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

[Nutchanon Wetchasit]

Follow-up Comment #6, bug #45722 (project gnash):

I've re-tested the regression on a new system where modern FFmpeg/libAV is
available.

I think it's important to note that Gnash's FFmpeg and GStreamer backend
_are both affected_ by this issue, and traced back to the same commit
<https://savannah.gnu.org/bugs/?45722#comment3>.
Though the symptom of pcmplay-stereo case is a bit different between FFmpeg
and GStreamer (double screech V.S. assertion failure).

These are summary of result on Gnash playing two attached test files:
* Pre-regression commit (77966b2
<http://git.savannah.gnu.org/cgit/gnash.git/commit/?id=77966b2317f6f4914b5f10c49852ffe6c7881cab>),
FFmpeg/libAV backend:
** pcmplay.swf: played OK
** pcmplay-stereo.swf: played OK
* Pre-regression commit (77966b2
<http://git.savannah.gnu.org/cgit/gnash.git/commit/?id=77966b2317f6f4914b5f10c49852ffe6c7881cab>),
GStreamer backend:
** pcmplay.swf: played OK
** pcmplay-stereo.swf: played OK
* Regression commit (7a53cb3
<http://git.savannah.gnu.org/cgit/gnash.git/commit/?id=7a53cb38d4b3f8a8f6160a40e2912133663c1ab3>),
FFmpeg/libAV backend:
** pcmplay.swf: *played with screech*
** pcmplay-stereo.swf: *played with double screech* 
* Regression commit (7a53cb3
<http://git.savannah.gnu.org/cgit/gnash.git/commit/?id=7a53cb38d4b3f8a8f6160a40e2912133663c1ab3>),
GStreamer backend:
** pcmplay.swf: *played with screech*
** pcmplay-stereo.swf: *assertion failed*

Screech sounds are apprently the same as ones in each corresponding videos
attached earlier
(`pcmplay_gnash0.8.11dev-6b269f9.ogv` for FFmpeg-mono and GStreamer-mono,
`pcmplay-stereo_gnash0.8.11dev-f341372.ffmpeg.ogv` for FFmpeg-stereo)

Assertion failure message in GStreamer-stereo case is still the same as
comment 1 <https://savannah.gnu.org/bugs/?45722#comment1>
(GDB backtrace using f341372 is also available inside the `pcmplay-stereo.zip`
attached earlier)

Gnash: 0.8.11dev (git 77966b2), 0.8.11dev (git 7a53cb3)
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

    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?45722>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/