CC Advanced Peripheral Glasses Display bmp

-- Function to read an integer from bytes in little-endian format
local function readIntLE(handle, bytes)
    local data = handle.read(bytes)
    local result = 0
    for i = 1, bytes do
        result = result + string.byte(data:sub(i, i)) * (256 ^ (i - 1))
    end
    return result
end

-- Function to read the BMP file and convert it to a hex color table
local function bmpToHexColorTable(filename)
    local file = fs.open(filename, "rb")
    if not file then
        error("File not found: " .. filename)
    end

    -- BMP Header Parsing
    file.read(18) -- Skip BMP signature and other header fields we don't need
    local width = readIntLE(file, 4)
    local height = readIntLE(file, 4)
    file.read(2) -- Skip 2 bytes of color planes
    local bpp = readIntLE(file, 2) -- Bits per pixel (should be 24 for RGB)
    local pixelDataOffset = readIntLE(file, 4) -- Offset where pixel data begins

    if bpp ~= 24 then
        error("Only 24-bit BMP files are supported")
    end

    -- Move to the start of pixel data
    file.seek("set", pixelDataOffset)

    -- Create the color table to store hex colors
    local colorTable = {}

    -- Read each pixel in BMP
    for y = height - 1, 0, -1 do
        colorTable[y] = {}
        for x = 0, width - 1 do
            -- BMP stores color as BGR in 24-bit format
            local b = file.read()
            local g = file.read()
            local r = file.read()
            if tonumber(r)>151   then
                r=r
            end

            -- Convert RGB to hex color
            local hexColor = tonumber(string.format("0x%02X%02X%02X", r, g, b))
            colorTable[y][x] = hexColor
        end

        -- Each row is padded to a multiple of 4 bytes
        local padding = (4 - (width * 3) % 4) % 4
        file.read(padding)
    end

    file.close()
    return colorTable
end

-- Main code
local filename = "eevee.bmp" -- Change this to your BMP file path
local colorTable = bmpToHexColorTable(filename)
print("read File done")
local g=peripheral.wrap("back")
g.autoUpdate(false)
g.clear()
-- Print the hex color table
local size=2

for y, row in pairs(colorTable) do
    for x, hexColor in pairs(row) do
        --print(string.format("Pixel (%d, %d): %s", x, y, hexColor))
        g.createRectangle({x=x*size,y=y*size,maxX=x*size+size,maxY=y*size+size, color=hexColor})

    end
    g.update()
end