Reland of Split iOS sdk in to separate targets

webrtc/sdk/objc/Framework/Classes/RTCEAGLVideoView.m

Index: webrtc/sdk/objc/Framework/Classes/RTCEAGLVideoView.m
diff --git a/webrtc/sdk/objc/Framework/Classes/RTCEAGLVideoView.m b/webrtc/sdk/objc/Framework/Classes/RTCEAGLVideoView.m
deleted file mode 100644
index 1fb03bc909e27305eee7eb41bd9f6066983f7e3e..0000000000000000000000000000000000000000
--- a/webrtc/sdk/objc/Framework/Classes/RTCEAGLVideoView.m
+++ /dev/null
@@ -1,297 +0,0 @@
-/*
- *  Copyright 2015 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 "WebRTC/RTCEAGLVideoView.h"
-
-#import <GLKit/GLKit.h>
-
-#import "RTCShader+Private.h"
-#import "WebRTC/RTCLogging.h"
-#import "WebRTC/RTCVideoFrame.h"
-
-// RTCDisplayLinkTimer wraps a CADisplayLink and is set to fire every two screen
-// refreshes, which should be 30fps. We wrap the display link in order to avoid
-// a retain cycle since CADisplayLink takes a strong reference onto its target.
-// The timer is paused by default.
-@interface RTCDisplayLinkTimer : NSObject
-
-@property(nonatomic) BOOL isPaused;
-
-- (instancetype)initWithTimerHandler:(void (^)(void))timerHandler;
-- (void)invalidate;
-
-@end
-
-@implementation RTCDisplayLinkTimer {
-  CADisplayLink *_displayLink;
-  void (^_timerHandler)(void);
-}
-
-- (instancetype)initWithTimerHandler:(void (^)(void))timerHandler {
-  NSParameterAssert(timerHandler);
-  if (self = [super init]) {
-    _timerHandler = timerHandler;
-    _displayLink =
-        [CADisplayLink displayLinkWithTarget:self
-                                    selector:@selector(displayLinkDidFire:)];
-    _displayLink.paused = YES;
-    // Set to half of screen refresh, which should be 30fps.
-    [_displayLink setFrameInterval:2];
-    [_displayLink addToRunLoop:[NSRunLoop currentRunLoop]
-                       forMode:NSRunLoopCommonModes];
-  }
-  return self;
-}
-
-- (void)dealloc {
-  [self invalidate];
-}
-
-- (BOOL)isPaused {
-  return _displayLink.paused;
-}
-
-- (void)setIsPaused:(BOOL)isPaused {
-  _displayLink.paused = isPaused;
-}
-
-- (void)invalidate {
-  [_displayLink invalidate];
-}
-
-- (void)displayLinkDidFire:(CADisplayLink *)displayLink {
-  _timerHandler();
-}
-
-@end
-
-// RTCEAGLVideoView wraps a GLKView which is setup with
-// enableSetNeedsDisplay = NO for the purpose of gaining control of
-// exactly when to call -[GLKView display]. This need for extra
-// control is required to avoid triggering method calls on GLKView
-// that results in attempting to bind the underlying render buffer
-// when the drawable size would be empty which would result in the
-// error GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT. -[GLKView display] is
-// the method that will trigger the binding of the render
-// buffer. Because the standard behaviour of -[UIView setNeedsDisplay]
-// is disabled for the reasons above, the RTCEAGLVideoView maintains
-// its own |isDirty| flag.
-
-@interface RTCEAGLVideoView () <GLKViewDelegate>
-// |videoFrame| is set when we receive a frame from a worker thread and is read
-// from the display link callback so atomicity is required.
-@property(atomic, strong) RTCVideoFrame *videoFrame;
-@property(nonatomic, readonly) GLKView *glkView;
-@end
-
-@implementation RTCEAGLVideoView {
-  RTCDisplayLinkTimer *_timer;
-  EAGLContext *_glContext;
-  // This flag should only be set and read on the main thread (e.g. by
-  // setNeedsDisplay)
-  BOOL _isDirty;
-  id<RTCShader> _i420Shader;
-  id<RTCShader> _nv12Shader;
-  RTCVideoFrame *_lastDrawnFrame;
-}
-
-@synthesize delegate = _delegate;
-@synthesize videoFrame = _videoFrame;
-@synthesize glkView = _glkView;
-
-- (instancetype)initWithFrame:(CGRect)frame {
-  if (self = [super initWithFrame:frame]) {
-    [self configure];
-  }
-  return self;
-}
-
-- (instancetype)initWithCoder:(NSCoder *)aDecoder {
-  if (self = [super initWithCoder:aDecoder]) {
-    [self configure];
-  }
-  return self;
-}
-
-- (void)configure {
-  EAGLContext *glContext =
-    [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES3];
-  if (!glContext) {
-    glContext = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
-  }
-  _glContext = glContext;
-
-  // GLKView manages a framebuffer for us.
-  _glkView = [[GLKView alloc] initWithFrame:CGRectZero
-                                    context:_glContext];
-  _glkView.drawableColorFormat = GLKViewDrawableColorFormatRGBA8888;
-  _glkView.drawableDepthFormat = GLKViewDrawableDepthFormatNone;
-  _glkView.drawableStencilFormat = GLKViewDrawableStencilFormatNone;
-  _glkView.drawableMultisample = GLKViewDrawableMultisampleNone;
-  _glkView.delegate = self;
-  _glkView.layer.masksToBounds = YES;
-  _glkView.enableSetNeedsDisplay = NO;
-  [self addSubview:_glkView];
-
-  // Listen to application state in order to clean up OpenGL before app goes
-  // away.
