tconverter_flp.h
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- /* ***** BEGIN LICENSE BLOCK *****
- * Source last modified: $Id: tconverter_flp.h,v 1.2.36.3 2004/07/09 01:48:06 hubbe Exp $
- *
- * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file,
- * are subject to the current version of the RealNetworks Public
- * Source License (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the current version of the RealNetworks Community
- * Source License (the "RCSL") available at
- * http://www.helixcommunity.org/content/rcsl, in which case the RCSL
- * will apply. You may also obtain the license terms directly from
- * RealNetworks. You may not use this file except in compliance with
- * the RPSL or, if you have a valid RCSL with RealNetworks applicable
- * to this file, the RCSL. Please see the applicable RPSL or RCSL for
- * the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL") in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your version of
- * this file only under the terms of the GPL, and not to allow others
- * to use your version of this file under the terms of either the RPSL
- * or RCSL, indicate your decision by deleting the provisions above
- * and replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient may
- * use your version of this file under the terms of any one of the
- * RPSL, the RCSL or the GPL.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the
- * portions it created.
- *
- * This file, and the files included with this file, is distributed
- * and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY
- * KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS
- * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET
- * ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef _TCONVERTER_FLP_H_
- #define _TCONVERTER_FLP_H_
- /*****************************************************************************
- * Defines
- */
- #define MAX_ULONG32_AS_DOUBLE (4294967295.0)
- #define RANGE_ULONG32_AS_DOUBLE (4294967296.0)
- /*****************************************************************************
- * Includes
- */
- #include "hxtypes.h"
- #include "hxassert.h"
- /*****************************************************************************
- * CHXTimestampConverterFLP
- */
- class CHXTimestampConverterFLP
- {
- public:
- /* will use only one of conversion types */
- enum ConversionType
- {
- FACTORS,
- SAMPLES
- };
- typedef struct
- {
- ULONG32 ulBaseHXA;
- ULONG32 ulBaseRTP;
- } ConversionFactors;
- void ReInit(double fHX2RTPFactor)
- {
- m_ulHXAnchor = 0;
- m_ulRTPAnchor = 0;
- m_ulLastRTPTS = 0;
- m_ulLastHXTS = 0;
- m_llFatRTPTS = 0;
- m_llFatHXTS = 0;
- m_fAnchorDeltaInRTP = 0.0;
- m_fFactor = fHX2RTPFactor;
- m_ulHxaFactor = 0;
- m_ulRtpFactor = 0;
- }
- /*
- * if CvtType == FACTORS, ulVal1 is HXA Factor, ulVal2 is RTP Factor
- * if CvtType == SAMPLES, ulVal1 is Sample Rate
- */
- void ReInit(ConversionType cvtType,
- UINT32 ulVal1,
- UINT32 ulVal2 = 0)
- {
- double fHX2RTPFactor;
- ULONG32 ulHxaFactor;
- ULONG32 ulRtpFactor;
- if (cvtType == FACTORS)
- {
- ulHxaFactor = ulVal1;
- ulRtpFactor = ulVal2;
- }
- else
- {
- ulHxaFactor = 1000; // SamplesPerSecond
- ulRtpFactor = ulVal1; // SamplesPerSecond
- }
- fHX2RTPFactor = ((double) ulRtpFactor) / ((double) ulHxaFactor);
- ReInit(fHX2RTPFactor);
- m_ulHxaFactor = ulHxaFactor;
- m_ulRtpFactor = ulRtpFactor;
- }
- void ReInit(ConversionFactors cvtFactors)
- {
- ReInit(FACTORS, cvtFactors.ulBaseHXA, cvtFactors.ulBaseRTP);
- }
- /* default constructor */
- CHXTimestampConverterFLP()
- : m_fFactor(1.0)
- , m_ulHXAnchor(0)
- , m_ulRTPAnchor(0)
- , m_ulLastRTPTS(0)
