ELEC2645 (2018/19) / Mbed 2 deprecated el17st

Game for Leeds University Gamepad for the FRDM-K64F: Game is a RPG Horror Title.

Dependencies:   mbed FATFileSystem

N5110_Modded/Bitmap.cpp@21:f3b0ce18b44f, 2019-05-09 (annotated)

Committer:
rottenegg
Date:
Thu May 09 06:22:53 2019 +0000
Revision:
21:f3b0ce18b44f
Parent:
18:14e5391beccf
Child:
26:716bcd47f3ca
Game_Manager: 20 lines per Function Achevied; Documentation Updated along with Inline Comments

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rottenegg 18:14e5391beccf 1 #include "Bitmap.h"
rottenegg 21:f3b0ce18b44f 2 Serial d(USBTX,USBRX);
rottenegg 18:14e5391beccf 3
rottenegg 18:14e5391beccf 4 //Total New Process time = 0.04 Seconds (still a bit long)
rottenegg 18:14e5391beccf 5 //Image data is Stored in DWORDS (32-bits) not Bytes (8-bits)
rottenegg 18:14e5391beccf 6 Bitmap::Bitmap(PinName const scePin,
rottenegg 18:14e5391beccf 7 PinName const rstPin,
rottenegg 18:14e5391beccf 8 PinName const dcPin,
rottenegg 18:14e5391beccf 9 PinName const mosiPin,
rottenegg 18:14e5391beccf 10 PinName const sclkPin,
rottenegg 18:14e5391beccf 11 PinName const ledPin)
rottenegg 18:14e5391beccf 12 :
rottenegg 18:14e5391beccf 13 N5110(scePin, rstPin, dcPin, mosiPin, sclkPin, ledPin)
rottenegg 18:14e5391beccf 14 {};
rottenegg 18:14e5391beccf 15
rottenegg 18:14e5391beccf 16 void Bitmap::renderBMP(const char *path, unsigned int const x, unsigned int const y) {
rottenegg 18:14e5391beccf 17 FILE *bmp = fopen(path,"r");
rottenegg 21:f3b0ce18b44f 18 if (bmp == NULL) {
rottenegg 21:f3b0ce18b44f 19 d.printf("fail");
rottenegg 21:f3b0ce18b44f 20 }
rottenegg 18:14e5391beccf 21 unsigned char *buffer = (unsigned char*)std::malloc(4 * sizeof(unsigned char));
rottenegg 21:f3b0ce18b44f 22 this->readDIB(bmp); //Reading DIB header
rottenegg 18:14e5391beccf 23 unsigned short int dcount = (width / 32) + 1; //Counting DWORDS required per Row of Image
rottenegg 18:14e5391beccf 24 fseek(bmp,offbits,SEEK_SET);
rottenegg 18:14e5391beccf 25 std::bitset<32> bits;
rottenegg 18:14e5391beccf 26 offbits = 0;
rottenegg 18:14e5391beccf 27 row = 0;
rottenegg 18:14e5391beccf 28 colomn = 0;
rottenegg 18:14e5391beccf 29 for (unsigned int dwcount = 1; dwcount < ((dcount*height) + 1); dwcount++) {
rottenegg 18:14e5391beccf 30 this->swapEndian(bmp, buffer, bits); //Correcing Machine Endiness
rottenegg 18:14e5391beccf 31 if (dwcount % dcount == 0) {
rottenegg 18:14e5391beccf 32 this->halfLoop(x,y,bits);
rottenegg 18:14e5391beccf 33 } else {
rottenegg 18:14e5391beccf 34 this->fullLoop(x,y,bits);
rottenegg 18:14e5391beccf 35 }
rottenegg 18:14e5391beccf 36 }
rottenegg 18:14e5391beccf 37 std::fclose(bmp);
rottenegg 21:f3b0ce18b44f 38 free(buffer);
rottenegg 18:14e5391beccf 39 }
