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PL286/hardware/interfaces/camera/provider/2.4/default/CameraProvider.cpp

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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
*
* 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 "CamProvider@2.4-impl"
//#define LOG_NDEBUG 0
#include <android/log.h>
#include "CameraProvider.h"
#include "CameraDevice_1_0.h"
#include "CameraDevice_3_3.h"
#include <cutils/properties.h>
#include <string.h>
#include <utils/Trace.h>
namespace android {
namespace hardware {
namespace camera {
namespace provider {
namespace V2_4 {
namespace implementation {
namespace {
const char *kLegacyProviderName = "legacy/0";
// "device@<version>/legacy/<id>"
const std::regex kDeviceNameRE("device@([0-9]+\\.[0-9]+)/legacy/(.+)");
const char *kHAL3_2 = "3.2";
const char *kHAL3_3 = "3.3";
const char *kHAL1_0 = "1.0";
const int kMaxCameraDeviceNameLen = 128;
const int kMaxCameraIdLen = 16;
bool matchDeviceName(const hidl_string& deviceName, std::string* deviceVersion,
std::string* cameraId) {
std::string deviceNameStd(deviceName.c_str());
std::smatch sm;
if (std::regex_match(deviceNameStd, sm, kDeviceNameRE)) {
if (deviceVersion != nullptr) {
*deviceVersion = sm[1];
}
if (cameraId != nullptr) {
*cameraId = sm[2];
}
return true;
}
return false;
}
} // anonymous namespace
using ::android::hardware::camera::common::V1_0::CameraMetadataType;
using ::android::hardware::camera::common::V1_0::Status;
/**
* static callback forwarding methods from HAL to instance
*/
void CameraProvider::sCameraDeviceStatusChange(
const struct camera_module_callbacks* callbacks,
int camera_id,
int new_status) {
CameraProvider* cp = const_cast<CameraProvider*>(
static_cast<const CameraProvider*>(callbacks));
if (cp == nullptr) {
ALOGE("%s: callback ops is null", __FUNCTION__);
return;
}
Mutex::Autolock _l(cp->mCbLock);
char cameraId[kMaxCameraIdLen];
snprintf(cameraId, sizeof(cameraId), "%d", camera_id);
std::string cameraIdStr(cameraId);
cp->mCameraStatusMap[cameraIdStr] = (camera_device_status_t) new_status;
if (cp->mCallbacks != nullptr) {
CameraDeviceStatus status = (CameraDeviceStatus) new_status;
for (auto const& deviceNamePair : cp->mCameraDeviceNames) {
if (cameraIdStr.compare(deviceNamePair.first) == 0) {
cp->mCallbacks->cameraDeviceStatusChange(
deviceNamePair.second, status);
}
}
}
}
void CameraProvider::sTorchModeStatusChange(
const struct camera_module_callbacks* callbacks,
const char* camera_id,
int new_status) {
CameraProvider* cp = const_cast<CameraProvider*>(
static_cast<const CameraProvider*>(callbacks));
if (cp == nullptr) {
ALOGE("%s: callback ops is null", __FUNCTION__);
return;
}
Mutex::Autolock _l(cp->mCbLock);
if (cp->mCallbacks != nullptr) {
std::string cameraIdStr(camera_id);
TorchModeStatus status = (TorchModeStatus) new_status;
for (auto const& deviceNamePair : cp->mCameraDeviceNames) {
if (cameraIdStr.compare(deviceNamePair.first) == 0) {
cp->mCallbacks->torchModeStatusChange(
deviceNamePair.second, status);
}
}
}
}
Status CameraProvider::getHidlStatus(int status) {
switch (status) {
case 0: return Status::OK;
case -ENODEV: return Status::INTERNAL_ERROR;
case -EINVAL: return Status::ILLEGAL_ARGUMENT;
default:
ALOGE("%s: unknown HAL status code %d", __FUNCTION__, status);
return Status::INTERNAL_ERROR;
}
}
std::string CameraProvider::getLegacyCameraId(const hidl_string& deviceName) {
std::string cameraId;
matchDeviceName(deviceName, nullptr, &cameraId);
return cameraId;
}
int CameraProvider::getCameraDeviceVersion(const hidl_string& deviceName) {
std::string deviceVersion;
bool match = matchDeviceName(deviceName, &deviceVersion, nullptr);
if (!match) {
return -1;
}
if (deviceVersion == kHAL3_3) {
return CAMERA_DEVICE_API_VERSION_3_3;
} else if (deviceVersion == kHAL3_2) {
return CAMERA_DEVICE_API_VERSION_3_2;
} else if (deviceVersion == kHAL1_0) {
return CAMERA_DEVICE_API_VERSION_1_0;
}
return 0;
}
std::string CameraProvider::getHidlDeviceName(
std::string cameraId, int deviceVersion) {
// Maybe consider create a version check method and SortedVec to speed up?
if (deviceVersion != CAMERA_DEVICE_API_VERSION_1_0 &&
deviceVersion != CAMERA_DEVICE_API_VERSION_3_2 &&
deviceVersion != CAMERA_DEVICE_API_VERSION_3_3 &&
deviceVersion != CAMERA_DEVICE_API_VERSION_3_4 ) {
return hidl_string("");
}
bool isV1 = deviceVersion == CAMERA_DEVICE_API_VERSION_1_0;
int versionMajor = isV1 ? 1 : 3;
int versionMinor = isV1 ? 0 : mPreferredHal3MinorVersion;
char deviceName[kMaxCameraDeviceNameLen];
snprintf(deviceName, sizeof(deviceName), "device@%d.%d/legacy/%s",
versionMajor, versionMinor, cameraId.c_str());
return deviceName;
}
CameraProvider::CameraProvider() :
camera_module_callbacks_t({sCameraDeviceStatusChange,
sTorchModeStatusChange}) {
mInitFailed = initialize();
}
CameraProvider::~CameraProvider() {}
bool CameraProvider::initialize() {
camera_module_t *rawModule;
int err = hw_get_module(CAMERA_HARDWARE_MODULE_ID,
(const hw_module_t **)&rawModule);
if (err < 0) {
ALOGE("Could not load camera HAL module: %d (%s)", err, strerror(-err));
return true;
}
mModule = new CameraModule(rawModule);
err = mModule->init();
if (err != OK) {
ALOGE("Could not initialize camera HAL module: %d (%s)", err, strerror(-err));
mModule.clear();
return true;
}
ALOGI("Loaded \"%s\" camera module", mModule->getModuleName());
// Setup vendor tags here so HAL can setup vendor keys in camera characteristics
VendorTagDescriptor::clearGlobalVendorTagDescriptor();
if (!setUpVendorTags()) {
ALOGE("%s: Vendor tag setup failed, will not be available.", __FUNCTION__);
}
// Setup callback now because we are going to try openLegacy next
err = mModule->setCallbacks(this);
if (err != OK) {
ALOGE("Could not set camera module callback: %d (%s)", err, strerror(-err));
mModule.clear();
return true;
}
mPreferredHal3MinorVersion = property_get_int32("ro.camera.wrapper.hal3TrebleMinorVersion", 3);
ALOGV("Preferred HAL 3 minor version is %d", mPreferredHal3MinorVersion);
switch(mPreferredHal3MinorVersion) {
case 2:
case 3:
// OK
break;
default:
ALOGW("Unknown minor camera device HAL version %d in property "
"'camera.wrapper.hal3TrebleMinorVersion', defaulting to 3", mPreferredHal3MinorVersion);
mPreferredHal3MinorVersion = 3;
}
mNumberOfLegacyCameras = mModule->getNumberOfCameras();
for (int i = 0; i < mNumberOfLegacyCameras; i++) {
struct camera_info info;
auto rc = mModule->getCameraInfo(i, &info);
if (rc != NO_ERROR) {
ALOGE("%s: Camera info query failed!", __func__);
mModule.clear();
return true;
}
if (checkCameraVersion(i, info) != OK) {
ALOGE("%s: Camera version check failed!", __func__);
mModule.clear();
return true;
}
char cameraId[kMaxCameraIdLen];
snprintf(cameraId, sizeof(cameraId), "%d", i);
std::string cameraIdStr(cameraId);
mCameraStatusMap[cameraIdStr] = CAMERA_DEVICE_STATUS_PRESENT;
mCameraIds.add(cameraIdStr);
// initialize mCameraDeviceNames and mOpenLegacySupported
mOpenLegacySupported[cameraIdStr] = false;
int deviceVersion = mModule->getDeviceVersion(i);
mCameraDeviceNames.add(
std::make_pair(cameraIdStr,
getHidlDeviceName(cameraIdStr, deviceVersion)));
if (deviceVersion >= CAMERA_DEVICE_API_VERSION_3_2 &&
mModule->isOpenLegacyDefined()) {
// try open_legacy to see if it actually works
struct hw_device_t* halDev = nullptr;
int ret = mModule->openLegacy(cameraId, CAMERA_DEVICE_API_VERSION_1_0, &halDev);
if (ret == 0) {
mOpenLegacySupported[cameraIdStr] = true;
halDev->close(halDev);
mCameraDeviceNames.add(
std::make_pair(cameraIdStr,
getHidlDeviceName(cameraIdStr, CAMERA_DEVICE_API_VERSION_1_0)));
} else if (ret == -EBUSY || ret == -EUSERS) {
// Looks like this provider instance is not initialized during
// system startup and there are other camera users already.
