Alexandre Lision | 8af73cb | 2013-12-10 14:11:20 -0500 | [diff] [blame] | 1 | //------------------------------------------------------------------------------
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| 2 | // File: CtlUtil.cpp
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| 3 | //
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| 4 | // Desc: DirectShow base classes.
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| 5 | //
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| 6 | // Copyright (c) 1992-2001 Microsoft Corporation. All rights reserved.
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| 7 | //------------------------------------------------------------------------------
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| 8 |
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| 9 |
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| 10 | // Base classes implementing IDispatch parsing for the basic control dual
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| 11 | // interfaces. Derive from these and implement just the custom method and
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| 12 | // property methods. We also implement CPosPassThru that can be used by
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| 13 | // renderers and transforms to pass by IMediaPosition and IMediaSeeking
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| 14 |
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| 15 | #include <pjmedia-videodev/config.h>
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| 16 |
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| 17 | #if defined(PJMEDIA_VIDEO_DEV_HAS_DSHOW) && PJMEDIA_VIDEO_DEV_HAS_DSHOW != 0
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| 18 |
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| 19 | #include <streams.h>
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| 20 | #include <limits.h>
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| 21 | #include "seekpt.h"
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| 22 |
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| 23 | // 'bool' non standard reserved word
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| 24 | #pragma warning(disable:4237)
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| 25 |
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| 26 |
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| 27 | // --- CBaseDispatch implementation ----------
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| 28 | CBaseDispatch::~CBaseDispatch()
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| 29 | {
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| 30 | if (m_pti) {
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| 31 | m_pti->Release();
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| 32 | }
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| 33 | }
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| 34 |
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| 35 |
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| 36 | // return 1 if we support GetTypeInfo
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| 37 |
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| 38 | STDMETHODIMP
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| 39 | CBaseDispatch::GetTypeInfoCount(__out UINT * pctinfo)
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| 40 | {
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| 41 | CheckPointer(pctinfo,E_POINTER);
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| 42 | ValidateReadWritePtr(pctinfo,sizeof(UINT *));
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| 43 | *pctinfo = 1;
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| 44 | return S_OK;
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| 45 | }
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| 46 |
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| 47 |
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| 48 | typedef HRESULT (STDAPICALLTYPE *LPLOADTYPELIB)(
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| 49 | const OLECHAR FAR *szFile,
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| 50 | __deref_out ITypeLib FAR* FAR* pptlib);
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| 51 |
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| 52 | typedef HRESULT (STDAPICALLTYPE *LPLOADREGTYPELIB)(REFGUID rguid,
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| 53 | WORD wVerMajor,
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| 54 | WORD wVerMinor,
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| 55 | LCID lcid,
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| 56 | __deref_out ITypeLib FAR* FAR* pptlib);
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| 57 |
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| 58 | // attempt to find our type library
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| 59 |
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| 60 | STDMETHODIMP
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| 61 | CBaseDispatch::GetTypeInfo(
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| 62 | REFIID riid,
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| 63 | UINT itinfo,
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| 64 | LCID lcid,
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| 65 | __deref_out ITypeInfo ** pptinfo)
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| 66 | {
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| 67 | CheckPointer(pptinfo,E_POINTER);
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| 68 | ValidateReadWritePtr(pptinfo,sizeof(ITypeInfo *));
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| 69 | HRESULT hr;
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| 70 |
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| 71 | *pptinfo = NULL;
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| 72 |
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| 73 | // we only support one type element
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| 74 | if (0 != itinfo) {
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| 75 | return TYPE_E_ELEMENTNOTFOUND;
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| 76 | }
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| 77 |
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| 78 | if (NULL == pptinfo) {
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| 79 | return E_POINTER;
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| 80 | }
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| 81 |
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| 82 | // always look for neutral
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| 83 | if (NULL == m_pti) {
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| 84 |
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| 85 | LPLOADTYPELIB lpfnLoadTypeLib;
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| 86 | LPLOADREGTYPELIB lpfnLoadRegTypeLib;
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| 87 | ITypeLib *ptlib;
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| 88 | HINSTANCE hInst;
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| 89 |
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| 90 | static const char szTypeLib[] = "LoadTypeLib";
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| 91 | static const char szRegTypeLib[] = "LoadRegTypeLib";
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| 92 | static const WCHAR szControl[] = L"control.tlb";
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| 93 |
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| 94 | //
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| 95 | // Try to get the Ole32Aut.dll module handle.
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| 96 | //
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| 97 |
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| 98 | hInst = LoadOLEAut32();
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| 99 | if (hInst == NULL) {
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| 100 | DWORD dwError = GetLastError();
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| 101 | return AmHresultFromWin32(dwError);
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| 102 | }
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| 103 | lpfnLoadRegTypeLib = (LPLOADREGTYPELIB)GetProcAddress(hInst,
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| 104 | szRegTypeLib);
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| 105 | if (lpfnLoadRegTypeLib == NULL) {
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| 106 | DWORD dwError = GetLastError();
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| 107 | return AmHresultFromWin32(dwError);
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| 108 | }
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| 109 |
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| 110 | hr = (*lpfnLoadRegTypeLib)(LIBID_QuartzTypeLib, 1, 0, // version 1.0
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| 111 | lcid, &ptlib);
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| 112 |
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| 113 | if (FAILED(hr)) {
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| 114 |
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| 115 | // attempt to load directly - this will fill the
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| 116 | // registry in if it finds it
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| 117 |
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| 118 | lpfnLoadTypeLib = (LPLOADTYPELIB)GetProcAddress(hInst, szTypeLib);
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| 119 | if (lpfnLoadTypeLib == NULL) {
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| 120 | DWORD dwError = GetLastError();
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| 121 | return AmHresultFromWin32(dwError);
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| 122 | }
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| 123 |
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| 124 | hr = (*lpfnLoadTypeLib)(szControl, &ptlib);
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| 125 | if (FAILED(hr)) {
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| 126 | return hr;
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| 127 | }
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| 128 | }
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| 129 |
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| 130 | hr = ptlib->GetTypeInfoOfGuid(
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| 131 | riid,
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| 132 | &m_pti);
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| 133 |
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| 134 | ptlib->Release();
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| 135 |
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| 136 | if (FAILED(hr)) {
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| 137 | return hr;
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| 138 | }
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| 139 | }
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| 140 |
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| 141 | *pptinfo = m_pti;
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| 142 | m_pti->AddRef();
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| 143 | return S_OK;
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| 144 | }
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| 145 |
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| 146 |
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| 147 | STDMETHODIMP
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| 148 | CBaseDispatch::GetIDsOfNames(
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| 149 | REFIID riid,
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| 150 | __in_ecount(cNames) LPOLESTR * rgszNames,
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| 151 | UINT cNames,
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| 152 | LCID lcid,
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| 153 | __out_ecount(cNames) DISPID * rgdispid)
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| 154 | {
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| 155 | // although the IDispatch riid is dead, we use this to pass from
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| 156 | // the interface implementation class to us the iid we are talking about.
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| 157 |
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| 158 | ITypeInfo * pti;
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| 159 | HRESULT hr = GetTypeInfo(riid, 0, lcid, &pti);
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| 160 |
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| 161 | if (SUCCEEDED(hr)) {
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| 162 | hr = pti->GetIDsOfNames(rgszNames, cNames, rgdispid);
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| 163 |
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| 164 | pti->Release();
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| 165 | }
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| 166 | return hr;
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| 167 | }
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| 168 |
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| 169 |
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| 170 | // --- CMediaControl implementation ---------
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| 171 |
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| 172 | CMediaControl::CMediaControl(const TCHAR * name,LPUNKNOWN pUnk) :
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| 173 | CUnknown(name, pUnk)
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| 174 | {
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| 175 | }
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| 176 |
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| 177 | // expose our interfaces IMediaControl and IUnknown
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| 178 |
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| 179 | STDMETHODIMP
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| 180 | CMediaControl::NonDelegatingQueryInterface(REFIID riid, __deref_out void **ppv)
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| 181 | {
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| 182 | ValidateReadWritePtr(ppv,sizeof(PVOID));
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| 183 | if (riid == IID_IMediaControl) {
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| 184 | return GetInterface( (IMediaControl *) this, ppv);
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| 185 | } else {
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| 186 | return CUnknown::NonDelegatingQueryInterface(riid, ppv);
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| 187 | }
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| 188 | }
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| 189 |
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| 190 |
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| 191 | // return 1 if we support GetTypeInfo
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| 192 |
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| 193 | STDMETHODIMP
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| 194 | CMediaControl::GetTypeInfoCount(__out UINT * pctinfo)
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| 195 | {
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| 196 | return m_basedisp.GetTypeInfoCount(pctinfo);
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| 197 | }
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| 198 |
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| 199 |
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| 200 | // attempt to find our type library
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| 201 |
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| 202 | STDMETHODIMP
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| 203 | CMediaControl::GetTypeInfo(
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| 204 | UINT itinfo,
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| 205 | LCID lcid,
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| 206 | __deref_out ITypeInfo ** pptinfo)
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| 207 | {
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| 208 | return m_basedisp.GetTypeInfo(
