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//
// libavg - Media Playback Engine.
// Copyright (C) 2003-2014 Ulrich von Zadow
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Current versions can be found at www.libavg.de
//
#ifndef _DSSampleGrabber_H_
#define _DSSampleGrabber_H_
#include "IDSSampleCallback.h"
#include "../base/Exception.h"
#include <Guiddef.h>
#define _WIN32_DCOM
#include <windows.h>
#include <dshow.h>
#include <dshowbase/mtype.h>
#include <dshowbase/wxdebug.h>
#include <dshowbase/combase.h>
#include <dshowbase/reftime.h>
#include <dshowbase/wxutil.h>
#include <dshowbase/wxlist.h>
#include <dshowbase/amfilter.h>
#include <dshowbase/transfrm.h>
#include <dshowbase/transip.h>
// {87F09DC5-12BC-479d-A20F-21133C613037}
DEFINE_GUID(IID_IlibavgGrabber,
0x87f09dc5, 0x12bc, 0x479d, 0xa2, 0xf, 0x21, 0x13, 0x3c, 0x61, 0x30, 0x37);
namespace avg {
MIDL_INTERFACE("6B652FFF-11FE-4FCE-92AD-0266B5D7C78F")
IlibavgGrabber : public IUnknown
{
public:
virtual void STDMETHODCALLTYPE SetCallback(IDSSampleCallback* pCallback) = 0;
};
class CSampleGrabberInPin;
class CSampleGrabber : public CTransInPlaceFilter, IlibavgGrabber
{
public:
CSampleGrabber(IUnknown* pOuter, HRESULT* pHr);
STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, void** ppv);
DECLARE_IUNKNOWN;
// IlibavgGrabber
void STDMETHODCALLTYPE SetCallback(IDSSampleCallback* pCallback);
protected:
IDSSampleCallback* m_pCallback;
CCritSec m_Lock; // serialize access to our data
HRESULT CheckInputType(const CMediaType* pmt);
HRESULT Transform(IMediaSample* pms);
// override this so we can return S_FALSE directly.
// The base class CTransInPlace
// Transform( ) method is called by it's
// Receive( ) method. There is no way
// to get Transform( ) to return an S_FALSE value
// (which means "stop giving me data"),
// to Receive( ) and get Receive( ) to return S_FALSE as well.
HRESULT Receive(IMediaSample* pms);
private:
friend class CSampleGrabberInPin;
};
};
#endif
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