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1 /* | 1 /* |
2 * Copyright 2016 The WebRTC project authors. All Rights Reserved. | 2 * Copyright 2016 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 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 | 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 | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
11 #import "RTCShader.h" | 11 #import "RTCShader.h" |
12 | 12 |
13 #include <vector> | 13 #include <vector> |
14 | 14 |
15 #import "RTCShader+Private.h" | 15 #import "RTCShader+Private.h" |
| 16 #import "WebRTC/RTCLogging.h" |
16 #import "WebRTC/RTCVideoFrame.h" | 17 #import "WebRTC/RTCVideoFrame.h" |
17 | 18 |
18 #include "webrtc/base/optional.h" | 19 #include "webrtc/base/optional.h" |
19 | 20 |
20 // |kNumTextures| must not exceed 8, which is the limit in OpenGLES2. Two sets | 21 // |kNumTextures| must not exceed 8, which is the limit in OpenGLES2. Two sets |
21 // of 3 textures are used here, one for each of the Y, U and V planes. Having | 22 // of 3 textures are used here, one for each of the Y, U and V planes. Having |
22 // two sets alleviates CPU blockage in the event that the GPU is asked to render | 23 // two sets alleviates CPU blockage in the event that the GPU is asked to render |
23 // to a texture that is already in use. | 24 // to a texture that is already in use. |
24 static const GLsizei kNumTextureSets = 2; | 25 static const GLsizei kNumTextureSets = 2; |
25 static const GLsizei kNumTexturesPerSet = 3; | 26 static const GLsizei kNumTexturesPerSet = 3; |
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70 - (instancetype)initWithContext:(GlContextType *)context { | 71 - (instancetype)initWithContext:(GlContextType *)context { |
71 if (self = [super init]) { | 72 if (self = [super init]) { |
72 #if TARGET_OS_IPHONE | 73 #if TARGET_OS_IPHONE |
73 _hasUnpackRowLength = (context.API == kEAGLRenderingAPIOpenGLES3); | 74 _hasUnpackRowLength = (context.API == kEAGLRenderingAPIOpenGLES3); |
74 #else | 75 #else |
75 _hasUnpackRowLength = YES; | 76 _hasUnpackRowLength = YES; |
76 #endif | 77 #endif |
77 glPixelStorei(GL_UNPACK_ALIGNMENT, 1); | 78 glPixelStorei(GL_UNPACK_ALIGNMENT, 1); |
78 if (![self setupI420Program] || ![self setupTextures] || | 79 if (![self setupI420Program] || ![self setupTextures] || |
79 !RTCSetupVerticesForProgram(_i420Program, &_vertexBuffer, &_vertexArray)
) { | 80 !RTCSetupVerticesForProgram(_i420Program, &_vertexBuffer, &_vertexArray)
) { |
| 81 RTCLog(@"Failed to initialize RTCI420Shader."); |
80 self = nil; | 82 self = nil; |
81 } | 83 } |
82 } | 84 } |
83 return self; | 85 return self; |
84 } | 86 } |
85 | 87 |
86 - (void)dealloc { | 88 - (void)dealloc { |
87 glDeleteProgram(_i420Program); | 89 glDeleteProgram(_i420Program); |
88 glDeleteTextures(kNumTextures, _textures); | 90 glDeleteTextures(kNumTextures, _textures); |
89 glDeleteBuffers(1, &_vertexBuffer); | 91 glDeleteBuffers(1, &_vertexBuffer); |
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213 offset:textureOffset + 2 | 215 offset:textureOffset + 2 |
214 width:chromaWidth | 216 width:chromaWidth |
215 height:chromaHeight | 217 height:chromaHeight |
216 stride:frame.strideV]; | 218 stride:frame.strideV]; |
217 | 219 |
218 _currentTextureSet = (_currentTextureSet + 1) % kNumTextureSets; | 220 _currentTextureSet = (_currentTextureSet + 1) % kNumTextureSets; |
219 return YES; | 221 return YES; |
220 } | 222 } |
221 | 223 |
222 @end | 224 @end |
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