diff --git a/libs/gui/BufferQueueProducer.cpp b/libs/gui/BufferQueueProducer.cpp
index bf9c84d..13b864d 100644
--- a/libs/gui/BufferQueueProducer.cpp
+++ b/libs/gui/BufferQueueProducer.cpp
@@ -250,7 +250,7 @@
 
 status_t BufferQueueProducer::dequeueBuffer(int *outSlot,
         sp<android::Fence> *outFence, bool async,
-        uint32_t width, uint32_t height, uint32_t format, uint32_t usage) {
+        uint32_t width, uint32_t height, PixelFormat format, uint32_t usage) {
     ATRACE_CALL();
     { // Autolock scope
         Mutex::Autolock lock(mCore->mMutex);
@@ -311,7 +311,7 @@
         if ((buffer == NULL) ||
                 (static_cast<uint32_t>(buffer->width) != width) ||
                 (static_cast<uint32_t>(buffer->height) != height) ||
-                (static_cast<uint32_t>(buffer->format) != format) ||
+                (buffer->format != format) ||
                 ((static_cast<uint32_t>(buffer->usage) & usage) != usage))
         {
             mSlots[found].mAcquireCalled = false;
@@ -341,7 +341,7 @@
         status_t error;
         BQ_LOGV("dequeueBuffer: allocating a new buffer for slot %d", *outSlot);
         sp<GraphicBuffer> graphicBuffer(mCore->mAllocator->createGraphicBuffer(
-                    width, height, format, usage, &error));
+                width, height, format, usage, &error));
         if (graphicBuffer == NULL) {
             BQ_LOGE("dequeueBuffer: createGraphicBuffer failed");
             return error;
@@ -582,8 +582,8 @@
         BQ_LOGV("queueBuffer: slot=%d/%" PRIu64 " time=%" PRIu64
                 " crop=[%d,%d,%d,%d] transform=%#x scale=%s",
                 slot, mCore->mFrameCounter + 1, timestamp,
-                crop.left, crop.top, crop.right, crop.bottom,
-                transform, BufferItem::scalingModeName(scalingMode));
+                crop.left, crop.top, crop.right, crop.bottom, transform,
+                BufferItem::scalingModeName(static_cast<uint32_t>(scalingMode)));
 
         const sp<GraphicBuffer>& graphicBuffer(mSlots[slot].mGraphicBuffer);
         Rect bufferRect(graphicBuffer->getWidth(), graphicBuffer->getHeight());
@@ -603,10 +603,11 @@
         item.mAcquireCalled = mSlots[slot].mAcquireCalled;
         item.mGraphicBuffer = mSlots[slot].mGraphicBuffer;
         item.mCrop = crop;
-        item.mTransform = transform & ~NATIVE_WINDOW_TRANSFORM_INVERSE_DISPLAY;
+        item.mTransform = transform &
+                ~static_cast<uint32_t>(NATIVE_WINDOW_TRANSFORM_INVERSE_DISPLAY);
         item.mTransformToDisplayInverse =
-                bool(transform & NATIVE_WINDOW_TRANSFORM_INVERSE_DISPLAY);
-        item.mScalingMode = scalingMode;
+                (transform & NATIVE_WINDOW_TRANSFORM_INVERSE_DISPLAY) != 0;
+        item.mScalingMode = static_cast<uint32_t>(scalingMode);
         item.mTimestamp = timestamp;
         item.mIsAutoTimestamp = isAutoTimestamp;
         item.mFrameNumber = mCore->mFrameCounter;
@@ -647,7 +648,8 @@
         mCore->mDequeueCondition.broadcast();
 
         output->inflate(mCore->mDefaultWidth, mCore->mDefaultHeight,
-                mCore->mTransformHint, mCore->mQueue.size());
+                mCore->mTransformHint,
+                static_cast<uint32_t>(mCore->mQueue.size()));
 
         ATRACE_INT(mCore->mConsumerName.string(), mCore->mQueue.size());
 