-  NSNotificationCenter *notificationCenter =
-    [NSNotificationCenter defaultCenter];
-  [notificationCenter addObserver:self
-                         selector:@selector(willResignActive)
-                             name:UIApplicationWillResignActiveNotification
-                           object:nil];
-  [notificationCenter addObserver:self
-                         selector:@selector(didBecomeActive)
-                             name:UIApplicationDidBecomeActiveNotification
-                           object:nil];
-
-  // Frames are received on a separate thread, so we poll for current frame
-  // using a refresh rate proportional to screen refresh frequency. This
-  // occurs on the main thread.
-  __weak RTCEAGLVideoView *weakSelf = self;
-  _timer = [[RTCDisplayLinkTimer alloc] initWithTimerHandler:^{
-      RTCEAGLVideoView *strongSelf = weakSelf;
-      [strongSelf displayLinkTimerDidFire];
-    }];
-  [self setupGL];
-}
-
-- (void)dealloc {
-  [[NSNotificationCenter defaultCenter] removeObserver:self];
-  UIApplicationState appState =
-      [UIApplication sharedApplication].applicationState;
-  if (appState == UIApplicationStateActive) {
-    [self teardownGL];
-  }
-  [_timer invalidate];
-  if (_glContext && [EAGLContext currentContext] == _glContext) {
-    [EAGLContext setCurrentContext:nil];
-  }
-}
-
-#pragma mark - UIView
-
-- (void)setNeedsDisplay {
-  [super setNeedsDisplay];
-  _isDirty = YES;
-}
-
-- (void)setNeedsDisplayInRect:(CGRect)rect {
-  [super setNeedsDisplayInRect:rect];
-  _isDirty = YES;
-}
-
-- (void)layoutSubviews {
-  [super layoutSubviews];
-  _glkView.frame = self.bounds;
-}
-
-#pragma mark - GLKViewDelegate
-
-// This method is called when the GLKView's content is dirty and needs to be
-// redrawn. This occurs on main thread.
-- (void)glkView:(GLKView *)view drawInRect:(CGRect)rect {
-  // The renderer will draw the frame to the framebuffer corresponding to the
-  // one used by |view|.
-  RTCVideoFrame *frame = self.videoFrame;
-  if (!frame || frame == _lastDrawnFrame) {
-    return;
-  }
-  [self ensureGLContext];
-  glClear(GL_COLOR_BUFFER_BIT);
-  id<RTCShader> shader = nil;
-  if (frame.nativeHandle) {
-    if (!_nv12Shader) {
-      _nv12Shader = [[RTCNativeNV12Shader alloc] initWithContext:_glContext];
-    }
-    shader = _nv12Shader;
-  } else {
-    if (!_i420Shader) {
-      _i420Shader = [[RTCI420Shader alloc] initWithContext:_glContext];
-    }
-    shader = _i420Shader;
-  }
-  if (shader && [shader drawFrame:frame]) {
-    _lastDrawnFrame = frame;
-  } else {
-    RTCLog(@"Failed to draw frame.");
-  }
-}
-
-#pragma mark - RTCVideoRenderer
-
-// These methods may be called on non-main thread.
-- (void)setSize:(CGSize)size {
-  __weak RTCEAGLVideoView *weakSelf = self;
-  dispatch_async(dispatch_get_main_queue(), ^{
-    RTCEAGLVideoView *strongSelf = weakSelf;
-    [strongSelf.delegate videoView:strongSelf didChangeVideoSize:size];
-  });
-}
-
-- (void)renderFrame:(RTCVideoFrame *)frame {
-  self.videoFrame = frame;
-}
-
-#pragma mark - Private
-
-- (void)displayLinkTimerDidFire {
-  // Don't render unless video frame have changed or the view content
-  // has explicitly been marked dirty.
-  if (!_isDirty && _lastDrawnFrame == self.videoFrame) {
-    return;
-  }
-
-  // Always reset isDirty at this point, even if -[GLKView display]
-  // won't be called in the case the drawable size is empty.
-  _isDirty = NO;
-
-  // Only call -[GLKView display] if the drawable size is
-  // non-empty. Calling display will make the GLKView setup its
-  // render buffer if necessary, but that will fail with error
-  // GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT if size is empty.
-  if (self.bounds.size.width > 0 && self.bounds.size.height > 0) {
-    [_glkView display];
-  }
-}
-
-- (void)setupGL {
-  self.videoFrame = nil;
-  [self ensureGLContext];
-  glDisable(GL_DITHER);
-  _timer.isPaused = NO;
-}
-
-- (void)teardownGL {
-  self.videoFrame = nil;
-  _timer.isPaused = YES;
-  [_glkView deleteDrawable];
-  [self ensureGLContext];
-  _i420Shader = nil;
-  _nv12Shader = nil;
-}
-
-- (void)didBecomeActive {
-  [self setupGL];
-}
-
-- (void)willResignActive {
-  [self teardownGL];
-}
-
-- (void)ensureGLContext {
-  NSAssert(_glContext, @"context shouldn't be nil");
-  if ([EAGLContext currentContext] != _glContext) {
-    [EAGLContext setCurrentContext:_glContext];
-  }
-}
-
-@end