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libg15/debian/patches/02-Migrate-from-legacy-libusb-0.1-to-libusb-1.0.patch
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Migrate from legacy libusb-0.1 to libusb-1.0
2019-11-16 23:45:55 +03:00
From: Alexander Ponyatykh <lazyranma@gmail.com>
Date: Fri, 15 Nov 2019 08:46:54 +0300
Subject: Migrate from legacy libusb-0.1 to libusb-1.0
---
configure.in | 5 +-
libg15.c | 458 ++++++++++++++++++++++++++++-------------------------------
2 files changed, 222 insertions(+), 241 deletions(-)
--- a/configure.in
+++ b/configure.in
@@ -31,7 +31,8 @@
esac
# Checks for libraries.
-AC_CHECK_LIB([usb], [main], ,AC_MSG_ERROR(["libusb not found. please install it"]))
+AC_CHECK_LIB([usb-1.0], [main], ,AC_MSG_ERROR(["libusb-1.0 not found. Please install it."]))
+AC_CHECK_LIB([usb-1.0], [libusb_set_option], ,AC_MSG_ERROR(["libusb-1.0 is too old. Please upgrade to version 1.0.22 or later."]))
dnl Some versions of libusb do not honour timeout and block. Suns' version is one of them.
if test "x$libusb_blocks" == "xtrue"; then
@@ -41,7 +42,7 @@
# Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS([string.h])
-AC_CHECK_HEADERS([usb.h])
+AC_CHECK_HEADERS([libusb-1.0/libusb.h])
# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
--- a/libg15.c
+++ b/libg15.c
@@ -24,14 +24,14 @@
#include "libg15.h"
#include <stdio.h>
#include <stdarg.h>
-#include <usb.h>
+#include <libusb-1.0/libusb.h>
#include <string.h>
#include <errno.h>
+#include <unistd.h>
#include "config.h"
-static usb_dev_handle *keyboard_device = 0;
+static libusb_device_handle *keyboard_device = 0;
static int libg15_debugging_enabled = 0;
-static int enospc_slowdown = 0;
static int found_devicetype = -1;
static int shared_device = 0;
@@ -67,7 +67,8 @@
void libg15Debug(int option) {
libg15_debugging_enabled = option;
- usb_set_debug(option);
+ if (option)
+ libusb_set_option(NULL, LIBUSB_OPTION_LOG_LEVEL, LIBUSB_LOG_LEVEL_DEBUG);
}
/* debugging wrapper */
@@ -86,191 +87,205 @@
/* return number of connected and supported devices */
int g15NumberOfConnectedDevices() {
- struct usb_bus *bus = 0;
- struct usb_device *dev = 0;
- int i=0;
+ struct libusb_device_descriptor desc;
+ libusb_device **list;
unsigned int found = 0;
- for (i=0; g15_devices[i].name !=NULL;i++)
- for (bus = usb_busses; bus; bus = bus->next)
+ ssize_t cnt = libusb_get_device_list(NULL, &list);
+
+ if (cnt < 0)
+ {
+ g15_log(stderr, G15_LOG_WARN, "Unable to list USB devices: %s\n", libusb_strerror(cnt));
+ return 0;
+ }
+
+ for (ssize_t i = 0; i < cnt; i++)
{
- for (dev = bus->devices; dev; dev = dev->next)
+ libusb_get_device_descriptor(list[i], &desc);
+
+ for (int j = 0; g15_devices[i].name != NULL; j++)
{
- if ((dev->descriptor.idVendor == g15_devices[i].vendorid && dev->descriptor.idProduct == g15_devices[i].productid))
+ if ((desc.idVendor == g15_devices[j].vendorid && desc.idProduct == g15_devices[j].productid))
