324 lines
12 KiB
C++
324 lines
12 KiB
C++
//------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 2001
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//
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// File: mbBehave.h
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//
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// Contents: mediaBar player behavior
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//
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// Classes: CMediaBehavior
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//
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//------------------------------------------------------------------------
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#ifndef _MB_BEHAVE_H_
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#define _MB_BEHAVE_H_
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#if _MSC_VER > 1000
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#pragma once
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#endif // _MSC_VER > 1000
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#include "dpa.h"
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#include "dspsprt.h"
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class CMediaBand;
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class CMediaBehavior;
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interface IMediaBehaviorContentProxy : public IUnknown
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{
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STDMETHOD(IsDisableUIRequested)(BOOL *pfRequested) PURE;
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STDMETHOD(OnUserOverrideDisableUI)(void) PURE;
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STDMETHOD(IsNextEnabled)(BOOL *pfEnabled) PURE;
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};
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// {F4C74D34-AB35-4d67-A7CF-7845548F45A8}
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DEFINE_GUID(IID_IMediaBehaviorContentProxy, 0xf4c74d34, 0xab35, 0x4d67, 0xa7, 0xcf, 0x78, 0x45, 0x54, 0x8f, 0x45, 0xa8);
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/*
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interface IMediaHost2 : public IMediaHost
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{
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virtual STDMETHOD(DetachBehavior)(void) PURE;
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virtual STDMETHOD(OnDisableUIChanged)(BOOL fDisabled) PURE;
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};
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// {895EBF7E-ECA0-4ba8-B0F2-89DEBF70DE65}
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DEFINE_GUID(IID_IMediaHost2, 0x895ebf7e, 0xeca0, 0x4ba8, 0xb0, 0xf2, 0x89, 0xde, 0xbf, 0x70, 0xde, 0x65);
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*/
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//------------------------------------------------------------------------
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//------------------------------------------------------------------------
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// need an additional operator to easily assign from VARIANTs
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class CComDispatchDriverEx : public CComDispatchDriver
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{
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public:
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IDispatch* operator=(VARIANT vt)
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{
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IDispatch *pThis = NULL;
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ASSERT((V_VT(&vt) == VT_UNKNOWN) || (V_VT(&vt) == VT_DISPATCH));
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if (V_VT(&vt) == VT_UNKNOWN)
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{
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pThis = (IDispatch*) AtlComQIPtrAssign((IUnknown**)&p, V_UNKNOWN(&vt), IID_IDispatch);
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}
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else if (V_VT(&vt) == VT_DISPATCH)
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{
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pThis = (IDispatch*)AtlComPtrAssign((IUnknown**)&p, V_DISPATCH(&vt));
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}
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// ISSUE could make more efforts to accept REF variants too
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return pThis;
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}
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// get a property by name with a single parameter
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HRESULT GetPropertyByName1(LPCOLESTR lpsz, VARIANT* pvarParam1, VARIANT* pVar)
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{
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DISPID dwDispID;
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HRESULT hr = GetIDOfName(lpsz, &dwDispID);
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if (SUCCEEDED(hr))
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{
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DISPPARAMS dispparams = { pvarParam1, NULL, 1, 0};
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return p->Invoke(dwDispID, IID_NULL,
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LOCALE_USER_DEFAULT, DISPATCH_PROPERTYGET,
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&dispparams, pVar, NULL, NULL);
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}
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return hr;
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}
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};
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//------------------------------------------------------------------------
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//------------------------------------------------------------------------
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class CWMPWrapper
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{
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public:
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HRESULT AttachToWMP();
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protected:
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virtual HRESULT FetchWmpObject(IDispatch *pdispWmpPlayer, OUT VARIANT *pvtWrapperObj) = 0;
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STDMETHODIMP_(ULONG) _AddRef(void)
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{
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_cRef++;
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return _cRef;
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}
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STDMETHODIMP_(ULONG) _Release(void)
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{
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ASSERT(_cRef > 0);
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_cRef--;
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if (_cRef > 0) return _cRef;
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delete this;
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return 0;
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}
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HRESULT _getVariantProp(LPCOLESTR pwszPropName, VARIANT *pvtParam, VARIANT *pvtValue, BOOL fCallMethod = FALSE);
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HRESULT _getStringProp(LPCOLESTR pwszPropName, VARIANT *pvtParam, OUT BSTR *pbstrValue, BOOL fCallMethod = FALSE);
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protected:
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CWMPWrapper(CMediaBehavior* pHost);
