AVAudioSessionの全体像を掴む.pdf

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1. AVAudioSessionͷશମ૾Λ௫Ή
2. ࣗݾ঺հ • Name: entaku • Work: Voicy • X: https://x.com/entaku_0818 • Hobby: ԻָϑΣε/ݸਓ։ൃ • Other: SwiftѪ޷ձӡӦ (https://love-swift.connpass.com/)
3. ԻָϑΣε
4. γϯϓϧ࿥Ի ݸਓ։ൃ ⭐ධՁ95݅ʂʂʂ
5. SwiftѪ޷ձӡӦ ೥຤ʹΧϨʔ৯΂ΔΠϕϯτ΍Δ͔ΒདྷͯͶ… https://love-swift.connpass.com/
6. AVAudioSessionͷશମ૾Λ௫Ή
7. https://fortee.jp/iosdc-japan-2024/proposal/8c6f01d9-8fd3-4d5e-afef-f29d561f3c39
8. https://speakerdeck.com/entaku/core-audioche-di-jie-pou?slide=18
9. AVAudioSession https://developer.apple.com/documentation/avfaudio/avaudiosession
10. AVAudioSession 1. ໾ׂɿ • ΞϓϦͱOS/ϋʔυ΢ΣΞؒͷڮ౉͠ • ΞϓϦͷΦʔσΟΦͷҰൠతͳੑ࣭ΛOSʹ఻͑Δ 2. ಛ௃ɿ • ۩ମతͳಈ࡞΍ϋʔυ΢ΣΞͱͷৄࡉͳ΍ΓऔΓΛࢦఆ͢Δඞཁ͕ͳ͍ • ͦΕΒͷৄࡉͳ؅ཧ͸ΦʔσΟΦηογϣϯʹҕ೚͞ΕΔ 3. ϝϦοτɿ • OS͕ϢʔβʔͷΦʔσΟΦମݧΛ࠷దʹ؅ཧͰ͖Δ • ։ൃऀ͸௿Ϩϕϧͷ࣮૷ৄࡉΛؾʹ͢Δඞཁ͕ͳ͍ •ΦʔσΟΦηογϣϯ͸ɺΞϓϦͱΦϖϨʔ ςΟϯάγεςϜͱͷؒͷ஥հ໾ͱͯ͠ػೳ͠ ·͢ɻ •ΦʔσΟΦηογϣϯΛ࢖༻͢Δ͜ͱͰɺΦʔ σΟΦϋʔυ΢ΣΞͱͷ۩ମతͳಈ࡞΍ඞཁͳ ૬ޓ࡞༻Λৄࡉʹࣔ͢͜ͱͳ͘ɺΞϓϦͷΦʔ σΟΦͷҰൠతͳੑ࣭ΛΦϖϨʔςΟϯάγε ςϜʹ఻͑Δ͜ͱ͕Ͱ͖·͢ɻ
11. AVAudioSession AVAudioSessionͷॳظ஋ͬͯ஌ͬͯ·͢ʁ
12. AVAudioSession try audioSession.setActive(true) ॳظ஋ͬͯ஌ͬͯ·͢ʁ
13. AVAudioSessionͷॳظ஋ try audioSession.setCategory(.soloAmbient, mode: .default, options: []) try audioSession.setActive(true)
