[4] | 1 | /******************************************************************************
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| 2 | * SAGE - Scalable Adaptive Graphics Environment
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| 3 | *
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| 4 | * Copyright (C) 2004 Electronic Visualization Laboratory,
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| 5 | * University of Illinois at Chicago
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| 6 | *
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| 7 | * All rights reserved.
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| 8 | *
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| 9 | * Redistribution and use in source and binary forms, with or without
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| 10 | * modification, are permitted provided that the following conditions are met:
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| 11 | *
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| 12 | * * Redistributions of source code must retain the above copyright
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| 13 | * notice, this list of conditions and the following disclaimer.
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| 14 | * * Redistributions in binary form must reproduce the above
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| 15 | * copyright notice, this list of conditions and the following disclaimer
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| 16 | * in the documentation and/or other materials provided with the distribution.
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| 17 | * * Neither the name of the University of Illinois at Chicago nor
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| 18 | * the names of its contributors may be used to endorse or promote
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| 19 | * products derived from this software without specific prior written permission.
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| 20 | *
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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| 22 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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| 23 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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| 24 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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| 25 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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| 26 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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| 27 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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| 28 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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| 29 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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| 30 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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| 31 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 32 | *
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| 33 | * Direct questions, comments etc about SAGE to http://www.evl.uic.edu/cavern/forum/
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| 34 | *
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| 35 | *****************************************************************************/
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| 36 |
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| 37 | //------------------------------------------------------------------------------------
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| 38 | // $Id: Utils.cpp,v 1.10 2006/04/11 01:13:06 ivanr Exp $
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| 39 | //
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| 40 | // Desc: DirectShow utility class implementation
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| 41 | //
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| 42 | // Copyright (c) Blackmagic Design 2005. All rights reserved.
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| 43 | //------------------------------------------------------------------------------------
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| 44 |
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| 45 | #include "stdafx.h"
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| 46 | #include "Utils.h"
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| 47 |
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| 48 | //-----------------------------------------------------------------------------
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| 49 | // CDSUtils - Directshow utility class
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| 50 | //-----------------------------------------------------------------------------
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| 51 | //-----------------------------------------------------------------------------
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| 52 | // AddFilter
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| 53 | // Attempts to locate a filter of a given class ID and name and add it to the graph
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| 54 | // If your DirectShow application supports playback of DRM-protected files,
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| 55 | // then you generally should not use RenderFile to create the filter graph
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| 56 | // because there is no way to specify which DRM rights you are requesting before the file is opened.
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| 57 | // The WM ASF Reader by default asks for only playback rights.
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| 58 | // The filter is not added to the graph, and is therefore not discoverable by applications, until a file is successfully opened.
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| 59 | HRESULT CDSUtils::AddFilter(IGraphBuilder* pGraph, const GUID &clsid, LPCWSTR pName, IBaseFilter** ppFilter)
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| 60 | {
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| 61 | HRESULT hr = S_OK;
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| 62 |
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| 63 | if (pGraph && pName && ppFilter)
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| 64 | {
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| 65 | *ppFilter = NULL;
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| 66 | IBaseFilter* pFilter = NULL;
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| 67 | hr = CoCreateInstance(clsid, 0, CLSCTX_INPROC_SERVER, IID_IBaseFilter, reinterpret_cast<void**>(&pFilter));
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| 68 | if (SUCCEEDED(hr))
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| 69 | {
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| 70 | hr = pGraph->AddFilter(pFilter, pName);
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| 71 | if (SUCCEEDED(hr))
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| 72 | {
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| 73 | *ppFilter = pFilter;
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| 74 | }
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| 75 | else
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| 76 | {
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| 77 | SAFE_RELEASE(pFilter);
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| 78 | }
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| 79 | }
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| 80 | }
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| 81 | else
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| 82 | {
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| 83 | hr = E_INVALIDARG;
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| 84 | }
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| 85 |
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| 86 | return hr;
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| 87 | }
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| 88 |
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| 89 | //-----------------------------------------------------------------------------
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| 90 | // AddFilter2
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| 91 | // Attempts to locate a filter of a given class category and name
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| 92 | HRESULT CDSUtils::AddFilter2(IGraphBuilder* pGraph, const GUID &clsid, LPCWSTR pName, IBaseFilter** ppFilter)
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| 93 | {
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| 94 | HRESULT hr = S_OK;
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| 95 |
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| 96 | if (pGraph && pName && ppFilter)
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| 97 | {
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| 98 | // first enumerate the system devices for the specifed class and filter name
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| 99 | CComPtr<ICreateDevEnum> pSysDevEnum = NULL;
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| 100 | hr = CoCreateInstance(CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC_SERVER, IID_ICreateDevEnum, reinterpret_cast<void**>(&pSysDevEnum));
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| 101 |
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| 102 | if (SUCCEEDED(hr))
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| 103 | {
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| 104 | CComPtr<IEnumMoniker> pEnumCat = NULL;
