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dd11e91c3b
SRT provides the original timestamp of a packet (with drift/skew corrected for local clock), which is what should be used for timestamping the outgoing buffers. This ensures that we output the packets with the same timestamp (and by extension rate) as the original feed. Also detect if packets were dropped (by checking the sequence number) and properly set DISCONT flag on the outgoing buffer. Finally answer the latency queries Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1658>
117 lines
4.3 KiB
C
117 lines
4.3 KiB
C
/* GStreamer
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* Copyright (C) 2018, Collabora Ltd.
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* Copyright (C) 2018, SK Telecom, Co., Ltd.
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* Author: Jeongseok Kim <jeongseok.kim@sk.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 __GST_SRT_OBJECT_H__
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#define __GST_SRT_OBJECT_H__
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#include "gstsrt-enums.h"
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#include "gstsrt-enumtypes.h"
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#include <gio/gio.h>
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#include <srt/srt.h>
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G_BEGIN_DECLS
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#define GST_SRT_DEFAULT_URI_SCHEME "srt"
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#define GST_SRT_DEFAULT_PORT 7001
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#define GST_SRT_DEFAULT_HOST "127.0.0.1"
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#define GST_SRT_DEFAULT_LOCALADDRESS "0.0.0.0"
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#define GST_SRT_DEFAULT_URI GST_SRT_DEFAULT_URI_SCHEME"://"GST_SRT_DEFAULT_HOST":"G_STRINGIFY(GST_SRT_DEFAULT_PORT)
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#define GST_SRT_DEFAULT_MODE GST_SRT_CONNECTION_MODE_CALLER
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#define GST_SRT_DEFAULT_PBKEYLEN GST_SRT_KEY_LENGTH_0
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#define GST_SRT_DEFAULT_POLL_TIMEOUT -1
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#define GST_SRT_DEFAULT_LATENCY 125
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#define GST_SRT_DEFAULT_MSG_SIZE 1316
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#define GST_SRT_DEFAULT_WAIT_FOR_CONNECTION (TRUE)
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typedef struct _GstSRTObject GstSRTObject;
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struct _GstSRTObject
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{
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GstElement *element;
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GstUri *uri;
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GstStructure *parameters;
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gboolean opened;
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SRTSOCKET sock;
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gint poll_id;
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gboolean sent_headers;
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GTask *listener_task;
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SRTSOCKET listener_sock;
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gint listener_poll_id;
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GThread *thread;
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/* Protects the list of callers */
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GMutex sock_lock;
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GCond sock_cond;
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GList *callers;
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gboolean wait_for_connection;
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guint64 previous_bytes;
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};
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GstSRTObject *gst_srt_object_new (GstElement *element);
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void gst_srt_object_destroy (GstSRTObject *srtobject);
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gboolean gst_srt_object_open (GstSRTObject *srtobject,
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GCancellable *cancellable,
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GError **error);
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void gst_srt_object_close (GstSRTObject *srtobject);
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gboolean gst_srt_object_set_property_helper (GstSRTObject *srtobject,
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guint prop_id, const GValue * value,
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GParamSpec * pspec);
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gboolean gst_srt_object_get_property_helper (GstSRTObject *srtobject,
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guint prop_id, GValue * value,
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GParamSpec * pspec);
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void gst_srt_object_install_properties_helper (GObjectClass *gobject_class);
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gboolean gst_srt_object_set_uri (GstSRTObject * srtobject, const gchar *uri, GError ** err);
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gssize gst_srt_object_read (GstSRTObject * srtobject,
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guint8 *data, gsize size,
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GCancellable *cancellable,
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GError **err,
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SRT_MSGCTRL *mctrl);
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gssize gst_srt_object_write (GstSRTObject * srtobject,
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GstBufferList * headers,
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const GstMapInfo * mapinfo,
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GCancellable *cancellable,
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GError **err);
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void gst_srt_object_wakeup (GstSRTObject * srtobject,
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GCancellable *cancellable);
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GstStructure *gst_srt_object_get_stats (GstSRTObject * srtobject);
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G_END_DECLS
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#endif // __GST_SRT_OBJECT_H__
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