14. AVAudioSessionͷઃఆ try audioSession.setCategory(.soloAmbient, mode: .default, options: []) try audioSession.setActive(true) Category Mode Options
15. AVAudioSession Category 1. ambient • ଞΞϓϦͷԻ੠ͱࠞ߹࠶ੜ • BGMɺޮՌԻ޲͚ • αΠϨϯτϞʔυͰ͸࠶ੜఀࢭ • ϢʔεέʔεɿิॿతͳޮՌԻ͕ඞཁͳ࣌ 2. soloAmbient • ଞΞϓϦͷԻ੠Λதஅ • σϑΥϧτΧςΰϦ • αΠϨϯτϞʔυͰ͸࠶ੜఀࢭ • Ϣʔεέʔεɿ୯ಠͷԻ੠࠶ੜ 3. playback • όοΫάϥ΢ϯυ࠶ੜରԠ • αΠϨϯτϞʔυͰ΋࠶ੜܧଓ • ଞΞϓϦͷԻ੠Λதஅ • ϢʔεέʔεɿԻָϓϨʔϠʔɺಈըϓϨʔϠʔ 4. record • ࿥ԻʹಛԽ • ଞΞϓϦͷԻ੠Λதஅ • ೖྗʹ࠷దԽ • ϢʔεέʔεɿϘΠεϝϞɺ࿥ԻΞϓϦ 5. playAndRecord • ಉ࣌ʹ࿥Իͱ࠶ੜ͕Մೳ • ૒ํ޲௨৴ʹରԠ • ϏσΦνϟοτɺVoIP޲͚ • Ϣʔεέʔεɿ௨࿩ΞϓϦɺϏσΦձٞ 6. multiRoute • ෳ਺ͷೖग़ྗϧʔτΛಉ࣌࢖༻ • ϓϩ޲͚ΦʔσΟΦػೳ • ߴ౓ͳ੍ޚ͕Մೳ • ϢʔεέʔεɿDJ ΞϓϦɺԻ੍ָ࡞ΞϓϦ
16. AVAudioSession Category 1. ambient • ଞΞϓϦͷԻ੠ͱࠞ߹࠶ੜ • BGMɺޮՌԻ޲͚ • αΠϨϯτϞʔυͰ͸࠶ੜఀࢭ • ϢʔεέʔεɿิॿతͳޮՌԻ͕ඞཁͳ࣌ 2. soloAmbient • ଞΞϓϦͷԻ੠Λதஅ • σϑΥϧτΧςΰϦ • αΠϨϯτϞʔυͰ͸࠶ੜఀࢭ • Ϣʔεέʔεɿ୯ಠͷԻ੠࠶ੜ 3. playback • όοΫάϥ΢ϯυ࠶ੜରԠ • αΠϨϯτϞʔυͰ΋࠶ੜܧଓ • ଞΞϓϦͷԻ੠Λதஅ • ϢʔεέʔεɿԻָϓϨʔϠʔɺಈըϓϨʔ Ϡʔ 4. record • ࿥ԻʹಛԽ • ଞΞϓϦͷԻ੠Λதஅ • ೖྗʹ࠷దԽ • ϢʔεέʔεɿϘΠεϝϞɺ࿥ԻΞϓϦ 5. playAndRecord • ಉ࣌ʹ࿥Իͱ࠶ੜ͕Մೳ • ૒ํ޲௨৴ʹରԠ • ϏσΦνϟοτɺVoIP޲͚ • Ϣʔεέʔεɿ௨࿩ΞϓϦɺϏσΦձٞ 6. multiRoute • ෳ਺ͷೖग़ྗϧʔτΛಉ࣌࢖༻ • ϓϩ޲͚ΦʔσΟΦػೳ • ߴ౓ͳ੍ޚ͕Մೳ • ϢʔεέʔεɿDJ ΞϓϦɺԻ੍ָ࡞ΞϓϦ
17. AVAudioSession Category 1. ambient • ଞΞϓϦͷԻ੠ͱࠞ߹࠶ੜ • BGMɺޮՌԻ޲͚ • αΠϨϯτϞʔυͰ͸࠶ੜఀࢭ • ϢʔεέʔεɿิॿతͳޮՌԻ͕ඞཁͳ࣌ 2. soloAmbient • ଞΞϓϦͷԻ੠Λதஅ • σϑΥϧτΧςΰϦ • αΠϨϯτϞʔυͰ͸࠶ੜఀࢭ • Ϣʔεέʔεɿ୯ಠͷԻ੠࠶ੜ 3. playback • όοΫάϥ΢ϯυ࠶ੜରԠ • αΠϨϯτϞʔυͰ΋࠶ੜܧଓ • ଞΞϓϦͷԻ੠Λதஅ • ϢʔεέʔεɿԻָϓϨʔϠʔɺಈըϓϨʔ Ϡʔ 4. record • ࿥ԻʹಛԽ • ଞΞϓϦͷԻ੠Λதஅ • ೖྗʹ࠷దԽ • ϢʔεέʔεɿϘΠεϝϞɺ࿥ԻΞϓϦ 5. playAndRecord • ಉ࣌ʹ࿥Իͱ࠶ੜ͕Մೳ • ૒ํ޲௨৴ʹରԠ • ϏσΦνϟοτɺVoIP޲͚ • Ϣʔεέʔεɿ௨࿩ΞϓϦɺϏσΦձٞ 6. multiRoute • ෳ਺ͷೖग़ྗϧʔτΛಉ࣌࢖༻ • ϓϩ޲͚ΦʔσΟΦػೳ • ߴ౓ͳ੍ޚ͕Մೳ • ϢʔεέʔεɿDJ ΞϓϦɺԻ੍ָ࡞ΞϓϦ 1. ໾ׂɿ • ΞϓϦͱOS/ϋʔυ΢ΣΞؒͷڮ౉͠ • ΞϓϦͷΦʔσΟΦͷҰൠతͳੑ࣭ΛOSʹ఻͑Δ 2. ಛ௃ɿ • ۩ମతͳಈ࡞΍ϋʔυ΢ΣΞͱͷৄࡉͳ΍ΓऔΓΛࢦఆ͢Δඞཁ͕ͳ͍ • ͦΕΒͷৄࡉͳ؅ཧ͸ΦʔσΟΦηογϣϯʹҕ೚͞ΕΔ 3. ϝϦοτɿ • OS͕ϢʔβʔͷΦʔσΟΦମݧΛ࠷దʹ؅ཧͰ͖Δ • ։ൃऀ͸௿Ϩϕϧͷ࣮૷ৄࡉΛؾʹ͢Δඞཁ͕ͳ͍ ͲΜͳΞϓϦʹ͢Δ͔ʁ ར༻༻్ͰΧςΰϦΛબͿ
18. AVAudioSession Mode 1. default • جຊతͳԻ੠࠶ੜ༻ • ಛผͳ࠷దԽͳ͠ • ҰൠతͳΞϓϦͷඪ४ઃఆ 2. moviePlayback • ಈը࠶ੜʹ࠷దԽʢ48kHzʣ • όοϑΝαΠζΛେ͖͘ઃఆ • ಈըϓϨʔϠʔΞϓϦ޲͚ 3. videoRecording • ߴԻ࣭࿥Իʢ96kHzʣ • ࠷খݶͷϨΠςϯγʔ • ΧϝϥΞϓϦͷ࿥ըػೳ޲͚ 4.voiceChat/videoChat • ΤίʔΩϟϯηϧػೳ • ௿ϨΠςϯγʔઃఆ • ௨࿩ΞϓϦɺϏσΦձٞ޲͚ 5.gameChat • ήʔϜޮՌԻͱͷཱ྆ • ௿ϨΠςϯγʔ • ϚϧνϓϨΠϠʔήʔϜ޲͚ 6.measurement • ৴߸ॲཧΛ࠷খݶʹ • ਖ਼֬ͳԻ੠ଌఆ༻ • Ի੠෼ੳΞϓϦ޲͚ 7.spokenAudio • Ի੠໌ྎ౓ॏࢹ • ϙουΩϟετɺΦʔσΟΦϒοΫ޲͚ • Ի੠ίϯςϯπ࠶ੜ༻
19. AVAudioSession Mode 1. default • جຊతͳԻ੠࠶ੜ༻ • ಛผͳ࠷దԽͳ͠ • ҰൠతͳΞϓϦͷඪ४ઃఆ 2. moviePlayback • ಈը࠶ੜʹ࠷దԽʢ48kHzʣ • όοϑΝαΠζΛେ͖͘ઃఆ • ಈըϓϨʔϠʔΞϓϦ޲͚ 3. videoRecording • ߴԻ࣭࿥Իʢ96kHzʣ • ࠷খݶͷϨΠςϯγʔ • ΧϝϥΞϓϦͷ࿥ըػೳ޲͚ 4.voiceChat/videoChat • ΤίʔΩϟϯηϧػೳ • ௿ϨΠςϯγʔઃఆ • ௨࿩ΞϓϦɺϏσΦձٞ޲͚ 5.gameChat • ήʔϜޮՌԻͱͷཱ྆ • ௿ϨΠςϯγʔ • ϚϧνϓϨΠϠʔήʔϜ޲͚ 6.measurement • ৴߸ॲཧΛ࠷খݶʹ • ਖ਼֬ͳԻ੠ଌఆ༻ • Ի੠෼ੳΞϓϦ޲͚ 7.spokenAudio • Ի੠໌ྎ౓ॏࢹ • ϙουΩϟετɺΦʔσΟΦϒοΫ޲͚ • Ի੠ίϯςϯπ࠶ੜ༻
