1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <string.h>
18
19#define LOG_TAG "DevicesFactoryHalHidl"
20//#define LOG_NDEBUG 0
21
22#include <android/hardware/audio/4.0/IDevice.h>
23#include <media/audiohal/hidl/HalDeathHandler.h>
24#include <utils/Log.h>
25
26#include "ConversionHelperHidl.h"
27#include "DeviceHalHidl.h"
28#include "DevicesFactoryHalHidl.h"
29
30using ::android::hardware::audio::V4_0::IDevice;
31using ::android::hardware::audio::V4_0::Result;
32using ::android::hardware::Return;
33
34namespace android {
35namespace V4_0 {
36
37DevicesFactoryHalHidl::DevicesFactoryHalHidl() {
38    mDevicesFactory = IDevicesFactory::getService();
39    if (mDevicesFactory != 0) {
40        // It is assumed that DevicesFactory is owned by AudioFlinger
41        // and thus have the same lifespan.
42        mDevicesFactory->linkToDeath(HalDeathHandler::getInstance(), 0 /*cookie*/);
43    } else {
44        ALOGE("Failed to obtain IDevicesFactory service, terminating process.");
45        exit(1);
46    }
47    // The MSD factory is optional
48    mDevicesFactoryMsd = IDevicesFactory::getService(AUDIO_HAL_SERVICE_NAME_MSD);
49    // TODO: Register death handler, and add 'restart' directive to audioserver.rc
50}
51
52DevicesFactoryHalHidl::~DevicesFactoryHalHidl() {
53}
54
55status_t DevicesFactoryHalHidl::openDevice(const char *name, sp<DeviceHalInterface> *device) {
56    if (mDevicesFactory == 0) return NO_INIT;
57    Result retval = Result::NOT_INITIALIZED;
58    Return<void> ret = mDevicesFactory->openDevice(
59            name,
60            [&](Result r, const sp<IDevice>& result) {
61                retval = r;
62                if (retval == Result::OK) {
63                    *device = new DeviceHalHidl(result);
64                }
65            });
66    if (ret.isOk()) {
67        if (retval == Result::OK) return OK;
68        else if (retval == Result::INVALID_ARGUMENTS) return BAD_VALUE;
69        else return NO_INIT;
70    }
71    return FAILED_TRANSACTION;
72}
73
74} // namespace V4_0
75} // namespace android
76