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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 "test/frame_generator.h"
#include <stdio.h>
#include <string.h>
#include <cstdint>
#include <memory>
#include <string>
#include "api/scoped_refptr.h"
#include "api/test/create_frame_generator.h"
#include "api/test/frame_generator_interface.h"
#include "api/video/video_frame_buffer.h"
#include "test/gtest.h"
#include "test/testsupport/file_utils.h"
namespace webrtc {
namespace test {
constexpr int kFrameWidth = 4;
constexpr int kFrameHeight = 4;
constexpr int y_size = kFrameWidth * kFrameHeight;
constexpr int uv_size = ((kFrameHeight + 1) / 2) * ((kFrameWidth + 1) / 2);
class FrameGeneratorTest : public ::testing::Test {
public:
void SetUp() override {
two_frame_yuv_filename_ =
test::TempFilename(test::OutputPath(), "2_frame_yuv_file");
one_frame_yuv_filename_ =
test::TempFilename(test::OutputPath(), "1_frame_yuv_file");
two_frame_nv12_filename_ =
test::TempFilename(test::OutputPath(), "2_frame_nv12_file");
one_frame_nv12_filename_ =
test::TempFilename(test::OutputPath(), "1_frame_nv12_file");
FILE* file = fopen(two_frame_yuv_filename_.c_str(), "wb");
WriteYuvFile(file, 0, 0, 0);
WriteYuvFile(file, 127, 128, 129);
fclose(file);
file = fopen(one_frame_yuv_filename_.c_str(), "wb");
WriteYuvFile(file, 255, 255, 255);
fclose(file);
file = fopen(two_frame_nv12_filename_.c_str(), "wb");
WriteNV12File(file, 0, 0, 0);
WriteNV12File(file, 127, 128, 129);
fclose(file);
file = fopen(one_frame_nv12_filename_.c_str(), "wb");
WriteNV12File(file, 255, 255, 255);
fclose(file);
}
void TearDown() override {
remove(one_frame_yuv_filename_.c_str());
remove(two_frame_yuv_filename_.c_str());
remove(one_frame_nv12_filename_.c_str());
remove(two_frame_nv12_filename_.c_str());
}
protected:
void WriteYuvFile(FILE* file, uint8_t y, uint8_t u, uint8_t v) {
RTC_DCHECK(file);
std::unique_ptr<uint8_t[]> plane_buffer(new uint8_t[y_size]);
memset(plane_buffer.get(), y, y_size);
fwrite(plane_buffer.get(), 1, y_size, file);
memset(plane_buffer.get(), u, uv_size);
fwrite(plane_buffer.get(), 1, uv_size, file);
memset(plane_buffer.get(), v, uv_size);
fwrite(plane_buffer.get(), 1, uv_size, file);
}
void WriteNV12File(FILE* file, uint8_t y, uint8_t u, uint8_t v) {
RTC_DCHECK(file);
uint8_t plane_buffer[y_size];
memset(&plane_buffer, y, y_size);
fwrite(&plane_buffer, 1, y_size, file);
for (size_t i = 0; i < uv_size; ++i) {
plane_buffer[2 * i] = u;
plane_buffer[2 * i + 1] = v;
}
fwrite(&plane_buffer, 1, 2 * uv_size, file);
}
void CheckFrameAndMutate(const FrameGeneratorInterface::VideoFrameData& frame,
uint8_t y,
uint8_t u,
uint8_t v) {
// Check that frame is valid, has the correct color and timestamp are clean.
rtc::scoped_refptr<I420BufferInterface> i420_buffer =
frame.buffer->ToI420();
const uint8_t* buffer;
buffer = i420_buffer->DataY();
for (int i = 0; i < y_size; ++i)
ASSERT_EQ(y, buffer[i]);
buffer = i420_buffer->DataU();
for (int i = 0; i < uv_size; ++i)
ASSERT_EQ(u, buffer[i]);
buffer = i420_buffer->DataV();
for (int i = 0; i < uv_size; ++i)
ASSERT_EQ(v, buffer[i]);
}
uint64_t Hash(const FrameGeneratorInterface::VideoFrameData& frame) {
// Generate a 64-bit hash from the frame's buffer.
