void CPDF_ColorSpace::ReleaseCS() {
if (this == GetStockCS(PDFCS_DEVICERGB)) {
return;
}
if (this == GetStockCS(PDFCS_DEVICEGRAY)) {
return;
}
if (this == GetStockCS(PDFCS_DEVICECMYK)) {
return;
}
if (this == GetStockCS(PDFCS_PATTERN)) {
return;
}
delete this;
}
FX_BOOL CPDF_ICCBasedCS::v_Load(CPDF_Document* pDoc, CPDF_Array* pArray)
{
CPDF_Stream* pStream = pArray->GetStream(1);
if (pStream == NULL) {
return FALSE;
}
m_pProfile = pDoc->LoadIccProfile(pStream);
if (!m_pProfile) {
return FALSE;
}
m_nComponents = m_pProfile->GetComponents(); //Try using the nComponents from ICC profile
CPDF_Dictionary* pDict = pStream->GetDict();
if (m_pProfile->m_pTransform == NULL) { // No valid ICC profile or using sRGB
CPDF_Object* pAlterCSObj = pDict ? pDict->GetElementValue(FX_BSTRC("Alternate")) : NULL;
if (pAlterCSObj) {
CPDF_ColorSpace* pAlterCS = CPDF_ColorSpace::Load(pDoc, pAlterCSObj);
if (pAlterCS) {
if (m_nComponents == 0) { // NO valid ICC profile
if (pAlterCS->CountComponents() > 0) { // Use Alternative colorspace
m_nComponents = pAlterCS->CountComponents();
m_pAlterCS = pAlterCS;
m_bOwn = TRUE;
}
else { // No valid alternative colorspace
pAlterCS->ReleaseCS();
int32_t nDictComponents = pDict ? pDict->GetInteger(FX_BSTRC("N")) : 0;
if (nDictComponents != 1 && nDictComponents != 3 && nDictComponents != 4) {
return FALSE;
}
m_nComponents = nDictComponents;
}
}
else { // Using sRGB
if (pAlterCS->CountComponents() != m_nComponents) {
pAlterCS->ReleaseCS();
}
else {
m_pAlterCS = pAlterCS;
m_bOwn = TRUE;
}
}
}
}
if (!m_pAlterCS) {
if (m_nComponents == 1) {
m_pAlterCS = GetStockCS(PDFCS_DEVICEGRAY);
}
else if (m_nComponents == 3) {
m_pAlterCS = GetStockCS(PDFCS_DEVICERGB);
}
else if (m_nComponents == 4) {
m_pAlterCS = GetStockCS(PDFCS_DEVICECMYK);
}
}
}
CPDF_Array* pRanges = pDict->GetArray(FX_BSTRC("Range"));
m_pRanges = FX_Alloc2D(FX_FLOAT, m_nComponents, 2);
for (int i = 0; i < m_nComponents * 2; i ++) {
if (pRanges) {
m_pRanges[i] = pRanges->GetNumber(i);
} else if (i % 2) {
m_pRanges[i] = 1.0f;
} else {
m_pRanges[i] = 0;
}
}
return TRUE;
}