1Android audio history 2=== 3 4A list of important audio features, bugs, fixes and workarounds for various Android versions. [(List of all Android Versions)](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) 5 6### 10.0 Q - API 29 7- Fixed: Setting capacity of Legacy input streams < 4096 can prevent use of FAST path. https://github.com/google/oboe/issues/183. also ag/7116429 8- Add InputPreset:VoicePerformance for low latency recording. 9 10### 9.0 Pie - API 28 (August 6, 2018) 11- AAudio adds support for setUsage(), setSessionId(), setContentType(), setInputPreset() for builders. 12- Regression bug: [AAudio] Headphone disconnect event not fired for MMAP streams. https://github.com/google/oboe/issues/252 13- AAudio input streams with LOW_LATENCY will open a FAST path using INT16 and convert the data to FLOAT if needed. See: https://github.com/google/oboe/issues/276 14 15### 8.1 Oreo MR1 - API 27 16- Oboe uses AAudio by default. 17- AAudio MMAP data path enabled on Pixel devices. PerformanceMode::Exclusive supported. 18- Fixed: [AAudio] RefBase issue 19- Fixed: Requesting a stereo recording stream can result in sub-optimal latency. 20 21### 8.0 Oreo - API 26 (August 21, 2017) 22- [AAudio API introduced](https://developer.android.com/ndk/guides/audio/aaudio/aaudio) 23- Bug: RefBase issue causes crash after stream closed. This why AAudio is not recommended for 8.0. Oboe will use OpenSL ES for 8.0 and earlier. 24 https://github.com/google/oboe/issues/40 25- Bug: Requesting a stereo recording stream can result in sub-optimal latency. [Details](https://issuetracker.google.com/issues/68666622) 26 27### 7.1 Nougat MR1 - API 25 28- OpenSL adds supports for setting and querying of PerformanceMode. 29 30### 7.0 Nougat - API 24 (August 22, 2016) 31- OpenSL method `acquireJavaProxy` added, which allows the Java AudioTrack object associated with playback to be obtained (which allows underrun count). 32 33### 6.0 Marshmallow - API 23 (October 5, 2015) 34- Floating point recording supported. But it does not allow a FAST "low latency" path. 35- [MIDI API introduced](https://developer.android.com/reference/android/media/midi/package-summary) 36- Sound output is broken on the API 23 emulator 37 38### 5.0 Lollipop - API 21 (November 12, 2014) 39- Floating point playback supported. 40 41 42 43 44 45