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

[Nutchanon Wetchasit]

Follow-up Comment #1, bug #45722 (project gnash):

I have tested more by using the same sound but _in stereo_ instead of mono,
the symptom got interesting.

The attached `pcmplay-stereo_fp11.2.202.491.ogv` is a video result from Adobe
Flash:
You'll see that siren sound played and stopped normally. 

The attached `pcmplay-stereo_gnash0.8.11dev-f341372.ffmpeg.ogv` is a video
result from Gnash using FFmpeg/libAV media handler:
You'd see that there're now two screech, emitted in the middle
of siren sound instead of at the end.

On the other hand, with Gnash using GStreamer media handler,
Gnash window was shown in a blink before it terminated with an assertion
error
(no sound was audible).

3623:1] 354 ACTIONSCRIPT ERROR: reference to non-existent variable
'PCMPlayStereo'
3623:1] 355 DEBUG: Loading native class Sound
3623:1] 355 DEBUG: Sound.start: secOff:0 loops:0
3623:1] 371 DEBUG: AudioDecoderSimple: initialized flash codec 3
(Uncompressed)
gtk-gnash: EmbedSoundInst.cpp:118: virtual void
gnash::sound::EmbedSoundInst::decodeNextBlock(): Assertion
`!(decodedDataSize%2)' failed.


Full Gnash logs of both case (verbosity=2 + action error log), full GDB
backtrace output of GStreamer case, test source code, sound, and build script
are attached (pcmplay-stereo.zip).

Gnash: 0.8.11dev (git f341372 25-Aug-2015)
Adobe Flash Player: 11.2 r202 (11.2.202.491) standalone
SDL: libsdl1.2debian 1.2.15-5 (debian)
libAV: libavcodec53 6:0.8.17-1 (debian), libavformat53 6:0.8.17-1 (debian),
libavutil51 6:0.8.17-1 (debian)
GStreamer: libgstreamer0.10-0 0.10.36-1.2 (debian)
System: Debian GNU/Linux 7.0 Wheezy i386

(file #34753)
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Additional Item Attachment:

File name: pcmplay-stereo.zip             Size:298 KB


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