use sff font format for console printing

include/console.h

@@ -2,7 +2,7 @@
 #define KARLOS_CONSOLE_H
 
 void console_init(void);
-void console_draw(int col, int row);
+void console_draw(unsigned int row, unsigned int col);
 void console_scroll(void);
 void console_clear(void);
 void visual_putc(char c);

include/std.h

@@ -53,4 +53,4 @@ void panic(const char *file, unsigned int line, const char *msg);
 
 #define STATIC_ASSERT(expr) _Static_assert(expr)
 
-#endif // KARLOS_UTILITY_H
+#endif

src/console.c

@@ -1,120 +1,94 @@
 #include "std.h"
 #include "console.h"
 #include "framebuffer.h"
+#include "tar.h"
+#include "sff.h"
 
 #include <bootboot.h>
 
-extern BOOTBOOT bootboot;
-
 /**************************
  * Display text on screen *
  **************************/
-typedef struct {
-    uint32_t magic;
-    uint32_t version;
-    uint32_t headersize;
-    uint32_t flags;
-    uint32_t numglyph;
-    uint32_t bytesperglyph;
-    uint32_t height;
-    uint32_t width;
-    uint8_t glyphs;
-} __attribute__((packed)) psf2_t;
 
-extern volatile unsigned char _binary_font_psf_start;
+typedef uint32_t unicode_char;
-
+#define CONSOLE_MAX_ROWS 100
-uint32_t console_output[200 * 100];
+#define CONSOLE_MAX_COLS 200
-int console_max_rows;
+unicode_char console_output[CONSOLE_MAX_ROWS * CONSOLE_MAX_COLS];
-int console_max_cols;
+int console_num_rows;
+int console_num_cols;
 
 int text_cursor_x;
 int text_cursor_y;
 
-static unsigned char *font_get_glyph(char c)
+struct sff_file font_file;
-{
-    psf2_t *font = (psf2_t*)&_binary_font_psf_start;
-    unsigned char *glyphArray = (unsigned char *)&_binary_font_psf_start + font->headersize;
-
-    if (c == 0) return NULL;
-    if (c >= font->numglyph) return NULL;
-
-    return glyphArray + c * font->bytesperglyph;
-}
 
 void console_init(void)
 {
-    psf2_t *font = (psf2_t*)&_binary_font_psf_start;
+
-    console_max_cols = bootboot.fb_width / (font->width+1);
+    struct tar_header hd;
-    if (console_max_cols > 200) console_max_cols = 200;
+    ASSERT(tar_get_file("font.sff", &hd));
-    console_max_rows = bootboot.fb_height / (font->height+1);
+    ASSERT(sff_decode(hd.data, &font_file));
-    if (console_max_rows > 100) console_max_rows = 100;
+
+    console_num_cols = fb_width() / font_file.char_width;
+    if (console_num_cols > CONSOLE_MAX_COLS) console_num_cols = CONSOLE_MAX_COLS;
+    console_num_rows = fb_height() / font_file.char_height;
+    if (console_num_rows > CONSOLE_MAX_ROWS) console_num_rows = CONSOLE_MAX_ROWS;
 }
 
-void console_draw(int col, int row)
+void console_draw(unsigned int row, unsigned int col) {
-{
+    unicode_char chr = console_output[row * console_num_cols + col];
-    uint8_t *fb = fb_back ? fb_back : fb_front;
+    unsigned int cx = col * font_file.char_width;
-
+    unsigned int cy = row * font_file.char_height;
-    psf2_t *font = (psf2_t*)&_binary_font_psf_start;
+    struct sff_glyph_offset off;
-    int line, mask, offs;
+    if (sff_find_glyph(&font_file, chr, &off)) {
-    int bpl = (font->width + 7)/8;
+        for (unsigned int px_row = 0; px_row < font_file.char_height; px_row++) {
-
+            for (unsigned int px_col = 0; px_col < font_file.char_width; px_col++) {
-    int cx = col * (font->width + 1);
+                unsigned int x = col * font_file.char_width + px_col;
-    int cy = row * (font->height + 1);
+                unsigned int y = row * font_file.char_height + px_row;
-
+                uint8_t px_value = sff_get_pixel_value(&font_file, off, px_row, px_col);
-    uint32_t chr = console_output[col + row * console_max_cols];
+                uint8_t brightness = 255 * (unsigned int)px_value / 15;
-    if (chr == 0) chr = ' ';
+                fb_set_px(x, y, COLOR(brightness, brightness, brightness));
-
-    unsigned char *glyph = font_get_glyph(chr);
-
-    offs = 4 * cx + cy * bootboot.fb_scanline;
-
-    for (int y = 0; y < font->height; y++) {
-        line = offs;
-        mask = 1 << (font->width - 1);
-        for (int x = 0; x < font->width; x++) {
-            *((uint32_t*)((uint64_t)fb+line)) = ((int)*glyph) & (mask)?0xFFFFFF:0;
-            mask >>= 1;
-            line += 4;
             }
-        *((uint32_t*)((uint64_t)fb+line))=0;
-        glyph+=bpl;
-        offs+=bootboot.fb_scanline;
         }
-
+    }
-    fb_damage(cx, cy, cx + font->width, cy + font->height);
+    fb_damage(RECT_XYWH(cx, cy, font_file.char_width, font_file.char_height));
 }
 
