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#88 Waveform display triggers crash while working with big files
Exception is thrown if a large size audio file is used.
It happened with atleast following operations
- Import file
- move keyboard focus to file
- try to split this file.
Steps for one of these cases:
1. open a project.
2. create a section.
3. while keyboard focus is on this section in contents view import this large file.
Result: exception is thrown.
debugger takes to line 179
of class waveform
which says
if (mBitmap != null) pe.Graphics.DrawImage(mBitmap, new Point(0, 0));
size of file used for test
Failed file: 1 hr, 2 min in time and 329 MB in size.
File which passed test: 32 min in time and about 157 MB in size.
Not yet able to check exact threshold size above which crash is triggered but rough sizes are listed above.
Logged In: YES
user_id=1313300
Originator: NO
I gave up trying to open a 1-hour file; possibly my virtual machine is the main problem here. A generic solution for working with large files could be to chunk large files into smaller blocks, e.g. anything longer than 5 minutes (selectable by a preference; and while doing import) could be auto-split into 5 minutes chunks which would improve performance and navigation. Note that it is not phrase detection, we just cut at the 5-minute mark regardless of audio content. We can even add a custom class to easily recognize blocks that have been chunked in this way.
Logged In: YES
user_id=1313300
Originator: NO
I gave up trying to open a 1-hour file; possibly my virtual machine is the main problem here. A generic solution for working with large files could be to chunk large files into smaller blocks, e.g. anything longer than 5 minutes (selectable by a preference; and while doing import) could be auto-split into 5 minutes chunks which would improve performance and navigation. Note that it is not phrase detection, we just cut at the 5-minute mark regardless of audio content. We can even add a custom class to easily recognize blocks that have been chunked in this way.