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android 音量问题debug方法参考

android stdio导入sdk文件的android.ipr时的过滤文件android.iml

android12 音频流各个阶段dump音频数据

android5-12 以太网和wifi共存的补丁

在一些非root的设备上，app是无法获取到root权限的，对于一些特殊场景，如产测应用，需要具有root权限才能执行一些设备测试操作。本代码修改的思想，是通过创建一个具有root权限的系统服务来代替app执行root权限的操作，然后系统服务通过socket接口接收app传下来的指令，到达间接执行root权限操作。

android设备有各种各样的弹窗，包括系统触发的、app触发的等，客户在使用设备的过程中，这些弹窗非常影响体感，如果设备不是接鼠标操控的，这样关闭弹窗也非常麻烦。本代码修改的思想，是通过设置一个弹窗的白名单，记录在一个数据库中，系统在弹窗时读取白名单，只弹出允许的弹窗，来动态控制。

Rockchip_Developer_Guide_Trust_CN

本文档提供Rockchip平台USB 2.0/3.0模块传输性能分析的方法以及支持的最大传输速率。 本文档将分别对USB Host和USB Device(Peripheral)两部分进行介绍。其中，USB Host将会介绍USB Disk、USB Ethernet以及USB Camera的传输性能分析。USB Device(Peripheral)将会介绍USB MTP、USB MSC(Mass Storage Class)、USB Gadget Webcam、USB Rndis、USB Gadget HID的传输性能分析。

本文档提供 Rockchip 平台 USB PHYs 的开发指南，通过该文档可以更加快速地了解 USB PHYs 的硬件设计框架、主 要寄存器说明、PHY的功耗管理、PHY的tuning流程以及PHY的常见问题处理等。本文档可作为 USB PHYs 驱动开发 的参考文档，但不能替代PHY的手册。

USB Type-C 规范1.2(中文版)

cec规范 CEC 13.7 Deck Control .............................................................................................................. 41 CEC 13.7.1 Messages .............................................................................................................41 CEC 13.7.2 Feature Description..............................................................................................42 CEC 13.7.3 Behavior with Earlier Versions .............................................................................42 CEC 13.8 Tuner Control............................................................................................................. 43 CEC 13.8.1 Messages .............................................................................................................43 CEC 13.8.2 Feature Description..............................................................................................43 CEC 13.8.3 Behavior with Earlier Versions .............................................................................44 CEC 13.9 Vendor Specific Commands..................................................................................... 44 CEC 13.9.1 Messages .............................................................................................................44 CEC 13.9.2 Feature Description..............................................................................................44 CEC 13.9.3 Behavior with Earlier Versions .............................................................................45 CEC 13.10OSD Display ............................................................................................................... 45 CEC 13.10.1 Messages ...........................................................................................................45 CEC 13.10.2 Feature Description............................................................................................46 CEC 13.10.3 Behavior with Earlier Versions ...........................................................................46 CEC 13.11Device OSD Name Transfer.............................................................................

The HYM8563 is a CMOS real time clock/calendar, which provides seconds, minutes, hours, day, date, month, and year information. The number of days in each month and leap years are automatically adjusted. The clock can operate in two modes: one is the 12-hour mode with an AM/PM indicator，the other is the 24-hour mode. The clock/calendar is full binary-coded decimal (BCD). In addition, the HYM8563 contains a programmable clock output, a timer, an alarm, a voltage-low detector. All address and data are transferred serially via I 2C bus and The HYM8563 operates as a slave device on the serial bus. The built-in word address register is incremented automatically after each written or read data byte. The HYM8563 is designed to operate on very low power consumption

概述 DRM全称是Direct Rendering Manager，管理进行显示输出的, buffer分配, 帧缓冲. libdrm库提供了一系列友好的控制封装, 使用户可以方便的进行显示的控制, 但并不是 只能通过libdrm库来 控制drm, 用户可以直接操作drm的ioctl或者是使用framebuffer的 接口实现显示操作. 后面重点介绍kernel态 drm的机制. 以下为drm显示大致框架:

1 概述......................................................................................................................................................2 2 主要支持功能......................................................................................................................................2 3 SDK 获取说明.....................................................................................................................................3 3.1 获取 SDK.............................................................................................................................3 3.2 补充说明..............................................................................................................................4 4 SDK 编译说明.....................................................................................................................................4 4.1 JDK 安装 .............................................................................................................................4 4.2 编译模式..............................................................................................................................4 4.3 代码编译..............................................................................................................................4 4.3.1 uboot 编译步骤...........................................................................................................4 4.3.2 kernel 编译步骤..........................................................................................................4 4.3.3 Android 编译步骤 .......................................................................................................5 5 刷机说明..............................................................................................................................................5

java-7-openjdk-amd64.tar.gz下载

前⾔ 概述 本⽂主要指导读者如何在U-Boot next-dev分⽀进⾏项⽬开发。 读者对象 本⽂档（本指南）主要适⽤于以下⼯程师： 技术⽀持⼯程师 软件开发⼯程师 各芯⽚feature⽀持状态

