feat: Add document scanner package

packages/paperless_document_scanner/ios/Classes/conversion_utils.cpp

@@ -0,0 +1,15 @@
+#include "conversion_utils.hpp"
+using namespace cv;
+uint8_t * ConversionUtils::matrix_to_bytearray(Mat mat)
+{
+    int size = mat.total() * mat.elemSize();
+    uint8_t *bytes = (uint8_t *)malloc(size);
+    std::memcpy(bytes, mat.data, size * sizeof(uint8_t));
+    return bytes;
+}
+
+Mat ConversionUtils::bytearray_to_matrix(uint8_t *bytes, int byteCount)
+{
+    std::vector<uint8_t> buf(bytes, bytes + byteCount);
+    return imdecode(buf, IMREAD_COLOR);
+}