OggOpus/testvectors

This page lists test vectors needed for OggOpus which are specific to the Ogg mapping (separate from the opus bitstream test vectors, though they do some bitstream testing as a side efffect)

• All test vectors should be chained files with at least two parts
  • Chained file where the second link has no pregap and starts with inter frames (to ensure that decoder state is reset)
• Pregap (set large pre-gap with a chime "if you just heard a chime, your player is broken")
• Multichannel
  • Multichannel stereo (e.g. mono+mono)
  • Multichannel w/pregap and random channel maps
  • Multichannel with silent channels
    • Totally silent multichannel
  • Multichannel with 256 channels
  • Mapping tests for the Vorbis mappings (e.g. name of the speaker spoken by each speaker)
• Files with replaygain metadata (esp files which are obviously too quiet/loud without applying replaygain)
  • Multiple identical ReplayGain comments in OpusTags
  • matching unnormalized WAV output.
• Files with crazy input rate.
• Header-gain set very high with a very quiet input (silent if you don't implement header gain).
• Header-gain set very low with an input that will clip a decoder if the header gain is not done internally.
• Single packet per page
• Utterly stuffed pages with constant continued pages
• Pages whose contents are entirely and partially dropped frames (len=0) (maybe redundant with bitstream tests)
• Files with chimes after the end (testing end length chopping)
• File with all opus modes and frame sizes
• Stereo files using many mono frames at the beginning/end
• OpusTags comment values containing very large nonsense comments, duplicate comment values etc.

• Illegal test vectors that must fail
  • Zero streams (N=0)
  • Too many two-output streams
    • M>N
    • M<=N but M+N>255
  • Channels mapped to nonexistent stream indices (255 > index >= M+N)
  • Illegal OpusTags comments
    • Total length larger or shorter than the packet
    • Illegal field names
    • Illegal field contents
    • Illegal field (no "=")
    • Multiple conflicting ReplayGain comments
    • ReplayGain comments containing illegal values
      • Weird encodings of correct-looking values?
• All GP==0