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platform_hardware_interfaces/audio
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Mikhail Naganov 8d8dfcd8ed audio: Align lists of enum values between framework and HAL 
Enum values defined in the XSD now correspond to the
"no system definitions" lists of enums in
system/media/audio/audio-hal-enums.h.

Added channel masks that used to be in s/m/a/audio-base-utils.h.
Removed use of "vectors of vectors" for channel masks
since individual channels are not allowed to be used
in the APM config and at the HAL transport level.

Fixed definition of the gain mode of audio ports:

1. Since it's a bit mask in the framework, it must be a list in
   the audio policy configuration XML file. Note that the old
   definition is compatible with the new one as one element is a
   valid list.
2. As gain mode is defined in the XSD file, it shouldn't be
   defined again in types.hal.

Added 'AUDIO_SOURCE_HOTWORD'.

Bug: 122858783
Bug: 142480271
Test: audio smoke tests
Change-Id: Ie5896775b6bc7dfd3ab158c4a7b497dbda827e9d
2020-10-16 23:01:13 +00:00
..
2.0 update hidl .bp 2020-07-07 16:22:36 +09:00
4.0 Make android.hardware.renderscript@1.0 buildable for native_bridge 2020-07-08 21:20:03 +00:00
5.0 update hidl .bp 2020-07-07 16:22:36 +09:00
6.0 update hidl .bp 2020-07-07 16:22:36 +09:00
7.0 audio: Align lists of enum values between framework and HAL 2020-10-16 23:01:13 +00:00
common audio: Align lists of enum values between framework and HAL 2020-10-16 23:01:13 +00:00
core/all-versions audio: Align lists of enum values between framework and HAL 2020-10-16 23:01:13 +00:00
effect audio: Implement VTS tests for V7.0 2020-09-29 17:45:13 +00:00
policy/1.0 Remove vts10 reference vts_target_tests_defaults 2020-10-05 10:48:24 -07:00
README.md audio: Add example HAL implementation 2020-09-28 23:18:37 +00:00

README.md

Audio HAL

Directory structure of the audio HAL related code.

Run common/all-versions/copyHAL.sh to create a new version of the audio HAL based on an existing one.

Directory Structure

  • 2.0 -- version 2.0 of the core HIDL API. Note that .hal files can not be moved into the core directory because that would change its namespace and include path.
    • config -- the XSD schema for the Audio Policy Manager configuration file.
  • 4.0 -- version 4.0 of the core HIDL API.
  • ...
  • common -- common types for audio core and effect HIDL API.
    • 2.0 -- version 2.0 of the common types HIDL API.
    • 4.0 -- version 4.0.
    • ...
    • 7.0 -- version 7.0.
      • example -- example implementation of the core and effect V7.0 API. It represents a "fake" audio HAL that doesn't actually communicate with hardware.
    • all-versions -- code common to all version of both core and effect API.
      • default -- shared code of the default implementation.
        • service -- vendor HAL service for hosting the default implementation.
      • test -- utilities used by tests.
      • util -- utilities used by both implementation and tests.
  • core -- VTS tests and the default implementation of the core API (not HIDL API, it's in audio/N.M).
    • 7.0 -- code specific to version V7.0 of the core HIDL API
    • all-versions -- the code is common between all versions, version-specific parts are enclosed into conditional directives of preprocessor or reside in dedicated files.
      • default -- code that wraps the legacy API (from hardware/libhardware).
      • vts VTS tests for the core HIDL API.
  • effect -- same for the effect HIDL API.
    • 2.0
      • config -- the XSD schema for the Audio Effects configuration file.
    • 4.0
    • ...
    • all-versions
      • default
      • vts
  • policy -- Configurable Audio Policy schemes.
    • 1.0 -- note that versions of CAP are not linked to the versions of audio HAL.
      • vts -- VTS tests for validating actual configuration files.
      • xml -- XSD schemas for CAP configuration files.