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Diffstat (limited to 'hid_linux.c')
-rw-r--r--hid_linux.c189
1 files changed, 95 insertions, 94 deletions
diff --git a/hid_linux.c b/hid_linux.c
index ff298ef..7d605e3 100644
--- a/hid_linux.c
+++ b/hid_linux.c
@@ -30,7 +30,7 @@
#define NBITS(x) (((x)/BITS_PER_LONG)+1)
#define LONG(x) ((x)/BITS_PER_LONG)
#define test_bit(bit, array) ((array[LONG(bit)] >> (bit%BITS_PER_LONG)) & 1)
-
+#define ISBITSET(x,i) ((x[i>>3] & (1<<(i&7)))!=0)
/*
* from an email from Vojtech:
@@ -65,7 +65,7 @@ t_symbol* hid_convert_linux_buttons_to_numbers(__u16 linux_code)
snprintf(hid_code, MAXPDSTRING,"btn_%d",linux_code - BTN_WHEEL);
else return 0;
}
- return gensym(hid_code ? hid_code : "?");
+ return gensym(hid_code);
}
/* Georg Holzmann: implementation of the keys */
@@ -261,30 +261,27 @@ void hid_print_device_list(void)
debug_print(LOG_DEBUG,"hid_print_device_list");
int i,fd;
char device_output_string[MAXPDSTRING] = "Unknown";
- char dev_handle_name[MAXPDSTRING] = "/dev/input/event0";
+ char dev_handle_name[FILENAME_MAX] = "/dev/input/event0";
post("");
- for(i=0;i<128;++i)
+ for(i=0;i<MAX_DEVICES;++i)
{
- snprintf(dev_handle_name, MAXPDSTRING, "/dev/input/event%d", i);
- if(dev_handle_name)
- {
- /* open the device read-only, non-exclusive */
- fd = open (dev_handle_name, O_RDONLY | O_NONBLOCK);
- /* test if device open */
- if(fd < 0 )
- {
- fd = -1;
- }
- else
- {
- /* get name of device */
- ioctl(fd, EVIOCGNAME(sizeof(device_output_string)), device_output_string);
- post("Device %d: '%s' on '%s'", i, device_output_string, dev_handle_name);
+ snprintf(dev_handle_name, FILENAME_MAX, "/dev/input/event%d", i);
+ /* open the device read-only, non-exclusive */
+ fd = open (dev_handle_name, O_RDONLY | O_NONBLOCK);
+ /* test if device open */
+ if(fd < 0 )
+ {
+ fd = -1;
+ }
+ else
+ {
+ /* get name of device */
+ ioctl(fd, EVIOCGNAME(sizeof(device_output_string)), device_output_string);
+ post("Device %d: '%s' on '%s'", i, device_output_string, dev_handle_name);
- close (fd);
- }
- }
+ close (fd);
+ }
}
post("");
}
@@ -300,34 +297,39 @@ static void hid_build_element_list(t_hid *x)
t_hid_element *new_element = NULL;
t_int i, j;
+ if( x->x_fd < 0 )
+ return;
+
element_count[x->x_device_number] = 0;
- if( x->x_fd )
+
+ /* get bitmask representing supported elements (axes, keys, etc.) */
+ memset(element_bitmask, 0, sizeof(element_bitmask));
+ if( ioctl(x->x_fd, EVIOCGBIT(0, EV_MAX), element_bitmask[0]) < 0 )
+ perror("[hid] error: evdev ioctl: element_bitmask");
+ memset(abs_bitmask, 0, sizeof(abs_bitmask));
+ if( ioctl(x->x_fd, EVIOCGBIT(EV_ABS, sizeof(abs_bitmask)), abs_bitmask) < 0 )
+ perror("[hid] error: evdev ioctl: abs_bitmask");
+ for( i = 1; i < EV_MAX; i++ )
{
- /* get bitmask representing supported elements (axes, keys, etc.) */
- memset(element_bitmask, 0, sizeof(element_bitmask));
- if( ioctl(x->x_fd, EVIOCGBIT(0, EV_MAX), element_bitmask[0]) < 0 )
- perror("[hid] error: evdev ioctl: element_bitmask");
- memset(abs_bitmask, 0, sizeof(abs_bitmask));
- if( ioctl(x->x_fd, EVIOCGBIT(EV_ABS, sizeof(abs_bitmask)), abs_bitmask) < 0 )
- perror("[hid] error: evdev ioctl: abs_bitmask");
- for( i = 1; i < EV_MAX; i++ )
+ if(test_bit(i, element_bitmask[0]))
{
- if(test_bit(i, element_bitmask[0]))
+ /* get bitmask representing supported elements */
+ ioctl(x->x_fd, EVIOCGBIT(i, KEY_MAX), element_bitmask[i]);
+ /* cycle through all possible event codes (axes, keys, etc.)
