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