Split up some files.

1 files changed, 89 insertions, 0 deletions

diff --git a/src/mono_picture_frame.cc b/src/mono_picture_frame.cc
new file mode 100644
index 00000000..474b0715
--- /dev/null
+++ b/src/mono_picture_frame.cc
@@ -0,0 +1,89 @@
+/*
+    Copyright (C) 2012 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.
+
+*/
+
+#include <openjpeg.h>
+#include "AS_DCP.h"
+#include "KM_fileio.h"
+#include "mono_picture_frame.h"
+#include "exceptions.h"
+#include "argb_frame.h"
+#include "lut.h"
+#include "util.h"
+#include "gamma_lut.h"
+#include "rgb_xyz.h"
+
+#define DCI_GAMMA 2.6
+
+using std::string;
+using boost::shared_ptr;
+using namespace libdcp;
+
+/** Make a picture frame from a 2D (monoscopic) asset.
+ *  @param mxf_path Path to the asset's MXF file.
+ *  @param n Frame within the asset, not taking EntryPoint into account.
+ */
+MonoPictureFrame::MonoPictureFrame (string mxf_path, int n, ASDCP::AESDecContext* c)
+{
+	ASDCP::JP2K::MXFReader reader;
+	if (ASDCP_FAILURE (reader.OpenRead (mxf_path.c_str()))) {
+		boost::throw_exception (FileError ("could not open MXF file for reading", mxf_path));
+	}
+
+	/* XXX: unfortunate guesswork on this buffer size */
+	_buffer = new ASDCP::JP2K::FrameBuffer (4 * Kumu::Megabyte);
+
+	if (ASDCP_FAILURE (reader.ReadFrame (n, *_buffer, c))) {
+		boost::throw_exception (DCPReadError ("could not read video frame"));
+	}
+}
+
+MonoPictureFrame::~MonoPictureFrame ()
+{
+	delete _buffer;
+}
+
+uint8_t const *
+MonoPictureFrame::j2k_data () const
+{
+	return _buffer->RoData ();
+}
+
+int
+MonoPictureFrame::j2k_size () const
+{
+	return _buffer->Size ();
+}
+
+/** @param reduce a factor by which to reduce the resolution
+ *  of the image, expressed as a power of two (pass 0 for no
+ *  reduction).
+ *
+ *  @return An ARGB representation of this frame.  This is ARGB in the
+ *  Cairo sense, so that each pixel takes up 4 bytes; the first byte
+ *  is blue, second green, third red and fourth alpha (always 255).
+ *
+ */
+shared_ptr<ARGBFrame>
+MonoPictureFrame::argb_frame (int reduce, float srgb_gamma) const
+{
+	return xyz_to_rgb (
+		decompress_j2k (const_cast<uint8_t*> (_buffer->RoData()), _buffer->Size(), reduce),
+		GammaLUT::cache.get (12, DCI_GAMMA), GammaLUT::cache.get (12, 1 / srgb_gamma)
+		);
+}