From 3f365ef507d2cf16ddef435b96f690bb454253b5 Mon Sep 17 00:00:00 2001 From: Hans-Christoph Steiner Date: Tue, 22 Apr 2003 05:04:49 +0000 Subject: changed the name from raw to linux, since they are linux-specific; put common stuff in linuxhid.h svn path=/trunk/externals/hcs/; revision=583 --- linuxmouse.c | 331 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 331 insertions(+) create mode 100644 linuxmouse.c (limited to 'linuxmouse.c') diff --git a/linuxmouse.c b/linuxmouse.c new file mode 100644 index 0000000..913d35b --- /dev/null +++ b/linuxmouse.c @@ -0,0 +1,331 @@ + +#include + +#ifdef NT +#pragma warning( disable : 4244 ) +#pragma warning( disable : 4305 ) +#endif + + +#include + +#include + +#include +#include +#include +#include +#include +#include +#include + +#include "linuxhid.h" + +#define DEBUG(x) +/*#define DEBUG(x) x */ + + +#define LINUXMOUSE_DEVICE "/dev/input/event0" + +#define LINUXMOUSE_AXES 3 +#define LINUXMOUSE_BUTTONS 7 + + +/*------------------------------------------------------------------------------ + * CLASS DEF + */ +static t_class *linuxmouse_class; + +typedef struct _linuxmouse { + t_object x_obj; + t_int x_fd; + t_symbol* x_devname; + int read_ok; + int started; + struct input_event x_input_event; + t_outlet *x_axis_out[LINUXMOUSE_AXES]; + t_outlet *x_button_num_out; + t_outlet *x_button_val_out; + t_clock *x_clock; + double x_delaytime; + unsigned char x_buttons; + unsigned char x_axes; +}t_linuxmouse; + +/*------------------------------------------------------------------------------ + * IMPLEMENTATION + */ + +//DONE +static int linuxmouse_close(t_linuxmouse *x) +{ + DEBUG(post("linuxmouse_close");) + + if (x->x_fd <0) return 0; + + close (x->x_fd); + + return 1; +} + +//DONE +static int linuxmouse_open(t_linuxmouse *x,t_symbol* s) +{ + int eventType, eventCode; + unsigned long bitmask[EV_MAX][NBITS(KEY_MAX)]; + char devicename[256] = "Unknown"; + DEBUG(post("linuxmouse_open");) + + linuxmouse_close(x); + + /* set obj device name to parameter + * otherwise set to default + */ + if (s != &s_) + x->x_devname = s; + else { + post("You need to set a input device (i.e /dev/input/event0)"); + } + + /* open device */ + if (x->x_devname) { + post("opening ..."); + /* open the linuxmouse device read-only, non-exclusive */ + x->x_fd = open (x->x_devname->s_name, O_RDONLY | O_NONBLOCK); + if (x->x_fd >= 0 ) post("done"); + else post("failed"); + } + else { + return 1; + } + + /* test if device open */ + if (x->x_fd >= 0) + post("%s opened",x->x_devname->s_name); + else { + post("unable to open %s",x->x_devname->s_name); + x->x_fd = -1; + return 0; + } + + /* read input_events from the LINUXMOUSE_DEVICE stream + * It seems that is just there to flush the event input buffer? + */ + while (read (x->x_fd, &(x->x_input_event), sizeof(struct input_event)) > -1); + + /* get name of device */ + ioctl(x->x_fd, EVIOCGNAME(sizeof(devicename)), devicename); + post ("configuring %s",devicename); + + /* get bitmask representing supported events (axes, buttons, etc.) */ + memset(bitmask, 0, sizeof(bitmask)); + ioctl(x->x_fd, EVIOCGBIT(0, EV_MAX), bitmask[0]); + post("Supported events:"); + + x->x_axes = 0; + x->x_buttons = 0; + + /* cycle through all possible event types */ + for (eventType = 0; eventType < EV_MAX; eventType++) { + if (test_bit(eventType, bitmask[0])) { + post(" %s (type %d) ", events[eventType] ? events[eventType] : "?", eventType); + // post("Event type %d",eventType); + + /* get bitmask representing supported button types */ + ioctl(x->x_fd, EVIOCGBIT(eventType, KEY_MAX), bitmask[eventType]); + + /* cycle through all possible event codes (axes, keys, etc.) + * testing to see which are supported + */ + for (eventCode = 0; eventCode < KEY_MAX; eventCode++) + if (test_bit(eventCode, bitmask[eventType])) { + post(" Event code %d (%s)", eventCode, names[eventType] ? (names[eventType][eventCode] ? names[eventType][eventCode] : "?") : "?"); + + if ( eventType == EV_KEY ) + x->x_buttons++; + else if ( eventType == EV_REL ) + x->x_axes++; + } + } + } + + post ("\nUsing %d axes and %d buttons.", x->x_axes, x->x_buttons); + post ("WARNING * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING"); + post ("This object is under development! The interface could change at anytime!"); + post ("As I write cross-platform versions, the interface might have to change."); + post ("WARNING * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING"); + + return 1; +} + + + +static int linuxmouse_read(t_linuxmouse *x,int fd) +{ + int readBytes; + int axis_num = 0; + t_float button_num = 0; + + if (x->x_fd < 0) return 0; + if (x->read_ok) { + readBytes = read(x->x_fd, &(x->x_input_event), sizeof(struct input_event)); + DEBUG(post("reading %d",readBytes);) + if ( readBytes < 0 ) { + post("linuxmouse: read failed"); + x->read_ok = 0; + return 0; + } + } + if ( x->x_input_event.type == EV_KEY ) { + /* key/button event type */ + switch ( x->x_input_event.code ) { + case BTN_LEFT: + button_num = 0; + break; + case BTN_RIGHT: + button_num = 1; + break; + case BTN_MIDDLE: + button_num = 2; + break; + case BTN_SIDE: + button_num = 3; + break; + case BTN_EXTRA: + button_num = 4; + break; + case BTN_FORWARD: + button_num = 5; + break; + case BTN_BACK: + button_num = 6; + break; + } + outlet_float (x->x_button_val_out, x->x_input_event.value); + outlet_float (x->x_button_num_out, button_num); + } + else if ( x->x_input_event.type == EV_REL ) { + /* Relative Axes Event Type */ + switch ( x->x_input_event.code ) { + case REL_X: + axis_num = 0; + break; + case REL_Y: + axis_num = 1; + break; + case REL_WHEEL: + axis_num = 2; + break; + } + outlet_float (x->x_axis_out[axis_num], (int)x->x_input_event.value); + } + + return 1; +} + + + +/* Actions */ + +static void linuxmouse_bang(t_linuxmouse* x) +{ + DEBUG(post("linuxmouse_bang");) + +} + +static void linuxmouse_float(t_linuxmouse* x) +{ + DEBUG(post("linuxmouse_float");) + +} + +// DONE +void linuxmouse_start(t_linuxmouse* x) +{ + DEBUG(post("linuxmouse_start");) + + if (x->x_fd >= 0 && !x->started) { + sys_addpollfn(x->x_fd, (t_fdpollfn)linuxmouse_read, x); + post("linuxmouse: start"); + x->started = 1; + } +} + + +// DONE +void linuxmouse_stop(t_linuxmouse* x) +{ + DEBUG(post("linuxmouse_stop");) + + if (x->x_fd >= 0 && x->started) { + sys_rmpollfn(x->x_fd); + post("linuxmouse: stop"); + x->started = 0; + } +} + +/* Misc setup functions */ + + +static void linuxmouse_free(t_linuxmouse* x) +{ + DEBUG(post("linuxmouse_free");) + + if (x->x_fd < 0) return; + + linuxmouse_stop(x); + + close (x->x_fd); +} + +static void *linuxmouse_new(t_symbol *s) +{ + int i; + t_linuxmouse *x = (t_linuxmouse *)pd_new(linuxmouse_class); + + DEBUG(post("linuxmouse_new");) + + /* init vars */ + x->x_fd = -1; + x->read_ok = 1; + x->started = 0; + + /* create outlets for each axis */ + for (i = 0; i < LINUXMOUSE_AXES; i++) + x->x_axis_out[i] = outlet_new(&x->x_obj, &s_float); + + /* create outlets for buttons */ + x->x_button_num_out = outlet_new(&x->x_obj, &s_float); + x->x_button_val_out = outlet_new(&x->x_obj, &s_float); + + if (s != &s_) + x->x_devname = s; + + /* Open the device and save settings */ + + if (!linuxmouse_open(x,s)) return x; + + return (x); +} + + +void linuxmouse_setup(void) +{ + DEBUG(post("linuxmouse_setup");) + linuxmouse_class = class_new(gensym("linuxmouse"), + (t_newmethod)linuxmouse_new, + (t_method)linuxmouse_free, + sizeof(t_linuxmouse),0,A_DEFSYM,0); + + /* add inlet datatype methods */ + class_addfloat(linuxmouse_class,(t_method) linuxmouse_float); + class_addbang(linuxmouse_class,(t_method) linuxmouse_bang); + + /* add inlet message methods */ + class_addmethod(linuxmouse_class, (t_method) linuxmouse_open,gensym("open"),A_DEFSYM); + class_addmethod(linuxmouse_class,(t_method) linuxmouse_close,gensym("close"),0); + class_addmethod(linuxmouse_class,(t_method) linuxmouse_start,gensym("start"),0); + class_addmethod(linuxmouse_class,(t_method) linuxmouse_stop,gensym("stop"),0); + +} + -- cgit v1.2.1