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We expose a set of new elements: * ULPFEC encoder / decoder * A storage element, which should be placed before jitterbuffers, and is used to store packets in order to attempt reconstruction after the jitterbuffer has sent PacketLost events * RED encoder / decoder (RFC 2198), these are necessary to use FEC in webrtc, as browsers will propose and expect ulpfec packets to be wrapped in red packets With contributions from: Mathieu Duponchelle <mathieu@centricular.com> Sebastian Dröge <sebastian@centricular.com> https://bugzilla.gnome.org/show_bug.cgi?id=792696
69 lines
2.6 KiB
C
69 lines
2.6 KiB
C
/* GStreamer plugin for forward error correction
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* Copyright (C) 2017 Pexip
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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 Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Author: Mikhail Fludkov <misha@pexip.com>
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*/
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#ifndef __RTP_STORAGE_H__
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#define __RTP_STORAGE_H__
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#include <gst/gst.h>
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G_BEGIN_DECLS
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#define RTP_TYPE_STORAGE \
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(rtp_storage_get_type())
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#define RTP_STORAGE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),RTP_TYPE_STORAGE,RtpStorage))
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#define RTP_STORAGE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),RTP_TYPE_STORAGE,RtpStorageClass))
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#define GST_IS_RTP_STORAGE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),RTP_TYPE_STORAGE))
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#define GST_IS_RTP_STORAGE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),RTP_TYPE_RED_DEC))
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typedef struct _RtpStorage RtpStorage;
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typedef struct _RtpStorageClass RtpStorageClass;
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struct _RtpStorageClass {
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GObjectClass parent_class;
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};
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struct _RtpStorage {
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GObject parent;
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GstClockTime size_time;
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GHashTable *streams;
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GMutex streams_lock;
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};
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GstBufferList * rtp_storage_get_packets_for_recovery (RtpStorage * self, gint fec_pt,
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guint32 ssrc, guint16 lost_seq);
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void rtp_storage_put_recovered_packet (RtpStorage * self, GstBuffer * buffer,
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guint8 pt, guint32 ssrc, guint16 seq);
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GstBuffer * rtp_storage_get_redundant_packet (RtpStorage * self, guint32 ssrc,
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guint16 lost_seq);
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gboolean rtp_storage_append_buffer (RtpStorage *self, GstBuffer *buffer);
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void rtp_storage_clear (RtpStorage *self);
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RtpStorage * rtp_storage_new (void);
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void rtp_storage_set_size (RtpStorage *self, GstClockTime size);
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GstClockTime rtp_storage_get_size (RtpStorage *self);
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GType rtp_storage_get_type (void);
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G_END_DECLS
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#endif /* __RTP_STORAGE_H__ */
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