1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
/******************************************************************************
*
* Project: GDAL
* Purpose: "resize" step of "raster pipeline"
* Author: Even Rouault <even dot rouault at spatialys.com>
*
******************************************************************************
* Copyright (c) 2025, Even Rouault <even dot rouault at spatialys.com>
*
* SPDX-License-Identifier: MIT
****************************************************************************/
#include "gdalalg_raster_resize.h"
#include "gdal_priv.h"
#include "gdal_utils.h"
//! @cond Doxygen_Suppress
#ifndef _
#define _(x) (x)
#endif
/************************************************************************/
/* GDALRasterResizeAlgorithm::GDALRasterResizeAlgorithm() */
/************************************************************************/
GDALRasterResizeAlgorithm::GDALRasterResizeAlgorithm(bool standaloneStep)
: GDALRasterPipelineStepAlgorithm(NAME, DESCRIPTION, HELP_URL,
standaloneStep)
{
AddArg("resolution", 0, _("Target resolution (in destination CRS units)"),
&m_resolution)
.SetMinCount(2)
.SetMaxCount(2)
.SetMinValueExcluded(0)
.SetRepeatedArgAllowed(false)
.SetDisplayHintAboutRepetition(false)
.SetMetaVar("<xres>,<yres>")
.SetMutualExclusionGroup("resolution-size");
AddArg("size", 0,
_("Target size in pixels (or percentage if using '%' suffix)"),
&m_size)
.SetMinCount(2)
.SetMaxCount(2)
.SetRequired()
.SetMinValueIncluded(0)
.SetRepeatedArgAllowed(false)
.SetDisplayHintAboutRepetition(false)
.SetMetaVar("<width[%]>,<height[%]>")
.SetMutualExclusionGroup("resolution-size")
.AddValidationAction(
[this]()
{
for (const auto &s : m_size)
{
char *endptr = nullptr;
const double val = CPLStrtod(s.c_str(), &endptr);
bool ok = false;
if (endptr == s.c_str() + s.size())
{
if (val >= 0 && val <= INT_MAX &&
static_cast<int>(val) == val)
{
ok = true;
}
}
else if (endptr && ((endptr[0] == ' ' && endptr[1] == '%' &&
endptr + 2 == s.c_str() + s.size()) ||
(endptr[0] == '%' &&
endptr + 1 == s.c_str() + s.size())))
{
if (val >= 0)
{
ok = true;
}
}
if (!ok)
{
ReportError(CE_Failure, CPLE_IllegalArg,
"Invalid size value: %s'", s.c_str());
return false;
}
}
return true;
});
AddArg("resampling", 'r', _("Resampling method"), &m_resampling)
.SetChoices("nearest", "bilinear", "cubic", "cubicspline", "lanczos",
"average", "mode")
.SetDefault("nearest")
.SetHiddenChoices("near");
}
/************************************************************************/
/* GDALRasterResizeAlgorithm::RunStep() */
/************************************************************************/
bool GDALRasterResizeAlgorithm::RunStep(GDALPipelineStepRunContext &)
{
const auto poSrcDS = m_inputDataset[0].GetDatasetRef();
CPLAssert(poSrcDS);
CPLAssert(m_outputDataset.GetName().empty());
CPLAssert(!m_outputDataset.GetDatasetRef());
CPLStringList aosOptions;
aosOptions.AddString("-of");
aosOptions.AddString("VRT");
if (!m_size.empty())
{
aosOptions.AddString("-outsize");
aosOptions.AddString(m_size[0]);
aosOptions.AddString(m_size[1]);
}
if (!m_resolution.empty())
{
aosOptions.AddString("-tr");
aosOptions.AddString(CPLSPrintf("%.17g", m_resolution[0]));
aosOptions.AddString(CPLSPrintf("%.17g", m_resolution[1]));
}
if (!m_resampling.empty())
{
aosOptions.AddString("-r");
aosOptions.AddString(m_resampling.c_str());
}
GDALTranslateOptions *psOptions =
GDALTranslateOptionsNew(aosOptions.List(), nullptr);
auto poOutDS = std::unique_ptr<GDALDataset>(GDALDataset::FromHandle(
GDALTranslate("", GDALDataset::ToHandle(poSrcDS), psOptions, nullptr)));
GDALTranslateOptionsFree(psOptions);
const bool bRet = poOutDS != nullptr;
if (poOutDS)
{
m_outputDataset.Set(std::move(poOutDS));
}
return bRet;
}
GDALRasterResizeAlgorithmStandalone::~GDALRasterResizeAlgorithmStandalone() =
default;
//! @endcond
|
