// Oprogramowanie Roman Ryltsov
See beginning in microsoft.public.win32.programmer.directx.video newsgroup. This sample is demonstrating COM aggregation to embed an existing filter an re-expose it as a new filter having inner filter pre-initialized. The Visual Studio C++.NET 2008 projects contains a DirectShow filter class that registers itself under Video Capture Sources category and embeds File Source (Async) Filter inside initialized to…
Previously on the topic: Part 1: Starting the Project Part 2: Video Processing Part 3: Persistence, Automation and Property Pages Part 4: Merit Due to the nature of the brightness and constract correction processing, it would make sense to combine and simplify processing to apply correction “in-place”, that is without copying data from input to…
Previously on the topic: Part 1: Starting the Project Part 2: Video Processing Part 3: Persistence, Automation and Property Pages The implemented so far filter/DMO shown a problem related to its unexpectedly high “importance” in the system with the symptom of “auto-insertion” the filter when it is not necessary. For example, let us render an…
See topic on MSDN Forums about coloring issue. This is a demo of YUY2 to YV12 conversion as suggested copying Y values and averaging U and V. Original image is on the right. Code snippet to perform the transformation:
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…