// Not a good sign but not fatal.
ALOGW("%s: open_legacy try failed!", __FUNCTION__);
}
}
}
return false; // mInitFailed
}
/**
* Check that the device HAL version is still in supported.
*/
int CameraProvider::checkCameraVersion(int id, camera_info info) {
if (mModule == nullptr) {
return NO_INIT;
}
// device_version undefined in CAMERA_MODULE_API_VERSION_1_0,
// All CAMERA_MODULE_API_VERSION_1_0 devices are backward-compatible
if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_0) {
// Verify the device version is in the supported range
switch (info.device_version) {
case CAMERA_DEVICE_API_VERSION_1_0:
case CAMERA_DEVICE_API_VERSION_3_2:
case CAMERA_DEVICE_API_VERSION_3_3:
case CAMERA_DEVICE_API_VERSION_3_4:
// in support
break;
case CAMERA_DEVICE_API_VERSION_2_0:
case CAMERA_DEVICE_API_VERSION_2_1:
case CAMERA_DEVICE_API_VERSION_3_0:
case CAMERA_DEVICE_API_VERSION_3_1:
// no longer supported
default:
ALOGE("%s: Device %d has HAL version %x, which is not supported",
__FUNCTION__, id, info.device_version);
return NO_INIT;
}
}
return OK;
}
bool CameraProvider::setUpVendorTags() {
ATRACE_CALL();
vendor_tag_ops_t vOps = vendor_tag_ops_t();
// Check if vendor operations have been implemented
if (!mModule->isVendorTagDefined()) {
ALOGI("%s: No vendor tags defined for this device.", __FUNCTION__);
return true;
}
mModule->getVendorTagOps(&vOps);
// Ensure all vendor operations are present
if (vOps.get_tag_count == nullptr || vOps.get_all_tags == nullptr ||
vOps.get_section_name == nullptr || vOps.get_tag_name == nullptr ||
vOps.get_tag_type == nullptr) {
ALOGE("%s: Vendor tag operations not fully defined. Ignoring definitions."
, __FUNCTION__);
return false;
}
// Read all vendor tag definitions into a descriptor
sp<VendorTagDescriptor> desc;
status_t res;
if ((res = VendorTagDescriptor::createDescriptorFromOps(&vOps, /*out*/desc))
!= OK) {
ALOGE("%s: Could not generate descriptor from vendor tag operations,"
"received error %s (%d). Camera clients will not be able to use"
"vendor tags", __FUNCTION__, strerror(res), res);
return false;
}
// Set the global descriptor to use with camera metadata
VendorTagDescriptor::setAsGlobalVendorTagDescriptor(desc);
const SortedVector<String8>* sectionNames = desc->getAllSectionNames();
size_t numSections = sectionNames->size();
std::vector<std::vector<VendorTag>> tagsBySection(numSections);
int tagCount = desc->getTagCount();
std::vector<uint32_t> tags(tagCount);
desc->getTagArray(tags.data());
for (int i = 0; i < tagCount; i++) {
VendorTag vt;
vt.tagId = tags[i];
vt.tagName = desc->getTagName(tags[i]);
vt.tagType = (CameraMetadataType) desc->getTagType(tags[i]);
ssize_t sectionIdx = desc->getSectionIndex(tags[i]);
tagsBySection[sectionIdx].push_back(vt);
}
mVendorTagSections.resize(numSections);
for (size_t s = 0; s < numSections; s++) {
mVendorTagSections[s].sectionName = (*sectionNames)[s].string();
mVendorTagSections[s].tags = tagsBySection[s];
}
return true;
}
// Methods from ::android::hardware::camera::provider::V2_4::ICameraProvider follow.
