gst/rtpmanager/rtpsource.h - mtk-gst-plugins-good-debian - Git at Google

 /* 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., 51 Franklin St, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */

 #ifndef __RTP_SOURCE_H__
 #define __RTP_SOURCE_H__

 #include <gst/gst.h>
 #include <gst/rtp/rtp.h>
 #include <gst/net/gstnetaddressmeta.h>
 #include <gio/gio.h>

 #include "rtpstats.h"

 /* the default number of consecutive RTP packets we need to receive before the
  * source is considered valid */
 #define RTP_NO_PROBATION        0
 #define RTP_DEFAULT_PROBATION   2

 #define RTP_SEQ_MOD          (1 << 16)

 typedef struct _RTPSource RTPSource;
 typedef struct _RTPSourceClass RTPSourceClass;

 #define RTP_TYPE_SOURCE             (rtp_source_get_type())
 #define RTP_SOURCE(src)             (G_TYPE_CHECK_INSTANCE_CAST((src),RTP_TYPE_SOURCE,RTPSource))
 #define RTP_SOURCE_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST((klass),RTP_TYPE_SOURCE,RTPSourceClass))
 #define RTP_IS_SOURCE(src)          (G_TYPE_CHECK_INSTANCE_TYPE((src),RTP_TYPE_SOURCE))
 #define RTP_IS_SOURCE_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE((klass),RTP_TYPE_SOURCE))
 #define RTP_SOURCE_CAST(src)        ((RTPSource *)(src))

 /**
  * RTP_SOURCE_IS_ACTIVE:
  * @src: an #RTPSource
  *
  * Check if @src is active. A source is active when it has been validated
  * and has not yet received a BYE packet.
  */
 #define RTP_SOURCE_IS_ACTIVE(src)  (src->validated && !src->marked_bye)

 /**
  * RTP_SOURCE_IS_SENDER:
  * @src: an #RTPSource
  *
  * Check if @src is a sender.
  */
 #define RTP_SOURCE_IS_SENDER(src)  (src->is_sender)
 /**
  * RTP_SOURCE_IS_MARKED_BYE:
  * @src: an #RTPSource
  *
  * Check if @src is a marked as BYE.
  */
 #define RTP_SOURCE_IS_MARKED_BYE(src)  (src->marked_bye)


 /**
  * RTPSourcePushRTP:
  * @src: an #RTPSource
  * @data: the RTP buffer or buffer list ready for processing
  * @user_data: user data specified when registering
  *
  * This callback will be called when @src has @buffer ready for further
  * processing.
  *
  * Returns: a #GstFlowReturn.
  */
 typedef GstFlowReturn (*RTPSourcePushRTP) (RTPSource *src, gpointer data,
 	gpointer user_data);

 /**
  * RTPSourceClockRate:
  * @src: an #RTPSource
  * @payload: a payload type
  * @user_data: user data specified when registering
  *
  * This callback will be called when @src needs the clock-rate of the
  * @payload.
  *
  * Returns: a clock-rate for @payload.
  */
 typedef gint (*RTPSourceClockRate) (RTPSource *src, guint8 payload, gpointer user_data);

 /**
  * RTPSourceCallbacks:
  * @push_rtp: a packet becomes available for handling
  * @clock_rate: a clock-rate is requested
  * @get_time: the current clock time is requested
  *
  * Callbacks performed by #RTPSource when actions need to be performed.
  */
 typedef struct {
   RTPSourcePushRTP     push_rtp;
   RTPSourceClockRate   clock_rate;
 } RTPSourceCallbacks;

 /**
  * RTPConflictingAddress:
  * @address: #GSocketAddress which conflicted
  * @last_conflict_time: time when the last conflict was seen
  *
  * This structure is used to account for addresses that have conflicted to find
  * loops.
  */
 typedef struct {
   GSocketAddress *address;
   GstClockTime time;
 } RTPConflictingAddress;

 /**
  * RTPSource:
  *
  * A source in the #RTPSession
  *
  * @conflicting_addresses: GList of conflicting addresses
  */
 struct _RTPSource {
   GObject       object;

