//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 AccessibleBitmapBitwise Decompress(BitStreamFIFO inBits, AccessibleBitmapBitwise inBitmap, out BitStreamFIFO restBits, int bitLayer)
{
//Read necessary info from BitStream
bool currentVal = inBits.ReadBool();
Queue <int> runs = new Queue <int>(VaryingIntArrayCompressor.Decompress(ref inBits));
int pixelsToGo = runs.Dequeue() + 1;
//Iterate trough all pixels
for (int y = 0; y < inBitmap.height; y++)
{
for (int x = 0; x < inBitmap.width; x++)
{
//Set the bit of the current pixel to the value of the current run
inBitmap.SetPixelBit(x, y, bitLayer, currentVal);
//Decrease the length of the current run & check if the end has bin reached
pixelsToGo--;
if (pixelsToGo == 0 && (x * y != (inBitmap.height - 1) * (inBitmap.width - 1)))
{
//Read the new run length from the BitStream & reverse the run bit
pixelsToGo = runs.Dequeue() + 1;
//Toggle bit value
currentVal = !currentVal;
}
}
}
//Return rest of bits & return bitmap
restBits = inBits;
return(inBitmap);
}
//Decompress byte array into aBitmap with help of width, length and bitdepth
public static AccessibleBitmap Decompress(byte[] source, int width, int height, int pixelBytes)
{
//Create a BitStream from the input bytes becouse the decompress functions need this as input
BitStreamFIFO bitStream = new BitStreamFIFO(source);
//Create an empty bitmap with the correct dimensions, where the decompressed pixels will be written to
AccessibleBitmap aBitmap = new AccessibleBitmap(width, height, pixelBytes);
//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 = new byte[pixelBytes]; //The pixel value of the current run: initialize with the correct amount of channels
//Loop trough all channels in the pixel of the current length
for (int i = 0; i < pixelBytes; i++)
{
//Take a byte from the queue of pixel values to put in the current channel
currentPixel[i] = (byte)pixels.Dequeue();
}
//Loop trough all lines of pixels
for (int y = 0; y < height; y++)
{
//Loop trough all pixels in this line
for (int x = 0; x < width; x++)
{
//Set the bit of the current pixel to the value of the current run
aBitmap.SetPixel(x, y, currentPixel);
//Decrease the length of the current run
pixelsToGo--;
//If the end of the run has been reached
if (pixelsToGo == 0 && (x * y != (height - 1) * (width - 1)))
{
//Read the new run length from the BitStream
pixelsToGo = runs.Dequeue() + 1;
//Loop trough all channels in the pixel of the current length
for (int i = 0; i < pixelBytes; i++)
{
//Take a byte from the queue of pixel values to put in the current channel
currentPixel[i] = (byte)pixels.Dequeue();
}
}
}
}
//Return the image as aBitmap
return(aBitmap);
}
//Decompress byte array into aBitmap with help of width, length and bitdepth
public static AccessibleBitmap Decompress(byte[] source, int width, int height, int pixelBytes)
{
BitStreamFIFO layerBits = new BitStreamFIFO(source);
int[] byteArray = VaryingIntArrayCompressor.Decompress(ref layerBits);
//Create aBitmap from pixel data
AccessibleBitmap aBitmap = new AccessibleBitmap(width, height, pixelBytes);
aBitmap.SetRawPixelBytes(Array.ConvertAll(byteArray, Convert.ToByte));
return(aBitmap);
}
//Compress aBitmap into byte array
public static byte[] Compress(AccessibleBitmap source)
{
//Initialize
List <int> distances = new List <int>(); //A list containing all the lenghts of same pixels
List <int> pixels = new List <int>(); //A list containing all the pixels that correspond to the lengths in 'distances' list
int tempDistance = -1; //The length of one run of bits with the same value, while it is not saved yet: -1 because it will be increased before the first check
byte[] lastPixel = source.GetPixel(0, 0); //The pixel of the last checked pixel, to compare with the current pixel: set value to the value of the first pixel so the first check will succeed
//Loop trough all lines of pixels
for (int y = 0; y < source.height; y++)
{
//Loop trough all pixels in this line
for (int x = 0; x < source.width; x++)
{
//Take value of the current pixel
byte[] currentPixel = source.GetPixel(x, y);
//If the value of the bit of this pixel matches the value of the bit of the previous pixel
if (currentPixel.SequenceEqual(lastPixel))
{
//Values are the same, so increase current run
tempDistance++;
}
else
{
//Values are not the same, so save the run
distances.Add(tempDistance);
pixels.AddRange(Array.ConvertAll(lastPixel, b => (int)b));
