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284 lines
9.6 KiB
C
284 lines
9.6 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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __RTP_SOURCE_H__
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#define __RTP_SOURCE_H__
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#include <gst/gst.h>
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#include <gst/rtp/gstrtcpbuffer.h>
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#include <gst/net/gstnetaddressmeta.h>
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#include <gio/gio.h>
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#include "rtpstats.h"
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/* the default number of consecutive RTP packets we need to receive before the
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* source is considered valid */
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#define RTP_NO_PROBATION 0
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#define RTP_DEFAULT_PROBATION 2
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#define RTP_SEQ_MOD (1 << 16)
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typedef struct _RTPSource RTPSource;
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typedef struct _RTPSourceClass RTPSourceClass;
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#define RTP_TYPE_SOURCE (rtp_source_get_type())
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#define RTP_SOURCE(src) (G_TYPE_CHECK_INSTANCE_CAST((src),RTP_TYPE_SOURCE,RTPSource))
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#define RTP_SOURCE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),RTP_TYPE_SOURCE,RTPSourceClass))
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#define RTP_IS_SOURCE(src) (G_TYPE_CHECK_INSTANCE_TYPE((src),RTP_TYPE_SOURCE))
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#define RTP_IS_SOURCE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),RTP_TYPE_SOURCE))
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#define RTP_SOURCE_CAST(src) ((RTPSource *)(src))
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/**
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* RTP_SOURCE_IS_ACTIVE:
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* @src: an #RTPSource
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*
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* Check if @src is active. A source is active when it has been validated
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* and has not yet received a BYE packet.
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*/
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#define RTP_SOURCE_IS_ACTIVE(src) (src->validated && !src->marked_bye)
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/**
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* RTP_SOURCE_IS_SENDER:
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* @src: an #RTPSource
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*
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* Check if @src is a sender.
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*/
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#define RTP_SOURCE_IS_SENDER(src) (src->is_sender)
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/**
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* RTP_SOURCE_IS_MARKED_BYE:
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* @src: an #RTPSource
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*
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* Check if @src is a marked as BYE.
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*/
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#define RTP_SOURCE_IS_MARKED_BYE(src) (src->marked_bye)
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/**
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* RTPSourcePushRTP:
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* @src: an #RTPSource
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* @data: the RTP buffer or buffer list ready for processing
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* @user_data: user data specified when registering
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*
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* This callback will be called when @src has @buffer ready for further
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* processing.
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*
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* Returns: a #GstFlowReturn.
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*/
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typedef GstFlowReturn (*RTPSourcePushRTP) (RTPSource *src, gpointer data,
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gpointer user_data);
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/**
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* RTPSourceClockRate:
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* @src: an #RTPSource
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* @payload: a payload type
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* @user_data: user data specified when registering
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*
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* This callback will be called when @src needs the clock-rate of the
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* @payload.
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*
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* Returns: a clock-rate for @payload.
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*/
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typedef gint (*RTPSourceClockRate) (RTPSource *src, guint8 payload, gpointer user_data);
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/**
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* RTPSourceCallbacks:
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* @push_rtp: a packet becomes available for handling
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* @clock_rate: a clock-rate is requested
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* @get_time: the current clock time is requested
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*
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* Callbacks performed by #RTPSource when actions need to be performed.
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*/
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typedef struct {
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RTPSourcePushRTP push_rtp;
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RTPSourceClockRate clock_rate;
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} RTPSourceCallbacks;
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/**
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* RTPConflictingAddress:
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* @address: #GSocketAddress which conflicted
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* @last_conflict_time: time when the last conflict was seen
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*
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* This structure is used to account for addresses that have conflicted to find
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* loops.
