GP32 How To Save Screen As A 8bit Bmp Files

[yaouank]

Hi,

Is there any SDK or source code already typed and tested to save the 8bits screen and the palette of the gp32 as a 8bits bmp file ?

Or do I have to do it myself ? (and freely publish it once done, of course)

Thank you.

 

[Dalto]

Hi,

Is there any SDK or source code already typed and tested to save the 8bits screen and the palette of the gp32 as a 8bits bmp file ?

Or do I have to do it myself ? (and freely publish it once done, of course)

Thank you.

​

Which SDK are you using?

EDIT: Nevermind I checked and I only have code to save a 16-bit BMP. It is pretty easy to save a BMP though. Just make sure that you end all the lines on a 4 byte DWORD. (Although this should not be an issue if you are saving the whole framebuffer.)

If you run into any trouble I would be glad to help as I spent a lot time loading and saving BMP's while developing gpPaint.

 

[pea]

I would be interested in the code to save 16bpp screenbuffer to BMP. Do you have a function/lib handy?

 

[yaouank]

Which SDK are you using?

EDIT: Nevermind I checked and I only have code to save a 16-bit BMP. It is pretty easy to save a BMP though. Just make sure that you end all the lines on a 4 byte DWORD. (Although this should not be an issue if you are saving the whole framebuffer.)

If you run into any trouble I would be glad to help as I spent a lot time loading and saving BMP's while developing gpPaint.

​

I'm using the god old gp32 sdk (downloaded from the download section of http://www.devkit.tk/ )

Ok, I will try to do the biggest part myself and may contact you when it won't work.

 

[aquafish_]

//////////////////////////////////////////////////////////////////////////////////////
// void capturescreen16(GPDRAWSURFACE *gpdraws, char *path)
// save the screen gpdraws in path (24 bpp bmp) (for 16 bits mode)
//////////////////////////////////////////////////////////////////////////////////////

unsigned char bmp[320*240*3];

const unsigned char header[54] = {
66, 77, 54, 132, 3, 0, 0, 0, 0, 0, 54, 0, 0, 0, 40, 0, 
0, 0, 64, 1, 0, 0, 240, 0, 0, 0, 1, 0, 24, 0, 0, 0, 
0, 0, 0, 132, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
0, 0, 0, 0, 0, 0
};

void capturescreen16(GPDRAWSURFACE *gpdraws, char *path)
{
 F_HANDLE f2;
 unsigned short *image;
 int x, y;
 unsigned char r, v, b, i;


 image = (unsigned short*)gpdraws->ptbuffer;


 GpFileCreate(path, ALWAYS_CREATE, &f2);

 GpFileWrite(f2, &header, 54);


 for (x = 0; x < 320; x++)
  for (y = 0; y < 240; y++)
  {
   r = (image[y+(x*240)] >> 1) * 8;
   v = (image[y+(x*240)] >> 6) * 8;
   b = (image[y+(x*240)] >> 11) * 8;

   i = (image[y+(x*240)] << 7) >> 7;

   if (i == 1) // highlight bit ??
   {
    if (r < 255) r++;
    if (v < 255) v++;
    if (b < 255) b++;
   }

   bmp[(x+y*320)*3] = r;
   bmp[(x+y*320)*3+1] = v;
   bmp[(x+y*320)*3+2] = b;
  }

  GpFileWrite(f2, &bmp, sizeof(bmp));


  GpFileClose(f2);
}


//////////////////////////////////////////////////////////////////////////////////////
// void capturescreen8(GPDRAWSURFACE *gpdraws, char *path)
// save the screen gpdraws in path (24 bpp bmp) (for 8 bits mode)
//////////////////////////////////////////////////////////////////////////////////////

unsigned char bmp[320*240*3];

const unsigned char header[54] = {
66, 77, 54, 132, 3, 0, 0, 0, 0, 0, 54, 0, 0, 0, 40, 0, 
0, 0, 64, 1, 0, 0, 240, 0, 0, 0, 1, 0, 24, 0, 0, 0, 
0, 0, 0, 132, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
0, 0, 0, 0, 0, 0
};

void capturescreen8(GPDRAWSURFACE *gpdraws, char *path)
{
 F_HANDLE f2;
 unsigned char *image;
 int x, y;
 unsigned char r, v, b, i;
 long *pal = (long *)0x14a00400;

 image = (unsigned char*)gpdraws->ptbuffer;


 GpFileCreate(path, ALWAYS_CREATE, &f2);

 GpFileWrite(f2, &header, 54);


 for (x = 0; x < 320; x++)
  for (y = 0; y < 240; y++)
  {
   r = (pal[image[y+(x*240)]] >> 1) * 8;
   v = (pal[image[y+(x*240)]] >> 6) * 8;
   b = (pal[image[y+(x*240)]] >> 11) * 8;

   i = (pal[image[y+(x*240)]] << 7) >> 7;

   if (i == 1) // highlight bit ??
   {
    if (r < 255) r++;
    if (v < 255) v++;
    if (b < 255) b++;
   }

   bmp[(x+y*320)*3] = r;
   bmp[(x+y*320)*3+1] = v;
   bmp[(x+y*320)*3+2] = b;
  }

  GpFileWrite(f2, &bmp, sizeof(bmp));


  GpFileClose(f2);
}

why the hell do i put my code on my site..

 

[yaouank]

why the hell do i put my code on my site..

​

Merci, t'es un amour ! (I didn't thought to save the 8bits screen as a 24bits bmp. it may be a bit easier than saving it as a 8bits bmp)

By the way, what is the url of your site ?
http://www.egloo.fr.st send to http://www.gp32x.de/aquafish/ which is a blank page
http://www.gp32club.fr.st is a page full of news (not your developer's page)

 

[aquafish_]

(si t'a besoin de code absolument pour enregistrer en 8 bits, je peux te le faire ca change quasiment rien, pour le site, je l'ai supprimé pour l'instant en fait, mais t'aurai pu le chopper avant a+)

 

[yaouank]

Thank aquafish. It works (I never doubt of that ) !
telecran.fxe

00043896.BMP

[start] to save in GP:\GPMM\TELECRAN\
[joystick] and [A] to draw
[Shoulder] (several times) to erase

(yes I know, the naming of the picture is weird, generated by GpRand() )

 

[aquafish_]

Nice project ^_^