>Hello >I am thinking of writing a low level sound card driver for alsa. >The card in question is the dxr3 hardware DVD player, which has analogue and >SPDIF out. >It currently works fine with OSS drivers. >The card has no mixers, or recording function, just write and GETOPTR, >SETSPEED etc function in oss. > >Are there any documents for alsa 09 which would outline which functions I >have to implement, and what each function should do. >Hopefully, this will just be a matter of adding one more file to the >alsa-driver tree to support it. >I can find documentation on alsa-lib, but none on how to write a low level >driver for alsa-driver.
there is none. pick a simple card. look at the source code. look for snd_pcm_hardware_t and snd_pcm_ops_t. these define the "external API" for your low level driver. you will probably need to implement functions for: open, close, ioctl, hw_params, prepare, trigger, pointer, copy, silence and thats about it. check other vaguely similar cards for coding ideas. --p _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
