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Add isProgressive flag to metadata output, requires libvips v8.7.0

See original GitHub issue

http://sharp.pixelplumbing.com/en/stable/api-input/#metadata

isProgressive: Boolean indicating whether the input image is interlaced (supported by JPEG and PNG)

See commit https://github.com/jcupitt/libvips/commit/15abbbe9863629227e7b0a04c78ef1b2d3aeb4b2

(“progressive” is used in preference to “interlaced” to ensure consistency with the output functions.)

Issue Analytics

State:
Created 5 years ago
Comments:5 (3 by maintainers)

Top GitHub Comments

1reaction

rn4391commented, Apr 27, 2018

Subsampling related task completed in vips https://github.com/jcupitt/libvips/issues/954 I think it can now be appended to this task itself.

1reaction

lovellcommented, Apr 11, 2018

@rnanwani Support for exposing h_samp_factor and v_samp_factor would need to be added to libvips’ read_jpeg_header function first. Both these and isProgressive can be determined without decoding pixel data so belong in metadata().