diff --git a/audio/6.0/IStreamOut.hal b/audio/6.0/IStreamOut.hal
index 91668ba..13a86ec 100644
--- a/audio/6.0/IStreamOut.hal
+++ b/audio/6.0/IStreamOut.hal
@@ -333,4 +333,33 @@
      * @return retval operation completion status.
      */
     setAudioDescriptionMixLevel(float leveldB) generates (Result retval);
+
+    /**
+     * Retrieves current playback rate parameters.
+     *
+     * Optional method
+     *
+     * @return retval operation completion status.
+     * @return playbackRate current playback parameters
+     */
+    getPlaybackRateParameters()
+            generates (Result retval, PlaybackRate playbackRate);
+
+    /**
+     * Sets the playback rate parameters that control playback behavior.
+     * This is normally used when playing encoded content and decoding
+     * is performed in hardware. Otherwise, the framework can apply
+     * necessary transformations.
+     *
+     * Optional method
+     *
+     * If the HAL supports setting the playback rate, it is recommended
+     * to support speed and pitch values at least in the range
+     * from 0.5f to 2.0f, inclusive (see the definition of PlaybackRate struct).
+     *
+     * @param playbackRate playback parameters
+     * @return retval operation completion status.
+     */
+    setPlaybackRateParameters(PlaybackRate playbackRate)
+            generates (Result retval);
 };
diff --git a/audio/6.0/types.hal b/audio/6.0/types.hal
index efc3ea5..8ff618e 100644
--- a/audio/6.0/types.hal
+++ b/audio/6.0/types.hal
@@ -297,3 +297,61 @@
      */
     RR = 3,
 };
+
+/**
+ * Algorithms used for timestretching (preserving pitch while playing audio
+ * content at different speed).
+ */
+@export(name="audio_timestretch_stretch_mode_t", value_prefix="AUDIO_TIMESTRETCH_STRETCH_")
+enum TimestretchMode : int32_t {
+    // Need to be in sync with AUDIO_STRETCH_MODE_* constants in
+    // frameworks/base/media/java/android/media/PlaybackParams.java
+    DEFAULT = 0,
+    /** Selects timestretch algorithm best suitable for voice (speech) content. */
+    VOICE = 1,
+};
+
+/**
+ * Behavior when the values for speed and / or pitch are out
+ * of applicable range.
+ */
+@export(name="audio_timestretch_fallback_mode_t", value_prefix="AUDIO_TIMESTRETCH_FALLBACK_")
+enum TimestretchFallbackMode : int32_t {
+    // Need to be in sync with AUDIO_FALLBACK_MODE_* constants in
+    // frameworks/base/media/java/android/media/PlaybackParams.java
+    /** Play silence for parameter values that are out of range. */
+    MUTE = 1,
+    /** Return an error while trying to set the parameters. */
+    FAIL = 2,
+};
+
+/**
+ * Parameters determining playback behavior. They are used to speed up or
+ * slow down playback and / or change the tonal frequency of the audio content
+ * (pitch).
+ */
+struct PlaybackRate {
+    /**
+     * Speed factor (multiplier). Normal speed has the value of 1.0f.
+     * Values less than 1.0f slow down playback, value greater than 1.0f
+     * speed it up.
+     */
+    float speed;
+    /**
+     * Pitch factor (multiplier). Setting pitch value to 1.0f together
+     * with changing playback speed preserves the pitch, this is often
+     * called "timestretching." Setting the pitch value equal to speed produces
+     * the same effect as playing audio content at different sampling rate.
+     */
+    float pitch;
+    /**
+     * Selects the algorithm used for timestretching (preserving pitch while
+     * playing audio at different speed).
+     */
+    TimestretchMode timestretchMode;
+    /**
+     * Selects the behavior when the specified values for speed and / or pitch
+     * are out of applicable range.
