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LibGfx: Add first_animated_frame_index method to ImageDecoder

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Some image formats such as APNG may not use the first frame for
animations.
This commit is contained in:
Tom 2023-04-07 20:41:22 -06:00 • committed by Sam Atkins
parent 5a4c61838f
commit e7921cfe14
20 changed files with 64 additions and 4 deletions
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7
Userland/Libraries/LibGfx/ImageFormats/PortableImageMapLoader.h
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@ -71,6 +71,7 @@ public:
virtual bool is_animated() override;
virtual size_t loop_count() override;
virtual size_t frame_count() override;
virtual size_t first_animated_frame_index() override;
virtual ErrorOr<ImageFrameDescriptor> frame(size_t index) override;
virtual ErrorOr<Optional<ReadonlyBytes>> icc_data() override;
@ -160,6 +161,12 @@ size_t PortableImageDecoderPlugin<TContext>::frame_count()
return 1;
}
template<typename TContext>
size_t PortableImageDecoderPlugin<TContext>::first_animated_frame_index()
{
return 0;
}
template<typename TContext>
ErrorOr<ImageFrameDescriptor> PortableImageDecoderPlugin<TContext>::frame(size_t index)
{