//Decompress byte array into aBitmap with help of width, length and bitdepth
public static AccessibleBitmapBytewise Decompress(byte[] inBytes, AccessibleBitmapBytewise inBitmap, out byte[] restBytes, int byteLayer)
{
//Create a BitStreamFIFO class from the incoming bytes, becouse the decompressor for integer arrays uses it
BitStreamFIFO layerBits = new BitStreamFIFO(inBytes);
//Decompress the incoming data to an array of integers
int[] layerByteArray = VaryingIntArrayCompressor.Decompress(ref layerBits);
//Add the data from the array of integers to the incoming bitmap
//Loop trough all lines of pixels
for (int y = 0; y < inBitmap.height; y++)
{
//Loop trough all pixels in this line
for (int x = 0; x < inBitmap.width; x++)
{
//Write the integer of this channel from the correct position in the input array to the current pixel
inBitmap.SetPixelByte(x, y, byteLayer, (byte)layerByteArray[y * inBitmap.width + x]);
}
}
//Remove the bytes used for this channel from the incoming byte array and pass the rest of them to the next channel
restBytes = new byte[layerBits.Length / 8];
Array.Copy(inBytes, inBytes.Length - restBytes.Length, restBytes, 0, restBytes.Length);
//Return the modified bitmap so the rest of the channels can be added to complete it
return(inBitmap);
}
//Decompress byte array into aBitmap with help of width, length and bitdepth
public static AccessibleBitmapBytewise Decompress(byte[] inBytes, AccessibleBitmapBytewise inBitmap, out byte[] restBytes, int byteLayer)
{
//Create a BitStream from the input bytes becouse the decompress functions need this as input
BitStreamFIFO bitStream = new BitStreamFIFO(inBytes);
//Decompress the BitStream to a queue of integers for the lengths
Queue <int> pixels = new Queue <int>(VaryingIntArrayCompressor.Decompress(ref bitStream));
//Decompress the BitStream to a queue of integers for the pixel values
Queue <int> runs = new Queue <int>(VaryingIntArrayCompressor.Decompress(ref bitStream));
//Initialize
int pixelsToGo = runs.Dequeue() + 1; //The amount of pixels that should be written before the next run starts
byte currentPixel = (byte)pixels.Dequeue(); //The pixel value of the current run: initialize with the first pixel value
//Loop trough all lines of pixels
for (int y = 0; y < inBitmap.height; y++)
{
//Loop trough all pixels in this line
for (int x = 0; x < inBitmap.width; x++)
{
//Set the bit of the current pixel to the value of the current run
inBitmap.SetPixelByte(x, y, byteLayer, currentPixel);
//Decrease the length of the current run
pixelsToGo--;
//If the end of the run has been reached
if (pixelsToGo == 0 && (x * y != (inBitmap.height - 1) * (inBitmap.width - 1)))
{
//Read the new run length from the BitStream
pixelsToGo = runs.Dequeue() + 1;
//Take a byte from the queue of pixel values to put in the current channel
currentPixel = (byte)pixels.Dequeue();
}
}
}
//Remove the bytes used for this channel from the incoming byte array and pass the rest of them to the next channel
restBytes = new byte[bitStream.Length / 8];
Array.Copy(inBytes, inBytes.Length - restBytes.Length, restBytes, 0, restBytes.Length);
//Return the image as aBitmap
return(inBitmap);
}
//Decompress byte array into aBitmap with help of width, length and bitdepth
public static AccessibleBitmapBytewise Decompress(byte[] inBytes, AccessibleBitmapBytewise inBitmap, out byte[] restBytes, int byteLayer)
{
//Add the data from this stream to the incoming bitmap
//Loop trough all lines of pixels
for (int y = 0; y < inBitmap.height; y++)
{
//Loop trough all pixels in this line
for (int x = 0; x < inBitmap.width; x++)
{
//Write the byte of this channel from the correct position in the input array to the current pixel
inBitmap.SetPixelByte(x, y, byteLayer, inBytes[y * inBitmap.width + x]);
}
}
//Remove the bytes used for this channel from the incoming byte array and pass the rest of them to the next channel
restBytes = new byte[inBytes.Length - (inBitmap.width * inBitmap.height)];
Array.Copy(inBytes, inBitmap.width * inBitmap.height, restBytes, 0, restBytes.Length);
//Return the modified bitmap so the rest of the channels can be added to complete it
return(inBitmap);
}
