Documentation for HIDL interfaces | Android Open Source Project

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<a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Trade Federation</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/reference/tradefed/classes" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/classes" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/classes" ><span class="devsite-nav-text" tooltip>Class Index</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/packages" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/packages" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/packages" ><span class="devsite-nav-text" tooltip>Package Index</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/compatibility/common/tradefed/testtype/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/compatibility/common/tradefed/testtype/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/compatibility/common/tradefed/testtype/package-summary" ><span class="devsite-nav-text" tooltip>com.android.compatibility.common.tradefed.testtype</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/auth/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/auth/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/auth/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.auth</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/build/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/build/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/build/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.build</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/build/cache/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/build/cache/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/build/cache/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.build.cache</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/build/content/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/build/content/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/build/content/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.build.content</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/build/gcs/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/build/gcs/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/build/gcs/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.build.gcs</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/cache/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/cache/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/cache/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.cache</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/cache/remote/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/cache/remote/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/cache/remote/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.cache.remote</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/cluster/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/cluster/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/cluster/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.cluster</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/command/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/command/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/command/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.command</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/command/console/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/command/console/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/command/console/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.command.console</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/command/remote/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/command/remote/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/command/remote/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.command.remote</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/config/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/config/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/config/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.config</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/config/filter/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/config/filter/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/config/filter/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.config.filter</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/config/gcs/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/config/gcs/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/config/gcs/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.config.gcs</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/config/proxy/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/config/proxy/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/config/proxy/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.config.proxy</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/config/remote/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/config/remote/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/config/remote/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.config.remote</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/config/yaml/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/config/yaml/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/config/yaml/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.config.yaml</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/dependency/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/dependency/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/dependency/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.dependency</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/device/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/device/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/device/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.device</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/device/battery/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/device/battery/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/device/battery/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.device.battery</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/device/cloud/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/device/cloud/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/device/cloud/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.device.cloud</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/device/connection/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/device/connection/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/device/connection/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.device.connection</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/device/contentprovider/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/device/contentprovider/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/device/contentprovider/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.device.contentprovider</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/device/helper/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/device/helper/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/device/helper/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.device.helper</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/device/internal/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/device/internal/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/device/internal/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.device.internal</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/device/metric/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/device/metric/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/device/metric/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.device.metric</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/device/recovery/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/device/recovery/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/device/recovery/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.device.recovery</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/error/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/error/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/error/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.error</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/host/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/host/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/host/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.host</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/host/gcs/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/host/gcs/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/host/gcs/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.host.gcs</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/invoker/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/invoker/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/invoker/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.invoker</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/invoker/logger/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/invoker/logger/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/invoker/logger/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.invoker.logger</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/invoker/sandbox/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/invoker/sandbox/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/invoker/sandbox/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.invoker.sandbox</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/invoker/shard/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/invoker/shard/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/invoker/shard/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.invoker.shard</