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virtual ~CWMPWrapper();
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protected:
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CMediaBehavior * _pHost;
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CComDispatchDriverEx _pwmpWrapper;
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BOOL _fStale;
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private:
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ULONG _cRef;
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};
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//------------------------------------------------------------------------
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//------------------------------------------------------------------------
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class CMediaItem : public CWMPWrapper,
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public IMediaItem,
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protected CImpIDispatch
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{
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typedef CWMPWrapper super;
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public:
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// *** IUnknown ***
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STDMETHOD(QueryInterface)(REFIID riid, LPVOID * ppvObj);
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STDMETHODIMP_(ULONG) AddRef(void) { return _AddRef(); }
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STDMETHODIMP_(ULONG) Release(void) { return _Release(); }
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// *** IDispatch ***
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virtual STDMETHODIMP GetTypeInfoCount(UINT * pctinfo)
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{ return CImpIDispatch::GetTypeInfoCount(pctinfo); }
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virtual STDMETHODIMP GetTypeInfo(UINT itinfo, LCID lcid, ITypeInfo **pptinfo)
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{ return CImpIDispatch::GetTypeInfo(itinfo, lcid, pptinfo); }
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virtual STDMETHODIMP GetIDsOfNames(REFIID riid, OLECHAR **rgszNames, UINT cNames, LCID lcid, DISPID * rgdispid)
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{ return CImpIDispatch::GetIDsOfNames(riid, rgszNames, cNames, lcid, rgdispid); }
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virtual STDMETHODIMP Invoke(DISPID dispidMember, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS * pdispparams, VARIANT * pvarResult, EXCEPINFO * pexcepinfo, UINT * puArgErr)
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{ return CImpIDispatch::Invoke(dispidMember, riid, lcid, wFlags, pdispparams, pvarResult, pexcepinfo, puArgErr); }
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// *** IMediaItem
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STDMETHOD(get_sourceURL)(BSTR *pbstrSourceURL);
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STDMETHOD(get_name)(BSTR *pbstrName);
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STDMETHOD(get_duration)(double * pDuration);
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STDMETHOD(get_attributeCount)(long *plCount);
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STDMETHOD(getAttributeName)(long lIndex, BSTR *pbstrItemName);
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STDMETHOD(getItemInfo)(BSTR bstrItemName, BSTR *pbstrVal);
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protected:
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virtual HRESULT FetchWmpObject(IDispatch *pdispWmpPlayer, OUT VARIANT *pvtWrapperObj);
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friend CMediaItem* CMediaItem_CreateInstance(CMediaBehavior* pHost);
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CMediaItem(CMediaBehavior* pHost);
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virtual ~CMediaItem();
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private:
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};
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//------------------------------------------------------------------------
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//------------------------------------------------------------------------
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class CMediaItemNext : public CMediaItem
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{
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public:
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protected:
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virtual HRESULT FetchWmpObject(IDispatch *pdispWmpPlayer, OUT VARIANT *pvtWrapperObj);
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friend CMediaItemNext* CMediaItemNext_CreateInstance(CMediaBehavior* pHost);
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CMediaItemNext(CMediaBehavior* pHost);
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virtual ~CMediaItemNext();
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private:
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};
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//------------------------------------------------------------------------
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//------------------------------------------------------------------------
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class CPlaylistInfo : public CWMPWrapper,
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public IPlaylistInfo,
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protected CImpIDispatch
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{
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typedef CWMPWrapper super;
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public:
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// *** IUnknown ***
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STDMETHOD(QueryInterface)(REFIID riid, LPVOID * ppvObj);
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STDMETHODIMP_(ULONG) AddRef(void) { return _AddRef(); }
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STDMETHODIMP_(ULONG) Release(void) { return _Release(); }
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// *** IDispatch ***
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virtual STDMETHODIMP GetTypeInfoCount(UINT * pctinfo)
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{ return CImpIDispatch::GetTypeInfoCount(pctinfo); }
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virtual STDMETHODIMP GetTypeInfo(UINT itinfo, LCID lcid, ITypeInfo **pptinfo)
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{ return CImpIDispatch::GetTypeInfo(itinfo, lcid, pptinfo); }
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virtual STDMETHODIMP GetIDsOfNames(REFIID riid, OLECHAR **rgszNames, UINT cNames, LCID lcid, DISPID * rgdispid)
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{ return CImpIDispatch::GetIDsOfNames(riid, rgszNames, cNames, lcid, rgdispid); }
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virtual STDMETHODIMP Invoke(DISPID dispidMember, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS * pdispparams, VARIANT * pvarResult, EXCEPINFO * pexcepinfo, UINT * puArgErr)
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{ return CImpIDispatch::Invoke(dispidMember, riid, lcid, wFlags, pdispparams, pvarResult, pexcepinfo, puArgErr); }
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// *** IPlaylistInfo
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STDMETHOD(get_name)(BSTR *pbstrName);
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STDMETHOD(get_attributeCount)(long *plCount);
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STDMETHOD(getAttributeName)(long lIndex, BSTR *pbstrItemName);
