fxmanagr.cpp

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: fxmanagr.cpp,v 1.1.24.1 2004/07/09 01:51:47 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:
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 * ***** END LICENSE BLOCK ***** */

// include
#include "hxtypes.h"
#include "hxwintyp.h"
#include "hxresult.h"
#include "hxcom.h"
#include "hxwin.h"
#include "ihxpckts.h"
#include "hxvsurf.h"
#include "hxfiles.h"
#include "hxerror.h"

#ifdef _MACINTOSH
#include "hxwin.h"	/* for _HXFocusContext; needed for other platforms too? */
#endif

// pncont
#include "hxslist.h"
#include "hxmap.h"

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

// pxcomlib
#include "pxcolor.h"
#include "pxrect.h"
#include "pxeffect.h"
#include "pximage.h"
#include "pxcmpmgr.h"
#include "pxrndcod.h"
#include "rpeffect.h"
#include "pxtime.h"

// pxrend
#include "hlinkmgr.h"
#include "imghelpr.h"
#include "rncodmgr.h"
#include "imagemgr.h"
#include "fxseshun.h"
#include "fxpkgmgr.h"
#include "fxmanagr.h"

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

BEGIN_INTERFACE_LIST(PXEffectsManager)
END_INTERFACE_LIST

PXEffectsManager::PXEffectsManager()
{
    m_pErrorMessages           = NULL;
    m_pImageManager            = NULL;
    m_pEffectsPackageManager   = NULL;
    m_pHyperlinkManager        = NULL;
    m_pEffectsList             = NULL;
    m_pEffectSessionList       = NULL;
    m_pPostDurationList        = NULL;
    m_pFadeLUT                 = NULL;
    m_pAlphaLUT                = NULL;
    m_bInitialized             = FALSE;
    m_bRedrawForced            = FALSE;
    m_ulNextEffectHandle       = 1;
    m_pLastEffect              = NULL;
    m_bCheckIndefiniteDuration = FALSE;
    m_bBackChannelNotify       = FALSE;
    m_ulBackChannelHandle      = 0;
    m_bIsLive                  = FALSE;
    ResetDamage();
}

PXEffectsManager::~PXEffectsManager()
{
    HX_RELEASE(m_pErrorMessages);
    HX_RELEASE(m_pImageManager);
    HX_RELEASE(m_pEffectsPackageManager);
    HX_RELEASE(m_pHyperlinkManager);
    DeleteEffectsList();
    DeleteEffectSessionList();
    DeletePostDurationList();
    HX_DELETE(m_pEffectsList);
    HX_DELETE(m_pEffectSessionList);
    HX_DELETE(m_pPostDurationList);
    HX_VECTOR_DELETE(m_pFadeLUT);
    HX_VECTOR_DELETE(m_pAlphaLUT);
    HX_RELEASE(m_pLastEffect);
}

HX_RESULT PXEffectsManager::Init(IHXErrorMessages*       pErrorMessages,
                                 PXImageManager*          pImageManager,
                                 PXEffectsPackageManager* pEffectsPackageManager,
                                 PXHyperlinkManager*      pHyperlinkManager)
{
    HX_RESULT retVal = HXR_OK;

    if (pImageManager)
    {
        // Reset the damage rect
        ResetDamage();

        // Reset the next effect handle
        m_ulNextEffectHandle = 1;

        // Save a copy of the IHXErrorMessages interface, if present
        HX_RELEASE(m_pErrorMessages);
        if (pErrorMessages)
        {
            m_pErrorMessages = pErrorMessages;
            m_pErrorMessages->AddRef();
        }

        // Save a copy of the image manager
        HX_RELEASE(m_pImageManager);
        m_pImageManager = pImageManager;
        m_pImageManager->AddRef();

        // Save a copy of the effects package manager
        HX_RELEASE(m_pEffectsPackageManager);
        m_pEffectsPackageManager = pEffectsPackageManager;
        m_pEffectsPackageManager->AddRef();

        // Save a copy of the hyperlink manager
        HX_RELEASE(m_pHyperlinkManager);
        m_pHyperlinkManager = pHyperlinkManager;
        m_pHyperlinkManager->AddRef();

        // Create the effect list
        DeleteEffectsList();
        HX_DELETE(m_pEffectsList);
        m_pEffectsList = new CHXSimpleList();
        if (m_pEffectsList)
        {
            // Create the effect session list
            DeleteEffectSessionList();
            HX_DELETE(m_pEffectSessionList);
            m_pEffectSessionList = new CHXSimpleList();
            if (m_pEffectSessionList)
            {
                // Create the post-duration list
                DeletePostDurationList();
                HX_DELETE(m_pPostDurationList);
                m_pPostDurationList = new CHXSimpleList();
                if (m_pPostDurationList)
                {
                    // Set up parameters for LUTs
                    m_ulLUTWidth      = 1 << m_pImageManager->GetMaxChannelDepth();
                    UINT32 ulNumBytes = m_ulLUTWidth * (kEffectLUTGranularity + 1);

