//====== IRequestHandler
public async Task <FileMetadataContainer> Handle(GetMetadataFromFileContentQuery request, CancellationToken cancellationToken)
{
FileEntity?entity = await context.Entities.Files.FindAsync(request.FileId.Value);
if (entity is null)
{
throw new Exception("File not found: " + request.FileId); // TODO: custom ex
}
IFileInfo fileInfo = fileReader.SourceFilesReader.Get(new FileName(entity.SourceFileName));
if (fileInfo.Exists == false)
{
throw new Exception("File not found: " + request.FileId); // TODO: custom ex
}
using var stream = fileInfo.CreateReadStream();
FileMetadataContainer container = metadataReader.GetMetadata(stream);
return(container);
}
public static MediaFile GetMediaFile(string filePath)
{
int duration, fps = 0, height = 0, width = 0;
bool hasVideo, hasAudio;
string audioCodec = "", videoCodec = "";
MultimediaFactory factory;
IMetadataReader reader = null;
try{
factory = new MultimediaFactory();
reader = factory.getMetadataReader();
reader.Open(filePath);
duration = (int)reader.GetMetadata(MetadataType.Duration);
hasVideo = (bool)reader.GetMetadata(MetadataType.HasVideo);
hasAudio = (bool)reader.GetMetadata(MetadataType.HasAudio);
if (hasAudio)
{
audioCodec = (string)reader.GetMetadata(MetadataType.AudioEncoderType);
}
if (hasVideo)
{
videoCodec = (string)reader.GetMetadata(MetadataType.VideoEncoderType);
fps = (int)reader.GetMetadata(MetadataType.Fps);
}
height = (int)reader.GetMetadata(MetadataType.DimensionX);
width = (int)reader.GetMetadata(MetadataType.DimensionY);
return(new MediaFile(filePath, duration * 1000, (ushort)fps,
hasAudio, hasVideo, videoCodec, audioCodec,
(uint)height, (uint)width));
}
catch (GLib.GException ex) {
throw new Exception(Catalog.GetString("Invalid video file:") + "\n" + ex.Message);
}
finally {
reader.Close();
reader.Dispose();
}
}