# split pd-maths into pd-core and pd-image (0.2.3)

source/image/img_convert.cpp

@@ -0,0 +1,54 @@
+/*
+MIT License
+Copyright (c) 2024 - 2025 René Amthor (tobid7)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+ */
+
+#include <pd/image/img_convert.hpp>
+
+namespace PD::ImgConvert {
+void RGB24toRGBA32(std::vector<u8> &out, const std::vector<u8> &in,
+                   const int &w, const int &h) {
+  // Converts RGB24 to RGBA32
+  for (int y = 0; y < h; y++) {
+    for (int x = 0; x < w; x++) {
+      int src = (y * w + x) * 3;
+      int dst = (y * w + x) * 4;
+      out[dst + 0] = in[src + 0];
+      out[dst + 1] = in[src + 1];
+      out[dst + 2] = in[src + 2];
+      out[dst + 3] = 255;
+    }
+  }
+}
+void Reverse32(std::vector<u8> &buf, const int &w, const int &h) {
+  for (int x = 0; x < w; x++) {
+    for (int y = 0; y < h; y++) {
+      int i = y * w + x;
+      u8 t0 = buf[i + 0];
+      u8 t1 = buf[i + 1];
+      buf[i + 0] = buf[i + 3];
+      buf[i + 1] = buf[i + 2];
+      buf[i + 3] = t0;
+      buf[i + 2] = t1;
+    }
+  }
+}
+}  // namespace PD::ImgConvert