Disk: Implement Extended Extractor Driver

This is the high speed driver used for RED 2, FIRE 3, and many
of the RAD-family devices.

include/icsneo/disk/extextractordiskreaddriver.h

@@ -0,0 +1,48 @@
+#ifndef __EXTEXTRACTORDISKREADDRIVER_H__
+#define __EXTEXTRACTORDISKREADDRIVER_H__
+
+#ifdef __cplusplus
+
+#include "icsneo/disk/diskreaddriver.h"
+#include <limits>
+#include <chrono>
+
+namespace icsneo {
+
+namespace Disk {
+
+/**
+ * A disk read driver which uses the extended extractor command set to read from the disk
+ */
+class ExtExtractorDiskReadDriver : public ReadDriver {
+public:
+	Access getAccess() const override { return Access::EntireCard; }
+	std::pair<uint32_t, uint32_t> getBlockSizeBounds() const override {
+		static_assert(SectorSize <= std::numeric_limits<uint32_t>::max(), "Incorrect sector size");
+		static_assert(SectorSize >= std::numeric_limits<uint32_t>::min(), "Incorrect sector size");
+		return { static_cast<uint32_t>(SectorSize), static_cast<uint32_t>(MaxSize) };
+	}
+
+	uint8_t getHeaderLength() const { return headerLength; }
+	void setHeaderLength(uint8_t length) { headerLength = length; }
+
+private:
+	static constexpr const uint32_t MaxSize = Disk::SectorSize * 512;
+	static constexpr const std::chrono::seconds CacheTime = std::chrono::seconds(1);
+
+	std::array<uint8_t, MaxSize> cache;
+	uint64_t cachePos = 0;
+	std::chrono::time_point<std::chrono::steady_clock> cachedAt;
+
+	uint8_t headerLength = 7; // Correct for Ethernet
+
+	optional<uint64_t> readLogicalDiskAligned(Communication& com, device_eventhandler_t report,
+		uint64_t pos, uint8_t* into, uint64_t amount, std::chrono::milliseconds timeout) override;
+};
+
+} // namespace Disk
+
+} // namespace icsneo
+
+#endif // __cplusplus
+#endif // __EXTEXTRACTORDISKREADDRIVER_H__