// 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 #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/parsers/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(121148u, result.data_size); EXPECT_EQ(121358u, result.image_size); } TEST(JpegParserTest, TrailingZerosShouldBeIgnored) { 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("pixel-1280x720-trailing-zeros.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 // SOS fields EXPECT_EQ(121148u, 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