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| 209 | IID_IMediaControl,
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| 210 | itinfo,
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| 211 | lcid,
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| 212 | pptinfo);
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| 213 | }
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| 214 |
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| 215 |
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| 216 | STDMETHODIMP
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| 217 | CMediaControl::GetIDsOfNames(
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| 218 | REFIID riid,
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| 219 | __in_ecount(cNames) LPOLESTR * rgszNames,
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| 220 | UINT cNames,
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| 221 | LCID lcid,
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| 222 | __out_ecount(cNames) DISPID * rgdispid)
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| 223 | {
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| 224 | return m_basedisp.GetIDsOfNames(
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| 225 | IID_IMediaControl,
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| 226 | rgszNames,
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| 227 | cNames,
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| 228 | lcid,
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| 229 | rgdispid);
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| 230 | }
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| 231 |
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| 232 |
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| 233 | STDMETHODIMP
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| 234 | CMediaControl::Invoke(
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| 235 | DISPID dispidMember,
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| 236 | REFIID riid,
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| 237 | LCID lcid,
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| 238 | WORD wFlags,
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| 239 | __in DISPPARAMS * pdispparams,
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| 240 | __out_opt VARIANT * pvarResult,
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| 241 | __out_opt EXCEPINFO * pexcepinfo,
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| 242 | __out_opt UINT * puArgErr)
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| 243 | {
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| 244 | // this parameter is a dead leftover from an earlier interface
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| 245 | if (IID_NULL != riid) {
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| 246 | return DISP_E_UNKNOWNINTERFACE;
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| 247 | }
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| 248 |
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| 249 | ITypeInfo * pti;
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| 250 | HRESULT hr = GetTypeInfo(0, lcid, &pti);
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| 251 |
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| 252 | if (FAILED(hr)) {
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| 253 | return hr;
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| 254 | }
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| 255 |
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| 256 | hr = pti->Invoke(
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| 257 | (IMediaControl *)this,
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| 258 | dispidMember,
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| 259 | wFlags,
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| 260 | pdispparams,
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| 261 | pvarResult,
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| 262 | pexcepinfo,
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| 263 | puArgErr);
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| 264 |
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| 265 | pti->Release();
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| 266 | return hr;
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| 267 | }
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| 268 |
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| 269 |
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| 270 | // --- CMediaEvent implementation ----------
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| 271 |
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| 272 |
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| 273 | CMediaEvent::CMediaEvent(__in_opt LPCTSTR name,__in_opt LPUNKNOWN pUnk) :
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| 274 | CUnknown(name, pUnk)
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| 275 | {
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| 276 | }
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| 277 |
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| 278 |
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| 279 | // expose our interfaces IMediaEvent and IUnknown
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| 280 |
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| 281 | STDMETHODIMP
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| 282 | CMediaEvent::NonDelegatingQueryInterface(REFIID riid, __deref_out void **ppv)
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| 283 | {
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| 284 | ValidateReadWritePtr(ppv,sizeof(PVOID));
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| 285 | if (riid == IID_IMediaEvent || riid == IID_IMediaEventEx) {
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| 286 | return GetInterface( (IMediaEventEx *) this, ppv);
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| 287 | } else {
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| 288 | return CUnknown::NonDelegatingQueryInterface(riid, ppv);
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| 289 | }
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| 290 | }
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| 291 |
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| 292 |
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| 293 | // return 1 if we support GetTypeInfo
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| 294 |
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| 295 | STDMETHODIMP
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| 296 | CMediaEvent::GetTypeInfoCount(__out UINT * pctinfo)
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| 297 | {
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| 298 | return m_basedisp.GetTypeInfoCount(pctinfo);
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| 299 | }
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| 300 |
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| 301 |
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| 302 | // attempt to find our type library
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| 303 |
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| 304 | STDMETHODIMP
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| 305 | CMediaEvent::GetTypeInfo(
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| 306 | UINT itinfo,
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| 307 | LCID lcid,
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| 308 | __deref_out ITypeInfo ** pptinfo)
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| 309 | {
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| 310 | return m_basedisp.GetTypeInfo(
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| 311 | IID_IMediaEvent,
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| 312 | itinfo,
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| 313 | lcid,
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| 314 | pptinfo);
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| 315 | }
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| 316 |
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| 317 |
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| 318 | STDMETHODIMP
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| 319 | CMediaEvent::GetIDsOfNames(
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| 320 | REFIID riid,
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| 321 | __in_ecount(cNames) LPOLESTR * rgszNames,
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| 322 | UINT cNames,
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| 323 | LCID lcid,
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| 324 | __out_ecount(cNames) DISPID * rgdispid)
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| 325 | {
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| 326 | return m_basedisp.GetIDsOfNames(
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| 327 | IID_IMediaEvent,
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| 328 | rgszNames,
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| 329 | cNames,
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| 330 | lcid,
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| 331 | rgdispid);
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| 332 | }
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| 333 |
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| 334 |
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| 335 | STDMETHODIMP
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| 336 | CMediaEvent::Invoke(
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| 337 | DISPID dispidMember,
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| 338 | REFIID riid,
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| 339 | LCID lcid,
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| 340 | WORD wFlags,
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| 341 | __in DISPPARAMS * pdispparams,
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| 342 | __out_opt VARIANT * pvarResult,
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| 343 | __out_opt EXCEPINFO * pexcepinfo,
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| 344 | __out_opt UINT * puArgErr)
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| 345 | {
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| 346 | // this parameter is a dead leftover from an earlier interface
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| 347 | if (IID_NULL != riid) {
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| 348 | return DISP_E_UNKNOWNINTERFACE;
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| 349 | }
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| 350 |
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| 351 | ITypeInfo * pti;
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| 352 | HRESULT hr = GetTypeInfo(0, lcid, &pti);
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| 353 |
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| 354 | if (FAILED(hr)) {
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| 355 | return hr;
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| 356 | }
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| 357 |
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| 358 | hr = pti->Invoke(
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| 359 | (IMediaEvent *)this,
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| 360 | dispidMember,
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| 361 | wFlags,
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| 362 | pdispparams,
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| 363 | pvarResult,
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| 364 | pexcepinfo,
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| 365 | puArgErr);
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| 366 |
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| 367 | pti->Release();
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| 368 | return hr;
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| 369 | }
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| 370 |
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| 371 |
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| 372 | // --- CMediaPosition implementation ----------
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| 373 |
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| 374 |
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| 375 | CMediaPosition::CMediaPosition(__in_opt LPCTSTR name,__in_opt LPUNKNOWN pUnk) :
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| 376 | CUnknown(name, pUnk)
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| 377 | {
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| 378 | }
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| 379 |
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| 380 | CMediaPosition::CMediaPosition(__in_opt LPCTSTR name,
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| 381 | __in_opt LPUNKNOWN pUnk,
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| 382 | __inout HRESULT * phr) :
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| 383 | CUnknown(name, pUnk)
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| 384 | {
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| 385 | UNREFERENCED_PARAMETER(phr);
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| 386 | }
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| 387 |
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| 388 |
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| 389 | // expose our interfaces IMediaPosition and IUnknown
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| 390 |
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| 391 | STDMETHODIMP
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| 392 | CMediaPosition::NonDelegatingQueryInterface(REFIID riid, __deref_out void **ppv)
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| 393 | {
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| 394 | ValidateReadWritePtr(ppv,sizeof(PVOID));
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| 395 | if (riid == IID_IMediaPosition) {
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| 396 | return GetInterface( (IMediaPosition *) this, ppv);
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| 397 | } else {
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| 398 | return CUnknown::NonDelegatingQueryInterface(riid, ppv);
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| 399 | }
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| 400 | }
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| 401 |
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| 402 |
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| 403 | // return 1 if we support GetTypeInfo
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| 404 |
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| 405 | STDMETHODIMP
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| 406 | CMediaPosition::GetTypeInfoCount(__out UINT * pctinfo)
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| 407 | {
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| 408 | return m_basedisp.GetTypeInfoCount(pctinfo);
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| 409 | }
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| 410 |
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| 411 |
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| 412 | // attempt to find our type library
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| 413 |
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| 414 | STDMETHODIMP
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| 415 | CMediaPosition::GetTypeInfo(
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| 416 | UINT itinfo,
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| 417 | LCID lcid,
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| 418 | __deref_out ITypeInfo ** pptinfo)
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| 419 | {
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| 420 | return m_basedisp.GetTypeInfo(
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| 421 | IID_IMediaPosition,
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| 422 | itinfo,
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| 423 | lcid,
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| 424 | pptinfo);
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| 425 | }
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| 426 |
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| 427 |
