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

[Nutchanon Wetchasit]

Follow-up Comment #22, bug #45722 (project gnash):

The attached file (`rawpcmplay.zip`) contain test SWF files for raw PCM
event sound in combination of both bit depth 16-bit (little endian) and
8-bit,
both 1 and 2 channels, together with source sound, code, and build scripts.

Testing current Gnash git using `rawpcmplay-8bit.swf` and
`rawpcmplay-stereo-8bit.swf`
on both media handler backend yields result similar to `pcmplay-8bit.swf` and
`pcmplay-stereo-8bit.swf`:

* FFmpeg/libAV backend:
** `rawpcmplay-8bit.swf`: played with weird wail followed
** `rawpcmplay-stereo-8bit.swf`: aborted, or crashed
* GStreamer backend:
** `rawpcmplay-8bit.swf: played OK
** `rawpcmplay-stereo-8bit.swf`: played with gibberish followed, or crashed 

On the other hand, raw little-endian _16-bit_ PCM (both mono and stereo)
seems to play properly on both FFmpeg and Gstreamer media handler.

Gnash: 0.8.11dev (git f5016cc 9-Sep-2015)
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)
CSound: libcsound64-5.2 1:5.17.11~dfsg-3 (debian)
System: Debian GNU/Linux 7.0 Wheezy i386

(file #34872)
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Additional Item Attachment:

File name: rawpcmplay.zip                 Size:632 KB


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