LibGfx: Add PGM image file type support

1 files changed, 61 insertions, 0 deletions

diff --git a/Libraries/LibGfx/PGMLoader.h b/Libraries/LibGfx/PGMLoader.h
new file mode 100644
index 0000000000..ae6afcebaf
--- /dev/null
+++ b/Libraries/LibGfx/PGMLoader.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2020, Hüseyin ASLITÜRK <asliturk@hotmail.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <LibGfx/Bitmap.h>
+#include <LibGfx/ImageDecoder.h>
+
+namespace Gfx {
+
+RefPtr<Gfx::Bitmap> load_pgm(const StringView& path);
+RefPtr<Gfx::Bitmap> load_pgm_from_memory(const u8*, size_t);
+
+struct PGMLoadingContext;
+
+class PGMImageDecoderPlugin final : public ImageDecoderPlugin {
+public:
+    PGMImageDecoderPlugin(const u8*, size_t);
+    virtual ~PGMImageDecoderPlugin() override;
+
+    virtual IntSize size() override;
+    virtual RefPtr<Gfx::Bitmap> bitmap() override;
+
+    virtual void set_volatile() override;
+    [[nodiscard]] virtual bool set_nonvolatile() override;
+
+    virtual bool sniff() override;
+
+    virtual bool is_animated() override;
+    virtual size_t loop_count() override;
+    virtual size_t frame_count() override;
+    virtual ImageFrameDescriptor frame(size_t i) override;
+
+private:
+    OwnPtr<PGMLoadingContext> m_context;
+};
+
+}