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**
- Added support for SpeechSynthesizer v.1.2 which includes the new `playBehaviour` directive. For more information, see [SpeechSynthesizer v1.2](https://github.com/alexa/avs-device-sdk/wiki/SpeechSynthesizer-Interface-v1.2).
- Added support for pre-buffering in [AudioPlayer](https://alexa.github.io/avs-device-sdk/classalexa_client_s_d_k_1_1capability_agents_1_1audio_player_1_1_audio_player.html). You can optionally choose the number of instances MediaPlayer uses in the [AlexaClientSDKconfig.json](https://github.com/alexa/avs-device-sdk/blob/master/Integration/AlexaClientSDKConfig.json). Important: the contract for [MediaPlayerInterface](https://alexa.github.io/avs-device-sdk/classalexa_client_s_d_k_1_1avs_common_1_1utils_1_1media_player_1_1_media_player_interface.html) has changed. You must now make sure that the `SourceId` value returned by `setSource()` is unique across all instances.
- AudioPlayer is now licensed under the Amazon Software License instead of the Apache Software License.
**Bug Fixes**
- Fixed Android issue that caused the build script to ignore PKG_CONFIG_PATH. This sometimes caused the build to use a preinstalled dependency instead of the specific version downloaded by the Android script (e.g - openssl).
- Fixed Android issue that prevented the Sample app from running at the same time as other applications using the microphone. Android doesn't inherently allow two applications to use the microphone. Pressing the mute button now temporarily stops Alexa from accessing the microphone.
- Added 'quit' (– q) to the settings sub menu.
- Fixed outdated dependencies issue in the Windows install script.
- Fixed reminders issue that caused Notification LEDs to stay on, even after dismissing the alert.
**Known Issues**
* 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 via local TTS.
* ACL encounters issues if it receives audio attachments but doesn't consume them.
* `SpeechSynthesizerState` uses `GAINING_FOCUS` and `LOSING_FOCUS` as a workaround for handling intermediate states.
* Media steamed 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.
* Bluetooth initialization must complete before connecting devices, otherwise devices are ignored.
* The `DirectiveSequencerTest.test_handleBlockingThenImmediatelyThenNonBockingOnSameDialogId` test fails intermittently.
* On some devices, Alexa gets stuck in a permanent listening state. Pressing `t` and `h` in the Sample App doesn't exit the listening state.
* Exiting the `settings` menu doesn't provide a message to indicate that you are back in the main menu.
Changes in this update:
**Enhancements**
* Added `SystemSoundPlayer` to [ApplicationUtilities](https://alexa.github.io/avs-device-sdk/namespacealexa_client_s_d_k_1_1application_utilities.html). `SystemSoundPlayer` is a new class that plays pre-defined sounds. Sounds currently supported include the wake word notification and the end of speech tone. This change is internal and you don't need to update your code.
* Removed [Echo Spatial Perception (ESP)](https://developer.amazon.com/blogs/alexa/post/042be85c-5a62-4c55-a18d-d7a82cf394df/esp-moves-to-the-cloud-for-alexa-enabled-devices) functionality from the Alexa Voice Service (AVS) device SDK. Make sure you download and test your devices using the new AVS SDK sample app. If you're using an older version of the sample app, manually remove any references to ESP or errors occur during compile.
* Added `onNotificationReceived` to `NotificationsObserverInterface`. `onNotificationReceived` broadcasts when `NotificationsObserverInterface` receives a new notification, instead of only sending the indicator state. This is important if you support a feature that requires a distinct signal for each notification received. See [NotificationsObserverInterface](https://alexa.github.io/avs-device-sdk/classalexa_client_s_d_k_1_1avs_common_1_1sdk_interfaces_1_1_notifications_observer_interface.html) for more details.
* Added support for [Multilingual Mode](https://developer.amazon.com/docs/alexa-voice-service/system.html#localecombinations). With this enabled, Alexa automatically detects what language a user speaks by analyzing the spoken wake word and proceeding utterances. Once Alexa identifies the language, all corresponding responses are in the same language. The current supported language pairs are:
- `[ "en-US", "es-US" ]`
- `[ "es-US", "en-US" ]`
- `[ "en-IN", "hi-IN" ]`
- `[ "hi-IN", "en-IN" ]`
- `[ "en-CA", "fr-CA" ]`
- `[ "fr-CA", "en-CA" ]`
<br/> **IMPORTANT**: Specify the locales your device supports in the [localeCombinations](https://developer.amazon.com/docs/alexa-voice-service/system.html#localecombinations) field in AlexaClientSDKConfig.json. This field can't be empty. If you don't set these values, the sample app fails to run.
