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* Copyright (C) 2016 The Android Open Source Project
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* See the License for the specific language governing permissions and
* limitations under the License.
#include <android/hardware/camera/provider/2.4/ICameraProvider.h>
#include "hardware/camera_common.h"
#include "utils/Mutex.h"
#include "utils/SortedVector.h"
#include "CameraModule.h"
#include "VendorTagDescriptor.h"
namespace android {
namespace hardware {
namespace camera {
namespace provider {
namespace V2_4 {
namespace implementation {
using ::android::hardware::camera::common::V1_0::CameraDeviceStatus;
using ::android::hardware::camera::common::V1_0::Status;
using ::android::hardware::camera::common::V1_0::TorchModeStatus;
using ::android::hardware::camera::common::V1_0::VendorTag;
using ::android::hardware::camera::common::V1_0::VendorTagSection;
using ::android::hardware::camera::common::V1_0::helper::CameraModule;
using ::android::hardware::camera::common::V1_0::helper::VendorTagDescriptor;
using ::android::hardware::camera::provider::V2_4::ICameraProvider;
using ::android::hardware::camera::provider::V2_4::ICameraProviderCallback;
using ::android::hardware::Return;
using ::android::hardware::Void;
using ::android::hardware::hidl_vec;
using ::android::hardware::hidl_string;
using ::android::sp;
using ::android::Mutex;
* The implementation of legacy wrapper CameraProvider 2.4, separated
* from the HIDL interface layer to allow for implementation reuse by later
* provider versions.
* This implementation supports cameras implemented via the legacy libhardware
* camera HAL definitions.
struct LegacyCameraProviderImpl_2_4 : public camera_module_callbacks_t {
// Caller must use this method to check if CameraProvider ctor failed
bool isInitFailed() { return mInitFailed; }
// Methods from ::android::hardware::camera::provider::V2_4::ICameraProvider follow.
Return<Status> setCallback(const sp<ICameraProviderCallback>& callback);
Return<void> getVendorTags(ICameraProvider::getVendorTags_cb _hidl_cb);
Return<void> getCameraIdList(ICameraProvider::getCameraIdList_cb _hidl_cb);
Return<void> isSetTorchModeSupported(ICameraProvider::isSetTorchModeSupported_cb _hidl_cb);
Return<void> getCameraDeviceInterface_V1_x(
const hidl_string& cameraDeviceName,
ICameraProvider::getCameraDeviceInterface_V1_x_cb _hidl_cb);
Return<void> getCameraDeviceInterface_V3_x(
const hidl_string& cameraDeviceName,
ICameraProvider::getCameraDeviceInterface_V3_x_cb _hidl_cb);
Mutex mCbLock;
sp<ICameraProviderCallback> mCallbacks = nullptr;
sp<CameraModule> mModule;
int mNumberOfLegacyCameras;
std::map<std::string, camera_device_status_t> mCameraStatusMap; // camera id -> status
std::map<std::string, bool> mOpenLegacySupported; // camera id -> open_legacy HAL1.0 supported
SortedVector<std::string> mCameraIds; // the "0"/"1" legacy camera Ids
// (cameraId string, hidl device name) pairs
SortedVector<std::pair<std::string, std::string>> mCameraDeviceNames;
int mPreferredHal3MinorVersion;
// Must be queried before using any APIs.
// APIs will only work when this returns true
bool mInitFailed;
bool initialize();
hidl_vec<VendorTagSection> mVendorTagSections;
bool setUpVendorTags();
int checkCameraVersion(int id, camera_info info);
// create HIDL device name from camera ID and legacy device version
std::string getHidlDeviceName(std::string cameraId, int deviceVersion);
// extract legacy camera ID/device version from a HIDL device name
static std::string getLegacyCameraId(const hidl_string& deviceName);
// convert conventional HAL status to HIDL Status
static Status getHidlStatus(int);
// static callback forwarding methods
static void sCameraDeviceStatusChange(
const struct camera_module_callbacks* callbacks,
int camera_id,
int new_status);
static void sTorchModeStatusChange(
const struct camera_module_callbacks* callbacks,
const char* camera_id,
int new_status);
void addDeviceNames(int camera_id, CameraDeviceStatus status = CameraDeviceStatus::PRESENT,
bool cam_new = false);
void removeDeviceNames(int camera_id);
} // namespace implementation
} // namespace V2_4
} // namespace provider
} // namespace camera
} // namespace hardware
} // namespace android