Add CubebUtils namespace and hook up cubeb logging

1 files changed, 75 insertions, 0 deletions

diff --git a/Source/Core/AudioCommon/CubebUtils.cpp b/Source/Core/AudioCommon/CubebUtils.cpp
new file mode 100644
index 0000000000..07f4f530d6
--- /dev/null
+++ b/Source/Core/AudioCommon/CubebUtils.cpp
@@ -0,0 +1,75 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include <cstdarg>
+#include <cstddef>
+#include <cstring>
+
+#include "AudioCommon/CubebUtils.h"
+#include "Common/CommonPaths.h"
+#include "Common/Logging/Log.h"
+#include "Common/Logging/LogManager.h"
+#include "Common/StringUtil.h"
+
+#include <cubeb/cubeb.h>
+
+static ptrdiff_t s_path_cutoff_point = 0;
+
+static void LogCallback(const char* format, ...)
+{
+  if (!LogManager::GetInstance())
+    return;
+
+  va_list args;
+  va_start(args, format);
+
+  const char* filename = va_arg(args, const char*) + s_path_cutoff_point;
+  int lineno = va_arg(args, int);
+  std::string adapted_format = StripSpaces(format + strlen("%s:%d:"));
+
+  LogManager::GetInstance()->LogWithFullPath(LogTypes::LNOTICE, LogTypes::AUDIO, filename, lineno,
+                                             adapted_format.c_str(), args);
+  va_end(args);
+}
+
+static void DestroyContext(cubeb* ctx)
+{
+  cubeb_destroy(ctx);
+  if (cubeb_set_log_callback(CUBEB_LOG_DISABLED, nullptr) != CUBEB_OK)
+  {
+    ERROR_LOG(AUDIO, "Error removing cubeb log callback");
+  }
+}
+
+std::shared_ptr<cubeb> CubebUtils::GetContext()
+{
+  static std::weak_ptr<cubeb> weak;
+
+  std::shared_ptr<cubeb> shared = weak.lock();
+  // Already initialized
+  if (shared)
+    return shared;
+
+  const char* filename = __FILE__;
+  const char* match_point = strstr(filename, DIR_SEP "Source" DIR_SEP "Core" DIR_SEP);
+  if (match_point)
+  {
+    s_path_cutoff_point = match_point - filename + strlen(DIR_SEP "Externals" DIR_SEP);
+  }
+  if (cubeb_set_log_callback(CUBEB_LOG_NORMAL, LogCallback) != CUBEB_OK)
+  {
+    ERROR_LOG(AUDIO, "Error setting cubeb log callback");
+  }
+
+  cubeb* ctx;
+  if (cubeb_init(&ctx, "Dolphin", nullptr) != CUBEB_OK)
+  {
+    ERROR_LOG(AUDIO, "Error initializing cubeb library");
+    return nullptr;
+  }
+  INFO_LOG(AUDIO, "Cubeb initialized using %s backend", cubeb_get_backend_id(ctx));
+
+  weak = shared = {ctx, DestroyContext};
+  return shared;
+}