#include <iostream>
#include <iomanip>
#include <boost/filesystem.hpp>
+#include <boost/lexical_cast.hpp>
#include <openssl/sha.h>
#include <libxml++/nodes/element.h>
#include <libxml++/document.h>
#include "exceptions.h"
#include "types.h"
#include "argb_frame.h"
-#include "lut.h"
#include "certificates.h"
+#include "gamma_lut.h"
using std::string;
using std::cout;
using std::max;
using std::list;
using boost::shared_ptr;
+using boost::lexical_cast;
using namespace libdcp;
/** Create a UUID.
{
Kumu::FileReader reader;
if (ASDCP_FAILURE (reader.OpenRead (filename.c_str ()))) {
- throw FileError ("could not open file to compute digest", filename);
+ boost::throw_exception (FileError ("could not open file to compute digest", filename));
}
SHA_CTX sha;
if (r == Kumu::RESULT_ENDOFFILE) {
break;
} else if (ASDCP_FAILURE (r)) {
- throw FileError ("could not read file to compute digest", filename);
+ boost::throw_exception (FileError ("could not read file to compute digest", filename));
}
SHA1_Update (&sha, read_buffer.Data(), read);
if (!image) {
opj_destroy_decompress (decoder);
opj_cio_close (cio);
- throw DCPReadError ("could not decode JPEG2000 codestream");
+ boost::throw_exception (DCPReadError ("could not decode JPEG2000 codestream of " + lexical_cast<string> (size) + " bytes."));
}
opj_cio_close (cio);
* @return RGB image.
*/
shared_ptr<ARGBFrame>
-libdcp::xyz_to_rgb (opj_image_t* xyz_frame)
+libdcp::xyz_to_rgb (opj_image_t* xyz_frame, shared_ptr<const GammaLUT> lut_in, shared_ptr<const GammaLUT> lut_out)
{
+ float const dci_coefficient = 48.0 / 52.37;
+
+ /* sRGB color matrix for XYZ -> RGB. This is the same as the one used by the Fraunhofer
+ EasyDCP player, I think.
+ */
+
+ float const colour_matrix[3][3] = {
+ { 3.24096989631653, -1.5373831987381, -0.498610764741898 },
+ { -0.96924364566803, 1.87596750259399, 0.0415550582110882 },
+ { 0.0556300804018974, -0.203976958990097, 1.05697154998779 }
+ };
+
+ int const max_colour = pow (2, lut_out->bit_depth()) - 1;
+
struct {
double x, y, z;
} s;
int* xyz_y = xyz_frame->comps[1].data;
int* xyz_z = xyz_frame->comps[2].data;
- shared_ptr<ARGBFrame> argb_frame (new ARGBFrame (xyz_frame->x1, xyz_frame->y1));
+ shared_ptr<ARGBFrame> argb_frame (new ARGBFrame (Size (xyz_frame->x1, xyz_frame->y1)));
uint8_t* argb = argb_frame->data ();
assert (*xyz_x >= 0 && *xyz_y >= 0 && *xyz_z >= 0 && *xyz_x < 4096 && *xyz_x < 4096 && *xyz_z < 4096);
/* In gamma LUT */
- s.x = lut_in[*xyz_x++];
- s.y = lut_in[*xyz_y++];
- s.z = lut_in[*xyz_z++];
-
+ s.x = lut_in->lut()[*xyz_x++];
+ s.y = lut_in->lut()[*xyz_y++];
+ s.z = lut_in->lut()[*xyz_z++];
+
/* DCI companding */
- s.x /= DCI_COEFFICIENT;
- s.y /= DCI_COEFFICIENT;
- s.z /= DCI_COEFFICIENT;
+ s.x /= dci_coefficient;
+ s.y /= dci_coefficient;
+ s.z /= dci_coefficient;
/* XYZ to RGB */
- d.r = ((s.x * color_matrix[0][0]) + (s.y * color_matrix[0][1]) + (s.z * color_matrix[0][2]));
- d.g = ((s.x * color_matrix[1][0]) + (s.y * color_matrix[1][1]) + (s.z * color_matrix[1][2]));
- d.b = ((s.x * color_matrix[2][0]) + (s.y * color_matrix[2][1]) + (s.z * color_matrix[2][2]));
+ d.r = ((s.x * colour_matrix[0][0]) + (s.y * colour_matrix[0][1]) + (s.z * colour_matrix[0][2]));
+ d.g = ((s.x * colour_matrix[1][0]) + (s.y * colour_matrix[1][1]) + (s.z * colour_matrix[1][2]));
+ d.b = ((s.x * colour_matrix[2][0]) + (s.y * colour_matrix[2][1]) + (s.z * colour_matrix[2][2]));
d.r = min (d.r, 1.0);
d.r = max (d.r, 0.0);
d.b = max (d.b, 0.0);
/* Out gamma LUT */
- *argb_line++ = lut_out[(int) (d.b * COLOR_DEPTH)];
- *argb_line++ = lut_out[(int) (d.g * COLOR_DEPTH)];
- *argb_line++ = lut_out[(int) (d.r * COLOR_DEPTH)];
+ *argb_line++ = lut_out->lut()[(int) (d.b * max_colour)] * 0xff;
+ *argb_line++ = lut_out->lut()[(int) (d.g * max_colour)] * 0xff;
+ *argb_line++ = lut_out->lut()[(int) (d.r * max_colour)] * 0xff;
*argb_line++ = 0xff;
}
add_signature_value (signature, certificates, signer_key, "dsig");
}
+bool libdcp::operator== (libdcp::Size const & a, libdcp::Size const & b)
+{
+ return (a.width == b.width && a.height == b.height);
+}
+
+bool libdcp::operator!= (libdcp::Size const & a, libdcp::Size const & b)
+{
+ return !(a == b);
+}
+