audio: Add Dual Mono Mode and Audio Description Mix Level to IStreamOut
These properties are mainly used on TV platforms.
Bug: 133526565
Test: atest VtsHalAudioV6_0TargetTest
Change-Id: I5dd2fe9cb987bf8435b8e5da96f8590288e5707c
diff --git a/audio/6.0/IStreamOut.hal b/audio/6.0/IStreamOut.hal
index 941ba61..91668ba 100644
--- a/audio/6.0/IStreamOut.hal
+++ b/audio/6.0/IStreamOut.hal
@@ -276,4 +276,61 @@
*/
selectPresentation(int32_t presentationId, int32_t programId)
generates (Result retval);
+
+ /**
+ * Returns the Dual Mono mode presentation setting.
+ *
+ * Optional method
+ *
+ * @return retval operation completion status.
+ * @return mode current setting of Dual Mono mode.
+ */
+ getDualMonoMode() generates (Result retval, DualMonoMode mode);
+
+ /**
+ * Sets the Dual Mono mode presentation on the output device.
+ *
+ * The Dual Mono mode is generally applied to stereo audio streams
+ * where the left and right channels come from separate sources.
+ *
+ * Optional method
+ *
+ * @param mode selected Dual Mono mode.
+ * @return retval operation completion status.
+ */
+ setDualMonoMode(DualMonoMode mode) generates (Result retval);
+
+ /**
+ * Returns the Audio Description Mix level in dB.
+ *
+ * The level is applied to streams incorporating a secondary Audio
+ * Description stream. It specifies the relative level of mixing for
+ * the Audio Description with a reference to the Main Audio.
+ *
+ * Optional method
+ *
+ * The value of the relative level is in the range from negative infinity
+ * to +48.
+ *
+ * @return retval operation completion status.
+ * @return leveldB the current Audio Description Mix Level in dB.
+ */
+ getAudioDescriptionMixLevel() generates (Result retval, float leveldB);
+
+ /**
+ * Sets the Audio Description Mix level in dB.
+ *
+ * For streams incorporating a secondary Audio Description stream
+ * the relative level of mixing of the Audio Description to the Main Audio
+ * is controlled by this method.
+ *
+ * Optional method
+ *
+ * The value of the relative level must be in the range from negative
+ * infinity to +48.
+ *
+ * @param leveldB Audio Description Mix Level in dB
+ * @return retval operation completion status.
+ */
+ setAudioDescriptionMixLevel(float leveldB) generates (Result retval);
};
diff --git a/audio/6.0/types.hal b/audio/6.0/types.hal
index 1a704f8..efc3ea5 100644
--- a/audio/6.0/types.hal
+++ b/audio/6.0/types.hal
@@ -247,3 +247,53 @@
*/
EXTERNAL = 3,
};
+
+
+/* Dual Mono handling is used when a stereo audio stream
+ * contains separate audio content on the left and right channels.
+ * Such information about the content of the stream may be found, for example,
+ * in ITU T-REC-J.94-201610 A.6.2.3 Component descriptor.
+ */
+@export(name="audio_dual_mono_mode_t", value_prefix="AUDIO_DUAL_MONO_MODE_")
+enum DualMonoMode : int32_t {
+ // Need to be in sync with DUAL_MONO_MODE* constants in
+ // frameworks/base/media/java/android/media/AudioTrack.java
+ /**
+ * Disable any Dual Mono presentation effect.
+ *
+ */
+ OFF = 0,
+ /**
+ * This mode indicates that a stereo stream should be presented
+ * with the left and right audio channels blended together
+ * and delivered to both channels.
+ *
+ * Behavior for non-stereo streams is implementation defined.
+ * A suggested guideline is that the left-right stereo symmetric
+ * channels are pairwise blended, the other channels such as center
+ * are left alone.
+ */
+ LR = 1,
+ /**
+ * This mode indicates that a stereo stream should be presented
+ * with the left audio channel replicated into the right audio channel.
+ *
+ * Behavior for non-stereo streams is implementation defined.
+ * A suggested guideline is that all channels with left-right
+ * stereo symmetry will have the left channel position replicated
+ * into the right channel position. The center channels (with no
+ * left/right symmetry) or unbalanced channels are left alone.
+ */
+ LL = 2,
+ /**
+ * This mode indicates that a stereo stream should be presented
+ * with the right audio channel replicated into the left audio channel.
+ *
+ * Behavior for non-stereo streams is implementation defined.
+ * A suggested guideline is that all channels with left-right
+ * stereo symmetry will have the right channel position replicated
+ * into the left channel position. The center channels (with no
+ * left/right symmetry) or unbalanced channels are left alone.
+ */
+ RR = 3,
+};