qmemrotate.cpp File Reference

#include "private/qmemrotate_p.h"

Go to the source code of this file.

Classes
struct	qrgb_gl_rgba

Macros
#define	QT_IMPL_MEMROTATE(srctype, desttype)
#define	QT_IMPL_SIMPLE_MEMROTATE(srctype, desttype)

Functions
void	qt_memrotate180_16 (const uchar *srcPixels, int w, int h, int sbpl, uchar *destPixels, int dbpl)
void	qt_memrotate180_32 (const uchar *srcPixels, int w, int h, int sbpl, uchar *destPixels, int dbpl)
template<class DST , class SRC >
Q_STATIC_TEMPLATE_FUNCTION void	qt_memrotate180_template (const SRC *src, int w, int h, int sstride, DST *dest, int dstride)
void	qt_memrotate270_16 (const uchar *srcPixels, int w, int h, int sbpl, uchar *destPixels, int dbpl)
void	qt_memrotate270_32 (const uchar *srcPixels, int w, int h, int sbpl, uchar *destPixels, int dbpl)
template<class DST , class SRC >
Q_STATIC_TEMPLATE_FUNCTION void	qt_memrotate270_cachedRead (const SRC *src, int w, int h, int sstride, DST *dest, int dstride)
template<class DST , class SRC >
Q_STATIC_TEMPLATE_FUNCTION void	qt_memrotate270_cachedWrite (const SRC *src, int w, int h, int sstride, DST *dest, int dstride)
template<class DST , class SRC >
Q_STATIC_TEMPLATE_FUNCTION void	qt_memrotate270_packing (const SRC *src, int w, int h, int sstride, DST *dest, int dstride)
template<class DST , class SRC >
Q_STATIC_TEMPLATE_FUNCTION void	qt_memrotate270_template (const SRC *src, int srcWidth, int srcHeight, int srcStride, DST *dest, int dstStride)
template<class DST , class SRC >
Q_STATIC_TEMPLATE_FUNCTION void	qt_memrotate270_tiled (const SRC *src, int w, int h, int sstride, DST *dest, int dstride)
template<class DST , class SRC >
Q_STATIC_TEMPLATE_FUNCTION void	qt_memrotate270_tiled_unpacked (const SRC *src, int w, int h, int sstride, DST *dest, int dstride)
void	qt_memrotate90_16 (const uchar *srcPixels, int w, int h, int sbpl, uchar *destPixels, int dbpl)
void	qt_memrotate90_32 (const uchar *srcPixels, int w, int h, int sbpl, uchar *destPixels, int dbpl)
template<class DST , class SRC >
Q_STATIC_TEMPLATE_FUNCTION void	qt_memrotate90_cachedRead (const SRC *src, int w, int h, int sstride, DST *dest, int dstride)
template<class DST , class SRC >
Q_STATIC_TEMPLATE_FUNCTION void	qt_memrotate90_cachedWrite (const SRC *src, int w, int h, int sstride, DST *dest, int dstride)
void Q_GUI_EXPORT	qt_memrotate90_gl (const quint32 *src, int srcWidth, int srcHeight, int srcStride, quint32 *dest, int dstStride)
template<class DST , class SRC >
Q_STATIC_TEMPLATE_FUNCTION void	qt_memrotate90_packing (const SRC *src, int w, int h, int sstride, DST *dest, int dstride)
template<class DST , class SRC >
Q_STATIC_TEMPLATE_FUNCTION void	qt_memrotate90_template (const SRC *src, int srcWidth, int srcHeight, int srcStride, DST *dest, int dstStride)
template<>
Q_STATIC_TEMPLATE_SPECIALIZATION void	qt_memrotate90_template< quint18, quint32 > (const quint32 *src, int srcWidth, int srcHeight, int srcStride, quint18 *dest, int dstStride)
template<>
Q_STATIC_TEMPLATE_SPECIALIZATION void	qt_memrotate90_template< quint24, quint24 > (const quint24 *src, int srcWidth, int srcHeight, int srcStride, quint24 *dest, int dstStride)
template<>
Q_STATIC_TEMPLATE_SPECIALIZATION void	qt_memrotate90_template< quint24, quint32 > (const quint32 *src, int srcWidth, int srcHeight, int srcStride, quint24 *dest, int dstStride)
template<class DST , class SRC >
Q_STATIC_TEMPLATE_FUNCTION void	qt_memrotate90_tiled (const SRC *src, int w, int h, int sstride, DST *dest, int dstride)
template<class DST , class SRC >
Q_STATIC_TEMPLATE_FUNCTION void	qt_memrotate90_tiled_unpacked (const SRC *src, int w, int h, int sstride, DST *dest, int dstride)

