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Move MediaAnalysis parsing helper methods to static class

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Malte Rosenbjerg 2021-03-15 23:17:56 +01:00
parent 0a146251e7
commit 8a314f02ae
1 changed files with 56 additions and 49 deletions
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105
FFMpegCore/FFProbe/MediaAnalysis.cs
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@ -7,8 +7,6 @@ namespace FFMpegCore
{ {
internal class MediaAnalysis : IMediaAnalysis internal class MediaAnalysis : IMediaAnalysis
{ {
private static readonly Regex DurationRegex = new Regex("^(\\d{1,2}:\\d{1,2}:\\d{1,2}(.\\d{1,7})?)", RegexOptions.Compiled);
internal MediaAnalysis(FFProbeAnalysis analysis) internal MediaAnalysis(FFProbeAnalysis analysis)
{ {
Format = ParseFormat(analysis.Format); Format = ParseFormat(analysis.Format);
@ -50,14 +48,14 @@ private VideoStream ParseVideoStream(FFProbeStream stream)
return new VideoStream return new VideoStream
{ {
Index = stream.Index, Index = stream.Index,
AvgFrameRate = DivideRatio(ParseRatioDouble(stream.AvgFrameRate, '/')), AvgFrameRate = MediaAnalysisUtils.DivideRatio(MediaAnalysisUtils.ParseRatioDouble(stream.AvgFrameRate, '/')),
BitRate = !string.IsNullOrEmpty(stream.BitRate) ? ParseIntInvariant(stream.BitRate) : default, BitRate = !string.IsNullOrEmpty(stream.BitRate) ? MediaAnalysisUtils.ParseIntInvariant(stream.BitRate) : default,
BitsPerRawSample = !string.IsNullOrEmpty(stream.BitsPerRawSample) ? ParseIntInvariant(stream.BitsPerRawSample) : default, BitsPerRawSample = !string.IsNullOrEmpty(stream.BitsPerRawSample) ? MediaAnalysisUtils.ParseIntInvariant(stream.BitsPerRawSample) : default,
CodecName = stream.CodecName, CodecName = stream.CodecName,
CodecLongName = stream.CodecLongName, CodecLongName = stream.CodecLongName,
DisplayAspectRatio = ParseRatioInt(stream.DisplayAspectRatio, ':'), DisplayAspectRatio = MediaAnalysisUtils.ParseRatioInt(stream.DisplayAspectRatio, ':'),
Duration = ParseDuration(stream), Duration = MediaAnalysisUtils.ParseDuration(stream),
FrameRate = DivideRatio(ParseRatioDouble(stream.FrameRate, '/')), FrameRate = MediaAnalysisUtils.DivideRatio(MediaAnalysisUtils.ParseRatioDouble(stream.FrameRate, '/')),
Height = stream.Height ?? 0, Height = stream.Height ?? 0,
Width = stream.Width ?? 0, Width = stream.Width ?? 0,
Profile = stream.Profile, Profile = stream.Profile,
@ -68,7 +66,56 @@ private VideoStream ParseVideoStream(FFProbeStream stream)
}; };
} }
private static TimeSpan ParseDuration(FFProbeStream ffProbeStream)
private AudioStream ParseAudioStream(FFProbeStream stream)
{
return new AudioStream
{
Index = stream.Index,
BitRate = !string.IsNullOrEmpty(stream.BitRate) ? MediaAnalysisUtils.ParseIntInvariant(stream.BitRate) : default,
CodecName = stream.CodecName,
CodecLongName = stream.CodecLongName,
Channels = stream.Channels ?? default,
ChannelLayout = stream.ChannelLayout,
Duration = MediaAnalysisUtils.ParseDuration(stream),
SampleRateHz = !string.IsNullOrEmpty(stream.SampleRate) ? MediaAnalysisUtils.ParseIntInvariant(stream.SampleRate) : default,
Profile = stream.Profile,
Language = stream.GetLanguage(),
Tags = stream.Tags,
};
}