+     */
+    TimestretchFallbackMode fallbackMode;
+};
diff --git a/audio/core/all-versions/default/StreamOut.cpp b/audio/core/all-versions/default/StreamOut.cpp
index cfbee34..7a4d72b 100644
--- a/audio/core/all-versions/default/StreamOut.cpp
+++ b/audio/core/all-versions/default/StreamOut.cpp
@@ -600,6 +600,18 @@
 Return<Result> StreamOut::setAudioDescriptionMixLevel(float /*leveldB*/) {
     return Result::NOT_SUPPORTED;
 }
+
+Return<void> StreamOut::getPlaybackRateParameters(getPlaybackRateParameters_cb _hidl_cb) {
+    _hidl_cb(Result::NOT_SUPPORTED,
+             // Same as AUDIO_PLAYBACK_RATE_INITIALIZER
+             PlaybackRate{1.0f, 1.0f, TimestretchMode::DEFAULT, TimestretchFallbackMode::FAIL});
+    return Void();
+}
+
+Return<Result> StreamOut::setPlaybackRateParameters(const PlaybackRate& /*playbackRate*/) {
+    return Result::NOT_SUPPORTED;
+}
+
 #endif
 
 }  // namespace implementation
diff --git a/audio/core/all-versions/default/include/core/default/StreamOut.h b/audio/core/all-versions/default/include/core/default/StreamOut.h
index 294867c..5db8626 100644
--- a/audio/core/all-versions/default/include/core/default/StreamOut.h
+++ b/audio/core/all-versions/default/include/core/default/StreamOut.h
@@ -126,6 +126,8 @@
     Return<Result> setDualMonoMode(DualMonoMode mode) override;
     Return<void> getAudioDescriptionMixLevel(getAudioDescriptionMixLevel_cb _hidl_cb) override;
     Return<Result> setAudioDescriptionMixLevel(float leveldB) override;
+    Return<void> getPlaybackRateParameters(getPlaybackRateParameters_cb _hidl_cb) override;
+    Return<Result> setPlaybackRateParameters(const PlaybackRate& playbackRate) override;
 #endif
 
     static Result getPresentationPositionImpl(audio_stream_out_t* stream, uint64_t* frames,
diff --git a/audio/core/all-versions/vts/functional/6.0/AudioPrimaryHidlHalTest.cpp b/audio/core/all-versions/vts/functional/6.0/AudioPrimaryHidlHalTest.cpp
index c9ba509..9e2a050 100644
--- a/audio/core/all-versions/vts/functional/6.0/AudioPrimaryHidlHalTest.cpp
+++ b/audio/core/all-versions/vts/functional/6.0/AudioPrimaryHidlHalTest.cpp
@@ -217,3 +217,37 @@
 INSTANTIATE_TEST_CASE_P(AudioDescriptionMixLevelHidl, AudioDescriptionMixLevelHidlTest,
                         ::testing::ValuesIn(getOutputDeviceConfigParameters()),
                         &DeviceConfigParameterToString);
+
+using PlaybackRateParametersHidlTest = AccessorHidlTest<PlaybackRate, OutputStreamTest>;
+TEST_P(PlaybackRateParametersHidlTest, PlaybackRateParametersTest) {
+    doc::test("Check that playback rate parameters can be set and retrieved");
+    testAccessors<OPTIONAL>(
+            &OutputStreamTest::getStream, "playback rate parameters",
+            Initial{PlaybackRate{1.0f, 1.0f, TimestretchMode::DEFAULT,
+                                 TimestretchFallbackMode::FAIL}},
+            {// Speed and pitch values in the range from 0.5f to 2.0f must be supported
+             // (see the definition of IStreamOut::setPlaybackRateParameters).
