Bug#1072429: libmediascan: FTBFS with ffmpeg 7.0: result.c:386:29: error: ‘AVCodecContext’ has no member named ‘channels’

[Sebastian Ramacher]

Source: libmediascan
Version: 0~20220401.git.34fc2d-5
Severity: important
Tags: trixie sid ftbfs
Usertags: ffmpeg-7.0

Hi,

during a rebuild of the reverse dependencies for the transition to
ffmpeg 7.0, your package failed to build


Relevant part (hopefully):
> /bin/bash ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I..   -Wdate-time -D_FORTIFY_SOURCE=2 -Wall -I../include -I/usr/local/BerkeleyDB.5.1/include -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -c -o libmediascan_la-result.lo `test -f 'result.c' || echo './'`result.c
> libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -Wdate-time -D_FORTIFY_SOURCE=2 -Wall -I../include -I/usr/local/BerkeleyDB.5.1/include -g -O2 -Werror=implicit-function-declaration "-ffile-prefix-map=/<<PKGBUILDDIR>>=." -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -c progress.c  -fPIC -DPIC -o .libs/libmediascan_la-progress.o
> libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -Wdate-time -D_FORTIFY_SOURCE=2 -Wall -I../include -I/usr/local/BerkeleyDB.5.1/include -g -O2 -Werror=implicit-function-declaration "-ffile-prefix-map=/<<PKGBUILDDIR>>=." -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -c result.c  -fPIC -DPIC -o .libs/libmediascan_la-result.o
> libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -Wdate-time -D_FORTIFY_SOURCE=2 -Wall -I../include -I/usr/local/BerkeleyDB.5.1/include -g -O2 -Werror=implicit-function-declaration "-ffile-prefix-map=/<<PKGBUILDDIR>>=." -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -c progress.c -o libmediascan_la-progress.o >/dev/null 2>&1
> result.c: In function ‘scan_video’:
> result.c:334:5: warning: assignment discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
>   334 |   c = avcodec_find_decoder(codecs->vc->codec_id);
>       |     ^
> result.c:369:8: warning: assignment discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
>   369 |     ac = avcodec_find_decoder(codecs->ac->codec_id);
>       |        ^
> result.c:386:29: error: ‘AVCodecContext’ has no member named ‘channels’
>   386 |     a->channels = codecs->ac->channels;
>       |                             ^~
> make[4]: *** [Makefile:808: libmediascan_la-result.lo] Error 1


The full build log is available from:
https://people.debian.org/~sramacher/ffmpeg-7.0/libmediascan_arm64.build

ffmpeg 7.0 is available in experimental.

Cheers

-- 
Sebastian Ramacher