今天要用DirectShow做一個音頻採集程序，結果遇到的第一個問題便是開發環境的搭建，需要幾步準備。
1）下載支持DirectShow的SDK
2）將SDK中的include和lib目錄配置到VC6.0下（一般SDK在安裝過程中會自己配置）
3）編譯SDK中samples中提供的項目，得到Strmbasd.lib winmm.lib庫文件，這個要在新建的DirectShow工程中引用
第一步，我爲了能夠開發DirectShow程序，曾想過用VC6.0或者VS2005，只要這兩個有一個配置成功了，我便用哪個，因爲我對開發環境並不關注。
我先後下載並安裝了微軟提供的兩個SDK，一個是Windows.Server.2003.Platform.SDK.Feb.2003.Edition-QUANTUM，另一個是DXSDK_Aug08。這兩個到後來我沒有配置成功，所以這裏略過，我沒配置成功不代表別人就配置不成。
我最後下載了成功配置的SDK，這就是dx9sdk，在百度裏搜索“DirectX9.0b SDK Summer 2003”應該可以搜到並下載。安裝之後，果然有這個目錄：<SDK root>/SAMPLES/C++/DirectShow/BASECLASSES
下面，進入第二步。
第二步，打開VC6.0
Tools->Options->Directories
Include - 添加<SDK root>/Include
Lib - 添加<SDK root>/Lib
- 添加<SDK root>/SAMPLES/C++/DirectShow/BASECLASSES/DEBUG //這個目錄在第3步之後會出現的
第三步，對於<SDK root>/SAMPLES/C++/DirectShow/BASECLASSES的編譯，我要轉引網上一篇我十分感激的文章：
轉引開始：
我也是個初學者，要是以下的文章有什麼錯誤，請給我留言，謝謝！
[1] 請確保您的機子上已經安裝了VS 2005和DirectX 9.0b SDK。DX9.0 SDK的下載地址就不寫了，自己在網上找吧！（我的DX9.0安裝在D盤根目錄下）
[2] 首先編譯SamplesC++DirectShowBaseClasses目錄下的baseclasses.sln以得到兩個庫文件（strbase.lib和strmbase.lib）。以下介紹的主要是如何修改編譯中的錯誤，這也是衆多文章中沒有敘述的部分。自己寫的，有些囉嗦，請原諒哦！
進入DirectShow的安裝目錄，找到SamplesC++DirectShowBaseClasses，雙擊baseclasses.sln打開該解決方案。首先看到的會是Visual Studio的轉換向導，不用管它，直接Next到Finish。
點擊F5，調試運行，你會見到下面的錯誤（至少我編譯的時候就是這樣的結果）：
1>------ Build started: Project: BaseClasses, Configuration: Debug Unicode Win32 ------
1>Compiling...
1>dllentry.cpp
1>D:Program FilesMicrosoft Visual Studio 8VCPlatformSDKincludewinnt.h(222) : error C2146: syntax error : missing ';' before identifier 'PVOID64'
1>D:Program FilesMicrosoft Visual Studio 8VCPlatformSDKincludewinnt.h(222) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>D:Program FilesMicrosoft Visual Studio 8VCPlatformSDKincludewinnt.h(5940) : error C2146: syntax error : missing ';' before identifier 'Buffer'
1>D:Program FilesMicrosoft Visual Studio 8VCPlatformSDKincludewinnt.h(5940) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>D:Program FilesMicrosoft Visual Studio 8VCPlatformSDKincludewinnt.h(5940) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>d:DXSDKSamplesC++DirectShowBaseClassesctlutil.h(278) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>d:DXSDKincludeuuids.h : warning C4819: The file contains a character that cannot be represented in the current code page (936). Save the file in Unicode format to prevent data loss
1>Build log was saved at "file://d:DXSDKSamplesC++DirectShowBaseClassesDebug_UnicodeBuildLog.htm"
1>BaseClasses - 6 error(s), 1 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
沒辦法，改錯。（網上老外的文章中說過，不過也不明白什麼意思！）
雙擊1>D:Program FilesMicrosoft Visual Studio 8VCPlatformSDKincludewinnt.h(222) : error C2146: syntax error : missing ';' before identifier 'PVOID64' 跳轉到出錯的位置。
你會見到錯誤語句：typedef void * POINTER_64 PVOID64;
這樣的定義，VS2005中是不支持的。將其修改爲兩條語句：
#define POINTER_64 __ptr64
typedef void *PVOID;
typedef void *POINTER_64 PVOID64;
然後調試運行，會發現還有1條錯誤：
1>------ Build started: Project: BaseClasses, Configuration: Debug Unicode Win32 ------
1>Compiling...
