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** contained in the Technology Preview License Agreement accompanying
** this package.
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** General Public License version 2.1 as published by the Free Software
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#include "private/qmemrotate_p.h"
QT_BEGIN_NAMESPACE
#if QT_ROTATION_ALGORITHM == QT_ROTATION_TILED
static const int tileSize = 32;
#endif
#if Q_BYTE_ORDER == Q_BIG_ENDIAN
#if QT_ROTATION_ALGORITHM == QT_ROTATION_PACKED || QT_ROTATION_ALGORITHM == QT_ROTATION_TILED
#error Big endian version not implemented for the transformed driver!
#endif
#endif
template <class DST, class SRC>
Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate90_cachedRead(const SRC *src, int w, int h,
int sstride,
DST *dest, int dstride)
{
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);
}
}
template <class DST, class SRC>
Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate270_cachedRead(const SRC *src, int w, int h,
int sstride,
DST *dest, int dstride)
{
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;
}
}
#if QT_ROTATION_ALGORITHM == QT_ROTATION_CACHEDWRITE
template <class DST, class SRC>
Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate90_cachedWrite(const SRC *src, int w, int h,
int sstride,
DST *dest, int dstride)
{
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);
}
}
}
template <class DST, class SRC>
Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate270_cachedWrite(const SRC *src, int w, int h,
int sstride,
DST *dest, int dstride)
{
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);
}
}
}
#endif // QT_ROTATION_CACHEDWRITE
#if QT_ROTATION_ALGORITHM == QT_ROTATION_PACKING
// TODO: packing algorithms should probably be modified on 64-bit architectures
template <class DST, class SRC>
Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate90_packing(const SRC *src, int w, int h,
int sstride,
DST *dest, int dstride)
{
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;
}
}
}
template <class DST, class SRC>
Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate270_packing(const SRC *src, int w, int h,
int sstride,
DST *dest, int dstride)
{
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;
}
}
}
#endif // QT_ROTATION_PACKING
#if QT_ROTATION_ALGORITHM == QT_ROTATION_TILED
template <class DST, class SRC>
Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate90_tiled(const SRC *src, int w, int h,
int sstride,
DST *dest, int dstride)
{
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);
}
}
}
}
}
template <class DST, class SRC>
Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate90_tiled_unpacked(const SRC *src, int w, int h,
int sstride,
DST *dest, int dstride)
{
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;
}
}
}
}
}
template <class DST, class SRC>
Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate270_tiled(const SRC *src, int w, int h,
int sstride,
DST *dest, int dstride)
{
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);
}
}
}
}
}
template <class DST, class SRC>
Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate270_tiled_unpacked(const SRC *src, int w, int h,
int sstride,
DST *dest, int dstride)
{
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;
}
}
}
}
}
#endif // QT_ROTATION_ALGORITHM
template <class DST, class SRC>
Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate90_template(const SRC *src,
int srcWidth, int srcHeight, int srcStride,
DST *dest, int dstStride)
{
#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
}
template <class DST, class SRC>
Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate180_template(const SRC *src,
int w, int h, int sstride,
DST *dest, int dstride)
{
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;
}
}
template <class DST, class SRC>
Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate270_template(const SRC *src,
int srcWidth, int srcHeight, int srcStride,
DST *dest, int dstStride)
{
#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
}
template <>
Q_STATIC_TEMPLATE_SPECIALIZATION
inline void qt_memrotate90_template<quint24, quint24>(const quint24 *src,
int srcWidth, int srcHeight, int srcStride,
quint24 *dest, int dstStride)
{
#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
}
template <>
Q_STATIC_TEMPLATE_SPECIALIZATION
inline void qt_memrotate90_template<quint24, quint32>(const quint32 *src,
int srcWidth, int srcHeight, int srcStride,
quint24 *dest, int dstStride)
{
#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
}
template <>
Q_STATIC_TEMPLATE_SPECIALIZATION
inline void qt_memrotate90_template<quint18, quint32>(const quint32 *src,
int srcWidth, int srcHeight, int srcStride,
quint18 *dest, int dstStride)
{
#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
}
#define QT_IMPL_MEMROTATE(srctype, desttype) \
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); \
}
#define QT_IMPL_SIMPLE_MEMROTATE(srctype, desttype) \
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); \
}
QT_IMPL_MEMROTATE(quint32, quint32)
QT_IMPL_MEMROTATE(quint32, quint16)
QT_IMPL_MEMROTATE(quint16, quint32)
QT_IMPL_MEMROTATE(quint16, quint16)
QT_IMPL_MEMROTATE(quint24, quint24)
QT_IMPL_MEMROTATE(quint32, quint24)
QT_IMPL_MEMROTATE(quint32, quint18)
QT_IMPL_MEMROTATE(quint32, quint8)
QT_IMPL_MEMROTATE(quint16, quint8)
QT_IMPL_MEMROTATE(qrgb444, quint8)
QT_IMPL_MEMROTATE(quint8, quint8)
#if defined(QT_QWS_ROTATE_BGR)
QT_IMPL_SIMPLE_MEMROTATE(quint16, qbgr565)
QT_IMPL_SIMPLE_MEMROTATE(quint32, qbgr565)
QT_IMPL_SIMPLE_MEMROTATE(qrgb555, qbgr555)
QT_IMPL_SIMPLE_MEMROTATE(quint32, qbgr555)
#endif
#ifdef QT_QWS_DEPTH_GENERIC
QT_IMPL_MEMROTATE(quint32, qrgb_generic16)
QT_IMPL_MEMROTATE(quint16, qrgb_generic16)
#endif
struct qrgb_gl_rgba
{
public:
inline qrgb_gl_rgba(quint32 v) {
if (QSysInfo::ByteOrder == QSysInfo::LittleEndian)
data = ((v << 16) & 0xff0000) | ((v >> 16) & 0xff) | (v & 0xff00ff00);
else
data = (v << 8) | ((v >> 24) & 0xff);
}
inline operator quint32() const { return data; }
private:
quint32 data;
} Q_PACKED;
void Q_GUI_EXPORT qt_memrotate90_gl(const quint32 *src, int srcWidth, int srcHeight, int srcStride,
quint32 *dest, int dstStride)
{
qt_memrotate90_template(src, srcWidth, srcHeight, srcStride, reinterpret_cast<qrgb_gl_rgba *>(dest), dstStride);
}
QT_END_NAMESPACE