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*/
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typedef struct {
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GSocketAddress *address;
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GstClockTime time;
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} RTPConflictingAddress;
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/**
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* RTPSource:
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*
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* A source in the #RTPSession
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*
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* @conflicting_addresses: GList of conflicting addresses
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*/
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struct _RTPSource {
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GObject object;
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/*< private >*/
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guint32 ssrc;
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guint16 generation;
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guint probation;
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guint curr_probation;
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gboolean validated;
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gboolean internal;
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gboolean is_csrc;
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gboolean is_sender;
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gboolean closing;
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GstStructure *sdes;
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gboolean marked_bye;
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gchar *bye_reason;
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gboolean sent_bye;
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GSocketAddress *rtp_from;
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GSocketAddress *rtcp_from;
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gint payload;
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GstCaps *caps;
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gint clock_rate;
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gint32 seqnum_base;
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GstClockTime bye_time;
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GstClockTime last_activity;
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GstClockTime last_rtp_activity;
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GstClockTime last_rtime;
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GstClockTime last_rtptime;
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/* for bitrate estimation */
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guint64 bitrate;
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GstClockTime prev_rtime;
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guint64 bytes_sent;
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guint64 bytes_received;
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GQueue *packets;
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RTPSourceCallbacks callbacks;
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gpointer user_data;
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RTPSourceStats stats;
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RTPReceiverReport last_rr;
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GList *conflicting_addresses;
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GQueue *retained_feedback;
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gboolean send_pli;
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gboolean send_fir;
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guint8 current_send_fir_seqnum;
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gint last_fir_count;
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gboolean send_nack;
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GArray *nacks;
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};
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struct _RTPSourceClass {
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GObjectClass parent_class;
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};
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GType rtp_source_get_type (void);
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/* managing lifetime of sources */
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RTPSource* rtp_source_new (guint32 ssrc);
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void rtp_source_set_callbacks (RTPSource *src, RTPSourceCallbacks *cb, gpointer data);
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/* properties */
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guint32 rtp_source_get_ssrc (RTPSource *src);
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void rtp_source_set_as_csrc (RTPSource *src);
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gboolean rtp_source_is_as_csrc (RTPSource *src);
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gboolean rtp_source_is_active (RTPSource *src);
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gboolean rtp_source_is_validated (RTPSource *src);
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gboolean rtp_source_is_sender (RTPSource *src);
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void rtp_source_mark_bye (RTPSource *src, const gchar *reason);
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gboolean rtp_source_is_marked_bye (RTPSource *src);
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gchar * rtp_source_get_bye_reason (RTPSource *src);
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void rtp_source_update_caps (RTPSource *src, GstCaps *caps);
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/* SDES info */
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const GstStructure *
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rtp_source_get_sdes_struct (RTPSource * src);
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gboolean rtp_source_set_sdes_struct (RTPSource * src, GstStructure *sdes);
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/* handling network address */
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void rtp_source_set_rtp_from (RTPSource *src, GSocketAddress *address);
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void rtp_source_set_rtcp_from (RTPSource *src, GSocketAddress *address);
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/* handling RTP */
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GstFlowReturn rtp_source_process_rtp (RTPSource *src, RTPPacketInfo *pinfo);
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GstFlowReturn rtp_source_send_rtp (RTPSource *src, RTPPacketInfo *pinfo);
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/* RTCP messages */
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void rtp_source_process_sr (RTPSource *src, GstClockTime time, guint64 ntptime,
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guint32 rtptime, guint32 packet_count, guint32 octet_count);
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void rtp_source_process_rb (RTPSource *src, guint64 ntpnstime, guint8 fractionlost,
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gint32 packetslost, guint32 exthighestseq, guint32 jitter,
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guint32 lsr, guint32 dlsr);
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gboolean rtp_source_get_new_sr (RTPSource *src, guint64 ntpnstime, GstClockTime running_time,
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guint64 *ntptime, guint32 *rtptime, guint32 *packet_count,
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guint32 *octet_count);
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gboolean rtp_source_get_new_rb (RTPSource *src, GstClockTime time, guint8 *fractionlost,
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gint32 *packetslost, guint32 *exthighestseq, guint32 *jitter,
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guint32 *lsr, guint32 *dlsr);
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gboolean rtp_source_get_last_sr (RTPSource *src, GstClockTime *time, guint64 *ntptime,
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guint32 *rtptime, guint32 *packet_count,
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guint32 *octet_count);
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gboolean rtp_source_get_last_rb (RTPSource *src, guint8 *fractionlost, gint32 *packetslost,
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guint32 *exthighestseq, guint32 *jitter,
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guint32 *lsr, guint32 *dlsr, guint32 *round_trip);
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void rtp_source_reset (RTPSource * src);
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gboolean rtp_source_find_conflicting_address (RTPSource * src,
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GSocketAddress *address,
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GstClockTime time);
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void rtp_source_add_conflicting_address (RTPSource * src,
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GSocketAddress *address,
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GstClockTime time);
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void rtp_source_timeout (RTPSource * src,
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GstClockTime current_time,
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GstClockTime collision_timeout,
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GstClockTime feedback_retention_window);
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void rtp_source_retain_rtcp_packet (RTPSource * src,
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GstRTCPPacket *pkt,
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GstClockTime running_time);
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gboolean rtp_source_has_retained (RTPSource * src,
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GCompareFunc func,
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gconstpointer data);
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void rtp_source_register_nack (RTPSource * src,
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guint16 seqnum);
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guint32 * rtp_source_get_nacks (RTPSource * src, guint *n_nacks);
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void rtp_source_clear_nacks (RTPSource * src);
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#endif /* __RTP_SOURCE_H__ */
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