Ticket #3220: null_audio.patch2

Index: null_multi.c
===================================================================
--- null_multi.c    (revision 28814)
+++ null_multi.c    (working copy)
@@ -150,13 +150,48 @@
 static status_t
 list_mix_controls(device_t* device, multi_mix_control_info * data)
 {
-   int32 parent;
+   int32 parent, i;
+   const char* srcs[] = {"1", "2", "3"};
+
    dprintf("null_audio: %s\n" , __func__ );
 
    parent = create_group_control(data->controls +0, 0, 0, 0, "Record");
    parent = create_group_control(data->controls +1, 1, 0, 0, "Playback");
-   data->control_count = 2;
+   
+    data->controls[2].id = MULTI_AUDIO_BASE_ID + 100;
+    data->controls[2].parent = parent;
+    data->controls[2].flags = B_MULTI_MIX_GAIN;
+    data->controls[2].master = MULTI_AUDIO_MASTER_ID;
+    data->controls[2].string = S_GAIN;
+    data->controls[2].u.gain.min_gain = 0.;
+    data->controls[2].u.gain.max_gain = 100.;
+    data->controls[2].u.gain.granularity = 1.;
+   
+    data->controls[3].id = MULTI_AUDIO_BASE_ID + 200;
+    data->controls[3].parent = parent;
+    data->controls[3].flags = B_MULTI_MIX_GAIN;
+    data->controls[3].master = data->controls[2].id;
+    data->controls[3].string = S_GAIN;
+    data->controls[3].u.gain.min_gain = 0.;
+    data->controls[3].u.gain.max_gain = 100.;
+    data->controls[3].u.gain.granularity = 1.;
 
+    data->controls[4].id = MULTI_AUDIO_BASE_ID + 300;
+    data->controls[4].parent = parent;
+    data->controls[4].flags = B_MULTI_MIX_MUX;
+    data->controls[4].string = S_GAIN;
+
+   for(i = 0; i < 3; i++) {
+       data->controls[i + 5].id    = data->controls[4].id + i + 10;
+       data->controls[i + 5].flags = B_MULTI_MIX_MUX_VALUE;
+       data->controls[i + 5].master    = 0;
+       data->controls[i + 5].string    = S_null;
+       data->controls[i + 5].parent    = data->controls[4].id;
+       strncpy(data->controls[i + 5].name, srcs[i], sizeof(data->controls[i + 5].name));
+   }
+
+   data->control_count = 8;
+
    return B_OK;
 }
 
@@ -334,8 +369,16 @@
        case B_MULTI_SET_GLOBAL_FORMAT:         return set_global_format(cookie, arg);
        case B_MULTI_GET_CHANNEL_FORMATS:       return B_ERROR;
        case B_MULTI_SET_CHANNEL_FORMATS:       return B_ERROR;
-       case B_MULTI_GET_MIX:                   return B_ERROR;
-       case B_MULTI_SET_MIX:                   return B_ERROR;
+       case B_MULTI_GET_MIX:                   return B_OK;
+       case B_MULTI_SET_MIX:                   
+       {
+           multi_mix_value_info *info = (multi_mix_value_info *)arg;
+           int i = 0;
+           for(i=0; i < info->item_count; i++) {
+               dprintf("SET_MIX:item #%d id:%d\n", i, info->values[i].id);
+           }
+           return B_OK;
+       }
        case B_MULTI_LIST_MIX_CHANNELS:         return list_mix_channels(cookie, arg);
        case B_MULTI_LIST_MIX_CONTROLS:         return list_mix_controls(cookie, arg);
        case B_MULTI_LIST_MIX_CONNECTIONS:      return list_mix_connections(cookie, arg);