[FFmpeg-devel] [PATCH] Fix check for new enough CrystalHD library

[Gwenole Beauchesne]

Hi,

If an older libcrystalhd is installed, the current configure check will 
validate it but will fail to build FFmpeg since there were some API 
changes.

I see two ways to check this:
1) Check for the new libcrystalhd_version.h file
2) Check for the new DtsCrystalHDVersion() function

(2) is implemented in the attached patch. Along with an addition to make 
sure crystalhd support is disabled if check_lib fails.

Regards,
Gwenole.
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