rhubarb-lip-sync/rhubarb/lib/webrtc-8d2248ff/talk/app/webrtc/objc/public/RTCOpenGLVideoRenderer.h

74 lines
3.0 KiB
Objective-C

/*
* libjingle
* Copyright 2014 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 <GLKit/GLKit.h>
#else
#import <AppKit/NSOpenGL.h>
#endif
@class RTCI420Frame;
// RTCOpenGLVideoRenderer issues appropriate OpenGL commands to draw a frame to
// the currently bound framebuffer. Supports OpenGL 3.2 and OpenGLES 2.0. OpenGL
// framebuffer creation and management should be handled elsewhere using the
// same context used to initialize this class.
@interface RTCOpenGLVideoRenderer : NSObject
// The last successfully drawn frame. Used to avoid drawing frames unnecessarily
// hence saving battery life by reducing load.
@property(nonatomic, readonly) RTCI420Frame* lastDrawnFrame;
#if TARGET_OS_IPHONE
- (instancetype)initWithContext:(EAGLContext*)context;
#else
- (instancetype)initWithContext:(NSOpenGLContext*)context;
#endif
// Draws |frame| onto the currently bound OpenGL framebuffer. |setupGL| must be
// called before this function will succeed.
- (BOOL)drawFrame:(RTCI420Frame*)frame;
// The following methods are used to manage OpenGL resources. On iOS
// applications should release resources when placed in background for use in
// the foreground application. In fact, attempting to call OpenGLES commands
// while in background will result in application termination.
// Sets up the OpenGL state needed for rendering.
- (void)setupGL;
// Tears down the OpenGL state created by |setupGL|.
- (void)teardownGL;
#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