20. AVAudioSession Mode 1. default • جຊతͳԻ੠࠶ੜ༻ • ಛผͳ࠷దԽͳ͠ • ҰൠతͳΞϓϦͷඪ४ઃఆ 2. moviePlayback • ಈը࠶ੜʹ࠷దԽʢ48kHzʣ • όοϑΝαΠζΛେ͖͘ઃఆ • ಈըϓϨʔϠʔΞϓϦ޲͚ 3. videoRecording • ߴԻ࣭࿥Իʢ96kHzʣ • ࠷খݶͷϨΠςϯγʔ • ΧϝϥΞϓϦͷ࿥ըػೳ޲͚ 4.voiceChat/videoChat • ΤίʔΩϟϯηϧػೳ • ௿ϨΠςϯγʔઃఆ • ௨࿩ΞϓϦɺϏσΦձٞ޲͚ 5.gameChat • ήʔϜޮՌԻͱͷཱ྆ • ௿ϨΠςϯγʔ • ϚϧνϓϨΠϠʔήʔϜ޲͚ 6.measurement • ৴߸ॲཧΛ࠷খݶʹ • ਖ਼֬ͳԻ੠ଌఆ༻ • Ի੠෼ੳΞϓϦ޲͚ 7.spokenAudio • Ի੠໌ྎ౓ॏࢹ • ϙουΩϟετɺΦʔσΟΦϒοΫ޲͚ • Ի੠ίϯςϯπ࠶ੜ༻ 1. ໾ׂɿ • ΞϓϦͱOS/ϋʔυ΢ΣΞؒͷڮ౉͠ • ΞϓϦͷΦʔσΟΦͷҰൠతͳੑ࣭ΛOSʹ఻͑Δ 2. ಛ௃ɿ • ۩ମతͳಈ࡞΍ϋʔυ΢ΣΞͱͷৄࡉͳ΍ΓऔΓΛࢦఆ͢Δඞཁ͕ͳ͍ • ͦΕΒͷৄࡉͳ؅ཧ͸ΦʔσΟΦηογϣϯʹҕ೚͞ΕΔ 3. ϝϦοτɿ • OS͕ϢʔβʔͷΦʔσΟΦମݧΛ࠷దʹ؅ཧͰ͖Δ • ։ൃऀ͸௿Ϩϕϧͷ࣮૷ৄࡉΛؾʹ͢Δඞཁ͕ͳ͍ ͲΜͳΞϓϦʹ͢Δ͔ʁ ར༻༻్ͰϞʔυΛબͿ
21. AVAudio Option 1. mixWithOthers • ଞΞϓϦͱͷԻ੠ϛΩγϯάΛڐՄ • BGM࠶ੜதʹޮՌԻΛ௥Ճ͢Δ৔߹ͳͲʹ࢖༻ • ambient, playback, playAndRecordΧςΰϦͰ࢖༻Մ ೳ 2. duckOthers • ࣗΞϓϦͷԻ੠࠶ੜ࣌ʹଞΞϓϦͷԻྔΛࣗಈతʹԼ ͛Δ • φϏήʔγϣϯΞϓϦͷҊ಺Ի੠ͳͲͰ࢖༻ • playback, playAndRecordΧςΰϦͰ࢖༻Մೳ 3. interruptSpokenAudioAndMixWithOthers • Ի੠ίϯςϯπʢϙουΩϟετͳͲʣΛதஅΛ͢Δ • .mixWithOthersͷ֦ுΦϓγϣϯ • φϏήʔγϣϯΞϓϦͳͲͰ࢖༻ 4. allowBluetooth • BluetoothϔουηοτʢHFP/HSPʣͱͷ઀ଓΛڐՄ • ௨࿩΍ϘΠενϟοτ༻ • playAndRecordΧςΰϦͰओʹ࢖༻ 5. allowBluetoothA2DP • BluetoothεςϨΦΦʔσΟΦʢA2DPʣͷ࢖༻ΛڐՄ • ߴ඼࣭ͳԻָ࠶ੜ༻ • playback, playAndRecordΧςΰϦͰ࢖༻Մೳ 6. allowAirPlay • AirPlayσόΠε΁ͷग़ྗΛڐՄ • ϫΠϠϨε࠶ੜ༻ • playback, playAndRecordΧςΰϦͰ࢖༻Մೳ 7. defaultToSpeaker • ಺ଂεϐʔΧʔΛ༏ઌతʹ࢖༻ • ϏσΦ௨࿩΍ϘΠενϟοτͰ࢖༻ • playAndRecordΧςΰϦͰओʹ࢖༻
