Changes in this update:
**Enhancements**
* Added support for [Bluetooth Interface 2.0](https://developer.amazon.com/docs/alexa/alexa-voice-service/bluetooth.html). This interface adds support for multiple simultaneous connections to Bluetooth peripherals.
* Added support for [Audio Focus Manager Library (AFML) Multi Activity](https://developer.amazon.com/docs/alexa/avs-device-sdk/sdk-interaction-model.html). This interface enhances the behavior of a device so it can handle more than one Activity per Channel.
* Added the `obfuscatePrivateData` logging method to help remove certain data from logs.
* Updated `MediaPlayerObserverInterface` to include metadata about playback states.
* Added SDK extension point. You can integrate CMake projects into the SDK without cloning those projects into a subdirectory.
**Bug fixes**
* Fixed Mac/OSX issue that caused an unresponsive Sample App when not connected to the internet.
* Fixed issue that prevented sample app from exiting various states.
* Fixed `UIManager` issue that caused an error in the logs when the device with built without the wake word enabled.
* Fixed volume issue that caused timers to ascend in volume when setting up ascending alarms.
* Fixed alert volume issue that caused any changes to the alert volume to notify observers.
* Fixed EQ issue where changes to the EQ band levels didn't notify observers.
* Fixed Bluetooth bug that caused short notification sounds from a connected phone to stop audio playback on the device.
**Known Issues**
* Build errors can occur on the Raspberry Pi due to incorrect linking of the atomic library. A suggested workaround is to add the following `set(CMAKE_CXX_LINK_FLAGS "${CMAKE_CXX_LINK_FLAGS} -latomic")` to the top most CMake file.
* The WebVTT dependency required for `captions` isn't supported for Windows/Android.
* Exiting from the setting option takes you back to the Options Menu directly. It doesn't provide a message to indicate that you're back in the main menu.
* Failing Unit Tests and AIP Unit tests are disabled on Windows
* `AudioInputProcessor` unit tests don't build on Windows when with the `-DCMAKE_BUILD_TYPE=DEBUG` cmake parameter.
* Music playback history isn't displayed in the Alexa app for certain account and device types.
* When using Gnu Compiler Collection 8+ (GCC 8+), `-Wclass-memaccess` triggers warnings. You can ignore these, they don't cause the build to fail.
* Android error `libDefaultClient.so not found` might occur. Resolve this by upgrading to ADB version 1.0.40.
* If a device loses a network connection, the lost connection status isn't returned though local TTS.
* ACL encounters issues if it receives audio attachments but doesn't consume them.
* Media streamed through Bluetooth might abruptly stop. To restart playback, resume the media in the source application or toggle next/previous.
* If a connected Bluetooth device is inactive, the Alexa app might indicates that audio is playing.
* The Bluetooth agent assumes that the Bluetooth adapter is always connected to a power source. Disconnecting from a power source during operation isn't yet supported.
* When using some products, interrupted Bluetooth playback might not resume if other content is locally streamed.
* `make integration` isn't available for Android. To run Android integration tests, manually upload the test binary and input file and run ADB.
* Alexa might truncate the beginning of speech when responding to text-to-speech (TTS) user events. This only impacts Raspberry Pi devices running Android Things with HDMI output audio.
* A reminder TTS message doesn't play if the sample app restarts and loses a network connection. Instead, the default alarm tone plays twice.
* `ServerDisconnectIntegratonTest` tests are disabled until they are updated to reflect new service behavior.
* The `DirectiveSequencerTest.test_handleBlockingThenImmediatelyThenNonBockingOnSameDialogId` test fails intermittently.
Changes in this update:
**Enhancements**
* New optional configuration for [EqualizerController](https://github.com/alexa/avs-device-sdk/blob/v1.10.0/Integration/AlexaClientSDKConfig.json#L154). The EqualizerController interface allows you to adjust equalizer settings on your product, such as decibel (dB) levels and modes.
* Added reference implementation of the EqualizerController for GStreamer-based (MacOS, Linux, and Raspberry Pi) and OpenSL ES-based (Android) MediaPlayers. Note: In order to use with Android, it must support OpenSL ES.
