mtk android8.1上，camera主摄的调用流程
mtk的摄像头hal模块，跟android原生的有很大的出入，基本上是自己重写了一套，不熟悉的话，查看起来相当的复杂。特别是在8.0以后，mtk的hal，既使用了hidl接口，又没有完全按照hidl的标准来，底层仍是他们自己的一套流程。如果按google的流程来看，是别想弄明白的。前段时间，我调了下mtk的camera，大致弄清了它们的流程。随手记了点笔记，写得比较散乱，懒得整理了，大家能看明白就
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mtk的摄像头hal模块，跟android原生的有很大的出入，基本上是自己重写了一套，不熟悉的话，查看起来相当的复杂。特别是在8.0以后，mtk的hal，既使用了hidl接口，又没有完全按照hidl的标准来，底层仍是他们自己的一套流程。如果按google的流程来看，是别想弄明白的。
前段时间，我调了下mtk的camera，大致弄清了它们的流程。随手记了点笔记，写得比较散乱，懒得整理了，大家能看明白就行。
mtk的camera hal层代码都在这个目录vendor\mediatek\proprietary\hardware\mtkcam\legacy。下面先以预览为例，理清一下预览的流程：
预览::
status_t CameraClient.cpp::startPreview() {
LOG1("startPreview (pid %d)", getCallingPid());
return startCameraMode(CAMERA_PREVIEW_MODE);
}
status_t CameraClient.cpp::startCameraMode(camera_mode mode) {
Mutex::Autolock lock(mLock);
status_t result = checkPidAndHardware();
if (result != NO_ERROR) return result;
switch(mode) {
case CAMERA_PREVIEW_MODE:
return startPreviewMode();
case CAMERA_RECORDING_MODE:
if (mSurface == 0 && mPreviewWindow == 0) {
ALOGE("mSurface or mPreviewWindow must be set before startRecordingMode.");
return INVALID_OPERATION;
}
return startRecordingMode();
default:
return UNKNOWN_ERROR;
}
}
status_t CameraClient.cpp::startPreviewMode() {
status_t result = NO_ERROR;
if (mHardware->previewEnabled()) {
return NO_ERROR;
}
if (mPreviewWindow != 0) {
mHardware->setPreviewScalingMode(
NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW);
mHardware->setPreviewTransform(mOrientation);
}
mHardware->setPreviewWindow(mPreviewWindow);
result = mHardware->startPreview();
if (result == NO_ERROR) {
sCameraService->updateProxyDeviceState(
hardware::ICameraServiceProxy::CAMERA_STATE_ACTIVE,
mCameraIdStr, mCameraFacing, mClientPackageName);
}
return result;
}
CameraHardwareInterface.cpp::startPreview()
{
ALOGV("%s(%s)", __FUNCTION__, mName.string());
if (CC_LIKELY(mHidlDevice != nullptr)) {
return CameraProviderManager::mapToStatusT(
mHidlDevice->startPreview());
}
return INVALID_OPERATION;
}
//中间通过CameraProviderManager，
//经过了hidl接口，调到了vendor\mediatek\proprietary\hardware\mtkcam\legacy\
//main\hal\device\1.x\device\CameraDevice.cpp下的startPreview
CameraDevice.cpp::startPreview()
{
....
return mpDevice->startPreview();
....
}
CameraDevice1Base.cpp::startPreview()
{
....
( OK != (status = enableDisplayClient()) )
{
goto lbExit;
}
....
}
CameraDevice1Base.cpp::enableDisplayClient()
{
......
if ( ! queryPreviewSize(previewSize.width, previewSize.height) )
{
status = DEAD_OBJECT;
goto lbExit;
}
if(mpParamsMgr->getIfFirstPreviewFrameAsBlack())
{
mpDisplayClient->setFirstFrameBlack();
mpParamsMgr->set(MtkCameraParameters::KEY_FIRST_PREVIEW_FRAME_BLACK, 0);
}
if ( ! mpDisplayClient->enableDisplay(previewSize.width, previewSize.height, queryDisplayBufCount(), mpCamAdapter) )
{
status = INVALID_OPERATION;
goto lbExit;
}
......