                    // Allocate normal fade LUT
                    HX_VECTOR_DELETE(m_pFadeLUT);
                    m_pFadeLUT = new BYTE [ulNumBytes];
                    if (m_pFadeLUT)
                    {
                        // Set up the fade LUT
                        BYTE* pLUT = m_pFadeLUT;
                        for (UINT32 ulFrac = 0; ulFrac <= kEffectLUTGranularity; ulFrac++)
                        {
                            for (UINT32 ulPixVal = 0; ulPixVal < m_ulLUTWidth; ulPixVal++)
                            {
                                *pLUT++ = (BYTE) ((ulPixVal * ulFrac) / kEffectLUTGranularity);
                            }
                        }
                        // Allocate the alpha LUT
                        //
                        HX_VECTOR_DELETE(m_pAlphaLUT);
                        m_pAlphaLUT = new BYTE [256 * 256];
                        if (m_pAlphaLUT)
                        {
                            // Set up the alpha LUT
                            pLUT = m_pAlphaLUT;
                            for (UINT32 i = 0; i < 256; i++)
                            {
                                for (UINT32 j = 0; j < 256; j++)
                                {
                                    *pLUT++ = (BYTE) (j * i / 255);
                                }
                            }
                        }
                        else
                        {
                            retVal = HXR_OUTOFMEMORY;
                        }
                    }
                    else
                    {
                        retVal = HXR_OUTOFMEMORY;
                    }
                }
                else
                {
                    retVal = HXR_OUTOFMEMORY;
                }
            }
            else
            {
                retVal = HXR_OUTOFMEMORY;
            }
        }
        else
        {
            retVal = HXR_OUTOFMEMORY;
        }
    }
    else
    {
        retVal = HXR_INVALID_PARAMETER;
    }

    return retVal;
}

void PXEffectsManager::ClearEffects()
{
    DeleteEffectsList();
    DeleteEffectSessionList();
    DeletePostDurationList();
}

HX_RESULT PXEffectsManager::AddEffect(PXEffect *pEffect)
{
    HX_RESULT retVal = HXR_OK;

    if (pEffect)
    {
        if (m_pEffectsList)
        {
            // Set the effect's ID handle
            pEffect->SetHandle(m_ulNextEffectHandle);

            // Increment the handle with 32-bit wrap (like we're really gonna need it)
            m_ulNextEffectHandle = (m_ulNextEffectHandle == 0xFFFFFFFF ? 1 : m_ulNextEffectHandle + 1);

            // Before we add it to the list, we adjust for zero values in the
            // dst rect. Zero values of width or height imply the entire
            // width or height of the appropriate image. First we adjust for zero
            // width and height in the display rect.
            PXRect cRect;
            cRect = pEffect->GetDstRect();
            cRect.AdjustForZeroValues(m_pImageManager->GetDisplayWidth(),
                                      m_pImageManager->GetDisplayHeight());
            pEffect->SetDstRect(cRect);

            // Do we have a src rect?
            if (pEffect->HasTarget())
            {
                // We do the same (adjust for zero-values) for src rects. We
                // *may* not have the target image yet, although we most likely will.
                PXImage* pTargetImage = NULL;
                m_pImageManager->GetImage(pEffect->GetTarget(), &pTargetImage);
                if (pTargetImage)
                {
                    cRect = pEffect->GetSrcRect();
                    cRect.AdjustForZeroValues((UINT32) pTargetImage->GetWidth(),
                                              (UINT32) pTargetImage->GetHeight());
                    pEffect->SetSrcRect(cRect);
                }
                HX_RELEASE(pTargetImage);
            }

            // If this is a viewchange effect, then we need to set the
            // starting src and dst rects
            //
            // XXXMEH - this is a design error in the .rp language - the starting
            // src and dst rects for the viewchange should be specified IN THAT effect
            // with new attributes rather than relying on whatever the last effect was.
            if (pEffect->GetEffectType() == PXEffect::kEffectTypeViewChange && m_pLastEffect)
            {
                pEffect->SetStartSrcRect(m_pLastEffect->GetSrcRect());
                pEffect->SetStartDstRect(m_pLastEffect->GetDstRect());
                if (m_pLastEffect->HasTarget())
                {
                    pEffect->SetTarget(m_pLastEffect->GetTarget());
                    if (m_pLastEffect->GetLastUse() == TRUE)
                    {
                        m_pLastEffect->SetLastUse(FALSE);
                        pEffect->SetLastUse(TRUE);
                    }
                }
            }

            // Update the last effect
            HX_RELEASE(m_pLastEffect);
            m_pLastEffect = pEffect;
            m_pLastEffect->AddRef();

            // Check for a few shortcuts before searching the whole list
            // If there aren't any elements in the queue, we know just to
            // add ourselves to the end of the list.
            if (m_pEffectsList->GetCount())
            {
                // Now we check the last element in the queue. If our start time is
                // greater than or equal to its start time, then we know just to
                // add ourselves at the tail of the queue.
                PXEffect *pTailEffect = (PXEffect *) m_pEffectsList->GetTail();
                if (pTailEffect)
                {
                    if (IsTimeLater(pEffect->GetStart(), pTailEffect->GetStart()))
                    {
                        // Now we have to search the list.
                        // Insert effect into list which is sorted by increasing start time
                        // We look for the first effect which has a start time greater
                        // than the one we're inserting
                        LISTPOSITION pos = m_pEffectsList->GetHeadPosition();
                        while (pos)
                        {
                            PXEffect *pListEffect = (PXEffect *) m_pEffectsList->GetAt(pos);
                            if (pListEffect)
                            {
                                if (IsTimeLater(pEffect->GetStart(), pListEffect->GetStart()))
                                {
                                    // Addref effect before insertion
                                    pEffect->AddRef();
                                    // Insert into the list
                                    m_pEffectsList->InsertBefore(pos, (void *) pEffect);
                                    break;
                                }
                                m_pEffectsList->GetNext(pos);
                            }
                            else