117 lines
4.2 KiB
C
117 lines
4.2 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2017 Glenn Ruben Bakke
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdio.h>
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#include <string.h>
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#include "py/obj.h"
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#include "framebuffer.h"
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#if MICROPY_PY_DISPLAY_FRAMEBUFFER
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void framebuffer_init(framebuffer_t * p_fb, framebuffer_init_t * p_init_conf) {
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uint16_t width = p_init_conf->width;
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uint16_t height = p_init_conf->height;
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if (p_init_conf->line_orientation == FRAMEBUFFER_LINE_DIR_HORIZONTAL) {
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uint16_t dirty_row_stride = height / 8;
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p_fb->fb_dirty = m_new(framebuffer_byte_t, dirty_row_stride);
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p_fb->fb_dirty_stride = dirty_row_stride;
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p_fb->fb_stride = width / 8;
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} else { // FRAMEBUFFER_LINE_DIR_VERTICAL
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uint16_t dirty_column_stride = width / 8;
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p_fb->fb_dirty = m_new(framebuffer_byte_t, dirty_column_stride);
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p_fb->fb_dirty_stride = dirty_column_stride;
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p_fb->fb_stride = height / 8;
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}
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p_fb->fb_new = m_new(framebuffer_byte_t, (width * height / 8));
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if (p_init_conf->double_buffer) {
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p_fb->fb_old = m_new(framebuffer_byte_t, (width * height / 8));
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}
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p_fb->line_orientation = p_init_conf->line_orientation;
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p_fb->screen_width = width;
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p_fb->screen_height = height;
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}
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void framebuffer_flip(framebuffer_t * p_fb) {
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if (p_fb->fb_double) {
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framebuffer_byte_t * old = p_fb->fb_old;
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p_fb->fb_old = p_fb->fb_new;
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p_fb->fb_new = old;
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}
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}
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void framebuffer_pixel_set(framebuffer_t * p_fb, uint16_t x, uint16_t y) {
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if (p_fb->line_orientation == FRAMEBUFFER_LINE_DIR_HORIZONTAL) {
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uint16_t col = (x / 8);
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uint16_t row = y;
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uint8_t bit_pos = x % 8;
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p_fb->fb_new[row * (p_fb->fb_stride) + col].byte |= (1 << bit_pos);
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p_fb->fb_dirty[y / 8].byte |= (uint8_t)(0x1 << y % 8);
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} else {
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uint16_t col = x;
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uint16_t row = (y / 8);
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uint8_t bit_pos = y % 8;
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p_fb->fb_new[col * (p_fb->fb_stride) + row].byte |= (1 << bit_pos);
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p_fb->fb_dirty[x / 8].byte |= (uint8_t)(0x1 << x % 8);
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}
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}
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void framebuffer_pixel_clear(framebuffer_t * p_fb, uint16_t x, uint16_t y) {
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if (p_fb->line_orientation == FRAMEBUFFER_LINE_DIR_HORIZONTAL) {
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uint16_t col = (x / 8);
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uint16_t row = y;
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uint8_t bit_pos = x % 8;
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p_fb->fb_new[row * (p_fb->fb_stride) + col].byte &= ~(1 << bit_pos);
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p_fb->fb_dirty[y / 8].byte |= (uint8_t)(0x1 << y % 8);
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} else {
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uint16_t col = x;
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uint16_t row = (y / 8);
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uint8_t bit_pos = y % 8;
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p_fb->fb_new[col * (p_fb->fb_stride) + row].byte &= ~(1 << bit_pos);
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p_fb->fb_dirty[x / 8].byte |= (uint8_t)(0x1 << x % 8);
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}
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}
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void framebuffer_clear(framebuffer_t * p_fb) {
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memset(p_fb->fb_new, 0x00, p_fb->screen_width * p_fb->screen_height / 8);
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memset(p_fb->fb_dirty, 0xFF, p_fb->fb_dirty_stride);
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}
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void framebuffer_fill(framebuffer_t * p_fb) {
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memset(p_fb->fb_new, 0xFF, p_fb->screen_width * p_fb->screen_height / 8);
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memset(p_fb->fb_dirty, 0xFF, p_fb->fb_dirty_stride);
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}
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#endif // MICROPY_PY_DISPLAY_FRAMEBUFFER
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