/// <summary>
/// Function to analyse a string line of a v1 timecodes file
/// </summary>
/// <param name="frame">string which contains a valid line</param>
/// <param name="vfl">the video frame list to write to</param>
private void AnalyseV1(String frame, VideoFrameList vfl)
{
//Get elements
//elements[0] first frame
//elememts[1] last frame
//elements[2] framerate
String[] elements = frame.Split(new String[] { "," }, StringSplitOptions.None);
//check for valid elements
if (elements.Length == 3)
{
//Calculate FrameInfo data
int start = Convert.ToInt32(elements[0]);
int end = Convert.ToInt32(elements[1]);
for (int i = start; i <= end; i++)
{
VideoFrame tmp = new VideoFrame();
tmp.FrameNumber = i;
tmp.FrameRate = AcHelper.DecimalParse(elements[2]);
if (i == 0)
{
tmp.FrameStartTime = 0.0m;
}
else
{
tmp.FrameStartTime = vfl.FrameList[i - 1].FrameDuration + vfl.FrameList[i - 1].FrameStartTime;
}
//Add FrameInfo to FrameList
vfl.Add(tmp);
}
}
else
{
throw (new AcException("Invalid format v1 timecodes!"));
}
}
private void addFrameRangeToList()
{
//Get start frame
Object startFrameObj = AcControls.AcInputBox.AcInputBox.Show("Enter the start frame of the frame range:", "Enter frame...", "");
if (startFrameObj == null)
{
return;
}
//Get end frame
Object endFrameObj = AcControls.AcInputBox.AcInputBox.Show("Enter the end frame of the frame range:", "Enter frame...", "");
if (endFrameObj == null)
{
return;
}
//Get start time
Object startTimeObj = AcControls.AcInputBox.AcInputBox.Show("Enter the start time of the first frame:", "Enter start time...", "");
if (startFrameObj == null)
{
return;
}
//Check for duration or frame rate
Boolean useDuration = false;
if (ShowQuestion("Do you want to enter duration in ms?\r\n(Answering No will prompt you to enter frame rate in fps))",
"Select duration type...")
== DialogResult.Yes)
{
useDuration = true;
}
Object durationObj = null;
Object frameRateObj = null;
if (useDuration)
{
//Get duration
durationObj = AcControls.AcInputBox.AcInputBox.Show("Enter the duration for each frame in ms:", "Enter frame duration...", "");
if (durationObj == null)
{
return;
}
}
else
{
//Get frame rate
frameRateObj = AcControls.AcInputBox.AcInputBox.Show("Enter the frame rate for each frame in fps:", "Enter frame rate...", "");
if (frameRateObj == null)
{
return;
}
}
Decimal currentStartTime = AcHelper.DecimalParse((String)startTimeObj);
Decimal durationAmount = Decimal.MinValue;
durationAmount = useDuration ? AcHelper.DecimalParse((String)durationObj) : AcHelper.DecimalParse((String)frameRateObj);
//Add frame range
for (Int32 i = Convert.ToInt32(startFrameObj); i <= Convert.ToInt32(endFrameObj); i++)
{
// check if frame number already exists and if it does, skip it
if (vfl.FrameList.Any(x => x.FrameNumber == i))
{
continue;
}
VideoFrame vf = new VideoFrame();
vf.FrameNumber = i;
vf.FrameStartTime = currentStartTime;
if (useDuration)
{
vf.FrameDuration = durationAmount;
}
else
{
vf.FrameRate = durationAmount;
}
//Update start time for next frame
currentStartTime += vf.FrameDuration;
//Add the frame to the list
vfl.Add(vf);
}
}
/// <summary>
/// Function to parse timecodes file
/// </summary>
/// <param name="timecodeFile">the path for the timecode file to parse</param>
/// <param name="vfl">the video frame list to write to</param>
/// <param name="writeDump">flag whether to write dump file</param>
public void ParseTimecodes(String timecodeFile, VideoFrameList vfl, Boolean writeDump)
{
String curLine = "";
String prevLine = "";
bool isV1 = false;
bool isV2 = false;
Decimal assumedFps = 0.0m;
//Open timecodes file
using (StreamReader reader = new StreamReader(timecodeFile, Encoding.UTF8))
{
try
{
//Start timing
//Stopwatch timer = new Stopwatch();
//timer.Start();
//AcLogger.Log("Starting Parsing Timecodes file : " + timecodeFile, AcLogger.AcLogType.Form);
//Read timecodes file
while ((curLine = reader.ReadLine()) != null)
{
//Check for comment lines
if (curLine.StartsWith("#"))
{
if (curLine.ToLower().Contains("v1"))
