Hi, Here are few patches which should further improve our audio HAL. I've had them in my tree for couple of weeks and didn't notice any problems with streaming (tested on Nexus 4 and 5). Patches 1-3 are simple fixes/cleanup. Patch 4 changes L2CAP socket used in audio HAL to non-blocking (with proper polling on socket state) which enables more sophisticated audio stream handling introduced in subsequent patches. Patch 5 changes way in which socket congestion (due to any reason) is handled by simply skipping some audio data instead of trying to send data indefinitely. This helps to maintain synchronization between audio clock and data sent which is crucial for sleeping code to work properly. Patches 6 and 7 enables dynamic audio quality control (for SBC it's just bitpool adjustment) which enchances patch 5, i.e we not only skip audio data but also reduce audio quality and effectively reduce stream bandwidth which makes more possible that streaming will be smooth. Patches 4-7 are inspired by current PulseAudio implementation. Andrzej Kaczmarek (7): android/a2dp: Prefer master role on incoming connections android/hal-audio: Remove preset with 48000 frequency android/hal-audio: Add resume_endpoint helper android/hal-audio: Make audio socket non-blocking android/hal-audio: Resync audio when lagging too much android/hal-audio: Add support to control audio quality android/hal-audio: Adjust audio quality automatically android/a2dp.c | 1 + android/hal-audio.c | 320 +++++++++++++++++++++++++++++++++++++--------------- 2 files changed, 232 insertions(+), 89 deletions(-) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
