/// <summary>
/// Reads pixels data into single array of pixels with new stride equal to <paramref name="width"/>.
/// </summary>
/// <typeparam name="T">Type of the pixel.</typeparam>
/// <param name="width">Bitmap width.</param>
/// <param name="height">Bitmap height.</param>
/// <param name="data">Pointer to start of bitmap data.</param>
/// <param name="stride">Row stride in bytes.</param>
/// <param name="channels">Number of channels in the image.</param>
/// <returns>Array of image pixels.</returns>
private static T[] ReadPixels <T>(int width, int height, NakedPointer data, int stride, int channels)
{
int pixelByteSize = System.Runtime.InteropServices.Marshal.SizeOf <T>();
if (stride <= 0 || stride == pixelByteSize * channels * width)
{
return(new CodeArray <T>(data, width * height * channels).ToArray());
}
else
{
T[] result = new T[width * height * channels];
int rowElements = width * channels;
for (int y = 0, j = 0; y < height; y++)
{
CodeArray <T> array = new CodeArray <T>(data.AdjustPointer(stride * y), rowElements);
for (int x = 0; x < rowElements; x++, j++)
{
result[j] = array[x];
}
}
return(result);
}
}
/// <summary>
/// Creates <see cref="IBitmap"/> with pixel type read from data element type.
/// </summary>
/// <remarks>
/// If <paramref name="data"/> is <see cref="Variable"/> of <see cref="CodeType"/> <code>unsigned char*</code>,
/// then pixel type is read as <code>byte</code>.
/// </remarks>
/// <param name="width">Width of the image.</param>
/// <param name="height">Height of the image.</param>
/// <param name="data">Bitmap data.</param>
/// <param name="channels">Description of the image channels.</param>
/// <param name="stride">Bitmap stride.</param>
/// <returns>Instance of the <see cref="IBitmap"/> object.</returns>
public IBitmap CreateImage(dynamic width, dynamic height, dynamic data, ChannelType[] channels, dynamic stride = null)
{
int imageWidth = Convert.ToInt32(width);
int imageHeight = Convert.ToInt32(width);
int dataStride = stride == null ? -1 : Convert.ToInt32(stride);
Variable dataVariable = data as Variable;
BuiltinType dataType;
NakedPointer dataPointer;
if (dataVariable != null)
{
dataPointer = new NakedPointer(dataVariable.GetCodeType().Module.Process, dataVariable.GetPointerAddress());
try
{
dataType = dataVariable.GetCodeType().ElementType.BuiltinType;
}
catch
{
dataType = dataVariable.GetCodeType().BuiltinType;
}
}
else
{
// Consider data as memory pointer and data type as byte
dataPointer = new NakedPointer(Convert.ToUInt64(data));
dataType = BuiltinType.UInt8;
}
switch (dataType)
{
case BuiltinType.Float32:
return(Graphics.CreateBitmap(imageWidth, imageHeight, channels, ReadPixels <float>(imageWidth, imageHeight, dataPointer, dataStride, channels.Length)));
case BuiltinType.Float64:
return(Graphics.CreateBitmap(imageWidth, imageHeight, channels, ReadPixels <double>(imageWidth, imageHeight, dataPointer, dataStride, channels.Length)));
case BuiltinType.Int8:
return(Graphics.CreateBitmap(imageWidth, imageHeight, channels, ReadPixels <sbyte>(imageWidth, imageHeight, dataPointer, dataStride, channels.Length)));
case BuiltinType.Int16:
return(Graphics.CreateBitmap(imageWidth, imageHeight, channels, ReadPixels <short>(imageWidth, imageHeight, dataPointer, dataStride, channels.Length)));
case BuiltinType.Int32:
return(Graphics.CreateBitmap(imageWidth, imageHeight, channels, ReadPixels <int>(imageWidth, imageHeight, dataPointer, dataStride, channels.Length)));
case BuiltinType.NoType:
case BuiltinType.Char8:
case BuiltinType.Void:
case BuiltinType.UInt8:
return(Graphics.CreateBitmap(imageWidth, imageHeight, channels, ReadPixels <byte>(imageWidth, imageHeight, dataPointer, dataStride, channels.Length)));
case BuiltinType.UInt16:
return(Graphics.CreateBitmap(imageWidth, imageHeight, channels, ReadPixels <ushort>(imageWidth, imageHeight, dataPointer, dataStride, channels.Length)));
default:
throw new NotImplementedException($"Unknown image data type: {dataType}");
}
}
/// <summary>
/// Creates <see cref="IBitmap"/> with the specified pixel type.
/// </summary>
/// <typeparam name="PixelType">Type of the pixel.</typeparam>
/// <param name="width">Width of the image.</param>
/// <param name="height">Height of the image.</param>
/// <param name="data">Bitmap data.</param>
/// <param name="channels">Description of the image channels.</param>
/// <param name="stride">Bitmap stride.</param>
/// <returns>Instance of the <see cref="IBitmap"/> object.</returns>
public IBitmap CreateImage <PixelType>(dynamic width, dynamic height, dynamic data, ChannelType[] channels, dynamic stride = null)
{
int imageWidth = Convert.ToInt32(width);
int imageHeight = Convert.ToInt32(width);
int dataStride = stride == null ? -1 : Convert.ToInt32(stride);
Variable dataVariable = data as Variable;
NakedPointer dataPointer;
if (dataVariable != null)
{
dataPointer = new NakedPointer(dataVariable.GetCodeType().Module.Process, dataVariable.GetPointerAddress());
}
else
{
dataPointer = new NakedPointer(Convert.ToUInt64(data));
}
// pixels will be PixelType[], but if we use dynamic, compiler will do the magic to call the right function.
dynamic pixels = ReadPixels <PixelType>(imageWidth, imageHeight, dataPointer, dataStride, channels.Length);
return(Graphics.CreateBitmap(imageWidth, imageHeight, channels, pixels));
}
/// <summary>
/// Reads the memory from current process.
/// </summary>
/// <param name="pointer">The pointer.</param>
/// <param name="size">The size.</param>
/// <returns>Buffer containing read memory</returns>
public static MemoryBuffer ReadMemory(NakedPointer pointer, uint size)
{
return(ReadMemory(Process.Current, pointer, size));
}
/// <summary>
/// Reads the memory from the specified process.
/// </summary>
/// <param name="process">The process.</param>
/// <param name="pointer">The pointer.</param>
/// <param name="size">The size.</param>
/// <returns>Buffer containing read memory</returns>
public static MemoryBuffer ReadMemory(Process process, NakedPointer pointer, uint size)
{
return(ReadMemory(process, pointer.GetPointerAddress(), size));
}
