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615 | /* ============================================================
*
* This file is a part of digiKam project
* https://www.digikam.org
*
* Date : 2006-06-14
* Description : A JPEG-2000 IO file for DImg framework- load operations
*
* SPDX-FileCopyrightText: 2006-2025 by Gilles Caulier <caulier dot gilles at gmail dot com>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*
* ============================================================ */
#include "dimgjpeg2000loader_p.h"
namespace DigikamJPEG2000DImgPlugin
{
bool DImgJPEG2000Loader::load(const QString& filePath, DImgLoaderObserver* const observer)
{
readMetadata(filePath);
#ifdef Q_OS_WIN
FILE* const file = _wfopen((const wchar_t*)filePath.utf16(), L"rb");
#else
FILE* const file = fopen(filePath.toUtf8().constData(), "rb");
#endif
if (!file)
{
qCWarning(DIGIKAM_DIMG_LOG_JP2K) << "Unable to open JPEG2000 file";
loadingFailed();
return false;
}
imageSetAttribute(QLatin1String("format"), QLatin1String("JP2"));
#if defined JAS_VERSION_MAJOR && JAS_VERSION_MAJOR >= 3
// NOTE: nothing to do.
#else
QScopedPointer<DMetadata> metadata(new DMetadata(filePath));
QSize size = metadata->getItemDimensions();
QString decoderOptions = QLatin1String("max_samples=100000000");
if (size.isValid())
{
imageWidth() = size.width();
imageHeight() = size.height();
decoderOptions = QString::fromLatin1("max_samples=%1").arg(size.width() * size.height() * 4);
qCDebug(DIGIKAM_DIMG_LOG_JP2K) << "JP2 image size:" << size;
}
if (!(m_loadFlags & LoadImageData) && !(m_loadFlags & LoadICCData))
{
// libjasper will load the full image in memory already when calling jas_image_decode.
// This is bad when scanning. See bugs 215458 and 195583.
// Exiv2 is used to extract this info.
fclose(file);
return true;
}
#endif
// -------------------------------------------------------------------
// Initialize JPEG 2000 API.
long i = 0;
long x = 0;
long y = 0;
int components[4] = { 0 };
unsigned int maximum_component_depth = 0;
unsigned int scale[4] = { 0 };
unsigned int x_step[4] = { 0 };
unsigned int y_step[4] = { 0 };
unsigned long number_components = 0;
jas_image_t* jp2_image = nullptr;
jas_stream_t* jp2_stream = nullptr;
jas_matrix_t* pixels[4] = { nullptr };
if (initJasper() != 0)
{
qCWarning(DIGIKAM_DIMG_LOG_JP2K) << "Unable to init JPEG2000 decoder";
loadingFailed();
fclose(file);
return false;
}
jp2_stream = jas_stream_freopen(filePath.toUtf8().constData(), "rb", file);
if (jp2_stream == nullptr)
{
qCWarning(DIGIKAM_DIMG_LOG_JP2K) << "Unable to open JPEG2000 stream";
fclose(file);
cleanupJasper();
loadingFailed();
return false;
}
int fmt = jas_image_strtofmt(QByteArray("jp2").data());
#if defined JAS_VERSION_MAJOR && JAS_VERSION_MAJOR >= 3
jp2_image = jas_image_decode(jp2_stream, fmt, nullptr);
#else
// See bug 447240 and UPSTREAM https://github.com/jasper-software/jasper/issues/315#issuecomment-1007872809
qCDebug(DIGIKAM_DIMG_LOG_JP2K) << "jas_image_decode decoder options string:" << decoderOptions;
jp2_image = jas_image_decode(jp2_stream, fmt, decoderOptions.toLatin1().data());
#endif
if (jp2_image == nullptr)
{
qCWarning(DIGIKAM_DIMG_LOG_JP2K) << "Unable to decode JPEG2000 image";
jas_stream_close(jp2_stream);
cleanupJasper();
loadingFailed();
return false;
}
jas_stream_close(jp2_stream);
// some pseudo-progress
if (observer)
{
observer->progressInfo(0.1F);
}
// -------------------------------------------------------------------
// Check color space.
