Camera: Add support for torch strength control.
This change consists of support to control flashunit brightness level
and getting the current brightness level for the flash unit associated
with camera device.
Test: Flashlight CTS
Bug: 200174275
Change-Id: I7f0b4c826e6ccef157ec22a3b3b8cf75a6b2152d
diff --git a/services/camera/libcameraservice/common/CameraProviderManager.cpp b/services/camera/libcameraservice/common/CameraProviderManager.cpp
index 0cce2ca..d37d717 100644
--- a/services/camera/libcameraservice/common/CameraProviderManager.cpp
+++ b/services/camera/libcameraservice/common/CameraProviderManager.cpp
@@ -20,7 +20,7 @@
#include "CameraProviderManager.h"
-#include <android/hardware/camera/device/3.7/ICameraDevice.h>
+#include <android/hardware/camera/device/3.8/ICameraDevice.h>
#include <algorithm>
#include <chrono>
@@ -307,6 +307,50 @@
return OK;
}
+status_t CameraProviderManager::getTorchStrengthLevel(const std::string &id,
+ int32_t* torchStrength /*out*/) {
+ std::lock_guard<std::mutex> lock(mInterfaceMutex);
+
+ auto deviceInfo = findDeviceInfoLocked(id);
+ if (deviceInfo == nullptr) return NAME_NOT_FOUND;
+
+ return deviceInfo->getTorchStrengthLevel(torchStrength);
+}
+
+status_t CameraProviderManager::turnOnTorchWithStrengthLevel(const std::string &id,
+ int32_t torchStrength) {
+ std::lock_guard<std::mutex> lock(mInterfaceMutex);
+
+ auto deviceInfo = findDeviceInfoLocked(id);
+ if (deviceInfo == nullptr) return NAME_NOT_FOUND;
+
+ return deviceInfo->turnOnTorchWithStrengthLevel(torchStrength);
+}
+
+bool CameraProviderManager::shouldSkipTorchStrengthUpdate(const std::string &id,
+ int32_t torchStrength) const {
+ std::lock_guard<std::mutex> lock(mInterfaceMutex);
+
+ auto deviceInfo = findDeviceInfoLocked(id);
+ if (deviceInfo == nullptr) return NAME_NOT_FOUND;
+
+ if (deviceInfo->mTorchStrengthLevel == torchStrength) {
+ ALOGV("%s: Skipping torch strength level updates prev_level: %d, new_level: %d",
+ __FUNCTION__, deviceInfo->mTorchStrengthLevel, torchStrength);
+ return true;
+ }
+ return false;
+}
+
+int32_t CameraProviderManager::getTorchDefaultStrengthLevel(const std::string &id) const {
+ std::lock_guard<std::mutex> lock(mInterfaceMutex);
+
+ auto deviceInfo = findDeviceInfoLocked(id);
+ if (deviceInfo == nullptr) return NAME_NOT_FOUND;
+
+ return deviceInfo->mTorchDefaultStrengthLevel;
+}
+
bool CameraProviderManager::supportSetTorchMode(const std::string &id) const {
std::lock_guard<std::mutex> lock(mInterfaceMutex);
for (auto& provider : mProviders) {
@@ -2385,6 +2429,22 @@
mHasFlashUnit = false;
}
+ camera_metadata_entry entry =
+ mCameraCharacteristics.find(ANDROID_FLASH_INFO_STRENGTH_DEFAULT_LEVEL);
+ if (entry.count == 1) {
+ mTorchDefaultStrengthLevel = entry.data.i32[0];
+ } else {
+ mTorchDefaultStrengthLevel = 0;
+ }
+
+ entry = mCameraCharacteristics.find(ANDROID_FLASH_INFO_STRENGTH_MAXIMUM_LEVEL);
+ if (entry.count == 1) {
+ mTorchMaximumStrengthLevel = entry.data.i32[0];
+ } else {
+ mTorchMaximumStrengthLevel = 0;
+ }
+
+ mTorchStrengthLevel = 0;
queryPhysicalCameraIds();
// Get physical camera characteristics if applicable
@@ -2468,6 +2528,80 @@
return setTorchModeForDevice<InterfaceT>(enabled);
}
+status_t CameraProviderManager::ProviderInfo::DeviceInfo3::turnOnTorchWithStrengthLevel(
+ int32_t torchStrength) {
+ const sp<CameraProviderManager::ProviderInfo::DeviceInfo3::InterfaceT> interface =
+ startDeviceInterface<CameraProviderManager::ProviderInfo::DeviceInfo3::InterfaceT>();
+ if (interface == nullptr) {
+ return DEAD_OBJECT;
+ }
+ sp<hardware::camera::device::V3_8::ICameraDevice> interface_3_8 = nullptr;
+ auto castResult_3_8 = device::V3_8::ICameraDevice::castFrom(interface);
+ if (castResult_3_8.isOk()) {
+ interface_3_8 = castResult_3_8;
+ }
+
+ if (interface_3_8 == nullptr) {
+ return INVALID_OPERATION;
+ }
+
+ Status s = interface_3_8->turnOnTorchWithStrengthLevel(torchStrength);
+ if (s == Status::OK) {
+ mTorchStrengthLevel = torchStrength;
+ }
+ return mapToStatusT(s);
+}
+
+status_t CameraProviderManager::ProviderInfo::DeviceInfo3::getTorchStrengthLevel(
+ int32_t *torchStrength) {
+ if (torchStrength == nullptr) {
+ return BAD_VALUE;
+ }
+ const sp<CameraProviderManager::ProviderInfo::DeviceInfo3::InterfaceT> interface =
+ startDeviceInterface<CameraProviderManager::ProviderInfo::DeviceInfo3::InterfaceT>();
+ if (interface == nullptr) {
+ return DEAD_OBJECT;
+ }
+ auto castResult_3_8 = device::V3_8::ICameraDevice::castFrom(interface);
+ sp<hardware::camera::device::V3_8::ICameraDevice> interface_3_8 = nullptr;
+ if (castResult_3_8.isOk()) {
+ interface_3_8 = castResult_3_8;
+ }
+
+ if (interface_3_8 == nullptr) {
+ return INVALID_OPERATION;
+ }
+
+ Status callStatus;
+ status_t res;
+ hardware::Return<void> ret = interface_3_8->getTorchStrengthLevel([&callStatus, &torchStrength]
+ (Status status, const int32_t& torchStrengthLevel) {
+ callStatus = status;
+ if (status == Status::OK) {
+ *torchStrength = torchStrengthLevel;
+ } });
+
+ if (ret.isOk()) {
+ switch (callStatus) {
+ case Status::OK:
+ // Expected case, do nothing.
+ res = OK;
+ break;
+ case Status::METHOD_NOT_SUPPORTED:
+ res = INVALID_OPERATION;
+ break;
+ default:
+ ALOGE("%s: Get torch strength level failed: %d", __FUNCTION__, callStatus);
+ res = UNKNOWN_ERROR;
+ }
+ } else {
+ ALOGE("%s: Unexpected binder error: %s", __FUNCTION__, ret.description().c_str());
+ res = UNKNOWN_ERROR;
+ }
+
+ return res;
+}
+
status_t CameraProviderManager::ProviderInfo::DeviceInfo3::getCameraInfo(
hardware::CameraInfo *info) const {
if (info == nullptr) return BAD_VALUE;