1 changed files with 202 additions and 179 deletions
+ 202
- 179
scenarios/scripts/p300-tactile-accumulator.lua
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| function arrayMax(a) | |||||
| if #a == 0 then return nil, nil end | |||||
| local maxIdx, maxValue = 0, a[0] | |||||
| for i = 1, (#a -1 ) do | |||||
| if maxValue < a[i] then | |||||
| maxIdx, maxValue = i, a[i] | |||||
| end | |||||
| end | |||||
| return maxIdx, maxValue | |||||
| end | |||||
| List = {} | |||||
| function List.new () | |||||
| return {first = 0, last = -1} | |||||
| end | |||||
| function List.pushright (list, value) | |||||
| local last = list.last + 1 | |||||
| list.last = last | |||||
| list[last] = value | |||||
| end | |||||
| function List.popleft (list) | |||||
| local first = list.first | |||||
| if first > list.last then | |||||
| error("list is empty") | |||||
| end | |||||
| local value = list[first] | |||||
| list[first] = nil -- to allow garbage collection | |||||
| list.first = first + 1 | |||||
| return value | |||||
| end | |||||
| function List.isempty (list) | |||||
| if list.first > list.last then | |||||
| return true | |||||
| else | |||||
| return false | |||||
| end | |||||
| end | |||||
| function initialize(box) | |||||
| dofile(box:get_config("${Path_Data}") .. "/plugins/stimulation/lua-stimulator-stim-codes.lua") | |||||
| row_base = _G[box:get_setting(2)] | |||||
| n_tactilos = box:get_setting(3) | |||||
| segment_start = _G[box:get_setting(4)] | |||||
| segment_stop = _G[box:get_setting(5)] | |||||
| -- 0 inactive, 1 segment started, 2 segment stopped (can vote) | |||||
| segment_status = 0 | |||||
| -- 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. | |||||
| target_fifo = List.new() | |||||
| -- box:log("Info", string.format("pop %d %d", id[1], id[2])) | |||||
| row_votes = {} | |||||
| do_debug = false | |||||
| end | |||||
| function uninitialize(box) | |||||
| end | |||||
| function process(box) | |||||
| -- loops until box is stopped | |||||
| while box:keep_processing() do | |||||
| -- first, parse the timeline stream | |||||
| for stimulation = 1, box:get_stimulation_count(2) do | |||||
| -- gets the received stimulation | |||||
| local identifier, date, duration = box:get_stimulation(2, 1) | |||||
| -- discards it | |||||
| box:remove_stimulation(2, 1) | |||||
| if identifier == segment_start then | |||||
| if do_debug then | |||||
| box:log("Info", string.format("Trial start")) | |||||
| box:log("Info", string.format("Clear votes")) | |||||
| end | |||||
| -- zero the votes | |||||
| row_votes = {} | |||||
| target_fifo = List.new() | |||||
| -- fixme fixed 20 | |||||
| for i = 0,20 do | |||||
| row_votes[i] = 0 | |||||
| end | |||||
| segment_status = 1 | |||||
| end | |||||
| -- Does the identifier code a flash? if so, put into fifo | |||||
| if segment_status == 1 and identifier >= row_base and identifier <= OVTK_StimulationId_LabelEnd then | |||||
| -- assume rows before cols | |||||
| if identifier < (row_base + n_tactilos) then | |||||
| local t = {"row", identifier - row_base} | |||||
| List.pushright(target_fifo,t) | |||||
| if do_debug then | |||||
| box:log("Info", string.format("Push row target %d", identifier - row_base )) | |||||
| end | |||||
| end | |||||
| end | |||||
| if identifier == segment_stop then | |||||
| if do_debug then | |||||
| box:log("Info", string.format("Trial stop")) | |||||
| end | |||||
| segment_status = 2 | |||||
| end | |||||
| end | |||||
| -- then parse the classifications | |||||
| for stimulation = 1, box:get_stimulation_count(1) do | |||||
| -- gets the received stimulation | |||||
| local identifier, date, duration = box:get_stimulation(1, 1) | |||||
| -- discards it | |||||
| box:remove_stimulation(1, 1) | |||||
