pxpngrnd.cpp

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: pxpngrnd.cpp,v 1.4.22.1 2004/07/09 01:52:28 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 "hxtypes.h"
#include "hxwintyp.h"
#include "hxcom.h"
#include "hxcomm.h"
#include "ihxpckts.h"
#include "hxfiles.h"
#include "hxcore.h"
#include "hxrendr.h"
#include "hxhyper.h"
#include "hxplugn.h"
#include "hxwin.h"
#include "hxasm.h"
#include "hxevent.h"
#include "hxvsurf.h"
#include "hxver.h"
#include "hxupgrd.h"
#include "hxengin.h"
#include "hxmon.h"
#include "hxprefs.h"
#include "hxerror.h"

// pncont
#include "hxbuffer.h"
#include "hxstring.h"

// pnmisc
#include "unkimp.h"
#include "baseobj.h"
#include "hxtick.h"

// baserend
#include "baserend.h"
#include "vbasernd.h"

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

// pxcomlib
#include "glist.h"
#include "gstring.h"
#include "pxutil.h"
#include "pxcolor.h"
#include "parseurl.h"
#include "pxrect.h"
#include "pximage.h"
#include "pxtransp.h"

// libpng
#include "png.h"

// pxpnglib
#include "pxpngdec.h"

// pxpngrnd
#include "pngrmlog.h"
#include "pxpngrnd.h"
#include "pngrdll.ver"

#ifdef _AIX
#include "dllpath.h"
ENABLE_MULTILOAD_DLLACCESS_PATHS(Pxpngrnd);
#endif

// Define whether we're row inverted or not
#if defined(_WINDOWS)
#define ROWS_INVERTED TRUE
#else
#define ROWS_INVERTED FALSE
#endif

const char* const PXPNGRenderer::m_pszName        = "PNG";
const char* const PXPNGRenderer::m_pszDescription = "Helix PNG Renderer Plugin";
const char* const PXPNGRenderer::m_ppszMimeType[] = {"application/vnd.rn-pngstream", NULL};

PXPNGRenderer::PXPNGRenderer() : CRNVisualBaseRenderer()
{
    MLOG_LEAK("CON PXPNGRenderer this=0x%08x\n", this);
    m_ulImageWidth              = 0;
    m_ulImageHeight             = 0;
    m_ulNumPackets              = 0;
    m_ulBackgroundColor         = 0x00000000;
    m_pURLStr                   = NULL;
    m_pImage                    = NULL;
    m_pDisplayImage             = NULL;
    m_pDecode                   = NULL;
    m_ulPacketIndex             = 0;
    m_bFirstDraw                = TRUE;
    m_bDecodeFinished           = FALSE;
    m_ulBackgroundOpacity       = 255;
    m_ulMediaOpacity            = 255;
    m_ulMediaChromaKey          = 0;
    m_bMediaChromaKeySpecified  = FALSE;
    m_ulMediaChromaKeyTolerance = 0;
    m_ulMediaChromaKeyOpacity   = 0;
    m_bImageUsesAlphaChannel    = FALSE;
    m_bDisplayUsesAlphaChannel  = FALSE;
};

PXPNGRenderer::~PXPNGRenderer()
{
    MLOG_LEAK("DES PXPNGRenderer this=0x%08x\n", this);
    HX_RELEASE(m_pURLStr);
    HX_RELEASE(m_pImage);
    HX_RELEASE(m_pDisplayImage);
    HX_RELEASE(m_pDecode);
};

STDMETHODIMP PXPNGRenderer::QueryInterface(REFIID riid, void** ppvObj)
{
    return CRNVisualBaseRenderer::QueryInterface(riid, ppvObj);
}

STDMETHODIMP_(UINT32) PXPNGRenderer::AddRef()
{
    return CRNVisualBaseRenderer::AddRef();
}


STDMETHODIMP_(UINT32) PXPNGRenderer::Release()
{
    return CRNVisualBaseRenderer::Release();
}

