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/*
* Copyright (C) 2015 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
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "CameraModule"
//#define LOG_NDEBUG 0
#include "CameraModule.h"
namespace android {
void CameraModule::deriveCameraCharacteristicsKeys(
uint32_t deviceVersion, CameraMetadata &chars) {
// HAL1 devices should not reach here
if (deviceVersion < CAMERA_DEVICE_API_VERSION_2_0) {
ALOGV("%s: Cannot derive keys for HAL version < 2.0");
return;
}
// Keys added in HAL3.3
if (deviceVersion < CAMERA_DEVICE_API_VERSION_3_3) {
Vector<uint8_t> controlModes;
uint8_t data = ANDROID_CONTROL_AE_LOCK_AVAILABLE_TRUE;
chars.update(ANDROID_CONTROL_AE_LOCK_AVAILABLE, &data, /*count*/1);
data = ANDROID_CONTROL_AWB_LOCK_AVAILABLE_TRUE;
chars.update(ANDROID_CONTROL_AWB_LOCK_AVAILABLE, &data, /*count*/1);
controlModes.push(ANDROID_CONTROL_MODE_OFF);
controlModes.push(ANDROID_CONTROL_MODE_AUTO);
camera_metadata_entry entry = chars.find(ANDROID_CONTROL_AVAILABLE_SCENE_MODES);
if (entry.count > 1 || entry.data.u8[0] != ANDROID_CONTROL_SCENE_MODE_DISABLED) {
controlModes.push(ANDROID_CONTROL_MODE_USE_SCENE_MODE);
}
chars.update(ANDROID_CONTROL_AVAILABLE_MODES, controlModes);
}
return;
}
CameraModule::CameraModule(camera_module_t *module) {
if (module == NULL) {
ALOGE("%s: camera hardware module must not be null", __FUNCTION__);
assert(0);
}
mModule = module;
mCameraInfoMap.setCapacity(getNumberOfCameras());
}
int CameraModule::init() {
if (getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_4 &&
mModule->init != NULL) {
return mModule->init();
}
return OK;
}
int CameraModule::getCameraInfo(int cameraId, struct camera_info *info) {
Mutex::Autolock lock(mCameraInfoLock);
if (cameraId < 0) {
ALOGE("%s: Invalid camera ID %d", __FUNCTION__, cameraId);
return -EINVAL;
}
// Only override static_camera_characteristics for API2 devices
int apiVersion = mModule->common.module_api_version;
if (apiVersion < CAMERA_MODULE_API_VERSION_2_0) {
return mModule->get_camera_info(cameraId, info);
}
ssize_t index = mCameraInfoMap.indexOfKey(cameraId);
if (index == NAME_NOT_FOUND) {
// Get camera info from raw module and cache it
camera_info rawInfo, cameraInfo;
int ret = mModule->get_camera_info(cameraId, &rawInfo);
if (ret != 0) {
return ret;
}
CameraMetadata m;
m = rawInfo.static_camera_characteristics;
deriveCameraCharacteristicsKeys(rawInfo.device_version, m);
mCameraCharacteristicsMap.add(cameraId, m);
cameraInfo = rawInfo;
cameraInfo.static_camera_characteristics =
mCameraCharacteristicsMap.valueFor(cameraId).getAndLock();
mCameraInfoMap.add(cameraId, cameraInfo);
index = mCameraInfoMap.indexOfKey(cameraId);
}
assert(index != NAME_NOT_FOUND);
// return the cached camera info
*info = mCameraInfoMap[index];
return OK;
}
int CameraModule::open(const char* id, struct hw_device_t** device) {
return filterOpenErrorCode(mModule->common.methods->open(&mModule->common, id, device));
}
int CameraModule::openLegacy(
const char* id, uint32_t halVersion, struct hw_device_t** device) {
return mModule->open_legacy(&mModule->common, id, halVersion, device);
}
int CameraModule::getNumberOfCameras() {
return mModule->get_number_of_cameras();
}
int CameraModule::setCallbacks(const camera_module_callbacks_t *callbacks) {
return mModule->set_callbacks(callbacks);
}
bool CameraModule::isVendorTagDefined() {
return mModule->get_vendor_tag_ops != NULL;
}
void CameraModule::getVendorTagOps(vendor_tag_ops_t* ops) {
if (mModule->get_vendor_tag_ops) {
mModule->get_vendor_tag_ops(ops);
}
}
int CameraModule::setTorchMode(const char* camera_id, bool enable) {
return mModule->set_torch_mode(camera_id, enable);
}
status_t CameraModule::filterOpenErrorCode(status_t err) {
switch(err) {
case NO_ERROR:
case -EBUSY:
case -EINVAL:
case -EUSERS:
return err;
default:
break;
}
return -ENODEV;
}
uint16_t CameraModule::getModuleApiVersion() {
return mModule->common.module_api_version;
}
const char* CameraModule::getModuleName() {
return mModule->common.name;
}
uint16_t CameraModule::getHalApiVersion() {
return mModule->common.hal_api_version;
}
const char* CameraModule::getModuleAuthor() {
return mModule->common.author;
}
void* CameraModule::getDso() {
return mModule->common.dso;
}
}; // namespace android
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