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-rw-r--r--include/system/audio.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/system/audio.h b/include/system/audio.h
index b90f4a9..aa7ac02 100644
--- a/include/system/audio.h
+++ b/include/system/audio.h
@@ -72,6 +72,11 @@ typedef enum {
/* play the mix captured by this audio source. */
AUDIO_SOURCE_CNT,
AUDIO_SOURCE_MAX = AUDIO_SOURCE_CNT - 1,
+ AUDIO_SOURCE_HOTWORD = 1999, /* A low-priority, preemptible audio source for
+ for background software hotword detection.
+ Same tuning as AUDIO_SOURCE_VOICE_RECOGNITION.
+ Used only internally to the framework. Not exposed
+ at the audio HAL. */
} audio_source_t;
/* special audio session values