Class Wrapper for Video Compression Manager (VCM)

Introduction

1. Processing a real-time video data from capture card with h/w codec
2. Compressing/decompressing AVI file and writing results to the disk
3. Compressing and decompressing single video image.
   No comments about (1) and (2): this is the most usual way for utilizing VCM service. CVidc class presented below is intended for compressing and decompressing single video image, although it can be easy modified for any other purpose. I had a special reason for developing this class: in fact video codecs has an extremely high rate of decompression, no one from existing image compressors can compare with video codecs. At the same time, all of them are quite slow for compression. Thereby when you need to store many compressed images and provide the fastest reading, using the video codec seems to be the best solution.

Class implementation.

Class usage.

1. Create CVidc class object
2. Call OpenCompressor() method to initialize compressing, or suitable kind of OpenDecompressor() for decompressing.
3. Setup your callback function using SetProgressCallback() method if you need a progress notification.
4. Call Compress() or Decompress(). If you need to decompress single image from sequence
   you can probably use DecompressEx(), which accepts special flags( see SDK for more info).
5. Close codec using Close() method.

Class also provides a few services for querying format, enumerating installed codecs, obtaining information from codec and so on. See Vidc.h for more info.

Remark about capturing compressed video data.

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