Android HIDL lshal

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最新推荐文章于 2025-02-26 19:03:26 发布

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LSHAL是一个用于列出所有HAL服务和直通实现的Android设备端工具，它能生成设备清单文件。此博客详细介绍了如何使用lshal，并展示了设备上注册的各种硬件抽象层（HIDL）服务，如音频、相机、电源管理等。通过lshal生成的设备清单有助于理解设备支持的硬件服务。

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https://source.android.google.cn/devices/architecture/vintf/resources?hl=zh-cn

LSHAL
LSHAL 是一种设备端工具，可以列出向 hwservicemanager 注册的所有 HAL 以及设备上所有可用的直通实现（例如 android.hardware.foo@1.0-impl.so）。它还可以根据该列表生成设备清单文件：

adb shell su 0 /system/bin/lshal –init-vintf

130|rk3399pro_firefly_aiojd4:/ # lshal
All binderized services (registered services through hwservicemanager)
Interface Thread Use Server Clients
android.frameworks.displayservice@1.0::IDisplayService/default 0/1 279 237
android.frameworks.schedulerservice@1.0::ISchedulingPolicyService/default 0/4 577 237
android.frameworks.sensorservice@1.0::ISensorManager/default 0/4 577 237
android.hardware.audio.effect@2.0::IEffectsFactory/default 0/3 261 388 237
android.hardware.audio@2.0::IDevicesFactory/default 0/3 261 388 237
android.hardware.bluetooth@1.0::IBluetoothHci/default 0/2 262 237
android.hardware.camera.provider@2.4::ICameraProvider/legacy/0 0/3 263 389 237
android.hardware.cas@1.0::IMediaCasService/default 0/2 264 237
android.hardware.configstore@1.0::ISurfaceFlingerConfigs/default 0/2 265 718 1200 739 944 577 279 237
android.hardware.drm@1.0::ICryptoFactory/default 0/2 266 237
android.hardware.drm@1.0::ICryptoFactory/widevine 0/2 267 237
android.hardware.drm@1.0::IDrmFactory/default 0/2 266 237
android.hardware.drm@1.0::IDrmFactory/widevine 0/2 267 237
android.hardware.gnss@1.0::IGnss/default 0/1 259 577 237
android.hardware.graphics.allocator@2.0::IAllocator/default 0/4 269 263 279 237
android.hardware.graphics.composer@2.1::IComposer/default 0/4 270 279 237
android.hardware.keymaster@3.0::IKeymasterDevice/default 0/1 250 393 237
android.hardware.light@2.0::ILight/default 0/1 271 577 237
android.hardware.media.omx@1.0::IOmx/default 0/5 402 237
android.hardware.media.omx@1.0::IOmxStore/default 0/5 402 237
android.hardware.neuralnetworks@1.0::IDevice/armnn 0/1 272 237
android.hardware.neuralnetworks@1.0::IDevice/ovx 0/2 273 237
android.hardware.power@1.0::IPower/default 0/1 274 577 237
android.hardware.sensors@1.0::ISensors/default 1/2 275 577 237
android.hardware.soundtrigger@2.0::ISoundTriggerHw/default 0/3 261 388 237
android.hardware.wifi@1.0::IWifi/default 0/1 276 577 237
android.hardware.wifi@1.1::IWifi/default 0/1 276 577 237
android.hidl.allocator@1.0::IAllocator/ashmem 0/1 260 263 237
android.hidl.base@1.0::IBase/armnn 0/1 272 237
android.hidl.base@1.0::IBase/ashmem 0/1 260 263 237
android.hidl.base@1.0::IBase/default 0/4 577 237
android.hidl.base@1.0::IBase/legacy/0 0/3 263 389 237
android.hidl.base@1.0::IBase/ovx 0/2 273 237
android.hidl.base@1.0::IBase/widevine 0/2 267 237
android.hidl.manager@1.0::IServiceManager/default 1/1 237 577
android.hidl.manager@1.1::IServiceManager/default 1/1 237 577
android.hidl.token@1.0::ITokenManager/default 1/1 237
android.system.net.netd@1.0::INetd/default 0/1 398 237
android.system.wifi.keystore@1.0::IKeystore/default 0/1 393 237

