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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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