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
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
|
#include "singlebaselinefile.h"
#include "../util/serializable.h"
#include <version.h>
#define FILE_FORMAT_VERSION 1
void SingleBaselineFile::Read(std::istream& stream,
ProgressListener& progress) {
if (!stream) throw std::runtime_error("Could not open file");
char magic[9];
stream.read(magic, 8);
magic[8] = 0;
if (std::string(magic) != "RFIBL")
throw std::runtime_error("This is not an AOFlagger single baseline file");
const unsigned fileformat = Serializable::UnserializeUInt32(stream);
if (fileformat != FILE_FORMAT_VERSION)
throw std::runtime_error(
"This AOFlagger single baseline file has an unknown file format");
const std::string versionStr = Serializable::UnserializeString(stream);
Serializable::UnserializeUInt32(stream); // maj
Serializable::UnserializeUInt32(stream); // min
Serializable::UnserializeUInt32(stream); // submin
data = UnserializeTFData(stream, progress);
metaData = UnserializeMetaData(stream);
telescopeName = Serializable::UnserializeString(stream);
}
void SingleBaselineFile::Write(std::ostream& stream) {
stream.write("RFIBL\0\0\0", 8);
Serializable::SerializeToUInt32(
stream, FILE_FORMAT_VERSION); // fileformat version index
Serializable::SerializeToString(stream, AOFLAGGER_VERSION_DATE_STR);
Serializable::SerializeToUInt32(stream, AOFLAGGER_VERSION_MAJOR);
Serializable::SerializeToUInt32(stream, AOFLAGGER_VERSION_MINOR);
Serializable::SerializeToUInt32(stream, AOFLAGGER_VERSION_SUBMINOR);
Serialize(stream, data);
Serialize(stream, metaData);
Serializable::SerializeToString(stream, telescopeName);
}
TimeFrequencyData SingleBaselineFile::UnserializeTFData(
std::istream& stream, ProgressListener& progress) {
TimeFrequencyData data;
const size_t polCount = Serializable::UnserializeUInt32(stream);
const size_t complCode = Serializable::UnserializeUInt32(stream);
enum TimeFrequencyData::ComplexRepresentation repr;
switch (complCode) {
default:
case 0:
repr = TimeFrequencyData::PhasePart;
break;
case 1:
repr = TimeFrequencyData::AmplitudePart;
break;
case 2:
repr = TimeFrequencyData::RealPart;
break;
case 3:
repr = TimeFrequencyData::ImaginaryPart;
break;
case 4:
repr = TimeFrequencyData::ComplexParts;
break;
}
for (size_t i = 0; i != polCount; ++i) {
TimeFrequencyData polData;
const size_t polCode = Serializable::UnserializeUInt32(stream);
const aocommon::PolarizationEnum pol =
aocommon::Polarization::AipsIndexToEnum(polCode);
const uint32_t imageFlagBitset = Serializable::UnserializeUInt32(stream);
const size_t imageCount = imageFlagBitset & 0x03;
const size_t maskCount = (imageFlagBitset & 0x04) ? 1 : 0;
if (imageCount == 2) {
Image2D first = UnserializeImage(stream, progress, i * 2, polCount * 2),
second =
UnserializeImage(stream, progress, i * 2 + 1, polCount * 2);
polData = TimeFrequencyData(pol, Image2D::MakePtr(first),
Image2D::MakePtr(second));
} else if (imageCount == 1) {
polData = TimeFrequencyData(
repr, pol,
Image2D::MakePtr(UnserializeImage(stream, progress, i, polCount)));
}
if (maskCount == 1)
polData.SetGlobalMask(Mask2D::MakePtr(UnserializeMask(stream)));
if (i == 0)
data = polData;
else
data = TimeFrequencyData::MakeFromPolarizationCombination(data, polData);
}
return data;
}
TimeFrequencyMetaData SingleBaselineFile::UnserializeMetaData(
std::istream& stream) {
TimeFrequencyMetaData metaData;
const size_t featureSet = Serializable::UnserializeUInt64(stream);
const bool hasAntenna1 = featureSet & 0x01;
const bool hasAntenna2 = featureSet & 0x02;
const bool hasBand = featureSet & 0x04;
const bool hasObsTimes = featureSet & 0x10;
if (hasAntenna1) {
AntennaInfo ant;
ant.Unserialize(stream);
metaData.SetAntenna1(ant);
}
if (hasAntenna2) {
AntennaInfo ant;
ant.Unserialize(stream);
metaData.SetAntenna2(ant);
}
if (hasBand) {
BandInfo band;
band.Unserialize(stream);
metaData.SetBand(band);
}
if (hasObsTimes) {
std::vector<double> vals(Serializable::UnserializeUInt64(stream));
for (double& t : vals) t = Serializable::UnserializeDouble(stream);
