Rename XYZImage -> OpenJPEGImage.

1 files changed, 90 insertions, 0 deletions

diff --git a/src/openjpeg_image.cc b/src/openjpeg_image.cc
new file mode 100644
index 00000000..d8bb0fcb
--- /dev/null
+++ b/src/openjpeg_image.cc
@@ -0,0 +1,90 @@
+/*
+    Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
+
+    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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+/** @file  src/openjpeg_image.cc
+ *  @brief OpenJPEGImage class.
+ */
+
+#include "openjpeg_image.h"
+#include "dcp_assert.h"
+#include <stdexcept>
+
+using namespace dcp;
+
+/** Construct an OpenJPEGImage, taking ownership of the opj_image_t */
+OpenJPEGImage::OpenJPEGImage (opj_image_t* image)
+	: _opj_image (image)
+{
+	DCP_ASSERT (_opj_image->numcomps == 3);
+}
+
+/** Construct a new OpenJPEGImage with undefined contents.
+ *  @param size Size for the frame in pixels.
+ */
+OpenJPEGImage::OpenJPEGImage (Size size)
+{
+	opj_image_cmptparm_t cmptparm[3];
+	
+	for (int i = 0; i < 3; ++i) {
+		cmptparm[i].dx = 1;
+		cmptparm[i].dy = 1;
+		cmptparm[i].w = size.width;
+		cmptparm[i].h = size.height;
+		cmptparm[i].x0 = 0;
+		cmptparm[i].y0 = 0;
+		cmptparm[i].prec = 12;
+		cmptparm[i].bpp = 12;
+		cmptparm[i].sgnd = 0;
+	}
+
+	/* XXX: is this _SRGB right? */
+	_opj_image = opj_image_create (3, &cmptparm[0], CLRSPC_SRGB);
+	if (_opj_image == 0) {
+		throw std::runtime_error ("could not create libopenjpeg image");
+	}
+
+	_opj_image->x0 = 0;
+	_opj_image->y0 = 0;
+	_opj_image->x1 = size.width;
+	_opj_image->y1 = size.height;
+}
+
+/** OpenJPEGImage destructor */
+OpenJPEGImage::~OpenJPEGImage ()
+{
+	opj_image_destroy (_opj_image);
+}
+
+/** @param c Component index (0, 1 or 2)
+ *  @return Pointer to the data for component c.
+ */
+int *
+OpenJPEGImage::data (int c) const
+{
+	DCP_ASSERT (c >= 0 && c < 3);
+	return _opj_image->comps[c].data;
+}
+
+/** @return Size of the image in pixels */
+dcp::Size
+OpenJPEGImage::size () const
+{
+	/* XXX: this may not be right; x0 and y0 can presumably be non-zero */
+	return dcp::Size (_opj_image->x1, _opj_image->y1);
+}