Method convert_to_rgb

src/postprocessing/postprocessing_utils_dcrdefs.cpp:21–109

#include "../../internal/dcraw_defs.h"

void LibRaw::convert_to_rgb()
{
  float out_cam[3][4];
  double num, inverse[3][3];
  static const double(*out_rgb[])[3] = {
      LibRaw_constants::rgb_rgb,  LibRaw_constants::adobe_rgb,
      LibRaw_constants::wide_rgb, LibRaw_constants::prophoto_rgb,
      LibRaw_constants::xyz_rgb,  LibRaw_constants::aces_rgb,
      LibRaw_constants::dcip3d65_rgb,  LibRaw_constants::rec2020_rgb};
  static const char *name[] = {"sRGB",          "Adobe RGB (1998)",
                               "WideGamut D65", "ProPhoto D65",
                               "XYZ",           "ACES",
                               "DCI-P3 D65",    "Rec. 2020"};
  static const unsigned phead[] = {
      1024, 0, 0x2100000,  0x6d6e7472, 0x52474220, 0x58595a20, 0,
      0,    0, 0x61637370, 0,          0,          0x6e6f6e65, 0,
      0,    0, 0,          0xf6d6,     0x10000,    0xd32d};
  unsigned pbody[] = {10,         0x63707274, 0,  36, /* cprt */
                      0x64657363, 0,          60,     /* desc, len is strlen(longest_string) + 12 */
                      0x77747074, 0,          20,     /* wtpt */
                      0x626b7074, 0,          20,     /* bkpt */
                      0x72545243, 0,          14,     /* rTRC */
                      0x67545243, 0,          14,     /* gTRC */
                      0x62545243, 0,          14,     /* bTRC */
                      0x7258595a, 0,          20,     /* rXYZ */
                      0x6758595a, 0,          20,     /* gXYZ */
                      0x6258595a, 0,          20};    /* bXYZ */
  static const unsigned pwhite[] = {0xf351, 0x10000, 0x116cc};
  unsigned pcurve[] = {0x63757276, 0, 1, 0x1000000};

  RUN_CALLBACK(LIBRAW_PROGRESS_CONVERT_RGB, 0, 2);

  gamma_curve(gamm[0], gamm[1], 0, 0);
  memcpy(out_cam, rgb_cam, sizeof out_cam);
  raw_color |= colors == 1 || output_color < 1 || output_color > 8;
  if (!raw_color)
  {
	size_t prof_desc_len;
	std::vector<char> prof_desc;
    int i, j, k;
    prof_desc_len = snprintf(NULL, 0, "%s gamma %g toe slope %g", name[output_color - 1],
                             floor(1000. / gamm[0] + .5) / 1000., floor(gamm[1] * 1000.0 + .5) / 1000.) +
                    1;
    prof_desc.resize(prof_desc_len);
    sprintf(prof_desc.data(), "%s gamma %g toe slope %g", name[output_color - 1], floor(1000. / gamm[0] + .5) / 1000.,
            floor(gamm[1] * 1000.0 + .5) / 1000.);

	oprof = (unsigned *)calloc(phead[0], 1);
    memcpy(oprof, phead, sizeof phead);
    if (output_color == 5)
      oprof[4] = oprof[5];
    oprof[0] = 132 + 12 * pbody[0];
    for (i = 0; i < (int)pbody[0]; i++)
    {
      oprof[oprof[0] / 4] = i ? (i > 1 ? 0x58595a20 : 0x64657363) : 0x74657874;
      pbody[i * 3 + 2] = oprof[0];
      oprof[0] += (pbody[i * 3 + 3] + 3) & -4;
    }