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768 lines
23 KiB
C
768 lines
23 KiB
C
/* GStreamer
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* Copyright (C) <2005,2006,2007> Wim Taymans <wim@fluendo.com>
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* <2007> Peter Kjellerstedt <pkj at axis 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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/*
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* Unless otherwise indicated, Source Code is licensed under MIT license.
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* See further explanation attached in License Statement (distributed in the file
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* LICENSE).
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is furnished to do
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* so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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/**
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* SECTION:gstrtsptransport
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* @title: GstRTSPRange
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* @short_description: dealing with RTSP transports
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*
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* Provides helper functions to deal with RTSP transport strings.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include <stdlib.h>
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#include "gstrtsptransport.h"
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#include "gstrtsp-enumtypes.h"
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#define MAX_MANAGERS 2
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typedef enum
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{
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RTSP_TRANSPORT_DELIVERY = 1 << 0, /* multicast | unicast */
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RTSP_TRANSPORT_DESTINATION = 1 << 1,
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RTSP_TRANSPORT_SOURCE = 1 << 2,
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RTSP_TRANSPORT_INTERLEAVED = 1 << 3,
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RTSP_TRANSPORT_APPEND = 1 << 4,
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RTSP_TRANSPORT_TTL = 1 << 5,
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RTSP_TRANSPORT_LAYERS = 1 << 6,
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RTSP_TRANSPORT_PORT = 1 << 7,
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RTSP_TRANSPORT_CLIENT_PORT = 1 << 8,
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RTSP_TRANSPORT_SERVER_PORT = 1 << 9,
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RTSP_TRANSPORT_SSRC = 1 << 10,
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RTSP_TRANSPORT_MODE = 1 << 11,
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} RTSPTransportParameter;
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typedef struct
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{
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const gchar *name;
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const GstRTSPTransMode mode;
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const GstRTSPProfile profile;
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const GstRTSPLowerTrans ltrans;
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const gchar *media_type;
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const gchar *manager[MAX_MANAGERS];
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} GstRTSPTransMap;
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static const GstRTSPTransMap transports[] = {
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{"rtp", GST_RTSP_TRANS_RTP, GST_RTSP_PROFILE_AVP,
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GST_RTSP_LOWER_TRANS_UDP_MCAST, "application/x-rtp",
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{"rtpbin", "rtpdec"}},
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{"srtp", GST_RTSP_TRANS_RTP, GST_RTSP_PROFILE_SAVP,
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GST_RTSP_LOWER_TRANS_UDP_MCAST, "application/x-srtp",
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{"rtpbin", "rtpdec"}},
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{"rtpf", GST_RTSP_TRANS_RTP, GST_RTSP_PROFILE_AVPF,
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GST_RTSP_LOWER_TRANS_UDP_MCAST, "application/x-rtp",
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{"rtpbin", "rtpdec"}},
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{"srtpf", GST_RTSP_TRANS_RTP, GST_RTSP_PROFILE_SAVPF,
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GST_RTSP_LOWER_TRANS_UDP_MCAST, "application/x-srtp",
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{"rtpbin", "rtpdec"}},
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{"x-real-rdt", GST_RTSP_TRANS_RDT, GST_RTSP_PROFILE_AVP,
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GST_RTSP_LOWER_TRANS_UNKNOWN, "application/x-rdt",
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{"rdtmanager", NULL}},
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{"x-pn-tng", GST_RTSP_TRANS_RDT, GST_RTSP_PROFILE_AVP,
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GST_RTSP_LOWER_TRANS_UNKNOWN, "application/x-rdt",
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{"rdtmanager", NULL}},
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{NULL, GST_RTSP_TRANS_UNKNOWN, GST_RTSP_PROFILE_UNKNOWN,
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GST_RTSP_LOWER_TRANS_UNKNOWN, NULL, {NULL, NULL}}
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};
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typedef struct
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{
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const gchar *name;
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const GstRTSPProfile profile;
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} RTSPProfileMap;
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static const RTSPProfileMap profiles[] = {
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{"avp", GST_RTSP_PROFILE_AVP},
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{"savp", GST_RTSP_PROFILE_SAVP},
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{"avpf", GST_RTSP_PROFILE_AVPF},
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{"savpf", GST_RTSP_PROFILE_SAVPF},
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{NULL, GST_RTSP_PROFILE_UNKNOWN}
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};
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typedef struct
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{
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const gchar *name;
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const GstRTSPLowerTrans ltrans;
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} RTSPLTransMap;
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static const RTSPLTransMap ltrans[] = {
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{"udp", GST_RTSP_LOWER_TRANS_UDP},
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{"mcast", GST_RTSP_LOWER_TRANS_UDP_MCAST},
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{"tcp", GST_RTSP_LOWER_TRANS_TCP},
