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8bbfd94c25
When deactivating jitterbuffers when the buffering starts, keep the current percent of the jitterbuffer and also set the jitterbuffer in the buffering state so that we know when it's filled again. Add property to get the buffering percentage of the jitterbuffer.
136 lines
5.3 KiB
C
136 lines
5.3 KiB
C
/* GStreamer
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* Copyright (C) <2007> Wim Taymans <wim.taymans@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __RTP_JITTER_BUFFER_H__
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#define __RTP_JITTER_BUFFER_H__
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#include <gst/gst.h>
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#include <gst/rtp/gstrtcpbuffer.h>
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typedef struct _RTPJitterBuffer RTPJitterBuffer;
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typedef struct _RTPJitterBufferClass RTPJitterBufferClass;
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#define RTP_TYPE_JITTER_BUFFER (rtp_jitter_buffer_get_type())
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#define RTP_JITTER_BUFFER(src) (G_TYPE_CHECK_INSTANCE_CAST((src),RTP_TYPE_JITTER_BUFFER,RTPJitterBuffer))
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#define RTP_JITTER_BUFFER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),RTP_TYPE_JITTER_BUFFER,RTPJitterBufferClass))
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#define RTP_IS_JITTER_BUFFER(src) (G_TYPE_CHECK_INSTANCE_TYPE((src),RTP_TYPE_JITTER_BUFFER))
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#define RTP_IS_JITTER_BUFFER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),RTP_TYPE_JITTER_BUFFER))
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#define RTP_JITTER_BUFFER_CAST(src) ((RTPJitterBuffer *)(src))
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/**
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* RTPJitterBufferMode:
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*
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* RTP_JITTER_BUFFER_MODE_NONE: don't do any skew correction, outgoing
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* timestamps are calculated directly from the RTP timestamps. This mode is
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* good for recording but not for real-time applications.
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* RTP_JITTER_BUFFER_MODE_SLAVE: calculate the skew between sender and receiver
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* and produce smoothed adjusted outgoing timestamps. This mode is good for
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* low latency communications.
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* RTP_JITTER_BUFFER_MODE_BUFFER: buffer packets between low/high watermarks.
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* This mode is good for streaming communication.
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* RTP_JITTER_BUFFER_MODE_LAST: last buffer mode.
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*
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* The different buffer modes for a jitterbuffer.
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*/
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typedef enum {
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RTP_JITTER_BUFFER_MODE_NONE = 0,
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RTP_JITTER_BUFFER_MODE_SLAVE = 1,
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RTP_JITTER_BUFFER_MODE_BUFFER = 2,
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RTP_JITTER_BUFFER_MODE_LAST
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} RTPJitterBufferMode;
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#define RTP_TYPE_JITTER_BUFFER_MODE (rtp_jitter_buffer_mode_get_type())
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GType rtp_jitter_buffer_mode_get_type (void);
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#define RTP_JITTER_BUFFER_MAX_WINDOW 512
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/**
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* RTPJitterBuffer:
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*
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* A JitterBuffer in the #RTPSession
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*/
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struct _RTPJitterBuffer {
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GObject object;
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GQueue *packets;
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RTPJitterBufferMode mode;
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GstClockTime delay;
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/* for buffering */
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gboolean buffering;
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guint64 low_level;
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guint64 high_level;
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/* for calculating skew */
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GstClockTime base_time;
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GstClockTime base_rtptime;
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guint32 clock_rate;
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GstClockTime base_extrtp;
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GstClockTime prev_out_time;
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guint64 ext_rtptime;
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guint64 last_rtptime;
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gint64 window[RTP_JITTER_BUFFER_MAX_WINDOW];
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guint window_pos;
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guint window_size;
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gboolean window_filling;
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gint64 window_min;
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gint64 skew;
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gint64 prev_send_diff;
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};
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struct _RTPJitterBufferClass {
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GObjectClass parent_class;
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};
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GType rtp_jitter_buffer_get_type (void);
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/* managing lifetime */
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RTPJitterBuffer* rtp_jitter_buffer_new (void);
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RTPJitterBufferMode rtp_jitter_buffer_get_mode (RTPJitterBuffer *jbuf);
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void rtp_jitter_buffer_set_mode (RTPJitterBuffer *jbuf, RTPJitterBufferMode mode);
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GstClockTime rtp_jitter_buffer_get_delay (RTPJitterBuffer *jbuf);
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void rtp_jitter_buffer_set_delay (RTPJitterBuffer *jbuf, GstClockTime delay);
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void rtp_jitter_buffer_reset_skew (RTPJitterBuffer *jbuf);
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gboolean rtp_jitter_buffer_insert (RTPJitterBuffer *jbuf, GstBuffer *buf,
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GstClockTime time,
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guint32 clock_rate,
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gboolean *tail, gint *percent);
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GstBuffer * rtp_jitter_buffer_peek (RTPJitterBuffer *jbuf);
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GstBuffer * rtp_jitter_buffer_pop (RTPJitterBuffer *jbuf, gint *percent);
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void rtp_jitter_buffer_flush (RTPJitterBuffer *jbuf);
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gboolean rtp_jitter_buffer_is_buffering (RTPJitterBuffer * jbuf);
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void rtp_jitter_buffer_set_buffering (RTPJitterBuffer * jbuf, gboolean buffering);
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gint rtp_jitter_buffer_get_percent (RTPJitterBuffer * jbuf);
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guint rtp_jitter_buffer_num_packets (RTPJitterBuffer *jbuf);
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guint32 rtp_jitter_buffer_get_ts_diff (RTPJitterBuffer *jbuf);
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void rtp_jitter_buffer_get_sync (RTPJitterBuffer *jbuf, guint64 *rtptime,
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guint64 *timestamp, guint32 *clock_rate,
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guint64 *last_rtptime);
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#endif /* __RTP_JITTER_BUFFER_H__ */
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