func SpecialKeyMonitor(handle *C.struct_libusb_device_handle, output chan guinput.KeyEvent) {
data_buffer := make([]C.uchar, 512)
key_endpoint := C.uchar(0x82)
transferred_bytes := C.int(0)
pressed_duos := uint8(0)
for {
e := C.libusb_interrupt_transfer(handle, key_endpoint, &data_buffer[0], 512, &transferred_bytes, 10)
switch e {
case 0:
//we did it
log.Print("Special Key data received")
//the media buttons and dials in the top uh right
//THey transfer 2 bytes and the first byte is 2, so duos
if transferred_bytes == 2 && data_buffer[0] == 0x02 {
ParseDuos(uint8(data_buffer[1]), pressed_duos, output)
pressed_duos = uint8(data_buffer[1])
}
for i := 0; i < int(transferred_bytes); i++ {
fmt.Printf("%02x\n", data_buffer[i])
}
case -7:
//nothing happened
default:
//augh, panic
fmt.Println("Augh panic")
}
}
}
func interruptTransfer(ep *EndpointHandle, p []byte, _ bool) (n int, err error) {
var transferred C.int
err0 := returnUsbError(C.libusb_interrupt_transfer(
ep.handle.handle,
C.uchar(ep.ep),
(*C.uchar)(unsafe.Pointer(&p[0])),
C.int(len(p)),
&transferred,
0))
if err0 != nil {
err = err0
}
return int(transferred), err
}
func interrupt_xfer(e *endpoint, buf []byte, timeout time.Duration) (int, error) {
if len(buf) == 0 {
return 0, nil
}
data := (*reflect.SliceHeader)(unsafe.Pointer(&buf)).Data
var cnt C.int
if errno := C.libusb_interrupt_transfer(
e.handle,
C.uchar(e.Address),
(*C.uchar)(unsafe.Pointer(data)),
C.int(len(buf)),
&cnt,
C.uint(timeout/time.Millisecond)); errno < 0 {
return 0, usbError(errno)
}
return int(cnt), nil
}
//Scan for keys on the normal interface
func NormalKeyMonitor(handle *C.struct_libusb_device_handle, output chan guinput.KeyEvent) {
//libusb will drop data into data_buffer, our endpoint id is 0x81 (from lsusb)
data_buffer := make([]C.uchar, 8)
current_keys := make([]uint8, 8)
key_endpoint := C.uchar(0x81)
transferred_bytes := C.int(0)
for {
e := C.libusb_interrupt_transfer(handle, key_endpoint, &data_buffer[0], 8, &transferred_bytes, 100)
switch e {
case 0:
//you got the dataz!!
//TODO: use a slice instead of starting at 2
fmt.Printf("Received usb packet: %02x|%02x.%02x.%02x.%02x.%02x.%02x\n", data_buffer[1], data_buffer[2], data_buffer[3], data_buffer[4], data_buffer[5], data_buffer[6], data_buffer[7])
for i := 2; i < 8; i++ {
if data_buffer[i] == 0x00 && current_keys[i] != 0 {
output <- guinput.KeyEvent{guinput.KEY_UP_CODE, current_keys[i]}
current_keys[i] = 0x00
}
if data_buffer[i] != 0x00 {
log.Printf("Key pressed:%02x", data_buffer[i])
ucode := KEYMAP[uint8(data_buffer[i])]
if ucode != current_keys[i] && current_keys[i] != 0 {
output <- guinput.KeyEvent{guinput.KEY_UP_CODE, current_keys[i]}
}
current_keys[i] = ucode
output <- guinput.KeyEvent{guinput.KEY_DOWN_CODE, current_keys[i]}
}
}
if uint8(data_buffer[0]) != current_keys[0] {
ParseModifiers(uint8(data_buffer[0]), current_keys[0], output)
current_keys[0] = uint8(data_buffer[0])
}
case -7:
//nothing happened
default:
//augh, panic
log.Printf("Normal libusb goroutine encountered %d", e)
}
}
}
func SetLCD(pix *image.Gray) {
if !Connected {
if err := StartLibUsb(); err != nil {
return
}
defer EndLibUsb()
}
var img [992]C.uchar
imgOffset := 32
var curr, row uint8
for offset := 0; offset < 5; offset++ {
for col := 0; col < 160; col++ {
curr = 0
for row = 0; row < 8; row++ {
if pix.Pix[(offset*8+int(row)-pix.Rect.Min.Y)*pix.Stride+(col-pix.Rect.Min.X)]>>4 > 0 {
curr += 1 << row
}
}
img[imgOffset] = C.uchar(curr)
imgOffset++
}
}
for col := 0; col < 160; col++ {
curr = 0
for row = 0; row < 3; row++ {
if pix.Pix[(40+int(row)-pix.Rect.Min.Y)*pix.Stride+(col-pix.Rect.Min.X)]>>4 > 0 {
curr += 1 << row
}
}
img[imgOffset] = C.uchar(curr)
imgOffset++
}
//magic byte from libg15 and USBTrace
img[0] = 0x03
transferred := C.int(0)
C.libusb_interrupt_transfer(keyboardHandle, 0x3, &img[0], 992, &transferred, 1000)
}