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{NULL, GST_RTSP_LOWER_TRANS_UNKNOWN}
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};
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#define RTSP_TRANSPORT_PARAMETER_IS_UNIQUE(param) \
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G_STMT_START { \
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if ((transport_params & (param)) != 0) \
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goto invalid_transport; \
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transport_params |= (param); \
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} G_STMT_END
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/**
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* gst_rtsp_transport_new:
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* @transport: location to hold the new #GstRTSPTransport
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*
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* Allocate a new initialized #GstRTSPTransport. Use gst_rtsp_transport_free()
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* after usage.
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*
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* Returns: a #GstRTSPResult.
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*/
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GstRTSPResult
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gst_rtsp_transport_new (GstRTSPTransport ** transport)
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{
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GstRTSPTransport *trans;
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g_return_val_if_fail (transport != NULL, GST_RTSP_EINVAL);
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trans = g_new0 (GstRTSPTransport, 1);
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*transport = trans;
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return gst_rtsp_transport_init (trans);
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}
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/**
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* gst_rtsp_transport_init:
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* @transport: a #GstRTSPTransport
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*
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* Initialize @transport so that it can be used.
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*
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* Returns: #GST_RTSP_OK.
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*/
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GstRTSPResult
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gst_rtsp_transport_init (GstRTSPTransport * transport)
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{
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g_return_val_if_fail (transport != NULL, GST_RTSP_EINVAL);
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g_free (transport->destination);
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g_free (transport->source);
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memset (transport, 0, sizeof (GstRTSPTransport));
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transport->trans = GST_RTSP_TRANS_RTP;
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transport->profile = GST_RTSP_PROFILE_AVP;
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transport->lower_transport = GST_RTSP_LOWER_TRANS_UDP_MCAST;
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transport->mode_play = TRUE;
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transport->mode_record = FALSE;
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transport->interleaved.min = -1;
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transport->interleaved.max = -1;
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transport->port.min = -1;
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transport->port.max = -1;
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transport->client_port.min = -1;
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transport->client_port.max = -1;
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transport->server_port.min = -1;
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transport->server_port.max = -1;
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return GST_RTSP_OK;
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}
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#ifndef GST_REMOVE_DEPRECATED
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/**
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* gst_rtsp_transport_get_mime:
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* @trans: a #GstRTSPTransMode
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* @mime: location to hold the result
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*
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* Get the mime type of the transport mode @trans. This mime type is typically
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* used to generate #GstCaps events.
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*
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* Deprecated: This functions only deals with the GstRTSPTransMode and only
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* returns the mime type for #GST_RTSP_PROFILE_AVP. Use
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* gst_rtsp_transport_get_media_type() instead.
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*
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* Returns: #GST_RTSP_OK.
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*/
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GstRTSPResult
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gst_rtsp_transport_get_mime (GstRTSPTransMode trans, const gchar ** mime)
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{
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gint i;
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g_return_val_if_fail (mime != NULL, GST_RTSP_EINVAL);
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for (i = 0; transports[i].name; i++)
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if (transports[i].mode == trans
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&& transports[i].profile == GST_RTSP_PROFILE_AVP)
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break;
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*mime = transports[i].media_type;
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return GST_RTSP_OK;
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}
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#endif
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/**
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* gst_rtsp_transport_get_media_type:
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* @transport: a #GstRTSPTransport
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* @media_type: (out) (transfer none): media type of @transport
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*
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* Get the media type of @transport. This media type is typically
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* used to generate #GstCaps events.
