/*
- Copyright (C) 2013-2014 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2013-2021 Carl Hetherington <cth@carlh.net>
- This program is free software; you can redistribute it and/or modify
+ This file is part of libdcp.
+
+ libdcp 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,
+ libdcp 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with libdcp. If not, see <http://www.gnu.org/licenses/>.
+
+ In addition, as a special exception, the copyright holders give
+ permission to link the code of portions of this program with the
+ OpenSSL library under certain conditions as described in each
+ individual source file, and distribute linked combinations
+ including the two.
+ You must obey the GNU General Public License in all respects
+ for all of the code used other than OpenSSL. If you modify
+ file(s) with this exception, you may extend this exception to your
+ version of the file(s), but you are not obligated to do so. If you
+ do not wish to do so, delete this exception statement from your
+ version. If you delete this exception statement from all source
+ files in the program, then also delete it here.
*/
+
+/** @file rgb_xyz.h
+ * @brief Conversion between RGB and XYZ
+ */
+
+
#include "types.h"
-#include <boost/shared_ptr.hpp>
+#include <memory>
#include <boost/optional.hpp>
#include <stdint.h>
+
namespace dcp {
-class ARGBFrame;
-class XYZFrame;
+
+class OpenJPEGImage;
class Image;
class ColourConversion;
-
-extern boost::shared_ptr<ARGBFrame> xyz_to_rgba (boost::shared_ptr<const XYZFrame>, ColourConversion const & conversion);
+
+
+/** Convert an XYZ image to RGBA.
+ * @param xyz_image Image in XYZ.
+ * @param conversion Colour conversion to use.
+ * @param argb Buffer to fill with RGBA data. The format of the data is:
+ *
+ * <pre>
+ * Byte /- 0 -------|- 1 --------|- 2 --------|- 3 --------|- 4 --------|- 5 --------| ...
+ * |(0, 0) Blue|(0, 0)Green |(0, 0) Red |(0, 0) Alpha|(0, 1) Blue |(0, 1) Green| ...
+ * </pre>
+ *
+ * So that the first byte is the blue component of the pixel at x=0, y=0, the second
+ * is the green component, and so on.
+ *
+ * Lines are packed so that the second row directly follows the first.
+ */
+extern void xyz_to_rgba (
+ std::shared_ptr<const OpenJPEGImage>,
+ ColourConversion const & conversion,
+ uint8_t* rgba,
+ int stride
+ );
+
+
+/** Convert an XYZ image to 48bpp RGB.
+ * @param xyz_image Frame in XYZ.
+ * @param conversion Colour conversion to use.
+ * @param rgb Buffer to fill with RGB data. Format is packed RGB
+ * 16:16:16, 48bpp, 16R, 16G, 16B, with the 2-byte value for each
+ * R/G/B component stored as little-endian; i.e. AV_PIX_FMT_RGB48LE.
+ * @param stride Stride for RGB data in bytes.
+ * @param note Optional handler for any notes that may be made during the conversion (e.g. when clamping occurs).
+ */
extern void xyz_to_rgb (
- boost::shared_ptr<const XYZFrame>,
+ std::shared_ptr<const OpenJPEGImage>,
+ ColourConversion const & conversion,
+ uint8_t* rgb,
+ int stride,
+ boost::optional<NoteHandler> note = boost::optional<NoteHandler> ()
+ );
+
+
+/** @param rgb RGB data; packed RGB 16:16:16, 48bpp, 16R, 16G, 16B,
+ * with the 2-byte value for each R/G/B component stored as
+ * little-endian; i.e. AV_PIX_FMT_RGB48LE.
+ * @param size size of RGB image in pixels.
+ * @param size stride of RGB data in pixels.
+ */
+extern std::shared_ptr<OpenJPEGImage> rgb_to_xyz (
+ uint8_t const * rgb,
+ dcp::Size size,
+ int stride,
ColourConversion const & conversion,
- boost::shared_ptr<Image> rgb,
boost::optional<NoteHandler> note = boost::optional<NoteHandler> ()
);
-extern boost::shared_ptr<XYZFrame> rgb_to_xyz (boost::shared_ptr<const Image>, ColourConversion const & conversion);
-extern boost::shared_ptr<XYZFrame> xyz_to_xyz (boost::shared_ptr<const Image>);
-
+
+
+/** @param conversion Colour conversion.
+ * @param matrix Filled in with the product of the RGB to XYZ matrix, the Bradford transform and the DCI companding.
+ */
+extern void combined_rgb_to_xyz (ColourConversion const & conversion, double* matrix);
+
}
projects / libdcp.git / blobdiff