2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2000 Wim Taymans <wtay@chello.be>
5 * gstsample.h: Header for GstSample object
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
24 #ifndef __GST_SAMPLE_H__
25 #define __GST_SAMPLE_H__
27 #include <gst/gstbuffer.h>
28 #include <gst/gstbufferlist.h>
29 #include <gst/gstcaps.h>
30 #include <gst/gstsegment.h>
34 GST_EXPORT GType _gst_sample_type;
36 #define GST_TYPE_SAMPLE (_gst_sample_type)
37 #define GST_IS_SAMPLE(obj) (GST_IS_MINI_OBJECT_TYPE(obj, GST_TYPE_SAMPLE))
38 #define GST_SAMPLE_CAST(obj) ((GstSample *)obj)
39 #define GST_SAMPLE(obj) (GST_SAMPLE_CAST(obj))
44 * The opaque structure of a #GstSample. A sample contains a typed memory
45 * block and the associated timing information. It is mainly used to
46 * exchange buffers with an application.
48 typedef struct _GstSample GstSample;
51 GType gst_sample_get_type (void);
56 GstSample * gst_sample_new (GstBuffer *buffer,
58 const GstSegment *segment,
61 GstBuffer * gst_sample_get_buffer (GstSample *sample);
64 GstCaps * gst_sample_get_caps (GstSample *sample);
67 GstSegment * gst_sample_get_segment (GstSample *sample);
70 const GstStructure * gst_sample_get_info (GstSample *sample);
73 GstBufferList * gst_sample_get_buffer_list (GstSample *sample);
76 void gst_sample_set_buffer_list (GstSample *sample, GstBufferList *buffer_list);
81 * @sample: a #GstSample
83 * Increases the refcount of the given sample by one.
85 * Returns: (transfer full): @sample
87 static inline GstSample *
88 gst_sample_ref (GstSample * sample)
90 return GST_SAMPLE_CAST (gst_mini_object_ref (GST_MINI_OBJECT_CAST (
96 * @sample: (transfer full): a #GstSample
98 * Decreases the refcount of the sample. If the refcount reaches 0, the
99 * sample will be freed.
102 gst_sample_unref (GstSample * sample)
104 gst_mini_object_unref (GST_MINI_OBJECT_CAST (sample));
110 * @buf: a #GstSample.
112 * Create a copy of the given sample. This will also make a newly allocated
113 * copy of the data the source sample contains.
115 * Returns: (transfer full): a new copy of @buf.
119 static inline GstSample *
120 gst_sample_copy (const GstSample * buf)
122 return GST_SAMPLE_CAST (gst_mini_object_copy (GST_MINI_OBJECT_CONST_CAST (buf)));
126 * gst_value_set_sample:
127 * @v: a #GValue to receive the data
128 * @b: (transfer none): a #GstSample to assign to the GstValue
130 * Sets @b as the value of @v. Caller retains reference to sample.
132 #define gst_value_set_sample(v,b) g_value_set_boxed((v),(b))
134 * gst_value_take_sample:
135 * @v: a #GValue to receive the data
136 * @b: (transfer full): a #GstSample to assign to the GstValue
138 * Sets @b as the value of @v. Caller gives away reference to sample.
140 #define gst_value_take_sample(v,b) g_value_take_boxed(v,(b))
142 * gst_value_get_sample:
143 * @v: a #GValue to query
145 * Receives a #GstSample as the value of @v. Does not return a reference to
146 * the sample, so the pointer is only valid for as long as the caller owns
149 * Returns: (transfer none): sample
151 #define gst_value_get_sample(v) GST_SAMPLE_CAST (g_value_get_boxed(v))
153 #ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
154 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstSample, gst_sample_unref)
159 #endif /* __GST_SAMPLE_H__ */