| -- Is it an in-class prediction? | |||||
| if identifier == OVTK_StimulationId_Target then | |||||
| local t = List.popleft(target_fifo) | |||||
| if do_debug then | |||||
| box:log("Info", string.format("Pred fifo %s %d is target", t[1], t[2])) | |||||
| end | |||||
| if t[1]=="row" then | |||||
| row_votes[t[2]] = row_votes[t[2]] + 1 | |||||
| end | |||||
| end | |||||
| if identifier == OVTK_StimulationId_NonTarget then | |||||
| local t = List.popleft(target_fifo) | |||||
| if do_debug then | |||||
| box:log("Info", string.format("Pred fifo %s %d is nontarget", t[1], t[2])) | |||||
| end | |||||
| end | |||||
| end | |||||
| if segment_status == 2 and List.isempty(target_fifo) then | |||||
| -- output the vote after the segment end when we've matched all predictions | |||||
| local maxRowIdx, maxRowValue = arrayMax(row_votes) | |||||
| if maxRowValue == 0 then | |||||
| box:log("Warning", string.format("Classifier predicted 'no p300' for all flashes of the trial")); | |||||
| end | |||||
| if do_debug then | |||||
| local rowVotes = 0 | |||||
| for ir, val in pairs(row_votes) do | |||||
| rowVotes = rowVotes + val | |||||
| end | |||||
| box:log("Info", string.format("Vote [%d] wt [%d]", maxRowIdx+row_base, maxRowValue)) | |||||
| end | |||||
| local now = box:get_current_time() | |||||
| box:send_stimulation(1, maxRowIdx + row_base, now, 0) | |||||
| segment_status = 0 | |||||
| end | |||||
| box:sleep() | |||||
| end | |||||
| end | |||||
| function arrayMax(a) | |||||
| if #a == 0 then return nil, nil end | |||||
| local maxIdx, maxValue = 0, a[0] | |||||
| for i = 1, (#a -1 ) do | |||||
| if maxValue < a[i] then | |||||
| maxIdx, maxValue = i, a[i] | |||||
| end | |||||
| end | |||||
| return maxIdx, maxValue | |||||
| end | |||||
| -- For handling target fifo | |||||
| List = {} | |||||
| function List.new () | |||||
| return {first = 0, last = -1} | |||||
| end | |||||
| function List.pushright (list, value) | |||||
| local last = list.last + 1 | |||||
| list.last = last | |||||
| list[last] = value | |||||
| end | |||||
| function List.popleft (list) | |||||
| local first = list.first | |||||
| if first > list.last then | |||||
| error("list is empty") | |||||
| end | |||||
| local value = list[first] | |||||
| list[first] = nil -- to allow garbage collection | |||||
| list.first = first + 1 | |||||
| return value | |||||
| end | |||||
| function List.isempty (list) | |||||
| if list.first > list.last then | |||||
| return true | |||||
| else | |||||
| return false | |||||
| end | |||||
| end | |||||
| -- this function is called when the box is initialized | |||||
| function initialize(box) | |||||
| dofile(box:get_config("${Path_Data}") .. "/plugins/stimulation/lua-stimulator-stim-codes.lua") | |||||
| row_base = _G[box:get_setting(2)] | |||||
| n_tactilos = box:get_setting(3) | |||||
| segment_start = _G[box:get_setting(4)] | |||||
| segment_stop = _G[box:get_setting(5)] | |||||
| col_base = row_base + n_tactilos | |||||
| -- 0 inactive, 1 segment started, 2 segment stopped (can vote) | |||||
| segment_status = 0 | |||||
| -- 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. | |||||
| target_fifo = List.new() | |||||
| -- box:log("Info", string.format("pop %d %d", id[1], id[2])) | |||||
| row_votes = {} | |||||
| col_votes = {} | |||||
| do_debug = false | |||||
| end | |||||
| -- this function is called when the box is uninitialized | |||||
| function uninitialize(box) | |||||
| end | |||||
| function process(box) | |||||
| -- loops until box is stopped | |||||
| while box:keep_processing() do | |||||
| -- first, parse the timeline stream | |||||
| for stimulation = 1, box:get_stimulation_count(2) do | |||||
| -- gets the received stimulation | |||||
| local identifier, date, duration = box:get_stimulation(2, 1) | |||||
