Thanks for your reply Lennart. > > > - Does this solution entail any configuration of /etc/asound.conf to > link > > surroundxx with the HDMI device number? And if this is the case, how > > compatible is this with hot-plug (depending on the order in which I plug > all > > the audio devices the number could be different). > > Nah. It's just a matter of defining more profiles. I have no HDMI and > I have no clue about the channel orders, except for the obvious case: > 2ch. That's why there is currently only one profile known > "hdmi-stereo". So what's missing is duplicating the current hdmi > profile for more channel mappings and that's about it. > Humm, the HDMI protocol uses a different order than the traditional ALSA order (for 6 channels the HDMI order is l,r,lfe,c, rl, rr and for 8 channels just add sl, sr). Also in the multichannel case there are two channels per subpacket, and you can only mark a complete subpacket as invalid, not the individual channels it conveys. Thus I think you can only transmit even number of channels, for odd channels you'd have to add a dummy channel. But my guess is that this reordering is taken care of in the hardware interface, and most transmitters should reshuffle the channels, good ones do :-). In other words, I think we should only worry about the ALSA order. Additional HDMI profiles would be similar to the surround40 surround51 and surround71 ones then, I am not even sure we'd need new profiles (unless the surroundxx tag identifies an alsa-lib device?) That's just my understanding of HDMI though. Std disclaimers apply. Regards - Pierre -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20090402/f6d7edc0/attachment.htm>