{
//AcLogger.Log("Version 1 Timecodes File Detected", AcLogger.AcLogType.Form);
isV1 = true;
timecodesFileVersion = 1;
}
if (curLine.ToLower().Contains("v2"))
{
//AcLogger.Log("Version 2 Timecodes File Detected", AcLogger.AcLogType.Form);
isV2 = true;
timecodesFileVersion = 2;
}
}
//Check for assume line
else if (curLine.ToLower().Contains("assume"))
{
curLine = curLine.ToLower().Replace("assume", "").Replace(" ", "");
assumedFps = AcHelper.DecimalParse(curLine);
assumedFrameRate = assumedFps;
//AcLogger.Log("Assumed FPS : " + assumedFps, AcLogger.AcLogType.Form);
}
else
{
//Check for empty line
if (String.IsNullOrWhiteSpace(curLine))
{
//Do nothing
continue;
}
if (isV1)
{
AnalyseV1(curLine, vfl);
}
if (isV2)
{
//First Frame
if (String.IsNullOrWhiteSpace(prevLine))
{
prevLine = reader.ReadLine();
vfl.Add(AnalyseV2(curLine, prevLine, 0));
}
//Other Frames
else
{
vfl.Add(AnalyseV2(prevLine, curLine, vfl.Count));
prevLine = curLine;
}
}
}
}
//Calculate last frame's FrameInfo data if v2 timecodes
if (isV2)
{
vfl.Add(new VideoFrame()
{
FrameNumber = vfl.Count,
FrameStartTime = AcHelper.DecimalParse(prevLine),
FrameDuration = vfl.FrameList[vfl.Count - 1].FrameDuration
});
}
//timer.Stop();
}
catch (Exception ex)
{
throw (new AcException("Error in reading timecodes file!", ex));
}
}
//AcLogger.Log("Parsing Timecodes finished!", AcLogger.AcLogType.Form);
//AcLogger.Log("Parsing took : " + timer.Elapsed, AcLogger.AcLogType.Form);
//AcLogger.Log("Total Frames : " + vfl.Count, AcLogger.AcLogType.Form);
//Check timecode dump
if (writeDump)
{
try
{
//Write Timecode Dump
StringBuilder dumpBuilder = new StringBuilder();
using (StreamWriter writer = new StreamWriter(timecodeFile + ".dmp", false, Encoding.UTF8))
{
for (int i = 0; i < vfl.Count; i++)
{
dumpBuilder.AppendFormat("Frame_Number:{0} Frame_Fps:{1} Frame_Duration:{2}\r\n",
vfl.FrameList[i].FrameNumber, vfl.FrameList[i].FrameRate, vfl.FrameList[i].FrameDuration);
}
writer.Write(dumpBuilder.ToString());
}
}
catch (Exception ex)
{
throw (new AcException("Error writing timecode dump!", ex));
}
}
}
/// <summary>
/// Function to parse duplicates file
/// </summary>
/// <param name="dupFile">
/// String with the path of the duplicates file
/// </param>
public static void ParseDup(String dupFile, VideoFrameList vfl)
{
using (StreamReader sr = new StreamReader(dupFile, Encoding.UTF8))
{
//Start timing
//Stopwatch timer = new Stopwatch();
//timer.Start();
//AcLogger.Log("Starting Parsing Duplicates file : " + dupFile, AcLogger.AcLogType.Form);
//Check if FrameList exists
bool createList = (vfl.Count == 0);
//Read file
String line = "";
Int32 frameNum = 0;
while ((line = sr.ReadLine()) != null)
{
//Check for first line
if (line.ToLowerInvariant().StartsWith("dedup"))
{
//Do nothing and advance to the next line
continue;
}
//Check for frame difference line
else if (line.ToLowerInvariant().StartsWith("frm"))
{
//Get frame difference
String frameDiff = "";
int start = line.IndexOf("=");
int len = line.IndexOf("%") - start;
frameDiff = line.Substring(start + 1, len).Trim();
frameDiff = frameDiff.Substring(0, frameDiff.Length - 1);
//Check if new frame list
if (createList)
{
//Create new Video frame object
VideoFrame tmpFrm = new VideoFrame();
tmpFrm.FrameNumber = frameNum;
tmpFrm.FrameDifferenceFromPrevious = AcHelper.DecimalParse(frameDiff);
//Add it to list
vfl.Add(tmpFrm);
}
else
{
//Check if frame numbers don't match with the existing list
if (frameNum > vfl.Count - 1)
{
//Invalid dup file
throw (new AcException("Invalid Dup File! Frames are inconsistent with existing data!"));
}
else
{
//Set the difference
vfl.FrameList[frameNum].FrameDifferenceFromPrevious = AcHelper.DecimalParse(frameDiff);
}
}
//Advance frame number counter
frameNum++;
}
}
//timer.Stop();
//AcLogger.Log("Parsing Timecodes finished!", AcLogger.AcLogType.Form);
//AcLogger.Log("Total frames : " + frameNum, AcLogger.AcLogType.Form);
//AcLogger.Log("Parsing took : " + timer.Elapsed, AcLogger.AcLogType.Form);
}
}
