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modified read_n also for File and RawFile

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This commit is contained in:
froejdh_e
2024-11-27 09:31:57 +01:00
parent 996a8861f6
commit 8bf9ac55ce
11 changed files with 217 additions and 78 deletions
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60
python/src/raw_file.hpp
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@@ -48,32 +48,44 @@ void define_raw_file_io_bindings(py::module &m) {
return py::make_tuple(header, image);
})
.def("read_n",
[](RawFile &self, size_t n_frames) {
py::array image;
std::vector<ssize_t> shape;
shape.reserve(3);
shape.push_back(n_frames);
shape.push_back(self.rows());
shape.push_back(self.cols());
.def(
"read_n",
[](RawFile &self, size_t n_frames) {
// adjust for actual frames left in the file
n_frames =
std::min(n_frames, self.total_frames() - self.tell());
if (n_frames == 0) {
throw std::runtime_error("No frames left in file");
}
std::vector<size_t> shape{n_frames, self.rows(), self.cols()};
// return headers from all subfiles
py::array_t<DetectorHeader> header;
if (self.n_mod() == 1) {
header = py::array_t<DetectorHeader>(n_frames);
} else {
header = py::array_t<DetectorHeader>({self.n_mod(), n_frames});
}
// py::array_t<DetectorHeader> header({self.n_mod(), n_frames});
// return headers from all subfiles
py::array_t<DetectorHeader> header({self.n_mod(), n_frames});
py::array image;
const uint8_t item_size = self.bytes_per_pixel();
if (item_size == 1) {
image = py::array_t<uint8_t>(shape);
} else if (item_size == 2) {
image = py::array_t<uint16_t>(shape);
} else if (item_size == 4) {
image = py::array_t<uint32_t>(shape);
}
self.read_into(
reinterpret_cast<std::byte *>(image.mutable_data()),
n_frames, header.mutable_data());
const uint8_t item_size = self.bytes_per_pixel();
if (item_size == 1) {
image = py::array_t<uint8_t>(shape);
} else if (item_size == 2) {
image = py::array_t<uint16_t>(shape);
} else if (item_size == 4) {
image = py::array_t<uint32_t>(shape);
}
self.read_into(
reinterpret_cast<std::byte *>(image.mutable_data()),
n_frames, header.mutable_data());
return py::make_tuple(header, image);
})
return py::make_tuple(header, image);
},
R"(
Read n frames from the file.
)")
.def("frame_number", &RawFile::frame_number)
.def_property_readonly("bytes_per_frame", &RawFile::bytes_per_frame)
.def_property_readonly("pixels_per_frame", &RawFile::pixels_per_frame)