/* -*- Mode: C++; tab-width: 2; 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 GMPUtils_h_

#define GMPUtils_h_

#include "mozilla/UniquePtr.h"

#include "mozilla/RefPtr.h"

#include "mozilla/AbstractThread.h"

#include "nsStringFwd.h"

#include "nsTArray.h"

#include "nsCOMPtr.h"

#include "nsClassHashtable.h"

#define CHROMIUM_CDM_API_BACKWARD_COMPAT "chromium-cdm9-host4"

// TODO: The following should be used as we switch to cdm10

#define CHROMIUM_CDM_API "chromium-cdm10-host4"

class nsIFile;

class nsIDirectoryEnumerator;

namespace mozilla {

template<typename T>

struct DestroyPolicy

{

  void operator()(T* aGMPObject) const {

    aGMPObject->Destroy();

  }

Unexecuted instantiation: mozilla::DestroyPolicy<GMPVideoi420Frame>::operator()(GMPVideoi420Frame*) const

Unexecuted instantiation: mozilla::DestroyPolicy<GMPVideoEncodedFrame>::operator()(GMPVideoEncodedFrame*) const

};

template<typename T>

using GMPUniquePtr = mozilla::UniquePtr<T, DestroyPolicy<T>>;

void

SplitAt(const char* aDelims,

        const nsACString& aInput,

        nsTArray<nsCString>& aOutTokens);

nsCString

ToHexString(const nsTArray<uint8_t>& aBytes);

nsCString

ToHexString(const uint8_t* aBytes, uint32_t aLength);

bool

FileExists(nsIFile* aFile);

// Enumerate directory entries for a specified path.

class DirectoryEnumerator {

public:

  enum Mode {

    DirsOnly, // Enumeration only includes directories.

    FilesAndDirs // Enumeration includes directories and non-directory files.

  };

  DirectoryEnumerator(nsIFile* aPath, Mode aMode);

  already_AddRefed<nsIFile> Next();

private:

  Mode mMode;

  nsCOMPtr<nsIDirectoryEnumerator> mIter;

};

class GMPInfoFileParser {

public:

  bool Init(nsIFile* aFile);

  bool Contains(const nsCString& aKey) const;

  nsCString Get(const nsCString& aKey) const;

private:

  nsClassHashtable<nsCStringHashKey, nsCString> mValues;

};

bool

ReadIntoString(nsIFile* aFile,

               nsCString& aOutDst,

               size_t aMaxLength);

bool

HaveGMPFor(const nsCString& aAPI,

           nsTArray<nsCString>&& aTags);

void

LogToConsole(const nsAString& aMsg);

RefPtr<AbstractThread>

GetGMPAbstractThread();

// Returns the number of bytes required to store an aWidth x aHeight image in

// I420 format, padded so that the width and height are multiples of 16.

size_t

I420FrameBufferSizePadded(int32_t aWidth, int32_t aHeight);

} // namespace mozilla

#endif