added custom master and playback mixer controls for hal-most-unicens

1 files changed, 20 insertions, 5 deletions

diff --git a/HAL-afb/hal-most-unicens/hal_most_unicens.c b/HAL-afb/hal-most-unicens/hal_most_unicens.c
index a98906c..388b840 100644
--- a/HAL-afb/hal-most-unicens/hal_most_unicens.c
+++ b/HAL-afb/hal-most-unicens/hal_most_unicens.c
@@ -19,11 +19,27 @@
 #include "hal-interface.h"
 #include "audio-interface.h" 
 
+static int master_volume;
+static int master_switch;
+static int pcm_volume;
+
+void unicens_volume_cb(halCtlsEnumT tag, alsaHalCtlMapT *control, void* handle,  json_object *valuesJ) {
+    
+    AFB_NOTICE("UNICENS Volume tag=%d, vol=%d, min=%d, max=%d", tag, control->value, control->minval, control->maxval);
+    
+}
+
 /* declare ALSA mixer controls */
 STATIC alsaHalMapT  alsaHalMap[]= { 
-  { .tag=Master_Playback_Volume, .ctl={.name="Master Playback Volume" } },
-  { .tag=Master_OnOff_Switch   , .ctl={.name="Master Playback Switch" } },
-  { .tag=PCM_Playback_Volume   , .ctl={.name="PCM Playback Volume"    } },
+  { .tag=Master_Playback_Volume, .cb={.callback=unicens_volume_cb, .handle=&master_volume}, .info="Sets master playback volume",
+    .ctl={.numid=0, .type=SND_CTL_ELEM_TYPE_INTEGER, .count=1, .minval=0, .maxval=100, .step=1, .value=50, .name="Master Playback Volume"}   
+  },
+  { .tag=Master_OnOff_Switch, .cb={.callback=unicens_volume_cb, .handle=&master_switch}, .info="Sets master playback switch",
+    .ctl={.numid=0, .type=SND_CTL_ELEM_TYPE_BOOLEAN, .count=1, .minval=0, .maxval=1, .step=1, .value=1, .name="Master Playback Switch"}   
+  }, 
+  { .tag=PCM_Playback_Volume, .cb={.callback=unicens_volume_cb, .handle=&pcm_volume}, .info="Sets PCM playback volume",
+    .ctl={.numid=0, .type=SND_CTL_ELEM_TYPE_INTEGER, .count=6, .minval=0, .maxval=100, .step=1, .value=100, .name="PCM Playback Volume"}   
+  },
   { .tag=EndHalCrlTag}              /* marker for end of the array */
 } ;
 
@@ -35,7 +51,6 @@ STATIC alsaHalSndCardT alsaHalSndCard  = {
     .volumeCB = NULL,               /* use default volume normalization function */
 };
 
-
 STATIC int sndServiceInit () {
     int err;
     AFB_DEBUG ("Initializing HAL-MOST-UNICENS-BINDING");
@@ -44,7 +59,7 @@ STATIC int sndServiceInit () {
     return err;
 }
 
-// API prefix should be unique for each snd card
+/* API prefix should be unique for each snd card */
 PUBLIC const struct afb_binding_v2 afbBindingV2 = {
     .api     = "hal-most-unicens",
     .init    = sndServiceInit,