Viewer sounds remain through speaker upon changing output device

[AtlasLinden]

Environment

Second Life Release 7.1.10.10622905308 (64bit)
Release Notes

You are at 134.6, 122.5, 23.1 in Pasta Cake located at simhost-084df238e5909f9ca.agni
SLURL: http://maps.secondlife.com/secondlife/Pasta%20Cake/135/123/23
(global coordinates 332,167.0, 305,531.0, 23.1)
Second Life Server 2024-07-22.10048683488
Release Notes

CPU: 12th Gen Intel(R) Core(TM) i9-12900HK (2918.4 MHz)
Memory: 32440 MB
OS Version: Microsoft Windows 11 64-bit (Build 22631.4037)
Graphics Card Vendor: NVIDIA Corporation
Graphics Card: NVIDIA GeForce RTX 3050 Ti Laptop GPU/PCIe/SSE2

Windows Graphics Driver Version: 32.0.15.5599
OpenGL Version: 4.6.0 NVIDIA 555.99

Window size: 2560x1369
Font Size Adjustment: 96pt
UI Scaling: 1
Draw distance: 128m
Bandwidth: 10000kbit/s
LOD factor: 1.75
Render quality: 5
Texture memory: 4095MB
Disk cache: Max size 1638.4 MB (100.0% used)

J2C Decoder Version: KDU v7.10.4
Audio Driver Version: OpenAL, version 1.1 ALSOFT 1.23.1 / OpenAL Community / OpenAL Soft: OpenAL Soft
Dullahan: 1.14.0.202408091639
CEF: 118.4.1+g3dd6078+chromium-118.0.5993.54
Chromium: 118.0.5993.54
LibVLC Version: 3.0.21
Voice Server Version: Vivox 4.10.0000.32327.5fc3fe7c.5942f08

Packets Lost: 0/3,587 (0.0%)
September 05 2024 07:11:14

Description

If the output sound device is changed to a headset while the viewer is open, voice will be heard via the headset and all other sounds are output to the previous device (in this case my built-in speakers).
This does not reproduce on pre-webRTC viewers

Reproduction steps

1. While logged in, change output sound device from speakers to headset via system Volume Mixer
2. Observe that sounds are still output to the speakers

[canny]

This issue has been linked to a Canny post: Voice does to adhere to input/output devices specified in preferences 🎉

[roxanneskelly]

Have a repro. This is not, in fact, a voice issue itself, as the issue also occurs for other sounds in the viewer. For webrtc, the webrtc library (at least as far as version 114,) does nothing on the OnDefaultDeviceChanged callback from windows core audio. audio_device_core_win.cc:3933 (windows)

Should probably do an OnDevicesUpdated callback into llwebrtc.cpp, at least as far as webrtc. Need to investigate what to do for other sounds.

The workaround is to simply restart the viewer after changing the system audio device.

[roxanneskelly]

On Mac, webrtc does the right thing and handles default device updates. Other SL sounds don't update their device when the default device changes. I was unable to repro the issue the user had reported on mac, and was able to get voice on headphones only, on both vivox on webrtc, and other sounds on speaker.

[roxanneskelly]

I wonder, perhaps, if the user's system is running an older version of OSX that may display this issue.

[maestrolinden]

I can think of 3 methods to change the input/output device in SL, on Mac:

A: Change device via the viewer 'Voice input/output devices' settings panel

1. Set the OS default audio devices in 'System Settings' to anything you like
2. Launch the viewer, begin chatting spatially
3. Open Preferences -> Sound -> 'Voice input/output devices'
4. Select a different input or output device
   • Expect the new device to be used by voice chat instantly

B: Change device via MacOS 'System Settings'

1. In the viewer, open Preferences -> Sound -> 'Voice input/output devices'
2. Set both input and output device to 'Default'
3. Begin chatting spatially in SL
4. Open MacOS 'System Settings' -> Sound
5. Change input and/or output device to something else
   • Expect the new device to be used by voice chat instantly

