shell/platform/darwin/graphics/FlutterDarwinExternalTextureMetal.h

// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#import <Foundation/Foundation.h>
#import <Metal/Metal.h>

#import "flutter/shell/platform/darwin/common/framework/Headers/FlutterTexture.h"
#include "third_party/skia/include/core/SkCanvas.h"
#include "third_party/skia/include/core/SkImage.h"

@interface FlutterDarwinExternalTextureSkImageWrapper : NSObject

+ (sk_sp<SkImage>)wrapYUVATexture:(nonnull id<MTLTexture>)yTex
                            UVTex:(nonnull id<MTLTexture>)uvTex
                        grContext:(nonnull GrDirectContext*)grContext
                            width:(size_t)width
                           height:(size_t)height;

+ (sk_sp<SkImage>)wrapRGBATexture:(nonnull id<MTLTexture>)rgbaTex
                        grContext:(nonnull GrDirectContext*)grContext
                            width:(size_t)width
                           height:(size_t)height;

@end

@interface FlutterDarwinExternalTextureMetal : NSObject

- (nullable instancetype)initWithTextureCache:(nonnull CVMetalTextureCacheRef)textureCache
                                    textureID:(int64_t)textureID
                                      texture:(nonnull NSObject<FlutterTexture>*)texture;

- (void)canvas:(SkCanvas&)canvas
        bounds:(const SkRect&)bounds
        freeze:(BOOL)freeze
     grContext:(nonnull GrDirectContext*)grContext
      sampling:(const SkSamplingOptions&)sampling
         paint:(nullable const SkPaint*)paint;

- (void)onGrContextCreated;

- (void)onGrContextDestroyed;

- (void)markNewFrameAvailable;

- (void)onTextureUnregistered;

@property(nonatomic, readonly) int64_t textureID;

@end