/**
 *  @internal
 *  Function: oyColorConvert_
 *  @memberof oyNamedColor_s
 *  @brief   convert colors
 *
 *  The options are passed to oyConversion_CreateBasicPixels();
 *  The function does the lookups for the profiles and the modules contexts
 *  in the Oyranos cache on the fly. The allocated oyImage_s and
 *  oyConversion_s structures are not cheap as they are not cached.
 *
 *  @version Oyranos: 0.1.11
 *  @since   2007/12/23 (Oyranos: 0.1.8)
 *  @date    2010/09/10
 */
int  oyColorConvert_  ( oyProfile_s       * p_in,
                        oyProfile_s       * p_out,
                        oyPointer           buf_in,
                        oyPointer           buf_out,
                        oyDATATYPE_e        buf_type_in,
                        oyDATATYPE_e        buf_type_out,
                        oyOptions_s       * options,
                        int                 count )
{
  oyImage_s * in  = NULL,
            * out = NULL;
  oyConversion_s * conv = NULL;
  int error = 0;

  in    = oyImage_Create( count, 1,
                         buf_in ,
                         oyChannels_m(oyProfile_GetChannelsCount(p_in)) |
                          oyDataType_m(buf_type_in),
                         p_in,
                         0 );
  out   = oyImage_Create( count, 1,
                         buf_out ,
                         oyChannels_m(oyProfile_GetChannelsCount(p_out)) |
                          oyDataType_m(buf_type_out),
                         p_out,
                         0 );

  conv   = oyConversion_CreateBasicPixels( in,out, options, 0 );
  error  = oyConversion_RunPixels( conv, 0 );

  oyConversion_Release( &conv );
  oyImage_Release( &in );
  oyImage_Release( &out );

  return error;
}
/** @brief  create_profile.white_point_adjust.bradford
 *
 *  The profile will be generated in many different shades, which will explode
 *  conversion cache.
 */
int      oyProfileAddWhitePointEffect( oyProfile_s       * monitor_profile,
                                       oyOptions_s      ** module_options )
{
  oyProfile_s * wtpt = NULL;
  double        src_XYZ[3] = {0.0, 0.0, 0.0}, dst_XYZ[3] = {0.0, 0.0, 0.0},
                scale = 1.0;
  int error = oyProfile_GetWhitePoint( monitor_profile, src_XYZ );
  int32_t display_white_point = oyGetBehaviour( oyBEHAVIOUR_DISPLAY_WHITE_POINT );
  oyOptions_s * result_opts = NULL, * opts = NULL;
  const char * desc = NULL;

  if(*module_options)
  {
    const char * value = oyOptions_FindString( *module_options, "display_white_point", 0 );
    if(value)
    {
      int c = atoi( value );
      if(c >= 0)
        display_white_point = c;
    }
  }

  if(!display_white_point)
    return 0;

  if(!error)
    error = oyGetDisplayWhitePoint( display_white_point, dst_XYZ );
  if(isnan(dst_XYZ[0]))
    error = 1;
  if(error)
  {
    oyMessageFunc_p( oyMSG_WARN,(oyStruct_s*)monitor_profile, OY_DBG_FORMAT_
                   "automatic display_white_point: not readable", OY_DBG_ARGS_);
    return error;
  }

  desc = oyProfile_GetText( monitor_profile, oyNAME_DESCRIPTION );