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*
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* Since: 1.4
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*
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* Returns: #GST_RTSP_OK.
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*/
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GstRTSPResult
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gst_rtsp_transport_get_media_type (GstRTSPTransport * transport,
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const gchar ** media_type)
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{
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gint i;
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g_return_val_if_fail (transport != NULL, GST_RTSP_EINVAL);
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g_return_val_if_fail (media_type != NULL, GST_RTSP_EINVAL);
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for (i = 0; transports[i].name; i++)
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if (transports[i].mode == transport->trans
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&& transports[i].profile == transport->profile)
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break;
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*media_type = transports[i].media_type;
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return GST_RTSP_OK;
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}
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static GstRTSPLowerTrans
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get_default_lower_trans (GstRTSPTransport * transport)
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{
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gint i;
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for (i = 0; transports[i].name; i++)
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if (transports[i].mode == transport->trans
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&& transports[i].profile == transport->profile)
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break;
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return transports[i].ltrans;
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}
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/**
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* gst_rtsp_transport_get_manager:
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* @trans: a #GstRTSPTransMode
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* @manager: (out) (nullable) (transfer none): location to hold the result
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* @option: option index.
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*
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* Get the #GstElement that can handle the buffers transported over @trans.
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*
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* It is possible that there are several managers available, use @option to
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* selected one.
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*
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* @manager will contain an element name or %NULL when no manager is
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* needed/available for @trans.
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*
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* Returns: #GST_RTSP_OK.
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*/
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GstRTSPResult
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gst_rtsp_transport_get_manager (GstRTSPTransMode trans, const gchar ** manager,
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guint option)
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{
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gint i;
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g_return_val_if_fail (manager != NULL, GST_RTSP_EINVAL);
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for (i = 0; transports[i].name; i++)
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if (transports[i].mode == trans)
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break;
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if (option < MAX_MANAGERS)
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*manager = transports[i].manager[option];
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else
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*manager = NULL;
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return GST_RTSP_OK;
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}
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static void
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parse_mode (GstRTSPTransport * transport, const gchar * str)
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{
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transport->mode_play = (strstr (str, "play") != NULL);
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transport->mode_record = (strstr (str, "record") != NULL);
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}
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static gboolean
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check_range (const gchar * str, gchar ** tmp, gint * range)
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{
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glong range_val;
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range_val = strtol (str, tmp, 10);
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if (range_val >= G_MININT && range_val <= G_MAXINT) {
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*range = range_val;
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return TRUE;
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} else {
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return FALSE;
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}
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}
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static gboolean
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parse_range (const gchar * str, GstRTSPRange * range)
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{
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gchar *minus;
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gchar *tmp;
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/* even though strtol() allows white space, plus and minus in front of
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* the number, we do not allow it
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*/
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if (g_ascii_isspace (*str) || *str == '+' || *str == '-')
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goto invalid_range;
