Changes made to the .hal definition:
- added missing generated Result for methods implemented via legacy
"command" function;
- fixed Aux Channels feature definition;
- added "size" parameter for reply data in cases where the wrapper
needs to allocate a reply buffer;
- added method for generic support of feature configs;
- added new Result type;
- use arrays instead of strings in effect descriptor to ease
conversion from / to legacy HAL;
- added missing method to the Preset Reverb interface;
- fixed names of the Visualizer enums to avoid clashes with defines
from the legacy HAL file.
The implementation isn't hooked up to the server yet. Need to implement
devices and streams first.
Bug: 30222631
Change-Id: I75bb42f19ac3303759e918b6d6a91646b1555f8c
Test: make
Created after hardware/audio_effect.h with the following changes:
- names changed to satisfy HAL style guide;
- defined an interface per effect, an interface method
per command, and getter / setter methods for properties;
- retained methods for executing proprietary commands
and accessing proprietary properties, only to be used
for third-party software effects;
- HIDL vector type is used instead of count / array pairs;
- provider callback changed to be used over RPC;
- 'dump' is method is already defined by generated code.
Note that audio data is currently transferred using AudioBuffers,
which is not effective due to memory copy and HwBinder transaction
involved. The transfer method will be changed to FastMessageQueue.
Bug: 30222631
Test: make
Change-Id: Ic8ea5c19688610ebe642c7597d2bcfa3226977e7
