9b217a4e18
- Add Book.IsSpatial property and add it to search index - Read audio format of actual output files and store it in UserDefinedItem. Now works with MP3s. - Store last downloaded audio file version - Add IsSpatial, file version, and Audio Format to library exports and to template tags. Updated docs. - Add last downloaded audio file version and format info to the Last Downloaded tab - Migrated the DB - Update AAXClean with some bug fixes - Fixed error converting xHE-AAC audio files to mp3 when splitting by chapter (or trimming the audible branding from the beginning of the file) - Improve mp3 ID# tags support. Chapter titles are now preserved. - Add support for reading EC-3 and AC-4 audio format metadata
71 lines
1.9 KiB
C#
71 lines
1.9 KiB
C#
#nullable enable
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using Newtonsoft.Json;
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namespace DataLayer;
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public enum Codec : byte
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{
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Unknown,
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Mp3,
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AAC_LC,
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xHE_AAC,
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EC_3,
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AC_4
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}
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public class AudioFormat
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{
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public static AudioFormat Default => new(Codec.Unknown, 0, 0, 0);
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[JsonIgnore]
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public bool IsDefault => Codec is Codec.Unknown && BitRate == 0 && SampleRate == 0 && ChannelCount == 0;
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[JsonIgnore]
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public Codec Codec { get; set; }
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public int SampleRate { get; set; }
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public int ChannelCount { get; set; }
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public int BitRate { get; set; }
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public AudioFormat(Codec codec, int bitRate, int sampleRate, int channelCount)
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{
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Codec = codec;
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BitRate = bitRate;
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SampleRate = sampleRate;
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ChannelCount = channelCount;
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}
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public string CodecString => Codec switch
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{
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Codec.Mp3 => "mp3",
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Codec.AAC_LC => "AAC-LC",
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Codec.xHE_AAC => "xHE-AAC",
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Codec.EC_3 => "EC-3",
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Codec.AC_4 => "AC-4",
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Codec.Unknown or _ => "[Unknown]",
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};
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//Property | Start | Num | Max | Current Max |
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// | Bit | Bits | Value | Value Used |
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//-----------------------------------------------------
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//Codec | 35 | 4 | 15 | 5 |
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//BitRate | 23 | 12 | 4_095 | 768 |
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//SampleRate | 5 | 18 | 262_143 | 48_000 |
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//ChannelCount | 0 | 5 | 31 | 6 |
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public long Serialize() =>
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((long)Codec << 35) |
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((long)BitRate << 23) |
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((long)SampleRate << 5) |
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(long)ChannelCount;
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public static AudioFormat Deserialize(long value)
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{
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var codec = (Codec)((value >> 35) & 15);
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var bitRate = (int)((value >> 23) & 4_095);
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var sampleRate = (int)((value >> 5) & 262_143);
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var channelCount = (int)(value & 31);
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return new AudioFormat(codec, bitRate, sampleRate, channelCount);
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}
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public override string ToString()
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=> IsDefault ? "[Unknown Audio Format]"
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: $"{CodecString} ({ChannelCount}ch | {SampleRate:N0}Hz | {BitRate}kbps)";
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}
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