Adding upstream version 115.8.0esr.upstream/115.8.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1076 insertions, 0 deletions

diff --git a/image/test/gtest/Common.cpp b/image/test/gtest/Common.cpp
new file mode 100644
index 0000000000..d0ddbecedf
--- /dev/null
+++ b/image/test/gtest/Common.cpp
@@ -0,0 +1,1076 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "Common.h"
+
+#include <cstdlib>
+
+#include "gfxPlatform.h"
+
+#include "ImageFactory.h"
+#include "imgITools.h"
+#include "mozilla/Preferences.h"
+#include "nsComponentManagerUtils.h"
+#include "nsDirectoryServiceDefs.h"
+#include "nsIFile.h"
+#include "nsIInputStream.h"
+#include "nsIProperties.h"
+#include "nsNetUtil.h"
+#include "mozilla/RefPtr.h"
+#include "nsStreamUtils.h"
+#include "nsString.h"
+
+namespace mozilla {
+namespace image {
+
+using namespace gfx;
+
+using std::vector;
+
+static bool sImageLibInitialized = false;
+
+AutoInitializeImageLib::AutoInitializeImageLib() {
+  if (MOZ_LIKELY(sImageLibInitialized)) {
+    return;
+  }
+
+  EXPECT_TRUE(NS_IsMainThread());
+  sImageLibInitialized = true;
+
+  // Ensure WebP is enabled to run decoder tests.
+  nsresult rv = Preferences::SetBool("image.webp.enabled", true);
+  EXPECT_TRUE(rv == NS_OK);
+
+  // Ensure AVIF is enabled to run decoder tests.
+  rv = Preferences::SetBool("image.avif.enabled", true);
+  EXPECT_TRUE(rv == NS_OK);
+  rv = Preferences::SetBool("image.avif.sequence.enabled", true);
+  EXPECT_TRUE(rv == NS_OK);
+
+#ifdef MOZ_JXL
+  // Ensure JXL is enabled to run decoder tests.
+  rv = Preferences::SetBool("image.jxl.enabled", true);
+  EXPECT_TRUE(rv == NS_OK);
+#endif
+
+  // Ensure that ImageLib services are initialized.
+  nsCOMPtr<imgITools> imgTools =
+      do_CreateInstance("@mozilla.org/image/tools;1");
+  EXPECT_TRUE(imgTools != nullptr);
+
+  // Ensure gfxPlatform is initialized.
+  gfxPlatform::GetPlatform();
+
+  // Ensure we always color manage images with gtests.
+  gfxPlatform::SetCMSModeOverride(CMSMode::All);
+
+  // Depending on initialization order, it is possible that our pref changes
+  // have not taken effect yet because there are pending gfx-related events on
+  // the main thread.
+  SpinPendingEvents();
+}
+
+void ImageBenchmarkBase::SetUp() {
+  nsCOMPtr<nsIInputStream> inputStream = LoadFile(mTestCase.mPath);
+  ASSERT_TRUE(inputStream != nullptr);
+
+  // Figure out how much data we have.
+  uint64_t length;
+  nsresult rv = inputStream->Available(&length);
+  ASSERT_NS_SUCCEEDED(rv);
+
+  // Write the data into a SourceBuffer.
+  mSourceBuffer = new SourceBuffer();
+  mSourceBuffer->ExpectLength(length);
+  rv = mSourceBuffer->AppendFromInputStream(inputStream, length);
+  ASSERT_NS_SUCCEEDED(rv);
+  mSourceBuffer->Complete(NS_OK);
+}
+
+void ImageBenchmarkBase::TearDown() {}
+
+///////////////////////////////////////////////////////////////////////////////
+// General Helpers
+///////////////////////////////////////////////////////////////////////////////
+
+// These macros work like gtest's ASSERT_* macros, except that they can be used
+// in functions that return values.
+#define ASSERT_TRUE_OR_RETURN(e, rv) \
+  EXPECT_TRUE(e);                    \
+  if (!(e)) {                        \
+    return rv;                       \
+  }
+
+#define ASSERT_EQ_OR_RETURN(a, b, rv) \
+  EXPECT_EQ(a, b);                    \
+  if ((a) != (b)) {                   \
+    return rv;                        \
+  }
+
+#define ASSERT_GE_OR_RETURN(a, b, rv) \
+  EXPECT_GE(a, b);                    \
+  if (!((a) >= (b))) {                \
+    return rv;                        \
+  }
+
+#define ASSERT_LE_OR_RETURN(a, b, rv) \
+  EXPECT_LE(a, b);                    \
+  if (!((a) <= (b))) {                \
+    return rv;                        \
+  }
+
+#define ASSERT_LT_OR_RETURN(a, b, rv) \
+  EXPECT_LT(a, b);                    \
+  if (!((a) < (b))) {                 \
+    return rv;                        \
+  }
+
+void SpinPendingEvents() {
+  nsCOMPtr<nsIThread> mainThread = do_GetMainThread();
+  EXPECT_TRUE(mainThread != nullptr);
+
+  bool processed;
+  do {
+    processed = false;
+    nsresult rv = mainThread->ProcessNextEvent(false, &processed);
+    EXPECT_NS_SUCCEEDED(rv);
+  } while (processed);
+}
+
+already_AddRefed<nsIInputStream> LoadFile(const char* aRelativePath) {
+  nsresult rv;
+
+  nsCOMPtr<nsIProperties> dirService =
+      do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID);
+  ASSERT_TRUE_OR_RETURN(dirService != nullptr, nullptr);
+
+  // Retrieve the current working directory.
+  nsCOMPtr<nsIFile> file;
+  rv = dirService->Get(NS_OS_CURRENT_WORKING_DIR, NS_GET_IID(nsIFile),
+                       getter_AddRefs(file));
+  ASSERT_TRUE_OR_RETURN(NS_SUCCEEDED(rv), nullptr);
+  // Construct the final path by appending the working path to the current
+  // working directory.
+  file->AppendNative(nsDependentCString(aRelativePath));
+
+  // Construct an input stream for the requested file.
+  nsCOMPtr<nsIInputStream> inputStream;
+  rv = NS_NewLocalFileInputStream(getter_AddRefs(inputStream), file);
+  ASSERT_TRUE_OR_RETURN(NS_SUCCEEDED(rv), nullptr);
+
+  // Ensure the resulting input stream is buffered.
