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#ifndef MYON_FMDSP_FONT_H_INCLUDED
#define MYON_FMDSP_FONT_H_INCLUDED
#include <stdint.h>
#include <stdbool.h>
#ifdef __cplusplus
extern "C" {
#endif
static inline bool sjis_is_mb_start(uint8_t c) {
if (0x81 <= c && c <= 0x9f) return true;
if (0xe0 <= c && c <= 0xef) return true;
return false;
}
static inline bool jis_is_halfwidth(uint16_t jis) {
uint8_t row = jis >> 8;
return row == 0x29 || row == 0x2a;
}
static inline uint16_t sjis2jis(uint8_t sjis_1st, uint8_t sjis_2nd) {
uint16_t jis;
if (sjis_1st >= 0xe0) sjis_1st -= 0x40;
sjis_1st -= 0x81;
jis = sjis_1st << 9;
if (sjis_2nd >= 0x80) sjis_2nd--;
if (sjis_2nd >= 0x9e) {
jis |= 0x100 | (sjis_2nd - 0x9e);
} else {
jis |= (sjis_2nd - 0x40);
}
jis += 0x2121;
return jis;
}
static inline uint16_t jis2sjis(uint16_t jis) {
jis += 0x217e;
jis ^= 0x4000;
bool c = jis&0x100;
jis = (jis & 0xff) | (((jis>>1)|0x8000)&0xff00);
if (!c) {
uint16_t jisl = jis & 0xff;
jisl -= 0xde;
if (jisl >> 8) jisl--;
jisl -= 0x80;
jis = (jis&0xff00) | (jisl&0xff);
}
return jis;
}
enum fmdsp_font_type {
FMDSP_FONT_ANK,
FMDSP_FONT_JIS_LEFT,
FMDSP_FONT_JIS_RIGHT
};
struct fmdsp_font {
const void *(* get)(const struct fmdsp_font *font,
uint16_t addr, enum fmdsp_font_type type);
const void *data;
uint8_t width_half;
uint8_t height;
};
enum {
FONT_ROM_FILESIZE = 0x46800
};
void fmdsp_font_from_font_rom(struct fmdsp_font *font, const void *data);
extern const struct fmdsp_font font_fmdsp_small;
extern const struct fmdsp_font font_fmdsp_medium;
#ifdef __cplusplus
}
#endif
#endif // MYON_FMDSP_FONT_H_INCLUDED
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