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/*
* Copyright (C) 2016 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.
*/
#include <string.h>
#include <vector>
#define LOG_TAG "DevicesFactoryHalHidl"
//#define LOG_NDEBUG 0
#include PATH(android/hardware/audio/FILE_VERSION/IDevice.h)
#include <media/audiohal/hidl/HalDeathHandler.h>
#include <utils/Log.h>
#include "ConversionHelperHidl.h"
#include "DeviceHalHidl.h"
#include "DevicesFactoryHalHidl.h"
using ::android::hardware::audio::CPP_VERSION::IDevice;
using ::android::hardware::audio::CPP_VERSION::Result;
using ::android::hardware::Return;
namespace android {
namespace CPP_VERSION {
DevicesFactoryHalHidl::DevicesFactoryHalHidl(sp<IDevicesFactory> devicesFactory) {
ALOG_ASSERT(devicesFactory != nullptr, "Provided IDevicesFactory service is NULL");
mDeviceFactories.push_back(devicesFactory);
if (MAJOR_VERSION >= 4) {
// The MSD factory is optional and only available starting at HAL 4.0
sp<IDevicesFactory> msdFactory{IDevicesFactory::getService(AUDIO_HAL_SERVICE_NAME_MSD)};
if (msdFactory) {
mDeviceFactories.push_back(msdFactory);
}
}
for (const auto& factory : mDeviceFactories) {
// It is assumed that the DevicesFactoryHalInterface instance is owned
// by AudioFlinger and thus have the same lifespan.
factory->linkToDeath(HalDeathHandler::getInstance(), 0 /*cookie*/);
}
}
#if MAJOR_VERSION == 2
static IDevicesFactory::Device idFromHal(const char *name, status_t* status) {
*status = OK;
if (strcmp(name, AUDIO_HARDWARE_MODULE_ID_PRIMARY) == 0) {
return IDevicesFactory::Device::PRIMARY;
} else if(strcmp(name, AUDIO_HARDWARE_MODULE_ID_A2DP) == 0) {
return IDevicesFactory::Device::A2DP;
} else if(strcmp(name, AUDIO_HARDWARE_MODULE_ID_USB) == 0) {
return IDevicesFactory::Device::USB;
} else if(strcmp(name, AUDIO_HARDWARE_MODULE_ID_REMOTE_SUBMIX) == 0) {
return IDevicesFactory::Device::R_SUBMIX;
} else if(strcmp(name, AUDIO_HARDWARE_MODULE_ID_STUB) == 0) {
return IDevicesFactory::Device::STUB;
}
ALOGE("Invalid device name %s", name);
*status = BAD_VALUE;
return {};
}
#elif MAJOR_VERSION >= 4
static const char* idFromHal(const char *name, status_t* status) {
*status = OK;
return name;
}
#endif
status_t DevicesFactoryHalHidl::openDevice(const char *name, sp<DeviceHalInterface> *device) {
if (mDeviceFactories.empty()) return NO_INIT;
status_t status;
auto hidlId = idFromHal(name, &status);
if (status != OK) return status;
Result retval = Result::NOT_INITIALIZED;
for (const auto& factory : mDeviceFactories) {
Return<void> ret = factory->openDevice(
hidlId,
[&](Result r, const sp<IDevice>& result) {
retval = r;
if (retval == Result::OK) {
*device = new DeviceHalHidl(result);
}
});
if (!ret.isOk()) return FAILED_TRANSACTION;
switch (retval) {
// Device was found and was initialized successfully.
case Result::OK: return OK;
// Device was found but failed to initalize.
case Result::NOT_INITIALIZED: return NO_INIT;
// Otherwise continue iterating.
default: ;
}
}
ALOGW("The specified device name is not recognized: \"%s\"", name);
return BAD_VALUE;
}
} // namespace CPP_VERSION
} // namespace android