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/* GStreamer
* Copyright (C) <2007> Wim Taymans <wim.taymans@gmail.com>
*
* 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 __RTP_JITTER_BUFFER_H__
#define __RTP_JITTER_BUFFER_H__
#include <gst/gst.h>
#include <gst/rtp/gstrtcpbuffer.h>
typedef struct _RTPJitterBuffer RTPJitterBuffer;
typedef struct _RTPJitterBufferClass RTPJitterBufferClass;
#define RTP_TYPE_JITTER_BUFFER (rtp_jitter_buffer_get_type())
#define RTP_JITTER_BUFFER(src) (G_TYPE_CHECK_INSTANCE_CAST((src),RTP_TYPE_JITTER_BUFFER,RTPJitterBuffer))
#define RTP_JITTER_BUFFER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),RTP_TYPE_JITTER_BUFFER,RTPJitterBufferClass))
#define RTP_IS_JITTER_BUFFER(src) (G_TYPE_CHECK_INSTANCE_TYPE((src),RTP_TYPE_JITTER_BUFFER))
#define RTP_IS_JITTER_BUFFER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),RTP_TYPE_JITTER_BUFFER))
#define RTP_JITTER_BUFFER_CAST(src) ((RTPJitterBuffer *)(src))
/**
* RTPTailChanged:
* @jbuf: an #RTPJitterBuffer
* @user_data: user data specified when registering
*
* This callback will be called when the tail buffer of @jbuf changed.
*/
typedef void (*RTPTailChanged) (RTPJitterBuffer *jbuf, gpointer user_data);
#define RTP_JITTER_BUFFER_MAX_WINDOW 512
/**
* RTPJitterBuffer:
*
* A JitterBuffer in the #RTPSession
*/
struct _RTPJitterBuffer {
GObject object;
GQueue *packets;
/* for calculating skew */
GstClockTime base_time;
GstClockTime base_rtptime;
guint32 clock_rate;
GstClockTime base_extrtp;
GstClockTime prev_out_time;
guint64 ext_rtptime;
guint64 last_rtptime;
gint64 window[RTP_JITTER_BUFFER_MAX_WINDOW];
guint window_pos;
guint window_size;
gboolean window_filling;
gint64 window_min;
gint64 skew;
gint64 prev_send_diff;
};
struct _RTPJitterBufferClass {
GObjectClass parent_class;
};
GType rtp_jitter_buffer_get_type (void);
/* managing lifetime */
RTPJitterBuffer* rtp_jitter_buffer_new (void);
void rtp_jitter_buffer_reset_skew (RTPJitterBuffer *jbuf);
gboolean rtp_jitter_buffer_insert (RTPJitterBuffer *jbuf, GstBuffer *buf,
GstClockTime time,
guint32 clock_rate,
gboolean *tail);
GstBuffer * rtp_jitter_buffer_peek (RTPJitterBuffer *jbuf);
GstBuffer * rtp_jitter_buffer_pop (RTPJitterBuffer *jbuf);
void rtp_jitter_buffer_flush (RTPJitterBuffer *jbuf);
guint rtp_jitter_buffer_num_packets (RTPJitterBuffer *jbuf);
guint32 rtp_jitter_buffer_get_ts_diff (RTPJitterBuffer *jbuf);
void rtp_jitter_buffer_get_sync (RTPJitterBuffer *jbuf, guint64 *rtptime,
guint64 *timestamp, guint32 *clock_rate,
guint64 *last_rtptime);
#endif /* __RTP_JITTER_BUFFER_H__ */
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