local function stop_capture(self)
    if self.cameraframe == nil then
        return
    end

    self.cameraframe = nil
    camera.stop_capture()

    label.set_text("logo#status", "Capture Status: OFF")
end


local function start_capture(self)
    if not camera then
        label.set_text("logo#status", "Capture Status: UNAVAILABLE")
        return
    end

    local sysinfo = sys.get_sys_info()

    local quality = camera.CAPTURE_QUALITY_HIGH
    local type = camera.CAMERA_TYPE_FRONT
    if sysinfo.system_name == 'iPhone OS' then
        type = camera.CAMERA_TYPE_BACK
        quality = camera.CAPTURE_QUALITY_MEDIUM
    end

    camera.start_capture(type, quality, function(self, status)
        if status == camera.STATUS_STARTED then
            self.cameraframe = camera.get_frame()
            self.camerainfo = camera.get_info()
            self.cameratextureheader = {width=self.camerainfo.width,
            height=self.camerainfo.height,
            type=resource.TEXTURE_TYPE_2D,
            format=resource.TEXTURE_FORMAT_RGB,
            num_mip_maps=1 }
            label.set_text("logo#status", "Capture Status: ON")
        else
            label.set_text("logo#status", "Capture Status: ERROR")
        end
    end)
end

function init(self)
    msg.post(".", "acquire_input_focus")

    local logosize = 128
    local screen_width = sys.get_config("display.width", 600)
    local screen_height = sys.get_config("display.height", 800)
    local scale_width = screen_width / logosize
    local scale_height = screen_height / logosize

    go.set("#sprite", "scale", vmath.vector3(scale_width, scale_height, 1) )


    start_capture(self)
end

function final(self)
    if self.cameraframe ~= nil then
        camera.stop_capture()
    end
end


function update(self, dt)
    if self.cameraframe ~= nil then
        local pathmodelcamera = go.get("#sprite", "texture0")
        resource.set_texture(pathmodelcamera, self.cameratextureheader, self.cameraframe)
    end
end


function on_input(self, action_id, action)
    if (action_id == hash("space") or action_id == hash("touch")) and action.pressed then
        if self.cameraframe == nil then
            start_capture(self)
        else
            stop_capture(self)
        end
    end
end