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| 428 | STDMETHODIMP
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| 429 | CMediaPosition::GetIDsOfNames(
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| 430 | REFIID riid,
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| 431 | __in_ecount(cNames) LPOLESTR * rgszNames,
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| 432 | UINT cNames,
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| 433 | LCID lcid,
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| 434 | __out_ecount(cNames) DISPID * rgdispid)
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| 435 | {
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| 436 | return m_basedisp.GetIDsOfNames(
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| 437 | IID_IMediaPosition,
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| 438 | rgszNames,
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| 439 | cNames,
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| 440 | lcid,
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| 441 | rgdispid);
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| 442 | }
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| 443 |
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| 444 |
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| 445 | STDMETHODIMP
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| 446 | CMediaPosition::Invoke(
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| 447 | DISPID dispidMember,
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| 448 | REFIID riid,
|
| 449 | LCID lcid,
|
| 450 | WORD wFlags,
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| 451 | __in DISPPARAMS * pdispparams,
|
| 452 | __out_opt VARIANT * pvarResult,
|
| 453 | __out_opt EXCEPINFO * pexcepinfo,
|
| 454 | __out_opt UINT * puArgErr)
|
| 455 | {
|
| 456 | // this parameter is a dead leftover from an earlier interface
|
| 457 | if (IID_NULL != riid) {
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| 458 | return DISP_E_UNKNOWNINTERFACE;
|
| 459 | }
|
| 460 |
|
| 461 | ITypeInfo * pti;
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| 462 | HRESULT hr = GetTypeInfo(0, lcid, &pti);
|
| 463 |
|
| 464 | if (FAILED(hr)) {
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| 465 | return hr;
|
| 466 | }
|
| 467 |
|
| 468 | hr = pti->Invoke(
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| 469 | (IMediaPosition *)this,
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| 470 | dispidMember,
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| 471 | wFlags,
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| 472 | pdispparams,
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| 473 | pvarResult,
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| 474 | pexcepinfo,
|
| 475 | puArgErr);
|
| 476 |
|
| 477 | pti->Release();
|
| 478 | return hr;
|
| 479 | }
|
| 480 |
|
| 481 |
|
| 482 | // --- IMediaPosition and IMediaSeeking pass through class ----------
|
| 483 |
|
| 484 |
|
| 485 | CPosPassThru::CPosPassThru(__in_opt LPCTSTR pName,
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| 486 | __in_opt LPUNKNOWN pUnk,
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| 487 | __inout HRESULT *phr,
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| 488 | IPin *pPin) :
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| 489 | CMediaPosition(pName,pUnk),
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| 490 | m_pPin(pPin)
|
| 491 | {
|
| 492 | if (pPin == NULL) {
|
| 493 | *phr = E_POINTER;
|
| 494 | return;
|
| 495 | }
|
| 496 | }
|
| 497 |
|
| 498 |
|
| 499 | // Expose our IMediaSeeking and IMediaPosition interfaces
|
| 500 |
|
| 501 | STDMETHODIMP
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| 502 | CPosPassThru::NonDelegatingQueryInterface(REFIID riid,__deref_out void **ppv)
|
| 503 | {
|
| 504 | CheckPointer(ppv,E_POINTER);
|
| 505 | *ppv = NULL;
|
| 506 |
|
| 507 | if (riid == IID_IMediaSeeking) {
|
| 508 | return GetInterface( static_cast<IMediaSeeking *>(this), ppv);
|
| 509 | }
|
| 510 | return CMediaPosition::NonDelegatingQueryInterface(riid,ppv);
|
| 511 | }
|
| 512 |
|
| 513 |
|
| 514 | // Return the IMediaPosition interface from our peer
|
| 515 |
|
| 516 | HRESULT
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| 517 | CPosPassThru::GetPeer(IMediaPosition ** ppMP)
|
| 518 | {
|
| 519 | *ppMP = NULL;
|
| 520 |
|
| 521 | IPin *pConnected;
|
| 522 | HRESULT hr = m_pPin->ConnectedTo(&pConnected);
|
| 523 | if (FAILED(hr)) {
|
| 524 | return E_NOTIMPL;
|
| 525 | }
|
| 526 | IMediaPosition * pMP;
|
| 527 | hr = pConnected->QueryInterface(IID_IMediaPosition, (void **) &pMP);
|
| 528 | pConnected->Release();
|
| 529 | if (FAILED(hr)) {
|
| 530 | return E_NOTIMPL;
|
| 531 | }
|
| 532 |
|
| 533 | *ppMP = pMP;
|
| 534 | return S_OK;
|
| 535 | }
|
| 536 |
|
| 537 |
|
| 538 | // Return the IMediaSeeking interface from our peer
|
| 539 |
|
| 540 | HRESULT
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| 541 | CPosPassThru::GetPeerSeeking(__deref_out IMediaSeeking ** ppMS)
|
| 542 | {
|
| 543 | *ppMS = NULL;
|
| 544 |
|
| 545 | IPin *pConnected;
|
| 546 | HRESULT hr = m_pPin->ConnectedTo(&pConnected);
|
| 547 | if (FAILED(hr)) {
|
| 548 | return E_NOTIMPL;
|
| 549 | }
|
| 550 | IMediaSeeking * pMS;
|
| 551 | hr = pConnected->QueryInterface(IID_IMediaSeeking, (void **) &pMS);
|
| 552 | pConnected->Release();
|
| 553 | if (FAILED(hr)) {
|
| 554 | return E_NOTIMPL;
|
| 555 | }
|
| 556 |
|
| 557 | *ppMS = pMS;
|
| 558 | return S_OK;
|
| 559 | }
|
| 560 |
|
| 561 |
|
| 562 | // --- IMediaSeeking methods ----------
|
| 563 |
|
| 564 |
|
| 565 | STDMETHODIMP
|
| 566 | CPosPassThru::GetCapabilities(__out DWORD * pCaps)
|
| 567 | {
|
| 568 | IMediaSeeking* pMS;
|
| 569 | HRESULT hr = GetPeerSeeking(&pMS);
|
| 570 | if (FAILED(hr)) {
|
| 571 | return hr;
|
| 572 | }
|
| 573 |
|
| 574 | hr = pMS->GetCapabilities(pCaps);
|
| 575 | pMS->Release();
|
| 576 | return hr;
|
| 577 | }
|
| 578 |
|
| 579 | STDMETHODIMP
|
| 580 | CPosPassThru::CheckCapabilities(__inout DWORD * pCaps)
|
| 581 | {
|
| 582 | IMediaSeeking* pMS;
|
| 583 | HRESULT hr = GetPeerSeeking(&pMS);
|
| 584 | if (FAILED(hr)) {
|
| 585 | return hr;
|
| 586 | }
|
| 587 |
|
| 588 | hr = pMS->CheckCapabilities(pCaps);
|
| 589 | pMS->Release();
|
| 590 | return hr;
|
| 591 | }
|
| 592 |
|
| 593 | STDMETHODIMP
|
| 594 | CPosPassThru::IsFormatSupported(const GUID * pFormat)
|
| 595 | {
|
| 596 | IMediaSeeking* pMS;
|
| 597 | HRESULT hr = GetPeerSeeking(&pMS);
|
| 598 | if (FAILED(hr)) {
|
| 599 | return hr;
|
| 600 | }
|
| 601 |
|
| 602 | hr = pMS->IsFormatSupported(pFormat);
|
| 603 | pMS->Release();
|
| 604 | return hr;
|
| 605 | }
|
| 606 |
|
| 607 |
|
| 608 | STDMETHODIMP
|
| 609 | CPosPassThru::QueryPreferredFormat(__out GUID *pFormat)
|
| 610 | {
|
| 611 | IMediaSeeking* pMS;
|
| 612 | HRESULT hr = GetPeerSeeking(&pMS);
|
| 613 | if (FAILED(hr)) {
|
| 614 | return hr;
|
| 615 | }
|
| 616 |
|
| 617 | hr = pMS->QueryPreferredFormat(pFormat);
|
| 618 | pMS->Release();
|
| 619 | return hr;
|
| 620 | }
|
| 621 |
|
| 622 |
|
| 623 | STDMETHODIMP
|
| 624 | CPosPassThru::SetTimeFormat(const GUID * pFormat)
|
| 625 | {
|
| 626 | IMediaSeeking* pMS;
|
| 627 | HRESULT hr = GetPeerSeeking(&pMS);
|
| 628 | if (FAILED(hr)) {
|
| 629 | return hr;
|
| 630 | }
|
| 631 |
|
| 632 | hr = pMS->SetTimeFormat(pFormat);
|
| 633 | pMS->Release();
|
| 634 | return hr;
|
| 635 | }
|
| 636 |
|
| 637 |
|
| 638 | STDMETHODIMP
|
| 639 | CPosPassThru::GetTimeFormat(__out GUID *pFormat)
|
| 640 | {
|
| 641 | IMediaSeeking* pMS;
|
| 642 | HRESULT hr = GetPeerSeeking(&pMS);
|
| 643 | if (FAILED(hr)) {
|
| 644 | return hr;
|
| 645 | }
|
| 646 |
|
| 647 | hr = pMS->GetTimeFormat(pFormat);
|
| 648 | pMS->Release();
|
| 649 | return hr;
|
| 650 | }
|
| 651 |
|
| 652 |
|
| 653 | STDMETHODIMP
|
| 654 | CPosPassThru::IsUsingTimeFormat(const GUID * pFormat)
|
| 655 | {
|
| 656 | IMediaSeeking* pMS;
|
| 657 | HRESULT hr = GetPeerSeeking(&pMS);
|
| 658 | if (FAILED(hr)) {
|
| 659 | return hr;
|
| 660 | }
|
| 661 |
|
| 662 | hr = pMS->IsUsingTimeFormat(pFormat);
|
| 663 | pMS->Release();
|
| 664 | return hr;
|
| 665 | }
|
| 666 |
|
| 667 |
|
| 668 | STDMETHODIMP
|
| 669 | CPosPassThru::ConvertTimeFormat(__out LONGLONG * pTarget,
|
| 670 | __in_opt const GUID * pTargetFormat,
|
| 671 | LONGLONG Source,
|
| 672 | __in_opt const GUID * pSourceFormat )
|
| 673 | {
|
| 674 | IMediaSeeking* pMS;
|
| 675 | HRESULT hr = GetPeerSeeking(&pMS);
|
| 676 | if (FAILED(hr)) {
|
| 677 | return hr;
|
| 678 | }
|
| 679 |
|
| 680 | hr = pMS->ConvertTimeFormat(pTarget, pTargetFormat, Source, pSourceFormat );
|
| 681 | pMS->Release();
|
| 682 | return hr;
|
| 683 | }
|
| 684 |
|
| 685 |
|
| 686 | STDMETHODIMP
|
| 687 | CPosPassThru::SetPositions( __inout_opt LONGLONG * pCurrent,
|
| 688 | DWORD CurrentFlags,
|
| 689 | __inout_opt LONGLONG * pStop,
|
| 690 | DWORD StopFlags )
|
| 691 | {
|
| 692 | IMediaSeeking* pMS;
|
| 693 | HRESULT hr = GetPeerSeeking(&pMS);
|
| 694 | if (FAILED(hr)) {
|
| 695 | return hr;
|
| 696 | }
|
| 697 |
|
| 698 | hr = pMS->SetPositions(pCurrent, CurrentFlags, pStop, StopFlags );
|
| 699 | pMS->Release();
|
| 700 | return hr;
|
| 701 | }
|
| 702 |
|
| 703 | STDMETHODIMP
|
| 704 | CPosPassThru::GetPositions(__out_opt LONGLONG *pCurrent, __out_opt LONGLONG * pStop)
|
| 705 | {
|
| 706 | IMediaSeeking* pMS;
|
| 707 | HRESULT hr = GetPeerSeeking(&pMS);
|
| 708 | if (FAILED(hr)) {
|
| 709 | return hr;
|
| 710 | }
|
| 711 |
|
| 712 | hr = pMS->GetPositions(pCurrent,pStop);
|
| 713 | pMS->Release();
|
| 714 | return hr;
|
| 715 | }
|
| 716 |
|
| 717 | HRESULT
|
| 718 | CPosPassThru::GetSeekingLongLong
|
| 719 | ( HRESULT (__stdcall IMediaSeeking::*pMethod)( __out LONGLONG * )
|
| 720 | , LONGLONG * pll
|
| 721 | )
|
| 722 | {
|
| 723 | IMediaSeeking* pMS;
|
| 724 | HRESULT hr = GetPeerSeeking(&pMS);
|
| 725 | if (SUCCEEDED(hr))
|
| 726 | {
|
| 727 | hr = (pMS->*pMethod)(pll);
|
| 728 | pMS->Release();
|
| 729 | }
|
| 730 | return hr;
|
| 731 | }
|
| 732 |
|
| 733 | // If we don't have a current position then ask upstream
|
| 734 |
|
| 735 | STDMETHODIMP
|
| 736 | CPosPassThru::GetCurrentPosition(__out LONGLONG *pCurrent)
|
| 737 | {
|
| 738 | // Can we report the current position
|
| 739 | HRESULT hr = GetMediaTime(pCurrent,NULL);
|
| 740 | if (SUCCEEDED(hr)) hr = NOERROR;
|
| 741 | else hr = GetSeekingLongLong( &IMediaSeeking::GetCurrentPosition, pCurrent );
|
| 742 | return hr;
|
| 743 | }
|
| 744 |
|
| 745 |
|
| 746 | STDMETHODIMP
|
| 747 | CPosPassThru::GetStopPosition(__out LONGLONG *pStop)
|
| 748 | {
|
| 749 | return GetSeekingLongLong( &IMediaSeeking::GetStopPosition, pStop );;
|
| 750 | }
|
| 751 |
|
| 752 | STDMETHODIMP
|
| 753 | CPosPassThru::GetDuration(__out LONGLONG *pDuration)
|
| 754 | {
|
| 755 | return GetSeekingLongLong( &IMediaSeeking::GetDuration, pDuration );;
|
| 756 | }
|
| 757 |
|
| 758 |
|
| 759 | STDMETHODIMP
|
| 760 | CPosPassThru::GetPreroll(__out LONGLONG *pllPreroll)
|
| 761 | {
|
| 762 | return GetSeekingLongLong( &IMediaSeeking::GetPreroll, pllPreroll );;
|
| 763 | }
|
| 764 |
|
| 765 |
|
| 766 | STDMETHODIMP
|
| 767 | CPosPassThru::GetAvailable( __out_opt LONGLONG *pEarliest, __out_opt LONGLONG *pLatest )
|
| 768 | {
|
| 769 | IMediaSeeking* pMS;
|
| 770 | HRESULT hr = GetPeerSeeking(&pMS);
|
| 771 | if (FAILED(hr)) {
|
| 772 | return hr;
|
| 773 | }
|
| 774 |
|
| 775 | hr = pMS->GetAvailable( pEarliest, pLatest );
|
| 776 | pMS->Release();
|
| 777 | return hr;
|
| 778 | }
|
| 779 |
|
| 780 |
|
| 781 | STDMETHODIMP
|
| 782 | CPosPassThru::GetRate(__out double * pdRate)
|
| 783 | {
|
| 784 | IMediaSeeking* pMS;
|
| 785 | HRESULT hr = GetPeerSeeking(&pMS);
|
| 786 | if (FAILED(hr)) {
|
| 787 | return hr;
|
| 788 | }
|
| 789 | hr = pMS->GetRate(pdRate);
|
| 790 | pMS->Release();
|
| 791 | return hr;
|
| 792 | }
|
| 793 |
|
| 794 |
|
| 795 | STDMETHODIMP
|
| 796 | CPosPassThru::SetRate(double dRate)
|
| 797 | {
|
| 798 | if (0.0 == dRate) {
|
| 799 | return E_INVALIDARG;
|
| 800 | }
|
| 801 |
|
| 802 | IMediaSeeking* pMS;
|
| 803 | HRESULT hr = GetPeerSeeking(&pMS);
|
| 804 | if (FAILED(hr)) {
|
| 805 | return hr;
|
| 806 | }
|
| 807 | hr = pMS->SetRate(dRate);
|
| 808 | pMS->Release();
|
| 809 | return hr;
|
| 810 | }
|
| 811 |
|
| 812 |
|
| 813 |
|
| 814 |
|
| 815 | // --- IMediaPosition methods ----------
|
| 816 |
|
| 817 |
|
| 818 | STDMETHODIMP
|
| 819 | CPosPassThru::get_Duration(__out REFTIME * plength)
|
| 820 | {
|
| 821 | IMediaPosition* pMP;
|
| 822 | HRESULT hr = GetPeer(&pMP);
|
| 823 | if (FAILED(hr)) {
|
| 824 | return hr;
|
| 825 | }
|
| 826 |
|
| 827 | hr = pMP->get_Duration(plength);
|
| 828 | pMP->Release();
|
| 829 | return hr;
|
| 830 | }
|
| 831 |
|
| 832 |
|
| 833 | STDMETHODIMP
|
| 834 | CPosPassThru::get_CurrentPosition(__out REFTIME * pllTime)
|
| 835 | {
|
| 836 | IMediaPosition* pMP;
|
| 837 | HRESULT hr = GetPeer(&pMP);
|
| 838 | if (FAILED(hr)) {
|
| 839 | return hr;
|
| 840 | }
|
| 841 | hr = pMP->get_CurrentPosition(pllTime);
|
| 842 | pMP->Release();
|
| 843 | return hr;
|
| 844 | }
|
| 845 |
|
| 846 |
|
| 847 | STDMETHODIMP
|
| 848 | CPosPassThru::put_CurrentPosition(REFTIME llTime)
|
| 849 | {
|
| 850 | IMediaPosition* pMP;
|
| 851 | HRESULT hr = GetPeer(&pMP);
|
| 852 | if (FAILED(hr)) {
|
| 853 | return hr;
|
| 854 | }
|
| 855 | hr = pMP->put_CurrentPosition(llTime);
|
| 856 | pMP->Release();
|
| 857 | return hr;
|
| 858 | }
|
| 859 |
|
| 860 |
|
| 861 | STDMETHODIMP
|
| 862 | CPosPassThru::get_StopTime(__out REFTIME * pllTime)
|
| 863 | {
|
| 864 | IMediaPosition* pMP;
|
| 865 | HRESULT hr = GetPeer(&pMP);
|
| 866 | if (FAILED(hr)) {
|
| 867 | return hr;
|
| 868 | }
|
| 869 | hr = pMP->get_StopTime(pllTime);
|
| 870 | pMP->Release();
|
| 871 | return hr;
|
| 872 | }
|
| 873 |
|
| 874 |
|
| 875 | STDMETHODIMP
|
| 876 | CPosPassThru::put_StopTime(REFTIME llTime)
|
| 877 | {
|
| 878 | IMediaPosition* pMP;
|
| 879 | HRESULT hr = GetPeer(&pMP);
|
| 880 | if (FAILED(hr)) {
|
| 881 | return hr;
|
| 882 | }
|
| 883 | hr = pMP->put_StopTime(llTime);
|
| 884 | pMP->Release();
|
| 885 | return hr;
|
| 886 | }
|
| 887 |
|
| 888 |
|
| 889 | STDMETHODIMP
|
| 890 | CPosPassThru::get_PrerollTime(__out REFTIME * pllTime)
|
| 891 | {
|
| 892 | IMediaPosition* pMP;
|
| 893 | HRESULT hr = GetPeer(&pMP);
|
| 894 | if (FAILED(hr)) {
|
| 895 | return hr;
|
| 896 | }
|
| 897 | hr = pMP->get_PrerollTime(pllTime);
|
| 898 | pMP->Release();
|
| 899 | return hr;
|
| 900 | }
|
| 901 |
|
| 902 |
|
| 903 | STDMETHODIMP
|
| 904 | CPosPassThru::put_PrerollTime(REFTIME llTime)
|
| 905 | {
|
| 906 | IMediaPosition* pMP;
|
| 907 | HRESULT hr = GetPeer(&pMP);
|
| 908 | if (FAILED(hr)) {
|
| 909 | return hr;
|
| 910 | }
|
| 911 | hr = pMP->put_PrerollTime(llTime);
|
| 912 | pMP->Release();
|
| 913 | return hr;
|
| 914 | }
|
| 915 |
|
| 916 |
|
| 917 | STDMETHODIMP
|
| 918 | CPosPassThru::get_Rate(__out double * pdRate)
|
| 919 | {
|
| 920 | IMediaPosition* pMP;
|
| 921 | HRESULT hr = GetPeer(&pMP);
|
| 922 | if (FAILED(hr)) {
|
| 923 | return hr;
|
| 924 | }
|
| 925 | hr = pMP->get_Rate(pdRate);
|
| 926 | pMP->Release();
|
| 927 | return hr;
|
| 928 | }
|
| 929 |
|
| 930 |
|
| 931 | STDMETHODIMP
|
| 932 | CPosPassThru::put_Rate(double dRate)
|
| 933 | {
|
| 934 | if (0.0 == dRate) {
|
| 935 | return E_INVALIDARG;
|
| 936 | }
|
| 937 |
|
| 938 | IMediaPosition* pMP;
|
| 939 | HRESULT hr = GetPeer(&pMP);
|
| 940 | if (FAILED(hr)) {
|
| 941 | return hr;
|
| 942 | }
|
| 943 | hr = pMP->put_Rate(dRate);
|
| 944 | pMP->Release();
|
| 945 | return hr;
|
| 946 | }
|
| 947 |
|
| 948 |
|
| 949 | STDMETHODIMP
|
| 950 | CPosPassThru::CanSeekForward(__out LONG *pCanSeekForward)
|
| 951 | {
|
| 952 | IMediaPosition* pMP;
|
| 953 | HRESULT hr = GetPeer(&pMP);
|
| 954 | if (FAILED(hr)) {
|
| 955 | return hr;
|
| 956 | }
|
| 957 | hr = pMP->CanSeekForward(pCanSeekForward);
|
| 958 | pMP->Release();
|
| 959 | return hr;
|
| 960 | }
|
| 961 |
|
| 962 |
|
| 963 | STDMETHODIMP
|
| 964 | CPosPassThru::CanSeekBackward(__out LONG *pCanSeekBackward)
|
| 965 | {
|
| 966 | IMediaPosition* pMP;
|
| 967 | HRESULT hr = GetPeer(&pMP);
|
| 968 | if (FAILED(hr)) {
|
| 969 | return hr;
|
| 970 | }
|
| 971 | hr = pMP->CanSeekBackward(pCanSeekBackward);
|
| 972 | pMP->Release();
|
| 973 | return hr;
|
| 974 | }
|
| 975 |
|
| 976 |
|
| 977 | // --- Implements the CRendererPosPassThru class ----------
|
| 978 |
|
| 979 |
|
| 980 | // Media times (eg current frame, field, sample etc) are passed through the
|
| 981 | // filtergraph in media samples. When a renderer gets a sample with media
|
| 982 | // times in it, it will call one of the RegisterMediaTime methods we expose
|
| 983 | // (one takes an IMediaSample, the other takes the media times direct). We
|
| 984 | // store the media times internally and return them in GetCurrentPosition.
