diff --git a/media/libstagefright/omx/OMXNodeInstance.cpp b/media/libstagefright/omx/OMXNodeInstance.cpp
index 015a148..4f38dee 100644
--- a/media/libstagefright/omx/OMXNodeInstance.cpp
+++ b/media/libstagefright/omx/OMXNodeInstance.cpp
@@ -686,6 +686,7 @@
 
     CLOG_CONFIG(setPortMode, "%s(%d), port %d", asString(mode), mode, portIndex);
 
+    status_t err = OK;
     switch (mode) {
     case IOMX::kPortModeDynamicANWBuffer:
     {
@@ -694,17 +695,19 @@
                 CLOG_INTERNAL(setPortMode, "Legacy adaptive experiment: "
                         "not setting port mode to %s(%d) on output",
                         asString(mode), mode);
-                return StatusFromOMXError(OMX_ErrorUnsupportedIndex);
+                err = StatusFromOMXError(OMX_ErrorUnsupportedIndex);
+                break;
             }
 
-            status_t err = enableNativeBuffers_l(
+            err = enableNativeBuffers_l(
                     portIndex, OMX_TRUE /*graphic*/, OMX_TRUE);
             if (err != OK) {
-                return err;
+                break;
             }
         }
         (void)enableNativeBuffers_l(portIndex, OMX_FALSE /*graphic*/, OMX_FALSE);
-        return storeMetaDataInBuffers_l(portIndex, OMX_TRUE, NULL);
+        err = storeMetaDataInBuffers_l(portIndex, OMX_TRUE, NULL);
+        break;
     }
 
     case IOMX::kPortModeDynamicNativeHandle:
@@ -712,13 +715,15 @@
         if (portIndex != kPortIndexInput) {
             CLOG_ERROR(setPortMode, BAD_VALUE,
                     "%s(%d) mode is only supported on input port", asString(mode), mode);
-            return BAD_VALUE;
+            err = BAD_VALUE;
+            break;
         }
         (void)enableNativeBuffers_l(portIndex, OMX_TRUE /*graphic*/, OMX_FALSE);
         (void)enableNativeBuffers_l(portIndex, OMX_FALSE /*graphic*/, OMX_FALSE);
 
         MetadataBufferType metaType = kMetadataBufferTypeNativeHandleSource;
-        return storeMetaDataInBuffers_l(portIndex, OMX_TRUE, &metaType);
+        err = storeMetaDataInBuffers_l(portIndex, OMX_TRUE, &metaType);
+        break;
     }
 
     case IOMX::kPortModePresetSecureBuffer:
@@ -726,7 +731,8 @@
         // Allow on both input and output.
         (void)storeMetaDataInBuffers_l(portIndex, OMX_FALSE, NULL);
         (void)enableNativeBuffers_l(portIndex, OMX_TRUE /*graphic*/, OMX_FALSE);
-        return enableNativeBuffers_l(portIndex, OMX_FALSE /*graphic*/, OMX_TRUE);
+        err = enableNativeBuffers_l(portIndex, OMX_FALSE /*graphic*/, OMX_TRUE);
+        break;
     }
 
     case IOMX::kPortModePresetANWBuffer:
@@ -734,7 +740,8 @@
         if (portIndex != kPortIndexOutput) {
             CLOG_ERROR(setPortMode, BAD_VALUE,
                     "%s(%d) mode is only supported on output port", asString(mode), mode);
-            return BAD_VALUE;
+            err = BAD_VALUE;
+            break;
         }
 
         // Check if we're simulating legacy mode with metadata mode,
@@ -743,7 +750,7 @@
             if (storeMetaDataInBuffers_l(portIndex, OMX_TRUE, NULL) == OK) {
                 CLOG_INTERNAL(setPortMode, "Legacy adaptive experiment: "
                         "metdata mode enabled successfully");
-                return OK;
+                break;
             }
 
             CLOG_INTERNAL(setPortMode, "Legacy adaptive experiment: "
@@ -754,15 +761,15 @@
 
         // Disable secure buffer and enable graphic buffer
         (void)enableNativeBuffers_l(portIndex, OMX_FALSE /*graphic*/, OMX_FALSE);
-        status_t err = enableNativeBuffers_l(portIndex, OMX_TRUE /*graphic*/, OMX_TRUE);
+        err = enableNativeBuffers_l(portIndex, OMX_TRUE /*graphic*/, OMX_TRUE);
         if (err != OK) {
-            return err;
+            break;
         }
 