}
public static class MediaAnalysisUtils
{
private static readonly Regex DurationRegex = new Regex("^(\\d{1,5}:\\d{1,2}:\\d{1,2}(.\\d{1,7})?)", RegexOptions.Compiled);
public static double DivideRatio((double, double) ratio) => ratio.Item1 / ratio.Item2;
public static (int, int) ParseRatioInt(string input, char separator)
{
if (string.IsNullOrEmpty(input)) return (0, 0);
var ratio = input.Split(separator);
return (ParseIntInvariant(ratio[0]), ParseIntInvariant(ratio[1]));
}
public static (double, double) ParseRatioDouble(string input, char separator)
{
if (string.IsNullOrEmpty(input)) return (0, 0);
var ratio = input.Split(separator);
return (ratio.Length > 0 ? ParseDoubleInvariant(ratio[0]) : 0, ratio.Length > 1 ? ParseDoubleInvariant(ratio[1]) : 0);
}
public static double ParseDoubleInvariant(string line) =>
double.Parse(line, System.Globalization.NumberStyles.Any, System.Globalization.CultureInfo.InvariantCulture);
public static int ParseIntInvariant(string line) =>
int.Parse(line, System.Globalization.NumberStyles.Any, System.Globalization.CultureInfo.InvariantCulture);
public static TimeSpan ParseDuration(FFProbeStream ffProbeStream)
{ {
return !string.IsNullOrEmpty(ffProbeStream.Duration) return !string.IsNullOrEmpty(ffProbeStream.Duration)
? TimeSpan.Parse(ffProbeStream.Duration) ? TimeSpan.Parse(ffProbeStream.Duration)
@ -80,45 +127,5 @@ private static TimeSpan ParseDuration(FFProbeStream ffProbeStream)
var durationMatch = DurationRegex.Match(durationTag ?? ""); var durationMatch = DurationRegex.Match(durationTag ?? "");
return durationMatch.Success ? durationMatch.Groups[1].Value : null; return durationMatch.Success ? durationMatch.Groups[1].Value : null;
} }
private AudioStream ParseAudioStream(FFProbeStream stream)
{
return new AudioStream
{
Index = stream.Index,
BitRate = !string.IsNullOrEmpty(stream.BitRate) ? ParseIntInvariant(stream.BitRate) : default,
CodecName = stream.CodecName,
CodecLongName = stream.CodecLongName,
Channels = stream.Channels ?? default,
ChannelLayout = stream.ChannelLayout,
Duration = ParseDuration(stream),
SampleRateHz = !string.IsNullOrEmpty(stream.SampleRate) ? ParseIntInvariant(stream.SampleRate) : default,
Profile = stream.Profile,
Language = stream.GetLanguage(),
Tags = stream.Tags,
};
}
private static double DivideRatio((double, double) ratio) => ratio.Item1 / ratio.Item2;
private static (int, int) ParseRatioInt(string input, char separator)
{
if (string.IsNullOrEmpty(input)) return (0, 0);
var ratio = input.Split(separator);
return (ParseIntInvariant(ratio[0]), ParseIntInvariant(ratio[1]));
}
private static (double, double) ParseRatioDouble(string input, char separator)
{
if (string.IsNullOrEmpty(input)) return (0, 0);
var ratio = input.Split(separator);
return (ratio.Length > 0 ? ParseDoubleInvariant(ratio[0]) : 0, ratio.Length > 1 ? ParseDoubleInvariant(ratio[1]) : 0);
}
private static double ParseDoubleInvariant(string line) =>
double.Parse(line, System.Globalization.NumberStyles.Any, System.Globalization.CultureInfo.InvariantCulture);
private static int ParseIntInvariant(string line) =>
int.Parse(line, System.Globalization.NumberStyles.Any, System.Globalization.CultureInfo.InvariantCulture);
} }
} }