Player: PS Vita: Crash when SE channels are exhausted

[Ghabry]

This happens because SE_Play does not check if there are any free channels.

Could be e.g. fixed by initializing a Semaphore to se channel count (7?) and then aquiring the Semaphore at the beginning of SE thread-for-loop and releasing it at the end of the for-loop.

The main thread could check this semaphore and when it is 0 (= would block) issue a Output::Warning and ignore that SE (like the SDL audio version does).

[Rinnegatamante]

A game where this could be easily reproduced for testing?

[carstene1ns]

1. Use Ib ver. 107 (english)
2. Use this savegame https://upload.af/yjgc88juhaml
3. Go into the separation room and inspect the painting.
4. ???
5. PROFIT

[Ghabry]

se-crash.zip

Here is an artificial test.

[Ghabry]

I only accept patches that show 493 "No free channels available" warnings in the 500 SE testcase ;)