}
DisplayClient.cpp::enableDisplay()
{
....
mpDisplayThread->postCommand(Command(Command::eID_WAKEUP));
....
}
DisplayThread.cpp::postCommand
{
....
//rCmd为eID_WAKEUP
mCmdQue.push_back(rCmd);
mCmdQueCond.broadcast();
....
}
DisplayThread.cpp::threadLoop()
{
Command cmd;
if ( getCommand(cmd) )
{
switch (cmd.eId)
{
case Command::eID_EXIT:
MY_LOGD("Command::%s", cmd.name());
break;
//
case Command::eID_WAKEUP:
default:
if ( mpThreadHandler != 0 )
{
mpThreadHandler->onThreadLoop(cmd);
}
break;
}
}
return true;
}
DisplayThread.cpp::getCommand(Command& rCmd)
{
....
rCmd = *mCmdQue.begin();
....
}
DisplayClient.BufOps.cpp::onThreadLoop(Command const& /*rCmd*/)
{
....
while ( 1 )
{
....
waitAndHandleReturnBuffers(pImgBufQueue);
....
}
....
}
DisplayClient.BufOps.cpp::waitAndHandleReturnBuffers(sp<IImgBufQueue>const& rpBufQueue)
{
....
ret = handleReturnBuffers(vQueNode);
....
}
DisplayClient.BufOps.cpp::handleReturnBuffers(Vector<ImgBufQueNode>const& rvQueNode)
{
....
//这个pStreamImgBuf，就是最终显示在屏幕上的数据。我们要加时间水印等，就可以在这条
//语句的前面加
enquePrvOps(pStreamImgBuf);
....
}
***********************************************************************************************************
打开摄像头的流程::
1.) vendor\mediatek\proprietary\hardware\mtkcam\legacy\main\hal\devicemgr\depend\instance.cpp
HIDL_FETCH_ICameraProvider(const char* name)
{
......
return createICameraProvider_V2_4(name, getCameraDeviceManager());
}
2.) vendor\mediatek\proprietary\hardware\mtkcam\legacy\main\hal\devicemgr\provider\2.4\CameraProviderImpl.cpp
createICameraProvider_V2_4(const char* providerName, NSCam::ICameraDeviceManager* manager)
{
......
auto provider = new CameraProviderImpl(providerName, manager);
if ( ! provider ) {
MY_LOGE("cannot allocate camera provider %s", providerName);
return nullptr;
}
//
if ( ! provider->initialize() ) {
MY_LOGE("camera provider %s initialize failed", providerName);
delete provider;
provider = nullptr;
}
......
}
**********************************************************************************************************************
1.0)\frameworks\av\services\camera\libcameraservice\CameraService.cpp
status_t CameraService::enumerateProviders() {
......
mCameraProviderManager = new CameraProviderManager();
res = mCameraProviderManager->initialize(this);
......
}
1.0.1)\frameworks\av\services\camera\libcameraservice\CameraService.cpp
template<class CALLBACK, class CLIENT>
Status CameraService::connectHelper(const sp<CALLBACK>& cameraCb, const String8& cameraId,
int halVersion, const String16& clientPackageName, int clientUid, int clientPid,
apiLevel effectiveApiLevel, bool legacyMode, bool shimUpdateOnly,
/*out*/sp<CLIENT>& device) {
......
sp<BasicClient> tmp = nullptr;
if(!(ret = makeClient(this, cameraCb, clientPackageName, cameraId, facing, clientPid,
clientUid, getpid(), legacyMode, halVersion, deviceVersion, effectiveApiLevel,
/*out*/&tmp)).isOk()) {
return ret;
}
client = static_cast<CLIENT*>(tmp.get());
//这里将刚刚在1.0步初始化好的mCameraProviderManager，传到了CameraClient里面
err = client->initialize(mCameraProviderManager);
......
