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Jake Archibald f396a5b784 MozJPEG chroma subsampling and quality (#235 )

* Adding chroma subsampling for mozjpeg

* Adding separate chroma quality.

* Preact sometimes removes the inline styles, this fixes it.

* Simplifying chroma subsample

* Adding comments

2018-11-06 13:46:52 +00:00

885 B

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MozJPEG encoder

Source: https://github.com/mozilla/mozjpeg
Version: v3.3.1

Dependencies

Docker

Example

See example.html

API

`int version()`

Returns the version of MozJPEG as a number. va.b.c is encoded as 0x0a0b0c

`void free_result()`

Frees the result created by encode().

`Uint8Array encode(std::string image_in, int image_width, int image_height, MozJpegOptions opts)`

Encodes the given image with given dimension to JPEG. Options looks like this:

struct MozJpegOptions {
  int quality;
  bool baseline;
  bool arithmetic;
  bool progressive;
  bool optimize_coding;
  int smoothing;
  int color_space;
  int quant_table;
  bool trellis_multipass;
  bool trellis_opt_zero;
  bool trellis_opt_table;
  int trellis_loops;
  bool auto_subsample;
  int chroma_subsample;
  bool separate_chroma_quality;
  int chroma_quality;
};

885 B Raw Blame History