+  if (!NS_InputStreamIsBuffered(inputStream)) {
+    nsCOMPtr<nsIInputStream> bufStream;
+    rv = NS_NewBufferedInputStream(getter_AddRefs(bufStream),
+                                   inputStream.forget(), 1024);
+    ASSERT_TRUE_OR_RETURN(NS_SUCCEEDED(rv), nullptr);
+    inputStream = bufStream;
+  }
+
+  return inputStream.forget();
+}
+
+bool IsSolidColor(SourceSurface* aSurface, BGRAColor aColor,
+                  uint8_t aFuzz /* = 0 */) {
+  IntSize size = aSurface->GetSize();
+  return RectIsSolidColor(aSurface, IntRect(0, 0, size.width, size.height),
+                          aColor, aFuzz);
+}
+
+bool RowsAreSolidColor(SourceSurface* aSurface, int32_t aStartRow,
+                       int32_t aRowCount, BGRAColor aColor,
+                       uint8_t aFuzz /* = 0 */) {
+  IntSize size = aSurface->GetSize();
+  return RectIsSolidColor(
+      aSurface, IntRect(0, aStartRow, size.width, aRowCount), aColor, aFuzz);
+}
+
+bool RectIsSolidColor(SourceSurface* aSurface, const IntRect& aRect,
+                      BGRAColor aColor, uint8_t aFuzz /* = 0 */) {
+  IntSize surfaceSize = aSurface->GetSize();
+  IntRect rect =
+      aRect.Intersect(IntRect(0, 0, surfaceSize.width, surfaceSize.height));
+
+  RefPtr<DataSourceSurface> dataSurface = aSurface->GetDataSurface();
+  ASSERT_TRUE_OR_RETURN(dataSurface != nullptr, false);
+
+  DataSourceSurface::ScopedMap mapping(dataSurface,
+                                       DataSourceSurface::MapType::READ);
+  ASSERT_TRUE_OR_RETURN(mapping.IsMapped(), false);
+  ASSERT_EQ_OR_RETURN(mapping.GetStride(), surfaceSize.width * 4, false);
+
+  uint8_t* data = mapping.GetData();
+  ASSERT_TRUE_OR_RETURN(data != nullptr, false);
+
+  BGRAColor pmColor = aColor.Premultiply();
+  uint32_t expectedPixel = pmColor.AsPixel();
+
+  int32_t rowLength = mapping.GetStride();
+  for (int32_t row = rect.Y(); row < rect.YMost(); ++row) {
+    for (int32_t col = rect.X(); col < rect.XMost(); ++col) {
+      int32_t i = row * rowLength + col * 4;
+      uint32_t gotPixel = *reinterpret_cast<uint32_t*>(data + i);
+      if (expectedPixel != gotPixel) {
+        BGRAColor gotColor = BGRAColor::FromPixel(gotPixel);
+        if (abs(pmColor.mBlue - gotColor.mBlue) > aFuzz ||
+            abs(pmColor.mGreen - gotColor.mGreen) > aFuzz ||
+            abs(pmColor.mRed - gotColor.mRed) > aFuzz ||
+            abs(pmColor.mAlpha - gotColor.mAlpha) > aFuzz) {
+          EXPECT_EQ(expectedPixel, gotPixel)
+              << "Color mismatch for rectangle from " << aRect.TopLeft()
+              << " to " << aRect.BottomRight() << ": "
+              << "got rgba(" << static_cast<int>(gotColor.mRed) << ", "
+              << static_cast<int>(gotColor.mGreen) << ", "
+              << static_cast<int>(gotColor.mBlue) << ", "
+              << static_cast<int>(gotColor.mAlpha) << "), "
+              << "expected rgba(" << static_cast<int>(pmColor.mRed) << ", "
+              << static_cast<int>(pmColor.mGreen) << ", "
+              << static_cast<int>(pmColor.mBlue) << ", "
+              << static_cast<int>(pmColor.mAlpha) << ")";
+          return false;
+        }
+      }
+    }
+  }
+
+  return true;
+}
+
+bool RowHasPixels(SourceSurface* aSurface, int32_t aRow,
+                  const vector<BGRAColor>& aPixels) {
+  ASSERT_GE_OR_RETURN(aRow, 0, false);
+
+  IntSize surfaceSize = aSurface->GetSize();
+  ASSERT_EQ_OR_RETURN(aPixels.size(), size_t(surfaceSize.width), false);
+  ASSERT_LT_OR_RETURN(aRow, surfaceSize.height, false);
+
+  RefPtr<DataSourceSurface> dataSurface = aSurface->GetDataSurface();
+  ASSERT_TRUE_OR_RETURN(dataSurface, false);
+
+  DataSourceSurface::ScopedMap mapping(dataSurface,
+                                       DataSourceSurface::MapType::READ);
+  ASSERT_TRUE_OR_RETURN(mapping.IsMapped(), false);
+  ASSERT_EQ_OR_RETURN(mapping.GetStride(), surfaceSize.width * 4, false);
+
+  uint8_t* data = mapping.GetData();
+  ASSERT_TRUE_OR_RETURN(data != nullptr, false);
+
+  int32_t rowLength = mapping.GetStride();
+  for (int32_t col = 0; col < surfaceSize.width; ++col) {
+    int32_t i = aRow * rowLength + col * 4;
+    uint32_t gotPixelData = *reinterpret_cast<uint32_t*>(data + i);
+    BGRAColor gotPixel = BGRAColor::FromPixel(gotPixelData);
+    EXPECT_EQ(aPixels[col].mBlue, gotPixel.mBlue);
+    EXPECT_EQ(aPixels[col].mGreen, gotPixel.mGreen);
+    EXPECT_EQ(aPixels[col].mRed, gotPixel.mRed);
+    EXPECT_EQ(aPixels[col].mAlpha, gotPixel.mAlpha);
+    ASSERT_EQ_OR_RETURN(aPixels[col].AsPixel(), gotPixelData, false);
+  }
+
+  return true;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// SurfacePipe Helpers
+///////////////////////////////////////////////////////////////////////////////
+
+already_AddRefed<Decoder> CreateTrivialDecoder() {
+  DecoderType decoderType = DecoderFactory::GetDecoderType("image/gif");
+  auto sourceBuffer = MakeNotNull<RefPtr<SourceBuffer>>();
+  RefPtr<Decoder> decoder = DecoderFactory::CreateAnonymousDecoder(
+      decoderType, sourceBuffer, Nothing(), DefaultDecoderFlags(),
+      DefaultSurfaceFlags());
+  return decoder.forget();
+}
+
+void AssertCorrectPipelineFinalState(SurfaceFilter* aFilter,
+                                     const IntRect& aInputSpaceRect,
+                                     const IntRect& aOutputSpaceRect) {
+  EXPECT_TRUE(aFilter->IsSurfaceFinished());
+  Maybe<SurfaceInvalidRect> invalidRect = aFilter->TakeInvalidRect();
+  EXPECT_TRUE(invalidRect.isSome());
+  EXPECT_EQ(aInputSpaceRect, invalidRect->mInputSpaceRect.ToUnknownRect());
+  EXPECT_EQ(aOutputSpaceRect, invalidRect->mOutputSpaceRect.ToUnknownRect());
+}
+
+void CheckGeneratedImage(Decoder* aDecoder, const IntRect& aRect,
+                         uint8_t aFuzz /* = 0 */) {
+  RawAccessFrameRef currentFrame = aDecoder->GetCurrentFrameRef();
+  RefPtr<SourceSurface> surface = currentFrame->GetSourceSurface();
+  CheckGeneratedSurface(surface, aRect, BGRAColor::Green(),
+                        BGRAColor::Transparent(), aFuzz);
+}
+
+void CheckGeneratedSurface(SourceSurface* aSurface, const IntRect& aRect,
+                           const BGRAColor& aInnerColor,
+                           const BGRAColor& aOuterColor,
+                           uint8_t aFuzz /* = 0 */) {
+  const IntSize surfaceSize = aSurface->GetSize();
+
+  // This diagram shows how the surface is divided into regions that the code
+  // below tests for the correct content. The output rect is the bounds of the
+  // region labeled 'C'.
