Remove webrtc-audio-processing from the distro

[christopherco]

Summary

Removes the webrtc-audio-processing component from Azure Linux 4.0. The
library is AEC code that is significantly behind upstream and
carries downstream-only patches (e.g. webrtc-audio-processing-1.3-gcc15.patch)
just to keep building, with limited utility to AZL. Three consumers are fixed
in earlier commits so the removal does not break their builds.

Commits (bisectable)

The PR is structured so every commit is independently buildable:

1. fix(pipewire): drop webrtc-audio-processing BR
   Two spec-remove-tag overlays drop the BuildRequires from both the
   fedora >= 40 || rhel >= 10 branch (webrtc-audio-processing-1) and
   the legacy else branch (webrtc-audio-processing >= 0.2). pipewire's
   echo-cancel-webrtc meson option is auto upstream, so
   libpipewire-module-echo-cancel.so continues to ship with its
   speex / null backends; only the WebRTC backend compiles out.
   Bumps pipewire azl_release to 4.

2. fix(gstreamer1-plugins-bad-free): disable webrtc bcond
   Adds webrtc to build.without, which surfaces as
   %_without_webrtc 1 in the AZL macros sidecar and disables the
   gstreamer1-plugins-bad-free-webrtc subpackage and BR.

3. feat(pulseaudio): introduce azl_release for independent release bumps
   Mirrors the pattern already used for pipewire: introduces an
   azl_release macro that is added to the upstream Release number,
   so we can bump the Release tag for AZL-only changes without waiting
   for an upstream rebase to renumber. The regex matches upstream's
   current Release: 9... line verbatim so a future Fedora baseline
   bump (e.g. 9 → 10) forces a conscious re-evaluation rather than
   silently double-counting. Counter starts at 4 to retroactively
   account for three prior AZL commits that touched pulseaudio
   (deterministic-resolution feat, manual-release-calculation fix,
   gdm-hooks subpackage fix) plus this introduction. No spec-content
   change to package contents on this commit.

4. fix(pulseaudio): disable WebRTC AEC backend
   Overlay %undefine's with_webrtc. Important: the upstream spec
   uses both %if 0%{?with_webrtc} (which tests truthiness) and
   %{?with_webrtc:enabled}%{!?with_webrtc:disabled} (which tests
   definition) to compute the meson -D webrtc-aec= flag, so
   %global with_webrtc 0 would inconsistently still pass enabled
   to meson. %undefine makes all branches evaluate to the disabled
   side consistently. Bumps pulseaudio azl_release to 5.

5. chore(webrtc-audio-processing): drop component from distro
   Removes base/comps/components.toml entry,
   base/comps/components-publish-channels.toml entry,
   locks/webrtc-audio-processing.lock, and the entire
   specs/w/webrtc-audio-processing/ directory (638 lines deleted).

User-visible impact

• pipewire / pulseaudio: module-echo-cancel.so still ships with
  the speex and null AEC backends. Configurations using
  aec_method=webrtc will no longer load and should switch to
  aec_method=speex.
• gstreamer1-plugins-bad-free: the -webrtc subpackage is no
  longer produced (provides libgstwebrtc.so); affects only consumers
  that explicitly install that subpackage.

Testing

Each affected component was built and smoke-tested in mock:

• pipewire: built clean without webrtc-audio-processing BR;
  libpipewire-module-echo-cancel.so still packaged, has no missing
  library deps; pipewire --version runs in the chroot.
• gstreamer1-plugins-bad-free: built clean with _without_webrtc;
  -webrtc subpackage no longer produced; other subpackages unchanged.
• pulseaudio: built clean with %undefine with_webrtc;
  module-echo-cancel.so still packaged, libwebrtc-util.so no longer
  packaged, no missing library deps; pulseaudio --version runs in the
  chroot.
• All 5 commits independently verified self-consistent — fresh
  worktrees + azldev comp render -p <comp> + azldev comp update -p <comp>
  for each affected component produce no diff at every commit.

Overlay durability

For both pipewire and pulseaudio the overlays use anchored regexes that
match upstream verbatim, so a future Fedora rebase that changes the
macro spelling stops the overlay matching and forces a conscious
re-evaluation. Inline comments instruct future maintainers to update
the regex rather than delete the overlay — the constraint is permanent
(webrtc-audio-processing is not shipped in AZL).

Fixes: AB#19727

[Copilot]

Pull request overview

Removes webrtc-audio-processing from Azure Linux and updates affected multimedia components so they no longer require or build against that library.

Changes:

• Drops the webrtc-audio-processing component, lock, publish-channel entry, and rendered spec/source files.
• Disables WebRTC-related backends/features in PipeWire, PulseAudio, and GStreamer where needed.
• Updates rendered specs, generated macro sidecars, and component locks for the affected packages.

Reviewed changes

Copilot reviewed 16 out of 20 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
base/comps/components.toml	Removes the component from the distro component list.
base/comps/components-publish-channels.toml	Removes the component from publish channels.
base/comps/gstreamer1-plugins-bad-free/gstreamer1-plugins-bad-free.comp.toml	Adds webrtc to disabled build conditionals.
base/comps/pipewire/pipewire.comp.toml	Drops WebRTC BRs and disables PipeWire WebRTC echo-cancel backend.
base/comps/pulseaudio/pulseaudio.comp.toml	Adds AZL release macro handling and disables PulseAudio WebRTC AEC.
locks/gstreamer1-plugins-bad-free.lock	Refreshes component input fingerprint.
locks/pipewire.lock	Refreshes component input fingerprint.
locks/pulseaudio.lock	Refreshes component input fingerprint.
locks/webrtc-audio-processing.lock	Removes deleted component lock.
specs/g/gstreamer1-plugins-bad-free/gstreamer1-plugins-bad-free.azl.macros	Records _without_webrtc.
specs/g/gstreamer1-plugins-bad-free/gstreamer1-plugins-bad-free.spec	Reflects rendered release bump.
specs/p/pipewire/pipewire.azl.macros	Bumps AZL release macro.
specs/p/pipewire/pipewire.spec	Reflects WebRTC BR removal and meson disable flag.
specs/p/pulseaudio/pulseaudio.azl.macros	Adds generated AZL release macro.
specs/p/pulseaudio/pulseaudio.spec	Reflects release macro loading and WebRTC disablement.
specs/w/webrtc-audio-processing/65f002e.patch	Deletes rendered patch for removed component.
specs/w/webrtc-audio-processing/arches.patch	Deletes rendered patch for removed component.
specs/w/webrtc-audio-processing/sources	Deletes source hash for removed component.
specs/w/webrtc-audio-processing/webrtc-audio-processing-1.3-gcc15.patch	Deletes rendered patch for removed component.
specs/w/webrtc-audio-processing/webrtc-audio-processing.spec	Deletes rendered spec for removed component.