Initial commit

Bringing a lot of stuff over from my maze-reader project in an attempt
to split the image reading code off into a library.

1 files changed, 51 insertions, 0 deletions

diff --git a/src/image.h b/src/image.h
new file mode 100644
index 0000000..f4071ea
--- /dev/null
+++ b/src/image.h
@@ -0,0 +1,51 @@
+#pragma once
+
+#include <cstddef>
+#include <cstdint>
+
+template <typename T>
+struct Pixel
+{
+	T r, g, b, a;
+};
+
+
+class Image
+{
+protected:
+	uint8_t* imageData;
+	uint8_t colorValues;
+	uint8_t bpp;
+public:
+	Image() = default;
+	~Image();
+	
+	uint32_t width = 0;
+	uint32_t height = 0;
+	uint8_t bitDepth;
+	uint8_t colorType;
+	uint8_t compressionMethod;
+	uint8_t filterMethod;
+	uint8_t interlaceMethod;
+
+	template <typename T>
+	Pixel<T> getPixel(unsigned int x, unsigned int y);
+};
+
+
+template <typename T>
+Pixel<T> Image::getPixel(unsigned int x, unsigned int y)
+{
+	Pixel<T> pixel;
+
+	pixel.r = (T)imageData[y * width * colorValues * bitDepth/8 + x * colorValues * bitDepth/8];
+	pixel.g = (T)imageData[y * width * colorValues * bitDepth/8 + x * colorValues * bitDepth/8 + 1];
+	pixel.b = (T)imageData[y * width * colorValues * bitDepth/8 + x * colorValues * bitDepth/8 + 2];
+
+	if(colorValues == 4)
+		pixel.a = imageData[y * width * colorValues * bitDepth/8 + x * colorValues * bitDepth/8 + 3];
+	else
+		pixel.a = 0;
+
+	return pixel;
+}