I was thinking specifically of AppleScript and SoundManager when I said "There are a couple other ways, but they're all really, really old and deprecated and often behave strangely".
On May 4, 2005, at 11:07 PM, Robert Brown wrote: > You could use Applescript to do it too. But PyObjC is really a > wonderful tool. > > > On 4-May-05, at 8:35 PM, Bob Ippolito wrote: > >> On May 4, 2005, at 9:51 PM, Erik Osheim wrote: >> >> >>> I've been developing a curses-based music player in python for the >>> last couple of years (http://www.bearhome.net/mpy3) and it is >>> getting >>> pretty good these days. I have added keybindings to control >>> volume in >>> linux using the ossaudiodev module found in python. >>> >>> I wanted to do the same thing under OS X which I am now trying to >>> fully support. After some digging, it looked to me like >>> Carbon.Snd was >>> the ticket. However, I can't find any documentation on this >>> module; I >>> did some digging in Apple provided docs, and was able to get a >>> semi-working, semi-broken version of volume control going (mutes one >>> ear, controls the volume of the other), but I am not sure this >>> will do >>> it. >>> >>> My questions are: >>> >>> 1. Does anyone have a good idea how to go about doing this best >>> on OS >>> X? I am not going to be able to support OS 9 (too many unix >>> dependencies) so if there is a cleaner way to do it than Carbon I >>> would be interested. >>> >> >> The best way to do it on OS X is to use CoreAudio, but none of that >> is wrapped in Python. You can, however, find an Objective-C >> framework that wraps what you need (MTCoreAudio should be able to do >> it, but there might be something easier) and just call into that with >> PyObjC. >> >> There are a couple other ways, but they're all really, really old and >> deprecated and they often behave pretty strangely. >> >> >>> 2. Is there anywhere to get better docs on things like ae*, >>> Carbon.*, >>> etc? It seems like python for mac is incredibly powerful but arcane, >>> and between no documentation and no doc strings I have a hard time >>> figuring out what I can do with it. >>> >> >> The first thing you should do is look for another way to do it, with >> PyObjC or some POSIX API (but probably PyObjC). There's a very >> straightforward translation between Objective-C and Python, so you >> use Apple's Cocoa docs when developing with PyObjC. >> >> If there is no way to do what you need with just PyObjC, you should >> consider just writing a little Objective-C wrapper that does what you >> need to do (calling into Carbon, CoreFoundation etc.), and call into >> that from PyObjC. Use the Apple documentation. Unfortunately this >> does require knowing C, but the ONLY documentation and the ONLY >> supported APIs are for C and Objective-C. Most of the time, in my >> experience, it's just quicker to write and debug the code (i.e. >> QuickTime related stuff) in Objective-C and call into it from PyObjC. >> >> If you still feel the need to try and do it with "pure Python", then >> read the Apple documentation for the relevant function(s) in C, and >> then guess at how it would be done from Python. Everything in >> Carbon.* is automatically generated, but there are a bunch of special >> cases and the rules are a bit strange. These modules would sooner go >> away than become documented. Don't be surprised if there's a bug in >> the wrapper or some function call sequence is impossible because the >> wrapper won't let you pass NULL somewhere, etc. Writing code using >> undocumented modules that may be broken is no fun. >> >> -bob >> >> _______________________________________________ >> Pythonmac-SIG maillist - Pythonmac-SIG@python.org >> http://mail.python.org/mailman/listinfo/pythonmac-sig >> > > --------------------------------------------------- > Robb Brown > Seaman Family MR Research Centre > Calgary, Alberta, Canada > > _______________________________________________ > Pythonmac-SIG maillist - Pythonmac-SIG@python.org > http://mail.python.org/mailman/listinfo/pythonmac-sig > _______________________________________________ Pythonmac-SIG maillist - Pythonmac-SIG@python.org http://mail.python.org/mailman/listinfo/pythonmac-sig
