74 lines
3.0 KiB
C
74 lines
3.0 KiB
C
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/*
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* libjingle
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* Copyright 2014 Google Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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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@class RTCI420Frame;
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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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@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) RTCI420Frame* lastDrawnFrame;
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#if TARGET_OS_IPHONE
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- (instancetype)initWithContext:(EAGLContext*)context;
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#else
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- (instancetype)initWithContext:(NSOpenGLContext*)context;
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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:(RTCI420Frame*)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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#ifndef DOXYGEN_SHOULD_SKIP_THIS
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// Disallow init and don't add to documentation
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- (id)init __attribute__((
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unavailable("init is not a supported initializer for this class.")));
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#endif /* DOXYGEN_SHOULD_SKIP_THIS */
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@end
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