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/2.0/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::V2_0::IDevice;
31using ::android::hardware::audio::V2_0::Result;
32using ::android::hardware::Return;
33
34namespace android {
35
36DevicesFactoryHalHidl::DevicesFactoryHalHidl() {
37    mDevicesFactory = IDevicesFactory::getService();
38    if (mDevicesFactory != 0) {
39        // It is assumed that DevicesFactory is owned by AudioFlinger
40        // and thus have the same lifespan.
41        mDevicesFactory->linkToDeath(HalDeathHandler::getInstance(), 0 /*cookie*/);
42    } else {
43        ALOGE("Failed to obtain IDevicesFactory service, terminating process.");
44        exit(1);
45    }
46}
47
48DevicesFactoryHalHidl::~DevicesFactoryHalHidl() {
49}
50
51// static
52status_t DevicesFactoryHalHidl::nameFromHal(const char *name, IDevicesFactory::Device *device) {
53    if (strcmp(name, AUDIO_HARDWARE_MODULE_ID_PRIMARY) == 0) {
54        *device = IDevicesFactory::Device::PRIMARY;
55        return OK;
56    } else if(strcmp(name, AUDIO_HARDWARE_MODULE_ID_A2DP) == 0) {
57        *device = IDevicesFactory::Device::A2DP;
58        return OK;
59    } else if(strcmp(name, AUDIO_HARDWARE_MODULE_ID_USB) == 0) {
60        *device = IDevicesFactory::Device::USB;
61        return OK;
62    } else if(strcmp(name, AUDIO_HARDWARE_MODULE_ID_REMOTE_SUBMIX) == 0) {
63        *device = IDevicesFactory::Device::R_SUBMIX;
64        return OK;
65    } else if(strcmp(name, AUDIO_HARDWARE_MODULE_ID_STUB) == 0) {
66        *device = IDevicesFactory::Device::STUB;
67        return OK;
68    }
69    ALOGE("Invalid device name %s", name);
70    return BAD_VALUE;
71}
72
73status_t DevicesFactoryHalHidl::openDevice(const char *name, sp<DeviceHalInterface> *device) {
74    if (mDevicesFactory == 0) return NO_INIT;
75    IDevicesFactory::Device hidlDevice;
76    status_t status = nameFromHal(name, &hidlDevice);
77    if (status != OK) return status;
78    Result retval = Result::NOT_INITIALIZED;
79    Return<void> ret = mDevicesFactory->openDevice(
80            hidlDevice,
81            [&](Result r, const sp<IDevice>& result) {
82                retval = r;
83                if (retval == Result::OK) {
84                    *device = new DeviceHalHidl(result);
85                }
86            });
87    if (ret.isOk()) {
88        if (retval == Result::OK) return OK;
89        else if (retval == Result::INVALID_ARGUMENTS) return BAD_VALUE;
90        else return NO_INIT;
91    }
92    return FAILED_TRANSACTION;
93}
94
95} // namespace android
96