|
| 985 |
|
| 986 | CRendererPosPassThru::CRendererPosPassThru(__in_opt LPCTSTR pName,
|
| 987 | __in_opt LPUNKNOWN pUnk,
|
| 988 | __inout HRESULT *phr,
|
| 989 | IPin *pPin) :
|
| 990 | CPosPassThru(pName,pUnk,phr,pPin),
|
| 991 | m_StartMedia(0),
|
| 992 | m_EndMedia(0),
|
| 993 | m_bReset(TRUE)
|
| 994 | {
|
| 995 | }
|
| 996 |
|
| 997 |
|
| 998 | // Sets the media times the object should report
|
| 999 |
|
| 1000 | HRESULT
|
| 1001 | CRendererPosPassThru::RegisterMediaTime(IMediaSample *pMediaSample)
|
| 1002 | {
|
| 1003 | ASSERT(pMediaSample);
|
| 1004 | LONGLONG StartMedia;
|
| 1005 | LONGLONG EndMedia;
|
| 1006 |
|
| 1007 | CAutoLock cAutoLock(&m_PositionLock);
|
| 1008 |
|
| 1009 | // Get the media times from the sample
|
| 1010 |
|
| 1011 | HRESULT hr = pMediaSample->GetTime(&StartMedia,&EndMedia);
|
| 1012 | if (FAILED(hr))
|
| 1013 | {
|
| 1014 | ASSERT(hr == VFW_E_SAMPLE_TIME_NOT_SET);
|
| 1015 | return hr;
|
| 1016 | }
|
| 1017 |
|
| 1018 | m_StartMedia = StartMedia;
|
| 1019 | m_EndMedia = EndMedia;
|
| 1020 | m_bReset = FALSE;
|
| 1021 | return NOERROR;
|
| 1022 | }
|
| 1023 |
|
| 1024 |
|
| 1025 | // Sets the media times the object should report
|
| 1026 |
|
| 1027 | HRESULT
|
| 1028 | CRendererPosPassThru::RegisterMediaTime(LONGLONG StartTime,LONGLONG EndTime)
|
| 1029 | {
|
| 1030 | CAutoLock cAutoLock(&m_PositionLock);
|
| 1031 | m_StartMedia = StartTime;
|
| 1032 | m_EndMedia = EndTime;
|
| 1033 | m_bReset = FALSE;
|
| 1034 | return NOERROR;
|
| 1035 | }
|
| 1036 |
|
| 1037 |
|
| 1038 | // Return the current media times registered in the object
|
| 1039 |
|
| 1040 | HRESULT
|
| 1041 | CRendererPosPassThru::GetMediaTime(__out LONGLONG *pStartTime, __out_opt LONGLONG *pEndTime)
|
| 1042 | {
|
| 1043 | ASSERT(pStartTime);
|
| 1044 |
|
| 1045 | CAutoLock cAutoLock(&m_PositionLock);
|
| 1046 | if (m_bReset == TRUE) {
|
| 1047 | return E_FAIL;
|
| 1048 | }
|
| 1049 |
|
| 1050 | // We don't have to return the end time
|
| 1051 |
|
| 1052 | HRESULT hr = ConvertTimeFormat( pStartTime, 0, m_StartMedia, &TIME_FORMAT_MEDIA_TIME );
|
| 1053 | if (pEndTime && SUCCEEDED(hr)) {
|
| 1054 | hr = ConvertTimeFormat( pEndTime, 0, m_EndMedia, &TIME_FORMAT_MEDIA_TIME );
|
| 1055 | }
|
| 1056 | return hr;
|
| 1057 | }
|
| 1058 |
|
| 1059 |
|
| 1060 | // Resets the media times we hold
|
| 1061 |
|
| 1062 | HRESULT
|
| 1063 | CRendererPosPassThru::ResetMediaTime()
|
| 1064 | {
|
| 1065 | CAutoLock cAutoLock(&m_PositionLock);
|
| 1066 | m_StartMedia = 0;
|
| 1067 | m_EndMedia = 0;
|
| 1068 | m_bReset = TRUE;
|
| 1069 | return NOERROR;
|
| 1070 | }
|
| 1071 |
|
| 1072 | // Intended to be called by the owing filter during EOS processing so
|
| 1073 | // that the media times can be adjusted to the stop time. This ensures
|
| 1074 | // that the GetCurrentPosition will actully get to the stop position.
|
| 1075 | HRESULT
|
| 1076 | CRendererPosPassThru::EOS()
|
| 1077 | {
|
| 1078 | HRESULT hr;
|
| 1079 |
|
| 1080 | if ( m_bReset == TRUE ) hr = E_FAIL;
|
| 1081 | else
|
| 1082 | {
|
| 1083 | LONGLONG llStop;
|
| 1084 | if SUCCEEDED(hr=GetStopPosition(&llStop))
|
| 1085 | {
|
| 1086 | CAutoLock cAutoLock(&m_PositionLock);
|
| 1087 | m_StartMedia =
|
| 1088 | m_EndMedia = llStop;
|
| 1089 | }
|
| 1090 | }
|
| 1091 | return hr;
|
| 1092 | }
|
| 1093 |
|
| 1094 | // -- CSourceSeeking implementation ------------
|
| 1095 |
|
| 1096 | CSourceSeeking::CSourceSeeking(
|
| 1097 | __in_opt LPCTSTR pName,
|
| 1098 | __in_opt LPUNKNOWN pUnk,
|
| 1099 | __inout HRESULT* phr,
|
| 1100 | __in CCritSec * pLock) :
|
| 1101 | CUnknown(pName, pUnk),
|
| 1102 | m_pLock(pLock),
|
| 1103 | m_rtStart((long)0)
|
| 1104 | {
|
| 1105 | m_rtStop = _I64_MAX / 2;
|
| 1106 | m_rtDuration = m_rtStop;
|
| 1107 | m_dRateSeeking = 1.0;
|
| 1108 |
|
| 1109 | m_dwSeekingCaps = AM_SEEKING_CanSeekForwards
|
| 1110 | | AM_SEEKING_CanSeekBackwards
|
| 1111 | | AM_SEEKING_CanSeekAbsolute
|
| 1112 | | AM_SEEKING_CanGetStopPos
|
| 1113 | | AM_SEEKING_CanGetDuration;
|
| 1114 | }
|
| 1115 |
|
| 1116 | HRESULT CSourceSeeking::NonDelegatingQueryInterface(REFIID riid, __deref_out void **ppv)
|
| 1117 | {
|
| 1118 | if(riid == IID_IMediaSeeking) {
|
| 1119 | CheckPointer(ppv, E_POINTER);
|
| 1120 | return GetInterface(static_cast<IMediaSeeking *>(this), ppv);
|
| 1121 | }
|
| 1122 | else {
|
| 1123 | return CUnknown::NonDelegatingQueryInterface(riid, ppv);
|
| 1124 | }
|
| 1125 | }
|
| 1126 |
|
| 1127 |
|
| 1128 | HRESULT CSourceSeeking::IsFormatSupported(const GUID * pFormat)
|
| 1129 | {
|
| 1130 | CheckPointer(pFormat, E_POINTER);
|
| 1131 | // only seeking in time (REFERENCE_TIME units) is supported
|
| 1132 | return *pFormat == TIME_FORMAT_MEDIA_TIME ? S_OK : S_FALSE;
|
| 1133 | }
|
| 1134 |
|
| 1135 | HRESULT CSourceSeeking::QueryPreferredFormat(__out GUID *pFormat)
|
| 1136 | {
|
| 1137 | CheckPointer(pFormat, E_POINTER);
|
| 1138 | *pFormat = TIME_FORMAT_MEDIA_TIME;
|
| 1139 | return S_OK;
|
| 1140 | }
|
| 1141 |
|
| 1142 | HRESULT CSourceSeeking::SetTimeFormat(const GUID * pFormat)
|
| 1143 | {
|
| 1144 | CheckPointer(pFormat, E_POINTER);
|
| 1145 |
|
| 1146 | // nothing to set; just check that it's TIME_FORMAT_TIME
|
| 1147 | return *pFormat == TIME_FORMAT_MEDIA_TIME ? S_OK : E_INVALIDARG;
|
| 1148 | }
|
| 1149 |
|
| 1150 | HRESULT CSourceSeeking::IsUsingTimeFormat(const GUID * pFormat)
|
| 1151 | {
|
| 1152 | CheckPointer(pFormat, E_POINTER);
|
| 1153 | return *pFormat == TIME_FORMAT_MEDIA_TIME ? S_OK : S_FALSE;
|
| 1154 | }
|
| 1155 |
|
| 1156 | HRESULT CSourceSeeking::GetTimeFormat(__out GUID *pFormat)
|
| 1157 | {
|
| 1158 | CheckPointer(pFormat, E_POINTER);
|
| 1159 | *pFormat = TIME_FORMAT_MEDIA_TIME;
|
| 1160 | return S_OK;
|
| 1161 | }
|
| 1162 |
|
| 1163 | HRESULT CSourceSeeking::GetDuration(__out LONGLONG *pDuration)
|
| 1164 | {
|
| 1165 | CheckPointer(pDuration, E_POINTER);
|
| 1166 | CAutoLock lock(m_pLock);
|
| 1167 | *pDuration = m_rtDuration;
|
| 1168 | return S_OK;
|
| 1169 | }
|
| 1170 |
|
| 1171 | HRESULT CSourceSeeking::GetStopPosition(__out LONGLONG *pStop)
|
| 1172 | {
|
| 1173 | CheckPointer(pStop, E_POINTER);
|
| 1174 | CAutoLock lock(m_pLock);
|
| 1175 | *pStop = m_rtStop;
|
| 1176 | return S_OK;
|
| 1177 | }
|
| 1178 |
|
| 1179 | HRESULT CSourceSeeking::GetCurrentPosition(__out LONGLONG *pCurrent)
|
| 1180 | {
|
| 1181 | // GetCurrentPosition is typically supported only in renderers and
|
| 1182 | // not in source filters.
|
| 1183 | return E_NOTIMPL;
|
| 1184 | }
|
| 1185 |
|
| 1186 | HRESULT CSourceSeeking::GetCapabilities( __out DWORD * pCapabilities )
|
| 1187 | {
|
| 1188 | CheckPointer(pCapabilities, E_POINTER);
|
| 1189 | *pCapabilities = m_dwSeekingCaps;
|
| 1190 | return S_OK;
|
| 1191 | }
|
| 1192 |
|
| 1193 | HRESULT CSourceSeeking::CheckCapabilities( __inout DWORD * pCapabilities )
|
| 1194 | {
|
| 1195 | CheckPointer(pCapabilities, E_POINTER);
|
| 1196 |
|
| 1197 | // make sure all requested capabilities are in our mask
|
| 1198 | return (~m_dwSeekingCaps & *pCapabilities) ? S_FALSE : S_OK;
|
| 1199 | }
|
| 1200 |
|
| 1201 | HRESULT CSourceSeeking::ConvertTimeFormat( __out LONGLONG * pTarget,
|
| 1202 | __in_opt const GUID * pTargetFormat,
|
| 1203 | LONGLONG Source,
|
| 1204 | __in_opt const GUID * pSourceFormat )
|
| 1205 | {
|
| 1206 | CheckPointer(pTarget, E_POINTER);
|
| 1207 | // format guids can be null to indicate current format
|
| 1208 |
|
| 1209 | // since we only support TIME_FORMAT_MEDIA_TIME, we don't really
|
| 1210 | // offer any conversions.
