diff --git a/audio/cheetah/config/audio_platform_configuration.xml b/audio/cheetah/config/audio_platform_configuration.xml
index 0b204f6..88c1026 100644
--- a/audio/cheetah/config/audio_platform_configuration.xml
+++ b/audio/cheetah/config/audio_platform_configuration.xml
@@ -176,8 +176,8 @@
         <usecase id="UC_RAW_PLAYBACK" dev1="23" dyn_path="true" dsp_vol="false" mmap="true" period="64" period_num="32"/>
         <!-- for output with AUDIO_OUTPUT_FLAG_PRIMARY|AUDIO_OUTPUT_FLAG_FAST, 4 * 10ms buffer -->
         <usecase id="UC_LOW_LATENCY_PLAYBACK" dev1="1" dyn_path="true" dsp_vol="false" mmap="false" period="10" period_num="4"/>
-        <!-- for output with AUDIO_OUTPUT_FLAG_MMAP_NOIRQ, 80 periods * 48 frames/period(=1ms w/ 48k sample rate) * 4 bytes/frame = 15360 bytes -->
-        <usecase id="UC_MMAP_PLAYBACK" dev1="0" dyn_path="true" dsp_vol="false" mmap="true" period="1" period_num="80"/>
+        <!-- for output with AUDIO_OUTPUT_FLAG_MMAP_NOIRQ, 40 periods * 48 frames/period(=1ms w/ 48k sample rate) * 2ch *4(float) = 15360 bytes -->
+        <usecase id="UC_MMAP_PLAYBACK" dev1="0" dyn_path="true" dsp_vol="false" mmap="true" period="1" period_num="40"/>
         <!-- for output with AUDIO_OUTPUT_FLAG_DEEP_BUFFER, 4 * 20ms buffer -->
         <usecase id="UC_DEEP_BUFFER_PLAYBACK" dev1="5" dyn_path="true" dsp_vol="false" mmap="false" period="20" period_num="4"/>
         <!-- dev1: voice-call downlink dev2: voice-clal uplink -->
diff --git a/audio/cheetah/config/audio_policy_configuration.xml b/audio/cheetah/config/audio_policy_configuration.xml
index ac997b5..b2abc72 100644
--- a/audio/cheetah/config/audio_policy_configuration.xml
+++ b/audio/cheetah/config/audio_policy_configuration.xml
@@ -60,7 +60,7 @@
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <mixPort name="mmap_no_irq_out" role="source" flags="AUDIO_OUTPUT_FLAG_DIRECT AUDIO_OUTPUT_FLAG_MMAP_NOIRQ">
-                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
+                    <profile name="" format="AUDIO_FORMAT_PCM_FLOAT"
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <mixPort name="incall playback" role="source"
diff --git a/audio/cheetah/config/audio_policy_configuration_a2dp_offload_disabled.xml b/audio/cheetah/config/audio_policy_configuration_a2dp_offload_disabled.xml
index dbc00c3..f832eac 100644
--- a/audio/cheetah/config/audio_policy_configuration_a2dp_offload_disabled.xml
+++ b/audio/cheetah/config/audio_policy_configuration_a2dp_offload_disabled.xml
@@ -60,7 +60,7 @@
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <mixPort name="mmap_no_irq_out" role="source" flags="AUDIO_OUTPUT_FLAG_DIRECT AUDIO_OUTPUT_FLAG_MMAP_NOIRQ">
-                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
+                    <profile name="" format="AUDIO_FORMAT_PCM_FLOAT"
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <mixPort name="incall playback" role="source"
diff --git a/audio/cheetah/config/audio_policy_configuration_bluetooth_legacy_hal.xml b/audio/cheetah/config/audio_policy_configuration_bluetooth_legacy_hal.xml
index 342f855..c3c66c4 100644
--- a/audio/cheetah/config/audio_policy_configuration_bluetooth_legacy_hal.xml
+++ b/audio/cheetah/config/audio_policy_configuration_bluetooth_legacy_hal.xml
@@ -60,7 +60,7 @@
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <mixPort name="mmap_no_irq_out" role="source" flags="AUDIO_OUTPUT_FLAG_DIRECT AUDIO_OUTPUT_FLAG_MMAP_NOIRQ">
-                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
+                    <profile name="" format="AUDIO_FORMAT_PCM_FLOAT"
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <mixPort name="incall playback" role="source"
