e7fd9688ea
Prepare support to be able to handle font data in loader, consolidate data structures to sys/font.h and update vtfontcvt. vtfontcvt update is about to output set of glyphs in form of C source, the implementation does allow to output compressed or uncompressed font bitmaps. Reviewed by: bcr Differential Revision: https://reviews.freebsd.org/D24189
113 lines
3.5 KiB
C
113 lines
3.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2009, 2013 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Ed Schouten under sponsorship from the
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* FreeBSD Foundation.
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*
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* Portions of this software were developed by Oleksandr Rybalko
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* under sponsorship from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SYS_FONT_H_
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#define _SYS_FONT_H_
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#include <sys/queue.h>
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/*
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* Fonts.
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*
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* Remapping tables are used to map Unicode points to glyphs. They need
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* to be sorted, because vtfont_lookup() performs a binary search. Each
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* font has two remapping tables, for normal and bold. When a character
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* is not present in bold, it uses a normal glyph. When no glyph is
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* available, it uses glyph 0, which is normally equal to U+FFFD.
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*/
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enum vfnt_map_type {
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VFNT_MAP_NORMAL = 0, /* Normal font. */
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VFNT_MAP_NORMAL_RIGHT, /* Normal font right hand. */
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VFNT_MAP_BOLD, /* Bold font. */
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VFNT_MAP_BOLD_RIGHT, /* Bold font right hand. */
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VFNT_MAPS /* Number of maps. */
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};
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struct vfnt_map {
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uint32_t vfm_src;
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uint16_t vfm_dst;
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uint16_t vfm_len;
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} __packed;
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typedef struct vfnt_map vfnt_map_t;
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struct vt_font {
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vfnt_map_t *vf_map[VFNT_MAPS];
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uint8_t *vf_bytes;
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uint32_t vf_height;
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uint32_t vf_width;
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uint32_t vf_map_count[VFNT_MAPS];
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uint32_t vf_refcount;
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};
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typedef struct vt_font_bitmap_data {
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uint32_t vfbd_width;
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uint32_t vfbd_height;
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uint32_t vfbd_compressed_size;
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uint32_t vfbd_uncompressed_size;
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uint8_t *vfbd_compressed_data;
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struct vt_font *vfbd_font;
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} vt_font_bitmap_data_t;
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typedef enum {
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FONT_AUTO,
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FONT_MANUAL,
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FONT_BOOT
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} FONT_FLAGS;
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struct fontlist {
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char *font_name;
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FONT_FLAGS font_flags;
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vt_font_bitmap_data_t *font_data;
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vt_font_bitmap_data_t *(*font_load)(char *);
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STAILQ_ENTRY(fontlist) font_next;
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};
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#define BORDER_PIXELS 10 /* space from screen border */
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typedef STAILQ_HEAD(font_list, fontlist) font_list_t;
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#define FONT_HEADER_MAGIC "VFNT0002"
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struct font_header {
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uint8_t fh_magic[8];
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uint8_t fh_width;
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uint8_t fh_height;
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uint16_t fh_pad;
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uint32_t fh_glyph_count;
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uint32_t fh_map_count[VFNT_MAPS];
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} __packed;
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#endif /* !_SYS_FONT_H_ */
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