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Audio HAL | Android Open Source Project
https://source.android.com/devices/audio/implement
The Core HAL is the main API used by AudioFlinger to play audio and control the audio routing. Some of the key interfaces are as follows: IDeviceFactory.hal is the entry point into the API. IDevice.hal and IPrimaryDevice.hal contain methods such as setMasterVolume or openInputStream.
Core Audio Essentials - Apple Developer
https://developer.apple.com/library/archive/documentation/MusicAudio/Conceptual/CoreAudioOverview/CoreAudioEssentials/CoreAudioEssentials.html
The audio hardware abstraction layer (audio HAL), which provides a device-independent, driver-independent interface to hardware Core MIDI, which provides software abstractions for working with MIDI streams and devices Host Time Services, which provides access to the computer’s clock
How to configure a coreaudio HAL plugin - Stack Overflow
https://stackoverflow.com/questions/62667826/how-to-configure-a-coreaudio-hal-plugin
A while ago I developed a coreaudio HAL plugin in C++ that sends audio from a Mac OS to a Raspberry Pi. Now, I would like to make some parameters configurable (e.g., the IP address of the RPI). I would like to at least achieve one of the following: make the plugin load some configuration file (e.g., from /Library/Preferences) have a CLI tool to ...
Android’s audio Hardware Abstraction Layer (HAL) | by ...
https://medium.com/mobidroid/androids-audio-hardware-abstraction-layer-hal-1908a403a85b
HAL The HAL defines the standard interface that audio services call into and that you must implement for your audio hardware to function correctly. The audio HAL interfaces are …
Audio - Android Open Source Project
https://source.android.com/devices/audio/
Core Topics Audio Android's audio Hardware Abstraction Layer (HAL) connects the higher-level, audio-specific framework APIs in android.media to the underlying audio driver and hardware. This section includes implementation instructions and tips for improving performance.
Introduction into iOS Core Audio. Before starting playing ...
https://blog.devgenius.io/introduction-into-ios-core-audio-1ec9ea15c47c
The audio hardware abstraction layer ( audio HAL) which provides a device-independent, driver-independent interface to hardware. Core MIDI which provides software abstractions for working with MIDI (Musical Instrument Digital Interface) streams and devices. Host Time Services which provides access to the computer’s clock. Mid Level Service Layer:
Create audio drivers with DriverKit - WWDC21 - Videos ...
https://developers.apple.com/videos/play/wwdc2021/10190/
Hello. My name is Baek San Chang, and I work on Core Audio. Today I will discuss a new way to create audio drivers with DriverKit. But first let's review how audio drivers work today. Prior to macOS Big Sur, an audio server plug-in would need to communicate with a hardware device …
Android音频框架笔记 - 上篇 - 简书
https://www.jianshu.com/p/9481b1482367
AUDIO_SOURCE_MAX = AUDIO_SOURCE_CNT - 1, AUDIO_SOURCE_HOTWORD = 1999, / A low-priority, preemptible audio source for for background software hotword detection. Same tuning as AUDIO_SOURCE_VOICE_RECOGNITION. Used only internally to the framework. Not exposed at the audio HAL. */} audio_source_t; 声道：
BackgroundMusic/DEVELOPING.md at master - GitHub
https://github.com/kyleneideck/BackgroundMusic/blob/master/DEVELOPING.md
An AudioServerPlugIn is a Core Audio driver that runs in userspace and is "hosted" by the HAL, which is nice because the HAL handles a lot of things for us. Only running in userspace means our bugs shouldn't be able to cause a kernel panic (though we can definitely crash the audio system) and users don't have to restart after installation.
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