libaudiohal: Implement simple HIDL client
This client requires both HIDL client and server to be of the same
ABI version (e.g. 32-bit).
EffectHalHidl::process and EffectHalHidl::processReverse are stubs.
Some extra warnings are logged due to unimplemented functions
in the legacy HAL.
Bug: 30222631
Change-Id: Id074131dec6d6c4f1031695abcf3ea066e92a5af
Test: Play Music (play / EQ), YouTube, Loopback RTLT, Ok Google on N5X
diff --git a/media/libaudiohal/ConversionHelperHidl.cpp b/media/libaudiohal/ConversionHelperHidl.cpp
new file mode 100644
index 0000000..ebbc02c
--- /dev/null
+++ b/media/libaudiohal/ConversionHelperHidl.cpp
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2016 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 <string.h>
+
+#define LOG_TAG "HalHidl"
+#include <media/AudioParameter.h>
+#include <utils/Log.h>
+
+#include "ConversionHelperHidl.h"
+
+using ::android::hardware::audio::V2_0::Result;
+
+namespace android {
+
+// static
+status_t ConversionHelperHidl::keysFromHal(const String8& keys, hidl_vec<hidl_string> *hidlKeys) {
+ AudioParameter halKeys(keys);
+ if (halKeys.size() == 0) return BAD_VALUE;
+ hidlKeys->resize(halKeys.size());
+ for (size_t i = 0; i < halKeys.size(); ++i) {
+ String8 key;
+ status_t status = halKeys.getAt(i, key);
+ if (status != OK) return status;
+ (*hidlKeys)[i] = key.string();
+ }
+ return OK;
+}
+
+// static
+status_t ConversionHelperHidl::parametersFromHal(
+ const String8& kvPairs, hidl_vec<ParameterValue> *hidlParams) {
+ AudioParameter params(kvPairs);
+ if (params.size() == 0) return BAD_VALUE;
+ hidlParams->resize(params.size());
+ for (size_t i = 0; i < params.size(); ++i) {
+ String8 key, value;
+ status_t status = params.getAt(i, key, value);
+ if (status != OK) return status;
+ (*hidlParams)[i].key = key.string();
+ (*hidlParams)[i].value = value.string();
+ }
+ return OK;
+}
+
+// static
+void ConversionHelperHidl::parametersToHal(
+ const hidl_vec<ParameterValue>& parameters, String8 *values) {
+ AudioParameter params;
+ for (size_t i = 0; i < parameters.size(); ++i) {
+ params.add(String8(parameters[i].key.c_str()), String8(parameters[i].value.c_str()));
+ }
+ values->setTo(params.toString());
+}
+
+ConversionHelperHidl::ConversionHelperHidl(const char* className)
+ : mClassName(className) {
+}
+
+// static
+status_t ConversionHelperHidl::analyzeResult(const Result& result) {
+ switch (result) {
+ case Result::OK: return OK;
+ case Result::INVALID_ARGUMENTS: return BAD_VALUE;
+ case Result::INVALID_STATE: return NOT_ENOUGH_DATA;
+ case Result::NOT_INITIALIZED: return NO_INIT;
+ case Result::NOT_SUPPORTED: return INVALID_OPERATION;
+ default: return NO_INIT;
+ }
+}
+
+status_t ConversionHelperHidl::processReturn(const char* funcName, const Status& status) {
+ const status_t st = status.transactionError();
+ ALOGE_IF(st, "%s %p %s: %s (from rpc)", mClassName, this, funcName, strerror(-st));
+ return st;
+}
+
+status_t ConversionHelperHidl::processReturn(
+ const char* funcName, const Status& status, hardware::audio::V2_0::Result retval) {
+ const status_t st = status.isOk() ? analyzeResult(retval) : status.transactionError();
+ ALOGE_IF(st, "%s %p %s: %s (from %s)",
+ mClassName, this, funcName, strerror(-st), status.isOk() ? "hal" : "rpc");
+ return st;
+}
+
+} // namespace android