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// Copyright 2021 The libgav1 Authors
//
// 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 "src/residual_buffer_pool.h"
#include <cstdint>
#include <memory>
#include <utility>
#include "gtest/gtest.h"
#include "src/utils/constants.h"
#include "src/utils/queue.h"
#include "src/utils/types.h"
namespace libgav1 {
namespace {
TEST(ResidualBufferTest, TestUsage) {
ResidualBufferPool pool(true, 1, 1, sizeof(int16_t));
EXPECT_EQ(pool.Size(), 0);
// Get one buffer.
std::unique_ptr<ResidualBuffer> buffer1 = pool.Get();
uint8_t* const buffer1_ptr = buffer1->buffer();
ASSERT_NE(buffer1_ptr, nullptr);
// Get another buffer (while holding on to the first one).
std::unique_ptr<ResidualBuffer> buffer2 = pool.Get();
uint8_t* const buffer2_ptr = buffer2->buffer();
ASSERT_NE(buffer2_ptr, nullptr);
EXPECT_NE(buffer1_ptr, buffer2_ptr);
// Return the second buffer.
pool.Release(std::move(buffer2));
EXPECT_EQ(pool.Size(), 1);
// Get another buffer (this one should be the same as the buffer2).
std::unique_ptr<ResidualBuffer> buffer3 = pool.Get();
uint8_t* const buffer3_ptr = buffer3->buffer();
ASSERT_NE(buffer3_ptr, nullptr);
EXPECT_EQ(buffer3_ptr, buffer2_ptr);
EXPECT_EQ(pool.Size(), 0);
// Get another buffer (this one will be a new buffer).
std::unique_ptr<ResidualBuffer> buffer4 = pool.Get();
uint8_t* const buffer4_ptr = buffer4->buffer();
ASSERT_NE(buffer4_ptr, nullptr);
EXPECT_NE(buffer4_ptr, buffer1_ptr);
EXPECT_NE(buffer4_ptr, buffer3_ptr);
EXPECT_EQ(pool.Size(), 0);
// Return all the buffers.
pool.Release(std::move(buffer1));
EXPECT_EQ(pool.Size(), 1);
pool.Release(std::move(buffer3));
EXPECT_EQ(pool.Size(), 2);
pool.Release(std::move(buffer4));
EXPECT_EQ(pool.Size(), 3);
// Reset the buffer with same parameters.
pool.Reset(true, 1, 1, sizeof(int16_t));
EXPECT_EQ(pool.Size(), 3);
// Reset the buffer size with different parameters.
pool.Reset(true, 0, 1, sizeof(int32_t));
// The existing buffers should now have been invalidated.
EXPECT_EQ(pool.Size(), 0);
// Get and return a buffer.
std::unique_ptr<ResidualBuffer> buffer5 = pool.Get();
uint8_t* const buffer5_ptr = buffer5->buffer();
ASSERT_NE(buffer5_ptr, nullptr);
pool.Release(std::move(buffer5));
EXPECT_EQ(pool.Size(), 1);
// Reset the buffer with different value for use128x128_superblock.
pool.Reset(false, 0, 1, sizeof(int32_t));
// The existing buffers should now have been invalidated.
EXPECT_EQ(pool.Size(), 0);
}
TEST(ResidualBufferTest, TestQueue) {
ResidualBufferPool pool(true, 1, 1, sizeof(int16_t));
EXPECT_EQ(pool.Size(), 0);
// Get one buffer.
std::unique_ptr<ResidualBuffer> buffer1 = pool.Get();
uint8_t* const buffer1_ptr = buffer1->buffer();
ASSERT_NE(buffer1_ptr, nullptr);
auto* queue1 = buffer1->transform_parameters();
queue1->Push(TransformParameters(kTransformTypeAdstAdst, 10));
EXPECT_EQ(queue1->Size(), 1);
EXPECT_EQ(queue1->Front().type, kTransformTypeAdstAdst);
EXPECT_EQ(queue1->Front().non_zero_coeff_count, 10);
queue1->Push(TransformParameters(kTransformTypeDctDct, 20));
EXPECT_EQ(queue1->Size(), 2);
EXPECT_EQ(queue1->Front().type, kTransformTypeAdstAdst);
EXPECT_EQ(queue1->Front().non_zero_coeff_count, 10);
queue1->Pop();
EXPECT_EQ(queue1->Size(), 1);
EXPECT_EQ(queue1->Front().type, kTransformTypeDctDct);
EXPECT_EQ(queue1->Front().non_zero_coeff_count, 20);
// Return the buffer.
pool.Release(std::move(buffer1));
EXPECT_EQ(pool.Size(), 1);
// Get another buffer (should be the same as buffer1).
std::unique_ptr<ResidualBuffer> buffer2 = pool.Get();
uint8_t* const buffer2_ptr = buffer2->buffer();
ASSERT_NE(buffer2_ptr, nullptr);
EXPECT_EQ(buffer1_ptr, buffer2_ptr);
// Releasing the buffer should've cleared the queue.
