FFMpegCore/FFMpegCore/FFProbe/FFProbeAnalysis.cs

using System.Text.Json.Nodes;
using System.Text.Json.Serialization;

namespace FFMpegCore;

public class FFProbeAnalysis
{
    [JsonPropertyName("streams")] public List<FFProbeStream> Streams { get; set; } = null!;

    [JsonPropertyName("format")] public Format Format { get; set; } = null!;

    [JsonPropertyName("chapters")] public List<Chapter> Chapters { get; set; } = null!;

    [JsonIgnore] public IReadOnlyList<string> OutputData { get; set; } = new List<string>();

    [JsonIgnore] public IReadOnlyList<string> ErrorData { get; set; } = new List<string>();
}

public class FFProbeStream : ITagsContainer, IDispositionContainer
{
    [JsonPropertyName("index")] public int Index { get; set; }

    [JsonPropertyName("avg_frame_rate")] public string AvgFrameRate { get; set; } = null!;

    [JsonPropertyName("bits_per_raw_sample")]
    public string BitsPerRawSample { get; set; } = null!;

    [JsonPropertyName("bits_per_sample")] public int BitsPerSample { get; set; } = 0;

    [JsonPropertyName("bit_rate")] public string BitRate { get; set; } = null!;

    [JsonPropertyName("channels")] public int? Channels { get; set; }

    [JsonPropertyName("channel_layout")] public string ChannelLayout { get; set; } = null!;

    [JsonPropertyName("codec_type")] public string CodecType { get; set; } = null!;

    [JsonPropertyName("codec_name")] public string CodecName { get; set; } = null!;

    [JsonPropertyName("codec_long_name")] public string CodecLongName { get; set; } = null!;

    [JsonPropertyName("codec_tag")] public string CodecTag { get; set; } = null!;

    [JsonPropertyName("codec_tag_string")] public string CodecTagString { get; set; } = null!;

    [JsonPropertyName("display_aspect_ratio")]
    public string DisplayAspectRatio { get; set; } = null!;

    [JsonPropertyName("sample_aspect_ratio")]
    public string SampleAspectRatio { get; set; } = null!;

    [JsonPropertyName("start_time")] public string StartTime { get; set; } = null!;

    [JsonPropertyName("duration")] public string Duration { get; set; } = null!;

    [JsonPropertyName("profile")] public string Profile { get; set; } = null!;

    [JsonPropertyName("width")] public int? Width { get; set; }

    [JsonPropertyName("height")] public int? Height { get; set; }

    [JsonPropertyName("r_frame_rate")] public string FrameRate { get; set; } = null!;

    [JsonPropertyName("pix_fmt")] public string PixelFormat { get; set; } = null!;

    [JsonPropertyName("level")] public int Level { get; set; }

    [JsonPropertyName("sample_rate")] public string SampleRate { get; set; } = null!;

    [JsonPropertyName("side_data_list")] public List<Dictionary<string, JsonValue>> SideData { get; set; } = null!;

    [JsonPropertyName("color_range")] public string ColorRange { get; set; } = null!;

    [JsonPropertyName("color_space")] public string ColorSpace { get; set; } = null!;

    [JsonPropertyName("color_transfer")] public string ColorTransfer { get; set; } = null!;

    [JsonPropertyName("color_primaries")] public string ColorPrimaries { get; set; } = null!;

    [JsonPropertyName("disposition")] public Dictionary<string, int> Disposition { get; set; } = null!;

    [JsonPropertyName("tags")] public Dictionary<string, string>? Tags { get; set; }
}

public class Format : ITagsContainer
{
    [JsonPropertyName("filename")] public string Filename { get; set; } = null!;

    [JsonPropertyName("nb_streams")] public int NbStreams { get; set; }

    [JsonPropertyName("nb_programs")] public int NbPrograms { get; set; }

    [JsonPropertyName("format_name")] public string FormatName { get; set; } = null!;

    [JsonPropertyName("format_long_name")] public string FormatLongName { get; set; } = null!;

    [JsonPropertyName("start_time")] public string StartTime { get; set; } = null!;

    [JsonPropertyName("duration")] public string Duration { get; set; } = null!;

    [JsonPropertyName("size")] public string Size { get; set; } = null!;

    [JsonPropertyName("bit_rate")] public string? BitRate { get; set; } = null!;

    [JsonPropertyName("probe_score")] public int ProbeScore { get; set; }

    [JsonPropertyName("tags")] public Dictionary<string, string>? Tags { get; set; }
}

public class Chapter : ITagsContainer
{
    [JsonPropertyName("id")] public long Id { get; set; }

    [JsonPropertyName("time_base")] public string TimeBase { get; set; } = null!;

    [JsonPropertyName("start")] public long Start { get; set; }

    [JsonPropertyName("start_time")] public string StartTime { get; set; } = null!;

    [JsonPropertyName("end")] public long End { get; set; }

    [JsonPropertyName("end_time")] public string EndTime { get; set; } = null!;

    [JsonPropertyName("tags")] public Dictionary<string, string>? Tags { get; set; }
}

public interface IDispositionContainer
{
    Dictionary<string, int> Disposition { get; set; }
}

public interface ITagsContainer
{
    Dictionary<string, string>? Tags { get; set; }
}

public static class TagExtensions
{
    private static string? TryGetTagValue(ITagsContainer tagsContainer, string key)
    {
        if (tagsContainer.Tags != null && tagsContainer.Tags.TryGetValue(key, out var tagValue))
        {
            return tagValue;
        }

        return null;
    }

    public static string? GetLanguage(this ITagsContainer tagsContainer)
    {
        return TryGetTagValue(tagsContainer, "language");
    }

    public static string? GetCreationTime(this ITagsContainer tagsContainer)
    {
        return TryGetTagValue(tagsContainer, "creation_time");
    }

    public static string? GetRotate(this ITagsContainer tagsContainer)
    {
        return TryGetTagValue(tagsContainer, "rotate");
    }

    public static string? GetDuration(this ITagsContainer tagsContainer)
    {
        return TryGetTagValue(tagsContainer, "duration");
    }
}

public static class DispositionExtensions
{
    private static int? TryGetDispositionValue(IDispositionContainer dispositionContainer, string key)
    {
        if (dispositionContainer.Disposition != null && dispositionContainer.Disposition.TryGetValue(key, out var dispositionValue))
        {
            return dispositionValue;
        }

        return null;
    }

    public static int? GetDefault(this IDispositionContainer tagsContainer)
    {
        return TryGetDispositionValue(tagsContainer, "default");
    }

    public static int? GetForced(this IDispositionContainer tagsContainer)
    {
        return TryGetDispositionValue(tagsContainer, "forced");
    }
}