OLD | NEW |
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 |
(...skipping 120 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
131 // beginning at the first texcoord in the array. The last argument indicates | 131 // beginning at the first texcoord in the array. The last argument indicates |
132 // offset of data within |gVertices| as supplied to the vertex buffer. | 132 // offset of data within |gVertices| as supplied to the vertex buffer. |
133 glVertexAttribPointer(texcoord, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(GLfloat), | 133 glVertexAttribPointer(texcoord, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(GLfloat), |
134 (void *)(2 * sizeof(GLfloat))); | 134 (void *)(2 * sizeof(GLfloat))); |
135 glEnableVertexAttribArray(texcoord); | 135 glEnableVertexAttribArray(texcoord); |
136 | 136 |
137 return YES; | 137 return YES; |
138 } | 138 } |
139 | 139 |
140 // Set vertex data to the currently bound vertex buffer. | 140 // Set vertex data to the currently bound vertex buffer. |
141 void RTCSetVertexData(webrtc::VideoRotation rotation) { | 141 void RTCSetVertexData(RTCVideoRotation rotation) { |
142 // When modelview and projection matrices are identity (default) the world is | 142 // When modelview and projection matrices are identity (default) the world is |
143 // contained in the square around origin with unit size 2. Drawing to these | 143 // contained in the square around origin with unit size 2. Drawing to these |
144 // coordinates is equivalent to drawing to the entire screen. The texture is | 144 // coordinates is equivalent to drawing to the entire screen. The texture is |
145 // stretched over that square using texture coordinates (u, v) that range | 145 // stretched over that square using texture coordinates (u, v) that range |
146 // from (0, 0) to (1, 1) inclusive. Texture coordinates are flipped vertically | 146 // from (0, 0) to (1, 1) inclusive. Texture coordinates are flipped vertically |
147 // here because the incoming frame has origin in upper left hand corner but | 147 // here because the incoming frame has origin in upper left hand corner but |
148 // OpenGL expects origin in bottom left corner. | 148 // OpenGL expects origin in bottom left corner. |
149 std::array<std::array<GLfloat, 2>, 4> UVCoords = {{ | 149 std::array<std::array<GLfloat, 2>, 4> UVCoords = {{ |
150 {{0, 1}}, // Lower left. | 150 {{0, 1}}, // Lower left. |
151 {{1, 1}}, // Lower right. | 151 {{1, 1}}, // Lower right. |
152 {{1, 0}}, // Upper right. | 152 {{1, 0}}, // Upper right. |
153 {{0, 0}}, // Upper left. | 153 {{0, 0}}, // Upper left. |
154 }}; | 154 }}; |
155 | 155 |
156 // Rotate the UV coordinates. | 156 // Rotate the UV coordinates. |
157 int rotation_offset; | 157 int rotation_offset; |
158 switch (rotation) { | 158 switch (rotation) { |
159 case webrtc::kVideoRotation_0: | 159 case RTCVideoRotation_0: |
160 rotation_offset = 0; | 160 rotation_offset = 0; |
161 break; | 161 break; |
162 case webrtc::kVideoRotation_90: | 162 case RTCVideoRotation_90: |
163 rotation_offset = 1; | 163 rotation_offset = 1; |
164 break; | 164 break; |
165 case webrtc::kVideoRotation_180: | 165 case RTCVideoRotation_180: |
166 rotation_offset = 2; | 166 rotation_offset = 2; |
167 break; | 167 break; |
168 case webrtc::kVideoRotation_270: | 168 case RTCVideoRotation_270: |
169 rotation_offset = 3; | 169 rotation_offset = 3; |
170 break; | 170 break; |
171 } | 171 } |
172 std::rotate(UVCoords.begin(), UVCoords.begin() + rotation_offset, | 172 std::rotate(UVCoords.begin(), UVCoords.begin() + rotation_offset, |
173 UVCoords.end()); | 173 UVCoords.end()); |
174 | 174 |
175 const GLfloat gVertices[] = { | 175 const GLfloat gVertices[] = { |
176 // X, Y, U, V. | 176 // X, Y, U, V. |
177 -1, -1, UVCoords[0][0], UVCoords[0][1], | 177 -1, -1, UVCoords[0][0], UVCoords[0][1], |
178 1, -1, UVCoords[1][0], UVCoords[1][1], | 178 1, -1, UVCoords[1][0], UVCoords[1][1], |
179 1, 1, UVCoords[2][0], UVCoords[2][1], | 179 1, 1, UVCoords[2][0], UVCoords[2][1], |
180 -1, 1, UVCoords[3][0], UVCoords[3][1], | 180 -1, 1, UVCoords[3][0], UVCoords[3][1], |
181 }; | 181 }; |
182 | 182 |
183 glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(gVertices), gVertices); | 183 glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(gVertices), gVertices); |
184 } | 184 } |
OLD | NEW |