mediascanner2

Mediascanner2 should provide a QML interface that satisfies the needs of music-app

Bug #1273625 reported by James Henstridge on 2014-01-28

This bug affects 2 people

	Status	Importance	Assigned to	Milestone
Ubuntu Music App	Fix Released	High	Unassigned	Ubuntu Music App hackdays-1403 "hackdays-1403"
mediascanner2	Fix Released	Undecided	Unassigned
mediascanner2 (Ubuntu)	Fix Released	Undecided	Unassigned

Bug Description

The current version of music-app uses QtGrilo to snarf the entire media index into a private database on startup. We haven't yet implemented a Grilo plugin for the new media scanner, and it would be preferable for music-app to drive itself directly from the media scanner index.

To achieve this, we want to provide a QML interface that provides the necessary functionality. The initial work is in this merge proposal, but it does little more than show that it is possible to perform queries from QML:

https://code.launchpad.net/~jamesh/mediascanner2/qml-plugin/+merge/201754

We most likely need to add some QAbstractListModel classes that let you iterate over songs, albums and artists. What is less clear is what filters would be needed to work with those models.

This e-mail is also relevant:
https://lists.launchpad.net/ubuntu-touch-coreapps/msg00666.html

See original description

Related branches

lp:~jamesh/mediascanner2/qml-plugin

Merged into lp:mediascanner2 at revision 212

Michal Hruby (community): Approve on 2014-02-27

PS Jenkins bot (community): Approve (continuous-integration) on 2014-02-27

Timo Jyrinki: Pending requested 2014-01-15

lp:~music-app-dev/music-app/use-mediascanner2.0

Merged into lp:music-app/trusty at revision 496

Ubuntu Phone Apps Jenkins Bot: Approve (continuous-integration) on 2014-06-19

David Planella: Needs Information on 2014-05-13

lp:~jamesh/mediascanner2/qmlplugin-updates

Merged into lp:mediascanner2 at revision 230

Jussi Pakkanen (community): Approve on 2014-05-08

PS Jenkins bot (community): Approve (continuous-integration) on 2014-05-08

David Planella (dpm) on 2014-01-28

Changed in music-app:
status:	New → Triaged
importance:	Undecided → High

David Planella (dpm) on 2014-01-28

description:

updated

Revision history for this message

Launchpad Janitor (janitor) wrote on 2014-01-30:

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in mediascanner2 (Ubuntu):
status:	New → Confirmed

Revision history for this message

Andrew Hayzen (ahayzen) wrote on 2014-02-10:

These are the use cases I can currently see within the latest version of the music-app
- getting all music
- getting all artists
- getting all songs from one artist
- getting all albums from one artist
- getting all albums
- getting all songs for a given album
- getting all genres
- getting all songs of a given genre
- getting all covers from one artist
- getting the cover of a given album
- getting all covers for a given genre

For each of the use cases, sorting will be required as well.

Revision history for this message

James Henstridge (jamesh) wrote on 2014-02-14:

We're currently not extracting genre information from music. We can certainly add that to the index though.

For cover art, we currently don't have any support in the media scanner: for the scope, the shell is retrieving the cover art via the image://album_art/artist=X&album=Y URIs (handled via the the thumnailing code in the Ubuntu SDK).

For the other cases, can you confirm that list models would be the desired API? Something like:

* song list model, with properties to restrict to an artist, album, or genre
* album list model, with property to restrict to an artist
* artist list model
* genre list model

If we provided those, could you build your interface and application logic directly on top of those classes rather than needing to maintain your own data model?

Revision history for this message

James Henstridge (jamesh) wrote on 2014-02-28:

songlist_test.qml Edit (1.7 KiB, text/plain)

I've put together a basic QML binding in the attached branch, which should be merged soon. It provides an Ubuntu.MediaScanner module you can import. Attached is a very simple QML example that uses the provided models to browse through the albums and songs in the index.

As said before, we don't have cover art support in the media scanner yet, but you can use the SDK's thumbnailing code for that. We also don't yet track genres, but this should be enough to get started (or to tell us it needs changing).

David Planella (dpm) on 2014-03-25

Changed in music-app:
milestone:	none → hackdays-1403

Revision history for this message

James Henstridge (jamesh) wrote on 2014-04-01:

As mentioned on IRC, album art support has been added via the image provider from the qtdeclarative5-ubuntu-thumbnailer0.1 plugin.

James Henstridge (jamesh) on 2014-04-02

Changed in mediascanner2:
status:	New → In Progress

James Henstridge (jamesh) on 2014-04-03

Changed in mediascanner2 (Ubuntu):
status:	Confirmed → In Progress

Revision history for this message

Ubuntu Phone Apps Jenkins Bot (ubuntu-phone-apps-jenkins-bot) wrote on 2014-06-19:

Fix committed into lp:music-app at revision 496, scheduled for release in music-app, milestone 1.0

Changed in music-app:
status:	Triaged → Fix Committed

Jussi Pakkanen (jpakkane) on 2014-08-27

Changed in mediascanner2:
status:	In Progress → Fix Released
Changed in mediascanner2 (Ubuntu):
status:	In Progress → Fix Released

David Planella (dpm) on 2014-10-07

Changed in music-app:
status:	Fix Committed → Fix Released

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