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minus = strstr (str, "-");
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if (minus) {
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if (g_ascii_isspace (minus[1]) || minus[1] == '+' || minus[1] == '-')
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goto invalid_range;
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if (!check_range (str, &tmp, &range->min) || str == tmp || tmp != minus)
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goto invalid_range;
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if (!check_range (minus + 1, &tmp, &range->max) || (*tmp && *tmp != ';'))
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goto invalid_range;
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} else {
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if (!check_range (str, &tmp, &range->min) || str == tmp ||
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(*tmp && *tmp != ';'))
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goto invalid_range;
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range->max = -1;
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}
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return TRUE;
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invalid_range:
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{
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range->min = -1;
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range->max = -1;
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return FALSE;
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}
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}
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static gchar *
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range_as_text (const GstRTSPRange * range)
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{
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if (range->min < 0)
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return NULL;
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else if (range->max < 0)
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return g_strdup_printf ("%d", range->min);
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else
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return g_strdup_printf ("%d-%d", range->min, range->max);
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}
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static const gchar *
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rtsp_transport_mode_as_text (const GstRTSPTransport * transport)
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{
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gint i;
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for (i = 0; transports[i].name; i++)
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if (transports[i].mode == transport->trans)
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return transports[i].name;
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return NULL;
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}
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static const gchar *
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rtsp_transport_profile_as_text (const GstRTSPTransport * transport)
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{
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gint i;
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for (i = 0; profiles[i].name; i++)
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if (profiles[i].profile == transport->profile)
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return profiles[i].name;
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return NULL;
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}
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static const gchar *
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rtsp_transport_ltrans_as_text (const GstRTSPTransport * transport)
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{
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gint i;
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/* need to special case GST_RTSP_LOWER_TRANS_UDP_MCAST */
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if (transport->lower_transport == GST_RTSP_LOWER_TRANS_UDP_MCAST)
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return "udp";
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for (i = 0; ltrans[i].name; i++)
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if (ltrans[i].ltrans == transport->lower_transport)
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return ltrans[i].name;
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return NULL;
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}
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#define IS_VALID_PORT_RANGE(range) \
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(range.min >= 0 && range.min < 65536 && range.max < 65536)
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#define IS_VALID_INTERLEAVE_RANGE(range) \
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(range.min >= 0 && range.min < 256 && range.max < 256)
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/**
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* gst_rtsp_transport_parse:
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* @str: a transport string
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* @transport: a #GstRTSPTransport
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*
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* Parse the RTSP transport string @str into @transport.
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*
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* Returns: a #GstRTSPResult.
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*/
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GstRTSPResult
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gst_rtsp_transport_parse (const gchar * str, GstRTSPTransport * transport)
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{
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gchar **split, *down, **transp = NULL;
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guint transport_params = 0;
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gint i, count;
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g_return_val_if_fail (transport != NULL, GST_RTSP_EINVAL);
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g_return_val_if_fail (str != NULL, GST_RTSP_EINVAL);
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gst_rtsp_transport_init (transport);
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/* case insensitive */
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down = g_ascii_strdown (str, -1);
