Readium LCP for Audiobooks 1.0

Revision: 2

Contributors: Laurent Le Meur (EDRLab), Hadrien Gardeur (De Marque)

Requirements

LCP for Audiobooks is based on the Audiobook Profile of the Readium Web Publication Manifest and follows its requirements for packaging.
Every package must use:
- the .lcpau extension
- the application/audiobook+lcp media type
An embedded LCP License Document must be located at license.lcpl
A cover should be referenced in resources of manifest.json and, if present, must not be encrypted.
Encrypted audio resources referenced in the readingOrder must not be compressed in the package.
A type property must be set for each audio resource.
A bitrate, duration, sizeproperty should be set for each audio resource. The latter is the size in bytes of the audio resource before compression and encryption.
An encrypted must be set in properties for each audio resource, where:
- scheme must be set to http://readium.org/2014/01/lcp
- algorithm must be set; it indicates the encryption algorithm applied to the document, currently “http://www.w3.org/2001/04/xmlenc#aes256-cbc”.

Example

{
  "@context": "http://readium.org/webpub-manifest/context.jsonld",
  
  "metadata": {
    "@type": "http://schema.org/Audiobook",
    "identifier": "urn:isbn:9780000000001",
    "title": "Moby-Dick",
    "author": "Herman Melville",
    "narrator": ["Joe Speaker", "Lucy Narrator"],
    "language": "en",
    "publisher": "Whale Publishing Ltd.",
    "published": "2016-02-01",
    "modified": "2016-02-18T10:32:18Z",
    "duration": 4320
  },

  "links": [
    {
      "rel": "self", 
      "href": "manifest.json", 
      "type": "application/audiobook+json"
    }
  ],

  "readingOrder": [
    {
      "href": "part1.mp3", 
      "type": "audio/mpeg", 
      "bitrate": 128, 
      "duration": 1980, 
      "title": "Part 1",
      "properties": {
        "encrypted": {
          "scheme": "http://readium.org/2014/01/lcp",
          "algorithm": "http://www.w3.org/2001/04/xmlenc#aes256-cbc"
        }
      }
    }, 
    {
      "href": "part2.mp3", 
      "type": "audio/mpeg", 
      "bitrate": 128, 
      "duration": 1200, 
      "title": "Part 2",
      "properties": {
        "encrypted": {
          "scheme": "http://readium.org/2014/01/lcp",
          "algorithm": "http://www.w3.org/2001/04/xmlenc#aes256-cbc"
        }
      }
    }, 
    {
      "href": "part3.mp3", 
      "type": "audio/mpeg", 
      "bitrate": 128, 
      "duration": 1140, 
      "title": "Part 3",
      "properties": {
        "encrypted": {
          "scheme": "http://readium.org/2014/01/lcp",
          "algorithm": "http://www.w3.org/2001/04/xmlenc#aes256-cbc"
        }
      }
    }
  ],
  
  "resources": [
    {
      "rel": "cover", 
      "href": "cover.jpeg", 
      "type": "image/jpeg", 
      "height": 300, 
      "width": 300
    }
  ]
}