/* -*- 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 __FFmpegRuntimeLinker_h__

#define __FFmpegRuntimeLinker_h__

#include "PlatformDecoderModule.h"

namespace mozilla {

class FFmpegRuntimeLinker

{

public:

  static bool Init();

  static already_AddRefed<PlatformDecoderModule> CreateDecoderModule();

  enum LinkStatus

  {

    LinkStatus_INIT = 0,  // Never been linked.

    LinkStatus_SUCCEEDED, // Found a usable library.

    // The following error statuses are sorted from most to least preferred

    // (i.e., if more than one happens, the top one is chosen.)

    LinkStatus_INVALID_FFMPEG_CANDIDATE, // Found ffmpeg with unexpected contents.

    LinkStatus_UNUSABLE_LIBAV57, // Found LibAV 57, which we cannot use.

    LinkStatus_INVALID_LIBAV_CANDIDATE, // Found libav with unexpected contents.

    LinkStatus_OBSOLETE_FFMPEG,

    LinkStatus_OBSOLETE_LIBAV,

    LinkStatus_INVALID_CANDIDATE, // Found some lib with unexpected contents.

    LinkStatus_NOT_FOUND, // Haven't found any library with an expected name.

  };

  static LinkStatus LinkStatusCode() { return sLinkStatus; }

  static const char* LinkStatusString();

  // Library name to which the sLinkStatus applies, or "" if not applicable.

  static const char* LinkStatusLibraryName() { return sLinkStatusLibraryName; }

private:

  static LinkStatus sLinkStatus;

  static const char* sLinkStatusLibraryName;

};

}

#endif // __FFmpegRuntimeLinker_h__