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Make convert_generic_to_rgb64 more generic

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This makes it possible to get rid of specialized functions for
converting to RGBA64PM, while at the same time making the conversion
faster as the painter routines are better optimized.

Change-Id: I3e73856b2c1411977450e72af1741aab0ecf537e
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
This commit is contained in:
Allan Sandfeld Jensen 2018-10-12 11:10:07 +02:00
parent e6a7b61d27
commit c961d1a6d2
3 changed files with 35 additions and 110 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/gui/image/qimage.cpp
View File

@ -2062,13 +2062,7 @@ QImage QImage::convertToFormat_helper(Format format, Qt::ImageConversionFlags fl
Image_Converter converter = qimage_converter_map[d->format][format];
if (!converter && format > QImage::Format_Indexed8 && d->format > QImage::Format_Indexed8) {
if (highColorPrecision(format) && highColorPrecision(d->format)) {
// Convert over RGBA64_Premultiplied
if (format == QImage::Format_RGBA64_Premultiplied)
converter = convert_generic_to_rgb64;
else {
Q_ASSERT(d->format != QImage::Format_RGBA64_Premultiplied);
return convertToFormat(Format_RGBA64_Premultiplied, flags).convertToFormat(format, flags);
}
converter = convert_generic_to_rgb64;
} else
converter = convert_generic;
}

