audiopolicy: allows to fallback or not on default strategy/group
When attributes does not match a group or strategy, it falls back on
respectively default group or strategy.
This CL allows to control whether fallback shall be done or not.
It allows for example to detect orphans attributes and prevent from
overwritting volume for example.
Bug: 179759299
Test: make
Signed-off-by: Francois Gaffie <francois.gaffie@renault.com>
Change-Id: Ieeeab48ca3ec2b031b7a99e2e7ab26d2e4d70535
diff --git a/services/audiopolicy/engine/interface/EngineInterface.h b/services/audiopolicy/engine/interface/EngineInterface.h
index a9b536b..f0a01d3 100644
--- a/services/audiopolicy/engine/interface/EngineInterface.h
+++ b/services/audiopolicy/engine/interface/EngineInterface.h
@@ -110,11 +110,12 @@
* Get the strategy selected for a given audio attributes.
*
* @param[in] audio attributes to get the selected @product_strategy_t followed by.
- *
+ * @param fallbackOnDefault if true, will return the fallback strategy if the attributes
+ * are not explicitly assigned to a given strategy.
* @return @product_strategy_t to be followed.
*/
virtual product_strategy_t getProductStrategyForAttributes(
- const audio_attributes_t &attr) const = 0;
+ const audio_attributes_t &attr, bool fallbackOnDefault = true) const = 0;
/**
* @brief getOutputDevicesForAttributes retrieves the devices to be used for given
@@ -271,19 +272,25 @@
* @brief getVolumeGroupForAttributes gets the appropriate volume group to be used for a given
* Audio Attributes.
* @param attr to be considered
+ * @param fallbackOnDefault if true, will return the fallback volume group if the attributes
+ * are not associated to any volume group.
* @return volume group associated to the given audio attributes, default group if none
* applicable, VOLUME_GROUP_NONE if no default group defined.
*/
- virtual volume_group_t getVolumeGroupForAttributes(const audio_attributes_t &attr) const = 0;
+ virtual volume_group_t getVolumeGroupForAttributes(
+ const audio_attributes_t &attr, bool fallbackOnDefault = true) const = 0;
/**
* @brief getVolumeGroupForStreamType gets the appropriate volume group to be used for a given
* legacy stream type
* @param stream type to be considered
+ * @param fallbackOnDefault if true, will return the fallback volume group if the stream type
+ * is not associated to any volume group.
* @return volume group associated to the given stream type, default group if none applicable,
* VOLUME_GROUP_NONE if no default group defined.
*/
- virtual volume_group_t getVolumeGroupForStreamType(audio_stream_type_t stream) const = 0;
+ virtual volume_group_t getVolumeGroupForStreamType(
+ audio_stream_type_t stream, bool fallbackOnDefault = true) const = 0;
/**
* @brief listAudioVolumeGroups introspection API to get the Audio Volume Groups, aka