Variables
struct qrgb_gl_rgba	Q_PACKED
MemRotateFunc	qMemRotateFunctions [QImage::NImageFormats][3]
static const int	tileSize = 32

Macro Definition Documentation

QT_IMPL_MEMROTATE

#define QT_IMPL_MEMROTATE	(		srctype,
			desttype
	)

Value:

void qt_memrotate90(const srctype *src, int w, int h, int sstride,  \
                    desttype *dest, int dstride)                    \
{                                                                   \
    qt_memrotate90_template(src, w, h, sstride, dest, dstride);     \
}                                                                   \
void qt_memrotate180(const srctype *src, int w, int h, int sstride, \
                     desttype *dest, int dstride)                   \
{                                                                   \
    qt_memrotate180_template(src, w, h, sstride, dest, dstride);    \
}                                                                   \
void qt_memrotate270(const srctype *src, int w, int h, int sstride, \
                     desttype *dest, int dstride)                   \
{                                                                   \
    qt_memrotate270_template(src, w, h, sstride, dest, dstride);    \
}

Definition at line 514 of file qmemrotate.cpp.

QT_IMPL_SIMPLE_MEMROTATE

#define QT_IMPL_SIMPLE_MEMROTATE	(		srctype,
			desttype
	)

Value:

void qt_memrotate90(const srctype *src, int w, int h, int sstride,  \
                    desttype *dest, int dstride)                    \
{                                                                   \
    qt_memrotate90_tiled_unpacked<desttype,srctype>(src, w, h, sstride, dest, dstride); \
}                                                                   \
void qt_memrotate180(const srctype *src, int w, int h, int sstride, \
                     desttype *dest, int dstride)                   \
{                                                                   \
    qt_memrotate180_template(src, w, h, sstride, dest, dstride);    \
}                                                                   \
void qt_memrotate270(const srctype *src, int w, int h, int sstride, \
                     desttype *dest, int dstride)                   \
{                                                                   \
    qt_memrotate270_tiled_unpacked<desttype,srctype>(src, w, h, sstride, dest, dstride); \
}

Definition at line 531 of file qmemrotate.cpp.

Function Documentation

qt_memrotate180_16()

void qt_memrotate180_16	(	const uchar *	srcPixels,
		int	w,
		int	h,
		int	sbpl,
		uchar *	destPixels,
		int	dbpl
	)

Definition at line 602 of file qmemrotate.cpp.

{
    qt_memrotate180((const ushort *)srcPixels, w, h, sbpl, (ushort *)destPixels, dbpl);
}

qt_memrotate180_32()

void qt_memrotate180_32	(	const uchar *	srcPixels,
		int	w,
		int	h,
		int	sbpl,
		uchar *	destPixels,
		int	dbpl
	)

Definition at line 617 of file qmemrotate.cpp.

{
    qt_memrotate180((const uint *)srcPixels, w, h, sbpl, (uint *)destPixels, dbpl);
}

qt_memrotate180_template()

template<class DST , class SRC >

Q_STATIC_TEMPLATE_FUNCTION void qt_memrotate180_template ( const SRC *  src, int  w, int  h, int  sstride, DST *  dest, int  dstride  )

inline

Definition at line 409 of file qmemrotate.cpp.

