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gstreamer/gst/rtsp/gstrtspsrc.h
Mark Nauwelaerts 2738917852 rtspsrc: improve recovery from failed seek 
In case server-side fails to perform seek, i.e. PLAY at non-zero requested
position, recovery so far would arrange for streaming to continue, albeit
having lost position tracking in the process.  So, query position prior
to seek and use upon failed seek.
2011-03-09 17:18:09 +01:00

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* <2006> Wim Taymans <wim@fluendo.com>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Unless otherwise indicated, Source Code is licensed under MIT license.
* See further explanation attached in License Statement (distributed in the file
* LICENSE).
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __GST_RTSPSRC_H__
#define __GST_RTSPSRC_H__
#include <gst/gst.h>
G_BEGIN_DECLS
#include <gst/rtsp/gstrtspconnection.h>
#include <gst/rtsp/gstrtspmessage.h>
#include <gst/rtsp/gstrtspurl.h>
#include <gst/rtsp/gstrtsprange.h>
#include "gstrtspext.h"
#define GST_TYPE_RTSPSRC \
(gst_rtspsrc_get_type())
#define GST_RTSPSRC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RTSPSRC,GstRTSPSrc))
#define GST_RTSPSRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RTSPSRC,GstRTSPSrcClass))
#define GST_IS_RTSPSRC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RTSPSRC))
#define GST_IS_RTSPSRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RTSPSRC))
#define GST_RTSPSRC_CAST(obj) \
((GstRTSPSrc *)(obj))
typedef struct _GstRTSPSrc GstRTSPSrc;
typedef struct _GstRTSPSrcClass GstRTSPSrcClass;
#define GST_RTSP_STATE_GET_LOCK(rtsp) (GST_RTSPSRC_CAST(rtsp)->state_rec_lock)
#define GST_RTSP_STATE_LOCK(rtsp) (g_static_rec_mutex_lock (GST_RTSP_STATE_GET_LOCK(rtsp)))
#define GST_RTSP_STATE_UNLOCK(rtsp) (g_static_rec_mutex_unlock (GST_RTSP_STATE_GET_LOCK(rtsp)))
#define GST_RTSP_STREAM_GET_LOCK(rtsp) (GST_RTSPSRC_CAST(rtsp)->stream_rec_lock)
#define GST_RTSP_STREAM_LOCK(rtsp) (g_static_rec_mutex_lock (GST_RTSP_STREAM_GET_LOCK(rtsp)))
#define GST_RTSP_STREAM_UNLOCK(rtsp) (g_static_rec_mutex_unlock (GST_RTSP_STREAM_GET_LOCK(rtsp)))
#define GST_RTSP_CONN_GET_LOCK(rtsp) (GST_RTSPSRC_CAST(rtsp)->conn_rec_lock)
#define GST_RTSP_CONN_LOCK(rtsp) (g_static_rec_mutex_lock (GST_RTSP_CONN_GET_LOCK(rtsp)))
#define GST_RTSP_CONN_UNLOCK(rtsp) (g_static_rec_mutex_unlock (GST_RTSP_CONN_GET_LOCK(rtsp)))
typedef struct _GstRTSPConnInfo GstRTSPConnInfo;
struct _GstRTSPConnInfo {
gchar *location;
GstRTSPUrl *url;
gchar *url_str;
GstRTSPConnection *connection;
gboolean connected;
};
typedef struct _GstRTSPStream GstRTSPStream;
struct _GstRTSPStream {
gint id;
GstRTSPSrc *parent; /* parent, no extra ref to parent is taken */
/* pad we expose or NULL when it does not have an actual pad */
GstPad *srcpad;
GstFlowReturn last_ret;
gboolean added;
gboolean disabled;
gboolean eos;
gboolean discont;
/* for interleaved mode */
guint8 channel[2];
GstCaps *caps;
GstPad *channelpad[2];
/* our udp sources */
GstElement *udpsrc[2];
GstPad *blockedpad;
gboolean is_ipv6;
/* our udp sinks back to the server */
GstElement *udpsink[2];
GstPad *rtcppad;
/* fakesrc for sending dummy data */
GstElement *fakesrc;
/* state */
gint pt;
guint port;
gboolean container;
/* original control url */
gchar *control_url;
guint32 ssrc;
guint32 seqbase;
guint64 timebase;
/* per stream connection */
GstRTSPConnInfo conninfo;
/* session */
GObject *session;
/* bandwidth */
guint as_bandwidth;
guint rs_bandwidth;
guint rr_bandwidth;
/* destination */
gchar *destination;
gboolean is_multicast;
guint ttl;
};
/**
* GstRTSPNatMethod:
* @GST_RTSP_NAT_NONE: none
* @GST_RTSP_NAT_DUMMY: send dummy packets
*
* Different methods for trying to traverse firewalls.
*/
typedef enum
{
GST_RTSP_NAT_NONE,
GST_RTSP_NAT_DUMMY
} GstRTSPNatMethod;
struct _GstRTSPSrc {
GstBin parent;
/* task and mutex for interleaved mode */
gboolean interleaved;
GstTask *task;
GStaticRecMutex *stream_rec_lock;
GstSegment segment;
gboolean running;
gboolean need_range;
gboolean skip;
gint free_channel;
GstEvent *close_segment;
GstEvent *start_segment;
GstClockTime base_time;
/* UDP mode loop */
gint loop_cmd;
gboolean ignore_timeout;
/* mutex for protecting state changes */
GStaticRecMutex *state_rec_lock;
/* mutex for protecting the connection */
GStaticRecMutex *conn_rec_lock;
GstSDPMessage *sdp;
gboolean from_sdp;
gint numstreams;
GList *streams;
GstStructure *props;
gboolean need_activate;
/* properties */
GstRTSPLowerTrans protocols;
gboolean debug;
guint retry;
guint64 udp_timeout;
GTimeVal tcp_timeout;
GTimeVal *ptcp_timeout;
guint latency;
guint connection_speed;
GstRTSPNatMethod nat_method;
gboolean do_rtcp;
gchar *proxy_host;
guint proxy_port;
gchar *proxy_user;
gchar *proxy_passwd;
guint rtp_blocksize;
gchar *user_id;
gchar *user_pw;
gint buffer_mode;
GstRTSPRange client_port_range;
gint udp_buffer_size;
/* state */
GstRTSPState state;
gchar *content_base;
GstRTSPLowerTrans cur_protocols;
gboolean tried_url_auth;
gchar *addr;
gboolean need_redirect;
GstRTSPTimeRange *range;
gchar *control;
guint next_port_num;
/* supported methods */
gint methods;
gboolean seekable;
GstClockTime last_pos;
/* session management */
GstElement *manager;
gulong manager_sig_id;
gulong manager_ptmap_id;
GstRTSPConnInfo conninfo;
/* a list of RTSP extensions as GstElement */
GstRTSPExtensionList *extensions;
};
struct _GstRTSPSrcClass {
GstBinClass parent_class;
};
GType gst_rtspsrc_get_type(void);
G_END_DECLS
#endif /* __GST_RTSPSRC_H__ */
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