* Added two new system settings, [Timezone](https://developer.amazon.com/docs/alexa-voice-service/system.html#settimezone) and [Locale](https://developer.amazon.com/docs/alexa-voice-service/system.html#locales).
- Timezone: For example, you can set the `defaultTimezone` to `America/Vancouver`. If you don't set a value, `GMT` is set as the default value. If you set a new timezone, make sure that your AVS system settings and default timezone stay in sync. To handle this, use the new class `SystemTimeZoneInterface`. See [System Interface > SetTimeZone](https://developer.amazon.com/docs/alexa-voice-service/system.html#settimezone) for more information.
- Locale: For example, you can set `defaultLocale` to `en-GB`, instead of the default `en-US`.
* The [SpeechRecognizer](https://developer.amazon.com/docs/alexa-voice-service/speechrecognizer.html) interface now supports the following functionalities.
- Change wake word (`Alexa` supported for now).
- Toggle start of request tone on/off.
- Toggle End of request tone on/off.
* Deprecated the [CapabilityAgents](https://alexa.github.io/avs-device-sdk/classalexa_client_s_d_k_1_1avs_common_1_1avs_1_1_capability_agent.html) `Settings{…}` library. `Settings {…}` now maps to an interface that's no longer supported. You might need to update your code to handle these changes. Read [Settings Interface](https://developer.amazon.com/docs/alexa-voice-service/per-interface-settings.html) for more details.
* Added support for three new locals: Spanish - United States (ES_US), Hindi - India (HI_IN), and Brazilian - Portuguese (PT_BR).
* Linked the atomic library to the sample app to prevent build errors on Raspberry Pi.
**Bug Fixes**
* Fixed resource leaking in [EqualizerCapabilityAgent](https://alexa.github.io/avs-device-sdk/classalexa_client_s_d_k_1_1capability_agents_1_1equalizer_1_1_equalizer_capability_agent.html) after engine shutdown.
* [Issue 1391:](https://github.com/alexa/avs-device-sdk/pull/1391) Fixed an issue where [SQLiteDeviceSettingsStorage::open](https://alexa.github.io/avs-device-sdk/classalexa_client_s_d_k_1_1settings_1_1storage_1_1_s_q_lite_device_setting_storage.html#a7733e56145916f7ff265c5c950add492) tries to acquire a mutex twice, resulting in deadlock.
* [Issue 1468:](https://github.com/alexa/avs-device-sdk/issues/1468) Fixed a bug in [AudioPlayer::cancelDirective](https://alexa.github.io/avs-device-sdk/classalexa_client_s_d_k_1_1capability_agents_1_1audio_player_1_1_audio_player.html#a2c710c16f3627790fcc3238d34da9361) that causes a crash.
* Fixed Windows install script that caused the sample app build to fail - removed pip, flask, requests, and commentjson dependencies from the mingw.sh helper script.
* Fixed issue: notifications failed to sync upon device initialization. For example, let's say you had two devices - one turned on and the other turned off. After clearing the notification on the first device, it still showed up on the second device after turning it on.
* Fixed issue: barging in on a reminder caused it to stick in an inconsistent state, blocking subsequent reminders. For example, if a reminder was going off and you interrupted it, the reminder would get persist indefinitely. You could schedule future reminders, but they wouldn't play. Saying “Alexa stop” or rebooting the device fixed the “stuck” reminder.
**Known Issues**
* 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 via local TTS.
* ACL encounters issues if it receives audio attachments but doesn't consume them.
* `SpeechSynthesizerState` uses `GAINING_FOCUS` and `LOSING_FOCUS` as a workaround for handling intermediate states.
* Media steamed 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.
* Bluetooth initialization must complete before connecting devices, otherwise devices are ignored.
* The `DirectiveSequencerTest.test_handleBlockingThenImmediatelyThenNonBockingOnSameDialogId` test fails intermittently.
