Diff: USBMSD_Drop/RomDisk.h

Revision:

1:ea8e179320d7

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/USBMSD_Drop/RomDisk.h	Sat Sep 28 03:21:14 2013 +0000
@@ -0,0 +1,65 @@
+// RomDisk.h 2013/9/26
+#pragma once
+
+#define ATTR_READ_ONLY 0x01
+#define ATTR_HIDDEN    0x02
+#define ATTR_SYSTEM    0x04
+#define ATTR_VOLUME_ID 0x08
+#define ATTR_DIRECTORY 0x10
+#define ATTR_ARCHIVE   0x20
+#define ATTR_LONG_NAME (ATTR_READ_ONLY|ATTR_HIDDEN|ATTR_SYSTEM|ATTR_VOLUME_ID)
+
+struct DirEntry {
+    uint8_t name[8+3];
+    uint8_t attr;
+    uint8_t NTres;
+    uint8_t cDateTime_ms;
+    uint16_t cTime;
+    uint16_t cDate;
+    uint16_t aDate;
+    uint16_t clusterHI;
+    uint16_t mTime;
+    uint16_t mDate;
+    uint16_t cluster;
+    uint32_t size;
+    bool is_free() {
+        return name[0] == 0xe5 || name[0] == 0x00;
+    }
+    bool is_file() {
+        return is_free() == false && attr == ATTR_ARCHIVE;
+    }
+    int cmpDateTime(DirEntry* entry) {
+        if (mDate > entry->mDate) {
+            return 1;
+        } else if (mDate < entry->mDate) {
+            return -1;
+        }
+        if (mTime > entry->mTime) {
+            return 1;
+        } else if (mTime < entry->mTime) {
+            return -1;
+        }
+        return 0;
+    }
+} __attribute__((__packed__));;
+
+struct SectorIndex {
+    int block;
+    const uint8_t* data;
+};
+
+extern const SectorIndex sector_index[]; // RomDiskData.cpp
+
+class RomDisk {
+public:
+    RomDisk();
+    int read(uint8_t * data, uint32_t block);
+    int write(const uint8_t * data, uint32_t block);
+    uint32_t sectors();
+    bool is_fat(uint32_t sector);
+    bool is_rootdir(uint32_t sector);
+    int dir_count(uint32_t sector);
+    uint32_t cluster_to_sector(uint32_t cluster);
+protected:
+    uint64_t _sectors;
+};