| /***************************************************************************** |
| * |
| * 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_H |
| #define _MTDEV_H |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #include <linux/input.h> |
| |
| /* includes available in 2.6.30-rc5 */ |
| #ifndef BTN_TOOL_QUADTAP |
| #define BTN_TOOL_QUADTAP 0x14f /* Four fingers on trackpad */ |
| #define ABS_MT_TOUCH_MAJOR 0x30 /* Major axis of touching ellipse */ |
| #define ABS_MT_TOUCH_MINOR 0x31 /* Minor axis (omit if circular) */ |
| #define ABS_MT_WIDTH_MAJOR 0x32 /* Major axis of approaching ellipse */ |
| #define ABS_MT_WIDTH_MINOR 0x33 /* Minor axis (omit if circular) */ |
| #define ABS_MT_ORIENTATION 0x34 /* Ellipse orientation */ |
| #define ABS_MT_POSITION_X 0x35 /* Center X ellipse position */ |
| #define ABS_MT_POSITION_Y 0x36 /* Center Y ellipse position */ |
| #define ABS_MT_TOOL_TYPE 0x37 /* Type of touching device */ |
| #define ABS_MT_BLOB_ID 0x38 /* Group a set of packets as a blob */ |
| #define ABS_MT_TRACKING_ID 0x39 /* Unique ID of initiated contact */ |
| #define SYN_MT_REPORT 2 |
| #define MT_TOOL_FINGER 0 |
| #define MT_TOOL_PEN 1 |
| #endif |
| |
| /* includes available in 2.6.33 */ |
| #ifndef ABS_MT_PRESSURE |
| #define ABS_MT_PRESSURE 0x3a /* Pressure on contact area */ |
| #endif |
| |
| /* includes available in 2.6.36 */ |
| #ifndef ABS_MT_SLOT |
| #define ABS_MT_SLOT 0x2f /* MT slot being modified */ |
| #endif |
| |
| /* includes available in 2.6.38 */ |
| #ifndef ABS_MT_DISTANCE |
| #define ABS_MT_DISTANCE 0x3b /* Contact hover distance */ |
| #endif |
| |
| #define MT_ID_NULL (-1) |
| #define MT_ID_MIN 0 |
| #define MT_ID_MAX 65535 |
| |
| /** |
| * mtdev_new_open - create and open a new mtdev |
| * @fd: file descriptor of the kernel device |
| * |
| * Create a new mtdev and open the conversion. |
| * |
| * Returns zero in case of failure. |
| * |
| * This call combines the plumbing functions mtdev_new() and |
| * mtdev_open(). |
| */ |
| struct mtdev *mtdev_new_open(int fd); |
| |
| /** |
| * mtdev_open - open an mtdev converter |
| * @dev: the mtdev to open |
| * @fd: file descriptor of the kernel device |
| * |
| * Initialize the mtdev structure and configure it by reading |
| * the protocol capabilities through the file descriptor. |
| * |
| * Returns zero on success, negative error number otherwise. |
| * |
| * This call combines the plumbing functions mtdev_init() and |
| * mtdev_configure(). |
| */ |
| int mtdev_open(struct mtdev *dev, int fd); |
| |
| /** |
| * mtdev_has_mt_event - check for event type |
| * @dev: the mtdev in use |
| * @code: the ABS_MT code to look for |
| * |
| * Returns true if the given event code is present. |
| */ |
| int mtdev_has_mt_event(const struct mtdev *dev, int code); |
| |
| /** |
| * mtdev_get_abs_<property> - get abs event property |
| * @dev: the mtdev in use |
| * @code: the ABS_MT code to look for |
| * |
| * Returns NULL if code is not a valid ABS_MT code. |
| */ |
| int mtdev_get_abs_minimum(const struct mtdev *dev, int code); |
| int mtdev_get_abs_maximum(const struct mtdev *dev, int code); |
| int mtdev_get_abs_fuzz(const struct mtdev *dev, int code); |
| int mtdev_get_abs_resolution(const struct mtdev *dev, int code); |
| |
| /** |
| * mtdev_idle - check state of kernel device |
| * @dev: the mtdev in use |
| * @fd: file descriptor of the kernel device |
| * @ms: number of milliseconds to wait for activity |
| * |
| * Returns true if the device is idle, i.e., there are no fetched |
| * events in the pipe and there is nothing to fetch from the device. |
| */ |
| int mtdev_idle(struct mtdev *dev, int fd, int ms); |
| |
| /** |
| * mtdev_get - get processed events from mtdev |
| * @dev: the mtdev in use |
| * @fd: file descriptor of the kernel device |
| * @ev: array of input events to fill |
| * @ev_max: maximum number of events to read |
| * |
| * Get a processed event from mtdev. The events appear as if they came |
| * from a type B device emitting MT slot events. |
| * |
| * The read operations involved behave as dictated by the file |
| * descriptor; if O_NONBLOCK is not set, mtdev_get() will block until |
| * the specified number of processed events are available. |
| * |
| * On success, returns the number of events read. Otherwise, |
| * a standard negative error number is returned. |
| * |
| * This call combines the plumbing functions mtdev_fetch_event(), |
| * mtdev_put_event() and mtdev_get_event(). |
| */ |
| int mtdev_get(struct mtdev *dev, int fd, struct input_event* ev, int ev_max); |
| |
| /** |
| * mtdev_close - close the mtdev converter |
| * @dev: the mtdev to close |
| * |
| * Deallocates all memory associated with mtdev, and clears the mtdev |
| * structure. |
| */ |
| void mtdev_close(struct mtdev *dev); |
| |
| /** |
| * mtdev_close_delete - close conversion and delete mtdev |
| * @dev: the mtdev in use |
| * |
| * Flush pending buffers and deallocate all memory associated with |
| * mtdev. The device pointer is invalidated. This call combines the |
| * plumbing functions mtdev_close() and mtdev_delete(). |
| */ |
| void mtdev_close_delete(struct mtdev *dev); |
| |
| #ifndef MTDEV_NO_LEGACY_API |
| |
| #define MT_ABS_SIZE 11 |
| #ifndef MT_SLOT_ABS_EVENTS |
| #define MT_SLOT_ABS_EVENTS { \ |
| ABS_MT_TOUCH_MAJOR, \ |
| ABS_MT_TOUCH_MINOR, \ |
| ABS_MT_WIDTH_MAJOR, \ |
| ABS_MT_WIDTH_MINOR, \ |
| ABS_MT_ORIENTATION, \ |
| ABS_MT_POSITION_X, \ |
| ABS_MT_POSITION_Y, \ |
| ABS_MT_TOOL_TYPE, \ |
| ABS_MT_BLOB_ID, \ |
| ABS_MT_TRACKING_ID, \ |
| ABS_MT_PRESSURE, \ |
| } |
| #endif |
| |
| struct mtdev_caps { |
| int has_mtdata; |
| int has_slot; |
| int has_abs[MT_ABS_SIZE]; |
| struct input_absinfo slot; |
| struct input_absinfo abs[MT_ABS_SIZE]; |
| }; |
| |
| struct mtdev { |
| struct mtdev_caps caps; |
| struct mtdev_state *state; |
| }; |
| |
| #endif |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif |