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The high-resolution videos play back at much lower volume than the
original ones. This adds hard-coded values for how much to amplify
each cutscene. It's all done by ear, and it does introduce some
clipping, but I think it should be acceptable.
Of course, it could also be a problem with the audio decoder, so
this may be the wrong approach entirely.
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In all my attempts to get the audio and video to sync up in the
ZGI videos, there have always been 9-10 frames of video before the
audio even starts, even though the audio is timestamped to start
before. This attempts to fix that by prioritizing sending audio
packets to the decoder in a timely fashion.
I do not know if this is the correct way of doing this, and there
are still some things that need to be fixed. But pragmatically, it
does procude significantly better sync, so...
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Sometimes (only at the very start of a movie?) there will be a
video packet that has a PTS but no frame to display. Save that PTS
and use it for the next frame. This doesn't actually improve
anything, as far as I can tell, but feels right.
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We weren't doing anything with it anyway. And I'm not sure it's
even available in the ZGI videos.
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I think it makes things easier to read, and I have some ideas
that I want to try which should be easier this way...
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This is another attempts at improving the audio/video sync in the
MPEG-PS decoder. Unfortunately, the audio probably also needs to
be synced to its pts timestamps...
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This code comes from clone2727's now defunct (?) ac3 branch, with
some minor compile fixes. This represents the latest version of
the stalled AC-3 decoder work for Zork: Grand Inquisitor. Note,
however, that I have not yet asked for clone2727's permission to
use this. I'm just experimenting.
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Like most things that make this branch actually work, this comes
from clone2727.
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This collects the whole frame before trying to decode it. It's
still now working right, but it's way better than it was before.
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At the moment, this produces nothing but misery in the form of
Valgrind warnings and horrible noise.
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For use with ZVision and later MADE
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