progdown.h
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- /* ***** BEGIN LICENSE BLOCK *****
- * Source last modified: $Id: progdown.h,v 1.1.4.3 2004/07/09 02:04:08 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 PROGDOWN_H
- #define PROGDOWN_H
- // Forward declarations
- typedef _INTERFACE IHXDataFile IHXDataFile;
- typedef _INTERFACE IHXScheduler IHXScheduler;
- typedef _INTERFACE IHXRegistry IHXRegistry;
- class CHXGenericCallback;
- // Defines - these can all be overridden
- // with preferences (see CheckPreferenceValues())
- #define PROGDOWN_STAT_INTERVAL_DEFAULT 1000 // Check filesize at this interval
- #define PROGDOWN_STAT_INTERVAL_INITIAL 8 // Initially start at this interval and backoff (CANNOT BE ZERO)
- #define PROGDOWN_FAIL_INTERVAL_DEFAULT 100 // Retry failed seeks/reads at this interval
- #define PROGDOWN_FINISHED_TIME_DEFAULT 5000 // If filesize unchanged for this duration,
- // then assume the download is finished
- #define PROGDOWN_FORMER_PROG_RETRY_INIT 20 // If we were formerly progressive but not now, retry this many
- // times before failing out
- #define PROGDOWN_NOT_PROG_RETRY_INIT 40 // If we have never been progressive, retry this many
- // times before failing out
- class CProgressiveDownloadMonitorResponse : public IUnknown
- {
- public:
- // IUnknown methods
- STDMETHOD(QueryInterface) (THIS_ REFIID riid, void** ppvObj) PURE;
- STDMETHOD_(ULONG32,AddRef) (THIS) PURE;
- STDMETHOD_(ULONG32,Release) (THIS) PURE;
- // CProgressiveDownloadMonitorResponse methods
- STDMETHOD(ProgressiveCallback) (THIS) PURE;
- };
- class CProgressiveDownloadMonitor : public CHXBaseCountingObject
- {
- public:
- CProgressiveDownloadMonitor();
- virtual ~CProgressiveDownloadMonitor();
- HX_RESULT Init(IUnknown* pContext, IHXDataFile* pFile,
- CProgressiveDownloadMonitorResponse* pResponse);
- HX_RESULT Close();
- BOOL IsProgressive() { return m_bIsProgressive; }
- BOOL HasBeenProgressive() { return m_bHasBeenProgressive; }
- UINT32 GetFormerProgressiveRetryCount() { return m_ulFormerProgRetryCount; }
- void DecrementFormerProgressiveRetryCount() { if (m_ulFormerProgRetryCount) m_ulFormerProgRetryCount--; }
- UINT32 GetNotProgressiveRetryCount() { return m_ulNotProgRetryCount; }
- void DecrementNotProgressiveRetryCount() { if (m_ulNotProgRetryCount) m_ulNotProgRetryCount--; }
- void ResetNotProgressiveRetryCount() { m_ulNotProgRetryCount = m_ulNotProgRetryInit; }
- HX_RESULT ScheduleCallback();
- BOOL IsCallbackPending();
- void CancelCallback();
- HX_RESULT BeginSizeMonitoring();
- void EndSizeMonitoring();
- UINT32 GetFileSizeNow();
- void MonitorFileSize();
- static void StatCallback(void* pArg);
- static void ProgCallback(void* pArg);
- protected:
- IUnknown* m_pContext;
- IHXDataFile* m_pDataFile;
- CProgressiveDownloadMonitorResponse* m_pResponse;
- IHXScheduler* m_pScheduler;
- IHXRegistry* m_pRegistry;
- CHXGenericCallback* m_pStatCallback;
- CHXGenericCallback* m_pProgCallback;
- UINT32 m_ulStatCallbackInterval;
- UINT32 m_ulCurStatInterval;
- UINT32 m_ulProgCallbackInterval;
- UINT32 m_ulFinishedTime;
- UINT32 m_ulLastFileSize;
- UINT32 m_ulTickAtLastFileSize;
- UINT32 m_ulURLRegistryID;
- UINT32 m_ulIsProgRegistryID;
- UINT32 m_ulFormerProgRetryCount;
- UINT32 m_ulFormerProgRetryInit;
- UINT32 m_ulNotProgRetryCount;
- UINT32 m_ulNotProgRetryInit;
- BOOL m_bIsProgressive;
- BOOL m_bMonitorEnabled;
- BOOL m_bHasBeenProgressive;
- void CheckPreferenceValues(REF(BOOL) rbMonitorEnabled,
- REF(UINT32) rulStatCallbackInterval,
- REF(UINT32) rulProgCallbackInterval,
- REF(UINT32) rulFinishedTime,
- REF(UINT32) rulFormerProgRetryCount,
- REF(UINT32) rulNotProgRetryCount);
- HX_RESULT InitRegistryStats();
- void UpdateRegistryStats();
- void ScheduleStatCallback();
- };
- #endif /* #ifndef PROGDOWN_H */