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**bhunter** · 08-16-2007, 06:48 PM

I need to be able to read the image from an Eboot, an ISO, a CSO, a JSO or a DAX file and then populate an image object. I know there are tons of things in C that do it but I need to do it from VB.NET.

Proof of concept we managed to bytestream the Eboot but I still have two problems, 1) how to populate the bytestream to an image object and 2) how to read this info from ISO/CSO/JSO/DAX files.

Anyone got any ideas?

Thanks in advance if anyone can offer any advice on this.

**Art** · 08-16-2007, 06:59 PM

Why not search for the header then read in data from there?
That's how I read a PNG file from an eboot (the icon0.PNG).
I must admit it is a known size though. Bitmaps wouldn't be
a problem there because you can calculate the size given the
dimensions (which are in it's file header). I imagine other image
formats give similar info in their file headers?
Art.

**bhunter** · 08-16-2007, 07:04 PM

That is what we are doing with the bytestreaming on the Eboots but I have no idea how to populate the results into an image short of streaming it to a file and loading the file which is extremely messy

. I also have no idea how to get to the header in a CSO etc

.

We can succesfuly find the PNG information in the eboot header but that is where I then get lost

. I can stream it to a variable and manually take that result and paste it into a file in notepad, rename it to test.png and open it and it IS the image, Like I said though, I am stuck at that point. Just need a couple of pointers to go off and research as right now, I don't even know what I am looking for in order to be able to search for it online and learn how to do it

.

**pspballer07** · 08-16-2007, 07:25 PM

Quote:

Originally Posted by bhunter

We can succesfuly find the PNG information in the eboot header but that is where I then get lost

. I can stream it to a variable and manually take that result and paste it into a file in notepad, rename it to test.png and open it and it IS the image, Like I said though, I am stuck at that point. Just need a couple of pointers to go off and research as right now, I don't even know what I am looking for in order to be able to search for it online and learn how to do it

.

if ur saying u wanna do it automatically, what u would do is get the offset of where the .png is located in the file and probably the length then when u load the .png, u can just fseek() it to the offset.

**Art** · 08-16-2007, 08:24 PM

Once you have the image in an array (which you have) you're set. Particularly if it's a PNG.
The sample I posted at the end of this page:
http://forums.qj.net/f-developers-du...005/page3.html
demonstrates how to use it.
You need to replace your graphics.c/h with the one in the zip package
because it contains Shine's function to load images from memory (what you want to do).

Reading from a cso... dunno. Let me know if you find out.
There must be some code to read them in the forbidden leaked firmware files
so that they can be played.
Art.

**bhunter** · 08-16-2007, 08:53 PM

Thanks man but here lies my problem, I am trying to do this in VB.NET, not C

I found this code ages ago called ExtractPic but again, it is in C

.

**pspballer07** · 08-16-2007, 11:09 PM

Quote:

Originally Posted by bhunter

Thanks man but here lies my problem, I am trying to do this in VB.NET, not C

I found this code ages ago called ExtractPic but again, it is in C

.

well, if u know VB.NET, I'm sure there is a File I/O function that does the same as fseek().
sorry, wasnt payin attention the first time.

**bhunter** · 08-16-2007, 11:21 PM

Tis all good, I will have a poke around the net and see what I can discover

.

Thanks to both of you for your help, I at least have a starting point for my searches now

.

**bhunter** · 08-28-2007, 05:46 PM

A little bit of headway on this:

Code:

PSPGame.Image = System.Drawing.Bitmap.FromStream(StreamVar)

Seems to be what I have been looking for for ages. Funny that I stumbled upon it whilst trying to port an arcade emu from VB5 to .NET

Next I need to work out how to read the header from a CSO

**Art** · 08-28-2007, 06:50 PM

I think you would need a zip library for that.
Not sure, but I think cso are zipped.

**bhunter** · 08-28-2007, 07:22 PM

Excelent, thankyou

. If I can cover some ground on this over the weekend then maybe a new version soon

**flatmush** · 08-29-2007, 03:36 AM

I used to be a vb6 programmer, trust me at this point it would make your life easier to just learn C/C++. VB isn't very well suited to low-ish level stuff like this.

08-16-2007, 06:48 PM	#1
bhunter Developer Join Date: Dec 2006 Location: Sydney, Australia Posts: 163 Trader Feedback: 0	Anyone know how to read an image from an eboot / iso / cso etc? I need to be able to read the image from an Eboot, an ISO, a CSO, a JSO or a DAX file and then populate an image object. I know there are tons of things in C that do it but I need to do it from VB.NET. Proof of concept we managed to bytestream the Eboot but I still have two problems, 1) how to populate the bytestream to an image object and 2) how to read this info from ISO/CSO/JSO/DAX files. Anyone got any ideas? Thanks in advance if anyone can offer any advice on this. __________________ PSP History Bought Dec 15th 2006 @ 2.6 -> 2.71 HEND -> 1.5 -> 3.02 OE-A -> 3.02 OE-B -> 3.03 OE-A -> 3.03OE-A' -> 3.03 OE-B -> 3.10 OE-A -> 3.10 OE-A' -> 3.30 OE-A.

