84 lines
3.4 KiB
C
84 lines
3.4 KiB
C
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2014, 2015.
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This program is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program. If not, see <http://www.gnu.org/licenses/>.
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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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