found++;
+ break;
}
}
+
+ libusb_free_device_list(list, 1);
+
g15_log(stderr,G15_LOG_INFO,"Found %i supported devices\n",found);
return found;
}
static int initLibUsb()
{
- usb_init();
-
- /**
- * usb_find_busses and usb_find_devices both report the number of devices
- * / busses added / removed since the last call. since this is the first
- * call we have to return values != 0 or else we didnt find anything */
+ int errcode = libusb_init(NULL);
- if (!usb_find_busses())
- return G15_ERROR_OPENING_USB_DEVICE;
-
- if (!usb_find_devices())
+ if (errcode != 0)
+ {
+ g15_log(stderr, G15_LOG_WARN, "Failed to initialize libusb-1.0: %s\n", libusb_strerror(errcode));
return G15_ERROR_OPENING_USB_DEVICE;
+ }
return G15_NO_ERROR;
}
-static usb_dev_handle * findAndOpenDevice(libg15_devices_t handled_device, int device_index)
+static libusb_device_handle * findAndOpenDevice(libg15_devices_t handled_device, int device_index)
{
- struct usb_bus *bus = 0;
- struct usb_device *dev = 0;
- int retries=0;
- int j,i,k,l;
- int interface=0;
+ struct libusb_device_descriptor desc;
+ libusb_device_handle *devh = 0;
+ libusb_device **list = 0;
+ libusb_device *dev = 0;
+ int interface = 0;
+ int retries = 0;
+ int ret;
+
+ ssize_t cnt = libusb_get_device_list(NULL, &list);
- for (bus = usb_busses; bus; bus = bus->next)
+ if (cnt < 0)
{
- for (dev = bus->devices; dev; dev = dev->next)
+ g15_log(stderr, G15_LOG_WARN, "Unable to list USB devices: %s\n", libusb_strerror(cnt));
+ return 0;
+ }
+
+ for (ssize_t devno = 0; devno < cnt; devno++)
+ {
+ libusb_get_device_descriptor(list[devno], &desc);
+ if (desc.idVendor == handled_device.vendorid && desc.idProduct == handled_device.productid)
{
- if ((dev->descriptor.idVendor == handled_device.vendorid && dev->descriptor.idProduct == handled_device.productid))
- {
- int ret=0;
- char name_buffer[65535];
- name_buffer[0] = 0;
- usb_dev_handle *devh = 0;
- found_devicetype = device_index;
- g15_log(stderr,G15_LOG_INFO,"Found %s, trying to open it\n",handled_device.name);
-#if 0
- devh = usb_open(dev);
- usb_reset(devh);
- usleep(50*1000);
- usb_close(devh);
-#endif
- devh = usb_open(dev);
- if (!devh)
- {
- g15_log(stderr,G15_LOG_INFO, "Error, could not open the keyboard\n");
- g15_log(stderr,G15_LOG_INFO, "Perhaps you don't have enough permissions to access it\n");
- return 0;
- }
+ dev = list[devno];
+ break;
+ }
+ }
+
+ if (!dev) {
+ libusb_free_device_list(list, 1);
+ return 0;
+ }
+
+ found_devicetype = device_index;
+
+ g15_log(stderr,G15_LOG_INFO,"Found %s, trying to open it\n",handled_device.name);
- usleep(50*1000);
+ ret = libusb_open(dev, &devh);
+ libusb_free_device_list(list, 1);
- g15_log(stderr, G15_LOG_INFO, "Device has %i possible configurations\n",dev->descriptor.bNumConfigurations);
+ if (ret || !devh)
+ {
+ g15_log(stderr,G15_LOG_WARN, "Error, could not open the keyboard: %s\n", libusb_strerror(ret));
