| /* |
| * Copyright 2014 Google Inc. |
| * |
| * 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. |
| */ |
| |
| // Author: Victor Chudnovsky |
| |
| #include <cstddef> |
| |
| #include "pagespeed/kernel/base/basictypes.h" |
| #include "pagespeed/kernel/base/gtest.h" |
| #include "pagespeed/kernel/base/message_handler.h" |
| #include "pagespeed/kernel/base/mock_message_handler.h" |
| #include "pagespeed/kernel/base/null_mutex.h" |
| #include "pagespeed/kernel/base/scoped_ptr.h" |
| #include "pagespeed/kernel/base/string.h" |
| #include "pagespeed/kernel/image/frame_interface_optimizer.h" |
| #include "pagespeed/kernel/image/gif_reader.h" |
| #include "pagespeed/kernel/image/image_frame_interface.h" |
| #include "pagespeed/kernel/image/image_util.h" |
| #include "pagespeed/kernel/image/scanline_interface.h" |
| #include "pagespeed/kernel/image/scanline_interface_frame_adapter.h" |
| #include "pagespeed/kernel/image/scanline_status.h" |
| #include "pagespeed/kernel/image/test_utils.h" |
| |
| namespace pagespeed { |
| |
| namespace image_compression { |
| |
| // Friend adapter so we can instantiate GifFrameReader. |
| class TestGifFrameReader : public GifFrameReader { |
| public: |
| explicit TestGifFrameReader(MessageHandler* handler) : |
| GifFrameReader(handler) {} |
| }; |
| |
| } // namespace image_compression |
| |
| } // namespace pagespeed |
| |
| namespace { |
| |
| using net_instaweb::MockMessageHandler; |
| using net_instaweb::NullMutex; |
| using pagespeed::image_compression::kAlphaOpaque; |
| using pagespeed::image_compression::kAlphaTransparent; |
| using pagespeed::image_compression::size_px; |
| using pagespeed::image_compression::kGifTestDir; |
| using pagespeed::image_compression::FrameToScanlineReaderAdapter; |
| using pagespeed::image_compression::GifFrameReader; |
| using pagespeed::image_compression::MultipleFramePaddingReader; |
| using pagespeed::image_compression::MultipleFrameReader; |
| using pagespeed::image_compression::PackAsRgba; |
| using pagespeed::image_compression::PixelFormat; |
| using pagespeed::image_compression::PixelRgbaChannels; |
| using pagespeed::image_compression::PixelRgbaChannelsToString; |
| using pagespeed::image_compression::ReadTestFile; |
| using pagespeed::image_compression::RGBA_8888; |
| using pagespeed::image_compression::ScanlineReaderInterface; |
| using pagespeed::image_compression::ScanlineStatus; |
| using pagespeed::image_compression::TestGifFrameReader; |
| |
| // Tests for FrameToScanlineReaderAdapter composed with |
| // MultipleFramePaddingReader. |
| class FrameScanlineAdapterWithPaddingTest : public testing::Test { |
| public: |
| FrameScanlineAdapterWithPaddingTest() |
| : message_handler_(new NullMutex) { |
| } |
| |
| protected: |
| // Verifies that the pixels in the positions [start,end) all have the |
| // value 'color' by comparing as many bytes as appropriate for the |
| // given pixel format. |
| void VerifyPixels(const void* const scanline, size_px start, size_px end, |
| const PixelRgbaChannels color, PixelFormat format) { |
| size_t bytes_per_pixel = GetBytesPerPixel(format); |
| for (size_px idx = start; idx < end; ++idx) { |
| // We ASSERT rather than EXPECT here because, in case of failure, |
| // we don't want a log message for every single pixel. |
| ASSERT_EQ(0, memcmp((static_cast<const uint8_t*>(scanline) + |
| idx * bytes_per_pixel), |
| color, |
| bytes_per_pixel)) |
| << "[" << start << "," << end << "] (bpp:" << bytes_per_pixel << ")" |
| << " got: " |
| << PixelRgbaChannelsToString(static_cast<const uint8_t *>(scanline) + |
| idx * bytes_per_pixel) |
| << " want: " << PixelRgbaChannelsToString(color); |
| } |
| } |
| |
| |
| protected: |
| MockMessageHandler message_handler_; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(FrameScanlineAdapterWithPaddingTest); |
| }; |
| |
| TEST_F(FrameScanlineAdapterWithPaddingTest, ReaderPadsLines) { |
| GoogleString in; |
| ReadTestFile(kGifTestDir, "frame_smaller_than_screen", "gif", &in); |
| |
| // Note that these consts are specific to this particular |
| // image we're testing. |
| const PixelRgbaChannels kTransparent = {0, 0, 0, kAlphaTransparent}; |
| const PixelRgbaChannels kRed = {0xD9, 0x20, 0x20, kAlphaOpaque}; |
| const size_px kWidth = 15; |
| const size_px kHeight = 14; |
| const size_px kForegroundYBegin = 1; |
| const size_px kForegroundYEnd = 4; |
| const size_px kForegroundXBegin = 2; |
| const size_px kForegroundXEnd = 7; |
| |
| net_instaweb::scoped_ptr<MultipleFrameReader> mf_reader( |
| new TestGifFrameReader(&message_handler_)); |
| ASSERT_TRUE(mf_reader != NULL); |
| net_instaweb::scoped_ptr<ScanlineReaderInterface> reader( |
| new FrameToScanlineReaderAdapter( |
| new MultipleFramePaddingReader(mf_reader.release()))); |
| ASSERT_TRUE(reader != NULL); |
| ScanlineStatus status = reader->InitializeWithStatus(in.c_str(), in.size()); |
| ASSERT_TRUE(status.Success()) << status.ToString(); |
| |
| EXPECT_EQ(kWidth, reader->GetImageWidth()); |
| EXPECT_EQ(kHeight, reader->GetImageHeight()); |
| EXPECT_EQ(RGBA_8888, reader->GetPixelFormat()); |
| |
| uint32_t* scanline = NULL; |
| for (int j = 0; j < kHeight; ++j) { |
| EXPECT_TRUE(reader->HasMoreScanLines()); |
| reader->ReadNextScanlineWithStatus(reinterpret_cast<void **>(&scanline)); |
| EXPECT_TRUE(status.Success()) << status.ToString(); |
| if ((j < kForegroundYBegin) || (j >= kForegroundYEnd)) { |
| VerifyPixels(scanline, 0, kWidth, kTransparent, reader->GetPixelFormat()); |
| } else { |
| VerifyPixels(scanline, 0, kForegroundXBegin, |
| kTransparent, reader->GetPixelFormat()); |
| VerifyPixels(scanline, kForegroundXBegin, kForegroundXEnd, |
| kRed, reader->GetPixelFormat()); |
| VerifyPixels(scanline, kForegroundXEnd, kWidth, |
| kTransparent, reader->GetPixelFormat()); |
| } |
| } |
| } |
| |
| } // namespace |