codec2: vts-video: align input buffer size for decoders

Hardware decoders expect minimum PAGE_SIZE alignment.

Test:
   VtsHalMediaC2V1_0TargetVideoDecTest -C c2.qti.hevc.decoder -P /sdcard/res/ -I default

Bug: 135427312

Change-Id: I14ee2f93d644450679500d507e775ad16afead6d

media/codec2/hidl/1.0/vts/functional/video/VtsHalMediaC2V1_0TargetVideoDecTest.cpp

@@ -46,6 +46,10 @@ class LinearBuffer : public C2Buffer {
     explicit LinearBuffer(const std::shared_ptr<C2LinearBlock>& block)
         : C2Buffer(
               {block->share(block->offset(), block->size(), ::C2Fence())}) {}
+
+    explicit LinearBuffer(const std::shared_ptr<C2LinearBlock>& block, size_t size)
+        : C2Buffer(
+              {block->share(block->offset(), size, ::C2Fence())}) {}
 };
 
 static ComponentTestEnvironment* gEnv = nullptr;
@@ -371,11 +375,12 @@ void decodeNFrames(const std::shared_ptr<android::Codec2Client::Component>& comp
         ASSERT_EQ(eleStream.gcount(), size);
 
         work->input.buffers.clear();
+        auto alignedSize = ALIGN(size, PAGE_SIZE);
         if (size) {
             std::shared_ptr<C2LinearBlock> block;
             ASSERT_EQ(C2_OK,
                     linearPool->fetchLinearBlock(
-                        size, {C2MemoryUsage::CPU_READ, C2MemoryUsage::CPU_WRITE},
+                        alignedSize, {C2MemoryUsage::CPU_READ, C2MemoryUsage::CPU_WRITE},
                         &block));
             ASSERT_TRUE(block);
 
@@ -385,13 +390,13 @@ void decodeNFrames(const std::shared_ptr<android::Codec2Client::Component>& comp
                 fprintf(stderr, "C2LinearBlock::map() failed : %d", view.error());
                 break;
             }
-            ASSERT_EQ((size_t)size, view.capacity());
+            ASSERT_EQ((size_t)alignedSize, view.capacity());
             ASSERT_EQ(0u, view.offset());
-            ASSERT_EQ((size_t)size, view.size());
+            ASSERT_EQ((size_t)alignedSize, view.size());
 
             memcpy(view.base(), data, size);
 
-            work->input.buffers.emplace_back(new LinearBuffer(block));
+            work->input.buffers.emplace_back(new LinearBuffer(block, size));
             free(data);
         }
         work->worklets.clear();

media/codec2/hidl/1.0/vts/functional/video/media_c2_video_hidl_test_common.h

@@ -23,6 +23,8 @@
 #define ENC_DEFAULT_FRAME_HEIGHT 288
 #define MAX_ITERATIONS 128
 
+#define ALIGN(_sz, _align) ((_sz + (_align - 1)) & ~(_align - 1))
+
 /*
  * Common video utils
  */