C: Change audio device by connecting/disconnecting OS-preferred audio device

1. Connect a USB headset
2. Open MacOS 'System Settings' -> Sound
3. Set the headset as the preferred input and output device
4. In the viewer, open Preferences -> Sound -> 'Voice input/output devices'
5. Set both input and output device to 'Default'
6. Begin chatting spatially in SL
   • Expect the USB headset to be used for SL voice
7. Physically disconnect the USB headset, causing the OS to revert to another audio device (such as built-in mic and speaker)

• Expect the built-in microphone and speaker to be used for SL voice

8. Physically reconnect the USB headset, causing the OS to favor it as the default device
   • Expect the built-in microphone and speaker to be used for SL voice

I've tested all 3 of these methods using the release viewer and the webRTC test viewer (envs shown below) and I'm unable to reproduce the issue. Like the 2 reporters, I'm also on macOS Sonoma (14.6.1). My headset hardware is different (probably much older than theirs), so that might be the difference.

Maestro Mac release viewer env

Second Life Release 7.1.9.10515727195 (64bit) Release Notes

You are at 130.6, 126.7, 23.0 in webRTC1 located at simhost-07c23d76c83837d55.aditi
SLURL: secondlife://Aditi/secondlife/webRTC1/131/127/23
(global coordinates 259971.0, 245375.0, 23.0)
WebRTC-Voice 2024-09-06.10744061602
Release Notes

CPU: Apple M1 Pro (2400 MHz)
Memory: 16384 MB
OS Version: macOS 14.6.1 Darwin 23.6.0 Darwin Kernel Version 23.6.0: Mon Jul 29 21:14:30 PDT 2024; root:xnu-10063.141.2~1/RELEASE_ARM64_T6000 x86_64
Graphics Card Vendor: Apple
Graphics Card: Apple M1 Pro

OpenGL Version: 4.1 Metal - 88.1

Window size: 1225x867
Font Size Adjustment: 96pt
UI Scaling: 0.75
Draw distance: 96m
Bandwidth: 10000kbit/s
LOD factor: 1.125
Render quality: 1
Texture memory: 10922MB
Disk cache: Max size 1638.4 MB (100.0% used)
HiDPI display mode:

J2C Decoder Version: KDU v7.10.4
Audio Driver Version: OpenAL, version 1.1 ALSOFT 1.23.1 / OpenAL Community / OpenAL Soft: OpenAL Soft
Dullahan: 1.14.0.202310131309
CEF: 118.4.1+g3dd6078+chromium-118.0.5993.54
Chromium: 118.0.5993.54
LibVLC Version: 3.0.16
Voice Server Version: Secondlife WebRTC Gateway

Packets Lost: 0/863 (0.0%)
September 17 2024 16:27:45

Maestro Mac webrtc test viewer Env

Second Life Test 7.1.11.10800977053 (64bit) Release Notes

CPU: Apple M1 Pro (2400 MHz)
Memory: 16384 MB
OS Version: macOS 14.6.1 Darwin 23.6.0 Darwin Kernel Version 23.6.0: Mon Jul 29 21:14:30 PDT 2024; root:xnu-10063.141.2~1/RELEASE_ARM64_T6000 x86_64
Graphics Card Vendor: Apple
Graphics Card: Apple M1 Pro

OpenGL Version: 4.1 Metal - 88.1

Window size: 1225x867
Font Size Adjustment: 96pt
UI Scaling: 0.75
Draw distance: 96m
Bandwidth: 10000kbit/s
LOD factor: 1.125
Render quality: 1
Texture memory: 10922MB
Disk cache: Max size 1638.4 MB (100.0% used)
HiDPI display mode:

J2C Decoder Version: KDU v7.10.4
Audio Driver Version: OpenAL, version 1.1 ALSOFT 1.23.1 / OpenAL Community / OpenAL Soft: OpenAL Soft
Dullahan: 1.14.0.202408091638
CEF: 118.4.1+g3dd6078+chromium-118.0.5993.54
Chromium: 118.0.5993.54
LibVLC Version: 3.0.21
Voice Server Version:

September 17 2024 15:16:53