ミラティブとWebRTC - WebRTC framework の中身を覗いてみよう / WebRTC framework AudioUnit Processing

Transcript

1. ϛϥςΟϒͱWebRTC WebRTC framework ͷத਎Λ೷͍ͯΈΑ͏ Naruki Chigira @_naru_jpn / Lib arXiv

   / ໌೔ϫΫνϯ2ճ໨

2. WebRTC framework

3. https://webrtc.org

4. WebRTC ͸ϛϥςΟϒͷͲ͜Ͱ࢖ΘΕ͍ͯΔͷ͔

5. ίϥϘ௨࿩ ഑৴ऀ ࢹௌऀ ࢹௌऀͱձ࿩Λ͠ͳ͕Β഑৴͕Ͱ͖ΔΑ

6. ίϥϘ഑৴ ഑৴ऀ A ഑৴ऀ B ഑৴ऀಉ࢜Ͱձ࿩Λ͠ͳ͕Β഑৴͕Ͱ͖ΔΑ

7. NEW! ίϥϘϚονϯά ഑৴ऀ A ഑৴ऀ B ಉ͡ήʔϜͰ഑৴͍ͯ͠Δਓಉ࢜ͰϚονϯά͢ΔʢҰ෦ެ։

8. ։ൃ͢ΔதͰͪΐͬͱࠔͬͨ͜ͱ͕͋ͬͨ

9. ഑৴ऀ ࢹௌऀ WebRTC ͷ઀ଓ࣌ʹΞϓϦ͕όοΫάϥ΢ϯυঢ়ଶʹ͋ΔͱɺԻ੠ͷೖग़ྗ͕Ͱ͖ͳ͘ͳͬͯ͠·͏ ϛϥςΟϒΞϓϦ͸ όοΫάϥ΢ϯυͰ ىಈத

10. όοΫάϥ΢ϯυͰ઀ଓ଴ػঢ়ଶΛ Ωϟϯηϧ͢ΔͳͲͯ͠ɺ੍ޚ͸Ͱ͖ͨ

11. ػೳ্͸੍ޚͰ͖͍ͯΔ͚Ͳɺ Ͳ͏ͯͦ͠͏ͳ͍ͬͯΔͷ͔ཧղͰ͖͍ͯͳ͍ͷͰ৮Δͷ͕ා͍!

12. WebRTC framework ͷத਎Λ೷͍ͯΈΑ͏!

13. https://webrtc.googlesource.com/src/

14. https://webrtc.googlesource.com/src/

15. https://webrtc.googlesource.com/src/+/refs/heads/main

16. Ի੠ͷ੍ޚΛ͍ͯ͠Δͱ͜ΖΛ೷͍ͯΈΑ͏!

17. https://webrtc.googlesource.com/src/+/refs/heads/main/sdk/objc/ This directory contains the Obj-C SDK for WebRTC. This

    includes wrappers for the C++ PeerConnection API and some platform speci fi c components for iOS and macOS.

18. https://webrtc.googlesource.com/src/+/refs/heads/main/sdk/objc/native/src/audio/ .mm ͍ͬͯ͏ͷ͸ Objective-C++ Λද֦͢ுࢠͩΑ

19. https://webrtc.googlesource.com/src/+/refs/heads/main/sdk/objc/native/src/audio/voice_processing_audio_unit.mm AudioOutputUnitStart ΛݺͿͱԻ੠ͷೖग़ྗॲཧ͕͸͡·ΔΑ voice_processing_audio_unit.mm

20. https://developer.apple.com/documentation/audiotoolbox/1439763-audiooutputunitstart AudioOutputUnitStart ΛݺͿͱԻ੠ͷೖग़ྗॲཧ͕͸͡·ΔΑ

21. AudioOutputUnitStart ͷৼΔ෣͍Λௐ΂ͯΈΑ͏

22. https://stackover fl ow.com/questions/61312360/auaudiounit-cant-play-audio-in-the-background-error-code-561145187

23. https://developer.apple.com/documentation/avfaudio/avaudiosession/errorcode/cannotstartrecording

24. AudioOutputUnitStart ͕όοΫάϥ΢ϯυͰࣦഊ͢ Δͷ͸ɺOSͷ࢓༷తʹ΋ͦ͏ͳ͍ͬͯΔΒ͍͠!

25. AudioOutputUnitStart ͕͍ͭݺ͹Ε͍ͯΔͷ͔΋֬ೝ͓ͯ͜͠͏

26. https://webrtc.googlesource.com/src/+/refs/heads/main/audio/audio_state.cc WebRTC ͷ઀ଓཱ͕֬ͨ͠ޙʹ AddReceivingStream ͕ݺ͹Εɺ
 StartPlayout ͷதͰ AudioOutputUnitStart ͕ݺ͹ΕΔ

27. ΞϓϦ͕όοΫάϥ΢ϯυঢ়ଶͩͱɺԻ੠ͷೖग़ྗॲ ཧͷ։࢝ʹࣦഊͯ͠͠·͏͜ͱ͕ཧղͰ͖ͨ!

28. ·ͱΊ όοΫάϥ΢ϯυͰԻ੠ͷ΍ΓͱΓ͕Ͱ͖ͳ͘ͳΔݱ৅͕ɺί ʔυϨϕϧͰཧղͰ͖ΔΑ͏ʹͳͬͨ ɾݪҼ͕Θ͔ͬͯɺͳͥͳͷ͔Λઆ໌Ͱ͖ΔΑ͏ʹͳͬͨ ɾWebRTC framework ͱগ͚ͩ͠஥ྑ͘ͳΕͨ

29. ͋Γ͕ͱ͏͍͟͝·ͨ͠! WE ARE HIRING! ੵۃ࠾༻தͩΑ!