mirror of https://github.com/ArduPilot/ardupilot
83 lines
2.4 KiB
C++
83 lines
2.4 KiB
C++
/*
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* This file is free software: you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This file is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <AP_OSD/AP_OSD_Backend.h>
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#include <AP_HAL/Util.h>
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#include <ctype.h>
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extern const AP_HAL::HAL& hal;
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#define SYM_DIG_OFS_1 0x90
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#define SYM_DIG_OFS_2 0xA0
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void AP_OSD_Backend::write(uint8_t x, uint8_t y, bool blink, const char *fmt, ...)
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{
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#if OSD_ENABLED
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if (blink && (blink_phase < 2)) {
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return;
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}
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char buff[32+1]; // +1 for snprintf null-termination
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va_list ap;
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va_start(ap, fmt);
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int res = hal.util->vsnprintf(buff, sizeof(buff), fmt, ap);
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res = MIN(res, int(sizeof(buff)));
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if (res > 0 && check_option(AP_OSD::OPTION_DECIMAL_PACK)) {
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// automatically use packed decimal characters
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// based on fiam idea implemented in inav osd
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char *p = strchr(&buff[1],'.');
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if (p && isdigit(p[1]) && isdigit(p[-1])) {
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p[-1] += SYM_DIG_OFS_1;
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p[1] += SYM_DIG_OFS_2;
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memmove(p, p+1, strlen(p+1)+1);
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res--;
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}
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}
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if (res < int(sizeof(buff))-1) {
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write(x, y, buff);
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}
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va_end(ap);
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#endif
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}
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/*
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load a font from sdcard or ROMFS
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*/
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FileData *AP_OSD_Backend::load_font_data(uint8_t font_num)
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{
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FileData *fd;
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// first try from microSD
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char fontname[] = "font0.bin";
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fontname[4] = font_num + '0';
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fd = AP::FS().load_file(fontname);
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if (fd == nullptr) {
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char fontname_romfs[] = "@ROMFS/font0.bin";
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fontname_romfs[7+4] = font_num + '0';
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fd = AP::FS().load_file(fontname_romfs);
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}
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if (fd == nullptr) {
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GCS_SEND_TEXT(MAV_SEVERITY_ERROR, "OSD: Failed to load font %u", font_num);
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if (font_num != 0) {
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// fallback to font0.bin. This allows us to reduce the
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// number of fonts we include in flash without breaking
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// user setups
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return load_font_data(0);
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}
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}
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return fd;
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}
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