STDMETHODIMP PXPNGRenderer::OnHeader(IHXValues* pHeader)
{
#ifdef XXXMEH_DEBUG_LOG
    DEBUG_OUTF("c:\\png.log", (s, "OnHeader(0x%08X)\n", this));
#endif
    HX_RESULT retVal = HXR_FAIL;

    if (pHeader)
    {
        // Check presentation stream and content versions
        retVal = CheckStreamVersions(pHeader);
        if (SUCCEEDED(retVal))
        {
            // Get the opaque data from the stream header
            IHXBuffer* pOpaque = NULL;
            retVal              = pHeader->GetPropertyBuffer("OpaqueData", pOpaque);
            if (SUCCEEDED(retVal))
            {
                // Unpack the stream header
                BYTE* pBuf = pOpaque->GetBuffer();
                UnPack32(pBuf, m_ulImageWidth);
                UnPack32(pBuf, m_ulImageHeight);
                UnPack32(pBuf, m_ulNumPackets);
                UnPack32(pBuf, m_ulBackgroundColor);
                UINT16 usURLSize = 0;
                UnPack16(pBuf, usURLSize);
                if (usURLSize)
                {
                    HX_RELEASE(m_pURLStr);
                    retVal = m_pCommonClassFactory->CreateInstance(CLSID_IHXBuffer,
                                                                   (void**) &m_pURLStr);
                    if (SUCCEEDED(retVal))
                    {
                        retVal = m_pURLStr->Set((const BYTE*) pBuf, (UINT32) usURLSize);
                    }
                }
                if (SUCCEEDED(retVal))
                {
                    // Create the raw decoded image
                    HX_RELEASE(m_pImage);
                    retVal = PXImage::CreateObject(&m_pImage);
                    if (SUCCEEDED(retVal))
                    {
                        // AddRef the object
                        m_pImage->AddRef();
                        // Init the image
                        retVal = m_pImage->Create((INT32) m_ulImageWidth,  // width
                                                  (INT32) m_ulImageHeight, // height
                                                  32,                      // bpp
                                                  HX_RGB,                 // color format
                                                  ROWS_INVERTED,           // row inversion
                                                  TRUE);                   // always allocate
                        if (SUCCEEDED(retVal))
                        {
                            // Fill it initially with the background color
                            m_pImage->Fill32(m_ulBackgroundColor);
                            // Create the display image
                            HX_RELEASE(m_pDisplayImage);
                            retVal = PXImage::CreateObject(&m_pDisplayImage);
                            if (SUCCEEDED(retVal))
                            {
                                // AddRef the object
                                m_pDisplayImage->AddRef();
                                // Init the display image
                                retVal = m_pDisplayImage->Create((INT32) m_ulImageWidth,  // width
                                                                 (INT32) m_ulImageHeight, // height
                                                                 32,                      // bpp
                                                                 HX_RGB,                 // color format
                                                                 ROWS_INVERTED,           // row inversion
                                                                 TRUE);                   // always allocate
                                if (SUCCEEDED(retVal))
                                {
                                    // Fill it initially with the background color
                                    m_pDisplayImage->Fill32(m_ulBackgroundColor);
                                    // Add the alpha channel to the background color
                                    UINT32 ulAlpha = 255 - m_ulBackgroundOpacity;
                                    m_ulBackgroundColor = (m_ulBackgroundColor & 0x00FFFFFF) |
                                                          (ulAlpha << 24);
                                    // Create the PNG decode object
                                    HX_RELEASE(m_pDecode);
                                    m_pDecode = new PXPNGDecode();
                                    if (m_pDecode)
                                    {
                                        // AddRef the object
                                        m_pDecode->AddRef();
                                        // Init the packet index
                                        m_ulPacketIndex = 0;
                                    }
                                    else
                                    {
                                        retVal = HXR_OUTOFMEMORY;
                                    }
                                }
                            }
                        }
                    }
                }
            }
            HX_RELEASE(pOpaque);
        }
        else
        {
            AddMimeToUpgradeCollection(m_ppszMimeType[0]);
        }
    }

    return retVal;
}


STDMETHODIMP PXPNGRenderer::OnPacketNoOffset(IHXPacket* pPacket)
{
#ifdef XXXMEH_DEBUG_LOG
    DEBUG_OUTF("c:\\png.log", (s, "OnPacketNoOffset(0x%08X)\n", this));
#endif
    HX_RESULT retVal = HXR_OK;

    if (pPacket)
    {
        if (m_pImage && m_pDecode)
        {
            if (!pPacket->IsLost())
            {
                // If the valid flag is TRUE, life is good. However, if valid is
                // FALSE, then we've lost a packet and we cannot recover, so
                // don't even try it.