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Diffstat (limited to 'include/memory.h')
| -rw-r--r-- | include/memory.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/include/memory.h b/include/memory.h new file mode 100644 index 0000000..8ffbdab --- /dev/null +++ b/include/memory.h @@ -0,0 +1,73 @@ +/*************************************************************************** + * + * Multitouch X driver + * Copyright (C) 2008 Henrik Rydberg <rydberg@euromail.se> + * + * 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 2 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, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + **************************************************************************/ + +#ifndef MEMORY_H +#define MEMORY_H + +#include "mtstate.h" + +/** + * struct Memory - parsing state + * + * @btdata: logical finger state + * @same: true if the finger configuration is unchanged + * @fingers: bitmask of fingers on the pad + * @added: bitmask of new fingers on the pad + * @thumb: bitmask of thumbs on the pad + * @pointing: bitmask of pointing fingers + * @pending: bitmask of tentatively moving fingers + * @moving: bitmask of moving fingers + * @ybar: vertical position on pad marking the clicking area + * @mvhold: movement before this point in time is accumulated + * @mvforget: movement before this point in time is discarded + * @dx: array of accumulated horiontal movement per finger + * @dy: array of accumulated vertical movement per finger + * + */ +struct Memory { + unsigned btdata, same; + unsigned fingers, added, thumb; + unsigned pointing, pending, moving; + int ybar; + mstime_t mvhold, mvforget; + int dx[DIM_FINGER], dy[DIM_FINGER]; +}; + +void init_memory(struct Memory *mem); +void refresh_memory(struct Memory *m, + const struct MTState *prev_state, + const struct MTState *state, + const struct Capabilities *caps); +void output_memory(const struct Memory *m); + +static inline void mem_hold_movement(struct Memory *m, mstime_t t) +{ + if (t > m->mvhold) + m->mvhold = t; +} + +static inline void mem_forget_movement(struct Memory *m, mstime_t t) +{ + if (t > m->mvforget) + m->mvforget = t; +} + +#endif |