cec-web

A REST micro webservice to control devices via the CEC bus in HDMI.

Written in Go with some help from Gin, Go-Flags and cec.go.

Usage

Usage:
  cec-web [OPTIONS]

Application Options:
  -i, --ip=      ip to listen on (127.0.0.1)
  -p, --port=    tcp port to listen on (8080)
  -a, --adapter= cec adapter to connect to [RPI, usb, ...]
  -n, --name=    OSD name to announce on the cec bus (REST Gateway)

JSON API

The app provides the following JSON based RESTful API:

Scan CEC bus

• GET /info - Information about all the connected devices on the CEC bus

Resonse

HTTP/1.1 200 OK

{
  "Playback":{
    "OSDName":"REST Gateway",
    "Vendor":"Panasonic",
    "LogicalAddress":4,
    "ActiveSource":false,
    "PowerStatus":"on",
    "PhysicalAddress":"f.f.f.f"
  },
  "TV":{
    "OSDName":"TV",
    "Vendor":"Panasonic",
    "LogicalAddress":0,
    "ActiveSource":false,
    "PowerStatus":"standby",
    "PhysicalAddress":"0.0.0.0"
  }
}

Power

• GET /power/:device - Request device power status
• PUT /power/:device - Power on device
• DELETE /power/:device - Put device in standby

:device is the name of the device on the CEC bus (see GET /info)

Responses

success (PUT/DELETE); is powered on (GET)

HTTP/1.1 204 No Content

is in standy/no power (GET)

HTTP/1.1 404 Not Found

Volume (not supported by all devices)

• PUT /volume/up - Increase volume
• PUT /volume/down - Reduce volume
• PUT /volume/mute - Mute/unmute audio

Response

HTTP/1.1 204 No Content

Remote control

• PUT /key/:device/:key - Send key press command followed by key release

:device is the name of the device on the CEC bus (see GET /info) :key is the name (e.g. down) or the keycode in hex (e.g. 0x00) of a remote key

Response

HTTP/1.1 204 No Content

Raw CEC commands

• POST /transmit - Send a list of CEC commands over the bus

data example:

[
  "40:04",
  "40:64:00:48:65:6C:6C:6F:20:77:6F:72:6C:64"
]

Hint: Use cec-o-matic to generate commands.