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using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.FFMpeg;
using MediaBrowser.Model.Entities;
using System;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.Linq;
namespace MediaBrowser.Controller.Providers
{
[Export(typeof(BaseMetadataProvider))]
public class VideoInfoProvider : BaseMediaInfoProvider<Video>
{
public override MetadataProviderPriority Priority
{
// Give this second priority
// Give metadata xml providers a chance to fill in data first, so that we can skip this whenever possible
get { return MetadataProviderPriority.Second; }
}
protected override string CacheDirectory
{
get { return Kernel.Instance.ApplicationPaths.FFProbeVideoCacheDirectory; }
}
protected override void Fetch(Video video, FFProbeResult data)
{
if (data.format != null)
{
if (!string.IsNullOrEmpty(data.format.duration))
{
video.RunTimeTicks = TimeSpan.FromSeconds(double.Parse(data.format.duration)).Ticks;
}
if (!string.IsNullOrEmpty(data.format.bit_rate))
{
video.BitRate = int.Parse(data.format.bit_rate);
}
}
if (data.streams != null)
{
// For now, only read info about first video stream
// Files with multiple video streams are possible, but extremely rare
bool foundVideo = false;
foreach (MediaStream stream in data.streams)
{
if (stream.codec_type.Equals("video", StringComparison.OrdinalIgnoreCase))
{
if (!foundVideo)
{
FetchFromVideoStream(video, stream);
}
foundVideo = true;
}
else if (stream.codec_type.Equals("audio", StringComparison.OrdinalIgnoreCase))
{
FetchFromAudioStream(video, stream);
}
}
}
}
private void FetchFromVideoStream(Video video, MediaStream stream)
{
video.Codec = stream.codec_name;
video.Width = stream.width;
video.Height = stream.height;
video.AspectRatio = stream.display_aspect_ratio;
if (!string.IsNullOrEmpty(stream.avg_frame_rate))
{
string[] parts = stream.avg_frame_rate.Split('/');
if (parts.Length == 2)
{
video.FrameRate = float.Parse(parts[0]) / float.Parse(parts[1]);
}
else
{
video.FrameRate = float.Parse(parts[0]);
}
}
}
private void FetchFromAudioStream(Video video, MediaStream stream)
{
var audio = new AudioStream{};
audio.Codec = stream.codec_name;
if (!string.IsNullOrEmpty(stream.bit_rate))
{
audio.BitRate = int.Parse(stream.bit_rate);
}
audio.Channels = stream.channels;
if (!string.IsNullOrEmpty(stream.sample_rate))
{
audio.SampleRate = int.Parse(stream.sample_rate);
}
audio.Language = GetDictionaryValue(stream.tags, "language");
List<AudioStream> streams = video.AudioStreams ?? new List<AudioStream>();
streams.Add(audio);
video.AudioStreams = streams;
}
private void FetchFromSubtitleStream(Video video, MediaStream stream)
{
var subtitle = new SubtitleStream{};
subtitle.Language = GetDictionaryValue(stream.tags, "language");
List<SubtitleStream> streams = video.Subtitles ?? new List<SubtitleStream>();
streams.Add(subtitle);
video.Subtitles = streams;
}
/// <summary>
/// Determines if there's already enough info in the Video object to allow us to skip running ffprobe
/// </summary>
protected override bool CanSkipFFProbe(Video video)
{
if (video.VideoType != VideoType.VideoFile)
{
// Not supported yet
return true;
}
if (video.AudioStreams == null || !video.AudioStreams.Any())
{
return false;
}
if (string.IsNullOrEmpty(video.AspectRatio))
{
return false;
}
if (string.IsNullOrEmpty(video.Codec))
{
return false;
}
if (string.IsNullOrEmpty(video.ScanType))
{
return false;
}
if (!video.RunTimeTicks.HasValue || video.RunTimeTicks.Value == 0)
{
return false;
}
if (Convert.ToInt32(video.FrameRate) == 0 || video.Height == 0 || video.Width == 0 || video.BitRate == 0)
{
return false;
}
return true;
}
}
}
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