uint64_t hash = 19;
rtc::scoped_refptr<I420BufferInterface> i420_buffer =
frame.buffer->ToI420();
const uint8_t* buffer = i420_buffer->DataY();
for (int i = 0; i < y_size; ++i) {
hash = (37 * hash) + buffer[i];
}
buffer = i420_buffer->DataU();
for (int i = 0; i < uv_size; ++i) {
hash = (37 * hash) + buffer[i];
}
buffer = i420_buffer->DataV();
for (int i = 0; i < uv_size; ++i) {
hash = (37 * hash) + buffer[i];
}
return hash;
}
std::string two_frame_yuv_filename_;
std::string one_frame_yuv_filename_;
std::string two_frame_nv12_filename_;
std::string one_frame_nv12_filename_;
};
TEST_F(FrameGeneratorTest, SingleFrameYuvFile) {
std::unique_ptr<FrameGeneratorInterface> generator(
CreateFromYuvFileFrameGenerator(
std::vector<std::string>(1, one_frame_yuv_filename_), kFrameWidth,
kFrameHeight, 1));
CheckFrameAndMutate(generator->NextFrame(), 255, 255, 255);
CheckFrameAndMutate(generator->NextFrame(), 255, 255, 255);
}
TEST_F(FrameGeneratorTest, TwoFrameYuvFile) {
std::unique_ptr<FrameGeneratorInterface> generator(
CreateFromYuvFileFrameGenerator(
std::vector<std::string>(1, two_frame_yuv_filename_), kFrameWidth,
kFrameHeight, 1));
CheckFrameAndMutate(generator->NextFrame(), 0, 0, 0);
CheckFrameAndMutate(generator->NextFrame(), 127, 128, 129);
CheckFrameAndMutate(generator->NextFrame(), 0, 0, 0);
}
TEST_F(FrameGeneratorTest, MultipleFrameYuvFiles) {
std::vector<std::string> files;
files.push_back(two_frame_yuv_filename_);
files.push_back(one_frame_yuv_filename_);
std::unique_ptr<FrameGeneratorInterface> generator(
CreateFromYuvFileFrameGenerator(files, kFrameWidth, kFrameHeight, 1));
CheckFrameAndMutate(generator->NextFrame(), 0, 0, 0);
CheckFrameAndMutate(generator->NextFrame(), 127, 128, 129);
CheckFrameAndMutate(generator->NextFrame(), 255, 255, 255);
CheckFrameAndMutate(generator->NextFrame(), 0, 0, 0);
}
TEST_F(FrameGeneratorTest, TwoFrameYuvFileWithRepeat) {
const int kRepeatCount = 3;
std::unique_ptr<FrameGeneratorInterface> generator(
CreateFromYuvFileFrameGenerator(
std::vector<std::string>(1, two_frame_yuv_filename_), kFrameWidth,
kFrameHeight, kRepeatCount));
for (int i = 0; i < kRepeatCount; ++i)
CheckFrameAndMutate(generator->NextFrame(), 0, 0, 0);
for (int i = 0; i < kRepeatCount; ++i)
CheckFrameAndMutate(generator->NextFrame(), 127, 128, 129);
CheckFrameAndMutate(generator->NextFrame(), 0, 0, 0);
}
TEST_F(FrameGeneratorTest, MultipleFrameYuvFilesWithRepeat) {
const int kRepeatCount = 3;
std::vector<std::string> files;
files.push_back(two_frame_yuv_filename_);
files.push_back(one_frame_yuv_filename_);
std::unique_ptr<FrameGeneratorInterface> generator(
CreateFromYuvFileFrameGenerator(files, kFrameWidth, kFrameHeight,
kRepeatCount));
for (int i = 0; i < kRepeatCount; ++i)
CheckFrameAndMutate(generator->NextFrame(), 0, 0, 0);
for (int i = 0; i < kRepeatCount; ++i)
CheckFrameAndMutate(generator->NextFrame(), 127, 128, 129);
for (int i = 0; i < kRepeatCount; ++i)
CheckFrameAndMutate(generator->NextFrame(), 255, 255, 255);
CheckFrameAndMutate(generator->NextFrame(), 0, 0, 0);
}
