Sharp: TIFF format to/from Buffer, requires libvips v8.5.2+

[strarsis]

I cannot find a tif(f)() output method, also toFormat('tiff')/toFormat('tif') results in error:

[Error: Unsupported output format tif(f)]

It would be great if sharp supports tiff as output format, too.

[lovell]

Hello, TIFF output is limited to filesystem only - use something like toFile('file.tif', ...) to access this feature.

[strarsis]

I have to use the extra steps reading/writing the file (using fs module)
because of the issue with special characters in path.

It would be great if output methods for TIFF is expanded to buffer, too.

[lovell]

"the issue with special characters in path"

This has been fixed in libvips 8.4.x - see https://github.com/jcupitt/libvips/issues/294

[strarsis]

Do I have to install/build the newer libvips myself or is it shipped/built by sharp package?
I still have this issue on Windows + Linux - see this test: https://github.com/strarsis/sharp-issue-characters/

Edit: Apparently, an older libvips version is used: https://github.com/lovell/sharp/blob/master/package.json#L84

Besides, it would be still helpful if TIFF could be obtained as buffer for
further processing in-memory without the need of a temporary files.

[lovell]

The next major version of sharp, v0.17.0, will be bundled with a pre-compiled libvips v8.4.x+.

"it would be still helpful if TIFF could be obtained as buffer"

You'll need to add tiffload_buffer (and tiffsave_buffer) support to libvips, then expose the feature in sharp. If you're willing to work on this and submit a PR then I'm sure John will help.

[lovell]

See https://github.com/jcupitt/libvips/issues/417

[strarsis]

Thanks!

[lovell]

I'll assume you intended to close this, feel free to re-open if not.

[felixbuenemann]

@lovell John implemented tiffsave_buffer in master and it should be included in vips 8.5.

[lovell]

@felixbuenemann Thanks, will re-open and mark as a future enhancement.

[lovell]

Commit c8e59f0 on the ridge branch adds Buffer and Stream based TIFF output. This will be in v0.18.0.

[lovell]

v0.18.0 now available with this feature.