1>dllentry.cpp
1>d:DXSDKSamplesC++DirectShowBaseClassesctlutil.h(278) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>d:DXSDKincludeuuids.h : warning C4819: The file contains a character that cannot be represented in the current code page (936). Save the file in Unicode format to prevent data loss
1>Build log was saved at "file://d:DXSDKSamplesC++DirectShowBaseClassesDebug_UnicodeBuildLog.htm"
1>BaseClasses - 1 error(s), 1 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
只有繼續改啦！雙擊1>d:DXSDKSamplesC++DirectShowBaseClassesctlutil.h(278) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int 跳轉到出錯的位置。
你會見到錯誤語句：operator=(LONG);
只是沒有返回值嘛！給它加一個就行了，將其改爲：LONG operator=(LONG);
再次調試運行，哇塞！更多錯誤：
1>------ Build started: Project: BaseClasses, Configuration: Debug Unicode Win32 ------
1>Compiling...
1>wxdebug.cpp
1>.wxdebug.cpp(534) : warning C4996: '_vsnwprintf' was declared deprecated
1> D:Program FilesMicrosoft Visual Studio 8VCincludestdio.h(450) : see declaration of '_vsnwprintf'
1> Message: 'This function or variable may be unsafe. Consider using _vsnwprintf_s instead. To disable deprecation, use _CRT_SECURE_NO_DEPRECATE. See _disibledevent="file:///d:DXSDKSamplesC++DirectShowBaseClassesDebug_UnicodeBuildLog.htm">file://d:DXSDKSamplesC++DirectShowBaseClassesDebug_UnicodeBuildLog.htm"
1>BaseClasses - 10 error(s), 2 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
有錯就改啦！雙擊1>.wxdebug.cpp(567) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int 跳到出錯位置。
你會見到出錯語句：static g_dwLastRefresh = 0;
靜態類型變量有這麼定義的嗎？總得給個類型吧！將其改爲：static DWORD g_dwLastRefresh = 0;爲什麼類型指定爲DWORD？看程序中的語句就明白了——保證相同類型的變量進行運算。
再次調試運行：
1>------ Build started: Project: BaseClasses, Configuration: Debug Unicode Win32 ------
1>Compiling...
1>winutil.cpp
1>.winutil.cpp(2104) : error C2065: 'Count' : undeclared identifier
1>.winutil.cpp(2106) : error C2228: left of '.peRed' must have class/struct/union
1>.winutil.cpp(2106) : error C2228: left of '.peRed' must have class/struct/union
1>.winutil.cpp(2107) : error C2228: left of '.peGreen' must have class/struct/union
1>.winutil.cpp(2107) : error C2228: left of '.peGreen' must have class/struct/union
1>.winutil.cpp(2108) : error C2228: left of '.peBlue' must have class/struct/union
1>.winutil.cpp(2108) : error C2228: left of '.peBlue' must have class/struct/union
1>.winutil.cpp(2124) : error C2228: left of '.peFlags' must have class/struct/union
1>outputq.cpp
1>.outputq.cpp(664) : error C2065: 'iDone' : undeclared identifier
1>Generating Code...
1>Build log was saved at "file://d:DXSDKSamplesC++DirectShowBaseClassesDebug_UnicodeBuildLog.htm"
1>BaseClasses - 9 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
錯誤少了一個哦！繼續努力！雙擊1>.winutil.cpp(2104) : error C2065: 'Count' : undeclared identifier跳到出錯位置。
你會見到出錯語句：for (Count = 0;Count < Result;Count++) {
Count沒有定義？看該語句上面的語句：
for (UINT Count = 0;Count < Result;Count++) {
if (SystemEntries[Count].peRed != pEntry[Count].peRed ||
SystemEntries[Count].peGreen != pEntry[Count].peGreen ||
SystemEntries[Count].peBlue != pEntry[Count].peBlue) {
bIdentityPalette = FALSE;
}
}
// And likewise compare against the last ten entries
Result = GetSystemPaletteEntries(hdc,PalHiStart,PalLoCount,SystemEntries);
看到了吧！Count是在循環體內定義的變量，出了循環之後就“生命”over了。所以將它定義到外面去。將以上的語句改爲：
UINT Count = 0;
for (Count = 0;Count < Result;Count++) {
if (SystemEntries[Count].peRed != pEntry[Count].peRed ||
SystemEntries[Count].peGreen != pEntry[Count].peGreen ||
SystemEntries[Count].peBlue != pEntry[Count].peBlue) {
bIdentityPalette = FALSE;
}
}
// And likewise compare against the last ten entries
Result = GetSystemPaletteEntries(hdc,PalHiStart,PalLoCount,SystemEntries);
再次調試運行：
1>------ Build started: Project: BaseClasses, Configuration: Debug Unicode Win32 ------
1>Compiling...
