Hi All
Could any one tell me how does the data flow like for arecord with alsa plugin?
I found the description on alsa document, with a plugin definition in asound.conf
pcm.myplugdev {
type plug
slave {
pcm default
rate 48000
}
}
the data flow for aplay £ºaplay -D myplugdev foobar.wav as follows
aplay--> myplugdev (plugin named "plug" converts rate) --> default --> hw:0,0
How about the data flow for arecord£ºaplay -D myplugdev -c 2 -r 48000 save.wav
should be like this? No matter what sample rate for input source , the save.wav should always be 48000?
arecord--> hw:0,0->default->myplugdev (plugin named "plug" converts rate) --> save.wav?
It is wired it does not work when I am using a dummy codec to capture I2S audio data to a file, the sample rate is always the same with the source, it seems the converts rate plugin does not work.
Who can kindly give me an explanation for it? I am new to alsa.
Thanks
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