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#1 2008-07-01 04:43:48
- Crayon
- Bad Mother Fucker
Screenshot function for GRRLIB 3.0
Because of Redshade's help I was able to make a screenshot function for GRRLIB 3.0.
First you need to include this:
Code:
#include <fat.h>
Add this function to GRRLIB.c:
Code:
/**
* Make a PNG screenshot on the SD card.
* @param File Name of the file to write.
* @return True if every thing worked, false otherwise.
*/
bool GRRLIB_ScrShot(const char* File)
{
IMGCTX pngContext;
int ErrorCode = -1;
if(fatInitDefault() && (pngContext = PNGU_SelectImageFromDevice(File)))
{
ErrorCode = PNGU_EncodeFromYCbYCr(pngContext, 640, 480, xfb[fb], 0);
PNGU_ReleaseImageContext(pngContext);
if(!fatUnmount(PI_INTERNAL_SD))
{ // I can only hope it's better than nothing
fatUnsafeUnmount(PI_INTERNAL_SD);
}
}
return !ErrorCode;
}Add the definition to GRRLIB.h:
Code:
bool GRRLIB_ScrShot(const char*);
Called it like that in your program:
Code:
if(GRRLIB_ScrShot("Screenshot.png"))
strcpy(text, "A screenshot was taken!!!");
else
strcpy(text, "Screenshot did not work!!!");Useful links: libOGC Documentation, libOGC Repository, GRRLIB Documentation, GRRLIB Repository, #GRRLIB on IRC
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#2 2008-07-01 14:20:08
- JustWoody
- Member
Re: Screenshot function for GRRLIB 3.0
Nice one Crayon I was just about to look at this so you saved me a job, cheers!
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#3 2008-07-01 18:43:07
- RedShade
- Member
Re: Screenshot function for GRRLIB 3.0
You are mounting and unmounting fat throughout the application?
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#4 2008-07-01 23:27:47
- Crayon
- Bad Mother Fucker
Re: Screenshot function for GRRLIB 3.0
RedShade wrote:
You are mounting and unmounting fat throughout the application?
That's part of the code by feesh on this page:
http://wiibrew.org/wiki/Talk:Developmen … Shot.28.29
Because without the fatUnmount I think you can't make multiple screenshot, it only work once.
The solution would be to initialize fat outside GRRLIB. Anyway GGRLIB is a video library.
Useful links: libOGC Documentation, libOGC Repository, GRRLIB Documentation, GRRLIB Repository, #GRRLIB on IRC
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#5 2008-09-07 00:24:19
- CashMan
- Member
Re: Screenshot function for GRRLIB 3.0
this is a very good function Crayon, thanks !!
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#6 2008-09-10 09:29:51
- JustWoody
- Member
Re: Screenshot function for GRRLIB 3.0
what about making this compatible with PAL by using the rmode to get the size of the screen rather than hard coding it to 640x480?
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#7 2008-12-11 06:53:52
- Crayon
- Bad Mother Fucker
Re: Screenshot function for GRRLIB 3.0
With the new version of libfat the unmount command is not necessary anymore (I think), so the function should look like this:
Code:
/**
* Make a PNG screenshot on the SD card.
* @param File Name of the file to write.
* @return True if every thing worked, false otherwise.
*/
bool GRRLIB_ScrShot(const char* File)
{
IMGCTX pngContext;
int ErrorCode = -1;
if(fatInitDefault() && (pngContext = PNGU_SelectImageFromDevice(File)))
{
ErrorCode = PNGU_EncodeFromYCbYCr(pngContext, 640, 480, xfb[fb], 0);
PNGU_ReleaseImageContext(pngContext);
}
return !ErrorCode;
}The new unmount function is:
Code:
/* Unmount the partition specified by name. If there are open files, it will attempt to synchronise them to disc. */ extern void fatUnmount (const char* name);
Last edited by Crayon (2008-12-11 07:05:53)
Useful links: libOGC Documentation, libOGC Repository, GRRLIB Documentation, GRRLIB Repository, #GRRLIB on IRC
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