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digitalmars.D - bmp/png libs?

reply "Nick Sabalausky" <a a.a> writes:
Can anyone suggest good up-to-date D libs or bindings for loading/saving bmp 
and png files?
May 13 2009
next sibling parent reply Stewart Gordon <smjg_1998 yahoo.com> writes:
Nick Sabalausky wrote:

 Can anyone suggest good up-to-date D libs or bindings for loading/saving bmp 
 and png files? 


BMP - who in their right mind still uses this?

PNG - Lodepng is one
http://www.dsource.org/projects/scrapple/wiki/LodePngLibrary

but it depends on what you want to be able to do with PNGs.  I'm not 
aware of any full-featured (beyond encoding/decoding of the actual 
image) PNG library yet.

I'm sure there are also a handful of general image format libraries out 
there, but can't seem to find them at the moment.  Maybe someone else 
can help....

Stewart.
May 14 2009
next sibling parent reply Robert Fraser <fraserofthenight gmail.com> writes:
Stewart Gordon wrote:

 BMP - who in their right mind still uses this?


Yeah, zero-overhead; who needs that?
May 14 2009
next sibling parent reply BCS <ao pathlink.com> writes:
Reply to Robert,


 Stewart Gordon wrote:
 

 BMP - who in their right mind still uses this?
 


 Yeah, zero-overhead; who needs that?
 


if you want zero overhead use PPM in binary mode: 32bit color and about ~16 
bytes of non image data that can be output by printf.
May 14 2009
parent Robert Fraser <fraserofthenight gmail.com> writes:
BCS wrote:

 Reply to Robert,
 

 Stewart Gordon wrote:


 BMP - who in their right mind still uses this?


 Yeah, zero-overhead; who needs that?


 
 if you want zero overhead use PPM in binary mode: 32bit color and about 
 ~16 bytes of non image data that can be output by printf.


Yeah, but who's heard of that?
May 14 2009
prev sibling parent Daniel Keep <daniel.keep.lists gmail.com> writes:
Robert Fraser wrote:

 Stewart Gordon wrote:

 BMP - who in their right mind still uses this?


 
 Yeah, zero-overhead; who needs that?


I've never seen BMP loading or saving code that didn't have to resort to
the Windows API.  Even then, the code was horrible.

TGA is a good format for when you just need to put pixels to disk.  A
single fixed-sized header out the front and then just dump the pixels.

Think of it as the non-ass version of BMP that also supports 32-bit colour.

  -- Daniel
May 14 2009
prev sibling parent reply Rainer Deyke <rainerd eldwood.com> writes:
Stewart Gordon wrote:

 Nick Sabalausky wrote:

 Can anyone suggest good up-to-date D libs or bindings for
 loading/saving bmp and png files? 


 
 BMP - who in their right mind still uses this?


BMP is the most popular uncompressed image format.  Uncompressed file
format + lzma compression leads to smaller file size than png + lzma
compression.


-- 
Rainer Deyke - rainerd eldwood.com
May 14 2009
parent reply "Nick Sabalausky" <a a.a> writes:
"Rainer Deyke" <rainerd eldwood.com> wrote in message 
news:guij2k$6sd$2 digitalmars.com...

 Stewart Gordon wrote:

 Nick Sabalausky wrote:

 Can anyone suggest good up-to-date D libs or bindings for
 loading/saving bmp and png files?


 BMP - who in their right mind still uses this?


 BMP is the most popular uncompressed image format.


Yea, this is pretty much the key.  Even if nothing else, it's at least 
useful *because* it's popular. In other words, the same reason why any audio 
app realisticlly needs to support MP3 even though MP3 is probably the single 
worst lossy audio codec out there (an assertion which, by the way, I would 
love to be proven wrong about, just you know, so I don't pop a vein every 
time I think about "average joe" and music players...).
May 14 2009
parent reply Rainer Deyke <rainerd eldwood.com> writes:
Nick Sabalausky wrote:

 Yea, this is pretty much the key.  Even if nothing else, it's at least 
 useful *because* it's popular. In other words, the same reason why any audio 
 app realisticlly needs to support MP3 even though MP3 is probably the single 
 worst lossy audio codec out there (an assertion which, by the way, I would 
 love to be proven wrong about, just you know, so I don't pop a vein every 
 time I think about "average joe" and music players...). 


mp3 is the worst lossy lossy audio compression codec precisely because
it is so popular that it managed to kill off all of its competitors
except those that have a strong advantage over mp3.  You don't hear
about au files or mp2 files anymore.


-- 
Rainer Deyke - rainerd eldwood.com
May 14 2009
parent reply "Nick Sabalausky" <a a.a> writes:
"Rainer Deyke" <rainerd eldwood.com> wrote in message 
news:guimbr$dem$1 digitalmars.com...

