/*

* Copyright (c) 2010 Ixonos Plc.

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - Initial contribution

*

* Contributors:

* Ixonos Plc

*

* Description:  

* Sync codes.

*

*/

#ifndef _SYNC_H_

#define _SYNC_H_

#include "epoclib.h"

#include "biblin.h"

/*

 * Defines

 */

/* Return values */

#define SNC_NO_SYNC  0        /* No synchronization code found */

#define SNC_PSC      1        /* Picture Start Code */

#define SNC_GBSC     2        /* GOB Start Code */

#define SNC_EOS      4        /* End of Sequence */

/*** MPEG-4 REVISION ***/

#define SNC_VIDPACK  5        /* Video Packet resynchronization marker */

#define SNC_VOS      6        /* Video Object Sequence (VOS) Start Code */

#define SNC_VOP      7        /* Video Object Plane (VOP) Start Code */

#define SNC_GOV      8        /* Group of VOPs (GOV) Start Code */

#define SNC_USERDATA 9        /* User Data Start Code */

#define SNC_EOB      10       /* Visual Sequence End Code */

#define SNC_VID      11       /* Other Video Object Header Start Codes */

#define SNC_PATTERN  12       /* The search pattern in sncSeekBitPattern */

/*** End MPEG-4 REVISION ***/

#define SNC_STUFFING 13       /* Stuffing in the end of a buffer containing

                                 one frame */

/* See sncRewindAndSeekNewSync for description. */

#define SNC_DEFAULT_REWIND -1

/*

 * Function prototypes

 */

int sncCheckSync(bibBuffer_t *buffer, int *numStuffBits, int16 *error);

int sncRewindAndSeekNewSync(u_int32 numBitsToRewind, bibBuffer_t *buffer, 

   int16 *error);

int sncSeekFrameSync(bibBuffer_t *buffer, int16 *error);

int sncSeekSync(bibBuffer_t *buffer, int16 *error);

   int sncCheckMpegVOP(bibBuffer_t *buffer, int16 *error);

   int sncCheckMpegSync(bibBuffer_t *buffer, int f_code, int16 *error);

   int sncRewindAndSeekNewMPEGSync(int earliestBitPos, bibBuffer_t *buffer,

                                   int f_code, int16 *error);

   int sncSeekMPEGSync(bibBuffer_t *buffer, int f_code, int16 *error);

   int sncSeekMPEGStartCode(bibBuffer_t *buffer, int f_code, int skipVPSync, int checkUD, int16 *error);

   int sncSeekBitPattern(bibBuffer_t *buffer, u_int32 BitPattern, 

      int BitPatternLength, int16 *error);

   int sncRewindStuffing(bibBuffer_t *buffer, int16 *error);

#endif

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