Music: Difference between revisions

Latest revision as of 12:32, 18 April 2019

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-== Technical Information ==
+#REDIRECT [[JUKEBOX.SI]]
-Music is stored in Lego Island SI files. SI files are derivatives of the {{Wikipedia|Resource Interchange File Format}} best known as the basis of AVI and WAV files.
-All music appears to be 11025Hz Mono Signed 16-bit. All bytes are little endian.
-Music appears to begin with a <code>MxDa</code> and is split into chunks of <code>MxCh</code>. The <code>MxDa</code> header contains information about the PCM audio in the <code>MxCh</code> chunks. The first <code>MxCh</code> appears to be information about the remainder of the chunks in the <code>MxDa</code> structure.
-'''MxDa Header Specification'''
-{| class="wikitable"
-|-
-! Bytes !! Offset !! Description
-|-
-| <code>MxDa</code> || 0 || Identifier
-|-
-| <code>MxCh</code> || 4 || Chunk Header
-|-
-| Sub-Chunk Size || 22 || 4-byte Integer - The remaining size of this chunk after this value
-|-
-| Audio Format || 26 || 2-byte Integer - 1 = PCM, others indicate some form of compression
-|-
-| Number of Channels || 28 || 2-byte Integer - 1 = Mono, 2 = Stereo
-|-
-| Sample Rate || 30 || 4-byte Integer
-|-
-| Byte Rate || 34 || 4-byte Integer - is equal to <code>Sample Rate * Number of Channels * BitsPerSample/8</code>
-|-
-| Bytes per Sample || 36 || 2-byte Integer - is equal to <code>Number of Channels * BitsPerSample/8</code>
-|-
-| Bits per Sample per Channel || 38 || 2-byte Integer - 8 = 8-bit, 16 = 16-bit, etc.
-|}