>> It was a very much NASTY SURPRISE to find out that >> HAL DOES NOT mount multiple filesystems on removeable >> media. > > Is "fstyp" able to correctly detect a CD+ (1. Session > Audio, 2. session data)? > > Will HAL mount the data part _and_ play the music at > the same time? > > This would be the expected behavior.
That typically wouldn't work well regardless of whether HAL supported it, because raw CD audio playback is often done in such a way that the analog output also works, which means at 1x. That in turn means that any other concurrent access to the CD interferes with the audio. I've done that sort of thing before; both audio and data performance are horrible. A smarter player would offer the option of analog, digital+analog, or digital only playback; in the latter case, it could read in a manner that allowed >1x, so on a faster than 1x drive, it should be possible to have concurrent audio/data access that way. Better if the player buffered a lot, maybe 8MiB or so, on each read, did async I/O to the audio and drive, and scheduled another read a few seconds before the audio buffer was due to be empty; the rest of the time, it would just be updating its offset feedback, or would be available for the GUI event loop to use. An audiofs filesystem for audio CD sessions could hide all that, giving digital-only access to a pseudo directory of files; probably just with track numbers and a suffix indicating them as raw CD audio files. Getting fancy, it could give another version of each file, encapsulated in something common like .WAV format. By being data-only, and handling buffering and read-ahead, it would ensure performance. By providing an easy interface, it would ease portability (esp. if it resembled such audio filesystems on other platforms). This message posted from opensolaris.org _______________________________________________ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
