Define DTS codec, add muxing and demuxing support across ISOBMFF, Matroska, and MPEG-TS, add DTS encode/decode support to @mediabunny/server

docs/codec-registry/dts.md

@@ -0,0 +1,44 @@
+---
+description: DTS (DTS Coherent Acoustics) audio codec definition, defining legal codec strings, decoder configs, and packet data formats.
+---
+
+<script setup>
+import { VPBadge } from 'vitepress/theme'
+</script>
+
+<VPBadge type="info" text="Audio codec" />
+
+# DTS codec registration
+
+## Description
+
+The DTS audio codec (DTS Coherent Acoustics), specified in [ETSI TS 102 114](https://www.etsi.org/deliver/etsi_ts/102100_102199/102114/01.06.01_60/ts_102114v010601p.pdf).
+
+## Codec ID
+
+```ts
+'dts'
+```
+
+## `EncodedPacket` data
+
+The packet's data must be a core substream frame as defined in Section 5 of [ETSI TS 102 114](https://www.etsi.org/deliver/etsi_ts/102100_102199/102114/01.06.01_60/ts_102114v010601p.pdf), beginning with the sync word `0x7FFE8001`, followed by any number of extension substreams as defined in Section 7.4.1 of [ETSI TS 102 114](https://www.etsi.org/deliver/etsi_ts/102100_102199/102114/01.06.01_60/ts_102114v010601p.pdf), each beginning with the sync word `0x64582025`. The core substream frame may be omitted.
+
+The bitstream must use 16-bit big-endian packing.
+
+## `EncodedPacket` type
+
+The packet's type is always `'key'`.
+
+## `AudioDecoderConfig` codec string
+
+The codec string must be one of the four four-character codes identifying which substreams the bitstream is built from:
+
+- `'dtsc'` - a core substream only
+- `'dtsh'` - a core substream with extension substreams
+- `'dtsl'` - extension substreams carrying lossless audio, with no core substream
+- `'dtse'` - DTS Express
+
+## `AudioDecoderConfig` description
+
+`description` is not used for this codec.

docs/codec-registry/overview.md

@@ -26,6 +26,7 @@ The registry is an extension of the [WebCodecs Codec Registry](https://www.w3.or
 - [FLAC](./flac)
 - [AC-3](./ac3)
 - [E-AC-3](./eac3)
+- [DTS](./dts)
 - [Linear PCM](./pcm)
 - [μ-law PCM](./ulaw)
 - [A-law PCM](./alaw)