hal: force device switch when BT SCO is off

When BT SCO is off, the active use cases may still stay on SCO
devices which is not expected, switch the device to handset or
handset mic before receiving routing command from audio policy
manager.

Change-Id: I5817824fd921b2d5f9e17ee8aed02d0bd2cee0fc

1 files changed, 19 insertions, 3 deletions

diff --git a/hal/audio_hw.c b/hal/audio_hw.c
index 1638a229..9769653c 100644
--- a/hal/audio_hw.c
+++ b/hal/audio_hw.c
@@ -6815,6 +6815,8 @@ static int adev_set_parameters(struct audio_hw_device *dev, const char *kvpairs)
     int val;
     int ret;
     int status = 0;
+    struct listnode *node;
+    struct audio_usecase *usecase = NULL;
 
     ALOGD("%s: enter: %s", __func__, kvpairs);
     parms = str_parms_create_str(kvpairs);
@@ -6822,16 +6824,30 @@ static int adev_set_parameters(struct audio_hw_device *dev, const char *kvpairs)
     if (!parms)
         goto error;
 
+    pthread_mutex_lock(&adev->lock);
     ret = str_parms_get_str(parms, "BT_SCO", value, sizeof(value));
     if (ret >= 0) {
         /* When set to false, HAL should disable EC and NS */
-        if (strcmp(value, AUDIO_PARAMETER_VALUE_ON) == 0)
+        if (strcmp(value, AUDIO_PARAMETER_VALUE_ON) == 0){
             adev->bt_sco_on = true;
-        else
+        } else {
+            ALOGD("route device to handset/mic when sco is off");
             adev->bt_sco_on = false;
+            list_for_each(node, &adev->usecase_list) {
+                usecase = node_to_item(node, struct audio_usecase, list);
+                if ((usecase->type == PCM_PLAYBACK) && usecase->stream.out &&
+                    (usecase->stream.out->devices & AUDIO_DEVICE_OUT_ALL_SCO))
+                    usecase->stream.out->devices = AUDIO_DEVICE_OUT_EARPIECE;
+                else if ((usecase->type == PCM_CAPTURE) && usecase->stream.in &&
+                         (usecase->stream.in->device & AUDIO_DEVICE_IN_ALL_SCO))
+                    usecase->stream.in->device = AUDIO_DEVICE_IN_BUILTIN_MIC;
+                else
+                    continue;
+                select_devices(adev, usecase->id);
+            }
+        }
     }
 
-    pthread_mutex_lock(&adev->lock);
     status = voice_set_parameters(adev, parms);
     if (status != 0)
         goto done;