+ return 0;
+ }
+
+ usleep(50*1000);
+
+ g15_log(stderr, G15_LOG_INFO, "Device has %i possible configurations\n", desc.bNumConfigurations);
- /* if device is shared with another driver, such as the Z-10 speakers sharing with alsa, we have to disable some calls */
- if(g15DeviceCapabilities() & G15_DEVICE_IS_SHARED)
- shared_device = 1;
+ /* if device is shared with another driver, such as the Z-10 speakers sharing with alsa, we have to disable some calls */
+ if(g15DeviceCapabilities() & G15_DEVICE_IS_SHARED)
+ shared_device = 1;
- for (j = 0; j<dev->descriptor.bNumConfigurations;j++){
- struct usb_config_descriptor *cfg = &dev->config[j];
+ for (int j = 0; j < desc.bNumConfigurations; j++)
+ {
+ struct libusb_config_descriptor *cfg;
+ if (libusb_get_config_descriptor(dev, j, &cfg)) continue;
+
+ for (int i = 0; i < cfg->bNumInterfaces; i++)
+ {
+ if (g15DeviceCapabilities() & G15_DEVICE_G510)
+ {
+ if (i==G510_STANDARD_KEYBOARD_INTERFACE) continue;
+ }
- for (i=0;i<cfg->bNumInterfaces; i++){
- if (g15DeviceCapabilities()&G15_DEVICE_G510){
- if (i==G510_STANDARD_KEYBOARD_INTERFACE) continue;
+ const struct libusb_interface *ifp = &cfg->interface[i];
+ /* if endpoints are already known, finish up */
+ if (g15_keys_endpoint && g15_lcd_endpoint)
+ break;
+ g15_log(stderr, G15_LOG_INFO, "Device has %i Alternate Settings\n", ifp->num_altsetting);
+
+ for (int k=0; k < ifp->num_altsetting; k++)
+ {
+ const struct libusb_interface_descriptor *as = &ifp->altsetting[k];
+ /* verify that the interface is for a HID device */
+ if (as->bInterfaceClass == LIBUSB_CLASS_HID)
+ {
+ g15_log(stderr, G15_LOG_INFO, "Interface %i has %i Endpoints\n", i, as->bNumEndpoints);
+ usleep(50*1000);
+
+ if (libusb_kernel_driver_active(devh, i) == 1)
+ {
+ g15_log(stderr, G15_LOG_INFO, "Trying to detach driver currently attached.\n");
+
+ ret = libusb_detach_kernel_driver(devh, i);
+ if (!ret)
+ {
+ g15_log(stderr,G15_LOG_INFO,"Success, detached the driver\n");
+ }
+ else
+ {
+ g15_log(stderr,G15_LOG_INFO,"Could not detach the driver, giving up: %s\n", libusb_strerror(ret));
+ break;
}
- struct usb_interface *ifp = &cfg->interface[i];
- /* if endpoints are already known, finish up */
- if(g15_keys_endpoint && g15_lcd_endpoint)
- break;
- g15_log(stderr, G15_LOG_INFO, "Device has %i Alternate Settings\n", ifp->num_altsetting);
-
- for(k=0;k<ifp->num_altsetting;k++){
- struct usb_interface_descriptor *as = &ifp->altsetting[k];
- /* verify that the interface is for a HID device */
- if(as->bInterfaceClass==USB_CLASS_HID){
- g15_log(stderr, G15_LOG_INFO, "Interface %i has %i Endpoints\n", i, as->bNumEndpoints);
- usleep(50*1000);
- /* libusb functions ending in _np are not portable between OS's
- * Non-linux users will need some way to detach the HID driver from
- * the G15 until we work out how to do this for other OS's automatically.
- * For the moment, we just skip this code..
