func NewPlayer(sampleRate, channelNum, bytesPerSample int) (*Player, error) {
numBlockAlign := channelNum * bytesPerSample
f := C.WAVEFORMATEX{
wFormatTag: C.WAVE_FORMAT_PCM,
nChannels: C.WORD(channelNum),
nSamplesPerSec: C.DWORD(sampleRate),
nAvgBytesPerSec: C.DWORD(sampleRate * numBlockAlign),
wBitsPerSample: C.WORD(bytesPerSample * 8),
nBlockAlign: C.WORD(numBlockAlign),
}
var w C.HWAVEOUT
if err := C.waveOutOpen(&w, C.WAVE_MAPPER, &f, 0, 0, C.CALLBACK_NULL); err != C.MMSYSERR_NOERROR {
return nil, fmt.Errorf("driver: waveOutOpen error: %d", err)
}
p := &Player{
out: w,
buffer: []byte{},
headers: make([]*header, numHeader),
}
for i := 0; i < numHeader; i++ {
var err error
p.headers[i], err = newHeader(w, bufferSize)
if err != nil {
return nil, err
}
}
return p, nil
}
func checkLogin(ip string, login string, password string, results chan DeviceInfo) bool {
var device C.NET_DVR_DEVICEINFO
uid := (int64)(C.NET_DVR_Login(
C.CString(ip),
C.WORD(port),
C.CString(login),
C.CString(password),
(*C.NET_DVR_DEVICEINFO)(unsafe.Pointer(&device)),
))
if uid >= 0 {
succ.Printf("Logged in: %s:%s@%s\n", login, password, ip)
if shoots_path != "" {
processSnapshots(ip, uid, login, password, device)
}
results <- DeviceInfo{
login,
password,
(uint8)(device.byStartChan),
(uint8)(device.byChanNum),
CameraAddress{ip, port},
}
C.NET_DVR_Logout((C.LONG)(uid))
return true
} else {
return false
}
}
// WriteToBuffer writes the given characters and colors to the buffer with the
// given handle.
func WriteToBuffer(handle ScreenBufferHandle, chars [][]rune, colors [][]int) {
height := len(chars)
if height == 0 {
return
}
width := len(chars[0])
charInfoBuffer := make([]C.CHAR_INFO, height*width)
k := 0
for i := 0; i < height; i++ {
for j := 0; j < width; j++ {
info := C.MakeCharInfo(C.CHAR(chars[i][j]), C.WORD(colors[i][j]))
charInfoBuffer[k] = info
k++
}
}
C.WriteToBuffer(handle.handle, C.SHORT(width), C.SHORT(height), &charInfoBuffer[0])
}
// #include <Winuser.h>
"C"
"syscall"
)
import "unsafe"
var (
user32 = syscall.NewLazyDLL("user32.dll")
keybdEventInfo = user32.NewProc("SendInput")
)
// for const bellow see https://msdn.microsoft.com/en-us/library/windows/desktop/ms646271(v=vs.85).aspx
// virtual key consts
const (
vkSpace = C.WORD(0x20)
vkLeft = 0x25
vkUp = 0x26
vkRight = 0x27
vkDown = 0x28
vkVolumeDown = 0xAE
vkVolumeUp = 0xAF
)
// input type consts
const (
inputTypeKeyboard = C.DWORD(1)
)
// input flags
const (