         // Not running experiment, or metadata is not supported.
         // Disable metadata mode and use legacy mode.
         (void)storeMetaDataInBuffers_l(portIndex, OMX_FALSE, NULL);
-        return OK;
+        break;
     }
 
     case IOMX::kPortModePresetByteBuffer:
@@ -771,15 +778,19 @@
         (void)enableNativeBuffers_l(portIndex, OMX_TRUE /*graphic*/, OMX_FALSE);
         (void)enableNativeBuffers_l(portIndex, OMX_FALSE /*graphic*/, OMX_FALSE);
         (void)storeMetaDataInBuffers_l(portIndex, OMX_FALSE, NULL);
-        return OK;
-    }
-
-    default:
         break;
     }
 
-    CLOG_ERROR(setPortMode, BAD_VALUE, "invalid port mode %d", mode);
-    return BAD_VALUE;
+    default:
+        CLOG_ERROR(setPortMode, BAD_VALUE, "invalid port mode %d", mode);
+        err = BAD_VALUE;
+        break;
+    }
+
+    if (err == OK) {
+        mPortMode[portIndex] = mode;
+    }
+    return err;
 }
 
 status_t OMXNodeInstance::enableNativeBuffers_l(
@@ -1057,28 +1068,48 @@
     }
 
     switch (omxBuffer.mBufferType) {
-        case OMXBuffer::kBufferTypePreset:
+        case OMXBuffer::kBufferTypePreset: {
+            if (mPortMode[portIndex] != IOMX::kPortModeDynamicANWBuffer
+                    && mPortMode[portIndex] != IOMX::kPortModeDynamicNativeHandle) {
+                break;
+            }
             return useBuffer_l(portIndex, NULL, NULL, buffer);
+        }
 
-        case OMXBuffer::kBufferTypeSharedMem:
+        case OMXBuffer::kBufferTypeSharedMem: {
+            if (mPortMode[portIndex] != IOMX::kPortModePresetByteBuffer) {
+                break;
+            }
             return useBuffer_l(portIndex, omxBuffer.mMem, NULL, buffer);
+        }
 
-        case OMXBuffer::kBufferTypeANWBuffer:
+        case OMXBuffer::kBufferTypeANWBuffer: {
+            if (mPortMode[portIndex] != IOMX::kPortModePresetANWBuffer) {
+                break;
+            }
             return useGraphicBuffer_l(portIndex, omxBuffer.mGraphicBuffer, buffer);
+        }
 
         case OMXBuffer::kBufferTypeHidlMemory: {
+                if (mPortMode[portIndex] != IOMX::kPortModePresetByteBuffer
+                        && mPortMode[portIndex] != IOMX::kPortModeDynamicANWBuffer) {
+                    break;
+                }
                 sp<IHidlMemory> hidlMemory = mapMemory(omxBuffer.mHidlMemory);
                 if (hidlMemory == nullptr) {
                     ALOGE("OMXNodeInstance useBuffer() failed to map memory");
                     return NO_MEMORY;
                 }
                 return useBuffer_l(portIndex, NULL, hidlMemory, buffer);
-            }
+        }
         default:
+            return BAD_VALUE;
             break;
     }
 
-    return BAD_VALUE;
+    ALOGE("b/77486542");
+    android_errorWriteLog(0x534e4554, "77486542");
+    return INVALID_OPERATION;
 }
 
 status_t OMXNodeInstance::useBuffer_l(
@@ -1514,6 +1545,11 @@
         android_errorWriteLog(0x534e4554, "35467458");
         return BAD_VALUE;
     }
+    if (mPortMode[portIndex] != IOMX::kPortModePresetSecureBuffer) {
+        ALOGE("b/77486542");
+        android_errorWriteLog(0x534e4554, "77486542");
+        return INVALID_OPERATION;
+    }
     BufferMeta *buffer_meta = new BufferMeta(portIndex);
 
     OMX_BUFFERHEADERTYPE *header;