vidstats.h

著名的 helix realplayer 基于手机 symbian 系统的 播放器全套源代码

/* ***** BEGIN LICENSE BLOCK ***** 
 * Version: RCSL 1.0/RPSL 1.0 
 *  
 * Portions Copyright (c) 1995-2002 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 
 * Version 1.0 (the "RPSL") available at 
 * http://www.helixcommunity.org/content/rpsl unless you have licensed 
 * the file under the RealNetworks Community Source License Version 1.0 
 * (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.  
 *  
 * 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 __VIDSTATS_H__
#define __VIDSTATS_H__

/****************************************************************************
 *  Includes
 */
#include "hxtypes.h"
#include "hxresult.h"
#include "hxcom.h"
#include "hxcomm.h"
#include "hxbuffer.h"
#include "hxmon.h"
#include "statinfo.h"
#include "rendstats.h"

typedef enum
{
    VS_REND_NAME = 0,
    VS_CODEC_4CC,
    VS_CODEC_NAME,
    VS_CODEC_VERSION,
    VS_CODEC_FRAMERATE,
    VS_CURRENT_FRAMERATE,
    VS_FRAMES_DISPLAYED,
    VS_FRAMES_DROPPED,
    VS_FRAMES_LOST,
    VS_SURESTREAM,
    VS_POSTFILTER,
    VS_CODECS,
    VS_CODECS_FRAMERATES,
    VS_IMAGE_WIDTH,
    VS_IMAGE_HEIGHT,
    VS_NUM_ENTRIES
} VideoStatEntryID;

class CVideoStatistics
{
public:
    /*
     *  Costructor/Destructor
     */
    CVideoStatistics(IUnknown* pContext, ULONG32 ulNumIntervals = 2);
    
    ~CVideoStatistics();
    
    /*
     *  Main Interface
     */
    HX_RESULT DisplayStats(UINT32 ulRegistryID);
    HX_RESULT SyncStats(ULONG32 ulTime);

    void ReportLostFrame(ULONG32 ulCount = 1)  
    { 
	m_Master.m_ulLostFrameCount += ulCount; 
    }
    
    void ReportDroppedFrame(ULONG32 ulCount = 1)  
    { 
	m_Master.m_ulDroppedFrameCount += ulCount;
    }
    
    void ReportBlt(ULONG32 ulTime)  
    { 
	m_Master.m_ulBlitedFrameCount++;
	m_Master.m_ulLastFrameTimeStamp = ulTime;
    }
    
    HX_RESULT ReportStat(VideoStatEntryID eEntryID, const char* pVal)
    {
	return m_pDisplay->UpdateEntry((UINT32) eEntryID, pVal);
    }
    
    HX_RESULT ReportStat(VideoStatEntryID eEntryID, INT32 lVal)
    {
	return m_pDisplay->UpdateEntry((UINT32) eEntryID, lVal);
    }

    ULONG32 GetLastSyncTime(void)
    {
	return m_ulLastSyncTime;
    }

    void ResetSequence(void)
    {
	m_bStatsComputed = FALSE;
	m_ulStartIntervalIndex = 0;
	m_ulEndIntervalIndex = 0;
    }

private:
    class VStatCounters
    {
    public:
	VStatCounters(void)
	: m_ulLostFrameCount(0)
	, m_ulDroppedFrameCount(0)
	, m_ulBlitedFrameCount(0)
	, m_ulLastFrameTimeStamp(0)
	{
	    ;
	}

	~VStatCounters()
	{
	    ;
	}

	ULONG32 m_ulLostFrameCount;
	ULONG32 m_ulDroppedFrameCount;
	ULONG32 m_ulBlitedFrameCount;
	ULONG32 m_ulLastFrameTimeStamp;
    };

    HX_RESULT PrimeEntries(void);

    void ComputeStatistics(void);

    void AdvanceIndex(void)
    {
	m_ulEndIntervalIndex = (m_ulEndIntervalIndex + 1) % m_ulNumIntervalPoints;
	if (m_ulEndIntervalIndex == m_ulStartIntervalIndex)
	{
	    m_ulStartIntervalIndex = (m_ulStartIntervalIndex + 1) % m_ulNumIntervalPoints;
	}
    }

    IHXRegistry* m_pRegistry;
    ULONG32 m_ulRegistryID;
    CRendererStatisticsDisplay* m_pDisplay;

    ULONG32 m_ulNumIntervalPoints;

    ULONG32 m_ulLastSyncTime;
    
    VStatCounters m_Master;

    VStatCounters* m_pPast;
    ULONG32 m_ulStartIntervalIndex;
    ULONG32 m_ulEndIntervalIndex;
    BOOL m_bStatsComputed;

    double m_fPercentFramesDisplayed;	// % of arrived frames displayed
    double m_fFrameRate;		// number of frames per second
};

#endif /* __VIDSTATS_H__ */