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LibPDF: Move colorspace conversion functions up a bit

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No code change, no behavior change. Pure code move.
This commit is contained in:
Nico Weber 2023-11-02 08:48:54 -04:00 • committed by Tim Flynn
parent 00f1a6cf86
commit 641365b235
1 changed files with 62 additions and 62 deletions
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124
Userland/Libraries/LibPDF/ColorSpace.cpp
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@ -183,68 +183,6 @@ DeviceNColorSpace::DeviceNColorSpace(size_t number_of_components)
{
}
PDFErrorOr<NonnullRefPtr<CalRGBColorSpace>> CalRGBColorSpace::create(Document* document, Vector<Value>&& parameters)
{
if (parameters.size() != 1)
return Error { Error::Type::MalformedPDF, "RGB color space expects one parameter" };
auto param = parameters[0];
if (!param.has<NonnullRefPtr<Object>>() || !param.get<NonnullRefPtr<Object>>()->is<DictObject>())
return Error { Error::Type::MalformedPDF, "RGB color space expects a dict parameter" };
auto dict = param.get<NonnullRefPtr<Object>>()->cast<DictObject>();
if (!dict->contains(CommonNames::WhitePoint))
return Error { Error::Type::MalformedPDF, "RGB color space expects a Whitepoint key" };
auto white_point_array = TRY(dict->get_array(document, CommonNames::WhitePoint));
if (white_point_array->size() != 3)
return Error { Error::Type::MalformedPDF, "RGB color space expects 3 Whitepoint parameters" };
auto color_space = adopt_ref(*new CalRGBColorSpace());
color_space->m_whitepoint[0] = white_point_array->at(0).to_float();
color_space->m_whitepoint[1] = white_point_array->at(1).to_float();
color_space->m_whitepoint[2] = white_point_array->at(2).to_float();
if (color_space->m_whitepoint[1] != 1.0f)
return Error { Error::Type::MalformedPDF, "RGB color space expects 2nd Whitepoint to be 1.0" };
if (dict->contains(CommonNames::BlackPoint)) {
auto black_point_array = TRY(dict->get_array(document, CommonNames::BlackPoint));
if (black_point_array->size() == 3) {
color_space->m_blackpoint[0] = black_point_array->at(0).to_float();
color_space->m_blackpoint[1] = black_point_array->at(1).to_float();
color_space->m_blackpoint[2] = black_point_array->at(2).to_float();
}
}
if (dict->contains(CommonNames::Gamma)) {
auto gamma_array = TRY(dict->get_array(document, CommonNames::Gamma));
if (gamma_array->size() == 3) {
color_space->m_gamma[0] = gamma_array->at(0).to_float();
color_space->m_gamma[1] = gamma_array->at(1).to_float();
color_space->m_gamma[2] = gamma_array->at(2).to_float();
}
}
if (dict->contains(CommonNames::Matrix)) {
auto matrix_array = TRY(dict->get_array(document, CommonNames::Matrix));
if (matrix_array->size() == 9) {
color_space->m_matrix[0] = matrix_array->at(0).to_float();
color_space->m_matrix[1] = matrix_array->at(1).to_float();
color_space->m_matrix[2] = matrix_array->at(2).to_float();
color_space->m_matrix[3] = matrix_array->at(3).to_float();
color_space->m_matrix[4] = matrix_array->at(4).to_float();
color_space->m_matrix[5] = matrix_array->at(5).to_float();
color_space->m_matrix[6] = matrix_array->at(6).to_float();
color_space->m_matrix[7] = matrix_array->at(7).to_float();
color_space->m_matrix[8] = matrix_array->at(8).to_float();
}
}
return color_space;
}
constexpr Array<float, 3> matrix_multiply(Array<float, 9> a, Array<float, 3> b)
{
return Array<float, 3> {
@ -322,6 +260,68 @@ constexpr Array<float, 3> convert_to_srgb(Array<float, 3> xyz)
return matrix_multiply(conversion_matrix, xyz);
}
PDFErrorOr<NonnullRefPtr<CalRGBColorSpace>> CalRGBColorSpace::create(Document* document, Vector<Value>&& parameters)
{
if (parameters.size() != 1)
return Error { Error::Type::MalformedPDF, "RGB color space expects one parameter" };
auto param = parameters[0];
if (!param.has<NonnullRefPtr<Object>>() || !param.get<NonnullRefPtr<Object>>()->is<DictObject>())
return Error { Error::Type::MalformedPDF, "RGB color space expects a dict parameter" };
auto dict = param.get<NonnullRefPtr<Object>>()->cast<DictObject>();
if (!dict->contains(CommonNames::WhitePoint))
return Error { Error::Type::MalformedPDF, "RGB color space expects a Whitepoint key" };
auto white_point_array = TRY(dict->get_array(document, CommonNames::WhitePoint));
if (white_point_array->size() != 3)
return Error { Error::Type::MalformedPDF, "RGB color space expects 3 Whitepoint parameters" };
auto color_space = adopt_ref(*new CalRGBColorSpace());
color_space->m_whitepoint[0] = white_point_array->at(0).to_float();
color_space->m_whitepoint[1] = white_point_array->at(1).to_float();
color_space->m_whitepoint[2] = white_point_array->at(2).to_float();
if (color_space->m_whitepoint[1] != 1.0f)
return Error { Error::Type::MalformedPDF, "RGB color space expects 2nd Whitepoint to be 1.0" };
if (dict->contains(CommonNames::BlackPoint)) {
auto black_point_array = TRY(dict->get_array(document, CommonNames::BlackPoint));
if (black_point_array->size() == 3) {
color_space->m_blackpoint[0] = black_point_array->at(0).to_float();
color_space->m_blackpoint[1] = black_point_array->at(1).to_float();
color_space->m_blackpoint[2] = black_point_array->at(2).to_float();
}
}
if (dict->contains(CommonNames::Gamma)) {
auto gamma_array = TRY(dict->get_array(document, CommonNames::Gamma));
if (gamma_array->size() == 3) {
color_space->m_gamma[0] = gamma_array->at(0).to_float();
color_space->m_gamma[1] = gamma_array->at(1).to_float();
color_space->m_gamma[2] = gamma_array->at(2).to_float();
}
}
if (dict->contains(CommonNames::Matrix)) {
auto matrix_array = TRY(dict->get_array(document, CommonNames::Matrix));
if (matrix_array->size() == 9) {
color_space->m_matrix[0] = matrix_array->at(0).to_float();
color_space->m_matrix[1] = matrix_array->at(1).to_float();
color_space->m_matrix[2] = matrix_array->at(2).to_float();
color_space->m_matrix[3] = matrix_array->at(3).to_float();
color_space->m_matrix[4] = matrix_array->at(4).to_float();
color_space->m_matrix[5] = matrix_array->at(5).to_float();
color_space->m_matrix[6] = matrix_array->at(6).to_float();
color_space->m_matrix[7] = matrix_array->at(7).to_float();
color_space->m_matrix[8] = matrix_array->at(8).to_float();
}
}
return color_space;
}
PDFErrorOr<Color> CalRGBColorSpace::color(ReadonlySpan<Value> arguments) const
{
VERIFY(arguments.size() == 3);