From 3acdd717b16b33c3ce8f159a8ebb43c1199ae0f1 Mon Sep 17 00:00:00 2001
From: marcsello <punkosdmarcell@rocketmail.com>
Date: Tue, 3 Nov 2020 19:52:20 +0100
Subject: [PATCH] Implemented image flipper

---
 src/pixeldata_utils.c | 22 ++++++++++++++++++++++
 src/pixeldata_utils.h | 15 +++++++++++++++
 2 files changed, 37 insertions(+)
 create mode 100644 src/pixeldata_utils.c
 create mode 100644 src/pixeldata_utils.h

diff --git a/src/pixeldata_utils.c b/src/pixeldata_utils.c
new file mode 100644
index 0000000..4860739
--- /dev/null
+++ b/src/pixeldata_utils.c
@@ -0,0 +1,22 @@
+//
+// Created by marcsello on 03/11/2020.
+//
+
+#include "pixeldata_utils.h"
+
+uint8_t flip_image(const uint8_t *source, uint8_t *destination, uint64_t data_length, uint64_t width, uint64_t height) {
+
+    if ((width*height*3) != data_length) {
+        return IMAGE_FLIP_FAIL;
+    }
+
+    for (uint64_t i = 0; i < height; i++) {
+        for (uint64_t j = 0; j < width; j++) {
+            destination[(i * width + j) * 3] = source[((height - i - 1) * width + j) * 3];
+            destination[(i * width + j) * 3 + 1] = source[((height - i - 1) * width + j) * 3 + 1];
+            destination[(i * width + j) * 3 + 2] = source[((height - i - 1) * width + j) * 3 + 2];
+        }
+    }
+
+    return IMAGE_FLIP_SUCCESS;
+}
\ No newline at end of file
diff --git a/src/pixeldata_utils.h b/src/pixeldata_utils.h
new file mode 100644
index 0000000..04ca1de
--- /dev/null
+++ b/src/pixeldata_utils.h
@@ -0,0 +1,15 @@
+//
+// Created by marcsello on 03/11/2020.
+//
+
+#ifndef CAFF_PREVIEWER_PIXELDATA_UTILS_H
+#define CAFF_PREVIEWER_PIXELDATA_UTILS_H
+
+#include <stdint.h>
+
+#define IMAGE_FLIP_SUCCESS 0
+#define IMAGE_FLIP_FAIL 0
+
+uint8_t flip_image(const uint8_t* source, uint8_t* destination, uint64_t data_length, uint64_t width, uint64_t height);
+
+#endif //CAFF_PREVIEWER_PIXELDATA_UTILS_H