AWARE SYSTEMS
TIFF and LibTiff Mail List Archive

Thread

2015.02.08 19:19 "[Tiff] Add support for 12 and 16 bpp to ppm2tiff", by Ludolf Holzheid
2015.02.09 23:32 "Re: [Tiff] Add support for 12 and 16 bpp to ppm2tiff", by Bob Friesenhahn
2015.02.10 21:53 "Re: [Tiff] Add support for 12 and 16 bpp to ppm2tiff", by Ludolf Holzheid
2015.02.10 22:09 "Re: [Tiff] Add support for 12 and 16 bpp to ppm2tiff", by Bob Friesenhahn
2015.02.15 17:04 "Re: [Tiff] Add support for 12 and 16 bpp to ppm2tiff", by Ludolf Holzheid
2015.02.11 23:36 "Re: [Tiff] Add support for 12 and 16 bpp to ppm2tiff", by Prophet of the Way

2015.02.10 21:53 "Re: [Tiff] Add support for 12 and 16 bpp to ppm2tiff", by Ludolf Holzheid

On 2015-02-09 17:32 -0600, Bob Friesenhahn wrote:

Is there any reason not to support arbitrary maxval ranges up to 65535?

No, I just compiled LibTIFF with 12-bit JPEG support, but had no sample pictures to try with.

It should be no problem to update the patch for arbitrary bpp values less or equal 16.

What about adding support for PAM format?

There is no real need for direct PAM format support, as pamtopnm exists and does not affect the picture quality. You need pamtopnm anyway to read the plain text variants of PBM, PGM and PPM.

For full support of the range of Netpbm file formats, we'd better link against libnetpbm. (This, however, would make the dependency between LibTIFF and Netpbm circular ;-) .)

Ludolf

--

Ludolf Holzheid [ˈluˑ.doːlf ˈhɔlts.haɪd]

Heinrichstraße 6   [ˈhaɪn.ʀɪçˌʃtʀɑː.sə 6]
68642 Bürstadt     [68642 ˈbyːʁ.ʃtat]

PGP key fingerprint: 92DC 63E6 B2CD BCFD 8A6C E390 6306 0DA6 4629 72FB