#include "qjpeghandler_p.h"
#include <qbuffer.h>
#include <qcolorspace.h>
#include <qcolortransform.h>
#include <qdebug.h>
#include <qimage.h>
#include <qlist.h>
#include <qloggingcategory.h>
#include <qmath.h>
#include <qvariant.h>
#include <private/qicc_p.h>
#include <private/qsimd_p.h>
#include <private/qimage_p.h>
#include <stdio.h>
#include <setjmp.h>
#include <jpeglib.h>

Include dependency graph for qjpeghandler.cpp:

Classes
struct	my_error_mgr

struct	my_jpeg_source_mgr

struct	my_jpeg_destination_mgr

class	QJpegHandlerPrivate

Macros
#define	XMD_H

#define	HIGH_QUALITY_THRESHOLD 50

Typedefs
typedef void(QT_FASTCALL *	Rgb888ToRgb32Converter) (quint32 dst, const uchar src, int len)

Functions
QT_BEGIN_NAMESPACE Q_GUI_EXPORT void QT_FASTCALL	qt_convert_rgb888_to_rgb32 (quint32 dst, const uchar src, int len)

static void	my_error_exit (j_common_ptr cinfo)

static void	my_output_message (j_common_ptr cinfo)

static void	qt_init_source (j_decompress_ptr)

static boolean	qt_fill_input_buffer (j_decompress_ptr cinfo)

static void	qt_skip_input_data (j_decompress_ptr cinfo, long num_bytes)

static void	qt_term_source (j_decompress_ptr cinfo)

static bool	read_jpeg_size (int &w, int &h, j_decompress_ptr cinfo)

static bool	read_jpeg_format (QImage::Format &format, j_decompress_ptr cinfo)

static bool	ensureValidImage (QImage dest, struct jpeg_decompress_struct info, const QSize &size)

static bool	read_jpeg_image (QImage outImage, QSize scaledSize, QRect scaledClipRect, QRect clipRect, int quality, Rgb888ToRgb32Converter converter, j_decompress_ptr info, struct my_error_mgr err)

static void	qt_init_destination (j_compress_ptr)

static boolean	qt_empty_output_buffer (j_compress_ptr cinfo)

static void	qt_term_destination (j_compress_ptr cinfo)

static void	set_text (const QImage &image, j_compress_ptr cinfo, const QString &description)

static void	write_icc_profile (const QImage &image, j_compress_ptr cinfo)

static bool	do_write_jpeg_image (struct jpeg_compress_struct &cinfo, JSAMPROW row_pointer, const QImage &image, QIODevice device, int sourceQuality, const QString &description, bool optimize, bool progressive)

static bool	write_jpeg_image (const QImage &image, QIODevice *device, int sourceQuality, const QString &description, bool optimize, bool progressive)

static bool	readExifHeader (QDataStream &stream)

static int	getExifOrientation (QByteArray &exifData)

static QImageIOHandler::Transformations	exif2Qt (int exifOrientation)

Q_GUI_EXPORT void QT_FASTCALL	qt_convert_rgb888_to_rgb32_neon (quint32 dst, const uchar src, int len)

Q_GUI_EXPORT void QT_FASTCALL	qt_convert_rgb888_to_rgb32_ssse3 (quint32 dst, const uchar src, int len)

void	qt_convert_rgb888_to_rgb32_mips_dspr2_asm (quint32 dst, const uchar src, int len)

void	qt_imageTransform (QImage &src, QImageIOHandler::Transformations orient)

Variables
static const int	max_buf = 4096

static constexpr int	maxMarkerSize = 65533

Macro Definition Documentation

◆ HIGH_QUALITY_THRESHOLD

#define HIGH_QUALITY_THRESHOLD 50

Definition at line 164 of file qjpeghandler.cpp.

◆ XMD_H

#define XMD_H

Definition at line 28 of file qjpeghandler.cpp.

Typedef Documentation

◆ Rgb888ToRgb32Converter

typedef void(QT_FASTCALL * Rgb888ToRgb32Converter) (quint32 *dst, const uchar *src, int len)

Definition at line 42 of file qjpeghandler.cpp.

