2 Copyright (c) 2013, Broadcom Europe Ltd
3 Copyright (c) 2013, Tim Gover
6 Redistribution and use in source and binary forms, with or without
7 modification, are permitted provided that the following conditions are met:
8 * Redistributions of source code must retain the above copyright
9 notice, this list of conditions and the following disclaimer.
10 * Redistributions in binary form must reproduce the above copyright
11 notice, this list of conditions and the following disclaimer in the
12 documentation and/or other materials provided with the distribution.
13 * Neither the name of the copyright holder nor the
14 names of its contributors may be used to endorse or promote products
15 derived from this software without specific prior written permission.
17 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
18 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
21 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
26 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #ifndef RASPITEX_UTIL_H_
30 #define RASPITEX_UTIL_H_
32 #define VCOS_LOG_CATEGORY (&raspitex_log_category)
38 #include <EGL/eglext.h>
40 #include "interface/vcos/vcos.h"
42 extern VCOS_LOG_CAT_T raspitex_log_category;
44 #define SHADER_MAX_ATTRIBUTES 16
45 #define SHADER_MAX_UNIFORMS 16
47 * Container for a simple shader program. The uniform and attribute locations
48 * are automatically setup by raspitex_build_shader_program.
50 typedef struct RASPITEXUTIL_SHADER_PROGRAM_T
52 const char *vertex_source; /// Pointer to vertex shader source
53 const char *fragment_source; /// Pointer to fragment shader source
55 /// Array of uniform names for raspitex_build_shader_program to process
56 const char *uniform_names[SHADER_MAX_UNIFORMS];
57 /// Array of attribute names for raspitex_build_shader_program to process
58 const char *attribute_names[SHADER_MAX_ATTRIBUTES];
60 GLint vs; /// Vertex shader handle
61 GLint fs; /// Fragment shader handle
62 GLint program; /// Shader program handle
64 /// The locations for uniforms defined in uniform_names
65 GLint uniform_locations[SHADER_MAX_UNIFORMS];
67 /// The locations for attributes defined in attribute_names
68 GLint attribute_locations[SHADER_MAX_ATTRIBUTES];
69 } RASPITEXUTIL_SHADER_PROGRAM_T;
72 /* Uncomment to enable extra GL error checking */
73 //#define CHECK_GL_ERRORS
74 #if defined(CHECK_GL_ERRORS)
77 GLenum err = GL_NO_ERROR; \
79 while ((err = glGetError())) \
81 vcos_log_error("GL error 0x%x in " #X "file %s line %d", err, __FILE__,__LINE__); \
82 vcos_assert(err == GL_NO_ERROR); \
89 #endif /* CHECK_GL_ERRORS */
91 /* Default GL scene ops functions */
92 int raspitexutil_create_native_window(RASPITEX_STATE *raspitex_state);
93 int raspitexutil_gl_init_1_0(RASPITEX_STATE *raspitex_state);
94 int raspitexutil_gl_init_2_0(RASPITEX_STATE *raspitex_state);
95 int raspitexutil_update_model(RASPITEX_STATE* raspitex_state);
96 int raspitexutil_redraw(RASPITEX_STATE* raspitex_state);
97 void raspitexutil_gl_term(RASPITEX_STATE *raspitex_state);
98 void raspitexutil_destroy_native_window(RASPITEX_STATE *raspitex_state);
99 int raspitexutil_create_textures(RASPITEX_STATE *raspitex_state);
100 int raspitexutil_update_texture(RASPITEX_STATE *raspitex_state,
101 EGLClientBuffer mm_buf);
102 int raspitexutil_update_y_texture(RASPITEX_STATE *raspitex_state,
103 EGLClientBuffer mm_buf);
104 int raspitexutil_update_u_texture(RASPITEX_STATE *raspitex_state,
105 EGLClientBuffer mm_buf);
106 int raspitexutil_update_v_texture(RASPITEX_STATE *raspitex_state,
107 EGLClientBuffer mm_buf);
108 int raspitexutil_capture_bgra(struct RASPITEX_STATE *state,
109 uint8_t **buffer, size_t *buffer_size);
110 void raspitexutil_close(RASPITEX_STATE* raspitex_state);
112 /* Utility functions */
113 int raspitexutil_build_shader_program(RASPITEXUTIL_SHADER_PROGRAM_T *p);
114 void raspitexutil_brga_to_rgba(uint8_t *buffer, size_t size);
116 #endif /* RASPITEX_UTIL_H_ */