}
1.0.2）frameworks\av\services\camera\libcameraservice\api1\CameraClient.cpp
status_t CameraClient::initialize(sp<CameraProviderManager> manager) {
......
//这里又一步步的将CameraService里传进来的CameraProviderManager，传给了CameraHardwareInterface
mHardware = new CameraHardwareInterface(camera_device_name);
res = mHardware->initialize(manager);
......
}
1.0.3）\frameworks\av\services\camera\libcameraservice\device1\CameraHardwareInterface.cpp
status_t CameraHardwareInterface::initialize(sp<CameraProviderManager> manager) {
//这里的mHidlDevice，是sp<hardware::camera::device::V1_0::ICameraDevice>这个类型。这里一步步的绕，
//最终将在第6步，将vendor\mediatek\proprietary\hardware\mtkcam\legacy\main\hal\device\1.x\device\CameraDevice.cpp
//这个里的接口，都给绑到了mHidlDevice上。然后在CameraHardwareInterface.cpp里，就可以通过mHidlDevice来直接操作
//mtkcam\legacy\main\hal\device\1.x\device\CameraDevice.cpp这个里面的值了。
status_t ret = manager->openSession(mName.string(), this, &mHidlDevice);
return ret;
}
1.0.4)frameworks\av\services\camera\libcameraservice\common\CameraProviderManager.cpp
status_t CameraProviderManager::openSession(const std::string &id,
const sp<hardware::camera::device::V1_0::ICameraDeviceCallback>& callback,
/*out*/
sp<hardware::camera::device::V1_0::ICameraDevice> *session) {
ALOGD("CameraProviderManager::openSession 2 start, id is %s", id.c_str());
std::lock_guard<std::mutex> lock(mInterfaceMutex);
auto deviceInfo = findDeviceInfoLocked(id,
if (deviceInfo == nullptr) return NAME_NOT_FOUND;
auto *deviceInfo1 = static_cast<ProviderInfo::DeviceInfo1*>(deviceInfo);
hardware::Return<Status> status = deviceInfo1->mInterface->open(callback);
if (status == Status::OK) {
*session = deviceInfo1->mInterface;
}
return mapToStatusT(status);
}
1.1)frameworks\av\services\camera\libcameraservice\common\CameraProviderManager.cpp
status_t CameraProviderManager::initialize(wp<CameraProviderManager::StatusListener> listener,
ServiceInteractionProxy* proxy) {
......
addProviderLocked(kLegacyProviderName, /*expected*/ false);
......
}
1.2)frameworks\av\services\camera\libcameraservice\common\CameraProviderManager.cpp
status_t CameraProviderManager::addProviderLocked(const std::string& newProvider, bool expected) {
......
sp<ProviderInfo> providerInfo =
new ProviderInfo(newProvider, interface, this);
status_t res = providerInfo->initialize();
......
}
1.3)frameworks\av\services\camera\libcameraservice\common\CameraProviderManager.cpp
status_t CameraProviderManager::ProviderInfo::initialize() {
......
sp<StatusListener> listener = mManager->getStatusListener();
for (auto& device : devices) {
std::string id;
status_t res = addDevice(device,
hardware::camera::common::V1_0::CameraDeviceStatus::PRESENT, &id);
}
......
}
1.4)frameworks\av\services\camera\libcameraservice\common\CameraProviderManager.cpp
status_t CameraProviderManager::ProviderInfo::addDevice(const std::string& name,
CameraDeviceStatus initialStatus, /*out*/ std::string* parsedId) {
......
case 1:
deviceInfo = initializeDeviceInfo<DeviceInfo1>(name, mProviderTagid,
id, minor);
break;
case 3:
deviceInfo = initializeDeviceInfo<DeviceInfo3>(name, mProviderTagid,
id, minor);
break;
}
......
