reading raw moench files (PR#3) (#32)

* reading moench and raw files

* read mythen3 files

* read multiport mythen3

* delete .vscode and .env.dev

---------

Co-authored-by: Bechir <bechir.brahem420@gmail.com>

file_io/src/RawFile.cpp

@@ -0,0 +1,48 @@
+#include "aare/RawFile.hpp"
+#include "aare/utils/logger.hpp"
+
+Frame RawFile::get_frame(size_t frame_number) {
+    if (frame_number > this->total_frames) {
+        throw std::runtime_error("Frame number out of range");
+    }
+    int subfile_id = frame_number / this->max_frames_per_file;
+    // create frame and get its buffer
+    auto f = Frame(this->rows, this->cols, this->bitdepth);
+    std::byte *frame_buffer = f._get_data();
+
+    if (this->geometry.col == 1) {
+        // get the part from each subfile and copy it to the frame
+        for (size_t part_idx = 0; part_idx != this->n_subfile_parts; ++part_idx) {
+            auto part_offset = this->subfiles[subfile_id][part_idx]->bytes_per_part();
+            this->subfiles[subfile_id][part_idx]->get_part(frame_buffer + part_idx*part_offset, frame_number % this->max_frames_per_file);
+        }
+
+    } else {
+        // create a buffer that will hold a the frame part
+        auto bytes_per_part = this->subfile_rows * this->subfile_cols * this->bitdepth / 8;
+        std::byte *part_buffer = new std::byte[bytes_per_part];
+
+        for (size_t part_idx = 0; part_idx != this->n_subfile_parts; ++part_idx) {
+            this->subfiles[subfile_id][part_idx]->get_part(part_buffer, frame_number % this->max_frames_per_file);
+            for (int cur_row = 0; cur_row < (this->subfile_rows); cur_row++) {
+                auto irow = cur_row + (part_idx / this->geometry.col) * this->subfile_rows;
+                auto icol = (part_idx % this->geometry.col) * this->subfile_cols;
+                auto dest = (irow * this->cols + icol);
+                dest = dest * this->bitdepth / 8;
+                memcpy(frame_buffer + dest, part_buffer + cur_row * this->subfile_cols * this->bitdepth / 8,
+                       this->subfile_cols * this->bitdepth / 8);
+            }
+        }
+        delete[] part_buffer;
+    }
+
+    return f;
+}
+
+RawFile::~RawFile() {
+    for (auto &vec : subfiles) {
+        for (auto subfile : vec) {
+            delete subfile;
+        }
+    }
+}