{
    const char *s = (const char*)(src) + (h - 1) * sstride;
    for (int y = h - 1; y >= 0; --y) {
        DST *d = reinterpret_cast<DST*>((char *)(dest) + (h - y - 1) * dstride);
        src = reinterpret_cast<const SRC*>(s);
        for (int x = w - 1; x >= 0; --x) {
            d[w - x - 1] = qt_colorConvert<DST,SRC>(src[x], 0);
        }
        s -= sstride;
    }
}

qt_memrotate270_16()

void qt_memrotate270_16	(	const uchar *	srcPixels,
		int	w,
		int	h,
		int	sbpl,
		uchar *	destPixels,
		int	dbpl
	)

Definition at line 607 of file qmemrotate.cpp.

{
    qt_memrotate270((const ushort *)srcPixels, w, h, sbpl, (ushort *)destPixels, dbpl);
}

qt_memrotate270_32()

void qt_memrotate270_32	(	const uchar *	srcPixels,
		int	w,
		int	h,
		int	sbpl,
		uchar *	destPixels,
		int	dbpl
	)

Definition at line 622 of file qmemrotate.cpp.

{
    qt_memrotate270((const uint *)srcPixels, w, h, sbpl, (uint *)destPixels, dbpl);
}

qt_memrotate270_cachedRead()

template<class DST , class SRC >

Q_STATIC_TEMPLATE_FUNCTION void qt_memrotate270_cachedRead ( const SRC *  src, int  w, int  h, int  sstride, DST *  dest, int  dstride  )

inline

Definition at line 74 of file qmemrotate.cpp.

{
    const char *s = reinterpret_cast<const char*>(src);
    char *d = reinterpret_cast<char*>(dest);
    s += (h - 1) * sstride;
    for (int y = h - 1; y >= 0; --y) {
        src = reinterpret_cast<const SRC*>(s);
        for (int x = 0; x < w; ++x) {
            DST *destline = reinterpret_cast<DST*>(d + x * dstride);
            destline[h - y - 1] = qt_colorConvert<DST,SRC>(src[x], 0);
        }
        s -= sstride;
    }
}

qt_memrotate270_cachedWrite()

template<class DST , class SRC >

Q_STATIC_TEMPLATE_FUNCTION void qt_memrotate270_cachedWrite ( const SRC *  src, int  w, int  h, int  sstride, DST *  dest, int  dstride  )

inline

Definition at line 108 of file qmemrotate.cpp.

{
    for (int x = 0; x < w; ++x) {
        DST *d = dest + x * dstride;
        for (int y = h - 1; y >= 0; --y) {
            *d++ = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
        }
    }
}

qt_memrotate270_packing()

template<class DST , class SRC >

Q_STATIC_TEMPLATE_FUNCTION void qt_memrotate270_packing ( const SRC *  src, int  w, int  h, int  sstride, DST *  dest, int  dstride  )

inline

Definition at line 168 of file qmemrotate.cpp.

{
    sstride /= sizeof(SRC);
    dstride /= sizeof(DST);

    const int pack = sizeof(quint32) / sizeof(DST);
    const int unaligned = int((long(dest) & (sizeof(quint32)-1))) / sizeof(DST);

    for (int x = 0; x < w; ++x) {
        int y = h - 1;

        for (int i = 0; i < unaligned; ++i) {
            dest[x * dstride + h - y - 1]
                = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
            --y;
        }

        quint32 *d = reinterpret_cast<quint32*>(dest + x * dstride
                                                + unaligned);
        const int rest = (h - unaligned) % pack;
        while (y > rest) {
            quint32 c = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
            for (int i = 1; i < pack; ++i) {
                c |= qt_colorConvert<DST,SRC>(src[(y - i) * sstride + x], 0)
                     << (sizeof(int) * 8 / pack * i);
            }
            *d++ = c;
            y -= pack;
        }
        while (y >= 0) {
            dest[x * dstride + h - y - 1]
                = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
            --y;
        }
    }
}

qt_memrotate270_template()

template<class DST , class SRC >

Q_STATIC_TEMPLATE_FUNCTION void qt_memrotate270_template ( const SRC *  src, int  srcWidth, int  srcHeight, int  srcStride, DST *  dest, int  dstStride  )

inline

Definition at line 425 of file qmemrotate.cpp.