  error = oyOptions_SetFromString( &opts, "//" OY_TYPE_STD "/src_name", desc, OY_CREATE_NEW );
  if(error)
    return error;
  DBG_S_( oyPrintTime() );
  {
    int current = -1, choices = 0;
    const char ** choices_string_list = NULL;
    uint32_t flags = 0;
#ifdef HAVE_LOCALE_H
    char * old_loc = strdup(setlocale(LC_ALL,NULL));
    setlocale(LC_ALL,"C");
#endif
    error = oyOptionChoicesGet2( oyWIDGET_DISPLAY_WHITE_POINT, flags,
                                 oyNAME_NAME, &choices,
                                 &choices_string_list, &current );
    if(error > 0)
      oyMessageFunc_p( oyMSG_WARN,(oyStruct_s*)monitor_profile, OY_DBG_FORMAT_
                   "oyOptionChoicesGet2 failed %d", OY_DBG_ARGS_,
                   error);
#ifdef HAVE_LOCALE_H
    setlocale(LC_ALL,old_loc);
    if(old_loc) { free(old_loc); } old_loc = NULL;
#endif
    if(current > 0 && current < choices && choices_string_list)
    {
      if(current == 1) /* automatic */
      {
        double temperature = oyGetTemperature(-1);
        char k[12];
        sprintf(k, "%dK", (int)temperature);
        oyOptions_SetFromString( &opts, "//" OY_TYPE_STD "/illu_name", k, OY_CREATE_NEW );
        if(temperature <= 0.1)
          oyMessageFunc_p( oyMSG_WARN,(oyStruct_s*)monitor_profile, OY_DBG_FORMAT_
                   "automatic display_white_point: [%g %g %g] %s", OY_DBG_ARGS_,
                   dst_XYZ[0], dst_XYZ[1], dst_XYZ[2], k);
      }
      else
        oyOptions_SetFromString( &opts, "//" OY_TYPE_STD "/illu_name", choices_string_list[current], OY_CREATE_NEW );
      if(oy_debug)
        oyMessageFunc_p( oyMSG_DBG,(oyStruct_s*)monitor_profile, OY_DBG_FORMAT_
                   "illu_name: %s", OY_DBG_ARGS_,
                   oyOptions_FindString( opts, "illu_name", 0) );
    }
    oyOptionChoicesFree( oyWIDGET_DISPLAY_WHITE_POINT, &choices_string_list, choices );
  }

  if(oy_debug)
    oyMessageFunc_p( oyMSG_WARN, NULL, OY_DBG_FORMAT_
                   "src_name: %s -> illu_name: %s",
                   OY_DBG_ARGS_, oyOptions_FindString(opts, "src_name", 0), oyOptions_FindString(opts, "illu_name", 0) );
  oyOptions_SetFromDouble( &opts, "//" OY_TYPE_STD "/src_iccXYZ", src_XYZ[0], 0, OY_CREATE_NEW );
  oyOptions_SetFromDouble( &opts, "//" OY_TYPE_STD "/src_iccXYZ", src_XYZ[1], 1, OY_CREATE_NEW );
  oyOptions_SetFromDouble( &opts, "//" OY_TYPE_STD "/src_iccXYZ", src_XYZ[2], 2, OY_CREATE_NEW );
  oyOptions_SetFromDouble( &opts, "//" OY_TYPE_STD "/illu_iccXYZ", dst_XYZ[0], 0, OY_CREATE_NEW );
  oyOptions_SetFromDouble( &opts, "//" OY_TYPE_STD "/illu_iccXYZ", dst_XYZ[1], 1, OY_CREATE_NEW );
  oyOptions_SetFromDouble( &opts, "//" OY_TYPE_STD "/illu_iccXYZ", dst_XYZ[2], 2, OY_CREATE_NEW );
  /* cache the display white point abstract profile */
  error = oyOptions_Handle( "//" OY_TYPE_STD "/create_profile.white_point_adjust.bradford",
                            opts,             "create_profile.white_point_adjust.bradford.file_name",
                            &result_opts );
  DBG_S_( oyPrintTime() );
  if(error > 0)
    oyMessageFunc_p( oyMSG_WARN,(oyStruct_s*)monitor_profile, OY_DBG_FORMAT_
                   "oyOptions_Handle(white_point_adjust.bradford.file_name) failed %d", OY_DBG_ARGS_,
                   error);

