diff --git a/media/libmedia/AudioRecord.cpp b/media/libmedia/AudioRecord.cpp
index 9a87023..b172747 100644
--- a/media/libmedia/AudioRecord.cpp
+++ b/media/libmedia/AudioRecord.cpp
@@ -891,6 +891,9 @@
             if (read > 0) {
                 break;
             }
+            if (err == TIMED_OUT || err == -EINTR) {
+                err = WOULD_BLOCK;
+            }
             return ssize_t(err);
         }
 
diff --git a/media/libmedia/AudioTrack.cpp b/media/libmedia/AudioTrack.cpp
index fad8350..68a47a3 100644
--- a/media/libmedia/AudioTrack.cpp
+++ b/media/libmedia/AudioTrack.cpp
@@ -1739,6 +1739,9 @@
             if (written > 0) {
                 break;
             }
+            if (err == TIMED_OUT || err == -EINTR) {
+                err = WOULD_BLOCK;
+            }
             return ssize_t(err);
         }
 
diff --git a/media/libmedia/ToneGenerator.cpp b/media/libmedia/ToneGenerator.cpp
index f352d5b..ffe896e 100644
--- a/media/libmedia/ToneGenerator.cpp
+++ b/media/libmedia/ToneGenerator.cpp
@@ -1063,47 +1063,37 @@
 //
 ////////////////////////////////////////////////////////////////////////////////
 bool ToneGenerator::initAudioTrack() {
-
-    // Open audio track in mono, PCM 16bit, default sampling rate, default buffer size
+    // Open audio track in mono, PCM 16bit, default sampling rate.
     mpAudioTrack = new AudioTrack();
-    ALOGV("Create Track: %p", mpAudioTrack.get());
+    ALOGV("AudioTrack(%p) created", mpAudioTrack.get());
 
-    mpAudioTrack->set(mStreamType,
-                      0,    // sampleRate
-                      AUDIO_FORMAT_PCM_16_BIT,
-                      AUDIO_CHANNEL_OUT_MONO,
-                      0,    // frameCount
-                      AUDIO_OUTPUT_FLAG_FAST,
-                      audioCallback,
-                      this, // user
-                      0,    // notificationFrames
-                      0,    // sharedBuffer
-                      mThreadCanCallJava,
-                      AUDIO_SESSION_ALLOCATE,
-                      AudioTrack::TRANSFER_CALLBACK);
+    const size_t frameCount = mProcessSize;
+    status_t status = mpAudioTrack->set(
+            mStreamType,
+            0,    // sampleRate
+            AUDIO_FORMAT_PCM_16_BIT,
+            AUDIO_CHANNEL_OUT_MONO,
+            frameCount,
+            AUDIO_OUTPUT_FLAG_FAST,
+            audioCallback,
+            this, // user
+            0,    // notificationFrames
+            0,    // sharedBuffer
+            mThreadCanCallJava,
+            AUDIO_SESSION_ALLOCATE,
+            AudioTrack::TRANSFER_CALLBACK);
 
-    if (mpAudioTrack->initCheck() != NO_ERROR) {
-        ALOGE("AudioTrack->initCheck failed");
-        goto initAudioTrack_exit;
+    if (status != NO_ERROR) {
+        ALOGE("AudioTrack(%p) set failed with error %d", mpAudioTrack.get(), status);
+        mpAudioTrack.clear();
+        return false;
     }
 
     mpAudioTrack->setVolume(mVolume);
-
     mState = TONE_INIT;
-
     return true;
-
-initAudioTrack_exit:
-
-    ALOGV("Init failed: %p", mpAudioTrack.get());
-
-    // Cleanup
-    mpAudioTrack.clear();
-
-    return false;
 }
 
-
 ////////////////////////////////////////////////////////////////////////////////
 //
 //    Method:        ToneGenerator::audioCallback()
diff --git a/media/libstagefright/codecs/mpeg2dec/SoftMPEG2.cpp b/media/libstagefright/codecs/mpeg2dec/SoftMPEG2.cpp
index 5210683..5ed037a 100644
--- a/media/libstagefright/codecs/mpeg2dec/SoftMPEG2.cpp
+++ b/media/libstagefright/codecs/mpeg2dec/SoftMPEG2.cpp
@@ -460,6 +460,47 @@
     resetPlugin();
 }
 