{
#if QT_ROTATION_ALGORITHM == QT_ROTATION_CACHEDREAD
    qt_memrotate270_cachedRead<DST,SRC>(src, srcWidth, srcHeight, srcStride,
                                        dest, dstStride);
#elif QT_ROTATION_ALGORITHM == QT_ROTATION_CACHEDWRITE
    qt_memrotate270_cachedWrite<DST,SRC>(src, srcWidth, srcHeight, srcStride,
                                         dest, dstStride);
#elif QT_ROTATION_ALGORITHM == QT_ROTATION_PACKING
    qt_memrotate270_packing<DST,SRC>(src, srcWidth, srcHeight, srcStride,
                                     dest, dstStride);
#elif QT_ROTATION_ALGORITHM == QT_ROTATION_TILED
    qt_memrotate270_tiled_unpacked<DST,SRC>(src, srcWidth, srcHeight,
                                            srcStride,
                                            dest, dstStride);
#endif
}

qt_memrotate270_tiled()

template<class DST , class SRC >

Q_STATIC_TEMPLATE_FUNCTION void qt_memrotate270_tiled ( const SRC *  src, int  w, int  h, int  sstride, DST *  dest, int  dstride  )

inline

Definition at line 299 of file qmemrotate.cpp.

{
    sstride /= sizeof(SRC);
    dstride /= sizeof(DST);

    const int pack = sizeof(quint32) / sizeof(DST);
    const int unaligned =
        qMin(uint((long(dest) & (sizeof(quint32)-1)) / sizeof(DST)), uint(h));
    const int restX = w % tileSize;
    const int restY = (h - unaligned) % tileSize;
    const int unoptimizedY = restY % pack;
    const int numTilesX = w / tileSize + (restX > 0);
    const int numTilesY = (h - unaligned) / tileSize + (restY >= pack);

    for (int tx = 0; tx < numTilesX; ++tx) {
        const int startx = tx * tileSize;
        const int stopx = qMin(startx + tileSize, w);

        if (unaligned) {
            for (int x = startx; x < stopx; ++x) {
                DST *d = dest + x * dstride;
                for (int y = h - 1; y >= h - unaligned; --y) {
                    *d++ = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
                }
            }
        }

        for (int ty = 0; ty < numTilesY; ++ty) {
            const int starty = h - 1 - unaligned - ty * tileSize;
            const int stopy = qMax(starty - tileSize, unoptimizedY);

            for (int x = startx; x < stopx; ++x) {
                quint32 *d = reinterpret_cast<quint32*>(dest + x * dstride
                                                        + h - 1 - starty);
                for (int y = starty; y > stopy; y -= pack) {
                    quint32 c = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
                    for (int i = 1; i < pack; ++i) {
                        const int shift = (sizeof(int) * 8 / pack * i);
                        const DST color = qt_colorConvert<DST,SRC>(src[(y - i) * sstride + x], 0);
                        c |= color << shift;
                    }
                    *d++ = c;
                }
            }
        }
        if (unoptimizedY) {
            const int starty = unoptimizedY - 1;
            for (int x = startx; x < stopx; ++x) {
                DST *d = dest + x * dstride + h - 1 - starty;
                for (int y = starty; y >= 0; --y) {
                    *d++ = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
                }
            }
        }
    }
}

qt_memrotate270_tiled_unpacked()

template<class DST , class SRC >

Q_STATIC_TEMPLATE_FUNCTION void qt_memrotate270_tiled_unpacked ( const SRC *  src, int  w, int  h, int  sstride, DST *  dest, int  dstride  )

inline

Definition at line 359 of file qmemrotate.cpp.

