Change read function signature.

include/dicformat/decls.h

@@ -44,7 +44,7 @@ void *open(const char *filepath);
 
 int close(void *context);
 
-uint8_t *read_media_tag(void *context, int32_t tag, uint32_t *length);
+int32_t read_media_tag(void *context, uint8_t *data, int32_t tag, uint32_t *length);
 
 void *crc64_init(uint64_t polynomial, uint64_t seed);
 
@@ -58,6 +58,6 @@ uint64_t crc64_data(const uint8_t *data, size_t len, uint64_t polynomial, uint64
 
 uint64_t crc64_data_ecma(const uint8_t *data, size_t len);
 
-uint8_t *read_sector(void *context, uint64_t sectorAddress, uint32_t *length);
+int32_t read_sector(void *context, uint64_t sectorAddress, uint8_t *data, uint32_t *length);
 
 #endif //LIBDICFORMAT_DECLS_H

include/dicformat/enums.h

@@ -236,6 +236,10 @@ typedef enum
             CdMode2Form2    = 5
 } TrackType;
 
+typedef enum
+{
+    DICF_STATUS_INVALID_CONTEXT = -1,
+} DicformatStatus;
 
 #endif //LIBDICFORMAT_ENUMS_H
 

include/dicformat/errors.h

@@ -13,5 +13,13 @@
 #define DICF_ERROR_CANNOT_READ_HEADER -6
 #define DICF_ERROR_CANNOT_READ_BLOCK -7
 #define DICF_ERROR_UNSUPPORTED_COMPRESSION -8
+#define DICF_ERROR_NOT_ENOUGH_MEMORY -9
+#define DICF_ERROR_BUFFER_TOO_SMALL -10
+#define DICF_ERROR_MEDIA_TAG_NOT_PRESENT -11
+
+#define DICF_STATUS_OK 0
+#define DICF_STATUS_SECTOR_NEVER_WRITTEN 1
+#define DICF_STATUS_SECTOR_WITH_ERRORS 2
+#define DICF_STATUS_SECTOR_DELETED 3
 
 #endif //LIBDICFORMAT_ERRORS_H