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imgproc(resize): drop optimization for channels>4

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pull/16504/head
Alexander Alekhin 5 years ago
parent 17fe63446f
commit f67c8e37d6
1 changed files with 1 additions and 85 deletions
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  1. 86
      modules/imgproc/src/resize.cpp

86
modules/imgproc/src/resize.cpp
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@ -1674,93 +1674,9 @@ struct HResizeLinearVecU8_X4
}
}
}
else if(cn < 9)
{
const int step = 8;
const int len0 = xmax & -step;
for( ; k <= (count - 2); k+=2 )
{
const uchar *S0 = src[k];
int *D0 = dst[k];
const uchar *S1 = src[k+1];
int *D1 = dst[k+1];
for( dx = 0; dx < len0; dx += cn )
{
v_int16x8 a0 = v_load(alpha+dx*2);
v_int16x8 a1 = v_load(alpha+dx*2 + 8);
v_uint16x8 s0, s1;
v_zip(v_load_expand(S0+xofs[dx]), v_load_expand(S0+xofs[dx]+cn), s0, s1);
v_store(&D0[dx], v_dotprod(v_reinterpret_as_s16(s0), a0));
v_store(&D0[dx+4], v_dotprod(v_reinterpret_as_s16(s1), a1));
v_zip(v_load_expand(S1+xofs[dx]), v_load_expand(S1+xofs[dx]+cn), s0, s1);
v_store(&D1[dx], v_dotprod(v_reinterpret_as_s16(s0), a0));
v_store(&D1[dx+4], v_dotprod(v_reinterpret_as_s16(s1), a1));
}
}
for( ; k < count; k++ )
{
const uchar *S = src[k];
int *D = dst[k];
for( dx = 0; dx < len0; dx += cn )
{
v_int16x8 a0 = v_load(alpha+dx*2);
v_int16x8 a1 = v_load(alpha+dx*2 + 8);
v_uint16x8 s0, s1;
v_zip(v_load_expand(S+xofs[dx]), v_load_expand(S+xofs[dx]+cn), s0, s1);
v_store(&D[dx], v_dotprod(v_reinterpret_as_s16(s0), a0));
v_store(&D[dx+4], v_dotprod(v_reinterpret_as_s16(s1), a1));
}
}
}
else
{
const int step = 16;
const int len0 = (xmax - cn) & -step;
for( ; k <= (count - 2); k+=2 )
{
const uchar *S0 = src[k];
int *D0 = dst[k];
const uchar *S1 = src[k+1];
int *D1 = dst[k+1];
for( dx = 0; dx < len0; dx += step )
{
v_int16x8 a0 = v_load(alpha+dx*2);
v_int16x8 a1 = v_load(alpha+dx*2 + 8);
v_int16x8 a2 = v_load(alpha+dx*2 + 16);
v_int16x8 a3 = v_load(alpha+dx*2 + 24);
v_uint8x16 s01, s23;
v_zip(v_lut(S0, xofs+dx), v_lut(S0+cn, xofs+dx), s01, s23);
v_store(&D0[dx], v_dotprod(v_reinterpret_as_s16(v_expand_low(s01)), a0));
v_store(&D0[dx+4], v_dotprod(v_reinterpret_as_s16(v_expand_high(s01)), a1));
v_store(&D0[dx+8], v_dotprod(v_reinterpret_as_s16(v_expand_low(s23)), a2));
v_store(&D0[dx+12], v_dotprod(v_reinterpret_as_s16(v_expand_high(s23)), a3));
v_zip(v_lut(S1, xofs+dx), v_lut(S1+cn, xofs+dx), s01, s23);
v_store(&D1[dx], v_dotprod(v_reinterpret_as_s16(v_expand_low(s01)), a0));
v_store(&D1[dx+4], v_dotprod(v_reinterpret_as_s16(v_expand_high(s01)), a1));
v_store(&D1[dx+8], v_dotprod(v_reinterpret_as_s16(v_expand_low(s23)), a2));
v_store(&D1[dx+12], v_dotprod(v_reinterpret_as_s16(v_expand_high(s23)), a3));
}
}
for( ; k < count; k++ )
{
const uchar *S = src[k];
int *D = dst[k];
for( dx = 0; dx < len0; dx += step )
{
v_int16x8 a0 = v_load(alpha+dx*2);
v_int16x8 a1 = v_load(alpha+dx*2 + 8);
v_int16x8 a2 = v_load(alpha+dx*2 + 16);
v_int16x8 a3 = v_load(alpha+dx*2 + 24);
v_uint8x16 s01, s23;
v_zip(v_lut(S, xofs+dx), v_lut(S+cn, xofs+dx), s01, s23);
v_store(&D[dx], v_dotprod(v_reinterpret_as_s16(v_expand_low(s01)), a0));
v_store(&D[dx+4], v_dotprod(v_reinterpret_as_s16(v_expand_high(s01)), a1));
v_store(&D[dx+8], v_dotprod(v_reinterpret_as_s16(v_expand_low(s23)), a2));
v_store(&D[dx+12], v_dotprod(v_reinterpret_as_s16(v_expand_high(s23)), a3));
}
}
return 0; // images with channels >4 are out of optimization scope
}
return dx;
}

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