{
    const int numTilesX = (w + tileSize - 1) / tileSize;
    const int numTilesY = (h + tileSize - 1) / tileSize;

    for (int tx = 0; tx < numTilesX; ++tx) {
        const int startx = tx * tileSize;
        const int stopx = qMin(startx + tileSize, w);

        for (int ty = 0; ty < numTilesY; ++ty) {
            const int starty = h - 1 - ty * tileSize;
            const int stopy = qMax(starty - tileSize, 0);

            for (int x = startx; x < stopx; ++x) {
                DST *d = (DST*)((char*)dest + x * dstride) + h - 1 - starty;
                const char *s = (const char*)(src + x) + starty * sstride;
                for (int y = starty; y >= stopy; --y) {
                    *d++ = qt_colorConvert<DST,SRC>(*(const SRC*)s, 0);
                    s -= sstride;
                }
            }
        }
    }
}

qt_memrotate90_16()

void qt_memrotate90_16	(	const uchar *	srcPixels,
		int	w,
		int	h,
		int	sbpl,
		uchar *	destPixels,
		int	dbpl
	)

Definition at line 597 of file qmemrotate.cpp.

{
    qt_memrotate90((const ushort *)srcPixels, w, h, sbpl, (ushort *)destPixels, dbpl);
}

qt_memrotate90_32()

void qt_memrotate90_32	(	const uchar *	srcPixels,
		int	w,
		int	h,
		int	sbpl,
		uchar *	destPixels,
		int	dbpl
	)

Definition at line 612 of file qmemrotate.cpp.

{
    qt_memrotate90((const uint *)srcPixels, w, h, sbpl, (uint *)destPixels, dbpl);
}

qt_memrotate90_cachedRead()

template<class DST , class SRC >

Q_STATIC_TEMPLATE_FUNCTION void qt_memrotate90_cachedRead ( const SRC *  src, int  w, int  h, int  sstride, DST *  dest, int  dstride  )

inline

Definition at line 57 of file qmemrotate.cpp.

{
    const char *s = reinterpret_cast<const char*>(src);
    char *d = reinterpret_cast<char*>(dest);
    for (int y = 0; y < h; ++y) {
        for (int x = w - 1; x >= 0; --x) {
            DST *destline = reinterpret_cast<DST*>(d + (w - x - 1) * dstride);
            destline[y] = qt_colorConvert<DST,SRC>(src[x], 0);
        }
        s += sstride;
        src = reinterpret_cast<const SRC*>(s);
    }
}

qt_memrotate90_cachedWrite()

template<class DST , class SRC >

Q_STATIC_TEMPLATE_FUNCTION void qt_memrotate90_cachedWrite ( const SRC *  src, int  w, int  h, int  sstride, DST *  dest, int  dstride  )

inline

Definition at line 94 of file qmemrotate.cpp.

{
    for (int x = w - 1; x >= 0; --x) {
        DST *d = dest + (w - x - 1) * dstride;
        for (int y = 0; y < h; ++y) {
            *d++ = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
        }
    }

}

qt_memrotate90_gl()

void Q_GUI_EXPORT qt_memrotate90_gl	(	const quint32 *	src,
		int	srcWidth,
		int	srcHeight,
		int	srcStride,
		quint32 *	dest,
		int	dstStride
	)

Definition at line 591 of file qmemrotate.cpp.

Referenced by nextMultiple(), and QGLPixmapBlurFilter::processGL().

{
    qt_memrotate90_template(src, srcWidth, srcHeight, srcStride, reinterpret_cast<qrgb_gl_rgba *>(dest), dstStride);
}

qt_memrotate90_packing()

template<class DST , class SRC >

Q_STATIC_TEMPLATE_FUNCTION void qt_memrotate90_packing ( const SRC *  src, int  w, int  h, int  sstride, DST *  dest, int  dstride  )

inline

Definition at line 127 of file qmemrotate.cpp.

