encinternal.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 2003 HANTRO PRODUCTS OY                    --
--                            ALL RIGHTS RESERVED                             --
--                                                                            --
--          The entire notice above must be reproduced on all copies.         --
--                                                                            --
--------------------------------------------------------------------------------
--
--  Abstract : VGA MPEG4 Encoder API
--
-------------------------------------------------------------------------------*/

#ifndef __ENCINTERNAL_H__
#define __ENCINTERNAL_H__

#include "basetype.h"
#include "mp4encapi.h"

/* ASIC endianess mode */

#define ASIC_LITTLE_ENDIAN      0
#define ASIC_BIG_ENDIAN         1

/* The system's endianess mode: ASIC_LITTLE_ENDIAN or ASIC_BIG_ENDIAN
 * The stream and VOP headers are generated by SW and are always in
 * system endianess. This define is used to determine whether the headers 
 * endianess needs to be swapped to stream endianess.
 */
#define MP4ENC_SYSTEM_ENDIAN        ASIC_LITTLE_ENDIAN

/* The stream's endianess mode: ASIC_LITTLE_ENDIAN or ASIC_BIG_ENDIAN
 * This defines the endianess of the stream generated by the ASIC.
 */ 
#define MP4ENC_STREAM_ENDIAN        ASIC_LITTLE_ENDIAN

/* The input image's endianess mode: ASIC_LITTLE_ENDIAN or ASIC_BIG_ENDIAN
 * This defines the endianess of the ASIC input YUV 4:2:0 
 */
#define MP4ENC_INPUT_ENDIAN         ASIC_LITTLE_ENDIAN

/* ASIC interrupt enable, separately for error response and VOP functions.
 * This enables/disables the ASIC to generate interrupts
 * If this is disabled, the SW must poll the registers to find out
 * when the HW is ready. Currently the software doesn't support polling.
 */
#define MP4ENC_ERR_IRQ_ENABLE       1
#define MP4ENC_VOP_IRQ_ENABLE       1

/* Maximum amount of video packets reported by ASIC
 * ASIC stops incrementing the VP counter if this value is reached 
 */
#define MP4ENC_MAX_VP_NUMBER        1023

/* Stream buffer field 2 for MB cbpy-codes in data partitioned stream.
 * The value is allocated buffer size in bits/macroblock.
 */
#define MP4ENC_MB_BUF_2_SIZE        116

/* Stream buffer field 3 for VLC coded DCT in data partitioned stream.
 * The whole VOP is lost if overflow occurs in this buffer.
 * When stream type is VP+DP or VP+DP+RVLC only one VP VLC's are stored 
 * in this buffer. Maximum VP size is defined by profile and level,
 * advanced simple level 5 allows 16384 bits. After limit is reached 
 * maximum of two macroblocks is still encoded, thus adding 23040 bits.
 * The value is allocated buffer size in bytes.
 */
#define MP4ENC_DCT_BUF_3_SIZE_VP    4928

/* Limits for output stream buffer and stream buffer field 3.
 * This value (bytes) is added to the limit in register to get the last
 * possible address that ASIC can write.
 * The stream buffer limit includes the maximum burst length.
 * One burst length (16 addresses) is added for safety.
 */
#define MP4ENC_BUF_LIMIT            ((7 + 16*3 + 1)*4)
#define MP4ENC_BUF_3_LIMIT          ((2*8 + 16)*4)


enum EncStatus
{
    ENCSTAT_INIT,
    ENCSTAT_STRM_START,
    ENCSTAT_START_VOP,
    ENCSTAT_GOV_INSERTED,
    ENCSTAT_NEW_REF_IMG,
    ENCSTAT_MID_VOP
};

    
i32 CheckInitCfg(const MP4EncCfg * pEncCfg);
void GetStrmSizeData(EncContainer_t * pEncCont, MP4EncOut * pEncOut,
        MP4EncIn * pEncIn);
void GetTimeCode(const timeCode_s *timeCode, MP4EncOut * pEncOut);

MP4EncRet SetVopParameters(EncContainer_t * EncCont, 
        MP4EncIn * pEncIn, MP4EncOut * pEncOut);

MP4EncRet GetVopStatus(EncContainer_t * pEncCont, 
        MP4EncIn * pEncIn, MP4EncOut * pEncOut);

/* stream handling */
i32 EncStrmInit(EncContainer_t * pEncCont, MP4EncCfg * pCfg);
void EncStrmRelease(EncContainer_t * pEncCont);
i32 EncStrmStart(EncContainer_t * pEncCont, u32 * pBuf, u32 * size);
i32 EncStrmEnd(EncContainer_t * pEncCont, u32 * pBuf, u32 * size);

#endif /*__ENCINTERNAL_H__*/