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Alsa -sink PowerPoint PPT Presentation


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Alsa -sink. Sink-master. AEC. Sink-input-AEC. Origin-sink. True sink-input. Sink-input-app. Data writing. app. notes. Aec 会把 app 请求到的数据 copy 在自己的 buffer 里一份,送到 sink-master 一份 AEC module 里创建的 sink-input, 实际上是 sink-master 的 sink-input, 真 正属于它的 sink-input 由 app 请求传递数据时候创建

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Alsa -sink

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Alsa sink

Alsa-sink

Sink-master

AEC

Sink-input-AEC

Origin-sink

True sink-input

Sink-input-app

Data writing

app


Notes

notes

  • Aec会把app请求到的数据copy在自己的buffer里一份,送到sink-master一份

  • AEC module里创建的sink-input,实际上是sink-master的sink-input,真正属于它的sink-input由app请求传递数据时候创建

  • i.e. sink-master是alsa-sink,现在aplay播放数据…alsa-sink请求数据sink-input请求数据sink-input’s pop() in aec module request data from sink-input for APP  get datasink master got datawrite copy data to local buffer in AEC


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