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165 lines
3.2 KiB
CoffeeScript
165 lines
3.2 KiB
CoffeeScript
class AsciiIo.Movie
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MIN_DELAY: 0.01
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constructor: (@model, @options) ->
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@reset()
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@startTimeReporter()
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_.extend(this, Backbone.Events)
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reset: ->
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@frameNo = 0
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@dataIndex = 0
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@playedTimeSum = 0
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@playing = false
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@lastFrameTime = undefined
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@timeElapsedBeforePause = undefined
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isLoaded: ->
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@model.get('escaped_stdout_data') != undefined
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load: ->
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@model.fetch
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success: =>
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@trigger('movie-loaded', @model)
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timing: ->
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@model.get('stdout_timing_data')
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data: ->
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unless @_data
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d = @model.get('escaped_stdout_data')
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d = eval "'" + d + "'"
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d = ArchUtils.bz2.decode(d)
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@_data = d
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@_data
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play: ->
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return if @isPlaying()
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if @isFinished()
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@restart()
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else if @isPaused()
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@resume()
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else
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@start()
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start: ->
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if @options.benchmark
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@startTime = (new Date).getTime()
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@playing = true
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@lastFrameTime = (new Date()).getTime()
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@nextFrame()
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stop: ->
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@playing = false
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clearInterval @nextFrameTimeoutId
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@timeElapsedBeforePause = (new Date()).getTime() - @lastFrameTime
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restart: ->
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@reset()
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@start()
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@startTimeReporter()
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pause: ->
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return if @isPaused()
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@stop()
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@trigger('movie-playback-paused')
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resume: ->
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return if @isPlaying()
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@playing = true
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frame = @timing()[@frameNo]
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[delay, count] = frame
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delay -= @timeElapsedBeforePause
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@processFrameWithDelay(delay)
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@trigger('movie-playback-resumed')
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togglePlay: ->
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if @isPlaying() then @pause() else @play()
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isPlaying: ->
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@playing
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isPaused: ->
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!@isPlaying() and !@isFinished() and @frameNo > 0
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isFinished: ->
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!@isPlaying() and @isLoaded() and @frameNo >= @timing().length
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seek: (percent) ->
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@pause()
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@rewindTo(percent)
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@play()
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rewindTo: (percent) ->
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# TODO
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startTimeReporter: ->
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@timeReportId = setInterval(
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=> @trigger('movie-time', @currentTime())
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100
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)
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stopTimeReporter: ->
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clearInterval @timeReportId
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currentTime: ->
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if @isPlaying()
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now = (new Date()).getTime()
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delta = now - @lastFrameTime
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@playedTimeSum + delta
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else if @isPaused()
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@playedTimeSum + @timeElapsedBeforePause
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else if @isFinished()
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@playedTimeSum
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else
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0 # not started
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nextFrame: ->
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if frame = @timing()[@frameNo]
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[delay, count] = frame
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if delay <= @MIN_DELAY
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@processFrame()
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else
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realDelay = delay * 1000 * (1.0 / @options.speed)
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@processFrameWithDelay(realDelay)
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true
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else
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@playing = false
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@stopTimeReporter()
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@trigger('movie-finished')
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if @options.benchmark
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now = (new Date).getTime()
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console.log "finished in #{(now - @startTime) / 1000.0}s"
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false
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processFrameWithDelay: (delay) ->
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@nextFrameTimeoutId = setTimeout(
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=>
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@trigger('movie-awake')
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@processFrame()
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delay
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)
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processFrame: ->
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frame = @timing()[@frameNo]
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[delay, count] = frame
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frameData = @data().slice(@dataIndex, @dataIndex + count)
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@trigger('movie-frame', frameData)
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@frameNo += 1
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@dataIndex += count
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@playedTimeSum += delay * 1000
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@lastFrameTime = (new Date()).getTime()
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@nextFrame()
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