public void RoundTripDataSimpleBits()
{
var srcData = new byte[] { 1, 2, 3, 4 };
var data = new BitArray(srcData);
var bmp = _FilledSquare(Color.White, 4, 4);
var pixels = _imageMaker.PixelsFromImage(bmp);
var blended = _imageMaker.InjectData(pixels, data, bmp.Width, bmp.Height);
var resultData = _dataMaker.ExtractData(blended, bmp.Width, bmp.Height);
Assert.AreEqual(srcData.Length, resultData.Length);
for (int i = 0; i < srcData.Length; i++)
{
Assert.AreEqual(srcData[i], resultData[i]);
}
}
public void RoundTripDataReadsHeader()
{
var testData = new byte[] { 1, 2, 3, 4 };
var dataToInject = new BitArray(testData);
var bmp = _FilledSquare(Color.White, 10, 10);
var whitePixels = _imageMaker.PixelsFromImage(bmp);
var imageMaker = new ImageMaker();
imageMaker.Header.BitsPerPixel = 2;
var dataMaker = new DataMaker();
dataMaker.Header.BitsPerPixel = -1;
var injectedPixels = imageMaker.InjectData(whitePixels, dataToInject, 10, 10);
byte[] extractedData = dataMaker.ExtractData(injectedPixels, 10, 10);
Assert.AreEqual(testData, extractedData);
}
public void RoundTripDataWritablePixels()
{
var testData = new byte[] { 213, 214, 215, 216 };
var dataToInject = new BitArray(testData);
var bmp = _FilledSquare(Color.White, 10, 10);
var whitePixels = _imageMaker.PixelsFromImage(bmp);
var imageMaker = new ImageMaker();
imageMaker.Header.BitsPerPixel = 8;
imageMaker.Header.SetWritableRange(4, 4, 8, 8);
var dataMaker = new DataMaker();
var injectedPixels = imageMaker.InjectData(whitePixels, dataToInject, 10, 10);
Dump(injectedPixels, "Injected pixels");
byte[] extractedData = dataMaker.ExtractData(injectedPixels, 10, 10);
Assert.AreEqual(testData, extractedData);
}