All interfaces that getService() has ever return as a passthrough interface;
PIDs / processes shown below might be inaccurate because the process
might have relinquished the interface or might have died.
The Server / Server CMD column can be ignored.
The Clients / Clients CMD column shows all process that have ever dlopen'ed
the library and successfully fetched the passthrough implementation.
Interface Thread Use Server Clients
android.hardware.audio.effect@2.0::IEffectsFactory/default N/A 261 261
android.hardware.audio@2.0::IDevicesFactory/default N/A 261 261
android.hardware.bluetooth@1.0::IBluetoothHci/default N/A 262 262
android.hardware.camera.provider@2.4::ICameraProvider/legacy/0 N/A 263 263
android.hardware.drm@1.0::ICryptoFactory/default N/A 266 266
android.hardware.drm@1.0::IDrmFactory/default N/A 266 266
android.hardware.gnss@1.0::IGnss/default N/A 259 259
android.hardware.graphics.allocator@2.0::IAllocator/default N/A 269 269
android.hardware.graphics.composer@2.1::IComposer/default N/A 270 270
android.hardware.graphics.mapper@2.0::IMapper/default N/A N/A 263 270 279 577 718 739 944 1200
android.hardware.keymaster@3.0::IKeymasterDevice/default N/A 250 250
android.hardware.light@2.0::ILight/default N/A 271 271
android.hardware.power@1.0::IPower/default N/A 274 274
android.hardware.sensors@1.0::ISensors/default N/A 275 275
android.hardware.soundtrigger@2.0::ISoundTriggerHw/default N/A 261 261
android.hidl.memory@1.0::IMapper/ashmem N/A N/A 397 402 577 739

All available passthrough implementations (all -impl.so files)
Interface Thread Use Server Clients
android.hardware.audio.effect@2.0::I*/* (/vendor/lib/hw/) N/A N/A 261
android.hardware.audio.effect@2.0::I*/* (/vendor/lib64/hw/) N/A N/A
android.hardware.audio@2.0::I*/* (/vendor/lib/hw/) N/A N/A 261
android.hardware.audio@2.0::I*/* (/vendor/lib64/hw/) N/A N/A
android.hardware.bluetooth@1.0::I*/* (/vendor/lib/hw/) N/A N/A
android.hardware.bluetooth@1.0::I*/* (/vendor/lib64/hw/) N/A N/A 262
android.hardware.camera.provider@2.4::I*/* (/vendor/lib/hw/) N/A N/A 263
android.hardware.camera.provider@2.4::I*/* (/vendor/lib64/hw/) N/A N/A
android.hardware.drm@1.0::I*/* (/vendor/lib/hw/) N/A N/A 266
android.hardware.gnss@1.0::I*/* (/vendor/lib/hw/) N/A N/A
android.hardware.gnss@1.0::I*/* (/vendor/lib64/hw/) N/A N/A 259
android.hardware.graphics.allocator@2.0::I*/* (/vendor/lib/hw/) N/A N/A
android.hardware.graphics.allocator@2.0::I*/* (/vendor/lib64/hw/) N/A N/A 269
android.hardware.graphics.composer@2.1::I*/* (/vendor/lib/hw/) N/A N/A
android.hardware.graphics.composer@2.1::I*/* (/vendor/lib64/hw/) N/A N/A 270
android.hardware.graphics.mapper@2.0::I*/* (/vendor/lib/hw/) N/A N/A 263 387
android.hardware.graphics.mapper@2.0::I*/* (/vendor/lib64/hw/) N/A N/A 270 279 386 577 718 739 930 944 1162 1176 1200 1216 1255 1289 1323 1341 1364 1382
android.hardware.keymaster@3.0::I*/* (/vendor/lib/hw/) N/A N/A
android.hardware.keymaster@3.0::I*/* (/vendor/lib64/hw/) N/A N/A 250
android.hardware.light@2.0::I*/* (/vendor/lib/hw/) N/A N/A
android.hardware.light@2.0::I*/* (/vendor/lib64/hw/) N/A N/A 271
android.hardware.power@1.0::I*/* (/vendor/lib/hw/) N/A N/A
android.hardware.power@1.0::I*/* (/vendor/lib64/hw/) N/A N/A 274
android.hardware.sensors@1.0::I*/* (/vendor/lib/hw/) N/A N/A
android.hardware.sensors@1.0::I*/* (/vendor/lib64/hw/) N/A N/A 275
android.hardware.soundtrigger@2.0::I*/* (/vendor/lib/hw/) N/A N/A 261
android.hidl.memory@1.0::I*/* (/system/lib/hw/) N/A N/A 397 402
android.hidl.memory@1.0::I*/* (/system/lib64/hw/) N/A N/A 577 739