//Set the bit value for the next comparison to the bit value of this pixel
lastPixel = currentPixel;
//Reset the run length for the new run
tempDistance = 0;
}
}
}
//Save the last run becouse this never happens in the loop
distances.Add(tempDistance);
pixels.AddRange(Array.ConvertAll(lastPixel, b => (int)b));
//Compress the array of run lengths using different techniques
BitStreamFIFO pixelStream = VaryingIntArrayCompressor.Compress(pixels.ToArray());
//Compress the array of run lengths using different techniques
BitStreamFIFO lengthStream = VaryingIntArrayCompressor.Compress(distances.ToArray());
//Combine the compressed data of the runs with the compressed data of the pixel values, then return the BitStream
return(BitStreamFIFO.Merge(pixelStream, lengthStream).ToByteArray());
}
//Decompress byte array into aBitmap with help of width, length and bitdepth
public static AccessibleBitmapBitwise Decompress(BitStreamFIFO inBits, AccessibleBitmapBitwise inBitmap, out BitStreamFIFO restBits, int bitLayer)
{
//Decompress the incoming data to an array of integers
int[] ints = VaryingIntArrayCompressor.Decompress(ref inBits);
//Initialize
int intIndex = 0; //The index in the array of intergers, from where the next integer should be taken
bool[] tmpBools = new bool[8]; //The array of bits from which bits will be read to be applied to pixels
int boolIndex = 8; //The index in the array of bits, from where the next bit should be taken
//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++)
{
//If index is 8, all bits are used, so tmpBools should be renewed by using the next integer in the array of integers
if (boolIndex == 8)
{
//Reset the index to 0, so the next bit will be read from the start
boolIndex = 0;
//Convert the next integer in the array to a bool array, and write it to tmpBools
tmpBools = new BitStreamFIFO().IntToBoolArray(ints[intIndex], 8);
//Increase the index of the integer array, so the next integer will be read correctly
intIndex++;
}
//Write the bit of this channel from the correct position in the array of bits to the current pixel
inBitmap.SetPixelBit(x, y, bitLayer, tmpBools[boolIndex]);
//Increase index for next bit
boolIndex++;
}
}
//Set the output BitStream to the remaining bits of the input BitStream
restBits = inBits;
//Return the modified AccessibleBitmapBitwise so the rest of the channels can be added to complete it
return(inBitmap);
}
//Compress aBitmap into byte array
public static BitStreamFIFO Compress(AccessibleBitmapBitwise source, int bitLayer)
{
//Initialize
List <int> distances = new List <int>(); //A list containing all the lenghts of same bits
int tempDistance = -1; //The length of one run of bits with the same value, while it is not saved yet: -1 becouse it will be increased before the first check
bool lastVal = source.GetPixelBit(0, 0, bitLayer); //The bit value of the last checked pixel, to compare with the current pixel: set value to the value of the first pixel so the first check will succeed
//Loop trough all lines of pixels
for (int y = 0; y < source.height; y++)
{
//Loop trough all pixels in this line
for (int x = 0; x < source.width; x++)
{
//Take value of the current pixel
bool currentBool = source.GetPixelBit(x, y, bitLayer);
//If the value of the bit of this pixel matches the value of the bit of the previous pixel
if (currentBool == lastVal)
{
//Values are the same, so increase current run
tempDistance++;
}
else
{
//Values are not the same, so save the run
distances.Add(tempDistance);
//Set the bit value for the next comparison to the bit value of this pixel
lastVal = currentBool;
//Reset the run length for the new run
tempDistance = 0;
}
}
}
//Save the last run becouse this never happens in the loop
distances.Add(tempDistance);
//Save the bit value of the first pixel, because the decompressor needs to know this
bool initialVal = source.GetPixelBit(0, 0, bitLayer);
//Compress the array of run lengths using different techniques
BitStreamFIFO bitStream = VaryingIntArrayCompressor.Compress(distances.ToArray());
//Combine the inititial bit value with the compressed data of the runs, then return the BitStream
return(BitStreamFIFO.Merge(new BitStreamFIFO(new bool[] { initialVal }), bitStream));
}
//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);
}
//Compress aBitmap into byte array
public static BitStreamFIFO Compress(AccessibleBitmapBitwise source, int bitLayer)
{
//Initialize
