feat: Started on webp implementationwebp

Currently very basic, can only read simple things such as width and height

1 files changed, 38 insertions, 0 deletions

diff --git a/src/WEBPImage.h b/src/WEBPImage.h
new file mode 100644
index 0000000..8a87b08
--- /dev/null
+++ b/src/WEBPImage.h
@@ -0,0 +1,38 @@
+#pragma once
+
+#include "image.h"
+#include "reader.h"
+
+#define BIT_BUFFER_SIZE 1024
+
+namespace TehImage
+{
+	typedef enum {
+		PREDICTOR_TRANSFORM             = 0,
+		COLOR_TRANSFORM                 = 1,
+		SUBTRACT_GREEN_TRANSFORM        = 2,
+		COLOR_INDEXING_TRANSFORM        = 3,
+	} TransformType;
+	
+	class WEBPImage : public Image
+	{
+	public:
+		WEBPImage() = default;
+		~WEBPImage() = default;
+		
+		WEBPImage(const Image& other) : Image(other) {}
+		
+		int readFromFile(std::string filename) override;
+		int writeToFile(std::string filename) override;
+
+	private:
+		std::unique_ptr<Reader> reader;
+		uint8_t bitBuffer;
+		size_t bitBufferPos = 0;
+
+		bool readBit();
+		uint32_t readBits(size_t count);
+		void readFourCC(char* dest);
+		void refreshBitBuffer();
+	};
+}