FEAT(client): Indicate talking users when locally muted

Before this commit it is impossible to tell whether a client is talking
or not once that client is locally muted.

This commit changes this by introducing a new talking state
"MutedTalking" for these special cases. In order for this talking state
to come in existence, the audio code was altered so that audio packets
are no longer dropped if the associated user is locally muted. Instead
the audio frame will pass the normal processing chain until it comes to
actually decoding it.

For Opus packets only the sample count is read out without actually
doing the work of decoding. For all other codecs the packet is decoded
as usual. In a final step the sample buffer is filled/overwritten with
zeros in order to mute the stream.

With this commit in place, the UI will indicate a user that is talking
but is muted with a special icon. Note that this is only the case in the
modern themes (Light and Dark) but not for the Classic theme as I wasn't
able to alter the talking icon accordingly. There is an altered version
of the icon added with this commit but that one doesn't render properly
within Qt (it does render everywhere else though). Making this feature
work for the classic theme is a simple matter of getting the icon to
work and then editing ClassicTheme.qrc which currently points to the
same icon as for passive users for the MutedTalking state.

4 files changed, 107 insertions, 0 deletions

diff --git a/themes/Classic/talking_muted.svg b/themes/Classic/talking_muted.svg
new file mode 100644
index 000000000..c8c0cc387
--- /dev/null
+++ b/themes/Classic/talking_muted.svg
@@ -0,0 +1,105 @@
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diff --git a/themes/ClassicTheme.qrc b/themes/ClassicTheme.qrc
index 0d201a2c1..324a5d0d4 100644
--- a/themes/ClassicTheme.qrc
+++ b/themes/ClassicTheme.qrc
@@ -44,6 +44,7 @@
     <file alias="talking_alt.svg">Classic/talking_alt.svg</file>
     <file alias="talking_off.svg">Classic/talking_off.svg</file>
     <file alias="talking_on.svg">Classic/talking_on.svg</file>
+    <file alias="talking_muted.svg">Classic/talking_off.svg</file>
     <file alias="talking_whisper.svg">Classic/talking_whisper.svg</file>
     <file alias="theme.ini">Classic/theme.ini</file>
     <file alias="actions/audio-input-microphone-muted.svg">Classic/tango/actions/audio-input-microphone-muted.svg</file>
diff --git a/themes/Mumble b/themes/Mumble
-Subproject 9467fe87e7d56a5e1506b8285b6a630e6b46298
+Subproject 0e9dd7fc95d28ca1b0c1d01c7bf13b02806afb5
diff --git a/themes/MumbleTheme.qrc b/themes/MumbleTheme.qrc
index c2d9755c9..780e560f1 100644
--- a/themes/MumbleTheme.qrc
+++ b/themes/MumbleTheme.qrc
@@ -50,6 +50,7 @@
     <file alias="talking_alt.svg">Mumble/talking_alt.svg</file>
     <file alias="talking_off.svg">Mumble/talking_off.svg</file>
     <file alias="talking_on.svg">Mumble/talking_on.svg</file>
+    <file alias="talking_muted.svg">Mumble/talking_muted.svg</file>
     <file alias="talking_whisper.svg">Mumble/talking_whisper.svg</file>
     <file alias="theme.ini">Mumble/theme.ini</file>
     <file alias="actions/audio-input-microphone-muted.svg">Mumble/actions/audio-input-microphone-muted.svg</file>