sp<ICamera> CameraService::connect(
const sp<ICameraClient>& cameraClient, int cameraId) {
int callingPid = getCallingPid();
LOG1("CameraService::connect E (pid %d, id %d)", callingPid, cameraId);
sp<Client> client;
if (cameraId < 0 || cameraId >= mNumberOfCameras) {
LOGE("CameraService::connect X (pid %d) rejected (invalid cameraId %d).",
callingPid, cameraId);
return NULL;
}
Mutex::Autolock lock(mServiceLock);
if (mClient[cameraId] != 0) {
client = mClient[cameraId].promote();
if (client != 0) {
if (cameraClient->asBinder() == client->getCameraClient()->asBinder()) {
LOG1("CameraService::connect X (pid %d) (the same client)",
callingPid);
return client;
} else {
LOGW("CameraService::connect X (pid %d) rejected (existing client).",
callingPid);
return NULL;
}
}
mClient[cameraId].clear();
}
if (mBusy[cameraId]) {
LOGW("CameraService::connect X (pid %d) rejected"
" (camera %d is still busy).", callingPid, cameraId);
return NULL;
}
sp<CameraHardwareInterface> hardware = HAL_openCameraHardware(cameraId);
if (hardware == NULL) {
LOGE("Fail to open camera hardware (id=%d)", cameraId);
return NULL;
}
CameraInfo info;
HAL_getCameraInfo(cameraId, &info);
client = new Client(this, cameraClient, hardware, cameraId, info.facing,
callingPid);
mClient[cameraId] = client;
#ifdef USE_OVERLAY_FORMAT_YCbCr_420_SP
if (client->mHardware == NULL) {
client = NULL;
mClient[cameraId] = NULL;
return client;
}
#endif
LOG1("CameraService::connect X");
return client;
}
/* HAL should return NULL if it fails to open camera hardware. */
extern "C" int camera_device_open(
const struct hw_module_t* module, const char* id,
struct hw_device_t** hw_device)
{
ALOGV("Q%s: E", __func__);
int rc = -1;
camera_device *device = NULL;
if(module && id && hw_device) {
int cameraId = atoi(id);
if (!strcmp(module->name, camera_common.name)) {
device =
(camera_device *)malloc(sizeof (struct camera_device));
if(device) {
camera_hardware_t *camHal =
(camera_hardware_t *) malloc(sizeof (camera_hardware_t));
if(camHal) {
memset(camHal, 0, sizeof (camera_hardware_t));
camHal->hardware = HAL_openCameraHardware(cameraId);
if (camHal->hardware != NULL) {
/*To Do: populate camHal*/
device->common.close = close_camera_device;
device->ops = &camera_ops;
device->priv = (void *)camHal;
rc = 0;
} else {
free(camHal);
free (device);
device = NULL;
}
} else {
free (device);
device = NULL;
}
}
}
}
*hw_device = (hw_device_t*)device;
return rc;
}