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This also fixes the display of the startup LCD message, which had
been delayed until after the sysex transfer was finished.
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CID 1361762, 1361763, 1361764, 1361765.
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The VMD decoder sends audio directly to the system mixer.
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Several functions in Audio32 would call into the mixer to pause
or resume the audio handle, which would cause a deadlock if the
mixer's mixCallback timer fired while one of these functions was
running on the main thread.
To address this, calls to mixer to pause/unpause the digital audio
handle have been removed. Since this was just an optimisation to
prevent unnecessary calls to fill the audio buffer, the only
problem now is that a tiny amount of CPU is wasted on unnecessary
callbacks to read from the empty SCI mixer.
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This fixes digital samples in at least QfG1, SQ3, LSL5. Bug #7159.
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Using the one from SCI2.1mid makes fades very slow because SDL has
a larger audio buffer than SSCI DOS. This new algorithm is based on
wall time so will always fade at the correct speed, although the
larger buffers will have a coarser granularity so the fades may
not be as smooth as in the original engine. If anyone cares, the
fade volume could be mixed into individual samples in `readBuffer`
instead of applying just once per complete buffer. SSCI did not
do this, however, so this implementation should be pretty accurate.
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This normally happens in SSCI when the audio hardware is
initialised.
CID 1357048
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It's not possible to call any ResourceManager methods from any
thread other than the main thread because it is not thread-safe.
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Fixes audio not playing in later SCI32 games that use Audio32
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This reverts commit 5eaea05a2b6af0ddcf28fca1f0cd3fc0c54f4d07.
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Fixes audio issues caused by uninitialized variables
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MSVC does not allow the usage of the "override" keyword on function
definition, only on declaration
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This improves the perceived quality of audio in games that use
8-bit samples for music, like Torin.
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Replaces unused kernel calls to use kEmpty, and set correct
signatures for SCI32 kernel calls.
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This provides a complete implementation of kDoAudio through
SCI2.1mid, plus partial implementation of SCI3 features.
Digital audio calls shunted through kDoSound have also been
updated to go through the SCI32 audio mixer, though these shunts
are a bit hacky because the ScummVM implementation of kDoSound
does not currently match how SSCI kDoSound is designed.
It is probably possible in the future to just replace the SCI1.1
audio code (audio.cpp) with the new SCI32 code, since the major
differences seem to be that (1) SCI1.1 only supported one digital
audio playback channel (this is configurable already), (2) it
had extra commands for CD audio playback and queued sample
playback.
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SCI32 has its own audio handling code, but audio sync code is the
same as SCI16.
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Engines should only have to call one set of functions and not decide between the two. In fact, the 'emulation' API was documented to just call the 'real CD' API.
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The demo versions of these games were using a very different engine -
SCI1.1 vs SCI2/SCI2.1. Thus, we split them into different game IDs,
to avoid mixing specific game checks for them, as well as specific
game workarounds, which are different for the demos than the full
versions. Also, the demos should be working when SCI32 is disabled.
For these games, we don't use ADGF_DEMO, to avoid game IDs like
foodemo-demo
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- Detection works via signatures (couldn't find a better way)
- new kString subcalls were introduced SCI2.1 LATE
- kString now has signatures and is split via subcall table
- kString fix, so that KQ7 doesn't crash, when starting a chapter
- Sci2StringFunctionType removed, because no longer needed
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All callers requiring SeekableAudioStream have been adapted by using dynamic_cast
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Regression from 5028487038fd, where I assumed all songs were MIDI.
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