我有一个范例，它播放音频刺激，然后是用户选择的刺激图像。我需要用视频替换音频刺激。这是范例的原始会话代码/实现。最后是我尝试编辑冻结尝试播放的会话代码失败的尝试之一。我无法满足所有代码，请让我知道我还应该添加什么。
会话：
.info{
transform: translateY(-80%);
}
}
我的代码：
using System;
using System.Linq;
using System.Media;
using System.Xml.Linq;
using System.Collections.Generic;
using System.Text;
namespace Memory
{
/// <summary>
/// this handles the creation, tracking, and scoring of a single session
/// </summary>
class Session
{
#region class Vars/Properties
File save;
ItemsPool _all, _presented, _selected, _displayed;
initVars Vars = initVars.defaults;
sessTimer _timer;
System.Timers.Timer onset;
bool p_onset = false;
string _output = "Memdata." + DateTime.Now.ToString("Mdyy-HHmm") + ".txt";
int _sessCount = 0;
SoundPlayer player;
/// <summary>
/// a collection of the sum of the scores for this session
/// </summary>
List<int[]> ScoreSum;
/// <summary>
/// the Sum of time results
/// </summary>
int TimesSum = 0;
/// <summary>
/// the number of items to display
/// </summary>
int _itemCount;
/// <summary>
/// the number of items to display
/// </summary>
public int itemCount
{
get { return _itemCount; }
set { _itemCount = value; }
}
/// <summary>
/// the session count
/// </summary>
public int SessionCount { get { return _sessCount; } }
string _prefix = "";
/// <summary>
/// the prefix for the Rows
/// </summary>
public string RowPrefix
{
get { return _prefix; }
set { _prefix = value; }
}
/// <summary>
/// the image width for each item
/// </summary>
public int ImgWidth { get; set; }
/// <summary>
/// the max runs for this session
/// </summary>
public int maxRuns { get; set; }
/// <summary>
/// debug value
/// </summary>
public bool debug { get { return Vars.debug; } }
/// <summary>
/// the onset value
/// </summary>
public int onsetValue { get { return Vars.onset; } }
/// <summary>
/// view Images before Audio
/// </summary>
public bool ViewImages { get { return Vars.ViewImages; } }
/// <summary>
/// allow correction
/// </summary>
public bool AllowCorrection { get { return Vars.allowCorrection; } }
/// <summary>
/// play sounds one at a time
/// </summary>
public bool playOne { get { return Vars.playOne; } }
#endregion
#region constructors
/// <summary>
/// create a new session and load settings from an XML string or file
/// </summary>
/// <param name="xml">either a path or a string of XML</param>
/// <param name="SaveName">the name of the output file</param>
public Session(string xml, string output, bool makeUnique)
{
if (output != "")
{ _output = output; }
save = new File(_output);
if (makeUnique)
{ save.MakeUnique(); }
XDocument setupXML;
//check to see if there are any XML nodes ie. is this a string of XML, or a path
string fchar = xml.Substring(0, 1);
if (fchar == "<")
{ setupXML = XDocument.Parse(xml); }
else
{ setupXML = XDocument.Load(xml); }
LoadXML(setupXML);
//set some class vars based on the initial vars
//these are variables that may change during the session
_itemCount = Vars.Columns;
ScoreSum = new List<int[]>();
ImgWidth = Vars.width;
maxRuns = Vars.maxRuns;
_presented = new ItemsPool();
_selected = new ItemsPool();
_timer = new sessTimer();
_timer.Update += new EventHandler<StringEventArgs>(_timer_Update);
}
void LoadXML(XDocument setupXML)
{
// get the initial variables
var initVars = from feed in setupXML.Descendants("var")
select new
{
Name = feed.Attribute("Name").Value,
Value = feed.Value
};
foreach (var feed in initVars)
{ Vars.SetVar(feed.Name, feed.Value); }
// parse the image and audio filename
var ifiles = from feed in setupXML.Descendants("stim")
select new Item
{
Name = feed.Attribute("Name").Value,
