media/gmp-clearkey/0.1/ClearKeyUtils.h
author Gregory Szorc <gps@mozilla.com>
Thu, 19 Feb 2015 10:58:41 -0800
changeset 245738 c97c977c92b97c9585011651b13a088f0cd4ed4f
parent 233073 ce51003483e4df7dd5afa6abb5fe4800f5795a8c
child 255798 38f4f036b6119f8c3d00480426c505fb07a80306
permissions -rw-r--r--
Bug 1132771 - moz.build fixups to enable execution in no config mode Various moz.build files fail to execute when a build config is not present. Many of these are due to assuming certain CONFIG entries are present. This patch attempts to fix that and enable every moz.build to be read without a build config.

/* 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 __ClearKeyUtils_h__
#define __ClearKeyUtils_h__

#include <stdint.h>
#include <string>
#include <vector>
#include "gmp-decryption.h"

#define CLEARKEY_KEY_LEN ((size_t)16)

#if 0
void CK_Log(const char* aFmt, ...);
#define CK_LOGE(...) CK_Log(__VA_ARGS__)
#define CK_LOGD(...) CK_Log(__VA_ARGS__)
#define CK_LOGW(...) CK_Log(__VA_ARGS__)
#else
#define CK_LOGE(...)
#define CK_LOGD(...)
#define CK_LOGW(...)
#endif

struct GMPPlatformAPI;
extern GMPPlatformAPI* GetPlatform();

typedef std::vector<uint8_t> KeyId;
typedef std::vector<uint8_t> Key;

struct KeyIdPair
{
  KeyId mKeyId;
  Key mKey;
};

class ClearKeyUtils
{
public:
  static void DecryptAES(const std::vector<uint8_t>& aKey,
                         std::vector<uint8_t>& aData, std::vector<uint8_t>& aIV);

  static void ParseInitData(const uint8_t* aInitData, uint32_t aInitDataSize,
                            std::vector<Key>& aOutKeys);

  static void MakeKeyRequest(const std::vector<KeyId>& aKeyIds,
                             std::string& aOutRequest,
                             GMPSessionType aSessionType);

  static bool ParseJWK(const uint8_t* aKeyData, uint32_t aKeyDataSize,
                       std::vector<KeyIdPair>& aOutKeys,
                       GMPSessionType aSessionType);
  static const char* SessionTypeToString(GMPSessionType aSessionType);

  static bool IsValidSessionId(const char* aBuff, uint32_t aLength);
};

template<class Container, class Element>
inline bool
Contains(const Container& aContainer, const Element& aElement)
{
  return aContainer.find(aElement) != aContainer.end();
}

#endif // __ClearKeyUtils_h__