static int
openKeyboardDevice (BrailleDisplay *brl) {
static const char deviceName[] = KEYBOARD_DEVICE_NAME;
char *devicePath = findKeyboardDevice(deviceName);
if (devicePath) {
int deviceDescriptor = open(devicePath, O_RDONLY);
if (deviceDescriptor != -1) {
if (setBlockingIo(deviceDescriptor, 0)) {
if (ioctl(deviceDescriptor, EVIOCGRAB, 1) != -1) {
logMessage(LOG_DEBUG, "Keyboard Device Opened: %s: %s: fd=%d",
deviceName, devicePath, deviceDescriptor);
free(devicePath);
brl->data->keyboardDevice = deviceDescriptor;
return 1;
} else {
logSystemError("ioctl[EVIOCGRAB]");
}
}
close(deviceDescriptor);
} else {
logMessage(LOG_DEBUG, "keyboard device open error: %s: %s",
devicePath, strerror(errno));
}
free(devicePath);
}
return 0;
}
PcmDevice *
openPcmDevice (int errorLevel, const char *device) {
PcmDevice *pcm;
if ((pcm = malloc(sizeof(*pcm)))) {
if (!*device) device = PCM_OSS_DEVICE_PATH;
if ((pcm->fileDescriptor = open(device, O_WRONLY|O_NONBLOCK)) != -1) {
/* Nonblocking if snd_seq_oss is loaded with nonblock_open=1.
* There appears to be a bug in this case as write() always
* returns the full count even though large chunks of sound are
* missing. For now, therefore, force blocking output.
*/
setBlockingIo(pcm->fileDescriptor, 1);
pcm->driverVersion = 0X030000;
#ifdef OSS_GETVERSION
if (ioctl(pcm->fileDescriptor, OSS_GETVERSION, &pcm->driverVersion) == -1)
logMessage(errorLevel, "cannot get OSS driver version");
#endif /* OSS_GETVERSION */
logMessage(LOG_DEBUG, "OPSS driver version: %06X", pcm->driverVersion);
setPcmSampleRate(pcm, 8000);
setPcmChannelCount(pcm, 1);
return pcm;
} else {
logMessage(errorLevel, "cannot open PCM device: %s: %s", device, strerror(errno));
}
free(pcm);
} else {
logSystemError("PCM device allocation");
}
return NULL;
}
int
usbMakeInputPipe (UsbEndpoint *endpoint) {
if (usbHaveInputPipe(endpoint)) return 1;
if (createAnonymousPipe(&endpoint->direction.input.pipe.input,
&endpoint->direction.input.pipe.output)) {
if (setBlockingIo(endpoint->direction.input.pipe.output, 0)) {
return 1;
}
}
usbDestroyInputPipe(endpoint);
return 0;
}