public unsafe void DecompressIntPtrToIntPtr(
[Values(
PixelFormat.Format32bppArgb,
PixelFormat.Format24bppRgb,
PixelFormat.Format8bppIndexed)] PixelFormat format)
{
foreach (var data in TestUtils.GetTestImagesData("*.jpg"))
{
var dataPtr = TJUtils.CopyDataToPointer(data.Item2);
Assert.DoesNotThrow(() =>
{
_decompressor.GetImageInfo(dataPtr, (ulong)data.Item2.Length, TestUtils.ConvertPixelFormat(format), out var width, out var height, out var stride, out var decompressedBufferSize);
var decompressed = new byte[decompressedBufferSize];
fixed(byte *ptr = decompressed)
{
_decompressor.Decompress(
dataPtr,
(ulong)data.Item2.Length,
(IntPtr)ptr,
decompressedBufferSize,
TestUtils.ConvertPixelFormat(format),
TJFlags.NONE);
}
Assert.IsTrue(decompressed.Any(b => b != 0));
});
TJUtils.FreePtr(dataPtr);
}
}
/// <summary>
/// Creates a writeable bitmap large enough to store the provided JPEG image. This bitmap can be reused
/// for new JPEGs of the same size.
/// </summary>
/// <returns>A writeable bitmap with the correct dimensions for containing preview images.</returns>
public WriteableBitmap CreateWriteableBitmapForPreview()
{
using (CameraFile preview = ActiveCamera.Preview())
{
JpegDecoder.GetImageInfo(preview.Data, preview.Size, TJPixelFormat.BGRA, out int width, out int height, out int stride, out int bufferSize);
WriteableBitmap bitmap = new WriteableBitmap(new PixelSize(width, height), new Vector(96, 96), PixelFormat.Bgra8888);
return(bitmap);
}
}