概述 Trust 作为Rockchip平台SDK里的固件之一，因为涉及安全性和保密性，目前完整源码仅对内部的部分工程师开放 （RK322x/RK3328/RK3368/RK3399/平台的基础功已经开源[0]）。本文档仅对Trust 进行概要介绍（以64位平台 作为范例），意在让读者明白它在整个系统架构中的角色和作用。同时指导读者在实际使用中遇到问题时如何进行 问题收集和反馈。

1 概述......................................................................................................................................................2 2 主要支持功能......................................................................................................................................2 3 SDK 获取说明.....................................................................................................................................3 3.1 获取 SDK.............................................................................................................................3 3.2 补充说明..............................................................................................................................4 4 SDK 编译说明.....................................................................................................................................4 4.1 JDK 安装 .............................................................................................................................4 4.2 编译模式..............................................................................................................................4 4.3 代码编译..............................................................................................................................4 4.3.1 uboot 编译步骤...........................................................................................................4 4.3.2 kernel 编译步骤..........................................................................................................4 4.3.3 Android 编译步骤 .......................................................................................................5 5 刷机说明..............................................................................................................................................5

Welcome to the official Magisk Release / Announcement thread! Installing Magisk will give you ROOT, a super powerful Systemless Interface, Magisk Modules support, and hide from tons of integrity tests like SafetyNet! Magisk does NOT have a website. Do NOT download Magisk from unofficial sites. Official Links: Magisk Github Release Highlights Open Source: 100% open source and easy to build on all Google supported platforms. Magic Mount: Modify system (vendor) without tampering the partitions. MagiskSU: Unleash your device's root access. MagiskHide: Hide Magisk from detections: Google SafetyNet, enterprise / bank system integrity checks, game tamper checks. Resetprop: Modify or delete any system properties, including read-only props. Online Module Repo: Install Magisk Modules from the community driven Magisk Module Repo. Android Version Support Android 4.2+: MagiskSU and Magisk Modules Only (*1) Android 4.4+: All features available (*2) Android 6.0+: MagiskHide guaranteed support (*3) Android 7.0+: MagiskHide full protection Android 9.0+: Magisk Manager full hide capability CLICK TO SHOW CONTENT Instructions Link to Installation Instructions Link to Tutorials (Including OTA Installation and Best Practices for MagiskHide)

Summary The DisplayPort standard specifies an open digital communications interface for use in both internal connections, such as interfaces within a PC or monitor, and external display connections. Suitable external display connections include interfaces between a PC and monitor or projector, between a PC and TV, or between a device such as a DVD player and TV display. DP v1.1a was revised to correct errata items and add clarifications to DP v1.1. DP v1.2 was revised to add enhancements including higher speed operation, more flexible topology management, multiple streams on a single connection, higher speed Auxiliary Channel communications, improved support for audio, and a new smaller connector. It also corrected errors and added clarifications to DP v1.1a. This version corrects errors and adds clarification to DP v1.2. Furthermore, this version adds DP_PWR voltage level options to a downstream DisplayPort device. DP v1.2a was revised to correct errata items and add clarifications to DP v1.2.

Magisk Downloads | Documentation | XDA Thread Introduction Magisk is a suite of open source tools for customizing Android, supporting devices higher than Android 4.2 (API 17). It covers the fundamental parts for Android customization: root, boot scripts, SELinux patches, AVB2.0 / dm-verity / forceencrypt removals etc. Furthermore, Magisk provides a Systemless Interface to alter the system (or vendor) arbitrarily while the actual partitions stay completely intact. With its systemless nature along with several other hacks, Magisk can almost perfectly hide modifications within userspace. Note that since 2020.3, the CTS check of Google's SafetyNet API will NOT pass. Bug Reports Only reports using debug canary builds will be accepted. Access canary builds by upgrading to either canary Magisk Manager: Canary Manager (Release) Canary Manager (Debug) For installation issues, upload both boot image and install logs. For Magisk issues, upload boot logcat or dmesg. For Magisk Manager crashes, record and upload the logcat when the crash occurs. Building Environment Requirements Python 3: run build.py script Java Development Kit (JDK) 8: Compile Magisk Manager and sign zips Latest Android SDK: set ANDROID_HOME environment variable to the path to Android SDK Android NDK: Install NDK along with SDK ($ANDROID_HOME/ndk-bundle), or optionally specify a custom path ANDROID_NDK_HOME (Windows Only) Python package Colorama: Install with pip install colorama, used for ANSI color codes

1 概述......................................................................................................................................................2 2 主要支持功能......................................................................................................................................2 3 SDK 获取说明.....................................................................................................................................3 3.1 获取 SDK.............................................................................................................................3 3.2 补充说明..............................................................................................................................4 4 SDK 编译说明.....................................................................................................................................4 4.1 JDK 安装 .............................................................................................................................4 4.2 编译模式..............................................................................................................................4 4.3 代码编译..............................................................................................................................4 4.3.1 uboot 编译步骤...........................................................................................................4 4.3.2 kernel 编译步骤..........................................................................................................4 4.3.3 Android 编译步骤 .......................................................................................................5 5 刷机说明..............................................................................................................................................5

openjdk-8-jdk_8u45-b14-1_amd64.deb