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Using ALSA audio drivers in Android - jichu4n.com
https://jichu4n.com/posts/using-alsa-audio-drivers-in-android/
First, of course, ALSA drivers for the chip must be enabled in the kernel; to check whether they are working, see if /dev/snd is properly populated. If not, check if the driver has been compiled into the kernel and not as a module. There are three libraries that act as intermediate layers between an ALSA sound device and the Android userland.
Audio | Android Open Source Project
https://source.android.com/devices/audio/
The audio driver interacts with your hardware and HAL implementation. You can use Advanced Linux Sound Architecture (ALSA), Open Sound System (OSS), or a custom driver (HAL is driver-agnostic).
audio - Port Alsa to Android - Stack Overflow
https://stackoverflow.com/questions/11222963/port-alsa-to-android
You will notice all the sound devices - sound cards, including the SPDIF, HDMI and sound codes used by your android device. All these devices are controlled by alsa. If you unplug your usb device you will notice that the listing in the asound directory changes.
android - About ALSA driver: How to handle Audio …
https://stackoverflow.com/questions/17194777/about-alsa-driver-how-to-handle-audio-devices-correctly
1 Recently ,I am trying to develop a alsa driver for Linux (actually ,Android TV).I came across a problem about alsa (alsa refers to Advanced Linux Sound Architecture) devices handling Actually ,I have studied part of source code of alsa-lib-1.0.27.1, and tinyalsa (for android devices). And I studied audio driver of Samsung Devices.
[Q] How does Android handle audio and ALSA? | XDA Forums
https://forum.xda-developers.com/t/q-how-does-android-handle-audio-and-alsa.1425421/
alsa android aosp audio galaxy s2 Forums. General Development. Android Development and Hacking. Android Q&A, Help & Troubleshooting ...
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