/*
- Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2021 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.
*/
-#include <openjpeg.h>
-#include "AS_DCP.h"
-#include "KM_fileio.h"
+
+/** @file src/mono_picture_frame.cc
+ * @brief MonoPictureFrame class
+ */
+
+
#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"
+#include "colour_conversion.h"
+#include "compose.hpp"
+#include "j2k.h"
+#include "crypto_context.h"
+#include <asdcp/KM_fileio.h>
+#include <asdcp/AS_DCP.h>
-#define DCI_GAMMA 2.6
+using std::make_shared;
using std::string;
-using boost::shared_ptr;
-using namespace libdcp;
+using std::shared_ptr;
+using boost::optional;
+using namespace dcp;
+
+
+MonoPictureFrame::MonoPictureFrame (boost::filesystem::path path)
+{
+ auto const size = boost::filesystem::file_size (path);
+ _buffer.reset(new ASDCP::JP2K::FrameBuffer(size));
+ auto f = fopen_boost (path, "rb");
+ if (!f) {
+ boost::throw_exception (FileError("could not open JPEG2000 file", path, errno));
+ }
+
+ size_t n = fread (data(), 1, size, f);
+ fclose (f);
+
+ if (n != size) {
+ boost::throw_exception (FileError("could not read from JPEG2000 file", path, errno));
+ }
+
+ _buffer->Size (size);
+}
+
/** Make a picture frame from a 2D (monoscopic) asset.
- * @param mxf_path Path to the asset's MXF file.
+ * @param reader Reader for the asset's MXF file.
* @param n Frame within the asset, not taking EntryPoint into account.
+ * @param c Context for decryption, or 0.
*/
-MonoPictureFrame::MonoPictureFrame (boost::filesystem::path mxf_path, int n, ASDCP::AESDecContext* c)
+MonoPictureFrame::MonoPictureFrame (ASDCP::JP2K::MXFReader* reader, int n, shared_ptr<DecryptionContext> c)
{
- ASDCP::JP2K::MXFReader reader;
- if (ASDCP_FAILURE (reader.OpenRead (mxf_path.string().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);
+ _buffer = make_shared<ASDCP::JP2K::FrameBuffer>(4 * Kumu::Megabyte);
- if (ASDCP_FAILURE (reader.ReadFrame (n, *_buffer, c))) {
- boost::throw_exception (DCPReadError ("could not read video frame"));
+ auto const r = reader->ReadFrame (n, *_buffer, c->context(), c->hmac());
+
+ if (ASDCP_FAILURE(r)) {
+ boost::throw_exception (ReadError(String::compose ("could not read video frame %1 (%2)", n, static_cast<int>(r))));
}
}
-MonoPictureFrame::~MonoPictureFrame ()
+
+MonoPictureFrame::MonoPictureFrame (uint8_t const * data, int size)
{
- delete _buffer;
+ _buffer = make_shared<ASDCP::JP2K::FrameBuffer>(size);
+ _buffer->Size (size);
+ memcpy (_buffer->Data(), data, size);
}
+
uint8_t const *
-MonoPictureFrame::j2k_data () const
+MonoPictureFrame::data () const
{
return _buffer->RoData ();
}
+
+uint8_t *
+MonoPictureFrame::data ()
+{
+ return _buffer->Data ();
+}
+
+
int
-MonoPictureFrame::j2k_size () const
+MonoPictureFrame::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
+
+shared_ptr<OpenJPEGImage>
+MonoPictureFrame::xyz_image (int reduce) 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)
- );
+ return decompress_j2k (const_cast<uint8_t*>(_buffer->RoData()), _buffer->Size(), reduce);
}
projects / libdcp.git / blobdiff