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DM365 Default parameter values for JPEGENC

Jan Pohanka
Expert 1310 points

Hello,

in  ijpegenc.h there is following declaration of extern variable with default parameters for encoder.

/*
* ======== IJPEGENC_PARAMS ========
* Default parameter values for JPEGENC instance objects
*/
extern IJPEGENC_Params IJPEGENC_PARAMS;

Unfortunately I can't found where this symbol is defined. When the application is linked with jpeg encoder library (libimx.a, libjpenc.a) I'm getting undefined reference to `IJPEGENC_PARAMS' errors...

codec build id is: 01.00.00.12 (the one from dvsdk 4.02)

regards
Jan

 

 

  • 0
    Expert 1310 points

    According to codec guide are almost all fields of  IJPEGENC_Params and  IJPEGENC_DynamicParams equal to NULL, but supplied header really should not contain the extern definition of default parameters when they are not defined in the library.

  • 0 in reply to Jan Pohanka
    Intellectual 385 points

    I could find these variables are defined in the library.

    Please check the way it is being used.

    Regards, RSV

  • 0 in reply to RSV Prasad
    Expert 1310 points

    RSV Prasad said:

    I could find these variables are defined in the library.

     

    I can't see them there... 

    $ arm-none-linux-gnueabi-nm dvsdk/codecs-dm365/packages/ti/sdo/codecs/jpegenc/lib/libjpgenc.a | grep -i param
    000002dc T JPEGENC_TI_EDMA_GetPaRamDstAddr
    00000034 T JPEGENC_TI_EDMA_MakeOptionParam
    000001ac T JPEGENC_TI_EDMA_SetPaRamDstAddr
    000001ec T JPEGENC_TI_EDMA_SetPaRamEntry
    000001cc T JPEGENC_TI_EDMA_SetPaRamSrcAddr
    U Init_updnsmpl_point_op_Params
    U imxenc_set_parameters_sign
    U imxenc_set_parameters_sign
    00000bd0 T JPEGENC_TI_SEQ_GetParam_Enc
    U JPEGENC_TI_EDMA_MakeOptionParam
    U JPEGENC_TI_EDMA_SetPaRamEntry
    00000670 T JPEGENC_TI_updateParams
    00000004 C edma_param_base_addr
    U JPEGENC_TI_SEQ_GetParam_Enc
    00001d30 T JPEGENC_TI_SetCodecParamSequence
    00000000 r IJPEGENC_TI_DYNAMICPARAMS
    U JPEGENC_TI_updateParams

    Maybe there is wrong version in dvsdk 4.02?

     

  • 0 in reply to Jan Pohanka
    Intellectual 385 points

    Could be...

    Can you please change " extern IJPEGENC_Params IJPEGENC_PARAMS" to " extern IJPEGENC_Params IJPEGENC_TI_PARAMS" in ijpegenc.h and see if it works?

    Regards, RSV

  • 0 in reply to RSV Prasad
    Expert 1310 points

    RSV Prasad said:

    Can you please change " extern IJPEGENC_Params IJPEGENC_PARAMS" to " extern IJPEGENC_Params IJPEGENC_TI_PARAMS" in ijpegenc.h and see if it works?

    It does not work. Which version of jpeg encoder do you use?