Changes in this update:
**Enhancements**
* AudioPlayer can now pre-buffer audio tracks in the Pre-Handle stage.
**Bug Fixes**
* Fixed an issue in the SQLite wrapper code where a `SQLiteStatement` caused a memory corruption issue.
* Fixed a race condition in SpeechSynthesizer that caused crashes.
* Fixed a `cmake` issue that specifies a dependency for Bluetooth incorrectly.
* Fixed a bug that caused Bluetooth playback to start automatically.
* Changed `supportedOperations` from a vector to a set in `ExternalMediaAdapterInterface`.
* Corrected an issue where a `VolumeChanged` event had previously been sent when the volume was unchanged after `setVolume` or `adjustVolume` had been called locally.
* Fixed issue with `IterativePlaylistParser` that prevented live stations on TuneIn from playing on Android.
* Corrected the spelling of "UNINITIALIZED".
**Known Issues**
* Music playback history isn't being displayed in the Alexa app for certain account and device types.
* On GCC 8+, issues related to `-Wclass-memaccess` will trigger warnings. However, this won't cause the build to fail and these warnings can be ignored.
* Android error ("libDefaultClient.so" not found) can be resolved by upgrading to ADB version 1.0.40
* When network connection is lost, lost connection status is not returned via local TTS.
* `ACL` may encounter issues if audio attachments are received but not consumed.
* `SpeechSynthesizerState` currently uses `GAINING_FOCUS` and `LOSING_FOCUS` as a workaround for handling intermediate state. These states may be removed in a future release.
* The Alexa app doesn't always indicate when a device is successfully connected via Bluetooth.
* Connecting a product to streaming media via Bluetooth will sometimes stop media playback within the source application. Resuming playback through the source application or toggling next/previous will correct playback.
* When a source device is streaming silence via Bluetooth, the Alexa app indicates that audio content is streaming.
* The Bluetooth agent assumes that the Bluetooth adapter is always connected to a power source. Disconnecting from a power source during operation is not yet supported.
* On some products, interrupted Bluetooth playback may not resume if other content is locally streamed.
* `make integration` is currently not available for Android. In order to run integration tests on Android, you'll need to manually upload the test binary file along with any input file. At that point, the adb can be used to run the integration tests.
* On Raspberry Pi running Android Things with HDMI output audio, beginning of speech is truncated when Alexa responds to user text-to-speech (TTS).
* When the sample app is restarted and the network connection is lost, the Reminder TTS message does not play. Instead, the default alarm tone will play twice.
* `ServerDisconnectIntegratonTest` tests have been disabled until they can be updated to reflect new service behavior.
* Devices connected before the Bluetooth CA is initialized are ignored.
* The `DirectiveSequencerTest.test_handleBlockingThenImmediatelyThenNonBockingOnSameDialogId` test fails intermittently.
Changes in this update:
**Bug Fixes**
* Fixed a bug where the same URL was being requested twice when streaming iHeartRadio. Now, a single request is sent.
* Corrected pause/resume handling in `ProgressTimer` so that extra `ProgressReportDelayElapsed` events are not sent to AVS.
**Known Issues**
* Music playback history isn't being displayed in the Alexa app for certain account and device types.
* On GCC 8+, issues related to `-Wclass-memaccess` will trigger warnings. However, this won't cause the build to fail and these warnings can be ignored.
* Android error ("libDefaultClient.so" not found) can be resolved by upgrading to ADB version 1.0.40
* When network connection is lost, lost connection status is not returned via local TTS.
* `ACL` may encounter issues if audio attachments are received but not consumed.
* `SpeechSynthesizerState` currently uses `GAINING_FOCUS` and `LOSING_FOCUS` as a workaround for handling intermediate state. These states may be removed in a future release.
* The Alexa app doesn't always indicate when a device is successfully connected via Bluetooth.
* Connecting a product to streaming media via Bluetooth will sometimes stop media playback within the source application. Resuming playback through the source application or toggling next/previous will correct playback.
* When a source device is streaming silence via Bluetooth, the Alexa app indicates that audio content is streaming.
* The Bluetooth agent assumes that the Bluetooth adapter is always connected to a power source. Disconnecting from a power source during operation is not yet supported.