Function Documentation

◆ do_write_jpeg_image()

static bool do_write_jpeg_image	(	struct jpeg_compress_struct &	cinfo,
		JSAMPROW *	row_pointer,
		const QImage &	image,
		QIODevice *	device,
		int	sourceQuality,
		const QString &	description,
		bool	optimize,
		bool	progressive
	)

static

Definition at line 489 of file qjpeghandler.cpp.

References QImage::constScanLine(), device, QImage::Format_Alpha8, QImage::Format_ARGB32, QImage::Format_ARGB32_Premultiplied, QImage::Format_Grayscale16, QImage::Format_Grayscale8, QImage::Format_Indexed8, QImage::Format_Invalid, QImage::Format_Mono, QImage::Format_MonoLSB, QImage::Format_RGB32, QImage::Format_RGB888, i, my_error_exit(), my_output_message(), pix, qAbs(), qBlue(), qGreen(), qIsGray(), qMin(), qRed(), QRgb, qRound(), rgb, set_text(), my_error_mgr::setjmp_buffer, and write_icc_profile().

Referenced by write_jpeg_image().

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◆ ensureValidImage()

static bool ensureValidImage	(	QImage *	dest,
		struct jpeg_decompress_struct *	info,
		const QSize &	size
	)

static

Definition at line 186 of file qjpeghandler.cpp.

References QImageIOHandler::allocateImage(), QImage::Format_Grayscale8, QImage::Format_RGB32, and info.

Referenced by read_jpeg_image().

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◆ exif2Qt()

static QImageIOHandler::Transformations exif2Qt ( int exifOrientation )

static

Definition at line 865 of file qjpeghandler.cpp.

References qCWarning, QImageIOHandler::TransformationFlip, QImageIOHandler::TransformationFlipAndRotate90, QImageIOHandler::TransformationMirror, QImageIOHandler::TransformationMirrorAndRotate90, QImageIOHandler::TransformationNone, QImageIOHandler::TransformationRotate180, QImageIOHandler::TransformationRotate270, and QImageIOHandler::TransformationRotate90.

Referenced by QIIOFHelper::imageProperty(), and QJpegHandlerPrivate::readJpegHeader().

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◆ getExifOrientation()

static int getExifOrientation ( QByteArray & exifData )

static

Definition at line 783 of file qjpeghandler.cpp.

References QDataStream::BigEndian, QDataStream::LittleEndian, QDataStream::Ok, Q_ASSERT, readExifHeader(), QIODeviceBase::ReadOnly, QByteArray::size(), and tag.

Referenced by QJpegHandlerPrivate::readJpegHeader().

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◆ my_error_exit()

static void my_error_exit ( j_common_ptr cinfo )

static

Definition at line 50 of file qjpeghandler.cpp.

References my_error_mgr::setjmp_buffer.

Referenced by do_write_jpeg_image(), and QJpegHandlerPrivate::readJpegHeader().

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◆ my_output_message()

static void my_output_message ( j_common_ptr cinfo )

static

Definition at line 57 of file qjpeghandler.cpp.

References qCWarning.

Referenced by do_write_jpeg_image(), read_jpeg_image(), and QJpegHandlerPrivate::readJpegHeader().

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◆ qt_convert_rgb888_to_rgb32()

QT_BEGIN_NAMESPACE Q_GUI_EXPORT void QT_FASTCALL qt_convert_rgb888_to_rgb32	(	quint32 *	dst,
		const uchar *	src,
		int	len
	)

Definition at line 679 of file qimage_conversions.cpp.

Referenced by convert_RGB888_to_RGB().

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◆ qt_convert_rgb888_to_rgb32_mips_dspr2_asm()

void qt_convert_rgb888_to_rgb32_mips_dspr2_asm	(	quint32 *	dst,
		const uchar *	src,
		int	len
	)

◆ qt_convert_rgb888_to_rgb32_neon()

Q_GUI_EXPORT void QT_FASTCALL qt_convert_rgb888_to_rgb32_neon	(	quint32 *	dst,
		const uchar *	src,
		int	len
	)

Referenced by QJpegHandler::QJpegHandler().

