Symbian

开发平台：
C/C++

pxffcmgr.cpp：源码内容
							/* ***** 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 ***** */ 
// include
#include "hxtypes.h"
#include "hxwintyp.h"
#include "hxcom.h"
#include "hxplugn.h"
#include "ihxpckts.h"
// hxcont
#include "hxslist.h"
#include "hxmap.h"
// hxmisc
#include "unkimp.h"
#include "baseobj.h"
// pxcomlib
#include "pxcmpmgr.h"
#include "pxffmcod.h"
#include "pxffcmgr.h"
// hxdebug
#include "hxheap.h"
#ifdef _DEBUG
#undef HX_THIS_FILE		
static char HX_THIS_FILE[] = __FILE__;
#endif
BEGIN_INTERFACE_LIST(PXFileFormatCodecManager)
END_INTERFACE_LIST
PXFileFormatCodecManager::PXFileFormatCodecManager()
{
}
PXFileFormatCodecManager::~PXFileFormatCodecManager()
{
}
BOOL PXFileFormatCodecManager::IsCodecPresent(const char* pszFileMime,
                                              const char* pszFileName,
                                              IHXBuffer* pBuffer)
{
    BOOL bRet = FALSE;
    IHXRealPixFileFormatCodec* pCodec = NULL;
    HX_RESULT                   retVal = GetCodec(pszFileMime, pszFileName,
                                                  pBuffer, pCodec);
    if (SUCCEEDED(retVal))
    {
        bRet = TRUE;
    }
    HX_RELEASE(pCodec);
    return bRet;
}
HX_RESULT PXFileFormatCodecManager::GetCodec(const char*                      pszFileMime,
                                             const char*                      pszFileName,
                                             IHXBuffer*                      pBuffer,
                                             REF(IHXRealPixFileFormatCodec*) rpCodec)
{
    HX_RESULT retVal = HXR_FAIL;
    // Try and get the codec from the file mime type (i.e. - "image/gif")
    if (pszFileMime)
    {
        retVal = GetCodecFromFileMimeType(pszFileMime, rpCodec);
    }
    // Try and get the codec from the file name (i.e. - "foo.gif")
    if (FAILED(retVal) && pszFileName)
    {
        retVal = GetCodecFromFileExtension(pszFileName, rpCodec);
    }
    // Try and get the codec from the actual file content
    if (FAILED(retVal) && pBuffer)
    {
        retVal = GetCodecFromContent(pBuffer, rpCodec);
    }
    return retVal;
}
HX_RESULT PXFileFormatCodecManager::GetID(IUnknown* pComponent, REF(const char*) rpszID)
{
    HX_RESULT retVal = HXR_FAIL;
    if (pComponent)
    {
        IHXRealPixFileFormatCodec* pCodec = NULL;
        retVal = pComponent->QueryInterface(IID_IHXRealPixFileFormatCodec,
                                            (void**) &pCodec);
        if (SUCCEEDED(retVal))
        {
            const char** ppFileExt   = NULL;
            const char** ppFileMime  = NULL;
            UINT32       ulStreamVer = 0;
            UINT32       ulMaxPerImg = 0;
            UINT32       ulMaxPerPck = 0;
            retVal                   = pCodec->GetFileFormatCodecInfo(ppFileExt,
                                                                      ppFileMime,
                                                                      rpszID,
                                                                      ulStreamVer,
                                                                      ulMaxPerImg,
                                                                      ulMaxPerPck);
        }
        HX_RELEASE(pCodec);
    }
    return retVal;
}
HX_RESULT PXFileFormatCodecManager::GetCodecFromFileMimeType(const char*                      pszFileMime,
                                                             REF(IHXRealPixFileFormatCodec*) rpCodec)
{
    BOOL bFound = FALSE;
    if (pszFileMime)
    {
        if (m_pComponentList)
        {
            LISTPOSITION pos = m_pComponentList->GetHeadPosition();
            while (pos)
            {
                IUnknown* pComponent = (IUnknown*) m_pComponentList->GetNext(pos);
                if (pComponent)
                {
                    IHXRealPixFileFormatCodec* pCodec = NULL;
                    pComponent->QueryInterface(IID_IHXRealPixFileFormatCodec,
                                               (void**) &pCodec);
                    if (pCodec)
                    {
                        const char** ppszFileExt   = NULL;
                        const char** ppszFileMime  = NULL;
                        const char*  pszStreamMime = NULL;
                        UINT32       ulStreamVer   = 0;
                        UINT32       ulMaxPerImg   = 0;
                        UINT32       ulMaxPerPckt  = 0;
                        pCodec->GetFileFormatCodecInfo(ppszFileExt, ppszFileMime,
                                                       pszStreamMime, ulStreamVer,
                                                       ulMaxPerImg, ulMaxPerPckt);
                        if (ppszFileMime)
                        {
                            if (IsStringInArray(pszFileMime, ppszFileMime))
                            {
                                HX_RELEASE(rpCodec);
                                rpCodec = pCodec;
                                rpCodec->AddRef();
                                bFound = TRUE;
                            }
                        }
                    }
                    HX_RELEASE(pCodec);
                }
                if (bFound)
                {
                    break;
                }
            }
        }
    }
    
