IMAGE: Move all ImageDecoders to image/

1 files changed, 95 insertions, 0 deletions

diff --git a/image/jpeg.h b/image/jpeg.h
new file mode 100644
index 0000000000..f578170517
--- /dev/null
+++ b/image/jpeg.h
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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+/**
+ * @file
+ * Image decoder used in engines:
+ *  - groovie
+ *  - mohawk
+ *  - wintermute
+ */
+
+#ifndef IMAGE_JPEG_H
+#define IMAGE_JPEG_H
+
+#include "graphics/surface.h"
+#include "image/image_decoder.h"
+
+namespace Common {
+class SeekableReadStream;
+}
+
+namespace Image {
+
+class JPEGDecoder : public ImageDecoder {
+public:
+	JPEGDecoder();
+	~JPEGDecoder();
+
+	// ImageDecoder API
+	virtual void destroy();
+	virtual bool loadStream(Common::SeekableReadStream &str);
+	virtual const Graphics::Surface *getSurface() const;
+
+	// Special API for JPEG
+	enum ColorSpace {
+		/**
+		 * Output 32bit RGBA data.
+		 *
+		 * This is the default output.
+		 */
+		kColorSpaceRGBA,
+
+		/**
+		 * Output (interleaved) YUV data.
+		 *
+		 * Be aware that some images cannot be output in YUV mode.
+		 * These are (non-standard) JPEG images which are in RGB colorspace.
+		 *
+		 * The resulting Surface will have a PixelFormat with 3 bytes per
+		 * pixel and the remaining entries are completely zeroed. This works
+		 * around the fact that PixelFormat can only describe RGB formats.
+		 *
+		 * You should only use this when you are really aware of what you are
+		 * doing!
+		 */
+		kColorSpaceYUV
+	};
+
+	/**
+	 * Request the output color space. This can be used to obtain raw YUV
+	 * data from the JPEG file. But this might not work for all files!
+	 *
+	 * The decoder itself defaults to RGBA.
+	 *
+	 * @param outSpace The color space to output.
+	 */
+	void setOutputColorSpace(ColorSpace outSpace) { _colorSpace = outSpace; }
+
+private:
+	Graphics::Surface _surface;
+	ColorSpace _colorSpace;
+};
+
+} // End of Graphics namespace
+
+#endif // GRAPHICS_JPEG_H