 Nick Sabalausky wrote:

 Yea, this is pretty much the key.  Even if nothing else, it's at least
 useful *because* it's popular. In other words, the same reason why any 
 audio
 app realisticlly needs to support MP3 even though MP3 is probably the 
 single
 worst lossy audio codec out there (an assertion which, by the way, I 
 would
 love to be proven wrong about, just you know, so I don't pop a vein every
 time I think about "average joe" and music players...).


 mp3 is the worst lossy lossy audio compression codec precisely because
 it is so popular that it managed to kill off all of its competitors
 except those that have a strong advantage over mp3.  You don't hear
 about au files or mp2 files anymore.


Good point.

au was lossy?
May 14 2009
parent Rainer Deyke <rainerd eldwood.com> writes:
Nick Sabalausky wrote:

 au was lossy? 


Yes, to the extend that it was compressed at all.  Each 16 bit sample
was independently reduced to 8 bits using a logarithmic scale.

-- 
Rainer Deyke - rainerd eldwood.com
May 14 2009
prev sibling next sibling parent reply "Adam D. Ruppe" <destructionator gmail.com> writes:
On Wed, May 13, 2009 at 11:35:03PM -0400, Nick Sabalausky wrote:

 Can anyone suggest good up-to-date D libs or bindings for loading/saving bmp 
 and png files? 
 


I wrote a very minimal BMP class in D2 a while back. I didn't finish it
so IIRC it only supports 24 and maybe 8 bit bitmaps, but it worked for what
I needed it for - Paint can read and write those formats too.

Looking at the code, oh foo, it saves but doesn't load. I have C code
that can load 8 and 24 bit though.

Probably not super useful, but it is simple, so maybe it will help.

Here's a link. Includes both the D and C files. Look at the bottom of each
file for an example main(). Other than that, there are no docs, but the
function names should be fairly self-explanatory.

http://arsdnet.net/bmpstuff.zip

I didn't put a copyright notice in the files, but I release them into the
public domain, so do whatever you want with it.

With the weekend coming up, I'll hopefully have the time to go back and
finish / improve / document that code and I'll update the zip and post
another message to the group then if anyone is interested.


Let me know if it is at all useful.

-- 
Adam D. Ruppe
http://arsdnet.net
May 14 2009
parent reply "Nick Sabalausky" <a a.a> writes:
"Adam D. Ruppe" <destructionator gmail.com> wrote in message 
news:mailman.70.1242352289.13405.digitalmars-d puremagic.com...

 On Wed, May 13, 2009 at 11:35:03PM -0400, Nick Sabalausky wrote:

 Can anyone suggest good up-to-date D libs or bindings for loading/saving 
 bmp
 and png files?


 I wrote a very minimal BMP class in D2 a while back. I didn't finish it
 so IIRC it only supports 24 and maybe 8 bit bitmaps, but it worked for 
 what
 I needed it for - Paint can read and write those formats too.

 Looking at the code, oh foo, it saves but doesn't load. I have C code
 that can load 8 and 24 bit though.

 Probably not super useful, but it is simple, so maybe it will help.

 Here's a link. Includes both the D and C files. Look at the bottom of each
 file for an example main(). Other than that, there are no docs, but the
 function names should be fairly self-explanatory.

 http://arsdnet.net/bmpstuff.zip

 I didn't put a copyright notice in the files, but I release them into the
 public domain, so do whatever you want with it.

 With the weekend coming up, I'll hopefully have the time to go back and
 finish / improve / document that code and I'll update the zip and post
 another message to the group then if anyone is interested.


 Let me know if it is at all useful.


Thanks, I'll take a look. Although now that you mention it, I also have some 
old C code somewhere that handles BMP (at least loading anyway, and PCX too, 
in fact (remember that?) ). But I have a suspicion that 
reading/understanding/adapting yours, even if it's not cleaned up, will 
probably be easier than digging out and porting my old stuff :)

Also, thanks for eveyone else's advice.
May 14 2009
parent "Adam D. Ruppe" <destructionator gmail.com> writes:
Well, I've been doing some more work on it today. The biggest new function
is BMP.display(), which pops up a window displaying the bmp on the screen.

I also cleaned up the code a little, put in a preliminary load from file
function, and added some ddocs.

Download here:

http://arsdnet.net/bmpstuff.zip

DDoc here:

http://arsdnet.net/bmp.html

See also the bottom of bmp.d for some examples (also see the commented code in
that main function).