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◆ qt_convert_rgb888_to_rgb32_ssse3()

Q_GUI_EXPORT void QT_FASTCALL qt_convert_rgb888_to_rgb32_ssse3	(	quint32 *	dst,
		const uchar *	src,
		int	len
	)

Referenced by QJpegHandler::QJpegHandler().

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◆ qt_empty_output_buffer()

static boolean qt_empty_output_buffer ( j_compress_ptr cinfo )

static

Definition at line 416 of file qjpeghandler.cpp.

References my_jpeg_destination_mgr::buffer, my_jpeg_destination_mgr::device, max_buf, and QIODevice::write().

Referenced by my_jpeg_destination_mgr::my_jpeg_destination_mgr().

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◆ qt_fill_input_buffer()

static boolean qt_fill_input_buffer ( j_decompress_ptr cinfo )

static

Definition at line 85 of file qjpeghandler.cpp.

References max_buf.

Referenced by my_jpeg_source_mgr::my_jpeg_source_mgr(), and qt_skip_input_data().

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◆ qt_imageTransform()

void qt_imageTransform	(	QImage &	src,
		QImageIOHandler::Transformations	orient
	)

Definition at line 5739 of file qimage.cpp.

References rotated270(), rotated90(), QImageIOHandler::TransformationFlip, QImageIOHandler::TransformationMirror, QImageIOHandler::TransformationNone, QImageIOHandler::TransformationRotate270, and QImageIOHandler::TransformationRotate90.

Referenced by QImageReader::read(), QImageWriter::write(), and QJpegHandler::write().

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◆ qt_init_destination()

static void qt_init_destination ( j_compress_ptr )

static

Definition at line 412 of file qjpeghandler.cpp.

Referenced by my_jpeg_destination_mgr::my_jpeg_destination_mgr().

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◆ qt_init_source()

static void qt_init_source ( j_decompress_ptr )

static

Definition at line 81 of file qjpeghandler.cpp.

Referenced by my_jpeg_source_mgr::my_jpeg_source_mgr().

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◆ qt_skip_input_data()

static void qt_skip_input_data	(	j_decompress_ptr	cinfo,
		long	num_bytes
	)

static

Definition at line 109 of file qjpeghandler.cpp.

References qt_fill_input_buffer(), and void.

Referenced by my_jpeg_source_mgr::my_jpeg_source_mgr().

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◆ qt_term_destination()

static void qt_term_destination ( j_compress_ptr cinfo )

static

Definition at line 430 of file qjpeghandler.cpp.

References my_jpeg_destination_mgr::buffer, my_jpeg_destination_mgr::device, max_buf, and QIODevice::write().

Referenced by my_jpeg_destination_mgr::my_jpeg_destination_mgr().

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◆ qt_term_source()

static void qt_term_source ( j_decompress_ptr cinfo )

static

Definition at line 132 of file qjpeghandler.cpp.

Referenced by my_jpeg_source_mgr::my_jpeg_source_mgr().

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◆ read_jpeg_format()

static bool read_jpeg_format	(	QImage::Format &	format,
		j_decompress_ptr	cinfo
	)

inlinestatic

Definition at line 166 of file qjpeghandler.cpp.

References QImage::Format_Grayscale8, and QImage::Format_RGB32.

Referenced by QJpegHandlerPrivate::readJpegHeader().

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◆ read_jpeg_image()

static bool read_jpeg_image	(	QImage *	outImage,
		QSize	scaledSize,
		QRect	scaledClipRect,
		QRect	clipRect,
		int	quality,
		Rgb888ToRgb32Converter	converter,
		j_decompress_ptr	info,
		struct my_error_mgr *	err
	)

static

Definition at line 205 of file qjpeghandler.cpp.