| -- discards it | |||||
| box:remove_stimulation(2, 1) | |||||
| if identifier == segment_start then | |||||
| if do_debug then | |||||
| box:log("Info", string.format("Trial start")) | |||||
| box:log("Info", string.format("Clear votes")) | |||||
| end | |||||
| -- zero the votes | |||||
| col_votes = {} | |||||
| row_votes = {} | |||||
| target_fifo = List.new() | |||||
| -- fixme fixed 20 | |||||
| for i = 0,20 do | |||||
| col_votes[i] = 0 | |||||
| row_votes[i] = 0 | |||||
| end | |||||
| segment_status = 1 | |||||
| end | |||||
| -- Does the identifier code a flash? if so, put into fifo | |||||
| if segment_status == 1 and identifier >= row_base and identifier <= OVTK_StimulationId_LabelEnd then | |||||
| -- assume rows before cols | |||||
| if identifier < col_base then | |||||
| local t = {"row", identifier - row_base} | |||||
| List.pushright(target_fifo,t) | |||||
| if do_debug then | |||||
| box:log("Info", string.format("Push row target %d", identifier - row_base )) | |||||
| end | |||||
| else | |||||
| local t = {"col", identifier - col_base} | |||||
| List.pushright(target_fifo,t) | |||||
| if do_debug then | |||||
| box:log("Info", string.format("Push col target %d", identifier - col_base )) | |||||
| end | |||||
| end | |||||
| end | |||||
| if identifier == segment_stop then | |||||
| if do_debug then | |||||
| box:log("Info", string.format("Trial stop")) | |||||
| end | |||||
| segment_status = 2 | |||||
| end | |||||
| end | |||||
| -- then parse the classifications | |||||
| for stimulation = 1, box:get_stimulation_count(1) do | |||||
| -- gets the received stimulation | |||||
| local identifier, date, duration = box:get_stimulation(1, 1) | |||||
| -- discards it | |||||
| box:remove_stimulation(1, 1) | |||||
| -- Is it an in-class prediction? | |||||
| if identifier == OVTK_StimulationId_Target then | |||||
| local t = List.popleft(target_fifo) | |||||
| if do_debug then | |||||
| box:log("Info", string.format("Pred fifo %s %d is target", t[1], t[2])) | |||||
| end | |||||
| if t[1]=="row" then | |||||
| row_votes[t[2]] = row_votes[t[2]] + 1 | |||||
| else | |||||
| col_votes[t[2]] = col_votes[t[2]] + 1 | |||||
| end | |||||
| end | |||||
| if identifier == OVTK_StimulationId_NonTarget then | |||||
| local t = List.popleft(target_fifo) | |||||
| if do_debug then | |||||
| box:log("Info", string.format("Pred fifo %s %d is nontarget", t[1], t[2])) | |||||
| end | |||||
| end | |||||
| end | |||||
| if segment_status == 2 and List.isempty(target_fifo) then | |||||
| -- output the vote after the segment end when we've matched all predictions | |||||
| local maxRowIdx, maxRowValue = arrayMax(row_votes) | |||||
| local maxColIdx, maxColValue = arrayMax(col_votes) | |||||
| if maxRowValue == 0 and maxColValue == 0 then | |||||
| box:log("Warning", string.format("Classifier predicted 'no p300' for all flashes of the trial")); | |||||
| end | |||||
| if do_debug then | |||||
| local rowVotes = 0 | |||||
| local colVotes = 0 | |||||
| for ir, val in pairs(row_votes) do | |||||
| rowVotes = rowVotes + val | |||||
| end | |||||
| for ir, val in pairs(col_votes) do | |||||
| colVotes = colVotes + val | |||||
| end | |||||
| box:log("Info", string.format("Vote [%d %d] wt [%d,%d]", maxRowIdx+row_base, maxColIdx+col_base, maxRowValue, maxColValue)) | |||||
| box:log("Info", string.format(" Total [%d %d]", rowVotes, colVotes)) | |||||
| end | |||||
| local now = box:get_current_time() | |||||
| box:send_stimulation(1, maxRowIdx + row_base, now, 0) | |||||
| -- box:send_stimulation(2, maxColIdx + col_base, now, 0) | |||||
| segment_status = 0 | |||||
| end | |||||
| box:sleep() | |||||
| end | |||||
| end | |||||
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