+bool SoftMPEG2::getSeqInfo() {
+    IV_API_CALL_STATUS_T status;
+    impeg2d_ctl_get_seq_info_ip_t s_ctl_get_seq_info_ip;
+    impeg2d_ctl_get_seq_info_op_t s_ctl_get_seq_info_op;
+
+    s_ctl_get_seq_info_ip.e_cmd = IVD_CMD_VIDEO_CTL;
+    s_ctl_get_seq_info_ip.e_sub_cmd =
+        (IVD_CONTROL_API_COMMAND_TYPE_T)IMPEG2D_CMD_CTL_GET_SEQ_INFO;
+
+    s_ctl_get_seq_info_ip.u4_size = sizeof(impeg2d_ctl_get_seq_info_ip_t);
+    s_ctl_get_seq_info_op.u4_size = sizeof(impeg2d_ctl_get_seq_info_op_t);
+
+    status = ivdec_api_function(
+            (iv_obj_t *)mCodecCtx, (void *)&s_ctl_get_seq_info_ip,
+            (void *)&s_ctl_get_seq_info_op);
+
+    if (status != IV_SUCCESS) {
+        ALOGW("Error in getting Sequence info: 0x%x",
+                s_ctl_get_seq_info_op.u4_error_code);
+        return false;
+    }
+
+
+    int32_t primaries = s_ctl_get_seq_info_op.u1_colour_primaries;
+    int32_t transfer = s_ctl_get_seq_info_op.u1_transfer_characteristics;
+    int32_t coeffs = s_ctl_get_seq_info_op.u1_matrix_coefficients;
+    bool fullRange = false;  // mpeg2 video has limited range.
+
+    ColorAspects colorAspects;
+    ColorUtils::convertIsoColorAspectsToCodecAspects(
+            primaries, transfer, coeffs, fullRange, colorAspects);
+
+    // Update color aspects if necessary.
+    if (colorAspectsDiffer(colorAspects, mBitstreamColorAspects)) {
+        mBitstreamColorAspects = colorAspects;
+        status_t err = handleColorAspectsChange();
+        CHECK(err == OK);
+    }
+    return true;
+}
+
 OMX_ERRORTYPE SoftMPEG2::internalSetParameter(OMX_INDEXTYPE index, const OMX_PTR params) {
     const uint32_t oldWidth = mWidth;
     const uint32_t oldHeight = mHeight;
@@ -650,6 +691,8 @@
             bool unsupportedDimensions = (IMPEG2D_UNSUPPORTED_DIMENSIONS == s_dec_op.u4_error_code);
             bool resChanged = (IVD_RES_CHANGED == (s_dec_op.u4_error_code & 0xFF));
 
+            getSeqInfo();
+
             GETTIME(&mTimeEnd, NULL);
             /* Compute time taken for decode() */
             TIME_DIFF(mTimeStart, mTimeEnd, timeTaken);
@@ -705,6 +748,8 @@
                 continue;
             }
 
+            // Combine the resolution change and coloraspects change in one PortSettingChange event
+            // if necessary.
             if ((0 < s_dec_op.u4_pic_wd) && (0 < s_dec_op.u4_pic_ht)) {
                 uint32_t width = s_dec_op.u4_pic_wd;
                 uint32_t height = s_dec_op.u4_pic_ht;
@@ -715,6 +760,11 @@
                     resetDecoder();
                     return;
                 }
+            } else if (mUpdateColorAspects) {
+                notify(OMX_EventPortSettingsChanged, kOutputPortIndex,
+                    kDescribeColorAspectsIndex, NULL);
+                mUpdateColorAspects = false;
+                return;
             }
 
             if (s_dec_op.u4_output_present) {
@@ -783,6 +833,10 @@
     }
 }
 
+int SoftMPEG2::getColorAspectPreference() {
+    return kPreferBitstream;
+}
+
 }  // namespace android
 
 android::SoftOMXComponent *createSoftOMXComponent(
diff --git a/media/libstagefright/codecs/mpeg2dec/SoftMPEG2.h b/media/libstagefright/codecs/mpeg2dec/SoftMPEG2.h
index 025e9a0..700ef5f 100644
--- a/media/libstagefright/codecs/mpeg2dec/SoftMPEG2.h
+++ b/media/libstagefright/codecs/mpeg2dec/SoftMPEG2.h
@@ -63,6 +63,7 @@
     virtual void onQueueFilled(OMX_U32 portIndex);
     virtual void onPortFlushCompleted(OMX_U32 portIndex);
     virtual void onReset();
+    virtual int getColorAspectPreference();
     virtual OMX_ERRORTYPE internalSetParameter(OMX_INDEXTYPE index, const OMX_PTR params);
 private:
     // Number of input and output buffers
@@ -125,6 +126,8 @@
             OMX_BUFFERHEADERTYPE *outHeader,
             size_t timeStampIx);
 
+    bool getSeqInfo();
+
     DISALLOW_EVIL_CONSTRUCTORS(SoftMPEG2);
 };
 
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
index 51066fd..c0bb4e7 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
@@ -1167,8 +1167,10 @@
         beaconMuteLatency = handleEventForBeacon(STARTING_OUTPUT);
     }
 
+    // force device change if the output is inactive and no audio patch is already present.
     // check active before incrementing usage count
-    bool force = !outputDesc->isActive();
+    bool force = !outputDesc->isActive() &&
+            (outputDesc->getPatchHandle() == AUDIO_PATCH_HANDLE_NONE);
 
     // increment usage count for this stream on the requested output:
     // NOTE that the usage count is the same for duplicated output and hardware output which is
@@ -1188,12 +1190,17 @@
         for (size_t i = 0; i < mOutputs.size(); i++) {
             sp<AudioOutputDescriptor> desc = mOutputs.valueAt(i);
             if (desc != outputDesc) {
-                // force a device change if any other output is managed by the same hw
-                // module and has a current device selection that differs from selected device.
+                // force a device change if any other output is:
+                // - managed by the same hw module
+                // - has a current device selection that differs from selected device.
+                // - supports currently selected device
+                // - has an active audio patch
                 // In this case, the audio HAL must receive the new device selection so that it can
                 // change the device currently selected by the other active output.
                 if (outputDesc->sharesHwModuleWith(desc) &&
-                    desc->device() != device) {
+                        desc->device() != device &&
+                        desc->supportedDevices() & device &&
+                        desc->getPatchHandle() != AUDIO_PATCH_HANDLE_NONE) {
                     force = true;
                 }
                 // wait for audio on other active outputs to be presented when starting