1>winutil.cpp
1>outputq.cpp
1>.outputq.cpp(664) : error C2065: 'iDone' : undeclared identifier
1>Generating Code...
1>Build log was saved at "file://d:DXSDKSamplesC++DirectShowBaseClassesDebug_UnicodeBuildLog.htm"
1>BaseClasses - 1 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
不錯哦！錯誤剩下一個了！再改，雙擊1>.outputq.cpp(664) : error C2065: 'iDone' : undeclared identifier
跳到出錯位置。
你會見到出錯語句：*nSamplesProcessed = iDone - iLost;
iDone沒有定義？OK，繼續看它上面的語句：
// Loop processing the samples in batches
LONG iLost = 0;
for (long iDone = 0;
iDone < nSamples || (m_nBatched != 0 && m_bSendAnyway);
) {
// ...
同樣的，將iDone的定義放到循環體的外面去，改爲：
// Loop processing the samples in batches
LONG iLost = 0;
long iDone = 0;
for (iDone = 0;
iDone < nSamples || (m_nBatched != 0 && m_bSendAnyway);
) {
// ...
改完了以後，再次調試運行：
1>------ Build started: Project: BaseClasses, Configuration: Debug Unicode Win32 ------
1>Compiling...
1>outputq.cpp
1>Creating library...
1>Build log was saved at "file://d:DXSDKSamplesC++DirectShowBaseClassesDebug_UnicodeBuildLog.htm"
1>BaseClasses - 0 error(s), 0 warning(s)
========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========
總算見到succeeded了，呵呵！你調出來了嗎？
轉引結束 原文地址如下：http://blog.chinaunix.net/u1/33950/showart_716130.html
上面的轉引，講述瞭如何編譯出我們需要的庫文件Strmbasd.lib，按照轉引上的方法生成了這個庫文件後，在VC6.0的Project->Setting->Link
添加Strmbasd.lib winmm.lib
以上準備結束之後，就可以編譯我們的DirectShow程序啦~~~
一個參考源代碼，可以用來測試
#include <Dshow.h>
#include <Streams.h>
#include <stdio.h>
void main(void)
{
IGraphBuilder *pGraph = NULL;
IMediaControl *pControl = NULL;
IMediaEvent *pEvent = NULL;
// Initialize the COM library.
HRESULT hr = CoInitialize(NULL);
if (FAILED(hr))
{
printf("ERROR - Could not initialize COM library");
return;
}
// Create the filter graph manager and query for interfaces.
hr = CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER,
IID_IGraphBuilder, (void **)&pGraph);
if (FAILED(hr))
{
printf("ERROR - Could not create the Filter Graph Manager.");
return;
}
hr = pGraph->QueryInterface(IID_IMediaControl, (void **)&pControl);
hr = pGraph->QueryInterface(IID_IMediaEvent, (void **)&pEvent);
// Build the graph. IMPORTANT: Change this string to a file on your system.
// hr = pGraph->RenderFile(L"C://Example.avi", NULL);
hr = pGraph->RenderFile(L"E://DX90SDK//Samples//Media//chicken.wmv", NULL); // 打開一個媒體文件
if (SUCCEEDED(hr))
{
// Run the graph.
hr = pControl->Run();
if (SUCCEEDED(hr))
{
// Wait for completion.
long evCode;
pEvent->WaitForCompletion(INFINITE, &evCode);
// Note: Do not use INFINITE in a real application, because it
// can block indefinitely.
}
}
pControl->Release();
pEvent->Release();
pGraph->Release();
CoUninitialize();
}
完。
本文來自CSDN博客，轉載請標明出處：http://blog.csdn.net/out_of_memory/archive/2008/12/10/3486726.aspx