private void CheckForVideo(Slide slide, String currentSlideRelID, SlidePart slidePart, PresentationDocument document)
{
var videos = slide.Descendants <VideoFromFile>();
foreach (VideoFromFile video in videos)
{
String path = slidePart.GetReferenceRelationship(video.Link).Uri.OriginalString;
String fileExtension = System.IO.Path.GetExtension(path);
String description = $"Found video on slide {SlideModel.rIdtoSlideIndex(currentSlideRelID)}, file extension is {fileExtension}";
Boolean fixable;
String filename = System.IO.Path.GetFileName(path);
if (fileExtension == ".mp4")
{
fixable = false;
}
else
{
fixable = true;
}
IIssue issue = new VideoIssueItem(filename, video, description, fixable);
powerpoint.slides[currentSlideRelID].addToIssueList(issue);
}
}
/// <summary>
/// Consider two output types:
/// .txt if pptx doesn't contain videos
/// .zip if it contains videos (a .txt file + the video files)
/// </summary>
/// <param name="source"></param>
/// <returns></returns>
public async Task <Dictionary <int, string> > ProcessVideoParts(string source, MSOfficeJob job, string tempDirectory)
{
Dictionary <int, string> TextContent = new Dictionary <int, string>();
int index = 1;
using (PresentationDocument ppt = PresentationDocument.Open(source, false))
{
// Get the relationship ID of the first slide.
PresentationPart part = ppt.PresentationPart;
OpenXmlElementList slideIds = part.Presentation.SlideIdList.ChildElements;
foreach (SlideId slideID in slideIds)
{
//get the right content according to type. for now only text is getting through
string relId = slideID.RelationshipId;
// Get the slide part from the relationship ID.
SlidePart slide = (SlidePart)part.GetPartById(relId);
//extract the videos and put placeholders
IEnumerable <A.VideoFromFile> videos = slide.Slide.Descendants <A.VideoFromFile>();
foreach (A.VideoFromFile vid in videos)
{
string videoRelId = vid.Link;
ReferenceRelationship rel = slide.GetReferenceRelationship(videoRelId);
Uri uri = rel.Uri;
var filename = uri.ToString().Split('/').Last();
var s = ppt.Package.GetPart(uri).GetStream();
byte[] videoBytes = null;
using (BinaryReader br = new BinaryReader(s))
{
videoBytes = br.ReadBytes((int)s.Length);
}
//write video to result directory
File.WriteAllBytes(Path.Combine(tempDirectory, filename), videoBytes);
//send to amara
string langauge = "en-us";
if (ppt.PackageProperties.Language != null)
{
langauge = ppt.PackageProperties.Language;
}
AmaraSubtitleJob vj = new AmaraSubtitleJob()
{
SubmitTime = DateTime.Now,
FinishTime = DateTime.Now,
Status = JobStatus.Started,
MimeType = "video/" + filename.Substring(filename.LastIndexOf('.') + 1), //define this properly
User = job.User,
UserId = job.UserId,
DownloadCounter = 0,
FileContent = videoBytes,
InputFileHash = RoboBrailleProcessor.GetMD5Hash(videoBytes),
SubtitleFormat = job.SubtitleFormat,
SubtitleLangauge = job.SubtitleLangauge,
FileName = job.Id.ToString() + "-" + filename.Substring(0, filename.LastIndexOf('.')),
FileExtension = filename.Substring(filename.LastIndexOf('.') + 1)
};
//retrieve the message from amara
byte[] filebytes = null;
Guid subtitleJobId = vcr.SubmitWorkItem(vj).Result;
while (vcr.GetWorkStatus(subtitleJobId) == 2)
{
await Task.Delay(2000);
}
filebytes = vcr.GetResultContents(subtitleJobId).getFileContents();
File.WriteAllBytes(Path.Combine(tempDirectory, filename.Substring(0, filename.LastIndexOf('.')) + vj.ResultFileExtension), filebytes);
slide.Slide.CommonSlideData.ShapeTree.AppendChild(
new ShapeProperties(
new TextBody(
new A.Paragraph(
new A.Run(
new A.Text("Video file name = " + filename + " subtitle attached to video has id: " + vj.Id.ToString())
)))));
}
// Build a StringBuilder object.
StringBuilder paragraphText = new StringBuilder();
// Get the inner text of the slide:
IEnumerable <A.Text> texts = slide.Slide.Descendants <A.Text>();
foreach (A.Text text in texts)
{
if (text.Text.Length > 1)
{
paragraphText.Append(text.Text + " ");
}
else
{
paragraphText.Append(text.Text);
}
}
string slideText = paragraphText.ToString();
TextContent.Add(index, slideText);
index++;
}
//until now there are: video files + subtitle files
//at the end there will be: a txt file + video files + subtitle files (all zipped up)
}
return(TextContent);
}
