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histogram.cpp
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89 lines (82 loc) · 3.31 KB
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/*******************************************************
* Copyright (c) 2014, ArrayFire
* All rights reserved.
*
* This file is distributed under 3-clause BSD license.
* The complete license agreement can be obtained at:
* http://arrayfire.com/licenses/BSD-3-Clause
********************************************************/
#include <backend.hpp>
#include <common/err_common.hpp>
#include <handle.hpp>
#include <histogram.hpp>
#include <af/dim4.hpp>
#include <af/image.h>
using af::dim4;
using namespace detail;
template<typename inType, typename outType>
static inline af_array histogram(const af_array in, const unsigned &nbins,
const double &minval, const double &maxval,
const bool islinear) {
if (islinear)
return getHandle(histogram<inType, outType, true>(
getArray<inType>(in), nbins, minval, maxval));
else
return getHandle(histogram<inType, outType, false>(
getArray<inType>(in), nbins, minval, maxval));
}
af_err af_histogram(af_array *out, const af_array in, const unsigned nbins,
const double minval, const double maxval) {
try {
const ArrayInfo &info = getInfo(in);
af_dtype type = info.getType();
if (info.ndims() == 0) { return af_retain_array(out, in); }
af_array output;
switch (type) {
case f32:
output = histogram<float, uint>(in, nbins, minval, maxval,
info.isLinear());
break;
case f64:
output = histogram<double, uint>(in, nbins, minval, maxval,
info.isLinear());
break;
case b8:
output = histogram<char, uint>(in, nbins, minval, maxval,
info.isLinear());
break;
case s32:
output = histogram<int, uint>(in, nbins, minval, maxval,
info.isLinear());
break;
case u32:
output = histogram<uint, uint>(in, nbins, minval, maxval,
info.isLinear());
break;
case s16:
output = histogram<short, uint>(in, nbins, minval, maxval,
info.isLinear());
break;
case u16:
output = histogram<ushort, uint>(in, nbins, minval, maxval,
info.isLinear());
break;
case s64:
output = histogram<intl, uint>(in, nbins, minval, maxval,
info.isLinear());
break;
case u64:
output = histogram<uintl, uint>(in, nbins, minval, maxval,
info.isLinear());
break;
case u8:
output = histogram<uchar, uint>(in, nbins, minval, maxval,
info.isLinear());
break;
default: TYPE_ERROR(1, type);
}
std::swap(*out, output);
}
CATCHALL;
return AF_SUCCESS;
}