commit 7e3c0837cf8e2311e38ce4e47e18b88bc1cdce28
author Eric Laurent <elaurent@google.com> Thu Nov 30 15:04:50 2023 +0100
committer Eric Laurent <elaurent@google.com> Fri Dec 01 11:46:34 2023 +0100
tree 1387cc54bde83fac572c2b28c25b68478ec6b0c2
parent 7055556432b3f8dc1f9a7ccbc060168b6cef1525

AudioPolicyManager: add support for Bluetooth LE audio codec selection

Add support for Bluetooth LE audio codec reconfiguration similarly to
what is supported for A2DP.

Bug: 309909149
Test: connect BT LE device and check correct codec selection
Change-Id: I1759314fcf0e757db617980aa2129e8bd8af53c5

media/libaudiohal/impl/DeviceHalAidl.cpp

diff --git a/media/libaudiohal/impl/DeviceHalAidl.cpp b/media/libaudiohal/impl/DeviceHalAidl.cpp
index a58ce1b..6a6557c 100644
--- a/media/libaudiohal/impl/DeviceHalAidl.cpp
+++ b/media/libaudiohal/impl/DeviceHalAidl.cpp
@@ -267,6 +267,9 @@
     if (status_t status = filterAndRetrieveBtA2dpParameters(parameterKeys, &result); status != OK) {
         ALOGW("%s: filtering or retrieving BT A2DP parameters failed: %d", __func__, status);
     }
+    if (status_t status = filterAndRetrieveBtLeParameters(parameterKeys, &result); status != OK) {
+        ALOGW("%s: filtering or retrieving BT LE parameters failed: %d", __func__, status);
+    }
     *values = result.toString();
     return parseAndGetVendorParameters(mVendorExt, mModule, parameterKeys, values);
 }
@@ -988,6 +991,23 @@
     return OK;
 }
 
+status_t DeviceHalAidl::filterAndRetrieveBtLeParameters(
+        AudioParameter &keys, AudioParameter *result) {
+    if (String8 key = String8(AudioParameter::keyReconfigLeSupported); keys.containsKey(key)) {
+        keys.remove(key);
+        if (mBluetoothLe != nullptr) {
+            bool supports;
+            RETURN_STATUS_IF_ERROR(statusTFromBinderStatus(
+                            mBluetoothLe->supportsOffloadReconfiguration(&supports)));
+            result->addInt(key, supports ? 1 : 0);
+        } else {
+            ALOGI("%s: no mBluetoothLe on %s", __func__, mInstance.c_str());
+            result->addInt(key, 0);
+        }
+    }
+    return OK;
+}
+
 status_t DeviceHalAidl::filterAndUpdateBtA2dpParameters(AudioParameter &parameters) {
     std::optional<bool> a2dpEnabled;
     std::optional<std::vector<VendorParameter>> reconfigureOffload;
@@ -1069,6 +1089,7 @@
 
 status_t DeviceHalAidl::filterAndUpdateBtLeParameters(AudioParameter &parameters) {
     std::optional<bool> leEnabled;
+    std::optional<std::vector<VendorParameter>> reconfigureOffload;
     (void)VALUE_OR_RETURN_STATUS(filterOutAndProcessParameter<String8>(
                     parameters, String8(AudioParameter::keyBtLeSuspended),
                     [&leEnabled](const String8& trueOrFalse) {
@@ -1083,9 +1104,27 @@
                                 AudioParameter::keyBtLeSuspended, trueOrFalse.c_str());
                         return BAD_VALUE;
                     }));
+    (void)VALUE_OR_RETURN_STATUS(filterOutAndProcessParameter<String8>(
+                    parameters, String8(AudioParameter::keyReconfigLe),
+                    [&](const String8& value) -> status_t {
+                        if (mVendorExt != nullptr) {
+                            std::vector<VendorParameter> result;
+                            RETURN_STATUS_IF_ERROR(statusTFromBinderStatus(
+                                    mVendorExt->parseBluetoothLeReconfigureOffload(
+                                            std::string(value.c_str()), &result)));
+                            reconfigureOffload = std::move(result);
+                        } else {
+                            reconfigureOffload = std::vector<VendorParameter>();
+                        }
+                        return OK;
+                    }));
     if (mBluetoothLe != nullptr && leEnabled.has_value()) {
         return statusTFromBinderStatus(mBluetoothLe->setEnabled(leEnabled.value()));
     }
+    if (mBluetoothLe != nullptr && reconfigureOffload.has_value()) {
+        return statusTFromBinderStatus(mBluetoothLe->reconfigureOffload(
+                        reconfigureOffload.value()));
+    }
     return OK;
 }
 

media/libaudiohal/impl/DeviceHalAidl.h

diff --git a/media/libaudiohal/impl/DeviceHalAidl.h b/media/libaudiohal/impl/DeviceHalAidl.h
index 9493e47..f705db7 100644
--- a/media/libaudiohal/impl/DeviceHalAidl.h
+++ b/media/libaudiohal/impl/DeviceHalAidl.h
@@ -207,6 +207,7 @@
     ~DeviceHalAidl() override = default;
 
     status_t filterAndRetrieveBtA2dpParameters(AudioParameter &keys, AudioParameter *result);
+    status_t filterAndRetrieveBtLeParameters(AudioParameter &keys, AudioParameter *result);
     status_t filterAndUpdateBtA2dpParameters(AudioParameter &parameters);
     status_t filterAndUpdateBtHfpParameters(AudioParameter &parameters);
     status_t filterAndUpdateBtLeParameters(AudioParameter &parameters);