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STDMETHOD(getItemInfo)(BSTR bstrItemName, BSTR *pbstrVal);
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protected:
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virtual HRESULT FetchWmpObject(IDispatch *pdispWmpPlayer, OUT VARIANT *pvtWrapperObj);
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friend CPlaylistInfo* CPlaylistInfo_CreateInstance(CMediaBehavior* pHost);
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CPlaylistInfo(CMediaBehavior* pHost);
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private:
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virtual ~CPlaylistInfo();
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private:
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};
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//------------------------------------------------------------------------
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//------------------------------------------------------------------------
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class CMediaBehavior : public IMediaBehavior,
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public IElementBehavior,
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public IContentProxy,
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public IMediaBehaviorContentProxy,
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protected CImpIDispatch
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{
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public:
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// *** IUnknown ***
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STDMETHOD(QueryInterface)(REFIID riid, LPVOID * ppvObj);
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STDMETHODIMP_(ULONG) AddRef(void)
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{
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_cRef++;
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return _cRef;
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}
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STDMETHODIMP_(ULONG) Release(void)
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{
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ASSERT(_cRef > 0);
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_cRef--;
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if (_cRef > 0) return _cRef;
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delete this;
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return 0;
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}
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// *** IDispatch ***
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virtual STDMETHODIMP GetTypeInfoCount(UINT * pctinfo)
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{ return CImpIDispatch::GetTypeInfoCount(pctinfo); }
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virtual STDMETHODIMP GetTypeInfo(UINT itinfo, LCID lcid, ITypeInfo **pptinfo)
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{ return CImpIDispatch::GetTypeInfo(itinfo, lcid, pptinfo); }
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virtual STDMETHODIMP GetIDsOfNames(REFIID riid, OLECHAR **rgszNames, UINT cNames, LCID lcid, DISPID * rgdispid)
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{ return CImpIDispatch::GetIDsOfNames(riid, rgszNames, cNames, lcid, rgdispid); }
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virtual STDMETHODIMP Invoke(DISPID dispidMember, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS * pdispparams, VARIANT * pvarResult, EXCEPINFO * pexcepinfo, UINT * puArgErr);
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// *** IElementBehavior ***
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STDMETHOD(Detach)(void);
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STDMETHOD(Init)(IElementBehaviorSite* pBehaviorSite);
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STDMETHOD(Notify)(LONG lEvent, VARIANT* pVar);
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// *** IMediaBehavior ***
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STDMETHOD(playURL)(BSTR bstrURL, BSTR bstrMIME);
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STDMETHOD(stop)();
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STDMETHOD(playNext)();
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STDMETHOD(get_currentItem)(IMediaItem **ppMediaItem);
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STDMETHOD(get_nextItem)(IMediaItem **ppMediaItem);
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STDMETHOD(get_playlistInfo)(IPlaylistInfo **ppPlaylistInfo);
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STDMETHOD(get_hasNextItem)(VARIANT_BOOL *pfhasNext);
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STDMETHOD(get_playState)(mbPlayState *pps);
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STDMETHOD(get_openState)(mbOpenState *pos);
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STDMETHOD(get_enabled)(VARIANT_BOOL *pbEnabled);
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STDMETHOD(put_enabled)(VARIANT_BOOL bEnabled);
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STDMETHOD(get_disabledUI)(VARIANT_BOOL *pbDisabled);
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STDMETHOD(put_disabledUI)(VARIANT_BOOL bDisable);
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// *** IContentProxy **
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STDMETHOD(fireEvent)(enum contentProxyEvent event);
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STDMETHOD(OnCreatedPlayer)(void);
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STDMETHOD(detachPlayer)(void);
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// *** IMediaBehaviorContentProxy **
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STDMETHOD(IsDisableUIRequested)(BOOL *pfRequested);
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STDMETHOD(OnUserOverrideDisableUI)(void);
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STDMETHOD(IsNextEnabled)(BOOL *pfEnabled);
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HRESULT getWMP(IDispatch **ppPlayer);
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HRESULT getPlayListIndex(LONG *plIndex, LONG *plCount);
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protected:
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friend CMediaBehavior* CMediaBehavior_CreateInstance(CMediaBand* pHost);
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CMediaBehavior(CMediaBand* pHost);
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private:
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virtual ~CMediaBehavior();
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private:
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HRESULT _ConnectToWmpEvents(BOOL fConnect);
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BOOL _ProcessEvent(DISPID dispid, long lCount, VARIANT varParams[]);
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private:
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ULONG _cRef;
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CMediaBand * _pHost;
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CComPtr<IElementBehaviorSite> _pBehaviorSite;
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CComPtr<IElementBehaviorSiteOM> _pBehaviorSiteOM;
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DWORD _dwcpCookie;
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BOOL _fDisabledUI;
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CDPA<CMediaItem> _apMediaItems;
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BOOL _fPlaying;
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};
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//------------------------------------------------------------------------
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#endif // _MB_BEHAVE_H_
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