Hello. Having 'mp3' USE on gst-plugins-meta with description 'Add support for reading mp3 files' is misleading. One can still playback mp3 files through GStreamer even with gst-plugins-meta[-mp3]. 'mp3' USE just pulls a plugin that relies on libmad for mp3 decoding. Thus 'mp3' USE should be renamed to 'mad' to reflect the fact that it doesn't enable mp3 support for gstreamer, but only enables mp3 support via specific library. Please fix.
I agree with leio opinion on this instead: https://bugs.gentoo.org/show_bug.cgi?id=558444#c16 From my point of view this would be wontfix then
ah, didn't realize this was entered as a new bug meanwhile before writing my "essay" on the topic :D I actually saw mgorny poke sound@ just a couple days ago on IRC about killing IUSE=mad everywhere and unifying on mp3 feature USE flag, as it's in the vast majority of cases just used for "support mp3" feature, only two packages had both mad and mp3 IUSE.
One option could be something like mp3? ( || ( media-plugins/gst-plugins-mad media-plugins/gst-plugins-mpg123 ) ) so it would pull in mad if neither is installed yet, but not if gst-plugins-mpg123 is installed by user. I don't think we can comfortably add gst-plugins-libav to this list, as then it would always be satisfied due to other codecs anyway, and I don't think gstreamer avdec_mp3 is that good compared to the others, though not sure without further research. I guess we can wait a bit on the decision, as we don't even have -mpg123 in yet and maybe there will be other stuff to tweak in the meta soon too to do in one revbump.
The main reason why I opened this bug is that having gst-plugins-meta[-mp3] and gst-plugins-mpg123 installed simultaneously to get mp3 support is illogical IMHO. Having mp3? ( || ( media-plugins/gst-plugins-mad media-plugins/gst-plugins-mpg123 ) ) is absolutely fine with me if there are plans to drop global mad USE.
Created attachment 441236 [details] gst-plugins-meta-1.6.3.ebuild Meta ebuild that allows both mad and mpg123 wrt https://bugs.gentoo.org/show_bug.cgi?id=558444#c25
I have no problems with adding the || ( ) dep and allow both to provide mp3 support ;)
commit 759b7f3f8da78eba331cf6293f460ea7b2840efe Author: Mart Raudsepp <leio@gentoo.org> Date: Wed Feb 15 23:11:51 2017 +0200 media-plugins/gst-plugins-meta: bump to 1.10.3, allow gst-plugins-mpg123 as USE=mp3 provider Gentoo-bug: 588762
Finally! Thank you very much!
