/// <returns>
/// The number of channels for a <paramref name="format" />.
/// If channels don't make sense in the <paramref name="format" />, returns <c>0</c>.
/// </returns>
/// <remarks>
/// Unlike the original implementation, this API won't signal SIGABRT.
/// </remarks>
public static int NumberOfChannelsForFormat(ImageFormat.Types.Format format)
{
switch (format)
{
case ImageFormat.Types.Format.Srgb:
case ImageFormat.Types.Format.Srgb48:
return(3);
case ImageFormat.Types.Format.Srgba:
case ImageFormat.Types.Format.Srgba64:
case ImageFormat.Types.Format.Sbgra:
return(4);
case ImageFormat.Types.Format.Gray8:
case ImageFormat.Types.Format.Gray16:
return(1);
case ImageFormat.Types.Format.Vec32F1:
return(1);
case ImageFormat.Types.Format.Vec32F2:
return(2);
case ImageFormat.Types.Format.Lab8:
return(3);
case ImageFormat.Types.Format.Ycbcr420P:
case ImageFormat.Types.Format.Ycbcr420P10:
case ImageFormat.Types.Format.Unknown:
default:
return(0);
}
}
/// <returns>
/// The channel size for a <paramref name="format" />.
/// If channels don't make sense in the <paramref name="format" />, returns <c>0</c>.
/// </returns>
/// <remarks>
/// Unlike the original implementation, this API won't signal SIGABRT.
/// </remarks>
public static int ChannelSizeForFormat(ImageFormat.Types.Format format)
{
switch (format)
{
case ImageFormat.Types.Format.Srgb:
case ImageFormat.Types.Format.Srgba:
case ImageFormat.Types.Format.Sbgra:
return(sizeof(byte));
case ImageFormat.Types.Format.Srgb48:
case ImageFormat.Types.Format.Srgba64:
return(sizeof(ushort));
case ImageFormat.Types.Format.Gray8:
return(sizeof(byte));
case ImageFormat.Types.Format.Gray16:
return(sizeof(ushort));
case ImageFormat.Types.Format.Vec32F1:
case ImageFormat.Types.Format.Vec32F2:
// sizeof float may be wrong since it's platform-dependent, but we assume that it's constant across all supported platforms.
return(sizeof(float));
case ImageFormat.Types.Format.Lab8:
return(sizeof(byte));
case ImageFormat.Types.Format.Ycbcr420P:
case ImageFormat.Types.Format.Ycbcr420P10:
case ImageFormat.Types.Format.Unknown:
default:
return(0);
}
}
public ImageFrame(ImageFormat.Types.Format format, int width, int height, int widthStep, IntPtr pixelData, Deleter deleter) : base()
{
unsafe
{
UnsafeNativeMethods.mp_ImageFrame__ui_i_i_i_Pui8_PF(format, width, height, widthStep, pixelData, deleter, out var ptr).Assert();
this.ptr = ptr;
}
}
public static extern MpReturnCode mp_ImageFrame__ui_i_i_i_Pui8_PF(
ImageFormat.Types.Format format, int width, int height, int widthStep, IntPtr pixelData,
[MarshalAs(UnmanagedType.FunctionPtr)] ImageFrame.Deleter deleter, out IntPtr imageFrame);
public static extern MpReturnCode mp_ImageFrame__ui_i_i_ui(
ImageFormat.Types.Format format, int width, int height, uint alignmentBoundary, out IntPtr imageFrame);
/// <summary>
/// Initialize an <see cref="ImageFrame" />.
/// </summary>
/// <remarks>
/// <paramref name="pixelData" /> won't be released if the instance is disposed of.<br />
/// It's useful when:
/// <list type="bullet">
/// <item>
/// <description>You can reuse the memory allocated to <paramref name="pixelData" />.</description>
/// </item>
/// <item>
/// <description>You've not allocated the memory (e.g. <see cref="Texture2D.GetRawTextureData" />).</description>
/// </item>
/// </list>
/// </remarks>
public ImageFrame(ImageFormat.Types.Format format, int width, int height, int widthStep, NativeArray <byte> pixelData)
: this(format, width, height, widthStep, pixelData, VoidDeleter)
{
}
public unsafe ImageFrame(ImageFormat.Types.Format format, int width, int height, int widthStep, NativeArray <byte> pixelData, Deleter deleter)
: this(format, width, height, widthStep, (IntPtr)NativeArrayUnsafeUtility.GetUnsafeReadOnlyPtr(pixelData), deleter)
{
}
public ImageFrame(ImageFormat.Types.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.Types.Format format, int width, int height) : this(format, width, height, DefaultAlignmentBoundary)
{
}
public static extern ImageFormat.Types.Format mp__GpuBufferFormatForImageFormat__ui(ImageFormat.Types.Format format);