public static void Check()
{
try
{
ImageData original;
ArgbColor[] originalPixels;
if (_testResults == null || _testResults.Count != _iterations)
{
throw new Exception("No output.");
}
original = new ImageData(SampleFileName);
originalPixels = original.PixelData;
foreach (string fileName in _testResults)
{
ImageData copy;
ArgbColor[] copyPixels;
copy = new ImageData(fileName);
copyPixels = copy.PixelData;
if (copy.Width != original.Width || copy.Height != original.Height ||
copyPixels.Length != originalPixels.Length)
{
throw new Exception("Invalid data.");
}
for (int j = 0; j < copyPixels.Length; j++)
{
ArgbColor expected;
ArgbColor actual;
expected = originalPixels[j];
actual = copyPixels[j];
if (expected.A != actual.A || expected.R != actual.R || expected.G != actual.G || expected.B != actual.B)
{
throw new Exception(
$"Data at position {j} mismatch.\n\nExpected: R:{expected.R} G:{expected.G} B:{expected.B} A:{expected.A}\nActual: R:{actual.R} G:{actual.G} B:{actual.B} A:{actual.A}");
}
}
}
}
finally
{
if (_testResults != null)
{
foreach (string fileName in _testResults)
{
File.Delete(fileName);
}
}
}
}
public static void Test1_write_a_byte_at_a_time_original()
{
ImageData source;
List<string> results;
int count;
source = new ImageData(SampleFileName);
results = new List<string>();
count = _iterations;
for (int i = 0; i < count; i++)
{
string fileName;
fileName = Path.GetTempFileName();
using (Stream stream = File.Create(fileName))
{
ArgbColor[] pixels;
stream.WriteByte((byte)'f');
stream.WriteByte((byte)'a');
stream.WriteByte((byte)'r');
stream.WriteByte((byte)'b');
stream.WriteByte((byte)'f');
stream.WriteByte((byte)'e');
stream.WriteByte((byte)'l');
stream.WriteByte((byte)'d');
stream.WriteBigEndian(source.Width);
stream.WriteBigEndian(source.Height);
pixels = source.PixelData;
foreach (ArgbColor pixel in pixels)
{
ushort r;
ushort g;
ushort b;
ushort a;
r = (ushort)(pixel.R * 256);
g = (ushort)(pixel.G * 256);
b = (ushort)(pixel.B * 256);
a = (ushort)(pixel.A * 256);
stream.WriteBigEndian(r);
stream.WriteBigEndian(g);
stream.WriteBigEndian(b);
stream.WriteBigEndian(a);
}
results.Add(fileName);
}
}
_testResults = results;
}
public static void Test4_write_pixel_data_by_row()
{
const int recordLength = 4 * 2; // four values per pixel, two bytes per value
ImageData source;
List<string> results;
int count;
source = new ImageData(SampleFileName);
results = new List<string>();
count = _iterations;
for (int i = 0; i < count; i++)
{
string fileName;
fileName = Path.GetTempFileName();
using (Stream stream = File.Create(fileName))
{
ArgbColor[] pixels;
byte[] header;
byte[] data;
int width;
int height;
int rowLength;
width = source.Width;
rowLength = width * recordLength;
height = source.Height;
header = new byte[8];
data = new byte[rowLength];
header[0] = (byte)'f';
header[1] = (byte)'a';
header[2] = (byte)'r';
header[3] = (byte)'b';
header[4] = (byte)'f';
header[5] = (byte)'e';
header[6] = (byte)'l';
header[7] = (byte)'d';
pixels = source.PixelData;
stream.Write(header, 0, 8);
stream.WriteBigEndian(width);
stream.WriteBigEndian(height);
for (int row = 0; row < height; row++)
{
for (int col = 0; col < width; col++)
{
int index;
ushort r;
ushort g;
ushort b;
ushort a;
ArgbColor pixel;
index = col * recordLength;
pixel = pixels[row * width + col];
r = (ushort)(pixel.R * 256);
g = (ushort)(pixel.G * 256);
b = (ushort)(pixel.B * 256);
a = (ushort)(pixel.A * 256);
data[index] = (byte)(r >> 8);
data[index + 1] = (byte)r;
data[index + 2] = (byte)(g >> 8);
data[index + 3] = (byte)g;
data[index + 4] = (byte)(b >> 8);
data[index + 5] = (byte)b;
data[index + 6] = (byte)(a >> 8);
data[index + 7] = (byte)a;
}
stream.Write(data, 0, rowLength);
}
results.Add(fileName);
}
}
_testResults = results;
}
public static void Test3_write_one_pixel_at_a_time()
{
const int recordLength = 4 * 2; // four values per pixel, two bytes per value
ImageData source;
List<string> results;
int count;
source = new ImageData(SampleFileName);
results = new List<string>();
count = _iterations;
for (int i = 0; i < count; i++)
{
string fileName;
fileName = Path.GetTempFileName();
using (Stream stream = File.Create(fileName))
{
ArgbColor[] pixels;
byte[] header;
byte[] data;
int width;
int height;
width = source.Width;
height = source.Height;
header = new byte[8];
data = new byte[recordLength];
header[0] = (byte)'f';
header[1] = (byte)'a';
header[2] = (byte)'r';
header[3] = (byte)'b';
header[4] = (byte)'f';
header[5] = (byte)'e';
header[6] = (byte)'l';
header[7] = (byte)'d';
pixels = source.PixelData;
stream.Write(header, 0, 8);
stream.WriteBigEndian(width);
stream.WriteBigEndian(height);
for (int j = 0; j < width * height; j++)
{
ushort r;
ushort g;
ushort b;
ushort a;
ArgbColor pixel;
pixel = pixels[j];
r = (ushort)(pixel.R * 256);
g = (ushort)(pixel.G * 256);
b = (ushort)(pixel.B * 256);
a = (ushort)(pixel.A * 256);
data[0] = (byte)(r >> 8);
data[1] = (byte)r;
data[2] = (byte)(g >> 8);
data[3] = (byte)g;
data[4] = (byte)(b >> 8);
data[5] = (byte)b;
data[6] = (byte)(a >> 8);
data[7] = (byte)a;
stream.Write(data, 0, recordLength);
}
results.Add(fileName);
}
}
_testResults = results;
}
