2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2005 Wim Taymans <wim@fluendo.com>
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., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
23 /* a base class for audio sources.
26 #ifndef __GST_BASE_AUDIO_SRC_H__
27 #define __GST_BASE_AUDIO_SRC_H__
30 #include <gst/base/gstpushsrc.h>
31 #include "gstringbuffer.h"
32 #include "gstaudioclock.h"
36 #define GST_TYPE_BASE_AUDIO_SRC (gst_base_audio_src_get_type())
37 #define GST_BASE_AUDIO_SRC(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_BASE_AUDIO_SRC,GstBaseAudioSrc))
38 #define GST_BASE_AUDIO_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_BASE_AUDIO_SRC,GstBaseAudioSrcClass))
39 #define GST_BASE_AUDIO_SRC_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_BASE_AUDIO_SRC, GstBaseAudioSrcClass))
40 #define GST_IS_BASE_AUDIO_SRC(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_BASE_AUDIO_SRC))
41 #define GST_IS_BASE_AUDIO_SRC_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_BASE_AUDIO_SRC))
43 #define GST_BASE_AUDIO_SRC_CLOCK(obj) (GST_BASE_AUDIO_SRC (obj)->clock)
44 #define GST_BASE_AUDIO_SRC_PAD(obj) (GST_BASE_SRC (obj)->srcpad)
46 typedef struct _GstBaseAudioSrc GstBaseAudioSrc;
47 typedef struct _GstBaseAudioSrcClass GstBaseAudioSrcClass;
49 struct _GstBaseAudioSrc {
52 /*< protected >*/ /* with LOCK */
54 GstRingBuffer *ringbuffer;
56 /* required buffer and latency */
57 GstClockTime buffer_time;
58 GstClockTime latency_time;
60 /* the next sample to write */
67 gpointer _gst_reserved[GST_PADDING];
70 struct _GstBaseAudioSrcClass {
71 GstPushSrcClass parent_class;
73 /* subclass ringbuffer allocation */
74 GstRingBuffer* (*create_ringbuffer) (GstBaseAudioSrc *src);
77 gpointer _gst_reserved[GST_PADDING];
80 GType gst_base_audio_src_get_type(void);
82 GstRingBuffer *gst_base_audio_src_create_ringbuffer (GstBaseAudioSrc *src);
86 #endif /* __GST_BASE_AUDIO_SRC_H__ */