| // Copyright (c) 2021, Alliance for Open Media. All rights reserved |
| // |
| // This source code is subject to the terms of the BSD 2 Clause License and |
| // the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License |
| // was not distributed with this source code in the LICENSE file, you can |
| // obtain it at www.aomedia.org/license/software. If the Alliance for Open |
| // Media Patent License 1.0 was not distributed with this source code in the |
| // PATENTS file, you can obtain it at www.aomedia.org/license/patent. |
| |
| #include "avifinfo.h" |
| |
| #include <algorithm> |
| #include <fstream> |
| #include <vector> |
| |
| #include "gtest/gtest.h" |
| |
| namespace { |
| |
| using Data = std::vector<uint8_t>; |
| |
| Data LoadFile(const char file_name[]) { |
| std::ifstream file(file_name, std::ios::binary | std::ios::ate); |
| if (!file) return Data(); |
| const auto file_size = file.tellg(); |
| Data bytes(file_size * sizeof(char)); |
| file.seekg(0); // Rewind. |
| return file.read(reinterpret_cast<char*>(bytes.data()), file_size) ? bytes |
| : Data(); |
| } |
| |
| //------------------------------------------------------------------------------ |
| // Positive tests |
| |
| TEST(AvifInfoGetTest, WithoutFileSize) { |
| const Data input = LoadFile("avifinfo_test_1x1.avif"); |
| ASSERT_FALSE(input.empty()); |
| |
| AvifInfoFeatures features; |
| EXPECT_EQ(AvifInfoGet(input.data(), input.size(), &features), kAvifInfoOk); |
| EXPECT_EQ(features.width, 1u); |
| EXPECT_EQ(features.height, 1u); |
| EXPECT_EQ(features.bit_depth, 8u); |
| EXPECT_EQ(features.num_channels, 3u); |
| } |
| |
| TEST(AvifInfoGetTest, NoPixi10b) { |
| // Same as above but "meta" box size is stored as 64 bits, "av1C" has |
| // 'high_bitdepth' set to true, "pixi" was renamed to "pixy" and "mdat" size |
| // is 0 (extends to the end of the file). |
| const Data input = |
| LoadFile("avifinfo_test_1x1_10b_nopixi_metasize64b_mdatsize0.avif"); |
| ASSERT_FALSE(input.empty()); |
| |
| AvifInfoFeatures features; |
| EXPECT_EQ(AvifInfoGet(input.data(), input.size(), &features), kAvifInfoOk); |
| EXPECT_EQ(features.width, 1u); |
| EXPECT_EQ(features.height, 1u); |
| EXPECT_EQ(features.bit_depth, 10u); |
| EXPECT_EQ(features.num_channels, 3u); |
| } |
| |
| TEST(AvifInfoGetTest, WithFileSize) { |
| const Data input = LoadFile("avifinfo_test_1x1.avif"); |
| ASSERT_FALSE(input.empty()); |
| |
| AvifInfoFeatures features; |
| EXPECT_EQ(AvifInfoGetWithSize(input.data(), /*data_size=*/input.size(), |
| &features, /*file_size=*/input.size()), |
| kAvifInfoOk); |
| EXPECT_EQ(features.width, 1u); |
| EXPECT_EQ(features.height, 1u); |
| EXPECT_EQ(features.bit_depth, 8u); |
| EXPECT_EQ(features.num_channels, 3u); |
| } |
| |
| TEST(AvifInfoGetTest, WithShorterSize) { |
| const Data input = LoadFile("avifinfo_test_1x1.avif"); |
| ASSERT_FALSE(input.empty()); |
| |
| AvifInfoFeatures features; |
| // No more than 'file_size' bytes should be read, even if more are passed. |
| EXPECT_EQ(AvifInfoGetWithSize(input.data(), /*data_size=*/input.size() * 10, |
| &features, |
| /*file_size=*/input.size()), |
| kAvifInfoOk); |
| EXPECT_EQ(features.width, 1u); |
| EXPECT_EQ(features.height, 1u); |
| EXPECT_EQ(features.bit_depth, 8u); |
| EXPECT_EQ(features.num_channels, 3u); |
| } |
| |
| TEST(AvifInfoGetTest, EnoughBytes) { |
| Data input = LoadFile("avifinfo_test_1x1.avif"); |
| ASSERT_FALSE(input.empty()); |
| // Truncate 'input' just after the required information (discard AV1 box). |
| const uint8_t kMdatTag[] = {'m', 'd', 'a', 't'}; |
