public ImageFrame(ImageFormat.Format format, int width, int height, int widthStep, NativeArray <byte> pixelData)
{
unsafe {
UnsafeNativeMethods.mp_ImageFrame__ui_i_i_i_Pui8_PF(
format, width, height, widthStep,
(IntPtr)NativeArrayUnsafeUtility.GetUnsafeReadOnlyPtr(pixelData),
ReleasePixelData,
out var ptr
).Assert();
this.ptr = ptr;
}
}
public static Color32[] FromBytePtr(IntPtr ptr, ImageFormat.Format format, int width, int height, int widthStep, bool isFlipped = false)
{
switch (format)
{
case ImageFormat.Format.SRGB:
case ImageFormat.Format.SRGBA: {
return(FromSRGBOrSRGBA(ptr, format, width, height, widthStep, isFlipped));
}
default: {
throw new NotSupportedException();
}
}
}
public ImageFrame(ImageFormat.Format format, int width, int height, int widthStep, NativeArray <byte> pixelData)
{
Deleter deleter = (IntPtr ptr) => { /** Do nothing (pixelData will be moved) */ };
deleterHandle = GCHandle.Alloc(deleter, GCHandleType.Pinned);
unsafe {
UnsafeNativeMethods.mp_ImageFrame__ui_i_i_i_Pui8_PF(
format, width, height, widthStep,
(IntPtr)NativeArrayUnsafeUtility.GetUnsafeReadOnlyPtr(pixelData),
deleter,
out var ptr
).Assert();
this.ptr = ptr;
}
}
/// <summary>
/// Copy byte array that <paramref name="ptr" /> points to a Color32 array.
/// </summary>
/// <remarks>
/// In the source array, pixels are laid out left to right, top to bottom,
/// but in the returned array, left to right, top to bottom.
/// </remarks>
private static Color32[] FromSRGBOrSRGBA(IntPtr ptr, ImageFormat.Format format, int width, int height, int widthStep, bool isFlipped)
{
var colors = new Color32[width * height];
var padding = format == ImageFormat.Format.SRGB ? (widthStep - 3 * width) : (widthStep - 4 * width);
unsafe
{
fixed(Color32 *dest = colors)
{
byte *pSrc = (byte *)ptr.ToPointer();
if (isFlipped)
{
Color32 *pDest = dest + colors.Length - 1;
for (var i = 0; i < colors.Length; i++)
{
byte r = *pSrc++;
byte g = *pSrc++;
byte b = *pSrc++;
byte a = format == ImageFormat.Format.SRGB ? (byte)255 : (*pSrc++);
* pDest-- = new Color32(r, g, b, a);
}
}
else
{
for (var i = 0; i < height; i++)
{
Color32 *pRowDest = dest + width * (height - 1 - i);
for (var j = 0; j < width; j++)
{
byte r = *pSrc++;
byte g = *pSrc++;
byte b = *pSrc++;
byte a = format == ImageFormat.Format.SRGB ? (byte)255 : (*pSrc++);
* pRowDest++ = new Color32(r, g, b, a);
}
pSrc += padding;
}
}
}
}
return(colors);
}
public static extern MpReturnCode mp_ImageFrame__ui_i_i_ui(
ImageFormat.Format format, int width, int height, UInt32 alignmentBoundary, out IntPtr imageFrame);
public static extern MpReturnCode mp_ImageFrame__ui_i_i_i_Pui8_PF(
ImageFormat.Format format, int width, int height, int widthStep, IntPtr pixelData,
[MarshalAs(UnmanagedType.FunctionPtr)] ImageFrame.Deleter deleter, out IntPtr imageFrame);
public ImageFrame(ImageFormat.Format format, int width, int height, uint alignmentBoundary) : base()
{
UnsafeNativeMethods.mp_ImageFrame__ui_i_i_ui(format, width, height, alignmentBoundary, out var ptr).Assert();
this.ptr = ptr;
}
public ImageFrame(ImageFormat.Format format, int width, int height) : this(format, width, height, kDefaultAlignmentBoundary)
{
}
public static extern ImageFormat.Format mp__GpuBufferFormatForImageFormat__ui(ImageFormat.Format format);
