internal Metadata(MetadataExtractor extractor)
{
Debug.Assert(extractor != null);
Video = VideoMetadata.From(extractor);
Audio = AudioMetadata.From(extractor);
Duration = ValueConverter.ToNullableInt(extractor.GetMetadata(MetadataExtractorAttr.Duration));
Artist = extractor.GetMetadata(MetadataExtractorAttr.Artist);
Title = extractor.GetMetadata(MetadataExtractorAttr.Title);
Album = extractor.GetMetadata(MetadataExtractorAttr.Album);
AlbumArtist = extractor.GetMetadata(MetadataExtractorAttr.AlbumArtist);
Genre = extractor.GetMetadata(MetadataExtractorAttr.Genre);
Author = extractor.GetMetadata(MetadataExtractorAttr.Composer);
Composer = extractor.GetMetadata(MetadataExtractorAttr.Composer);
Copyright = extractor.GetMetadata(MetadataExtractorAttr.Copyright);
DateReleased = extractor.GetMetadata(MetadataExtractorAttr.ReleaseDate);
Description = extractor.GetMetadata(MetadataExtractorAttr.Description);
Comment = extractor.GetMetadata(MetadataExtractorAttr.Comment);
TrackNumber = extractor.GetMetadata(MetadataExtractorAttr.TrackNum);
Classification = extractor.GetMetadata(MetadataExtractorAttr.Classification);
Rating = extractor.GetMetadata(MetadataExtractorAttr.Rating);
Longitude = ValueConverter.ToNullableDouble(extractor.GetMetadata(MetadataExtractorAttr.Longitude));
Latitude = ValueConverter.ToNullableDouble(extractor.GetMetadata(MetadataExtractorAttr.Latitude));
Altitude = ValueConverter.ToNullableDouble(extractor.GetMetadata(MetadataExtractorAttr.Altitude));
Conductor = extractor.GetMetadata(MetadataExtractorAttr.Conductor);
UnsyncLyrics = extractor.GetMetadata(MetadataExtractorAttr.UnSyncLyrics);
SyncLyricsCount = ValueConverter.ToInt(extractor.GetMetadata(MetadataExtractorAttr.SyncLyricsNum));
DateRecorded = extractor.GetMetadata(MetadataExtractorAttr.RecordingDate);
Rotation = extractor.GetMetadata(MetadataExtractorAttr.Rotate);
Content360 = extractor.GetMetadata(MetadataExtractorAttr.ContentFor360);
_description = new Lazy <string>(() => ObjectDescriptionBuilder.BuildWithProperties(this));
}
private VideoMetadata(int streamCount, MetadataExtractor extractor)
{
Debug.Assert(streamCount > 0);
StreamCount = streamCount;
BitRate = ValueConverter.ToNullableInt(extractor.GetMetadata(MetadataExtractorAttr.VideoBitrate));
Fps = ValueConverter.ToNullableInt(extractor.GetMetadata(MetadataExtractorAttr.VideoFps));
Width = ValueConverter.ToNullableInt(extractor.GetMetadata(MetadataExtractorAttr.VideoWidth));
Height = ValueConverter.ToNullableInt(extractor.GetMetadata(MetadataExtractorAttr.VideoHeight));
Codec = extractor.GetMetadata(MetadataExtractorAttr.VideoCodec);
_description = new Lazy <string>(() => ObjectDescriptionBuilder.BuildWithProperties(this));
}
private AudioMetadata(int streamCount, MetadataExtractor extractor)
{
Debug.Assert(streamCount > 0);
StreamCount = streamCount;
BitRate = ValueConverter.ToNullableInt(extractor.GetMetadata(MetadataExtractorAttr.AudioBitrate));
Channels = ValueConverter.ToNullableInt(extractor.GetMetadata(MetadataExtractorAttr.AudioChannels));
SampleRate = ValueConverter.ToNullableInt(extractor.GetMetadata(MetadataExtractorAttr.AudioSamplerate));
BitPerSample = ValueConverter.ToNullableInt(extractor.GetMetadata(MetadataExtractorAttr.AudioBitPerSample));
Codec = extractor.GetMetadata(MetadataExtractorAttr.AudioCodec);
_description = new Lazy <string>(() => ObjectDescriptionBuilder.BuildWithProperties(this));
}
internal static string GetMetadata(this MetadataExtractor extractor, MetadataExtractorAttr attr)
{
Debug.Assert(extractor != null);
IntPtr valuePtr = IntPtr.Zero;
try
{
var ret = Native.GetMetadata(extractor.Handle, attr, out valuePtr);
MetadataExtractorRetValidator.ThrowIfError(ret, "Failed to get value for " + attr);
return(Marshal.PtrToStringAnsi(valuePtr));
}
finally
{
Libc.Free(valuePtr);
}
}
internal static VideoMetadata From(MetadataExtractor extractor)
{
var streamCount = ValueConverter.ToInt(extractor.GetMetadata(MetadataExtractorAttr.VideoStreamCount));
return(streamCount > 0 ? new VideoMetadata(streamCount, extractor) : null);
}