e3q: Fix Bluetooth audio

Change-Id: Ic3043dd2aeeeeb7f0c91da8b0c43c78bc5140cee

audio/impl/ParametersUtil.cpp

@@ -0,0 +1,178 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "core/default/ParametersUtil.h"
+#include "core/default/Util.h"
+
+#include <system/audio.h>
+
+#include <util/CoreUtils.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace CORE_TYPES_CPP_VERSION {
+namespace implementation {
+
+/** Converts a status_t in Result according to the rules of AudioParameter::get*
+ * Note: Static method and not private method to avoid leaking status_t dependency
+ */
+static Result getHalStatusToResult(status_t status) {
+    switch (status) {
+        case OK:
+            return Result::OK;
+        case BAD_VALUE:  // Nothing was returned, probably because the HAL does
+                         // not handle it
+            return Result::NOT_SUPPORTED;
+        case INVALID_OPERATION:  // Conversion from string to the requested type
+                                 // failed
+            return Result::INVALID_ARGUMENTS;
+        default:  // Should not happen
+            ALOGW("Unexpected status returned by getParam: %u", status);
+            return Result::INVALID_ARGUMENTS;
+    }
+}
+
+Result ParametersUtil::getParam(const char* name, bool* value) {
+    String8 halValue;
+    Result retval = getParam(name, &halValue);
+    *value = false;
+    if (retval == Result::OK) {
+        if (halValue.length() == 0) {
+            return Result::NOT_SUPPORTED;
+        }
+        *value = !(halValue == AudioParameter::valueOff);
+    }
+    return retval;
+}
+
+Result ParametersUtil::getParam(const char* name, int* value) {
+    const String8 halName(name);
+    AudioParameter keys;
+    keys.addKey(halName);
+    std::unique_ptr<AudioParameter> params = getParams(keys);
+    return getHalStatusToResult(params->getInt(halName, *value));
+}
+
+Result ParametersUtil::getParam(const char* name, String8* value, AudioParameter context) {
+    const String8 halName(name);
+    context.addKey(halName);
+    std::unique_ptr<AudioParameter> params = getParams(context);
+    return getHalStatusToResult(params->get(halName, *value));
+}
+
+void ParametersUtil::getParametersImpl(
+    const hidl_vec<ParameterValue>& context, const hidl_vec<hidl_string>& keys,
+    std::function<void(Result retval, const hidl_vec<ParameterValue>& parameters)> cb) {
+    AudioParameter halKeys;
+    for (auto& pair : context) {
+        halKeys.add(String8(pair.key.c_str()), String8(pair.value.c_str()));
+    }
+    for (size_t i = 0; i < keys.size(); ++i) {
+        halKeys.addKey(String8(keys[i].c_str()));
+    }
+    std::unique_ptr<AudioParameter> halValues = getParams(halKeys);
+    Result retval =
+        (keys.size() == 0 || halValues->size() != 0) ? Result::OK : Result::NOT_SUPPORTED;
+    hidl_vec<ParameterValue> result;
+    result.resize(halValues->size());
+    String8 halKey, halValue;
+    for (size_t i = 0; i < halValues->size(); ++i) {
+        status_t status = halValues->getAt(i, halKey, halValue);
+        if (status != OK) {
+            result.resize(0);
+            retval = getHalStatusToResult(status);
+            break;
+        }
+        result[i].key = halKey.c_str();
+        result[i].value = halValue.c_str();
+    }
+    cb(retval, result);
+}
+
+std::unique_ptr<AudioParameter> ParametersUtil::getParams(const AudioParameter& keys) {
+    String8 paramsAndValues;
+    char* halValues = halGetParameters(keys.keysToString().c_str());
+    if (halValues != NULL) {
+        paramsAndValues = halValues;
+        free(halValues);
+    } else {
+        paramsAndValues.clear();
+    }
+    return std::unique_ptr<AudioParameter>(new AudioParameter(paramsAndValues));
+}
+
+Result ParametersUtil::setParam(const char* name, const char* value) {
+    AudioParameter param;
+    param.add(String8(name), String8(value));
+    return setParams(param);
+}
+
+Result ParametersUtil::setParam(const char* name, bool value) {
+    AudioParameter param;
+    param.add(String8(name), String8(value ? AudioParameter::valueOn : AudioParameter::valueOff));
+    return setParams(param);
+}
+
+Result ParametersUtil::setParam(const char* name, int value) {
+    AudioParameter param;
+    param.addInt(String8(name), value);
+    return setParams(param);
+}
+
+Result ParametersUtil::setParam(const char* name, float value) {
+    AudioParameter param;
+    param.addFloat(String8(name), value);
+    return setParams(param);
+}
+
+Result ParametersUtil::setParametersImpl(const hidl_vec<ParameterValue>& context,
+                                         const hidl_vec<ParameterValue>& parameters) {
+    AudioParameter params;
+    for (auto& pair : context) {
+        params.add(String8(pair.key.c_str()), String8(pair.value.c_str()));
+    }
+    for (size_t i = 0; i < parameters.size(); ++i) {
+        if (parameters[i].key == "bt_wbs") {
+            params.add(String8("g_sco_samplerate"),
+                       String8(parameters[i].value == AudioParameter::valueOn ? "16000" : "8000"));
+        }
+        params.add(String8(parameters[i].key.c_str()), String8(parameters[i].value.c_str()));
+    }
+    return setParams(params);
+}
+
+Result ParametersUtil::setParam(const char* name, const DeviceAddress& address) {
+    audio_devices_t halDeviceType;
+    char halDeviceAddress[AUDIO_DEVICE_MAX_ADDRESS_LEN];
+    if (CoreUtils::deviceAddressToHal(address, &halDeviceType, halDeviceAddress) != NO_ERROR) {
+        return Result::INVALID_ARGUMENTS;
+    }
+    AudioParameter params{String8(halDeviceAddress)};
+    params.addInt(String8(name), halDeviceType);
+    return setParams(params);
+}
+
+Result ParametersUtil::setParams(const AudioParameter& param) {
+    int halStatus = halSetParameters(param.toString().c_str());
+    return util::analyzeStatus(halStatus);
+}
+
+}  // namespace implementation
+}  // namespace CORE_TYPES_CPP_VERSION
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android