libui: add support for android.hardware.graphics
Add Gralloc2::Allocator and Gralloc2::Mapper as wrappers to
android.hardware.graphics.allocator@2.0 and
android.hardware.graphics.mapper@2.0 respectively. Prefer
Gralloc2::{Allocator,Mapper} in
GraphicBufferAllocator/GraphicBufferMapper.
The new path has these differences
- it does not support gralloc0
- it does not dup-and-close fence fds to and from HAL
(not sure why we did that)
- release implies native_handle_close and native_handle_delete
(same as in gralloc1?)
When all interesting targets have android.hardware.graphics
implementations, the old path will be removed. That is why the new path
is added in the least intrusive way, as in:
if (new-path-valid) {
new-path;
} else {
old-path;
}
despite the ugliness.
Test: booted to launcher, tested with YouTube and some games
Change-Id: Idabb6c62e73c96a59736b497c6d6d1366095e7e3
diff --git a/libs/ui/GrallocMapper.cpp b/libs/ui/GrallocMapper.cpp
new file mode 100644
index 0000000..d568b68
--- /dev/null
+++ b/libs/ui/GrallocMapper.cpp
@@ -0,0 +1,118 @@
+/*
+ * Copyright 2016 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.
+ */
+
+#define LOG_TAG "GrallocMapper"
+
+#include <array>
+#include <string>
+
+#include <log/log.h>
+#include <ui/GrallocMapper.h>
+
+namespace android {
+
+namespace Gralloc2 {
+
+typedef const void*(*FetchInterface)(const char* name);
+
+static FetchInterface loadHalLib(const char* pkg_name)
+{
+ static const std::array<const char*, 3> sSearchDirs = {{
+ HAL_LIBRARY_PATH_ODM,
+ HAL_LIBRARY_PATH_VENDOR,
+ HAL_LIBRARY_PATH_SYSTEM,
+ }};
+ static const char sSymbolName[] = "HALLIB_FETCH_Interface";
+
+ void* handle = nullptr;
+ std::string path;
+ for (auto dir : sSearchDirs) {
+ path = dir;
+ path += pkg_name;
+ path += ".hallib.so";
+ handle = dlopen(path.c_str(), RTLD_LOCAL | RTLD_NOW);
+ if (handle) {
+ break;
+ }
+ }
+ if (!handle) {
+ return nullptr;
+ }
+
+ void* symbol = dlsym(handle, sSymbolName);
+ if (!symbol) {
+ ALOGE("%s is missing from %s", sSymbolName, path.c_str());
+ dlclose(handle);
+ return nullptr;
+ }
+
+ return reinterpret_cast<FetchInterface>(symbol);
+}
+
+Mapper::Mapper()
+ : mMapper(nullptr), mDevice(nullptr)
+{
+ static const char sHalLibName[] = "android.hardware.graphics.mapper";
+ static const char sSupportedInterface[] =
+ "android.hardware.graphics.mapper@2.0::IMapper";
+
+ FetchInterface fetchInterface = loadHalLib(sHalLibName);
+ if (!fetchInterface) {
+ return;
+ }
+
+ mMapper = static_cast<const IMapper*>(
+ fetchInterface(sSupportedInterface));
+ if (!mMapper) {
+ ALOGE("%s is not supported", sSupportedInterface);
+ return;
+ }
+
+ if (mMapper->createDevice(&mDevice) != Error::NONE) {
+ ALOGE("failed to create mapper device");
+ mMapper = nullptr;
+ }
+}
+
+Mapper::~Mapper()
+{
+ if (mMapper) {
+ mMapper->destroyDevice(mDevice);
+ }
+}
+
+void Mapper::release(buffer_handle_t handle) const
+{
+ auto error = mMapper->release(mDevice, handle);
+ ALOGE_IF(error != Error::NONE,
+ "release(%p) failed with %d", handle, error);
+}
+
+int Mapper::unlock(buffer_handle_t handle) const
+{
+ int releaseFence;
+ auto error = mMapper->unlock(mDevice, handle, &releaseFence);
+ if (error != Error::NONE) {
+ ALOGE("unlock(%p) failed with %d", handle, error);
+ releaseFence = -1;
+ }
+
+ return releaseFence;
+}
+
+} // namespace Gralloc2
+
+} // namespace android