81 lines
3.4 KiB
C
81 lines
3.4 KiB
C
/*
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* Copyright (c) 2014, 2015 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* framebuffer.h
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* Framebuffer utilities.
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*/
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#ifndef FRAMEBUFFER_H
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#define FRAMEBUFFER_H
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#include <stddef.h>
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#include <stdint.h>
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struct framebuffer
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{
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size_t pitch;
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uint32_t* buffer;
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size_t xres;
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size_t yres;
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};
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static inline uint32_t framebuffer_get_pixel(const struct framebuffer fb,
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size_t x,
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size_t y)
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{
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if ( fb.xres <= x || fb.yres <= y )
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return 0;
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return fb.buffer[y * fb.pitch + x];
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}
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static inline void framebuffer_set_pixel(const struct framebuffer fb,
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size_t x,
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size_t y,
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uint32_t value)
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{
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if ( fb.xres <= x || fb.yres <= y )
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return;
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fb.buffer[y * fb.pitch + x] = value;
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}
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struct framebuffer framebuffer_crop(struct framebuffer fb,
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size_t left,
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size_t top,
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size_t width,
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size_t height);
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void framebuffer_copy_to_framebuffer(const struct framebuffer dst,
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const struct framebuffer src);
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void framebuffer_copy_to_framebuffer_blend(const struct framebuffer dst,
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const struct framebuffer src);
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struct framebuffer framebuffer_crop_int(struct framebuffer fb,
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int left,
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int top,
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int width,
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int height);
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struct framebuffer framebuffer_cut_left_x(struct framebuffer fb, int offset);
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struct framebuffer framebuffer_cut_right_x(struct framebuffer fb, int offset);
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struct framebuffer framebuffer_cut_top_y(struct framebuffer fb, int offset);
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struct framebuffer framebuffer_cut_bottom_y(struct framebuffer fb, int offset);
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struct framebuffer framebuffer_center_x(struct framebuffer fb, int x, int width);
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struct framebuffer framebuffer_center_y(struct framebuffer fb, int y, int height);
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struct framebuffer framebuffer_right_x(struct framebuffer fb, int x, int width);
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struct framebuffer framebuffer_bottom_y(struct framebuffer fb, int y, int height);
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struct framebuffer framebuffer_center_text_x(struct framebuffer fb, int x, const char* str);
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struct framebuffer framebuffer_center_text_y(struct framebuffer fb, int y, const char* str);
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struct framebuffer framebuffer_right_text_x(struct framebuffer fb, int x, const char* str);
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struct framebuffer framebuffer_bottom_text_y(struct framebuffer fb, int y, const char* str);
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#endif
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