175 lines
8 KiB
C
175 lines
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: SourceInfo.h
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Contains: This object contains an interface for getting at any bit
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of "interesting" information regarding a content source in a
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format - independent manner.
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For instance, the derived object SDPSourceInfo parses an
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SDP file and retrieves all the SourceInfo information from that file.
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*/
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#ifndef __SOURCE_INFO_H__
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#define __SOURCE_INFO_H__
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#include "QTSS.h"
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#include "StrPtrLen.h"
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#include "OSQueue.h"
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#include "OS.h"
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class SourceInfo
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{
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public:
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SourceInfo() : fStreamArray(NULL), fNumStreams(0),
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fOutputArray(NULL), fNumOutputs(0),
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fTimeSet(false),fStartTimeUnixSecs(0),fEndTimeUnixSecs(0),
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fSessionControlType(kRTSPSessionControl) {}
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SourceInfo(const SourceInfo& copy);// Does copy dynamically allocated data
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virtual ~SourceInfo(); // Deletes the dynamically allocated data
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enum
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{
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eDefaultBufferDelay = 3
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};
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// Returns whether this source is reflectable.
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Bool16 IsReflectable();
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// Each source is comprised of a set of streams. Those streams have
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// the following metadata.
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struct StreamInfo
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{
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StreamInfo() : fSrcIPAddr(0), fDestIPAddr(0), fPort(0), fTimeToLive(0), fPayloadType(0), fPayloadName(NULL), fTrackID(0), fBufferDelay((Float32) eDefaultBufferDelay), fIsTCP(false),fSetupToReceive(false), fTimeScale(0){}
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~StreamInfo(); // Deletes the memory allocated for the fPayloadName string
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void Copy(const StreamInfo& copy);// Does copy dynamically allocated data
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UInt32 fSrcIPAddr; // Src IP address of content (this may be 0 if not known for sure)
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UInt32 fDestIPAddr; // Dest IP address of content (destination IP addr for source broadcast!)
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UInt16 fPort; // Dest (RTP) port of source content
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UInt16 fTimeToLive; // Ttl for this stream
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QTSS_RTPPayloadType fPayloadType; // Payload type of this stream
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StrPtrLen fPayloadName; // Payload name of this stream
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UInt32 fTrackID; // ID of this stream
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Float32 fBufferDelay; // buffer delay (default is 3 seconds)
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Bool16 fIsTCP; // Is this a TCP broadcast? If this is the case, the port and ttl are not valid
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Bool16 fSetupToReceive; // If true then a push to the server is setup on this stream.
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UInt32 fTimeScale;
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};
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// Returns the number of StreamInfo objects (number of Streams in this source)
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UInt32 GetNumStreams() { return fNumStreams; }
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StreamInfo* GetStreamInfo(UInt32 inStreamIndex);
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StreamInfo* GetStreamInfoByTrackID(UInt32 inTrackID);
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// If this source is to be Relayed, it may have "Output" information. This
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// tells the reader where to forward the incoming streams onto. There may be
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// 0 -> N OutputInfo objects in this SourceInfo. Each OutputInfo refers to a
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// single, complete copy of ALL the input streams. The fPortArray field
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// contains one RTP port for each incoming stream.
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struct OutputInfo
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{
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OutputInfo() : fDestAddr(0), fLocalAddr(0), fTimeToLive(0), fPortArray(NULL), fNumPorts(0), fBasePort(0), fAlreadySetup(false) {}
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~OutputInfo(); // Deletes the memory allocated for fPortArray
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// Returns true if the two are equal
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Bool16 Equal(const OutputInfo& info);
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void Copy(const OutputInfo& copy);// Does copy dynamically allocated data
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UInt32 fDestAddr; // Destination address to forward the input onto
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UInt32 fLocalAddr; // Address of local interface to send out on (may be 0)
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UInt16 fTimeToLive; // Time to live for resulting output (if multicast)
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UInt16* fPortArray; // 1 destination RTP port for each Stream.
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UInt32 fNumPorts; // Size of the fPortArray (usually equal to fNumStreams)
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UInt16 fBasePort; // The base destination RTP port - for i=1 to fNumStreams fPortArray[i] = fPortArray[i-1] + 2
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Bool16 fAlreadySetup; // A flag used in QTSSReflectorModule.cpp
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};
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// Returns the number of OutputInfo objects.
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UInt32 GetNumOutputs() { return fNumOutputs; }
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UInt32 GetNumNewOutputs(); // Returns # of outputs not already setup
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OutputInfo* GetOutputInfo(UInt32 inOutputIndex);
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// GetLocalSDP. This may or may not be supported by sources. Typically, if
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// the source is reflectable, this must be supported. It returns a newly
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// allocated buffer (that the caller is responsible for) containing an SDP
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// description of the source, stripped of all network info.
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virtual char* GetLocalSDP(UInt32* /*newSDPLen*/) { return NULL; }
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// This is only supported by the RTSPSourceInfo sub class
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virtual Bool16 IsRTSPSourceInfo() { return false; }
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// This is only supported by the RCFSourceInfo sub class and its derived classes
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virtual char* Name() { return NULL; }
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virtual Bool16 Equal(SourceInfo* inInfo);
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// SDP scheduled times supports earliest start and latest end -- doesn't handle repeat times or multiple active times.
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#define kNTP_Offset_From_1970 2208988800LU
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time_t NTPSecs_to_UnixSecs(time_t time) {return (time_t) (time - (UInt32)kNTP_Offset_From_1970);}
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UInt32 UnixSecs_to_NTPSecs(time_t time) {return (UInt32) (time + (UInt32)kNTP_Offset_From_1970);}
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Bool16 SetActiveNTPTimes(UInt32 startNTPTime,UInt32 endNTPTime);
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Bool16 IsValidNTPSecs(UInt32 time) {return time >= (UInt32) kNTP_Offset_From_1970 ? true : false;}
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Bool16 IsPermanentSource() { return ((fStartTimeUnixSecs == 0) && (fEndTimeUnixSecs == 0)) ? true : false; }
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Bool16 IsActiveTime(time_t unixTimeSecs);
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Bool16 IsActiveNow() { return IsActiveTime(OS::UnixTime_Secs()); }
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Bool16 IsRTSPControlled() {return (fSessionControlType == kRTSPSessionControl) ? true : false; }
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Bool16 HasTCPStreams();
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Bool16 HasIncomingBroacast();
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time_t GetStartTimeUnixSecs() {return fStartTimeUnixSecs; }
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time_t GetEndTimeUnixSecs() {return fEndTimeUnixSecs; }
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UInt32 GetDurationSecs();
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enum {kSDPTimeControl, kRTSPSessionControl};
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protected:
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//utility function used by IsReflectable
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Bool16 IsReflectableIPAddr(UInt32 inIPAddr);
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StreamInfo* fStreamArray;
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UInt32 fNumStreams;
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OutputInfo* fOutputArray;
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UInt32 fNumOutputs;
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Bool16 fTimeSet;
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time_t fStartTimeUnixSecs;
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time_t fEndTimeUnixSecs;
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UInt32 fSessionControlType;
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Bool16 fHasValidTime;
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};
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#endif //__SOURCE_INFO_H__
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