| input.resize(std::search(input.begin(), input.end(), kMdatTag, kMdatTag + 4) - |
| input.begin()); |
| |
| AvifInfoFeatures features; |
| EXPECT_EQ(AvifInfoGet(input.data(), input.size(), &features), kAvifInfoOk); |
| EXPECT_EQ(features.width, 1u); |
| EXPECT_EQ(features.height, 1u); |
| EXPECT_EQ(features.bit_depth, 8u); |
| EXPECT_EQ(features.num_channels, 3u); |
| } |
| |
| TEST(AvifInfoGetTest, Null) { |
| const Data input = LoadFile("avifinfo_test_1x1.avif"); |
| ASSERT_FALSE(input.empty()); |
| |
| EXPECT_EQ(AvifInfoGet(input.data(), input.size(), nullptr), kAvifInfoOk); |
| EXPECT_EQ( |
| AvifInfoGetWithSize(input.data(), input.size(), nullptr, input.size()), |
| kAvifInfoOk); |
| } |
| |
| //------------------------------------------------------------------------------ |
| // Negative tests |
| |
| TEST(AvifInfoGetTest, Empty) { |
| AvifInfoFeatures features; |
| EXPECT_EQ(AvifInfoGet(nullptr, 0, &features), kAvifInfoNotEnoughData); |
| EXPECT_EQ(features.width, 0u); |
| EXPECT_EQ(features.height, 0u); |
| EXPECT_EQ(features.bit_depth, 0u); |
| EXPECT_EQ(features.num_channels, 0u); |
| } |
| |
| TEST(AvifInfoGetTest, NotEnoughBytes) { |
| Data input = LoadFile("avifinfo_test_1x1.avif"); |
| ASSERT_FALSE(input.empty()); |
| // Truncate 'input' before having all the required information. |
| const uint8_t kIpmaTag[] = {'i', 'p', 'm', 'a'}; |
| input.resize(std::search(input.begin(), input.end(), kIpmaTag, kIpmaTag + 4) - |
| input.begin()); |
| |
| AvifInfoFeatures features; |
| EXPECT_EQ(AvifInfoGet(input.data(), input.size(), &features), |
| kAvifInfoNotEnoughData); |
| } |
| |
| TEST(AvifInfoGetTest, Broken) { |
| Data input = LoadFile("avifinfo_test_1x1.avif"); |
| ASSERT_FALSE(input.empty()); |
| // Change "ispe" to "aspe". |
| const uint8_t kIspeTag[] = {'i', 's', 'p', 'e'}; |
| std::search(input.begin(), input.end(), kIspeTag, kIspeTag + 4)[0] = 'a'; |
| |
| AvifInfoFeatures features; |
| EXPECT_EQ(AvifInfoGet(input.data(), input.size(), &features), |
| kAvifInfoInvalidFile); |
| EXPECT_EQ(features.width, 0u); |
| EXPECT_EQ(features.height, 0u); |
| EXPECT_EQ(features.bit_depth, 0u); |
| EXPECT_EQ(features.num_channels, 0u); |
| } |
| |
| TEST(AvifInfoGetTest, MetaBoxIsTooBig) { |
| Data input = LoadFile("avifinfo_test_1x1.avif"); |
| ASSERT_FALSE(input.empty()); |
| // Change "meta" box size to the maximum size 2^32-1. |
| const uint8_t kMetaTag[] = {'m', 'e', 't', 'a'}; |
| auto meta_tag = |
| std::search(input.begin(), input.end(), kMetaTag, kMetaTag + 4); |
| meta_tag[-4] = meta_tag[-3] = meta_tag[-2] = meta_tag[-1] = 255; |
| |
| AvifInfoFeatures features; |
| EXPECT_EQ(AvifInfoGet(input.data(), input.size(), &features), |
| kAvifInfoTooComplex); |
| EXPECT_EQ(features.width, 0u); |
| EXPECT_EQ(features.height, 0u); |
| EXPECT_EQ(features.bit_depth, 0u); |
| EXPECT_EQ(features.num_channels, 0u); |
| } |
| |
| TEST(AvifInfoGetTest, TooManyBoxes) { |
| // Create a valid-ish input with too many boxes to parse. |
| Data input = {0, 0, 0, 16, 'f', 't', 'y', 'p', |
| 'a', 'v', 'i', 'f', 0, 0, 0, 0}; |
| const uint32_t kNumBoxes = 12345; |
| input.reserve(input.size() + kNumBoxes * 8); |
| for (uint32_t i = 0; i < kNumBoxes; ++i) { |
| const uint8_t kBox[] = {0, 0, 0, 8, 'a', 'b', 'c', 'd'}; |
| input.insert(input.end(), kBox, kBox + kBox[3]); |
| } |
| |
| AvifInfoFeatures features; |
| EXPECT_EQ(AvifInfoGet(reinterpret_cast<uint8_t*>(input.data()), |
| input.size() * 4, &features), |
| kAvifInfoTooComplex); |
| } |
| |
| //------------------------------------------------------------------------------ |
| |
| } // namespace |