1 files changed, 150 insertions, 0 deletions
diff --git a/include/mtdev-plumbing.h b/include/mtdev-plumbing.h
new file mode 100644
index 0000000..21ca708
--- /dev/null
+++ b/include/mtdev-plumbing.h
@@ -0,0 +1,150 @@
+/*****************************************************************************
+ *
+ * mtdev - Multitouch Protocol Translation Library (MIT license)
+ *
+ * Copyright (C) 2010 Henrik Rydberg <rydberg@euromail.se>
+ * Copyright (C) 2010 Canonical Ltd.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ ****************************************************************************/
+
+#ifndef _MTDEV_PLUMBING_H
+#define _MTDEV_PLUMBING_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <mtdev.h>
+
+/**
+ * mtdev_new - allocate a new mtdev
+ *
+ * Allocate a new mtdev.
+ *
+ * Returns zero in case of memory allocation failure.
+ */
+struct mtdev *mtdev_new(void);
+
+/**
+ * mtdev_init - initialize mtdev converter
+ * @dev: the mtdev to initialize
+ *
+ * Sets up the internal data structures.
+ *
+ * Returns zero on success, negative error number otherwise.
+ */
+int mtdev_init(struct mtdev *dev);
+
+/**
+ * mtdev_set_mt_event - set event type
+ * @dev: the mtdev in use
+ * @code: the ABS_MT code to set
+ * @value: boolean value
+ *
+ * Returns true if the given event code is present.
+ */
+void mtdev_set_mt_event(struct mtdev *dev, int code, int value);
+
+/**
+ * mtdev_set_abs_<property> - set abs event property
+ * @dev: the mtdev in use
+ * @code: the ABS_MT code to set
+ */
+void mtdev_set_abs_minimum(struct mtdev *dev, int code, int value);
+void mtdev_set_abs_maximum(struct mtdev *dev, int code, int value);
+void mtdev_set_abs_fuzz(struct mtdev *dev, int code, int value);
+void mtdev_set_abs_resolution(struct mtdev *dev, int code, int value);
+
+/**
+ * mtdev_configure - configure the mtdev converter
+ * @dev: the mtdev to configure
+ * @fd: file descriptor of the kernel device
+ *
+ * Reads the device properties to set up the protocol capabilities.
+ * If preferred, this can be done by hand, omitting this call.
+ *
+ * Returns zero on success, negative error number otherwise.
+ */
+int mtdev_configure(struct mtdev *dev, int fd);
+
+/**
+ * mtdev_fetch_event - fetch an event from the kernel device
+ * @dev: the mtdev in use
+ * @fd: file descriptor of the kernel device
+ * @ev: the kernel input event to fill
+ *
+ * Fetch a kernel event from the kernel device. The read operation
+ * behaves as dictated by the file descriptor; if O_NONBLOCK is not
+ * set, the read will block until an event is available.
+ *
+ * On success, returns the number of events read (0 or 1). Otherwise,
+ * a standard negative error number is returned.
+ */
+int mtdev_fetch_event(struct mtdev *dev, int fd, struct input_event *ev);
+
+/**
+ * mtdev_put_event - put an event into the converter
+ * @dev: the mtdev in use
+ * @ev: the kernel input event to put
+ *
+ * Put a kernel event into the mtdev converter. The event should
+ * come straight from the device.
+ *
+ * This call does not block; if the buffer becomes full, older events
+ * are dropped. The buffer is guaranteed to handle several complete MT
+ * packets.
+ */
+void mtdev_put_event(struct mtdev *dev, const struct input_event *ev);
+
+/**
+ * mtdev_empty - check if there are events to get
+ * @dev: the mtdev in use
+ *
+ * Returns true if the processed event queue is empty, false otherwise.
+ */
+int mtdev_empty(struct mtdev *dev);
+
+/**
+ * mtdev_get_event - get processed events from mtdev
+ * @dev: the mtdev in use
+ * @ev: the input event to fill
+ *
+ * Get a processed event from mtdev. The events appear as if they came
+ * from a type B device emitting MT slot events.
+ *
+ * The queue must be non-empty before calling this function.
+ */
+void mtdev_get_event(struct mtdev *dev, struct input_event* ev);
+
+/**
+ * mtdev_delete - free a previously allocated mtdev
+ *
+ * Frees the memory associated with the mtdev and invalidates the
+ * mtdev pointer.
+ */
+void mtdev_delete(struct mtdev *dev);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif