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/*
* Copyright (C) 2023 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.
*/
#include <charconv>
#include <inttypes.h>
#include <log/log.h>
#include "CameraProvider.h"
#include "CameraDevice.h"
#include "HwCamera.h"
#include "debug.h"
namespace android {
namespace hardware {
namespace camera {
namespace provider {
namespace implementation {
namespace {
constexpr char kCameraIdPrefix[] = "device@1.0/internal/";
std::string getLogicalCameraId(const int index) {
char buf[sizeof(kCameraIdPrefix) + 8];
snprintf(buf, sizeof(buf), "%s%d", kCameraIdPrefix, index);
return buf;
}
std::optional<int> parseLogicalCameraId(const std::string_view str) {
if (str.size() < sizeof(kCameraIdPrefix)) {
return FAILURE(std::nullopt);
}
if (memcmp(str.data(), kCameraIdPrefix, sizeof(kCameraIdPrefix) - 1) != 0) {
return FAILURE(std::nullopt);
}
int index;
const auto r = std::from_chars(&str[sizeof(kCameraIdPrefix) - 1],
&*str.end(), index, 10);
if (r.ec == std::errc()) {
return index;
} else {
return FAILURE(std::nullopt);
}
}
} // namespace
using aidl::android::hardware::camera::common::Status;
CameraProvider::CameraProvider(const int deviceIdBase,
Span<const hw::HwCameraFactory> availableCameras)
: mDeviceIdBase(deviceIdBase)
, mAvailableCameras(availableCameras) {}
CameraProvider::~CameraProvider() {}
ScopedAStatus CameraProvider::setCallback(
const std::shared_ptr<ICameraProviderCallback>& callback) {
mCallback = callback;
return ScopedAStatus::ok();
}
ScopedAStatus CameraProvider::getVendorTags(std::vector<VendorTagSection>* vts) {
*vts = {};
return ScopedAStatus::ok();
}
ScopedAStatus CameraProvider::getCameraIdList(std::vector<std::string>* camera_ids) {
camera_ids->reserve(mAvailableCameras.size());
for (int i = 0; i < mAvailableCameras.size(); ++i) {
camera_ids->push_back(getLogicalCameraId(mDeviceIdBase + i));
}
return ScopedAStatus::ok();
}
ScopedAStatus CameraProvider::getCameraDeviceInterface(
const std::string& name,
std::shared_ptr<ICameraDevice>* device) {
const std::optional<int> maybeIndex = parseLogicalCameraId(name);
if (!maybeIndex) {
return toScopedAStatus(FAILURE(Status::ILLEGAL_ARGUMENT));
}
const int index = maybeIndex.value() - mDeviceIdBase;
if ((index >= 0) && (index < mAvailableCameras.size())) {
auto hwCamera = mAvailableCameras[index]();
if (hwCamera) {
auto p = ndk::SharedRefBase::make<CameraDevice>(std::move(hwCamera));
p->mSelf = p;
*device = std::move(p);
return ScopedAStatus::ok();
} else {
return toScopedAStatus(FAILURE(Status::INTERNAL_ERROR));
}
} else {
return toScopedAStatus(FAILURE(Status::ILLEGAL_ARGUMENT));
}
}
ScopedAStatus CameraProvider::notifyDeviceStateChange(const int64_t /*deviceState*/) {
return ScopedAStatus::ok();
}
ScopedAStatus CameraProvider::getConcurrentCameraIds(
std::vector<ConcurrentCameraIdCombination>* concurrentCameraIds) {
*concurrentCameraIds = {};
return ScopedAStatus::ok();
}
ScopedAStatus CameraProvider::isConcurrentStreamCombinationSupported(
const std::vector<CameraIdAndStreamCombination>& /*configs*/,
bool* support) {
*support = false;
return ScopedAStatus::ok();
}
} // namespace implementation
} // namespace provider
} // namespace camera
} // namespace hardware
} // namespace android
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