sys/sunaudio/gstsunaudiomixerctrl.c: Improvements for the SunAudio mixer by handling mute as no gain for tracks that ...

Original commit message from CVS:
Patch by: Brian Cameron <brian.cameron at sun dot com>
* sys/sunaudio/gstsunaudiomixerctrl.c:
(gst_sunaudiomixer_ctrl_get_volume),
(gst_sunaudiomixer_ctrl_set_volume):
Improvements for the SunAudio mixer by handling mute as no gain
for tracks that have a gain property but no mute property.
Fixes bug #536067.

1 files changed, 31 insertions, 4 deletions

diff --git a/sys/sunaudio/gstsunaudiomixerctrl.c b/sys/sunaudio/gstsunaudiomixerctrl.c
index ef296a3aa..15fe11472 100644
--- a/sys/sunaudio/gstsunaudiomixerctrl.c
+++ b/sys/sunaudio/gstsunaudiomixerctrl.c
@@ -73,6 +73,7 @@ void
 gst_sunaudiomixer_ctrl_build_list (GstSunAudioMixerCtrl * mixer)
 {
   GstMixerTrack *track;
+
   struct audio_info audioinfo;
 
   /*
@@ -175,8 +176,11 @@ gst_sunaudiomixer_ctrl_get_volume (GstSunAudioMixerCtrl * mixer,
     GstMixerTrack * track, gint * volumes)
 {
   gint gain, balance;
+
   float ratio;
+
   struct audio_info audioinfo;
+
   GstSunAudioMixerTrack *sunaudiotrack = GST_SUNAUDIO_MIXER_TRACK (track);
 
   g_return_if_fail (mixer->mixer_fd != -1);
@@ -242,12 +246,12 @@ gst_sunaudiomixer_ctrl_get_volume (GstSunAudioMixerCtrl * mixer,
   if ((sunaudiotrack->track_num == GST_SUNAUDIO_TRACK_OUTPUT &&
           audioinfo.output_muted == 1) ||
       (sunaudiotrack->track_num != GST_SUNAUDIO_TRACK_OUTPUT && gain == 0)) {
-    track->flags |= GST_MIXER_TRACK_MUTE;
-  } else {
     /*
      * If MUTE is set, then gain is always 0, so don't bother
      * resetting our internal value.
      */
+    track->flags |= GST_MIXER_TRACK_MUTE;
+  } else {
     sunaudiotrack->gain = gain;
     sunaudiotrack->balance = balance;
     track->flags &= ~GST_MIXER_TRACK_MUTE;
@@ -259,13 +263,21 @@ gst_sunaudiomixer_ctrl_set_volume (GstSunAudioMixerCtrl * mixer,
     GstMixerTrack * track, gint * volumes)
 {
   gint gain;
+
   gint balance;
+
   gint l_real_gain;
+
   gint r_real_gain;
+
   float ratio;
+
   gchar buf[100];
+
   struct audio_info audioinfo;
+
   GstSunAudioMixerTrack *sunaudiotrack = GST_SUNAUDIO_MIXER_TRACK (track);
+
   gint temp[2];
 
   l_real_gain = volumes[0];
@@ -289,8 +301,19 @@ gst_sunaudiomixer_ctrl_set_volume (GstSunAudioMixerCtrl * mixer,
   sunaudiotrack->gain = gain;
   sunaudiotrack->balance = balance;
 
-  if (GST_MIXER_TRACK_HAS_FLAG (track, GST_MIXER_TRACK_MUTE))
-    return;
+  if (GST_MIXER_TRACK_HAS_FLAG (track, GST_MIXER_TRACK_MUTE)) {
+    if (sunaudiotrack->track_num == GST_SUNAUDIO_TRACK_OUTPUT) {
+      return;
+    } else if (gain == 0) {
+      return;
+    } else {
+      /*
+       * If the volume is set to a non-zero value for LINE_IN
+       * or MONITOR, then unset MUTE.
+       */
+      track->flags &= ~GST_MIXER_TRACK_MUTE;
+    }
+  }
 
   /* Set the volume */
   AUDIO_INITINFO (&audioinfo);
@@ -323,7 +346,9 @@ gst_sunaudiomixer_ctrl_set_mute (GstSunAudioMixerCtrl * mixer,
     GstMixerTrack * track, gboolean mute)
 {
   struct audio_info audioinfo;
+
   GstSunAudioMixerTrack *sunaudiotrack = GST_SUNAUDIO_MIXER_TRACK (track);
+
   gint volume, balance;
 
   AUDIO_INITINFO (&audioinfo);
@@ -372,7 +397,9 @@ gst_sunaudiomixer_ctrl_set_record (GstSunAudioMixerCtrl * mixer,
     GstMixerTrack * track, gboolean record)
 {
   GstSunAudioMixerTrack *sunaudiotrack = GST_SUNAUDIO_MIXER_TRACK (track);
+
   struct audio_info audioinfo;
+
   GList *trk;
 
   /* Don't change the setting */