| Android audio history | |
| === | |
| A list of important audio features, bugs, fixes and workarounds for various Android versions. | |
| ### 10.0 Q - API 29 | |
| - Fixed: Setting capacity of Legacy input streams < 4096 can prevent use of FAST path. https://github.com/google/oboe/issues/183 | |
| - Add InputPreset:VoicePerformance for low latency recording. | |
| ### 9.0 Pie - API 28 (August 6, 2018) | |
| - AAudio adds support for setUsage(), setSessionId(), setContentType(), setInputPreset() for builders. | |
| - Regression bug: [AAudio] Headphone disconnect event not fired for MMAP streams. https://github.com/google/oboe/issues/252 | |
| - 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 | |
| ### 8.1 Oreo MR1 - API 27 | |
| - Oboe uses AAudio by default. | |
| - AAudio MMAP data path enabled on Pixel devices. PerformanceMode::Exclusive supported. | |
| - Fixed: [AAudio] RefBase issue | |
| - Fixed: Requesting a stereo recording stream can result in sub-optimal latency. | |
| ### 8.0 Oreo - API 26 (August 21, 2017) | |
| - [AAudio API introduced](https://developer.android.com/ndk/guides/audio/aaudio/aaudio) | |
| - 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. | |
| https://github.com/google/oboe/issues/40 | |
| - Bug: Requesting a stereo recording stream can result in sub-optimal latency. [Details](https://issuetracker.google.com/issues/68666622) | |
| ### 7.1 Nougat MR1 - API 25 | |
| - OpenSL adds supports for setting and querying of PerformanceMode. | |
| ### 7.0 Nougat - API 24 (August 22, 2016) | |
| - OpenSL method `acquireJavaProxy` added, which allows the Java AudioTrack object associated with playback to be obtained (which allows underrun count). | |
| ### 6.0 Marshmallow - API 23 (October 5, 2015) | |
| - Floating point recording supported. But it does not allow a FAST "low latency" path. | |
| - [MIDI API introduced](https://developer.android.com/reference/android/media/midi/package-summary) | |
| - Sound output is broken on the API 23 emulator | |
| ### 5.0 Lollipop - API 21 (November 12, 2014) | |
| - Floating point playback supported. | |