* New optional configuration for the [TemplateRuntime display card value](https://github.com/alexa/avs-device-sdk/blob/v1.10.0/Integration/AlexaClientSDKConfig.json#L144).
* A configuration file generator script, `genConfig.sh` is now included with the SDK in the **tools/Install** directory. `genConfig.sh` and it's associated arguments populate `AlexaClientSDKConfig.json` with the data required to authorize with LWA.
* Added Bluetooth A2DP source and AVRCP target support for Linux.
* Added Amazon for Business (A4B) support, which includes support for handling the new [RevokeAuthorization](https://developer.amazon.com/docs/alexa-voice-service/system.html#revokeauth) directive in the Settings interface. A new CMake option has been added to enable A4B within the SDK, `-DA4B`.
* Added locale support for IT and ES.
* The Alexa Communication Library (ACL), `CBLAUthDelegate`, and sample app have been enhanced to detect de-authorization using the new `z` command.
* Added `ExternalMediaPlayerObserver`, which receives notification of player state, track, and username changes.
* `HTTP2ConnectionInterface` was factored out of `HTTP2Transport` to enable unit testing of `HTTP2Transport` and re-use of `HTTP2Connection` logic.
**Bug Fixes**
* Fixed a bug in which `ExternalMediaPlayer` adapter playback wasn't being recognized by AVS.
* [Issue 973](https://github.com/alexa/avs-device-sdk/issues/973) - Fixed issues related to `AudioPlayer` where progress reports were being sent out of order or with incorrect offsets.
* An `EXPECTING`, state has been added to `DialogUXState` in order to handle `EXPECT_SPEECH` state for hold-to-talk devices.
* [Issue 948](https://github.com/alexa/avs-device-sdk/issues/948) - Fixed a bug in which the sample app was stuck in a listening state.
* Fixed a bug where there was a delay between receiving a `DeleteAlert` directive, and deleting the alert.
* [Issue 839](https://github.com/alexa/avs-device-sdk/issues/839) - Fixed an issue where speech was being truncated due to the `DialogUXStateAggregator` transitioning between a `THINKING` and `IDLE` state.
* Fixed a bug in which the `AudioPlayer` attempted to play when it wasn't in the `FOREGROUND` focus.
* `CapabilitiesDelegateTest` now works on Android.
* [Issue 950](https://github.com/alexa/avs-device-sdk/issues/950) - Improved Android Media Player audio quality.
* [Issue 908](https://github.com/alexa/avs-device-sdk/issues/908) - Fixed compile error on g++ 7.x in which includes were missing.
Changes in this update
- Added a getConfiguration() method to DirectiveHandlerInterface to register Capability Agents with Directive Sequencer.
- Fix race condition with reading attachments before a writer exists.
- Use of new Logging abstraction layer in modules - ADSL,AFML,ContextManager,AuthDelegate,AIP,KWD,Mediaplayer.
- Added ACL stream processing with Pause and redrive.
- Removed the dependency of ACL Library on Authdelegate.
- Added and interface to allow ACL to Add/Remove ConnectionStatusObserverInterface.
- Fixed compile errors in KittAi, DirectiveHandler and compiler warnings in AIP test.
- Corrected formatting on the files.
- Fixes for the following Github issues
- https://github.com/alexa/alexa-client-sdk/issues/21
- https://github.com/alexa/alexa-client-sdk/issues/25
Changes in this update:
- Added the SpeechSynthesizer, an implementation of the SpeechRecognizer capability agent.
- Implemented a reference MediaPlayer based on [GStreamer](https://gstreamer.freedesktop.org/) for audio playback.
- Added the MediaPlayerInterface that allows you to implement your own media player.
- Updated ACL to support asynchronous receipt of audio attachments from AVS.
Bug Fixes:
-Some intermittent unit test failures were fixed.
Known Issues:
-ACL's asynchronous receipt of audio attachments may manage resources poorly in scenarios where attachments are
received but not consumed.
- When an AttachmentReader does not deliver data for prolonged periods MediaPlayer may not resume playing the
delayed audio.
Michael Woo
Caleigh Minshall
Scott Heath
Mradula Nayak
Nikhila Krishnan