50 lines
1.9 KiB
Markdown
50 lines
1.9 KiB
Markdown
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# Audio HAL
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Directory structure of the audio HAL related code.
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Run `common/all-versions/copyHAL.sh` to create a new version of the audio HAL
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based on an existing one.
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## Directory Structure
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* `2.0` -- version 2.0 of the core HIDL API. Note that `.hal` files
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can not be moved into the `core` directory because that would change
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its namespace and include path.
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- `config` -- the XSD schema for the Audio Policy Manager
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configuration file.
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* `4.0` -- version 4.0 of the core HIDL API.
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* ...
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* `common` -- common types for audio core and effect HIDL API.
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- `2.0` -- version 2.0 of the common types HIDL API.
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- `4.0` -- version 4.0.
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- ...
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- `all-versions` -- code common to all version of both core and effect API.
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- `default` -- shared code of the default implementation.
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- `service` -- vendor HAL service for hosting the default
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implementation.
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- `test` -- utilities used by tests.
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- `util` -- utilities used by both implementation and tests.
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* `core` -- VTS tests and the default implementation of the core API
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(not HIDL API, it's in `audio/N.M`).
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- `7.0` -- code specific to version V7.0 of the core HIDL API
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- `all-versions` -- the code is common between all versions,
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version-specific parts are enclosed into conditional directives
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of preprocessor or reside in dedicated files.
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- `default` -- code that wraps the legacy API (from
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`hardware/libhardware`).
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- `vts` VTS tests for the core HIDL API.
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* `effect` -- same for the effect HIDL API.
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- `2.0`
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- `config` -- the XSD schema for the Audio Effects configuration
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file.
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- `4.0`
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- ...
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- `all-versions`
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- `default`
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- `vts`
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* `policy` -- Configurable Audio Policy schemes.
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- `1.0` -- note that versions of CAP are not linked to the versions
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of audio HAL.
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- `vts` -- VTS tests for validating actual configuration files.
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- `xml` -- XSD schemas for CAP configuration files.
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