A short example program:

----

import bmp;

void main() {
	auto i = new BMP("picture.bmp"); // note this MUST be a 24 bit bmp
	i.display(); // show it on screen!
	i.setPixel(10, 10, Color(255,255,255)); // add a white pixel at 10,10
	i.save("hacked.bmp"); // save it back to a file
}

-------

Writing to a file is useful, but showing it right there is really cool.

The display function I've written is still somewhat buggy and is very slow on
X11, but works reasonably well on Windows. (I really need to brush up on my
xlib.)

But what I imagine this being useful for is whipping up quick graphs and such.
Saving to a bmp is fun, but this seems useful too.



I also had to read the PNG spec yesterday for work, and am starting on adding
basic png read/write support too. I already have the chunks read into D
structs for easy processing (not in that zip), but haven't coded the
compression, so it can't actually work with the image data.

I probably won't get around to finishing this until at least next weekend.

Off topic:
I also have some D + C code for playing and doing light work with .wav
and .mid files too. As I have the time, I'll see about posting that somewhere
too. These basic file formats are nice things to have.

-- 
Adam D. Ruppe
http://arsdnet.net
May 16 2009
prev sibling next sibling parent reply div0 <div0 users.sourceforge.net> writes:
Nick Sabalausky wrote:

 Can anyone suggest good up-to-date D libs or bindings for loading/saving bmp 
 and png files? 
 
 


http://www.ssTk.co.uk/png.php

Import is for d2, but changing it for d1 would be trivial.

-- 
My enormous talent is exceeded only by my outrageous laziness.
May 14 2009
parent reply "Nick Sabalausky" <a a.a> writes:
"div0" <div0 users.sourceforge.net> wrote in message 
news:guirpq$m70$1 digitalmars.com...

 Nick Sabalausky wrote:

 Can anyone suggest good up-to-date D libs or bindings for loading/saving 
 bmp
 and png files?


 http://www.ssTk.co.uk/png.php

 Import is for d2, but changing it for d1 would be trivial.


Ah, cool.


 -- 
 My enormous talent is exceeded only by my outrageous laziness.


Heh, I'm gonna have to steal that line, but slightly changed (disclaimer: 
this is not intended as an insult to you (only an insult to me ;) )): "My 
enormous talent is exceeded only by my sheer arrogance." (Again, that's not 
intended as a jab at you, I just think that line would be hilarious :) )
May 14 2009
next sibling parent reply Andrei Alexandrescu <SeeWebsiteForEmail erdani.org> writes:
Nick Sabalausky wrote:

 "div0" <div0 users.sourceforge.net> wrote in message 
 news:guirpq$m70$1 digitalmars.com...

 Nick Sabalausky wrote:

 Can anyone suggest good up-to-date D libs or bindings for loading/saving 
 bmp
 and png files?


 http://www.ssTk.co.uk/png.php

 Import is for d2, but changing it for d1 would be trivial.


 
 Ah, cool.
 

 -- 
 My enormous talent is exceeded only by my outrageous laziness.


 
 Heh, I'm gonna have to steal that line, but slightly changed (disclaimer: 
 this is not intended as an insult to you (only an insult to me ;) )): "My 
 enormous talent is exceeded only by my sheer arrogance." (Again, that's not 
 intended as a jab at you, I just think that line would be hilarious :) ) 
 
 


My enormous talent is exceeded only by my skill at creating one-liners.

Andrei (succumbing to infinite recursion)
May 14 2009
parent reply Daniel Keep <daniel.keep.lists gmail.com> writes:
Andrei Alexandrescu wrote:

 Nick Sabalausky wrote:

 "div0" <div0 users.sourceforge.net> wrote in message
 news:guirpq$m70$1 digitalmars.com...

 Nick Sabalausky wrote:

 Can anyone suggest good up-to-date D libs or bindings for
 loading/saving bmp
 and png files?


 http://www.ssTk.co.uk/png.php

 Import is for d2, but changing it for d1 would be trivial.


 Ah, cool.


 -- 
 My enormous talent is exceeded only by my outrageous laziness.


 Heh, I'm gonna have to steal that line, but slightly changed
 (disclaimer: this is not intended as an insult to you (only an insult
 to me ;) )): "My enormous talent is exceeded only by my sheer
 arrogance." (Again, that's not intended as a jab at you, I just think
 that line would be hilarious :) )


 
 My enormous talent is exceeded only by my skill at creating one-liners.
 
 Andrei (succumbing to infinite recursion)


Wouldn't that be "My enormous talent is exceeded only by my enormous
talent."?

  -- Daniel
May 14 2009
parent reply Georg Wrede <georg.wrede iki.fi> writes:
Daniel Keep wrote:

 
 Andrei Alexandrescu wrote:

 Nick Sabalausky wrote:

 "div0" <div0 users.sourceforge.net> wrote in message
 news:guirpq$m70$1 digitalmars.com...

