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69 lines
2.2 KiB
Plaintext
69 lines
2.2 KiB
Plaintext
APNX
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----
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apnx files are used by the Amazon Kindle (firmware revision 3.1+) to
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map pages from a print book to the Kindle version. Integers within
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the file are big-endian.
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Layout
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------
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bytes content comments
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4 00010001 Format identifier. Value of 65537 little-endian.
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4 start of next The offset after ending location of the first header.
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Starts a new sequence of header info
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4 length Length of first header
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N first header String containing content header
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Starts next sequence
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2 unknown Always 1
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2 length Length of second header
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2 page count Total number of bytes after second header that
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represent pages. This total includes bytes that
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are ignored by the pageMap.
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2 unknown Always 32
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N second header String containing the page mapping header
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4*N padding The first number given in the page mapping header indicates the number of 0 bytes.
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4*N page list
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Content Header
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--------------
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The content header is a string enclosed in {} containing key, value pairs.
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content comments
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contentGuid Guid.
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asin Amazon identifier for the Kindle version of the book.
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cdeType MOBI cdeType. Should always be EBOK for ebooks.
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fileRevisionId Revision of this file.
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Example:
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{"contentGuid":"d8c14b0","asin":"B000JML5VM","cdeType":"EBOK","fileRevisionId":"1296874359405"}
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Page Mapping Header
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-------------------
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The page mapping header is a string enclosed in {} containing key, value pairs.
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content comments
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asin The ISBN 10 for the paper book the pages correspond to
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pageMap Three value tuple. Looks like: "(N,N,N)"
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1) Number of bytes after header that starts the page numbering sequence
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2) unknown
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3) unknown
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Example:
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{"asin":"1906694184","pageMap":"(4,a,1)"}
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Page List
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---------
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The page list is a sequence of offsets in the uncompressed HTML. Each
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value is the beginning of a new page. Each entry is a 4 byte big endian
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int. The list is ordered lowest to highest. |