Camera service: Support for device state change notifications
Add AIDL method for device-wide physical state updates (such as
folding/unfolding), and wire it up to the new camera provider HAL call.
Also clean up camera provider startup sequence - devices were being enumerated before
the new lazy HAL interface pointers were set up, resulting in many repeated calls
to getService even for a non-lazy HAL.
Also add unit test for CameraProviderManager to verify its section of
the callpath, as well as tests to check that the provider HAL and
hardware service manager aren't queried more than expected during
initialization.
Test: atest cameraservice_test
Change-Id: I5ec60fd9d93b7a2fe4d1a5854fad720a972fe8ea
diff --git a/services/camera/libcameraservice/common/CameraProviderManager.cpp b/services/camera/libcameraservice/common/CameraProviderManager.cpp
index 3059b07..137ffea 100644
--- a/services/camera/libcameraservice/common/CameraProviderManager.cpp
+++ b/services/camera/libcameraservice/common/CameraProviderManager.cpp
@@ -77,6 +77,8 @@
}
mListener = listener;
mServiceProxy = proxy;
+ mDeviceState = static_cast<hardware::hidl_bitfield<provider::V2_5::DeviceState>>(
+ provider::V2_5::DeviceState::NORMAL);
// Registering will trigger notifications for all already-known providers
bool success = mServiceProxy->registerForNotifications(
@@ -280,6 +282,26 @@
return OK;
}
+status_t CameraProviderManager::notifyDeviceStateChange(
+ hardware::hidl_bitfield<provider::V2_5::DeviceState> newState) {
+ std::lock_guard<std::mutex> lock(mInterfaceMutex);
+ mDeviceState = newState;
+ status_t res = OK;
+ for (auto& provider : mProviders) {
+ ALOGV("%s: Notifying %s for new state 0x%" PRIx64,
+ __FUNCTION__, provider->mProviderName.c_str(), newState);
+ status_t singleRes = provider->notifyDeviceStateChange(mDeviceState);
+ if (singleRes != OK) {
+ ALOGE("%s: Unable to notify provider %s about device state change",
+ __FUNCTION__,
+ provider->mProviderName.c_str());
+ res = singleRes;
+ // continue to do the rest of the providers instead of returning now
+ }
+ }
+ return res;
+}
+
status_t CameraProviderManager::openSession(const std::string &id,
const sp<device::V3_2::ICameraDeviceCallback>& callback,
/*out*/
@@ -365,7 +387,7 @@
if (!kEnableLazyHal) {
return;
}
- ALOGI("Saving camera provider %s for camera device %s", provider->descriptor, cameraId.c_str());
+ ALOGV("Saving camera provider %s for camera device %s", provider->descriptor, cameraId.c_str());
std::lock_guard<std::mutex> lock(mProviderInterfaceMapLock);
std::unordered_map<std::string, sp<provider::V2_4::ICameraProvider>> *primaryMap, *alternateMap;
if (usageType == DeviceMode::TORCH) {
@@ -389,7 +411,7 @@
if (!kEnableLazyHal) {
return;
}
- ALOGI("Removing camera device %s", cameraId.c_str());
+ ALOGV("Removing camera device %s", cameraId.c_str());
std::unordered_map<std::string, sp<provider::V2_4::ICameraProvider>> *providerMap;
if (usageType == DeviceMode::TORCH) {
providerMap = &mTorchProviderByCameraId;
@@ -947,7 +969,7 @@
}
sp<ProviderInfo> providerInfo = new ProviderInfo(newProvider, this);
- status_t res = providerInfo->initialize(interface);
+ status_t res = providerInfo->initialize(interface, mDeviceState);
if (res != OK) {
return res;
}
@@ -1008,7 +1030,8 @@
}
status_t CameraProviderManager::ProviderInfo::initialize(
- sp<provider::V2_4::ICameraProvider>& interface) {
+ sp<provider::V2_4::ICameraProvider>& interface,
+ hardware::hidl_bitfield<provider::V2_5::DeviceState> currentDeviceState) {
status_t res = parseProviderName(mProviderName, &mType, &mId);
if (res != OK) {
ALOGE("%s: Invalid provider name, ignoring", __FUNCTION__);
@@ -1016,6 +1039,15 @@
}
ALOGI("Connecting to new camera provider: %s, isRemote? %d",
mProviderName.c_str(), interface->isRemote());
