FFVPXRuntimeLinker.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim:set ts=2 sw=2 sts=2 et cindent: */

/* 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 __FFVPXRuntimeLinker_h__

#define __FFVPXRuntimeLinker_h__

#include "PlatformDecoderModule.h"

#include "PlatformEncoderModule.h"

#include "mozilla/StaticMutex.h"

#include "mozilla/ThreadSafety.h"

#include "ffvpx/tx.h"

struct FFmpegFFTFuncs {

  decltype(av_tx_init)* init;

  decltype(av_tx_uninit)* uninit;

};

namespace mozilla {

class FFVPXRuntimeLinker {

 public:

  static bool Init() MOZ_EXCLUDES(sMutex);

  static already_AddRefed<PlatformDecoderModule> CreateDecoder();

  static already_AddRefed<PlatformEncoderModule> CreateEncoder();

  // Call (on any thread) after Init().

  static void GetFFTFuncs(FFmpegFFTFuncs* aOutFuncs);

 private:

  // Provide critical-section for Init() and sLinkStatus.

  static StaticMutex sMutex;

  // Set once on the main thread and then read from other threads.

  static enum LinkStatus {

    LinkStatus_INIT = 0,

    LinkStatus_FAILED,

    LinkStatus_SUCCEEDED

  } sLinkStatus MOZ_GUARDED_BY(sMutex);

};

}  // namespace mozilla

#endif /* __FFVPXRuntimeLinker_h__ */