  /* write cache profile for slightly better speed and useful for debugging */
  if(error == 0)
  {
    const char * file_name = oyOptions_FindString( result_opts, "file_name", 0 );
    char * cache_path = oyGetInstallPath( oyPATH_CACHE, oySCOPE_USER, oyAllocateFunc_ ), *t;
    if(strstr( cache_path, "device_link") != NULL)
    {
      t = strstr( cache_path, "device_link");
      t[0] = '\000';
      oyStringAddPrintf( &cache_path, 0,0, "white_point_adjust/%s.icc", file_name );
    }

    if(oyIsFile_(cache_path))
    {
      if(oy_debug)
        oyMessageFunc_p( oyMSG_DBG,(oyStruct_s*)monitor_profile, OY_DBG_FORMAT_
                     "found file_name: %s -> %s\n", OY_DBG_ARGS_, file_name, cache_path );
      wtpt = oyProfile_FromFile( cache_path, 0,0 );
      DBG_S_( oyPrintTime() );
    }
  }

  if(!error && wtpt)
  {
    oyOptions_MoveInStruct( module_options,
                          OY_STD "/icc_color/display.icc_profile.abstract.white_point.automatic.oy-monitor",
                          (oyStruct_s**) &wtpt, OY_CREATE_NEW );
    oyOptions_Release( &result_opts );
    oyOptions_Release( &opts );

    return error;
  }

  if(!error && !wtpt)
  {
    /* detect scaling factor
     * - convert monitor device RGB to XYZ,
     * - apply white point adaption matrix,
     * - convert back to monitor device RGB and
     * - again to XYZ to detect clipping and
     * - use that information for scaling inside the white point effect profile */
    oyProfile_s * xyz_profile = oyProfile_FromStd( oyASSUMED_XYZ, 0, 0 );
    float rgb[9] = {1,0,0, 0,1,0, 0,0,1},
          xyz[9] = {0,0,0, 0,0,0, 0,0,0};
    oyDATATYPE_e buf_type = oyFLOAT;
    oyConversion_s * cc_moni2xyz = oyConversion_CreateBasicPixelsFromBuffers(
                              monitor_profile, rgb, oyDataType_m(buf_type),
                              xyz_profile, xyz, oyDataType_m(buf_type),
                              0, 3 );
    oyConversion_s * cc_xyz2moni = oyConversion_CreateBasicPixelsFromBuffers(
                              xyz_profile, xyz, oyDataType_m(buf_type),
                              monitor_profile, rgb, oyDataType_m(buf_type),
                              0, 3 );
    oyMAT3 wtpt_adapt;
    oyCIEXYZ srcWtpt = {src_XYZ[0], src_XYZ[1], src_XYZ[2]},
             dstIllu = {dst_XYZ[0], dst_XYZ[1], dst_XYZ[2]};
    error = !oyAdaptationMatrix( &wtpt_adapt, NULL, &srcWtpt, &dstIllu );
    int i,j;
    for(j = 0; j < 100; ++j)
    {
      oyConversion_RunPixels( cc_moni2xyz, 0 );
      if(oy_debug)
        oyMessageFunc_p( oyMSG_DBG,(oyStruct_s*)cc_moni2xyz, OY_DBG_FORMAT_
                   "rgb->xyz:\nR[%g %g %g] G[%g %g %g] B[%g %g %g]",
                   OY_DBG_ARGS_, xyz[0], xyz[1], xyz[2], xyz[3], xyz[4], xyz[5], xyz[6], xyz[7], xyz[8]);
      oyVEC3 rXYZ, srcXYZ[3] = { {{xyz[0], xyz[1], xyz[2]}}, {{xyz[3], xyz[4], xyz[5]}}, {{xyz[6], xyz[7], xyz[8]}} };
      oyMAT3 wtpt_adapt_scaled,
             scale_mat = {{ {{scale,0,0}}, {{0,scale,0}}, {{0,0,scale}} }};
      oyMAT3per( &wtpt_adapt_scaled, &wtpt_adapt, &scale_mat );
      oyMAT3eval( &rXYZ, &wtpt_adapt_scaled, &srcXYZ[0] ); for(i = 0; i < 3; ++i) xyz[0+i] = rXYZ.n[i];
      oyMAT3eval( &rXYZ, &wtpt_adapt_scaled, &srcXYZ[1] ); for(i = 0; i < 3; ++i) xyz[3+i] = rXYZ.n[i];
      oyMAT3eval( &rXYZ, &wtpt_adapt_scaled, &srcXYZ[2] ); for(i = 0; i < 3; ++i) xyz[6+i] = rXYZ.n[i];
      if(oy_debug)
        oyMessageFunc_p( oyMSG_DBG,(oyStruct_s*)cc_moni2xyz, OY_DBG_FORMAT_
                   "srcWtpt->Illu:\nR[%g %g %g] G[%g %g %g] B[%g %g %g]", OY_DBG_ARGS_,
          xyz[0], xyz[1], xyz[2], xyz[3], xyz[4], xyz[5], xyz[6], xyz[7], xyz[8]);
      oyConversion_RunPixels( cc_xyz2moni, 0 );
      if(oy_debug)
        oyMessageFunc_p( oyMSG_WARN,(oyStruct_s*)cc_moni2xyz, OY_DBG_FORMAT_
                   "xyz->rgb:\nR[%g %g %g] G[%g %g %g] B[%g %g %g] %g",
                   OY_DBG_ARGS_, rgb[0], rgb[1], rgb[2], rgb[3], rgb[4], rgb[5], rgb[6], rgb[7], rgb[8], scale);
      if(rgb[0+0] < 0.99 && rgb[3+1] < 0.99 && rgb[6+2] < 0.99)
      {
        if(scale < 1.00) scale += 0.01;
        break;
      }
      scale -= 0.01;
    }
  }