rk3399pro_firefly_aiojd4:/ #
rk3399pro_firefly_aiojd4:/ #

130|rk3399pro_firefly_aiojd4:/ # /system/bin/lshal --init-vintf

<manifest version="1.0" type="device">
<hal format="hidl">
<name>android.hardware.audio</name>
<transport>hwbinder</transport>
<version>2.0</version>
<interface>
<name>IDevicesFactory</name>
<instance>default</instance>
</interface>
</hal>
<hal format="hidl">
<name>android.hardware.audio.effect</name>
<transport>hwbinder</transport>
<version>2.0</version>
<interface>
<name>IEffectsFactory</name>
<instance>default</instance>
</interface>
</hal>
<hal format="hidl">
<name>android.hardware.bluetooth</name>
<transport>hwbinder</transport>
<version>1.0</version>
<interface>
<name>IBluetoothHci</name>
<instance>default</instance>
</interface>
</hal>
<hal format="hidl">
<name>android.hardware.camera.provider</name>
<transport>hwbinder</transport>
<version>2.4</version>
<interface>
<name>ICameraProvider</name>
<instance>legacy/0</instance>
</interface>
</hal>
<hal format="hidl">
<name>android.hardware.cas</name>
<transport>hwbinder</transport>
<version>1.0</version>
<interface>
<name>IMediaCasService</name>
<instance>default</instance>
</interface>
</hal>
<hal format="hidl">
<name>android.hardware.configstore</name>
<transport>hwbinder</transport>
<version>1.0</version>
<interface>
<name>ISurfaceFlingerConfigs</name>
<instance>default</instance>
</interface>
</hal>
<hal format="hidl">
<name>android.hardware.drm</name>
<transport>hwbinder</transport>
<version>1.0</version>
<interface>
<name>ICryptoFactory</name>
<instance>default</instance>
<instance>widevine</instance>
</interface>
<interface>
<name>IDrmFactory</name>
<instance>default</instance>
<instance>widevine</instance>
</interface>
</hal>
<hal format="hidl">
<name>android.hardware.gnss</name>
<transport>hwbinder</transport>
<version>1.0</version>
<interface>
<name>IGnss</name>
<instance>default</instance>
</interface>
</hal>
<hal format="hidl">
<name>android.hardware.graphics.allocator</name>
<transport>hwbinder</transport>
<version>2.0</version>
<interface>
<name>IAllocator</name>
<instance>default</instance>
</interface>
</hal>
<hal format="hidl">
<name>android.hardware.graphics.composer</name>
<transport>hwbinder</transport>
<version>2.1</version>
<interface>
<name>IComposer</name>
<instance>default</instance>
</interface>
</hal>
<hal format="hidl">
<name>android.hardware.graphics.mapper</name>
<transport arch="32+64">passthrough</transport>
<version>2.0</version>
<interface>
<name>IMapper</name>
<instance>default</instance>
</interface>
</hal>
<hal format="hidl">
<name>android.hardware.keymaster</name>
<transport>hwbinder</transport>
<version>3.0</version>
<interface>
<name>IKeymasterDevice</name>
<instance>default</instance>
</interface>
</hal>
<hal format="hidl">
<name>android.hardware.light</name>
<transport>hwbinder</transport>
<version>2.0</version>
<interface>
<name>ILight</name>
<instance>default</instance>
</interface>
</hal>
<hal format="hidl">
<name>android.hardware.media.omx</name>
<transport>hwbinder</transport>
<version>1.0</version>
<interface>
<name>IOmx</name>
<instance>default</instance>
</interface>
<interface>
<name>IOmxStore</name>
<instance>default</instance>
</interface>
</hal>
<hal format="hidl">
<name>android.hardware.neuralnetworks</name>
<transport>hwbinder</transport>
<version>1.0</version>
<interface>
<name>IDevice</name>
<instance>armnn</instance>
<instance>ovx</instance>
</interface>
</hal>
<hal format="hidl">
<name>android.hardware.power</name>
<transport>hwbinder</transport>
<version>1.0</version>
<interface>
<name>IPower</name>
<instance>default</instance>
</interface>
</hal>
<hal format="hidl">
<name>android.hardware.sensors</name>
<transport>hwbinder</transport>
<version>1.0</version>
<interface>
<name>ISensors</name>
<instance>default</instance>
</interface>
</hal>
<hal format="hidl">
<name>android.hardware.soundtrigger</name>
<transport>hwbinder</transport>
<version>2.0</version>
<interface>
<name>ISoundTriggerHw</name>
<instance>default</instance>
</interface>
</hal>
<hal format="hidl">
<name>android.hardware.wifi</name>
<transport>hwbinder</transport>
<version>1.1</version>
<interface>
<name>IWifi</name>
<instance>default</instance>
</interface>
</hal>
<sepolicy>
<version>0.0</version>
</sepolicy>
</manifest>
rk3399pro_firefly_aiojd4:/ #
rk3399pro_firefly_aiojd4:/ #
rk3399pro_firefly_aiojd4:/ #

https://devarea.com/android-hidl-and-project-treble/#.XTWcS_mAShE

编写客户端要使用该服务，我们将编写一个简单的客户端应用程序通常，它将成为Google编写的Android框架的一部分。例如，如果通用框架想要访问振动器服务：在文件框架/ base / services / core / jni / com_android_server_VibratorService.cpp中

static sp mHal;
 
...
 
mHal = IVibrator::getService();
...
Status retStatus = mHal->on(timeout_ms);
...
Status retStatus = mHal->off();