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| 105 | hr = pSysDevEnum->CreateClassEnumerator(clsid, &pEnumCat, 0);
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| 106 |
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| 107 | if (S_OK == hr)
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| 108 | {
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| 109 | IMoniker* pMoniker = NULL;
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| 110 | bool Loop = true;
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| 111 | while ((S_OK == pEnumCat->Next(1, &pMoniker, NULL)) && Loop)
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| 112 | {
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| 113 | IPropertyBag* pPropBag = NULL;
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| 114 | hr = pMoniker->BindToStorage(0, 0, IID_IPropertyBag, reinterpret_cast<void**>(&pPropBag));
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| 115 |
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| 116 | if (SUCCEEDED(hr))
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| 117 | {
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| 118 | VARIANT varName;
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| 119 | VariantInit(&varName);
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| 120 | hr = pPropBag->Read(L"FriendlyName", &varName, 0);
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| 121 | if (SUCCEEDED(hr))
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| 122 | {
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| 123 | if (0 == wcscmp(varName.bstrVal, pName))
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| 124 | {
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| 125 | hr = pMoniker->BindToObject(NULL, NULL, IID_IBaseFilter, reinterpret_cast<void**>(ppFilter));
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| 126 | Loop = false;
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| 127 | }
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| 128 | }
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| 129 |
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| 130 | VariantClear(&varName);
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| 131 |
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| 132 | // contained within a loop, decrement the reference count
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| 133 | SAFE_RELEASE(pPropBag);
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| 134 | }
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| 135 | SAFE_RELEASE(pMoniker);
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| 136 | }
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| 137 | }
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| 138 | }
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| 139 |
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| 140 | // if a filter has been located add it to the graph
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| 141 | if (*ppFilter)
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| 142 | {
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| 143 | hr = pGraph->AddFilter(reinterpret_cast<IBaseFilter*>(*ppFilter), pName);
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| 144 | }
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| 145 | else
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| 146 | {
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| 147 | hr = E_FAIL;
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| 148 | }
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| 149 | }
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| 150 | else
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| 151 | {
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| 152 | hr = E_INVALIDARG;
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| 153 | }
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| 154 |
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| 155 | return hr;
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| 156 | }
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| 157 |
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| 158 | //-------------------------------------------------------------------------------------------------
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| 159 | // GetUnconnectedPin
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| 160 | // Attemptes to locate an unconnected pin on filter
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| 161 | HRESULT CDSUtils::GetUnconnectedPin(IBaseFilter* pFilter, PIN_DIRECTION PinDir, IPin** ppPin)
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| 162 | {
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| 163 | HRESULT hr = S_OK;
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| 164 |
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| 165 | if (pFilter && ppPin)
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| 166 | {
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| 167 | CComPtr<IEnumPins> pEnum = NULL;
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| 168 | IPin* pPin = NULL;
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| 169 |
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| 170 | hr = pFilter->EnumPins(&pEnum);
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| 171 | if (SUCCEEDED(hr))
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| 172 | {
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| 173 | while (pEnum->Next(1, &pPin, NULL) == S_OK)
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| 174 | {
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| 175 | PIN_DIRECTION ThisPinDir;
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| 176 | pPin->QueryDirection(&ThisPinDir);
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| 177 | if (ThisPinDir == PinDir)
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| 178 | {
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| 179 | IPin* pPinTemp = NULL;
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| 180 |
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| 181 | hr = pPin->ConnectedTo(&pPinTemp);
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| 182 | if (SUCCEEDED(hr))
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| 183 | {
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| 184 | SAFE_RELEASE(pPinTemp);
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| 185 | }
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| 186 | else
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| 187 | {
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| 188 | // unconnected, return this pin
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| 189 | *ppPin = pPin;
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| 190 | hr = S_OK;
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| 191 | break;
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| 192 | }
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| 193 | }
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| 194 | SAFE_RELEASE(pPin);
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| 195 | }
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| 196 | }
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| 197 |
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| 198 | if (NULL == *ppPin)
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| 199 | {
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| 200 | // failed to find an unconnected pin
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| 201 | hr = E_FAIL;
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| 202 | }
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| 203 | }
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| 204 | else
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| 205 | {
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| 206 | hr = E_INVALIDARG;
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| 207 | }
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| 208 |
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| 209 | return hr;
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| 210 | }
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| 211 |
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| 212 | //-----------------------------------------------------------------------------
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| 213 | // GetPin
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| 214 | // Find the pin of the specified name on the given filter
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| 215 | // This method leaves an outstanding reference on the pin if successful
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| 216 | HRESULT CDSUtils::GetPin(IBaseFilter* pFilter, const wchar_t* pName, IPin** ppPin)
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| 217 | {
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| 218 | HRESULT hr = S_OK;
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| 219 |
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| 220 | if (pFilter && pName && ppPin)
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| 221 | {
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| 222 | CComPtr<IEnumPins> pIEnumPins = NULL;
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| 223 | hr = pFilter->EnumPins(&pIEnumPins);
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| 224 | if (SUCCEEDED(hr))
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| 225 | {
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| 226 | IPin* pIPin = NULL;
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| 227 | while (S_OK == pIEnumPins->Next(1, &pIPin, NULL))
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| 228 | {
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| 229 | PIN_INFO info = {0};
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| 230 | hr = pIPin->QueryPinInfo(&info);
