/// <summary>
/// Transform image into Bgra8 image
/// </summary>
/// <param name="softwareBitmap">Input image to transform.</param>
/// <param name="transformScanline">Method to map pixels in a scanline.</param>
static unsafe SoftwareBitmap TransformBitmap(SoftwareBitmap softwareBitmap, TransformScanline transformScanline)
{
// XAML Image control only supports premultiplied Bgra8 format.
var outputBitmap = new SoftwareBitmap(BitmapPixelFormat.Bgra8,
softwareBitmap.PixelWidth, softwareBitmap.PixelHeight, BitmapAlphaMode.Premultiplied);
using (var input = softwareBitmap.LockBuffer(BitmapBufferAccessMode.Read))
using (var output = outputBitmap.LockBuffer(BitmapBufferAccessMode.Write)) {
// Get stride values to calculate buffer position for a given pixel x and y position.
var inputStride = input.GetPlaneDescription(0).Stride;
var outputStride = output.GetPlaneDescription(0).Stride;
var pixelWidth = softwareBitmap.PixelWidth;
var pixelHeight = softwareBitmap.PixelHeight;
using (var outputReference = output.CreateReference())
using (var inputReference = input.CreateReference()) {
((IMemoryBufferByteAccess)inputReference).GetBuffer(out var inputBytes, out var inputCapacity);
((IMemoryBufferByteAccess)outputReference).GetBuffer(out var outputBytes, out var outputCapacity);
// Iterate over all pixels and store converted value.
for (var y = 0; y < pixelHeight; y++)
{
var inputRowBytes = inputBytes + y * inputStride;
var outputRowBytes = outputBytes + y * outputStride;
transformScanline(pixelWidth, inputRowBytes, outputRowBytes);
}
}
}
return(outputBitmap);
}
/// <summary>
/// Transform image into Bgra8 image using given transform method.
/// </summary>
/// <param name="softwareBitmap">Input image to transform.</param>
/// <param name="transformScanline">Method to map pixels in a scanline.</param>
private static unsafe void TransformBitmap(
SoftwareBitmap inputBitmap,
SoftwareBitmap outputBitmap,
TransformScanline transformScanline)
{
using (var input = inputBitmap.LockBuffer(BitmapBufferAccessMode.Read))
using (var output = outputBitmap.LockBuffer(BitmapBufferAccessMode.Write))
{
// Get stride values to calculate buffer position for a given pixel x and y position.
int inputStride = input.GetPlaneDescription(0).Stride;
int outputStride = output.GetPlaneDescription(0).Stride;
int pixelWidth = inputBitmap.PixelWidth;
int pixelHeight = inputBitmap.PixelHeight;
using (var outputReference = output.CreateReference())
using (var inputReference = input.CreateReference())
{
// Get input and output byte access buffers.
byte *inputBytes;
uint inputCapacity;
((IMemoryBufferByteAccess)inputReference).GetBuffer(out inputBytes, out inputCapacity);
byte *outputBytes;
uint outputCapacity;
((IMemoryBufferByteAccess)outputReference).GetBuffer(out outputBytes, out outputCapacity);
// Iterate over all pixels and store converted value.
for (int y = 0; y < pixelHeight; y++)
{
byte *inputRowBytes = inputBytes + y * inputStride;
byte *outputRowBytes = outputBytes + y * outputStride;
transformScanline(pixelWidth, inputRowBytes, outputRowBytes);
}
}
}
}
/// <summary>
/// Transform image into Bgra8 image using given transform method.
/// </summary>
/// <param name="softwareBitmap">Input image to transform.</param>
/// <param name="transformScanline">Method to map pixels in a scanline.</param>
private static unsafe SoftwareBitmap TransformBitmap(SoftwareBitmap softwareBitmap, TransformScanline transformScanline)
{
// XAML Image control only supports premultiplied Bgra8 format.
var outputBitmap = new SoftwareBitmap(BitmapPixelFormat.Bgra8,
softwareBitmap.PixelWidth, softwareBitmap.PixelHeight, BitmapAlphaMode.Premultiplied);
using (var input = softwareBitmap.LockBuffer(BitmapBufferAccessMode.Read))
using (var output = outputBitmap.LockBuffer(BitmapBufferAccessMode.Write))
{
// Get stride values to calculate buffer position for a given pixel x and y position.
int inputStride = input.GetPlaneDescription(0).Stride;
int outputStride = output.GetPlaneDescription(0).Stride;
int pixelWidth = softwareBitmap.PixelWidth;
int pixelHeight = softwareBitmap.PixelHeight;
using (var outputReference = output.CreateReference())
using (var inputReference = input.CreateReference())
{
// Get input and output byte access buffers.
byte* inputBytes;
uint inputCapacity;
((IMemoryBufferByteAccess)inputReference).GetBuffer(out inputBytes, out inputCapacity);
byte* outputBytes;
uint outputCapacity;
((IMemoryBufferByteAccess)outputReference).GetBuffer(out outputBytes, out outputCapacity);
// Iterate over all pixels and store converted value.
for (int y = 0; y < pixelHeight; y++)
{
byte* inputRowBytes = inputBytes + y * inputStride;
byte* outputRowBytes = outputBytes + y * outputStride;
transformScanline(pixelWidth, inputRowBytes, outputRowBytes);
}
}
}
return outputBitmap;
}
/// <summary>
/// Transform image into Bgra8 image using given transform method.
/// </summary>
/// <param name="softwareBitmap">Input image to transform.</param>
/// <param name="transformScanline">Method to map pixels in a scanline.</param>
private static unsafe SoftwareBitmap TransformBitmap(SoftwareBitmap softwareBitmap, TransformScanline transformScanline)
{
var outputBitmap = new SoftwareBitmap(BitmapPixelFormat.Bgra8,
softwareBitmap.PixelWidth, softwareBitmap.PixelHeight, BitmapAlphaMode.Premultiplied);
using (var input = softwareBitmap.LockBuffer(BitmapBufferAccessMode.Read))
using (var output = outputBitmap.LockBuffer(BitmapBufferAccessMode.Write))
{
int inputStride = input.GetPlaneDescription(0).Stride;
int outputStride = output.GetPlaneDescription(0).Stride;
int pixelWidth = softwareBitmap.PixelWidth;
int pixelHeight = softwareBitmap.PixelHeight;
using (var outputReference = output.CreateReference())
using (var inputReference = input.CreateReference())
{
byte *inputBytes;
uint inputCapacity;
((IMemoryBufferByteAccess)inputReference).GetBuffer(out inputBytes, out inputCapacity);
byte *outputBytes;
uint outputCapacity;
((IMemoryBufferByteAccess)outputReference).GetBuffer(out outputBytes, out outputCapacity);
for (int y = 0; y < pixelHeight; y++)
{
byte *inputRowBytes = inputBytes + y * inputStride;
byte *outputRowBytes = outputBytes + y * outputStride;
transformScanline(pixelWidth, inputRowBytes, outputRowBytes);
}
}
}
return(outputBitmap);
}
