>Could anyone point to me a reference for the following (or explain to me
>directly what is the purpose of each of those functions) in the PCM module:
>
>       prepare:        snd_xxxx_capture_prepare,
>       trigger:        snd_xxxx_trigger,
>       pointer:        snd_xxxx_pointer,
>       copy:           snd_xxxx_capture_copy,
>       silence:        snd_xxxx_capture_silence,

search for "prepare" and "trigger" in the archives, and you should find
takashi's basic explanation of what the functions do. then come back
and ask more specific questions. 

>Plus, what is the fifo size (e.g. on the card)?

i'm not sure its relevant for cards with DMA. can't tell you more.

--p

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