libsydney and portaudio are wrappers like Phonon. In the same category there are also libao, SDL-audio and others.
What I miss most with PulseAudio is AC3/DTS/AAC passthrough. I hope that will be implemented soon. It's not too uncommon to have the computer connected to a receiver via SPDIF nowadays, and having it go through the AC3 -> decode -> PA -> ALSA AC3-encoder -> receiver is a lot worse CPU wise than just AC3 -> receiver when the system is already struggling with being able to decode the 1080p video stream in realtime.
Posted Sep 19, 2008 9:50 UTC (Fri) by Frej (subscriber, #4165)
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Same issue here :)
That's why we have Phonon in Qt/KDE
Posted Sep 21, 2008 23:23 UTC (Sun) by mezcalero (subscriber, #45103)
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phonon is a very different wrapper than libsydney and portaudio. The latter two wrap PCM output, the former a media decoder with a couple of other things.