diff options
author | Ian Moffett <ian@osmora.org> | 2024-06-24 22:55:29 -0400 |
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committer | Ian Moffett <ian@osmora.org> | 2024-06-24 22:55:29 -0400 |
commit | 236963e7563be3e3f8220dac7bb4af446928e194 (patch) | |
tree | e521ea226db0345bbb3679fffe09d96254b7dc73 /sys/dev/vcons/vcons.c | |
parent | 214eadc62b5578f76c98a38a28f8b3d80ac4d6ad (diff) |
Clean out for expt
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'sys/dev/vcons/vcons.c')
-rw-r--r-- | sys/dev/vcons/vcons.c | 227 |
1 files changed, 0 insertions, 227 deletions
diff --git a/sys/dev/vcons/vcons.c b/sys/dev/vcons/vcons.c deleted file mode 100644 index fe1a3f0..0000000 --- a/sys/dev/vcons/vcons.c +++ /dev/null @@ -1,227 +0,0 @@ -/* - * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of Hyra nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include <dev/vcons/vcons.h> -#include <dev/vcons/vcons_io.h> -#include <dev/video/fbdev.h> -#include <sys/syslog.h> -#include <sys/cdefs.h> -#include <string.h> - -__MODULE_NAME("kern_vcons"); -__KERNEL_META("$Hyra$: kern_vcons.c, Ian Marco Moffett, " - "Hyra video console code"); - -/* Get x or y values in pixels */ -#define PIX_CPY_X(scrptr) ((scrptr)->cpy_x * FONT_WIDTH) -#define PIX_CPY_Y(scrptr) ((scrptr)->cpy_y * FONT_HEIGHT) - -#define PIX_BOUNDS_MAX_X(scrptr) ((scrptr)->fbdev.width - FONT_WIDTH) -#define PIX_BOUNDS_MAX_Y(scrptr) ((scrptr)->fbdev.height - FONT_HEIGHT) - -static struct vcons_screen *screen = NULL; - -/* - * Draw the console cursor. - * - * @color: Cursor color - */ -static void -vcons_draw_cursor(struct vcons_screen *scr, uint32_t color) -{ - struct vcons_cursor *cursor = &scr->cursor; - struct fbdev fbdev = scr->fbdev; - - uint32_t *fbdev_mem = fbdev.mem; - uint32_t fbdev_idx = 0; - uint32_t cx, cy; - - for (size_t y = VCONS_CURSOR_HEIGHT; y > 0; --y) { - for (size_t x = VCONS_CURSOR_WIDTH; x > 0; --x) { - cx = cursor->old_xpos + x; - cy = cursor->old_ypos + y; - - fbdev_idx = fbdev_get_index(&fbdev, cx, cy); - fbdev_mem[fbdev_idx] = color; - } - } -} - -/* - * Clear everything out of the console. - */ -static void -vcons_clear_scr(struct vcons_screen *scr) -{ - struct fbdev fbdev = scr->fbdev; - - scr->cpy_x = 0, scr->cpy_y = 0; - - memset(scr->fbdev_mem, scr->bg, (fbdev.pitch * fbdev.height)); - vcons_update_cursor(scr); -} - -/* - * Renders a char onto the screen specified by `scr`. - * - * @x,y: In chars - */ -static void -vcons_draw_char(struct vcons_screen *scr, char c, uint32_t x, uint32_t y) -{ - uint32_t *fb_ptr; - size_t idx; - const uint8_t *glyph; - - /* Get a pointer to framebuffer memory */ - fb_ptr = scr->fbdev_mem; - - /* Get the specific glyph of `c` */ - glyph = &DEFAULT_FONT_DATA[(int)c*16]; - - for (uint32_t cy = 0; cy < FONT_HEIGHT; ++cy) { - for (uint32_t cx = 0; cx < FONT_WIDTH; ++cx) { - idx = fbdev_get_index(&scr->fbdev, x+FONT_WIDTH-cx, y+cy); - fb_ptr[idx] = __TEST(glyph[cy], __BIT(cx)) ? scr->fg : scr->bg; - } - } -} - -/* - * Update the cursor position. - * - * XXX: This function also accounts for the old cursor - * and clears it before drawing the new cursor. - */ -void -vcons_update_cursor(struct vcons_screen *scr) -{ - struct vcons_cursor *cursor = &scr->cursor; - - cursor->is_drawing = true; - - if (cursor->is_drawn) { - /* Clear old cursor */ - vcons_draw_cursor(scr, scr->bg); - } - - cursor->old_xpos = cursor->xpos; - cursor->old_ypos = cursor->ypos; - vcons_draw_cursor(scr, scr->fg); - - cursor->is_drawn = true; - cursor->is_drawing = false; -} - -/* - * Write out a character on the console. - * - * @c: Character to write. - */ -int -vcons_putch(struct vcons_screen *scr, char c) -{ - uint32_t x = PIX_CPY_X(scr); - uint32_t y = PIX_CPY_Y(scr); - struct vcons_cursor *cursor = &scr->cursor; - bool cursor_newline = false; - - while (cursor->is_drawing); - - if (scr == NULL) { - return 1; - } - - /* Check cursor bounds */ - if (cursor->xpos >= PIX_BOUNDS_MAX_X(scr)) { - cursor->xpos = FONT_WIDTH; - cursor->ypos += FONT_HEIGHT; - cursor_newline = true; - } - if (cursor->ypos >= PIX_BOUNDS_MAX_Y(scr)) { - cursor->xpos = FONT_WIDTH; - cursor->ypos = 0; - } - - /* Check text bounds */ - if (x >= PIX_BOUNDS_MAX_X(scr)) { - /* Wrap to the next row */ - ++scr->cpy_y, scr->cpy_x = 0; - x = PIX_CPY_X(scr), y = PIX_CPY_Y(scr); - } - if (y >= PIX_BOUNDS_MAX_Y(scr)) { - scr->cpy_y = 0; - scr->cpy_x = 0; - vcons_clear_scr(scr); - x = PIX_CPY_X(scr), y = PIX_CPY_Y(scr); - } - - if (!cursor_newline) { - cursor->xpos += FONT_WIDTH; - } - - vcons_update_cursor(scr); - vcons_draw_char(scr, c, x, y); - ++scr->cpy_x; - return 0; -} - -/* - * Write out a string on the console. - * - * @s: String to write. - */ -int -vcons_putstr(struct vcons_screen *scr, const char *s, size_t len) -{ - int status; - - for (size_t i = 0; i < len; ++i) { - if (vcons_process_output(scr, s[i]) > 0) - continue; - if ((status = vcons_putch(scr, s[i])) != 0) { - return status; - } - } - - return 0; -} - -void -vcons_attach(struct vcons_screen *scr) -{ - scr->fbdev = fbdev_get_front(); - scr->fbdev_mem = scr->fbdev.mem; - - scr->nrows = scr->fbdev.height; - scr->ncols = scr->fbdev.width; - - screen = scr; - vcons_clear_scr(scr); -} |