File content as of revision 0:1c8761215497:

#include "drawBitmap.h"
#include "stm32746g_discovery_lcd.h"

void drawBitmap(int Xpos, int Ypos, const uint8_t *pbmp, bool transparent)
{
    uint32_t index = 0, width = 0, height = 0, bit_pixel = 0;
    uint32_t *couleur;

    /* Get bitmap data address offset */
    index = pbmp[10] + (pbmp[11] << 8) + (pbmp[12] << 16)  + (pbmp[13] << 24);

    /* Read bitmap width */
    width = pbmp[18] + (pbmp[19] << 8) + (pbmp[20] << 16)  + (pbmp[21] << 24);

    /* Read bitmap height */
    height = pbmp[22] + (pbmp[23] << 8) + (pbmp[24] << 16)  + (pbmp[25] << 24);

    /* Read bit/pixel */
    bit_pixel = pbmp[28] + (pbmp[29] << 8);

    int xSize = BSP_LCD_GetXSize(), ySize = BSP_LCD_GetYSize();
    couleur = (uint32_t *)&pbmp[index];
    int yDebut;
    if (Ypos+height>=ySize) {
        yDebut = ySize-1;
        couleur += width*(Ypos+height-ySize);
    } else {
        yDebut = Ypos+height-1;
    }
    int yFin = (Ypos<0) ? 0 : Ypos;
    int xDebut, xDeltaDebut;
    if (Xpos<0) {
        xDebut = 0;
        xDeltaDebut = -Xpos;
    } else {
        xDebut = Xpos;
        xDeltaDebut = 0;
    }
    int xFin, xDeltaFin;
    if (Xpos+width>xSize) {
        xFin = xSize-1;
        xDeltaFin = Xpos+width - xSize;
    } else {
        xFin = Xpos+width-1;
        xDeltaFin = 0;
    }
    
    for (int ligne=yDebut; ligne>=yFin; ligne--) {
        couleur += xDeltaDebut;
        for (int colonne=xDebut; colonne<=xFin; colonne++) {
            if (transparent & ((*couleur & 0xFF000000)==0xFF000000)) BSP_LCD_DrawPixel(colonne, ligne, *couleur);
            couleur++;
        }
        couleur += xDeltaFin;
    }
}