+  //
+  // +---------------------------+
+  // |             A             |
+  // +---------+--------+--------+
+  // |    B    |   C    |   D    |
+  // +---------+--------+--------+
+  // |             E             |
+  // +---------------------------+
+
+  // Check that the output rect itself is the inner color. (Region 'C'.)
+  EXPECT_TRUE(RectIsSolidColor(aSurface, aRect, aInnerColor, aFuzz));
+
+  // Check that the area above the output rect is the outer color. (Region 'A'.)
+  EXPECT_TRUE(RectIsSolidColor(aSurface,
+                               IntRect(0, 0, surfaceSize.width, aRect.Y()),
+                               aOuterColor, aFuzz));
+
+  // Check that the area to the left of the output rect is the outer color.
+  // (Region 'B'.)
+  EXPECT_TRUE(RectIsSolidColor(aSurface,
+                               IntRect(0, aRect.Y(), aRect.X(), aRect.YMost()),
+                               aOuterColor, aFuzz));
+
+  // Check that the area to the right of the output rect is the outer color.
+  // (Region 'D'.)
+  const int32_t widthOnRight = surfaceSize.width - aRect.XMost();
+  EXPECT_TRUE(RectIsSolidColor(
+      aSurface, IntRect(aRect.XMost(), aRect.Y(), widthOnRight, aRect.YMost()),
+      aOuterColor, aFuzz));
+
+  // Check that the area below the output rect is the outer color. (Region 'E'.)
+  const int32_t heightBelow = surfaceSize.height - aRect.YMost();
+  EXPECT_TRUE(RectIsSolidColor(
+      aSurface, IntRect(0, aRect.YMost(), surfaceSize.width, heightBelow),
+      aOuterColor, aFuzz));
+}
+
+void CheckWritePixels(Decoder* aDecoder, SurfaceFilter* aFilter,
+                      const Maybe<IntRect>& aOutputRect /* = Nothing() */,
+                      const Maybe<IntRect>& aInputRect /* = Nothing() */,
+                      const Maybe<IntRect>& aInputWriteRect /* = Nothing() */,
+                      const Maybe<IntRect>& aOutputWriteRect /* = Nothing() */,
+                      uint8_t aFuzz /* = 0 */) {
+  CheckTransformedWritePixels(aDecoder, aFilter, BGRAColor::Green(),
+                              BGRAColor::Green(), aOutputRect, aInputRect,
+                              aInputWriteRect, aOutputWriteRect, aFuzz);
+}
+
+void CheckTransformedWritePixels(
+    Decoder* aDecoder, SurfaceFilter* aFilter, const BGRAColor& aInputColor,
+    const BGRAColor& aOutputColor,
+    const Maybe<IntRect>& aOutputRect /* = Nothing() */,
+    const Maybe<IntRect>& aInputRect /* = Nothing() */,
+    const Maybe<IntRect>& aInputWriteRect /* = Nothing() */,
+    const Maybe<IntRect>& aOutputWriteRect /* = Nothing() */,
+    uint8_t aFuzz /* = 0 */) {
+  IntRect outputRect = aOutputRect.valueOr(IntRect(0, 0, 100, 100));
+  IntRect inputRect = aInputRect.valueOr(IntRect(0, 0, 100, 100));
+  IntRect inputWriteRect = aInputWriteRect.valueOr(inputRect);
+  IntRect outputWriteRect = aOutputWriteRect.valueOr(outputRect);
+
+  // Fill the image.
+  int32_t count = 0;
+  auto result = aFilter->WritePixels<uint32_t>([&] {
+    ++count;
+    return AsVariant(aInputColor.AsPixel());
+  });
+  EXPECT_EQ(WriteState::FINISHED, result);
+  EXPECT_EQ(inputWriteRect.Width() * inputWriteRect.Height(), count);
+
+  AssertCorrectPipelineFinalState(aFilter, inputRect, outputRect);
+
+  // Attempt to write more data and make sure nothing changes.
+  const int32_t oldCount = count;
+  result = aFilter->WritePixels<uint32_t>([&] {
+    ++count;
+    return AsVariant(aInputColor.AsPixel());
+  });
+  EXPECT_EQ(oldCount, count);
+  EXPECT_EQ(WriteState::FINISHED, result);
+  EXPECT_TRUE(aFilter->IsSurfaceFinished());
+  Maybe<SurfaceInvalidRect> invalidRect = aFilter->TakeInvalidRect();
+  EXPECT_TRUE(invalidRect.isNothing());
+
+  // Attempt to advance to the next row and make sure nothing changes.
+  aFilter->AdvanceRow();
+  EXPECT_TRUE(aFilter->IsSurfaceFinished());
+  invalidRect = aFilter->TakeInvalidRect();
+  EXPECT_TRUE(invalidRect.isNothing());
+
+  // Check that the generated image is correct.
