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YUV 000 is a green, not black. Thanks DrMcCoy for noticing and fixing
the issue.
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See https://github.com/FFmpeg/FFmpeg/commit/2968bedf129558024ea87a1aabc4aa2d3a5bcb6e
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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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Fixes inconsistent videos playing in Caldoria in the DVD version of JMP
Pegasus Prime.
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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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In the Spanish version of Riven, the last edit of the video ogk.mov
ends one frame after the end of the media causing the playback to fail
without this check.
Fixes Trac#10633.
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Fixes Trac#10590.
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Our decoder currently only supports the standard FLC format which
does not rely on the stored packet count (which is part of the FLI
format and limited to 255 packets per line).
Instead, the image width should be used as criterion when decoding
a frame which allows for more than 255 packets per line.
See also https://www.compuphase.com/flic.htm
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When decoding blocks, the YUV planes' pitches were computed using the
target video surface size instead of the block based size, resulting in
decoded plane data being overwritten for some video sizes.
Affected videos are LEOS-11102.bik and LEOS-11152.bik from Myst III.
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And fix an out of bounds acces when seeking to the end of a video.
Skipping samples is needed even when seeking through silent edits
because a silent stream is queued for those.
Fixes #10219.
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These fall throughs have to be deliberate, or they wouldn't have to
check if mode equals 2 in the mode == 2 cases.
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All users of BitStream were in fact using a specific, hardcoded variant,
so we can hardcode that variant, removing the need for virtual calls,
and enabling inlining.
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This format is used by the stereo audio VMDs in Lighthouse.
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A lot of the standard VideoDecoder methods were still treating the
transparency track as part of the video, so methods like getFrameCount
would return double the amount it should be. This refactoring properly
separates the transparency track into a separate field entirely.
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The 16-bit DPCM decompressors in SSCI and Urban Runner use a 16-bit
register to store sample data, without any special handling of
overflow. As such, out-of-range samples simply wrap around, rather
than getting clipped.
It is not totally clear if the wrapping behaviour was intentionally
exploited to handle extreme transients, but in any case, videos
like GK2 5280.VMD that generate samples outside the signed 16-bit
range cause a loud pop when using clipping, but play back correctly
when wrapping.
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This change was inadvertently added in commit
44dd029cb17160316b2015321a0a53f8854b6dd3 but is not actually used.
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This gives Indeo3 the same behavior as other codecs when
encapsulated in a container that provides bit depth information
(e.g. AVI).
Closes #888.
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It turns out that at least one video in Starship Titanic, for the
Lift Indicator, has only a single transparency frame in track 2.
The added code, therefore, when it doesn't find an index entry
for the desired frame number, works backwards until it finds a valid
frame (likely frame 0), and then scans forward. If it hits the end
of the video, then it simply uses whatever last frame it last decoded.
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