int colorModel = DImg::COLORMODELUNKNOWN;
switch (jas_clrspc_fam(jas_image_clrspc(jp2_image)))
{
case JAS_CLRSPC_FAM_RGB:
{
components[0] = jas_image_getcmptbytype(jp2_image, JAS_IMAGE_CT_RGB_R);
components[1] = jas_image_getcmptbytype(jp2_image, JAS_IMAGE_CT_RGB_G);
components[2] = jas_image_getcmptbytype(jp2_image, JAS_IMAGE_CT_RGB_B);
if ((components[0] < 0) || (components[1] < 0) || (components[2] < 0))
{
qCWarning(DIGIKAM_DIMG_LOG_JP2K) << "Error parsing JPEG2000 image : Missing Image Channel";
jas_image_destroy(jp2_image);
cleanupJasper();
loadingFailed();
return false;
}
number_components = 3;
components[3] = jas_image_getcmptbytype(jp2_image, 3);
if (components[3] > 0)
{
m_hasAlpha = true;
++number_components;
}
colorModel = DImg::RGB;
break;
}
case JAS_CLRSPC_FAM_GRAY:
{
components[0] = jas_image_getcmptbytype(jp2_image, JAS_IMAGE_CT_GRAY_Y);
// cppcheck-suppress knownConditionTrueFalse
if (components[0] < 0)
{
qCWarning(DIGIKAM_DIMG_LOG_JP2K) << "Error parsing JP2000 image : Missing Image Channel";
jas_image_destroy(jp2_image);
cleanupJasper();
loadingFailed();
return false;
}
number_components = 1;
colorModel = DImg::GRAYSCALE;
break;
}
case JAS_CLRSPC_FAM_YCBCR:
{
components[0] = jas_image_getcmptbytype(jp2_image, JAS_IMAGE_CT_YCBCR_Y);
components[1] = jas_image_getcmptbytype(jp2_image, JAS_IMAGE_CT_YCBCR_CB);
components[2] = jas_image_getcmptbytype(jp2_image, JAS_IMAGE_CT_YCBCR_CR);
// cppcheck-suppress knownConditionTrueFalse
if ((components[0] < 0) || (components[1] < 0) || (components[2] < 0))
{
qCWarning(DIGIKAM_DIMG_LOG_JP2K) << "Error parsing JP2000 image : Missing Image Channel";
jas_image_destroy(jp2_image);
cleanupJasper();
loadingFailed();
return false;
}
number_components = 3;
components[3] = jas_image_getcmptbytype(jp2_image, JAS_IMAGE_CT_UNKNOWN);
if (components[3] > 0)
{
m_hasAlpha = true;
++number_components;
}
// FIXME: image->colorspace = YCbCrColorspace;
colorModel = DImg::YCBCR;
break;
}
default:
{
qCWarning(DIGIKAM_DIMG_LOG_JP2K) << "Error parsing JP2000 image : Colorspace Model Is Not Supported";
jas_image_destroy(jp2_image);
cleanupJasper();
loadingFailed();
return false;
}
}
// -------------------------------------------------------------------
// Check image geometry.
imageWidth() = jas_image_width(jp2_image);
imageHeight() = jas_image_height(jp2_image);
for (i = 0 ; i < (long)number_components ; ++i)
{
if (
(
((jas_image_cmptwidth(jp2_image, components[i])*
jas_image_cmpthstep(jp2_image, components[i])) != (long)imageWidth())
) ||
(
((jas_image_cmptheight(jp2_image, components[i])*
jas_image_cmptvstep(jp2_image, components[i])) != (long)imageHeight())
) ||
(jas_image_cmpttlx(jp2_image, components[i]) != 0) ||
(jas_image_cmpttly(jp2_image, components[i]) != 0) ||
(jas_image_cmptsgnd(jp2_image, components[i]) != false)
)
{
qCWarning(DIGIKAM_DIMG_LOG_JP2K) << "Error parsing JPEG2000 image : Irregular Channel Geometry Not Supported";
jas_image_destroy(jp2_image);
cleanupJasper();
loadingFailed();
return false;
}
x_step[i] = jas_image_cmpthstep(jp2_image, components[i]);
y_step[i] = jas_image_cmptvstep(jp2_image, components[i]);
}
// -------------------------------------------------------------------
// Get image format.
