#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 <xmlsec/xmldsig.h>
+#include <xmlsec/dl.h>
+#include <xmlsec/app.h>
#include "KM_util.h"
#include "KM_fileio.h"
#include "AS_DCP.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::stringstream;
using std::min;
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);
byte_t byte_buffer[20];
SHA1_Final (byte_buffer, &sha);
- stringstream s;
char digest[64];
return Kumu::base64encode (byte_buffer, 20, digest, 64);
}
assert (false);
}
-/** @param big A string.
- * @param little A string which is the same length as, or shorter than, big.
- * @return true if `big' starts with `little'.
- */
-bool
-libdcp::starts_with (string big, string little)
-{
- if (little.size() > big.size()) {
- return false;
- }
-
- return big.substr (0, little.length()) == little;
-}
-
-/** @param big A string.
- * @param little A string which is the same length as, or shorter than, big.
- * @return true if `big' ends with `little'.
- */
-bool
-libdcp::ends_with (string big, string little)
-{
- if (little.size() > big.size()) {
- return false;
- }
-
- return big.compare (big.length() - little.length(), little.length(), little) == 0;
-}
-
/** Decompress a JPEG2000 image to a bitmap.
* @param data JPEG2000 data.
* @param size Size of data in bytes.
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;
}
return true;
}
+
+void
+libdcp::init ()
+{
+ if (xmlSecInit() < 0) {
+ throw MiscError ("could not initialise xmlsec");
+ }
+}
+
+void
+libdcp::add_signature_value (xmlpp::Element* parent, CertificateChain const & certificates, string const & signer_key, string const & ns)
+{
+ parent->add_child("SignatureValue", ns);
+
+ xmlpp::Element* key_info = parent->add_child("KeyInfo", ns);
+ list<shared_ptr<Certificate> > c = certificates.leaf_to_root ();
+ for (list<shared_ptr<Certificate> >::iterator i = c.begin(); i != c.end(); ++i) {
+ xmlpp::Element* data = key_info->add_child("X509Data", ns);
+
+ {
+ xmlpp::Element* serial = data->add_child("X509IssuerSerial", ns);
+ serial->add_child("X509IssuerName", ns)->add_child_text((*i)->issuer ());
+ serial->add_child("X509SerialNumber", ns)->add_child_text((*i)->serial ());
+ }
+
+ data->add_child("X509Certificate", ns)->add_child_text((*i)->certificate());
+ }
+
+ xmlSecKeysMngrPtr keys_manager = xmlSecKeysMngrCreate();
+ if (!keys_manager) {
+ throw MiscError ("could not create keys manager");
+ }
+
+ xmlSecDSigCtx signature_context;
+
+ if (xmlSecDSigCtxInitialize (&signature_context, keys_manager) < 0) {
+ throw MiscError ("could not initialise XMLSEC context");
+ }
+
+ if (xmlSecDSigCtxSign (&signature_context, parent->cobj()) < 0) {
+ throw MiscError ("could not sign");
+ }
+
+ xmlSecDSigCtxFinalize (&signature_context);
+ xmlSecKeysMngrDestroy (keys_manager);
+}
+
+
+void
+libdcp::add_signer (xmlpp::Element* parent, CertificateChain const & certificates, string const & ns)
+{
+ xmlpp::Element* signer = parent->add_child("Signer");
+
+ {
+ xmlpp::Element* data = signer->add_child("X509Data", ns);
+
+ {
+ xmlpp::Element* serial_element = data->add_child("X509IssuerSerial", ns);
+ serial_element->add_child("X509IssuerName", ns)->add_child_text (certificates.leaf()->issuer());
+ serial_element->add_child("X509SerialNumber", ns)->add_child_text (certificates.leaf()->serial());
+ }
+
+ data->add_child("X509SubjectName", ns)->add_child_text (certificates.leaf()->subject());
+ }
+}
+
+void
+libdcp::sign (xmlpp::Element* parent, CertificateChain const & certificates, string const & signer_key)
+{
+ add_signer (parent, certificates, "dsig");
+
+ xmlpp::Element* signature = parent->add_child("Signature", "dsig");
+
+ {
+ xmlpp::Element* signed_info = signature->add_child ("SignedInfo", "dsig");
+ signed_info->add_child("CanonicalizationMethod", "dsig")->set_attribute ("Algorithm", "http://www.w3.org/TR/2001/REC-xml-c14n-20010315");
+ signed_info->add_child("SignatureMethod", "dsig")->set_attribute("Algorithm", "http://www.w3.org/2001/04/xmldsig-more#rsa-sha256");
+ {
+ xmlpp::Element* reference = signed_info->add_child("Reference", "dsig");
+ reference->set_attribute ("URI", "");
+ {
+ xmlpp::Element* transforms = reference->add_child("Transforms", "dsig");
+ transforms->add_child("Transform", "dsig")->set_attribute (
+ "Algorithm", "http://www.w3.org/2000/09/xmldsig#enveloped-signature"
+ );
+ }
+ reference->add_child("DigestMethod", "dsig")->set_attribute("Algorithm", "http://www.w3.org/2000/09/xmldsig#sha1");
+ /* This will be filled in by the signing later */
+ reference->add_child("DigestValue", "dsig");
+ }
+ }
+
+ 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);
+}
+
+/** The base64 decode routine in KM_util.cpp gives different values to both
+ * this and the command-line base64 for some inputs. Not sure why.
+ */
+int
+libdcp::base64_decode (string const & in, unsigned char* out, int out_length)
+{
+ BIO* b64 = BIO_new (BIO_f_base64 ());
+
+ /* This means the input should have no newlines */
+ BIO_set_flags (b64, BIO_FLAGS_BASE64_NO_NL);
+
+ /* Copy our input string, removing newlines */
+ char in_buffer[in.size() + 1];
+ char* p = in_buffer;
+ for (size_t i = 0; i < in.size(); ++i) {
+ if (in[i] != '\n' && in[i] != '\r') {
+ *p++ = in[i];
+ }
+ }
+
+ BIO* bmem = BIO_new_mem_buf (in_buffer, p - in_buffer);
+ bmem = BIO_push (b64, bmem);
+ int const N = BIO_read (bmem, out, out_length);
+ BIO_free_all (bmem);
+
+ return N;
+}