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https://source.android.com/devices/audio/usb
Android 4.1 (API level 16) added limited support for audio playback to the host. While in accessory mode, Android automatically routes its audio output to USB. That is, the Android device serves as a data source to the host, for example a dock. Accessory mode audio has these features:
https://source.android.com/devices/audio/implement-policy
Configuring Audio Policies. ... Android 7.0 preserves support for using audio_policy.conf; ... Android 6.0 introduced a public Enumeration and Selection API that sits on top of the audio patch/audio port infrastructure and allows app developers to indicate a preference for a specific device output or input for connected audio records or tracks.
https://groups.google.com/d/topic/android-porting/uC49CH-zOSE
Aug 02, 2011 · Audio being one of the most important one, since telephony also depends on it. Without anything done on that front, we're facing the "using stubbed audio hardware, no sound will be produced" warning message when Dalvik starts. From what I've read, Android relies on an hardware glue library
https://grokbase.com/t/gg/android-porting/13b2sgyqym/audio-codec-offload-support-in-kitkat
(4 replies) Hi, Is there an example of sample code and audio_policy.xml for supporting Audio Codec Offload support in Kitkat. Also can the newly added API's for audio_stream_out like pause, resume drain and flush be used by other HALS like primary or deep buffer.
https://www.hsc.com/Portals/0/Uploads/Articles/Android-Porting-on-Embedded-Platform_v2_0633850602027036930.pdf
Stage 2: Porting Android Following are the main steps for porting Android: o Download the patches for Android o Update RIL (Radio Interface Library) for target platform o Update Board specific components such as Codec, Camera, Audio, Wifi, Power Management, Bluetooth etc. o Compile Android source code o Burn system image on Target platform
https://www.youtube.com/watch?v=PgNl051jm2Y
Jul 28, 2016 · This video tutorial is on how to enable Audio through the micro USB in android devices. This video tutorial is on how to enable Audio through the micro USB in android devices.
https://source.android.com/devices/audio/tv
The TV Input Framework (TIF) manager works with the audio routing API to support flexible audio path changes. When a System on Chip (SoC) implements the TV hardware abstraction layer (HAL), each TV input (HDMI IN, Tuner, etc.) provides TvInputHardwareInfo that specifies AudioPort information for audio type and address.. Physical audio input/output devices have a corresponding AudioPort.
https://www.android-x86.org/
This is a project to port Android open source project to x86 platform, formerly known as "patch hosting for android x86 support".The original plan is to host different patches for android x86 support from open source community. A few months after we created the project, we found out that we could do much more than just hosting patches.
https://source.android.com/devices/
Android's audio HAL connects the higher-level, ... All versions of Android support traditional storage with support for adoptable storage arriving in Android 6.0. ... Porting on Google Groups Get help. Android Help Center Pixel Help Center www.android.com Google Mobile Services ...
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