[Libav-user] Dropped constants causing bug in GEGL

[Marcel Korpel]

Hi,

Just to give this bug report [1] a swing, I want to point you to a
problem because the API got changed. Due to the removal of specific
error constants, I cannot compile GEGL anymore. Output of make of the
current GEGL commit (d5c1e4dd020da713e9b3ba6764e579f5f4ebb07f) reads:

ff-load.c: In function 'print_error':
ff-load.c:72:10: error: 'AVERROR_NUMEXPECTED' undeclared (first use in
this function)
ff-load.c:72:10: note: each undeclared identifier is reported only
once for each function it appears in
ff-load.c:82:10: error: 'AVERROR_NOFMT' undeclared (first use in this function)
ff-load.c: In function 'prepare':
ff-load.c:281:32: error: 'CODEC_TYPE_VIDEO' undeclared (first use in
this function)
make[3]: *** [ff_load_la-ff-load.lo] Error 1
make[3]: *** Waiting for unfinished jobs....
ppm-load.c: In function 'ppm_load_read_header':
ppm-load.c:60:12: warning: variable 'retval' set but not used
[-Wunused-but-set-variable]
ppm-load.c: In function 'ppm_load_read_image':
ppm-load.c:120:13: warning: variable 'retval' set but not used
[-Wunused-but-set-variable]
make[3]: Leaving directory
`/home/mk/aur/gegl-git/src/gegl-build/operations/external'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/home/mk/aur/gegl-git/src/gegl-build/operations'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/mk/aur/gegl-git/src/gegl-build'
make: *** [all] Error 2

As of April 21, several of these constants have been removed from
error.h [2]. Did I correctly report a bug in GEGL (because it relies
on constants being available that have been dropped from your API) or
should these constants still be available? Or shouldn't GEGL use these
constants at all? I'm asking that, because I wonder if there are any
other programs that rely on them.

Kind regards,
Marcel Korpel

[1] https://bugzilla.gnome.org/show_bug.cgi?id=652957
[2] http://git.videolan.org/?p=ffmpeg.git;a=history;f=libavutil/error.h;h=47d366ebbcb1a82cefeeac2a5ecd920917b00cd8;hb=HEAD