96 lines
3.5 KiB
Markdown
96 lines
3.5 KiB
Markdown
# osc-mqtt-bridge
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A bridge between [Open Sound Control](https://en.wikipedia.org/wiki/Open_Sound_Control) (OSC) and MQTT, allowind bidirectional communication. The main purpose of this tool is to provide a way to talk to devices that support OSC via MQTT messages for automation.
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## Example configuration
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```yaml
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relays:
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- mqtt_host: 10.0.0.2
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mqtt_port: 1883
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mqtt_client_id: osc_mqtt_bridge
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mqtt_user: mqtt
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mqtt_password: PASSWORD
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mqtt_topic: osc/behringer_wing
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osc_host: 10.0.0.3
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osc_port: 2223
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osc_bind_addr: 10.0.0.4 # Change to this machine's IP address. Expected to be a static IP.
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log_level: 2
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```
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## Configuration specification
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### Relay
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- `mqtt_host`: Hostname of the MQTT broker.
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- `mqtt_port`: Port of the MQTT broker.
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- `mqtt_client_id`: MQTT client ID of this relay.
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- `mqtt_user`: User name used for MQTT authentication.
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- `mqtt_password`: Password used for MQTT authentication.
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- `mqtt_topic`: Topic where MQTT messages are pushed and received.
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Set topic to `osc/example` and the following topics will be setup.
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- `osc/example/cmd/$OSC_CMD` - Any commands received on OSC will publish here.
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- `osc/example/send/$OSC_CMD` - Any commands pushed via MQTT will be forwarded to OSC.
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- `osc/example/bundle` - OSC Bundle messages.
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- `osc/example/bundle/send` - Send OSC Bundle messages.
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- `osc/example/status` - Configuration is published on startup.
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- `osc/example/status/check` - Request status.
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<br/><br/>
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- `mqtt_disable_config_send`: Disables the config send.
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- `osc_host`: Hostname for OSC client connection.
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- `osc_port`: Port for OSC client connection.
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- `osc_bind_addr`: Bind address of the OSC server.
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To have bidirectional mode, you must specify at least this, OscHost, and OscPort defined. You must specify the unicast IP address, cannot be `0.0.0.0`.
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- `osc_bind_port`: Port of the OSC server. Defaults to OscPort if specified.
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- `osc_disallow_arbritary_command`: Disallows pushing to arbritary commands to the cmd topic.
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- `commands`: Pre-defined commands to relay.
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This is an array with the following variables.
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- `command`: The command path to send.
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- `mqtt_topic`: Absolute MQTT topic to subscribe.
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- `mqtt_sub_topic`: Sub topic off relay MQTT topic to subscribe.
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osc/example/$SUB_TOPIC
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- `disallow_payload`: Rather or not to disallow payload to be relayed.
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- `default_payload`: Payload to send if no payload is provided via MQTT or if DisallowPayload is true. This is an array of strings/integers/timestamps/bools.
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<br/><br/>
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- `osc_subscriptions`: OSC Comamnds to send at regular intervals. Useful for OSC servers that offers data subscriptions.
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This is an array with the following variables.
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- `command`: The command to send every interval.
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- `payload`: Payload to send. This is an array of strings/integers/timestamps/bools.
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- `interval`: How often to call the command.
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<br/><br/>
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- `log_level`: How much logging.
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- 0 - Errors
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- 1 - MQTT and OSC receive logging.
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- 2 - MQTT and OSC send logging.
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- 3 - Debug
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## MQTT Message Example
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**Mute Behringer Wing channel 1**<br/>
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Topic: osc/behringer_wing/send/ch/1/mute<br/>
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Payload: `["1"]`
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**Behringer Wing get info**<br/>
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Topic: osc/behringer_wing/send/?<br/>
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Payload:
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## Build
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```bash
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go build
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```
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[Golang](https://go.dev/) 1.19 and below are known to have issues, 1.20 works.
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## Config file location
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Same directory as the binary, in your home directory at `~/.config/mqtt-osc-bridge/config.yaml`, or under etc at `/etc/mqtt-osc-bridge/config.yaml`.
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