2008-11-24 07:50:47     with FAAD2 2.6.1 and FAAD2 2.0

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2008-11-24 07:50:47     with FAAD2 2.6.1 and FAAD2 2.0

Jingwei Cheng (CHINA)

Message: 65760   

 

为什么这两个版本在blackfin上的效率会相差很多.

 

我在BF548 EZKIT 上执行FAAD2 2.0,CPU占用率为10%左右,但执行FAAD2 2.6.1却是60%,为什么会这样.

 

我想用FAAD2 2.6.1的原因是因为在FAAD2 2.0中的浮点版(FIXED_POINT)中不支持SBR_DEC.程序如下:

 

#define FAAD2_VERSION "2.0     "

 

/* FIXED POINT: No MAIN decoding, no SBR decoding */

#ifdef FIXED_POINT

    # ifdef MAIN_DEC

        #  undef MAIN_DEC

    # endif

//# ifndef SBR_LOW_POWER

//#  define SBR_LOW_POWER

//# endif

    # ifdef SBR_DEC

        #  undef SBR_DEC

    # endif

#endif // FIXED_POINT

 

希望管理员能给予点建议.

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