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120 lines
4.1 KiB
120 lines
4.1 KiB
/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <gtest/gtest.h>
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#include "binder/MemoryBase.h"
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#include "binder/MemoryHeapBase.h"
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#include "cutils/ashmem.h"
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#include "media/ShmemCompat.h"
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#include "media/ShmemUtil.h"
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namespace android {
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namespace media {
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namespace {
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// Creates a SharedFileRegion instance.
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SharedFileRegion makeSharedFileRegion(int64_t offset, int64_t size) {
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SharedFileRegion shmem;
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shmem.offset = offset;
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shmem.size = size;
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int fd = ashmem_create_region("", size + offset);
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assert(fd >= 0);
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shmem.fd = os::ParcelFileDescriptor(base::unique_fd(fd));
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return shmem;
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}
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// Creates a SharedFileRegion instance with an invalid FD.
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SharedFileRegion makeInvalidSharedFileRegion(int64_t offset, int64_t size) {
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SharedFileRegion shmem;
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shmem.offset = offset;
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shmem.size = size;
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return shmem;
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}
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sp<IMemory> makeIMemory(const std::vector<uint8_t>& content, bool writeable = true) {
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constexpr size_t kOffset = 19;
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sp<MemoryHeapBase> heap = new MemoryHeapBase(content.size(),
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!writeable ? IMemoryHeap::READ_ONLY : 0);
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sp<IMemory> result = sp<MemoryBase>::make(heap, kOffset, content.size());
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memcpy(result->unsecurePointer(), content.data(), content.size());
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return result;
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}
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TEST(ShmemTest, Validate) {
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EXPECT_TRUE(validateSharedFileRegion(makeSharedFileRegion(0, 0)));
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EXPECT_TRUE(validateSharedFileRegion(makeSharedFileRegion(1, 2)));
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EXPECT_FALSE(validateSharedFileRegion(makeSharedFileRegion(-1, 2)));
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EXPECT_FALSE(validateSharedFileRegion(makeSharedFileRegion(2, -1)));
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EXPECT_FALSE(validateSharedFileRegion(makeInvalidSharedFileRegion(1, 2)));
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}
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TEST(ShmemTest, Conversion) {
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sp<IMemory> reconstructed;
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{
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SharedFileRegion shmem;
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sp<IMemory> imem = makeIMemory({6, 5, 3});
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ASSERT_TRUE(convertIMemoryToSharedFileRegion(imem, &shmem));
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ASSERT_EQ(3, shmem.size);
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ASSERT_GE(shmem.fd.get(), 0);
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ASSERT_TRUE(shmem.writeable);
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ASSERT_TRUE(convertSharedFileRegionToIMemory(shmem, &reconstructed));
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}
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ASSERT_EQ(3, reconstructed->size());
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ASSERT_EQ(reconstructed->getMemory()->getFlags() & IMemoryHeap::READ_ONLY, 0);
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const uint8_t* p =
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reinterpret_cast<const uint8_t*>(reconstructed->unsecurePointer());
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EXPECT_EQ(6, p[0]);
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EXPECT_EQ(5, p[1]);
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EXPECT_EQ(3, p[2]);
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}
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TEST(ShmemTest, ConversionReadOnly) {
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sp<IMemory> reconstructed;
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{
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SharedFileRegion shmem;
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sp<IMemory> imem = makeIMemory({6, 5, 3}, false);
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ASSERT_TRUE(convertIMemoryToSharedFileRegion(imem, &shmem));
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ASSERT_EQ(3, shmem.size);
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ASSERT_GE(shmem.fd.get(), 0);
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ASSERT_FALSE(shmem.writeable);
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ASSERT_TRUE(convertSharedFileRegionToIMemory(shmem, &reconstructed));
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}
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ASSERT_EQ(3, reconstructed->size());
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ASSERT_NE(reconstructed->getMemory()->getFlags() & IMemoryHeap::READ_ONLY, 0);
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const uint8_t* p =
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reinterpret_cast<const uint8_t*>(reconstructed->unsecurePointer());
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EXPECT_EQ(6, p[0]);
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EXPECT_EQ(5, p[1]);
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EXPECT_EQ(3, p[2]);
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}
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TEST(ShmemTest, NullConversion) {
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sp<IMemory> reconstructed;
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{
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std::optional<SharedFileRegion> shmem;
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sp<IMemory> imem;
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ASSERT_TRUE(convertNullableIMemoryToSharedFileRegion(imem, &shmem));
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ASSERT_FALSE(shmem.has_value());
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ASSERT_TRUE(convertNullableSharedFileRegionToIMemory(shmem, &reconstructed));
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}
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ASSERT_EQ(nullptr, reconstructed);
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}
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} // namespace
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} // namespace media
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} // namespace android
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