mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-03 16:09:39 +00:00
106 lines
3.4 KiB
C
106 lines
3.4 KiB
C
/* GStreamer
|
|
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
|
|
* 2005 Wim Taymans <wim@fluendo.com>
|
|
*
|
|
* gstaudiosrc.h:
|
|
*
|
|
* 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., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef __GST_AUDIO_AUDIO_H__
|
|
#include <gst/audio/audio.h>
|
|
#endif
|
|
|
|
#ifndef __GST_AUDIO_SRC_H__
|
|
#define __GST_AUDIO_SRC_H__
|
|
|
|
#include <gst/gst.h>
|
|
#include <gst/audio/gstaudiobasesrc.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define GST_TYPE_AUDIO_SRC (gst_audio_src_get_type())
|
|
#define GST_AUDIO_SRC(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_SRC,GstAudioSrc))
|
|
#define GST_AUDIO_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AUDIO_SRC,GstAudioSrcClass))
|
|
#define GST_AUDIO_SRC_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj),GST_TYPE_AUDIO_SRC,GstAudioSrcClass))
|
|
#define GST_IS_AUDIO_SRC(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_SRC))
|
|
#define GST_IS_AUDIO_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AUDIO_SRC))
|
|
|
|
typedef struct _GstAudioSrc GstAudioSrc;
|
|
typedef struct _GstAudioSrcClass GstAudioSrcClass;
|
|
|
|
/**
|
|
* GstAudioSrc:
|
|
*
|
|
* Base class for simple audio sources.
|
|
*/
|
|
struct _GstAudioSrc {
|
|
GstAudioBaseSrc element;
|
|
|
|
/*< private >*/ /* with LOCK */
|
|
GThread *thread;
|
|
|
|
/*< private >*/
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
/**
|
|
* GstAudioSrcClass:
|
|
* @parent_class: the parent class.
|
|
* @open: open the device with the specified caps
|
|
* @prepare: configure device with format
|
|
* @unprepare: undo the configuration
|
|
* @close: close the device
|
|
* @read: read samples from the audio device
|
|
* @delay: the number of frames queued in the device
|
|
* @reset: unblock a read to the device and reset.
|
|
*
|
|
* #GstAudioSrc class. Override the vmethod to implement
|
|
* functionality.
|
|
*/
|
|
struct _GstAudioSrcClass {
|
|
GstAudioBaseSrcClass parent_class;
|
|
|
|
/* vtable */
|
|
|
|
/* open the device with given specs */
|
|
gboolean (*open) (GstAudioSrc *src);
|
|
/* prepare resources and state to operate with the given specs */
|
|
gboolean (*prepare) (GstAudioSrc *src, GstAudioRingBufferSpec *spec);
|
|
/* undo anything that was done in prepare() */
|
|
gboolean (*unprepare) (GstAudioSrc *src);
|
|
/* close the device */
|
|
gboolean (*close) (GstAudioSrc *src);
|
|
/* read samples from the device */
|
|
guint (*read) (GstAudioSrc *src, gpointer data, guint length,
|
|
GstClockTime *timestamp);
|
|
/* get number of frames queued in the device */
|
|
guint (*delay) (GstAudioSrc *src);
|
|
/* reset the audio device, unblock from a write */
|
|
void (*reset) (GstAudioSrc *src);
|
|
|
|
/*< private >*/
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
GST_AUDIO_API
|
|
GType gst_audio_src_get_type(void);
|
|
|
|
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstAudioSrc, gst_object_unref)
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_AUDIO_SRC_H__ */
|