„scenarios/scripts/p300-tactile-accumulator.lua“ ändern
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@ -1,182 +1,202 @@
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function arrayMax(a)
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if #a == 0 then return nil, nil end
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local maxIdx, maxValue = 0, a[0]
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for i = 1, (#a -1 ) do
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if maxValue < a[i] then
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maxIdx, maxValue = i, a[i]
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end
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end
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return maxIdx, maxValue
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end
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-- For handling target fifo
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List = {}
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function List.new ()
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return {first = 0, last = -1}
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end
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function List.pushright (list, value)
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local last = list.last + 1
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list.last = last
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list[last] = value
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end
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function List.popleft (list)
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local first = list.first
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if first > list.last then
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error("list is empty")
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end
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local value = list[first]
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list[first] = nil -- to allow garbage collection
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list.first = first + 1
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return value
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end
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function List.isempty (list)
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if list.first > list.last then
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return true
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else
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return false
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end
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end
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-- this function is called when the box is initialized
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function initialize(box)
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dofile(box:get_config("${Path_Data}") .. "/plugins/stimulation/lua-stimulator-stim-codes.lua")
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row_base = _G[box:get_setting(2)]
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n_tactilos = box:get_setting(3)
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segment_start = _G[box:get_setting(4)]
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segment_stop = _G[box:get_setting(5)]
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-- 0 inactive, 1 segment started, 2 segment stopped (can vote)
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segment_status = 0
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-- the idea is to push the flash states to the fifo, and when predictions arrive (with some delay), they are matched in oldest-first fashion.
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target_fifo = List.new()
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-- box:log("Info", string.format("pop %d %d", id[1], id[2]))
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row_votes = {}
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do_debug = false
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end
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-- this function is called when the box is uninitialized
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function uninitialize(box)
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end
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function process(box)
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-- loops until box is stopped
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while box:keep_processing() do
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-- first, parse the timeline stream
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for stimulation = 1, box:get_stimulation_count(2) do
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-- gets the received stimulation
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local identifier, date, duration = box:get_stimulation(2, 1)
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-- discards it
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box:remove_stimulation(2, 1)
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if identifier == segment_start then
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if do_debug then
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box:log("Info", string.format("Trial start"))
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box:log("Info", string.format("Clear votes"))
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end
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-- zero the votes
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row_votes = {}
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target_fifo = List.new()
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-- fixme fixed 20
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for i = 0,20 do
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row_votes[i] = 0
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end
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segment_status = 1
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end
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-- Does the identifier code a flash? if so, put into fifo
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if segment_status == 1 and identifier >= row_base and identifier <= OVTK_StimulationId_LabelEnd then
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-- assume rows before cols
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if identifier < (row_base + n_tactilos) then
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local t = {"row", identifier - row_base}
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List.pushright(target_fifo,t)
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if do_debug then
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box:log("Info", string.format("Push row target %d", identifier - row_base ))
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end
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end
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end
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if identifier == segment_stop then
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if do_debug then
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box:log("Info", string.format("Trial stop"))
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end
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segment_status = 2
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end
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end
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-- then parse the classifications
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for stimulation = 1, box:get_stimulation_count(1) do
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-- gets the received stimulation
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local identifier, date, duration = box:get_stimulation(1, 1)
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-- discards it
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box:remove_stimulation(1, 1)
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-- Is it an in-class prediction?
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if identifier == OVTK_StimulationId_Target then
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local t = List.popleft(target_fifo)
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if do_debug then
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box:log("Info", string.format("Pred fifo %s %d is target", t[1], t[2]))
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end
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if t[1]=="row" then
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row_votes[t[2]] = row_votes[t[2]] + 1
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end
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end
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if identifier == OVTK_StimulationId_NonTarget then
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local t = List.popleft(target_fifo)
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if do_debug then
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box:log("Info", string.format("Pred fifo %s %d is nontarget", t[1], t[2]))
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end
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end
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end
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if segment_status == 2 and List.isempty(target_fifo) then
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-- output the vote after the segment end when we've matched all predictions
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local maxRowIdx, maxRowValue = arrayMax(row_votes)
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if maxRowValue == 0 then
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box:log("Warning", string.format("Classifier predicted 'no p300' for all flashes of the trial"));
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end
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if do_debug then
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local rowVotes = 0
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for ir, val in pairs(row_votes) do
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rowVotes = rowVotes + val
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end
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box:log("Info", string.format("Vote [%d] wt [%d]", maxRowIdx+row_base, maxRowValue))
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end
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local now = box:get_current_time()
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box:send_stimulation(1, maxRowIdx + row_base, now, 0)
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segment_status = 0
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end
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box:sleep()
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end
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end
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function arrayMax(a)
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if #a == 0 then return nil, nil end
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local maxIdx, maxValue = 0, a[0]
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for i = 1, (#a -1 ) do
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if maxValue < a[i] then
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maxIdx, maxValue = i, a[i]
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end
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end
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return maxIdx, maxValue
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end
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-- For handling target fifo
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List = {}
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function List.new ()
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return {first = 0, last = -1}
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end
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function List.pushright (list, value)
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local last = list.last + 1
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list.last = last
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list[last] = value
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end
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function List.popleft (list)
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local first = list.first
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if first > list.last then
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error("list is empty")
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end
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local value = list[first]
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list[first] = nil -- to allow garbage collection
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list.first = first + 1
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return value
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end
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function List.isempty (list)
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if list.first > list.last then
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return true
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else
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return false
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end
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end
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-- this function is called when the box is initialized
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function initialize(box)
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dofile(box:get_config("${Path_Data}") .. "/plugins/stimulation/lua-stimulator-stim-codes.lua")
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row_base = _G[box:get_setting(2)]
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n_tactilos = box:get_setting(3)
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segment_start = _G[box:get_setting(4)]
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segment_stop = _G[box:get_setting(5)]
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col_base = row_base + n_tactilos
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-- 0 inactive, 1 segment started, 2 segment stopped (can vote)
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segment_status = 0
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-- the idea is to push the flash states to the fifo, and when predictions arrive (with some delay), they are matched in oldest-first fashion.
