API changes

• Added new AAudio API to query MMAP policy (#2167)
• Added PCM offload support. This saves battery by ~30% when used (#2165)
• Added compressed format support like MP3 and AAC_LC (#2188)
• Added support for AAudioStream_getDeviceIds. Now you query if multiple output devices are connected (#2184)
• Added support for notifyWorkloadIncrease/Spike/Reset. These will help when you have workload increases (#2214)
• Added flushFromFrame API. This helps with flushing extra data with PCM offload (#2271)
• Added support for playback parameters for offload streams. This will allow apps to do speed/pitch shifts (#2279)
• Added a compile flag for not including flowgraph. This reduces the Oboe binary size by ~50% when used (#2302)
• Added support for partial data callback. This is useful as offload streams can have extremely large buffers (#2304)

OboeTester

• Made several improvements in the CPU Load Test (#2140, #2156, #2250)
• Added mixer attributes to device report (#2169)
• Added CPU info to device report (#2212)
• Fixed Auto Glitch test for non-MMAP devices (#2155)
• Fixed issue where large channel counts would result in overflows when downmixing (#2172)
• Added Spatialization behavior APIs (#2173)
• Added support for MP3 playback (#2189)
• Save all WAV files in Data Paths test to help with debugging (#2207)
• Added 2 new tests for testing audio workloads (#2199)
• Added package name and attribution tag (#2206)
• Fixed issue where output effects didn't work as expected (#2233)
• Added noise pulse for Tap to Tone (#2249)
• Test for both MMAP and MMAP shared in automated tests (#2253)
• Updated to Android 36 (#2257)
• Enabled background operation and foreground service by default (#2264)
• Added a way to simulate volume key presses (#2270)
• Added a test for reverse JNI (#2266)
• Fixed timeouts by using AlarmManager (#2290)
• Fixed UI issue where spinners show up even when it leaves the view (#2308)

Samples

• Added new PowerPlay sample to showcase how to use PCM Offload to save battery by ~30% (#2197)
• Updated to Android 36 (#2257)