+  RawAccessFrameRef currentFrame = aDecoder->GetCurrentFrameRef();
+  RefPtr<SourceSurface> surface = currentFrame->GetSourceSurface();
+  CheckGeneratedSurface(surface, outputWriteRect, aOutputColor,
+                        BGRAColor::Transparent(), aFuzz);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// Test Data
+///////////////////////////////////////////////////////////////////////////////
+
+ImageTestCase GreenPNGTestCase() {
+  return ImageTestCase("green.png", "image/png", IntSize(100, 100));
+}
+
+ImageTestCase GreenGIFTestCase() {
+  return ImageTestCase("green.gif", "image/gif", IntSize(100, 100));
+}
+
+ImageTestCase GreenJPGTestCase() {
+  return ImageTestCase("green.jpg", "image/jpeg", IntSize(100, 100),
+                       TEST_CASE_IS_FUZZY);
+}
+
+ImageTestCase GreenBMPTestCase() {
+  return ImageTestCase("green.bmp", "image/bmp", IntSize(100, 100));
+}
+
+ImageTestCase GreenICOTestCase() {
+  // This ICO contains a 32-bit BMP, and we use a BMP's alpha data by default
+  // when the BMP is embedded in an ICO, so it's transparent.
+  return ImageTestCase("green.ico", "image/x-icon", IntSize(100, 100),
+                       TEST_CASE_IS_TRANSPARENT);
+}
+
+ImageTestCase GreenIconTestCase() {
+  return ImageTestCase("green.icon", "image/icon", IntSize(100, 100),
+                       TEST_CASE_IS_TRANSPARENT);
+}
+
+ImageTestCase GreenWebPTestCase() {
+  return ImageTestCase("green.webp", "image/webp", IntSize(100, 100));
+}
+
+ImageTestCase GreenAVIFTestCase() {
+  return ImageTestCase("green.avif", "image/avif", IntSize(100, 100));
+}
+
+ImageTestCase NonzeroReservedAVIFTestCase() {
+  auto testCase = ImageTestCase("hdlr-nonzero-reserved-bug-1727033.avif",
+                                "image/avif", IntSize(1, 1));
+  testCase.mColor = BGRAColor(0x00, 0x00, 0x00, 0xFF);
+  return testCase;
+}
+
+ImageTestCase MultipleColrAVIFTestCase() {
+  auto testCase = ImageTestCase("valid-avif-colr-nclx-and-prof.avif",
+                                "image/avif", IntSize(1, 1));
+  testCase.mColor = BGRAColor(0x00, 0x00, 0x00, 0xFF);
+  return testCase;
+}
+
+ImageTestCase Transparent10bit420AVIFTestCase() {
+  auto testCase =
+      ImageTestCase("transparent-green-50pct-10bit-yuv420.avif", "image/avif",
+                    IntSize(100, 100), TEST_CASE_IS_TRANSPARENT);
+  testCase.mColor = BGRAColor(0x00, 0xFF, 0x00, 0x80);
+  return testCase;
+}
+
+ImageTestCase Transparent10bit422AVIFTestCase() {
+  auto testCase =
+      ImageTestCase("transparent-green-50pct-10bit-yuv422.avif", "image/avif",
+                    IntSize(100, 100), TEST_CASE_IS_TRANSPARENT);
+  testCase.mColor = BGRAColor(0x00, 0xFF, 0x00, 0x80);
+  return testCase;
+}
+
+ImageTestCase Transparent10bit444AVIFTestCase() {
+  auto testCase =
+      ImageTestCase("transparent-green-50pct-10bit-yuv444.avif", "image/avif",
+                    IntSize(100, 100), TEST_CASE_IS_TRANSPARENT);
+  testCase.mColor = BGRAColor(0x00, 0xFF, 0x00, 0x80);
+  return testCase;
+}
+
+ImageTestCase Transparent12bit420AVIFTestCase() {
+  auto testCase =
+      ImageTestCase("transparent-green-50pct-12bit-yuv420.avif", "image/avif",
+                    IntSize(100, 100), TEST_CASE_IS_TRANSPARENT);
+  testCase.mColor = BGRAColor(0x00, 0xFF, 0x00, 0x80);
+  return testCase;
+}
+
+ImageTestCase Transparent12bit422AVIFTestCase() {
+  auto testCase =
+      ImageTestCase("transparent-green-50pct-12bit-yuv422.avif", "image/avif",
+                    IntSize(100, 100), TEST_CASE_IS_TRANSPARENT);
+  testCase.mColor = BGRAColor(0x00, 0xFF, 0x00, 0x80);
+  return testCase;
+}
+
+ImageTestCase Transparent12bit444AVIFTestCase() {
+  auto testCase =
+      ImageTestCase("transparent-green-50pct-12bit-yuv444.avif", "image/avif",
+                    IntSize(100, 100), TEST_CASE_IS_TRANSPARENT);
+  testCase.mColor = BGRAColor(0x00, 0xFF, 0x00, 0x80);
+  return testCase;
+}
+
+ImageTestCase Transparent8bit420AVIFTestCase() {
+  auto testCase =
+      ImageTestCase("transparent-green-50pct-8bit-yuv420.avif", "image/avif",
+                    IntSize(100, 100), TEST_CASE_IS_TRANSPARENT);
+  // Small error is expected
+  testCase.mColor = BGRAColor(0x02, 0xFF, 0x00, 0x80);
+  return testCase;
+}
+
+ImageTestCase Transparent8bit422AVIFTestCase() {
+  auto testCase =
+      ImageTestCase("transparent-green-50pct-8bit-yuv422.avif", "image/avif",
+                    IntSize(100, 100), TEST_CASE_IS_TRANSPARENT);
+  // Small error is expected
+  testCase.mColor = BGRAColor(0x02, 0xFF, 0x00, 0x80);
+  return testCase;
+}
+
+ImageTestCase Transparent8bit444AVIFTestCase() {
+  auto testCase =
+      ImageTestCase("transparent-green-50pct-8bit-yuv444.avif", "image/avif",
+                    IntSize(100, 100), TEST_CASE_IS_TRANSPARENT);
+  // Small error is expected
+  testCase.mColor = BGRAColor(0x02, 0xFF, 0x00, 0x80);
+  return testCase;
+}
+
+ImageTestCase Gray8bitLimitedRangeBT601AVIFTestCase() {
+  auto testCase = ImageTestCase("gray-235-8bit-limited-range-bt601.avif",