 Nick Sabalausky wrote:

 Can anyone suggest good up-to-date D libs or bindings for
 loading/saving bmp
 and png files?


 http://www.ssTk.co.uk/png.php

 Import is for d2, but changing it for d1 would be trivial.


 Ah, cool.


 -- 
 My enormous talent is exceeded only by my outrageous laziness.


 Heh, I'm gonna have to steal that line, but slightly changed
 (disclaimer: this is not intended as an insult to you (only an insult
 to me ;) )): "My enormous talent is exceeded only by my sheer
 arrogance." (Again, that's not intended as a jab at you, I just think
 that line would be hilarious :) )


 My enormous talent is exceeded only by my skill at creating one-liners.

 Andrei (succumbing to infinite recursion)


 
 Wouldn't that be "My enormous talent is exceeded only by my enormous
 talent."?


My enormous sarcasm is exceeded only by my enormous talent.
May 16 2009
parent div0 <div0 users.sourceforge.net> writes:
Georg Wrede wrote:

 Daniel Keep wrote:

 Andrei Alexandrescu wrote:

 Nick Sabalausky wrote:

 "div0" <div0 users.sourceforge.net> wrote in message
 news:guirpq$m70$1 digitalmars.com...

 Nick Sabalausky wrote:

 Can anyone suggest good up-to-date D libs or bindings for
 loading/saving bmp
 and png files?


 http://www.ssTk.co.uk/png.php

 Import is for d2, but changing it for d1 would be trivial.


 Ah, cool.


 -- 
 My enormous talent is exceeded only by my outrageous laziness.


 Heh, I'm gonna have to steal that line, but slightly changed
 (disclaimer: this is not intended as an insult to you (only an insult
 to me ;) )): "My enormous talent is exceeded only by my sheer
 arrogance." (Again, that's not intended as a jab at you, I just think
 that line would be hilarious :) )


 My enormous talent is exceeded only by my skill at creating one-liners.

 Andrei (succumbing to infinite recursion)


 Wouldn't that be "My enormous talent is exceeded only by my enormous
 talent."?


 
 My enormous sarcasm is exceeded only by my enormous talent.


There should be some web comic that expresses the sinking feeling you
get went you come to suspect that your usenet sig will be the most
important contribution you make to the world. :P

-- 
My enormous talent is exceeded only by my outrageous laziness.
May 16 2009
prev sibling next sibling parent div0 <div0 users.sourceforge.net> writes:
Nick Sabalausky wrote:

 "div0" <div0 users.sourceforge.net> wrote in message 
 news:guirpq$m70$1 digitalmars.com...

 Nick Sabalausky wrote:

 Can anyone suggest good up-to-date D libs or bindings for loading/saving 
 bmp
 and png files?


 http://www.ssTk.co.uk/png.php

 Import is for d2, but changing it for d1 would be trivial.


 
 Ah, cool.
 

 -- 
 My enormous talent is exceeded only by my outrageous laziness.


 
 Heh, I'm gonna have to steal that line, but slightly changed (disclaimer: 
 this is not intended as an insult to you (only an insult to me ;) )): "My 
 enormous talent is exceeded only by my sheer arrogance." (Again, that's not 
 intended as a jab at you, I just think that line would be hilarious :) ) 
 
 


:) share and enjoy.

-- 
My enormous talent is exceeded only by my outrageous laziness.
May 14 2009
prev sibling parent div0 <div0 users.sourceforge.net> writes:
Nick Sabalausky wrote:

 "div0" <div0 users.sourceforge.net> wrote in message 
 news:guirpq$m70$1 digitalmars.com...

 Nick Sabalausky wrote:

 Can anyone suggest good up-to-date D libs or bindings for loading/saving 
 bmp
 and png files?


 http://www.ssTk.co.uk/png.php

 Import is for d2, but changing it for d1 would be trivial.


 
 Ah, cool.


Thinking about it, if you do modify it for d1, send me the changed
version and I'll merge it with a version block.

Got a version of jpeg6b & freeType as well. I'll upload them later once
ftp access stops being a pig.

-- 
My enormous talent is exceeded only by my outrageous laziness.
May 14 2009
prev sibling parent digited <digited yandex.ru.removethis> writes:
Nick Sabalausky Wrote:


 Can anyone suggest good up-to-date D libs or bindings for loading/saving bmp 
 and png files? 
 
 


If you'll need more (formats for i/o or some processing), you can use
DerelictIL/ILU bindings + DevIL free lib. This lib seems to be the best bicycle
of that sort, you actually don't have to write image io *again*.
May 16 2009