CDevice* camEnumDevices() {
CDevice* devices;
unsigned int size = sizeof(CDevice)*camMAX_DEVICES, count = camMAX_DEVICES;
check(c_enum_devices(camDevices,&size,&count));
camNumDevices = count;
return camDevices;
}
static CResult
list_devices ()
{
CResult ret;
unsigned int req_size = 0, buffer_size = 0, count = 0;
CDevice *devices = NULL;
int i;
printf("Listing available devices:\n");
do {
// Allocate the required memory
if(devices) free(devices);
if(req_size) { // No allocation the first time
devices = (CDevice *)malloc(req_size);
if(devices == NULL)
return C_NO_MEMORY;
buffer_size = req_size;
}
// Try to enumerate. If the buffer is not large enough, the required
// size is returned.
ret = c_enum_devices(devices, &req_size, &count);
if(ret != C_SUCCESS && ret != C_BUFFER_TOO_SMALL)
goto done;
}
while(buffer_size < req_size);
if(count == 0) {
printf("No devices found.\n");
goto done;
}
// Print a list of all available devices
for(i = 0; i < count; i++) {
CDevice *device = &devices[i];
print_device(device);
ret = list_entities(device);
if(ret != C_SUCCESS && ret != C_INVALID_ARG) {
print_error("Unable to list device entities", ret);
ret = C_SUCCESS;
}
}
done:
if(devices) free(devices);
if(ret)
print_error("Unable to retrieve device list", ret);
return ret;
}
