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| 1 /* | |
| 2 * libjingle | |
| 3 * Copyright 2014 Google Inc. | |
| 4 * | |
| 5 * Redistribution and use in source and binary forms, with or without | |
| 6 * modification, are permitted provided that the following conditions are met: | |
| 7 * | |
| 8 * 1. Redistributions of source code must retain the above copyright notice, | |
| 9 * this list of conditions and the following disclaimer. | |
| 10 * 2. Redistributions in binary form must reproduce the above copyright notice, | |
| 11 * this list of conditions and the following disclaimer in the documentation | |
| 12 * and/or other materials provided with the distribution. | |
| 13 * 3. The name of the author may not be used to endorse or promote products | |
| 14 * derived from this software without specific prior written permission. | |
| 15 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
| 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
| 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO | |
| 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; | |
| 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
| 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | |
| 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF | |
| 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 26 */ | |
| 27 | |
| 28 #if !defined(__has_feature) || !__has_feature(objc_arc) | |
| 29 #error "This file requires ARC support." | |
| 30 #endif | |
| 31 | |
| 32 #import "RTCNSGLVideoView.h" | |
| 33 | |
| 34 #import <CoreVideo/CVDisplayLink.h> | |
| 35 #import <OpenGL/gl3.h> | |
| 36 #import "RTCI420Frame.h" | |
| 37 #import "RTCOpenGLVideoRenderer.h" | |
| 38 | |
| 39 @interface RTCNSGLVideoView () | |
| 40 // |i420Frame| is set when we receive a frame from a worker thread and is read | |
| 41 // from the display link callback so atomicity is required. | |
| 42 @property(atomic, strong) RTCI420Frame* i420Frame; | |
| 43 @property(atomic, strong) RTCOpenGLVideoRenderer* glRenderer; | |
| 44 - (void)drawFrame; | |
| 45 @end | |
| 46 | |
| 47 static CVReturn OnDisplayLinkFired(CVDisplayLinkRef displayLink, | |
| 48 const CVTimeStamp* now, | |
| 49 const CVTimeStamp* outputTime, | |
| 50 CVOptionFlags flagsIn, | |
| 51 CVOptionFlags* flagsOut, | |
| 52 void* displayLinkContext) { | |
| 53 RTCNSGLVideoView* view = (__bridge RTCNSGLVideoView*)displayLinkContext; | |
| 54 [view drawFrame]; | |
| 55 return kCVReturnSuccess; | |
| 56 } | |
| 57 | |
| 58 @implementation RTCNSGLVideoView { | |
| 59 CVDisplayLinkRef _displayLink; | |
| 60 } | |
| 61 | |
| 62 - (void)dealloc { | |
| 63 [self teardownDisplayLink]; | |
| 64 } | |
| 65 | |
| 66 - (void)drawRect:(NSRect)rect { | |
| 67 [self drawFrame]; | |
| 68 } | |
| 69 | |
| 70 - (void)reshape { | |
| 71 [super reshape]; | |
| 72 NSRect frame = [self frame]; | |
| 73 CGLLockContext([[self openGLContext] CGLContextObj]); | |
| 74 glViewport(0, 0, frame.size.width, frame.size.height); | |
| 75 CGLUnlockContext([[self openGLContext] CGLContextObj]); | |
| 76 } | |
| 77 | |
| 78 - (void)lockFocus { | |
| 79 NSOpenGLContext* context = [self openGLContext]; | |
| 80 [super lockFocus]; | |
| 81 if ([context view] != self) { | |
| 82 [context setView:self]; | |
| 83 } | |
| 84 [context makeCurrentContext]; | |
| 85 } | |
| 86 | |
| 87 - (void)prepareOpenGL { | |
| 88 [super prepareOpenGL]; | |
| 89 if (!self.glRenderer) { | |
| 90 self.glRenderer = | |
| 91 [[RTCOpenGLVideoRenderer alloc] initWithContext:[self openGLContext]]; | |
| 92 } | |
| 93 [self.glRenderer setupGL]; | |
| 94 [self setupDisplayLink]; | |
| 95 } | |
| 96 | |
| 97 - (void)clearGLContext { | |
| 98 [self.glRenderer teardownGL]; | |
| 99 self.glRenderer = nil; | |
| 100 [super clearGLContext]; | |
| 101 } | |
| 102 | |
| 103 #pragma mark - RTCVideoRenderer | |
| 104 | |
| 105 // These methods may be called on non-main thread. | |
| 106 - (void)setSize:(CGSize)size { | |
| 107 dispatch_async(dispatch_get_main_queue(), ^{ | |
| 108 [self.delegate videoView:self didChangeVideoSize:size]; | |
| 109 }); | |
| 110 } | |
| 111 | |
| 112 - (void)renderFrame:(RTCI420Frame*)frame { | |
| 113 self.i420Frame = frame; | |
| 114 } | |
| 115 | |
| 116 #pragma mark - Private | |
| 117 | |
| 118 - (void)drawFrame { | |
| 119 RTCI420Frame* i420Frame = self.i420Frame; | |
| 120 if (self.glRenderer.lastDrawnFrame != i420Frame) { | |
| 121 // This method may be called from CVDisplayLink callback which isn't on the | |
| 122 // main thread so we have to lock the GL context before drawing. | |
| 123 CGLLockContext([[self openGLContext] CGLContextObj]); | |
| 124 [self.glRenderer drawFrame:i420Frame]; | |
| 125 CGLUnlockContext([[self openGLContext] CGLContextObj]); | |
| 126 } | |
| 127 } | |
| 128 | |
| 129 - (void)setupDisplayLink { | |
| 130 if (_displayLink) { | |
| 131 return; | |
| 132 } | |
| 133 // Synchronize buffer swaps with vertical refresh rate. | |
| 134 GLint swapInt = 1; | |
| 135 [[self openGLContext] setValues:&swapInt forParameter:NSOpenGLCPSwapInterval]; | |
| 136 | |
| 137 // Create display link. | |
| 138 CVDisplayLinkCreateWithActiveCGDisplays(&_displayLink); | |
| 139 CVDisplayLinkSetOutputCallback(_displayLink, | |
| 140 &OnDisplayLinkFired, | |
| 141 (__bridge void*)self); | |
| 142 // Set the display link for the current renderer. | |
| 143 CGLContextObj cglContext = [[self openGLContext] CGLContextObj]; | |
| 144 CGLPixelFormatObj cglPixelFormat = [[self pixelFormat] CGLPixelFormatObj]; | |
| 145 CVDisplayLinkSetCurrentCGDisplayFromOpenGLContext( | |
| 146 _displayLink, cglContext, cglPixelFormat); | |
| 147 CVDisplayLinkStart(_displayLink); | |
| 148 } | |
| 149 | |
| 150 - (void)teardownDisplayLink { | |
| 151 if (!_displayLink) { | |
| 152 return; | |
| 153 } | |
| 154 CVDisplayLinkRelease(_displayLink); | |
| 155 _displayLink = NULL; | |
| 156 } | |
| 157 | |
| 158 @end | |
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Chromium Code Reviews
Issue 2296613002:
Delete talk directory, and references from build_ios_libs.sh. (Closed)
