Reapply "Add local impl of mapper for libhidlmemory"
This reverts commit 5410c8c04a03527289f69df063cfe9ea30349d2c.
Test: atest CtsMediaAudioTestCases
Tets: remove android.hidl.memory@1.0-impl.so from device &&
atest CtsMediaAudioTestCases && check for call_once log
Bug: 205764958
Bug: 310700278
Bug: 310680652
Change-Id: Iebaf64882949d5923362f80e79eeed8f8fece7bb
diff --git a/libhidlmemory/AshmemMemory.h b/libhidlmemory/AshmemMemory.h
new file mode 100644
index 0000000..ffb9c00
--- /dev/null
+++ b/libhidlmemory/AshmemMemory.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2023 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.
+ */
+#pragma once
+
+#include <android/hidl/memory/1.0/IMemory.h>
+#include <hidl/Status.h>
+#include <inttypes.h>
+#include <log/log.h>
+#include <sys/mman.h>
+
+namespace android {
+namespace hardware {
+namespace impl {
+
+using ::android::sp;
+using ::android::hardware::hidl_memory;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hidl::memory::V1_0::IMemory;
+
+struct AshmemMemory : public IMemory {
+ AshmemMemory(const hidl_memory& memory, void* data) : mMemory(memory), mData(data) {}
+
+ ~AshmemMemory() { munmap(mData, mMemory.size()); }
+
+ // Methods from ::android::hidl::memory::V1_0::IMemory follow.
+ Return<void*> getPointer() override { return mData; }
+ Return<uint64_t> getSize() override { return mMemory.size(); }
+ // NOOPs (since non0remoted memory)
+ Return<void> update() override { return Void(); }
+ Return<void> updateRange(uint64_t /*start*/, uint64_t /*length*/) override { return Void(); }
+ Return<void> read() override { return Void(); }
+ Return<void> readRange(uint64_t /*start*/, uint64_t /*length*/) override { return Void(); }
+ Return<void> commit() override { return Void(); }
+
+ private:
+ // Holding onto hidl_memory reference because it contains
+ // handle and size, and handle will also be required for
+ // the remoted case.
+ hidl_memory mMemory;
+
+ // Mapped memory in process.
+ void* mData;
+};
+
+} // namespace impl
+} // namespace hardware
+} // namespace android