    return (bFound ? HXR_OK : HXR_FAIL);
}
HX_RESULT PXFileFormatCodecManager::GetCodecFromFileExtension(const char*                      pszFileName,
                                                              REF(IHXRealPixFileFormatCodec*) rpCodec)
{
    BOOL bFound = FALSE;
    if (pszFileName)
    {
        // Get the file extension from the file name
        CHXString cExt(pszFileName);
        INT32 lQMark = cExt.Find('?');
        if (lQMark >= 0)
        {
            cExt = cExt.Left(lQMark);
        }
        INT32 lPeriod = cExt.ReverseFind('.');
        if (lPeriod >= 0)
        {
            cExt = cExt.Right(cExt.GetLength() - lPeriod - 1);
            cExt.MakeLower();
        }
        if (cExt.GetLength() > 0)
        {
            if (m_pComponentList)
            {
                LISTPOSITION pos = m_pComponentList->GetHeadPosition();
                while (pos)
                {
                    IUnknown* pComponent = (IUnknown*) m_pComponentList->GetNext(pos);
                    if (pComponent)
                    {
                        IHXRealPixFileFormatCodec* pCodec = NULL;
                        pComponent->QueryInterface(IID_IHXRealPixFileFormatCodec,
                                                   (void**) &pCodec);
                        if (pCodec)
                        {
                            const char** ppszFileExt   = NULL;
                            const char** ppszFileMime  = NULL;
                            const char*  pszStreamMime = NULL;
                            UINT32       ulStreamVer   = 0;
                            UINT32       ulMaxPerImg   = 0;
                            UINT32       ulMaxPerPckt  = 0;
                            pCodec->GetFileFormatCodecInfo(ppszFileExt, ppszFileMime,
                                                           pszStreamMime, ulStreamVer,
                                                           ulMaxPerImg, ulMaxPerPckt);
                            if (ppszFileExt)
                            {
                                if (IsStringInArray((const char*) cExt, ppszFileExt))
                                {
                                    HX_RELEASE(rpCodec);
                                    rpCodec = pCodec;
                                    rpCodec->AddRef();
                                    bFound  = TRUE;
                                }
                            }
                        }
                        HX_RELEASE(pCodec);
                    }
                    if (bFound)
                    {
                        break;
                    }
                }
            }
        }
    }
    
    return (bFound ? HXR_OK : HXR_FAIL);
}
HX_RESULT PXFileFormatCodecManager::GetCodecFromContent(IHXBuffer*                      pBuffer,
                                                        REF(IHXRealPixFileFormatCodec*) rpCodec)
{
    BOOL bFound = FALSE;
    if (pBuffer)
    {
        if (m_pComponentList)
        {
            LISTPOSITION pos = m_pComponentList->GetHeadPosition();
            while (pos)
            {
                IUnknown* pComponent = (IUnknown*) m_pComponentList->GetNext(pos);
                if (pComponent)
                {
                    IHXRealPixFileFormatCodec* pCodec = NULL;
                    pComponent->QueryInterface(IID_IHXRealPixFileFormatCodec,
                                               (void**) &pCodec);
                    if (pCodec)
                    {
                        if (pCodec->ValidInputData(pBuffer))
                        {
                            HX_RELEASE(rpCodec);
                            rpCodec = pCodec;
                            rpCodec->AddRef();
                            bFound  = TRUE;
                        }
                    }
                    HX_RELEASE(pCodec);
                }
                if (bFound)
                {
                    break;
                }
            }
        }
    }
    
    return (bFound ? HXR_OK : HXR_FAIL);
}
BOOL PXFileFormatCodecManager::IsStringInArray(const char*  pszStr,
                                               const char** ppszStrArr)
{
    BOOL bMatch = FALSE;
    if (pszStr && ppszStrArr)
    {
        while (*ppszStrArr)
        {
            if (!strcmp(pszStr, *ppszStrArr))
            {
                bMatch = TRUE;
                break;
            }
            ppszStrArr++;
        }
    }
    return bMatch;
}

						