camera/device/default/convert.cpp

/*
 * Copyright (C) 2022 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 "android.hardware.camera.device@3.4-convert-impl"
#include <log/log.h>

#include "convert.h"

#include <aidl/android/hardware/graphics/common/BufferUsage.h>
#include <aidl/android/hardware/graphics/common/PixelFormat.h>
#include <hardware/camera_common.h>

namespace android {
namespace hardware {
namespace camera {
namespace device {
namespace implementation {

using ::aidl::android::hardware::camera::device::ErrorCode;
using ::aidl::android::hardware::camera::device::ErrorMsg;
using ::aidl::android::hardware::camera::device::ShutterMsg;
using ::aidl::android::hardware::graphics::common::BufferUsage;
using ::aidl::android::hardware::graphics::common::PixelFormat;

void convertToAidl(const camera_metadata_t* src, CameraMetadata* dest) {
    if (src == nullptr) {
        return;
    }

    size_t size = get_camera_metadata_size(src);
    auto* src_start = (uint8_t*)src;
    uint8_t* src_end = src_start + size;
    dest->metadata.assign(src_start, src_end);
}

bool convertFromAidl(const CameraMetadata& src, const camera_metadata_t** dst) {
    const std::vector<uint8_t>& metadata = src.metadata;
    if (metadata.empty()) {
        // Special case for null metadata
        *dst = nullptr;
        return true;
    }

    const uint8_t* data = metadata.data();
    // check that the size of CameraMetadata match underlying camera_metadata_t
    if (get_camera_metadata_size((camera_metadata_t*)data) != metadata.size()) {
        ALOGE("%s: input CameraMetadata is corrupt!", __FUNCTION__);
        return false;
    }
    *dst = (camera_metadata_t*)data;
    return true;
}

}  // namespace implementation
}  // namespace device
}  // namespace camera
}  // namespace hardware
}  // namespace android