pulseaudio is not built with AptX support

[Nobuto Murata]

The changelog mentions AptX, but it's not actually enabled in the build if I'm not mistaken. Aptx support seems to require gstreamer in the build dependency at least.

[changelog]
pulseaudio (1:15.0+dfsg1-1ubuntu1) impish; urgency=medium

  * New upstream version resynchronized on Debian
   - Support for bluetooth LDAC and AptX codecs and HFP profiles for
     improved audio quality

[upstream release notes]
https://www.freedesktop.org/wiki/Software/PulseAudio/Notes/15.0/#supportforldacandaptxbluetoothcodecsplussbcxqsbcwithhigher-qualityparameters

[meson.build]

bluez5_gst_dep = dependency('gstreamer-1.0', version : '>= 1.14', required : get_option('bluez5-gstreamer'))
bluez5_gstapp_dep = dependency('gstreamer-app-1.0', required : get_option('bluez5-gstreamer'))
have_bluez5_gstreamer = false
if bluez5_gst_dep.found() and bluez5_gstapp_dep.found()
  have_bluez5_gstreamer = true
  cdata.set('HAVE_GSTLDAC', 1)
  cdata.set('HAVE_GSTAPTX', 1)
endif

[build log]
https://launchpadlibrarian.net/551304449/buildlog_ubuntu-impish-amd64.pulseaudio_1%3A15.0+dfsg1-1ubuntu1_BUILDING.txt.gz

...
Dependency gstreamer-1.0 skipped: feature gstreamer disabled
Dependency gstreamer-app-1.0 skipped: feature gstreamer disabled
Dependency gstreamer-rtp-1.0 skipped: feature gstreamer disabled
Run-time dependency gstreamer-1.0 found: NO (tried pkgconfig and cmake)
Run-time dependency gstreamer-app-1.0 found: NO (tried pkgconfig and cmake)
...

    Enable D-Bus: true
      Enable BlueZ 5: true
        Enable native headsets: true
        Enable ofono headsets: true
        Enable GStreamer based codecs: false

[Nobuto Murata (nobuto)]

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=991597
> > Does that mean that enabling it, would only add some dependencies but
> > not actually do anything?
>
> Yes, a (soft) dependency should probably be added against
> gstreamer1.0-plugins-bad, but as I said, the needed version (>= 1.19) is
> not yet in debian

https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/commit/b916522382aaa33f216636a292e97cd769ac4093
> 1.19.1

[Daniel van Vugt (vanvugt)]

Oh, sorry I never tested any of the new codecs. Bug 1870829 has been reopened.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.