Yay, I've achieved a significant goal in my GSoC project to rewrite MTP (Android) support in Amarok from scratch. Yes, it is the ability to fully manage tracks on your MTP devices.
|Amarok copying tracks to Android device|
What I've done last weeks:
- Added fancy progress bars when downloading/uploading/updating tracks on the MTP device. The progress bars are "cumulative", which means that there is only one progress bar for a given type of operation and device. Potential new jobs are added to it when it is already running.
- Reworked locking in order not to hold 2 locks simultaneously. There are N + 2 locks in each MTP collection (where N is the number of tracks) and holding any 2 of them simultaneously creates a potential deadlock situation (unless lock order is preserved) and may stall the UI for significant time. I managed to sneak in a fancy static (compile-time) assertion because I had to provide a copy constructor for a libmtp library object.
- Implemented removal of tracks on MTP device. This was rather easy, also comes with a progress feedback, but it is too fast to be screeshot-able. :)
- And finally implemented copying/moving tracks to the MTP device. This means that Amarok is now able to fully manage audio content of your Android phones and other MTP devices! It took a bit of effort, but it works nicely now. I've even tested crazy things like plugging the device out in the middle of a move operation to check the behaviour is correct (it is and Amarok doesn't crash nor eat your kittens (YMMV)).
- Allowing to specify a folder structure and show human-readable folders for existing tracks.
- A config dialog for each device.
- Transcoding (low-level part is virtually done, only needs UI).