[MPlayer-cygwin] [PATCH] ao directsound

[Diego Biurrun]

Sascha Sommer writes:
> 
> If there are no objections I will commit this tomorrow.
> Ao dsound is working a lot better for me than ao win32.

Nice to see this, CPU utilization is about the same for me, but I
still have a lot of problems, while ao_win32 plays perfectly:


I tried one DVD (Nirgendwo in Afrika), it works fine.


audio only MP3 file:
http://mplayerhq.hu/~diego/dsound/Elvis_Crespo_-_Suavemente.mp3

Fails to work under both Cygwin and MinGW, sound is garbled and cut
off, played much too fast, -autosync 100 does not help.  It gets worse
after seeking.


RM/RV30/cook file:
http://mplayerhq.hu/~diego/dsound/manonfires.rm

Plays jerky and has jumps under MinGW, -autosync 100 helps, but still
a few frames get dropped.  Under Cygwin it works a bit better but has
the same problems.


RM/RV40/cook file:
http://mplayerhq.hu/~diego/dsound/SirMixalot_-_Baby_Got_Back.rm

Plays well under Cygwin although a few frames get dropped, no
difference with -autosync 100.  MinGW is jerky and jumps, -autosync
100 helps, but still frames get dropped.


MOV/SVQ3/QDM2 file:
http://mplayerhq.hu/~diego/dsound/lotr3_trlr_dl.mov

Jerky and jumpy under MinGW, still drops frames with -autosync 100,
same but less pronounced with Cygwin.


AVI/Indeo3/MSGSM:
http://mplayerhq.hu/~diego/dsound/levis.avi

Jumps with MinGW, less so with -autosync 100, Jerky with Cygwin, but
here -autosync 100 makes it play fine.


MPG/MPEG1/MP3:
http://mplayerhq.hu/~diego/prodigy90_med.mpg

Jerky and jumpy without -autosync 100, better with that option under
Cygwin, under MinGW chaos ensues, it jumps like crazy, this goes away
with -autosync 100, but frames are still dropped. -vfm ffmpeg works
much better, although this is not necessary under Cygwin.


The system I test with is a P4 running XP with SP1 with a Radeon 9800
XXL and a C-Media AC97 onboard sound card.  It is the last Medion Aldi
PC.  I tried updating the sound drivers, it did not help.

All in all ao_dsound still seems to have some way to go...  This does
not mean it should not get committed.  Apparently it works well for
many people and it's good if it gets more widespread testing, but I
don't think it should be made the default just yet.

Diego