Return<Status> CameraProvider::setCallback(const sp<ICameraProviderCallback>& callback) {
Mutex::Autolock _l(mCbLock);
mCallbacks = callback;
return Status::OK;
}
Return<void> CameraProvider::getVendorTags(getVendorTags_cb _hidl_cb) {
_hidl_cb(Status::OK, mVendorTagSections);
return Void();
}
Return<void> CameraProvider::getCameraIdList(getCameraIdList_cb _hidl_cb) {
std::vector<hidl_string> deviceNameList;
for (auto const& deviceNamePair : mCameraDeviceNames) {
if (mCameraStatusMap[deviceNamePair.first] == CAMERA_DEVICE_STATUS_PRESENT) {
deviceNameList.push_back(deviceNamePair.second);
}
}
hidl_vec<hidl_string> hidlDeviceNameList(deviceNameList);
_hidl_cb(Status::OK, hidlDeviceNameList);
return Void();
}
Return<void> CameraProvider::isSetTorchModeSupported(isSetTorchModeSupported_cb _hidl_cb) {
bool support = mModule->isSetTorchModeSupported();
_hidl_cb (Status::OK, support);
return Void();
}
Return<void> CameraProvider::getCameraDeviceInterface_V1_x(
const hidl_string& cameraDeviceName, getCameraDeviceInterface_V1_x_cb _hidl_cb) {
std::string cameraId, deviceVersion;
bool match = matchDeviceName(cameraDeviceName, &deviceVersion, &cameraId);
if (!match) {
_hidl_cb(Status::ILLEGAL_ARGUMENT, nullptr);
return Void();
}
std::string deviceName(cameraDeviceName.c_str());
ssize_t index = mCameraDeviceNames.indexOf(std::make_pair(cameraId, deviceName));
if (index == NAME_NOT_FOUND) { // Either an illegal name or a device version mismatch
Status status = Status::OK;
ssize_t idx = mCameraIds.indexOf(cameraId);
if (idx == NAME_NOT_FOUND) {
ALOGE("%s: cannot find camera %s!", __FUNCTION__, cameraId.c_str());
status = Status::ILLEGAL_ARGUMENT;
} else { // invalid version
ALOGE("%s: camera device %s does not support version %s!",
__FUNCTION__, cameraId.c_str(), deviceVersion.c_str());
status = Status::OPERATION_NOT_SUPPORTED;
}
_hidl_cb(status, nullptr);
return Void();
}
if (mCameraStatusMap.count(cameraId) == 0 ||
mCameraStatusMap[cameraId] != CAMERA_DEVICE_STATUS_PRESENT) {
_hidl_cb(Status::ILLEGAL_ARGUMENT, nullptr);
return Void();
}
sp<android::hardware::camera::device::V1_0::implementation::CameraDevice> device =
new android::hardware::camera::device::V1_0::implementation::CameraDevice(
mModule, cameraId, mCameraDeviceNames);
if (device == nullptr) {
ALOGE("%s: cannot allocate camera device for id %s", __FUNCTION__, cameraId.c_str());
_hidl_cb(Status::INTERNAL_ERROR, nullptr);
return Void();
}
if (device->isInitFailed()) {
ALOGE("%s: camera device %s init failed!", __FUNCTION__, cameraId.c_str());
device = nullptr;
_hidl_cb(Status::INTERNAL_ERROR, nullptr);
return Void();
}
_hidl_cb (Status::OK, device);
return Void();
}
Return<void> CameraProvider::getCameraDeviceInterface_V3_x(
const hidl_string& cameraDeviceName, getCameraDeviceInterface_V3_x_cb _hidl_cb) {
std::string cameraId, deviceVersion;
bool match = matchDeviceName(cameraDeviceName, &deviceVersion, &cameraId);
if (!match) {
_hidl_cb(Status::ILLEGAL_ARGUMENT, nullptr);
return Void();
}
