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| 1 /* |
| 2 * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license |
| 5 * that can be found in the LICENSE file in the root of the source |
| 6 * tree. An additional intellectual property rights grant can be found |
| 7 * in the file PATENTS. All contributing project authors may |
| 8 * be found in the AUTHORS file in the root of the source tree. |
| 9 */ |
| 10 |
| 11 #if !defined(__has_feature) || !__has_feature(objc_arc) |
| 12 #error "This file requires ARC support." |
| 13 #endif |
| 14 |
| 15 #include <memory> |
| 16 |
| 17 #include "webrtc/modules/video_render/ios/video_render_ios_view.h" |
| 18 #include "webrtc/system_wrappers/include/trace.h" |
| 19 |
| 20 using namespace webrtc; |
| 21 |
| 22 @implementation VideoRenderIosView { |
| 23 EAGLContext* _context; |
| 24 std::unique_ptr<webrtc::OpenGles20> _gles_renderer20; |
| 25 int _frameBufferWidth; |
| 26 int _frameBufferHeight; |
| 27 unsigned int _defaultFrameBuffer; |
| 28 unsigned int _colorRenderBuffer; |
| 29 } |
| 30 |
| 31 @synthesize context = context_; |
| 32 |
| 33 + (Class)layerClass { |
| 34 return [CAEAGLLayer class]; |
| 35 } |
| 36 |
| 37 - (id)initWithCoder:(NSCoder*)coder { |
| 38 // init super class |
| 39 self = [super initWithCoder:coder]; |
| 40 if (self) { |
| 41 _gles_renderer20.reset(new OpenGles20()); |
| 42 } |
| 43 return self; |
| 44 } |
| 45 |
| 46 - (id)init { |
| 47 // init super class |
| 48 self = [super init]; |
| 49 if (self) { |
| 50 _gles_renderer20.reset(new OpenGles20()); |
| 51 } |
| 52 return self; |
| 53 } |
| 54 |
| 55 - (id)initWithFrame:(CGRect)frame { |
| 56 // init super class |
| 57 self = [super initWithFrame:frame]; |
| 58 if (self) { |
| 59 _gles_renderer20.reset(new OpenGles20()); |
| 60 } |
| 61 return self; |
| 62 } |
| 63 |
| 64 - (void)dealloc { |
| 65 if (_defaultFrameBuffer) { |
| 66 glDeleteFramebuffers(1, &_defaultFrameBuffer); |
| 67 _defaultFrameBuffer = 0; |
| 68 } |
| 69 |
| 70 if (_colorRenderBuffer) { |
| 71 glDeleteRenderbuffers(1, &_colorRenderBuffer); |
| 72 _colorRenderBuffer = 0; |
| 73 } |
| 74 |
| 75 [EAGLContext setCurrentContext:nil]; |
| 76 } |
| 77 |
| 78 - (NSString*)description { |
| 79 return [NSString stringWithFormat: |
| 80 @"A WebRTC implemented subclass of UIView." |
| 81 "+Class method is overwritten, along with custom methods"]; |
| 82 } |
| 83 |
| 84 - (BOOL)createContext { |
| 85 // create OpenGLES context from self layer class |
| 86 CAEAGLLayer* eagl_layer = (CAEAGLLayer*)self.layer; |
| 87 eagl_layer.opaque = YES; |
| 88 eagl_layer.drawableProperties = |
| 89 [NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithBool:NO], |
| 90 kEAGLDrawablePropertyRetainedBacking, |
| 91 kEAGLColorFormatRGBA8, |
| 92 kEAGLDrawablePropertyColorFormat, |
| 93 nil]; |
| 94 _context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2]; |
| 95 |
| 96 if (!_context) { |
| 97 return NO; |
| 98 } |
| 99 |
| 100 if (![EAGLContext setCurrentContext:_context]) { |
| 101 return NO; |
| 102 } |
| 103 |
| 104 // generates and binds the OpenGLES buffers |
| 105 glGenFramebuffers(1, &_defaultFrameBuffer); |
| 106 glBindFramebuffer(GL_FRAMEBUFFER, _defaultFrameBuffer); |
| 107 |
| 108 // Create color render buffer and allocate backing store. |
| 109 glGenRenderbuffers(1, &_colorRenderBuffer); |
| 110 glBindRenderbuffer(GL_RENDERBUFFER, _colorRenderBuffer); |
| 111 [_context renderbufferStorage:GL_RENDERBUFFER |
| 112 fromDrawable:(CAEAGLLayer*)self.layer]; |
| 113 glGetRenderbufferParameteriv( |
| 114 GL_RENDERBUFFER, GL_RENDERBUFFER_WIDTH, &_frameBufferWidth); |
| 115 glGetRenderbufferParameteriv( |
| 116 GL_RENDERBUFFER, GL_RENDERBUFFER_HEIGHT, &_frameBufferHeight); |
| 117 glFramebufferRenderbuffer(GL_FRAMEBUFFER, |
| 118 GL_COLOR_ATTACHMENT0, |
| 119 GL_RENDERBUFFER, |
| 120 _colorRenderBuffer); |
| 121 |
| 122 if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) { |
| 123 return NO; |
| 124 } |
| 125 |
| 126 // set the frame buffer |
| 127 glBindFramebuffer(GL_FRAMEBUFFER, _defaultFrameBuffer); |
| 128 glViewport(0, 0, self.frame.size.width, self.frame.size.height); |
| 129 |
| 130 return _gles_renderer20->Setup([self bounds].size.width, |
| 131 [self bounds].size.height); |
| 132 } |
| 133 |
| 134 - (BOOL)presentFramebuffer { |
| 135 if (![_context presentRenderbuffer:GL_RENDERBUFFER]) { |
| 136 WEBRTC_TRACE(kTraceWarning, |
| 137 kTraceVideoRenderer, |
| 138 0, |
| 139 "%s:%d [context present_renderbuffer] " |
| 140 "returned false", |
| 141 __FUNCTION__, |
| 142 __LINE__); |
| 143 } |
| 144 return YES; |
| 145 } |
| 146 |
| 147 - (BOOL)renderFrame:(VideoFrame*)frameToRender { |
| 148 if (![EAGLContext setCurrentContext:_context]) { |
| 149 return NO; |
| 150 } |
| 151 |
| 152 return _gles_renderer20->Render(*frameToRender); |
| 153 } |
| 154 |
| 155 - (BOOL)setCoordinatesForZOrder:(const float)zOrder |
| 156 Left:(const float)left |
| 157 Top:(const float)top |
| 158 Right:(const float)right |
| 159 Bottom:(const float)bottom { |
| 160 return _gles_renderer20->SetCoordinates(zOrder, left, top, right, bottom); |
| 161 } |
| 162 |
| 163 @end |
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