62 lines
2.0 KiB
C
62 lines
2.0 KiB
C
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/*
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* Copyright 2015 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#import <Foundation/Foundation.h>
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#if TARGET_OS_IPHONE
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#import <GLKit/GLKit.h>
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#else
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#import <AppKit/NSOpenGL.h>
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#endif
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#import "WebRTC/RTCMacros.h"
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NS_ASSUME_NONNULL_BEGIN
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@class RTCVideoFrame;
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// RTCOpenGLVideoRenderer issues appropriate OpenGL commands to draw a frame to
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// the currently bound framebuffer. Supports OpenGL 3.2 and OpenGLES 2.0. OpenGL
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// framebuffer creation and management should be handled elsewhere using the
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// same context used to initialize this class.
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RTC_EXPORT
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@interface RTCOpenGLVideoRenderer : NSObject
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// The last successfully drawn frame. Used to avoid drawing frames unnecessarily
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// hence saving battery life by reducing load.
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@property(nonatomic, readonly) RTCVideoFrame *lastDrawnFrame;
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#if TARGET_OS_IPHONE
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- (instancetype)initWithContext:(EAGLContext *)context
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NS_DESIGNATED_INITIALIZER;
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#else
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- (instancetype)initWithContext:(NSOpenGLContext *)context
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NS_DESIGNATED_INITIALIZER;
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#endif
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// Draws |frame| onto the currently bound OpenGL framebuffer. |setupGL| must be
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// called before this function will succeed.
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- (BOOL)drawFrame:(RTCVideoFrame *)frame;
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// The following methods are used to manage OpenGL resources. On iOS
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// applications should release resources when placed in background for use in
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// the foreground application. In fact, attempting to call OpenGLES commands
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// while in background will result in application termination.
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// Sets up the OpenGL state needed for rendering.
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- (void)setupGL;
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// Tears down the OpenGL state created by |setupGL|.
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- (void)teardownGL;
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- (instancetype)init NS_UNAVAILABLE;
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@end
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NS_ASSUME_NONNULL_END
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