core: Queue up Sound and SoundChannel methods during loading

[Aaron1011]

Flash supports calling Sound.play, SoundChannel.stop, and SoundChannel.soundTransform while a sound load is in progress (e.g. immediately after calling Sound.load).

To support this, we queue up information inside SoundObject and SoundChannelObject when a load is in progress. When a load completes, we trigger any queued Sound.play and SoundChannel.stop calls, and apply the most recent SoundChannel.soundTransform

[SN902]

Kingdom rush, dash_fly_by_futzi01-d9flryk.swf and most htpot NSWF stuff, now crashes with errors in this commit:

Cannot access property:: close of null or undefined
Cannot access property:: addeventListener of null or undefined
Cannot access property:: smoothing of null or not undefined

[Aaron1011]

@SN902 Is that a regression, or were those swfs previously crashing earlier?

[SN902]

@Aaron1011 on latest master works without issues, these swf's spam alot of these errors in console, but not permanently stops emulator

[Aaron1011]

@SN902 I've updated the PR to fix the issue - I left in a panic! by accident.

[SN902]

@Aaron1011 issue solved

[ousia]

@Aaron1011,

I wonder whether this PR may also be considered to fix #6673 (or it is a totally unrelated issue).

Many thanks for your help.

[Aaron1011]

@ousia I think that issue is unrelated - with this PR, loading is still all-or-nothing (we never report streaming/partial loads to AVM2), so it won't affect Sound.duration.

[ousia]

@Aaron1011, many thanks for your reply.

It would be great that Sound.position() and Sound.duration() are consistent with non-standard frame rates.

I hope this can be achieved in the future.

Many thanks for your contributions to Ruffle (and to all contributors for their work).