* On some products, interrupted Bluetooth playback may not resume if other content is locally streamed.
* `make integration` is currently not available for Android. In order to run integration tests on Android, you'll need to manually upload the test binary file along with any input file. At that point, the adb can be used to run the integration tests.
* On Raspberry Pi running Android Things with HDMI output audio, beginning of speech is truncated when Alexa responds to user text-to-speech (TTS).
* When the sample app is restarted and the network connection is lost, the Reminder TTS message does not play. Instead, the default alarm tone will play twice.
Changes in this update:
**Enhancements**
* Support was added for the `fr_CA` locale.
* The Executor has been optimized to run a single thread when there are active job in the queue, and to remain idle when there are not active jobs.
* An additional parameter of `alertType` has been added to the Alerts capability agent. This will allow observers of alerts to know the type of alert being delivered.
* Support for programmatic unload and load of PulseAudio Bluetooth modules was added. To enable this feature, there is a [new CMake option](https://github.com/alexa/avs-device-sdk/wiki/CMake-parameters#bluetooth): `BLUETOOTH_BLUEZ_PULSEAUDIO_OVERRIDE_ENDPOINTS`. Note that [libpulse-dev is a required dependency](https://github.com/alexa/avs-device-sdk/wiki/Dependencies#bluetooth) of this feature.
* An observer interface was added for when an active Bluetooth device connects and disconnects.
* The `BluetoothDeviceManagerInterface` instantiation was moved from `DefaultClient` to `SampleApp` to allow applications to override it.
* The `MediaPlayerInterface` now supports repeating playback of URL sources.
* The Kitt.AI wake word engine (WWE) is now compatible with GCC5+.
* Stop of ongoing alerts, management of MessageObservers, and management of CallStateObservers have been exposed through DefaultClient.
**Bug Fixes**
* [Issue 953](https://github.com/alexa/avs-device-sdk/issues/953) - The `MediaPlayerInterface` requirement that callbacks not be made upon a callers thread has been removed.
* [Issue 1136](https://github.com/alexa/avs-device-sdk/issues/1136) - Added a missing default virtual destructor.
* [Issue 1140](https://github.com/alexa/avs-device-sdk/issues/1140) - Fixed an issue where DND states were not synchronized to the AVS cloud after device reset.
* [Issue 1143](https://github.com/alexa/avs-device-sdk/issues/1143) - Fixed an issue in which the SpeechSynthesizer couldn't enter a sleeping state.
* [Issue 1183](https://github.com/alexa/avs-device-sdk/issues/1183) - Fixed an issue where alarm is not sounding for certain timezones
* Changing an alert's volume from the Alexa app now works when an alert is playing.
* Added missing shutdown handling for ContentDecrypter to prevent the `Stop` command from triggering a crash when SAMPLE-AES encrypted content was streaming.
* Fixed a bug where if the Notifications database is empty, due to a crash or corruption, the SDK initialization process enters an infinite loop when it retries to get context from the Notifications capability agent.
* Fixed a race condition that caused `AlertsRenderer` observers to miss notification that an alert has been completed.
**Known Issues**
* `PlaylistParser` and `IterativePlaylistParser` generate two HTTP requests (one to fetch the content type, and one to fetch the audio data) for each audio stream played.
* Music playback history isn't being displayed in the Alexa app for certain account and device types.
* On GCC 8+, issues related to `-Wclass-memaccess` will trigger warnings. However, this won't cause the build to fail and these warnings can be ignored.
* Android error ("libDefaultClient.so" not found) can be resolved by upgrading to ADB version 1.0.40
* When network connection is lost, lost connection status is not returned via local TTS.
* `ACL` may encounter issues if audio attachments are received but not consumed.
* `SpeechSynthesizerState` currently uses `GAINING_FOCUS` and `LOSING_FOCUS` as a workaround for handling intermediate state. These states may be removed in a future release.
* The Alexa app doesn't always indicate when a device is successfully connected via Bluetooth.
* Connecting a product to streaming media via Bluetooth will sometimes stop media playback within the source application. Resuming playback through the source application or toggling next/previous will correct playback.
* When a source device is streaming silence via Bluetooth, the Alexa app indicates that audio content is streaming.
