RTCVideoEncoderFactory.h

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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>

#import "RTCMacros.h"

#import "RTCVideoCodecInfo.h"

#import "RTCVideoEncoder.h"

NS_ASSUME_NONNULL_BEGIN

/** RTCVideoEncoderFactory is an Objective-C version of

 webrtc::VideoEncoderFactory::VideoEncoderSelector.

*/

RTC_OBJC_EXPORT

@protocol RTC_OBJC_TYPE

(RTCVideoEncoderSelector)<NSObject>

    - (void)registerCurrentEncoderInfo : (RTC_OBJC_TYPE(RTCVideoCodecInfo) *)info;

- (nullable RTC_OBJC_TYPE(RTCVideoCodecInfo) *)encoderForBitrate:(NSInteger)bitrate;

- (nullable RTC_OBJC_TYPE(RTCVideoCodecInfo) *)encoderForBrokenEncoder;

@optional

- (nullable RTC_OBJC_TYPE(RTCVideoCodecInfo) *)encoderForResolutionChangeBySize:(CGSize)size;

@end

/** RTCVideoEncoderCodecSupport is an Objective-C version of

 * webrtc::VideoEncoderFactory::CodecSupport. */

RTC_OBJC_EXPORT

@interface RTC_OBJC_TYPE (RTCVideoEncoderCodecSupport) : NSObject

- (instancetype)init NS_UNAVAILABLE;

- (instancetype)initWithSupported:(bool)isSupported;

- (instancetype)initWithSupported:(bool)isSupported

                 isPowerEfficient:(bool)isPowerEfficient NS_DESIGNATED_INITIALIZER;

@property(nonatomic, readonly) bool isSupported;

@property(nonatomic, readonly) bool isPowerEfficient;

@end

/** RTCVideoEncoderFactory is an Objective-C version of webrtc::VideoEncoderFactory.

*/

RTC_OBJC_EXPORT

@protocol RTC_OBJC_TYPE

(RTCVideoEncoderFactory)<NSObject>

    - (nullable id<RTC_OBJC_TYPE(RTCVideoEncoder)>)createEncoder

    : (RTC_OBJC_TYPE(RTCVideoCodecInfo) *)info;

- (NSArray<RTC_OBJC_TYPE(RTCVideoCodecInfo) *> *)

    supportedCodecs;  // TODO(andersc): "supportedFormats" instead?

@optional

- (NSArray<RTC_OBJC_TYPE(RTCVideoCodecInfo) *> *)implementations;

- (nullable id<RTC_OBJC_TYPE(RTCVideoEncoderSelector)>)encoderSelector;

/* TODO: b/299588022 - move to non-optional section when implemented by all derived classes. */

- (RTC_OBJC_TYPE(RTCVideoEncoderCodecSupport) *)

    queryCodecSupport:(RTC_OBJC_TYPE(RTCVideoCodecInfo) *)info

      scalabilityMode:(nullable NSString *)scalabilityMode;

@end

NS_ASSUME_NONNULL_END