swdec_strmstorage.h

freescale i.mx31 BSP CE5.0全部源码

/*------------------------------------------------------------------------------
--                                                                            --
--       This software is confidential and proprietary and may be used        --
--        only as expressly authorized by a licensing agreement from          --
--                                                                            --
--                            Hantro Products Oy.                             --
--                                                                            --
--      In the event of publication, the following notice is applicable:      --
--                                                                            --
--                   (C) COPYRIGHT 2004 HANTRO PRODUCTS OY                    --
--                            ALL RIGHTS RESERVED                             --
--                                                                            --
--         The entire notice above must be reproduced on all copies.          --
--                                                                            --
--------------------------------------------------------------------------------
--
-- MODULE NAME: SwDec_StrmStorage
--
-- DESCRIPTION: definition of decStrmStorage_t structure to store static
-- information needed by top level stream decoding functions
--
-------------------------------------------------------------------------------*/


/*------------------------------------------------------------------------------

    Table of contents
   
    1. Include headers
    2. Module defines
    3. Data types
    4. Function prototypes

------------------------------------------------------------------------------*/

#ifndef SWDEC_STRMSTORAGE_H
#define SWDEC_STRMSTORAGE_H

/*------------------------------------------------------------------------------
    1. Include headers
------------------------------------------------------------------------------*/

#include "basetype.h"

/*------------------------------------------------------------------------------
    2. Module defines
------------------------------------------------------------------------------*/

/*------------------------------------------------------------------------------
    3. Data types
------------------------------------------------------------------------------*/

typedef struct {

    u32 status;
    u32 strmDecReady;
    u32 extPicBufAlloc;

    u32 resyncMarkerLength;
    u32 vpMbNumber;
    u32 vpNumMbs;
    u32 vpFirstCodedMb;
    u32 QP;
    u32 prevQP;
    u32 vpQP;

    u32 shortVideo;
    u32 gobResyncFlag;
    u32 numMbsInGob;
    u32 numGobsInVop;

    u32 *row;   /* array of row indices for each macro block */
    u32 *col;   /* array of column indices for each macro block */

    /* flag to indicate whether default predictor used in dc prediction */
    u32 isDefaultPredictor;
    i32 predictor;      /* dc prediction value */
    u32 predictorQP;    /* qp of macro block used in dc prediction */

    u32 numIdctRows;

    u8 *pLastSync;

    u32 startCodeLoss;
    u32 validVopHeader;

    /* vertical ac coefficients for luminance (7 elements for each vertical 
     * block in a macro block) */
    i32 verLumAcCoeff[14];
    /* vertical ac coefficients for chrominance (7 elements for both chroma
     * components) */
    i32 verChrAcCoeff[14];

    /* horizontal ac coefficients for luminance (7 elements for each block
     * in a row, 2 per macro block), to be allocated dynamically as soon as
     * vop width known */
    i32 *horLumAcCoeff;
    /* horizontal ac coefficients for chrominance (7 elements for both
     * chroma components for each macro block in a row), to be allocated
     * dynamically as soon as vop width known */
    i32 *horChrAcCoeff;

} decStrmStorage_t;

/*------------------------------------------------------------------------------
    4. Function prototypes
------------------------------------------------------------------------------*/

#endif