Date: Thu, 25 Apr 2013 21:19:14 -0700 From: Isaac Dunham <idunham@...abit.com> To: musl@...ts.openwall.com Subject: Re: High-priority library replacements? On Thu, 25 Apr 2013 00:15:53 -0400 Rich Felker <dalias@...ifal.cx> wrote: > 3. Image format and compression (libpng, zlib, etc.). The existing > libraries are full of atrociously bad error-handling practices, and > quite bloated. These libraries should be well-factored so that > programs that just want to read (the majority of use cases) don't have > to pull in code for writing. Unfortunately the interfaces might not be > so simple, since an important usage case is progressive rendering of > partially-loaded images, both for the purpose of loading over slow > network connections and for rendering thumbnails quickly. Have you perchance seen libpnglite? http://sourceforge.net/projects/pnglite/files/ Yes, I know it's NOT well-factored; the author wanted something where a single file and header could be added to a project and there's PNG support. Uses the png_ namespace. AFAICT, it accepts either a buffer to use for the png or a null pointer, in which case it malloc's what is necessary. License is BSD-ish. It includes a reference to "zlite.h", which seems to be a zip library with a z_ namespace. Also, I ran across stb_image_write.h, but...I hesitate to _recommend_ something where the header contains all the function source. stb_image.c is another "small, but I don't think that's good enough" thing... > All of these libraries should: > > - Avoid namespace pollution. Only external symbols should be the > public API and internal-use stuff prefixed with an ugly prefix > that's extremely unlikely to clash with anything. > - Avoid unnecessary allocation. Use caller-provided objects where > possible or provide both options. > - Have absolutely zero global state. > > That's all I can think of at the moment but I'm sure there are other > needs I've come across and forgotten. Please feel free to supplement > this list. A links that may be helpful, perhaps... http://bashismal.blogspot.com/2011/10/unbloated-resources-in-c.html -- Isaac Dunham <idunham@...abit.com>
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