- */
-#ifdef LIBUSB_HAS_GET_DRIVER_NP
- ret = usb_get_driver_np(devh, i, name_buffer, 65535);
- /* some kernel versions say that a driver is attached even though there is none
- in this case the name buffer has not been changed
- thanks to RobEngle for pointing this out */
- if (!ret && name_buffer[0])
- {
- g15_log(stderr,G15_LOG_INFO,"Trying to detach driver currently attached: \"%s\"\n",name_buffer);
-
- ret = usb_detach_kernel_driver_np(devh, i);
- if (!ret)
- {
- g15_log(stderr,G15_LOG_INFO,"Success, detached the driver\n");
- }
- else
- {
- g15_log(stderr,G15_LOG_INFO,"Sorry, I could not detach the driver, giving up\n");
- return 0;
- }
-
- }
-#endif
- /* don't set configuration if device is shared */
- if(0 == shared_device) {
- ret = usb_set_configuration(devh, 1);
- if (ret)
- {
- g15_log(stderr,G15_LOG_INFO,"Error setting the configuration, this is fatal\n");
- return 0;
- }
- }
- usleep(50*1000);
- while((ret = usb_claim_interface(devh,i)) && retries <10) {
- usleep(50*1000);
- retries++;
- g15_log(stderr,G15_LOG_INFO,"Trying to claim interface\n");
- }
-
- if (ret)
- {
- g15_log(stderr,G15_LOG_INFO,"Error claiming interface, good day cruel world\n");
- return 0;
- }
-
- for (l=0; l< as->bNumEndpoints;l++){
- struct usb_endpoint_descriptor *ep=&as->endpoint[l];
- g15_log(stderr, G15_LOG_INFO, "Found %s endpoint %i with address 0x%X maxtransfersize=%i \n",
- 0x80&ep->bEndpointAddress?"\"Extra Keys\"":"\"LCD\"",
- ep->bEndpointAddress&0x0f,ep->bEndpointAddress, ep->wMaxPacketSize
- );
-
- if(0x80 & ep->bEndpointAddress) {
- g15_keys_endpoint = ep->bEndpointAddress;
- } else {
- g15_lcd_endpoint = ep->bEndpointAddress;
- }
-#if 0
- usb_resetep(devh,ep->bEndpointAddress);
-#endif
- }
-
- if (ret)
- {
- g15_log(stderr, G15_LOG_INFO, "Error setting Alternate Interface\n");
- }
- }
+ }
+ /* don't set configuration if device is shared */
+ if (0 == shared_device) {
+ ret = libusb_set_configuration(devh, 1);
+ if (ret)
+ {
+ g15_log(stderr,G15_LOG_INFO,"Error setting the configuration, this is fatal: %s\n", libusb_strerror(ret));
+ break;
}
}
- }
+ usleep(50*1000);
+ while((ret = libusb_claim_interface(devh,i)) && retries <10) {
+ usleep(50*1000);
+ retries++;
+ g15_log(stderr,G15_LOG_INFO,"Trying to claim interface\n");
+ }
+ if (ret)
+ {
+ g15_log(stderr,G15_LOG_INFO,"Error claiming interface, good day cruel world: %s\n", libusb_strerror(ret));
+ break;
+ }
- g15_log(stderr,G15_LOG_INFO,"Done opening the keyboard\n");
- usleep(500*1000); // sleep a bit for good measure
- return devh;
+ for (int l = 0; l < as->bNumEndpoints; l++)
+ {
+ const struct libusb_endpoint_descriptor *ep=&as->endpoint[l];
+ g15_log(stderr, G15_LOG_INFO, "Found %s endpoint %i with address 0x%X maxtransfersize=%i \n",
+ 0x80&ep->bEndpointAddress?"\"Extra Keys\"":"\"LCD\"",
+ ep->bEndpointAddress&0x0f,ep->bEndpointAddress, ep->wMaxPacketSize
+ );
+
+ if(0x80 & ep->bEndpointAddress)
+ {
+ g15_keys_endpoint = ep->bEndpointAddress;
+ } else {
+ g15_lcd_endpoint = ep->bEndpointAddress;
+ }
+ }
+ }
}
}
+
+ libusb_free_config_descriptor(cfg);
+ }
+
+ if (g15_keys_endpoint || g15_lcd_endpoint) {
