[FFmpeg-trac] #4540(avcodec:new): ADX sample count is not written to ADX header

[FFmpeg]

#4540: ADX sample count is not written to ADX header
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             Reporter:  misty       |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:
             Keywords:  adpcm adx   |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by misty):

 You can calculate the size given the stream offset and the final size of
 the file, by doing:

 (file_size - stream_offset) / channel_count / frame_size *
 samples_per_frame

 For example, I encoded a stereo file in FFmpeg which ended up at 8643060
 bytes long; according to the header written by FFmpeg, the first frame is
 located at 36 bytes, and the frame size is the standard 18 bytes
 containing 32 samples, so the file is 7682688 samples. If I use a hex
 editor to change the 4 bytes starting at 0xC to 00753A80 then all three
 decoders I've tested with interpret the file correctly.

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Ticket URL: <https://trac.ffmpeg.org/ticket/4540#comment:4>
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