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SymmRowSmallVec_32f 1x5

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NEON speedup: 2.36x
Auto-vect speedup: 2.36x

Test kernel: [0.1, 0.2408, 0.3184, 0.2408, 0.1]
This commit is contained in:
orestis 2014-12-19 22:47:06 +02:00
parent ed0ce48179
commit 13c0855114
1 changed files with 93 additions and 1 deletions
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94
modules/imgproc/src/filter.cpp
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@ -2932,10 +2932,102 @@ struct SymmColumnVec_32f16s
};
struct SymmRowSmallVec_32f
{
SymmRowSmallVec_32f() {}
SymmRowSmallVec_32f( const Mat& _kernel, int _symmetryType )
{
kernel = _kernel;
symmetryType = _symmetryType;
}
int operator()(const uchar* _src, uchar* _dst, int width, int cn) const
{
//Uncomment the two following lines when runtime support for neon is implemented.
// if( !checkHardwareSupport(CV_CPU_NEON) )
// return 0;
int i = 0, _ksize = kernel.rows + kernel.cols - 1;
float* dst = (float*)_dst;
const float* src = (const float*)_src + (_ksize/2)*cn;
bool symmetrical = (symmetryType & KERNEL_SYMMETRICAL) != 0;
const float* kx = kernel.ptr<float>() + _ksize/2;
width *= cn;
if( symmetrical )
{
if( _ksize == 1 )
return 0;
if( _ksize == 3 )
{
if( kx[0] == 2 && kx[1] == 1 )
return 0;
else if( kx[0] == -2 && kx[1] == 1 )
return 0;
else
{
return 0;
}
}
else if( _ksize == 5 )
{
if( kx[0] == -2 && kx[1] == 0 && kx[2] == 1 )
return 0;
else
{
float32x2_t k0, k1;
k0 = k1 = vdup_n_f32(0);
k0 = vld1_lane_f32(kx + 0, k0, 0);
k0 = vld1_lane_f32(kx + 1, k0, 1);
k1 = vld1_lane_f32(kx + 2, k1, 0);
for( ; i <= width - 4; i += 4, src += 4 )
{
float32x4_t x0, x1, x2, x3, x4;
x0 = vld1q_f32(src);
x1 = vld1q_f32(src - cn);
x2 = vld1q_f32(src + cn);
x3 = vld1q_f32(src - cn*2);
x4 = vld1q_f32(src + cn*2);
float32x4_t y0;
y0 = vmulq_lane_f32(x0, k0, 0);
y0 = vmlaq_lane_f32(y0, vaddq_f32(x1, x2), k0, 1);
y0 = vmlaq_lane_f32(y0, vaddq_f32(x3, x4), k1, 0);
vst1q_f32(dst + i, y0);
}
}
}
}
else
{
if( _ksize == 3 )
{
if( kx[0] == 0 && kx[1] == 1 )
return 0;
else
{
return 0;
}
}
else if( _ksize == 5 )
{
return 0;
}
}
return i;
}
Mat kernel;
int symmetryType;
};
typedef RowNoVec RowVec_8u32s;
typedef RowNoVec RowVec_16s32f;
typedef RowNoVec RowVec_32f;
typedef SymmRowSmallNoVec SymmRowSmallVec_32f;
typedef ColumnNoVec SymmColumnVec_32f;
typedef SymmColumnSmallNoVec SymmColumnSmallVec_32f;
typedef FilterNoVec FilterVec_8u;