[Gnash-commit] [bug #45722] Gnash emitted loud screech after playing PCM audio object

[Nutchanon Wetchasit]

Follow-up Comment #26, bug #45722 (project gnash):

Note (for the record): embeded 8-bit PCM `UNCOMPRESSED` and `RAW` event sound
is encoded in an _unsigned_ 8-bit PCM format.

If you run following commands with `pcmplay-8bit.swf` and
`rawpcmplay-8bit.swf`
you will hear the correct siren sound:

swfmill swf2xml pcmplay-8bit.swf | sed -n 's/.*<data>([^<]*)</data>/1/p' |
base64 -d | aplay -t raw -f U8 -r 44100
swfmill swf2xml rawpcmplay-8bit.swf | sed -n 's/.*<data>([^<]*)</data>/1/p' |
base64 -d | aplay -t raw -f U8 -r 44100


But if you changed the `-f U8` part to `-f S8` (signed PCM), you'd hear a
hoarse wailing instead.

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