diff --git a/audio/cloudripper/config/audio_platform_configuration.xml b/audio/cloudripper/config/audio_platform_configuration.xml
index 8ef3573..7d6985d 100644
--- a/audio/cloudripper/config/audio_platform_configuration.xml
+++ b/audio/cloudripper/config/audio_platform_configuration.xml
@@ -176,8 +176,8 @@
         <usecase id="UC_RAW_PLAYBACK" dev1="23" dyn_path="true" dsp_vol="false" mmap="true" period="64" period_num="32"/>
         <!-- for output with AUDIO_OUTPUT_FLAG_PRIMARY|AUDIO_OUTPUT_FLAG_FAST, 4 * 10ms buffer -->
         <usecase id="UC_LOW_LATENCY_PLAYBACK" dev1="1" dyn_path="true" dsp_vol="false" mmap="false" period="10" period_num="4"/>
-        <!-- for output with AUDIO_OUTPUT_FLAG_MMAP_NOIRQ, 80 periods * 48 frames/period(=1ms w/ 48k sample rate) * 4 bytes/frame = 15360 bytes -->
-        <usecase id="UC_MMAP_PLAYBACK" dev1="0" dyn_path="true" dsp_vol="false" mmap="true" period="1" period_num="80"/>
+        <!-- for output with AUDIO_OUTPUT_FLAG_MMAP_NOIRQ, 40 periods * 48 frames/period(=1ms w/ 48k sample rate) * 2ch *4(float) = 15360 bytes -->
+        <usecase id="UC_MMAP_PLAYBACK" dev1="0" dyn_path="true" dsp_vol="false" mmap="true" period="1" period_num="40"/>
         <!-- for output with AUDIO_OUTPUT_FLAG_DEEP_BUFFER, 4 * 20ms buffer -->
         <usecase id="UC_DEEP_BUFFER_PLAYBACK" dev1="5" dyn_path="true" dsp_vol="false" mmap="false" period="20" period_num="4"/>
         <!-- dev1: voice-call downlink dev2: voice-clal uplink -->
diff --git a/audio/cloudripper/config/audio_policy_configuration.xml b/audio/cloudripper/config/audio_policy_configuration.xml
index 6fa66e9..6a88c0a 100644
--- a/audio/cloudripper/config/audio_policy_configuration.xml
+++ b/audio/cloudripper/config/audio_policy_configuration.xml
@@ -60,7 +60,7 @@
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <mixPort name="mmap_no_irq_out" role="source" flags="AUDIO_OUTPUT_FLAG_DIRECT AUDIO_OUTPUT_FLAG_MMAP_NOIRQ">
-                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
+                    <profile name="" format="AUDIO_FORMAT_PCM_FLOAT"
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <mixPort name="incall playback" role="source"
diff --git a/audio/cloudripper/config/audio_policy_configuration_a2dp_offload_disabled.xml b/audio/cloudripper/config/audio_policy_configuration_a2dp_offload_disabled.xml
index c2877c0..7834dde 100644
--- a/audio/cloudripper/config/audio_policy_configuration_a2dp_offload_disabled.xml
+++ b/audio/cloudripper/config/audio_policy_configuration_a2dp_offload_disabled.xml
@@ -60,7 +60,7 @@
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <mixPort name="mmap_no_irq_out" role="source" flags="AUDIO_OUTPUT_FLAG_DIRECT AUDIO_OUTPUT_FLAG_MMAP_NOIRQ">
-                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
+                    <profile name="" format="AUDIO_FORMAT_PCM_FLOAT"
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <mixPort name="incall playback" role="source"
diff --git a/audio/cloudripper/config/audio_policy_configuration_bluetooth_legacy_hal.xml b/audio/cloudripper/config/audio_policy_configuration_bluetooth_legacy_hal.xml
index df384c5..f4deda7 100644
--- a/audio/cloudripper/config/audio_policy_configuration_bluetooth_legacy_hal.xml
+++ b/audio/cloudripper/config/audio_policy_configuration_bluetooth_legacy_hal.xml
@@ -60,7 +60,7 @@
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <mixPort name="mmap_no_irq_out" role="source" flags="AUDIO_OUTPUT_FLAG_DIRECT AUDIO_OUTPUT_FLAG_MMAP_NOIRQ">
-                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
+                    <profile name="" format="AUDIO_FORMAT_PCM_FLOAT"
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <mixPort name="incall playback" role="source"
