Enable -Wconversion in BufferStateLayer.

Bug: 129481165
Test: make, atest libsurfaceflinger_unittest
Change-Id: I589add0afb21332a0bc2a4b20f5e8ee8fc85208c
diff --git a/services/surfaceflinger/BufferStateLayer.cpp b/services/surfaceflinger/BufferStateLayer.cpp
index 6253036..9e159fc 100644
--- a/services/surfaceflinger/BufferStateLayer.cpp
+++ b/services/surfaceflinger/BufferStateLayer.cpp
@@ -14,11 +14,6 @@
  * limitations under the License.
  */
 
-// TODO(b/129481165): remove the #pragma below and fix conversion issues
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wconversion"
-#pragma clang diagnostic ignored "-Wextra"
-
 //#define LOG_NDEBUG 0
 #undef LOG_TAG
 #define LOG_TAG "BufferStateLayer"
@@ -597,7 +592,7 @@
     return true;
 }
 
-Rect BufferStateLayer::getBufferSize(const State& s) const {
+Rect BufferStateLayer::getBufferSize(const State& /*s*/) const {
     // for buffer state layers we use the display frame size as the buffer size.
 
     if (mBufferInfo.mBuffer == nullptr) {
@@ -619,7 +614,7 @@
         }
     }
 
-    return Rect(0, 0, bufWidth, bufHeight);
+    return Rect(0, 0, static_cast<int32_t>(bufWidth), static_cast<int32_t>(bufHeight));
 }
 
 FloatRect BufferStateLayer::computeSourceBounds(const FloatRect& parentBounds) const {
@@ -818,7 +813,7 @@
     eraseBufferLocked(clientCacheId);
 }
 
-uint32_t BufferStateLayer::HwcSlotGenerator::getHwcCacheSlot(const client_cache_t& clientCacheId) {
+int BufferStateLayer::HwcSlotGenerator::getHwcCacheSlot(const client_cache_t& clientCacheId) {
     std::lock_guard<std::mutex> lock(mMutex);
     auto itr = mCachedBuffers.find(clientCacheId);
     if (itr == mCachedBuffers.end()) {
@@ -829,7 +824,7 @@
     return hwcCacheSlot;
 }
 
-uint32_t BufferStateLayer::HwcSlotGenerator::addCachedBuffer(const client_cache_t& clientCacheId)
+int BufferStateLayer::HwcSlotGenerator::addCachedBuffer(const client_cache_t& clientCacheId)
         REQUIRES(mMutex) {
     if (!clientCacheId.isValid()) {
         ALOGE("invalid process, returning invalid slot");
@@ -838,17 +833,17 @@
 
     ClientCache::getInstance().registerErasedRecipient(clientCacheId, wp<ErasedRecipient>(this));
 
-    uint32_t hwcCacheSlot = getFreeHwcCacheSlot();
+    int hwcCacheSlot = getFreeHwcCacheSlot();
     mCachedBuffers[clientCacheId] = {hwcCacheSlot, mCounter++};
     return hwcCacheSlot;
 }
 
-uint32_t BufferStateLayer::HwcSlotGenerator::getFreeHwcCacheSlot() REQUIRES(mMutex) {
+int BufferStateLayer::HwcSlotGenerator::getFreeHwcCacheSlot() REQUIRES(mMutex) {
     if (mFreeHwcCacheSlots.empty()) {
         evictLeastRecentlyUsed();
     }
 
-    uint32_t hwcCacheSlot = mFreeHwcCacheSlots.top();
+    int hwcCacheSlot = mFreeHwcCacheSlots.top();
     mFreeHwcCacheSlots.pop();
     return hwcCacheSlot;
 }
@@ -935,8 +930,8 @@
         return false;
     }
 
-    uint32_t bufferWidth = s.buffer->getBuffer()->width;
-    uint32_t bufferHeight = s.buffer->getBuffer()->height;
+    int32_t bufferWidth = s.buffer->getBuffer()->width;
+    int32_t bufferHeight = s.buffer->getBuffer()->height;
 
     // Undo any transformations on the buffer and return the result.
     if (s.bufferTransform & ui::Transform::ROT_90) {
@@ -1011,6 +1006,3 @@
 }
 
 } // namespace android
-
-// TODO(b/129481165): remove the #pragma below and fix conversion issues
-#pragma clang diagnostic pop // ignored "-Wconversion -Wextra"
diff --git a/services/surfaceflinger/BufferStateLayer.h b/services/surfaceflinger/BufferStateLayer.h
index e567478..f4eb78a 100644
--- a/services/surfaceflinger/BufferStateLayer.h
+++ b/services/surfaceflinger/BufferStateLayer.h
@@ -178,19 +178,19 @@
     class HwcSlotGenerator : public ClientCache::ErasedRecipient {
     public:
         HwcSlotGenerator() {
-            for (uint32_t i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
+            for (int i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
                 mFreeHwcCacheSlots.push(i);
             }
         }
 
         void bufferErased(const client_cache_t& clientCacheId);
 