+             PlaybackRate{1.0f, 1.0f, TimestretchMode::DEFAULT, TimestretchFallbackMode::MUTE},
+             PlaybackRate{2.0f, 2.0f, TimestretchMode::DEFAULT, TimestretchFallbackMode::MUTE},
+             PlaybackRate{0.5f, 0.5f, TimestretchMode::DEFAULT, TimestretchFallbackMode::MUTE},
+             // Gross speed / pitch values must not be rejected if the fallback mode is "mute"
+             PlaybackRate{1000.0f, 1000.0f, TimestretchMode::DEFAULT,
+                          TimestretchFallbackMode::MUTE},
+             // Default speed / pitch values must not be rejected in "fail" fallback mode
+             PlaybackRate{1.0f, 1.0f, TimestretchMode::DEFAULT, TimestretchFallbackMode::FAIL},
+             // Same for "voice" mode
+             PlaybackRate{1.0f, 1.0f, TimestretchMode::VOICE, TimestretchFallbackMode::MUTE},
+             PlaybackRate{2.0f, 2.0f, TimestretchMode::VOICE, TimestretchFallbackMode::MUTE},
+             PlaybackRate{0.5f, 0.5f, TimestretchMode::VOICE, TimestretchFallbackMode::MUTE},
+             PlaybackRate{1000.0f, 1000.0f, TimestretchMode::VOICE, TimestretchFallbackMode::MUTE},
+             PlaybackRate{1.0f, 1.0f, TimestretchMode::VOICE, TimestretchFallbackMode::FAIL}},
+            &IStreamOut::setPlaybackRateParameters, &IStreamOut::getPlaybackRateParameters,
+            {PlaybackRate{1000.0f, 1000.0f, TimestretchMode::DEFAULT,
+                          TimestretchFallbackMode::FAIL},
+             PlaybackRate{1000.0f, 1000.0f, TimestretchMode::VOICE,
+                          TimestretchFallbackMode::FAIL}});
+}
+
+INSTANTIATE_TEST_CASE_P(PlaybackRateParametersHidl, PlaybackRateParametersHidlTest,
+                        ::testing::ValuesIn(getOutputDeviceConfigParameters()),
+                        &DeviceConfigParameterToString);
diff --git a/current.txt b/current.txt
index f1245c2..0a7bf74 100644
--- a/current.txt
+++ b/current.txt
@@ -605,13 +605,13 @@
 5751f230e86a36111e7c5b995577cbf89d8df76c8e6c7641199198f3db3a93f7 android.hardware.wifi@1.3::IWifiStaIface
 
 # HALs released in Android R
-6cc7fee7bbb7b34e3b8fe75526600400e51d18fe948419d88f294d76b6a4d921 android.hardware.audio@6.0::types
+822369cf4dc16a6f6b9622bcf86cbdc0b692dc82193fc15e967767175cbfdd8f android.hardware.audio@6.0::types
 7241bd4596a927cd46d4b82f5e29e2cbe57f194aa1b25555f1d1d352e8b15c61 android.hardware.audio@6.0::IDevice
 2402876cbc23c0de3690a665eca84fd3857d1808dba5cad25ce272f81ecef8c9 android.hardware.audio@6.0::IDevicesFactory
 bca5379d5065e2e08b6ad7308ffc8a71a972fc0698bec678ea32eea786d01cb5 android.hardware.audio@6.0::IPrimaryDevice
 fd1f1b29f26b42e886220f04a08086c00e5ade9d7b53f095438e578ab9d42a93 android.hardware.audio@6.0::IStream
 2df5d5866b37776f25079c0e54b54350a2abe4e025a59c9e02a7d3abe8ca00e8 android.hardware.audio@6.0::IStreamIn
-0d0bbac03e90b18cbf0d1930b89d0c64e41dd2f0d68b652f7ed08347cf5f5f77 android.hardware.audio@6.0::IStreamOut
+e6cd2b7c1a86b6ca683c0224ffde3b73aa14f6487de9f46833e539d26d1b3b5c android.hardware.audio@6.0::IStreamOut
 997fdaad7a9d17ee7e01feb7031a753e2365e72ad30b11d950e9183fabdf3844 android.hardware.audio@6.0::IStreamOutCallback
 167ed5cfb7d91db2e2bf20f1320c1a9004eeb768e26f535e0f7db94a21867d21 android.hardware.audio.common@6.0::types
 817930d58412d662cb45e641c50cb62c727e4a3e3ffe7029a53cad9677b97d58 android.hardware.audio.effect@6.0::types