diff --git a/audio/panther/config/audio_platform_configuration.xml b/audio/panther/config/audio_platform_configuration.xml
index 0b204f6..88c1026 100644
--- a/audio/panther/config/audio_platform_configuration.xml
+++ b/audio/panther/config/audio_platform_configuration.xml
@@ -176,8 +176,8 @@
         <usecase id="UC_RAW_PLAYBACK" dev1="23" dyn_path="true" dsp_vol="false" mmap="true" period="64" period_num="32"/>
         <!-- for output with AUDIO_OUTPUT_FLAG_PRIMARY|AUDIO_OUTPUT_FLAG_FAST, 4 * 10ms buffer -->
         <usecase id="UC_LOW_LATENCY_PLAYBACK" dev1="1" dyn_path="true" dsp_vol="false" mmap="false" period="10" period_num="4"/>
-        <!-- for output with AUDIO_OUTPUT_FLAG_MMAP_NOIRQ, 80 periods * 48 frames/period(=1ms w/ 48k sample rate) * 4 bytes/frame = 15360 bytes -->
-        <usecase id="UC_MMAP_PLAYBACK" dev1="0" dyn_path="true" dsp_vol="false" mmap="true" period="1" period_num="80"/>
+        <!-- for output with AUDIO_OUTPUT_FLAG_MMAP_NOIRQ, 40 periods * 48 frames/period(=1ms w/ 48k sample rate) * 2ch *4(float) = 15360 bytes -->
+        <usecase id="UC_MMAP_PLAYBACK" dev1="0" dyn_path="true" dsp_vol="false" mmap="true" period="1" period_num="40"/>
         <!-- for output with AUDIO_OUTPUT_FLAG_DEEP_BUFFER, 4 * 20ms buffer -->
         <usecase id="UC_DEEP_BUFFER_PLAYBACK" dev1="5" dyn_path="true" dsp_vol="false" mmap="false" period="20" period_num="4"/>
         <!-- dev1: voice-call downlink dev2: voice-clal uplink -->
diff --git a/audio/panther/config/audio_policy_configuration.xml b/audio/panther/config/audio_policy_configuration.xml
index ac997b5..b2abc72 100644
--- a/audio/panther/config/audio_policy_configuration.xml
+++ b/audio/panther/config/audio_policy_configuration.xml
@@ -60,7 +60,7 @@
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <mixPort name="mmap_no_irq_out" role="source" flags="AUDIO_OUTPUT_FLAG_DIRECT AUDIO_OUTPUT_FLAG_MMAP_NOIRQ">
-                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
+                    <profile name="" format="AUDIO_FORMAT_PCM_FLOAT"
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <mixPort name="incall playback" role="source"
diff --git a/audio/panther/config/audio_policy_configuration_a2dp_offload_disabled.xml b/audio/panther/config/audio_policy_configuration_a2dp_offload_disabled.xml
index dbc00c3..f832eac 100644
--- a/audio/panther/config/audio_policy_configuration_a2dp_offload_disabled.xml
+++ b/audio/panther/config/audio_policy_configuration_a2dp_offload_disabled.xml
@@ -60,7 +60,7 @@
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <mixPort name="mmap_no_irq_out" role="source" flags="AUDIO_OUTPUT_FLAG_DIRECT AUDIO_OUTPUT_FLAG_MMAP_NOIRQ">
-                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
+                    <profile name="" format="AUDIO_FORMAT_PCM_FLOAT"
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <mixPort name="incall playback" role="source"
diff --git a/audio/panther/config/audio_policy_configuration_bluetooth_legacy_hal.xml b/audio/panther/config/audio_policy_configuration_bluetooth_legacy_hal.xml
index 342f855..c3c66c4 100644
--- a/audio/panther/config/audio_policy_configuration_bluetooth_legacy_hal.xml
+++ b/audio/panther/config/audio_policy_configuration_bluetooth_legacy_hal.xml
@@ -60,7 +60,7 @@
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <mixPort name="mmap_no_irq_out" role="source" flags="AUDIO_OUTPUT_FLAG_DIRECT AUDIO_OUTPUT_FLAG_MMAP_NOIRQ">
-                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
+                    <profile name="" format="AUDIO_FORMAT_PCM_FLOAT"
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <mixPort name="incall playback" role="source"
