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authorPaul Davis <paul@linuxaudiosystems.com>2006-05-24 20:40:11 +0000
committerPaul Davis <paul@linuxaudiosystems.com>2006-05-24 20:40:11 +0000
commit21704435b1619b299b790ef1a3138b180dd375c5 (patch)
treee7e5a433b3ba4841b4b0497cbf05de16d698d9e2 /DOCUMENTATION
parent87ed30d39c1f8cc00ddccb5f899527efa0ab36bf (diff)
provide interface to PBD::ThreadCreated() in BasicUI; remove/clean DOCUMENTATION files
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- ARDOUR README
-
- Paul Davis <paul@linuxaudiosystems.com> June 2003
-
-Welcome to Ardour. This program is still very much under development,
-but has now reached the stage where it will be productive and useful
-to have other people testing it out and perhaps (hopefully!) fixing
-bugs and adding features.
-
-**** SECURITY *******************************************************
-
-To run Ardour with the lowest latencies, it's necessary to use POSIX
-Real-Time Scheduling as well as locking all the memory it uses into
-physical RAM. These requirements can only be met if Ardour is run with
-root priviledges.
-
-On the other hand, things are not so bad. If you don't attempt to
-install it setuid root (which actually won't work anyway), then
-someone needs to have gained root access in order to run it like this.
-If they already have root access, Ardour is the least of your
-problems. So relax. We'll use capabilities once Linux kernels start
-arriving with them enabled, though this won't help too much with
-security, since the relevant capabilities would still allow a wiley
-cracker to do anything at all.
-
-Alternatively, you can choose to run Ardour without RT scheduling, and
-then there's no concern at all. It just won't be useful in low latency
-situations, which are desirable in most studio environments. Note that
-this is not so important if you have audio hardware that is capable of
-doing "hardware monitoring" - in this case, a lack of low latency will
-simply make response to Ardour's UI controls a little sluggish, but
-monitoring during capture will be excellent.
-
-**** HARDWARE COMPATIBILITY *****************************************
-
-Ardour uses JACK for all its audio I/O, thus providing seamless
-connections to both audio hardware and other applications. Its really
-not the right place to discuss JACK, but in case you are wondering:
-
-Although JACK uses the ALSA 0.9.0 API, it exercises this API in a way
-that no other application to date has done, and it also tries to use
-certain hardware features that again, no other existing applications
-use. As a result, although complete portability to all ALSA supported
-h/w is an eventual and very achievable goal, there may be issues
-surrounding h/w compatibility. Please remember that my primary goal
-with JACK is to build a professional audio system, and with Ardour, a
-professional digital audio workstation. If they happen to be useful
-for people with 2/4 channel cards, then great, but it's not my own
-primary focus.
-
-One other important issue is that your audio interface must support
-full duplex i/o with the same sample format for both capture and
-playback. This means, for example, that the SoundBlaster AWE cannot
-be used with JACK in full duplex mode - it only supports full duplex
-i/o if one of the two directions (capture or playback) is 8 bit and
-the other is 16. Very few cards have this kind of limitation, and if
-they do, they typically are not suitable for use with applications
-like JACK or Ardour for other reasons.
-
-To date, JACK has been run with:
-
- RME Hammerfall (Digi9652) (26 channels in, 26 channels out)
- RME Hammerfall DSP (hdsp) (26 channels in, 26 channels out)
- RME Hammerfall Light (Digi9636) (18 channels in, 18 channels out)
- Midiman Delta series (ice1712 chipset) (12 channels in, 10 channels out)
-
- Various consumer grade audio interfaces, typically with 2 channels
- in, 2/4 channels out, including:
-
- Hoontech 4Dwave-NX (Trident chipset)
- Ensoniq 5880
- Soundblaster 32
- Soundblaster 64
- Creative SBLive64
-
-and many more.
-
-So, basically, it appears to work for just about all ALSA supported
-cards, which is the goal.
-
-**********************************************************************
-
-BUG REPORTING
--------------
-
-Bugs should be reported to http://ardour.org/mantis/ . They are more
-likely to be remembered and dealt with there. Please check the existing bugs
-to make sure it has not already been reported and/or fixed in CVS.
-
-COMPILING ARDOUR
-----------------
-Please see the file "BUILD".
-
-RUNNING ARDOUR
---------------
-
-NOTE: You must have a running JACK server before starting Ardour.
- -----------------------------------------------------------
-
-Typing "ardour" will hopefully have some effect. "ardour --help" lists
-available options.