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lxdream.org :: lxdream/src/maple/mouse.c
lxdream 0.9.1
released Jun 29
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filename src/maple/mouse.c
changeset 669:ab344e42bca9
prev634:b7d5592495e9
next736:a02d1475ccfd
author nkeynes
date Mon May 12 10:00:13 2008 +0000 (13 years ago)
permissions -rw-r--r--
last change Cleanup most of the -Wall warnings (getting a bit sloppy...)
Convert FP code to use fixed banks rather than indirect pointer
(3-4% faster this way now)
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     1 /**
     2  * $Id$
     3  *
     4  * Implementation of the standard mouse device
     5  *
     6  * Copyright (c) 2005 Nathan Keynes.
     7  *
     8  * This program is free software; you can redistribute it and/or modify
     9  * it under the terms of the GNU General Public License as published by
    10  * the Free Software Foundation; either version 2 of the License, or
    11  * (at your option) any later version.
    12  *
    13  * This program is distributed in the hope that it will be useful,
    14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    16  * GNU General Public License for more details.
    17  */
    18 #include <stdlib.h>
    19 #include <stdio.h>
    20 #include <string.h>
    21 #include "display.h"
    22 #include "maple/maple.h"
    24 #define MOUSE_IDENT     { 0x00, 0x00, 0x02, 0x00,  0x02, 0x00, 0x07, 0x00,  0x00, 0x00, 0x00, 0x00,\
    25  0x00, 0x00, 0x00, 0x00,  0xff, 0x00, 0x44, 0x72,  0x65, 0x61, 0x6d, 0x63,  0x61, 0x73, 0x74, 0x20,\
    26  0x4d, 0x6f, 0x75, 0x73,  0x65, 0x20, 0x20, 0x20,  0x20, 0x20, 0x20, 0x20,  0x20, 0x20, 0x20, 0x20,\
    27  0x20, 0x20, 0x20, 0x20,  0x50, 0x72, 0x6f, 0x64,  0x75, 0x63, 0x65, 0x64,  0x20, 0x42, 0x79, 0x20,\
    28  0x6f, 0x72, 0x20, 0x55,  0x6e, 0x64, 0x65, 0x72,  0x20, 0x4c, 0x69, 0x63,  0x65, 0x6e, 0x73, 0x65,\
    29  0x20, 0x46, 0x72, 0x6f,  0x6d, 0x20, 0x53, 0x45,  0x47, 0x41, 0x20, 0x45,  0x4e, 0x54, 0x45, 0x52,\
    30  0x50, 0x52, 0x49, 0x53,  0x45, 0x53, 0x2c, 0x4c,  0x54, 0x44, 0x2e, 0x20,  0x20, 0x20, 0x20, 0x20,\
    31  0x90, 0x01, 0xf4, 0x01 }
    32 #define MOUSE_VERSION   { 0x56, 0x65, 0x72, 0x73,  0x69, 0x6f, 0x6e, 0x20,  0x31, 0x2e, 0x30, 0x30,\
    33  0x30, 0x2c, 0x32, 0x30,  0x30, 0x30, 0x2f, 0x30,  0x32, 0x2f, 0x32, 0x35,  0x2c, 0x33, 0x31, 0x35,\
    34  0x2d, 0x36, 0x32, 0x31,  0x31, 0x2d, 0x41, 0x54,  0x20, 0x20, 0x20, 0x2c,  0x33, 0x20, 0x42, 0x75,\
    35  0x74, 0x74, 0x6f, 0x6e,  0x20, 0x26, 0x20, 0x58,  0x2d, 0x59, 0x20, 0x42,  0x61, 0x6c, 0x6c, 0x20,\
    36  0x26, 0x20, 0x5a, 0x20,  0x57, 0x68, 0x65, 0x65,  0x6c, 0x20, 0x2c, 0x34,  0x30, 0x30, 0x64, 0x70,\
    37  0x69, 0x20, 0x20, 0x20 }
    39 #define BUTTON_MIDDLE 0x01
    40 #define BUTTON_RIGHT  0x02
    41 #define BUTTON_LEFT   0x04
    42 #define BUTTON_THUMB  0x08
    44 void mouse_attach( maple_device_t dev );
    45 void mouse_detach( maple_device_t dev );
    46 maple_device_t mouse_clone( maple_device_t dev );
    47 maple_device_t mouse_new();
    48 int mouse_get_cond( maple_device_t dev, int function, unsigned char *outbuf,
