/*
 Derived from source code of TrueCrypt 7.1a, which is
 Copyright (c) 2008-2012 TrueCrypt Developers Association and which is governed
 by the TrueCrypt License 3.0.

 Modifications and additions to the original source code (contained in this file)
 and all other portions of this file are Copyright (c) 2013-2017 IDRIX
 and are governed by the Apache License 2.0 the full text of which is
 contained in the file License.txt included in VeraCrypt binary and source
 code distribution packages.
*/

#ifndef TC_HEADER_ENCRYPTION_THREAD_POOL
#define TC_HEADER_ENCRYPTION_THREAD_POOL

#include "Tcdefs.h"
#include "Crypto.h"

#ifdef __cplusplus
extern "C" {
#endif

typedef enum
{
	EncryptDataUnitsWork,
	DecryptDataUnitsWork,
	DeriveKeyWork,
	ReadVolumeHeaderFinalizationWork
} EncryptionThreadPoolWorkType;

#ifndef DEVICE_DRIVER
size_t GetCpuCount (WORD* pGroupCount);
#endif

void EncryptionThreadPoolBeginKeyDerivation (TC_EVENT *completionEvent, TC_EVENT *noOutstandingWorkItemEvent, LONG *completionFlag, LONG *outstandingWorkItemCount, int pkcs5Prf, unsigned char *password, int passwordLength, unsigned char *salt, int iterationCount, unsigned char *derivedKey);
void EncryptionThreadPoolBeginReadVolumeHeaderFinalization (TC_EVENT *keyDerivationCompletedEvent, TC_EVENT *noOutstandingWorkItemEvent, LONG* outstandingWorkItemCount, void* keyInfoBuffer, int keyInfoBufferSize, void* keyDerivationWorkItems, int keyDerivationWorkItemsSize);
void EncryptionThreadPoolDoWork (EncryptionThreadPoolWorkType type, uint8 *data, const UINT64_STRUCT *startUnitNo, uint32 unitCount, PCRYPTO_INFO cryptoInfo);
BOOL EncryptionThreadPoolStart (size_t encryptionFreeCpuCount);
void EncryptionThreadPoolStop ();
size_t GetEncryptionThreadCount ();
size_t GetMaxEncryptionThreadCount ();
BOOL IsEncryptionThreadPoolRunning ();

#ifdef __cplusplus
}
#endif

#endif // TC_HEADER_ENCRYPTION_THREAD_POOL