Hi! I've implemented multi PCM channel support for cs46xx based soundcards, the PCM multichannel should work on any soundcard with a cs4630 DSP. It should be possible to play 31 simultaneous PCM playbacks at 6 diferents sample rates. 1 slot is always reserved for capture, therefor 31. Each time the DSP needs to instanciate a SRC (Sample Rate Converter) task it costs memory and MIPS in the DSP therefor there only reserved place for 6 simultaneous SRC. PCM channels with the same sample rate shared the same SRC. The part of the driver that resource handles the PCM channel and SRC instances on DSP is complex, so there many drastic changes in cs46xx_lib.c, hopefully nothing that worked before is broken. NOTE: i've not tested 31 simultaneous playback yet, only 6 for the moment (in theory all 31 should work)
That's it, ending up here, the aditional feutures should be: - PCM multichannel. - Secondary CODEC, ALSA mixer, front && rear output (same output from rear && front). - SPDIF output. (i believe that i need some more help from Cirrus and maybe Hercules and other card manufacturers to get SPDIF input working) And this is like my "pre-proposal" to a patch for the ALSA project. For the moment i'm not planning to try implement any other feutures before getting this parts "stable enough", but we will see, things change quickly -:) Downloads: http://www.cucumelo.org/~gorm/alsa-driver-0.9.0rc2-bs20020731.diff.gz http://www.cucumelo.org/~gorm/alsa-driver-0.9.0rc2-bs20020731.tar.gz /Benny ------------------------------------------------------- This sf.net email is sponsored by: Dice - The leading online job board for high-tech professionals. Search and apply for tech jobs today! http://seeker.dice.com/seeker.epl?rel_code=31 _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