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/invoker/shard/token/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/invoker/shard/token/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/invoker/shard/token/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.invoker.shard.token</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/invoker/tracing/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/invoker/tracing/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/invoker/tracing/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.invoker.tracing</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/lite/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/lite/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/lite/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.lite</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/log/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/log/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/log/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.log</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/monitoring/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/monitoring/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/monitoring/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.monitoring</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/monitoring/collector/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/monitoring/collector/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/monitoring/collector/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.monitoring.collector</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/postprocessor/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /reference/tradefed/com/android/tradefed/postprocessor/package-summary" track-type="bookNav" track-name="click" track-metadata-eventdetail="/reference/tradefed/com/android/tradefed/postprocessor/package-summary" ><span class="devsite-nav-text" tooltip>com.android.tradefed.postprocessor</span></a></li><li class="devsite-nav-item"><a href="/reference/tradefed/com/android/tradefed/result/package-summary" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: 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preferences. </span> </devsite-feature-tooltip> <div class="devsite-page-title-meta"><devsite-view-release-notes></devsite-view-release-notes></div> <devsite-toc class="devsite-nav" depth="2" devsite-toc-embedded > </devsite-toc> <div class="devsite-article-body clearfix ">  <p>The HAL Interface Description Language (HIDL) specifies the interface between a HAL and its users. It defines types and method calls, collected into interfaces and packages. HIDL is a system for communicating between codebases that may be compiled independently and is intended for inter-process communication. See the HIDL guides.</p> <p>The autogenerated documentation for the HIDL (.hal) files have been deprecated. For the details of the interface specifications, consult the HIDL source files in AOSP.</p> <p>HIDL interface files are in four different locations in AOSP:</p> <ul> <li>/hardware/interfaces</li> <li>/frameworks/hardware/interfaces</li> <li>/system/hardware/interfaces</li> <li>/system/libhidl/transport</li> </ul> <p>See the sections below for links to the HIDL source files in each location.</p> <h2 id="hardwareinterfaces" data-text="/hardware/interfaces" tabindex="-1">/hardware/interfaces</h2> <ul> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/master">/hardware/interfaces/</a> <ul> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/atrace/">atrace/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/audio/">audio/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/authsecret/">authsecret/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/automotive/">automotive/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/biometrics/">biometrics/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/bluetooth/">bluetooth/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/boot/">boot/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/broadcastradio/">broadcastradio/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/camera/">camera/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/cas/">cas/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/compatibility_matrices/">compatibility_matrices/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/configstore/">configstore/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/confirmationui/">confirmationui/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/contexthub/">contexthub/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/current.txt">current.txt</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/drm/">drm/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/dumpstate/">dumpstate/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/fastboot/">fastboot/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/gatekeeper/">gatekeeper/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/gnss/">gnss/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/graphics/">graphics/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/health/">health/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/ir/">ir/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/keymaster/">keymaster/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/light/">light/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/media/">media/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/memtrack/">memtrack/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/neuralnetworks/">neuralnetworks/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/nfc/">nfc/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/oemlock/">oemlock/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/power/">power/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/prebuilt_hashes/">prebuilt_hashes/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/radio/">radio/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/renderscript/">renderscript/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/secure_element/">secure_element/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/sensors/">sensors/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/soundtrigger/">soundtrigger/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/tests/">tests/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/tetheroffload/">tetheroffload/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/thermal/">thermal/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/tv/">tv/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/usb/">usb/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/vibrator/">vibrator/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/vr/">vr/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/weaver/">weaver/</a></li> <li><a href="https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/master/wifi/">wifi/</a></li> </ul></li> </ul> <h2 id="frameworkshardwareinterfaces" data-text="/frameworks/hardware/interfaces" tabindex="-1">/frameworks/hardware/interfaces</h2> <ul> <li><a href="https://android.googlesource.com/platform/frameworks/hardware/interfaces/+/master">/frameworks/hardware/interfaces/</a> <ul> <li><a href="https://android.googlesource.com/platform/frameworks/hardware/interfaces/+/master/displayservice/">displayservice/</a></li> <li><a href="https://android.googlesource.com/platform/frameworks/hardware/interfaces/+/master/schedulerservice/">schedulerservice/</a></li> <li><a href="https://android.googlesource.com/platform/frameworks/hardware/interfaces/+/master/sensorservice/">sensorservice/</a></li> <li><a href="https://android.googlesource.com/platform/frameworks/hardware/interfaces/+/master/vr/">vr/</a></li> </ul></li> </ul> <h2 id="systemhardwareinterfaces" data-text="/system/hardware/interfaces" tabindex="-1">/system/hardware/interfaces</h2> <ul> <li><a href="https://android.googlesource.com/platform/system/hardware/interfaces/+/master">/system/hardware/interfaces/</a> <ul> <li><a href="https://android.googlesource.com/platform/system/hardware/interfaces/+/master/ashmem/">ashmem/</a></li> <li><a href="https://android.googlesource.com/platform/system/hardware/interfaces/+/master/net/">net/</a></li> <li><a href="https://android.googlesource.com/platform/system/hardware/interfaces/+/master/suspend/">suspend/</a></li> <li><a href="https://android.googlesource.com/platform/system/hardware/interfaces/+/master/wifi/">wifi/</a></li> </ul></li> </ul> <h2 id="systemlibhidltransport" data-text="/system/libhidl/transport" tabindex="-1">/system/libhidl/transport</h2> <ul> <li><a href="https://android.googlesource.com/platform/system/libhidl/+/master/transport/">/system/libhidl/transport/</a> <ul> <li><a href="https://android.googlesource.com/platform/system/libhidl/+/master/transport/allocator/">allocator/</a></li> <li><a href="https://android.googlesource.com/platform/system/libhidl/+/master/transport/base/">base/</a></li> <li><a href="https://android.googlesource.com/platform/system/libhidl/+/master/transport/current.txt">current.txt</a></li> <li><a href="https://android.googlesource.com/platform/system/libhidl/+/master/transport/include/">include/</a></li> <li><a href="https://android.googlesource.com/platform/system/libhidl/+/master/transport/manager/">manager/</a></li> <li><a href="https://android.googlesource.com/platform/system/libhidl/+/master/transport/memory/">memory/</a></li> <li><a href="https://android.googlesource.com/platform/system/libhidl/+/master/transport/safe_union/">safe_union/</a></li> <li><a href="https://android.googlesource.com/platform/system/libhidl/+/master/transport/token/">token/</a></li> </ul></li> </ul> </div> <devsite-thumb-rating position="footer"> </devsite-thumb-rating> <div class="devsite-floating-action-buttons"> </div> </article> <devsite-content-footer class="nocontent"> <p>Content and code samples on this page are subject to the licenses described in the <a href="/license">Content License</a>. 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