|
| 1211 | if(pTargetFormat == 0 || *pTargetFormat == TIME_FORMAT_MEDIA_TIME)
|
| 1212 | {
|
| 1213 | if(pSourceFormat == 0 || *pSourceFormat == TIME_FORMAT_MEDIA_TIME)
|
| 1214 | {
|
| 1215 | *pTarget = Source;
|
| 1216 | return S_OK;
|
| 1217 | }
|
| 1218 | }
|
| 1219 |
|
| 1220 | return E_INVALIDARG;
|
| 1221 | }
|
| 1222 |
|
| 1223 |
|
| 1224 | HRESULT CSourceSeeking::SetPositions( __inout_opt LONGLONG * pCurrent,
|
| 1225 | DWORD CurrentFlags,
|
| 1226 | __inout_opt LONGLONG * pStop,
|
| 1227 | DWORD StopFlags )
|
| 1228 | {
|
| 1229 | DWORD StopPosBits = StopFlags & AM_SEEKING_PositioningBitsMask;
|
| 1230 | DWORD StartPosBits = CurrentFlags & AM_SEEKING_PositioningBitsMask;
|
| 1231 |
|
| 1232 | if(StopFlags) {
|
| 1233 | CheckPointer(pStop, E_POINTER);
|
| 1234 |
|
| 1235 | // accept only relative, incremental, or absolute positioning
|
| 1236 | if(StopPosBits != StopFlags) {
|
| 1237 | return E_INVALIDARG;
|
| 1238 | }
|
| 1239 | }
|
| 1240 |
|
| 1241 | if(CurrentFlags) {
|
| 1242 | CheckPointer(pCurrent, E_POINTER);
|
| 1243 | if(StartPosBits != AM_SEEKING_AbsolutePositioning &&
|
| 1244 | StartPosBits != AM_SEEKING_RelativePositioning) {
|
| 1245 | return E_INVALIDARG;
|
| 1246 | }
|
| 1247 | }
|
| 1248 |
|
| 1249 |
|
| 1250 | // scope for autolock
|
| 1251 | {
|
| 1252 | CAutoLock lock(m_pLock);
|
| 1253 |
|
| 1254 | // set start position
|
| 1255 | if(StartPosBits == AM_SEEKING_AbsolutePositioning)
|
| 1256 | {
|
| 1257 | m_rtStart = *pCurrent;
|
| 1258 | }
|
| 1259 | else if(StartPosBits == AM_SEEKING_RelativePositioning)
|
| 1260 | {
|
| 1261 | m_rtStart += *pCurrent;
|
| 1262 | }
|
| 1263 |
|
| 1264 | // set stop position
|
| 1265 | if(StopPosBits == AM_SEEKING_AbsolutePositioning)
|
| 1266 | {
|
| 1267 | m_rtStop = *pStop;
|
| 1268 | }
|
| 1269 | else if(StopPosBits == AM_SEEKING_IncrementalPositioning)
|
| 1270 | {
|
| 1271 | m_rtStop = m_rtStart + *pStop;
|
| 1272 | }
|
| 1273 | else if(StopPosBits == AM_SEEKING_RelativePositioning)
|
| 1274 | {
|
| 1275 | m_rtStop = m_rtStop + *pStop;
|
| 1276 | }
|
| 1277 | }
|
| 1278 |
|
| 1279 |
|
| 1280 | HRESULT hr = S_OK;
|
| 1281 | if(SUCCEEDED(hr) && StopPosBits) {
|
| 1282 | hr = ChangeStop();
|
| 1283 | }
|
| 1284 | if(StartPosBits) {
|
| 1285 | hr = ChangeStart();
|
| 1286 | }
|
| 1287 |
|
| 1288 | return hr;
|
| 1289 | }
|
| 1290 |
|
| 1291 |
|
| 1292 | HRESULT CSourceSeeking::GetPositions( __out_opt LONGLONG * pCurrent, __out_opt LONGLONG * pStop )
|
| 1293 | {
|
| 1294 | if(pCurrent) {
|
| 1295 | *pCurrent = m_rtStart;
|
| 1296 | }
|
| 1297 | if(pStop) {
|
| 1298 | *pStop = m_rtStop;
|
| 1299 | }
|
| 1300 |
|
| 1301 | return S_OK;;
|
| 1302 | }
|
| 1303 |
|
| 1304 |
|
| 1305 | HRESULT CSourceSeeking::GetAvailable( __out_opt LONGLONG * pEarliest, __out_opt LONGLONG * pLatest )
|
| 1306 | {
|
| 1307 | if(pEarliest) {
|
| 1308 | *pEarliest = 0;
|
| 1309 | }
|
| 1310 | if(pLatest) {
|
| 1311 | CAutoLock lock(m_pLock);
|
| 1312 | *pLatest = m_rtDuration;
|
| 1313 | }
|
| 1314 | return S_OK;
|
| 1315 | }
|
| 1316 |
|
| 1317 | HRESULT CSourceSeeking::SetRate( double dRate)
|
| 1318 | {
|
| 1319 | {
|
| 1320 | CAutoLock lock(m_pLock);
|
| 1321 | m_dRateSeeking = dRate;
|
| 1322 | }
|
| 1323 | return ChangeRate();
|
| 1324 | }
|
| 1325 |
|
| 1326 | HRESULT CSourceSeeking::GetRate( __out double * pdRate)
|
| 1327 | {
|
| 1328 | CheckPointer(pdRate, E_POINTER);
|
| 1329 | CAutoLock lock(m_pLock);
|
| 1330 | *pdRate = m_dRateSeeking;
|
| 1331 | return S_OK;
|
| 1332 | }
|
| 1333 |
|
| 1334 | HRESULT CSourceSeeking::GetPreroll(__out LONGLONG *pPreroll)
|
| 1335 | {
|
| 1336 | CheckPointer(pPreroll, E_POINTER);
|
| 1337 | *pPreroll = 0;
|
| 1338 | return S_OK;
|
| 1339 | }
|
| 1340 |
|
| 1341 |
|
| 1342 |
|
| 1343 |
|
| 1344 |
|
| 1345 | // --- CSourcePosition implementation ----------
|
| 1346 |
|
| 1347 |
|
| 1348 | CSourcePosition::CSourcePosition(__in_opt LPCTSTR pName,
|
| 1349 | __in_opt LPUNKNOWN pUnk,
|
| 1350 | __inout HRESULT* phr,
|
| 1351 | __in CCritSec * pLock) :
|
| 1352 | CMediaPosition(pName, pUnk),
|
| 1353 | m_pLock(pLock),
|
| 1354 | m_Start(CRefTime((LONGLONG)0))
|
| 1355 | {
|
| 1356 | m_Stop = _I64_MAX;
|
| 1357 | m_Rate = 1.0;
|
| 1358 | }
|
| 1359 |
|
| 1360 |
|
| 1361 | STDMETHODIMP
|
| 1362 | CSourcePosition::get_Duration(__out REFTIME * plength)
|
| 1363 | {
|
| 1364 | CheckPointer(plength,E_POINTER);
|
| 1365 | ValidateReadWritePtr(plength,sizeof(REFTIME));
|
| 1366 | CAutoLock lock(m_pLock);
|
| 1367 |
|
| 1368 | *plength = m_Duration;
|
| 1369 | return S_OK;
|
| 1370 | }
|
| 1371 |
|
| 1372 |
|
| 1373 | STDMETHODIMP
|
| 1374 | CSourcePosition::put_CurrentPosition(REFTIME llTime)
|
| 1375 | {
|
| 1376 | m_pLock->Lock();
|
| 1377 | m_Start = llTime;
|
| 1378 | m_pLock->Unlock();
|
| 1379 |
|
| 1380 | return ChangeStart();
|
| 1381 | }
|
| 1382 |
|
| 1383 |
|
| 1384 | STDMETHODIMP
|
| 1385 | CSourcePosition::get_StopTime(__out REFTIME * pllTime)
|
| 1386 | {
|
| 1387 | CheckPointer(pllTime,E_POINTER);
|
| 1388 | ValidateReadWritePtr(pllTime,sizeof(REFTIME));
|
| 1389 | CAutoLock lock(m_pLock);
|
| 1390 |
|
| 1391 | *pllTime = m_Stop;
|
| 1392 | return S_OK;
|
| 1393 | }
|
| 1394 |
|
| 1395 |
|
| 1396 | STDMETHODIMP
|
| 1397 | CSourcePosition::put_StopTime(REFTIME llTime)
|
| 1398 | {
|
| 1399 | m_pLock->Lock();
|
| 1400 | m_Stop = llTime;
|
| 1401 | m_pLock->Unlock();
|
| 1402 |
|
| 1403 | return ChangeStop();
|
| 1404 | }
|
| 1405 |
|
| 1406 |
|
| 1407 | STDMETHODIMP
|
| 1408 | CSourcePosition::get_PrerollTime(__out REFTIME * pllTime)
|
| 1409 | {
|
| 1410 | CheckPointer(pllTime,E_POINTER);
|
| 1411 | ValidateReadWritePtr(pllTime,sizeof(REFTIME));
|
| 1412 | return E_NOTIMPL;
|
| 1413 | }
|
| 1414 |
|
| 1415 |
|
| 1416 | STDMETHODIMP
|
| 1417 | CSourcePosition::put_PrerollTime(REFTIME llTime)
|
| 1418 | {
|
| 1419 | return E_NOTIMPL;
|
| 1420 | }
|
| 1421 |
|
| 1422 |
|
| 1423 | STDMETHODIMP
|
| 1424 | CSourcePosition::get_Rate(__out double * pdRate)
|
| 1425 | {
|
| 1426 | CheckPointer(pdRate,E_POINTER);
|
| 1427 | ValidateReadWritePtr(pdRate,sizeof(double));
|
| 1428 | CAutoLock lock(m_pLock);
|
| 1429 |
|
| 1430 | *pdRate = m_Rate;
|
| 1431 | return S_OK;
|
| 1432 | }
|
| 1433 |
|
| 1434 |
|
| 1435 | STDMETHODIMP
|
| 1436 | CSourcePosition::put_Rate(double dRate)
|
| 1437 | {
|
| 1438 | m_pLock->Lock();
|
| 1439 | m_Rate = dRate;
|
| 1440 | m_pLock->Unlock();
|
| 1441 |
|
| 1442 | return ChangeRate();
|
| 1443 | }
|
| 1444 |
|
| 1445 |
|
| 1446 | // By default we can seek forwards
|
| 1447 |
|
| 1448 | STDMETHODIMP
|
| 1449 | CSourcePosition::CanSeekForward(__out LONG *pCanSeekForward)
|
| 1450 | {
|
| 1451 | CheckPointer(pCanSeekForward,E_POINTER);
|
| 1452 | *pCanSeekForward = OATRUE;
|
| 1453 | return S_OK;
|
| 1454 | }
|
| 1455 |
|
| 1456 |
|
| 1457 | // By default we can seek backwards
|
| 1458 |
|
| 1459 | STDMETHODIMP
|
| 1460 | CSourcePosition::CanSeekBackward(__out LONG *pCanSeekBackward)
|
| 1461 | {
|
| 1462 | CheckPointer(pCanSeekBackward,E_POINTER);
|
| 1463 | *pCanSeekBackward = OATRUE;
|
| 1464 | return S_OK;
|
| 1465 | }
|
| 1466 |
|
| 1467 |
|
| 1468 | // --- Implementation of CBasicAudio class ----------
|
| 1469 |
|
| 1470 |
|
| 1471 | CBasicAudio::CBasicAudio(__in_opt LPCTSTR pName,__in_opt LPUNKNOWN punk) :
|
| 1472 | CUnknown(pName, punk)
|
| 1473 | {
|
| 1474 | }
|
| 1475 |
|
| 1476 | // overriden to publicise our interfaces
|
| 1477 |
|
| 1478 | STDMETHODIMP
|
| 1479 | CBasicAudio::NonDelegatingQueryInterface(REFIID riid, __deref_out void **ppv)
|
| 1480 | {
|
| 1481 | ValidateReadWritePtr(ppv,sizeof(PVOID));
|
| 1482 | if (riid == IID_IBasicAudio) {
|
| 1483 | return GetInterface( (IBasicAudio *) this, ppv);
|
| 1484 | } else {
|
| 1485 | return CUnknown::NonDelegatingQueryInterface(riid, ppv);
|
| 1486 | }
|
| 1487 | }
|
| 1488 |
|
| 1489 |
|
| 1490 | STDMETHODIMP
|
| 1491 | CBasicAudio::GetTypeInfoCount(__out UINT * pctinfo)
|
| 1492 | {
|
| 1493 | return m_basedisp.GetTypeInfoCount(pctinfo);
|
| 1494 | }
|
| 1495 |
|
| 1496 |
|
| 1497 | STDMETHODIMP
|
| 1498 | CBasicAudio::GetTypeInfo(
|
| 1499 | UINT itinfo,
|
| 1500 | LCID lcid,
|
| 1501 | __deref_out ITypeInfo ** pptinfo)
|
| 1502 | {
|
| 1503 | return m_basedisp.GetTypeInfo(
|
| 1504 | IID_IBasicAudio,
|
| 1505 | itinfo,
|
| 1506 | lcid,
|
| 1507 | pptinfo);
|
| 1508 | }
|
| 1509 |
|
| 1510 |
|
| 1511 | STDMETHODIMP
|
| 1512 | CBasicAudio::GetIDsOfNames(
|
| 1513 | REFIID riid,
|
| 1514 | __in_ecount(cNames) LPOLESTR * rgszNames,
|
| 1515 | UINT cNames,
|
| 1516 | LCID lcid,
|
| 1517 | __out_ecount(cNames) DISPID * rgdispid)
|
| 1518 | {
|
| 1519 | return m_basedisp.GetIDsOfNames(
|
| 1520 | IID_IBasicAudio,
|
| 1521 | rgszNames,
|
| 1522 | cNames,
|
| 1523 | lcid,
|
| 1524 | rgdispid);
|
| 1525 | }
|
| 1526 |
|
| 1527 |
|
| 1528 | STDMETHODIMP
|
| 1529 | CBasicAudio::Invoke(
|
| 1530 | DISPID dispidMember,
|
| 1531 | REFIID riid,
|
| 1532 | LCID lcid,
|
| 1533 | WORD wFlags,
|
| 1534 | __in DISPPARAMS * pdispparams,
|
