1 /*
2  *  Copyright (c) 2012 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 #ifndef WEBRTC_MODULES_VIDEO_RENDER_MAIN_SOURCE_ANDROID_VIDEO_RENDER_OPENGLES20_H_
12 #define WEBRTC_MODULES_VIDEO_RENDER_MAIN_SOURCE_ANDROID_VIDEO_RENDER_OPENGLES20_H_
13 
14 #include "webrtc/modules/video_render/video_render_defines.h"
15 
16 #include <GLES2/gl2.h>
17 #include <GLES2/gl2ext.h>
18 
19 namespace webrtc
20 {
21 
22 class VideoRenderOpenGles20 {
23  public:
24   VideoRenderOpenGles20(int32_t id);
25   ~VideoRenderOpenGles20();
26 
27   int32_t Setup(int32_t widht, int32_t height);
28   int32_t Render(const VideoFrame& frameToRender);
29   int32_t SetCoordinates(int32_t zOrder, const float left, const float top,
30                          const float right, const float bottom);
31 
32  private:
33   void printGLString(const char *name, GLenum s);
34   void checkGlError(const char* op);
35   GLuint loadShader(GLenum shaderType, const char* pSource);
36   GLuint createProgram(const char* pVertexSource,
37                        const char* pFragmentSource);
38   void SetupTextures(const VideoFrame& frameToRender);
39   void UpdateTextures(const VideoFrame& frameToRender);
40 
41   int32_t _id;
42   GLuint _textureIds[3]; // Texture id of Y,U and V texture.
43   GLuint _program;
44   GLsizei _textureWidth;
45   GLsizei _textureHeight;
46 
47   GLfloat _vertices[20];
48   static const char g_indices[];
49 
50   static const char g_vertextShader[];
51   static const char g_fragmentShader[];
52 
53 };
54 
55 }  // namespace webrtc
56 
57 #endif  // WEBRTC_MODULES_VIDEO_RENDER_MAIN_SOURCE_ANDROID_VIDEO_RENDER_OPENGLES20_H_
58