maximum_component_depth = 0;
for (i = 0 ; i < (long)number_components ; ++i)
{
maximum_component_depth = qMax((long)jas_image_cmptprec(jp2_image, components[i]),
(long)maximum_component_depth);
pixels[i] = jas_matrix_create(1, ((unsigned int)imageWidth()) / x_step[i]);
if (!pixels[i])
{
qCWarning(DIGIKAM_DIMG_LOG_JP2K) << "Error decoding JPEG2000 image data : Memory Allocation Failed";
jas_image_destroy(jp2_image);
cleanupJasper();
loadingFailed();
return false;
}
}
#if defined JAS_VERSION_MAJOR && JAS_VERSION_MAJOR >= 3
if (!(m_loadFlags & LoadImageData) && !(m_loadFlags & LoadICCData))
{
imageSetAttribute(QLatin1String("originalColorModel"), colorModel);
imageSetAttribute(QLatin1String("originalBitDepth"), maximum_component_depth);
imageSetAttribute(QLatin1String("originalSize"), QSize(imageWidth(), imageHeight()));
jas_image_destroy(jp2_image);
cleanupJasper();
return true;
}
#endif
if (maximum_component_depth > 8)
{
m_sixteenBit = true;
}
for (i = 0 ; i < (long)number_components ; ++i)
{
scale[i] = 1;
int prec = jas_image_cmptprec(jp2_image, components[i]);
if (m_sixteenBit && (prec < 16))
{
scale[i] = (1 << (16 - jas_image_cmptprec(jp2_image, components[i])));
}
}
// -------------------------------------------------------------------
// Get image data.
QScopedArrayPointer<uchar> data;
if (m_loadFlags & LoadImageData)
{
if (m_sixteenBit) // 16 bits image.
{
data.reset(new_failureTolerant(imageWidth(), imageHeight(), 8));
}
else
{
data.reset(new_failureTolerant(imageWidth(), imageHeight(), 4));
}
if (!data)
{
qCWarning(DIGIKAM_DIMG_LOG_JP2K) << "Error decoding JPEG2000 image data : Memory Allocation Failed";
jas_image_destroy(jp2_image);
for (i = 0 ; i < (long)number_components ; ++i)
{
jas_matrix_destroy(pixels[i]);
}
cleanupJasper();
loadingFailed();
return false;
}
uint checkPoint = 0;
uchar* dst = data.data();
unsigned short* dst16 = reinterpret_cast<unsigned short*>(data.data());
for (y = 0 ; y < (long)imageHeight() ; ++y)
{
for (i = 0 ; i < (long)number_components ; ++i)
{
int ret = jas_image_readcmpt(jp2_image, (short)components[i], 0,
((unsigned int) y) / y_step[i],
((unsigned int) imageWidth()) / x_step[i],
1, pixels[i]);
if (ret != 0)
{
qCWarning(DIGIKAM_DIMG_LOG_JP2K) << "Error decoding JPEG2000 image data";
jas_image_destroy(jp2_image);
for (i = 0 ; i < (long)number_components ; ++i)
{
jas_matrix_destroy(pixels[i]);
}
cleanupJasper();
loadingFailed();
return false;
}
}
switch (number_components)
{
case 1: // Grayscale.
{
if (!m_sixteenBit) // 8 bits image.
{
for (x = 0 ; x < (long)imageWidth() ; ++x)
{
dst[0] = (uchar)(scale[0] * jas_matrix_getv(pixels[0], x / x_step[0]));
dst[1] = dst[0];
dst[2] = dst[0];
dst[3] = 0xFF;
dst += 4;
}
}
else // 16 bits image.
{
for (x = 0 ; x < (long)imageWidth() ; ++x)
{
dst16[0] = (unsigned short)(scale[0] * jas_matrix_getv(pixels[0], x / x_step[0]));
dst16[1] = dst16[0];
dst16[2] = dst16[0];
dst16[3] = 0xFFFF;
dst16 += 4;
}
}
break;
}
case 3: // RGB.
{
if (!m_sixteenBit) // 8 bits image.
{
for (x = 0 ; x < (long)imageWidth() ; ++x)
{
// Blue
dst[0] = (uchar)(scale[2] * jas_matrix_getv(pixels[2], x / x_step[2]));
// Green
dst[1] = (uchar)(scale[1] * jas_matrix_getv(pixels[1], x / x_step[1]));
// Red
dst[2] = (uchar)(scale[0] * jas_matrix_getv(pixels[0], x / x_step[0]));
// Alpha
dst[3] = 0xFF;
dst += 4;
}
}
else // 16 bits image.