+ g15_log(stderr,G15_LOG_INFO,"Done opening the keyboard\n");
+ usleep(500*1000); // sleep a bit for good measure
+ return devh;
+ } else {
+ found_devicetype = -1;
+ libusb_release_interface(devh, 0);
+ libusb_attach_kernel_driver(devh, 0);
+ libusb_close(devh);
+ return 0;
}
- return 0;
}
-static usb_dev_handle * findAndOpenG15() {
+static libusb_device_handle * findAndOpenG15() {
int i;
for (i=0; g15_devices[i].name !=NULL ;i++){
g15_log(stderr,G15_LOG_INFO,"Trying to find %s\n",g15_devices[i].name);
@@ -288,19 +303,13 @@
{
int retval = G15_NO_ERROR;
- enospc_slowdown = shared_device = g15_keys_endpoint = g15_lcd_endpoint = 0;
+ shared_device = g15_keys_endpoint = g15_lcd_endpoint = 0;
found_devicetype = -1;
- if (keyboard_device){
-#ifndef SUN_LIBUSB
- retval = usb_release_interface (keyboard_device, 0);
- usleep(50*1000);
-#endif
-#if 0
- retval = usb_reset(keyboard_device);
- usleep(50*1000);
-#endif
- usb_close(keyboard_device);
+ if (keyboard_device) {
+ retval = libusb_release_interface(keyboard_device, 0);
+ libusb_attach_kernel_driver(keyboard_device, 0);
+ libusb_close(keyboard_device);
keyboard_device=0;
return retval;
}
@@ -311,9 +320,6 @@
{
closeKeyboardDevice();
- usb_find_busses();
- usb_find_devices();
-
keyboard_device = findAndOpenG15();
if (!keyboard_device)
return G15_ERROR_OPENING_USB_DEVICE;
@@ -330,10 +336,6 @@
g15_log(stderr,G15_LOG_INFO,"%s\n",PACKAGE_STRING);
-#ifdef SUN_LIBUSB
- g15_log(stderr,G15_LOG_INFO,"Using Sun libusb.\n");
-#endif
-
g15NumberOfConnectedDevices();
keyboard_device = findAndOpenG15();
@@ -428,36 +430,6 @@
}
}
-int handle_usb_errors(const char *prefix, int ret) {
-
- switch (ret){
- case -ETIMEDOUT:
- return G15_ERROR_READING_USB_DEVICE; /* backward-compatibility */
- break;
- case -ENOSPC: /* the we don't have enough bandwidth, apparently.. something has to give here.. */
- g15_log(stderr,G15_LOG_INFO,"usb error: ENOSPC.. reducing speed\n");
- enospc_slowdown = 1;
- break;
- case -ENODEV: /* the device went away - we probably should attempt to reattach */
- case -ENXIO: /* host controller bug */
- case -EINVAL: /* invalid request */
- case -EAGAIN: /* try again */
- case -EFBIG: /* too many frames to handle */
- case -EMSGSIZE: /* msgsize is invalid */
- g15_log(stderr,G15_LOG_INFO,"usb error: %s %s (%i)\n",prefix,usb_strerror(),ret);
- break;
- case -EPIPE: /* endpoint is stalled */
- g15_log(stderr,G15_LOG_INFO,"usb error: %s EPIPE! clearing...\n",prefix);
- pthread_mutex_lock(&libusb_mutex);
- usb_clear_halt(keyboard_device, 0x81);
- pthread_mutex_unlock(&libusb_mutex);
- break;
- default: /* timed out */
- g15_log(stderr,G15_LOG_INFO,"Unknown usb error: %s !! (err is %i (%s))\n",prefix,ret,usb_strerror());
- }
- return ret;
-}
-
int writePixmapToLCD(unsigned char const *data)
{
int ret = 0;
@@ -474,43 +446,27 @@
/* the keyboard needs this magic byte */
lcd_buffer[0] = 0x03;
- /* in an attempt to reduce peak bus utilisation, we break the transfer into 32 byte chunks and sleep a bit in between.
- It shouldnt make much difference, but then again, the g15 shouldnt be flooding the bus enough to cause ENOSPC, yet
- apparently does on some machines...
