michael.heier/jellyfin
1
0
Fork 0
Code Issues Pull Requests Actions 2 Packages Projects Releases Wiki Activity

Added some intelligence to the video handler. try to just copy the audio stream when possible, instead of encoding.

Browse Source
This commit is contained in:
LukePulverenti Luke Pulverenti luke pulverenti 2012-08-13 16:18:02 -04:00
parent 0a310fab0e
commit 5f5f2fcdb4
3 changed files with 90 additions and 69 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
MediaBrowser.Api/HttpHandlers/AudioHandler.cs
View File

@ -113,14 +113,14 @@ namespace MediaBrowser.Api.HttpHandlers
audioTranscodeParams.Add("-ab " + bitrate.Value);
}
int? channels = GetNumAudioChannelsParam();
int? channels = GetNumAudioChannelsParam(LibraryItem.Channels);
if (channels.HasValue)
{
audioTranscodeParams.Add("-ac " + channels.Value);
}
int? sampleRate = GetSampleRateParam();
int? sampleRate = GetSampleRateParam(LibraryItem.SampleRate);
if (sampleRate.HasValue)
{
@ -131,41 +131,5 @@ namespace MediaBrowser.Api.HttpHandlers
return "-i \"" + LibraryItem.Path + "\" -vn " + string.Join(" ", audioTranscodeParams.ToArray()) + " -";
}
/// <summary>
/// Gets the number of audio channels to specify on the command line
/// </summary>
private int? GetNumAudioChannelsParam()
{
// If the user requested a max number of channels
if (AudioChannels.HasValue)
{
// Only specify the param if we're going to downmix
if (AudioChannels.Value < LibraryItem.Channels)
{
return AudioChannels.Value;
}
}
return null;
}
/// <summary>
/// Gets the number of audio channels to specify on the command line
/// </summary>
private int? GetSampleRateParam()
{
// If the user requested a max value
if (AudioSampleRate.HasValue)
{
// Only specify the param if we're going to downmix
if (AudioSampleRate.Value < LibraryItem.SampleRate)
{
return AudioSampleRate.Value;
}
}
return null;
}
}
}

36
MediaBrowser.Api/HttpHandlers/BaseMediaHandler.cs
View File

@ -212,5 +212,41 @@ namespace MediaBrowser.Api.HttpHandlers
process.Dispose();
}
}
/// <summary>
/// Gets the number of audio channels to specify on the command line
/// </summary>
protected int? GetNumAudioChannelsParam(int libraryItemChannels)
{
// If the user requested a max number of channels
if (AudioChannels.HasValue)
{
// Only specify the param if we're going to downmix
if (AudioChannels.Value < libraryItemChannels)
{
return AudioChannels.Value;
}
}
return null;
}
/// <summary>
/// Gets the number of audio channels to specify on the command line
/// </summary>
protected int? GetSampleRateParam(int libraryItemSampleRate)
{
// If the user requested a max value
if (AudioSampleRate.HasValue)
{
// Only specify the param if we're going to downmix
if (AudioSampleRate.Value < libraryItemSampleRate)
{
return AudioSampleRate.Value;
}
}
return null;
}
}
}

79
MediaBrowser.Api/HttpHandlers/VideoHandler.cs
View File

@ -1,8 +1,8 @@
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using MediaBrowser.Model.Entities;
using System.IO;
namespace MediaBrowser.Api.HttpHandlers
{
@ -102,21 +102,31 @@ namespace MediaBrowser.Api.HttpHandlers
private string GetAudioArguments(string outputFormat)
{
string codec = GetAudioCodec(outputFormat);
AudioStream audioStream = LibraryItem.AudioStreams.FirstOrDefault();
if (audioStream == null)
{
return string.Empty;
}
string codec = GetAudioCodec(audioStream, outputFormat);
string args = "-acodec " + codec;
if (!codec.Equals("copy", StringComparison.OrdinalIgnoreCase))
{
int? channels = GetNumAudioChannels(codec);
int? channels = GetNumAudioChannelsParam(codec, audioStream.Channels);
if (channels.HasValue)
{
args += " -ac " + channels.Value;
}
if (AudioSampleRate.HasValue)
int? sampleRate = GetSampleRateParam(audioStream.SampleRate);
if (sampleRate.HasValue)
{
args += " -ar " + AudioSampleRate.Value;
args += " -ar " + sampleRate.Value;
}
}
@ -131,54 +141,65 @@ namespace MediaBrowser.Api.HttpHandlers
// Per webm specification, it must be vpx
return "libvpx";
}
else if (outputFormat.Equals("flv"))
{
return "libx264";
}
else if (outputFormat.Equals("ts"))
{
return "libx264";
}
else if (outputFormat.Equals("asf"))
{
return "wmv2";
}
return "copy";
return "libx264";
}
private string GetAudioCodec(string outputFormat)
private string GetAudioCodec(AudioStream audioStream, string outputFormat)
{
if (outputFormat.Equals("webm"))
{
// Per webm specification, it must be vorbis
return "libvorbis";
}
else if (outputFormat.Equals("flv"))
// See if we can just copy the stream
if (HasBasicAudio(audioStream))
{
return "libvo_aacenc";
}
else if (outputFormat.Equals("ts"))
{
return "libvo_aacenc";
}
else if (outputFormat.Equals("asf"))
{
return "libvo_aacenc";
return "copy";
}
return "copy";
return "libvo_aacenc";
}
private int? GetNumAudioChannels(string audioCodec)
private int? GetNumAudioChannelsParam(string audioCodec, int libraryItemChannels)
{
if (audioCodec.Equals("libvo_aacenc"))
if (libraryItemChannels > 2 && audioCodec.Equals("libvo_aacenc"))
{
// libvo_aacenc currently only supports two channel output
return 2;
}
return AudioChannels;
return GetNumAudioChannelsParam(libraryItemChannels);
}
private bool HasBasicAudio(AudioStream audio)
{
int maxChannels = AudioChannels ?? 2;
if (audio.Channels > maxChannels)
{
return false;
}
if (audio.AudioFormat.IndexOf("aac", StringComparison.OrdinalIgnoreCase) != -1)
{
return true;
}
if (audio.AudioFormat.IndexOf("ac-3", StringComparison.OrdinalIgnoreCase) != -1 || audio.AudioFormat.IndexOf("ac3", StringComparison.OrdinalIgnoreCase) != -1)
{
return true;
}
if (audio.AudioFormat.IndexOf("mpeg", StringComparison.OrdinalIgnoreCase) != -1 || audio.AudioFormat.IndexOf("mp3", StringComparison.OrdinalIgnoreCase) != -1)
{
return true;
}
return false;
}
}
}