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split = g_strsplit (down, ";", 0);
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g_free (down);
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/* First field contains the transport/profile/lower_transport */
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if (split[0] == NULL)
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goto invalid_transport;
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transp = g_strsplit (split[0], "/", 0);
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if (transp[0] == NULL || transp[1] == NULL)
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goto invalid_transport;
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for (i = 0; transports[i].name; i++)
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if (strcmp (transp[0], transports[i].name) == 0)
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break;
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transport->trans = transports[i].mode;
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if (transport->trans != GST_RTSP_TRANS_RDT) {
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for (i = 0; profiles[i].name; i++)
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if (strcmp (transp[1], profiles[i].name) == 0)
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break;
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transport->profile = profiles[i].profile;
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count = 2;
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} else {
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/* RDT has transport/lower_transport */
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transport->profile = GST_RTSP_PROFILE_AVP;
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count = 1;
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}
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if (transp[count] != NULL) {
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for (i = 0; ltrans[i].name; i++)
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if (strcmp (transp[count], ltrans[i].name) == 0)
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break;
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transport->lower_transport = ltrans[i].ltrans;
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} else {
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/* specifying the lower transport is optional */
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transport->lower_transport = get_default_lower_trans (transport);
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}
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g_strfreev (transp);
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transp = NULL;
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if (transport->trans == GST_RTSP_TRANS_UNKNOWN ||
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transport->profile == GST_RTSP_PROFILE_UNKNOWN ||
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transport->lower_transport == GST_RTSP_LOWER_TRANS_UNKNOWN)
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goto unsupported_transport;
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|
i = 1;
|
|
while (split[i]) {
|
|
if (strcmp (split[i], "multicast") == 0) {
|
|
RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_DELIVERY);
|
|
if (transport->lower_transport == GST_RTSP_LOWER_TRANS_TCP)
|
|
goto invalid_transport;
|
|
transport->lower_transport = GST_RTSP_LOWER_TRANS_UDP_MCAST;
|
|
} else if (strcmp (split[i], "unicast") == 0) {
|
|
RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_DELIVERY);
|
|
if (transport->lower_transport == GST_RTSP_LOWER_TRANS_UDP_MCAST)
|
|
transport->lower_transport = GST_RTSP_LOWER_TRANS_UDP;
|
|
} else if (g_str_has_prefix (split[i], "destination=")) {
|
|
RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_DESTINATION);
|
|
transport->destination = g_strdup (split[i] + 12);
|
|
} else if (g_str_has_prefix (split[i], "source=")) {
|
|
RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_SOURCE);
|
|
transport->source = g_strdup (split[i] + 7);
|
|
} else if (g_str_has_prefix (split[i], "layers=")) {
|
|
RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_LAYERS);
|
|
transport->layers = strtoul (split[i] + 7, NULL, 10);
|
|
} else if (g_str_has_prefix (split[i], "mode=")) {
|
|
RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_MODE);
|
|
parse_mode (transport, split[i] + 5);
|
|
if (!transport->mode_play && !transport->mode_record)
|
|
goto invalid_transport;
|
|
} else if (strcmp (split[i], "append") == 0) {
|
|
RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_APPEND);
|
|
transport->append = TRUE;
|
|
} else if (g_str_has_prefix (split[i], "interleaved=")) {
|
|
RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_INTERLEAVED);
|
|
parse_range (split[i] + 12, &transport->interleaved);
|
|
if (!IS_VALID_INTERLEAVE_RANGE (transport->interleaved))
|
|
goto invalid_transport;
|
|
} else if (g_str_has_prefix (split[i], "ttl=")) {
|
|
RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_TTL);
|
|
transport->ttl = strtoul (split[i] + 4, NULL, 10);
|
|
if (transport->ttl >= 256)
|
|
goto invalid_transport;
|
|
} else if (g_str_has_prefix (split[i], "port=")) {
|
|
RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_PORT);
|
|
if (parse_range (split[i] + 5, &transport->port)) {
|
|
if (!IS_VALID_PORT_RANGE (transport->port))
|
|
goto invalid_transport;
|
|
}
|
|
} else if (g_str_has_prefix (split[i], "client_port=")) {
|
|
RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_CLIENT_PORT);
|
|
if (parse_range (split[i] + 12, &transport->client_port)) {
|
|
if (!IS_VALID_PORT_RANGE (transport->client_port))
|
|
goto invalid_transport;
|
|
}
|
|
} else if (g_str_has_prefix (split[i], "server_port=")) {
|
|
RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_SERVER_PORT);
|
|
if (parse_range (split[i] + 12, &transport->server_port)) {
|
|
if (!IS_VALID_PORT_RANGE (transport->server_port))
|
|
goto invalid_transport;
|
|
}
|
|
} else if (g_str_has_prefix (split[i], "ssrc=")) {
|
|
RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_SSRC);
|
|
transport->ssrc = strtoul (split[i] + 5, NULL, 16);
|
|
} else {
|
|
/* unknown field... */
|
|
if (strlen (split[i]) > 0) {
|
|
g_warning ("unknown transport field \"%s\"", split[i]);
|
|
}
|
|
}
|
|
i++;
|
|
}
|
|
g_strfreev (split);
|
|
|
|
return GST_RTSP_OK;
|
|
|
|
unsupported_transport:
|
|
{
|
|
g_strfreev (split);
|
|
return GST_RTSP_ERROR;
|
|
}
|
|
invalid_transport:
|
|
{
|
|
g_strfreev (transp);
|
|
g_strfreev (split);
|
|
return GST_RTSP_EINVAL;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gst_rtsp_transport_as_text:
|
|
* @transport: a #GstRTSPTransport
|
|
*
|
|
* Convert @transport into a string that can be used to signal the transport in
|
|
* an RTSP SETUP response.