{
    sstride /= sizeof(SRC);
    dstride /= sizeof(DST);

    const int pack = sizeof(quint32) / sizeof(DST);
    const int unaligned = int((long(dest) & (sizeof(quint32)-1))) / sizeof(DST);

    for (int x = w - 1; x >= 0; --x) {
        int y = 0;

        for (int i = 0; i < unaligned; ++i) {
            dest[(w - x - 1) * dstride + y]
                = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
            ++y;
        }

        quint32 *d = reinterpret_cast<quint32*>(dest + (w - x - 1) * dstride
                                                + unaligned);
        const int rest = (h - unaligned) % pack;
        while (y < h - rest) {
            quint32 c = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
            for (int i = 1; i < pack; ++i) {
                c |= qt_colorConvert<DST,SRC>(src[(y + i) * sstride + x], 0)
                     << (sizeof(int) * 8 / pack * i);
            }
            *d++ = c;
            y += pack;
        }

        while (y < h) {
            dest[(w - x - 1) * dstride + y]
                = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
            ++y;
        }
    }
}

qt_memrotate90_template()

template<class DST , class SRC >

Q_STATIC_TEMPLATE_FUNCTION void qt_memrotate90_template ( const SRC *  src, int  srcWidth, int  srcHeight, int  srcStride, DST *  dest, int  dstStride  )

inline

Definition at line 389 of file qmemrotate.cpp.

Referenced by qt_memrotate90_gl().

{
#if QT_ROTATION_ALGORITHM == QT_ROTATION_CACHEDREAD
    qt_memrotate90_cachedRead<DST,SRC>(src, srcWidth, srcHeight, srcStride,
                                       dest, dstStride);
#elif QT_ROTATION_ALGORITHM == QT_ROTATION_CACHEDWRITE
    qt_memrotate90_cachedWrite<DST,SRC>(src, srcWidth, srcHeight, srcStride,
                                        dest, dstStride);
#elif QT_ROTATION_ALGORITHM == QT_ROTATION_PACKING
    qt_memrotate90_packing<DST,SRC>(src, srcWidth, srcHeight, srcStride,
                                    dest, dstStride);
#elif QT_ROTATION_ALGORITHM == QT_ROTATION_TILED
    qt_memrotate90_tiled<DST,SRC>(src, srcWidth, srcHeight, srcStride,
                                  dest, dstStride);
#endif
}

qt_memrotate90_template< quint18, quint32 >()

template<>

Q_STATIC_TEMPLATE_SPECIALIZATION void qt_memrotate90_template< quint18, quint32 > ( const quint32 *  src, int  srcWidth, int  srcHeight, int  srcStride, quint18 *  dest, int  dstStride  )

inline

Definition at line 493 of file qmemrotate.cpp.

{
#if QT_ROTATION_ALGORITHM == QT_ROTATION_CACHEDREAD
    qt_memrotate90_cachedRead<quint18,quint32>(src, srcWidth, srcHeight,
                                               srcStride, dest, dstStride);
#elif QT_ROTATION_ALGORITHM == QT_ROTATION_CACHEDWRITE
    qt_memrotate90_cachedWrite<quint18,quint32>(src, srcWidth, srcHeight,
                                                srcStride, dest, dstStride);
#elif QT_ROTATION_ALGORITHM == QT_ROTATION_PACKING
    // packed algorithm not implemented
    qt_memrotate90_cachedRead<quint18,quint32>(src, srcWidth, srcHeight,
                                               srcStride, dest, dstStride);
#elif QT_ROTATION_ALGORITHM == QT_ROTATION_TILED
    // packed algorithm not implemented
    qt_memrotate90_tiled_unpacked<quint18,quint32>(src, srcWidth, srcHeight,
                                                   srcStride, dest, dstStride);
#endif
}

qt_memrotate90_template< quint24, quint24 >()

template<>

Q_STATIC_TEMPLATE_SPECIALIZATION void qt_memrotate90_template< quint24, quint24 > ( const quint24 *  src, int  srcWidth, int  srcHeight, int  srcStride, quint24 *  dest, int  dstStride  )

inline

Definition at line 447 of file qmemrotate.cpp.

