source: mainline/uspace/drv/usbmouse/mouse.c@ 574f276

/*
 * Copyright (c) 2011 Vojtech Horky
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup drvusbmouse
 * @{
 */
/**
 * @file
 * Actual handling of USB mouse protocol.
 */
#include "mouse.h"
#include <usb/debug.h>
#include <errno.h>
#include <str_error.h>
#include <ipc/mouse.h>

/** Mouse polling callback.
 *
 * @param dev Device that is being polled.
 * @param buffer Data buffer.
 * @param buffer_size Buffer size in bytes.
 * @param arg Custom argument - points to usb_mouse_t.
 * @return Always true.
 */
bool usb_mouse_polling_callback(usb_device_t *dev,
    uint8_t *buffer, size_t buffer_size, void *arg)
{
        usb_mouse_t *mouse = (usb_mouse_t *) arg;

        usb_log_debug2("got buffer: %s.\n",
            usb_debug_str_buffer(buffer, buffer_size, 0));

        uint8_t butt = buffer[0];
        char str_buttons[4] = {
                butt & 1 ? '#' : '.',
                butt & 2 ? '#' : '.',
                butt & 4 ? '#' : '.',
                0
        };

        int shift_x = ((int) buffer[1]) - 127;
        int shift_y = ((int) buffer[2]) - 127;
        int wheel = ((int) buffer[3]) - 127;

        if (buffer[1] == 0) {
                shift_x = 0;
        }
        if (buffer[2] == 0) {
                shift_y = 0;
        }
        if (buffer[3] == 0) {
                wheel = 0;
        }

        if (mouse->console_phone >= 0) {
                if ((shift_x != 0) || (shift_y != 0)) {
                        /* FIXME: guessed for QEMU */
                        async_req_2_0(mouse->console_phone,
                            MEVENT_MOVE,
                            - shift_x / 10,  - shift_y / 10);
                }
                if (butt) {
                        /* FIXME: proper button clicking. */
                        async_req_2_0(mouse->console_phone,
                            MEVENT_BUTTON, 1, 1);
                        async_req_2_0(mouse->console_phone,
                            MEVENT_BUTTON, 1, 0);
                }
        }

        usb_log_debug("buttons=%s  dX=%+3d  dY=%+3d  wheel=%+3d\n",
            str_buttons, shift_x, shift_y, wheel);

        /* Guess. */
        async_usleep(1000);

        return true;
}

/** Callback when polling is terminated.
 *
 * @param dev Device where the polling terminated.
 * @param recurring_errors Whether the polling was terminated due to
 *      recurring errors.
 * @param arg Custom argument - points to usb_mouse_t.
 */
void usb_mouse_polling_ended_callback(usb_device_t *dev,
    bool recurring_errors, void *arg)
{
        usb_mouse_t *mouse = (usb_mouse_t *) arg;

        async_hangup(mouse->console_phone);
        mouse->console_phone = -1;
}

/**
 * @}
 */