@@ -736,25 +738,25 @@
     int value;
     switch (what) {
         case NATIVE_WINDOW_WIDTH:
-            value = mCore->mDefaultWidth;
+            value = static_cast<int32_t>(mCore->mDefaultWidth);
             break;
         case NATIVE_WINDOW_HEIGHT:
-            value = mCore->mDefaultHeight;
+            value = static_cast<int32_t>(mCore->mDefaultHeight);
             break;
         case NATIVE_WINDOW_FORMAT:
-            value = mCore->mDefaultBufferFormat;
+            value = static_cast<int32_t>(mCore->mDefaultBufferFormat);
             break;
         case NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS:
             value = mCore->getMinUndequeuedBufferCountLocked(false);
             break;
         case NATIVE_WINDOW_STICKY_TRANSFORM:
-            value = static_cast<int>(mStickyTransform);
+            value = static_cast<int32_t>(mStickyTransform);
             break;
         case NATIVE_WINDOW_CONSUMER_RUNNING_BEHIND:
             value = (mCore->mQueue.size() > 1);
             break;
         case NATIVE_WINDOW_CONSUMER_USAGE_BITS:
-            value = mCore->mConsumerUsageBits;
+            value = static_cast<int32_t>(mCore->mConsumerUsageBits);
             break;
         default:
             return BAD_VALUE;
@@ -802,7 +804,8 @@
         case NATIVE_WINDOW_API_CAMERA:
             mCore->mConnectedApi = api;
             output->inflate(mCore->mDefaultWidth, mCore->mDefaultHeight,
-                    mCore->mTransformHint, mCore->mQueue.size());
+                    mCore->mTransformHint,
+                    static_cast<uint32_t>(mCore->mQueue.size()));
 
             // Set up a death notification so that we can disconnect
             // automatically if the remote producer dies
@@ -904,14 +907,14 @@
 }
 
 void BufferQueueProducer::allocateBuffers(bool async, uint32_t width,
-        uint32_t height, uint32_t format, uint32_t usage) {
+        uint32_t height, PixelFormat format, uint32_t usage) {
     ATRACE_CALL();
     while (true) {
         Vector<int> freeSlots;
         size_t newBufferCount = 0;
         uint32_t allocWidth = 0;
         uint32_t allocHeight = 0;
-        uint32_t allocFormat = 0;
+        PixelFormat allocFormat = PIXEL_FORMAT_UNKNOWN;
         uint32_t allocUsage = 0;
         { // Autolock scope
             Mutex::Autolock lock(mCore->mMutex);
@@ -937,7 +940,8 @@
                     currentBufferCount, maxBufferCount);
             if (maxBufferCount <= currentBufferCount)
                 return;
-            newBufferCount = maxBufferCount - currentBufferCount;
+            newBufferCount =
+                    static_cast<size_t>(maxBufferCount - currentBufferCount);
             if (freeSlots.size() < newBufferCount) {
                 BQ_LOGE("allocateBuffers: ran out of free slots");
                 return;
@@ -950,7 +954,7 @@
             mCore->mIsAllocating = true;
         } // Autolock scope
 
-        Vector<sp<GraphicBuffer> > buffers;
+        Vector<sp<GraphicBuffer>> buffers;
         for (size_t i = 0; i <  newBufferCount; ++i) {
             status_t result = NO_ERROR;
             sp<GraphicBuffer> graphicBuffer(mCore->mAllocator->createGraphicBuffer(
@@ -970,7 +974,8 @@
             Mutex::Autolock lock(mCore->mMutex);
             uint32_t checkWidth = width > 0 ? width : mCore->mDefaultWidth;
             uint32_t checkHeight = height > 0 ? height : mCore->mDefaultHeight;
-            uint32_t checkFormat = format != 0 ? format : mCore->mDefaultBufferFormat;
+            PixelFormat checkFormat = format != 0 ?
+                    format : mCore->mDefaultBufferFormat;
             uint32_t checkUsage = usage | mCore->mConsumerUsageBits;
             if (checkWidth != allocWidth || checkHeight != allocHeight ||
                 checkFormat != allocFormat || checkUsage != allocUsage) {