Progressive JPG Rendering

[marcus-at-localhost]

would it be possible to render JPGs progressively?

https://stackoverflow.com/questions/41732652/convert-jpeg-to-a-progressive-jpeg-in-php

[mosbth]

I havent tried it, but should be possible by adding a row

imageinterlace($this->image, true);

above https://github.com/mosbth/cimage/blob/master/CImage.php#L2442

Thats a way to trie it out.

To actually implement it one should add some setting to the config file for default behavior and make it possible to override through the querystring like &interlace=true and &interlace=false.

[yogeshsaroya]

I havent tried it, but should be possible by adding a row

imageinterlace($this->image, true);

above https://github.com/mosbth/cimage/blob/master/CImage.php#L2442

Thats a way to trie it out.

To actually implement it one should add some setting to the config file for default behavior and make it possible to override through the querystring like &interlace=true and &interlace=false.

Good. it's working.

[mosbth]

Implemented in v0.8.0.

1) Configuration file option to set default behaviour for all jpeg files:

    /**
     * Default options using interlaced progressive JPEG images. Set to true to
     * always render jpeg images as interlaced. This setting can be overridden
     * by using `?interlace=true` or `?interlace=false`.
     *
     * Default values are:
     *  interlace:  false
     */
     /*'interlace' => false,*/

2) Use option &interlace in query string to render image as interlaced, will override configuration file setting.

3) Override settings from configuration file using query string with value, as &interlace=true or &interlace=false.