ChromiumCDMAdapter.h

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/* -*- 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 ChromiumAdapter_h_

#define ChromiumAdapter_h_

#include "GMPLoader.h"

#include "prlink.h"

#include "GMPUtils.h"

#include "nsTArray.h"

#include "content_decryption_module_ext.h"

#include "nsString.h"

#include <utility>

struct GMPPlatformAPI;

namespace mozilla {

#if defined(XP_WIN)

typedef nsString HostFileString;

#else

typedef nsCString HostFileString;

#endif

class HostFile {

 public:

  explicit HostFile(const nsCString& aPath);

  HostFile(HostFile&& aOther);

  ~HostFile();

  const HostFileString& Path() const { return mPath; }

  cdm::PlatformFile TakePlatformFile();

 private:

  const HostFileString mPath;

  cdm::PlatformFile mFile = cdm::kInvalidPlatformFile;

};

struct HostFileData {

  HostFileData(HostFile&& aBinary, HostFile&& aSig)

      : mBinary(std::move(aBinary)), mSig(std::move(aSig)) {}

  HostFileData(HostFileData&& aOther)

      : mBinary(std::move(aOther.mBinary)), mSig(std::move(aOther.mSig)) {}

  ~HostFileData() = default;

  HostFile mBinary;

  HostFile mSig;

};

class ChromiumCDMAdapter : public gmp::GMPAdapter {

 public:

  explicit ChromiumCDMAdapter(

      nsTArray<std::pair<nsCString, nsCString>>&& aHostPathPairs);

  void SetAdaptee(PRLibrary* aLib) override;

  // These are called in place of the corresponding GMP API functions.

  GMPErr GMPInit(const GMPPlatformAPI* aPlatformAPI) override;

  GMPErr GMPGetAPI(const char* aAPIName, void* aHostAPI, void** aPluginAPI,

                   const nsACString& aKeySystem) override;

  void GMPShutdown() override;

  static bool Supports(int32_t aModuleVersion, int32_t aInterfaceVersion,

                       int32_t aHostVersion);

 private:

  void PopulateHostFiles(

      nsTArray<std::pair<nsCString, nsCString>>&& aHostFilePaths);

  PRLibrary* mLib = nullptr;

  nsTArray<HostFileData> mHostFiles;

};

}  // namespace mozilla

#endif  // ChromiumAdapter_h_