List <int> ints = new List <int>(); //List of all integers generated from the bits of this channel
bool[] tmpBools = new bool[8]; //The collection of bits that will be converted to an interger
int index = 0; //The index in tmpBools where a new bit should be inserted
//Loop trough all lines of pixels
for (int y = 0; y < source.height; y++)
{
//Loop trough all pixels in this line
for (int x = 0; x < source.width; x++)
{
//Write bit of current pixel to the correct position in tmpBools
tmpBools[index] = source.GetPixelBit(x, y, bitLayer);
//Increase index for next bit
index++;
//If index is 8, tmpBools is full
if (index == 8)
{
//Set index to 0, so the next bit will be written to the start
index = 0;
//Convert tmpBools to an integer & add the result to the list of integers
ints.Add(new BitStreamFIFO().BoolArrayToInt(tmpBools));
}
}
}
//If index is not 0, it has not been reset at last, so tmpBools should be saved for the last bits it contains
if (index > 0)
{
//Convert tmpBools to an integer & add the result to the list of integers
ints.Add(new BitStreamFIFO().BoolArrayToInt(tmpBools));
}
//Compress the obtained array of integers using different techniques
BitStreamFIFO bitStream = VaryingIntArrayCompressor.Compress(ints.ToArray());
//Return the output array
return(bitStream);
}
//Decompress byte array into aBitmap with help of width, length and bitdepth
public static AccessibleBitmapBitwise Decompress(BitStreamFIFO inBits, AccessibleBitmapBitwise inBitmap, out BitStreamFIFO restBits, int bitLayer)
{
//Read necessary info from BitStream
bool currentVal = inBits.ReadBool(); //The bit value of the first run
//Decompress the BitStream to a queue of integers
Queue <int> runs = new Queue <int>(VaryingIntArrayCompressor.Decompress(ref inBits));
//Initialize
int pixelsToGo = runs.Dequeue() + 1; //The amount of pixels that should be written before the next run starts
//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.SetPixelBit(x, y, bitLayer, currentVal);
//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;
//Toggle bit value, because a bit can just have 2 values, and this run cannot have the same value as the previous run
currentVal = !currentVal;
}
}
}
//Set the output BitStream to the remaining bits of the input BitStream
restBits = inBits;
//Return the modified AccessibleBitmapBitwise so the rest of the channels can be added to complete it
return(inBitmap);
}
//Compress aBitmap into byte array
public static BitStreamFIFO Compress(AccessibleBitmapBitwise source, int bitLayer)
{
//Initialize vars
BitStreamFIFO bitStream = new BitStreamFIFO();
List <int> distances = new List <int>();
int tempDistance = -1;
bool lastVal = source.GetPixelBit(0, 0, bitLayer);
//Iterate trough pixels
for (int y = 0; y < source.height; y++)
{
for (int x = 0; x < source.width; x++)
{
//Take value of pixel & compare with previous value
bool currentBool = source.GetPixelBit(x, y, bitLayer);
if (currentBool == lastVal)
{
//Values are the same, so increase current run
tempDistance++;
}
else
{
//Values are not the same, so save the run and create a new one
distances.Add(tempDistance);
lastVal = currentBool;
tempDistance = 0;
}
}
}
//Save the last run becouse this never happens in the loop
distances.Add(tempDistance);
bool initialVal = source.GetPixelBit(0, 0, bitLayer);
bitStream.Write(initialVal);
BitStreamFIFO output = BitStreamFIFO.Merge(bitStream, VaryingIntArrayCompressor.Compress(distances.ToArray()));
return(output);
}
//Compress aBitmap into byte array
public static byte[] Compress(AccessibleBitmapBytewise source, int byteLayer)
{
//Create int array with a size equal to the amount of pixels in the image
int[] layerByteArray = new int[source.width * source.height];
//Loop trough all lines of pixels
for (int y = 0; y < source.height; y++)
{
//Loop trough all pixels in this line
for (int x = 0; x < source.width; x++)
{
//Write the byte of this channel from the current pixel to the correct position in the output array
layerByteArray[y * source.width + x] = source.GetPixelByte(x, y, byteLayer);
}
}
//Compress the obtained array of integers using different techniques
byte[] outputArray = VaryingIntArrayCompressor.Compress(layerByteArray).ToByteArray();
//Return the output array
return(outputArray);
}
//Compress aBitmap into byte array
public static byte[] Compress(AccessibleBitmap source)
{
return(VaryingIntArrayCompressor.Compress(Array.ConvertAll(source.GetRawPixelBytes(), Convert.ToInt32)).ToByteArray());
}