Assert that PIXEL_FORMAT_R_8 == AIDL version

I4846327b29736ee811672801a683deb287342a8e added PIXEL_FORMAT_R_8 to
match the AIDL version, but due to tricky dependencies, it hardcoded the
constant, rather than referring to it directly. Add a static assert in
a new file verifying that they match.

Bug: 154720547
Bug: 209497983
Bug: 193170859
Test: make
Change-Id: I43fd2bc53eba8c9decc64fc9563c625f56c71798

1 files changed, 24 insertions, 0 deletions

diff --git a/libs/ui/StaticAsserts.cpp b/libs/ui/StaticAsserts.cpp
new file mode 100644
index 0000000000..85da64f10e
--- /dev/null
+++ b/libs/ui/StaticAsserts.cpp
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <ui/PixelFormat.h>
+#include <aidl/android/hardware/graphics/common/PixelFormat.h>
+
+// Ideally, PIXEL_FORMAT_R_8 would simply be defined to match the aidl PixelFormat, but
+// PixelFormat.h (where PIXEL_FORMAT_R_8 is defined) is pulled in by builds for
+// which there is no aidl build (e.g. Windows).
+static_assert(android::PIXEL_FORMAT_R_8 ==static_cast<int32_t>(
+                                  aidl::android::hardware::graphics::common::PixelFormat::R_8));