08-16-2007, 07:04 PM	#3
bhunter Developer Join Date: Dec 2006 Location: Sydney, Australia Posts: 163 Trader Feedback: 0	That is what we are doing with the bytestreaming on the Eboots but I have no idea how to populate the results into an image short of streaming it to a file and loading the file which is extremely messy . I also have no idea how to get to the header in a CSO etc . We can succesfuly find the PNG information in the eboot header but that is where I then get lost . I can stream it to a variable and manually take that result and paste it into a file in notepad, rename it to test.png and open it and it IS the image, Like I said though, I am stuck at that point. Just need a couple of pointers to go off and research as right now, I don't even know what I am looking for in order to be able to search for it online and learn how to do it . __________________ PSP History Bought Dec 15th 2006 @ 2.6 -> 2.71 HEND -> 1.5 -> 3.02 OE-A -> 3.02 OE-B -> 3.03 OE-A -> 3.03OE-A' -> 3.03 OE-B -> 3.10 OE-A -> 3.10 OE-A' -> 3.30 OE-A.

08-16-2007, 08:53 PM	#6
bhunter Developer Join Date: Dec 2006 Location: Sydney, Australia Posts: 163 Trader Feedback: 0	Thanks man but here lies my problem, I am trying to do this in VB.NET, not C I found this code ages ago called ExtractPic but again, it is in C . __________________ PSP History Bought Dec 15th 2006 @ 2.6 -> 2.71 HEND -> 1.5 -> 3.02 OE-A -> 3.02 OE-B -> 3.03 OE-A -> 3.03OE-A' -> 3.03 OE-B -> 3.10 OE-A -> 3.10 OE-A' -> 3.30 OE-A.

08-16-2007, 11:21 PM	#8
bhunter Developer Join Date: Dec 2006 Location: Sydney, Australia Posts: 163 Trader Feedback: 0	Tis all good, I will have a poke around the net and see what I can discover . Thanks to both of you for your help, I at least have a starting point for my searches now . __________________ PSP History Bought Dec 15th 2006 @ 2.6 -> 2.71 HEND -> 1.5 -> 3.02 OE-A -> 3.02 OE-B -> 3.03 OE-A -> 3.03OE-A' -> 3.03 OE-B -> 3.10 OE-A -> 3.10 OE-A' -> 3.30 OE-A.

08-28-2007, 05:46 PM	#9
bhunter Developer Join Date: Dec 2006 Location: Sydney, Australia Posts: 163 Trader Feedback: 0	A little bit of headway on this: Code: PSPGame.Image = System.Drawing.Bitmap.FromStream(StreamVar) Seems to be what I have been looking for for ages. Funny that I stumbled upon it whilst trying to port an arcade emu from VB5 to .NET Next I need to work out how to read the header from a CSO __________________ PSP History Bought Dec 15th 2006 @ 2.6 -> 2.71 HEND -> 1.5 -> 3.02 OE-A -> 3.02 OE-B -> 3.03 OE-A -> 3.03OE-A' -> 3.03 OE-B -> 3.10 OE-A -> 3.10 OE-A' -> 3.30 OE-A.

08-16-2007, 06:59 PM	#2
Art Bush Programmer Join Date: Nov 2005 Posts: 3,557 Trader Feedback: 0	Why not search for the header then read in data from there? That's how I read a PNG file from an eboot (the icon0.PNG). I must admit it is a known size though. Bitmaps wouldn't be a problem there because you can calculate the size given the dimensions (which are in it's file header). I imagine other image formats give similar info in their file headers? Art.

08-16-2007, 08:24 PM	#5
Art Bush Programmer Join Date: Nov 2005 Posts: 3,557 Trader Feedback: 0	Once you have the image in an array (which you have) you're set. Particularly if it's a PNG. The sample I posted at the end of this page: http://forums.qj.net/f-developers-du...005/page3.html demonstrates how to use it. You need to replace your graphics.c/h with the one in the zip package because it contains Shine's function to load images from memory (what you want to do). Reading from a cso... dunno. Let me know if you find out. There must be some code to read them in the forbidden leaked firmware files so that they can be played. Art.

08-28-2007, 06:50 PM	#10
Art Bush Programmer Join Date: Nov 2005 Posts: 3,557 Trader Feedback: 0	I think you would need a zip library for that. Not sure, but I think cso are zipped.

08-28-2007, 07:22 PM	#11
bhunter Developer Join Date: Dec 2006 Location: Sydney, Australia Posts: 163 Trader Feedback: 0	Excelent, thankyou . If I can cover some ground on this over the weekend then maybe a new version soon __________________ PSP History Bought Dec 15th 2006 @ 2.6 -> 2.71 HEND -> 1.5 -> 3.02 OE-A -> 3.02 OE-B -> 3.03 OE-A -> 3.03OE-A' -> 3.03 OE-B -> 3.10 OE-A -> 3.10 OE-A' -> 3.30 OE-A.

08-29-2007, 03:36 AM	#12
flatmush Join Date: Mar 2007 Location: England Posts: 87 Trader Feedback: 0	I used to be a vb6 programmer, trust me at this point it would make your life easier to just learn C/C++. VB isn't very well suited to low-ish level stuff like this.

QJ.net Game Discussion - PSP, Xbox, Wii, PS3, PSP Homebrew, and PSP Guides

Anyone know how to read an image from an eboot / iso / cso etc?