{
#if QT_ROTATION_ALGORITHM == QT_ROTATION_CACHEDREAD
    qt_memrotate90_cachedRead<quint24,quint24>(src, srcWidth, srcHeight,
                                               srcStride, dest, dstStride);
#elif QT_ROTATION_ALGORITHM == QT_ROTATION_CACHEDWRITE
    qt_memrotate90_cachedWrite<quint24,quint24>(src, srcWidth, srcHeight,
                                                srcStride, dest, dstStride);
#elif QT_ROTATION_ALGORITHM == QT_ROTATION_PACKING
    // packed algorithm not implemented
    qt_memrotate90_cachedRead<quint24,quint24>(src, srcWidth, srcHeight,
                                               srcStride, dest, dstStride);
#elif QT_ROTATION_ALGORITHM == QT_ROTATION_TILED
    // packed algorithm not implemented
    qt_memrotate90_tiled_unpacked<quint24,quint24>(src, srcWidth, srcHeight,
                                                   srcStride, dest, dstStride);
#endif
}

qt_memrotate90_template< quint24, quint32 >()

template<>

Q_STATIC_TEMPLATE_SPECIALIZATION void qt_memrotate90_template< quint24, quint32 > ( const quint32 *  src, int  srcWidth, int  srcHeight, int  srcStride, quint24 *  dest, int  dstStride  )

inline

Definition at line 470 of file qmemrotate.cpp.

{
#if QT_ROTATION_ALGORITHM == QT_ROTATION_CACHEDREAD
    qt_memrotate90_cachedRead<quint24,quint32>(src, srcWidth, srcHeight,
                                               srcStride, dest, dstStride);
#elif QT_ROTATION_ALGORITHM == QT_ROTATION_CACHEDWRITE
    qt_memrotate90_cachedWrite<quint24,quint32>(src, srcWidth, srcHeight,
                                                srcStride, dest, dstStride);
#elif QT_ROTATION_ALGORITHM == QT_ROTATION_PACKING
    // packed algorithm not implemented
    qt_memrotate90_cachedRead<quint24,quint32>(src, srcWidth, srcHeight,
                                               srcStride, dest, dstStride);
#elif QT_ROTATION_ALGORITHM == QT_ROTATION_TILED
    // packed algorithm not implemented
    qt_memrotate90_tiled_unpacked<quint24,quint32>(src, srcWidth, srcHeight,
                                                   srcStride, dest, dstStride);
#endif
}

qt_memrotate90_tiled()

template<class DST , class SRC >

Q_STATIC_TEMPLATE_FUNCTION void qt_memrotate90_tiled ( const SRC *  src, int  w, int  h, int  sstride, DST *  dest, int  dstride  )

inline

Definition at line 211 of file qmemrotate.cpp.

{
    sstride /= sizeof(SRC);
    dstride /= sizeof(DST);

    const int pack = sizeof(quint32) / sizeof(DST);
    const int unaligned =
        qMin(uint((quintptr(dest) & (sizeof(quint32)-1)) / sizeof(DST)), uint(h));
    const int restX = w % tileSize;
    const int restY = (h - unaligned) % tileSize;
    const int unoptimizedY = restY % pack;
    const int numTilesX = w / tileSize + (restX > 0);
    const int numTilesY = (h - unaligned) / tileSize + (restY >= pack);

    for (int tx = 0; tx < numTilesX; ++tx) {
        const int startx = w - tx * tileSize - 1;
        const int stopx = qMax(startx - tileSize, 0);

        if (unaligned) {
            for (int x = startx; x >= stopx; --x) {
                DST *d = dest + (w - x - 1) * dstride;
                for (int y = 0; y < unaligned; ++y) {
                    *d++ = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
                }
            }
        }

