graphics2d.c File Reference

#include "graphics2d.h"

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Macros
#define	NDEBUG

Functions
unsigned char *	G2ConvertFBToRITFormat (framebuffer fb)
void	G2Draw (framebuffer fb)

Variables
unsigned char	g_PackedDeviceBuffer [RIT_FB_WIDTH *RIT_FB_HEIGHT] = {0}
	The One Buffer To Rule Them All (TM) More...

Macro Definition Documentation

#define NDEBUG

Definition at line 6 of file graphics2d.c.

Function Documentation

unsigned char* G2ConvertFBToRITFormat

(

framebuffer

)

Unpack fb into in the format understood by RIT functions.

Parameters

fb	Framebuffer to convert into a char*

Returns

fb in RITFormat (unpacked char* array)

Definition at line 23 of file graphics2d.c.

References g_PackedDeviceBuffer, OLED_HEIGHT, OLED_WIDTH, and RIT_FB_WIDTH.

Referenced by demonstrateClock(), demonstrateDrawShapes(), demonstrateDrawString(), G2Draw(), and main().

                                                      {

  /* i is x, j is y */
  unsigned char i, j;
  unsigned char a, b;

#ifndef NDEBUG
  printf("%s Unpacking framebuffer...", __FUNCTION__);
#endif

  for(j=0; j<OLED_HEIGHT; ++j) {
    for(i=0; i<OLED_WIDTH; i+=2) {
      a = fb[i][j];
      b = fb[i+1][j];

      g_PackedDeviceBuffer[(i/2)+j*RIT_FB_WIDTH] = (a<<4) | (b&0xF);
    }
  }

#ifndef NDEBUG
  printf("%s Done unpacking framebuffer...", __FUNCTION__);
#endif

  return g_PackedDeviceBuffer;
}

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void G2Draw

(

framebuffer

)

Draw (unpacked) fb on the OLED.

Parameters

fb	Framebuffer type (char**)

Returns

void

Definition at line 49 of file graphics2d.c.

References G2ConvertFBToRITFormat(), g_PackedDeviceBuffer, OLED_HEIGHT, and OLED_WIDTH.

                            {

  G2ConvertFBToRITFormat(fb);
#ifndef __GNUC__
  RIT128x96x4ImageDraw(g_PackedDeviceBuffer, 0, 0, OLED_WIDTH, OLED_HEIGHT);
#endif
}

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Variable Documentation

g_PackedDeviceBuffer = {0}

The One Buffer To Rule Them All (TM)

This buffer is what we will use to write to the display. It is created here so that it can be easily passed around to those who need it and it doesn't need to keep being malloc'd all the time.

Definition at line 21 of file graphics2d.c.

Referenced by G2ConvertFBToRITFormat(), and G2Draw().