-        uint32_t getHwcCacheSlot(const client_cache_t& clientCacheId);
+        int getHwcCacheSlot(const client_cache_t& clientCacheId);
 
     private:
         friend class SlotGenerationTest;
-        uint32_t addCachedBuffer(const client_cache_t& clientCacheId) REQUIRES(mMutex);
-        uint32_t getFreeHwcCacheSlot() REQUIRES(mMutex);
+        int addCachedBuffer(const client_cache_t& clientCacheId) REQUIRES(mMutex);
+        int getFreeHwcCacheSlot() REQUIRES(mMutex);
         void evictLeastRecentlyUsed() REQUIRES(mMutex);
         void eraseBufferLocked(const client_cache_t& clientCacheId) REQUIRES(mMutex);
 
@@ -202,11 +202,10 @@
 
         std::mutex mMutex;
 
-        std::unordered_map<client_cache_t,
-                           std::pair<uint32_t /*HwcCacheSlot*/, uint32_t /*counter*/>,
+        std::unordered_map<client_cache_t, std::pair<int /*HwcCacheSlot*/, uint64_t /*counter*/>,
                            CachedBufferHash>
                 mCachedBuffers GUARDED_BY(mMutex);
-        std::stack<uint32_t /*HwcCacheSlot*/> mFreeHwcCacheSlots GUARDED_BY(mMutex);
+        std::stack<int /*HwcCacheSlot*/> mFreeHwcCacheSlots GUARDED_BY(mMutex);
 
         // The cache increments this counter value when a slot is updated or used.
         // Used to track the least recently-used buffer
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index b9c31f4..bc5b834 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -6791,7 +6791,7 @@
     return NO_ERROR;
 }
 
-int SurfaceFlinger::getMaxAcquiredBufferCountForCurrentRefreshRate(uid_t uid) const {
+uint32_t SurfaceFlinger::getMaxAcquiredBufferCountForCurrentRefreshRate(uid_t uid) const {
     Fps refreshRate(60.f);
 
     if (const auto frameRateOverride = mScheduler->getFrameRateOverride(uid)) {
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 0ac6438..e335e56 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -942,7 +942,7 @@
         return width > mMaxRenderTargetSize || height > mMaxRenderTargetSize;
     }
 
-    int getMaxAcquiredBufferCountForCurrentRefreshRate(uid_t uid) const;
+    uint32_t getMaxAcquiredBufferCountForCurrentRefreshRate(uid_t uid) const;
 
     /*
      * Display and layer stack management
diff --git a/services/surfaceflinger/tests/unittests/CachingTest.cpp b/services/surfaceflinger/tests/unittests/CachingTest.cpp
index 6a7ec9b..6f85498 100644
--- a/services/surfaceflinger/tests/unittests/CachingTest.cpp
+++ b/services/surfaceflinger/tests/unittests/CachingTest.cpp
@@ -14,11 +14,6 @@
  * limitations under the License.
  */
 
-// TODO(b/129481165): remove the #pragma below and fix conversion issues
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wconversion"
-#pragma clang diagnostic ignored "-Wextra"
-
 #undef LOG_TAG
 #define LOG_TAG "CachingTest"
 
@@ -42,7 +37,7 @@
     sp<IBinder> binder = new BBinder();
     // test getting invalid client_cache_id
     client_cache_t id;
-    uint32_t slot = mHwcSlotGenerator->getHwcCacheSlot(id);
+    int slot = mHwcSlotGenerator->getHwcCacheSlot(id);
     EXPECT_EQ(BufferQueue::INVALID_BUFFER_SLOT, slot);
 }
 
@@ -51,7 +46,7 @@
     client_cache_t id;
     id.token = binder;
     id.id = 0;
-    uint32_t slot = mHwcSlotGenerator->getHwcCacheSlot(id);
+    int slot = mHwcSlotGenerator->getHwcCacheSlot(id);
     EXPECT_EQ(BufferQueue::NUM_BUFFER_SLOTS - 1, slot);
 
     client_cache_t idB;
@@ -72,31 +67,28 @@
     std::vector<client_cache_t> ids;
     uint32_t cacheId = 0;
     // fill up cache
-    for (uint32_t i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
+    for (int i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
         client_cache_t id;
         id.token = binder;
         id.id = cacheId;
         ids.push_back(id);
 
-        uint32_t slot = mHwcSlotGenerator->getHwcCacheSlot(id);
+        int slot = mHwcSlotGenerator->getHwcCacheSlot(id);
         EXPECT_EQ(BufferQueue::NUM_BUFFER_SLOTS - (i + 1), slot);
         cacheId++;
     }
-    for (uint32_t i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
-        uint32_t slot = mHwcSlotGenerator->getHwcCacheSlot(ids[i]);
+    for (int i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
+        int slot = mHwcSlotGenerator->getHwcCacheSlot(ids[static_cast<uint32_t>(i)]);
         EXPECT_EQ(BufferQueue::NUM_BUFFER_SLOTS - (i + 1), slot);
     }
 
-    for (uint32_t i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
+    for (int i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
         client_cache_t id;
         id.token = binder;
         id.id = cacheId;
-        uint32_t slot = mHwcSlotGenerator->getHwcCacheSlot(id);
+        int slot = mHwcSlotGenerator->getHwcCacheSlot(id);
         EXPECT_EQ(BufferQueue::NUM_BUFFER_SLOTS - (i + 1), slot);
         cacheId++;
     }
 }
 } // namespace android
-
-// TODO(b/129481165): remove the #pragma below and fix conversion issues
-#pragma clang diagnostic pop // ignored "-Wconversion -Wextra"