[poppler] Allow quality & progressive mode to be utilised in JpegWriter

[Albert Astals Cid]

A Dissabte, 24 d'abril de 2010, Harry Roberts va escriure:
> Hi all,
> 
>  Attached is a patch which allows quality & progressive mode to be set in
> JpegWriter.
>  Another writeImgFile method is added to SplashBitmap which allows a
> pre-created ImgWriter to be passed (e.g. a JpegWriter with custom
> quality/progressive mode settings), deletion of the ImgWriter is moved into
> the writeImgFile method which creates it.
>  This is backwards compatible with current applications using JpegWriter or
> SplashBitmap::writeImgFile.
> 
>  I've been using something similar in an application for about a month, but
> avoided using SplashBitmap::writeImgFile because I needed to do resampling
> and post-processing before hand, with this patch it'll allow me to create
> (for example) ResamplingImgWriter to resample it before passing it onto
> another ImgWriter, thus avoiding the duplication that I have at the moment
> (and generally allowing much more flexibility or new image-output formats
> without modifying poppler).

if( quality < 0 || quality > 100 )
seems like reversed logic?

Albert

> 
> Many Regards,
> - Harry Roberts
> - Midnight Labs.