public static void NormalizeAudio(String filename, StreamInfo audioStreamInfo) {
if(!filename.EndsWith("ogg")) throw new Exception("Only .ogg files are currently supported for normalizing!");
double maxVolume = GetMaxVolume(filename, audioStreamInfo);
double targetVolume = InstanceSettings.systemSettings.normalizeTargetVolume;
String tmpFilename = InstanceSettings.temporaryFilesPath + Path.GetFileName(filename);
String arguments = String.Format("-y -i \"{0}\" -af \"volume={1}dB\" -c:a libvorbis -vn \"{2}\"", filename, (-maxVolume + targetVolume).ToString(System.Globalization.CultureInfo.InvariantCulture), tmpFilename);
UtilsCommon.StartProcessAndGetOutput(InstanceSettings.systemSettings.formatConvertCommand, arguments);
// move new file to original position
if(File.Exists(tmpFilename)) {
File.Delete(filename);
File.Move(tmpFilename, filename);
}
}
public static double GetMaxVolume(String audioFile, StreamInfo audioStreamInfo) {
if(audioStreamInfo.StreamTypeValue != StreamInfo.StreamType.ST_AUDIO)
throw new Exception("Tried to get volume of non-audio-stream");
String arguments = String.Format("-i \"{0}\" -map 0:{1} -af volumedetect -vn -f null /dev/null",
audioFile,
audioStreamInfo.StreamIndex);
String stderr = UtilsCommon.StartProcessAndGetOutput(InstanceSettings.systemSettings.formatConvertCommand, arguments, true);
String[] lines = stderr.Split('\n');
for(int i = lines.Length - 1; i >= 0; i--) {
String line = lines[i];
if(line.Contains("max_volume")) {
Match match = Regex.Match(line.Trim(), @"\[Parsed_volumedetect_0 @ (.*?)\] max_volume: (?<volume>[-.,0-9]+) dB$", RegexOptions.IgnoreCase | RegexOptions.Compiled);
if(!match.Success) throw new Exception("Output of \"" + InstanceSettings.systemSettings.formatConvertCommand + "\" with filter \"volumedetect\" could not be parsed");
return Double.Parse(match.Groups["volume"].ToString(), CultureInfo.InvariantCulture);
}
}
throw new Exception("Output of \"" + InstanceSettings.systemSettings.formatConvertCommand + "\" with filter \"volumedetect\" could not be parsed");
}
public EpisodeInfo (int index,
int number,
UtilsInputFiles.FileDesc videoFileDesc,
UtilsInputFiles.FileDesc audioFileDesc,
UtilsInputFiles.FileDesc sub1FileDesc,
UtilsInputFiles.FileDesc sub2FileDesc,
StreamInfo videoStreamInfo,
StreamInfo audioStreamInfo,
StreamInfo sub1StreamInfo,
StreamInfo sub2StreamInfo)
{
m_index = index;
m_number = number;
m_videoFileDesc = videoFileDesc;
m_audioFileDesc = audioFileDesc;
m_subsFileDesc[0] = sub1FileDesc;
m_subsFileDesc[1] = sub2FileDesc;
m_videoStreamInfo = videoStreamInfo;
m_audioStreamInfo = audioStreamInfo;
m_subStreamInfos[0] = sub1StreamInfo;
m_subStreamInfos[1] = sub2StreamInfo;
}
/// <summary>
/// Uses ffprobe/avprobe to query all audio, video and subtitle streams in a container file.
/// </summary>
public static List<StreamInfo> ReadAllStreams(String filename) {
// use ffprobe/avprobe(?) to get nice XML-description of contents
String stdout = UtilsCommon.StartProcessAndGetOutput(InstanceSettings.systemSettings.formatProberCommand, @"-v quiet -print_format xml -show_streams """ + filename + @"""");
List<StreamInfo> allStreamInfos = new List<StreamInfo> ();
StreamInfo lastStreamInfo = null;
// use XmlReader to read all informations from "stream"-tags and "tag"-tags
using (XmlReader reader = XmlReader.Create(new StringReader (stdout))) {
while (reader.Read ()) {
if (reader.NodeType != XmlNodeType.Element)
continue;
// the "stream"-tag contains most of the information needed as attributes
if (reader.Name == "stream") {
// get stream type
StreamType streamType;
switch(reader["codec_type"]) {
case "video": streamType = StreamType.ST_VIDEO; break;
case "audio": streamType = StreamType.ST_AUDIO; break;
case "subtitle": streamType = StreamType.ST_SUBTITLE; break;
default: streamType = StreamType.ST_UNKNOWN; break;
}
// read all other information into dictionary
var attributeDictionary = new Dictionary<String, String>();
for(int i = 0; i < reader.AttributeCount; i++) {
reader.MoveToNextAttribute();
attributeDictionary.Add(reader.Name, reader.Value);
}
StreamInfo streamInfo = new StreamInfo (Int32.Parse(reader["index"]), streamType, reader["codec_name"], attributeDictionary);
allStreamInfos.Add (streamInfo);
lastStreamInfo = streamInfo;
}
// the "tag"-tag provides additonal information (mainly language)
if (reader.Name == "tag") {
if (lastStreamInfo == null)
continue;
switch (reader ["key"]) {
case "language":
lastStreamInfo.m_language = reader ["value"] ?? "";
break;
default:
break;
}
}
}
}
return allStreamInfos;
}