Added support for auxiliary audio effects to AudioTrack and MediaPlayer.

Added methods to AudioTrack and MediaPlayer java classes to enable use of
auxiliary audio effects. The effect can be attached and detached by specifying its
ID and the send level controlled.

Change-Id: Ie74ff54a453096a742688476f612ce355543b6f3

1 files changed, 30 insertions, 0 deletions

diff --git a/media/libmedia/IMediaPlayer.cpp b/media/libmedia/IMediaPlayer.cpp
index ed792b3..0f55b19 100644
--- a/media/libmedia/IMediaPlayer.cpp
+++ b/media/libmedia/IMediaPlayer.cpp
@@ -45,6 +45,8 @@ enum {
     GET_METADATA,
     SUSPEND,
     RESUME,
+    SET_AUX_EFFECT_SEND_LEVEL,
+    ATTACH_AUX_EFFECT
 };
 
 class BpMediaPlayer: public BpInterface<IMediaPlayer>
@@ -221,6 +223,24 @@ public:
 
         return reply.readInt32();
     }
+
+    status_t setAuxEffectSendLevel(float level)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IMediaPlayer::getInterfaceDescriptor());
+        data.writeFloat(level);
+        remote()->transact(SET_AUX_EFFECT_SEND_LEVEL, data, &reply);
+        return reply.readInt32();
+    }
+
+    status_t attachAuxEffect(int effectId)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IMediaPlayer::getInterfaceDescriptor());
+        data.writeInt32(effectId);
+        remote()->transact(ATTACH_AUX_EFFECT, data, &reply);
+        return reply.readInt32();
+    }
 };
 
 IMPLEMENT_META_INTERFACE(MediaPlayer, "android.media.IMediaPlayer");
@@ -339,6 +359,16 @@ status_t BnMediaPlayer::onTransact(
             reply->setDataPosition(0);
             return NO_ERROR;
         } break;
+        case SET_AUX_EFFECT_SEND_LEVEL: {
+            CHECK_INTERFACE(IMediaPlayer, data, reply);
+            reply->writeInt32(setAuxEffectSendLevel(data.readFloat()));
+            return NO_ERROR;
+        } break;
+        case ATTACH_AUX_EFFECT: {
+            CHECK_INTERFACE(IMediaPlayer, data, reply);
+            reply->writeInt32(attachAuxEffect(data.readInt32()));
+            return NO_ERROR;
+        } break;
         default:
             return BBinder::onTransact(code, data, reply, flags);
     }