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/*
* Copyright 2017 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#import <Foundation/Foundation.h>
#if TARGET_OS_IPHONE
#import <UIKit/UIKit.h>
#else
#import <AppKit/AppKit.h>
#endif
#import "base/RTCVideoFrame.h"
NS_ASSUME_NONNULL_BEGIN
/**
* Protocol defining ability to render RTCVideoFrame in Metal enabled views.
*/
@protocol RTCMTLRenderer <NSObject>
/**
* Method to be implemented to perform actual rendering of the provided frame.
*
* @param frame The frame to be rendered.
*/
- (void)drawFrame:(RTC_OBJC_TYPE(RTCVideoFrame) *)frame;
/**
* Sets the provided view as rendering destination if possible.
*
* If not possible method returns NO and callers of the method are responisble for performing
* cleanups.
*/
#if TARGET_OS_IOS
- (BOOL)addRenderingDestination:(__kindof UIView *)view;
#else
- (BOOL)addRenderingDestination:(__kindof NSView *)view;
#endif
@end
/**
* Implementation of RTCMTLRenderer protocol.
*/
NS_AVAILABLE(10_11, 9_0)
@interface RTCMTLRenderer : NSObject <RTCMTLRenderer>
/** @abstract A wrapped RTCVideoRotation, or nil.
@discussion When not nil, the rotation of the actual frame is ignored when rendering.
*/
@property(atomic, nullable) NSValue *rotationOverride;
@end
NS_ASSUME_NONNULL_END
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