C0 100 libavcodec/x86/simple_idct_mmx.c const int C0 = 23170; //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5 C0 149 libavcodec/x86/simple_idct_mmx.c const int C0 = 23170; //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5