   /*< private >*/
   guint32       ssrc;

   guint16       generation;
   GHashTable    *reported_in_sr_of;     /* set of SSRCs */

   guint         probation;
   guint         curr_probation;
   gboolean      validated;
   gboolean      internal;
   gboolean      is_csrc;
   gboolean      is_sender;
   gboolean      closing;

   GstStructure  *sdes;

   gboolean      marked_bye;
   gchar        *bye_reason;
   gboolean      sent_bye;

   GSocketAddress *rtp_from;
   GSocketAddress *rtcp_from;

   gint          payload;
   GstCaps      *caps;
   gint          clock_rate;
   gint32        seqnum_offset;

   GstClockTime  bye_time;
   GstClockTime  last_activity;
   GstClockTime  last_rtp_activity;

   GstClockTime  last_rtime;
   GstClockTime  last_rtptime;

   /* for bitrate estimation */
   guint64       bitrate;
   GstClockTime  prev_rtime;
   guint64       bytes_sent;
   guint64       bytes_received;

   GQueue       *packets;

   RTPSourceCallbacks callbacks;
   gpointer           user_data;

   RTPSourceStats stats;
   RTPReceiverReport last_rr;

   GList         *conflicting_addresses;

   GQueue        *retained_feedback;

   gboolean     send_pli;
   gboolean     send_fir;
   guint8       current_send_fir_seqnum;
   gint         last_fir_count;

   gboolean     send_nack;
   GArray      *nacks;

 };

 struct _RTPSourceClass {
   GObjectClass   parent_class;
 };

 GType rtp_source_get_type (void);

 /* managing lifetime of sources */
 RTPSource*      rtp_source_new                 (guint32 ssrc);
 void            rtp_source_set_callbacks       (RTPSource *src, RTPSourceCallbacks *cb, gpointer data);

 /* properties */
 guint32         rtp_source_get_ssrc            (RTPSource *src);

 void            rtp_source_set_as_csrc         (RTPSource *src);
 gboolean        rtp_source_is_as_csrc          (RTPSource *src);

 gboolean        rtp_source_is_active           (RTPSource *src);
 gboolean        rtp_source_is_validated        (RTPSource *src);
 gboolean        rtp_source_is_sender           (RTPSource *src);

 void            rtp_source_mark_bye            (RTPSource *src, const gchar *reason);
 gboolean        rtp_source_is_marked_bye       (RTPSource *src);
 gchar *         rtp_source_get_bye_reason      (RTPSource *src);

 void            rtp_source_update_caps         (RTPSource *src, GstCaps *caps);

 /* SDES info */
 const GstStructure *
                 rtp_source_get_sdes_struct     (RTPSource * src);
 gboolean        rtp_source_set_sdes_struct     (RTPSource * src, GstStructure *sdes);

 /* handling network address */
 void            rtp_source_set_rtp_from        (RTPSource *src, GSocketAddress *address);
 void            rtp_source_set_rtcp_from       (RTPSource *src, GSocketAddress *address);

 /* handling RTP */
 GstFlowReturn   rtp_source_process_rtp         (RTPSource *src, RTPPacketInfo *pinfo);

 GstFlowReturn   rtp_source_send_rtp            (RTPSource *src, RTPPacketInfo *pinfo);

 /* RTCP messages */
 void            rtp_source_process_sr          (RTPSource *src, GstClockTime time, guint64 ntptime,
                                                 guint32 rtptime, guint32 packet_count, guint32 octet_count);
 void            rtp_source_process_rb          (RTPSource *src, guint64 ntpnstime, guint8 fractionlost,
                                                 gint32 packetslost, guint32 exthighestseq, guint32 jitter,
                                                 guint32 lsr, guint32 dlsr);

