mumble-voip/mumble

Text-to-Speech should output to Mumble's selected output device when possible

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#2,667 opened on Nov 27, 2016

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accessibilityclientfeature-requesthelp wanted

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Description

@r-pufky was confused in issue #1573 about why Mumble outputs TTS to the default Windows device instead of the output device set in Mumble.

We should probably look into solving this.

From what I found when investigating this, there's a helper API in SAPI 5.3 that allows you to write TTS data to a WAV file. There is also an interface you can implement to fully replace the "output device" for TTS -- so we could potentially make it play via Mumble's AudioOutput.

This problem isn't restricted to Windows. All of our TTS backends play to the OS default device.

Contributor guide

Research direction
Explore the SAPI 5.3 helper API for writing TTS to a WAV file and implement an interface to redirect TTS output to Mumble's AudioOutput system.
Tech stack
cpp
Domain
audio video rtc
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
C++Audio Programming
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50