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285 lines
8.7 KiB
C++
285 lines
8.7 KiB
C++
/*
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This file is a part of JRTPLIB
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Copyright (c) 1999-2017 Jori Liesenborgs
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Contact: jori.liesenborgs@gmail.com
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This library was developed at the Expertise Centre for Digital Media
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(http://www.edm.uhasselt.be), a research center of the Hasselt University
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(http://www.uhasselt.be). The library is based upon work done for
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my thesis at the School for Knowledge Technology (Belgium/The Netherlands).
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR 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
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THE 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
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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IN THE SOFTWARE.
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*/
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/**
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* \file rtcpsdesinfo.h
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*/
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#ifndef RTCPSDESINFO_H
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#define RTCPSDESINFO_H
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#include "rtpconfig.h"
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#include "rtperrors.h"
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#include "rtpdefines.h"
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#include "rtptypes.h"
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#include <string.h>
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#include <list>
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#include "export.h"
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namespace qrtplib
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{
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/** The class RTCPSDESInfo is a container for RTCP SDES information. */
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class QRTPLIB_API RTCPSDESInfo
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{
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public:
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/** Constructs an instance, optionally installing a memory manager. */
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RTCPSDESInfo()
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{
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}
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virtual ~RTCPSDESInfo()
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{
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Clear();
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}
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/** Clears all SDES information. */
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void Clear();
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/** Sets the SDES CNAME item to \c s with length \c l. */
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int SetCNAME(const uint8_t *s, std::size_t l)
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{
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return SetNonPrivateItem(RTCP_SDES_ID_CNAME - 1, s, l);
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}
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/** Sets the SDES name item to \c s with length \c l. */
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int SetName(const uint8_t *s, std::size_t l)
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{
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return SetNonPrivateItem(RTCP_SDES_ID_NAME - 1, s, l);
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}
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/** Sets the SDES e-mail item to \c s with length \c l. */
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int SetEMail(const uint8_t *s, std::size_t l)
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{
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return SetNonPrivateItem(RTCP_SDES_ID_EMAIL - 1, s, l);
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}
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/** Sets the SDES phone item to \c s with length \c l. */
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int SetPhone(const uint8_t *s, std::size_t l)
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{
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return SetNonPrivateItem(RTCP_SDES_ID_PHONE - 1, s, l);
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}
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/** Sets the SDES location item to \c s with length \c l. */
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int SetLocation(const uint8_t *s, std::size_t l)
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{
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return SetNonPrivateItem(RTCP_SDES_ID_LOCATION - 1, s, l);
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}
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/** Sets the SDES tool item to \c s with length \c l. */
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int SetTool(const uint8_t *s, std::size_t l)
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{
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return SetNonPrivateItem(RTCP_SDES_ID_TOOL - 1, s, l);
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}
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/** Sets the SDES note item to \c s with length \c l. */
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int SetNote(const uint8_t *s, std::size_t l)
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{
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return SetNonPrivateItem(RTCP_SDES_ID_NOTE - 1, s, l);
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}
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#ifdef RTP_SUPPORT_SDESPRIV
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/** Sets the entry for the prefix string specified by \c prefix with length \c prefixlen to contain
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* the value string specified by \c value with length \c valuelen (if the maximum allowed
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* number of prefixes was reached, the error code \c ERR_RTP_SDES_MAXPRIVITEMS is returned.
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*/
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int SetPrivateValue(const uint8_t *prefix, std::size_t prefixlen, const uint8_t *value, std::size_t valuelen);
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/** Deletes the entry for the prefix specified by \c s with length \c len. */
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int DeletePrivatePrefix(const uint8_t *s, std::size_t len);
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#endif // RTP_SUPPORT_SDESPRIV
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/** Returns the SDES CNAME item and stores its length in \c len. */
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uint8_t *GetCNAME(std::size_t *len) const
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{
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return GetNonPrivateItem(RTCP_SDES_ID_CNAME - 1, len);
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}
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/** Returns the SDES name item and stores its length in \c len. */
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uint8_t *GetName(std::size_t *len) const
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{
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return GetNonPrivateItem(RTCP_SDES_ID_NAME - 1, len);
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}
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/** Returns the SDES e-mail item and stores its length in \c len. */
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uint8_t *GetEMail(std::size_t *len) const
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{
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return GetNonPrivateItem(RTCP_SDES_ID_EMAIL - 1, len);
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}
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/** Returns the SDES phone item and stores its length in \c len. */
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uint8_t *GetPhone(std::size_t *len) const
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{
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return GetNonPrivateItem(RTCP_SDES_ID_PHONE - 1, len);
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}
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/** Returns the SDES location item and stores its length in \c len. */
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uint8_t *GetLocation(std::size_t *len) const
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{
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return GetNonPrivateItem(RTCP_SDES_ID_LOCATION - 1, len);
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}
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/** Returns the SDES tool item and stores its length in \c len. */
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uint8_t *GetTool(std::size_t *len) const
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{
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return GetNonPrivateItem(RTCP_SDES_ID_TOOL - 1, len);
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}
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/** Returns the SDES note item and stores its length in \c len. */
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uint8_t *GetNote(std::size_t *len) const
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{
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return GetNonPrivateItem(RTCP_SDES_ID_NOTE - 1, len);
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}
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#ifdef RTP_SUPPORT_SDESPRIV
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/** Starts the iteration over the stored SDES private item prefixes and their associated values. */
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void GotoFirstPrivateValue();
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/** Returns SDES priv item information.
