mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-25 19:21:06 +00:00
133913a11a
The reason behind this is to minimize the retransmission delay. Previously, when a NACK was received, rtprtxsend would put a retransmission packet in a queue and it would send it from chain(), i.e. only after a new buffer would arrive. This unfortunately was causing big delays, in the order of 60-100 ms, which can be critical for the receiver side. By having a separate GstTask for pushing buffers out of rtxsend, we can push buffers out right after receiving the event, without waiting for chain() to get called.
84 lines
2.6 KiB
C
84 lines
2.6 KiB
C
/* RTP Retransmission sender element for GStreamer
|
|
*
|
|
* gstrtprtxsend.h:
|
|
*
|
|
* Copyright (C) 2013 Collabora Ltd.
|
|
* @author Julien Isorce <julien.isorce@collabora.co.uk>
|
|
*
|
|
* 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 __GST_RTP_RTX_SEND_H__
|
|
#define __GST_RTP_RTX_SEND_H__
|
|
|
|
#include <gst/gst.h>
|
|
#include <gst/rtp/gstrtpbuffer.h>
|
|
#include <gst/base/gstdataqueue.h>
|
|
|
|
G_BEGIN_DECLS
|
|
#define GST_TYPE_RTP_RTX_SEND (gst_rtp_rtx_send_get_type())
|
|
#define GST_RTP_RTX_SEND(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RTP_RTX_SEND, GstRtpRtxSend))
|
|
#define GST_RTP_RTX_SEND_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RTP_RTX_SEND, GstRtpRtxSendClass))
|
|
#define GST_RTP_RTX_SEND_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_RTP_RTX_SEND, GstRtpRtxSendClass))
|
|
#define GST_IS_RTP_RTX_SEND(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RTP_RTX_SEND))
|
|
#define GST_IS_RTP_RTX_SEND_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RTP_RTX_SEND))
|
|
typedef struct _GstRtpRtxSend GstRtpRtxSend;
|
|
typedef struct _GstRtpRtxSendClass GstRtpRtxSendClass;
|
|
|
|
struct _GstRtpRtxSend
|
|
{
|
|
GstElement element;
|
|
|
|
/* pad */
|
|
GstPad *sinkpad;
|
|
GstPad *srcpad;
|
|
|
|
/* rtp packets that will be pushed out */
|
|
GstDataQueue *queue;
|
|
|
|
/* ssrc -> SSRCRtxData */
|
|
GHashTable *ssrc_data;
|
|
/* rtx ssrc -> master ssrc */
|
|
GHashTable *rtx_ssrcs;
|
|
|
|
/* master ssrc -> rtx ssrc (property) */
|
|
GstStructure *external_ssrc_map;
|
|
|
|
/* orig pt (uint) -> rtx pt (uint) */
|
|
GHashTable *rtx_pt_map;
|
|
/* orig pt (string) -> rtx pt (uint) */
|
|
GstStructure *rtx_pt_map_structure;
|
|
|
|
/* buffering control properties */
|
|
guint max_size_time;
|
|
guint max_size_packets;
|
|
|
|
/* statistics */
|
|
guint num_rtx_requests;
|
|
guint num_rtx_packets;
|
|
};
|
|
|
|
struct _GstRtpRtxSendClass
|
|
{
|
|
GstElementClass parent_class;
|
|
};
|
|
|
|
|
|
GType gst_rtp_rtx_send_get_type (void);
|
|
gboolean gst_rtp_rtx_send_plugin_init (GstPlugin * plugin);
|
|
|
|
G_END_DECLS
|
|
#endif /* __GST_RTP_RTX_SEND_H__ */
|