Early reporting of opaqueness by decoders.

third_party/WebKit/Source/platform/image-decoders/gif/GIFImageDecoderTest.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 134 matching lines @@
     decoder->setData(data.get(), true);
     EXPECT_EQ(cAnimationLoopOnce, decoder->repetitionCount());
 
     // This call will parse the entire file.
     EXPECT_EQ(2u, decoder->frameCount());
 
     ImageFrame* frame = decoder->frameBufferAtIndex(0);
     EXPECT_EQ(ImageFrame::FrameComplete, frame->getStatus());
     EXPECT_EQ(16, frame->getSkBitmap().width());
     EXPECT_EQ(16, frame->getSkBitmap().height());
+    EXPECT_FALSE(decoder->frameHasAlphaAtIndex(0));
+    EXPECT_FALSE(decoder->frameHasAlphaAtIndex(1));
 
     frame = decoder->frameBufferAtIndex(1);
     EXPECT_EQ(ImageFrame::FrameComplete, frame->getStatus());
     EXPECT_EQ(16, frame->getSkBitmap().width());
     EXPECT_EQ(16, frame->getSkBitmap().height());
     EXPECT_EQ(cAnimationLoopInfinite, decoder->repetitionCount());
+    EXPECT_FALSE(decoder->frameHasAlphaAtIndex(0));
+    EXPECT_FALSE(decoder->frameHasAlphaAtIndex(1));
 }
 
 TEST(GIFImageDecoderTest, parseByteByByte)
 {
     OwnPtr<ImageDecoder> decoder = createDecoder();
 
     RefPtr<SharedBuffer> data = readFile(layoutTestResourcesDir, "animated.gif");
     ASSERT_TRUE(data.get());
 
     size_t frameCount = 0;
@@ skipping 150 matching lines @@
     ASSERT_TRUE(data.get());
 
     ASSERT_GE(data->size(), 10u);
     RefPtr<SharedBuffer> tempData = SharedBuffer::create(data->data(), data->size() - 10);
     decoder->setData(tempData.get(), false);
 
     EXPECT_EQ(2u, decoder->frameCount());
     EXPECT_FALSE(decoder->failed());
     EXPECT_TRUE(decoder->frameIsCompleteAtIndex(0));
     EXPECT_FALSE(decoder->frameIsCompleteAtIndex(1));
+    EXPECT_FALSE(decoder->frameHasAlphaAtIndex(0));
+    EXPECT_TRUE(decoder->frameHasAlphaAtIndex(1));
+    EXPECT_TRUE(decoder->frameHasAlphaAtIndex(2));
 
     decoder->setData(data.get(), true);
     EXPECT_EQ(2u, decoder->frameCount());
     EXPECT_TRUE(decoder->frameIsCompleteAtIndex(0));
     EXPECT_TRUE(decoder->frameIsCompleteAtIndex(1));
+    EXPECT_FALSE(decoder->frameHasAlphaAtIndex(0));
+    EXPECT_FALSE(decoder->frameHasAlphaAtIndex(1));
+    EXPECT_TRUE(decoder->frameHasAlphaAtIndex(2));
 }
 
 TEST(GIFImageDecoderTest, badTerminator)
 {
     RefPtr<SharedBuffer> referenceData = readFile(decodersTestingDir, "radient.gif");
     RefPtr<SharedBuffer> testData = readFile(decodersTestingDir, "radient-bad-terminator.gif");
     ASSERT_TRUE(referenceData.get());
     ASSERT_TRUE(testData.get());
 
     OwnPtr<ImageDecoder> referenceDecoder = createDecoder();
@@ skipping 210 matching lines @@
     ASSERT_TRUE(unpremulDecoder->frameCount());
     premulFrame = premulDecoder->frameBufferAtIndex(0);
     EXPECT_TRUE(premulFrame && premulFrame->getStatus() == ImageFrame::FrameComplete);
     EXPECT_EQ(premulFrame->bitmap().alphaType(), kOpaque_SkAlphaType);
     unpremulFrame = unpremulDecoder->frameBufferAtIndex(0);
     EXPECT_TRUE(unpremulFrame && unpremulFrame->getStatus() == ImageFrame::FrameComplete);
     EXPECT_EQ(unpremulFrame->bitmap().alphaType(), kOpaque_SkAlphaType);
 }
 
 } // namespace blink