* The Bluetooth agent assumes that the Bluetooth adapter is always connected to a power source. Disconnecting from a power source during operation is not yet supported.
* On some products, interrupted Bluetooth playback may not resume if other content is locally streamed.
* `make integration` is currently not available for Android. In order to run integration tests on Android, you'll need to manually upload the test binary file along with any input file. At that point, the adb can be used to run the integration tests.
* On Raspberry Pi running Android Things with HDMI output audio, beginning of speech is truncated when Alexa responds to user text-to-speech (TTS).
* When the sample app is restarted and network connection is lost, Reminder TTS does not play. Instead, the default alarm tone will play twice.
Changes in this update:
**Enhancements**
* Added support for the new Alexa [DoNotDisturb](https://developer.amazon.com/docs/alexa-voice-service/donotdisturb.html) interface, which enables users to toggle the do not disturb (DND) function on their Alexa built-in products.
* The SDK now supports [Opus](https://opus-codec.org/license/) encoding, which is optional. To enable Opus, you must [set the CMake flag to `-DOPUS=ON`](https://github.com/alexa/avs-device-sdk/wiki/Build-Options#Opus-encoding), and include the [libopus library](https://github.com/alexa/avs-device-sdk/wiki/Dependencies#core-dependencies) dependency in your build.
* The MediaPlayer reference implementation has been expanded to support the SAMPLE-AES and AES-128 encryption methods for HLS streaming.
* AES-128 encryption is dependent on libcrypto, which is part of the required openSSL library, and is enabled by default.
* To enable [SAMPLE-AES](https://github.com/alexa/avs-device-sdk/wiki/Dependencies#core-dependencies/Enable-SAMPLE-AES-decryption) encryption, you must set the `-DSAMPLE_AES=ON` in your CMake command, and include the [FFMPEG](https://github.com/alexa/avs-device-sdk/wiki/Dependencies#core-dependencies/Enable-SAMPLE-AES-decryption) library dependency in your build.
* A new configuration for [deviceSettings](https://github.com/alexa/avs-device-sdk/blob/v1.11.0/Integration/AlexaClientSDKConfig.json#L59) has been added.This configuration allows you to specify the location of the device settings database.
* Added locale support for es-MX.
**Bug Fixes**
* Fixed an issue where music wouldn't resume playback in the Android app.
* Now all equalizer capabilities are fully disabled when equalizer is turned off in configuration file. Previously, devices were unconditionally required to provide support for equalizer in order to run the SDK.
* [Issue 1106](https://github.com/alexa/avs-device-sdk/issues/1106) - Fixed an issue in which the `CBLAuthDelegate` wasn't using the correct timeout during request refresh.
* [Issue 1128](https://github.com/alexa/avs-device-sdk/issues/1128) - Fixed an issue in which the `AudioPlayer` instance persisted at shutdown, due to a shared dependency with the `ProgressTimer`.
* Fixed in issue that occurred when a connection to streaming content was interrupted, the SDK did not attempt to resume the connection, and appeared to assume that the content had been fully downloaded. This triggered the next track to be played, assuming it was a playlist.
* [Issue 1040](https://github.com/alexa/avs-device-sdk/issues/1040) - Fixed an issue where alarms would continue to play after user barge-in.
**Known Issues**
* `PlaylistParser` and `IterativePlaylistParser` generate two HTTP requests (one to fetch the content type, and one to fetch the audio data) for each audio stream played.
* Music playback history isn't being displayed in the Alexa app for certain account and device types.
* On GCC 8+, issues related to `-Wclass-memaccess` will trigger warnings. However, this won't cause the build to fail, and these warnings can be ignored.
* In order to use Bluetooth source and sink PulseAudio, you must manually load and unload PulseAudio modules after the SDK starts.
* The `ACL` may encounter issues if audio attachments are received but not consumed.
* `SpeechSynthesizerState` currently uses `GAINING_FOCUS` and `LOSING_FOCUS` as a workaround for handling intermediate state. These states may be removed in a future release.
* The Alexa app doesn't always indicate when a device is successfully connected via Bluetooth.
* Connecting a product to streaming media via Bluetooth will sometimes stop media playback within the source application. Resuming playback through the source application or toggling next/previous will correct playback.
