| // Copyright 2020 Google LLC |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| // Incremental decoding test. |
| |
| #include <string> |
| #include <tuple> |
| |
| #include "include/helpers.h" |
| #include "include/helpers_incr.h" |
| #include "src/wp2/decode.h" |
| |
| namespace WP2 { |
| namespace { |
| |
| //------------------------------------------------------------------------------ |
| |
| class IncrementalDecoderTest |
| : public testing::TestWithParam< |
| std::tuple<std::string, bool, uint32_t, |
| DecoderConfig::IncrementalMode, testutil::DecoderType>> {}; |
| |
| TEST_P(IncrementalDecoderTest, Simple) { |
| const std::string src_file_name = std::get<0>(GetParam()); |
| const bool lossless = std::get<1>(GetParam()); |
| const float quality = lossless ? 100.f : 75.f; |
| const uint32_t thread_level = std::get<2>(GetParam()); |
| const DecoderConfig::IncrementalMode incremental_mode = |
| std::get<3>(GetParam()); |
| const testutil::DecoderType decoder_type = std::get<4>(GetParam()); |
| |
| ArgbBuffer src; |
| MemoryWriter writer; |
| ASSERT_WP2_OK(testutil::CompressImage(src_file_name, &writer, &src, quality)); |
| |
| DecoderConfig config = DecoderConfig::kDefault; |
| config.thread_level = thread_level; |
| config.incremental_mode = incremental_mode; |
| |
| ArgbBuffer reference_output(WP2_Argb_32); |
| if (!lossless) { |
| ASSERT_WP2_OK(Decode(writer.mem_, writer.size_, &reference_output, config)); |
| } |
| |
| // Try incremental decoding with different steps. |
| for (const size_t step : {(size_t)1, writer.size_ / 20, writer.size_}) { |
| std::vector<ArgbBuffer> decoded_frames; |
| ASSERT_WP2_OK(testutil::DecodeIncremental( |
| config, {writer.mem_, writer.size_}, |
| {step, decoder_type, WP2_Argb_32, /*cmp=*/false, {}}, &decoded_frames)); |
| ASSERT_EQ(decoded_frames.size(), 1u); |
| EXPECT_TRUE(testutil::Compare(src, decoded_frames.front(), src_file_name, |
| testutil::GetExpectedDistortion(quality))); |
| |
| // Assert that the output of the incremental decoder is the same as Decode() |
| // for lossy. |
| if (!lossless) { |
| EXPECT_TRUE(testutil::Compare(decoded_frames.front(), reference_output, |
| src_file_name)); |
| } |
| } |
| } |
| |
| //------------------------------------------------------------------------------ |
| |
| INSTANTIATE_TEST_SUITE_P( |
| IncrementalDecoderTestInstantiationPartialMultiTile, IncrementalDecoderTest, |
| testing::Combine( |
| testing::Values("source0.pgm") /* several tiles */, |
| testing::Values(false) /* lossy */, |
| testing::Values(64) /* extra threads */, |
| testing::Values(DecoderConfig::IncrementalMode::PARTIAL_TILE_CONTEXT), |
| testing::Values(testutil::DecoderType::kUnstableCustom))); |
| |
| //------------------------------------------------------------------------------ |
| |
| // Tests that fully decoding then rewinding an image generates the same metadata |
| // position in the bitstream. |
| TEST(IncrementalDecoderTest, RewindAfterMetadata) { |
| MemoryWriter writer; |
| ASSERT_WP2_OK(testutil::CompressImage("source1_64x48.png", &writer)); |
| |
| const testutil::IncrementalDecodingTestSetup setup( |
| writer.size_, testutil::DecoderType::kArray, WP2_ARGB_32, /*cmp=*/false, |
| {{testutil::DecoderAction::Type::kRewindKeepBytes, writer.size_ + 1, |
| /*output_buffer_changed*/ 0}}); |
| ASSERT_WP2_OK(testutil::DecodeIncremental( |
| DecoderConfig::kDefault, {writer.mem_, writer.size_}, setup)); |
| } |
| |
| //------------------------------------------------------------------------------ |
| |
| // Tests that decoding one byte at a time generates the same result as all bytes |
| // in one shot. |
| TEST(IncrementalDecoderTest, Compare) { |
| MemoryWriter writer; |
| ASSERT_WP2_OK(testutil::CompressImage("source1_64x48.png", &writer)); |
| |
| const testutil::IncrementalDecodingTestSetup setup( |
| writer.size_, testutil::DecoderType::kArray, WP2_RGBA_32, /*cmp=*/true, |
| {}); |
| ASSERT_WP2_OK(testutil::DecodeIncremental( |
| DecoderConfig::kDefault, {writer.mem_, writer.size_}, setup)); |
| } |
| |
| //------------------------------------------------------------------------------ |
| |
| } // namespace |
| } // namespace WP2 |