talk/app/webrtc/objc/public/RTCVideoRenderer.h

/*
 * libjingle
 * Copyright 2013, Google Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  1. Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright notice,
 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#import <Foundation/Foundation.h>
#if TARGET_OS_IPHONE
#import <UIKit/UIKit.h>
#endif

@class RTCI420Frame;
@class RTCVideoRenderer;

// RTCVideoRendererDelegate is a protocol for an object that must be
// implemented to get messages when rendering.
@protocol RTCVideoRendererDelegate<NSObject>

// The size of the frame.
- (void)renderer:(RTCVideoRenderer*)renderer didSetSize:(CGSize)size;

// The frame to be displayed.
- (void)renderer:(RTCVideoRenderer*)renderer
    didReceiveFrame:(RTCI420Frame*)frame;

@end

// Interface for rendering VideoFrames from a VideoTrack
@interface RTCVideoRenderer : NSObject

@property(nonatomic, weak) id<RTCVideoRendererDelegate> delegate;

// Initialize the renderer.  Requires a delegate which does the actual drawing
// of frames.
- (instancetype)initWithDelegate:(id<RTCVideoRendererDelegate>)delegate;

#if TARGET_OS_IPHONE
// DEPRECATED. See https://code.google.com/p/webrtc/issues/detail?id=3341 for
// details.
- (instancetype)initWithView:(UIView*)view;
#endif

#ifndef DOXYGEN_SHOULD_SKIP_THIS
// Disallow init and don't add to documentation
- (id)init __attribute__((
    unavailable("init is not a supported initializer for this class.")));
#endif /* DOXYGEN_SHOULD_SKIP_THIS */

@end