3ds-VoiceChat

A voice chat plugin for Nintendo 3DS. It was built using CTRPF. It runs as a Luma3DS plugin: PTT (Push-to-Talk) sends mic audio over TCP, and received audio is played back via CSND.

Completion Status

Incomplete

[======>...] 70%

• Connection may be unstable on real hardware and Citra.
• For same-PC (e.g. two Citra instances), connection may remain at "Waiting..." depending on the environment.

Features

• PTT send: While holding R, mic input is sent over TCP
• Receive & play: Received PCM is played with libncsnd (CSND)
• Host / Connect: TCP client-server model. One instance hosts, the other connects.
• IP:Port: Set the address for hosting (bind) or connecting (server destination).

Requirements

• devkitPro (devkitARM)
• CTRPluginFramework (libctrpf)
• libctru (3DS C/C++ library included with devkitPro)
• libncsnd (CSND library by PabloMK7)

Build

1. Install devkitPro and set the DEVKITARM environment variable.

2. Install CTRPluginFramework (libctrpf).

3. Install libncsnd:

   git clone https://github.com/PabloMK7/libncsnd.git
   cd libncsnd
   make install

4. Build this repository:

   make

   This produces 3ds-VoiceChat.3gx.

Usage

1. Put the built 3ds-VoiceChat.3gx in the plugin folder on the 3DS SD card (e.g. luma/plugins/<title ID>/).
2. Set IP:Port (e.g. 127.0.0.1:4660 for same-PC, or your LAN IP for network).
3. One instance: select Host (binds and waits for connection).
4. Other instance: select Connect (connects to the host).
5. When connected, hold R and speak to send; the other side will hear it.

Troubleshooting

• CTRPF menu does not open after Init — Try disabling the connection before opening the menu, or open the menu before enabling Host/Connect.

• Same-PC connection (e.g. two Citra instances)

  • Host: Set IP:Port to 127.0.0.1:4660 (or 0.0.0.0:4660), then select Host.
  • Connect: Set IP:Port to 127.0.0.1:4660, then select Connect.
  • If 127.0.0.1 does not work, try your PC's LAN IP (e.g. 192.168.1.x from ipconfig).

Contributing

Issues and pull requests are welcome.

Thanks / Libraries

This project relies on the following libraries and templates. Thanks to the authors for developing and releasing them.

• libctru (devkitPro)Official library for 3DS system calls and services (socket, memory, mic, etc.).
• CTRPluginFramework (Nanquitas)Created by Nanquitas. Provides CTRPF.
• CTRPluginFramework - Blank Template (PabloMK7)Blank CTRPF plugin template. Used as the base for this project.
• libncsnd (PabloMK7)Library that provides an interface to the CSND service. Used here for audio playback when DSP is not available.
• Patches (soc hooks) — tekito_256 (tekito_256) Thanks for the implementation of Patches.cpp (socket service hooks for games that also use soc).

License

This project is licensed under the same license as CTRPluginFramework. For the libraries and templates listed above, see their respective repositories for license information.