| 1535 | __out_opt VARIANT * pvarResult,
|
| 1536 | __out_opt EXCEPINFO * pexcepinfo,
|
| 1537 | __out_opt UINT * puArgErr)
|
| 1538 | {
|
| 1539 | // this parameter is a dead leftover from an earlier interface
|
| 1540 | if (IID_NULL != riid) {
|
| 1541 | return DISP_E_UNKNOWNINTERFACE;
|
| 1542 | }
|
| 1543 |
|
| 1544 | ITypeInfo * pti;
|
| 1545 | HRESULT hr = GetTypeInfo(0, lcid, &pti);
|
| 1546 |
|
| 1547 | if (FAILED(hr)) {
|
| 1548 | return hr;
|
| 1549 | }
|
| 1550 |
|
| 1551 | hr = pti->Invoke(
|
| 1552 | (IBasicAudio *)this,
|
| 1553 | dispidMember,
|
| 1554 | wFlags,
|
| 1555 | pdispparams,
|
| 1556 | pvarResult,
|
| 1557 | pexcepinfo,
|
| 1558 | puArgErr);
|
| 1559 |
|
| 1560 | pti->Release();
|
| 1561 | return hr;
|
| 1562 | }
|
| 1563 |
|
| 1564 |
|
| 1565 | // --- IVideoWindow implementation ----------
|
| 1566 |
|
| 1567 | CBaseVideoWindow::CBaseVideoWindow(__in_opt LPCTSTR pName,__in_opt LPUNKNOWN punk) :
|
| 1568 | CUnknown(pName, punk)
|
| 1569 | {
|
| 1570 | }
|
| 1571 |
|
| 1572 |
|
| 1573 | // overriden to publicise our interfaces
|
| 1574 |
|
| 1575 | STDMETHODIMP
|
| 1576 | CBaseVideoWindow::NonDelegatingQueryInterface(REFIID riid, __deref_out void **ppv)
|
| 1577 | {
|
| 1578 | ValidateReadWritePtr(ppv,sizeof(PVOID));
|
| 1579 | if (riid == IID_IVideoWindow) {
|
| 1580 | return GetInterface( (IVideoWindow *) this, ppv);
|
| 1581 | } else {
|
| 1582 | return CUnknown::NonDelegatingQueryInterface(riid, ppv);
|
| 1583 | }
|
| 1584 | }
|
| 1585 |
|
| 1586 |
|
| 1587 | STDMETHODIMP
|
| 1588 | CBaseVideoWindow::GetTypeInfoCount(__out UINT * pctinfo)
|
| 1589 | {
|
| 1590 | return m_basedisp.GetTypeInfoCount(pctinfo);
|
| 1591 | }
|
| 1592 |
|
| 1593 |
|
| 1594 | STDMETHODIMP
|
| 1595 | CBaseVideoWindow::GetTypeInfo(
|
| 1596 | UINT itinfo,
|
| 1597 | LCID lcid,
|
| 1598 | __deref_out ITypeInfo ** pptinfo)
|
| 1599 | {
|
| 1600 | return m_basedisp.GetTypeInfo(
|
| 1601 | IID_IVideoWindow,
|
| 1602 | itinfo,
|
| 1603 | lcid,
|
| 1604 | pptinfo);
|
| 1605 | }
|
| 1606 |
|
| 1607 |
|
| 1608 | STDMETHODIMP
|
| 1609 | CBaseVideoWindow::GetIDsOfNames(
|
| 1610 | REFIID riid,
|
| 1611 | __in_ecount(cNames) LPOLESTR * rgszNames,
|
| 1612 | UINT cNames,
|
| 1613 | LCID lcid,
|
| 1614 | __out_ecount(cNames) DISPID * rgdispid)
|
| 1615 | {
|
| 1616 | return m_basedisp.GetIDsOfNames(
|
| 1617 | IID_IVideoWindow,
|
| 1618 | rgszNames,
|
| 1619 | cNames,
|
| 1620 | lcid,
|
| 1621 | rgdispid);
|
| 1622 | }
|
| 1623 |
|
| 1624 |
|
| 1625 | STDMETHODIMP
|
| 1626 | CBaseVideoWindow::Invoke(
|
| 1627 | DISPID dispidMember,
|
| 1628 | REFIID riid,
|
| 1629 | LCID lcid,
|
| 1630 | WORD wFlags,
|
| 1631 | __in DISPPARAMS * pdispparams,
|
| 1632 | __out_opt VARIANT * pvarResult,
|
| 1633 | __out_opt EXCEPINFO * pexcepinfo,
|
| 1634 | __out_opt UINT * puArgErr)
|
| 1635 | {
|
| 1636 | // this parameter is a dead leftover from an earlier interface
|
| 1637 | if (IID_NULL != riid) {
|
| 1638 | return DISP_E_UNKNOWNINTERFACE;
|
| 1639 | }
|
| 1640 |
|
| 1641 | ITypeInfo * pti;
|
| 1642 | HRESULT hr = GetTypeInfo(0, lcid, &pti);
|
| 1643 |
|
| 1644 | if (FAILED(hr)) {
|
| 1645 | return hr;
|
| 1646 | }
|
| 1647 |
|
| 1648 | hr = pti->Invoke(
|
| 1649 | (IVideoWindow *)this,
|
| 1650 | dispidMember,
|
| 1651 | wFlags,
|
| 1652 | pdispparams,
|
| 1653 | pvarResult,
|
| 1654 | pexcepinfo,
|
| 1655 | puArgErr);
|
| 1656 |
|
| 1657 | pti->Release();
|
| 1658 | return hr;
|
| 1659 | }
|
| 1660 |
|
| 1661 |
|
| 1662 | // --- IBasicVideo implementation ----------
|
| 1663 |
|
| 1664 |
|
| 1665 | CBaseBasicVideo::CBaseBasicVideo(__in_opt LPCTSTR pName,__in_opt LPUNKNOWN punk) :
|
| 1666 | CUnknown(pName, punk)
|
| 1667 | {
|
| 1668 | }
|
| 1669 |
|
| 1670 |
|
| 1671 | // overriden to publicise our interfaces
|
| 1672 |
|
| 1673 | STDMETHODIMP
|
| 1674 | CBaseBasicVideo::NonDelegatingQueryInterface(REFIID riid, __deref_out void **ppv)
|
| 1675 | {
|
| 1676 | ValidateReadWritePtr(ppv,sizeof(PVOID));
|
| 1677 | if (riid == IID_IBasicVideo || riid == IID_IBasicVideo2) {
|
| 1678 | return GetInterface( static_cast<IBasicVideo2 *>(this), ppv);
|
| 1679 | } else {
|
| 1680 | return CUnknown::NonDelegatingQueryInterface(riid, ppv);
|
| 1681 | }
|
| 1682 | }
|
| 1683 |
|
| 1684 |
|
| 1685 | STDMETHODIMP
|
| 1686 | CBaseBasicVideo::GetTypeInfoCount(__out UINT * pctinfo)
|
| 1687 | {
|
| 1688 | return m_basedisp.GetTypeInfoCount(pctinfo);
|
| 1689 | }
|
| 1690 |
|
| 1691 |
|
| 1692 | STDMETHODIMP
|
| 1693 | CBaseBasicVideo::GetTypeInfo(
|
| 1694 | UINT itinfo,
|
| 1695 | LCID lcid,
|
| 1696 | __deref_out ITypeInfo ** pptinfo)
|
| 1697 | {
|
| 1698 | return m_basedisp.GetTypeInfo(
|
| 1699 | IID_IBasicVideo,
|
| 1700 | itinfo,
|
| 1701 | lcid,
|
| 1702 | pptinfo);
|
| 1703 | }
|
| 1704 |
|
| 1705 |
|
| 1706 | STDMETHODIMP
|
| 1707 | CBaseBasicVideo::GetIDsOfNames(
|
| 1708 | REFIID riid,
|
| 1709 | __in_ecount(cNames) LPOLESTR * rgszNames,
|
| 1710 | UINT cNames,
|
| 1711 | LCID lcid,
|
| 1712 | __out_ecount(cNames) DISPID * rgdispid)
|
| 1713 | {
|
| 1714 | return m_basedisp.GetIDsOfNames(
|
| 1715 | IID_IBasicVideo,
|
| 1716 | rgszNames,
|
| 1717 | cNames,
|
| 1718 | lcid,
|
| 1719 | rgdispid);
|
| 1720 | }
|
| 1721 |
|
| 1722 |
|
| 1723 | STDMETHODIMP
|
| 1724 | CBaseBasicVideo::Invoke(
|
| 1725 | DISPID dispidMember,
|
| 1726 | REFIID riid,
|
| 1727 | LCID lcid,
|
| 1728 | WORD wFlags,
|
| 1729 | __in DISPPARAMS * pdispparams,
|
| 1730 | __out_opt VARIANT * pvarResult,
|
| 1731 | __out_opt EXCEPINFO * pexcepinfo,
|
| 1732 | __out_opt UINT * puArgErr)
|
| 1733 | {
|
| 1734 | // this parameter is a dead leftover from an earlier interface
|
| 1735 | if (IID_NULL != riid) {
|
| 1736 | return DISP_E_UNKNOWNINTERFACE;
|
| 1737 | }
|
| 1738 |
|
| 1739 | ITypeInfo * pti;
|
| 1740 | HRESULT hr = GetTypeInfo(0, lcid, &pti);
|
| 1741 |
|
| 1742 | if (FAILED(hr)) {
|
| 1743 | return hr;
|
| 1744 | }
|
| 1745 |
|
| 1746 | hr = pti->Invoke(
|
| 1747 | (IBasicVideo *)this,
|
| 1748 | dispidMember,
|
| 1749 | wFlags,
|
| 1750 | pdispparams,
|
| 1751 | pvarResult,
|
| 1752 | pexcepinfo,
|
| 1753 | puArgErr);
|
| 1754 |
|
| 1755 | pti->Release();
|
| 1756 | return hr;
|
| 1757 | }
|
| 1758 |
|
| 1759 |
|
| 1760 | // --- Implementation of Deferred Commands ----------
|
| 1761 |
|
| 1762 |
|
| 1763 | CDispParams::CDispParams(UINT nArgs, __in_ecount(nArgs) VARIANT* pArgs, __inout_opt HRESULT *phr)
|
| 1764 | {
|
| 1765 | cNamedArgs = 0;
|
| 1766 | rgdispidNamedArgs = NULL;
|
| 1767 | cArgs = nArgs;
|
| 1768 |
|
| 1769 | if (cArgs) {
|
| 1770 | rgvarg = new VARIANT[cArgs];
|
| 1771 | if (NULL == rgvarg) {
|
| 1772 | cArgs = 0;
|
| 1773 | if (phr) {
|
| 1774 | *phr = E_OUTOFMEMORY;
|
| 1775 | }
|
| 1776 | return;
|
| 1777 | }
|
| 1778 |
|
| 1779 | for (UINT i = 0; i < cArgs; i++) {
|
| 1780 |
|
| 1781 | // Why aren't we using VariantCopy?
|
| 1782 |
|
| 1783 | VARIANT * pDest = &rgvarg[i];
|
| 1784 | VARIANT * pSrc = &pArgs[i];
|
| 1785 |
|
| 1786 | pDest->vt = pSrc->vt;
|
| 1787 | switch(pDest->vt) {
|
| 1788 |
|
| 1789 | case VT_I4:
|
| 1790 | pDest->lVal = pSrc->lVal;
|
| 1791 | break;
|
| 1792 |
|
| 1793 | case VT_UI1:
|
| 1794 | pDest->bVal = pSrc->bVal;
|
| 1795 | break;
|
| 1796 |
|
| 1797 | case VT_I2:
|
| 1798 | pDest->iVal = pSrc->iVal;
|
| 1799 | break;
|
| 1800 |
|
| 1801 | case VT_R4:
|
| 1802 | pDest->fltVal = pSrc->fltVal;
|
| 1803 | break;
|
| 1804 |
|
| 1805 | case VT_R8:
|
| 1806 | pDest->dblVal = pSrc->dblVal;
|
| 1807 | break;
|
| 1808 |
|
| 1809 | case VT_BOOL:
|
| 1810 | pDest->boolVal = pSrc->boolVal;
|
| 1811 | break;
|
| 1812 |
|
| 1813 | case VT_ERROR:
|
| 1814 | pDest->scode = pSrc->scode;
|
| 1815 | break;
|
| 1816 |
|
| 1817 | case VT_CY:
|
| 1818 | pDest->cyVal = pSrc->cyVal;
|
| 1819 | break;
|
| 1820 |
|
| 1821 | case VT_DATE:
|
| 1822 | pDest->date = pSrc->date;
|
| 1823 | break;
|
| 1824 |
|
| 1825 | case VT_BSTR:
|
| 1826 | if ((PVOID)pSrc->bstrVal == NULL) {
|
| 1827 | pDest->bstrVal = NULL;
|
| 1828 | } else {
|
| 1829 |
|
| 1830 | // a BSTR is a WORD followed by a UNICODE string.
|
| 1831 | // the pointer points just after the WORD
|
| 1832 |
|
| 1833 | WORD len = * (WORD*) (pSrc->bstrVal - (sizeof(WORD) / sizeof(OLECHAR)));
|
| 1834 | OLECHAR* pch = new OLECHAR[len + (sizeof(WORD)/sizeof(OLECHAR))];
|
| 1835 | if (pch) {
|
| 1836 | WORD *pui = (WORD*)pch;
|
| 1837 | *pui = len;
|
| 1838 | pDest->bstrVal = pch + (sizeof(WORD)/sizeof(OLECHAR));
|
| 1839 | CopyMemory(pDest->bstrVal, pSrc->bstrVal, len*sizeof(OLECHAR));
|
| 1840 | } else {
|
| 1841 | cArgs = i;
|
| 1842 | if (phr) {
|
| 1843 | *phr = E_OUTOFMEMORY;
|
| 1844 | }
|
| 1845 | }
|
| 1846 | }
|
| 1847 | break;
|
| 1848 |
|
| 1849 | case VT_UNKNOWN:
|
| 1850 | pDest->punkVal = pSrc->punkVal;
|
| 1851 | pDest->punkVal->AddRef();
|
| 1852 | break;
|
| 1853 |
|
| 1854 | case VT_DISPATCH:
|
| 1855 | pDest->pdispVal = pSrc->pdispVal;
|
| 1856 | pDest->pdispVal->AddRef();
|
| 1857 | break;
|
| 1858 |
|
| 1859 | default:
|
| 1860 | // a type we haven't got round to adding yet!
