[gstreamer-bugs] [Bug 584252] enhancements to OSSv4 plugin

GStreamer (bugzilla.gnome.org) bugzilla-daemon at bugzilla.gnome.org
Wed Jun 3 11:23:14 PDT 2009

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  GStreamer | gst-plugins-bad | Ver: 0.10.x

Brian Cameron changed:

           What    |Removed                     |Added
 Attachment #135597|0                           |1
        is obsolete|                            |

------- Comment #3 from Brian Cameron  2009-06-03 18:23 UTC -------
Created an attachment (id=135901)
 --> (http://bugzilla.gnome.org/attachment.cgi?id=135901&action=view)
updated patch

Note that many of the changes in this patch are related to adding new flags to
gst-plugins-base.  Refer:


Now that these changes are upstream, it would be good to support the new flags
in the OSSv4 plugin.

I have attached an updated patch.  I believe this updated patch cleans up the
code so it conforms to the style and removes some unnecessary changes.

Here is some detail on the changes:

1) oss4-audio.c is modified to simplify the fragsize computation.

2) oss4-mixer-slider.c is modified to support the new mixer-related flag and 
   also contains this change:

       if (mute) {
  +      /* make sure the current volume values get saved. */
  +      gst_oss4_mixer_slider_get_volume (s, s->volumes);
         volume = 0;
       } else {

  This change fixes a problem where the volumes weren't getting saved before
  muting for the first time.  Calling gst_oss4_mixer_slider_get_volume makes
  sure the volumes are cached before setting to 0.  Otherwise, when you mute
  and then unmute, the volume wouldn't get restored.

3) oss4-mixer.c contains improvements on how mixer labels are translated,
   the GST_OSS4_MIXER_WATCH_INTERVAL was changed from 500 to 150ms. the
   guess_master code was improved, and support for the new flags.

4) oss4-mixer-switch now supports the new mute-related flag.

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