+ * testing to see which are supported.
+ */
+ for(j = 0; j < KEY_MAX; j++)
{
- /* get bitmask representing supported button types */
- ioctl(x->x_fd, EVIOCGBIT(i, KEY_MAX), element_bitmask[i]);
- /* cycle through all possible event codes (axes, keys, etc.)
- * testing to see which are supported.
- * i = i j = j
- */
- for(j = 0; j < KEY_MAX; j++)
+ if(test_bit(j, element_bitmask[i]))
{
- new_element = getbytes(sizeof(t_hid_element));
- if( (i == EV_ABS) && (test_bit(j, abs_bitmask)) )
+ new_element = getbytes(sizeof(t_hid_element));
+ if( (i == EV_ABS) && (j < ABS_MAX) && (test_bit(j, abs_bitmask)) )
{
- /* this means that the bit is set in the axes list */
- if(ioctl(x->x_fd, EVIOCGABS(j), &abs_features))
- perror("evdev EVIOCGABS ioctl");
+ if(ioctl(x->x_fd, EVIOCGABS(j), &abs_features) < 0)
+ {
+ post("[hid]: EVIOCGABS ioctl error for element: 0x%03x", j, j);
+ perror("[hid]: EVIOCGABS ioctl error:");
+ }
new_element->min = abs_features.minimum;
new_element->max = abs_features.maximum;
}
@@ -336,38 +338,26 @@ static void hid_build_element_list(t_hid *x)
new_element->min = 0;
new_element->max = 0;
}
- if(test_bit(j, element_bitmask[i]))
+ new_element->linux_type = i; /* the int from linux/input.h */
+ new_element->type = gensym(ev[i] ? ev[i] : "?"); /* the symbol */
+ new_element->linux_code = j;
+ if((i == EV_KEY) && (j >= BTN_MISC) && (j < KEY_OK) )
{
- new_element->linux_type = i; /* the int from linux/input.h */
- new_element->type = gensym(ev[i] ? ev[i] : "?"); /* the symbol */
- new_element->linux_code = j;
- if((i == EV_KEY) && (j >= BTN_MISC) && (j < KEY_OK) )
- {
- new_element->name = hid_convert_linux_buttons_to_numbers(j);
- }
- else
- {
- new_element->name = gensym(event_names[i][j] ? event_names[i][j] : "?");
- }
- if( i == EV_REL )
- new_element->relative = 1;
- else
- new_element->relative = 0;
- // fill in the t_hid_element struct here
- post("x->x_device_number: %d element_count[]: %d",
- x->x_device_number, element_count[x->x_device_number]);
- post("linux_type/linux_code: %d/%d type/name: %s/%s max: %d min: %d ",
- new_element->linux_type, new_element->linux_code,
- new_element->type->s_name, new_element->name->s_name,
- new_element->max, new_element->min);
- post("\tpolled: %d relative: %d",
- new_element->polled, new_element->relative);
- element[x->x_device_number][element_count[x->x_device_number]] = new_element;
- ++element_count[x->x_device_number];
+ new_element->name = hid_convert_linux_buttons_to_numbers(j);
}
+ else
+ {
+ new_element->name = gensym(event_names[i][j] ? event_names[i][j] : "?");
+ }
+ if( i == EV_REL )
+ new_element->relative = 1;
+ else
+ new_element->relative = 0;
+ element[x->x_device_number][element_count[x->x_device_number]] = new_element;
+ ++element_count[x->x_device_number];
}
- }
- }
+ }
+ }
}
}
@@ -377,8 +367,6 @@ static void hid_build_element_list(t_hid *x)
void hid_get_events(t_hid *x)
{
