Fix bugs in handling opus in agora sink

Author: FelonEkonom

agora_sdk_sc/include/AgoraAtomicOps.h

@@ -0,0 +1,73 @@
+// Copyright (c) 2020 Agora.io. All rights reserved
+
+// This program is confidential and proprietary to Agora.io.
+// And may not be copied, reproduced, modified, disclosed to others, published
+// or used, in whole or in part, without the express prior written permission
+// of Agora.io.
+#pragma once
+
+#if defined(_WIN32)
+// clang-format off
+// clang formating would change include order.
+
+// Include WinSock2.h before including <Windows.h> to maintain consistency with
+// win32.h. To include win32.h directly, it must be broken out into its own
+// build target.
+#include <WinSock2.h>
+#include <Windows.h>
+// clang-format on
+#endif  // _WIN32
+
+namespace agora {
+
+class AtomicOps {
+ public:
+#if defined(_WIN32)
+  // Assumes sizeof(int) == sizeof(LONG), which it is on Win32 and Win64.
+  static int Increment(volatile int* i) {
+    return ::InterlockedIncrement(reinterpret_cast<volatile LONG*>(i));
+  }
+  static int Decrement(volatile int* i) {
+    return ::InterlockedDecrement(reinterpret_cast<volatile LONG*>(i));
+  }
+  static int AcquireLoad(volatile const int* i) { return *i; }
+  static void ReleaseStore(volatile int* i, int value) { *i = value; }
+  static int CompareAndSwap(volatile int* i, int old_value, int new_value) {
+    return ::InterlockedCompareExchange(reinterpret_cast<volatile LONG*>(i),
+                                        new_value, old_value);
+  }
+  // Pointer variants.
+  template <typename T>
+  static T* AcquireLoadPtr(T* volatile* ptr) {
+    return *ptr;
+  }
+  template <typename T>
+  static T* CompareAndSwapPtr(T* volatile* ptr, T* old_value, T* new_value) {
+    return static_cast<T*>(::InterlockedCompareExchangePointer(
+        reinterpret_cast<PVOID volatile*>(ptr), new_value, old_value));
+  }
+#else
+  static int Increment(volatile int* i) { return __sync_add_and_fetch(i, 1); }
+  static int Decrement(volatile int* i) { return __sync_sub_and_fetch(i, 1); }
+  static int AcquireLoad(volatile const int* i) {
+    return __atomic_load_n(i, __ATOMIC_ACQUIRE);
+  }
+  static void ReleaseStore(volatile int* i, int value) {
+    __atomic_store_n(i, value, __ATOMIC_RELEASE);
+  }
+  static int CompareAndSwap(volatile int* i, int old_value, int new_value) {
+    return __sync_val_compare_and_swap(i, old_value, new_value);
+  }
+  // Pointer variants.
+  template <typename T>
+  static T* AcquireLoadPtr(T* volatile* ptr) {
+    return __atomic_load_n(ptr, __ATOMIC_ACQUIRE);
+  }
+  template <typename T>
+  static T* CompareAndSwapPtr(T* volatile* ptr, T* old_value, T* new_value) {
+    return __sync_val_compare_and_swap(ptr, old_value, new_value);
+  }
+#endif  // _WIN32
+};
+
+}  // namespace agora