}
1.5)
frameworks\av\services\camera\libcameraservice\common\CameraProviderManager.cpp
template<class DeviceInfoT>
std::unique_ptr<CameraProviderManager::ProviderInfo::DeviceInfo>
CameraProviderManager::ProviderInfo::initializeDeviceInfo(
const std::string &name, const metadata_vendor_id_t tagId,
const std::string &id, uint16_t minorVersion) const {
......
auto cameraInterface =
getDeviceInterface<typename DeviceInfoT::InterfaceT>(name);
......
return std::unique_ptr<DeviceInfo>(
new DeviceInfoT(name, tagId, id, minorVersion, resourceCost,
cameraInterface));
......
}
2.1)
frameworks\av\services\camera\libcameraservice\common\CameraProviderManager.cpp
template<>
sp<device::V1_0::ICameraDevice>
CameraProviderManager::ProviderInfo::getDeviceInterface
<device::V1_0::ICameraDevice>(const std::string &name) const {
Status status;
sp<device::V1_0::ICameraDevice> cameraInterface;
hardware::Return<void> ret;
ret = mInterface->getCameraDeviceInterface_V1_x(name, [&status, &cameraInterface](
Status s, sp<device::V1_0::ICameraDevice> interface) {
status = s;
cameraInterface = interface;
});
......
return cameraInterface;
}
3.) vendor\mediatek\proprietary\hardware\mtkcam\legacy\main\hal\devicemgr\provider\2.4\CameraProviderImpl.cpp
******************************************************************************/
Return<void>
CameraProviderImpl::
getCameraDeviceInterface_V1_x(
const hidl_string& cameraDeviceName,
getCameraDeviceInterface_V1_x_cb _hidl_cb)
{
MY_LOGD("getCameraDeviceInterface_V1_x start");
getCameraDeviceInterface<::android::hardware::camera::device::V1_0::ICameraDevice>(cameraDeviceName, _hidl_cb);
return Void();
}
4.) vendor\mediatek\proprietary\hardware\mtkcam\legacy\main\hal\devicemgr\provider\2.4\CameraProviderImpl.cpp
getCameraDeviceInterface(
const hidl_string& cameraDeviceName,
InterfaceCallbackT _hidl_cb
)
{
......
auto status = mManager->getDeviceInterface(cameraDeviceName, pBaseDevice);
......
}
5.)vendor\mediatek\proprietary\hardware\mtkcam\legacy\main\hal\devicemgr\CameraDeviceManagerBase.cpp
auto
CameraDeviceManagerBase::
getDeviceInterface(
const std::string& deviceName,
::android::sp<IBase_t>& rpDevice
) -> ::android::status_t
{
......
status_t status = pDevice->getDeviceInterfaceBase(rpDevice);
......
}
6.)vendor\mediatek\proprietary\hardware\mtkcam\legacy\main\hal\device\1.x\device\CameraDevice.cpp
auto
CameraDevice::
getDeviceInterfaceBase(
sp<IBase>& rpDevice
) const -> ::android::status_t
{
rpDevice = const_cast<IBase*>(
static_cast<const IBase*>(this));
return android::OK;
}
//上面这里将CameraDevice这个类作为了一个interface，
//传给了rpDevice。也就是上面从frameworks\av\services\camera\libcameraservice\
//common\CameraProviderManager.cpp::getDeviceInterface
//里取到的接口，就是这个vendor\mediatek\proprietary\hardware\mtkcam\legacy\main\
//hal\device\1.x\device\CameraDevice.cpp类里的所有接口。
//综上所叙，CameraDevice是最关键的一个类，它是用hal层和驱动层的代码。
//它的open函数，应该就能一步步的调到打开camera驱动的地方。
//vendor/mediatek/proprietary/hardware/mtkcam/legacy/main/hal/device/1.x/
//device/CameraDevice.cpp
CameraDevice.cpp::open(const sp<ICameraDeviceCallback>& callback)
{
mpDevice = CameraDevice1Base::createCameraDevice(mDeviceManager,
mStaticDeviceInfo->mInstanceName,
mInstanceId);
if( !mpDevice.get() ){
MY_LOGE("Create CameraDevice1Base failed!");
return Status::INTERNAL_ERROR;
}
return mpDevice->open(callback);
}
上面这个CameraDevice.cpp::open,可以分两部份来讲,一部份是CameraDevice1Base::createCameraDevice, 一部份是mpDevice->open.咱们先讲下createCameraDevice.
