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fix: Wave 18.1 review — pre-skip subtraction, t=0 anchor, PreSkip in sidecar, stderr on cancel

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daniel-c-harvey
2026-06-23 06:55:31 -04:00
parent 33d6f34d8a
commit 6add30a4ff
6 changed files with 251 additions and 45 deletions
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DeepDrftContent/Processors/Opus/OggOpusConstants.cs
+17 -2
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@@ -36,8 +36,23 @@ public static class OggOpusConstants
/// <summary>Sentinel granule position for a page that ends mid-packet (no usable timestamp).</summary>
public const ulong NoGranulePosition = 0xFFFFFFFFFFFFFFFFUL;
/// <summary>Header size of the serialized seek-index blob: totalBytes(8) + duration(8) + count(4).</summary>
public const int SeekIndexHeaderSize = 20;
/// <summary>
/// Minimum byte length of an <c>OpusHead</c> packet payload to safely read <c>pre_skip</c>.
/// RFC 7845 §5.1: "OpusHead"(8) + version(1) + channels(1) + pre_skip(2) = 12 bytes minimum.
/// </summary>
public const int OpusHeadMinSize = 12;
/// <summary>
/// Byte offset of <c>pre_skip</c> within the full <c>OpusHead</c> packet payload (including the
/// magic). RFC 7845 §5.1: "OpusHead"(8) + version(1) + channels(1) = 10 bytes before pre_skip.
/// </summary>
public const int OpusHeadPreSkipOffset = 10;
/// <summary>
/// Header size of the serialized seek-index blob:
/// totalBytes(8) + duration(8) + count(4) + preSkip(2) + reserved(2) = 24 bytes.
/// </summary>
public const int SeekIndexHeaderSize = 24;
/// <summary>Size of one serialized seek point: granulepos(8) + byteOffset(8).</summary>
public const int SeekPointSize = 16;