+                                "image/avif", IntSize(100, 100));
+  testCase.mColor = BGRAColor(0xEB, 0xEB, 0xEB, 0xFF);
+  return testCase;
+}
+
+ImageTestCase Gray8bitLimitedRangeBT709AVIFTestCase() {
+  auto testCase = ImageTestCase("gray-235-8bit-limited-range-bt709.avif",
+                                "image/avif", IntSize(100, 100));
+  testCase.mColor = BGRAColor(0xEB, 0xEB, 0xEB, 0xFF);
+  return testCase;
+}
+
+ImageTestCase Gray8bitLimitedRangeBT2020AVIFTestCase() {
+  auto testCase = ImageTestCase("gray-235-8bit-limited-range-bt2020.avif",
+                                "image/avif", IntSize(100, 100));
+  testCase.mColor = BGRAColor(0xEB, 0xEB, 0xEB, 0xFF);
+  return testCase;
+}
+
+ImageTestCase Gray8bitFullRangeBT601AVIFTestCase() {
+  auto testCase = ImageTestCase("gray-235-8bit-full-range-bt601.avif",
+                                "image/avif", IntSize(100, 100));
+  testCase.mColor = BGRAColor(0xEB, 0xEB, 0xEB, 0xFF);
+  return testCase;
+}
+
+ImageTestCase Gray8bitFullRangeBT709AVIFTestCase() {
+  auto testCase = ImageTestCase("gray-235-8bit-full-range-bt709.avif",
+                                "image/avif", IntSize(100, 100));
+  testCase.mColor = BGRAColor(0xEB, 0xEB, 0xEB, 0xFF);
+  return testCase;
+}
+
+ImageTestCase Gray8bitFullRangeBT2020AVIFTestCase() {
+  auto testCase = ImageTestCase("gray-235-8bit-full-range-bt2020.avif",
+                                "image/avif", IntSize(100, 100));
+  testCase.mColor = BGRAColor(0xEB, 0xEB, 0xEB, 0xFF);
+  return testCase;
+}
+
+ImageTestCase Gray10bitLimitedRangeBT601AVIFTestCase() {
+  auto testCase = ImageTestCase("gray-235-10bit-limited-range-bt601.avif",
+                                "image/avif", IntSize(100, 100));
+  // Small error is expected
+  testCase.mColor = BGRAColor(0xEA, 0xEA, 0xEA, 0xFF);
+  return testCase;
+}
+
+ImageTestCase Gray10bitLimitedRangeBT709AVIFTestCase() {
+  auto testCase = ImageTestCase("gray-235-10bit-limited-range-bt709.avif",
+                                "image/avif", IntSize(100, 100));
+  // Small error is expected
+  testCase.mColor = BGRAColor(0xEA, 0xEA, 0xEA, 0xFF);
+  return testCase;
+}
+
+ImageTestCase Gray10bitLimitedRangeBT2020AVIFTestCase() {
+  auto testCase = ImageTestCase("gray-235-10bit-limited-range-bt2020.avif",
+                                "image/avif", IntSize(100, 100));
+  // Small error is expected
+  testCase.mColor = BGRAColor(0xEA, 0xEA, 0xEA, 0xFF);
+  return testCase;
+}
+
+ImageTestCase Gray10bitFullRangeBT601AVIFTestCase() {
+  auto testCase = ImageTestCase("gray-235-10bit-full-range-bt601.avif",
+                                "image/avif", IntSize(100, 100));
+  testCase.mColor = BGRAColor(0xEB, 0xEB, 0xEB, 0xFF);
+  return testCase;
+}
+
+ImageTestCase Gray10bitFullRangeBT709AVIFTestCase() {
+  auto testCase = ImageTestCase("gray-235-10bit-full-range-bt709.avif",
+                                "image/avif", IntSize(100, 100));
+  testCase.mColor = BGRAColor(0xEB, 0xEB, 0xEB, 0xFF);
+  return testCase;
+}
+
+ImageTestCase Gray10bitFullRangeBT2020AVIFTestCase() {
+  auto testCase = ImageTestCase("gray-235-10bit-full-range-bt2020.avif",
+                                "image/avif", IntSize(100, 100));
+  testCase.mColor = BGRAColor(0xEB, 0xEB, 0xEB, 0xFF);
+  return testCase;
+}
+
+ImageTestCase Gray12bitLimitedRangeBT601AVIFTestCase() {
+  auto testCase = ImageTestCase("gray-235-12bit-limited-range-bt601.avif",
+                                "image/avif", IntSize(100, 100));
+  // Small error is expected
+  testCase.mColor = BGRAColor(0xEA, 0xEA, 0xEA, 0xFF);
+  return testCase;
+}
+
+ImageTestCase Gray12bitLimitedRangeBT709AVIFTestCase() {
+  auto testCase = ImageTestCase("gray-235-12bit-limited-range-bt709.avif",
+                                "image/avif", IntSize(100, 100));
+  // Small error is expected
+  testCase.mColor = BGRAColor(0xEA, 0xEA, 0xEA, 0xFF);
+  return testCase;
+}
+
+ImageTestCase Gray12bitLimitedRangeBT2020AVIFTestCase() {
+  auto testCase = ImageTestCase("gray-235-12bit-limited-range-bt2020.avif",
+                                "image/avif", IntSize(100, 100));
+  // Small error is expected
+  testCase.mColor = BGRAColor(0xEA, 0xEA, 0xEA, 0xFF);
+  return testCase;
+}
+
+ImageTestCase Gray12bitFullRangeBT601AVIFTestCase() {
+  auto testCase = ImageTestCase("gray-235-12bit-full-range-bt601.avif",
+                                "image/avif", IntSize(100, 100));
+  testCase.mColor = BGRAColor(0xEB, 0xEB, 0xEB, 0xFF);
+  return testCase;
+}
+
+ImageTestCase Gray12bitFullRangeBT709AVIFTestCase() {
+  auto testCase = ImageTestCase("gray-235-12bit-full-range-bt709.avif",
+                                "image/avif", IntSize(100, 100));
+  testCase.mColor = BGRAColor(0xEB, 0xEB, 0xEB, 0xFF);
+  return testCase;
+}
+
+ImageTestCase Gray12bitFullRangeBT2020AVIFTestCase() {
+  auto testCase = ImageTestCase("gray-235-12bit-full-range-bt2020.avif",
+                                "image/avif", IntSize(100, 100));