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| 231 | if (SUCCEEDED(hr))
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| 232 | {
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| 233 | SAFE_RELEASE(info.pFilter);
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| 234 |
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| 235 | if (0 == wcsncmp(info.achName, pName, wcslen(pName)))
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| 236 | {
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| 237 | // matched the pin category
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| 238 | *ppPin = pIPin;
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| 239 | break;
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| 240 | }
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| 241 | }
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| 242 | SAFE_RELEASE(pIPin);
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| 243 | }
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| 244 | }
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| 245 |
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| 246 | if (NULL == *ppPin)
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| 247 | {
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| 248 | // failed to find the named pin
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| 249 | hr = E_FAIL;
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| 250 | }
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| 251 | }
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| 252 | else
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| 253 | {
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| 254 | hr = E_INVALIDARG;
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| 255 | }
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| 256 |
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| 257 | return hr;
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| 258 | }
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| 259 |
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| 260 | //-----------------------------------------------------------------------------
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| 261 | // GetPin
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| 262 | // Find the pin of the specified format type on the given filter
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| 263 | // This method leaves an outstanding reference on the pin if successful
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| 264 | HRESULT CDSUtils::GetPin(IBaseFilter* pFilter, const GUID* pFormat, PIN_DIRECTION PinDir, IPin** ppPin)
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| 265 | {
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| 266 | HRESULT hr = S_OK;
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| 267 |
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| 268 | if (pFilter && pFormat && ppPin)
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| 269 | {
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| 270 | CComPtr<IEnumPins> pIEnumPins = NULL;
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| 271 | hr = pFilter->EnumPins(&pIEnumPins);
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| 272 | if (SUCCEEDED(hr))
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| 273 | {
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| 274 | // find the pin with the specified format
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| 275 | IPin* pIPin = NULL;
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| 276 | while (S_OK == pIEnumPins->Next(1, &pIPin, NULL))
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| 277 | {
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| 278 | // match the pin direction
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| 279 | PIN_DIRECTION pinDir;
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| 280 | pIPin->QueryDirection(&pinDir);
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| 281 | if (pinDir == PinDir)
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| 282 | {
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| 283 | // match pin direction check the first media type returned from the upstream pin
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| 284 | CComPtr<IEnumMediaTypes> pIEnumMT = NULL;
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| 285 | hr = pIPin->EnumMediaTypes(&pIEnumMT);
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| 286 | if (SUCCEEDED(hr))
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| 287 | {
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| 288 | AM_MEDIA_TYPE* pmt = NULL;
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| 289 | hr = pIEnumMT->Next(1, &pmt, NULL);
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| 290 | if (S_OK == hr)
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| 291 | {
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| 292 | if (pmt->majortype == *pFormat)
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| 293 | {
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| 294 | // found the pin with the specified format
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| 295 | *ppPin = pIPin;
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| 296 | DeleteMediaType(pmt);
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| 297 | break;
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| 298 | }
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| 299 | else
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| 300 | {
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| 301 | DeleteMediaType(pmt);
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| 302 | }
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| 303 | }
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| 304 | }
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| 305 | }
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| 306 | SAFE_RELEASE(pIPin);
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| 307 | }
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| 308 |
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| 309 | if (NULL == *ppPin)
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| 310 | {
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| 311 | // failed to find the named pin
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| 312 | hr = E_FAIL;
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| 313 | }
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| 314 | }
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| 315 | }
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| 316 | else
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| 317 | {
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| 318 | hr = E_INVALIDARG;
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| 319 | }
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| 320 |
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| 321 | return hr;
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| 322 | }
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| 323 |
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| 324 | //-----------------------------------------------------------------------------
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| 325 | // ConnectFiltersNamedPin
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| 326 | // Connects two filters using the pin names, if no name is supplied the first
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| 327 | // unconnected pin is used
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| 328 | HRESULT CDSUtils::ConnectFilters(IGraphBuilder* pGraph, IBaseFilter* pUpstream, wchar_t* pUpstreamPinName, IBaseFilter* pDownstream, wchar_t* pDownstreamPinName)
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| 329 | {
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| 330 | HRESULT hr = S_OK;
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| 331 |
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| 332 | if (pUpstream && pDownstream)
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| 333 | {
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| 334 | // get the upstream output pin
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| 335 | CComPtr<IPin> pIPinOutput = NULL;
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| 336 | if (pUpstreamPinName)
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| 337 | {
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| 338 | hr = GetPin(pUpstream, pUpstreamPinName, &pIPinOutput);
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| 339 | }
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| 340 | else
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| 341 | {
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| 342 | hr = GetUnconnectedPin(pUpstream, PINDIR_OUTPUT, &pIPinOutput);
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| 343 | }
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| 344 |
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| 345 | if (SUCCEEDED(hr))
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| 346 | {
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| 347 | // get the downstream input pin
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| 348 | CComPtr<IPin> pIPinInput = NULL;
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| 349 | if (pDownstreamPinName)
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| 350 | {
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| 351 | hr = GetPin(pDownstream, pDownstreamPinName, &pIPinInput);
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| 352 | }
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| 353 | else
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| 354 | {
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| 355 | hr = GetUnconnectedPin(pDownstream, PINDIR_INPUT, &pIPinInput);
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| 356 | }
