/*
* Farstream - Farstream RTP TFRC Support
*
* Copyright 2010 Collabora Ltd.
* @author: Olivier Crete <olivier.crete@collabora.co.uk>
* Copyright 2010 Nokia Corp.
*
* fs-rtp-tfrc.h - Rate control for Farstream RTP sessions
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __FS_RTP_TFRC_H__
#define __FS_RTP_TFRC_H__
#include <gst/gst.h>
#include "tfrc.h"
#include "fs-rtp-session.h"
#include "fs-rtp-keyunit-manager.h"
G_BEGIN_DECLS
/* TYPE MACROS */
#define FS_TYPE_RTP_TFRC \
(fs_rtp_tfrc_get_type ())
#define FS_RTP_TFRC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj), FS_TYPE_RTP_TFRC, FsRtpTfrc))
#define FS_RTP_TFRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass), FS_TYPE_RTP_TFRC, FsRtpTfrcClass))
#define FS_IS_RTP_TFRC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj), FS_TYPE_RTP_TFRC))
#define FS_IS_RTP_TFRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass), FS_TYPE_RTP_TFRC))
#define FS_RTP_TFRC_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS ((obj), FS_TYPE_RTP_TFRC, FsRtpTfrcClass))
#define FS_RTP_TFRC_CAST(obj) ((FsRtpTfrc *) (obj))
typedef struct _FsRtpTfrc FsRtpTfrc;
typedef struct _FsRtpTfrcClass FsRtpTfrcClass;
typedef enum {
EXTENSION_NONE,
EXTENSION_ONE_BYTE,
EXTENSION_TWO_BYTES
} ExtensionType;
struct TrackedSource {
FsRtpTfrc *self;
guint32 ssrc;
GObject *rtpsource;
TfrcSender *sender;
GstClockID sender_id;
TfrcIsDataLimited *idl;
guint64 send_ts_base;
guint64 send_ts_cycles;
guint32 fb_last_ts;
guint64 fb_ts_cycles;
TfrcReceiver *receiver;
GstClockID receiver_id;
guint32 seq_cycles;
guint32 last_seq;
guint64 ts_cycles;
guint32 last_ts;
guint64 last_now;
guint32 last_rtt;
gboolean send_feedback;
guint64 next_feedback_timer;
gboolean got_nohdr_pkt;
};
/**
* FsRtpTfrc:
*
*/
struct _FsRtpTfrc
{
GstObject parent;
GstClock *systemclock;
FsRtpSession *fsrtpsession;
GstBin *parent_bin;
GObject *rtpsession;
GstPad *in_rtp_pad;
GstPad *in_rtcp_pad;
GstPad *out_rtp_pad;
gulong in_rtp_probe_id;
gulong in_rtcp_probe_id;
gulong on_ssrc_validated_id;
gulong on_sending_rtcp_id;
gulong modder_check_probe_id;
GstElement *packet_modder;
GHashTable *tfrc_sources;
struct TrackedSource *initial_src;
struct TrackedSource *last_src;
/* Sender stuff */
gboolean sending;
gint byte_reservoir;
GstClockTime last_sent_ts;
guint send_bitrate;
ExtensionType extension_type;
guint extension_id;
gboolean pts[128];
};
struct _FsRtpTfrcClass
{
GstObjectClass parent_class;
};
GType fs_rtp_tfrc_get_type (void);
FsRtpTfrc *fs_rtp_tfrc_new (FsRtpSession *fsrtpsession);
void fs_rtp_tfrc_destroy (FsRtpTfrc *self);
void fs_rtp_tfrc_filter_codecs (GList **codec_associations,
GList **header_extensions);
void fs_rtp_tfrc_codecs_updated (FsRtpTfrc *self,
GList *codec_associations,
GList *header_extensions);
gboolean fs_rtp_tfrc_is_enabled (FsRtpTfrc *self, guint pt);
G_END_DECLS
#endif /* __FS_RTP_TFRC_H__ */