+  testCase.mColor = BGRAColor(0xEB, 0xEB, 0xEB, 0xFF);
+  return testCase;
+}
+
+ImageTestCase Gray8bitLimitedRangeGrayscaleAVIFTestCase() {
+  auto testCase = ImageTestCase("gray-235-8bit-limited-range-grayscale.avif",
+                                "image/avif", IntSize(100, 100));
+  testCase.mColor = BGRAColor(0xEB, 0xEB, 0xEB, 0xFF);
+  return testCase;
+}
+
+ImageTestCase Gray8bitFullRangeGrayscaleAVIFTestCase() {
+  auto testCase = ImageTestCase("gray-235-8bit-full-range-grayscale.avif",
+                                "image/avif", IntSize(100, 100));
+  testCase.mColor = BGRAColor(0xEB, 0xEB, 0xEB, 0xFF);
+  return testCase;
+}
+
+ImageTestCase Gray10bitLimitedRangeGrayscaleAVIFTestCase() {
+  auto testCase = ImageTestCase("gray-235-10bit-limited-range-grayscale.avif",
+                                "image/avif", IntSize(100, 100));
+  // Small error is expected
+  testCase.mColor = BGRAColor(0xEA, 0xEA, 0xEA, 0xFF);
+  return testCase;
+}
+
+ImageTestCase Gray10bitFullRangeGrayscaleAVIFTestCase() {
+  auto testCase = ImageTestCase("gray-235-10bit-full-range-grayscale.avif",
+                                "image/avif", IntSize(100, 100));
+  testCase.mColor = BGRAColor(0xEB, 0xEB, 0xEB, 0xFF);
+  return testCase;
+}
+
+ImageTestCase Gray12bitLimitedRangeGrayscaleAVIFTestCase() {
+  auto testCase = ImageTestCase("gray-235-12bit-limited-range-grayscale.avif",
+                                "image/avif", IntSize(100, 100));
+  // Small error is expected
+  testCase.mColor = BGRAColor(0xEA, 0xEA, 0xEA, 0xFF);
+  return testCase;
+}
+
+ImageTestCase Gray12bitFullRangeGrayscaleAVIFTestCase() {
+  auto testCase = ImageTestCase("gray-235-12bit-full-range-grayscale.avif",
+                                "image/avif", IntSize(100, 100));
+  testCase.mColor = BGRAColor(0xEB, 0xEB, 0xEB, 0xFF);
+  return testCase;
+}
+
+ImageTestCase StackCheckAVIFTestCase() {
+  return ImageTestCase("stackcheck.avif", "image/avif", IntSize(4096, 2924),
+                       TEST_CASE_IGNORE_OUTPUT);
+}
+
+// Add TEST_CASE_IGNORE_OUTPUT since this isn't a solid green image and we just
+// want to test that it decodes correctly.
+ImageTestCase MultiLayerAVIFTestCase() {
+  return ImageTestCase("multilayer.avif", "image/avif", IntSize(1280, 720),
+                       TEST_CASE_IGNORE_OUTPUT);
+}
+
+ImageTestCase LargeWebPTestCase() {
+  return ImageTestCase("large.webp", "image/webp", IntSize(1200, 660),
+                       TEST_CASE_IGNORE_OUTPUT);
+}
+
+ImageTestCase LargeAVIFTestCase() {
+  return ImageTestCase("large.avif", "image/avif", IntSize(1200, 660),
+                       TEST_CASE_IGNORE_OUTPUT);
+}
+
+ImageTestCase GreenWebPIccSrgbTestCase() {
+  return ImageTestCase("green.icc_srgb.webp", "image/webp", IntSize(100, 100));
+}
+
+ImageTestCase GreenFirstFrameAnimatedGIFTestCase() {
+  return ImageTestCase("first-frame-green.gif", "image/gif", IntSize(100, 100),
+                       TEST_CASE_IS_ANIMATED);
+}
+
+ImageTestCase GreenFirstFrameAnimatedPNGTestCase() {
+  return ImageTestCase("first-frame-green.png", "image/png", IntSize(100, 100),
+                       TEST_CASE_IS_TRANSPARENT | TEST_CASE_IS_ANIMATED);
+}
+
+ImageTestCase GreenFirstFrameAnimatedWebPTestCase() {
+  return ImageTestCase("first-frame-green.webp", "image/webp",
+                       IntSize(100, 100), TEST_CASE_IS_ANIMATED);
+}
+
+ImageTestCase GreenFirstFrameAnimatedAVIFTestCase() {
+  return ImageTestCase("first-frame-green.avif", "image/avif",
+                       IntSize(100, 100), TEST_CASE_IS_ANIMATED);
+}
+
+ImageTestCase BlendAnimatedGIFTestCase() {
+  return ImageTestCase("blend.gif", "image/gif", IntSize(100, 100),
+                       TEST_CASE_IS_ANIMATED);
+}
+
+ImageTestCase BlendAnimatedPNGTestCase() {
+  return ImageTestCase("blend.png", "image/png", IntSize(100, 100),
+                       TEST_CASE_IS_TRANSPARENT | TEST_CASE_IS_ANIMATED);
+}
+
+ImageTestCase BlendAnimatedWebPTestCase() {
+  return ImageTestCase("blend.webp", "image/webp", IntSize(100, 100),
+                       TEST_CASE_IS_TRANSPARENT | TEST_CASE_IS_ANIMATED);
+}
+
+ImageTestCase BlendAnimatedAVIFTestCase() {
+  return ImageTestCase("blend.avif", "image/avif", IntSize(100, 100),
+                       TEST_CASE_IS_TRANSPARENT | TEST_CASE_IS_ANIMATED);
+}
+
+ImageTestCase CorruptTestCase() {
+  return ImageTestCase("corrupt.jpg", "image/jpeg", IntSize(100, 100),
+                       TEST_CASE_HAS_ERROR);
+}
+
+ImageTestCase CorruptBMPWithTruncatedHeader() {
+  // This BMP has a header which is truncated right between the BIH and the
+  // bitfields, which is a particularly error-prone place w.r.t. the BMP decoder
+  // state machine.
+  return ImageTestCase("invalid-truncated-metadata.bmp", "image/bmp",
+                       IntSize(100, 100), TEST_CASE_HAS_ERROR);
+}
+
+ImageTestCase CorruptICOWithBadBMPWidthTestCase() {
+  // This ICO contains a BMP icon which has a width that doesn't match the size
+  // listed in the corresponding ICO directory entry.