- , m_ulLastHXTS(0)
- , m_llFatRTPTS(0)
- , m_llFatHXTS(0)
- , m_fAnchorDeltaInRTP(0.0)
- , m_ulHxaFactor(1)
- , m_ulRtpFactor(1)
- {
- ; // nothing to do
- }
-
- /*
- * if CvtType == FACTORS, ulVal1 is HXA Factor, ulVal2 is RTP Factor
- * if CvtType == SAMPLES, ulVal1 is Sample Rate
- */
- CHXTimestampConverterFLP(ConversionType cvtType,
- UINT32 ulVal1,
- UINT32 ulVal2 = 0)
- {
- ReInit(cvtType, ulVal1, ulVal2);
- }
- CHXTimestampConverterFLP(ConversionFactors convFactors)
- {
- ReInit(FACTORS, convFactors.ulBaseHXA, convFactors.ulBaseRTP);
- }
- CHXTimestampConverterFLP(double fHXA2RTPFactor)
- {
- ReInit(fHXA2RTPFactor);
- }
- /* assignment */
- CHXTimestampConverterFLP& operator=(const CHXTimestampConverterFLP& lhs)
- {
- m_fFactor = lhs.m_fFactor;
- m_ulHXAnchor = lhs.m_ulHXAnchor;
- m_ulRTPAnchor = lhs.m_ulRTPAnchor;
- m_ulLastRTPTS = lhs.m_ulLastRTPTS;
- m_ulLastHXTS = lhs.m_ulLastHXTS;
- m_llFatRTPTS = lhs.m_llFatRTPTS;
- m_llFatHXTS = lhs.m_llFatHXTS;
- m_fAnchorDeltaInRTP = lhs.m_fAnchorDeltaInRTP;
- return *this;
- }
-
- ULONG32 doubleToULONG32(double fVal)
- {
- if (fVal >= 0.0)
- {
- return ((ULONG32) (fVal + 0.5));
- }
- else
- {
- return ((ULONG32) (fVal - 0.5));
- }
- }
- /*
- * conversions
- */
- UINT32 hxa2rtp(UINT32 ulHxaTS)
- {
- ULONG32 ulRTPTS;
- LONG32 lHXDelta = (LONG32) (ulHxaTS - m_ulLastHXTS);
- m_ulLastHXTS = ulHxaTS;
- m_llFatHXTS += lHXDelta;
- ulRTPTS = doubleToULONG32((INT64_TO_DOUBLE(m_llFatHXTS - m_ulHXAnchor)) *
- m_fFactor);
- ulRTPTS += m_ulRTPAnchor;
- return ulRTPTS;
- }
- UINT32 rtp2hxa(UINT32 ulRtpTS)
- {
- ULONG32 ulHXTS;
- LONG32 lRTPDelta = (LONG32) (ulRtpTS - m_ulLastRTPTS);
- m_ulLastRTPTS = ulRtpTS;
- m_llFatRTPTS += lRTPDelta;
- ulHXTS = doubleToULONG32((INT64_TO_DOUBLE(m_llFatRTPTS - m_ulRTPAnchor)) /
- m_fFactor);
- ulHXTS += m_ulHXAnchor;
- return ulHXTS;
- }
- UINT32 hxa2rtp_raw(UINT32 ulHxaTS)
- {
- return ((ULONG32) (ulHxaTS * ((double) m_fFactor)) + 0.5);
- }
- UINT32 rtp2hxa_raw(UINT32 ulRtpTS)
- {
- return ((ULONG32) (ulRtpTS / ((double) m_fFactor)) + 0.5);
- }
-
- /*
- * anchors
- */
- void setHXAnchor(UINT32 ulHXAnchor)
- {
- m_ulHXAnchor = ulHXAnchor;
- m_ulRTPAnchor = doubleToULONG32(((double) m_ulHXAnchor) * m_fFactor +
- m_fAnchorDeltaInRTP);
-
- m_ulLastHXTS = m_ulHXAnchor;
- m_ulLastRTPTS = m_ulRTPAnchor;
- m_llFatHXTS = m_ulLastHXTS;
- m_llFatRTPTS = m_ulLastRTPTS;
- }
- void setRTPAnchor(UINT32 ulRTPAnchor)
- {
- m_ulRTPAnchor = ulRTPAnchor;
- m_ulHXAnchor = doubleToULONG32((((double) m_ulRTPAnchor) + m_fAnchorDeltaInRTP) /
- m_fFactor);
- m_ulLastHXTS = m_ulHXAnchor;
- m_ulLastRTPTS = m_ulRTPAnchor;
- m_llFatHXTS = m_ulLastHXTS;
- m_llFatRTPTS = m_ulLastRTPTS;
- }
- void setAnchor(UINT32 ulHXAnchor, UINT32 ulRTPAnchor)
- {
- m_ulHXAnchor = ulHXAnchor;
- m_ulRTPAnchor = ulRTPAnchor;
- m_ulLastHXTS = m_ulHXAnchor;
- m_ulLastRTPTS = m_ulRTPAnchor;
- m_llFatHXTS = m_ulLastHXTS;
- m_llFatRTPTS = m_ulLastRTPTS;
- m_fAnchorDeltaInRTP = ((double) m_ulRTPAnchor) -
- ((double) m_ulHXAnchor) * m_fFactor;
- }
- ULONG32 GetRTPAnchor(void)
- {
- return m_ulRTPAnchor;
- }
- ULONG32 GetHXAnchor(void)
- {
- return m_ulHXAnchor;
- }
- /*
- * factors
- */
- ConversionFactors GetConversionFactors(void)
- {
- ConversionFactors convFactors = {m_ulHxaFactor, m_ulRtpFactor};
- return convFactors;
- }
- double GetHX2RTPFactor(void)
- {
- return m_fFactor;
- }
- private:
- double m_fFactor;
- ULONG32 m_ulHXAnchor;
- ULONG32 m_ulRTPAnchor;
- double m_fAnchorDeltaInRTP;
- ULONG32 m_ulLastRTPTS;
- ULONG32 m_ulLastHXTS;
- INT64 m_llFatRTPTS;
- INT64 m_llFatHXTS;
- ULONG32 m_ulHxaFactor;
- ULONG32 m_ulRtpFactor;
- };
- #endif /* _TCONVERTER_FLP_H_ */