 gboolean        rtp_source_get_new_sr          (RTPSource *src, guint64 ntpnstime, GstClockTime running_time,
                                                 guint64 *ntptime, guint32 *rtptime, guint32 *packet_count,
 						guint32 *octet_count);
 gboolean        rtp_source_get_new_rb          (RTPSource *src, GstClockTime time, guint8 *fractionlost,
                                                 gint32 *packetslost, guint32 *exthighestseq, guint32 *jitter,
                                                 guint32 *lsr, guint32 *dlsr);

 gboolean        rtp_source_get_last_sr         (RTPSource *src, GstClockTime *time, guint64 *ntptime,
                                                 guint32 *rtptime, guint32 *packet_count,
 						guint32 *octet_count);
 gboolean        rtp_source_get_last_rb         (RTPSource *src, guint8 *fractionlost, gint32 *packetslost,
                                                 guint32 *exthighestseq, guint32 *jitter,
                                                 guint32 *lsr, guint32 *dlsr, guint32 *round_trip);

 void            rtp_source_reset               (RTPSource * src);

 gboolean        rtp_source_find_conflicting_address (RTPSource * src,
                                                 GSocketAddress *address,
                                                 GstClockTime time);

 void            rtp_source_add_conflicting_address (RTPSource * src,
                                                 GSocketAddress *address,
                                                 GstClockTime time);

 gboolean        find_conflicting_address       (GList * conflicting_address,
                                                 GSocketAddress * address,
                                                 GstClockTime time);

 GList *         add_conflicting_address        (GList * conflicting_addresses,
                                                 GSocketAddress * address,
                                                 GstClockTime time);
 GList *         timeout_conflicting_addresses  (GList * conflicting_addresses,
                                                 GstClockTime current_time);

 void            rtp_conflicting_address_free   (RTPConflictingAddress * addr);

 void            rtp_source_timeout             (RTPSource * src,
                                                 GstClockTime current_time,
                                                 GstClockTime feedback_retention_window);

 void            rtp_source_retain_rtcp_packet  (RTPSource * src,
                                                 GstRTCPPacket *pkt,
                                                 GstClockTime running_time);
 gboolean        rtp_source_has_retained        (RTPSource * src,
                                                 GCompareFunc func,
                                                 gconstpointer data);

 void            rtp_source_register_nack       (RTPSource * src,
                                                 guint16 seqnum);
 guint32 *       rtp_source_get_nacks           (RTPSource * src, guint *n_nacks);
 void            rtp_source_clear_nacks         (RTPSource * src);

 #endif /* __RTP_SOURCE_H__ */
	/* 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., 51 Franklin St, Fifth Floor,
	* Boston, MA 02110-1301, USA.
	*/

	#ifndef __RTP_SOURCE_H__
	#define __RTP_SOURCE_H__

	#include <gst/gst.h>
	#include <gst/rtp/rtp.h>
	#include <gst/net/gstnetaddressmeta.h>
	#include <gio/gio.h>

	#include "rtpstats.h"

	/* the default number of consecutive RTP packets we need to receive before the
	* source is considered valid */
	#define RTP_NO_PROBATION 0
	#define RTP_DEFAULT_PROBATION 2

	#define RTP_SEQ_MOD (1 << 16)

	typedef struct _RTPSource RTPSource;
	typedef struct _RTPSourceClass RTPSourceClass;

	#define RTP_TYPE_SOURCE (rtp_source_get_type())
	#define RTP_SOURCE(src) (G_TYPE_CHECK_INSTANCE_CAST((src),RTP_TYPE_SOURCE,RTPSource))
	#define RTP_SOURCE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),RTP_TYPE_SOURCE,RTPSourceClass))
	#define RTP_IS_SOURCE(src) (G_TYPE_CHECK_INSTANCE_TYPE((src),RTP_TYPE_SOURCE))
	#define RTP_IS_SOURCE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),RTP_TYPE_SOURCE))
	#define RTP_SOURCE_CAST(src) ((RTPSource *)(src))

	/**
	* RTP_SOURCE_IS_ACTIVE:
	* @src: an #RTPSource
	*
	* Check if @src is active. A source is active when it has been validated
	* and has not yet received a BYE packet.
	*/
	#define RTP_SOURCE_IS_ACTIVE(src) (src->validated && !src->marked_bye)