+  return ImageTestCase("corrupt-with-bad-bmp-width.ico", "image/x-icon",
+                       IntSize(100, 100), TEST_CASE_HAS_ERROR);
+}
+
+ImageTestCase CorruptICOWithBadBMPHeightTestCase() {
+  // This ICO contains a BMP icon which has a height that doesn't match the size
+  // listed in the corresponding ICO directory entry.
+  return ImageTestCase("corrupt-with-bad-bmp-height.ico", "image/x-icon",
+                       IntSize(100, 100), TEST_CASE_HAS_ERROR);
+}
+
+ImageTestCase CorruptICOWithBadBppTestCase() {
+  // This test case is an ICO with a BPP (15) in the ICO header which differs
+  // from that in the BMP header itself (1). It should ignore the ICO BPP when
+  // the BMP BPP is available and thus correctly decode the image.
+  return ImageTestCase("corrupt-with-bad-ico-bpp.ico", "image/x-icon",
+                       IntSize(100, 100), TEST_CASE_IS_TRANSPARENT);
+}
+
+ImageTestCase CorruptAVIFTestCase() {
+  return ImageTestCase("bug-1655846.avif", "image/avif", IntSize(100, 100),
+                       TEST_CASE_HAS_ERROR);
+}
+
+ImageTestCase TransparentAVIFTestCase() {
+  return ImageTestCase("transparent.avif", "image/avif", IntSize(1200, 1200),
+                       TEST_CASE_IS_TRANSPARENT);
+}
+
+ImageTestCase TransparentPNGTestCase() {
+  return ImageTestCase("transparent.png", "image/png", IntSize(32, 32),
+                       TEST_CASE_IS_TRANSPARENT);
+}
+
+ImageTestCase TransparentGIFTestCase() {
+  return ImageTestCase("transparent.gif", "image/gif", IntSize(16, 16),
+                       TEST_CASE_IS_TRANSPARENT);
+}
+
+ImageTestCase TransparentWebPTestCase() {
+  ImageTestCase test("transparent.webp", "image/webp", IntSize(100, 100),
+                     TEST_CASE_IS_TRANSPARENT);
+  test.mColor = BGRAColor::Transparent();
+  return test;
+}
+
+ImageTestCase TransparentNoAlphaHeaderWebPTestCase() {
+  ImageTestCase test("transparent-no-alpha-header.webp", "image/webp",
+                     IntSize(100, 100), TEST_CASE_IS_FUZZY);
+  test.mColor = BGRAColor(0x00, 0x00, 0x00, 0xFF);  // black
+  return test;
+}
+
+ImageTestCase FirstFramePaddingGIFTestCase() {
+  return ImageTestCase("transparent.gif", "image/gif", IntSize(16, 16),
+                       TEST_CASE_IS_TRANSPARENT);
+}
+
+ImageTestCase TransparentIfWithinICOBMPTestCase(TestCaseFlags aFlags) {
+  // This is a BMP that is only transparent when decoded as if it is within an
+  // ICO file. (Note: aFlags needs to be set to TEST_CASE_DEFAULT_FLAGS or
+  // TEST_CASE_IS_TRANSPARENT accordingly.)
+  return ImageTestCase("transparent-if-within-ico.bmp", "image/bmp",
+                       IntSize(32, 32), aFlags);
+}
+
+ImageTestCase RLE4BMPTestCase() {
+  return ImageTestCase("rle4.bmp", "image/bmp", IntSize(320, 240),
+                       TEST_CASE_IS_TRANSPARENT);
+}
+
+ImageTestCase RLE8BMPTestCase() {
+  return ImageTestCase("rle8.bmp", "image/bmp", IntSize(32, 32),
+                       TEST_CASE_IS_TRANSPARENT);
+}
+
+ImageTestCase NoFrameDelayGIFTestCase() {
+  // This is an invalid (or at least, questionably valid) GIF that's animated
+  // even though it specifies a frame delay of zero. It's animated, but it's not
+  // marked TEST_CASE_IS_ANIMATED because the metadata decoder can't detect that
+  // it's animated.
+  return ImageTestCase("no-frame-delay.gif", "image/gif", IntSize(100, 100));
+}
+
+ImageTestCase ExtraImageSubBlocksAnimatedGIFTestCase() {
+  // This is a corrupt GIF that has extra image sub blocks between the first and
+  // second frame.
+  return ImageTestCase("animated-with-extra-image-sub-blocks.gif", "image/gif",
+                       IntSize(100, 100));
+}
+
+ImageTestCase DownscaledPNGTestCase() {
+  // This testcase (and all the other "downscaled") testcases) consists of 25
+  // lines of green, followed by 25 lines of red, followed by 25 lines of green,
+  // followed by 25 more lines of red. It's intended that tests downscale it
+  // from 100x100 to 20x20, so we specify a 20x20 output size.
+  return ImageTestCase("downscaled.png", "image/png", IntSize(100, 100),
+                       IntSize(20, 20));
+}
+
+ImageTestCase DownscaledGIFTestCase() {
+  return ImageTestCase("downscaled.gif", "image/gif", IntSize(100, 100),
+                       IntSize(20, 20));
+}
+
+ImageTestCase DownscaledJPGTestCase() {
+  return ImageTestCase("downscaled.jpg", "image/jpeg", IntSize(100, 100),
+                       IntSize(20, 20));
+}
+
+ImageTestCase DownscaledBMPTestCase() {
+  return ImageTestCase("downscaled.bmp", "image/bmp", IntSize(100, 100),
+                       IntSize(20, 20));
+}
+
+ImageTestCase DownscaledICOTestCase() {
+  return ImageTestCase("downscaled.ico", "image/x-icon", IntSize(100, 100),
+                       IntSize(20, 20), TEST_CASE_IS_TRANSPARENT);
+}
+
+ImageTestCase DownscaledIconTestCase() {
+  return ImageTestCase("downscaled.icon", "image/icon", IntSize(100, 100),
+                       IntSize(20, 20), TEST_CASE_IS_TRANSPARENT);
+}
+
+ImageTestCase DownscaledWebPTestCase() {
+  return ImageTestCase("downscaled.webp", "image/webp", IntSize(100, 100),
+                       IntSize(20, 20));
+}
+
+ImageTestCase DownscaledAVIFTestCase() {
+  return ImageTestCase("downscaled.avif", "image/avif", IntSize(100, 100),
+                       IntSize(20, 20));
+}
+
+ImageTestCase DownscaledTransparentICOWithANDMaskTestCase() {
+  // This test case is an ICO with AND mask transparency. We want to ensure that
+  // we can downscale it without crashing or triggering ASAN failures, but its
+  // content isn't simple to verify, so for now we don't check the output.