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| 357 |
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| 358 | if (SUCCEEDED(hr))
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| 359 | {
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| 360 | // connect the pins
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| 361 | hr = pGraph->Connect(pIPinOutput, pIPinInput);
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| 362 | }
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| 363 | }
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| 364 | }
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| 365 | else
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| 366 | {
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| 367 | hr = E_INVALIDARG;
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| 368 | }
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| 369 |
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| 370 | return hr;
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| 371 | }
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| 372 |
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| 373 | //-----------------------------------------------------------------------------
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| 374 | // ConnectFilters
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| 375 | // Connects two filters by finding a pin on the upstream filter with the specified
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| 376 | // major format type, e.g. For connecting an audio pin to a downstream filter
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| 377 | HRESULT CDSUtils::ConnectFilters(IGraphBuilder* pGraph, IBaseFilter* pUpstream, IBaseFilter* pDownstream, const GUID* pFormat)
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| 378 | {
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| 379 | HRESULT hr = S_OK;
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| 380 |
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| 381 | if (pUpstream && pDownstream && pFormat)
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| 382 | {
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| 383 | // find the upstream output pin with the specified format
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| 384 | CComPtr<IPin> pIPinOutput = NULL;
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| 385 | hr = GetPin(pUpstream, pFormat, PINDIR_OUTPUT, &pIPinOutput);
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| 386 | if (SUCCEEDED(hr))
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| 387 | {
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| 388 | // get the downstream input pin
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| 389 | CComPtr<IPin> pIPinInput = NULL;
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| 390 | hr = GetPin(pDownstream, pFormat, PINDIR_INPUT, &pIPinInput);
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| 391 |
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| 392 | if (SUCCEEDED(hr))
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| 393 | {
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| 394 | // connect the pins
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| 395 | hr = pGraph->Connect(pIPinOutput, pIPinInput);
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| 396 | }
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| 397 | }
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| 398 | }
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| 399 | else
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| 400 | {
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| 401 | hr = E_INVALIDARG;
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| 402 | }
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| 403 |
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| 404 | return hr;
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| 405 | }
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| 406 |
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| 407 | //-----------------------------------------------------------------------------
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| 408 | // RenderFilter
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| 409 | // Renders the named output pin of the filter, or the first unconnected output if
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| 410 | // no name is provided
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| 411 | HRESULT CDSUtils::RenderFilter(IGraphBuilder* pGraph, IBaseFilter* pUpstream, wchar_t* pUpstreamPinName)
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| 412 | {
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| 413 | HRESULT hr = S_OK;
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| 414 |
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| 415 | if (pUpstream)
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| 416 | {
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| 417 | CComPtr<IPin> pIPinOutput = NULL;
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| 418 | if (pUpstreamPinName)
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| 419 | {
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| 420 | hr = GetPin(pUpstream, pUpstreamPinName, &pIPinOutput);
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| 421 | }
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| 422 | else
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| 423 | {
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| 424 | hr = GetUnconnectedPin(pUpstream, PINDIR_OUTPUT, &pIPinOutput);
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| 425 | }
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| 426 |
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| 427 | if (SUCCEEDED(hr))
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| 428 | {
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| 429 | hr = pGraph->Render(pIPinOutput);
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| 430 | }
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| 431 | }
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| 432 | else
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| 433 | {
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| 434 | hr = E_INVALIDARG;
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| 435 | }
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| 436 |
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| 437 | return hr;
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| 438 | }
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| 439 |
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| 440 | //-----------------------------------------------------------------------------
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| 441 | // DisconnectAllPins
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| 442 | // Disconnect all the pins of the filters in a graph
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| 443 | HRESULT CDSUtils::DisconnectAllPins(IGraphBuilder* pGraph)
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| 444 | {
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| 445 | HRESULT hr = S_OK;
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| 446 |
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| 447 | if (pGraph)
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| 448 | {
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| 449 | CComPtr<IEnumFilters> pIEnumFilters = NULL;
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| 450 | hr = pGraph->EnumFilters(&pIEnumFilters);
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| 451 | if (SUCCEEDED(hr))
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| 452 | {
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| 453 | IBaseFilter* pFilter = NULL;
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| 454 | while (S_OK == pIEnumFilters->Next(1, &pFilter, NULL))
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| 455 | {
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---|
| 456 | CComPtr<IEnumPins> pIEnumPins = NULL;
|
---|
| 457 | hr = pFilter->EnumPins(&pIEnumPins);
|
---|
| 458 | if (SUCCEEDED(hr))
|
---|
| 459 | {
|
---|
| 460 | IPin* pIPin = NULL;
|
---|
| 461 | while (S_OK == pIEnumPins->Next(1, &pIPin, NULL))
|
---|
| 462 | {
|
---|
| 463 | IPin* pIPinConnection = NULL;
|
---|
| 464 | if (S_OK == pIPin->ConnectedTo(&pIPinConnection))
|
---|
| 465 | {
|
---|
| 466 | // pins are connected, to disconnect filters, both pins must be disconnected
|
---|
| 467 | hr = pGraph->Disconnect(pIPin);
|
---|
| 468 | hr = pGraph->Disconnect(pIPinConnection);
|
---|
| 469 | SAFE_RELEASE(pIPinConnection);
|
---|
| 470 | }
|
---|
| 471 | SAFE_RELEASE(pIPin);
|
---|
| 472 | }
|
---|
| 473 | }
|
---|
| 474 | SAFE_RELEASE(pFilter);
|
---|
| 475 | }
|
---|
| 476 | }
|
---|
| 477 | }
|
---|
| 478 | else
|
---|
| 479 | {
|
---|
| 480 | hr = E_INVALIDARG;
|
---|
| 481 | }
|
---|
| 482 |
|
---|
| 483 | return hr;
|
---|
| 484 | }
|
---|
| 485 |
|
---|
| 486 | //-----------------------------------------------------------------------------
|
---|
| 487 | // FindFilterInterface
|
---|
| 488 | // Attempt to locate the specified interface
|
---|
| 489 | HRESULT CDSUtils::FindFilterInterface(IBaseFilter* pFilter, const IID& riid, void** ppvInterface)
|
---|
| 490 | {
|
---|
| 491 | HRESULT hr = S_OK;
|
---|
| 492 |
|
---|
| 493 | if (pFilter && ppvInterface)
|
---|
| 494 | {
|
---|
| 495 | hr = pFilter->QueryInterface(riid, ppvInterface);
|
---|
| 496 | }
|
---|
| 497 | else
|
---|
| 498 | {
|
---|
| 499 | hr = E_INVALIDARG;
|
---|
| 500 | }
|
---|
| 501 |
|
---|
| 502 | return hr;
|
---|
| 503 | }
|
---|
| 504 |
|
---|
| 505 | //-----------------------------------------------------------------------------
|
---|
| 506 | // FindPinInterface
|
---|
| 507 | // Attempt to locate the interface on the named pin or on the first pin if no
|
---|
| 508 | // name is provided.