+
+ // Determine minor version
+ auto castResult = provider::V2_5::ICameraProvider::castFrom(interface);
+ if (castResult.isOk()) {
+ mMinorVersion = 5;
+ } else {
+ mMinorVersion = 4;
+ }
+
// cameraDeviceStatusChange callbacks may be called (and causing new devices added)
// before setCallback returns
hardware::Return<Status> status = interface->setCallback(this);
@@ -1040,6 +1072,24 @@
__FUNCTION__, mProviderName.c_str());
}
+ if (!kEnableLazyHal) {
+ // Save HAL reference indefinitely
+ mSavedInterface = interface;
+ } else {
+ mActiveInterface = interface;
+ }
+
+ ALOGV("%s: Setting device state for %s: 0x%" PRIx64,
+ __FUNCTION__, mProviderName.c_str(), mDeviceState);
+ notifyDeviceStateChange(currentDeviceState);
+
+ res = setUpVendorTags();
+ if (res != OK) {
+ ALOGE("%s: Unable to set up vendor tags from provider '%s'",
+ __FUNCTION__, mProviderName.c_str());
+ return res;
+ }
+
// Get initial list of camera devices, if any
std::vector<std::string> devices;
hardware::Return<void> ret = interface->getCameraIdList([&status, this, &devices](
@@ -1096,34 +1146,28 @@
}
}
- res = setUpVendorTags();
- if (res != OK) {
- ALOGE("%s: Unable to set up vendor tags from provider '%s'",
- __FUNCTION__, mProviderName.c_str());
- return res;
- }
-
ALOGI("Camera provider %s ready with %zu camera devices",
mProviderName.c_str(), mDevices.size());
mInitialized = true;
- if (!kEnableLazyHal) {
- // Save HAL reference indefinitely
- mSavedInterface = interface;
- }
return OK;
}
const sp<provider::V2_4::ICameraProvider>
CameraProviderManager::ProviderInfo::startProviderInterface() {
ATRACE_CALL();
- ALOGI("Request to start camera provider: %s", mProviderName.c_str());
+ ALOGV("Request to start camera provider: %s", mProviderName.c_str());
if (mSavedInterface != nullptr) {
return mSavedInterface;
}
+ if (!kEnableLazyHal) {
+ ALOGE("Bad provider state! Should not be here on a non-lazy HAL!");
+ return nullptr;
+ }
+
auto interface = mActiveInterface.promote();
if (interface == nullptr) {
- ALOGI("Could not promote, calling getService(%s)", mProviderName.c_str());
+ ALOGI("Camera HAL provider needs restart, calling getService(%s)", mProviderName.c_str());
interface = mManager->mServiceProxy->getService(mProviderName);
interface->setCallback(this);
hardware::Return<bool> linked = interface->linkToDeath(this, /*cookie*/ mId);
@@ -1136,9 +1180,22 @@
ALOGW("%s: Unable to link to provider '%s' death notifications",
__FUNCTION__, mProviderName.c_str());
}
+ // Send current device state
+ if (mMinorVersion >= 5) {
+ auto castResult = provider::V2_5::ICameraProvider::castFrom(interface);
+ if (castResult.isOk()) {
+ sp<provider::V2_5::ICameraProvider> interface_2_5 = castResult;
+ if (interface_2_5 != nullptr) {
+ ALOGV("%s: Initial device state for %s: 0x %" PRIx64,
+ __FUNCTION__, mProviderName.c_str(), mDeviceState);
+ interface_2_5->notifyDeviceStateChange(mDeviceState);
+ }
+ }
+ }
+
mActiveInterface = interface;
} else {
- ALOGI("Camera provider (%s) already in use. Re-using instance.", mProviderName.c_str());
+ ALOGV("Camera provider (%s) already in use. Re-using instance.", mProviderName.c_str());
}
return interface;
}
@@ -1223,8 +1280,10 @@
}
status_t CameraProviderManager::ProviderInfo::dump(int fd, const Vector<String16>&) const {
- dprintf(fd, "== Camera Provider HAL %s (v2.4, %s) static info: %zu devices: ==\n",
- mProviderName.c_str(), mIsRemote ? "remote" : "passthrough",
+ dprintf(fd, "== Camera Provider HAL %s (v2.%d, %s) static info: %zu devices: ==\n",
+ mProviderName.c_str(),
+ mMinorVersion,
+ mIsRemote ? "remote" : "passthrough",
mDevices.size());
for (auto& device : mDevices) {
@@ -1423,6 +1482,26 @@
return OK;
}
+status_t CameraProviderManager::ProviderInfo::notifyDeviceStateChange(