References QRect::bottom(), QImage::copy(), ensureValidImage(), Qt::FastTransformation, QRect::height(), QSize::height(), HIGH_QUALITY_THRESHOLD, i, Qt::IgnoreAspectRatio, info, QRect::intersected(), QRect::isEmpty(), QSize::isEmpty(), QImage::isNull(), QSize::isValid(), my_output_message(), out, qBound(), qCeil(), qMin(), QRgb, qRgb(), QRect::right(), QImage::scaled(), QImage::scanLine(), QImage::setDotsPerMeterX(), QImage::setDotsPerMeterY(), my_error_mgr::setjmp_buffer, QRect::size(), Qt::SmoothTransformation, QRect::topLeft(), QRect::translate(), void, QRect::width(), QSize::width(), QRect::x(), and QRect::y().

Referenced by QJpegHandlerPrivate::read().

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◆ read_jpeg_size()

static bool read_jpeg_size	(	int &	w,
		int &	h,
		j_decompress_ptr	cinfo
	)

inlinestatic

Definition at line 155 of file qjpeghandler.cpp.

References void.

Referenced by QJpegHandlerPrivate::readJpegHeader().

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◆ readExifHeader()

static bool readExifHeader ( QDataStream & stream )

static

Definition at line 762 of file qjpeghandler.cpp.

Referenced by getExifOrientation().

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◆ set_text()

static void set_text	(	const QImage &	image,
		j_compress_ptr	cinfo,
		const QString &	description
	)

inlinestatic

Definition at line 454 of file qjpeghandler.cpp.

References QString::begin(), QByteArray::constData(), QString::end(), QByteArray::isEmpty(), it, maxMarkerSize, qt_getImageText(), QByteArray::size(), text, and QByteArray::truncate().

Referenced by do_write_jpeg_image().

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◆ write_icc_profile()

static void write_icc_profile	(	const QImage &	image,
		j_compress_ptr	cinfo
	)

inlinestatic

Definition at line 468 of file qjpeghandler.cpp.

References QByteArray::constData(), QByteArray::isEmpty(), maxMarkerSize, QByteArray::mid(), Q_ASSERT, qMin(), and QByteArray::size().

Referenced by do_write_jpeg_image().

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◆ write_jpeg_image()

static bool write_jpeg_image	(	const QImage &	image,
		QIODevice *	device,
		int	sourceQuality,
		const QString &	description,
		bool	optimize,
		bool	progressive
	)

static

Definition at line 687 of file qjpeghandler.cpp.

References device, and do_write_jpeg_image().

Referenced by QJpegHandler::write().

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Variable Documentation

◆ max_buf

const int max_buf = 4096

static

Definition at line 67 of file qjpeghandler.cpp.

Referenced by my_jpeg_destination_mgr::my_jpeg_destination_mgr(), qt_empty_output_buffer(), qt_fill_input_buffer(), and qt_term_destination().

◆ maxMarkerSize

constexpr int maxMarkerSize = 65533

staticconstexpr

Definition at line 452 of file qjpeghandler.cpp.

Referenced by set_text(), and write_icc_profile().

Classes

Macros

Typedefs

Functions

Variables

Macro Definition Documentation

◆ HIGH_QUALITY_THRESHOLD

◆ XMD_H

Typedef Documentation

◆ Rgb888ToRgb32Converter

Function Documentation

◆ do_write_jpeg_image()

◆ ensureValidImage()

◆ exif2Qt()

◆ getExifOrientation()

◆ my_error_exit()

◆ my_output_message()

◆ qt_convert_rgb888_to_rgb32()

◆ qt_convert_rgb888_to_rgb32_mips_dspr2_asm()

◆ qt_convert_rgb888_to_rgb32_neon()

◆ qt_convert_rgb888_to_rgb32_ssse3()

◆ qt_empty_output_buffer()

◆ qt_fill_input_buffer()

◆ qt_imageTransform()

◆ qt_init_destination()

◆ qt_init_source()

◆ qt_skip_input_data()

◆ qt_term_destination()

◆ qt_term_source()

◆ read_jpeg_format()

◆ read_jpeg_image()

◆ read_jpeg_size()

◆ readExifHeader()

◆ set_text()

◆ write_icc_profile()

◆ write_jpeg_image()

Variable Documentation

◆ max_buf

◆ maxMarkerSize