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/*
* Copyright (C) 2023 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.
*/
#pragma once
#include <string>
#include <string_view>
#include <variant>
#include <vector>
#include <aidl/android/hardware/audio/core/IModule.h>
#include <aidl/android/hardware/audio/core/IStreamCommon.h>
#include <aidl/android/media/audio/IHalAdapterVendorExtension.h>
#include <android-base/expected.h>
#include <error/Result.h>
#include <media/AudioParameter.h>
#include <utils/String16.h>
#include <utils/Vector.h>
namespace android {
class Args {
public:
explicit Args(const Vector<String16>& args)
: mValues(args.size()), mPtrs(args.size()) {
for (size_t i = 0; i < args.size(); ++i) {
mValues[i] = std::string(String8(args[i]));
mPtrs[i] = mValues[i].c_str();
}
}
const char** args() { return mPtrs.data(); }
private:
std::vector<std::string> mValues;
std::vector<const char*> mPtrs;
};
class ConversionHelperAidl {
protected:
ConversionHelperAidl(std::string_view className) : mClassName(className) {}
const std::string& getClassName() const {
return mClassName;
}
const std::string mClassName;
};
// 'action' must accept a value of type 'T' and return 'status_t'.
// The function returns 'true' if the parameter was found, and the action has succeeded.
// The function returns 'false' if the parameter was not found.
// Any errors get propagated, if there are errors it means the parameter was found.
template<typename T, typename F>
error::Result<bool> filterOutAndProcessParameter(
AudioParameter& parameters, const String8& key, const F& action) {
if (parameters.containsKey(key)) {
T value;
status_t status = parameters.get(key, value);
if (status == OK) {
parameters.remove(key);
status = action(value);
if (status == OK) return true;
}
return base::unexpected(status);
}
return false;
}
// Must use the same order of elements as IHalAdapterVendorExtension::ParameterScope.
using VendorParametersRecipient = std::variant<
std::shared_ptr<::aidl::android::hardware::audio::core::IModule>,
std::shared_ptr<::aidl::android::hardware::audio::core::IStreamCommon>>;
status_t parseAndGetVendorParameters(
std::shared_ptr<::aidl::android::media::audio::IHalAdapterVendorExtension> vendorExt,
const VendorParametersRecipient& recipient,
const AudioParameter& parameterKeys,
String8* values);
status_t parseAndSetVendorParameters(
std::shared_ptr<::aidl::android::media::audio::IHalAdapterVendorExtension> vendorExt,
const VendorParametersRecipient& recipient,
const AudioParameter& parameters);
} // namespace android