- I'm not sure how successful this will be in combatting ENOSPC, but we'll give it try in the real-world. */
-
- if(enospc_slowdown != 0){
-#ifndef LIBUSB_BLOCKS
- pthread_mutex_lock(&libusb_mutex);
-#endif
- for(transfercount = 0;transfercount<=31;transfercount++){
- ret = usb_interrupt_write(keyboard_device, g15_lcd_endpoint, (char*)lcd_buffer+(32*transfercount), 32, 1000);
- if (ret != 32)
- {
- handle_usb_errors ("LCDPixmap Slow Write",ret);
- return G15_ERROR_WRITING_PIXMAP;
- }
- usleep(100);
+
+ /* transfer entire buffer in one hit */
+ int transferred = 0;
+ pthread_mutex_lock(&libusb_mutex);
+ ret = libusb_interrupt_transfer(keyboard_device, g15_lcd_endpoint, (char*)lcd_buffer, G15_BUFFER_LEN, &transferred, 1000);
+ pthread_mutex_unlock(&libusb_mutex);
+ if (ret || transferred != G15_BUFFER_LEN)
+ {
+ if (!ret) {
+ g15_log(stderr,G15_LOG_INFO,"LCDPixmap write error: short write.\n");
+ } else {
+ g15_log(stderr,G15_LOG_INFO,"LCDPixmap write error: %s.\n", libusb_strerror(ret));
}
-#ifndef LIBUSB_BLOCKS
- pthread_mutex_unlock(&libusb_mutex);
-#endif
- }else{
- /* transfer entire buffer in one hit */
-#ifdef LIBUSB_BLOCKS
- ret = usb_interrupt_write(keyboard_device, g15_lcd_endpoint, (char*)lcd_buffer, G15_BUFFER_LEN, 1000);
-#else
- pthread_mutex_lock(&libusb_mutex);
- ret = usb_interrupt_write(keyboard_device, g15_lcd_endpoint, (char*)lcd_buffer, G15_BUFFER_LEN, 1000);
- pthread_mutex_unlock(&libusb_mutex);
-#endif
- if (ret != G15_BUFFER_LEN)
- {
- handle_usb_errors ("LCDPixmap Write",ret);
- return G15_ERROR_WRITING_PIXMAP;
+ if (ret == LIBUSB_ERROR_PIPE) {
+ pthread_mutex_lock(&libusb_mutex);
+ libusb_clear_halt(keyboard_device, g15_lcd_endpoint);
+ pthread_mutex_unlock(&libusb_mutex);
}
- usleep(100);
+ return G15_ERROR_WRITING_PIXMAP;
}
+ usleep(100);
return 0;
}
@@ -535,7 +491,9 @@
usb_data[3] = 18;
}
pthread_mutex_lock(&libusb_mutex);
- retval = usb_control_msg(keyboard_device, USB_TYPE_CLASS + USB_RECIP_INTERFACE, 9, 0x302, 0, (char*)usb_data, 4, 10000);
+ retval = libusb_control_transfer(keyboard_device,
+ LIBUSB_REQUEST_TYPE_CLASS + LIBUSB_RECIPIENT_INTERFACE + LIBUSB_ENDPOINT_OUT,
+ 9, 0x302, 0, (char*)usb_data, 4, 10000);
pthread_mutex_unlock(&libusb_mutex);
return retval;
}
@@ -553,7 +511,9 @@
return G15_ERROR_UNSUPPORTED;
pthread_mutex_lock(&libusb_mutex);
- retval = usb_control_msg(keyboard_device, USB_TYPE_CLASS + USB_RECIP_INTERFACE, 9, 0x302, 0, (char*)m_led_buf, 4, 10000);
+ retval = libusb_control_transfer(keyboard_device,
+ LIBUSB_REQUEST_TYPE_CLASS + LIBUSB_RECIPIENT_INTERFACE + LIBUSB_ENDPOINT_OUT,
+ 9, 0x302, 0, (char*)m_led_buf, 4, 10000);
pthread_mutex_unlock(&libusb_mutex);
return retval;
}
@@ -578,7 +538,9 @@
usb_data[2] = 0x00;
}
pthread_mutex_lock(&libusb_mutex);
