ALSA driver--Asoc
https://blog.csdn.net/zyuanyun/article/details/59170418 https://blog.csdn.net/whshiyun/article/details/80889838 ALSA Asoc框架如下图： Asoc分为machine ...
原文：ALSA driver--HW Buffer
当app在调用snd pcm writei时，alsa core将app传来的数据搬到HW buffer 即DMA buffer 中，alsa driver从HW buffer中读取数据传输到硬件播放。 ALSA buffer是采用ring buffer来实现的。ring buffer有多个HW buffer组成。 HW buffer一般是在alsa driver的hw params函数中分配的一 ...
2016-12-20 20:21 0 1861 推荐指数：
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