On 02/18/11 07:41, pl bossart wrote: >> First of all I patched pulseaudio git with some updates to treat >> hdmi-passthrough as it does iec958-passthrough. That seems to work. I can >> use paplay to pass a dts-wav file through to the receiver and the receiver >> triggers into dts mode and plays it. A native dts file stripped from and >> mkv movie file on the other hand doesn't play. >> >> I made some minor changes to the Xbmc pulseaudio driver so that it does not >> ignore passthrough requests. Xbmc's pulseaudio driver assumes (without >> patching) that passthrough is not available for pulseaudio. Now I can >> select the pulseaudio passthrough device. Xbmc has code in it to manipulate >> dts streams. >> >> The problem is that I can start a movie, Xbmc will select the dts track and >> play, but the receiver doesn't go into dts mode, but instead just buzzes the >> speakers. > Did you actually add the PASSTHROUGH flag when you create the pa_stream? > When the receiver doesn't lock it's typically when the data was > modified by the volume control. > Another possibility is mismatch between frequencies. Make sure the > sink and the stream sampling frequencies match. Yeah, I added the passthrough flag. The code dealing with volume control has a conditonal around it to ignore requests when using passthrough. I'll look a bit more a sample frequencies. I did change the default pulse frequency to 48000 in daemon.conf, not sure if that was necessary or not. > Note that we are completely reworking this part, you may want to wait > 1-2 months before the feature becomes more stable. > -Pierre Yeah, I know. But I need it now! hehe, I've got quite a few blue-rays that have been put into mkv's and I just bought a very nice surround sound system. Actually I though working on it now would be beneficial both for pulse and xbmc. Xbmc should be able to rock out as soon as pulse is official. I might uncover something useful to pulse while hacking xbmc.
