diff --git a/frameworks/base/packages/SystemUI/src/com/android/systemui/usb/UsbPermissionActivity.java b/frameworks/base/packages/SystemUI/src/com/android/systemui/usb/UsbPermissionActivity.java index 1e69fc5..e0bb559 100755 --- a/frameworks/base/packages/SystemUI/src/com/android/systemui/usb...
usb有config,然后下面有多个interface,interface下面有多个endpoint。根据interface的class和subclass值可以区分interface类型,比如video的class值是14,audio的class值是1等,根据这个可以识别复合设备的interface。然后每个interface下面有多个endpoint,endpoint存在address,这个是数据传输的通道。每个endpoint存在不同的数据格式,比如...
int interfaceCount = device.getInterfaceCount(); tvInfo.append("interfaceCount " + interfaceCount + "\n"); for (int interfaceIndex = 0; interfaceIndex < interfaceCount; interfaceIndex++) { UsbInterface usbInterface = device.getInterface(interfaceIndex); tvInfo.append("===>>"+ usbInterface....
最近遇到一些场景,Android 需要支持通话音量下从一些usb外设采集音频数据。对于Android,通话音量下,需要主动连接设备,否则会默认从手机麦克风采集。 过程 找了几个业界的产品,发现目前只有微信,抖音支持该能力。通过直接dumpsys audio看日志: 11-0720:01:53:415setWiredDeviceConnectionState(type:80001000state:DEVICE_STA...
.bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, usb_audio_ids); /* * entry point for linux usb interface */ static struct usb_driver usb_audio_driver = { .name = "snd-usb-audio", ...
有了usb audio,就可以当做windows/ios/mac/linux/android的声卡,直接当成这些手机/电脑的扬声器。 优点二:真无损内录 传统录制电钢琴需要使用大三芯线材。硬音源产生的数字信号,需要通过电钢琴的DAC,再通过放大器、再通过线材、再通过声卡放大器、再通过声卡ADC才能以数字信号被电脑编码存储。每一环都有音质的损失。
For our media player, USB Audio Player PRO, the driver allows to play in bit-perfect, something that the Android driver will never do. The following Android apps of eXtream Software Development have this driver embedded. Note that you cannot use this driver to play or record audio in other...
Professional: The sound card is a professional usb interface, which can be used to record music and live broadcasting. Compatibility: The audio interface is compatible with most usb-c devices, such as ios, android, mac and other operating systems. Care is simple: The sound card is easy to ...
Android.Health.Connect.DataTypes.Units Android.Icu.Lang Android.Icu.Math Android.Icu.Number Android.Icu.Text Android.Icu.Util Android.InputMethodServices Android.Locations Android.Locations.Altitude Android.Locations.Provider Android.Media Android.Media.Audiofx ...
Volt Audio Interface|Android Audio Download|7.1 Channel Sound Simulation:Enhance your audio experience with Xear 3D Sound Simulation, turning stereo into a 7.1 channel environment. Plug and Play Convenience:Effortless setup with Plug and Play functionality, no drivers required for Windows, Linux, or ...