  oyMessageFunc_p( /*error ?*/ oyMSG_WARN/*:oyMSG_DBG*/,(oyStruct_s*)monitor_profile, OY_DBG_FORMAT_
                   "%s display_white_point: %d [%g %g %g] -> [%g %g %g] * %g %d", OY_DBG_ARGS_,
          desc, display_white_point,
          src_XYZ[0], src_XYZ[1], src_XYZ[2], dst_XYZ[0], dst_XYZ[1], dst_XYZ[2], scale, error);
  if(error > 0)
    return error;

  /* write cache profile for slightly better speed and useful for debugging */
  if(error == 0)
  {
    const char * file_name = oyOptions_FindString( result_opts, "file_name", 0 );
    char * cache_path = oyGetInstallPath( oyPATH_CACHE, oySCOPE_USER, oyAllocateFunc_ ), *t;
    if(strstr( cache_path, "device_link") != NULL)
    {
      t = strstr( cache_path, "device_link");
      t[0] = '\000';
      oyStringAddPrintf( &cache_path, 0,0, "white_point_adjust/%s.icc", file_name );
    }

    {
      error = oyOptions_SetFromDouble( &opts, "//" OY_TYPE_STD "/scale", scale, 0, OY_CREATE_NEW );
      if(oy_debug)
        oyMessageFunc_p( oyMSG_DBG,(oyStruct_s*)monitor_profile, OY_DBG_FORMAT_
                     "creating file_name: %s -> %s\n", OY_DBG_ARGS_, file_name, cache_path );
      error = oyOptions_Handle( "//" OY_TYPE_STD "/create_profile.white_point_adjust.bradford",
                            opts,             "create_profile.white_point_adjust.bradford",
                            &result_opts );
      wtpt = (oyProfile_s*) oyOptions_GetType( result_opts, -1, "icc_profile",
                                           oyOBJECT_PROFILE_S );
      error = !wtpt;
      if(!error)
        oyProfile_ToFile_( (oyProfile_s_*) wtpt, cache_path );
      DBG_S_( oyPrintTime() );
    }
  }

  error = !wtpt;
  if(error == 0)
    oyOptions_MoveInStruct( module_options,
                          OY_STD "/icc_color/display.icc_profile.abstract.white_point.automatic.oy-monitor",
                          (oyStruct_s**) &wtpt, OY_CREATE_NEW );
  oyOptions_Release( &result_opts );
  oyOptions_Release( &opts );

  return error;
}