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disc - fix loading of some peculiar audio discs. george carlin would probably have something funny to say about this

This commit is contained in:
zeromus 2014-12-21 04:53:08 +00:00
parent ff8922bb08
commit 8c41c1f8a8
1 changed files with 18 additions and 10 deletions
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28
BizHawk.Emulation.DiscSystem/CUE_format.cs
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@ -230,28 +230,35 @@ namespace BizHawk.Emulation.DiscSystem
//the aba that this cue blob starts on
int blob_disc_aba_start = Sectors.Count;
//for each track within the file, create an index 0 if it is missing.
//also check to make sure there is an index 1
//this is a bit dodgy.. lets fixup the indices so we have something for index 0
//TODO - I WISH WE DIDNT HAVE TO DO THIS. WE SHOULDNT PAY SO MUCH ATTENTION TO THE INTEGRITY OF THE INDEXES
Timestamp blob_ts = new Timestamp(0);
for (int t = 0; t < cue_file.Tracks.Count; t++)
{
var cue_track = cue_file.Tracks[t];
if (!cue_track.Indexes.ContainsKey(1))
throw new Cue.CueBrokenException("Track was missing an index 01");
if (!cue_track.Indexes.ContainsKey(0))
for (int i = 0; i <= 99; i++)
{
//index 0 will default to the same as index 1.
//i am not sure whether it is valid to have two indexes with the same timestamp.
//we will do this to simplify some processing, but we can purge it in a later pass if we need to.
var cti = new Cue.CueTrackIndex(0);
cue_track.Indexes[0] = cti;
cti.Timestamp = cue_track.Indexes[1].Timestamp;
if (cue_track.Indexes.ContainsKey(i))
{
blob_ts = cue_track.Indexes[i].Timestamp;
}
else if (i == 0)
{
var cti = new Cue.CueTrackIndex(0);
cue_track.Indexes[0] = cti;
cti.Timestamp = blob_ts;
}
}
}
//validate that the first index in the file is 00:00:00
//"The first index of a file must start at 00:00:00"
//zero 20-dec-2014 - NOTE - index 0 is OK. we've seen files that 'start' at non-zero but thats only with index 1 -- an index 0 was explicitly listed at time 0
if (cue_file.Tracks[0].Indexes[0].Timestamp.Sector != 0) throw new Cue.CueBrokenException("`The first index of a blob must start at 00:00:00.`");
//for each track within the file:
for (int t = 0; t < cue_file.Tracks.Count; t++)
{
@ -416,6 +423,7 @@ namespace BizHawk.Emulation.DiscSystem
//finally, analyze the length of the sessions and the entire disc by summing the lengths of the tracks
//this is a little more complex than it looks, because the length of a thing is not determined by summing it
//but rather by the difference in abas between start and end
//EDIT - or is the above nonsense? it should be the amount of data present, full stop.
Structure.LengthInSectors = 0;
foreach (var toc_session in Structure.Sessions)
{