audio = feed.Element("audio").Value,
image = feed.Element("image").Value
};
_all = new ItemsPool();
foreach (Item it in ifiles)
{
_all.add(Item.getItem(it.Name
, Vars.ImageDirectory + it.image
, Vars.AudioDirectory + it.audio
));
}
}
#endregion
#region public methods
/// <summary>
/// randomly generate an items pool for playback
/// </summary>
/// <returns></returns>
public ItemsPool RandPresentation()
{
_presented = new ItemsPool();
_presented = RandPool(_itemCount, _all);
if (Vars.Randomize)
{
_displayed = new ItemsPool();
_displayed = RandPool(_itemCount, _presented);
}
else
{ _displayed = _presented; }
return _displayed;
}
ItemsPool RandPool(int count, ItemsPool pool)
{
ItemsPool rp = new ItemsPool();
Item it = RandItem(pool);
//get new randoms until we have enough
do
{
//since only unique items may be added to an ItemPool,
//we don't need to check if the the pool contains the random item
it = RandItem(pool);
rp.add(it);
} while (rp.count < count);
return rp;
}
/// <summary>
/// clear all, and start a new session
/// </summary>
public void startNew()
{
if (_timer.Active)
{ stopTimer(); }
_sessCount++;
_selected = new ItemsPool();
}
/// <summary>
/// decrement the session count
/// </summary>
public void decSessCount()
{
if (_sessCount > 0)
{ _sessCount--; }
}
/// <summary>
/// log the results to the save file
/// </summary>
public void LogResults()
{
if (_sessCount > 0)
{ logResults(); }
}
/// <summary>
/// add an item to the selected pool.
/// </summary>
/// <param name="it"></param>
public void Selected(Item it)
{
_selected.add(it);
if (_selected.count == _itemCount)
{
stopTimer();
LogResults();
}
}
private void stopTimer()
{
_timer.stop();
timerStopped(this, new EventArgs());
}
/// <summary>
/// remove an item from the selected pool
/// </summary>
/// <param name="it"></param>
public void remove(Item it)
{
if (_selected.Contains(it))
{
_selected.remove(it);
}
}
public void logSummary()
{
string[] lineSC = new string[_itemCount + 3];
string lineF = "\t\t{0}\t{1}";
string sumHdr1 = "\t\tPart\tN";
if (RowPrefix.Length > 7)
{
lineF = "\t{0}\t{1}";
sumHdr1 = "\tPart\t\tN";
}
lineSC[0] = String.Format(lineF, RowPrefix, _sessCount.ToString());
int ItemSum = 0;
//go through each column, get the sum
for (int i = 0; i < _itemCount; i++)
{
int cSum = 0;
//go through the list and get the score results for this column
foreach (int[] iarr in ScoreSum)
{
cSum += iarr[i];
}
ItemSum += cSum;
lineSC[i + 1] = cSum.ToString();
}
//Mean Time
double MTime = ((double)TimesSum / (double)_sessCount);
MTime = Math.Round(MTime, 3);
lineSC[_itemCount + 1] = MTime.ToString();
//Mean Sum
//double MSum = ((double)ItemSum / (double)_itemCount);
//MSum = Math.Round(MSum, 3);
//lineSC[_itemCount + 2] = MSum.ToString();
//Sum
lineSC[_itemCount + 2] = ItemSum.ToString();
//create the header
string[] sumHdr = new string[_itemCount + 2];
sumHdr[0] = sumHdr1;
for (int i = 0; i < _itemCount; i++)
{
sumHdr[i + 1] = "Itm" + (i + 1).ToString();
}
sumHdr[_itemCount + 1] = "M_Time\tSum";
//put to file
save.Append(dashBreak());
save.Append(sumHdr);
save.Append(lineSC);
save.Append(dashBreak());
}
string dashBreak()
{
StringBuilder sb = new StringBuilder("|--------");
for (int i = 0; i < _itemCount + 3; i++)
{
sb.Append("--------");
if (i == _itemCount + 2)
{
sb.Append("-----------|");
}
}
return sb.ToString();
}
#endregion
#region private methods
/// <summary>
/// save the session's results to a text file
/// </summary>
void logResults()
{
//there should be a scoring method here and perhaps an option to
//output scores instead of text options, but Susan did not want that.