|
---|
| 509 | HRESULT CDSUtils::FindPinInterface(IBaseFilter* pFilter, wchar_t* pName, const IID& riid, void** ppvInterface)
|
---|
| 510 | {
|
---|
| 511 | HRESULT hr = S_OK;
|
---|
| 512 |
|
---|
| 513 | if (pFilter && ppvInterface)
|
---|
| 514 | {
|
---|
| 515 | CComPtr<IPin> pIPin = NULL;
|
---|
| 516 | if (pName)
|
---|
| 517 | {
|
---|
| 518 | hr = GetPin(pFilter, pName, &pIPin);
|
---|
| 519 | }
|
---|
| 520 | else
|
---|
| 521 | {
|
---|
| 522 | CComPtr<IEnumPins> pIEnumPins = NULL;
|
---|
| 523 | hr = pFilter->EnumPins(&pIEnumPins);
|
---|
| 524 | if (SUCCEEDED(hr))
|
---|
| 525 | {
|
---|
| 526 | hr = pIEnumPins->Next(1, &pIPin, NULL);
|
---|
| 527 | }
|
---|
| 528 | }
|
---|
| 529 |
|
---|
| 530 | if (SUCCEEDED(hr))
|
---|
| 531 | {
|
---|
| 532 | hr = pIPin->QueryInterface(riid, ppvInterface);
|
---|
| 533 | }
|
---|
| 534 | }
|
---|
| 535 | else
|
---|
| 536 | {
|
---|
| 537 | hr = E_INVALIDARG;
|
---|
| 538 | }
|
---|
| 539 |
|
---|
| 540 | return hr;
|
---|
| 541 | }
|
---|
| 542 |
|
---|
| 543 | //-----------------------------------------------------------------------------
|
---|
| 544 | // FindPinInterface
|
---|
| 545 | // Attempt to locate the interface on the pin with the specified format or on the first pin if no
|
---|
| 546 | // format is provided.
|
---|
| 547 | HRESULT CDSUtils::FindPinInterface(IBaseFilter* pFilter, const GUID* pFormat, PIN_DIRECTION PinDir, const IID& riid, void** ppvInterface)
|
---|
| 548 | {
|
---|
| 549 | HRESULT hr = S_OK;
|
---|
| 550 |
|
---|
| 551 | if (pFilter && ppvInterface)
|
---|
| 552 | {
|
---|
| 553 | CComPtr<IPin> pIPin = NULL;
|
---|
| 554 | if (pFormat)
|
---|
| 555 | {
|
---|
| 556 | hr = GetPin(pFilter, pFormat, PinDir, &pIPin);
|
---|
| 557 | }
|
---|
| 558 | else
|
---|
| 559 | {
|
---|
| 560 | CComPtr<IEnumPins> pIEnumPins = NULL;
|
---|
| 561 | hr = pFilter->EnumPins(&pIEnumPins);
|
---|
| 562 | if (SUCCEEDED(hr))
|
---|
| 563 | {
|
---|
| 564 | hr = pIEnumPins->Next(1, &pIPin, NULL);
|
---|
| 565 | }
|
---|
| 566 | }
|
---|
| 567 |
|
---|
| 568 | if (SUCCEEDED(hr))
|
---|
| 569 | {
|
---|
| 570 | hr = pIPin->QueryInterface(riid, ppvInterface);
|
---|
| 571 | }
|
---|
| 572 | }
|
---|
| 573 | else
|
---|
| 574 | {
|
---|
| 575 | hr = E_INVALIDARG;
|
---|
| 576 | }
|
---|
| 577 |
|
---|
| 578 | return hr;
|
---|
| 579 | }
|
---|
| 580 |
|
---|
| 581 | //-----------------------------------------------------------------------------
|
---|
| 582 | // AddGraphToRot
|
---|
| 583 | // Adds a DirectShow filter graph to the Running Object Table,
|
---|
| 584 | // allowing GraphEdit to "spy" on a remote filter graph.
