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/*
* new DCT12
*/
static void dct12(real *in,real *rawout1,real *rawout2,register real *wi,register real *ts)
{
#define DCT12_PART1 \
in5 = in[5*3]; \
in5 += (in4 = in[4*3]); \
in4 += (in3 = in[3*3]); \
in3 += (in2 = in[2*3]); \
in2 += (in1 = in[1*3]); \
in1 += (in0 = in[0*3]); \
\
in5 += in3; in3 += in1; \
\
in2 *= COS6_1; \
in3 *= COS6_1; \
#define DCT12_PART2 \
in0 += in4 * COS6_2; \
\
in4 = in0 + in2; \
in0 -= in2; \
\
in1 += in5 * COS6_2; \
\
in5 = (in1 + in3) * tfcos12[0]; \
in1 = (in1 - in3) * tfcos12[2]; \
\
in3 = in4 + in5; \
in4 -= in5; \
\
in2 = in0 + in1; \
in0 -= in1;
{
real in0,in1,in2,in3,in4,in5;
register real *out1 = rawout1;
ts[SBLIMIT*0] = out1[0]; ts[SBLIMIT*1] = out1[1]; ts[SBLIMIT*2] = out1[2];
ts[SBLIMIT*3] = out1[3]; ts[SBLIMIT*4] = out1[4]; ts[SBLIMIT*5] = out1[5];
DCT12_PART1
{
real tmp0,tmp1 = (in0 - in4);
{
real tmp2 = (in1 - in5) * tfcos12[1];
tmp0 = tmp1 + tmp2;
tmp1 -= tmp2;
}
ts[(17-1)*SBLIMIT] = out1[17-1] + tmp0 * wi[11-1];
ts[(12+1)*SBLIMIT] = out1[12+1] + tmp0 * wi[6+1];
ts[(6 +1)*SBLIMIT] = out1[6 +1] + tmp1 * wi[1];
ts[(11-1)*SBLIMIT] = out1[11-1] + tmp1 * wi[5-1];
}
DCT12_PART2
ts[(17-0)*SBLIMIT] = out1[17-0] + in2 * wi[11-0];
ts[(12+0)*SBLIMIT] = out1[12+0] + in2 * wi[6+0];
ts[(12+2)*SBLIMIT] = out1[12+2] + in3 * wi[6+2];
ts[(17-2)*SBLIMIT] = out1[17-2] + in3 * wi[11-2];
ts[(6+0)*SBLIMIT] = out1[6+0] + in0 * wi[0];
ts[(11-0)*SBLIMIT] = out1[11-0] + in0 * wi[5-0];
ts[(6+2)*SBLIMIT] = out1[6+2] + in4 * wi[2];
ts[(11-2)*SBLIMIT] = out1[11-2] + in4 * wi[5-2];
}
in++;
{
real in0,in1,in2,in3,in4,in5;
register real *out2 = rawout2;
DCT12_PART1
{
real tmp0,tmp1 = (in0 - in4);
{
real tmp2 = (in1 - in5) * tfcos12[1];
tmp0 = tmp1 + tmp2;
tmp1 -= tmp2;
}
out2[5-1] = tmp0 * wi[11-1];
out2[0+1] = tmp0 * wi[6+1];
ts[(12+1)*SBLIMIT] += tmp1 * wi[1];
ts[(17-1)*SBLIMIT] += tmp1 * wi[5-1];
}
DCT12_PART2
out2[5-0] = in2 * wi[11-0];
out2[0+0] = in2 * wi[6+0];
out2[0+2] = in3 * wi[6+2];
out2[5-2] = in3 * wi[11-2];
ts[(12+0)*SBLIMIT] += in0 * wi[0];
ts[(17-0)*SBLIMIT] += in0 * wi[5-0];
ts[(12+2)*SBLIMIT] += in4 * wi[2];
ts[(17-2)*SBLIMIT] += in4 * wi[5-2];
}
in++;
{
real in0,in1,in2,in3,in4,in5;
register real *out2 = rawout2;
out2[12]=out2[13]=out2[14]=out2[15]=out2[16]=out2[17]=0.0;
DCT12_PART1
{
real tmp0,tmp1 = (in0 - in4);
{
real tmp2 = (in1 - in5) * tfcos12[1];
tmp0 = tmp1 + tmp2;
tmp1 -= tmp2;
}
out2[11-1] = tmp0 * wi[11-1];
out2[6 +1] = tmp0 * wi[6+1];
out2[0+1] += tmp1 * wi[1];
out2[5-1] += tmp1 * wi[5-1];
}
DCT12_PART2
out2[11-0] = in2 * wi[11-0];
out2[6 +0] = in2 * wi[6+0];
out2[6 +2] = in3 * wi[6+2];
out2[11-2] = in3 * wi[11-2];
out2[0+0] += in0 * wi[0];
out2[5-0] += in0 * wi[5-0];
out2[0+2] += in4 * wi[2];
out2[5-2] += in4 * wi[5-2];
}
}
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