| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 Sam Lantinga |
| 4 | |
| 5 | This library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | This library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with this library; if not, write to the Free Software |
| 17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | |
| 19 | Sam Lantinga |
| 20 | slouken@libsdl.org |
| 21 | */ |
| 22 | #include "SDL_config.h" |
| 23 | |
| 24 | #ifndef SDL_fbelo_h |
| 25 | #define SDL_fbelo_h |
| 26 | |
| 27 | #include "SDL_fbvideo.h" |
| 28 | |
| 29 | /* ELO */ |
| 30 | #define ELO_PACKET_SIZE 10 |
| 31 | #define ELO_START_BYTE 'U' |
| 32 | |
| 33 | /* eloConvertXY |
| 34 | Convert the raw coordinates from the ELO controller |
| 35 | to a screen position. |
| 36 | */ |
| 37 | void eloConvertXY(_THIS, int *dx, int *dy); |
| 38 | |
| 39 | /* eloInitController(int fd) |
| 40 | Initialize the ELO serial touchscreen controller |
| 41 | */ |
| 42 | int eloInitController(int fd); |
| 43 | |
| 44 | /* eloParsePacket |
| 45 | extract position and button state from a packet |
| 46 | */ |
| 47 | int eloParsePacket(unsigned char* mousebuf, int* dx, int* dy, int* button_state); |
| 48 | |
| 49 | /* eloReadPosition |
| 50 | read a packet and get the cursor position |
| 51 | */ |
| 52 | |
| 53 | int eloReadPosition(_THIS, int fd, int* x, int* y, int* button_state, int* realx, int* realy); |
| 54 | |
| 55 | #endif /* SDL_fbelo_h */ |