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-- Script for Astra 5.62 and newer
-- Script implements API method to switch between inputs
-- Installation: Save script input /etc/astra/mod/change-input.lua
-- Usage:
-- 1. Create new stream
-- 2. In the stream settings set "Backup Type" to "Passive Backup"
-- 3. Save stream and check stream ID, you may find in the stream settings or in the URL. For example : http://server.local:8000/#/stream/server.local:8000/a018 "a018" - this is stream ID
-- 4. Call API method: curl -X POST -d "{\"cmd\":\"change-input\",\"id\":\"a018\"}" http://admin:[email protected]:8000/control/
-- server.local - this is server address
-- 8000 - port to the Astra web interface
-- a018 - stream ID
 
control_api["change-input"] = function(server, client, data)
    local channel_data = channel_list_ID[data.id]
    if not channel_data then
        control_api_response(server, client, { ["change-input"] = "er" })
        return nil
    end
 
    local input_id = channel_data.active_input_id
    local next_input_id = input_id + 1
    if next_input_id > #channel_data.input then
        next_input_id = 1
    end
    channel_kill_input(channel_data, input_id)
    log.debug("[" .. channel_data.config.name .. "] Destroy input #" .. input_id)
    channel_data.active_input_id = -1
    collectgarbage()
 
    channel_init_input(channel_data, next_input_id)
    control_api_response(server, client, { ["change-input"] = "ok" })
end