[FFmpeg-trac] #11011(undetermined:new): Add support for .pda (Playdate audio format)

[FFmpeg]

#11011: Add support for .pda (Playdate audio format)
-------------------------------------+-------------------------------------
             Reporter:  matt         |                     Type:  defect
  sephton                            |
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:  audio adpcm  |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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 Feature request:

 - support playback of .pda (Playdate audio)
 - it's a container for
   - 4-bit IMA ADPCM
   - 8-bit PCM
   - 16-bit PCM

 Reasoning:

 - there is currently no way to play back this type of audio outside of
 bundling in a game
 - so it's very difficult to preview such files

 Format spec:

 - ​https://github.com/jaames/playdate-reverse-
 engineering/blob/main/formats/pda.md

 Example files attached
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/11011>
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