pxpngff.cpp

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: pxpngff.cpp,v 1.3.24.1 2004/07/09 01:52:41 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 ***** */

// include
#include "hxcom.h"
#include "hxtypes.h"
#include "hxwintyp.h"
#include "hxcomm.h"
#include "ihxpckts.h"
#include "hxfiles.h"
#include "hxformt.h"
#include "hxplugn.h"
#include "hxpends.h"
#include "hxasm.h"
#include "hxerror.h"
#include "hxver.h"
#include "hxxres.h"
#include "hxxrsmg.h"
#include "ihxfgbuf.h"

// pncont
#include "chxpckts.h"
#include "hxstring.h"
#include "chxfgbuf.h"

// pnmisc
#include "hxurl.h"
#include "unkimp.h"
#include "baseobj.h"
#include "hxparse.h"
#ifdef _AIX
#include "dllpath.h"
ENABLE_MULTILOAD_DLLACCESS_PATHS(Pxpngff);
#endif

// pxcomlib
#include "gstring.h"
#include "pxcolor.h"
#include "parseurl.h"
#include "pxutil.h"
#include "nestbuff.h"

// libpng
#include "png.h"

// pxpnglib
#include "pxpngdec.h"

// coreres
#include "pixres.h"

// pxpngff
#include "pxpngff.h"
#include "pngfdll.ver"

// pndebug
#include "hxheap.h"
#ifdef _DEBUG
#undef HX_THIS_FILE             
static char HX_THIS_FILE[] = __FILE__;
#endif
#include "errdbg.h"

const char* const  PXPNGFileFormat::m_pszDescription       = "Helix PNG File Format Plugin";
const char* const  PXPNGFileFormat::m_pszCopyright         = HXVER_COPYRIGHT;
const char* const  PXPNGFileFormat::m_pszMoreInfoURL       = HXVER_MOREINFO;
const char* const  PXPNGFileFormat::m_ppszFileMimeTypes[]  = {"image/png", NULL};
const char* const  PXPNGFileFormat::m_ppszFileExtensions[] = {"png", NULL};
const char* const  PXPNGFileFormat::m_ppszFileOpenNames[]  = {"PNG Images (*.png)", NULL};
const char* const  PXPNGFileFormat::m_pszStreamMimeType    = "application/vnd.rn-pngstream";
const UINT32 PXPNGFileFormat::m_ulContentVersion     = HX_ENCODE_PROD_VERSION(0, 0, 0, 0);
const UINT32 PXPNGFileFormat::m_ulStreamVersion      = HX_ENCODE_PROD_VERSION(0, 0, 0, 0);

#ifdef _WINDOWS
extern HINSTANCE g_hInstance;
#endif

PXPNGFileFormat::PXPNGFileFormat()
{
    m_lRefCount = 0;
    Reset();
};

PXPNGFileFormat::~PXPNGFileFormat()
{
    Deallocate();
};

STDMETHODIMP PXPNGFileFormat::QueryInterface(REFIID riid, void** ppvObj)
{
    HX_RESULT retVal = HXR_OK;

    if (IsEqualIID(riid, IID_IUnknown))
    {
        AddRef();
        *ppvObj = (IUnknown*) (IHXPlugin*) this;
    }
    else if (IsEqualIID(riid, IID_IHXPlugin))
    {
        AddRef();
        *ppvObj = (IHXPlugin*) this;
    }
    else if (IsEqualIID(riid, IID_IHXFileFormatObject))
    {
        AddRef();
        *ppvObj = (IHXFileFormatObject*) this;
    }
    else if (IsEqualIID(riid, IID_IHXFileResponse))
    {
        AddRef();
        *ppvObj = (IHXFileResponse*) this;
    }
    else
    {
        *ppvObj = NULL;
        retVal  = HXR_NOINTERFACE;
    }

    return retVal;
}

STDMETHODIMP_(UINT32) PXPNGFileFormat::AddRef()
{
    return InterlockedIncrement(&m_lRefCount);
}

