#362 Feature request to show/hide audio peaks for selected audio part

[Alessar]

Thanks, for great application!

Unfortunately during editing - program has unexpected behaviour.
Audio timeline can show audio peaks. And it does not shown in other some time.
For example if user put key frame to audio or video - related audio channel can clean all his audio peaks.
Maybe it is related with crossing audio/video parts.
Menu: View - Timeline -> Audio peaks (disable/enable) does not help.
Reopening application with project does not help too.
Maybe it is related when application try to parse big file and it is needed a lot of memory and time.
Sometime audio peaks appear again and if user change zoom koofficient - audio peaks desapear again.

Maybe it is needed a lot of memory or CPU for show every peaks on each audio part.
In that case I suggets to add menu item on audio part (in timeline) "to show/hide audio peaks"
So user can disable "menu: view -> timeline -> audio peaks" for all audio parts by default.
And after that user can specify one/two audio parts and show audio parts only for its.
In this case maybe application will be needed less memory or CPU.

[Eric Raijmakers]

Turned out to be completely unrelated to the complexity of the file/the edits that were made. Was simply a very bad design which caused, whenever an audio clip had volume/keyframe edits, a complete re-read of the peaks in the input file.

Now, the input file is read once, and once only.

[r2780]