原文:ALSA driver---DPCM

https: www.kernel.org doc html v . sound soc dpcm.html Description Dynamic PCM allows an ALSA PCM device to digitally route its PCM audio to various digital endpoints during the PCM stream runtime. e. ...

2020-03-22 15:57 0 785 推荐指数:

查看详情

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 ...

Sat Dec 24 05:03:00 CST 2016 0 2653
ALSA driver---register platform

参考: https://elixir.bootlin.com/linux/v4.9.218/source/sound/soc/soc-core.c#L3159 https://blog.csdn. ...

Sat Apr 04 23:56:00 CST 2020 0 628
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 ...

Wed Dec 21 04:21:00 CST 2016 0 1861
ALSA driver---DAPM flow

参考: https://elixir.bootlin.com/linux/v4.9.218/source/sound/soc/soc-dapm.c#L804 https://blog.csdn.n ...

Sun Apr 12 23:19:00 CST 2020 0 641
ALSA driver---register codec

参考: https://elixir.bootlin.com/linux/v4.9.218/source/sound/soc/soc-core.c#L3314 https://blog.csdn. ...

Mon Apr 06 22:33:00 CST 2020 0 783
ALSA driver---register CPU DAI

参考: https://elixir.bootlin.com/linux/v4.9.218/source/sound/soc/soc-core.c#L3034 https://blog.csdn. ...

Sun Apr 05 22:01:00 CST 2020 0 1098
ALSA driver--PCM实例创建框架

在介绍PCM 之前,我们先给出创建PCM实例的框架。 #include <sound/pcm.h> .... /* hardware definition */ sta ...

Tue Dec 20 04:20:00 CST 2016 0 1506
ALSA】关于alsa的总结

一. alsa展现的三层结构: (1)audio interface: audio interface就是声卡,它含有hardware buffer,注意,这个hardware buffer是在声卡里面,不是内存。 (2)computer ...

Fri Jun 03 22:24:00 CST 2016 0 5540
 
粤ICP备18138465号  © 2018-2025 CODEPRJ.COM