DirectShow Spy is updated with a few new features: retroactive Intelligent Connect trace log output for IAMGraphBuilderCallback-related activity process name based black list to selectively exclude processes from spying Intelligent Connect Trace The utility received a capability to read back from its own log file (DirectShowSpy.log, located typically in C:\ProgramData directory) and reconstruct graph building [...]
Posts Tagged ‘graph’
DirectShow Spy: Intelligent Connect Trace, Selective Process Black Listing
Posted: 24th July 2011 by Roman in UtilitiesTags: DirectShow, filter, graph, hook, intelligent connect, memory, spy, trace
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How to use your own video transformation DirectShow filter as an effect while playing back a file
Posted: 12th March 2011 by Roman in Source, VideoTags: DirectShow, filter, graph, Source, tutorial, Video
One of the popular questions asked in relation to DirectShow filters, and also a popular task is to modify video stream while in playback. There are various reasons one might need to do it, including keying video to replace color/range, or apply text or time code on top of video, including while re-compressing footage, adjust [...]
DirectShow Spy: Memory Allocator Properties
Posted: 5th March 2011 by Roman in UtilitiesTags: allocator, buffer, DirectShow, filter, graph, hook, memory, spy
A small update to the DirectShow Spy today: DirectShow Filter Graph Spy prints memory allocator properties as a part of graph topology trace on transition to running state. Why is that and what it is for? Filters normally agree on allocator properties (ALLOCATOR_PROPERTIES, obtained from IMemAllocator, obtained from IMemInputPin) themselves without interference from controlling application. [...]
DirectShow Spy: IAMFilterData interface
Posted: 8th February 2010 by Roman in Technology, Utilities, VideoTags: DirectShow, filter, graph, hook, mapper, spy
This quick update for DirectShow Filter Graph Spy adds tracing for (deprecated) IAMFilterData interface, and also fixes problem with Media Player Classic – Home Cinema, when the player crashes in External Filters windows. Partial Visual C++ .NET 2008 source code is available from SVN, release binary included (Win32, x64); installation instructions are in another post.
DirectShow Spy: Filter Mapper Spy
Posted: 24th December 2009 by Roman in Audio, Source, Technology, VideoTags: DirectShow, filter, graph, hook, mapper, spy
DirectShow Filter Graph Spy was updated to add new functionality: spying over another DirectShow object – Filter Mapper. Filter Mapper object is used for filter registration purposes and also internally by DirectShow’s Intelligent Connect. IFilterMapper2 interface traces provide detailed description on steps DirectShow takes in order to connect and/or render filter pins. For example when [...]
DirectShow Filter Graph Spy: 64-bit version and hook API
Posted: 1st November 2009 by Roman in ATL, TechnologyTags: 64-bit, API, DirectShow, filter, graph, hook, spy, x64
Today’s update for DirectShow Filter Graph Spy introduces 64-bit version (mind the beta state) and a mini-API for an external module to be involved into graph building process. Filter Graph Spy is offering three new interfaces that provide extensibility of the spy: IFilterGraphAddRemoveHook IFilterGraphConnectHook IFilterGraphStateControlHook The interfaces are contained in the type library and can [...]
DirectShow Filter Graph Spy: Log Filters and Connection Media Types
Posted: 6th October 2009 by Roman in TechnologyTags: DirectShow, filter, graph, media, spy
Having hard time to connect to remote filter graph on Windows 7 machine, I suspected that some of the filters do not like being connected through marshaling and freeze. Or, actually more likely, it is SDK’s proppage.dll which hosts proxy stub pairs behaves itself in a not quite expected way and freezes remote application (Graph [...]