These are faster and more precise.
This did not change the Uint16 versions (as SDL3 dropped them, and honestly
no one should be using them in SDL2), nor the NEON converters (as this was
not changed in SDL3, so far).
Fixes#8786.
Since the top-level table is getting undefined, all the things in it will
be unreachable and eligible for garbage collection without explicitly
nulling them out.
(cherry picked from commit 5191b20541)
Now, if the AudioContext starts in a "suspended" state, because the browser
blocked it from playing by default, we we run the audio "thread" in a timer
and throw away the generated audio. Once the AudioContext is allowed to
resume, we clear this timer.
The end result is that the app will continue to drain its audio queue
instead of consuming more memory over time (and, if it relies on an audio
callback to make progress, continue to run!), with the effect that the
page is merely silent but otherwise functioning as intended.
Once the user interacts with the page and the browser permits the the
AudioContext to run for real, audio should still be in sync, instead of
just starting to play audio that might now be at least several seconds behind.
(cherry picked from commit fd75a4ca05)
- Fixed audio device detection and usage.
- Implemented audio capture support
- Refactored buffer handling to separate pointers to fill and drain buffers.
Based on patches by josch1710 and Lars Erdmann:
https://github.com/bitwiseworks/SDL2-os2/pull/7
- Make sure the hotplug thread has hit its main loop before letting
DetectDevices continue.
- Don't unref the context subscription operation until it completes
(or we are shutting down).
I'm not sure which change fixed the problem, but at least one of them
appears to have done so.
Reference Issue #7971.
This risks blocking the thread if disaster ensues, and we can wait in the
thread's main loop for subscription as well anywhere else.
Reference Issue #7971.
(cherry picked from commit 956b18f50c)
This used to create a context and mainloop for each device and the hotplug
thread, but this isn't correct use of PulseAudio's API. Now we have a
single context and a pa_threaded_mainloop, and all threads cooperate around
it.
This was originally from SDL3, in 35292d7dba.
Reference Issue #7883.
Reference Issue #7427.
In theory this is illegal, but legit wavefiles in the field do it, and
it's easy to bump it to 1 for general purposes.
Formats with more specific alignment requirements already check for them
separately.
Fixes#7714.
(cherry picked from commit 2e646c7141)
- Avoids precision loss caused by large floating point numbers.
- Adds unit test to test the signal-to-noise ratio and maximum error of resampler.
- Code cleanup
(cherry-picked from commit 20e17559e5)
We get audio artifacts if we don't work at the higher precision, but
this is painful on CPUs that have to use a software fallback for this,
so for now (that is, until we have a better solution), get better output
on amd64 chips, where the cost is less painful.
(cherry picked from commit 1e5e8e2fda)
`EM_ASM_` and `EM_ASM_INT_V` are calls that have been deprecated
for a long time.
Since the return value isn't used for the call to `EM_ASM_`, it
can be replaced with `EM_ASM`.
`EM_ASM_INT_V` is now (for the last few years) `EM_ASM_INT`.
(cherry picked from commit a8e89f2567)