##########################################################################################################################################################
1.1)vendor\mediatek\proprietary\hardware\mtkcam\legacy\main\hal\device\1.x\device\CameraDevice1Factory.cpp
CameraDevice1Base*
CameraDevice1Base::
createCameraDevice(
ICameraDeviceManager* deviceManager,
std::string instanceName,
int32_t instanceId
)
{
......
pDevice = createSpecificCameraDevice1(mClientAppMode,
deviceManager,
instanceName,
instanceId);
......
}
1.2)vendor\mediatek\proprietary\hardware\mtkcam\legacy\main\hal\device\1.x\device\CameraDevice1Factory.cpp
static
CameraDevice1Base*
createSpecificCameraDevice1(
String8 const s8ClientAppMode,
ICameraDeviceManager* deviceManager,
std::string instanceName,
int32_t instanceId
)
{
CameraDevice1Base* pdev = NULL;
String8 s8CamDeviceInstFactory;
MY_LOGD("createSpecificCameraDevice1 instanceName is %s", instanceName.c_str());
//[TODO] check the library name
String8 const s8LibPath = String8::format("libmtkcam_device1.so");
void *handle = ::dlopen(s8LibPath.string(), RTLD_GLOBAL);
......
void* pCreateInstance = ::dlsym(handle, s8CamDeviceInstFactory.string());
......
}
1.3)vendor\mediatek\proprietary\hardware\mtkcam\legacy\main\hal\device\1.x\device\depend\DefaultCameraDevice1.cpp
NSCam::CameraDevice1Base*
createCameraDevice1_Default(
ICameraDeviceManager* deviceManager,
std::string instanceName,
int32_t instanceId,
android::String8 const& rDevName
)
{
return new DefaultCameraDevice1(deviceManager
, instanceName
, instanceId
, rDevName);
}
1.4)vendor\mediatek\proprietary\hardware\mtkcam\legacy\main\hal\device\1.x\device\depend\DefaultCameraDevice1.cpp
status_t
DefaultCameraDevice1::
onOpenLocked()
{
......
if ( OK != CameraDevice1Base::onOpenLocked())
{
MY_LOGE("CameraDevice1Base onOpenLocked failed");
setThreadPriority(policy,priority);
profile.print("");
return NO_INIT;
}
......
}
再讲下加载camera的地方:
1.)vendor\mediatek\proprietary\hardware\mtkcam\legacy\main\hal\device\1.x\device\depend\DefaultCameraDevice1.cpp
void*
DefaultCameraDevice1::
doThreadSensorOn(void* arg)
{
::prctl(PR_SET_NAME,"initCamdevice", 0, 0, 0);
DefaultCameraDevice1* pSelf = reinterpret_cast<DefaultCameraDevice1*>(arg);
pSelf->mRet = pSelf->powerOnSensor();
pthread_exit(NULL);
return NULL;
}
2.)
vendor\mediatek\proprietary\hardware\mtkcam\legacy\main\hal\device\1.x\device\depend\DefaultCameraDevice1.cpp
bool
DefaultCameraDevice1::
powerOnSensor()
{
......
if( !mpHalSensor->powerOn(USER_NAME, 1, &sensorIdx) )
{
MY_LOGE("Sensor power on failed: %d", sensorIdx);
AEE_ASSERT("\nCRDISPATCH_KEY:MtkCam/Cam1Device:Sensor power on failed");
return false;
}
......
