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/* -*- Mode: C++; tab-width: 50; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef _OPENSLESPROVIDER_H_
#define _OPENSLESPROVIDER_H_

#include <SLES/OpenSLES.h>
#include <mozilla/Types.h>

#ifdef __cplusplus
extern "C" {
#endif
extern MOZ_EXPORT SLresult
mozilla_get_sles_engine(SLObjectItf* aObjectm, SLuint32 aOptionCount,
                        const SLEngineOption* aOptions);
extern MOZ_EXPORT void mozilla_destroy_sles_engine(SLObjectItf* aObjectm);
/* Realize is always in synchronous mode. */
extern MOZ_EXPORT SLresult mozilla_realize_sles_engine(SLObjectItf aObjectm);
#ifdef __cplusplus
}
#endif

#ifdef __cplusplus
#  include "mozilla/Mutex.h"

extern mozilla::LazyLogModule gOpenSLESProviderLog;

namespace mozilla {

class OpenSLESProvider {
 public:
  static SLresult Get(SLObjectItf* aObjectm, SLuint32 aOptionCount,
                      const SLEngineOption* aOptions);
  static void Destroy(SLObjectItf* aObjectm);
  static SLresult Realize(SLObjectItf aObjectm);

 private:
  OpenSLESProvider();
  ~OpenSLESProvider();
  OpenSLESProvider(OpenSLESProvider const&);  // NO IMPLEMENTATION
  void operator=(OpenSLESProvider const&);    // NO IMPLEMENTATION
  static OpenSLESProvider& getInstance();
  SLresult GetEngine(SLObjectItf* aObjectm, SLuint32 aOptionCount,
                     const SLEngineOption* aOptions);
  SLresult ConstructEngine(SLObjectItf* aObjectm, SLuint32 aOptionCount,
                           const SLEngineOption* aOptions);
  SLresult RealizeEngine(SLObjectItf aObjectm);
  void DestroyEngine(SLObjectItf* aObjectm);

  // Protect all our internal variables
  mozilla::Mutex mLock;
  SLObjectItf mSLEngine;
  int mSLEngineUsers;
  bool mIsRealized;
  void* mOpenSLESLib;
};

}  // namespace mozilla
#endif  // cplusplus

#endif /* _OPENSLESPROVIDER_H_ */