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LibGfx: Implement is_animated() and frame_count() for webp plugin

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This commit is contained in:
Nico Weber 2023-02-25 22:15:34 -05:00 • committed by Linus Groh
parent 0393a37843
commit 3c5450b8be
2 changed files with 22 additions and 7 deletions
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7
Tests/LibGfx/TestImageDecoder.cpp
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@ -284,9 +284,10 @@ TEST_CASE(test_webp_extended_lossless_animated)
auto plugin_decoder = MUST(Gfx::WebPImageDecoderPlugin::create(file->bytes())); auto plugin_decoder = MUST(Gfx::WebPImageDecoderPlugin::create(file->bytes()));
EXPECT(plugin_decoder->initialize()); EXPECT(plugin_decoder->initialize());
// FIXME: These three lines are wrong. EXPECT_EQ(plugin_decoder->frame_count(), 8u);
EXPECT_EQ(plugin_decoder->frame_count(), 1u); EXPECT(plugin_decoder->is_animated());
EXPECT(!plugin_decoder->is_animated());
// FIXME: This is wrong.
EXPECT(!plugin_decoder->loop_count()); EXPECT(!plugin_decoder->loop_count());
EXPECT_EQ(plugin_decoder->size(), Gfx::IntSize(990, 1050)); EXPECT_EQ(plugin_decoder->size(), Gfx::IntSize(990, 1050));

22
Userland/Libraries/LibGfx/WebPLoader.cpp
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@ -519,8 +519,15 @@ ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> WebPImageDecoderPlugin::create(Readon
bool WebPImageDecoderPlugin::is_animated() bool WebPImageDecoderPlugin::is_animated()
{ {
// FIXME if (m_context->state == WebPLoadingContext::State::Error)
return false; return false;
if (m_context->state < WebPLoadingContext::State::FirstChunkDecoded) {
if (decode_webp_first_chunk(*m_context).is_error())
return false;
}
return m_context->first_chunk->type == FourCC("VP8X") && m_context->vp8x_header.has_animation;
} }
size_t WebPImageDecoderPlugin::loop_count() size_t WebPImageDecoderPlugin::loop_count()
@ -531,8 +538,15 @@ size_t WebPImageDecoderPlugin::loop_count()
size_t WebPImageDecoderPlugin::frame_count() size_t WebPImageDecoderPlugin::frame_count()
{ {
// FIXME if (!is_animated())
return 1; return 1;
if (m_context->state < WebPLoadingContext::State::ChunksDecoded) {
if (decode_webp_chunks(*m_context).is_error())
return 1;
}
return m_context->animation_frame_chunks.size();
} }
ErrorOr<ImageFrameDescriptor> WebPImageDecoderPlugin::frame(size_t index) ErrorOr<ImageFrameDescriptor> WebPImageDecoderPlugin::frame(size_t index)