink *appsink, GstClockTime timeout);
182
183GST_APP_API
184void gst_app_sink_set_callbacks (GstAppSink * appsink,
185 GstAppSinkCallbacks *callbacks,
186 gpointer user_data,
187 GDestroyNotify notify);
188
189G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstAppSink, gst_object_unref)
190
191G_END_DECLS
192
193#endif
194
195

source code of include/gstreamer-1.0/gst/app/gstappsink.h