- debug_print(9,"hid_get_events");
-
/* for debugging, counts how many events are processed each time hid_read() is called */
DEBUG(t_int event_counter = 0;);
unsigned short i;
@@ -434,27 +422,24 @@ t_int hid_open_device(t_hid *x, short device_number)
debug_print(LOG_DEBUG,"hid_open_device");
char device_name[MAXPDSTRING] = "Unknown";
- char block_device[MAXPDSTRING] = "/dev/input/event0";
+ char block_device[FILENAME_MAX] = "/dev/input/event0";
struct input_event hid_input_event;
x->x_fd = -1;
x->x_device_number = device_number;
- snprintf(block_device,MAXPDSTRING,"/dev/input/event%d",x->x_device_number);
-
- if(block_device)
- {
- /* open the device read-only, non-exclusive */
- x->x_fd = open(block_device, O_RDONLY | O_NONBLOCK);
- /* test if device open */
- if(x->x_fd < 0 )
- {
- error("[hid] open %s failed",block_device);
- x->x_fd = -1;
- return 1;
- }
- }
-
+ snprintf(block_device,FILENAME_MAX,"/dev/input/event%d",x->x_device_number);
+
+ /* open the device read-only, non-exclusive */
+ x->x_fd = open(block_device, O_RDONLY | O_NONBLOCK);
+ /* test if device open */
+ if(x->x_fd < 0 )
+ {
+ error("[hid] open %s failed",block_device);
+ x->x_fd = -1;
+ return 1;
+ }
+
/* read input_events from the HID_DEVICE stream
* It seems that is just there to flush the input event queue
*/
@@ -465,7 +450,6 @@ t_int hid_open_device(t_hid *x, short device_number)
post ("[hid] opened device %d (%s): %s",
x->x_device_number,block_device,device_name);
- post("pre hid_build_element_list");
hid_build_element_list(x);
return (0);
@@ -496,7 +480,7 @@ void hid_build_device_list(void)
unsigned int i;
unsigned int last_active_device = 0;
char device_name[MAXPDSTRING] = "Unknown";
- char block_device[MAXPDSTRING] = "/dev/input/event0";
+ char block_device[FILENAME_MAX] = "/dev/input/event0";
struct input_event x_input_event;
debug_print(LOG_DEBUG,"hid_build_device_list");
@@ -551,7 +535,7 @@ void hid_platform_specific_info(t_hid* x)
char product_id_string[7];
t_atom *output_atom = getbytes(sizeof(t_atom));
- ioctl(x->x_fd, EVIOCGID);
+ ioctl(x->x_fd, EVIOCGID, &my_id);
snprintf(vendor_id_string,7,"0x%04x", my_id.vendor);
SETSYMBOL(output_atom, gensym(vendor_id_string));
outlet_anything( x->x_status_outlet, gensym("vendorID"),
@@ -570,6 +554,23 @@ void hid_platform_specific_info(t_hid* x)
short get_device_number_by_id(unsigned short vendor_id, unsigned short product_id)
{
+ int i, fd;
+ char dev_handle_name[FILENAME_MAX];
+ struct input_id my_id;
+
+ for(i=0;i<MAX_DEVICES;++i)
+ {
+ snprintf(dev_handle_name, FILENAME_MAX, "/dev/input/event%d", i);
+ /* open the device read-only, non-exclusive */
+ fd = open (dev_handle_name, O_RDONLY | O_NONBLOCK);
+ /* test if device open */
+ if(fd > -1 )
+ {
+ ioctl(fd, EVIOCGID, &my_id);
+ if( (vendor_id == my_id.vendor) && (product_id == my_id.product) )
+ return i;
+ }
+ }
return -1;
}
generated by cgit v1.2.1 (git 2.18.0) at 2024-04-30 02:23:54 +0000