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* If available, returns \c true and stores the next SDES
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* private item prefix in \c prefix and its length in
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* \c prefixlen. The associated value and its length are
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* then stored in \c value and \c valuelen. Otherwise,
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* it returns \c false.
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*/
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bool GetNextPrivateValue(uint8_t **prefix, std::size_t *prefixlen, uint8_t **value, std::size_t *valuelen);
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/** Returns SDES priv item information.
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* Looks for the entry which corresponds to the SDES private
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* item prefix \c prefix with length \c prefixlen. If found,
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* the function returns \c true and stores the associated
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* value and its length in \c value and \c valuelen
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* respectively.
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*/
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bool GetPrivateValue(const uint8_t *prefix, std::size_t prefixlen, uint8_t **value, std::size_t *valuelen) const;
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#endif // RTP_SUPPORT_SDESPRIV
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private:
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int SetNonPrivateItem(int itemno, const uint8_t *s, std::size_t l)
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{
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if (l > RTCP_SDES_MAXITEMLENGTH)
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return ERR_RTP_SDES_LENGTHTOOBIG;
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return nonprivateitems[itemno].SetInfo(s, l);
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}
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uint8_t *GetNonPrivateItem(int itemno, std::size_t *len) const
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{
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return nonprivateitems[itemno].GetInfo(len);
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}
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class SDESItem
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{
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public:
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SDESItem()
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{
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str = 0;
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length = 0;
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}
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~SDESItem()
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{
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if (str)
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delete[] str;
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}
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uint8_t *GetInfo(std::size_t *len) const
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{
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*len = length;
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return str;
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}
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int SetInfo(const uint8_t *s, std::size_t len)
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{
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return SetString(&str, &length, s, len);
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}
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protected:
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int SetString(uint8_t **dest, std::size_t *destlen, const uint8_t *s, std::size_t len)
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{
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if (len <= 0)
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{
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if (*dest)
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delete[] (*dest);
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*dest = 0;
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*destlen = 0;
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}
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else
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{
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len = (len > RTCP_SDES_MAXITEMLENGTH) ? RTCP_SDES_MAXITEMLENGTH : len;
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uint8_t *str2 = new uint8_t[len];
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memcpy(str2, s, len);
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*destlen = len;
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if (*dest)
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delete[] (*dest);
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*dest = str2;
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}
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return 0;
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}
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private:
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uint8_t *str;
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std::size_t length;
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};
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SDESItem nonprivateitems[RTCP_SDES_NUMITEMS_NONPRIVATE];
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#ifdef RTP_SUPPORT_SDESPRIV
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class SDESPrivateItem: public SDESItem
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{
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public:
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SDESPrivateItem()
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{
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prefixlen = 0;
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prefix = 0;
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}
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~SDESPrivateItem()
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{
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if (prefix)
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delete[] prefix;
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}
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uint8_t *GetPrefix(std::size_t *len) const
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{
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*len = prefixlen;
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return prefix;
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}
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int SetPrefix(const uint8_t *s, std::size_t len)
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{
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return SetString(&prefix, &prefixlen, s, len);
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}
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private:
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uint8_t *prefix;
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std::size_t prefixlen;
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};
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std::list<SDESPrivateItem *> privitems;
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std::list<SDESPrivateItem *>::const_iterator curitem;
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#endif // RTP_SUPPORT_SDESPRIV
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};
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} // end namespace
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#endif // RTCPSDESINFO_H
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