CachingReader: Fix assertion when loop is before track start (lp1946759) #4383
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uklotzde
suggested changes
Oct 12, 2021
When setting a loop in front of the actual track (i.e. so that the end
of the loop is before the first audio frame), a debug assertion is
always triggered:
DEBUG ASSERT: "hintFrameCount >= 0" in function void CachingReader::hintAndMaybeWake(const HintVector&) at /home/jan/Projects/mixxx/src/engine/cachingreader/cachingreader.cpp:535
Steps to reproduce:
1. Go to the beginning of the track
2. Use beatjump to go to 8 beats before the beginning of the track
3. Set a beatloop of 4 beats
4. Assertion is triggered
See https://bugs.launchpad.net/mixxx/+bug/1946759 for details.
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uklotzde
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Oct 12, 2021
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Thank you! LGTM |
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When setting a loop in front of the actual track (i.e. so that the end
of the loop is before the first audio frame), this debug assertion is
always triggered:
Steps to reproduce:
This fixes the issue by just ignoring the negative hint lengthswithout triggering an assertion.
This also re-adds the skipping of zero-length hints that was removed by7d96c38 (#3081) to avoid triggering the
assertion. However, I think skipping was correct in the zero length
case, just triggering the assertion was not.
See https://bugs.launchpad.net/mixxx/+bug/1946759 for details.
The commit that originally introduced this assertion is8589930 (#1223).