+  return ImageTestCase("transparent-ico-with-and-mask.ico", "image/x-icon",
+                       IntSize(32, 32), IntSize(20, 20),
+                       TEST_CASE_IS_TRANSPARENT | TEST_CASE_IGNORE_OUTPUT);
+}
+
+ImageTestCase TruncatedSmallGIFTestCase() {
+  return ImageTestCase("green-1x1-truncated.gif", "image/gif", IntSize(1, 1),
+                       TEST_CASE_IS_TRANSPARENT);
+}
+
+ImageTestCase LargeICOWithBMPTestCase() {
+  return ImageTestCase("green-large-bmp.ico", "image/x-icon", IntSize(256, 256),
+                       TEST_CASE_IS_TRANSPARENT);
+}
+
+ImageTestCase LargeICOWithPNGTestCase() {
+  return ImageTestCase("green-large-png.ico", "image/x-icon", IntSize(512, 512),
+                       TEST_CASE_IS_TRANSPARENT);
+}
+
+ImageTestCase GreenMultipleSizesICOTestCase() {
+  return ImageTestCase("green-multiple-sizes.ico", "image/x-icon",
+                       IntSize(256, 256));
+}
+
+ImageTestCase PerfGrayJPGTestCase() {
+  return ImageTestCase("perf_gray.jpg", "image/jpeg", IntSize(1000, 1000));
+}
+
+ImageTestCase PerfCmykJPGTestCase() {
+  return ImageTestCase("perf_cmyk.jpg", "image/jpeg", IntSize(1000, 1000));
+}
+
+ImageTestCase PerfYCbCrJPGTestCase() {
+  return ImageTestCase("perf_ycbcr.jpg", "image/jpeg", IntSize(1000, 1000));
+}
+
+ImageTestCase PerfRgbPNGTestCase() {
+  return ImageTestCase("perf_srgb.png", "image/png", IntSize(1000, 1000));
+}
+
+ImageTestCase PerfRgbAlphaPNGTestCase() {
+  return ImageTestCase("perf_srgb_alpha.png", "image/png", IntSize(1000, 1000),
+                       TEST_CASE_IS_TRANSPARENT);
+}
+
+ImageTestCase PerfGrayPNGTestCase() {
+  return ImageTestCase("perf_gray.png", "image/png", IntSize(1000, 1000));
+}
+
+ImageTestCase PerfGrayAlphaPNGTestCase() {
+  return ImageTestCase("perf_gray_alpha.png", "image/png", IntSize(1000, 1000),
+                       TEST_CASE_IS_TRANSPARENT);
+}
+
+ImageTestCase PerfRgbLosslessWebPTestCase() {
+  return ImageTestCase("perf_srgb_lossless.webp", "image/webp",
+                       IntSize(1000, 1000));
+}
+
+ImageTestCase PerfRgbAlphaLosslessWebPTestCase() {
+  return ImageTestCase("perf_srgb_alpha_lossless.webp", "image/webp",
+                       IntSize(1000, 1000), TEST_CASE_IS_TRANSPARENT);
+}
+
+ImageTestCase PerfRgbLossyWebPTestCase() {
+  return ImageTestCase("perf_srgb_lossy.webp", "image/webp",
+                       IntSize(1000, 1000));
+}
+
+ImageTestCase PerfRgbAlphaLossyWebPTestCase() {
+  return ImageTestCase("perf_srgb_alpha_lossy.webp", "image/webp",
+                       IntSize(1000, 1000), TEST_CASE_IS_TRANSPARENT);
+}
+
+ImageTestCase PerfRgbGIFTestCase() {
+  return ImageTestCase("perf_srgb.gif", "image/gif", IntSize(1000, 1000));
+}
+
+#ifdef MOZ_JXL
+ImageTestCase GreenJXLTestCase() {
+  return ImageTestCase("green.jxl", "image/jxl", IntSize(100, 100));
+}
+
+ImageTestCase DownscaledJXLTestCase() {
+  return ImageTestCase("downscaled.jxl", "image/jxl", IntSize(100, 100),
+                       IntSize(20, 20));
+}
+
+ImageTestCase LargeJXLTestCase() {
+  return ImageTestCase("large.jxl", "image/jxl", IntSize(1200, 660),
+                       TEST_CASE_IGNORE_OUTPUT);
+}
+
+ImageTestCase TransparentJXLTestCase() {
+  return ImageTestCase("transparent.jxl", "image/jxl", IntSize(1200, 1200),
+                       TEST_CASE_IS_TRANSPARENT);
+}
+#endif
+
+ImageTestCase ExifResolutionTestCase() {
+  return ImageTestCase("exif_resolution.jpg", "image/jpeg", IntSize(100, 50));
+}
+
+RefPtr<Image> TestCaseToDecodedImage(const ImageTestCase& aTestCase) {
+  RefPtr<Image> image = ImageFactory::CreateAnonymousImage(
+      nsDependentCString(aTestCase.mMimeType));
+  MOZ_RELEASE_ASSERT(!image->HasError());
+
+  nsCOMPtr<nsIInputStream> inputStream = LoadFile(aTestCase.mPath);
+  MOZ_RELEASE_ASSERT(inputStream);
+
+  // Figure out how much data we have.
+  uint64_t length;
+  nsresult rv = inputStream->Available(&length);
+  MOZ_RELEASE_ASSERT(NS_SUCCEEDED(rv));
+
+  // Write the data into the image.
+  rv = image->OnImageDataAvailable(nullptr, inputStream, 0,
+                                   static_cast<uint32_t>(length));
+  MOZ_RELEASE_ASSERT(NS_SUCCEEDED(rv));
+
+  // Let the image know we've sent all the data.
+  rv = image->OnImageDataComplete(nullptr, NS_OK, true);
+  MOZ_RELEASE_ASSERT(NS_SUCCEEDED(rv));
+
+  RefPtr<ProgressTracker> tracker = image->GetProgressTracker();
+  tracker->SyncNotifyProgress(FLAG_LOAD_COMPLETE);
+
+  // Use GetFrame() to force a sync decode of the image.
+  RefPtr<SourceSurface> surface = image->GetFrame(
+      imgIContainer::FRAME_CURRENT, imgIContainer::FLAG_SYNC_DECODE);
+  Unused << surface;
+  return image;
+}
+
+}  // namespace image
+}  // namespace mozilla