	/**
	* RTP_SOURCE_IS_SENDER:
	* @src: an #RTPSource
	*
	* Check if @src is a sender.
	*/
	#define RTP_SOURCE_IS_SENDER(src) (src->is_sender)
	/**
	* RTP_SOURCE_IS_MARKED_BYE:
	* @src: an #RTPSource
	*
	* Check if @src is a marked as BYE.
	*/
	#define RTP_SOURCE_IS_MARKED_BYE(src) (src->marked_bye)


	/**
	* RTPSourcePushRTP:
	* @src: an #RTPSource
	* @data: the RTP buffer or buffer list ready for processing
	* @user_data: user data specified when registering
	*
	* This callback will be called when @src has @buffer ready for further
	* processing.
	*
	* Returns: a #GstFlowReturn.
	*/
	typedef GstFlowReturn (RTPSourcePushRTP) (RTPSource src, gpointer data,
	gpointer user_data);

	/**
	* RTPSourceClockRate:
	* @src: an #RTPSource
	* @payload: a payload type
	* @user_data: user data specified when registering
	*
	* This callback will be called when @src needs the clock-rate of the
	* @payload.
	*
	* Returns: a clock-rate for @payload.
	*/
	typedef gint (RTPSourceClockRate) (RTPSource src, guint8 payload, gpointer user_data);

	/**
	* RTPSourceCallbacks:
	* @push_rtp: a packet becomes available for handling
	* @clock_rate: a clock-rate is requested
	* @get_time: the current clock time is requested
	*
	* Callbacks performed by #RTPSource when actions need to be performed.
	*/
	typedef struct {
	RTPSourcePushRTP push_rtp;
	RTPSourceClockRate clock_rate;
	} RTPSourceCallbacks;

	/**
	* RTPConflictingAddress:
	* @address: #GSocketAddress which conflicted
	* @last_conflict_time: time when the last conflict was seen
	*
	* This structure is used to account for addresses that have conflicted to find
	* loops.
	*/
	typedef struct {
	GSocketAddress *address;
	GstClockTime time;
	} RTPConflictingAddress;

	/**
	* RTPSource:
	*
	* A source in the #RTPSession
	*
	* @conflicting_addresses: GList of conflicting addresses
	*/
	struct _RTPSource {
	GObject object;

	/< private >/
	guint32 ssrc;

	guint16 generation;
	GHashTable reported_in_sr_of; / set of SSRCs */

	guint probation;
	guint curr_probation;
	gboolean validated;
	gboolean internal;
	gboolean is_csrc;
	gboolean is_sender;
	gboolean closing;

	GstStructure *sdes;

	gboolean marked_bye;
	gchar *bye_reason;
	gboolean sent_bye;

	GSocketAddress *rtp_from;
	GSocketAddress *rtcp_from;

	gint payload;
	GstCaps *caps;
	gint clock_rate;
	gint32 seqnum_offset;

	GstClockTime bye_time;
	GstClockTime last_activity;
	GstClockTime last_rtp_activity;

	GstClockTime last_rtime;
	GstClockTime last_rtptime;

	/* for bitrate estimation */
	guint64 bitrate;
	GstClockTime prev_rtime;
	guint64 bytes_sent;
	guint64 bytes_received;

	GQueue *packets;

	RTPSourceCallbacks callbacks;
	gpointer user_data;

	RTPSourceStats stats;
	RTPReceiverReport last_rr;

	GList *conflicting_addresses;

	GQueue *retained_feedback;

	gboolean send_pli;
	gboolean send_fir;
	guint8 current_send_fir_seqnum;
	gint last_fir_count;

	gboolean send_nack;
	GArray *nacks;

	};

	struct _RTPSourceClass {
	GObjectClass parent_class;
	};

	GType rtp_source_get_type (void);

	/* managing lifetime of sources */
	RTPSource* rtp_source_new (guint32 ssrc);
	void rtp_source_set_callbacks (RTPSource src, RTPSourceCallbacks cb, gpointer data);

