Re: [Libjpeg-devel-6x] 12bit jpeg and std_huff_tables

[Tom L. <tg...@ss...>]

Frank Warmerdam <war...@po...> writes:
> The std_huff_tables() function has a comment reading:

> /* Set up the standard Huffman tables (cf. JPEG standard section K.3) */
> /* IMPORTANT: these are only valid for 8-bit data precision! */

> So, my question is, does anyone know appropriate comparable tables to use
> for 12bit images?

AFAIK the JPEG committee never did propose any default Huffman tables
for 12-bit mode :-( ... that's why libjpeg is set up to forcibly compute
a table in that mode.

			regards, tom lane