|
| 1861 | ASSERT(0);
|
| 1862 | break;
|
| 1863 | }
|
| 1864 | }
|
| 1865 |
|
| 1866 | } else {
|
| 1867 | rgvarg = NULL;
|
| 1868 | }
|
| 1869 |
|
| 1870 | }
|
| 1871 |
|
| 1872 |
|
| 1873 | CDispParams::~CDispParams()
|
| 1874 | {
|
| 1875 | for (UINT i = 0; i < cArgs; i++) {
|
| 1876 | switch(rgvarg[i].vt) {
|
| 1877 | case VT_BSTR:
|
| 1878 | // Explicitly cast BSTR to PVOID to tell code scanning tools we really mean to test the pointer
|
| 1879 | if ((PVOID)rgvarg[i].bstrVal != NULL) {
|
| 1880 | OLECHAR * pch = rgvarg[i].bstrVal - (sizeof(WORD)/sizeof(OLECHAR));
|
| 1881 | delete pch;
|
| 1882 | }
|
| 1883 | break;
|
| 1884 |
|
| 1885 | case VT_UNKNOWN:
|
| 1886 | rgvarg[i].punkVal->Release();
|
| 1887 | break;
|
| 1888 |
|
| 1889 | case VT_DISPATCH:
|
| 1890 | rgvarg[i].pdispVal->Release();
|
| 1891 | break;
|
| 1892 | }
|
| 1893 | }
|
| 1894 | delete[] rgvarg;
|
| 1895 | }
|
| 1896 |
|
| 1897 |
|
| 1898 | // lifetime is controlled by refcounts (see defer.h)
|
| 1899 |
|
| 1900 | CDeferredCommand::CDeferredCommand(
|
| 1901 | __inout CCmdQueue * pQ,
|
| 1902 | __in_opt LPUNKNOWN pUnk,
|
| 1903 | __inout HRESULT * phr,
|
| 1904 | __in LPUNKNOWN pUnkExecutor,
|
| 1905 | REFTIME time,
|
| 1906 | __in GUID* iid,
|
| 1907 | long dispidMethod,
|
| 1908 | short wFlags,
|
| 1909 | long nArgs,
|
| 1910 | __in_ecount(nArgs) VARIANT* pDispParams,
|
| 1911 | __out VARIANT* pvarResult,
|
| 1912 | __out short* puArgErr,
|
| 1913 | BOOL bStream
|
| 1914 | ) :
|
| 1915 | CUnknown(NAME("DeferredCommand"), pUnk),
|
| 1916 | m_pQueue(pQ),
|
| 1917 | m_pUnk(pUnkExecutor),
|
| 1918 | m_iid(iid),
|
| 1919 | m_dispidMethod(dispidMethod),
|
| 1920 | m_wFlags(wFlags),
|
| 1921 | m_DispParams(nArgs, pDispParams, phr),
|
| 1922 | m_pvarResult(pvarResult),
|
| 1923 | m_bStream(bStream),
|
| 1924 | m_hrResult(E_ABORT)
|
| 1925 |
|
| 1926 | {
|
| 1927 | // convert REFTIME to REFERENCE_TIME
|
| 1928 | COARefTime convertor(time);
|
| 1929 | m_time = convertor;
|
| 1930 |
|
| 1931 | // no check of time validity - it's ok to queue a command that's
|
| 1932 | // already late
|
| 1933 |
|
| 1934 | // check iid is supportable on pUnk by QueryInterface for it
|
| 1935 | IUnknown * pInterface;
|
| 1936 | HRESULT hr = m_pUnk->QueryInterface(GetIID(), (void**) &pInterface);
|
| 1937 | if (FAILED(hr)) {
|
| 1938 | *phr = hr;
|
| 1939 | return;
|
| 1940 | }
|
| 1941 | pInterface->Release();
|
| 1942 |
|
| 1943 |
|
| 1944 | // !!! check dispidMethod and param/return types using typelib
|
| 1945 | ITypeInfo *pti;
|
| 1946 | hr = m_Dispatch.GetTypeInfo(*iid, 0, 0, &pti);
|
| 1947 | if (FAILED(hr)) {
|
| 1948 | *phr = hr;
|
| 1949 | return;
|
| 1950 | }
|
| 1951 | // !!! some sort of ITypeInfo validity check here
|
| 1952 | pti->Release();
|
| 1953 |
|
| 1954 |
|
| 1955 | // Fix up the dispid for put and get
|
| 1956 | if (wFlags == DISPATCH_PROPERTYPUT) {
|
| 1957 | m_DispParams.cNamedArgs = 1;
|
| 1958 | m_DispId = DISPID_PROPERTYPUT;
|
| 1959 | m_DispParams.rgdispidNamedArgs = &m_DispId;
|
| 1960 | }
|
| 1961 |
|
| 1962 | // all checks ok - add to queue
|
| 1963 | hr = pQ->Insert(this);
|
| 1964 | if (FAILED(hr)) {
|
| 1965 | *phr = hr;
|
| 1966 | }
|
| 1967 | }
|
| 1968 |
|
| 1969 |
|
| 1970 | // refcounts are held by caller of InvokeAt... and by list. So if
|
| 1971 | // we get here, we can't be on the list
|
| 1972 |
|
| 1973 | #if 0
|
| 1974 | CDeferredCommand::~CDeferredCommand()
|
| 1975 | {
|
| 1976 | // this assert is invalid since if the queue is deleted while we are
|
| 1977 | // still on the queue, we will have been removed by the queue and this
|
| 1978 | // m_pQueue will not have been modified.
|
| 1979 | // ASSERT(m_pQueue == NULL);
|
| 1980 |
|
| 1981 | // we don't hold a ref count on pUnk, which is the object that should
|
| 1982 | // execute the command.
|
| 1983 | // This is because there would otherwise be a circular refcount problem
|
| 1984 | // since pUnk probably owns the CmdQueue object that has a refcount
|
| 1985 | // on us.
|
| 1986 | // The lifetime of pUnk is guaranteed by it being part of, or lifetime
|
| 1987 | // controlled by, our parent object. As long as we are on the list, pUnk
|
| 1988 | // must be valid. Once we are off the list, we do not use pUnk.
|
| 1989 |
|
| 1990 | }
|
| 1991 | #endif
|
| 1992 |
|
| 1993 |
|
| 1994 | // overriden to publicise our interfaces
|
| 1995 |
|
| 1996 | STDMETHODIMP
|
| 1997 | CDeferredCommand::NonDelegatingQueryInterface(REFIID riid, __out void **ppv)
|
| 1998 | {
|
| 1999 | ValidateReadWritePtr(ppv,sizeof(PVOID));
|
| 2000 | if (riid == IID_IDeferredCommand) {
|
| 2001 | return GetInterface( (IDeferredCommand *) this, ppv);
|
| 2002 | } else {
|
| 2003 | return CUnknown::NonDelegatingQueryInterface(riid, ppv);
|
| 2004 | }
|
| 2005 | }
|
| 2006 |
|
| 2007 |
|
| 2008 | // remove from q. this will reduce the refcount by one (since the q
|
| 2009 | // holds a count) but can't make us go away since he must have a
|
| 2010 | // refcount in order to call this method.
|
| 2011 |
|
| 2012 | STDMETHODIMP
|
| 2013 | CDeferredCommand::Cancel()
|
| 2014 | {
|
| 2015 | if (m_pQueue == NULL) {
|
| 2016 | return VFW_E_ALREADY_CANCELLED;
|
| 2017 | }
|
| 2018 |
|
| 2019 | HRESULT hr = m_pQueue->Remove(this);
|
| 2020 | if (FAILED(hr)) {
|
| 2021 | return hr;
|
| 2022 | }
|
| 2023 |
|
| 2024 | m_pQueue = NULL;
|
| 2025 | return S_OK;
|
| 2026 | }
|
| 2027 |
|
| 2028 |
|
| 2029 | STDMETHODIMP
|
| 2030 | CDeferredCommand::Confidence(__out LONG* pConfidence)
|
| 2031 | {
|
| 2032 | return E_NOTIMPL;
|
| 2033 | }
|
| 2034 |
|
| 2035 |
|
| 2036 | STDMETHODIMP
|
| 2037 | CDeferredCommand::GetHResult(__out HRESULT * phrResult)
|
| 2038 | {
|
| 2039 | CheckPointer(phrResult,E_POINTER);
|
| 2040 | ValidateReadWritePtr(phrResult,sizeof(HRESULT));
|
| 2041 |
|
| 2042 | if (m_pQueue != NULL) {
|
| 2043 | return E_ABORT;
|
| 2044 | }
|
| 2045 | *phrResult = m_hrResult;
|
| 2046 | return S_OK;
|
| 2047 | }
|
| 2048 |
|
| 2049 |
|
| 2050 | // set the time to be a new time (checking that it is valid) and
|
| 2051 | // then requeue
|
| 2052 |
|
| 2053 | STDMETHODIMP
|
| 2054 | CDeferredCommand::Postpone(REFTIME newtime)
|
| 2055 | {
|
| 2056 |
|
| 2057 | // check that this time is not past
|
| 2058 | // convert REFTIME to REFERENCE_TIME
|
| 2059 | COARefTime convertor(newtime);
|
| 2060 |
|
| 2061 | // check that the time has not passed
|
| 2062 | if (m_pQueue->CheckTime(convertor, IsStreamTime())) {
|
| 2063 | return VFW_E_TIME_ALREADY_PASSED;
|
| 2064 | }
|
| 2065 |
|
| 2066 | // extract from list
|
| 2067 | HRESULT hr = m_pQueue->Remove(this);
|
| 2068 | if (FAILED(hr)) {
|
| 2069 | return hr;
|
| 2070 | }
|
| 2071 |
|
| 2072 | // change time
|
| 2073 | m_time = convertor;
|
| 2074 |
|
| 2075 | // requeue
|
| 2076 | hr = m_pQueue->Insert(this);
|
| 2077 |
|
| 2078 | return hr;
|
| 2079 | }
|
| 2080 |
|
| 2081 |
|
| 2082 | HRESULT
|
| 2083 | CDeferredCommand::Invoke()
|
| 2084 | {
|
| 2085 | // check that we are still outstanding
|
| 2086 | if (m_pQueue == NULL) {
|
| 2087 | return VFW_E_ALREADY_CANCELLED;
|
| 2088 | }
|
| 2089 |
|
| 2090 | // get the type info
|
| 2091 | ITypeInfo* pti;
|
| 2092 | HRESULT hr = m_Dispatch.GetTypeInfo(GetIID(), 0, 0, &pti);
|
| 2093 | if (FAILED(hr)) {
|
| 2094 | return hr;
|
| 2095 | }
|
| 2096 |
|
| 2097 | // qi for the expected interface and then invoke it. Note that we have to
|
| 2098 | // treat the returned interface as IUnknown since we don't know its type.
|
| 2099 | IUnknown* pInterface;
|
| 2100 |
|
| 2101 | hr = m_pUnk->QueryInterface(GetIID(), (void**) &pInterface);
|
| 2102 | if (FAILED(hr)) {
|
| 2103 | pti->Release();
|
| 2104 | return hr;
|
| 2105 | }
|
| 2106 |
|
| 2107 | EXCEPINFO expinfo;
|
| 2108 | UINT uArgErr;
|
| 2109 | m_hrResult = pti->Invoke(
|
| 2110 | pInterface,
|
| 2111 | GetMethod(),
|
| 2112 | GetFlags(),
|
| 2113 | GetParams(),
|
| 2114 | GetResult(),
|
| 2115 | &expinfo,
|
| 2116 | &uArgErr);
|
| 2117 |
|
| 2118 | // release the interface we QI'd for
|
| 2119 | pInterface->Release();
|
| 2120 | pti->Release();
|
| 2121 |
|
| 2122 |
|
| 2123 | // remove from list whether or not successful
|
| 2124 | // or we loop indefinitely
|
| 2125 | hr = m_pQueue->Remove(this);
|
| 2126 | m_pQueue = NULL;
|
| 2127 | return hr;
|
| 2128 | }
|
| 2129 |
|
| 2130 |
|
| 2131 |
|
| 2132 | // --- CCmdQueue methods ----------
|
| 2133 |
|
| 2134 |
|
| 2135 | CCmdQueue::CCmdQueue(__inout_opt HRESULT *phr) :
|
| 2136 | m_listPresentation(NAME("Presentation time command list")),
|
| 2137 | m_listStream(NAME("Stream time command list")),
|
| 2138 | m_evDue(TRUE, phr), // manual reset
|
| 2139 | m_dwAdvise(0),
|
| 2140 | m_pClock(NULL),
|
| 2141 | m_bRunning(FALSE)
|
| 2142 | {
|
| 2143 | }
|
| 2144 |
|
| 2145 |
|
| 2146 | CCmdQueue::~CCmdQueue()
|
| 2147 | {
|
| 2148 | // empty all our lists
|
| 2149 |
|
| 2150 | // we hold a refcount on each, so traverse and Release each
|
| 2151 | // entry then RemoveAll to empty the list
|
| 2152 | POSITION pos = m_listPresentation.GetHeadPosition();
|
| 2153 |
|
| 2154 | while(pos) {
|
| 2155 | CDeferredCommand* pCmd = m_listPresentation.GetNext(pos);
|
| 2156 | pCmd->Release();
|
| 2157 | }
|
| 2158 | m_listPresentation.RemoveAll();
|
| 2159 |
|
| 2160 | pos = m_listStream.GetHeadPosition();
|
| 2161 |
|
| 2162 | while(pos) {
|
| 2163 | CDeferredCommand* pCmd = m_listStream.GetNext(pos);
|
| 2164 | pCmd->Release();
|
| 2165 | }
|
| 2166 | m_listStream.RemoveAll();
|
| 2167 |
|
| 2168 | if (m_pClock) {
|
| 2169 | if (m_dwAdvise) {
|
| 2170 | m_pClock->Unadvise(m_dwAdvise);
|
| 2171 | m_dwAdvise = 0;
|
| 2172 | }
|
| 2173 | m_pClock->Release();
|
| 2174 | }
|
| 2175 | }
|
| 2176 |
|
| 2177 |
|
| 2178 | // returns a new CDeferredCommand object that will be initialised with
|
| 2179 | // the parameters and will be added to the queue during construction.
|
| 2180 | // returns S_OK if successfully created otherwise an error and
|
| 2181 | // no object has been queued.
