LibGfx: Move all image loaders and writers to a subdirectory

Userland/Libraries/LibGfx/ImageFormats/ImageDecoder.h

@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/ByteBuffer.h>
+#include <AK/OwnPtr.h>
+#include <AK/RefCounted.h>
+#include <AK/RefPtr.h>
+#include <LibGfx/Bitmap.h>
+#include <LibGfx/Size.h>
+
+namespace Gfx {
+
+class Bitmap;
+
+static constexpr size_t maximum_width_for_decoded_images = 16384;
+static constexpr size_t maximum_height_for_decoded_images = 16384;
+
+struct ImageFrameDescriptor {
+    RefPtr<Bitmap> image;
+    int duration { 0 };
+};
+
+class ImageDecoderPlugin {
+public:
+    virtual ~ImageDecoderPlugin() = default;
+
+    virtual IntSize size() = 0;
+
+    virtual void set_volatile() = 0;
+    [[nodiscard]] virtual bool set_nonvolatile(bool& was_purged) = 0;
+
+    virtual bool initialize() = 0;
+
+    virtual bool is_animated() = 0;
+    virtual size_t loop_count() = 0;
+    virtual size_t frame_count() = 0;
+    virtual ErrorOr<ImageFrameDescriptor> frame(size_t index) = 0;
+    virtual ErrorOr<Optional<ReadonlyBytes>> icc_data() = 0;
+
+protected:
+    ImageDecoderPlugin() = default;
+};
+
+class ImageDecoder : public RefCounted<ImageDecoder> {
+public:
+    static RefPtr<ImageDecoder> try_create_for_raw_bytes(ReadonlyBytes, Optional<DeprecatedString> mime_type = {});
+    ~ImageDecoder() = default;
+
+    IntSize size() const { return m_plugin->size(); }
+    int width() const { return size().width(); }
+    int height() const { return size().height(); }
+    void set_volatile() { m_plugin->set_volatile(); }
+    [[nodiscard]] bool set_nonvolatile(bool& was_purged) { return m_plugin->set_nonvolatile(was_purged); }
+    bool is_animated() const { return m_plugin->is_animated(); }
+    size_t loop_count() const { return m_plugin->loop_count(); }
+    size_t frame_count() const { return m_plugin->frame_count(); }
+    ErrorOr<ImageFrameDescriptor> frame(size_t index) const { return m_plugin->frame(index); }
+    ErrorOr<Optional<ReadonlyBytes>> icc_data() const { return m_plugin->icc_data(); }
+
+private:
+    explicit ImageDecoder(NonnullOwnPtr<ImageDecoderPlugin>);
+
+    NonnullOwnPtr<ImageDecoderPlugin> mutable m_plugin;
+};
+
+}