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/*
* Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "common_video/include/i420_buffer_pool.h"
#include <stdint.h>
#include <string.h>
#include "api/scoped_refptr.h"
#include "api/video/i420_buffer.h"
#include "api/video/video_frame_buffer.h"
#include "test/gtest.h"
namespace webrtc {
TEST(TestI420BufferPool, SimpleFrameReuse) {
I420BufferPool pool;
auto buffer = pool.CreateBuffer(16, 16);
EXPECT_EQ(16, buffer->width());
EXPECT_EQ(16, buffer->height());
// Extract non-refcounted pointers for testing.
const uint8_t* y_ptr = buffer->DataY();
const uint8_t* u_ptr = buffer->DataU();
const uint8_t* v_ptr = buffer->DataV();
// Release buffer so that it is returned to the pool.
buffer = nullptr;
// Check that the memory is resued.
buffer = pool.CreateBuffer(16, 16);
EXPECT_EQ(y_ptr, buffer->DataY());
EXPECT_EQ(u_ptr, buffer->DataU());
EXPECT_EQ(v_ptr, buffer->DataV());
}
TEST(TestI420BufferPool, FrameReuseWithDefaultThenExplicitStride) {
I420BufferPool pool;
auto buffer = pool.CreateBuffer(15, 16);
EXPECT_EQ(15, buffer->width());
EXPECT_EQ(16, buffer->height());
// The default Y stride is width and UV stride is halfwidth (rounded up).
ASSERT_EQ(15, buffer->StrideY());
ASSERT_EQ(8, buffer->StrideU());
ASSERT_EQ(8, buffer->StrideV());
// Extract non-refcounted pointers for testing.
const uint8_t* y_ptr = buffer->DataY();
const uint8_t* u_ptr = buffer->DataU();
const uint8_t* v_ptr = buffer->DataV();
// Release buffer so that it is returned to the pool.
buffer = nullptr;
// Check that the memory is resued with explicit strides if they match the
// assumed default above.
buffer = pool.CreateBuffer(15, 16, 15, 8, 8);
EXPECT_EQ(y_ptr, buffer->DataY());
EXPECT_EQ(u_ptr, buffer->DataU());
EXPECT_EQ(v_ptr, buffer->DataV());
EXPECT_EQ(15, buffer->width());
EXPECT_EQ(16, buffer->height());
EXPECT_EQ(15, buffer->StrideY());
EXPECT_EQ(8, buffer->StrideU());
EXPECT_EQ(8, buffer->StrideV());
}
TEST(TestI420BufferPool, FailToReuseWrongSize) {
// Set max frames to 1, just to make sure the first buffer is being released.
I420BufferPool pool(/*zero_initialize=*/false, 1);
auto buffer = pool.CreateBuffer(16, 16);
EXPECT_EQ(16, buffer->width());
EXPECT_EQ(16, buffer->height());
// Release buffer so that it is returned to the pool.
buffer = nullptr;
// Check that the pool doesn't try to reuse buffers of incorrect size.
buffer = pool.CreateBuffer(32, 16);
ASSERT_TRUE(buffer);
EXPECT_EQ(32, buffer->width());
EXPECT_EQ(16, buffer->height());
}
TEST(TestI420BufferPool, FailToReuseWrongStride) {
// Set max frames to 1, just to make sure the first buffer is being released.
I420BufferPool pool(/*zero_initialize=*/false, 1);
auto buffer = pool.CreateBuffer(32, 32, 32, 16, 16);
// Make sure the stride was read correctly, for the rest of the test.
ASSERT_EQ(16, buffer->StrideU());
ASSERT_EQ(16, buffer->StrideV());
buffer = pool.CreateBuffer(32, 32, 32, 20, 20);
ASSERT_TRUE(buffer);
EXPECT_EQ(32, buffer->StrideY());
EXPECT_EQ(20, buffer->StrideU());
EXPECT_EQ(20, buffer->StrideV());
}
TEST(TestI420BufferPool, FrameValidAfterPoolDestruction) {
rtc::scoped_refptr<I420Buffer> buffer;
{
I420BufferPool pool;
buffer = pool.CreateBuffer(16, 16);
}
EXPECT_EQ(16, buffer->width());
EXPECT_EQ(16, buffer->height());
// Try to trigger use-after-free errors by writing to y-plane.
memset(buffer->MutableDataY(), 0xA5, 16 * buffer->StrideY());
}
TEST(TestI420BufferPool, MaxNumberOfBuffers) {
I420BufferPool pool(false, 1);
auto buffer1 = pool.CreateBuffer(16, 16);
EXPECT_NE(nullptr, buffer1.get());
EXPECT_EQ(nullptr, pool.CreateBuffer(16, 16).get());
}
} // namespace webrtc
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