RTCCVPixelBuffer.h

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/*

 *  Copyright 2018 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 <AVFoundation/AVFoundation.h>

#import "RTCVideoFrameBuffer.h"

#import "sdk/objc/base/RTCMacros.h"

NS_ASSUME_NONNULL_BEGIN

/** RTCVideoFrameBuffer containing a CVPixelBufferRef */

RTC_OBJC_EXPORT

@interface RTC_OBJC_TYPE (RTCCVPixelBuffer) : NSObject <RTC_OBJC_TYPE(RTCVideoFrameBuffer)>

@property(nonatomic, readonly) CVPixelBufferRef pixelBuffer;

@property(nonatomic, readonly) int cropX;

@property(nonatomic, readonly) int cropY;

@property(nonatomic, readonly) int cropWidth;

@property(nonatomic, readonly) int cropHeight;

+ (NSSet<NSNumber *> *)supportedPixelFormats;

- (instancetype)initWithPixelBuffer:(CVPixelBufferRef)pixelBuffer;

- (instancetype)initWithPixelBuffer:(CVPixelBufferRef)pixelBuffer

                       adaptedWidth:(int)adaptedWidth

                      adaptedHeight:(int)adaptedHeight

                          cropWidth:(int)cropWidth

                         cropHeight:(int)cropHeight

                              cropX:(int)cropX

                              cropY:(int)cropY;

- (BOOL)requiresCropping;

- (BOOL)requiresScalingToWidth:(int)width height:(int)height;

- (int)bufferSizeForCroppingAndScalingToWidth:(int)width height:(int)height;

/** The minimum size of the `tmpBuffer` must be the number of bytes returned from the

 * bufferSizeForCroppingAndScalingToWidth:height: method.

 * If that size is 0, the `tmpBuffer` may be nil.

*/

- (BOOL)cropAndScaleTo:(CVPixelBufferRef)outputPixelBuffer

        withTempBuffer:(nullable uint8_t *)tmpBuffer;

@end

NS_ASSUME_NONNULL_END