* When a source device is streaming silence via Bluetooth, the Alexa app indicates that audio content is streaming.
* The Bluetooth agent assumes that the Bluetooth adapter is always connected to a power source. Disconnecting from a power source during operation is not yet supported.
* On some products, interrupted Bluetooth playback may not resume if other content is locally streamed.
* `make integration` is currently not available for Android. In order to run integration tests on Android, you'll need to manually upload the test binary file along with any input file. At that point, the adb can be used to run the integration tests.
* On Raspberry Pi running Android Things with HDMI output audio, beginning of speech is truncated when Alexa responds to user TTS.
* When the sample app is restarted and network connection is lost, alerts don't play.
* When network connection is lost, lost connection status is not returned via local Text-to Speech (TTS).
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:
Enhancements
Added Android SDK support, which includes new implementations of the MediaPlayer, audio recorder, and logger.
Added the InteractionModel interface, which enables Alexa Routines.
Optional configuration changes have been introduced. Now a network interface can be specified to connect to the SDK via curl.
Build options can be configured to support Android.
Added GUI 1.1 support. The PlaybackController has been extended to support new control functionality, and the System interface has been updated to support SoftwareInfo.
Bug Fixes
Installation script execution time has been reduced. Now a single branch clone is used, such as the master branch.
Issue 846 - Fixed a bug where audio stuttered on slow network connections.
Removed the SpeakerManager constructor check for non-zero speakers.
Issue 891 - Resolved incorrect offset in the PlaybackFinished event.
Issue 727 - Fixed an issue where the sample app behaved erratically upon network disconnection/reconnection.
Issue 910 - Fixed a GCC 8+ compilation issue. Note: issues related to -Wclass-memaccess will still trigger warnings, but won't fail compilation.
Issue 871 Issue 880 - Fixed compiler warnings.
Fixed a bug where Ted Talks would not stream via TuneIn.
Fixed an issue where the PryonLiteKeywordDetector would not restart.
Fixed an issue where PlaybackStutterStarted and PlaybackStutterFinished events were not being sent due to a missing Gstreamer queue element.
Fixed a bug where the CapabilitiesDelegate database was not being cleared upon logout.
Fixed in issue that caused the following compiler warning “class has virtual functions but non-virtual destructor”.
Fixed a bug where BlueZDeviceManager was not properly destroyed.
Fixed a bug that occurred when the initializer list was converted to std::unordered_set.
Fixed a build error that occurred when building with BUILD_TESTING=Off.
Known Issues
* The ACL may encounter issues if audio attachments are received but not consumed.
* SpeechSynthesizerState currently uses GAINING_FOCUS and LOSING_FOCUS as a workaround for handling intermediate state. These states may be removed in a future release.
* The Alexa app doesn't always indicate when a device is successfully connected via Bluetooth.
* Connecting a product to streaming media via Bluetooth will sometimes stop media playback within the source application. Resuming playback through the source application or toggling next/previous will correct playback.
* When a source device is streaming silence via Bluetooth, the Alexa companion app indicates that audio content is streaming.
* The Bluetooth agent assumes that the Bluetooth adapter is always connected to a power source. Disconnecting from a power source during operation is not yet supported.
* On some products, interrupted Bluetooth playback may not resume if other content is locally streamed.
* On Raspberry Pi, when streaming audio via Bluetooth, sometimes the audio stream stutters.
* These CapabilitiesDelegateTest tests have been temporarily disabled to prevent build errors for the Android build: CapabilitiesDelegateTest.withCapabilitiesHappyCase, CapabilitiesDelegateTest.republish, CapabilitiesDelegateTest.testClearData.
* make integration is currently not available for Android. In order to run integration tests on Android, you'll need to manually upload the test binary file along with the any input file. At that point, the adb can be used to run the integration tests.
* On Raspberry Pi running Android Things with HDMI output audio, beginning of speech is truncated when Alexa responds to user TTS.
* Spotify does not completely shut down when the sample app quits.
Michael Woo
Alexandre Mendonca
Caleigh Minshall
Sam Coulter
Kenneth Chan
Mahesh Velegonda
David Henry
Aurelio Akira Mello Matsui
Keith Huang
Scott Heath