    49                          unsigned int *outlen );
    51 typedef struct mouse_device {
    52     struct maple_device dev;
    53     uint32_t buttons;
    54     int32_t axis[8];
    55 } *mouse_device_t; 
    57 struct maple_device_class mouse_class = { "Sega Mouse", mouse_new };
    59 static struct mouse_device base_mouse = {
    60     { MAPLE_DEVICE_TAG, &mouse_class, MOUSE_IDENT, MOUSE_VERSION, 
    61       NULL, mouse_attach, mouse_detach, maple_default_destroy,
    62       mouse_clone, NULL, NULL, mouse_get_cond, NULL, NULL, NULL },
    63     0, {0,0,0,0,0,0,0,0}, 
    64 };
    66 static int32_t mouse_axis_scale_factors[8] = { 10, 10, 1, 1, 1, 1, 1, 1 };
    68 #define MOUSE(x) ((mouse_device_t)(x))
    70 maple_device_t mouse_new( )
    71 {
    72     mouse_device_t dev = malloc( sizeof(struct mouse_device) );
    73     memcpy( dev, &base_mouse, sizeof(base_mouse) );
    74     return MAPLE_DEVICE(dev);
    75 }
    77 maple_device_t mouse_clone( maple_device_t srcdevice )
    78 {
    79     mouse_device_t src = (mouse_device_t)srcdevice;
    80     mouse_device_t dev = (mouse_device_t)mouse_new();
    81     dev->buttons = src->buttons;
    82     memcpy( dev->axis, src->axis, sizeof(src->axis) );
    83     return MAPLE_DEVICE(dev);
    84 }
    86 void mouse_input_callback( void *mdev, uint32_t buttons, int32_t x, int32_t y )
    87 {
    88     mouse_device_t dev = (mouse_device_t)mdev;
    89     dev->buttons = 0xFF;
    90     if( buttons & 0x01 ) {
    91 	dev->buttons &= ~BUTTON_LEFT;
    92     }
    93     if( buttons & 0x02 ) {
    94 	dev->buttons &= ~BUTTON_MIDDLE;
    95     } 
    96     if( buttons & 0x04 ) {
    97 	dev->buttons &= ~BUTTON_RIGHT;
    98     }
    99     if( buttons & 0x08 ) {
   100 	dev->buttons &= ~BUTTON_THUMB;
   101     }
   102     dev->axis[0] += x;
   103     dev->axis[1] += y;
   104 }
   106 void mouse_attach( maple_device_t dev )
   107 {
   108     input_register_mouse_hook( TRUE, mouse_input_callback, dev );
   109 }
   111 void mouse_detach( maple_device_t dev )
   112 {
   113     input_unregister_mouse_hook( mouse_input_callback, dev );
   114 }
   116 int mouse_get_cond( maple_device_t mdev, int function, unsigned char *outbuf,
   117 		       unsigned int *outlen )
   118 {
   119     mouse_device_t dev = (mouse_device_t)mdev;
   120     if( function == MAPLE_FUNC_MOUSE ) {
   121         *outlen = 5;
   122 	*(uint32_t *)outbuf = dev->buttons;
   123 	uint16_t *p = (uint16_t *)(outbuf+4);
   124 	int i;
   125 	// Axis values are in the range 0..0x3FF, where 0x200 is zero movement
   126 	for( i=0; i<8; i++ ) {
   127 	    int32_t value = dev->axis[i] / mouse_axis_scale_factors[i];
   128 	    if( value < -0x200 ) {
   129 		p[i] = 0;
   130 	    } else if( value > 0x1FF ) {
   131 		p[i] = 0x3FF;
   132 	    } else {
   133 		p[i] = 0x200 + value;
   134 	    }
   135 	    dev->axis[i] = 0; // clear after returning.
   136 	}
   137         return 0;
   138     } else {
   139         return MAPLE_ERR_FUNC_UNSUP;
   140     }
   141 }
.