import "flutter/shell/platform/darwin/graphics/FlutterDarwinExternalTextureMetal.h"
#include "flutter/display_list/geometry/dl_geometry_conversions.h"
#include "flutter/display_list/image/dl_image.h"
#include "flutter/fml/platform/darwin/cf_utils.h"
#include "impeller/base/validation.h"
#include "impeller/display_list/aiks_context.h"
#include "impeller/display_list/dl_image_impeller.h"
#include "impeller/renderer/backend/metal/texture_mtl.h"
#include "third_party/skia/include/core/SkColorSpace.h"
#include "third_party/skia/include/core/SkImage.h"
#include "third_party/skia/include/core/SkYUVAInfo.h"
#include "third_party/skia/include/gpu/GpuTypes.h"
#include "third_party/skia/include/gpu/ganesh/GrBackendSurface.h"
#include "third_party/skia/include/gpu/ganesh/GrDirectContext.h"
#include "third_party/skia/include/gpu/ganesh/GrYUVABackendTextures.h"
#include "third_party/skia/include/gpu/ganesh/SkImageGanesh.h"
#include "third_party/skia/include/gpu/ganesh/mtl/GrMtlBackendSurface.h"
#include "third_party/skia/include/gpu/ganesh/mtl/GrMtlTypes.h"
#include "third_party/skia/include/ports/SkCFObject.h"

Variables
NSObject< FlutterTexture > *	_externalTexture

BOOL	_textureFrameAvailable

sk_sp< flutter::DlImage >	_externalImage

CVPixelBufferRef	_lastPixelBuffer

OSType	_pixelFormat

BOOL	_enableImpeller