1 files changed, 100 insertions, 0 deletions

diff --git a/include/grail-touch.h b/include/grail-touch.h
new file mode 100644
index 0000000..d6c9bf5
--- /dev/null
+++ b/include/grail-touch.h
@@ -0,0 +1,100 @@
+/*****************************************************************************
+ *
+ * grail - Gesture Recognition And Instantiation Library
+ *
+ * Copyright (C) 2010 Canonical Ltd.
+ *
+ * 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/>.
+ *
+ * Authors:
+ *      Henrik Rydberg <rydberg@bitmath.org>
+ *
+ ****************************************************************************/
+
+#ifndef _GRAIL_TOUCH_H
+#define _GRAIL_TOUCH_H
+
+#include <mtdev.h>
+
+#define DIM_TOUCHES 32
+
+typedef int touch_prop_t;
+typedef unsigned touch_prop_mask_t;
+typedef __u64 touch_time_t;
+
+enum touch_prop_list {
+        TP_POS_X,
+        TP_POS_Y,
+        TP_TOUCH_MAJOR,
+        TP_TOUCH_MINOR,
+        TP_WIDTH_MAJOR,
+        TP_WIDTH_MINOR,
+        TP_ORIENTATION,
+        TP_PRESSURE,
+        DIM_TOUCH_PROP
+};
+
+struct touch {
+        int active;
+        int slot;
+        int next;
+        touch_prop_t prop[DIM_TOUCH_PROP];
+};
+
+struct touch_dev {
+        void (*event)(struct touch_dev *dev, const struct input_event *ev);
+        void (*create)(struct touch_dev *dev, int slot,
+                       const touch_prop_mask_t *mask, const touch_prop_t *prop);
+        void (*modify)(struct touch_dev *dev, int slot,
+                       const touch_prop_mask_t *mask, const touch_prop_t *prop);
+        void (*destroy)(struct touch_dev *dev, int slot);
+        void (*sync)(struct touch_dev *dev, touch_time_t time);
+        struct touch_dev_impl *impl;
+        void *priv;
+};
+
+struct touch_frame {
+        int ntouch;
+        int slot;
+        struct touch touch[DIM_TOUCHES];
+};
+
+struct touch_engine {
+        void (*sync)(struct touch_engine *engine, touch_time_t time);
+        struct touch_frame frame;
+        void *priv;
+};
+
+static inline int has_prop(const touch_prop_mask_t *mask, int code)
+{
+        return (mask[code >> 5] >> (code & 31)) & 1;
+}
+
+static inline int next_slot(const struct touch_frame *frame, int slot)
+{
+        return frame->touch[slot].next;
+}
+
+int touch_dev_open(struct touch_dev *dev, int fd);
+int touch_dev_idle(struct touch_dev *dev, int fd, int ms);
+int touch_dev_pull(struct touch_dev *dev, int fd);
+void touch_dev_close(struct touch_dev *dev, int fd);
+
+void touch_engine_init(struct touch_engine *engine,
+                       void (*sync)(struct touch_engine *engine,
+                                    touch_time_t time),
+                       void *priv);
+void touch_engine_attach(struct touch_engine *engine, struct touch_dev *dev);
+
+#endif