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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stdint.h>
#include "base/at_exit.h"
#include "base/files/memory_mapped_file.h"
#include "base/path_service.h"
#include "media/base/test_data_util.h"
#include "media/filters/jpeg_parser.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace media {
TEST(JpegParserTest, Parsing) {
base::FilePath data_dir;
ASSERT_TRUE(base::PathService::Get(base::DIR_SOURCE_ROOT, &data_dir));
// This sample frame is captured from Chromebook Pixel
base::FilePath file_path = data_dir.AppendASCII("media")
.AppendASCII("test")
.AppendASCII("data")
.AppendASCII("pixel-1280x720.jpg");
base::MemoryMappedFile stream;
ASSERT_TRUE(stream.Initialize(file_path))
<< "Couldn't open stream file: " << file_path.MaybeAsASCII();
JpegParseResult result;
ASSERT_TRUE(ParseJpegPicture(stream.data(), stream.length(), &result));
// Verify selected fields
// SOF fields
EXPECT_EQ(1280, result.frame_header.visible_width);
EXPECT_EQ(720, result.frame_header.visible_height);
EXPECT_EQ(1280, result.frame_header.coded_width);
EXPECT_EQ(720, result.frame_header.coded_height);
EXPECT_EQ(3, result.frame_header.num_components);
EXPECT_EQ(1, result.frame_header.components[0].id);
EXPECT_EQ(2, result.frame_header.components[0].horizontal_sampling_factor);
EXPECT_EQ(1, result.frame_header.components[0].vertical_sampling_factor);
EXPECT_EQ(0, result.frame_header.components[0].quantization_table_selector);
EXPECT_EQ(2, result.frame_header.components[1].id);
EXPECT_EQ(1, result.frame_header.components[1].horizontal_sampling_factor);
EXPECT_EQ(1, result.frame_header.components[1].vertical_sampling_factor);
EXPECT_EQ(1, result.frame_header.components[1].quantization_table_selector);
EXPECT_EQ(3, result.frame_header.components[2].id);
EXPECT_EQ(1, result.frame_header.components[2].horizontal_sampling_factor);
EXPECT_EQ(1, result.frame_header.components[2].vertical_sampling_factor);
EXPECT_EQ(1, result.frame_header.components[2].quantization_table_selector);
// DRI fields
EXPECT_EQ(0, result.restart_interval);
// DQT fields
EXPECT_TRUE(result.q_table[0].valid);
EXPECT_TRUE(result.q_table[1].valid);
EXPECT_FALSE(result.q_table[2].valid);
EXPECT_FALSE(result.q_table[3].valid);
// DHT fields (no DHT marker)
EXPECT_FALSE(result.dc_table[0].valid);
EXPECT_FALSE(result.ac_table[0].valid);
EXPECT_FALSE(result.dc_table[1].valid);
EXPECT_FALSE(result.ac_table[1].valid);
// SOS fields
EXPECT_EQ(3, result.scan.num_components);
EXPECT_EQ(1, result.scan.components[0].component_selector);
EXPECT_EQ(0, result.scan.components[0].dc_selector);
EXPECT_EQ(0, result.scan.components[0].ac_selector);
EXPECT_EQ(2, result.scan.components[1].component_selector);
EXPECT_EQ(1, result.scan.components[1].dc_selector);
EXPECT_EQ(1, result.scan.components[1].ac_selector);
EXPECT_EQ(3, result.scan.components[2].component_selector);
EXPECT_EQ(1, result.scan.components[2].dc_selector);
EXPECT_EQ(1, result.scan.components[2].ac_selector);
EXPECT_EQ(121150u, result.data_size);
EXPECT_EQ(121358u, result.image_size);
}
TEST(JpegParserTest, CodedSizeNotEqualVisibleSize) {
base::FilePath data_dir;
ASSERT_TRUE(base::PathService::Get(base::DIR_SOURCE_ROOT, &data_dir));
base::FilePath file_path = data_dir.AppendASCII("media")
.AppendASCII("test")
.AppendASCII("data")
.AppendASCII("blank-1x1.jpg");
base::MemoryMappedFile stream;
ASSERT_TRUE(stream.Initialize(file_path))
<< "Couldn't open stream file: " << file_path.MaybeAsASCII();
JpegParseResult result;
ASSERT_TRUE(ParseJpegPicture(stream.data(), stream.length(), &result));
EXPECT_EQ(1, result.frame_header.visible_width);
EXPECT_EQ(1, result.frame_header.visible_height);
// The sampling factor of the given image is 2:2, so coded size is 16x16
EXPECT_EQ(16, result.frame_header.coded_width);
EXPECT_EQ(16, result.frame_header.coded_height);
EXPECT_EQ(2, result.frame_header.components[0].horizontal_sampling_factor);
EXPECT_EQ(2, result.frame_header.components[0].vertical_sampling_factor);
}
TEST(JpegParserTest, ParsingFail) {
const uint8_t data[] = {0, 1, 2, 3}; // not jpeg
JpegParseResult result;
ASSERT_FALSE(ParseJpegPicture(data, sizeof(data), &result));
}
} // namespace media
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