|
| 2182 |
|
| 2183 | HRESULT
|
| 2184 | CCmdQueue::New(
|
| 2185 | __out CDeferredCommand **ppCmd,
|
| 2186 | __in LPUNKNOWN pUnk, // this object will execute command
|
| 2187 | REFTIME time,
|
| 2188 | __in GUID* iid,
|
| 2189 | long dispidMethod,
|
| 2190 | short wFlags,
|
| 2191 | long cArgs,
|
| 2192 | __in_ecount(cArgs) VARIANT* pDispParams,
|
| 2193 | __out VARIANT* pvarResult,
|
| 2194 | __out short* puArgErr,
|
| 2195 | BOOL bStream
|
| 2196 | )
|
| 2197 | {
|
| 2198 | CAutoLock lock(&m_Lock);
|
| 2199 |
|
| 2200 | HRESULT hr = S_OK;
|
| 2201 | *ppCmd = NULL;
|
| 2202 |
|
| 2203 | CDeferredCommand* pCmd;
|
| 2204 | pCmd = new CDeferredCommand(
|
| 2205 | this,
|
| 2206 | NULL, // not aggregated
|
| 2207 | &hr,
|
| 2208 | pUnk, // this guy will execute
|
| 2209 | time,
|
| 2210 | iid,
|
| 2211 | dispidMethod,
|
| 2212 | wFlags,
|
| 2213 | cArgs,
|
| 2214 | pDispParams,
|
| 2215 | pvarResult,
|
| 2216 | puArgErr,
|
| 2217 | bStream);
|
| 2218 |
|
| 2219 | if (pCmd == NULL) {
|
| 2220 | hr = E_OUTOFMEMORY;
|
| 2221 | } else {
|
| 2222 | *ppCmd = pCmd;
|
| 2223 | }
|
| 2224 | return hr;
|
| 2225 | }
|
| 2226 |
|
| 2227 |
|
| 2228 | HRESULT
|
| 2229 | CCmdQueue::Insert(__in CDeferredCommand* pCmd)
|
| 2230 | {
|
| 2231 | CAutoLock lock(&m_Lock);
|
| 2232 |
|
| 2233 | // addref the item
|
| 2234 | pCmd->AddRef();
|
| 2235 |
|
| 2236 | CGenericList<CDeferredCommand> * pList;
|
| 2237 | if (pCmd->IsStreamTime()) {
|
| 2238 | pList = &m_listStream;
|
| 2239 | } else {
|
| 2240 | pList = &m_listPresentation;
|
| 2241 | }
|
| 2242 | POSITION pos = pList->GetHeadPosition();
|
| 2243 |
|
| 2244 | // seek past all items that are before us
|
| 2245 | while (pos &&
|
| 2246 | (pList->GetValid(pos)->GetTime() <= pCmd->GetTime())) {
|
| 2247 |
|
| 2248 | pList->GetNext(pos);
|
| 2249 | }
|
| 2250 |
|
| 2251 | // now at end of list or in front of items that come later
|
| 2252 | if (!pos) {
|
| 2253 | pList->AddTail(pCmd);
|
| 2254 | } else {
|
| 2255 | pList->AddBefore(pos, pCmd);
|
| 2256 | }
|
| 2257 |
|
| 2258 | SetTimeAdvise();
|
| 2259 | return S_OK;
|
| 2260 | }
|
| 2261 |
|
| 2262 |
|
| 2263 | HRESULT
|
| 2264 | CCmdQueue::Remove(__in CDeferredCommand* pCmd)
|
| 2265 | {
|
| 2266 | CAutoLock lock(&m_Lock);
|
| 2267 | HRESULT hr = S_OK;
|
| 2268 |
|
| 2269 | CGenericList<CDeferredCommand> * pList;
|
| 2270 | if (pCmd->IsStreamTime()) {
|
| 2271 | pList = &m_listStream;
|
| 2272 | } else {
|
| 2273 | pList = &m_listPresentation;
|
| 2274 | }
|
| 2275 | POSITION pos = pList->GetHeadPosition();
|
| 2276 |
|
| 2277 | // traverse the list
|
| 2278 | while (pos && (pList->GetValid(pos) != pCmd)) {
|
| 2279 | pList->GetNext(pos);
|
| 2280 | }
|
| 2281 |
|
| 2282 | // did we drop off the end?
|
| 2283 | if (!pos) {
|
| 2284 | hr = VFW_E_NOT_FOUND;
|
| 2285 | } else {
|
| 2286 |
|
| 2287 | // found it - now take off list
|
| 2288 | pList->Remove(pos);
|
| 2289 |
|
| 2290 | // Insert did an AddRef, so release it
|
| 2291 | pCmd->Release();
|
| 2292 |
|
| 2293 | // check that timer request is still for earliest time
|
| 2294 | SetTimeAdvise();
|
| 2295 | }
|
| 2296 | return hr;
|
| 2297 | }
|
| 2298 |
|
| 2299 |
|
| 2300 | // set the clock used for timing
|
| 2301 |
|
| 2302 | HRESULT
|
| 2303 | CCmdQueue::SetSyncSource(__in_opt IReferenceClock* pClock)
|
| 2304 | {
|
| 2305 | CAutoLock lock(&m_Lock);
|
| 2306 |
|
| 2307 | // addref the new clock first in case they are the same
|
| 2308 | if (pClock) {
|
| 2309 | pClock->AddRef();
|
| 2310 | }
|
| 2311 |
|
| 2312 | // kill any advise on the old clock
|
| 2313 | if (m_pClock) {
|
| 2314 | if (m_dwAdvise) {
|
| 2315 | m_pClock->Unadvise(m_dwAdvise);
|
| 2316 | m_dwAdvise = 0;
|
| 2317 | }
|
| 2318 | m_pClock->Release();
|
| 2319 | }
|
| 2320 | m_pClock = pClock;
|
| 2321 |
|
| 2322 | // set up a new advise
|
| 2323 | SetTimeAdvise();
|
| 2324 | return S_OK;
|
| 2325 | }
|
| 2326 |
|
| 2327 |
|
| 2328 | // set up a timer event with the reference clock
|
| 2329 |
|
| 2330 | void
|
| 2331 | CCmdQueue::SetTimeAdvise(void)
|
| 2332 | {
|
| 2333 | // make sure we have a clock to use
|
| 2334 | if (!m_pClock) {
|
| 2335 | return;
|
| 2336 | }
|
| 2337 |
|
| 2338 | // reset the event whenever we are requesting a new signal
|
| 2339 | m_evDue.Reset();
|
| 2340 |
|
| 2341 | // time 0 is earliest
|
| 2342 | CRefTime current;
|
| 2343 |
|
| 2344 | // find the earliest presentation time
|
| 2345 | POSITION pos = m_listPresentation.GetHeadPosition();
|
| 2346 | if (pos != NULL) {
|
| 2347 | current = m_listPresentation.GetValid(pos)->GetTime();
|
| 2348 | }
|
| 2349 |
|
| 2350 | // if we're running, check the stream times too
|
| 2351 | if (m_bRunning) {
|
| 2352 |
|
| 2353 | CRefTime t;
|
| 2354 | pos = m_listStream.GetHeadPosition();
|
| 2355 | if (NULL != pos) {
|
| 2356 | t = m_listStream.GetValid(pos)->GetTime();
|
| 2357 |
|
| 2358 | // add on stream time offset to get presentation time
|
| 2359 | t += m_StreamTimeOffset;
|
| 2360 |
|
| 2361 | // is this earlier?
|
| 2362 | if ((current == TimeZero) || (t < current)) {
|
| 2363 | current = t;
|
| 2364 | }
|
| 2365 | }
|
| 2366 | }
|
| 2367 |
|
| 2368 | // need to change?
|
| 2369 | if ((current > TimeZero) && (current != m_tCurrentAdvise)) {
|
| 2370 | if (m_dwAdvise) {
|
| 2371 | m_pClock->Unadvise(m_dwAdvise);
|
| 2372 | // reset the event whenever we are requesting a new signal
|
| 2373 | m_evDue.Reset();
|
| 2374 | }
|
| 2375 |
|
| 2376 | // ask for time advice - the first two params are either
|
| 2377 | // stream time offset and stream time or
|
| 2378 | // presentation time and 0. we always use the latter
|
| 2379 | HRESULT hr = m_pClock->AdviseTime(
|
| 2380 | (REFERENCE_TIME)current,
|
| 2381 | TimeZero,
|
| 2382 | (HEVENT) HANDLE(m_evDue),
|
| 2383 | &m_dwAdvise);
|
| 2384 |
|
| 2385 | ASSERT(SUCCEEDED(hr));
|
| 2386 | m_tCurrentAdvise = current;
|
| 2387 | }
|
| 2388 | }
|
| 2389 |
|
| 2390 |
|
| 2391 | // switch to run mode. Streamtime to Presentation time mapping known.
|
| 2392 |
|
| 2393 | HRESULT
|
| 2394 | CCmdQueue::Run(REFERENCE_TIME tStreamTimeOffset)
|
| 2395 | {
|
| 2396 | CAutoLock lock(&m_Lock);
|
| 2397 |
|
| 2398 | m_StreamTimeOffset = tStreamTimeOffset;
|
| 2399 | m_bRunning = TRUE;
|
| 2400 |
|
| 2401 | // ensure advise is accurate
|
| 2402 | SetTimeAdvise();
|
| 2403 | return S_OK;
|
| 2404 | }
|
| 2405 |
|
| 2406 |
|
| 2407 | // switch to Stopped or Paused mode. Time mapping not known.
|
| 2408 |
|
| 2409 | HRESULT
|
| 2410 | CCmdQueue::EndRun()
|
| 2411 | {
|
| 2412 | CAutoLock lock(&m_Lock);
|
| 2413 |
|
| 2414 | m_bRunning = FALSE;
|
| 2415 |
|
| 2416 | // check timer setting - stream times
|
| 2417 | SetTimeAdvise();
|
| 2418 | return S_OK;
|
| 2419 | }
|
| 2420 |
|
| 2421 |
|
| 2422 | // return a pointer to the next due command. Blocks for msTimeout
|
| 2423 | // milliseconds until there is a due command.
|
| 2424 | // Stream-time commands will only become due between Run and Endrun calls.
|
| 2425 | // The command remains queued until invoked or cancelled.
|
| 2426 | // Returns E_ABORT if timeout occurs, otherwise S_OK (or other error).
|
| 2427 | //
|
| 2428 | // returns an AddRef'd object
|
| 2429 |
|
| 2430 | HRESULT
|
| 2431 | CCmdQueue::GetDueCommand(__out CDeferredCommand ** ppCmd, long msTimeout)
|
| 2432 | {
|
| 2433 | // loop until we timeout or find a due command
|
| 2434 | for (;;) {
|
| 2435 |
|
| 2436 | {
|
| 2437 | CAutoLock lock(&m_Lock);
|
| 2438 |
|
| 2439 |
|
| 2440 | // find the earliest command
|
| 2441 | CDeferredCommand * pCmd = NULL;
|
| 2442 |
|
| 2443 | // check the presentation time and the
|
| 2444 | // stream time list to find the earliest
|
| 2445 |
|
| 2446 | POSITION pos = m_listPresentation.GetHeadPosition();
|
| 2447 |
|
| 2448 | if (NULL != pos) {
|
| 2449 | pCmd = m_listPresentation.GetValid(pos);
|
| 2450 | }
|
| 2451 |
|
| 2452 | if (m_bRunning) {
|
| 2453 | pos = m_listStream.GetHeadPosition();
|
| 2454 | if (NULL != pos) {
|
| 2455 | CDeferredCommand* pStrm = m_listStream.GetValid(pos);
|
| 2456 |
|
| 2457 | CRefTime t = pStrm->GetTime() + m_StreamTimeOffset;
|
| 2458 | if (!pCmd || (t < pCmd->GetTime())) {
|
| 2459 | pCmd = pStrm;
|
| 2460 | }
|
| 2461 | }
|
| 2462 | }
|
| 2463 |
|
| 2464 | // if we have found one, is it due?
|
| 2465 | if (pCmd) {
|
| 2466 | if (CheckTime(pCmd->GetTime(), pCmd->IsStreamTime())) {
|
| 2467 |
|
| 2468 | // yes it's due - addref it
|
| 2469 | pCmd->AddRef();
|
| 2470 | *ppCmd = pCmd;
|
| 2471 | return S_OK;
|
| 2472 | }
|
| 2473 | }
|
| 2474 | }
|
| 2475 |
|
| 2476 | // block until the advise is signalled
|
| 2477 | if (WaitForSingleObject(m_evDue, msTimeout) != WAIT_OBJECT_0) {
|
| 2478 | return E_ABORT;
|
| 2479 | }
|
| 2480 | }
|
| 2481 | }
|
| 2482 |
|
| 2483 |
|
| 2484 | // return a pointer to a command that will be due for a given time.
|
| 2485 | // Pass in a stream time here. The stream time offset will be passed
|
| 2486 | // in via the Run method.
|
| 2487 | // Commands remain queued until invoked or cancelled.
|
| 2488 | // This method will not block. It will report E_ABORT if there are no
|
| 2489 | // commands due yet.
|
| 2490 | //
|
| 2491 | // returns an AddRef'd object
|
| 2492 |
|
| 2493 | HRESULT
|
| 2494 | CCmdQueue::GetCommandDueFor(REFERENCE_TIME rtStream, __out CDeferredCommand**ppCmd)
|
| 2495 | {
|
| 2496 | CAutoLock lock(&m_Lock);
|
| 2497 |
|
| 2498 | CRefTime tStream(rtStream);
|
| 2499 |
|
| 2500 | // find the earliest stream and presentation time commands
|
| 2501 | CDeferredCommand* pStream = NULL;
|
| 2502 | POSITION pos = m_listStream.GetHeadPosition();
|
| 2503 | if (NULL != pos) {
|
| 2504 | pStream = m_listStream.GetValid(pos);
|
| 2505 | }
|
| 2506 | CDeferredCommand* pPresent = NULL;
|
| 2507 | pos = m_listPresentation.GetHeadPosition();
|
| 2508 | if (NULL != pos) {
|
| 2509 | pPresent = m_listPresentation.GetValid(pos);
|
| 2510 | }
|
| 2511 |
|
| 2512 | // is there a presentation time that has passed already
|
| 2513 | if (pPresent && CheckTime(pPresent->GetTime(), FALSE)) {
|
| 2514 | pPresent->AddRef();
|
| 2515 | *ppCmd = pPresent;
|
| 2516 | return S_OK;
|
| 2517 | }
|
| 2518 |
|
| 2519 | // is there a stream time command due before this stream time
|
| 2520 | if (pStream && (pStream->GetTime() <= tStream)) {
|
| 2521 | pStream->AddRef();
|
| 2522 | *ppCmd = pStream;
|
| 2523 | return S_OK;
|
| 2524 | }
|
| 2525 |
|
| 2526 | // if we are running, we can map presentation times to
|
| 2527 | // stream time. In this case, is there a presentation time command
|
| 2528 | // that will be due before this stream time is presented?
|
| 2529 | if (m_bRunning && pPresent) {
|
| 2530 |
|
| 2531 | // this stream time will appear at...
|
| 2532 | tStream += m_StreamTimeOffset;
|
| 2533 |
|
| 2534 | // due before that?
|
| 2535 | if (pPresent->GetTime() <= tStream) {
|
| 2536 | *ppCmd = pPresent;
|
| 2537 | return S_OK;
|
| 2538 | }
|
| 2539 | }
|
| 2540 |
|
| 2541 | // no commands due yet
|
| 2542 | return VFW_E_NOT_FOUND;
|
| 2543 | }
|
| 2544 |
|
| 2545 | #endif /* PJMEDIA_VIDEO_DEV_HAS_DSHOW */
|