22. AVAudio Option 1. mixWithOthers • ଞΞϓϦͱͷԻ੠ϛΩγϯάΛڐՄ • BGM࠶ੜதʹޮՌԻΛ௥Ճ͢Δ৔߹ͳͲʹ࢖༻ • ambient, playback, playAndRecordΧςΰϦͰ࢖༻Մ ೳ 2. duckOthers • ࣗΞϓϦͷԻ੠࠶ੜ࣌ʹଞΞϓϦͷԻྔΛࣗಈతʹԼ ͛Δ • φϏήʔγϣϯΞϓϦͷҊ಺Ի੠ͳͲͰ࢖༻ • playback, playAndRecordΧςΰϦͰ࢖༻Մೳ 3. interruptSpokenAudioAndMixWithOthers • Ի੠ίϯςϯπʢϙουΩϟετͳͲʣΛதஅΛ͢Δ • .mixWithOthersͷ֦ுΦϓγϣϯ • φϏήʔγϣϯΞϓϦͳͲͰ࢖༻ 4. allowBluetooth • BluetoothϔουηοτʢHFP/HSPʣͱͷ઀ଓΛڐՄ • ௨࿩΍ϘΠενϟοτ༻ • playAndRecordΧςΰϦͰओʹ࢖༻ 5. allowBluetoothA2DP • BluetoothεςϨΦΦʔσΟΦʢA2DPʣͷ࢖༻ΛڐՄ • ߴ඼࣭ͳԻָ࠶ੜ༻ • playback, playAndRecordΧςΰϦͰ࢖༻Մೳ 6. allowAirPlay • AirPlayσόΠε΁ͷग़ྗΛڐՄ • ϫΠϠϨε࠶ੜ༻ • playback, playAndRecordΧςΰϦͰ࢖༻Մೳ 7. defaultToSpeaker • ಺ଂεϐʔΧʔΛ༏ઌతʹ࢖༻ • ϏσΦ௨࿩΍ϘΠενϟοτͰ࢖༻ • playAndRecordΧςΰϦͰओʹ࢖༻ 1. ໾ׂɿ • ΞϓϦͱOS/ϋʔυ΢ΣΞؒͷڮ౉͠ • ΞϓϦͷΦʔσΟΦͷҰൠతͳੑ࣭ΛOSʹ఻͑Δ 2. ಛ௃ɿ • ۩ମతͳಈ࡞΍ϋʔυ΢ΣΞͱͷৄࡉͳ΍ΓऔΓΛࢦఆ͢Δඞཁ͕ͳ͍ • ͦΕΒͷৄࡉͳ؅ཧ͸ΦʔσΟΦηογϣϯʹҕ೚͞ΕΔ 3. ϝϦοτɿ • OS͕ϢʔβʔͷΦʔσΟΦମݧΛ࠷దʹ؅ཧͰ͖Δ • ։ൃऀ͸௿Ϩϕϧͷ࣮૷ৄࡉΛؾʹ͢Δඞཁ͕ͳ͍ ΧςΰϦʹΑͬͯͲͷΑ͏ͳΦϓ γϣϯ͕࢖͑Δ͔Θ͔Δ
23. AVAudioSessionͷઃఆ try audioSession.setCategory(.soloAmbient, mode: .default, options: []) try audioSession.setActive(true) Category Mode Options