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target_fifo = List.new()
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-- box:log("Info", string.format("pop %d %d", id[1], id[2]))
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row_votes = {}
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col_votes = {}
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do_debug = false
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end
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-- this function is called when the box is uninitialized
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function uninitialize(box)
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end
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function process(box)
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-- loops until box is stopped
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while box:keep_processing() do
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-- first, parse the timeline stream
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for stimulation = 1, box:get_stimulation_count(2) do
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-- gets the received stimulation
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local identifier, date, duration = box:get_stimulation(2, 1)
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-- discards it
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box:remove_stimulation(2, 1)
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if identifier == segment_start then
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if do_debug then
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box:log("Info", string.format("Trial start"))
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box:log("Info", string.format("Clear votes"))
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end
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-- zero the votes
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col_votes = {}
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row_votes = {}
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target_fifo = List.new()
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-- fixme fixed 20
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for i = 0,20 do
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col_votes[i] = 0
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row_votes[i] = 0
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end
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segment_status = 1
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end
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-- Does the identifier code a flash? if so, put into fifo
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if segment_status == 1 and identifier >= row_base and identifier <= OVTK_StimulationId_LabelEnd then
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-- assume rows before cols
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if identifier < col_base then
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local t = {"row", identifier - row_base}
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List.pushright(target_fifo,t)
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if do_debug then
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box:log("Info", string.format("Push row target %d", identifier - row_base ))
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end
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else
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local t = {"col", identifier - col_base}
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List.pushright(target_fifo,t)
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if do_debug then
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box:log("Info", string.format("Push col target %d", identifier - col_base ))
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end
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end
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end
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if identifier == segment_stop then
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if do_debug then
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box:log("Info", string.format("Trial stop"))
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end
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segment_status = 2
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end
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end
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-- then parse the classifications
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for stimulation = 1, box:get_stimulation_count(1) do
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-- gets the received stimulation
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local identifier, date, duration = box:get_stimulation(1, 1)
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-- discards it
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box:remove_stimulation(1, 1)
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-- Is it an in-class prediction?
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if identifier == OVTK_StimulationId_Target then
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local t = List.popleft(target_fifo)
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if do_debug then
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box:log("Info", string.format("Pred fifo %s %d is target", t[1], t[2]))
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end
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if t[1]=="row" then
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row_votes[t[2]] = row_votes[t[2]] + 1
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else
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col_votes[t[2]] = col_votes[t[2]] + 1
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end
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end
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if identifier == OVTK_StimulationId_NonTarget then
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local t = List.popleft(target_fifo)
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if do_debug then
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box:log("Info", string.format("Pred fifo %s %d is nontarget", t[1], t[2]))
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end
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end
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end
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if segment_status == 2 and List.isempty(target_fifo) then
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-- output the vote after the segment end when we've matched all predictions
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local maxRowIdx, maxRowValue = arrayMax(row_votes)
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local maxColIdx, maxColValue = arrayMax(col_votes)
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if maxRowValue == 0 and maxColValue == 0 then
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box:log("Warning", string.format("Classifier predicted 'no p300' for all flashes of the trial"));
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end
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if do_debug then
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local rowVotes = 0
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local colVotes = 0
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for ir, val in pairs(row_votes) do
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rowVotes = rowVotes + val
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end
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for ir, val in pairs(col_votes) do
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colVotes = colVotes + val
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end
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box:log("Info", string.format("Vote [%d %d] wt [%d,%d]", maxRowIdx+row_base, maxColIdx+col_base, maxRowValue, maxColValue))
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box:log("Info", string.format(" Total [%d %d]", rowVotes, colVotes))
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end
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local now = box:get_current_time()
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box:send_stimulation(1, maxRowIdx + row_base, now, 0)
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-- box:send_stimulation(2, maxColIdx + col_base, now, 0)
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segment_status = 0
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end
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box:sleep()
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end
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end
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