diff --git a/include/media/stagefright/ACodec.h b/include/media/stagefright/ACodec.h
index 34bae29..df25d7b 100644
--- a/include/media/stagefright/ACodec.h
+++ b/include/media/stagefright/ACodec.h
@@ -278,7 +278,7 @@
     void deferMessage(const sp<AMessage> &msg);
     void processDeferredMessages();
 
-    void sendFormatChange();
+    void sendFormatChange(const sp<AMessage> &reply);
 
     void signalError(
             OMX_ERRORTYPE error = OMX_ErrorUndefined,
diff --git a/media/libstagefright/ACodec.cpp b/media/libstagefright/ACodec.cpp
index 64e3885..cf41cf2 100644
--- a/media/libstagefright/ACodec.cpp
+++ b/media/libstagefright/ACodec.cpp
@@ -2229,7 +2229,7 @@
     }
 }
 
-void ACodec::sendFormatChange() {
+void ACodec::sendFormatChange(const sp<AMessage> &reply) {
     sp<AMessage> notify = mNotify->dup();
     notify->setInt32("what", kWhatOutputFormatChanged);
 
@@ -2294,14 +2294,12 @@
                         rect.nTop + rect.nHeight - 1);
 
                 if (mNativeWindow != NULL) {
-                    android_native_rect_t crop;
-                    crop.left = rect.nLeft;
-                    crop.top = rect.nTop;
-                    crop.right = rect.nLeft + rect.nWidth;
-                    crop.bottom = rect.nTop + rect.nHeight;
-
-                    CHECK_EQ(0, native_window_set_crop(
-                                mNativeWindow.get(), &crop));
+                    reply->setRect(
+                            "crop",
+                            rect.nLeft,
+                            rect.nTop,
+                            rect.nLeft + rect.nWidth,
+                            rect.nTop + rect.nHeight);
                 }
             }
             break;
@@ -3057,8 +3055,11 @@
                 break;
             }
 
+            sp<AMessage> reply =
+                new AMessage(kWhatOutputBufferDrained, mCodec->id());
+
             if (!mCodec->mSentFormat) {
-                mCodec->sendFormatChange();
+                mCodec->sendFormatChange(reply);
             }
 
             info->mData->setRange(rangeOffset, rangeLength);
@@ -3081,9 +3082,6 @@
             notify->setBuffer("buffer", info->mData);
             notify->setInt32("flags", flags);
 
-            sp<AMessage> reply =
-                new AMessage(kWhatOutputBufferDrained, mCodec->id());
-
             reply->setPointer("buffer-id", info->mBufferID);
 
             notify->setMessage("reply", reply);
@@ -3127,6 +3125,13 @@
         mCodec->findBufferByID(kPortIndexOutput, bufferID, &index);
     CHECK_EQ((int)info->mStatus, (int)BufferInfo::OWNED_BY_DOWNSTREAM);
 
+    android_native_rect_t crop;
+    if (msg->findRect("crop",
+            &crop.left, &crop.top, &crop.right, &crop.bottom)) {
+        CHECK_EQ(0, native_window_set_crop(
+                mCodec->mNativeWindow.get(), &crop));
+    }
+
     int32_t render;
     if (mCodec->mNativeWindow != NULL
             && msg->findInt32("render", &render) && render != 0
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index 6422b23..97f66f4 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -1330,13 +1330,11 @@
         track->mResetDone = false;
         track->mPresentationCompleteFrames = 0;
         mActiveTracks.add(track);
-        if (track->mainBuffer() != mMixBuffer) {
-            sp<EffectChain> chain = getEffectChain_l(track->sessionId());
-            if (chain != 0) {
-                ALOGV("addTrack_l() starting track on chain %p for session %d", chain.get(),
-                        track->sessionId());
-                chain->incActiveTrackCnt();
-            }
+        sp<EffectChain> chain = getEffectChain_l(track->sessionId());
+        if (chain != 0) {
+            ALOGV("addTrack_l() starting track on chain %p for session %d", chain.get(),
+                    track->sessionId());
+            chain->incActiveTrackCnt();
         }
 
         status = NO_ERROR;