{
for (x = 0 ; x < (long)imageWidth() ; ++x)
{
// Blue
dst16[0] = (unsigned short)(scale[2] * jas_matrix_getv(pixels[2], x / x_step[2]));
// Green
dst16[1] = (unsigned short)(scale[1] * jas_matrix_getv(pixels[1], x / x_step[1]));
// Red
dst16[2] = (unsigned short)(scale[0] * jas_matrix_getv(pixels[0], x / x_step[0]));
// Alpha
dst16[3] = 0xFFFF;
dst16 += 4;
}
}
break;
}
case 4: // RGBA.
{
if (!m_sixteenBit) // 8 bits image.
{
for (x = 0 ; x < (long)imageWidth() ; ++x)
{
// Blue
dst[0] = (uchar)(scale[2] * jas_matrix_getv(pixels[2], x / x_step[2]));
// Green
dst[1] = (uchar)(scale[1] * jas_matrix_getv(pixels[1], x / x_step[1]));
// Red
dst[2] = (uchar)(scale[0] * jas_matrix_getv(pixels[0], x / x_step[0]));
// Alpha
dst[3] = (uchar)(scale[3] * jas_matrix_getv(pixels[3], x / x_step[3]));
dst += 4;
}
}
else // 16 bits image.
{
for (x = 0 ; x < (long)imageWidth() ; ++x)
{
// Blue
dst16[0] = (unsigned short)(scale[2] * jas_matrix_getv(pixels[2], x / x_step[2]));
// Green
dst16[1] = (unsigned short)(scale[1] * jas_matrix_getv(pixels[1], x / x_step[1]));
// Red
dst16[2] = (unsigned short)(scale[0] * jas_matrix_getv(pixels[0], x / x_step[0]));
// Alpha
dst16[3] = (unsigned short)(scale[3] * jas_matrix_getv(pixels[3], x / x_step[3]));
dst16 += 4;
}
}
break;
}
}
// Use 0-10% and 90-100% for pseudo-progress
if (observer && (y >= (long)checkPoint))
{
checkPoint += granularity(observer, y, 0.8F);
if (!observer->continueQuery())
{
jas_image_destroy(jp2_image);
for (i = 0 ; i < (long)number_components ; ++i)
{
jas_matrix_destroy(pixels[i]);
}
cleanupJasper();
loadingFailed();
return false;
}
observer->progressInfo(0.1F + (0.8F * (((float)y) / ((float)imageHeight()))));
}
}
}
// -------------------------------------------------------------------
// Get ICC color profile.
if (m_loadFlags & LoadICCData)
{
jas_iccprof_t* icc_profile = nullptr;
jas_stream_t* icc_stream = nullptr;
jas_cmprof_t* cm_profile = nullptr;
// To prevent cppcheck warnings.
(void)icc_profile;
(void)icc_stream;
(void)cm_profile;
cm_profile = jas_image_cmprof(jp2_image);
if (cm_profile != nullptr)
{
icc_profile = jas_iccprof_createfromcmprof(cm_profile);
}
if (icc_profile != nullptr)
{
icc_stream = jas_stream_memopen(nullptr, 0);
if (icc_stream != nullptr)
{
if (jas_iccprof_save(icc_profile, icc_stream) == 0)
{
if (jas_stream_flush(icc_stream) == 0)
{
jas_stream_memobj_t* const blob = (jas_stream_memobj_t*) icc_stream->obj_;<--- C-style pointer casting [+]C-style pointer casting detected. C++ offers four different kinds of casts as replacements: static_cast, const_cast, dynamic_cast and reinterpret_cast. A C-style cast could evaluate to any of those automatically, thus it is considered safer if the programmer explicitly states which kind of cast is expected.
QByteArray profile_rawdata;
profile_rawdata.resize(blob->len_);
memcpy(profile_rawdata.data(), blob->buf_, blob->len_);
imageSetIccProfile(IccProfile(profile_rawdata));
jas_stream_close(icc_stream);
}
}
}
}
else
{
// If ICC profile is null, check Exif metadata.
checkExifWorkingColorSpace();
}
}
if (observer)
{
observer->progressInfo(1.0F);
}
imageData() = data.take();
imageSetAttribute(QLatin1String("originalColorModel"), colorModel);
imageSetAttribute(QLatin1String("originalBitDepth"), maximum_component_depth);
imageSetAttribute(QLatin1String("originalSize"), QSize(imageWidth(), imageHeight()));
jas_image_destroy(jp2_image);
for (i = 0 ; i < (long)number_components ; ++i)
{
jas_matrix_destroy(pixels[i]);
}
cleanupJasper();
return true;
}
} // namespace DigikamJPEG2000DImgPlugin
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