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using System;
using System.Collections.Generic;
using System.Linq;
using MediaBrowser.Model.Entities;
namespace MediaBrowser.Api.HttpHandlers
{
class VideoHandler : BaseMediaHandler<Video>
{
private IEnumerable<string> UnsupportedOutputFormats = new string[] { "mp4" };
public IEnumerable<string> VideoFormats
{
get
{
return QueryString["videoformats"].Split(',');
}
}
/// <summary>
/// Gets the format we'll be converting to
/// </summary>
protected override string GetOutputFormat()
{
return VideoFormats.First(f => !UnsupportedOutputFormats.Any(s => s.Equals(f, StringComparison.OrdinalIgnoreCase)));
}
protected override bool RequiresConversion()
{
// If it's not in a format we can output to, return true
if (UnsupportedOutputFormats.Any(f => LibraryItem.Path.EndsWith(f, StringComparison.OrdinalIgnoreCase)))
{
return true;
}
// If it's not in a format the consumer accepts, return true
if (!VideoFormats.Any(f => LibraryItem.Path.EndsWith(f, StringComparison.OrdinalIgnoreCase)))
{
return true;
}
AudioStream audio = LibraryItem.AudioStreams.FirstOrDefault();
if (audio != null)
{
// If the number of channels is greater than our desired channels, we need to transcode
if (AudioChannels.HasValue && AudioChannels.Value < audio.Channels)
{
return true;
}
}
// Yay
return false;
}
private string GetFFMpegOutputFormat(string outputFormat)
{
if (outputFormat.Equals("mkv", StringComparison.OrdinalIgnoreCase))
{
return "matroska";
}
return outputFormat;
}
private int GetOutputAudioStreamIndex(string outputFormat)
{
return 0;
}
/// <summary>
/// Creates arguments to pass to ffmpeg
/// </summary>
protected override string GetCommandLineArguments()
{
List<string> audioTranscodeParams = new List<string>();
string outputFormat = GetOutputFormat();
int audioStreamIndex = GetOutputAudioStreamIndex(outputFormat);
List<string> maps = new List<string>();
// Add the video stream
maps.Add("-map 0:0");
// Add the audio stream
if (audioStreamIndex != -1)
{
maps.Add("-map 0:" + (1 + audioStreamIndex));
}
// Add all the subtitle streams
for (int i = 0; i < LibraryItem.Subtitles.Count(); i++)
{
maps.Add("-map 0:" + (1 + LibraryItem.AudioStreams.Count() + i));
}
return string.Format("-i \"{0}\" {1} {2} {3} -f {4} -",
LibraryItem.Path,
string.Join(" ", maps.ToArray()),
GetVideoArguments(),
GetAudioArguments(),
GetFFMpegOutputFormat(outputFormat)
);
}
private string GetVideoArguments()
{
return "-c:v copy";
}
private string GetAudioArguments()
{
return "-c:a copy";
}
private string GetSubtitleArguments()
{
string args = "";
for (int i = 0; i < LibraryItem.Subtitles.Count(); i++)
{
if (i > 0)
{
args += " ";
}
args += "-c:s copy";
}
return args;
}
}
}
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