mirror of
https://github.com/AlexxIT/go2rtc.git
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Sergey Krashevich
a591186da6
HDS protocol tests (15 tests, 4 benchmarks): - Message structure for SendMediaInit and SendMediaFragment - Multi-chunk splitting for fragments > 256KB - Chunk boundary handling and sequence preservation - WriteEvent/WriteResponse/WriteRequest round-trip - opack helper functions HKSV consumer tests (14 tests, 3 benchmarks): - Consumer creation and field initialization - GOP buffer flush with sequence numbering - Activate with init segment and seqNum=2 - Activate timeout and error handling - Stop safety (double-stop, deactivation) - WriteTo blocking until Stop Also fixes broken hds_test.go (undefined Client → NewConn).
Home Accessory Protocol
PS. Character = Characteristic
Device - HomeKit end device (swith, camera, etc)
- mDNS name:
MyCamera._hap._tcp.local. - DeviceID - mac-like:
0E:AA:CE:2B:35:71 - HomeKit device is described by:
- one or more
Accessories- hasAIDandServices Services- hasIID,TypeandCharactersCharacters- hasIID,Type,FormatandValue
- one or more
Client - HomeKit client (iPhone, iPad, MacBook or opensource library)
- ClientID - static random UUID
- ClientPublic/ClientPrivate - static random 32 byte keypair
- can pair with Device (exchange ClientID/ClientPublic, ServerID/ServerPublic using Pin)
- can auth to Device using ClientPrivate
- holding persistant Secure connection to device
- can read device Accessories
- can read and write device Characters
- can subscribe on device Characters change (Event)
Server - HomeKit server (soft on end device or opensource library)
- ServerID - same as DeviceID (using for Client auth)
- ServerPublic/ServerPrivate - static random 32 byte keypair
AAC ELD
Requires ffmpeg built with --enable-libfdk-aac
-acodec libfdk_aac -aprofile aac_eld
| SampleRate | RTPTime | constantDuration | objectType |
|---|---|---|---|
| 8000 | 60 | =8000/1000*60=480 | 39 (AAC ELD) |
| 16000 | 30 | =16000/1000*30=480 | 39 (AAC ELD) |
| 24000 | 20 | =24000/1000*20=480 | 39 (AAC ELD) |
| 16000 | 60 | =16000/1000*60=960 | 23 (AAC LD) |
| 24000 | 40 | =24000/1000*40=960 | 23 (AAC LD) |
Useful links
- https://github.com/apple/HomeKitADK/blob/master/Documentation/crypto.md
- https://github.com/apple/HomeKitADK/blob/master/HAP/HAPPairingPairSetup.c
- Extracting HomeKit Pairing Keys
- HAP in AirPlay2 receiver
- HomeKit Secure Video Unofficial Specification
- Homebridge Camera FFmpeg
- https://github.com/ljezny/Particle-HAP/blob/master/HAP-Specification-Non-Commercial-Version.pdf