// convert directory of png images to video
// overloaded for use with progress bar
public static void png_to_mp4(string pngTempDir, string outFile, ProgressWindow progform, string fps = "4")
{
var ffMpeg = new NReco.VideoConverter.FFMpegConverter();
var outS = new NReco.VideoConverter.ConvertSettings();
outS.CustomInputArgs = "-framerate " + fps;
outS.CustomInputArgs = "-y " + outS.CustomInputArgs;
outS.VideoFrameSize = sys.convsettings["size"];
//outS.VideoFrameRate = 10;
/* Got NReco to work a few notes:
* 1) %05d is the bash syntax for a number that's padded with 0's for 5 digits. i.e. 00349
* 2) ffmpeg only looks for stills with the file number of 0~4. ie. imagename000.png. If it doesn't find it, it gives "file not found" error.
* 3) NReco can be found in the folder.
* conv.convert(); in program to call.
*/
ffMpeg.ConvertProgress += (o, args) => progHandler(o, args, progform);
// actual conversion command
ffMpeg.ConvertMedia(pngTempDir + @"%04d.png", "image2", outFile + @"." + sys.convsettings["format"], sys.convsettings["format"], outS);
progform.setProgress(100);
progform.Update();
}
private void buttonConvert_Click(object sender, EventArgs e)
{
// make sure they selected a file for conversion
if (selectListDicom.SelectedItem == null)
{
popup.msg("Select a file to be converted.");
return;
}
if (selectListDicom.CheckedItems == null || selectListDicom.CheckedItems.Count <= 0)
{
popup.msg("No dicom files selected.");
return;
}
string presetfile = sys.presetPath + dropdownProfiles.SelectedValue;
IDictionary <string, string> presetsettings = sys.getPresets(presetfile + ".txt");
buttonConvert.Text = "Converting";
buttonConvert.Enabled = false;
Console.WriteLine(presetsettings.ToString());
ProgressWindow form2 = new ProgressWindow(selectListDicom.CheckedItems);
this.Enabled = false;
foreach (object item in selectListDicom.CheckedItems)
{
string toPass = item.ToString();
form2.textbox(toPass.Substring(toPass.LastIndexOf('|') + 1)); //filename
form2.progressbar(0);
form2.Show();
Application.DoEvents();
dcm temp = new dcm(sys.dicomsPath + toPass.Substring(toPass.LastIndexOf('|') + 1));
gui.convert(toPass.Substring(toPass.LastIndexOf('|') + 1), form2, temp.frameRate);
}
form2.setProgress(100);
form2.textbox("Done");
form2.progtext("Done");
form2.Update();
Application.DoEvents();
Thread.Sleep(2000);
form2.Close();
this.Enabled = true;
this.Focus();
buttonConvert.Text = "Convert";
buttonConvert.Enabled = true;
initMovList(); //update mov list
}
// progress bar handler to update percentages
static void progHandler(object o, ConvertProgressEventArgs args, ProgressWindow progform)
{
int prog = (int)(100 * (args.Processed.TotalSeconds / args.TotalDuration.TotalSeconds));
progform.BeginInvoke(new Action(() => {
//you might think this is a bug. No, this is intentional. Due to the way MS implemented events and progressbar class
//if the events and/or update goes too fast, the bar not draw the updates. Even after you've slept the process.
// so this is set as is to make sure that the process *ends* with 100 for the end user. If you want to be a purist
//prog is set to the proper percentage.
// *note* --- args.Processed= 00:00:22.7500000/22.75, args.TotalDuration= 00:00:22.7500000/22.75, ((processed*100)/totalduration)=103 ---
//--- args.Processed= 00:00:22.7500000/22.75, args.TotalDuration= 00:00:22.7500000/22.75, 100 *(processed/totalduration)=100 ---
//because microsoft.
progform.setProgress(100);
progform.Update();
}));
Console.WriteLine(String.Format("--- args.Processed= " + args.Processed + "/" + args.Processed.TotalSeconds + ", args.TotalDuration= " + args.TotalDuration + "/" + args.TotalDuration.TotalSeconds.ToString() + ", ((processed*100)/totalduraction)=" + prog + " ---"));
}
// extract all frames from a .dcm file
// overloaded for use with progress bar
public static void dcm_to_png(string dcmFile, string pngTempDir, ProgressWindow progform)
{
var image = new DicomImage(dcmFile);
int frames = image.NumberOfFrames;
// number format, making sure its prefixed with appropriate number of zeros
// currently guarantees a four digit number
// (dont think ive see dicom files with thousands of frames?)
string fmt = "0000";
for (int i = 0; i < frames; i++)
{
// render each frame as png
image.RenderImage(i).Save(pngTempDir + i.ToString(fmt) + ".png");
int iout = (((i + 1) * 100) / frames);
progform.setProgress(iout);
}
}
