Sergey Krashevich
2b7682cdb3
- replace traditional for loop with range-based for loop for clarity
refactor(ffmpeg): simplify cut function loop
- utilize range-based for loop instead of traditional for loop
refactor(ring): update API response mapping type
- change map type from `interface{}` to `any` for better type safety
refactor(stream): handle nil source in NewStream
- add nil check for source elements before processing
refactor(webrtc): unify payload handling in GetToken
- change map type from `interface{}` to `any` for consistency
refactor(ascii): optimize nested loops in Write function
- replace traditional for loops with range-based for loops for readability
refactor(bits): enhance readability in Reader methods
- replace traditional for loops with range-based for loops in Read functions
refactor(h264): modernize loop structures in DecodeConfig
- switch to range-based for loops for cleaner code
refactor(h265): streamline profile_tier_level loops
- utilize range-based for loops instead of traditional for loops
chore(core): remove commented-out test function for clarity
refactor(core): simplify RandString function loop
- change traditional for loop to range-based for loop
refactor(flvt): optimize timestamp handling in TestTimeToRTP
- switch to range-based for loop for iterating frames
refactor(nest): improve error handling in ExchangeSDP
- format error message with printf-style formatting for clarity
refactor(tapo): enhance securityEncode function
- change traditional for loop to range-based for loop for readability
fix(tcp): correct masking in websocket Write method
- replace traditional for loop with range-based for loop
refactor(tutk): modernize encoding loops in crypto functions
- utilize range-based for loops for better readability
refactor(tuya): unify data types in MQTT message struct
- change map type from `interface{}` to `any` for consistency
refactor(webrtc): standardize codec registration
- change map type from `interface{}` to `any` for type safety
refactor(yaml): simplify Unmarshal function signature
- update parameter type from `interface{}` to `any` for better clarity
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