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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2005 Wim Taymans <wim@fluendo.com>
*
* gstrinbuffer.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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_RINGBUFFER_H__
#define __GST_RINGBUFFER_H__
#include <gst/gst.h>
G_BEGIN_DECLS
#define GST_TYPE_RINGBUFFER (gst_ringbuffer_get_type())
#define GST_RINGBUFFER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RINGBUFFER,GstRingBuffer))
#define GST_RINGBUFFER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RINGBUFFER,GstRingBufferClass))
#define GST_RINGBUFFER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_RINGBUFFER, GstRingBufferClass))
#define GST_IS_RINGBUFFER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RINGBUFFER))
#define GST_IS_RINGBUFFER_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RINGBUFFER))
typedef struct _GstRingBuffer GstRingBuffer;
typedef struct _GstRingBufferClass GstRingBufferClass;
typedef struct _GstRingBufferSpec GstRingBufferSpec;
typedef void (*GstRingBufferCallback) (GstRingBuffer *rbuf, guint advance, gpointer data);
typedef enum {
GST_RINGBUFFER_STATE_STOPPED,
GST_RINGBUFFER_STATE_PLAYING,
} GstRingBufferState;
typedef enum {
GST_SEGSTATE_INVALID,
GST_SEGSTATE_EMPTY,
GST_SEGSTATE_FILLED,
} GstRingBufferSegState;
struct _GstRingBufferSpec
{
GstCaps *caps;
guint segsize;
guint segtotal;
};
#define GST_RINGBUFFER_GET_COND(buf) (((GstRingBuffer *)buf)->cond)
#define GST_RINGBUFFER_WAIT(buf) (g_cond_wait (GST_RINGBUFFER_GET_COND (buf), GST_GET_LOCK (buf)))
#define GST_RINGBUFFER_SIGNAL(buf) (g_cond_signal (GST_RINGBUFFER_GET_COND (buf)))
struct _GstRingBuffer {
GstObject object;
/*< public >*/ /* with LOCK */
GCond *cond;
gboolean acquired;
GstRingBufferState state;
GstBuffer *data;
GstRingBufferSpec spec;
GstRingBufferSegState *segstate;
gboolean waiters;
gint playseg;
gint writeseg;
gint segfilled;
GstRingBufferCallback callback;
gpointer cb_data;
};
struct _GstRingBufferClass {
GstObjectClass parent_class;
/*< public >*/
gboolean (*acquire) (GstRingBuffer *buf, GstRingBufferSpec *spec);
gboolean (*release) (GstRingBuffer *buf);
gboolean (*play) (GstRingBuffer *buf);
gboolean (*stop) (GstRingBuffer *buf);
};
GType gst_ringbuffer_get_type(void);
void gst_ringbuffer_set_callback (GstRingBuffer *buf, GstRingBufferCallback cb,
gpointer data);
gboolean gst_ringbuffer_acquire (GstRingBuffer *buf, GstRingBufferSpec *spec);
gboolean gst_ringbuffer_release (GstRingBuffer *buf);
gboolean gst_ringbuffer_play (GstRingBuffer *buf);
gboolean gst_ringbuffer_stop (GstRingBuffer *buf);
guint gst_ringbuffer_write (GstRingBuffer *buf, GstClockTime time,
guchar *data, guint len);
void gst_ringbuffer_callback (GstRingBuffer *buf, guint advance);
G_END_DECLS
#endif /* __GST_RINGBUFFER_H__ */
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