TEST_F(FrameGeneratorTest, SingleFrameNV12File) {
std::unique_ptr<FrameGeneratorInterface> generator(
CreateFromNV12FileFrameGenerator(
std::vector<std::string>(1, one_frame_nv12_filename_), kFrameWidth,
kFrameHeight, 1));
CheckFrameAndMutate(generator->NextFrame(), 255, 255, 255);
CheckFrameAndMutate(generator->NextFrame(), 255, 255, 255);
}
TEST_F(FrameGeneratorTest, TwoFrameNV12File) {
std::unique_ptr<FrameGeneratorInterface> generator(
CreateFromNV12FileFrameGenerator(
std::vector<std::string>(1, two_frame_nv12_filename_), kFrameWidth,
kFrameHeight, 1));
CheckFrameAndMutate(generator->NextFrame(), 0, 0, 0);
CheckFrameAndMutate(generator->NextFrame(), 127, 128, 129);
CheckFrameAndMutate(generator->NextFrame(), 0, 0, 0);
}
TEST_F(FrameGeneratorTest, MultipleFrameNV12Files) {
std::vector<std::string> files;
files.push_back(two_frame_nv12_filename_);
files.push_back(one_frame_nv12_filename_);
std::unique_ptr<FrameGeneratorInterface> generator(
CreateFromNV12FileFrameGenerator(files, kFrameWidth, kFrameHeight, 1));
CheckFrameAndMutate(generator->NextFrame(), 0, 0, 0);
CheckFrameAndMutate(generator->NextFrame(), 127, 128, 129);
CheckFrameAndMutate(generator->NextFrame(), 255, 255, 255);
CheckFrameAndMutate(generator->NextFrame(), 0, 0, 0);
}
TEST_F(FrameGeneratorTest, TwoFrameNV12FileWithRepeat) {
const int kRepeatCount = 3;
std::unique_ptr<FrameGeneratorInterface> generator(
CreateFromNV12FileFrameGenerator(
std::vector<std::string>(1, two_frame_nv12_filename_), kFrameWidth,
kFrameHeight, kRepeatCount));
for (int i = 0; i < kRepeatCount; ++i)
CheckFrameAndMutate(generator->NextFrame(), 0, 0, 0);
for (int i = 0; i < kRepeatCount; ++i)
CheckFrameAndMutate(generator->NextFrame(), 127, 128, 129);
CheckFrameAndMutate(generator->NextFrame(), 0, 0, 0);
}
TEST_F(FrameGeneratorTest, MultipleFrameNV12FilesWithRepeat) {
const int kRepeatCount = 3;
std::vector<std::string> files;
files.push_back(two_frame_nv12_filename_);
files.push_back(one_frame_nv12_filename_);
std::unique_ptr<FrameGeneratorInterface> generator(
CreateFromNV12FileFrameGenerator(files, kFrameWidth, kFrameHeight,
kRepeatCount));
for (int i = 0; i < kRepeatCount; ++i)
CheckFrameAndMutate(generator->NextFrame(), 0, 0, 0);
for (int i = 0; i < kRepeatCount; ++i)
CheckFrameAndMutate(generator->NextFrame(), 127, 128, 129);
for (int i = 0; i < kRepeatCount; ++i)
CheckFrameAndMutate(generator->NextFrame(), 255, 255, 255);
CheckFrameAndMutate(generator->NextFrame(), 0, 0, 0);
}
TEST_F(FrameGeneratorTest, SlideGenerator) {
const int kGenCount = 9;
const int kRepeatCount = 3;
std::unique_ptr<FrameGeneratorInterface> generator(
CreateSlideFrameGenerator(kFrameWidth, kFrameHeight, kRepeatCount));
uint64_t hashes[kGenCount];
for (int i = 0; i < kGenCount; ++i) {
hashes[i] = Hash(generator->NextFrame());
}
// Check that the buffer changes only every `kRepeatCount` frames.
for (int i = 1; i < kGenCount; ++i) {
if (i % kRepeatCount == 0) {
EXPECT_NE(hashes[i - 1], hashes[i]);
} else {
EXPECT_EQ(hashes[i - 1], hashes[i]);
}
}
}
} // namespace test
} // namespace webrtc