diff --git a/audio/ravenclaw/config/audio_platform_configuration.xml b/audio/ravenclaw/config/audio_platform_configuration.xml
index f57c505..5bfa08a 100644
--- a/audio/ravenclaw/config/audio_platform_configuration.xml
+++ b/audio/ravenclaw/config/audio_platform_configuration.xml
@@ -176,8 +176,8 @@
         <usecase id="UC_RAW_PLAYBACK" dev1="23" dyn_path="true" dsp_vol="false" mmap="true" period="64" period_num="32"/>
         <!-- for output with AUDIO_OUTPUT_FLAG_PRIMARY|AUDIO_OUTPUT_FLAG_FAST, 4 * 10ms buffer -->
         <usecase id="UC_LOW_LATENCY_PLAYBACK" dev1="1" dyn_path="true" dsp_vol="false" mmap="false" period="10" period_num="4"/>
-        <!-- for output with AUDIO_OUTPUT_FLAG_MMAP_NOIRQ, 80 periods * 48 frames/period(=1ms w/ 48k sample rate) * 4 bytes/frame = 15360 bytes -->
-        <usecase id="UC_MMAP_PLAYBACK" dev1="0" dyn_path="true" dsp_vol="false" mmap="true" period="1" period_num="80"/>
+        <!-- for output with AUDIO_OUTPUT_FLAG_MMAP_NOIRQ, 40 periods * 48 frames/period(=1ms w/ 48k sample rate) * 2ch *4(float) = 15360 bytes -->
+        <usecase id="UC_MMAP_PLAYBACK" dev1="0" dyn_path="true" dsp_vol="false" mmap="true" period="1" period_num="40"/>
         <!-- for output with AUDIO_OUTPUT_FLAG_DEEP_BUFFER, 4 * 20ms buffer -->
         <usecase id="UC_DEEP_BUFFER_PLAYBACK" dev1="5" dyn_path="true" dsp_vol="false" mmap="false" period="20" period_num="4"/>
         <!-- dev1: voice-call downlink dev2: voice-clal uplink -->
diff --git a/audio/ravenclaw/config/audio_policy_configuration.xml b/audio/ravenclaw/config/audio_policy_configuration.xml
index 405caec..63084ef 100644
--- a/audio/ravenclaw/config/audio_policy_configuration.xml
+++ b/audio/ravenclaw/config/audio_policy_configuration.xml
@@ -60,7 +60,7 @@
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <mixPort name="mmap_no_irq_out" role="source" flags="AUDIO_OUTPUT_FLAG_DIRECT AUDIO_OUTPUT_FLAG_MMAP_NOIRQ">
-                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
+                    <profile name="" format="AUDIO_FORMAT_PCM_FLOAT"
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <!--mixPort name="incall playback" role="source"
diff --git a/audio/ravenclaw/config/audio_policy_configuration_a2dp_offload_disabled.xml b/audio/ravenclaw/config/audio_policy_configuration_a2dp_offload_disabled.xml
index 627ded9..c46d7c2 100644
--- a/audio/ravenclaw/config/audio_policy_configuration_a2dp_offload_disabled.xml
+++ b/audio/ravenclaw/config/audio_policy_configuration_a2dp_offload_disabled.xml
@@ -60,7 +60,7 @@
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <mixPort name="mmap_no_irq_out" role="source" flags="AUDIO_OUTPUT_FLAG_DIRECT AUDIO_OUTPUT_FLAG_MMAP_NOIRQ">
-                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
+                    <profile name="" format="AUDIO_FORMAT_PCM_FLOAT"
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <!--mixPort name="incall playback" role="source"
diff --git a/audio/ravenclaw/config/audio_policy_configuration_bluetooth_legacy_hal.xml b/audio/ravenclaw/config/audio_policy_configuration_bluetooth_legacy_hal.xml
index 5b1414f..e102d57 100644
--- a/audio/ravenclaw/config/audio_policy_configuration_bluetooth_legacy_hal.xml
+++ b/audio/ravenclaw/config/audio_policy_configuration_bluetooth_legacy_hal.xml
@@ -60,7 +60,7 @@
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <mixPort name="mmap_no_irq_out" role="source" flags="AUDIO_OUTPUT_FLAG_DIRECT AUDIO_OUTPUT_FLAG_MMAP_NOIRQ">
-                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
+                    <profile name="" format="AUDIO_FORMAT_PCM_FLOAT"
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <!--mixPort name="incall playback" role="source"