/**
* gimp_color_profile_new_srgb:
*
* This function is a replacement for cmsCreate_sRGBProfile() and
* returns an sRGB profile that is functionally the same as the
* ArgyllCMS sRGB.icm profile. "Functionally the same" means it has
* the same red, green, and blue colorants and the V4 "chad"
* equivalent of the ArgyllCMS V2 white point. The profile TRC is also
* functionally equivalent to the ArgyllCMS sRGB.icm TRC and is the
* same as the LCMS sRGB built-in profile TRC.
*
* The actual primaries in the sRGB specification are
* red xy: {0.6400, 0.3300, 1.0}
* green xy: {0.3000, 0.6000, 1.0}
* blue xy: {0.1500, 0.0600, 1.0}
*
* The sRGB primaries given below are "pre-quantized" to compensate
* for hexadecimal quantization during the profile-making process.
* Unless the profile-making code compensates for this quantization,
* the resulting profile's red, green, and blue colorants will deviate
* slightly from the correct XYZ values.
*
* LCMS2 doesn't compensate for hexadecimal quantization. The
* "pre-quantized" primaries below were back-calculated from the
* ArgyllCMS sRGB.icm profile. The resulting sRGB profile's colorants
* exactly matches the ArgyllCMS sRGB.icm profile colorants.
*
* Return value: the sRGB #GimpColorProfile.
*
* Since: 2.10
**/
GimpColorProfile *
gimp_color_profile_new_srgb (void)
{
static GimpColorProfile *profile = NULL;
const guint8 *data;
gsize length;
if (G_UNLIKELY (profile == NULL))
{
cmsHPROFILE lcms_profile = gimp_color_profile_new_srgb_internal ();
profile = gimp_color_profile_new_from_lcms_profile (lcms_profile, NULL);
cmsCloseProfile (lcms_profile);
#if 0
/* for testing the code to get the colorants and make a new profile */
{
GimpMatrix3 matrix;
if (gimp_color_profile_get_rgb_matrix_colorants (profile, &matrix))
{
GimpColorProfile *test;
g_printerr ("Profile Red colorant XYZ: %1.8f, %1.8f, %1.8f \n",
matrix.coeff[0][0],
matrix.coeff[0][1],
matrix.coeff[0][2]);
g_printerr ("Profile Green colorant XYZ: %1.8f, %1.8f, %1.8f \n",
matrix.coeff[1][0],
matrix.coeff[1][1],
matrix.coeff[1][2]);
g_printerr ("Profile Blue colorant XYZ: %1.8f, %1.8f, %1.8f \n",
matrix.coeff[2][0],
matrix.coeff[2][1],
matrix.coeff[2][2]);
test = gimp_color_profile_new_foobar (profile);
g_object_unref (test);
}
}
#endif
}
data = gimp_color_profile_get_icc_profile (profile, &length);
return gimp_color_profile_new_from_icc_profile (data, length, NULL);
}
/**
* gimp_color_profile_new_srgb:
*
* This function is a replacement for cmsCreate_sRGBProfile() and
* returns an sRGB profile that is functionally the same as the
* ArgyllCMS sRGB.icm profile. "Functionally the same" means it has
* the same red, green, and blue colorants and the V4 "chad"
* equivalent of the ArgyllCMS V2 white point. The profile TRC is also
* functionally equivalent to the ArgyllCMS sRGB.icm TRC and is the
* same as the LCMS sRGB built-in profile TRC.
*
* The actual primaries in the sRGB specification are
* red xy: {0.6400, 0.3300, 1.0}
* green xy: {0.3000, 0.6000, 1.0}
* blue xy: {0.1500, 0.0600, 1.0}
*
* The sRGB primaries given below are "pre-quantized" to compensate
* for hexadecimal quantization during the profile-making process.
* Unless the profile-making code compensates for this quantization,
* the resulting profile's red, green, and blue colorants will deviate
* slightly from the correct XYZ values.
*
* LCMS2 doesn't compensate for hexadecimal quantization. The
* "pre-quantized" primaries below were back-calculated from the
* ArgyllCMS sRGB.icm profile. The resulting sRGB profile's colorants
* exactly matches the ArgyllCMS sRGB.icm profile colorants.
*
* Return value: the sRGB cmsHPROFILE.
*
* Since: 2.10
**/
GimpColorProfile
gimp_color_profile_new_srgb (void)
{
static guint8 *profile_data = NULL;
static gsize profile_length = 0;
if (G_UNLIKELY (profile_data == NULL))
{
GimpColorProfile profile;
profile = gimp_color_profile_new_srgb_internal ();
profile_data = gimp_color_profile_save_to_data (profile, &profile_length,
NULL);
gimp_color_profile_close (profile);
}
return gimp_color_profile_open_from_data (profile_data, profile_length, NULL);
}