|
---|
| 585 | HRESULT CDSUtils::AddGraphToRot(IUnknown* pUnkGraph, DWORD* pdwRegister)
|
---|
| 586 | {
|
---|
| 587 | HRESULT hr = S_OK;
|
---|
| 588 |
|
---|
| 589 | if (pUnkGraph && pdwRegister)
|
---|
| 590 | {
|
---|
| 591 | CComPtr<IRunningObjectTable> pROT = NULL;
|
---|
| 592 | hr = GetRunningObjectTable(0, &pROT);
|
---|
| 593 | if (SUCCEEDED(hr))
|
---|
| 594 | {
|
---|
| 595 | WCHAR wsz[128];
|
---|
| 596 | StringCchPrintfW(wsz, 128, L"FilterGraph %08x pid %08x\0", (DWORD_PTR)pUnkGraph, GetCurrentProcessId());
|
---|
| 597 |
|
---|
| 598 | CComPtr<IMoniker> pMoniker = NULL;
|
---|
| 599 | hr = CreateItemMoniker(L"!", wsz, &pMoniker);
|
---|
| 600 | if(SUCCEEDED(hr))
|
---|
| 601 | {
|
---|
| 602 | // Use the ROTFLAGS_REGISTRATIONKEEPSALIVE to ensure a strong reference
|
---|
| 603 | // to the object. Using this flag will cause the object to remain
|
---|
| 604 | // registered until it is explicitly revoked with the Revoke() method.
|
---|
| 605 | //
|
---|
| 606 | // Not using this flag means that if GraphEdit remotely connects
|
---|
| 607 | // to this graph and then GraphEdit exits, this object registration
|
---|
| 608 | // will be deleted, causing future attempts by GraphEdit to fail until
|
---|
| 609 | // this application is restarted or until the graph is registered again.
|
---|
| 610 | hr = pROT->Register(ROTFLAGS_REGISTRATIONKEEPSALIVE, pUnkGraph, pMoniker, pdwRegister);
|
---|
| 611 | }
|
---|
| 612 | }
|
---|
| 613 | }
|
---|
| 614 | else
|
---|
| 615 | {
|
---|
| 616 | hr = E_INVALIDARG;
|
---|
| 617 | }
|
---|
| 618 |
|
---|
| 619 | return hr;
|
---|
| 620 | }
|
---|
| 621 |
|
---|
| 622 | //-----------------------------------------------------------------------------
|
---|
| 623 | // RemoveGraphFromRot
|
---|
| 624 | // Removes a filter graph from the Running Object Table
|
---|
| 625 | void CDSUtils::RemoveGraphFromRot(DWORD pdwRegister)
|
---|
| 626 | {
|
---|
| 627 | CComPtr<IRunningObjectTable> pROT = NULL;
|
---|
| 628 |
|
---|
| 629 | if (SUCCEEDED(GetRunningObjectTable(0, &pROT)))
|
---|
| 630 | {
|
---|
| 631 | pROT->Revoke(pdwRegister);
|
---|
| 632 | }
|
---|
| 633 | }
|
---|
| 634 |
|
---|
| 635 | //------------------------------------------------------------------------------------
|
---|
| 636 | // CRegUtils - Registry utility class
|
---|
| 637 | //------------------------------------------------------------------------------------
|
---|
| 638 | //------------------------------------------------------------------------------------
|
---|
| 639 | // Constructor
|
---|
| 640 | //
|
---|
| 641 | CRegUtils::CRegUtils()
|
---|
| 642 | : m_hKey(NULL)
|
---|
| 643 | {
|
---|
| 644 | }
|
---|
| 645 |
|
---|
| 646 | //------------------------------------------------------------------------------------
|
---|
| 647 | // Destructor
|
---|
| 648 | //
|
---|
| 649 | CRegUtils::~CRegUtils()
|
---|
| 650 | {
|
---|
| 651 | Close();
|
---|
| 652 | }
|
---|
| 653 |
|
---|
| 654 | //------------------------------------------------------------------------------------
|
---|
| 655 | // Open
|
---|
| 656 | // Opens the specified subkey
|
---|
| 657 | LONG CRegUtils::Open(LPCTSTR lpSubKey)
|
---|
| 658 | {
|
---|
| 659 | Close();
|
---|
| 660 | m_subKeyName = "Software\\Blackmagic Design\\Samples\\";
|
---|
| 661 | m_subKeyName += lpSubKey;
|
---|
| 662 | return RegOpenKeyEx(HKEY_LOCAL_MACHINE, m_subKeyName.c_str(), 0, KEY_ALL_ACCESS, &m_hKey);
|
---|
| 663 | }
|
---|
| 664 |
|
---|
| 665 | //------------------------------------------------------------------------------------
|
---|
| 666 | // Create
|
---|
| 667 | // Creates the specified subkey
|
---|
| 668 | LONG CRegUtils::Create(LPCTSTR lpSubKey)
|
---|
| 669 | {
|
---|
| 670 | Close();
|
---|
| 671 | m_subKeyName = "Software\\Blackmagic Design\\Samples\\";
|
---|
| 672 | m_subKeyName += lpSubKey;
|
---|
| 673 | return RegCreateKeyEx(HKEY_LOCAL_MACHINE, m_subKeyName.c_str(), 0, NULL, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &m_hKey, NULL);
|
---|
| 674 | }
|
---|
