public void Decode2D(IntPtr input, int width, int height, int inputWidthStride, int inputOffset, IntPtr output,
int outputWidthStride = -1, int outputOffset = -1)
{
if (outputWidthStride == -1)
{
outputWidthStride = inputWidthStride;
}
if (outputOffset == -1)
{
outputOffset = inputOffset;
}
// Decode rows
for (int row = 0; row < height; row++)
{
Decode1D(input, width, 1, inputOffset + row * inputWidthStride,
output, 1, outputOffset + row * outputWidthStride);
}
IntPtr buffer = Marshal.AllocHGlobal(width * height * ElementSize);
MemoryAllocator.Copy2D(output, width, height, outputWidthStride, outputOffset, buffer, width, 0, ElementSize);
// Decode columns
for (int column = 0; column < width; column++)
{
Decode1D(buffer, height, width, column,
output, outputWidthStride, outputOffset + column);
}
Marshal.FreeHGlobal(buffer);
}
private void Decode2D(IntPtr input, int width, int height, int inputWidthStride, int inputOffset, IntPtr output, int outputWidthStride,
int outputOffset, int level)
{
if (level < MaximumLevelNumber && width > MinimumBandSize && height > MinimumBandSize)
{
Decode2D(input, (width + 1) / 2, (height + 1) / 2, inputWidthStride, inputOffset, output, outputWidthStride, outputOffset, level + 1);
_waveletTransformation.Decode2D(input, width, height, inputWidthStride, inputOffset, output, outputWidthStride, outputOffset);
MemoryAllocator.Copy2D(output, width, height, outputWidthStride, outputOffset,
input, inputWidthStride, inputOffset, ElementSize);
}
}
public void Encode2D(IntPtr input, int width, int height, int inputWidthStride, int inputOffset, IntPtr output,
int outputWidthStride = -1, int outputOffset = -1)
{
if (outputWidthStride == -1)
{
outputWidthStride = inputWidthStride;
}
if (outputOffset == -1)
{
outputOffset = inputOffset;
}
IntPtr buffer = Marshal.AllocHGlobal(width * height * ElementSize);
MemoryAllocator.Copy2D(input, width, height, inputWidthStride, inputOffset,
buffer, width, 0, ElementSize);
Encode2D(buffer, width, height, width, 0, output, outputWidthStride, outputOffset, 0);
Marshal.FreeHGlobal(buffer);
}
private void Encode2D(IntPtr input, int width, int height, int inputWidthStride, int inputOffset, IntPtr output, int outputWidthStride,
int outputOffset, int level)
{
if (level < MaximumLevelNumber && width > MinimumBandSize && height > MinimumBandSize)
{
_waveletTransformation.Encode2D(input, width, height, inputWidthStride, inputOffset, output, outputWidthStride,
outputOffset);
width++;
height++;
width /= 2;
height /= 2;
level++;
if (level < MaximumLevelNumber && width > MinimumBandSize && height > MinimumBandSize)
{
MemoryAllocator.Copy2D(output, width, height, outputWidthStride, outputOffset,
input, inputWidthStride, 0, ElementSize);
Encode2D(input, width, height, inputWidthStride, inputOffset, output, outputWidthStride, outputOffset, level);
}
}
}