24. AVAudioSessionͷઃఆ try audioSession.setCategory(.soloAmbient, mode: .default, options: []) try audioSession.setActive(true) Category Mode Options 1. ໾ׂɿ • ΞϓϦͱOS/ϋʔυ΢ΣΞؒͷڮ౉͠ • ΞϓϦͷΦʔσΟΦͷҰൠతͳੑ࣭ΛOSʹ఻͑Δ 2. ಛ௃ɿ • ۩ମతͳಈ࡞΍ϋʔυ΢ΣΞͱͷৄࡉͳ΍ΓऔΓΛࢦఆ͢Δඞཁ͕ͳ͍ • ͦΕΒͷৄࡉͳ؅ཧ͸ΦʔσΟΦηογϣϯʹҕ೚͞ΕΔ 3. ϝϦοτɿ • OS͕ϢʔβʔͷΦʔσΟΦମݧΛ࠷దʹ؅ཧͰ͖Δ • ։ൃऀ͸௿Ϩϕϧͷ࣮૷ৄࡉΛؾʹ͢Δඞཁ͕ͳ͍ ͲΜͳΞϓϦʹ͢Δ͔ʁ ར༻༻్͕෼͔Ε͹ɺ AVAudioSessionͷઃఆ͕Θ͔Δ
25. Ͱ͸Έͳ͞Μ͜Ε͸Ͳ͏ͳΔͰ͠ΐ͏ʁ try audioSession.setCategory(.playback, mode: .videoRecording) try audioSession.setActive(true)
26. A.ઃఆͰ͖·͢ try audioSession.setCategory(.playback, mode: .videoRecording) try audioSession.setActive(true)
27. Ͱ͸Έͳ͞Μ͜Ε͸Ͳ͏ͳΔͰ͠ΐ͏ʁ try audioSession.setCategory(.playback, mode: .videoRecording) try audioSession.setActive(true) 1. ໾ׂɿ • ΞϓϦͱOS/ϋʔυ΢ΣΞؒͷڮ౉͠ • ΞϓϦͷΦʔσΟΦͷҰൠతͳੑ࣭ΛOSʹ఻͑Δ 2. ಛ௃ɿ • ۩ମతͳಈ࡞΍ϋʔυ΢ΣΞͱͷৄࡉͳ΍ΓऔΓΛࢦఆ͢Δඞཁ͕ͳ͍ • ͦΕΒͷৄࡉͳ؅ཧ͸ΦʔσΟΦηογϣϯʹҕ೚͞ΕΔ 3. ϝϦοτɿ • OS͕ϢʔβʔͷΦʔσΟΦମݧΛ࠷దʹ؅ཧͰ͖Δ • ։ൃऀ͸௿Ϩϕϧͷ࣮૷ৄࡉΛؾʹ͢Δඞཁ͕ͳ͍ ͋Γ͑ͳ͍૊Έ߹ΘͤΛઃఆͰ͖ͪΌ͍·͢ɻ ΞϓϦར༻࣌ʹෆ౎߹͕͋Δ͜ͱ͕͋Γ·͢ɻ
28. ࣗ෼ͷΞϓϦͰͲΜͳ༻్Ͱ࢖͍͍͔ͨ ֬ೝͯ͠ద੾ͳઃఆΛ࢖͏ͱ҆શͰ͢Ͷ αϯϓϧΞϓϦ
29. https://developer.apple.com/documentation/avfaudio/avaudiosession/4485079-preferredmicrophoneinjectionmode?changes=latest_major ͓·͚
30. ·ͱΊ •AudioSessionͰΞϓϦͷΦʔσΟΦͷҰൠతͳੑ࣭ΛOSʹ఻ ͑Δ͜ͱͰɺ։ൃऀ͸ΦʔσΟΦϋʔυ΢ΣΞͱͷ۩ମΛઃఆ ͢ΔΛ͜ͱͳ͘Ի੠Λར༻Ͱ͖Δ •ࣗ෼ͷΞϓϦ͕ͲΜͳ༻్ͰԻ੠Λར༻͢Δͷ͔ཧղͯ͠ઃ ఆ͠·͠ΐ͏ •AudioSessionͷઃఆ͸͋Γ͑ͳ͍ύλʔϯͰ΋ઃఆͰ͖ͯ͠ ·͏ͷͰɺࣗ෼ͷΞϓϦͰ࢖͏ύλʔϯΛ༻ҙ͓ͯ͘͠ͱ҆શ ʹ࢖͑·͢