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mirror of https://github.com/cookiengineer/audacity synced 2025-05-01 16:19:43 +02:00
Paul Licameli 875e8e0984
Cross project copy data loss (#604)
* Need only CloseLock now, not old Lock and Unlock...

... which were for cross-project cut and paste, but they no longer work and we
need another solution.  So delete much old code.

* Fix dangling reference to AudacityProject completely! ...

... in SqliteSampleBlockFactory: retain ONLY the shared pointer to
ProjectFileIO, then pass that, not project, to constructors of blocks.

completing the work of 127696879dcc5ca687ec50a4ccef7acbed563926

* Restore part of the Bug2436 fix...

... which needs the non-default arguments to WaveTrack::EmptyCopy that got lost
at d39590cf41e1e1eac02fc52d88a1ad018824f77b

So that pasted WaveTracks refer to the correct SampleBlockFactory and database
for their project

But this is not yet a sufficient re-fix for the bug

* Complete the fix for cross-project copies and 2436...

... by duplicating sample blocks, in Sequence.cpp, when it is wrong just to
share them.

And to determine which case it is, see whether source and destination Sequences
have the same sample block factories when doing Copy or Paste.  Duplicate
when the factories are different.  Otherwise sharing is safe and more space
efficient.

This does the analogous to what DirManager::CopyBlockFile did before commit
d39590c.
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Audacity

Audacity is an easy-to-use, multi-track audio editor and recorder for Windows, Mac OS X, GNU/Linux and other operating systems. Developed by a group of volunteers as open source.

  • Recording from any real, or virtual audio device that is available to the host system.
  • Export / Import a wide range of audio formats, extendible with FFmpeg.
  • High quality using 32-bit float audio processing.
  • Plug-ins Support for multiple audio plug-in formats, including VST, LV2, AU.
  • Macros for chaining commands and batch processing.
  • Scripting in Python, Perl, or any language that supports named pipes.
  • Nyquist Very powerful built-in scripting language that may also be used to create plug-ins.
  • Editing multi-track editing with sample accuracy and arbitrary sample rates.
  • Accessibility for VI users.
  • Analysis and visualization tools to analyze audio, or other signal data.

Getting Started

For end users, the latest Windows and macOS release version of Audacity is available from the Audacity website. Help with using Audacity is available from the Audacity Forum. Information for developers is available from the Audacity Wiki.

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