+ hardware::hidl_bitfield<provider::V2_5::DeviceState> newDeviceState) {
+ mDeviceState = newDeviceState;
+ if (mMinorVersion >= 5) {
+ // Check if the provider is currently active - not going to start it up for this notification
+ auto interface = mSavedInterface != nullptr ? mSavedInterface : mActiveInterface.promote();
+ if (interface != nullptr) {
+ // Send current device state
+ auto castResult = provider::V2_5::ICameraProvider::castFrom(interface);
+ if (castResult.isOk()) {
+ sp<provider::V2_5::ICameraProvider> interface_2_5 = castResult;
+ if (interface_2_5 != nullptr) {
+ interface_2_5->notifyDeviceStateChange(mDeviceState);
+ }
+ }
+ }
+ }
+ return OK;
+}
+
template<class DeviceInfoT>
std::unique_ptr<CameraProviderManager::ProviderInfo::DeviceInfo>
CameraProviderManager::ProviderInfo::initializeDeviceInfo(
diff --git a/services/camera/libcameraservice/common/CameraProviderManager.h b/services/camera/libcameraservice/common/CameraProviderManager.h
index fbd7d2e..78007ff 100644
--- a/services/camera/libcameraservice/common/CameraProviderManager.h
+++ b/services/camera/libcameraservice/common/CameraProviderManager.h
@@ -28,9 +28,8 @@
#include <camera/CameraBase.h>
#include <utils/Errors.h>
#include <android/hardware/camera/common/1.0/types.h>
-#include <android/hardware/camera/provider/2.4/ICameraProvider.h>
+#include <android/hardware/camera/provider/2.5/ICameraProvider.h>
#include <android/hardware/camera/device/3.4/ICameraDeviceSession.h>
-//#include <android/hardware/camera/provider/2.4/ICameraProviderCallbacks.h>
#include <android/hidl/manager/1.0/IServiceNotification.h>
#include <camera/VendorTagDescriptor.h>
@@ -206,6 +205,12 @@
status_t setUpVendorTags();
/**
+ * Inform registered providers about a device state change, such as folding or unfolding
+ */
+ status_t notifyDeviceStateChange(
+ android::hardware::hidl_bitfield<hardware::camera::provider::V2_5::DeviceState> newState);
+
+ /**
* Open an active session to a camera device.
*
* This fully powers on the camera device hardware, and returns a handle to a
@@ -276,6 +281,9 @@
wp<StatusListener> mListener;
ServiceInteractionProxy* mServiceProxy;
+ // Current overall Android device physical status
+ android::hardware::hidl_bitfield<hardware::camera::provider::V2_5::DeviceState> mDeviceState;
+
// mProviderLifecycleLock is locked during onRegistration and removeProvider
mutable std::mutex mProviderLifecycleLock;
@@ -302,10 +310,14 @@
{
const std::string mProviderName;
const metadata_vendor_id_t mProviderTagid;
+ int mMinorVersion;
sp<VendorTagDescriptor> mVendorTagDescriptor;
bool mSetTorchModeSupported;
bool mIsRemote;
+ // Current overall Android device physical status
+ hardware::hidl_bitfield<hardware::camera::provider::V2_5::DeviceState> mDeviceState;
+
// This pointer is used to keep a reference to the ICameraProvider that was last accessed.
wp<hardware::camera::provider::V2_4::ICameraProvider> mActiveInterface;
@@ -315,7 +327,9 @@
CameraProviderManager *manager);
~ProviderInfo();
- status_t initialize(sp<hardware::camera::provider::V2_4::ICameraProvider>& interface);
+ status_t initialize(sp<hardware::camera::provider::V2_4::ICameraProvider>& interface,
+ hardware::hidl_bitfield<hardware::camera::provider::V2_5::DeviceState>
+ currentDeviceState);
const sp<hardware::camera::provider::V2_4::ICameraProvider> startProviderInterface();
@@ -344,6 +358,13 @@
*/
status_t setUpVendorTags();
+ /**
+ * Notify provider about top-level device physical state changes
+ */
+ status_t notifyDeviceStateChange(
+ hardware::hidl_bitfield<hardware::camera::provider::V2_5::DeviceState>
+ newDeviceState);
+
// Basic device information, common to all camera devices
struct DeviceInfo {
const std::string mName; // Full instance name