Dingoo A320 forum

yes, you're right, the sound is a little late regarding gameplay.
That's a little bug with threads, i really don't know actually how can i change that ... It's better than during my tests, because with last implementation, i lost some sounds.
I know where is the pb but i don't know to resolve it with dingoo, sorry ... My knowledge of UCOS II OS is not so good ...
Actually, sounds are just late ...
Well, we can say that's a little reason to have another update one day ^^

i know why it lags, just had the same problem with gnuboy while experimenting a bit. it's because your sound buffer is too big alekmaul. Try reducing it and the sound shouldn't lag anymore

alekmaul wrote:Yes, i also fixed pb in smsGGOO.

Great, did you upload the update?

Thanks guy.

joyrider wrote:i know why it lags, just had the same problem with gnuboy while experimenting a bit. it's because your sound buffer is too big alekmaul. Try reducing it and the sound shouldn't lag anymore

ok, i will try with a 512 bytes sound buffer. Thanks for the tip.
But it's a shame to not have a function to know how long can be such thing ... The Dingoo is really poor in sound management ...

hey alekmaul, 512 might be a bit low although i guess it depends on the system, how much where you using before that ? i know i experimented quite a bit with gnuboy and it seems the optimal settings i found for it was 4096 bytes for mono sound and 8192 for stereo (double the size) with a sample rate of 44100 using a single buffer. you should experiment a bit with the buffer settings. I also noticed that if you don't use 44100 as a samplerate it will be very slow (my guess is that they convert it). Which will affect fps, (you should experiment a bit).

If i used 10240 in gnuboy with mono sound the sound was lagging and falling behind actuall gameplay. Thats why i think your buffer size was too high (i'm also just using a single buffer though so not sure if it makes a diffrence)

ouch, very strange, i'm using actually 1024 bytes each time i send something with waveout_write.
But i'm at 22050.
I will try to change regarding your information.

hey alekmaul, i wasn't refering to the number of bytes you write using waveout_write but to the buffer total size (the one you init for the emulator)
if i read your code (here : sound-threading-t1197-10.html#p11049 correctly) your actually not using 1024 bytes but 16*MAXFRAGSIZE which in total would be 16384 and explain the sound lag !
try to define MAXFRAGSIZE as 256 (if it's mono sound) or 512 (if it's stereo your outputting). It should fix it (just test it out a bit)

Ok, so i understood exactly the problem, we're talking about the same thing ^^
i will try to write 256 bytes instead of 1024.

ah ok wasn't sure also note i'm using one single buffer of 4096 bytes, which i'm writing at once using waveout_write (not a bufferarray with 16 smaller buffers) i,'m not sure if it would change anything though hehe

Too bad i'm at work would love to work some more on gnuboy ^^

see ya later