GraphBuilder.h

/* 
 *      Copyright (C) 2003-2005 Gabest
 *      http://www.gabest.org
 *
 *  This Program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *   
 *  This Program 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 General Public License for more details.
 *   
 *  You should have received a copy of the GNU General Public License
 *  along with GNU Make; see the file COPYING.  If not, write to
 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 
 *  http://www.gnu.org/copyleft/gpl.html
 *
 */

#pragma once

#include <atlcoll.h>

#define LMERIT(m) ((ULONGLONG(m))<<16)
#define LMERIT_DO_NOT_USE LMERIT(MERIT_DO_NOT_USE)
#define LMERIT_DO_USE LMERIT(MERIT_DO_NOT_USE+1)
#define LMERIT_UNLIKELY (LMERIT(MERIT_UNLIKELY))
#define LMERIT_NORMAL (LMERIT(MERIT_NORMAL))
#define LMERIT_PREFERRED (LMERIT(MERIT_PREFERRED))
#define LMERIT_ABOVE_DSHOW (LMERIT(1)<<32)

class CGraphFilter
{
protected:
        CStringW m_name;
        struct {union {ULONGLONG val; struct {ULONGLONG low:16, mid:32, high:16;};};} m_merit;
        CLSID m_clsid;
        CList<GUID> m_guids;

public:
        CGraphFilter(CStringW name = L"", ULONGLONG merit = LMERIT_DO_USE);
        virtual ~CGraphFilter() {}

        CStringW GetName() {return(m_name);}
        ULONGLONG GetMerit() {return(m_merit.val);}
        DWORD GetDWORDMerit() {return(m_merit.mid);}
        CLSID GetCLSID() {return(m_clsid);}
        void GetGUIDs(CList<GUID>& guids) {guids.RemoveAll(); guids.AddTail(&m_guids);}
        void SetGUIDs(CList<GUID>& guids) {m_guids.RemoveAll(); m_guids.AddTail(&guids);}
        bool IsExactMatch(CArray<GUID>& guids);
        bool IsCompatible(CArray<GUID>& guids);

        virtual HRESULT Create(IBaseFilter** ppBF, IUnknown** ppUnk) = 0;
};

class CGraphRegFilter : public CGraphFilter
{
protected:
        CStringW m_dispname;
        CComPtr<IMoniker> m_pMoniker;

        void ExtractFilterData(BYTE* p, UINT len);

public:
        CGraphRegFilter(IMoniker* pMoniker, ULONGLONG merit = LMERIT_DO_USE);
        CGraphRegFilter(CStringW m_dispname, ULONGLONG merit = LMERIT_DO_USE);
        CGraphRegFilter(const CLSID& clsid, ULONGLONG merit = LMERIT_DO_USE);

        CStringW GetDispName() {return(m_dispname);}
        CComPtr<IMoniker> GetMoniker() {return(m_pMoniker);}

        HRESULT Create(IBaseFilter** ppBF, IUnknown** ppUnk);
};

class CGraphCustomFilter : public CGraphFilter
{
public:
        CGraphCustomFilter(const CLSID& clsid, CList<GUID>& guids, CStringW name = L"", ULONGLONG merit = LMERIT_DO_USE);

        HRESULT Create(IBaseFilter** ppBF, IUnknown** ppUnk);
};

class CGraphFileFilter : public CGraphCustomFilter
{
protected:
        CString m_path;
        HINSTANCE m_hInst;

public:
        CGraphFileFilter(const CLSID& clsid, CList<GUID>& guids, CString path, CStringW name = L"", ULONGLONG merit = LMERIT_DO_USE);

        HRESULT Create(IBaseFilter** ppBF, IUnknown** ppUnk);
};

class CGraphRendererFilter : public CGraphFilter
{
protected:
        CLSID m_clsid;
        HWND m_hWnd;

public:
        CGraphRendererFilter(const CLSID& clsid, HWND hWnd, CStringW name = L"", ULONGLONG merit = LMERIT_DO_USE);

        HRESULT Create(IBaseFilter** ppBF, IUnknown** ppUnk);
};

class CGraphBuilder
{
public:
        typedef struct {int nStream; CString clsid, filter, pin; CList<CMediaType> mts; CList<CString> path;} DeadEnd;

protected:
        HWND m_hWnd;
        CComPtr<IGraphBuilder> m_pGB;
        CComPtr<IFilterMapper2> m_pFM;
        CInterfaceList<IUnknown, &IID_IUnknown> m_pUnks;
        CAutoPtrList<CGraphFilter> m_pMoreFilters;
        ULONGLONG m_VRMerit, m_ARMerit;

        UINT m_nTotalStreams, m_nCurrentStream;
        CList<CGraphFilter*> m_chain;

        void ExtractMediaTypes(IPin* pPin, CArray<GUID>& guids);
        void ExtractMediaTypes(IPin* pPin, CList<CMediaType>& mts);

        void SaveFilters(CInterfaceList<IBaseFilter>& bfl);
        void RestoreFilters(CInterfaceList<IBaseFilter>& bfl);

        HRESULT SafeAddFilter(IBaseFilter* pBF, LPCWSTR pName);

        CAutoPtrArray<DeadEnd> m_DeadEnds;
/*
        CList<CString> m_log;
        void LOG(LPCTSTR fmt, ...);
*/
        HRESULT ConnectDirect(IPin* pPin, IBaseFilter* pBF, const AM_MEDIA_TYPE* pmt = NULL);

public:
        CGraphBuilder(IGraphBuilder* pGB, HWND hWnd);
        virtual ~CGraphBuilder();

        void Reset();

        void AddFilter(CGraphFilter* pFilter) {if(pFilter) {CAutoPtr<CGraphFilter> f(pFilter); m_pMoreFilters.AddTail(f);}}
        void RemoveFilters() {m_pMoreFilters.RemoveAll();}

        HRESULT AddSourceFilter(LPCTSTR fn, IBaseFilter** ppBF, UINT SrcFilters = 0xffffffff);

        HRESULT Render(LPCTSTR fn);
        HRESULT Render(IBaseFilter* pBF);
        HRESULT Render(IPin* pPin);

        HRESULT FindInterface(REFIID iid, void** ppv);

        int GetStreamCount() {return m_nTotalStreams;}
        DeadEnd* GetDeadEnd(int i) {return (i >= 0 && i < (int)m_DeadEnds.GetCount()) ? (DeadEnd*)m_DeadEnds[i] : NULL;}
};

class CGraphBuilderFile : public CGraphBuilder
{
public:
        CGraphBuilderFile(IGraphBuilder* pGB, HWND hWnd);
};

class CGraphBuilderDVD : public CGraphBuilderFile
{
public:
        CGraphBuilderDVD(IGraphBuilder* pGB, HWND hWnd);

        HRESULT Render(CString fn, CString& path);
};

class CGraphBuilderCapture : public CGraphBuilderFile
{
public:
        CGraphBuilderCapture(IGraphBuilder* pGB, HWND hWnd);
};

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