自 2025 年 3 月 27 日起,我們建議您使用 android-latest-release
而非 aosp-main
建構及貢獻 AOSP。詳情請參閱「Android 開放原始碼計畫變更」。
透過集合功能整理內容
你可以依據偏好儲存及分類內容。
audio_policy_device 結構體參考資料
#include <
audio_policy.h
>
這個結構體的說明文件是由下列檔案產生:
這個頁面中的內容和程式碼範例均受《內容授權》中的授權所規範。Java 與 OpenJDK 是 Oracle 和/或其關係企業的商標或註冊商標。
上次更新時間:2025-07-27 (世界標準時間)。
[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["缺少我需要的資訊","missingTheInformationINeed","thumb-down"],["過於複雜/步驟過多","tooComplicatedTooManySteps","thumb-down"],["過時","outOfDate","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["示例/程式碼問題","samplesCodeIssue","thumb-down"],["其他","otherDown","thumb-down"]],["上次更新時間:2025-07-27 (世界標準時間)。"],[],[],null,["# Android Hardware Abstraction Layer: audio_policy_device Struct Reference\n\naudio_policy_device Struct Reference\n====================================\n\n[Data Fields](#pub-attribs) \naudio_policy_device Struct Reference \n\n`\n#include \u003c\n`[audio_policy.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/audio_policy.h)`\n\u003e\n`\n\n|----------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| Data Fields ----------- ||\n| struct [hw_device_t](/reference/hal/structhw__device__t) | [common](/reference/hal/structaudio__policy__device#a86a0ca82dd3f02023e259b8b5e155dbe) |\n| ||\n| int(\\* | [create_audio_policy](/reference/hal/structaudio__policy__device#a9952e1daea03740f325af622722e4be1) )(const struct [audio_policy_device](/reference/hal/structaudio__policy__device) \\*device, struct [audio_policy_service_ops](/reference/hal/structaudio__policy__service__ops) \\*aps_ops, void \\*service, struct [audio_policy](/reference/hal/structaudio__policy) \\*\\*ap) |\n| ||\n| int(\\* | [destroy_audio_policy](/reference/hal/structaudio__policy__device#a2b9f6df4ad9162b49d2ac1101ac6fa51) )(const struct [audio_policy_device](/reference/hal/structaudio__policy__device) \\*device, struct [audio_policy](/reference/hal/structaudio__policy) \\*ap) |\n| ||\n\n\nDetailed Description\n--------------------\n\n\nDefinition at line\n[422](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/audio_policy.h)\nof file\n[audio_policy.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/audio_policy.h)\n.\n\nField Documentation\n-------------------\n\n\n|-----------------------------------------------------------------|\n| struct [hw_device_t](/reference/hal/structhw__device__t) common |\n\n\nCommon methods of the audio policy device. This\n*must*\nbe the first member of\n[audio_policy_device](/reference/hal/structaudio__policy__device)\nas users of this structure will cast a\n[hw_device_t](/reference/hal/structhw__device__t)\nto\n[audio_policy_device](/reference/hal/structaudio__policy__device)\npointer in contexts where it's known the\n[hw_device_t](/reference/hal/structhw__device__t)\nreferences an\n[audio_policy_device](/reference/hal/structaudio__policy__device)\n.\n\n\nDefinition at line\n[429](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/audio_policy.h)\nof file\n[audio_policy.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/audio_policy.h)\n.\n\n|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| int(\\* create_audio_policy)(const struct [audio_policy_device](/reference/hal/structaudio__policy__device) \\*device, struct [audio_policy_service_ops](/reference/hal/structaudio__policy__service__ops) \\*aps_ops, void \\*service, struct [audio_policy](/reference/hal/structaudio__policy) \\*\\*ap) |\n\n\nDefinition at line\n[431](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/audio_policy.h)\nof file\n[audio_policy.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/audio_policy.h)\n.\n\n|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| int(\\* destroy_audio_policy)(const struct [audio_policy_device](/reference/hal/structaudio__policy__device) \\*device, struct [audio_policy](/reference/hal/structaudio__policy) \\*ap) |\n\n\nDefinition at line\n[436](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/audio_policy.h)\nof file\n[audio_policy.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/audio_policy.h)\n.\n\n*** ** * ** ***\n\nThe documentation for this struct was generated from the following file:\n\n- hardware/libhardware/include/hardware/ [audio_policy.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/audio_policy.h)"]]