| 675 |
|
---|
| 676 | //------------------------------------------------------------------------------------
|
---|
| 677 | // Close
|
---|
| 678 | // Closes the subkey
|
---|
| 679 | void CRegUtils::Close()
|
---|
| 680 | {
|
---|
| 681 | RegCloseKey(m_hKey);
|
---|
| 682 | m_hKey = NULL;
|
---|
| 683 | m_subKeyName.empty();
|
---|
| 684 | }
|
---|
| 685 |
|
---|
| 686 | //------------------------------------------------------------------------------------
|
---|
| 687 | // SetString
|
---|
| 688 | // Set the key for the named value of type string
|
---|
| 689 | LONG CRegUtils::SetString(LPCTSTR valueName, const BYTE* lpData, DWORD cbData)
|
---|
| 690 | {
|
---|
| 691 | return RegSetValueEx(m_hKey, valueName, 0, REG_SZ, lpData, cbData);
|
---|
| 692 | }
|
---|
| 693 |
|
---|
| 694 | //------------------------------------------------------------------------------------
|
---|
| 695 | // GetString
|
---|
| 696 | // Query the key for the named value of type string
|
---|
| 697 | LONG CRegUtils::GetString(LPCTSTR valueName, LPBYTE lpData, DWORD cbData)
|
---|
| 698 | {
|
---|
| 699 | LONG ret = ERROR_SUCCESS;
|
---|
| 700 | DWORD size = cbData, type = 0;
|
---|
| 701 | ret = RegQueryValueEx(m_hKey, valueName, NULL, &type, lpData, &size);
|
---|
| 702 | if ((size != cbData) || (REG_SZ != type))
|
---|
| 703 | {
|
---|
| 704 | ret = ERROR_INVALID_PARAMETER;
|
---|
| 705 | }
|
---|
| 706 | return ret;
|
---|
| 707 | }
|
---|
| 708 |
|
---|
| 709 | //------------------------------------------------------------------------------------
|
---|
| 710 | // SetBinary
|
---|
| 711 | // Set the key for the named value of type binary
|
---|
| 712 | LONG CRegUtils::SetBinary(LPCTSTR valueName, const BYTE* lpData, DWORD cbData)
|
---|
| 713 | {
|
---|
| 714 | return RegSetValueEx(m_hKey, valueName, 0, REG_BINARY, lpData, cbData);
|
---|
| 715 | }
|
---|
| 716 |
|
---|
| 717 | //------------------------------------------------------------------------------------
|
---|
| 718 | // GetBinary
|
---|
| 719 | // Query the key for the named value of type binary
|
---|
| 720 | LONG CRegUtils::GetBinary(LPCTSTR valueName, LPBYTE lpData, DWORD cbData)
|
---|
| 721 | {
|
---|
| 722 | LONG ret = ERROR_SUCCESS;
|
---|
| 723 | DWORD size = cbData, type = 0;
|
---|
| 724 | ret = RegQueryValueEx(m_hKey, valueName, NULL, &type, lpData, &size);
|
---|
| 725 | if ((size != cbData) || (REG_BINARY != type))
|
---|
| 726 | {
|
---|
| 727 | ret = ERROR_INVALID_PARAMETER;
|
---|
| 728 | }
|
---|
| 729 | return ret;
|
---|
| 730 | }
|
---|
| 731 |
|
---|
| 732 | //------------------------------------------------------------------------------------
|
---|
| 733 | // SetDword
|
---|
| 734 | // Set the key for the named value of type DWORD
|
---|
| 735 | LONG CRegUtils::SetDword(LPCTSTR valueName, const BYTE* lpData, DWORD cbData)
|
---|
| 736 | {
|
---|
| 737 | return RegSetValueEx(m_hKey, valueName, 0, REG_DWORD, lpData, cbData);
|
---|
| 738 | }
|
---|
| 739 |
|
---|
| 740 | //------------------------------------------------------------------------------------
|
---|
| 741 | // GetDword
|
---|
| 742 | // Query the key for the named value of type DWORD
|
---|
| 743 | LONG CRegUtils::GetDword(LPCTSTR valueName, LPBYTE lpData, DWORD cbData)
|
---|
| 744 | {
|
---|
| 745 | LONG ret = ERROR_SUCCESS;
|
---|
| 746 | DWORD size = cbData, type = 0;
|
---|
| 747 | ret = RegQueryValueEx(m_hKey, valueName, NULL, &type, lpData, &size);
|
---|
| 748 | if ((size != cbData) || (REG_DWORD != type))
|
---|
| 749 | {
|
---|
| 750 | ret = ERROR_INVALID_PARAMETER;
|
---|
| 751 | }
|
---|
| 752 | return ret;
|
---|
| 753 | }
|
---|
| 754 |
|
---|
| 755 | //------------------------------------------------------------------------------------
|
---|
| 756 | // CUtils - utility class
|
---|
| 757 | //------------------------------------------------------------------------------------
|
---|
| 758 | //-----------------------------------------------------------------------------
|
---|
| 759 | // GetBMIHeader
|
---|
