Re: [boost] [gil::io] Feedback for scanline_read_iterator

Subject: Re: [boost] [gil::io] Feedback for scanline_read_iterator
From: Christian Henning (chhenning_at_[hidden])
Date: 2013-02-18 12:16:32

Hi Mateusz,

>>
>> Could you give me some prototype code?
>
> From top of my head, using reader template not necessarily exactly
> defined in GIL:
>
> template<template Device, template Tag>
> struct scanline_reader
> {
>    typedef typename scanline_reader<Device, Tag> reader_type:
>
>    // deduce accurate type of buffer from reader's Device
>    scanline_read_iterator<reader_type> begin(const char* buffer)
>    {
>        return scanline_read_iterator<reader_type>(*this, buffer);
>    }
> };
>

OK, I can see that would be a valid code addition.

> My point is this:
> if examples in GIL use explicit type like rgb8_pixel_t*, then in consequence
> this knowledge is useless for users who work with different type of images.

Yes, that should be fixed.

Christian