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
30 using ::android::hardware::audio::V2_0::IDevice;
31 using ::android::hardware::audio::V2_0::Result;
32 using ::android::hardware::Return;
33
34 namespace android {
35
DevicesFactoryHalHidl()36 DevicesFactoryHalHidl::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 // The MSD factory is optional
47 mDevicesFactoryMsd = IDevicesFactory::getService(AUDIO_HAL_SERVICE_NAME_MSD);
48 // TODO: Register death handler, and add 'restart' directive to audioserver.rc
49 }
50
~DevicesFactoryHalHidl()51 DevicesFactoryHalHidl::~DevicesFactoryHalHidl() {
52 }
53
54 // static
nameFromHal(const char * name,IDevicesFactory::Device * device)55 status_t DevicesFactoryHalHidl::nameFromHal(const char *name, IDevicesFactory::Device *device) {
56 if (strcmp(name, AUDIO_HARDWARE_MODULE_ID_PRIMARY) == 0) {
57 *device = IDevicesFactory::Device::PRIMARY;
58 return OK;
59 } else if(strcmp(name, AUDIO_HARDWARE_MODULE_ID_A2DP) == 0) {
60 *device = IDevicesFactory::Device::A2DP;
61 return OK;
62 } else if(strcmp(name, AUDIO_HARDWARE_MODULE_ID_USB) == 0) {
63 *device = IDevicesFactory::Device::USB;
64 return OK;
65 } else if(strcmp(name, AUDIO_HARDWARE_MODULE_ID_REMOTE_SUBMIX) == 0) {
66 *device = IDevicesFactory::Device::R_SUBMIX;
67 return OK;
68 } else if(strcmp(name, AUDIO_HARDWARE_MODULE_ID_STUB) == 0) {
69 *device = IDevicesFactory::Device::STUB;
70 return OK;
71 }
72 ALOGE("Invalid device name %s", name);
73 return BAD_VALUE;
74 }
75
openDevice(const char * name,sp<DeviceHalInterface> * device)76 status_t DevicesFactoryHalHidl::openDevice(const char *name, sp<DeviceHalInterface> *device) {
77 if (mDevicesFactory == 0) return NO_INIT;
78 IDevicesFactory::Device hidlDevice;
79 status_t status = nameFromHal(name, &hidlDevice);
80 if (status != OK) return status;
81 Result retval = Result::NOT_INITIALIZED;
82 Return<void> ret = mDevicesFactory->openDevice(
83 hidlDevice,
84 [&](Result r, const sp<IDevice>& result) {
85 retval = r;
86 if (retval == Result::OK) {
87 *device = new DeviceHalHidl(result);
88 }
89 });
90 if (ret.isOk()) {
91 if (retval == Result::OK) return OK;
92 else if (retval == Result::INVALID_ARGUMENTS) return BAD_VALUE;
93 else return NO_INIT;
94 }
95 return FAILED_TRANSACTION;
96 }
97
98 } // namespace android
99