| 760 | // Returns the BITMAPINFOHEADER structure from media type format extension
|
---|
| 761 | BITMAPINFOHEADER* CUtils::GetBMIHeader(const AM_MEDIA_TYPE* pamt)
|
---|
| 762 | {
|
---|
| 763 | BITMAPINFOHEADER* pbmih = NULL;
|
---|
| 764 |
|
---|
| 765 | if (pamt)
|
---|
| 766 | {
|
---|
| 767 | if (FORMAT_VideoInfo == pamt->formattype)
|
---|
| 768 | {
|
---|
| 769 | VIDEOINFOHEADER* pvih = reinterpret_cast<VIDEOINFOHEADER*>(pamt->pbFormat);
|
---|
| 770 | ASSERT(sizeof(VIDEOINFOHEADER) <= pamt->cbFormat);
|
---|
| 771 | pbmih = &pvih->bmiHeader;
|
---|
| 772 | }
|
---|
| 773 | else if (FORMAT_VideoInfo2 == pamt->formattype)
|
---|
| 774 | {
|
---|
| 775 | VIDEOINFOHEADER2* pvih = reinterpret_cast<VIDEOINFOHEADER2*>(pamt->pbFormat);
|
---|
| 776 | ASSERT(sizeof(VIDEOINFOHEADER2) <= pamt->cbFormat);
|
---|
| 777 | pbmih = &pvih->bmiHeader;
|
---|
| 778 | }
|
---|
| 779 | }
|
---|
| 780 |
|
---|
| 781 | return pbmih;
|
---|
| 782 | }
|
---|
| 783 |
|
---|
| 784 | //-----------------------------------------------------------------------------
|
---|
| 785 | // GetBMIHeader
|
---|
| 786 | // Returns the BITMAPINFOHEADER structure from media type format extension
|
---|
| 787 | BITMAPINFOHEADER* CUtils::GetBMIHeader(const CMediaType& mt)
|
---|
| 788 | {
|
---|
| 789 | BITMAPINFOHEADER* pbmih = NULL;
|
---|
| 790 |
|
---|
| 791 | if (FORMAT_VideoInfo == mt.formattype)
|
---|
| 792 | {
|
---|
| 793 | VIDEOINFOHEADER* pvih = reinterpret_cast<VIDEOINFOHEADER*>(mt.pbFormat);
|
---|
| 794 | ASSERT(sizeof(VIDEOINFOHEADER) <= mt.cbFormat);
|
---|
| 795 | pbmih = &pvih->bmiHeader;
|
---|
| 796 | }
|
---|
| 797 | else if (FORMAT_VideoInfo2 == mt.formattype)
|
---|
| 798 | {
|
---|
| 799 | VIDEOINFOHEADER2* pvih = reinterpret_cast<VIDEOINFOHEADER2*>(mt.pbFormat);
|
---|
| 800 | ASSERT(sizeof(VIDEOINFOHEADER2) <= mt.cbFormat);
|
---|
| 801 | pbmih = &pvih->bmiHeader;
|
---|
| 802 | }
|
---|
| 803 |
|
---|
| 804 | return pbmih;
|
---|
| 805 | }
|
---|
| 806 |
|
---|
| 807 | //-----------------------------------------------------------------------------
|
---|
| 808 | // GetAvgTimePerFrame
|
---|
| 809 | // Returns the average time per frame from media type format extension
|
---|
| 810 | REFERENCE_TIME CUtils::GetAvgTimePerFrame(const AM_MEDIA_TYPE* pamt)
|
---|
| 811 | {
|
---|
| 812 | REFERENCE_TIME rtAvgTimePerFrame = 0;
|
---|
| 813 |
|
---|
| 814 | if (pamt)
|
---|
| 815 | {
|
---|
| 816 | if (FORMAT_VideoInfo == pamt->formattype)
|
---|
| 817 | {
|
---|
| 818 | VIDEOINFOHEADER* pvih = reinterpret_cast<VIDEOINFOHEADER*>(pamt->pbFormat);
|
---|
| 819 | ASSERT(sizeof(VIDEOINFOHEADER) <= pamt->cbFormat);
|
---|
| 820 | rtAvgTimePerFrame = pvih->AvgTimePerFrame;
|
---|
| 821 | }
|
---|
| 822 | else if (FORMAT_VideoInfo2 == pamt->formattype)
|
---|
| 823 | {
|
---|
| 824 | VIDEOINFOHEADER2* pvih = reinterpret_cast<VIDEOINFOHEADER2*>(pamt->pbFormat);
|
---|
| 825 | ASSERT(sizeof(VIDEOINFOHEADER2) <= pamt->cbFormat);
|
---|
| 826 | rtAvgTimePerFrame = pvih->AvgTimePerFrame;
|
---|
| 827 | }
|
---|
| 828 | }
|
---|
| 829 |
|
---|
| 830 | return rtAvgTimePerFrame;
|
---|
| 831 | }
|
---|
| 832 |
|
---|
| 833 | //------------------------------------------------------------------------------------
|
---|
| 834 | // GetImageSize
|
---|
| 835 | // Calculates the image size
|
---|
| 836 | unsigned long CUtils::GetImageSize(BITMAPINFOHEADER* pbmih)
|
---|
| 837 | {
|
---|
| 838 | unsigned long dwImageSize = 0;
|
---|
| 839 |
|
---|
| 840 | if (pbmih)
|
---|
| 841 | {
|
---|
| 842 | switch (pbmih->biCompression)
|
---|
| 843 | {
|
---|
| 844 | default:
|
---|
| 845 | case BI_RGB:
|
---|
| 846 | dwImageSize = (pbmih->biWidth * abs(pbmih->biHeight) * pbmih->biBitCount) >> 3;
|
---|
| 847 | break;
|
---|
| 848 |
|
---|
| 849 | case 'YVYU':
|
---|
| 850 | case '2YUY':
|
---|
| 851 | dwImageSize = (pbmih->biWidth * abs(pbmih->biHeight) * 16) >> 3;
|
---|
| 852 | break;
|
---|
| 853 | }
|
---|
| 854 | }
|
---|
| 855 |
|
---|
| 856 | return dwImageSize;
|
---|
| 857 | }
|
---|
| 858 |
|
---|