        for (int ty = 0; ty < numTilesY; ++ty) {
            const int starty = ty * tileSize + unaligned;
            const int stopy = qMin(starty + tileSize, h - unoptimizedY);

            for (int x = startx; x >= stopx; --x) {
                quint32 *d = reinterpret_cast<quint32*>(dest + (w - x - 1) * dstride + starty);
                for (int y = starty; y < stopy; y += pack) {
                    quint32 c = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
                    for (int i = 1; i < pack; ++i) {
                        const int shift = (sizeof(int) * 8 / pack * i);
                        const DST color = qt_colorConvert<DST,SRC>(src[(y + i) * sstride + x], 0);
                        c |= color << shift;
                    }
                    *d++ = c;
                }
            }
        }

        if (unoptimizedY) {
            const int starty = h - unoptimizedY;
            for (int x = startx; x >= stopx; --x) {
                DST *d = dest + (w - x - 1) * dstride + starty;
                for (int y = starty; y < h; ++y) {
                    *d++ = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
                }
            }
        }
    }
}

qt_memrotate90_tiled_unpacked()

template<class DST , class SRC >

Q_STATIC_TEMPLATE_FUNCTION void qt_memrotate90_tiled_unpacked ( const SRC *  src, int  w, int  h, int  sstride, DST *  dest, int  dstride  )

inline

Definition at line 271 of file qmemrotate.cpp.

{
    const int numTilesX = (w + tileSize - 1) / tileSize;
    const int numTilesY = (h + tileSize - 1) / tileSize;

    for (int tx = 0; tx < numTilesX; ++tx) {
        const int startx = w - tx * tileSize - 1;
        const int stopx = qMax(startx - tileSize, 0);

        for (int ty = 0; ty < numTilesY; ++ty) {
            const int starty = ty * tileSize;
            const int stopy = qMin(starty + tileSize, h);

            for (int x = startx; x >= stopx; --x) {
                DST *d = (DST*)((char*)dest + (w - x - 1) * dstride) + starty;
                const char *s = (const char*)(src + x) + starty * sstride;
                for (int y = starty; y < stopy; ++y) {
                    *d++ = qt_colorConvert<DST,SRC>(*(const SRC*)(s), 0);
                    s += sstride;
                }
            }
        }
    }
}

Variable Documentation

Q_PACKED

struct qrgb_gl_rgba Q_PACKED

qMemRotateFunctions

MemRotateFunc qMemRotateFunctions[QImage::NImageFormats][3]

Initial value:

=

{
    { 0, 0, 0 },      
    { 0, 0, 0 },      
    { 0, 0, 0 },      
    { 0, 0, 0 },      
    { qt_memrotate90_32, qt_memrotate180_32, qt_memrotate270_32 },      
    { qt_memrotate90_32, qt_memrotate180_32, qt_memrotate270_32 },      
    { qt_memrotate90_32, qt_memrotate180_32, qt_memrotate270_32 },      
    { qt_memrotate90_16, qt_memrotate180_16, qt_memrotate270_16 },      
    { 0, 0, 0 },      
    { 0, 0, 0 },      
    { 0, 0, 0 },      
    { 0, 0, 0 },      
    { 0, 0, 0 },      
    { 0, 0, 0 },      
    { 0, 0, 0 },      
    { 0, 0, 0 }       
}

Definition at line 627 of file qmemrotate.cpp.

Referenced by QRasterPaintEngine::drawImage(), and qInitDrawhelperAsm().

tileSize

const int tileSize = 32

static

Definition at line 47 of file qmemrotate.cpp.

Referenced by QAlphaPaintEnginePrivate::drawAlphaImage(), QWin32PrintEngine::drawPixmap(), qt_memrotate270_tiled(), qt_memrotate270_tiled_unpacked(), qt_memrotate90_tiled(), and qt_memrotate90_tiled_unpacked().