EXPECT_EQ(buffer2->transform_parameters()->Size(), 0);
}
TEST(ResidualBufferTest, TestStackPushPop) {
ResidualBufferStack buffers;
EXPECT_EQ(buffers.Size(), 0);
EXPECT_EQ(buffers.Pop(), nullptr);
std::unique_ptr<ResidualBuffer> buffer0 = ResidualBuffer::Create(128, 128);
ResidualBuffer* const buffer0_ptr = buffer0.get();
EXPECT_NE(buffer0_ptr, nullptr);
std::unique_ptr<ResidualBuffer> buffer1 = ResidualBuffer::Create(128, 128);
ResidualBuffer* const buffer1_ptr = buffer1.get();
EXPECT_NE(buffer1_ptr, nullptr);
std::unique_ptr<ResidualBuffer> buffer2 = ResidualBuffer::Create(128, 128);
ResidualBuffer* const buffer2_ptr = buffer2.get();
EXPECT_NE(buffer2_ptr, nullptr);
// Push two buffers onto the stack.
buffers.Push(std::move(buffer0));
EXPECT_EQ(buffers.Size(), 1);
buffers.Push(std::move(buffer1));
EXPECT_EQ(buffers.Size(), 2);
// Pop one buffer off the stack.
std::unique_ptr<ResidualBuffer> top = buffers.Pop();
EXPECT_EQ(buffers.Size(), 1);
EXPECT_EQ(top.get(), buffer1_ptr);
// Push one buffer onto the stack.
buffers.Push(std::move(buffer2));
EXPECT_EQ(buffers.Size(), 2);
// Pop two buffers off the stack
top = buffers.Pop();
EXPECT_EQ(buffers.Size(), 1);
EXPECT_EQ(top.get(), buffer2_ptr);
top = buffers.Pop();
EXPECT_EQ(buffers.Size(), 0);
EXPECT_EQ(top.get(), buffer0_ptr);
// Try to pop a buffer off an empty stack.
top = buffers.Pop();
EXPECT_EQ(buffers.Size(), 0);
EXPECT_EQ(top, nullptr);
}
TEST(ResidualBufferTest, TestStackSwap) {
ResidualBufferStack buffers;
EXPECT_EQ(buffers.Size(), 0);
EXPECT_EQ(buffers.Pop(), nullptr);
std::unique_ptr<ResidualBuffer> buffer0 = ResidualBuffer::Create(128, 128);
ResidualBuffer* const buffer0_ptr = buffer0.get();
EXPECT_NE(buffer0_ptr, nullptr);
std::unique_ptr<ResidualBuffer> buffer1 = ResidualBuffer::Create(128, 128);
ResidualBuffer* const buffer1_ptr = buffer1.get();
EXPECT_NE(buffer1_ptr, nullptr);
std::unique_ptr<ResidualBuffer> buffer2 = ResidualBuffer::Create(128, 128);
ResidualBuffer* const buffer2_ptr = buffer2.get();
EXPECT_NE(buffer2_ptr, nullptr);
// Push three buffers onto the stack.
buffers.Push(std::move(buffer0));
EXPECT_EQ(buffers.Size(), 1);
buffers.Push(std::move(buffer1));
EXPECT_EQ(buffers.Size(), 2);
buffers.Push(std::move(buffer2));
EXPECT_EQ(buffers.Size(), 3);
// Swap the contents of the stacks.
ResidualBufferStack swapped;
swapped.Swap(&buffers);
EXPECT_EQ(buffers.Size(), 0);
EXPECT_EQ(swapped.Size(), 3);
// Pop three buffers off the swapped stack.
std::unique_ptr<ResidualBuffer> top = swapped.Pop();
EXPECT_EQ(swapped.Size(), 2);
EXPECT_EQ(top.get(), buffer2_ptr);
top = swapped.Pop();
EXPECT_EQ(swapped.Size(), 1);
EXPECT_EQ(top.get(), buffer1_ptr);
top = swapped.Pop();
EXPECT_EQ(swapped.Size(), 0);
EXPECT_EQ(top.get(), buffer0_ptr);
}
} // namespace
} // namespace libgav1
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