您的位置：首页 > 其它

调试Windows Media SDK时出现的异常中断

2008-01-03 20:50 309 查看

调试Windows Media SDK时出现的异常中断

Article last modified on 2002-5-20----------------------------------------------------------------The information in this article applies to:- Microsoft Windows Media Format SDK 7.0- Microsoft Visual C++, 32-bit Editions, version 6.0, SP5----------------------------------------------------------------Table of Contents[/b]调试Windows Media SDK时出现的异常中断... 1现象：... 1 原因：... 3使用过Windows Media SDK的兄弟们，几乎都应该遇到过这种问题。我好像没有看到微软对此有所表示，不知道有没有专门针对于此的KB文章。

现象：

当调试至下面代码的红色语句时，出现BreakPoint中断：HRESULT AddAudioStream( DWORD dwFormatTag, DWORD dwBitrate, DWORD dwSampleRate, DWORD dwChannels, DWORD dwFlags, IWMProfile *pIWMProfile, IWMProfileManager *pIWMProfileManager ){ HRESULT hr = S_OK; IWMStreamConfig *pIWMStreamConfig = NULL; IWMMediaProps *pIMP = NULL; IWMCodecInfo *pIWMInfo = NULL; WAVEFORMATEX *pSaveWFX = NULL; WM_MEDIA_TYPE *pType = NULL; try { do { hr = pIWMProfileManager->QueryInterface( IID_IWMCodecInfo, (void **) &pIWMInfo ); if( FAILED( hr ) ) { return hr; } DWORD i, j; DWORD cCodecs; hr = pIWMInfo->GetCodecInfoCount( WMMEDIATYPE_Audio, &cCodecs );对话框内容为：

[dialog Microsoft Visual C++]

User Breakpoint called from code at 0x77fa018c

它的定位：

DbgBreakPoint:

77FA018C   int         3

VC的Output窗口打出这样的话：

HEAP[elcc.exe]: Invalid Address specified to RtlFreeHeap( 2d70000, 2d751f8 ) 当时的堆栈调用信息为：NTDLL! DbgBreakPoint address 0x77fa018cNTDLL! RtlpNtEnumerateSubKey + 19613 bytesNTDLL! RtlpNtEnumerateSubKey + 16147 bytesNTDLL! RtlDestroyHandleTable + 1918 bytesNTDLL! 77fcba9e()MSMS001! VoodooUnQuery + 28632 bytesMSMS001! VoodooUnQuery + 27049 bytesMSMS001! VoodooUnQuery + -3737 bytesVCT3216! Dcmp

其实很久以来，在新闻组中大约有6、7个人说过这个问题，但是一直没有人回答为什么和怎么解决。比如，Ed Eichman说：

I had quite a few problems getting the genprofile sample [from

the Windows Media Format SDK] to do ANYTHING on my machine besides

giving user breaks with HEAP[genprofile.exe]: Invalid Address

specified to RtlFreeHeap( 4d70000,4d73f30 ) until I got tired of

hitting OK. Stack crawl was something "helpful" like:

NTDLL! 77f7629c()

NTDLL! 77f8c4de()

NTDLL! 77f7e587()

NTDLL! 77f64f43()

MSMS001! 04d17b68()

MSMS001! 04d17539()

MSMS001! 04d0fcf7()

VCT3216! 044a4326() 比如，Malcolm Nixon说：Whenever I try executing the pIWMAudioWriter->SetOutputFormat(...) line the program prints the following message then faults:HEAP[WMATest.exe]: Invalid Address specified to RtlFreeHeap( 2460000, 2d00000 )I've tried different arguments to SetOutputFormat but to no avail.

原因：

看着下面的output报告，这些加载的DLL都是在执行初始化Windows Media Format SDK的IWMWriter接口时加载的：LOAD_DLL base:04600000 msdmo.dllLOAD_DLL base:53600000 DEFFILE.dllLOAD_DLL base:74F10000 IMAADP32.dllLOAD_DLL base:75CE0000 MSADP32.dllLOAD_DLL base:74EF0000 MSG711.dllLOAD_DLL base:74EC0000 MSGSM32.dllLOAD_DLL base:74EB0000 TSSOFT32.dllLOAD_DLL base:661D0000 tsd32.dllLOAD_DLL base:74F00000 lhacm.dllLOAD_DLL base:74ED0000 msg723.dllLOAD_DLL base:63F40000 IAC25_32.axLOAD_DLL base:1C200000 MSAUD32.ACMLOAD_DLL base:04F40000 sl_anet.acmLOAD_DLL base:04F60000 VCT3216.acmLOAD_DLL base:04F80000 vct3216.dllLOAD_DLL base:057F0000 MSMS001.vwpLOAD_DLL base:05C70000 mvoice.vwpOutDbStr: HEAP[CallDesigner.exe]: OutDbStr: Invalid Address specified to RtlFreeHeap( 5860000, 5864228 )红色的DLL就是根源!

VCT3216.acm就在你的%System32%目录下。它是一个audio codec driver。但是它的调试版本中由于某种原因有异常行为。

你可以删除它。但是据Ed Eichman说并不解决问题。

也可以选择pass这个breakpoint对话框，但是你必须连续跳过这个对话框214次!J

我确实这么做过，连续按了214次F5，和214次确定，终于通过了地雷阵。J

你可以看到这最后一次的output之后，是加载另一个DLL，说明异常确实发生在这几个acm和vwp中：OutDbStr: HEAP[CallDesigner.exe]: OutDbStr: Invalid Address specified to RtlFreeHeap( 5860000, 6144140 )LOAD_DLL base:063F0000 l3codeca.acmOutDbStr: Enter InitWriter 做VirtualDub video免费程序的作者，在MSMS001.vwp中也步入了同样的怪圈。MSMS001.vwp和VCT3216.acm一样，都是Voxware family of codecs的一部分。不过看样子，人家并不打算修正这个问题。所以，你可以买一个自动击键器预备着。

Written by zhengyun@tomosoft.com

Trackback: http://tb.blog.csdn.net/TrackBack.aspx?PostId=12666

内容来自用户分享和网络整理，不保证内容的准确性，如有侵权内容，可联系管理员处理

标签：

相关文章推荐

新的分享

章节导航