/*
 * (C) 2003-2006 Gabest
 * (C) 2006-2024 see Authors.txt
 *
 * This file is part of MPC-BE.
 *
 * MPC-BE 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 3 of the License, or
 * (at your option) any later version.
 *
 * MPC-BE 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#pragma once

#include <memory>

class FilterOverride
{
public:
	bool fDisabled  = false;
	bool fTemporary = false;
	enum { REGISTERED, EXTERNAL } type = EXTERNAL;
	// REGISTERED
	CStringW dispname;
	// EXTERNAL
	CString path, name;
	CLSID clsid = GUID_NULL;
	// props
	std::list<GUID> guids;
	enum { PREFERRED, BLOCK, MERIT };
	int iLoadType = 0;
	DWORD dwMerit = 0;

	FilterOverride() = default;
	FilterOverride(FilterOverride* f)
        : fDisabled (f->fDisabled)
        , fTemporary(f->fTemporary)
        , type      (f->type)
        , dispname  (f->dispname)
        , path      (f->path)
        , name      (f->name)
        , clsid     (f->clsid)
        , guids     (f->guids)
        , iLoadType (f->iLoadType)
        , dwMerit   (f->dwMerit)
	{
	}
};

/*
class CFilterMapper2 : protected CUnknown, protected IFilterMapper2
{
	static bool fInitialized;

	CComPtr<IFilterMapper2> m_pFM2;
	CString m_path;

protected:
	DECLARE_IUNKNOWN;
	STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, void** ppv);

	// IFilterMapper2

	STDMETHODIMP CreateCategory(REFCLSID clsidCategory, DWORD dwCategoryMerit, LPCWSTR Description);
	STDMETHODIMP UnregisterFilter(const CLSID* pclsidCategory, const OLECHAR* szInstance, REFCLSID Filter);
	STDMETHODIMP RegisterFilter(REFCLSID clsidFilter, LPCWSTR Name, IMoniker** ppMoniker, const CLSID* pclsidCategory, const OLECHAR* szInstance, const REGFILTER2* prf2);
	STDMETHODIMP EnumMatchingFilters(IEnumMoniker** ppEnum, DWORD dwFlags, BOOL bExactMatch, DWORD dwMerit,
		BOOL bInputNeeded, DWORD cInputTypes, const GUID* pInputTypes, const REGPINMEDIUM* pMedIn, const CLSID* pPinCategoryIn, BOOL bRender,
		BOOL bOutputNeeded, DWORD cOutputTypes, const GUID* pOutputTypes, const REGPINMEDIUM* pMedOut, const CLSID* pPinCategoryOut);

public:
	CFilterMapper2();
	virtual ~CFilterMapper2();

	static void Init();

	static IFilterMapper2* m_pFilterMapper2;
	std::list<Filter*> m_filters;
	void Register(CString path);
};
*/

class CFilterMapper2 : protected CUnknown, public IFilterMapper2
{
	static bool fInitialized;

	CComPtr<IUnknown> m_pFM2;
	CString m_path;

	bool m_fRefCounted, m_fAllowUnreg;

protected:
	DECLARE_IUNKNOWN;
	STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, void** ppv);

	// IFilterMapper2

	STDMETHODIMP CreateCategory(REFCLSID clsidCategory, DWORD dwCategoryMerit, LPCWSTR Description);
	STDMETHODIMP UnregisterFilter(const CLSID* pclsidCategory, const OLECHAR* szInstance, REFCLSID Filter);
	STDMETHODIMP RegisterFilter(REFCLSID clsidFilter, LPCWSTR Name, IMoniker** ppMoniker, const CLSID* pclsidCategory, const OLECHAR* szInstance, const REGFILTER2* prf2);
	STDMETHODIMP EnumMatchingFilters(IEnumMoniker** ppEnum, DWORD dwFlags, BOOL bExactMatch, DWORD dwMerit,
									 BOOL bInputNeeded, DWORD cInputTypes, const GUID* pInputTypes, const REGPINMEDIUM* pMedIn, const CLSID* pPinCategoryIn, BOOL bRender,
									 BOOL bOutputNeeded, DWORD cOutputTypes, const GUID* pOutputTypes, const REGPINMEDIUM* pMedOut, const CLSID* pPinCategoryOut);

public:
	CFilterMapper2(bool fRefCounted, bool fAllowUnreg = false, LPUNKNOWN pUnkOuter = nullptr);
	virtual ~CFilterMapper2() = default;

	void SetInner(IUnknown* pUnk) {
		m_pFM2 = pUnk;
	}

	static void Init();

	static IFilterMapper2* m_pFilterMapper2;
	std::list<std::unique_ptr<FilterOverride>> m_filters;
	void Register(const CString& path);
};