|
|
*
|
|
* Returns: a string describing the RTSP transport or %NULL when the transport
|
|
* is invalid.
|
|
*/
|
|
gchar *
|
|
gst_rtsp_transport_as_text (GstRTSPTransport * transport)
|
|
{
|
|
GPtrArray *strs;
|
|
gchar *res;
|
|
const gchar *tmp;
|
|
|
|
g_return_val_if_fail (transport != NULL, NULL);
|
|
|
|
strs = g_ptr_array_new ();
|
|
|
|
/* add the transport specifier */
|
|
if ((tmp = rtsp_transport_mode_as_text (transport)) == NULL)
|
|
goto invalid_transport;
|
|
g_ptr_array_add (strs, g_ascii_strup (tmp, -1));
|
|
|
|
g_ptr_array_add (strs, g_strdup ("/"));
|
|
|
|
if ((tmp = rtsp_transport_profile_as_text (transport)) == NULL)
|
|
goto invalid_transport;
|
|
g_ptr_array_add (strs, g_ascii_strup (tmp, -1));
|
|
|
|
if (transport->trans != GST_RTSP_TRANS_RTP ||
|
|
(transport->profile != GST_RTSP_PROFILE_AVP &&
|
|
transport->profile != GST_RTSP_PROFILE_SAVP &&
|
|
transport->profile != GST_RTSP_PROFILE_AVPF &&
|
|
transport->profile != GST_RTSP_PROFILE_SAVPF) ||
|
|
transport->lower_transport == GST_RTSP_LOWER_TRANS_TCP) {
|
|
g_ptr_array_add (strs, g_strdup ("/"));
|
|
|
|
if ((tmp = rtsp_transport_ltrans_as_text (transport)) == NULL)
|
|
goto invalid_transport;
|
|
|
|
g_ptr_array_add (strs, g_ascii_strup (tmp, -1));
|
|
}
|
|
|
|
/*
|
|
* the order of the following parameters is the same as the one specified in
|
|
* RFC 2326 to please some weird RTSP clients that require it
|
|
*/
|
|
|
|
/* add the unicast/multicast parameter */
|
|
if (transport->lower_transport == GST_RTSP_LOWER_TRANS_UDP_MCAST)
|
|
g_ptr_array_add (strs, g_strdup (";multicast"));
|
|
else
|
|
g_ptr_array_add (strs, g_strdup (";unicast"));
|
|
|
|
/* add the destination parameter */
|
|
if (transport->destination != NULL) {
|
|
g_ptr_array_add (strs, g_strdup (";destination="));
|
|
g_ptr_array_add (strs, g_strdup (transport->destination));
|
|
}
|
|
|
|
/* add the source parameter */
|
|
if (transport->source != NULL) {
|
|
g_ptr_array_add (strs, g_strdup (";source="));
|
|
g_ptr_array_add (strs, g_strdup (transport->source));
|
|
}
|
|
|
|
/* add the interleaved parameter */
|
|
if (transport->lower_transport == GST_RTSP_LOWER_TRANS_TCP &&
|
|
transport->interleaved.min >= 0) {
|
|
if (transport->interleaved.min < 256 && transport->interleaved.max < 256) {
|
|
g_ptr_array_add (strs, g_strdup (";interleaved="));
|
|
g_ptr_array_add (strs, range_as_text (&transport->interleaved));
|
|
} else
|
|
goto invalid_transport;
|
|
}
|
|
|
|
/* add the append parameter */
|
|
if (transport->mode_record && transport->append)
|
|
g_ptr_array_add (strs, g_strdup (";append"));
|
|
|
|
/* add the ttl parameter */
|
|
if (transport->lower_transport == GST_RTSP_LOWER_TRANS_UDP_MCAST &&
|
|
transport->ttl != 0) {
|
|
if (transport->ttl < 256) {
|
|
g_ptr_array_add (strs, g_strdup (";ttl="));
|
|
g_ptr_array_add (strs, g_strdup_printf ("%u", transport->ttl));
