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Version: 21 Aug 2024

NativeWindowNativeBindings.cs

Source code

namespace MagicLeap.Android.NDK.NativeWindow
{
using System;
using System.Runtime.InteropServices;

internal static class NativeWindowNativeBindings
{
public const string kLibraryName = "libnativewindow";

[DllImport(kLibraryName, CallingConvention = CallingConvention.Cdecl)]
public static extern void AHardwareBuffer_acquire(AHardwareBuffer buffer);

[DllImport(kLibraryName, CallingConvention = CallingConvention.Cdecl)]
public static extern int AHardwareBuffer_allocate(ref AHardwareBuffer.Description description,
out AHardwareBuffer buffer);

[DllImport(kLibraryName, CallingConvention = CallingConvention.Cdecl)]
public static extern void AHardwareBuffer_describe(AHardwareBuffer buffer,
out AHardwareBuffer.Description description);

#if ANDROID_API_LEVEL_31_OR_NEWER
[DllImport(kLibraryName, CallingConvention = CallingConvention.Cdecl)]
public static extern int AHardwareBuffer_getId(AHardwareBuffer buffer, out ulong outId);
#endif

[DllImport(kLibraryName, CallingConvention = CallingConvention.Cdecl)]
public static extern int AHardwareBuffer_isSupported(ref AHardwareBuffer.Description description);

[DllImport(kLibraryName, CallingConvention = CallingConvention.Cdecl)]
public static extern unsafe int AHardwareBuffer_lock(AHardwareBuffer buffer, AHardwareBuffer.Usage usage,
int fence, ARect* rect, out void* virtualAddress);

[DllImport(kLibraryName, CallingConvention = CallingConvention.Cdecl)]
public static extern unsafe int AHardwareBuffer_lockAndGetInfo(AHardwareBuffer buffer,
AHardwareBuffer.Usage usage, int fence, ARect* rect, out void* outVirtualAddress, out int outBytesPerPixel,
out int outBytesPerStride);

[DllImport(kLibraryName, CallingConvention = CallingConvention.Cdecl)]
public static extern unsafe int AHardwareBuffer_lockPlanes(AHardwareBuffer buffer, AHardwareBuffer.Usage usage,
int fenceFd, ARect* rect, out AHardwareBuffer.Planes outPlanes);

[DllImport(kLibraryName, CallingConvention = CallingConvention.Cdecl)]
public static extern int AHardwareBuffer_recvHandleFromUnixSocket(int socketFd, out AHardwareBuffer buffer);

[DllImport(kLibraryName, CallingConvention = CallingConvention.Cdecl)]
public static extern void AHardwareBuffer_release(AHardwareBuffer buffer);

[DllImport(kLibraryName, CallingConvention = CallingConvention.Cdecl)]
public static extern int AHardwareBuffer_sendHandleToUnixSocket(AHardwareBuffer buffer, int socketFd);

[DllImport(kLibraryName, CallingConvention = CallingConvention.Cdecl)]
public static extern unsafe int AHardwareBuffer_unlock(AHardwareBuffer buffer, int* fence);
}
}