This works around a conflict with <winioctl.h>.

It does not work on Windows, and is not thread-safe on Linux.

It is missing some features w.r.t. window management.

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Tested with Built-in Input, Built-in Microphone and Griffin iMic USB system
Usage: qtsound://"Built-In Input" or qtsound://"iMic USB audio system"
Modified-by: Jean-Baptiste Kempf <jb@videolan.org>
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

A regression was there in 0.2.1

Closed #4373
(The samples still doesn't work if ffmpeg-mt is enabled, but that's probably a
ffmpeg/libav bug)

Needed on platform with poor tools support (== OSX)
TODO:
    find required versions for each tool and check if the system has them
    build GNU tar with xz support if xz was missing

Close #4206.

This should correct error handling cases.

This is not used anymore.

This was meant for interleaving RTP.

In append mode, all write operations must occur at the end of the file.
Nevertheless the initial read offset is the beginning of the file.

mingw-w64 FORCEINLINE definition includes 'extern'

We have to count for "Bold", "Normal" and "Italic" ending in registry

Close #4949

Probing is buggy and slow (and it runs for every input item!).

 * fix memory leak of image attribute in case of error,
 * fix clobber of video format structure in case of error,
 * print unknown XVideo format error only once per adaptor
   (rather than once per VLC format per adaptor)