Java-Gaming.org Hi !
Featured games (90)
games approved by the League of Dukes
Games in Showcase (686)
Games in Android Showcase (198)
games submitted by our members
Games in WIP (758)
games currently in development
News: Read the Java Gaming Resources, or peek at the official Java tutorials
 
    Home     Help   Search   Login   Register   
Pages: [1]
  ignore  |  Print  
  fastest image writing  (Read 5124 times)
0 Members and 1 Guest are viewing this topic.
Offline counterp

Senior Devvie


Medals: 11



« Posted 2011-08-11 21:28:17 »

ImageIO.write is dangerously slow and I guess that's because it's compressing the image to another format.

So how do I go about doing this, when size isn't a factor?

The fastest method of writing an image. Do I grab all pixels and write them?
Online Riven
Administrator

« JGO Overlord »


Medals: 1237
Projects: 4
Exp: 16 years


Hand over your head.


« Reply #1 - Posted 2011-08-11 21:56:27 »

TGA

it's basically a header + dump of the pixels

Hi, appreciate more people! Σ ♥ = ¾
Learn how to award medals... and work your way up the social rankings!
Offline counterp

Senior Devvie


Medals: 11



« Reply #2 - Posted 2011-08-11 22:04:49 »

Is there a faster way of getting all the pixels or do I just have to use

1  
2  
3  
BufferedImage img = region.images[i];
int[] ARGB = new int[w * h];
img.getRGB(0, 0, w, h, ARGB, 0, w);


is there a way to avoid the integer array all together and write info directly to a byte array?
Games published by our own members! Check 'em out!
Legends of Yore - The Casual Retro Roguelike
Online Riven
Administrator

« JGO Overlord »


Medals: 1237
Projects: 4
Exp: 16 years


Hand over your head.


« Reply #3 - Posted 2011-08-11 22:07:01 »

about a zillion times faster:
1  
2  
3  
4  
5  
6  
7  
8  
9  
   public static int[] accessRasterIntArray(BufferedImage src)
   {
      return ((DataBufferInt) src.getRaster().getDataBuffer()).getData();
   }

   public static byte[] accessRasterByteArray(BufferedImage src)
   {
      return ((DataBufferByte) src.getRaster().getDataBuffer()).getData();
   }

Hi, appreciate more people! Σ ♥ = ¾
Learn how to award medals... and work your way up the social rankings!
Offline counterp

Senior Devvie


Medals: 11



« Reply #4 - Posted 2011-08-11 22:08:11 »

1  
2  
3  
4  
public static byte[] accessRasterByteArray(BufferedImage src)
{
   return ((DataBufferByte) src.getRaster().getDataBuffer()).getData();
}


I think that was exactly what I was looking for Wink

thanks
Online Riven
Administrator

« JGO Overlord »


Medals: 1237
Projects: 4
Exp: 16 years


Hand over your head.


« Reply #5 - Posted 2011-08-11 22:09:50 »

btw: you can use BufferedImage().getType() to pick the correct backing DataBuffer

Hi, appreciate more people! Σ ♥ = ¾
Learn how to award medals... and work your way up the social rankings!
Offline counterp

Senior Devvie


Medals: 11



« Reply #6 - Posted 2011-08-11 22:29:30 »

EDIT: Alright everything's working
Pages: [1]
  ignore  |  Print  
 
 
You cannot reply to this message, because it is very, very old.

 
roseslayer (398 views)
2016-08-06 11:43:29

roseslayer (364 views)
2016-08-06 09:43:11

xTheGamerCodes (438 views)
2016-08-04 15:40:59

xTheGamerCodes (432 views)
2016-08-04 15:40:24

orrenravid (783 views)
2016-07-16 03:57:23

theagentd (858 views)
2016-07-11 14:28:54

Hydroque (957 views)
2016-07-06 05:56:57

Hydroque (983 views)
2016-07-03 08:52:54

GrandCastle (796 views)
2016-07-01 09:13:47

GrandCastle (635 views)
2016-07-01 09:09:45
Rendering resources
by Roquen
2016-08-08 05:55:21

Rendering resources
by Roquen
2016-08-08 05:52:42

Rendering resources
by Roquen
2016-08-08 05:50:38

Rendering resources
by Roquen
2016-08-08 05:49:53

Rendering resources
by Roquen
2016-08-08 05:32:39

Making a Dynamic Plugin System
by Hydroque
2016-06-25 00:13:25

Java Data structures
by BinaryMonkL
2016-06-13 21:22:09

Java Data structures
by BinaryMonkL
2016-06-13 21:20:42
java-gaming.org is not responsible for the content posted by its members, including references to external websites, and other references that may or may not have a relation with our primarily gaming and game production oriented community. inquiries and complaints can be sent via email to the info‑account of the company managing the website of java‑gaming.org
Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines | Managed by Enhanced Four Valid XHTML 1.0! Valid CSS!