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117 lines
4.8 KiB
C
117 lines
4.8 KiB
C
/*
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Copyright (c) 2013, Broadcom Europe Ltd
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Copyright (c) 2013, Tim Gover
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of the copyright holder nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef RASPITEX_UTIL_H_
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#define RASPITEX_UTIL_H_
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#define VCOS_LOG_CATEGORY (&raspitex_log_category)
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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#include "RaspiTex.h"
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#include "interface/vcos/vcos.h"
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extern VCOS_LOG_CAT_T raspitex_log_category;
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#define SHADER_MAX_ATTRIBUTES 16
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#define SHADER_MAX_UNIFORMS 16
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/**
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* Container for a simple shader program. The uniform and attribute locations
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* are automatically setup by raspitex_build_shader_program.
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*/
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typedef struct RASPITEXUTIL_SHADER_PROGRAM_T
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{
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const char *vertex_source; /// Pointer to vertex shader source
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const char *fragment_source; /// Pointer to fragment shader source
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/// Array of uniform names for raspitex_build_shader_program to process
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const char *uniform_names[SHADER_MAX_UNIFORMS];
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/// Array of attribute names for raspitex_build_shader_program to process
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const char *attribute_names[SHADER_MAX_ATTRIBUTES];
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GLint vs; /// Vertex shader handle
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GLint fs; /// Fragment shader handle
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GLint program; /// Shader program handle
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/// The locations for uniforms defined in uniform_names
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GLint uniform_locations[SHADER_MAX_UNIFORMS];
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/// The locations for attributes defined in attribute_names
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GLint attribute_locations[SHADER_MAX_ATTRIBUTES];
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} RASPITEXUTIL_SHADER_PROGRAM_T;
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/* Uncomment to enable extra GL error checking */
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//#define CHECK_GL_ERRORS
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#if defined(CHECK_GL_ERRORS)
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#define GLCHK(X) \
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do { \
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GLenum err = GL_NO_ERROR; \
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X; \
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while ((err = glGetError())) \
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{ \
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vcos_log_error("GL error 0x%x in " #X "file %s line %d", err, __FILE__,__LINE__); \
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vcos_assert(err == GL_NO_ERROR); \
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exit(err); \
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} \
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} \
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while(0)
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#else
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#define GLCHK(X) X
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#endif /* CHECK_GL_ERRORS */
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/* Default GL scene ops functions */
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int raspitexutil_create_native_window(RASPITEX_STATE *raspitex_state);
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int raspitexutil_gl_init_1_0(RASPITEX_STATE *raspitex_state);
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int raspitexutil_gl_init_2_0(RASPITEX_STATE *raspitex_state);
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int raspitexutil_update_model(RASPITEX_STATE* raspitex_state);
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int raspitexutil_redraw(RASPITEX_STATE* raspitex_state);
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void raspitexutil_gl_term(RASPITEX_STATE *raspitex_state);
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void raspitexutil_destroy_native_window(RASPITEX_STATE *raspitex_state);
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int raspitexutil_create_textures(RASPITEX_STATE *raspitex_state);
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int raspitexutil_update_texture(RASPITEX_STATE *raspitex_state,
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EGLClientBuffer mm_buf);
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int raspitexutil_update_y_texture(RASPITEX_STATE *raspitex_state,
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EGLClientBuffer mm_buf);
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int raspitexutil_update_u_texture(RASPITEX_STATE *raspitex_state,
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EGLClientBuffer mm_buf);
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int raspitexutil_update_v_texture(RASPITEX_STATE *raspitex_state,
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EGLClientBuffer mm_buf);
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int raspitexutil_capture_bgra(struct RASPITEX_STATE *state,
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uint8_t **buffer, size_t *buffer_size);
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void raspitexutil_close(RASPITEX_STATE* raspitex_state);
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/* Utility functions */
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int raspitexutil_build_shader_program(RASPITEXUTIL_SHADER_PROGRAM_T *p);
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void raspitexutil_brga_to_rgba(uint8_t *buffer, size_t size);
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#endif /* RASPITEX_UTIL_H_ */
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