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118 lines
3.9 KiB
C
118 lines
3.9 KiB
C
/* GStreamer
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* Copyright (C) <2005> Philippe Khalaf <burger@speedy.org>
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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 __GST_BASE_RTP_DEPAYLOAD_H__
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#define __GST_BASE_RTP_DEPAYLOAD_H__
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#include <gst/gst.h>
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#include <gst/rtp/gstrtpbuffer.h>
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G_BEGIN_DECLS
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/* #define's don't like whitespacey bits */
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#define GST_TYPE_BASE_RTP_DEPAYLOAD (gst_base_rtp_depayload_get_type())
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#define GST_BASE_RTP_DEPAYLOAD(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_BASE_RTP_DEPAYLOAD,GstBaseRTPDepayload))
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#define GST_BASE_RTP_DEPAYLOAD_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_BASE_RTP_DEPAYLOAD,GstBaseRTPDepayload))
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#define GST_BASE_RTP_DEPAYLOAD_GET_CLASS(obj) \
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(G_TYPE_INSTANCE_GET_CLASS ((obj),GST_TYPE_BASE_RTP_DEPAYLOAD,GstBaseRTPDepayloadClass))
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#define GST_IS_BASE_RTP_DEPAYLOAD(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_BASE_RTP_DEPAYLOAD))
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#define GST_IS_BASE_RTP_DEPAYLOAD_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_BASE_RTP_DEPAYLOAD))
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#define GST_BASE_RTP_DEPAYLOAD_SINKPAD(depayload) (GST_BASE_RTP_DEPAYLOAD (depayload)->sinkpad)
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#define GST_BASE_RTP_DEPAYLOAD_SRCPAD(depayload) (GST_BASE_RTP_DEPAYLOAD (depayload)->srcpad)
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/* in milliseconds */
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#define RTP_QUEUE_DELAY 100;
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#define QUEUE_LOCK_INIT(base) (g_static_rec_mutex_init(&base->queuelock))
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#define QUEUE_LOCK_FREE(base) (g_static_rec_mutex_free(&base->queuelock))
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#define QUEUE_LOCK(base) (g_static_rec_mutex_lock(&base->queuelock))
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#define QUEUE_UNLOCK(base) (g_static_rec_mutex_unlock(&base->queuelock))
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typedef struct _GstBaseRTPDepayload GstBaseRTPDepayload;
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typedef struct _GstBaseRTPDepayloadClass GstBaseRTPDepayloadClass;
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struct _GstBaseRTPDepayload
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{
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GstElement parent;
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GstPad *sinkpad, *srcpad;
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/* lock to protect the queue */
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GStaticRecMutex queuelock;
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gboolean thread_running;
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/* the releaser thread */
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GThread *thread;
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/* this attribute must be set by the child */
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guint clock_rate;
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/* this value can be modified by the child if needed */
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guint queue_delay;
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/* we will queue up to RTP_QUEUEDELAY ms of packets,
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* reordering them if necessary
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* dropping any packets that are more than
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* RTP_QUEUEDELAY ms late
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*/
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GQueue *queue;
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GstSegment segment;
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gboolean need_newsegment;
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING];
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};
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struct _GstBaseRTPDepayloadClass
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{
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GstElementClass parent_class;
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/* virtuals */
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gboolean (*set_caps) (GstBaseRTPDepayload *filter, GstCaps *caps);
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/* non-pure function, default implementation in base class
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* this does buffering, reordering and dropping
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*/
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GstFlowReturn (*add_to_queue) (GstBaseRTPDepayload *filter, GstBuffer *in);
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/* pure virtual function, child must use this to process incoming
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* rtp packets
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*/
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GstBuffer * (*process) (GstBaseRTPDepayload *base, GstBuffer *in);
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/* non-pure function used to convert from RTP timestamp to GST timestamp
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* this function is used by the child class before gst_pad_pushing
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*/
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void (*set_gst_timestamp) (GstBaseRTPDepayload *filter, guint32 timestamp, GstBuffer *buf);
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING];
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};
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GType gst_base_rtp_depayload_get_type (void);
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G_END_DECLS
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#endif /* __GST_BASE_RTP_DEPAYLOAD_H__ */
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