From afb7b74873f5c1d69e6891652613762a171bb79b Mon Sep 17 00:00:00 2001
From: "Ronald S. Bultje" <rbultje@ronald.bitfreak.net>
Date: Sun, 29 Aug 2004 19:37:38 +0000
Subject: [PATCH] ext/alsa/: Add switches (simple boolean on/off).

Original commit message from CVS:
* ext/alsa/gstalsamixer.c: (gst_alsa_mixer_build_list):
* ext/alsa/gstalsamixertrack.c: (gst_alsa_mixer_track_new):
Add switches (simple boolean on/off).
---
 ChangeLog                    |  6 ++++++
 ext/alsa/gstalsamixer.c      | 18 ++++++++++++++----
 ext/alsa/gstalsamixertrack.c | 10 ++++++----
 3 files changed, 26 insertions(+), 8 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 154f687944..9927e731f4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2004-08-29  Ronald S. Bultje  <Ronald S. Bultje <rbultje@ronald.bitfreak.net>>
+
+	* ext/alsa/gstalsamixer.c: (gst_alsa_mixer_build_list):
+	* ext/alsa/gstalsamixertrack.c: (gst_alsa_mixer_track_new):
+	  Add switches (simple boolean on/off).
+
 2004-08-27  David Schleef  <ds@schleef.org>
 
 	* sys/glsink/glimagesink.c: (gst_glimagesink_ximage_put),
diff --git a/ext/alsa/gstalsamixer.c b/ext/alsa/gstalsamixer.c
index d8867d61e3..fb664d5131 100644
--- a/ext/alsa/gstalsamixer.c
+++ b/ext/alsa/gstalsamixer.c
@@ -266,6 +266,7 @@ gst_alsa_mixer_build_list (GstAlsaMixer * mixer)
   for (i = 0; i < count; i++) {
     gint channels = 0;
     gint flags = GST_MIXER_TRACK_OUTPUT;
+    gboolean got_it = FALSE;
 
     if (snd_mixer_selem_has_capture_switch (element)) {
       if (dir != GST_PAD_SRC && dir != GST_PAD_UNKNOWN)
@@ -279,13 +280,10 @@ gst_alsa_mixer_build_list (GstAlsaMixer * mixer)
     if (snd_mixer_selem_has_capture_volume (element)) {
       while (snd_mixer_selem_has_capture_channel (element, channels))
         channels++;
-      if (first) {
-        first = FALSE;
-        flags |= GST_MIXER_TRACK_MASTER;
-      }
       track = gst_alsa_mixer_track_new (element, i, channels,
           flags, GST_ALSA_MIXER_TRACK_CAPTURE);
       mixer->tracklist = g_list_append (mixer->tracklist, track);
+      got_it = TRUE;
     }
 
     if (snd_mixer_selem_has_playback_volume (element)) {
@@ -298,11 +296,23 @@ gst_alsa_mixer_build_list (GstAlsaMixer * mixer)
       track = gst_alsa_mixer_track_new (element, i, channels,
           flags, GST_ALSA_MIXER_TRACK_PLAYBACK);
       mixer->tracklist = g_list_append (mixer->tracklist, track);
+      got_it = TRUE;
     }
 
     if (snd_mixer_selem_is_enumerated (element)) {
       opts = gst_alsa_mixer_options_new (element, i);
       mixer->tracklist = g_list_append (mixer->tracklist, opts);
+      got_it = TRUE;
+    }
+
+    if (!got_it) {
+      if (flags == GST_MIXER_TRACK_OUTPUT &&
+          snd_mixer_selem_has_playback_switch (element)) {
+        /* simple mute switch */
+        track = gst_alsa_mixer_track_new (element, i, 0,
+            flags, GST_ALSA_MIXER_TRACK_PLAYBACK);
+        mixer->tracklist = g_list_append (mixer->tracklist, track);
+      }
     }
 
     element = snd_mixer_elem_next (element);
diff --git a/ext/alsa/gstalsamixertrack.c b/ext/alsa/gstalsamixertrack.c
index c6a8f14117..7db05016d5 100644
--- a/ext/alsa/gstalsamixertrack.c
+++ b/ext/alsa/gstalsamixertrack.c
@@ -86,10 +86,12 @@ gst_alsa_mixer_track_new (snd_mixer_elem_t * element,
   alsa_track->track_num = track_num;
 
   /* set volume information */
-  if (alsa_flags & GST_ALSA_MIXER_TRACK_PLAYBACK) {
-    snd_mixer_selem_get_playback_volume_range (element, &min, &max);
-  } else if (alsa_flags & GST_ALSA_MIXER_TRACK_CAPTURE) {
-    snd_mixer_selem_get_capture_volume_range (element, &min, &max);
+  if (channels) {
+    if (alsa_flags & GST_ALSA_MIXER_TRACK_PLAYBACK) {
+      snd_mixer_selem_get_playback_volume_range (element, &min, &max);
+    } else if (alsa_flags & GST_ALSA_MIXER_TRACK_CAPTURE) {
+      snd_mixer_selem_get_capture_volume_range (element, &min, &max);
+    }
   }
   track->min_volume = (gint) min;
   track->max_volume = (gint) max;