// Oprogramowanie Roman Ryltsov
Active Template Library related
This seems to be undocumented (Google does not know anything on this): ATL server executables may be run with /RegServerPerUser and /UnregServerPerUser switches to hopefully (this what would expect this to do without checking) register contained COM classes under HKEY_CURRENT_USER rather than HKEY_LOCAL_MACHINE and thus allow COM server run under credentials of non-administrative user. See…
Previously on the topic: Part 1: Starting the Project Part 2: Video Processing The principal task of video processing is done but there are still things mandatory for the filter to be usable. First of all, a custom interface is required to be able to control the filter from higher level application and to adjust…
Previously on the topic: Part 1: Starting the Project We have the DMO filter project compilable and registered with the system and it is right time to start putting code in that allows connecting the filter to other DirectShow filters, such as video capture or video file source on the input and video renderer on…
This post is starting a step by step tutorial on writing a simple DirectShow filter using a simplified DirectX Media Objects (DMO) API. From the very scratch, the goal is to make a DirectShow/DMO video processing filter which implements video brightness and contrast correction. DirectX Media Objects are COM-based components. To implement a COM object…
Surprisingly fast I got new problems having ffdshow installed as a part of K-Lite Codec Pack. No wonder though because let us take a look at registration information: Display Name: @device:sw:{083863F1-70DE-11D0-BD40-00A0C911CE86}\{0F40E1E5-4F79-4988-B1A9-CC98794E6B55} CLSID: {0F40E1E5-4F79-4988-B1A9-CC98794E6B55} Friendly Name: ffdshow Audio Decoder Path: C:\Program Files\K-Lite Codec Pack\ffdshow\ffdshow.ax Merit: 0x3fffffff Nice merit, ain’t it? What is merit anyway? Let us…
It appears that ATL does not center window correctly on multi-monitor systems. ATL code checks screen work area coordinates in CWindow::CenterWindow to ensure new position is within visible area, however since SystemParametersInfo/SPI_GETWORKAREA is used target rectangle is always on a primary monitor. This hotfix works the problem around:
I am compiling C++ project which is using IJG JPEG library using Visual Studio .NET 2005 (yes, 2008 is yet to come) and it came as a surprise that I stumbled upon struct data alignment issue. I am pretty sure this was not a problem with Visual Studio .NET 2003. The project includes my C++…