metaData.SetObservationTimes(vals);
}
return metaData;
}
Image2D SingleBaselineFile::UnserializeImage(std::istream& stream,
ProgressListener& progress,
size_t progressOffset,
size_t progressMax) {
size_t width = Serializable::UnserializeUInt64(stream),
height = Serializable::UnserializeUInt64(stream);
Image2D result = Image2D::MakeUnsetImage(width, height);
for (size_t y = 0; y != height; ++y) {
progress.OnProgress(height * progressOffset + y, height * progressMax);
for (size_t x = 0; x != width; ++x) {
result.SetValue(x, y, Serializable::UnserializeFloat(stream));
}
}
return result;
}
Mask2D SingleBaselineFile::UnserializeMask(std::istream& stream) {
size_t width = Serializable::UnserializeUInt64(stream),
height = Serializable::UnserializeUInt64(stream);
Mask2D result = Mask2D::MakeUnsetMask(width, height);
for (size_t y = 0; y != height; ++y) {
for (size_t x = 0; x != width; ++x) {
char val;
stream.read(&val, 1);
result.SetValue(x, y, val != 0);
}
}
return result;
}
void SingleBaselineFile::Serialize(std::ostream& stream,
const TimeFrequencyData& data) {
Serializable::SerializeToUInt32(stream, data.PolarizationCount());
int complCode;
switch (data.ComplexRepresentation()) {
default:
case TimeFrequencyData::PhasePart:
complCode = 0;
break;
case TimeFrequencyData::AmplitudePart:
complCode = 1;
break;
case TimeFrequencyData::RealPart:
complCode = 2;
break;
case TimeFrequencyData::ImaginaryPart:
complCode = 3;
break;
case TimeFrequencyData::ComplexParts:
complCode = 4;
break;
}
Serializable::SerializeToUInt32(stream, complCode);
for (size_t i = 0; i != data.PolarizationCount(); ++i) {
const aocommon::PolarizationEnum p = data.GetPolarization(i);
Serializable::SerializeToUInt32(stream,
aocommon::Polarization::EnumToAipsIndex(p));
unsigned int imageFlagBitset = 0;
const TimeFrequencyData polData = data.MakeFromPolarizationIndex(i);
if (polData.ImageCount() == 2) imageFlagBitset = imageFlagBitset | 0x02;
if (polData.ImageCount() == 1) imageFlagBitset = imageFlagBitset | 0x01;
if (polData.MaskCount() == 1) imageFlagBitset = imageFlagBitset | 0x04;
Serializable::SerializeToUInt32(stream, imageFlagBitset);
if (polData.ImageCount() >= 1) Serialize(stream, *polData.GetImage(0));
if (polData.ImageCount() == 2) Serialize(stream, *polData.GetImage(1));
if (polData.MaskCount() == 1) Serialize(stream, *polData.GetMask(0));
}
}
void SingleBaselineFile::Serialize(std::ostream& stream,
const TimeFrequencyMetaData& metaData) {
size_t featureSet = 0;
if (metaData.HasAntenna1()) featureSet = featureSet | 0x01;
if (metaData.HasAntenna2()) featureSet = featureSet | 0x02;
if (metaData.HasBand()) featureSet = featureSet | 0x04;
// if(metaData.HasField())
// featureSet = featureSet | 0x08;
if (metaData.HasObservationTimes()) featureSet = featureSet | 0x10;
// if(metaData.HasUVW())
// featureSet = featureSet | 0x20;
Serializable::SerializeToUInt64(stream, featureSet);
if (metaData.HasAntenna1()) metaData.Antenna1().Serialize(stream);
if (metaData.HasAntenna2()) metaData.Antenna2().Serialize(stream);
if (metaData.HasBand()) metaData.Band().Serialize(stream);
if (metaData.HasObservationTimes()) {
const std::vector<double>& vals = metaData.ObservationTimes();
Serializable::SerializeToUInt64(stream, vals.size());
for (const double& t : vals) Serializable::SerializeToDouble(stream, t);
}
}
void SingleBaselineFile::Serialize(std::ostream& stream, const Image2D& image) {
Serializable::SerializeToUInt64(stream, image.Width());
Serializable::SerializeToUInt64(stream, image.Height());
for (size_t y = 0; y != image.Height(); ++y) {
for (size_t x = 0; x != image.Width(); ++x) {
Serializable::SerializeToFloat(stream, image.Value(x, y));
}
}
}
void SingleBaselineFile::Serialize(std::ostream& stream, const Mask2D& mask) {
Serializable::SerializeToUInt64(stream, mask.Width());
Serializable::SerializeToUInt64(stream, mask.Height());
for (size_t y = 0; y != mask.Height(); ++y) {
for (size_t x = 0; x != mask.Width(); ++x) {
const char val = mask.Value(x, y) ? 1 : 0;
stream.write(&val, 1);
}
}
}
|
