Add MIX_ROUTE_FLAG_LOOP_BACK_RENDER

Test: adb shell audiorecorder --target /data/file.raw
Bug: 111453086
Change-Id: I276a10921aac9f5e709c0a44c661cbbdc94e49db
Signed-off-by: Kevin Rocard <krocard@google.com>

media/libaudioclient/include/media/AudioPolicy.h

@@ -49,8 +49,12 @@ namespace android {
 #define MIX_STATE_IDLE 0
 #define MIX_STATE_MIXING 1
 
+/** Control to which device some audio is rendered */
 #define MIX_ROUTE_FLAG_RENDER 0x1
+/** Loop back some audio instead of rendering it */
 #define MIX_ROUTE_FLAG_LOOP_BACK (0x1 << 1)
+/** Loop back some audio while it is rendered */
+#define MIX_ROUTE_FLAG_LOOP_BACK_AND_RENDER (MIX_ROUTE_FLAG_RENDER | MIX_ROUTE_FLAG_LOOP_BACK)
 #define MIX_ROUTE_FLAG_ALL (MIX_ROUTE_FLAG_RENDER | MIX_ROUTE_FLAG_LOOP_BACK)
 
 #define MAX_MIXES_PER_POLICY 10
@@ -119,6 +123,11 @@ public:
 #define RECORD_CONFIG_EVENT_START 1
 #define RECORD_CONFIG_EVENT_STOP  0
 
+static inline bool is_mix_loopback_render(uint32_t routeFlags) {
+    return (routeFlags & MIX_ROUTE_FLAG_LOOP_BACK_AND_RENDER)
+           == MIX_ROUTE_FLAG_LOOP_BACK_AND_RENDER;
+}
+
 }; // namespace android
 
 #endif  // ANDROID_AUDIO_POLICY_H

services/audiopolicy/common/managerdefinitions/src/TypeConverter.cpp

@@ -45,6 +45,7 @@ template <>
 const RouteFlagTypeConverter::Table RouteFlagTypeConverter::mTable[] = {
     MAKE_STRING_FROM_ENUM(MIX_ROUTE_FLAG_RENDER),
     MAKE_STRING_FROM_ENUM(MIX_ROUTE_FLAG_LOOP_BACK),
+    MAKE_STRING_FROM_ENUM(MIX_ROUTE_FLAG_LOOP_BACK_AND_RENDER),
     MAKE_STRING_FROM_ENUM(MIX_ROUTE_FLAG_ALL),
     TERMINATOR
 };