Review Request: udev PortableMediaPlayer: read protocols from media-player-info; docs

[Matěj Laitl]

> On Nov. 20, 2011, 3:37 a.m., Alex Fiestas wrote:
> > solid/solid/backends/udev/udevportablemediaplayer.cpp, line 109
> > <http://git.reviewboard.kde.org/r/103028/diff/1/?file=40295#file40295line109>
> >
> >     We have been returning "mtp" as the protocol that identify "mtp" devices, the value of the mpi files is "storage" while it should be mtp.
> 
> Matěj Laitl wrote:
>     MTP devices should have ID_MEDIA_PLAYER == 1 si this is catched on line 93. If there is a MTP device that has ID_MEDIA_PLAYER == <string> ans <string>.mpi says AccessProtocol=storage, it is a bug in media-player-info. (it says that "storage" is for USB Mass Storage devices)
> 
> Alex Fiestas wrote:
>     Oh now I got it! so:
>     
>     If MTP, libmtp set it to 1 and then you should use libmtp to get more info
>     If NOT mtp, m-p-i will set it to the file you should parse in order to get information.
>     
>     Is that correct ?

Absolutely.


- Matěj


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On Nov. 5, 2011, 4:47 p.m., Matěj Laitl wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> http://git.reviewboard.kde.org/r/103028/
> -----------------------------------------------------------
> 
> (Updated Nov. 5, 2011, 4:47 p.m.)
> 
> 
> Review request for kdelibs.
> 
> 
> Description
> -------
> 
> This is a second attempt at implementing PortableMediaPlayer for udev
> back-end using media-player-info [3], the first attempt was [2] by
> Alex Merry and this patch is heavily based on it. This patch relates to
> a discussion at [1] and is just a first step, the second would
> be to forward PMP interface from udev backed to udisks backed somehow
> (udisks...Device interface provides NativePath attribute that links to
> sysfs path that can help - on Linux)
> 
> [1] http://mail.kde.org/pipermail/kde-hardware-devel/2011-October/001481.html
> [2] https://svn.reviewboard.kde.org/r/5853/
> [3] http://www.freedesktop.org/wiki/Software/media-player-info
> 
> Care is taken not to change existing behaviour - e.g. when udev env
> ID_MEDIA_PLAYER equals 1, behaviour is unchanged.
> 
> TODO: announce runtime-only media-player-info dependency for solid and
>       add it to build instructions. libmtp >= 1.0.4 is also needed at
>       runtime for detection of MTP devices to work. usbmuxd (dependency
>       of libimobiledevice) is needed at runtime for detection of Apple
>       iOS devices.
> TODO: what about windows support?
> 
> The patch is against kdelibs KDE/4.7 branch, please forward-port.
> 
> CCBUG: 253671  # does not solve it yet, but is a first step
> CCBUG: 269447
> CCBUG: 269451
> REVIEW: 103028
> DIGEST: groundwork for better media device player detection
> CCMAIL: amarok-devel at kde.org
> 
> 
> Diffs
> -----
> 
>   solid/solid/CMakeLists.txt 1a4adfa 
>   solid/solid/backends/udev/udevdevice.cpp d6c7fb4 
>   solid/solid/backends/udev/udevmanager.cpp 55e655b 
>   solid/solid/backends/udev/udevportablemediaplayer.h e0348aa 
>   solid/solid/backends/udev/udevportablemediaplayer.cpp 32a1893 
>   solid/solid/ifaces/portablemediaplayer.h a73120a 
>   solid/solid/xdgbasedirs.cpp PRE-CREATION 
>   solid/solid/xdgbasedirs_p.h PRE-CREATION 
> 
> Diff: http://git.reviewboard.kde.org/r/103028/diff/diff
> 
> 
> Testing
> -------
> 
> 1. connect iPod
> 2. works:
> $ solid-hardware details /org/kde/solid/udev/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.0/host6/target6:0:0/6:0:0:0/block/sdc
> udi = '/org/kde/solid/udev/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.0/host6/target6:0:0/6:0:0:0/block/sdc'
>   parent = '/org/kde/solid/udev'  (string)
>   vendor = 'Apple'  (string)
>   product = 'iPod'  (string)
>   description = 'Portable Media Player'  (string)
>   Block.major = 8  (0x8)  (int)
>   Block.minor = 32  (0x20)  (int)
>   Block.device = '/dev/sdc'  (string)
>   PortableMediaPlayer.supportedProtocols = {'storage', 'ipod'}  (string list)
>   PortableMediaPlayer.supportedDrivers = {'usb'}  (string list)
> 
> 3. not yet:
> $ solid-hardware details /org/freedesktop/UDisks/devices/sdc1
> udi = '/org/freedesktop/UDisks/devices/sdc1'
>   parent = '/org/freedesktop/UDisks/devices/sdc'  (string)
>   vendor = 'Apple'  (string)
>   product = 'MATOUSUV IP'  (string)
>   description = 'MATOUSUV IP'  (string)
>   Block.major = 8  (0x8)  (int)
>   Block.minor = 33  (0x21)  (int)
>   Block.device = '/dev/sdc1'  (string)
>   StorageAccess.accessible = true  (bool)
>   StorageAccess.filePath = '/media/MATOUSUV IP'  (string)
>   StorageAccess.ignored = false  (bool)
>   StorageVolume.ignored = false  (bool)
>   StorageVolume.usage = 'FileSystem'  (0x2)  (enum)
>   StorageVolume.fsType = 'vfat'  (string)
>   StorageVolume.label = 'MATOUSUV IP'  (string)
>   StorageVolume.uuid = '3141-5926'  (string)
>   StorageVolume.size = 7888957440  (0x1d637f000)  (qulonglong)
> 
> 
> Thanks,
> 
> Matěj Laitl
> 
>

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