upload android base code part1

android/frameworks/av/services/oboeservice/AAudioThread.cpp

@@ -0,0 +1,86 @@
+/*
+ * 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.
+ */
+
+#define LOG_TAG "AAudioService"
+//#define LOG_NDEBUG 0
+#include <utils/Log.h>
+
+#include <pthread.h>
+
+#include <aaudio/AAudio.h>
+#include <utility/AAudioUtilities.h>
+
+#include "AAudioThread.h"
+
+using namespace aaudio;
+
+
+AAudioThread::AAudioThread()
+    : mRunnable(nullptr)
+    , mHasThread(false) {
+    // mThread is a pthread_t of unknown size so we need memset().
+    memset(&mThread, 0, sizeof(mThread));
+}
+
+void AAudioThread::dispatch() {
+    if (mRunnable != nullptr) {
+        mRunnable->run();
+    } else {
+        run();
+    }
+}
+
+// This is the entry point for the new thread created by createThread().
+// It converts the 'C' function call to a C++ method call.
+static void * AAudioThread_internalThreadProc(void *arg) {
+    AAudioThread *aaudioThread = (AAudioThread *) arg;
+    aaudioThread->dispatch();
+    return nullptr;
+}
+
+aaudio_result_t AAudioThread::start(Runnable *runnable) {
+    if (mHasThread) {
+        ALOGE("AAudioThread::start() - mHasThread already true");
+        return AAUDIO_ERROR_INVALID_STATE;
+    }
+    // mRunnable will be read by the new thread when it starts.
+    // pthread_create() forces a memory synchronization so mRunnable does not need to be atomic.
+    mRunnable = runnable;
+    int err = pthread_create(&mThread, nullptr, AAudioThread_internalThreadProc, this);
+    if (err != 0) {
+        ALOGE("AAudioThread::start() - pthread_create() returned %d %s", err, strerror(err));
+        return AAudioConvert_androidToAAudioResult(-err);
+    } else {
+        mHasThread = true;
+        return AAUDIO_OK;
+    }
+}
+
+aaudio_result_t AAudioThread::stop() {
+    if (!mHasThread) {
+        ALOGE("AAudioThread::stop() but no thread running");
+        return AAUDIO_ERROR_INVALID_STATE;
+    }
+    int err = pthread_join(mThread, nullptr);
+    mHasThread = false;
+    if (err != 0) {
+        ALOGE("AAudioThread::stop() - pthread_join() returned %d %s", err, strerror(err));
+        return AAudioConvert_androidToAAudioResult(-err);
+    } else {
+        return AAUDIO_OK;
+    }
+}
+