xref: /drivers/peripheral/camera/interfaces/hdi_ipc/camera_host_driver.cpp

/*
 * Copyright (c) 2021 Huawei Device Co., Ltd.
 * 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 <hdf_base.h>
#include <hdf_device_desc.h>
#include <hdf_log.h>
#include <hdf_sbuf_ipc.h>
#include "v1_0/camera_host_stub.h"

using namespace OHOS::HDI::Camera::V1_0;

struct HdfCameraHostHost {
    struct IDeviceIoService ioService;
    OHOS::sptr<OHOS::IRemoteObject> stub;
};

static int32_t CameraHostDriverDispatch(struct HdfDeviceIoClient *client, int cmdId, struct HdfSBuf *data,
    struct HdfSBuf *reply)
{
    auto *hdfCameraHostHost = CONTAINER_OF(client->device->service, struct HdfCameraHostHost, ioService);

    OHOS::MessageParcel *dataParcel = nullptr;
    OHOS::MessageParcel *replyParcel = nullptr;
    OHOS::MessageOption option;

    if (SbufToParcel(data, &dataParcel) != HDF_SUCCESS) {
        HDF_LOGE("%{public}s:invalid data sbuf object to dispatch", __func__);
        return HDF_ERR_INVALID_PARAM;
    }
    if (SbufToParcel(reply, &replyParcel) != HDF_SUCCESS) {
        HDF_LOGE("%{public}s:invalid reply sbuf object to dispatch", __func__);
        return HDF_ERR_INVALID_PARAM;
    }

    return hdfCameraHostHost->stub->SendRequest(cmdId, *dataParcel, *replyParcel, option);
}

static int HdfCameraHostDriverInit(struct HdfDeviceObject *deviceObject)
{
    HDF_LOGI("HdfCameraHostDriverInit enter");
    (void)deviceObject;
    return HDF_SUCCESS;
}

extern "C" ICameraHost *CameraHostServiceGetInstance(void);

static int HdfCameraHostDriverBind(struct HdfDeviceObject *deviceObject)
{
    HDF_LOGI("HdfCameraHostDriverBind enter");
    if (deviceObject == nullptr) {
        HDF_LOGE("%{public}s: device object is NULL!", __func__);
        return HDF_FAILURE;
    }

    auto *hdfCameraHostHost = new (std::nothrow) HdfCameraHostHost;
    if (hdfCameraHostHost == nullptr) {
        HDF_LOGE("%{public}s: failed to create create HdfCameraHostHost object", __func__);
        return HDF_FAILURE;
    }

    hdfCameraHostHost->ioService.Dispatch = CameraHostDriverDispatch;
    hdfCameraHostHost->ioService.Open = NULL;
    hdfCameraHostHost->ioService.Release = NULL;

    OHOS::sptr<ICameraHost> serviceImpl {CameraHostServiceGetInstance()};
    if (serviceImpl == nullptr) {
        HDF_LOGE("%{public}s: failed to get of implement service", __func__);
        delete hdfCameraHostHost;
        return HDF_FAILURE;
    }

    hdfCameraHostHost->stub = OHOS::HDI::ObjectCollector::GetInstance().GetOrNewObject(serviceImpl,
        ICameraHost::GetDescriptor());
    if (hdfCameraHostHost->stub == nullptr) {
        HDF_LOGE("%{public}s: failed to get stub object", __func__);
        delete hdfCameraHostHost;
        return HDF_FAILURE;
    }

    deviceObject->service = &hdfCameraHostHost->ioService;
    return HDF_SUCCESS;
}

static void HdfCameraHostDriverRelease(struct HdfDeviceObject *deviceObject)
{
    HDF_LOGI("HdfCameraHostDriverRelease enter");
    if (deviceObject == nullptr) {
        HDF_LOGE("%{public}s: device object is NULL!", __func__);
        return;
    }

    if (deviceObject->service == nullptr) {
        HDF_LOGE("HdfCameraHostDriverRelease not initted");
        return;
    }

    auto *hdfCameraHostHost = CONTAINER_OF(deviceObject->service, struct HdfCameraHostHost, ioService);
    delete hdfCameraHostHost;
}

static struct HdfDriverEntry g_camerahostDriverEntry = {
    .moduleVersion = 1,
    .moduleName = "camera_service",
    .Bind = HdfCameraHostDriverBind,
    .Init = HdfCameraHostDriverInit,
    .Release = HdfCameraHostDriverRelease,
};

#ifndef __cplusplus
extern "C" {
#endif
HDF_INIT(g_camerahostDriverEntry);
#ifndef __cplusplus
}
#endif