|
|
} else
|
|
goto invalid_transport;
|
|
}
|
|
|
|
/* add the layers parameter */
|
|
if (transport->layers != 0) {
|
|
g_ptr_array_add (strs, g_strdup (";layers="));
|
|
g_ptr_array_add (strs, g_strdup_printf ("%u", transport->layers));
|
|
}
|
|
|
|
/* add the port parameter */
|
|
if (transport->lower_transport != GST_RTSP_LOWER_TRANS_TCP) {
|
|
if (transport->trans == GST_RTSP_TRANS_RTP && transport->port.min >= 0) {
|
|
if (transport->port.min < 65536 && transport->port.max < 65536) {
|
|
g_ptr_array_add (strs, g_strdup (";port="));
|
|
g_ptr_array_add (strs, range_as_text (&transport->port));
|
|
} else
|
|
goto invalid_transport;
|
|
}
|
|
|
|
/* add the client_port parameter */
|
|
if (transport->trans == GST_RTSP_TRANS_RTP
|
|
&& transport->client_port.min >= 0) {
|
|
if (transport->client_port.min < 65536
|
|
&& transport->client_port.max < 65536) {
|
|
g_ptr_array_add (strs, g_strdup (";client_port="));
|
|
g_ptr_array_add (strs, range_as_text (&transport->client_port));
|
|
} else
|
|
goto invalid_transport;
|
|
}
|
|
|
|
/* add the server_port parameter */
|
|
if (transport->trans == GST_RTSP_TRANS_RTP
|
|
&& transport->server_port.min >= 0) {
|
|
if (transport->server_port.min < 65536
|
|
&& transport->server_port.max < 65536) {
|
|
g_ptr_array_add (strs, g_strdup (";server_port="));
|
|
g_ptr_array_add (strs, range_as_text (&transport->server_port));
|
|
} else
|
|
goto invalid_transport;
|
|
}
|
|
}
|
|
|
|
/* add the ssrc parameter */
|
|
if (transport->lower_transport != GST_RTSP_LOWER_TRANS_UDP_MCAST &&
|
|
transport->ssrc != 0) {
|
|
g_ptr_array_add (strs, g_strdup (";ssrc="));
|
|
g_ptr_array_add (strs, g_strdup_printf ("%08X", transport->ssrc));
|
|
}
|
|
|
|
/* add the mode parameter */
|
|
if (transport->mode_play && transport->mode_record)
|
|
g_ptr_array_add (strs, g_strdup (";mode=\"PLAY,RECORD\""));
|
|
else if (transport->mode_record)
|
|
g_ptr_array_add (strs, g_strdup (";mode=\"RECORD\""));
|
|
else if (transport->mode_play)
|
|
g_ptr_array_add (strs, g_strdup (";mode=\"PLAY\""));
|
|
|
|
/* add a terminating NULL */
|
|
g_ptr_array_add (strs, NULL);
|
|
|
|
res = g_strjoinv (NULL, (gchar **) strs->pdata);
|
|
g_strfreev ((gchar **) g_ptr_array_free (strs, FALSE));
|
|
|
|
return res;
|
|
|
|
invalid_transport:
|
|
{
|
|
g_ptr_array_add (strs, NULL);
|
|
g_strfreev ((gchar **) g_ptr_array_free (strs, FALSE));
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gst_rtsp_transport_free:
|
|
* @transport: a #GstRTSPTransport
|
|
*
|
|
* Free the memory used by @transport.
|
|
*
|
|
* Returns: #GST_RTSP_OK.
|
|
*/
|
|
GstRTSPResult
|
|
gst_rtsp_transport_free (GstRTSPTransport * transport)
|
|
{
|
|
g_return_val_if_fail (transport != NULL, GST_RTSP_EINVAL);
|
|
|
|
gst_rtsp_transport_init (transport);
|
|
g_free (transport);
|
|
|
|
return GST_RTSP_OK;
|
|
}
|