【Qualcomm音频】在设备没有听筒时，如何强制开启免提通话模式？

由于类似平板、贩卖机、车载等产品定义上都没有听筒这种音频设备，因此会经常遇到这样一个需求：强制免提。

以下是修改diff，请参考。

diff --git a/packages/services/Telecomm/src/com/android/server/telecom/CallAudioManager.java b/packages/services/Telecomm/src/com/android/server/telecom/CallAudioManager.java
index 78a92eb..b87ffbb 100644
--- a/packages/services/Telecomm/src/com/android/server/telecom/CallAudioManager.java
+++ b/packages/services/Telecomm/src/com/android/server/telecom/CallAudioManager.java
@@ -379,7 +379,12 @@ public class CallAudioManager extends CallsManagerListenerBase {
      * @param route The new audio route to use. See {@link CallAudioState}.
      */
     void setAudioRoute(int route) {
-        Log.v(this, "setAudioRoute, route: %s", CallAudioState.audioRouteToString(route));
+        Log.v(this, "setAudioRoute,before Changed route: %s", CallAudioState.audioRouteToString(route));
+        if(CallAudioState.ROUTE_EARPIECE == route || CallAudioState.ROUTE_WIRED_OR_EARPIECE  == route){
+	    route = CallAudioState.ROUTE_SPEAKER;
+	}
+        Log.v(this, "setAudioRoute,after Changed route: %s", CallAudioState.audioRouteToString(route));
         switch (route) {
             case CallAudioState.ROUTE_BLUETOOTH:
                 mCallAudioRouteStateMachine.sendMessageWithSessionInfo(