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dshow.cpp: Removed default preferred media types (I420) as it was reported by Paul Sokolovsky to cause kernel crashes
           with some buggy drivers. I added these media types a while back to get around another bug for drivers that
           didn't offer any preferred media types.
           Hopefully, the latter bug should be indirectly fixed when I added support for IAMStreamConfig.
           Moreover, I modified the selection of a default format in IAMStreamConfig to take
           GetFourCCPriority into a account.

Revert revision 13903. It is implemented in a different way by checking if the option --dshow-chroma is set. If it is set then the chroma is forced, otherwise it is not. This should solve the regression of previous commit, by letting users specify the chroma type to use. To get the previous default behaviour specify IV420 as preferred chroma type either on the commandline or in the Capture Device advanced tab.

Remove unconditionally enforcing of "preferred" media type upon the capture devices. Some devices don't handle this properly, which often results in a BSOD. By not setting a preferred media type the problem dissappears. Please check this with other type of devices for any regression.

 - Missing value lists
 - advanced / non-advanced problems
 - description problems
 - tyops

(da big courmischage)

- added support for IAMStreamConfig interface to configure user settings on capture pin media type

* Each module can declare a "human-readable short name" with set_name
* Modules are sorted by category (set_category, set_subcategory).
  Modules configs can be separated by set_section()
* Separated audio-filter and audio-visual
* Separated extraintf and control
* New command and widget : add_module_list() for comma-separated modules
* Vfilters now use "," as separator

* modules/access/dshow/dshow.cpp: fixed stupid bug in ReadCompressed() that was dropping part of the received data (Fixes the PVR issue).

* modules/access/dshow/dshow.cpp: don't add a prefered media type when dealing with pins which handle MEDIATYPE_Stream (for some reason the WinTV PVR doesn't really like this).

* modules/access/dshow/dshow.cpp: moved tuner properties to its own function + new dshow-tuner config option.

- invoked crossbar properties pages after graph has been created, changing video input should now work properly

  - switch to access_demux module for raw video/audio streams.
  - massive cleanup and simplifications.
  - a bunch of fixes.

* modules/access/dshow: simplification (video inversion is now handled in the rawvideo codec/packetizer).

* Add ACCESS_SET_PRIVATE_ID_STATE to the list of every access plugin
* msg_Err -> msg_Warn for unimplemented Control queries

- added last resort built-in mediatype for capture filter if card does not returns any (i.e Osprey cards)
- miscelaneous clean ups

- ordered device supported media types using an arbitrary fourcc preference priority before passing them to capture filter 
- removed assumption where YUY2 chroma was considered identical to UYVY

* include/modules_inner.h, include/modules.h: added a shortname field to the module declaration section.
* modules/access/*: added a shortname to a few modules.

  + Use ICaptureGraphBuilder2 when available (standard way to setup capture graphs).
  + Extra WDM property sheets for --dshow-config.
  + Some support for selecting crossbar routes.
* THANKS: Added Damien Fouilleul for the DirectShow input improvements.

* src/misc/configuration.c, include/configuration.h: added a change_action_add()method to associate an action (that can be triggered through a gui) to a config var.
* modules/gui/wxwindows/preferences_widgets.*: implemented partial support for change_action_add().
* modules/access/dshow/dshow.cpp: use change_action_add() to refresh the list of devices and to add an option to configure a device.

* modules/access/*: strings review + coding style fixes.

* modules/access/dshow/dshow.cpp: fixed previous fix.