STDMETHODIMP_(UINT32) PXPNGFileFormat::Release()
{
    if (InterlockedDecrement(&m_lRefCount) > 0)
    {
        return m_lRefCount;
    }

    delete this;

    return 0;
}

STDMETHODIMP PXPNGFileFormat::GetPluginInfo(REF(BOOL)        rbLoadMultiple,
                                            REF(const char*) rpszDescription,
                                            REF(const char*) rpszCopyright,
                                            REF(const char*) rpszMoreInfoURL,
                                            REF(UINT32)      rulVersionNumber)
{
    rbLoadMultiple   = TRUE;
    rpszDescription  = m_pszDescription;
    rpszCopyright    = m_pszCopyright;
    rpszMoreInfoURL  = m_pszMoreInfoURL;
    rulVersionNumber = TARVER_ULONG32_VERSION;

    return HXR_OK;
}

STDMETHODIMP PXPNGFileFormat::InitPlugin(IUnknown* pContext)
{
    HX_RESULT retVal = HXR_FAIL;

    if (pContext)
    {
        // Clear out everything
        Deallocate();
        // Save a copy of the calling context
        m_pContext = pContext;
        m_pContext->AddRef();
        // Get an interface to the common class factory
        retVal = m_pContext->QueryInterface(IID_IHXCommonClassFactory,
                                            (void**) &m_pCommonClassFactory);
        if (SUCCEEDED(retVal))
        {
            // Set the state
            m_ulState = kStatePluginInitialized;
        }
    }

    return retVal;
}


STDMETHODIMP PXPNGFileFormat::GetFileFormatInfo(REF(const char**) rppszFileMimeTypes,
                                                REF(const char**) rppszFileExtensions,  
                                                REF(const char**) rppszFileOpenNames)
{
    rppszFileMimeTypes  = (const char **) m_ppszFileMimeTypes;
    rppszFileExtensions = (const char **) m_ppszFileExtensions;
    rppszFileOpenNames  = (const char **) m_ppszFileOpenNames;

    return HXR_OK;
}

STDMETHODIMP PXPNGFileFormat::InitFileFormat(IHXRequest*        pRequest, 
                                             IHXFormatResponse* pFormatResponse,
                                             IHXFileObject*     pFileObject)
{
    HX_RESULT retVal = HXR_FAIL;

    if (pRequest && pFormatResponse && pFileObject)
    {
        if (m_ulState == kStatePluginInitialized)
        {
            // Save members
            HX_RELEASE(m_pRequest);
            m_pRequest = pRequest;
            m_pRequest->AddRef();
            HX_RELEASE(m_pFormatResponse);
            m_pFormatResponse = pFormatResponse;
            m_pFormatResponse->AddRef();
            HX_RELEASE(m_pFileObject);
            m_pFileObject = pFileObject;
            m_pFileObject->AddRef();
            // Get the URL-encoded options
            GetURLOrRequestOptions(pRequest,
                                   m_ulDuration,
                                   m_ulBitrate,
                                   m_pURLStr,
                                   m_bReliable,
                                   m_ulBackgroundColor);
            // Set the state
            m_ulState = kStateFileInitPending;
            // Init the file object
            retVal = m_pFileObject->Init(HX_FILE_READ | HX_FILE_BINARY, this);
        }
    }

    if (FAILED(retVal) && pFormatResponse)
    {
        pFormatResponse->InitDone(HXR_FAIL);
    }

    return retVal;
}

STDMETHODIMP PXPNGFileFormat::GetFileHeader()
{
    HX_RESULT retVal = HXR_OK;

    if (m_ulState == kStateFileFormatInitialized)
    {
        // Get an IHXValues object
        IHXValues* pFileHeader = NULL;
        retVal                  = m_pCommonClassFactory->CreateInstance(CLSID_IHXValues,
                                                                        (void**) &pFileHeader);
        if (SUCCEEDED(retVal))
        {
            // Set the stream count
            pFileHeader->SetPropertyULONG32("StreamCount",    1);
            pFileHeader->SetPropertyULONG32("IsRealDataType", 1);
            // Set the width and height
            pFileHeader->SetPropertyULONG32("Width",  m_ulImageWidth);
            pFileHeader->SetPropertyULONG32("Height", m_ulImageHeight);
            // Set the new state
            m_ulState = kStateFileHeaderSent;
            // Call the response interface
            m_pFormatResponse->FileHeaderReady(HXR_OK, pFileHeader);
        }
        HX_RELEASE(pFileHeader);

        if (FAILED(retVal))
        {
            m_pFormatResponse->FileHeaderReady(retVal, NULL);
        }
    }
    else
    {
        retVal = HXR_UNEXPECTED;
    }

    return retVal;