GIFLoader.h 947 B

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  1. /*
  2. * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
  3. *
  4. * SPDX-License-Identifier: BSD-2-Clause
  5. */
  6. #pragma once
  7. #include <AK/MemoryStream.h>
  8. #include <LibGfx/Bitmap.h>
  9. #include <LibGfx/ImageFormats/ImageDecoder.h>
  10. namespace Gfx {
  11. struct GIFLoadingContext;
  12. class GIFImageDecoderPlugin final : public ImageDecoderPlugin {
  13. public:
  14. static bool sniff(ReadonlyBytes);
  15. static ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> create(ReadonlyBytes);
  16. virtual ~GIFImageDecoderPlugin() override;
  17. virtual IntSize size() override;
  18. virtual bool is_animated() override;
  19. virtual size_t loop_count() override;
  20. virtual size_t frame_count() override;
  21. virtual size_t first_animated_frame_index() override;
  22. virtual ErrorOr<ImageFrameDescriptor> frame(size_t index, Optional<IntSize> ideal_size = {}) override;
  23. private:
  24. GIFImageDecoderPlugin(FixedMemoryStream);
  25. OwnPtr<GIFLoadingContext> m_context;
  26. };
  27. }