}
3.)vendor\mediatek\proprietary\hardware\mtkcam\legacy\platform\mt6580\hal\sensor\HalSensor.cpp
MBOOL
HalSensor::
onCreate(
SortedVector<MUINT>const& vSensorIndex
)
{
......
mpSeninfDrv = SeninfDrv::createInstance();
......
}
4.)真正打开camera的地方是在vendor\mediatek\proprietary\hardware\mtkcam\legacy\platform\mt6580\hal\sensor\seninf_drv.cpp::int SeninfDrvImp::init()
{
/*
#define SENSOR_DEV_NAME "/dev/kd_camera_hw"
#define ISP_DEV_NAME "/dev/camera-isp"
*/
......
// Open isp driver
mfd = open(ISP_DEV_NAME, O_RDWR);
if (mfd < 0) {
LOG_ERR("error open kernel driver, %d, %s\n", errno, strerror(errno));
return -1;
}
//Open sensor driver
m_fdSensor = open(SENSOR_DEV_NAME, O_RDWR);
if (m_fdSensor < 0) {
LOG_ERR("[init]: error opening %s \n", strerror(errno));
return -13;
}
......
}
######################################################################################################################
CameraDevice1Base.cpp::open(const sp<ICameraDeviceCallback>& callback)
{
......
status = mDeviceManager->startOpenDevice(instanceName);
......
}
CameraDeviceManagerBase.cpp::startOpenDevice(
const std::string& deviceName
) -> ::android::status_t
{
....
status = enumerateDevicesLocked();
....
}
CameraDeviceManagerBase_camera.cpp::enumerateDevicesLocked() -> ::android::status_t
{
status_t status = OK;
{
Utils::CamProfile _profile(__FUNCTION__, "CameraDeviceManagerBase");
status = onEnumerateDevicesLocked();
_profile.print("");
}
logLocked();
return status;
}
CameraDeviceManagerImpl.cpp::onEnumerateDevicesLocked() -> ::android::status_t
{
....
#if '1'==MTKCAM_HAVE_METADATAPROVIDER
//真正的Camera是在IMetadataProvider这里创建的.
pMetadataProvider = IMetadataProvider::create(instanceId);
NSMetadataProviderManager::add(instanceId, pMetadataProvider.get());
MY_LOGD("[0x%02zx] IMetadataProvider:%p sensor:%s", instanceId, pMetadataProvider.get(), pHalSensorList->queryDriverName(instanceId));
#endif
//
pPhysDevice->mMetadataProvider = pMetadataProvider;
pPhysDevice->mSensorName = pHalSensorList->queryDriverName(instanceId);
pPhysDevice->mInstanceId = instanceId;
pPhysDevice->mFacing = pMetadataProvider->getDeviceFacing();
pPhysDevice->mWantedOrientation = pMetadataProvider->getDeviceWantedOrientation();
pPhysDevice->mSetupOrientation = pMetadataProvider->getDeviceSetupOrientation();
pPhysDevice->mHasFlashUnit = pMetadataProvider->getDeviceHasFlashLight();
//
addVirtualDevicesLocked(pPhysDevice.get());
....
