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📷 A modern, cross-platform, 2D Graphics library for .NET
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ImageSharp/tests/Images/External/tools/jpeg/README.md

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dump-jpeg-coeffs.exe

Usage:

dump-jpeg-coeffs <input.jpg> [output.dctdump]

Dumps the raw DCT blocks of the input image into a binary file. The output file follows the following liear layout:

  1. The number of components as Int16
  2. For each component: (2.1) widthInBlocks as Int16 (2.2) heightInBlocks as Int16
  3. The block data as a raw Int16 dump

The source code could be found here: https://github.com/antonfirsov/libjpeg-turbo/blob/dump-jpeg-coeffs_/jcstest.cpp