//added scoring 5/8/09
int iCount = _presented.count;
string[] score = new string[iCount + 2];
int[] scs = new int[iCount];
for (int i = 0; i < iCount; i++)
{
Item pre = _presented.getItem(i);
Item sel = _selected.getItem(i);
int sc = 1;
//if (Item.Compare(pre,sel))
//{ sc = 1; }
if (pre.Name == sel.Name )
{ sc = 0; }
score[i + 1] = sc.ToString();
scs[i] = sc;
}
//log for the summary
ScoreSum.Add(scs);
TimesSum += _timer.Time;
//create array for log file
score[0] = String.Format("{0}\t{1}\t{2}", RowPrefix, _sessCount.ToString(), "errs");
score[iCount + 1] = _timer.Time.ToString();
//add the presented line
save.Append(MakeRow(_presented, "pres"));
//add the selected line
save.Append(MakeRow(_selected, "sel"));
//add the score line
save.Append(score);
//put an extra line in there
save.Append("");
}
string[] MakeRow(ItemsPool ip, string prefix)
{
string[] row = new string[ip.count + 1]; // 2];
row[0] = String.Format("{0}\t{1}\t{2}",RowPrefix, _sessCount.ToString(), prefix);
if (ip.count > 0)
{
for (int i = 0; i < ip.count; i++)
{
Item it = ip.getItem(i);
row[i + 1] = it.Name;
}
}
//row[ip.count + 1] = _timer.Time.ToString();
return row;
}
Item RandItem(ItemsPool pool)
{
//setup a new random object
Random r = new Random();
/* the random generator has a fear of the last option,
* so I'm giving it two chances to grab the last item...
* this may need adjustment.
*/
int _play = r.Next(pool.count + 1);
if (_play >= pool.count)
{ _play -= 1; }
Item ri = pool.getItem(_play);
return ri;
}
#endregion
#region audio player methods
void playItem(Item it)
{
player = new SoundPlayer();
player.LoadCompleted += new System.ComponentModel.AsyncCompletedEventHandler(player_LoadCompleted);
player.SoundLocation = it.audio;
player.Load();
}
void player_LoadCompleted(object sender, System.ComponentModel.AsyncCompletedEventArgs e)
{
if (p_onset)
{ player.Play(); }
else
{
player.PlaySync();
if (!Vars.playOne)
{ PlayNext(); }
}
}
int playQueue = 0;
public void playLast()
{
int p = playQueue;
if (p > 0)
{ p--; }
playItem(_presented.getItem(p));
}
public void PlayNext()
{
if (playQueue < _presented.count)
{
Item it = _presented.getItem(playQueue);
playQueue++;
playItem(it);
}
else
{
playQueue = 0;
_timer.start();
if (p_onset)
{
onset.Stop();
onset.Enabled = false;
onsetPlayFinished(this, new EventArgs());
}
}
}
public void playOnset()
{
p_onset = true;
onset = new System.Timers.Timer(Vars.onset);
onset.Elapsed += new System.Timers.ElapsedEventHandler(onset_Elapsed);
onset.Enabled = true;
if (!Vars.playOne)
{
PlayNext();
onset.Start();
}
}
void onset_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
if (!Vars.playOne)
{ PlayNext(); }
}
#endregion
#region events & handlers
public event EventHandler onsetPlayFinished;
public event EventHandler<StringEventArgs> TimerUpdate;
public event EventHandler timerStopped;
void _timer_Update(object sender, StringEventArgs e)
{ TimerUpdate(sender, e); }
#endregion
}