Hacking EZ-Trim+

[TrolleyDave]

Nice app : ) Very fast with overwrite method, seems around as fast as mine

(haven't compared). However, I noticed it's extremely slow when not overwriting, (in par with other trimmers other than mine). What block size are you using for loading/writing the files?

I'm using 64k blocks I think, I'm going to work on the app this weekend so I'll double check then. It's basically a Reset(F,1) and a BlockRead(F,Buff,SizeOf(Buff),BytesRead) where Buff is Array[0..65535] Of Byte. Should I be doing it differently? Thanks for your help Brian mate!

 

[TrolleyDave]

Sorry for not updating this in ages, gonna do a blitz on it this weekend.

 

[Azimuth]

Its seems to be trimming off 6 extra bytes on games with a wifi block. How are you detecting the wifi block(if you don't mind me asking)?

 

[TrolleyDave]

I seek to the end of the file (the actual_cart_size info in the header), scan something like 10 bytes and if I hit a non-$00 or non-$ff then I assume it's a wifi block and keep x (blank byte count) bytes + 128 bytes. How big should the wifi block be?

To be honest I've probably made a typo in the calculations. Thanks for pointing it out, it means it's wrong in R4 Commander as well.

 

[Azimuth]

Wifi blocks are 136 bytes(after the actual rom size), just scan the whole 136 bytes looking for anything other than FF or 00, thats a sure way of detecting the wifi block.

 

[TrolleyDave]

Wifi blocks are 136 bytes(after the actual rom size), just scan the whole 136 bytes looking for anything other than FF or 00, thats a sure way of detecting the wifi block.

That would explain the size difference, thanks for the info. The reason I did the scan and then 136 bytes is I noticed some of them started directly after then end of the rom and sometimes there was 1 or 2 blank bytes, I must've just been looking at the data wrong.

Will get the wifi detection fixed this weekend. Thanks again mate.

 

[TrolleyDave]

v0.01 Released
------------------
First official release.

+ Wifi block size fixed
+ Window size adjusted
+ Sped up trimming

Downloads availabe on my blog

 

[naes]

Thanks, so far all my games have been working fine. I hope there aren't any bugs with this!


Well, even if there is, I have back ups of back ups... so I'm fine.

 

[zardoz]

I have tried the new 0.01 version but found that there is a problem with the internal URL that you are using to get the updates for the release list. As a result, the list is not updated and the renamer causes the program to error.

The list is however downloaded from R4-commander, so I suspect you just forgot to update the embedded URL.

Hope this helps...

Z

 

[TrolleyDave]

I have tried the new 0.01 version but found that there is a problem with the internal URL that you are using to get the updates for the release list. As a result, the list is not updated and the renamer causes the program to error.

The list is however downloaded from R4-commander, so I suspect you just forgot to update the embedded URL.

Hope this helps...

Z

That helps alot, thanks! I'll fix that shortly.

EDIT: Fixed! It should work fine now, you don't need to upgrade the program. It was a spelling mistake on the server side rather than the app.

 

[dohclude]

This program works great for me, I've only found one bug. When I use the "Trim & Rename" option and my roms are compressed inside of "7zip" archives and my output directory is different than the input, it renames the input 7z file and adds an extra period to the name. For instance, if the file was "ROM.7z", after it trims and renames the input file is now called "ROM..7z" and I have to go back through all of the roms that were trimmed and remove the extra dot. Otherwise it seems to work great. Thanks!

 

[TrolleyDave]

No worries, I'll try and get that fixed tomorrow. Cheers for reporting it.

 

[TrolleyDave]

This program works great for me, I've only found one bug. When I use the "Trim & Rename" option and my roms are compressed inside of "7zip" archives and my output directory is different than the input, it renames the input 7z file and adds an extra period to the name. For instance, if the file was "ROM.7z", after it trims and renames the input file is now called "ROM..7z" and I have to go back through all of the roms that were trimmed and remove the extra dot. Otherwise it seems to work great. Thanks!

Fixed!

 

[dohclude]

lol, now it renames my 7zip file to just ".7z" and names the output rom ".NDS". If I try to trim more than one rom at a time, it overwrites the previous ".7z" and ".NDS" files. I lost about 10 roms from my collection, now I have to remember which ones they are and replace them.

 

[TrolleyDave]

lol, now it renames my 7zip file to just ".7z" and names the output rom ".NDS". If I try to trim more than one rom at a time, it overwrites the previous ".7z" and ".NDS" files. I lost about 10 roms from my collection, now I have to remember which ones they are and replace them.

Damn, it was working ok when I tested it. Will look into it and try to get an update out shortly. Sorry about that.

EDIT : I can't seem to get the same result as you. What games did it happen on?

 

[dohclude]

well, it's a bit difficult to remember because I did about 10 of them at once and it renamed about 5-6 of them like that, each overwriting the previous. The last one I can confirm was Lunar Knights (i think it's 0847).

 

[dohclude]

I had a look in the "NDSRELS.INI" file and it seems like this rom isn't in there. I guess this problem only happens when the rom can't be referenced in the ini file. In this case it should just leave the filename alone instead of renaming it with no name and only an extension.

 

[TrolleyDave]

I had a look in the "NDSRELS.INI" file and it seems like this rom isn't in there. I guess this problem only happens when the rom can't be referenced in the ini file. In this case it should just leave the filename alone instead of renaming it with no name and only an extension.

Nice one. I thought I'd put stuff in to check for the game not existing in the release ini file, I'll go back in and fix it. I've just checked the NDSRELS.INI in R4 Commander and the Lunar Knights stuff is definitely in there, can you try redownloading the release list through EZ-Trim and see if's in there after redownloading? Cheers for the feedback.

 

[dohclude]

no problem. I just tried re-downloading the release list and I'm getting the exact same list as before, without 0847.

 

[dohclude]

i just checked the NDSRELS.INI file from r4 commander and it looks like it is 784KB while the one that ez-trim downloads is only 234KB. It cuts off at release 580 i believe.