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PSD: improve conversion sanity checks

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This commit is contained in:
Mirco Miranda
2026-02-09 08:20:08 +01:00
committed by Albert Astals Cid
parent f4b91d8a54
commit 359cb039d2
1 changed files with 20 additions and 12 deletions
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32
src/imageformats/psd.cpp
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@ -1017,7 +1017,7 @@ inline void rawChannelCopy(uchar *target, qint32 targetChannels, qint32 targetCh
template<class T>
inline void cmykToRgb(uchar *target, qint32 targetChannels, const char *source, qint32 sourceChannels, qint32 width, bool alpha = false)
inline bool cmykToRgb(uchar *target, qint32 targetChannels, const char *source, qint32 sourceChannels, qint32 width, bool alpha = false)
{
auto s = reinterpret_cast<const T*>(source);
auto t = reinterpret_cast<T*>(target);
@ -1026,7 +1026,7 @@ inline void cmykToRgb(uchar *target, qint32 targetChannels, const char *source,
if (sourceChannels < 2) {
qCDebug(LOG_PSDPLUGIN) << "cmykToRgb: image is not a valid MCH/CMYK!";
return;
return false;
}
for (qint32 w = 0; w < width; ++w) {
@ -1047,6 +1047,7 @@ inline void cmykToRgb(uchar *target, qint32 targetChannels, const char *source,
*(pt + 3) = std::numeric_limits<T>::max();
}
}
return true;
}
inline double finv(double v)
@ -1066,7 +1067,7 @@ inline double gammaCorrection(double linear)
}
template<class T>
inline void labToRgb(uchar *target, qint32 targetChannels, const char *source, qint32 sourceChannels, qint32 width, bool alpha = false)
inline bool labToRgb(uchar *target, qint32 targetChannels, const char *source, qint32 sourceChannels, qint32 width, bool alpha = false)
{
auto s = reinterpret_cast<const T*>(source);
auto t = reinterpret_cast<T*>(target);
@ -1075,7 +1076,7 @@ inline void labToRgb(uchar *target, qint32 targetChannels, const char *source, q
if (sourceChannels < 3) {
qCDebug(LOG_PSDPLUGIN) << "labToRgb: image is not a valid LAB!";
return;
return false;
}
for (qint32 w = 0; w < width; ++w) {
@ -1110,6 +1111,7 @@ inline void labToRgb(uchar *target, qint32 targetChannels, const char *source, q
*(pt + 3) = std::numeric_limits<T>::max();
}
}
return true;
}
bool readChannel(QByteArray &target, QDataStream &stream, quint32 compressedSize, quint16 compression)
@ -1450,10 +1452,13 @@ bool PSDHandler::read(QImage *image)
// Conversion to RGB
if (header.color_mode == CM_CMYK || header.color_mode == CM_MULTICHANNEL) {
if (tmpCmyk.isNull()) {
if (header.depth == 8)
cmykToRgb<quint8>(img.scanLine(y), imgChannels, psdScanline.data(), header.channel_count, header.width, alpha);
else if (header.depth == 16)
cmykToRgb<quint16>(img.scanLine(y), imgChannels, psdScanline.data(), header.channel_count, header.width, alpha);
if (header.depth == 8) {
if (!cmykToRgb<quint8>(img.scanLine(y), imgChannels, psdScanline.data(), header.channel_count, header.width, alpha))
return false;
} else if (header.depth == 16) {
if (!cmykToRgb<quint16>(img.scanLine(y), imgChannels, psdScanline.data(), header.channel_count, header.width, alpha))
return false;
}
} else if (header.depth == 8) {
rawChannelsCopyToCMYK<quint8>(tmpCmyk.bits(), 4, psdScanline.data(), header.channel_count, header.width);
if (auto rgbPtr = iccConv.convertedScanLine(tmpCmyk, 0))
@ -1469,10 +1474,13 @@ bool PSDHandler::read(QImage *image)
}
}
if (header.color_mode == CM_LABCOLOR) {
if (header.depth == 8)
labToRgb<quint8>(img.scanLine(y), imgChannels, psdScanline.data(), header.channel_count, header.width, alpha);
else if (header.depth == 16)
labToRgb<quint16>(img.scanLine(y), imgChannels, psdScanline.data(), header.channel_count, header.width, alpha);
if (header.depth == 8) {
if (!labToRgb<quint8>(img.scanLine(y), imgChannels, psdScanline.data(), header.channel_count, header.width, alpha))
return false;
} else if (header.depth == 16) {
if (!labToRgb<quint16>(img.scanLine(y), imgChannels, psdScanline.data(), header.channel_count, header.width, alpha))
return false;
}
}
if (header.color_mode == CM_RGB) {
if (header.depth == 8)