private static bool GetIdetInfoFromText(string text, out FfMpegIdetInfo idetInfo)
{
if (string.IsNullOrEmpty(text))
{
throw new ArgumentNullException(nameof(text));
}
// Init
idetInfo = new FfMpegIdetInfo();
// Parse the text
try
{
// Example:
// frame= 2048 fps=294 q=-0.0 Lsize= 6220800kB time=00:01:21.92 bitrate=622080.0kbits/s speed=11.8x
// video:6220800kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000000%
// [Parsed_idet_0 @ 00000234e42d0440] Repeated Fields: Neither: 2049 Top: 0 Bottom: 0
// [Parsed_idet_0 @ 00000234e42d0440] Single frame detection: TFF: 0 BFF: 0 Progressive: 1745 Undetermined: 304
// [Parsed_idet_0 @ 00000234e42d0440] Multi frame detection: TFF: 0 BFF: 0 Progressive: 2021 Undetermined: 28
// Pattern
const string repeatedFields = @"\[Parsed_idet_0\ \@\ (.*?)\]\ Repeated\ Fields:\ Neither:(?<repeated_neither>.*?)Top:(?<repeated_top>.*?)Bottom:(?<repeated_bottom>.*?)$";
const string singleFrame = @"\[Parsed_idet_0\ \@\ (.*?)\]\ Single\ frame\ detection:\ TFF:(?<single_tff>.*?)BFF:(?<single_bff>.*?)Progressive:(?<single_prog>.*?)Undetermined:(?<single_und>.*?)$";
const string multiFrame = @"\[Parsed_idet_0\ \@\ (.*?)\]\ Multi\ frame\ detection:\ TFF:(?<multi_tff>.*?)BFF:(?<multi_bff>.*?)Progressive:(?<multi_prog>.*?)Undetermined:(?<multi_und>.*?)$";
// We need to match in LF not CRLF mode else $ does not work as expected
const string pattern = $"{repeatedFields}\n{singleFrame}\n{multiFrame}";
string textLf = text.Replace("\r\n", "\n", StringComparison.Ordinal);
// Match
Regex regex = new(pattern, RegexOptions.Multiline | RegexOptions.IgnoreCase);
Match match = regex.Match(textLf);
Debug.Assert(match.Success);
// Get the frame counts
idetInfo.RepeatedFields.Neither = int.Parse(match.Groups["repeated_neither"].Value.Trim(), CultureInfo.InvariantCulture);
idetInfo.RepeatedFields.Top = int.Parse(match.Groups["repeated_top"].Value.Trim(), CultureInfo.InvariantCulture);
idetInfo.RepeatedFields.Bottom = int.Parse(match.Groups["repeated_bottom"].Value.Trim(), CultureInfo.InvariantCulture);
idetInfo.SingleFrame.Tff = int.Parse(match.Groups["single_tff"].Value.Trim(), CultureInfo.InvariantCulture);
idetInfo.SingleFrame.Bff = int.Parse(match.Groups["single_bff"].Value.Trim(), CultureInfo.InvariantCulture);
idetInfo.SingleFrame.Progressive = int.Parse(match.Groups["single_prog"].Value.Trim(), CultureInfo.InvariantCulture);
idetInfo.SingleFrame.Undetermined = int.Parse(match.Groups["single_und"].Value.Trim(), CultureInfo.InvariantCulture);
idetInfo.MultiFrame.Tff = int.Parse(match.Groups["multi_tff"].Value.Trim(), CultureInfo.InvariantCulture);
idetInfo.MultiFrame.Bff = int.Parse(match.Groups["multi_bff"].Value.Trim(), CultureInfo.InvariantCulture);
idetInfo.MultiFrame.Progressive = int.Parse(match.Groups["multi_prog"].Value.Trim(), CultureInfo.InvariantCulture);
idetInfo.MultiFrame.Undetermined = int.Parse(match.Groups["multi_und"].Value.Trim(), CultureInfo.InvariantCulture);
}
catch (Exception e) when(Log.Logger.LogAndHandle(e, MethodBase.GetCurrentMethod()?.Name))
{
return(false);
}
return(true);
}
public bool GetIdetInfo(string filename, out FfMpegIdetInfo idetInfo)
{
idetInfo = null;
return(GetIdetInfoText(filename, out string text) &&
GetIdetInfoFromText(text, out idetInfo));
}
