Android audio history

** work in progress **

A list of important audio features, bugs, fixes and workarounds for various Android versions.

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

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

8.0 Oreo - API 26 (August 21, 2017)

• AAudio API introduced
• Bug: RefBase issue causes crash after stream closed. This why AAudio is not recommended for 8.0. https://github.com/google/oboe/issues/40

7.1 Nougat MR1 - API 25

• OpenSL adds supports for setting and querying of PerformanceMode.

7.0 Nougat - API 24

• 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.
• MIDI API introduced

5.0 Lollipop - API 21 (November 12, 2014)

• Floating point playback supported.