}
metadataprovider定义在vendor\mediatek\proprietary\hardware\mtkcam\legacy\platform\mt6580\metadata\metadataprovider\MetadataProvider.cpp这个文件里
IMetadataProvider*IMetadataProvider::create(
int32_t const i4OpenId
)
{
MetadataProvider* p = new MetadataProvider(i4OpenId);
if ( ! p )
{
MY_LOGE("No Memory");
return NULL;
}
//
if ( OK != p->onCreate() )
{
MY_LOGE("onCreate");
delete p;
return NULL;
}
//
return p;
}
MetadataProvider::MetadataProvider(int32_t const i4OpenId)
: mpStaticCharacteristics(NULL)
, mpHALMetadata()
{
int32_t sensorType = IHalSensorList::get()->queryType(i4OpenId);
const char* sensorDrvName = IHalSensorList::get()->queryDriverName(i4OpenId);
//
mInfo = Info(i4OpenId, sensorType, sensorDrvName);
//
showCustInfo();
}
上面将camera打开后,下面用这个打开的物理camera里取出来的参数,构建一个虚拟的cameraDevice,
后续的操作都是对这个虚拟的cameraDevice操作的
CameraDeviceManagerBase_camera.cpp::addVirtualDevicesLocked(PhysEnumDevice* pPhyDevice) -> void
{
....
uint32_t const deviceVersion = pMetadataProvider->getDeviceVersion();
uint32_t const majorDeviceVersion = queryMajorDeviceVersion(deviceVersion);
switch (majorDeviceVersion)
{
case 1:{//Enumerating device 1.x + 3.x(latest)
create_and_add_virtual_device(1);
if ( mSupportLatestDevice ) {
create_and_add_virtual_device(3);
}
}break;
case 3:{//Enumerating device 3.x + 1.x(legacy)
create_and_add_virtual_device(3);
if ( mSupportLegacyDevice ) {
create_and_add_virtual_device(1);
}
}break;
default:{
MY_LOGW(
"unsupported device instance id:%d deviceVersion:0x%x majorDeviceVersion:%d",
instanceId, deviceVersion, majorDeviceVersion);
}break;
}
....
}
CameraDeviceManagerBase_camera.cpp::addVirtualDevicesLocked(PhysEnumDevice* pPhyDevice) -> void
{
....
auto create_and_add_virtual_device = [&](uint32_t majorVersion){
auto create_device = mVirtEnumDeviceFactoryMap[majorVersion].mCreateVirtualCameraDevice;
if ( create_device == nullptr ) {
CAM_LOGE("The symbole createVirtualCameraDevice for device version %d does not exist!!!", majorVersion);
return;
}
CreateVirtualCameraDeviceParams param = {
.instanceId = static_cast<int32_t>(instanceId),
.deviceType = mType.c_str(),
.pMetadataProvider = pMetadataProvider.get(),
.pDeviceManager = this,
};
auto new_device = create_device(¶m);
add_virtual_device(new_device);
};
....
}
CameraDevice.cpp::createVirtualCameraDevice(CreateVirtualCameraDeviceParams* params)
{
CameraDevice* pDevice = new CameraDevice(
params->pDeviceManager,
params->pMetadataProvider,
params->deviceType,
params->instanceId);
return pDevice;
}
CameraDevice.cpp::CameraDevice(
ICameraDeviceManager* deviceManager,
IMetadataProvider* metadataProvider,
char const* deviceType,
int32_t instanceId
)
: mDeviceManager(deviceManager)
, mStaticDeviceInfo(nullptr)
, mMetadataProvider(metadataProvider)
, mDeviceType(deviceType)
, mInstanceId(instanceId)
{
MY_LOGD("ENTRY: CameraDevice contruction");
mStaticDeviceInfo = std::make_shared<Info>();
if (mStaticDeviceInfo != nullptr) {
mStaticDeviceInfo->mInstanceName = String8::format("device@%u.%u/%s/%d", kMajorDeviceVersion, kMinorDeviceVersion, deviceType, instanceId).string();
mStaticDeviceInfo->mInstanceId = instanceId;
mStaticDeviceInfo->mMajorVersion = kMajorDeviceVersion;
mStaticDeviceInfo->mMinorVersion = kMinorDeviceVersion;
mStaticDeviceInfo->mHasFlashUnit = metadataProvider->getDeviceHasFlashLight();
}
}
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