- retval = usb_control_msg(keyboard_device, USB_TYPE_CLASS + USB_RECIP_INTERFACE, 9, 0x302, 0, (char*)usb_data, 4, 10000);
+ retval = libusb_control_transfer(keyboard_device,
+ LIBUSB_REQUEST_TYPE_CLASS + LIBUSB_RECIPIENT_INTERFACE + LIBUSB_ENDPOINT_OUT,
+ 9, 0x302, 0, (char*)usb_data, 4, 10000);
pthread_mutex_unlock(&libusb_mutex);
return retval;
}
@@ -604,7 +566,9 @@
usb_data[2] = 0x0;
}
pthread_mutex_lock(&libusb_mutex);
- retval = usb_control_msg(keyboard_device, USB_TYPE_CLASS + USB_RECIP_INTERFACE, 9, 0x302, 0, (char*)usb_data, 4, 10000);
+ retval = libusb_control_transfer(keyboard_device,
+ LIBUSB_REQUEST_TYPE_CLASS + LIBUSB_RECIPIENT_INTERFACE + LIBUSB_ENDPOINT_OUT,
+ 9, 0x302, 0, (char*)usb_data, 4, 10000);
pthread_mutex_unlock(&libusb_mutex);
return retval;
}
@@ -619,7 +583,9 @@
usb_data[3] = b;
pthread_mutex_lock(&libusb_mutex);
- retval = usb_control_msg(keyboard_device, USB_TYPE_CLASS + USB_RECIP_INTERFACE, 9, 0x305, 1, (char*)usb_data, 4, 10000);
+ retval = libusb_control_transfer(keyboard_device,
+ LIBUSB_REQUEST_TYPE_CLASS + LIBUSB_RECIPIENT_INTERFACE + LIBUSB_ENDPOINT_OUT,
+ 9, 0x305, 1, (char*)usb_data, 4, 10000);
pthread_mutex_unlock(&libusb_mutex);
return retval;
}
@@ -1033,18 +999,30 @@
int getPressedKeys(unsigned int *pressed_keys, unsigned int timeout)
{
unsigned char buffer[G15_KEY_READ_LENGTH];
+ int transferred = 0;
int ret = 0;
int caps = 0;
-#ifdef LIBUSB_BLOCKS
- ret = usb_interrupt_read(keyboard_device, g15_keys_endpoint, (char*)buffer, G15_KEY_READ_LENGTH, timeout);
-#else
pthread_mutex_lock(&libusb_mutex);
- ret = usb_interrupt_read(keyboard_device, g15_keys_endpoint, (char*)buffer, G15_KEY_READ_LENGTH, timeout);
+ ret = libusb_interrupt_transfer(keyboard_device, g15_keys_endpoint, (char*)buffer, G15_KEY_READ_LENGTH, &transferred, timeout);
pthread_mutex_unlock(&libusb_mutex);
-#endif
- if(ret>0) {
- if(buffer[0] == 1)
+
+ switch (ret)
+ {
+ case 0:
+ break;
+ case LIBUSB_ERROR_TIMEOUT:
+ return G15_ERROR_TIMEOUT;
+ case LIBUSB_ERROR_PIPE:
+ pthread_mutex_lock(&libusb_mutex);
+ libusb_clear_halt(keyboard_device, g15_keys_endpoint);
+ pthread_mutex_unlock(&libusb_mutex);
+ //no break
+ default:
+ g15_log(stderr,G15_LOG_INFO,"USB error on keybaord read: %s.\n", libusb_strerror(ret));
+ }
+
+ if (transferred > 0 && buffer[0] == 1) {
return G15_ERROR_TRY_AGAIN;
}
@@ -1054,7 +1032,7 @@
return G15_NO_ERROR;
}
- switch(ret) {
+ switch(transferred) {
case 4:
processKeyEvent4Byte(pressed_keys, buffer);
return G15_NO_ERROR;
@@ -1065,6 +1043,6 @@
processKeyEvent9Byte(pressed_keys, buffer);
return G15_NO_ERROR;
default:
- return handle_usb_errors("Keyboard Read", ret); /* allow the app to deal with errors */
+ return G15_ERROR_READING_USB_DEVICE;
}
}
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