std::string deviceName(cameraDeviceName.c_str());
ssize_t index = mCameraDeviceNames.indexOf(std::make_pair(cameraId, deviceName));
if (index == NAME_NOT_FOUND) { // Either an illegal name or a device version mismatch
Status status = Status::OK;
ssize_t idx = mCameraIds.indexOf(cameraId);
if (idx == NAME_NOT_FOUND) {
ALOGE("%s: cannot find camera %s!", __FUNCTION__, cameraId.c_str());
status = Status::ILLEGAL_ARGUMENT;
} else { // invalid version
ALOGE("%s: camera device %s does not support version %s!",
__FUNCTION__, cameraId.c_str(), deviceVersion.c_str());
status = Status::OPERATION_NOT_SUPPORTED;
}
_hidl_cb(status, nullptr);
return Void();
}
if (mCameraStatusMap.count(cameraId) == 0 ||
mCameraStatusMap[cameraId] != CAMERA_DEVICE_STATUS_PRESENT) {
_hidl_cb(Status::ILLEGAL_ARGUMENT, nullptr);
return Void();
}
// Since some Treble HAL revisions can map to the same legacy HAL version(s), we default
// to the newest possible Treble HAL revision, but allow for override if needed via
// system property.
sp<android::hardware::camera::device::V3_2::ICameraDevice> device;
switch (mPreferredHal3MinorVersion) {
case 2: { // Map legacy camera device v3 HAL to Treble camera device HAL v3.2
ALOGV("Constructing v3.2 camera device");
sp<android::hardware::camera::device::V3_2::implementation::CameraDevice> deviceImpl =
new android::hardware::camera::device::V3_2::implementation::CameraDevice(
mModule, cameraId, mCameraDeviceNames);
if (deviceImpl == nullptr || deviceImpl->isInitFailed()) {
ALOGE("%s: camera device %s init failed!", __FUNCTION__, cameraId.c_str());
device = nullptr;
_hidl_cb(Status::INTERNAL_ERROR, nullptr);
return Void();
}
device = deviceImpl;
break;
}
case 3: { // Map legacy camera device v3 HAL to Treble camera device HAL v3.3
ALOGV("Constructing v3.3 camera device");
sp<android::hardware::camera::device::V3_2::implementation::CameraDevice> deviceImpl =
new android::hardware::camera::device::V3_3::implementation::CameraDevice(
mModule, cameraId, mCameraDeviceNames);
if (deviceImpl == nullptr || deviceImpl->isInitFailed()) {
ALOGE("%s: camera device %s init failed!", __FUNCTION__, cameraId.c_str());
device = nullptr;
_hidl_cb(Status::INTERNAL_ERROR, nullptr);
return Void();
}
device = deviceImpl;
break;
}
default:
ALOGE("%s: Unknown HAL minor version %d!", __FUNCTION__, mPreferredHal3MinorVersion);
device = nullptr;
_hidl_cb(Status::INTERNAL_ERROR, nullptr);
return Void();
}
_hidl_cb (Status::OK, device);
return Void();
}
ICameraProvider* HIDL_FETCH_ICameraProvider(const char* name) {
if (strcmp(name, kLegacyProviderName) != 0) {
return nullptr;
}
CameraProvider* provider = new CameraProvider();
if (provider == nullptr) {
ALOGE("%s: cannot allocate camera provider!", __FUNCTION__);
return nullptr;
}
if (provider->isInitFailed()) {
ALOGE("%s: camera provider init failed!", __FUNCTION__);
delete provider;
return nullptr;
}
return provider;
}
} // namespace implementation
} // namespace V2_4
} // namespace provider
} // namespace camera
} // namespace hardware
} // namespace android