h261video.cpp

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: h261video.cpp,v 1.1.8.1 2004/07/09 01:50:08 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 ***** */

/****************************************************************************
 *  Defines
 */
// #define ASYNC_RESIZE_OK
// #define ENABLE_TRACE

#define H261_VIDEO_RENDERER_NAME	"H261 Video"


/****************************************************************************
 *  Includes
 */
#include <stdio.h>
#include <string.h>

#include "h261rndr.ver"

#include "hxtypes.h"
#include "hxwintyp.h"
#include "hxresult.h"
#include "hxcom.h"
#include "hxevent.h"
#include "hxcomm.h"
#include "ihxpckts.h"
#include "hxcore.h"
#include "hxrendr.h"
#include "hxhyper.h"
#include "hxplugn.h"
#include "hxasm.h"
#include "hxupgrd.h"
#include "hxengin.h"
#include "hxprefs.h"
#include "hxerror.h"
#include "hxwin.h"
#include "hxvsurf.h"
#include "hxvctrl.h"
#include "hxsite2.h"
#include "hxthread.h"
#include "hxmon.h"
#include "hxformt.h"

#include "h261video.h"
#include "h261vidfmt.h"

#include "dllpath.h"
#include "hxheap.h"

#ifndef WIDTHBYTES
#define WIDTHBYTES(i)	((ULONG32)((i+31)&(~31))/8)	/* ULONG aligned ! */
#endif

/************************************************************************
 *  CH261VideoRenderer class
 */
/************************************************************************
 *  Constants
 */
const char* CH261VideoRenderer::zm_pDescription    = "RealNetworks H261 Video Renderer Plugin";

const char* CH261VideoRenderer::zm_pStreamMimeTypes[] =
{
    "video/H261",
    "video/h.261", 
    "video/h-261", 
    NULL
};


/************************************************************************
 *  Constructor/Destructor
 */
CH261VideoRenderer::CH261VideoRenderer(void)
{
    ;
}

CH261VideoRenderer::~CH261VideoRenderer()
{    
    ;
}


/************************************************************************
 *  Method:
 *    IHXPlugin::GetPluginInfo
 *  Purpose:
 *    Returns the basic information about this plugin. Including:
 *
 *    bLoadMultiple	whether or not this plugin DLL can be loaded
 *			multiple times. All File Formats must set
 *			this value to TRUE.
 *    pDescription	which is used in about UIs (can be NULL)
 *    pCopyright	which is used in about UIs (can be NULL)
 *    pMoreInfoURL	which is used in about UIs (can be NULL)
 */
STDMETHODIMP CH261VideoRenderer::GetPluginInfo
(
   REF(BOOL)        /*OUT*/ bLoadMultiple,
   REF(const char*) /*OUT*/ pDescription,
   REF(const char*) /*OUT*/ pCopyright,
   REF(const char*) /*OUT*/ pMoreInfoURL,
   REF(ULONG32)     /*OUT*/ ulVersionNumber
)
{
    HX_RESULT retVal;

    retVal = CVideoRenderer::GetPluginInfo(bLoadMultiple,
					   pDescription,
					   pCopyright,
					   pMoreInfoURL,
					   ulVersionNumber);

    if (SUCCEEDED(retVal))
    {
	pDescription    = zm_pDescription;
	ulVersionNumber = TARVER_ULONG32_VERSION;
    }
    
    return retVal;
}


/************************************************************************
 *  Method:
 *    IHXRenderer::GetRendererInfo
 *  Purpose:
 *    If this object is a file format object this method returns
 *    information vital to the instantiation of file format plugins.
 *    If this object is not a file format object, it should return
 *    HXR_UNEXPECTED.
 */
STDMETHODIMP CH261VideoRenderer::GetRendererInfo
(
    REF(const char**) /*OUT*/ pStreamMimeTypes,
    REF(UINT32)       /*OUT*/ unInitialGranularity
)
{
    HX_RESULT retVal;

    retVal = CVideoRenderer::GetRendererInfo(pStreamMimeTypes,
					     unInitialGranularity);

    if (SUCCEEDED(retVal))
    {
	pStreamMimeTypes = zm_pStreamMimeTypes;
    }
    
    return retVal;
}

/****************************************************************************
 *  CreateFormatObject
 */
CVideoFormat* CH261VideoRenderer::CreateFormatObject(IHXValues* pHeader)
{
    return new CH261VideoFormat(m_pCommonClassFactory, this);
}


/****************************************************************************
 *  GetRendererName
 */
const char* CH261VideoRenderer::GetRendererName(void)
{
    return H261_VIDEO_RENDERER_NAME;
}


/****************************************************************************
 *  SetupBitmapDefaults
 */
void CH261VideoRenderer::SetupBitmapDefaults(IHXValues* pHeader,
					     HXBitmapInfoHeader &bitmapInfoHeader)
{
    // size calculation is taken from crvvideo
    bitmapInfoHeader.biSize = sizeof (HXBitmapInfoHeader);
    bitmapInfoHeader.biWidth = 0;		// unknown
    bitmapInfoHeader.biHeight = 0;		// unknown
    bitmapInfoHeader.biPlanes = 1;
    bitmapInfoHeader.biBitCount = H261_PIXEL_SIZE;
    bitmapInfoHeader.biCompression = H261_PIXEL_FORMAT;
    bitmapInfoHeader.biSizeImage = bitmapInfoHeader.biWidth * 
				     bitmapInfoHeader.biHeight * 
				     bitmapInfoHeader.biBitCount / 
				     8;
    bitmapInfoHeader.biXPelsPerMeter = 0; 
    bitmapInfoHeader.biYPelsPerMeter = 0;
    bitmapInfoHeader.biClrUsed = 0;
    bitmapInfoHeader.biClrImportant = 0;
    bitmapInfoHeader.rcolor	= 0;
    bitmapInfoHeader.gcolor	= 0;
    bitmapInfoHeader.bcolor	= 0;    
}