Andy McFadden | 441e847 | 2013-10-18 07:31:41 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2013 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #ifndef SCREENRECORD_PROGRAM_H |
| 18 | #define SCREENRECORD_PROGRAM_H |
| 19 | |
| 20 | #include <utils/Errors.h> |
| 21 | |
| 22 | #include <EGL/egl.h> |
| 23 | #include <GLES2/gl2.h> |
| 24 | |
| 25 | namespace android { |
| 26 | |
| 27 | /* |
| 28 | * Utility class for GLES rendering. |
| 29 | * |
| 30 | * Not thread-safe. |
| 31 | */ |
| 32 | class Program { |
| 33 | public: |
| 34 | enum ProgramType { PROGRAM_UNKNOWN=0, PROGRAM_EXTERNAL_TEXTURE, |
| 35 | PROGRAM_TEXTURE_2D }; |
| 36 | |
| 37 | Program() : |
| 38 | mProgramType(PROGRAM_UNKNOWN), |
| 39 | mProgram(0), |
| 40 | maPositionLoc(0), |
| 41 | maTextureCoordLoc(0), |
| 42 | muMVPMatrixLoc(0), |
| 43 | muGLCMatrixLoc(0), |
| 44 | muTextureLoc(0) |
| 45 | {} |
| 46 | ~Program() { release(); } |
| 47 | |
| 48 | // Initialize the program for use with the specified texture type. |
| 49 | status_t setup(ProgramType type); |
| 50 | |
| 51 | // Release the program and associated resources. |
| 52 | void release(); |
| 53 | |
Andy McFadden | 587c6fe | 2014-02-25 18:29:06 -0800 | [diff] [blame] | 54 | // Blit the specified texture to { x, y, x+w, y+h }. Inverts the |
| 55 | // content if "invert" is set. |
Andy McFadden | 441e847 | 2013-10-18 07:31:41 -0700 | [diff] [blame] | 56 | status_t blit(GLuint texName, const float* texMatrix, |
Andy McFadden | 587c6fe | 2014-02-25 18:29:06 -0800 | [diff] [blame] | 57 | int32_t x, int32_t y, int32_t w, int32_t h, |
| 58 | bool invert = false) const; |
Andy McFadden | 441e847 | 2013-10-18 07:31:41 -0700 | [diff] [blame] | 59 | |
| 60 | // Draw a number of triangles. |
| 61 | status_t drawTriangles(GLuint texName, const float* texMatrix, |
| 62 | const float* vertices, const float* texes, size_t count) const; |
| 63 | |
| 64 | static const float kIdentity[]; |
| 65 | |
| 66 | private: |
| 67 | Program(const Program&); |
| 68 | Program& operator=(const Program&); |
| 69 | |
| 70 | // Common code for draw functions. |
| 71 | status_t beforeDraw(GLuint texName, const float* texMatrix, |
Andy McFadden | 587c6fe | 2014-02-25 18:29:06 -0800 | [diff] [blame] | 72 | const float* vertices, const float* texes, bool invert) const; |
Andy McFadden | 441e847 | 2013-10-18 07:31:41 -0700 | [diff] [blame] | 73 | status_t afterDraw() const; |
| 74 | |
| 75 | // GLES 2 shader utilities. |
| 76 | status_t createProgram(GLuint* outPgm, const char* vertexShader, |
| 77 | const char* fragmentShader); |
| 78 | static status_t compileShader(GLenum shaderType, const char* src, |
| 79 | GLuint* outShader); |
| 80 | static status_t linkShaderProgram(GLuint vs, GLuint fs, GLuint* outPgm); |
| 81 | |
| 82 | ProgramType mProgramType; |
| 83 | GLuint mProgram; |
| 84 | |
| 85 | GLint maPositionLoc; |
| 86 | GLint maTextureCoordLoc; |
| 87 | GLint muMVPMatrixLoc; |
| 88 | GLint muGLCMatrixLoc; |
| 89 | GLint muTextureLoc; |
| 90 | }; |
| 91 | |
| 92 | }; // namespace android |
| 93 | |
| 94 | #endif /*SCREENRECORD_PROGRAM_H*/ |