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#include "survive_internal.h"
#include <libusb-1.0/libusb.h>
#include <stdio.h>
const short vidpids[] = {
0x0bb4, 0x2c87, 0, //The main HTC HMD device
0x28de, 0x2000, 0, //Valve lighthouse
0x28de, 0x2101, 0, //Valve Watchman
0x28de, 0x2101, 1, //Valve Watchman
}; //length MAX_USB_INTERFACES*2
const char * devnames[] = {
"HMD",
"Lighthouse",
"Watchman 1",
"Watchman 2",
}; //length MAX_USB_INTERFACES
static void handle_transfer(struct libusb_transfer* transfer) {
struct SurviveUSBInterface * iface = transfer->user_data;
if( transfer->status != LIBUSB_TRANSFER_COMPLETED )
{
SV_ERROR("Transfer problem %d with %s", transfer->status, iface->hname );
SV_KILL();
return;
}
iface->actual_len = transfer->actual_length;
iface->cb( iface );
if( libusb_submit_transfer(transfer) )
{
SV_ERROR( "Error resubmitting transfer for %s\n", iface->hname );
SV_KILL();
}
}
static int AttachInterface( struct SurviveContext * t, int which_interface_am_i, libusb_device_handle * devh, int endpoint, usb_callback cb, const char * hname )
{
struct SurviveUSBInterface * iface = &t->uiface[which_interface_am_i];
iface->ctx = t;
iface->which_interface_am_i = which_interface_am_i;
iface->hname = hname;
struct libusb_transfer * tx = iface->transfer = libusb_alloc_transfer(0);
iface->cb = cb;
printf( "%p %d %p %p\n", iface, which_interface_am_i, tx, devh );
if (!iface->transfer)
{
SV_ERROR( "Error: failed on libusb_alloc_transfer for %s\n", hname );
return 4;
}
libusb_fill_interrupt_transfer( tx, devh, endpoint, iface->buffer, INTBUFFSIZE, handle_transfer, iface, 0);
int rc = libusb_submit_transfer( tx );
if( rc )
{
SV_ERROR( "Error: Could not submit transfer for %s (Code %d)\n", hname, rc );
return 6;
}
return 0;
}
void debug_cb( struct SurviveUSBInterface * si )
{
int i;
int len = si->actual_len;
printf( "%16s: %d: ", si->hname, len );
for( i = 0; i < len; i++ )
{
printf( "%02x ", si->buffer[i] );
}
printf( "\n" );
}
int survive_usb_init( struct SurviveContext * t )
{
int r = libusb_init( &t->usbctx );
if( r )
{
SV_ERROR( "libusb fault %d\n", r );
return r;
}
int i;
libusb_device** devs;
int ret = libusb_get_device_list(t->usbctx, &devs);
if( ret < 0 )
{
SV_ERROR( "Couldn't get list of USB devices %d\n", ret );
return ret;
}
//Open all interfaces.
for( i = 0; i < MAX_USB_DEVS; i++ )
{
libusb_device * d;
int vid = vidpids[i*3+0];
int pid = vidpids[i*3+1];
int which = vidpids[i*3+2];
int did;
for( did = 0; d = devs[did]; did++ )
{
struct libusb_device_descriptor desc;
int ret = libusb_get_device_descriptor( d, &desc);
if (ret < 0) {
continue;
}
if( desc.idVendor == vid && desc.idProduct == pid)
{
if( which == 0 ) break;
which--;
}
}
struct libusb_config_descriptor *conf;
ret = libusb_get_config_descriptor(d, 0, &conf);
if( ret )
continue;
ret = libusb_open(d, &t->udev[i]);
if( !t->udev[i] || ret )
{
SV_ERROR( "Error: cannot open device \"%s\" with vid/pid %04x:%04x\n", devnames[i], vid, pid );
return -5;
}
libusb_set_auto_detach_kernel_driver( t->udev[i], 1 );
for (int j = 0; j < conf->bNumInterfaces; j++ )
{
if( libusb_claim_interface(t->udev[i], j) )
{
SV_ERROR( "Could not claim interface %d of %s\n", j, devnames[i] );
return -9;
}
}
SV_INFO( "Successfully enumerated %s (%d, %d)\n", devnames[i], did, conf->bNumInterfaces );
}
libusb_free_device_list( devs, 1 );
if( AttachInterface( t, USB_IF_HMD, t->udev[USB_DEV_HMD], 0x81, debug_cb, "Mainboard" ) ) { return -6; }
if( AttachInterface( t, USB_IF_LIGHTHOUSE, t->udev[USB_DEV_LIGHTHOUSE], 0x81, debug_cb, "Lighthouse" ) ) { return -6; }
if( AttachInterface( t, USB_IF_WATCHMAN1, t->udev[USB_DEV_WATCHMAN1], 0x81, debug_cb, "Watchman 1" ) ) { return -6; }
if( AttachInterface( t, USB_IF_WATCHMAN2, t->udev[USB_DEV_WATCHMAN2], 0x81, debug_cb, "Watchman 2" ) ) { return -6; }
if( AttachInterface( t, USB_IF_LIGHTCAP, t->udev[USB_DEV_LIGHTHOUSE], 0x82, debug_cb, "Lightcap" ) ) { return -6; }
SV_INFO( "All devices attached.\n" );
//libUSB initialized. Continue.
return 0;
}
void survive_usb_close( struct SurviveContext * t )
{
int i;
for( i = 0; i < MAX_USB_DEVS; i++ )
{
libusb_close( t->udev[i] );
}
libusb_exit(t->usbctx);
}
int survive_usb_poll( struct SurviveContext * ctx )
{
int r = libusb_handle_events( ctx->usbctx );
if( r )
{
SV_ERROR( "Libusb poll failed.\n" );
}
return r;
}
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