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Audio: Document channel order convention

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This patch restores the documentation on the channel order convention
that was present in the Audio HAL 2.0 but remove by mistake in 4.0.

This is a vendor feedback.

Test: mm
Bug: 133453897
Change-Id: I8eabd8883612d39ced21481fc44661b0808754bb
Signed-off-by: Kevin Rocard <krocard@google.com>
This commit is contained in:
Kevin Rocard
2019-05-23 16:00:01 -07:00
parent 2317d2e960
commit 64a35d0d16
2 changed files with 8 additions and 1 deletions
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8
audio/common/5.0/types.hal
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@@ -331,7 +331,13 @@ enum FixedChannelCount : int32_t {
/**
* A channel mask per se only defines the presence or absence of a channel, not
* the order. See AUDIO_INTERLEAVE_* for the platform convention of order.
* the order.
*
* The channel order convention is that channels are interleaved in order from
* least significant channel mask bit to most significant channel mask bit,
* with unused bits skipped. For example for stereo, LEFT would be first,
* followed by RIGHT.
* Any exceptions to this convention are noted at the appropriate API.
*
* AudioChannelMask is an opaque type and its internal layout should not be
* assumed as it may change in the future. Instead, always use functions

1
current.txt
View File

@@ -428,6 +428,7 @@ b9d41ff4031266de1ecef394a8a64de7d857634dd08dc6be855fca2fe3075975 android.hardwar
1b0500367ed2b32a841667ac3200edf3d3a164e8004aca445ff1b085ac831e93 android.hardware.audio@5.0::IStreamOutCallback
83e365479cc77d8717c155e1787ee668cd2ae4c557b467cf75b8e7cd53697ad8 android.hardware.audio@5.0::types
07d17800b298331e90d4ea5d8ba19a1ae3fe9c1dbff08d9f75fd3ade09496d67 android.hardware.audio.common@5.0::types
b3c1ec989f317b9a36eac10f4e7b66aad2997302156899481553a67476e148dd android.hardware.audio.common@5.0::types # b/133453897
f269297866765b95ddd1825676cc8a772f0c7c9863286df596fc302781a42ff5 android.hardware.audio.effect@5.0::IAcousticEchoCancelerEffect
fa187b602d8939644ef708ed7627f2e3deac97899a4bda1de07f2ff126abe243 android.hardware.audio.effect@5.0::IAutomaticGainControlEffect
e1bf864ccb8458c0da1dcc74a2e748b1dca8ac360df590591cf82d98292d7981 android.hardware.audio.effect@5.0::IBassBoostEffect