audiopolicy: engine: Add Volume Groups to common Engine
This CL adds the concept of Volume Group to the engine.
It generalizes the volume management today controled by stream types
and hard coded into AOSP.
The goal is to control the volume per attributes, being able to define
a group of attributes that follow the same volume curves.
It intends to replace the concept of aliases in AudioService.
Bug: 124767636
Test: build
Change-Id: Icd079374cc1680d074b01836eca0bceb0b0c5247
Signed-off-by: François Gaffie <francois.gaffie@renault.com>
diff --git a/media/libaudioclient/AudioAttributes.cpp b/media/libaudioclient/AudioAttributes.cpp
index 0f327cf..1ee6930 100644
--- a/media/libaudioclient/AudioAttributes.cpp
+++ b/media/libaudioclient/AudioAttributes.cpp
@@ -43,7 +43,7 @@
strcpy(mAttributes.tags, "");
}
mStreamType = static_cast<audio_stream_type_t>(parcel->readInt32());
- mGroupId = parcel->readUint32();
+ mGroupId = static_cast<volume_group_t>(parcel->readUint32());
return NO_ERROR;
}
@@ -60,7 +60,7 @@
parcel->writeUtf8AsUtf16(mAttributes.tags);
}
parcel->writeInt32(static_cast<int32_t>(mStreamType));
- parcel->writeUint32(mGroupId);
+ parcel->writeUint32(static_cast<uint32_t>(mGroupId));
return NO_ERROR;
}
diff --git a/media/libaudioclient/include/media/AudioAttributes.h b/media/libaudioclient/include/media/AudioAttributes.h
index edf26eb..0a35e9e 100644
--- a/media/libaudioclient/include/media/AudioAttributes.h
+++ b/media/libaudioclient/include/media/AudioAttributes.h
@@ -17,6 +17,7 @@
#pragma once
+#include <media/AudioCommonTypes.h>
#include <system/audio.h>
#include <system/audio_policy.h>
#include <binder/Parcelable.h>
@@ -28,7 +29,7 @@
public:
AudioAttributes() = default;
AudioAttributes(const audio_attributes_t &attributes) : mAttributes(attributes) {}
- AudioAttributes(uint32_t groupId,
+ AudioAttributes(volume_group_t groupId,
audio_stream_type_t stream,
const audio_attributes_t &attributes) :
mAttributes(attributes), mStreamType(stream), mGroupId(groupId) {}
@@ -39,7 +40,7 @@
status_t writeToParcel(Parcel *parcel) const override;
audio_stream_type_t getStreamType() const { return mStreamType; }
- uint32_t getGroupId() const { return mGroupId; }
+ volume_group_t getGroupId() const { return mGroupId; }
private:
audio_attributes_t mAttributes = AUDIO_ATTRIBUTES_INITIALIZER;
@@ -53,7 +54,7 @@
* @brief mGroupId: for future volume management, define groups within a strategy that follows
* the same curves of volume (extension of stream types to manage volume)
*/
- uint32_t mGroupId = 0;
+ volume_group_t mGroupId = VOLUME_GROUP_NONE;
};
} // namespace android
diff --git a/media/libaudioclient/include/media/AudioCommonTypes.h b/media/libaudioclient/include/media/AudioCommonTypes.h
index 5188da1..8e446ea 100644
--- a/media/libaudioclient/include/media/AudioCommonTypes.h
+++ b/media/libaudioclient/include/media/AudioCommonTypes.h
@@ -27,7 +27,7 @@
const product_strategy_t PRODUCT_STRATEGY_NONE = static_cast<product_strategy_t>(-1);
using AttributesVector = std::vector<audio_attributes_t>;
-using StreamTypes = std::vector<audio_stream_type_t>;
+using StreamTypeVector = std::vector<audio_stream_type_t>;
constexpr bool operator==(const audio_attributes_t &lhs, const audio_attributes_t &rhs)
{
@@ -38,5 +38,9 @@
{
return !(lhs==rhs);
}
+
+enum volume_group_t : uint32_t;
+static const volume_group_t VOLUME_GROUP_NONE = static_cast<volume_group_t>(-1);
+
} // namespace android