 void console_scroll(void)
 {
-    for (int i = 0; i+1 < console_max_rows; i++) {
+    for (int i = 0; i < console_num_rows - 1; i++) {
-        memcpy(&console_output[i * console_max_cols],
+        memcpy(&console_output[i * console_num_cols],
-                &console_output[(i+1) * console_max_cols],
+            &console_output[(i+1) * console_num_cols],
-                console_max_cols * sizeof *console_output);
+            console_num_cols * sizeof *console_output);
     }
-    memset(&console_output[(console_max_rows-1) * console_max_cols], 0,
+    memset(&console_output[(console_num_rows-1) * console_num_cols], 0,
-            console_max_cols * sizeof *console_output);
+            console_num_cols * sizeof *console_output);
     text_cursor_y--;
 
-    for (int r = 0; r < console_max_rows; r++) {
+    for (int r = 0; r < console_num_rows; r++) {
-        for (int c = 0; c < console_max_cols; c++) {
+        for (int c = 0; c < console_num_cols; c++) {
-            console_draw(c, r);
+            console_draw(r, c);
         }
     }
 
-    fb_damage(0, 0, bootboot.fb_width, bootboot.fb_height);
+    fb_damage(RECT(0, 0, fb_width(), fb_height()));
     fb_refresh();
 }
 
 void console_clear(void)
 {
-    memset(console_output, 0, console_max_rows * console_max_cols * sizeof *console_output);
+    memset(console_output, 0, console_num_rows * console_num_cols * sizeof *console_output);
     text_cursor_x = 0;
     text_cursor_y = 0;
 
-    uint8_t *fb = fb_back ? fb_back : fb_front;
+    // TODO offer more efficient frame buffer interface for this
-    
+    struct color black = COLOR(0, 0, 0);
-    memset(fb, 0, bootboot.fb_height * bootboot.fb_scanline);
+    for (unsigned int y = 0; y < fb_height(); y++) {
-    fb_damage(0, 0, bootboot.fb_width, bootboot.fb_height);
+        for (unsigned int x = 0; x < fb_width(); x++) {
+            fb_set_px(x, y, black);
+        }
+    }
+    fb_damage(RECT(0, 0, fb_width(), fb_height()));
     fb_refresh();
 }
 
@@ -130,19 +104,19 @@ void visual_putc(char c)
 
     if (c == '\n') {
         text_cursor_y++;
-        if (text_cursor_y >= console_max_rows) {
+        if (text_cursor_y >= console_num_rows) {
-            //console_scroll();
+            console_scroll();
-            console_clear();
+            // console_clear();
         }
         return;
     }
 
     text_cursor_x++;
 
-    if (col >= console_max_cols) return;
+    if (col >= console_num_cols) return;
-    if (row >= console_max_rows) return;
+    if (row >= console_num_rows) return;
 
-    console_output[col + row * console_max_cols] = c;
+    console_output[row * console_num_cols + col] = c;
-    console_draw(col, row);
+    console_draw(row, col);
     fb_refresh();
 }

src/kernel.c

@@ -78,6 +78,14 @@ void _start() {
     fb_init();
     console_clear();
 
+    for (unsigned int y = 0; y < fb_height(); y++) {
+        fb_set_px(fb_width()/2, y, COLOR(255, 0, 0));
+    }
+    // fb_damage(RECT_XYWH(0, 0, fb_width(), fb_height()));
+    // fb_damage(RECT(0, 20, fb_width(), fb_height() - 20));
+    fb_damage(RECT_XYWH(fb_width()/2, 0, 1, fb_height()));
+    fb_refresh();
+
     printf("LAPIC ID: %d\n", cpu_get_core_id());
 
     __asm__("sti");

src/std.c

@@ -72,8 +72,8 @@ static unsigned int current_buffer_position = 0;
 static void linebuf_flush(void) {
     for (unsigned int i = 0; i < current_buffer_position; i++) {
         serial_write_char(linebuf[i]);
-        extern void visual_putc(char c);
+        // extern void visual_putc(char c);
-        visual_putc(linebuf[i]);
+        // visual_putc(linebuf[i]);
     }
     current_buffer_position = 0;
 }