127 lines
3.8 KiB
C
127 lines
3.8 KiB
C
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/*
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*
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* @APPLE_LICENSE_HEADER_START@
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*
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* Copyright (c) 1999-2008 Apple Inc. All Rights Reserved.
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this
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* file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_LICENSE_HEADER_END@
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*
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*/
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/*
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File: RTCPAPPPacket.h
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Contains: RTCPAPPPacket de-packetizing classes
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*/
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#ifndef _RTCPAPPPACKET_H_
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#define _RTCPAPPPACKET_H_
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#include "RTCPPacket.h"
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#include "StrPtrLen.h"
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#include "ResizeableStringFormatter.h"
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#define APPEND_TO_DUMP_ARRAY(f, v) {if (fDebug && mDumpArray != NULL) { (void)::snprintf(mDumpArray,kmDumpArraySize, f, v); fDumpReport.Put(mDumpArray); } }
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class RTCPAPPPacket : public RTCPPacket
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{
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public:
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RTCPAPPPacket(Bool16 debug = false);
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virtual ~RTCPAPPPacket() {};
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virtual void Dump();
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virtual Bool16 ParseAPPPacket(UInt8* inPacketBuffer, UInt32 inPacketLength); //default app header check
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virtual Bool16 ParseAPPData(UInt8* inPacketBuffer, UInt32 inPacketLength) { return false; }; //derived class implements
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inline FourCharCode GetAppPacketName(char *outName = NULL, UInt32 len = 0);
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inline UInt32 GetAppPacketSSRC();
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UInt8* fRTCPAPPDataBuffer; //points into RTCPPacket::fReceiverPacketBuffer should be set past the app header
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UInt32 fAPPDataBufferSize;
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enum
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{
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kAppSSRCOffset = 4,
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kAppNameOffset = 8, //byte offset to four char App identifier //All are UInt32
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kRTCPAPPHeaderSizeInBytes = 4, //
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kmDumpArraySize = 1024
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};
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char* mDumpArray;
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StrPtrLenDel mDumpArrayStrDeleter;
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ResizeableStringFormatter fDumpReport;
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Bool16 fDebug;
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private:
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virtual Bool16 ParseAPPPacketHeader(UInt8* inPacketBuffer, UInt32 inPacketLength);
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};
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/**************** RTCPAPPPacket inlines *******************************/
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inline FourCharCode RTCPAPPPacket::GetAppPacketName(char *outName, UInt32 len)
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{
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UInt32 packetName = (UInt32) (*(UInt32*)&(GetPacketBuffer()[kAppNameOffset]) ) ;
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if (outName)
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{ if (len > 4)
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{ *((UInt32*)outName) = packetName;
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outName[4] = 0;
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}
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else if (len > 0)
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outName[0] = 0;
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}
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return ntohl(packetName);
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}
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inline UInt32 RTCPAPPPacket::GetAppPacketSSRC()
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{
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return (UInt32) ntohl(*(UInt32*)&(GetPacketBuffer()[kAppSSRCOffset]) ) ;
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}
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/*
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6.6 APP: Application-defined RTCP packet
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0 1 2 3
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0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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|V=2|P| subtype | PT=APP=204 | length |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| SSRC/CSRC |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| name (ASCII) |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| application-dependent data |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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#endif //_RTCPAPPPACKET_H_
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