Android Audio框架

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值得看的博文：

http://blog.csdn.net/uranus_wm/article/details/12851111

一、Android Audio框架图：

二、框架分析（注：引用的图）

三、通过终端查看设备节点信息

1.ll查看dev设备节点

# ll dev/snd/
crw-rw---- system audio 14, 12 2007-01-01 20:00 adsp
crw-rw---- system audio 14, 4 2007-01-01 20:00 audio
crw-rw---- system audio 14, 20 2007-01-01 20:00 audio1
crw-rw---- system audio 116, 0 2007-01-01 20:00 controlC0
crw-rw---- system audio 116, 32 2007-01-01 20:00 controlC1
crw-rw---- system audio 14, 3 2007-01-01 20:00 dsp
crw-rw---- system audio 14, 19 2007-01-01 20:00 dsp1
crw-rw---- system audio 14, 0 2007-01-01 20:00 mixer
crw-rw---- system audio 14, 16 2007-01-01 20:00 mixer1
crw-rw---- system audio 116, 24 2007-01-01 20:00 pcmC0D0c
crw-rw---- system audio 116, 16 2007-01-01 20:00 pcmC0D0p
crw-rw---- system audio 116, 25 2007-01-01 20:00 pcmC0D1c
crw-rw---- system audio 116, 17 2007-01-01 20:00 pcmC0D1p
crw-rw---- system audio 116, 56 2007-01-01 20:00 pcmC1D0c
crw-rw---- system audio 116, 33 2007-01-01 20:00 timer

2.cat查看声卡信息

# cat proc/asound/cards
0 [No00 ]: MStar ALSA DriveMStar MAD No.00 - MStar MAD No.00
MStar MPEG Audio Decoder No.00
1 [TCLRC71ST ]: USB-Audio - TCL_RC71ST
V140820_1 TCL_RC71ST at usb-mstar-1.4, full speed

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