	/* properties */
	guint32 rtp_source_get_ssrc (RTPSource *src);

	void rtp_source_set_as_csrc (RTPSource *src);
	gboolean rtp_source_is_as_csrc (RTPSource *src);

	gboolean rtp_source_is_active (RTPSource *src);
	gboolean rtp_source_is_validated (RTPSource *src);
	gboolean rtp_source_is_sender (RTPSource *src);

	void rtp_source_mark_bye (RTPSource src, const gchar reason);
	gboolean rtp_source_is_marked_bye (RTPSource *src);
	gchar * rtp_source_get_bye_reason (RTPSource *src);

	void rtp_source_update_caps (RTPSource src, GstCaps caps);

	/* SDES info */
	const GstStructure *
	rtp_source_get_sdes_struct (RTPSource * src);
	gboolean rtp_source_set_sdes_struct (RTPSource * src, GstStructure *sdes);

	/* handling network address */
	void rtp_source_set_rtp_from (RTPSource src, GSocketAddress address);
	void rtp_source_set_rtcp_from (RTPSource src, GSocketAddress address);

	/* handling RTP */
	GstFlowReturn rtp_source_process_rtp (RTPSource src, RTPPacketInfo pinfo);

	GstFlowReturn rtp_source_send_rtp (RTPSource src, RTPPacketInfo pinfo);

	/* RTCP messages */
	void rtp_source_process_sr (RTPSource *src, GstClockTime time, guint64 ntptime,
	guint32 rtptime, guint32 packet_count, guint32 octet_count);
	void rtp_source_process_rb (RTPSource *src, guint64 ntpnstime, guint8 fractionlost,
	gint32 packetslost, guint32 exthighestseq, guint32 jitter,
	guint32 lsr, guint32 dlsr);

	gboolean rtp_source_get_new_sr (RTPSource *src, guint64 ntpnstime, GstClockTime running_time,
	guint64 ntptime, guint32 rtptime, guint32 *packet_count,
	guint32 *octet_count);
	gboolean rtp_source_get_new_rb (RTPSource src, GstClockTime time, guint8 fractionlost,
	gint32 packetslost, guint32 exthighestseq, guint32 *jitter,
	guint32 lsr, guint32 dlsr);

	gboolean rtp_source_get_last_sr (RTPSource src, GstClockTime time, guint64 *ntptime,
	guint32 rtptime, guint32 packet_count,
	guint32 *octet_count);
	gboolean rtp_source_get_last_rb (RTPSource src, guint8 fractionlost, gint32 *packetslost,
	guint32 exthighestseq, guint32 jitter,
	guint32 lsr, guint32 dlsr, guint32 *round_trip);

	void rtp_source_reset (RTPSource * src);

	gboolean rtp_source_find_conflicting_address (RTPSource * src,
	GSocketAddress *address,
	GstClockTime time);

	void rtp_source_add_conflicting_address (RTPSource * src,
	GSocketAddress *address,
	GstClockTime time);

	gboolean find_conflicting_address (GList * conflicting_address,
	GSocketAddress * address,
	GstClockTime time);

	GList * add_conflicting_address (GList * conflicting_addresses,
	GSocketAddress * address,
	GstClockTime time);
	GList * timeout_conflicting_addresses (GList * conflicting_addresses,
	GstClockTime current_time);

	void rtp_conflicting_address_free (RTPConflictingAddress * addr);

	void rtp_source_timeout (RTPSource * src,
	GstClockTime current_time,
	GstClockTime feedback_retention_window);

	void rtp_source_retain_rtcp_packet (RTPSource * src,
	GstRTCPPacket *pkt,
	GstClockTime running_time);
	gboolean rtp_source_has_retained (RTPSource * src,
	GCompareFunc func,
	gconstpointer data);

	void rtp_source_register_nack (RTPSource * src,
	guint16 seqnum);
	guint32 * rtp_source_get_nacks (RTPSource * src, guint *n_nacks);
	void rtp_source_clear_nacks (RTPSource * src);

	#endif /* __RTP_SOURCE_H__ */