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- /*
- * (c) Philippe G. 2019, philippe_44@outlook.com
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
- */
- #pragma once
- #include "gds.h"
- /*
- The displayer is not thread-safe and the caller must ensure use its own
- mutexes if it wants something better. Especially, text() line() and draw()
- are not protected against each other.
- In text mode (text/line) when using DISPLAY_SUSPEND, the displayer will
- refreshed line 2 one last time before suspending itself. As a result if it
- is in a long sleep (scrolling pause), the refresh will happen after wakeup.
- So it can conflict with other display direct writes that have been made during
- sleep. Note that if DISPLAY_SHUTDOWN has been called meanwhile, it (almost)
- never happens
- The display_bus() shall be subscribed by other displayers so that at least
- when this one (the main) wants to take control over display, it can signal
- that to others
- */
- extern struct GDS_Device *display;
-
- enum displayer_cmd_e { DISPLAYER_SHUTDOWN, DISPLAYER_ACTIVATE, DISPLAYER_SUSPEND, DISPLAYER_TIMER_PAUSE, DISPLAYER_TIMER_RUN };
- enum displayer_time_e { DISPLAYER_ELAPSED, DISPLAYER_REMAINING };
- enum display_bus_cmd_e { DISPLAY_BUS_TAKE, DISPLAY_BUS_GIVE };
- bool (*display_bus)(void *from, enum display_bus_cmd_e cmd);
- char * display_conf_get_driver_name(char * driver);
- bool display_is_valid_driver(char * driver);
- void displayer_scroll(char *string, int speed, int pause);
- void displayer_control(enum displayer_cmd_e cmd, ...);
- void displayer_metadata(char *artist, char *album, char *title);
- void displayer_timer(enum displayer_time_e mode, int elapsed, int duration);
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