*/
+/** @file src/util.cc
+ * @brief Utility methods.
+ */
+
#include <stdexcept>
#include <sstream>
+#include <iostream>
#include <iomanip>
+#include <boost/filesystem.hpp>
#include <openssl/sha.h>
#include "KM_util.h"
#include "KM_fileio.h"
#include "AS_DCP.h"
#include "util.h"
+#include "exceptions.h"
+#include "types.h"
+#include "argb_frame.h"
+#include "lut.h"
-using namespace std;
+using std::string;
+using std::stringstream;
+using std::min;
+using std::max;
+using boost::shared_ptr;
+using namespace libdcp;
-bool libdcp::libdcp_test = false;
-
-/** Create a UUID.
- * @return UUID.
- */
string
libdcp::make_uuid ()
{
char buffer[64];
Kumu::UUID id;
-
- if (libdcp_test) {
- static int N = 0;
- byte_t t[16];
- for (int i = 0; i < 16; ++i) {
- t[i] = N;
- }
- ++N;
-
- id = Kumu::UUID (t);
- } else {
- Kumu::GenRandomValue (id);
- }
-
+ Kumu::GenRandomValue (id);
id.EncodeHex (buffer, 64);
return string (buffer);
}
-/** Create a digest for a file.
- * @param filename File name.
- * @return Digest.
- */
string
-libdcp::make_digest (string filename)
+libdcp::make_digest (string filename, boost::signals2::signal<void (float)>* progress)
{
+ int const file_size = boost::filesystem::file_size (filename);
+
Kumu::FileReader reader;
if (ASDCP_FAILURE (reader.OpenRead (filename.c_str ()))) {
- throw runtime_error ("could not open file to compute digest");
+ throw FileError ("could not open file to compute digest", filename);
}
SHA_CTX sha;
SHA1_Init (&sha);
Kumu::ByteString read_buffer (65536);
+ int done = 0;
while (1) {
ui32_t read = 0;
Kumu::Result_t r = reader.Read (read_buffer.Data(), read_buffer.Capacity(), &read);
if (r == Kumu::RESULT_ENDOFFILE) {
break;
} else if (ASDCP_FAILURE (r)) {
- throw runtime_error ("could not read file to compute digest");
+ throw FileError ("could not read file to compute digest", filename);
}
SHA1_Update (&sha, read_buffer.Data(), read);
+ done += read;
+
+ if (progress) {
+ (*progress) (0.5 + (0.5 * done / file_size));
+ }
}
byte_t byte_buffer[20];
stringstream s;
char digest[64];
- s << setfill('0') << setw(36) << Kumu::base64encode (byte_buffer, 20, digest, 64);
- return s.str ();
+ return Kumu::base64encode (byte_buffer, 20, digest, 64);
+}
+
+string
+libdcp::content_kind_to_string (ContentKind kind)
+{
+ switch (kind) {
+ case FEATURE:
+ return "feature";
+ case SHORT:
+ return "short";
+ case TRAILER:
+ return "trailer";
+ case TEST:
+ return "test";
+ case TRANSITIONAL:
+ return "transitional";
+ case RATING:
+ return "rating";
+ case TEASER:
+ return "teaser";
+ case POLICY:
+ return "policy";
+ case PUBLIC_SERVICE_ANNOUNCEMENT:
+ return "psa";
+ case ADVERTISEMENT:
+ return "advertisement";
+ }
+
+ assert (false);
+}
+
+libdcp::ContentKind
+libdcp::content_kind_from_string (string type)
+{
+ if (type == "feature") {
+ return FEATURE;
+ } else if (type == "short") {
+ return SHORT;
+ } else if (type == "trailer" || type == "Trailer") {
+ return TRAILER;
+ } else if (type == "test") {
+ return TEST;
+ } else if (type == "transitional") {
+ return TRANSITIONAL;
+ } else if (type == "rating") {
+ return RATING;
+ } else if (type == "teaser" || type == "Teaser") {
+ return TEASER;
+ } else if (type == "policy") {
+ return POLICY;
+ } else if (type == "psa") {
+ return PUBLIC_SERVICE_ANNOUNCEMENT;
+ } else if (type == "advertisement") {
+ return ADVERTISEMENT;
+ }
+
+ assert (false);
+}
+
+bool
+libdcp::starts_with (string big, string little)
+{
+ if (little.size() > big.size()) {
+ return false;
+ }
+
+ return big.substr (0, little.length()) == 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;
+}
+
+opj_image_t *
+libdcp::decompress_j2k (uint8_t* data, int64_t size, int reduce)
+{
+ opj_dinfo_t* decoder = opj_create_decompress (CODEC_J2K);
+ opj_dparameters_t parameters;
+ opj_set_default_decoder_parameters (¶meters);
+ parameters.cp_reduce = reduce;
+ opj_setup_decoder (decoder, ¶meters);
+ opj_cio_t* cio = opj_cio_open ((opj_common_ptr) decoder, data, size);
+ opj_image_t* image = opj_decode (decoder, cio);
+ if (!image) {
+ opj_destroy_decompress (decoder);
+ opj_cio_close (cio);
+ throw DCPReadError ("could not decode JPEG2000 codestream");
+ }
+
+ opj_cio_close (cio);
+
+ image->x1 = rint (float(image->x1) / pow (2, reduce));
+ image->y1 = rint (float(image->y1) / pow (2, reduce));
+ return image;
+}
+
+shared_ptr<ARGBFrame>
+libdcp::xyz_to_rgb (opj_image_t* xyz_frame)
+{
+ struct {
+ double x, y, z;
+ } s;
+
+ struct {
+ double r, g, b;
+ } d;
+
+ int* xyz_x = xyz_frame->comps[0].data;
+ 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));
+
+ uint8_t* argb = argb_frame->data ();
+
+ for (int y = 0; y < xyz_frame->y1; ++y) {
+ uint8_t* argb_line = argb;
+ for (int x = 0; x < xyz_frame->x1; ++x) {
+
+ 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++];
+
+ /* DCI companding */
+ 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 = min (d.r, 1.0);
+ d.r = max (d.r, 0.0);
+
+ d.g = min (d.g, 1.0);
+ d.g = max (d.g, 0.0);
+
+ d.b = min (d.b, 1.0);
+ 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++ = 0xff;
+ }
+
+ argb += argb_frame->stride ();
+ }
+
+ return argb_frame;
+}
+
+bool
+libdcp::empty_or_white_space (string s)
+{
+ for (size_t i = 0; i < s.length(); ++i) {
+ if (s[i] != ' ' && s[i] != '\n' && s[i] != '\t') {
+ return false;
+ }
+ }
+
+ return true;
}
projects / libdcp.git / blobdiff