Integrate flaterm terminal

kernel/flanterm/src/flanterm_backends/fb.h

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+/* Copyright (C) 2022-2025 mintsuki and contributors.
+ *
+ * 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.
+ *
+ * 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 HOLDER 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.
+ */
+
+#ifndef FLANTERM_FB_H
+#define FLANTERM_FB_H 1
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "../flanterm.h"
+
+#ifdef FLANTERM_IN_FLANTERM
+
+#include "fb_private.h"
+
+#endif
+
+struct flanterm_context *flanterm_fb_init(
+    /* If _malloc and _free are nulled, use the bump allocated instance (1 use only). */
+    void *(*_malloc)(size_t size),
+    void (*_free)(void *ptr, size_t size),
+    uint32_t *framebuffer, size_t width, size_t height, size_t pitch,
+    uint8_t red_mask_size, uint8_t red_mask_shift,
+    uint8_t green_mask_size, uint8_t green_mask_shift,
+    uint8_t blue_mask_size, uint8_t blue_mask_shift,
+    uint32_t *canvas, /* If nulled, no canvas. */
+    uint32_t *ansi_colours, uint32_t *ansi_bright_colours, /* If nulled, default. */
+    uint32_t *default_bg, uint32_t *default_fg, /* If nulled, default. */
+    uint32_t *default_bg_bright, uint32_t *default_fg_bright, /* If nulled, default. */
+    /* If font is null, use default font and font_width and font_height ignored. */
+    void *font, size_t font_width, size_t font_height, size_t font_spacing,
+    /* If scale_x and scale_y are 0, automatically scale font based on resolution. */
+    size_t font_scale_x, size_t font_scale_y,
+    size_t margin
+);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

kernel/flanterm/src/flanterm_backends/fb_private.h

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+/* Copyright (C) 2022-2025 mintsuki and contributors.
+ *
+ * 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.
+ *
+ * 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 HOLDER 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.
+ */
+
+#ifndef FLANTERM_FB_PRIVATE_H
+#define FLANTERM_FB_PRIVATE_H 1
+
+#ifndef FLANTERM_IN_FLANTERM
+#error "Do not use fb_private.h. Use interfaces defined in fb.h only."
+#endif
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define FLANTERM_FB_FONT_GLYPHS 256
+
+struct flanterm_fb_char {
+    uint32_t c;
+    uint32_t fg;
+    uint32_t bg;
+};
+
+struct flanterm_fb_queue_item {
+    size_t x, y;
+    struct flanterm_fb_char c;
+};
+
+struct flanterm_fb_context {
+    struct flanterm_context term;
+
+    void (*plot_char)(struct flanterm_context *ctx, struct flanterm_fb_char *c, size_t x, size_t y);
+
+    size_t font_width;
+    size_t font_height;
+    size_t glyph_width;
+    size_t glyph_height;
+
+    size_t font_scale_x;
+    size_t font_scale_y;
+
+    size_t offset_x, offset_y;
+
+    volatile uint32_t *framebuffer;
+    size_t pitch;
+    size_t width;
+    size_t height;
+    size_t bpp;
+
+    uint8_t red_mask_size, red_mask_shift;
+    uint8_t green_mask_size, green_mask_shift;
+    uint8_t blue_mask_size, blue_mask_shift;
+
+    size_t font_bits_size;
+    uint8_t *font_bits;
+    size_t font_bool_size;
+    bool *font_bool;
+
+    uint32_t ansi_colours[8];
+    uint32_t ansi_bright_colours[8];
+    uint32_t default_fg, default_bg;
+    uint32_t default_fg_bright, default_bg_bright;
+
+    size_t canvas_size;
+    uint32_t *canvas;
+
+    size_t grid_size;
+    size_t queue_size;
+    size_t map_size;
+
+    struct flanterm_fb_char *grid;
+
+    struct flanterm_fb_queue_item *queue;
+    size_t queue_i;
+
+    struct flanterm_fb_queue_item **map;
+
+    uint32_t text_fg;
+    uint32_t text_bg;
+    size_t cursor_x;
+    size_t cursor_y;
+
+    uint32_t saved_state_text_fg;
+    uint32_t saved_state_text_bg;
+    size_t saved_state_cursor_x;
+    size_t saved_state_cursor_y;
+
+    size_t old_cursor_x;
+    size_t old_cursor_y;
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif