diff options
| author | Nikhil Bhanu <nikhilbhanu@google.com> | 2023-11-21 16:34:25 -0800 |
|---|---|---|
| committer | Shunkai Yao <yaoshunkai@google.com> | 2024-02-08 17:14:42 +0000 |
| commit | e0283c632d005ebe1cae13eeb4a165ed46fb3dc0 (patch) | |
| tree | 67e6330fd7342837db1e68962ce441afc24b5c53 | |
| parent | 1d199ce8e42e5a05e8bb076bc636d60bac18efa6 (diff) | |
| download | media-e0283c632d005ebe1cae13eeb4a165ed46fb3dc0.tar.gz | |
audio: add audio_channel_mask_contains_stereo
This is used to determine track channel mask
eligibility for stereo spatialization.
Bug: 303920722
Test: manual
Merged-In: I33e92a4341e7d265cec07237db4538e4629076d4
Change-Id: I33e92a4341e7d265cec07237db4538e4629076d4
| -rw-r--r-- | audio/include/system/audio.h | 18 | ||||
| -rw-r--r-- | audio/include/system/audio_effects/effect_spatializer.h | 9 |
2 files changed, 26 insertions, 1 deletions
diff --git a/audio/include/system/audio.h b/audio/include/system/audio.h index 826c1a22..2979ba3f 100644 --- a/audio/include/system/audio.h +++ b/audio/include/system/audio.h @@ -332,6 +332,24 @@ static inline CONSTEXPR audio_channel_mask_t audio_channel_mask_from_representat } /* + * Returns true so long as stereo channels are present in the channel mask. + * + * This is the minimum constraint for spatialization in Android V. + * + * Prior to V, AUDIO_CHANNEL_OUT_QUAD was the minimum constraint. + * Prior to T, AUDIO_CHANNEL_OUT_5POINT1 was the minimum constraint. + * + * TODO(b/303920722) rename to audio_is_channel_mask_spatialized() after testing + * is complete. + * TODO(b/316909431) flagged at caller due to lack of native_bridge flag support. + */ +static inline CONSTEXPR bool audio_channel_mask_contains_stereo(audio_channel_mask_t channelMask) { + return audio_channel_mask_get_representation(channelMask) + == AUDIO_CHANNEL_REPRESENTATION_POSITION + && (channelMask & AUDIO_CHANNEL_OUT_STEREO) == AUDIO_CHANNEL_OUT_STEREO; +} + +/* * Returns true so long as Quadraphonic channels (FL, FR, BL, BR) * or (FL, FR, SL, SR) are completely specified * in the channel mask. We expect these 4 channels to be the minimum for diff --git a/audio/include/system/audio_effects/effect_spatializer.h b/audio/include/system/audio_effects/effect_spatializer.h index b92bb50d..2035d45f 100644 --- a/audio/include/system/audio_effects/effect_spatializer.h +++ b/audio/include/system/audio_effects/effect_spatializer.h @@ -86,7 +86,14 @@ typedef enum // Set/get the head tracking data connection mode: passes the mode followed by the sensor ID // on uint32_t - SPATIALIZER_PARAM_HEADTRACKING_CONNECTION + SPATIALIZER_PARAM_HEADTRACKING_CONNECTION, + // Set/get the actual input channel mask of the track being spatialized. This is required to + // support stereo spatialization (b/303920722) where number of active input channels would be + // different from the channel mask received during effect configuration. + // Stereo channels will be packed into 5.1 stream where the other 4 channels will contain + // silence. The effect can configure spatialization settings accordingly when this parameter is + // received. + SPATIALIZER_PARAM_INPUT_CHANNEL_MASK, } t_virtualizer_stage_params; // See SpatializationLevel.aidl |