Darwin-Streaming-Server/APICommonCode/QTSS3GPPModuleUtils.cpp

/*
 *
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 *
 * Copyright (c) 1999-2008 Apple Inc.  All Rights Reserved.
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 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
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 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
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/*
    File:       QTSS3GPPModuleUtils.cpp

    Contains:   Implements utility routines defined in QTSS3GPPModuleUtils.h.
                    
*/

#include "QTSS3GPPModuleUtils.h"
#include "QTSSModuleUtils.h"
#include "QTSS_Private.h"

#include "StrPtrLen.h"
#include "OSArrayObjectDeleter.h"
#include "OSMemory.h"
#include "MyAssert.h"
#include "StringFormatter.h"
#include "ResizeableStringFormatter.h"
#include "StringParser.h"
#include "SafeStdLib.h"


QTSS_TextMessagesObject     QTSS3GPPModuleUtils::sMessages = NULL;
QTSS_ServerObject           QTSS3GPPModuleUtils::sServer = NULL;
QTSS_PrefsObject			QTSS3GPPModuleUtils::sServerPrefs = NULL;
QTSS_StreamRef              QTSS3GPPModuleUtils::sErrorLog = NULL;
StrPtrLen					QTSS3GPPModuleUtils::s3gppBitRateAdaptationSDPStr("a=3GPP-Adaptation-Support:");
const char*                 k3gppRateAdaptationReportFreqPrefName  = "3gpp_protocol_rate_adaptation_report_frequency";

Bool16                      QTSS3GPPModuleUtils::s3gppEnabled = false;
Bool16                      QTSS3GPPModuleUtils::s3gppRateAdaptationEnabled = false;
UInt16                      QTSS3GPPModuleUtils::s3gppRateAdaptationReportFrequency = 1;

void    QTSS3GPPModuleUtils::Initialize(QTSS_Initialize_Params* initParams)
{
	if (NULL == initParams)
		return;
		
    sServer = initParams->inServer;          
	sServerPrefs = initParams->inPrefs;
	sMessages = initParams->inMessages;
    sErrorLog = initParams->inErrorLogStream;  
	
}

void    QTSS3GPPModuleUtils::ValidatePrefs()
{

// min and max values per 3gpp rel-6 A26234  5.3.3.5 
     if (s3gppRateAdaptationReportFrequency < 1 || s3gppRateAdaptationReportFrequency > 9)
        QTSSModuleUtils::LogPrefErrorStr( qtssWarningVerbosity, (char*) k3gppRateAdaptationReportFreqPrefName, "has an invalid value: valid range is [1..9]");
   
    if (s3gppRateAdaptationReportFrequency < 1)
        s3gppRateAdaptationReportFrequency = 1;
    
    if (s3gppRateAdaptationReportFrequency > 9)
        s3gppRateAdaptationReportFrequency = 9;
        
    
} 	



void    QTSS3GPPModuleUtils::ReadPrefs()
{

    const Bool16 kDefaultEnable = true;
    const UInt16 kDefaultReportFreq = 1;
    QTSSModuleUtils::GetAttribute(sServerPrefs,"enable_3gpp_protocol", qtssAttrDataTypeBool16, 
                                               &s3gppEnabled,(void *)&kDefaultEnable, sizeof(s3gppEnabled));
  
    QTSSModuleUtils::GetAttribute(sServerPrefs,"enable_3gpp_protocol_rate_adaptation", qtssAttrDataTypeBool16, 
                                               &s3gppRateAdaptationEnabled,(void *)&kDefaultEnable, sizeof(s3gppRateAdaptationEnabled));
	
    QTSSModuleUtils::GetAttribute(sServerPrefs, (char *) k3gppRateAdaptationReportFreqPrefName, qtssAttrDataTypeUInt16, 
                                               &s3gppRateAdaptationReportFrequency,(void *)&kDefaultReportFreq, sizeof(s3gppRateAdaptationReportFrequency));
	

    QTSS3GPPModuleUtils::ValidatePrefs();
}

SDPContainer* QTSS3GPPModuleUtils::Get3GPPSDPFeatureListCopy(ResizeableStringFormatter &buffer)
{
    SDPContainer* resultList = NEW SDPContainer;
    StrPtrLen theLinePtr;
    
                            
    if (s3gppEnabled)
    {
        if (s3gppRateAdaptationEnabled)
        {
            buffer.Put(s3gppBitRateAdaptationSDPStr);
            buffer.Put((SInt32) s3gppRateAdaptationReportFrequency);
            buffer.PutEOL();
            theLinePtr.Set(buffer.GetBufPtr(),buffer.GetBytesWritten());
			resultList->AddHeaderLine(&theLinePtr);
			buffer.Reset();
       }
        
    }
    
    
    return resultList;
}