[FFmpeg-trac] #10174(undetermined:new): wavarc: fix decoding of compression level 0

[FFmpeg]

#10174: wavarc: fix decoding of compression level 0
-------------------------------------+-------------------------------------
             Reporter:  ami_stuff    |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 docompresses correctly with wa32.exe

 {{{
 ./ffmpeg -i 8_33_M_C0.WA -y out.wav
 ffmpeg version N-109763-g3b3a321fed Copyright (c) 2000-2023 the FFmpeg
 developers
   built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1)
   configuration:
   libavutil      57. 44.100 / 57. 44.100
   libavcodec     59. 63.100 / 59. 63.100
   libavformat    59. 38.100 / 59. 38.100
   libavdevice    59.  8.101 / 59.  8.101
   libavfilter     8. 56.100 /  8. 56.100
   libswscale      6.  8.112 /  6.  8.112
   libswresample   4.  9.100 /  4.  9.100
 [wavarc @ 0x55d583d45440] Format wavarc detected only with low score of 1,
 misdetection possible!
 [wavarc @ 0x55d583d45440] Failed to open codec in
 avformat_find_stream_info
     Last message repeated 1 times
 [wavarc @ 0x55d583d45440] Could not find codec parameters for stream 0
 (Audio: wavarc (0CPY / 0x59504330), 33333 Hz, 0 channels, u8p):
 unspecified number of channels
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 Input #0, wavarc, from '8_33_M_C0.WA':
   Duration: N/A, start: 0.000000, bitrate: N/A
   Stream #0:0: Audio: wavarc (0CPY / 0x59504330), 33333 Hz, mono, u8p
 Stream mapping:
   Stream #0:0 -> #0:0 (wavarc (native) -> pcm_s16le (native))
 Error while opening decoder for input stream #0:0 : Invalid data found
 when processing input
 }}}
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10174>
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