rottenegg 18:14e5391beccf 40
rottenegg 18:14e5391beccf 41 void Bitmap::readDIB(FILE *bmp) {
rottenegg 18:14e5391beccf 42 std::fseek(bmp,10,SEEK_SET);
rottenegg 21:f3b0ce18b44f 43 std::fread(&offbits,4,1,bmp); //Bytes to skip to get to data block
rottenegg 18:14e5391beccf 44 std::fseek(bmp,18,SEEK_SET);
rottenegg 21:f3b0ce18b44f 45 std::fread(&width,4,1,bmp); //Width of Image
rottenegg 18:14e5391beccf 46 std::fseek(bmp,22,SEEK_SET);
rottenegg 21:f3b0ce18b44f 47 std::fread(&height,4,1,bmp); //Height of image
rottenegg 18:14e5391beccf 48 }
rottenegg 18:14e5391beccf 49
rottenegg 18:14e5391beccf 50 void Bitmap::swapEndian(FILE *bmp, unsigned char *buffer, std::bitset<32> &bits) {
rottenegg 18:14e5391beccf 51 std::fread(buffer,1,4,bmp);
rottenegg 18:14e5391beccf 52 //Endian Swap
rottenegg 18:14e5391beccf 53 bits = buffer[0];
rottenegg 18:14e5391beccf 54 bits = (bits << 8) | (std::bitset<32>)buffer[1];
rottenegg 18:14e5391beccf 55 bits = (bits << 8) | (std::bitset<32>)buffer[2];
rottenegg 18:14e5391beccf 56 bits = (bits << 8) | (std::bitset<32>)buffer[3];
rottenegg 18:14e5391beccf 57 }
rottenegg 18:14e5391beccf 58
rottenegg 18:14e5391beccf 59 void Bitmap::halfLoop(unsigned const int x, unsigned const int y, std::bitset<32> bits) {
rottenegg 18:14e5391beccf 60 //First Loop only reads remaining bits in a DWORD and skips the Packing bits
rottenegg 18:14e5391beccf 61 for (offbits = 0; offbits < (width % 32); offbits++){
rottenegg 18:14e5391beccf 62 //Bit Loop to print out pixel data but skips the packing bits
rottenegg 18:14e5391beccf 63 this->renderDWORD(bits,x,y);
rottenegg 18:14e5391beccf 64 }
rottenegg 18:14e5391beccf 65 row++;
rottenegg 18:14e5391beccf 66 colomn = 0;
rottenegg 18:14e5391beccf 67 }
rottenegg 18:14e5391beccf 68
rottenegg 18:14e5391beccf 69 void Bitmap::fullLoop(unsigned const int x, unsigned const int y, std::bitset<32> bits) {
rottenegg 18:14e5391beccf 70 //Second Loop reads the full DWORD
rottenegg 18:14e5391beccf 71 for (offbits = 0; offbits < 32; offbits++) {
rottenegg 18:14e5391beccf 72 this->renderDWORD(bits,x,y);
rottenegg 18:14e5391beccf 73 }
rottenegg 21:f3b0ce18b44f 74 }
rottenegg 21:f3b0ce18b44f 75
rottenegg 21:f3b0ce18b44f 76 //Aiding Funtion for fullloop and halfloop
rottenegg 21:f3b0ce18b44f 77 void Bitmap::renderDWORD(std::bitset<32> bits, unsigned int const x, unsigned int const y) {
rottenegg 21:f3b0ce18b44f 78 bool state;
rottenegg 21:f3b0ce18b44f 79 if (bits[31 - offbits] == 1) {
rottenegg 21:f3b0ce18b44f 80 state = false;
rottenegg 21:f3b0ce18b44f 81 } else {
rottenegg 21:f3b0ce18b44f 82 state = true;
rottenegg 21:f3b0ce18b44f 83 }
rottenegg 21:f3b0ce18b44f 84 this->setPixel((colomn + x) ,(row + y),state);
rottenegg 21:f3b0ce18b44f 85 colomn++;
rottenegg 18:14e5391beccf 86 }