mc_kibel:
I tried to find a way how to draw images on screen without putchar.
And I found it
I didn't want to improve algorithm (maybe no time, maybe I'm not so good programmer), so image must be:
+reversed in vertical
+reversed in horizontal.
It caused by .bmp file format. Colors are written from bottom to top.
So image must be like this:
Bmp header length is 0x36.
So I'm starting to read data after the header and I'm writting them in an array.
Код:
#include "..\\include\Lib_Clara.h"
#include "..\\include\Dir.h"
#define fseek lseek
int fpos = 0x36;
int bmp[320*320];
(...)
int fsize (int file)
{
int len = fseek (file,0,2);
debug_printf ("\n len: %d \n", len);
fseek (file,0,0);
return (len);
}
int _fgetc (int file)
{
char tmp;
fread(file,&tmp,1);
fseek (file,++fpos,0);
return (tmp);
}
int MyGuiOnCreate(DISP_OBJ *db)
{
gc = get_DisplayGC();
int f = fopen (L"/card/other/Ex1.bmp",WA_Read,0x180);
int filesize = fsize (f);
fseek (f,fpos,0);
int bmppos = 0;
while (fpos < filesize-10)
{
int b = _fgetc (f);
int g = _fgetc (f);
int r = _fgetc (f);
int color = 0xFF000000 + r * 0x10000 + g * 0x100 + b;
bmp[bmppos] = color;
bmppos++;
//debug_printf ("\n --->>>>color: #%X \n",color);
}
//redr_timer=Timer_Set(10,onRedrTimer,0);
return 1;
}
(....)
void MyGuiOnRedraw(DISP_OBJ *db,int ,int ,int )
{
GC_WritePixels(gc, 0, 0, 240, 320, bmp );
}
(...)
#include "..\\include\Dir.h"
#define fseek lseek
int fpos = 0x36;
int bmp[320*320];
(...)
int fsize (int file)
{
int len = fseek (file,0,2);
debug_printf ("\n len: %d \n", len);
fseek (file,0,0);
return (len);
}
int _fgetc (int file)
{
char tmp;
fread(file,&tmp,1);
fseek (file,++fpos,0);
return (tmp);
}
int MyGuiOnCreate(DISP_OBJ *db)
{
gc = get_DisplayGC();
int f = fopen (L"/card/other/Ex1.bmp",WA_Read,0x180);
int filesize = fsize (f);
fseek (f,fpos,0);
int bmppos = 0;
while (fpos < filesize-10)
{
int b = _fgetc (f);
int g = _fgetc (f);
int r = _fgetc (f);
int color = 0xFF000000 + r * 0x10000 + g * 0x100 + b;
bmp[bmppos] = color;
bmppos++;
//debug_printf ("\n --->>>>color: #%X \n",color);
}
//redr_timer=Timer_Set(10,onRedrTimer,0);
return 1;
}
(....)
void MyGuiOnRedraw(DISP_OBJ *db,int ,int ,int )
{
GC_WritePixels(gc, 0, 0, 240, 320, bmp );
}
(...)
It takes some second to write every color into an array.
I hope it will be useful for elf developers.
This idea is my own idea, maybe it's stupid. But it can surely be improved (I think it won't be a problem to set 0xFF000000 as alpha-channel). I tested this on some bitmaps, saved in 24bit :)
[ Редактировано mc_kibel в 25.5.10 20:51 ]
[ Редактировано mc_kibel в 26.5.10 17:39 ]