An update:
I moved my code from music to just plain mixer with reserved channels.
The memory use and change in load time is noticeable but I can live
with it. I implemented all the specialized looping and gapless
features I need using the stop event and a clever use of queueing
(nothing actually loops with the play function, it just perpetually
queues). I put in the timing code and made sure that the timer offset
re-calibrated within 1 frame of the music either looping or changing
sections. You can throw it off noticeably, but only if you pause and
unpause like a madman for about 30 seconds. Then once the loop rolls
around, the stop event gets thrown and the offset counter resets and
all is well again.
This is good enough. Thanks for the advice.
-Zack
On May 25, 2009, at 10:29 AM, Evan Kroske wrote:
Zack Schilling wrote:
I suppose you're both right. Using just the mixer, I only lose two
abilities: Starting the music from specific points and precise
timing information.
I can emulate the timing feedback using pygame.time.get_ticks and
an offset when the song starts, but I'll need to work around not
being able to start playing the song at an arbitrary number of
milliseconds. I'm making a rhythm/combat/platformer, so the music
and gameplay are closely tied. The biggest problem with losing the
ability to start the music any place is that there is going to be
desynchronization if the player happens to repeatedly pause the game.
Each time the player pauses, a few milliseconds will slip by
between pausing/resuming the music and recalculating the tick
offset, regardless of what order I perform the two in. Eventually
the music will desynchronize from the game. Can anyone think of a
way to keep the music in sync through multiple pauses without
either: 1.) allowing the music to play while paused or 2.)
restarting the music on unpause. The music has to stop and resume
exactly where it left off or else just the act of pausing affects
gameplay. If the number of milliseconds that I think the song has
been playing don't match the actual number, then the gameplay falls
apart.
Thanks,
-Zack
On May 25, 2009, at 12:36 AM, René Dudfield wrote:
hi
As Brian says, maybe loading multiple oggs as Sound objects would
work
for you, if you don't need streaming.
if not, maybe this will be good for you (allthough it doesn't
currently support oggs):
http://code.google.com/p/pygalaxy/wiki/SWMixer
It uses pyaudio (a python wrapper for portaudio) and some code to
emulate the pygame.mixer interface (although not exactly).
Also not sure if Nathan is working on it anymore.
Maybe it'd be useful for you.
cu,
On Mon, May 25, 2009 at 9:39 AM, Zack Schilling
<zack.schill...@gmail.com> wrote:
I'm looking for something a little more complex than the pygame-
wrapped SDL
music mixer to use with my pygame project. I need something that's
cross-platform (Mac OS X, Windows, Linux), easy-to-use, and
supports the
following features:
2+ tracks simultaneously
Streaming ogg playback
Seamless looping
Gapless playback
Fade in/out
Precise timing info (like the way the SDL reports playback time in
milliseconds )
Any suggestions for what I could use? How does Frets on Fire
work? Whatever
they use seems ideal in terms of features.
Thanks,
-Zack
Personally, I would avoid this whole problem by axing the pause
function entirely. If the levels are only a couple minutes long, I
don't think a pause function will be missed. If the game is all
about fast-action combat and platforming, very few people will want
to throw off their rhythm by pausing the game.
--
|Evan Kroske
Welcome2Obscurity.Blogspot.com <http://welcome2obscurity.blogspot.com>
Glory is fleeting, but obscurity is forever. — some French guy |