127
src/gui/image/qimage_conversions.cpp
View File

@ -223,18 +223,29 @@ void convert_generic(QImageData *dest, const QImageData *src, Qt::ImageConversio
void convert_generic_to_rgb64(QImageData *dest, const QImageData *src, Qt::ImageConversionFlags)
{
Q_ASSERT(dest->format == QImage::Format_RGBA64_Premultiplied);
Q_ASSERT(dest->format > QImage::Format_Indexed8);
Q_ASSERT(src->format > QImage::Format_Indexed8);
QRgba64 buf[BufferSize];
QRgba64 *buffer = buf;
const QPixelLayout *srcLayout = &qPixelLayouts[src->format];
const QPixelLayout *destLayout = &qPixelLayouts[dest->format];
const uchar *srcData = src->data;
uchar *destData = dest->data;
const FetchAndConvertPixelsFunc64 fetch = srcLayout->fetchToRGBA64PM;
const ConvertAndStorePixelsFunc64 store = qStoreFromRGBA64PM[dest->format];
for (int y = 0; y < src->height; ++y) {
const QRgba64 *ptr = fetch((QRgba64*)destData, srcData, 0, src->width, nullptr, nullptr);
if (ptr != (const QRgba64*)destData) {
memcpy(destData, ptr, dest->bytes_per_line);
int x = 0;
while (x < src->width) {
int l = src->width - x;
if (destLayout->bpp == QPixelLayout::BPP64)
buffer = reinterpret_cast<QRgba64 *>(destData) + x;
else
l = qMin(l, BufferSize);
const QRgba64 *ptr = fetch(buffer, srcData, x, l, nullptr, nullptr);
store(destData, ptr, x, l, nullptr, nullptr);
x += l;
}
srcData += src->bytes_per_line;
destData += dest->bytes_per_line;
@ -1204,33 +1215,6 @@ static void convert_RGBA64_to_ARGB32(QImageData *dest, const QImageData *src, Qt
}
}
template<bool RGBA>
static void convert_RGBA64PM_to_ARGB32(QImageData *dest, const QImageData *src, Qt::ImageConversionFlags)
{
Q_ASSERT(src->format == QImage::Format_RGBA64_Premultiplied);
Q_ASSERT(RGBA || dest->format == QImage::Format_ARGB32);
Q_ASSERT(!RGBA || dest->format == QImage::Format_RGBA8888);
Q_ASSERT(src->width == dest->width);
Q_ASSERT(src->height == dest->height);
const int src_pad = (src->bytes_per_line >> 3) - src->width;
const int dest_pad = (dest->bytes_per_line >> 2) - dest->width;
const QRgba64 *src_data = reinterpret_cast<const QRgba64 *>(src->data);
uint *dest_data = reinterpret_cast<uint *>(dest->data);
for (int i = 0; i < src->height; ++i) {
const QRgba64 *end = src_data + src->width;
while (src_data < end) {
QRgba64 s = src_data->unpremultiplied();
*dest_data = RGBA ? ARGB2RGBA(s.toArgb32()) : s.toArgb32();
++src_data;
++dest_data;
}
src_data += src_pad;
dest_data += dest_pad;
}
}
template<bool RGBA>
static void convert_ARGB32_to_RGBA64(QImageData *dest, const QImageData *src, Qt::ImageConversionFlags)
{
@ -1240,74 +1224,14 @@ static void convert_ARGB32_to_RGBA64(QImageData *dest, const QImageData *src, Qt
Q_ASSERT(src->width == dest->width);
Q_ASSERT(src->height == dest->height);
const int src_pad = (src->bytes_per_line >> 2) - src->width;
const int dest_pad = (dest->bytes_per_line >> 3) - dest->width;
const uint *src_data = reinterpret_cast<const uint *>(src->data);
QRgba64 *dest_data = reinterpret_cast<QRgba64 *>(dest->data);
const uchar *src_data = src->data;
uchar *dest_data = dest->data;
const FetchAndConvertPixelsFunc64 fetch = qPixelLayouts[src->format + 1].fetchToRGBA64PM;
for (int i = 0; i < src->height; ++i) {
const uint *end = src_data + src->width;
while (src_data < end) {
if (RGBA)
*dest_data = QRgba64::fromArgb32(RGBA2ARGB(*src_data));
else
*dest_data = QRgba64::fromArgb32(*src_data);
++src_data;
++dest_data;
}
src_data += src_pad;
dest_data += dest_pad;
}
}
template<QtPixelOrder PixelOrder>
static void convert_RGBA64PM_to_RGB30(QImageData *dest, const QImageData *src, Qt::ImageConversionFlags)
{
Q_ASSERT(src->format == QImage::Format_RGBA64_Premultiplied);
Q_ASSERT(dest->format == QImage::Format_RGB30 || dest->format == QImage::Format_BGR30);
Q_ASSERT(src->width == dest->width);
Q_ASSERT(src->height == dest->height);
const int src_pad = (src->bytes_per_line >> 3) - src->width;
const int dest_pad = (dest->bytes_per_line >> 2) - dest->width;
const QRgba64 *src_data = reinterpret_cast<const QRgba64 *>(src->data);
uint *dest_data = reinterpret_cast<uint *>(dest->data);
for (int i = 0; i < src->height; ++i) {
const QRgba64 *end = src_data + src->width;
while (src_data < end) {
*dest_data = 0xc0000000 | qConvertRgb64ToRgb30<PixelOrder>(src_data->unpremultiplied());
++src_data;
++dest_data;
}
src_data += src_pad;
dest_data += dest_pad;
}
}
template<QtPixelOrder PixelOrder>
static void convert_RGBA64PM_to_A2RGB30(QImageData *dest, const QImageData *src, Qt::ImageConversionFlags)
{
Q_ASSERT(src->format == QImage::Format_RGBA64_Premultiplied);
Q_ASSERT(dest->format == QImage::Format_A2RGB30_Premultiplied
|| dest->format == QImage::Format_A2BGR30_Premultiplied);
Q_ASSERT(src->width == dest->width);
Q_ASSERT(src->height == dest->height);
const int src_pad = (src->bytes_per_line >> 3) - src->width;
const int dest_pad = (dest->bytes_per_line >> 2) - dest->width;
const QRgba64 *src_data = reinterpret_cast<const QRgba64 *>(src->data);
uint *dest_data = reinterpret_cast<uint *>(dest->data);
for (int i = 0; i < src->height; ++i) {
const QRgba64 *end = src_data + src->width;
while (src_data < end) {
*dest_data = qConvertRgb64ToRgb30<PixelOrder>(*src_data);
++src_data;
++dest_data;
}
src_data += src_pad;
dest_data += dest_pad;
fetch(reinterpret_cast<QRgba64 *>(dest_data), src_data, 0, src->width, nullptr, nullptr);
src_data += src->bytes_per_line;;
dest_data += dest->bytes_per_line;
}
}
@ -2958,7 +2882,6 @@ Image_Converter qimage_converter_map[QImage::NImageFormats][QImage::NImageFormat
0,
0,
0,
convert_RGBA64PM_to_ARGB32<false>,
0,
0,
0,
@ -2970,12 +2893,10 @@ Image_Converter qimage_converter_map[QImage::NImageFormats][QImage::NImageFormat
0,
0,
0,
convert_RGBA64PM_to_ARGB32<true>,
0,
convert_RGBA64PM_to_RGB30<PixelOrderBGR>,
convert_RGBA64PM_to_A2RGB30<PixelOrderBGR>,
convert_RGBA64PM_to_RGB30<PixelOrderRGB>,
convert_RGBA64PM_to_A2RGB30<PixelOrderRGB>,
0,
0,
0, 0, 0, 0,
0, 0,
convert_RGBA64PM_to_RGBA64<true>,
convert_RGBA64PM_to_RGBA64<false>,

10
tests/benchmarks/gui/image/qimageconversion/tst_qimageconversion.cpp
View File

@ -200,6 +200,8 @@ void tst_QImageConversion::convertRgb32_data()
QTest::newRow("argb32 -> argb8565pm") << argb32 << QImage::Format_ARGB8565_Premultiplied;
QTest::newRow("argb32 -> argb4444pm") << argb32 << QImage::Format_ARGB4444_Premultiplied;
QTest::newRow("argb32 -> argb6666pm") << argb32 << QImage::Format_ARGB6666_Premultiplied;
QTest::newRow("argb32 -> rgba64") << argb32 << QImage::Format_RGBA64;
QTest::newRow("argb32 -> rgba64pm") << argb32 << QImage::Format_RGBA64_Premultiplied;
QTest::newRow("argb32pm -> rgb16") << argb32pm << QImage::Format_RGB16;
QTest::newRow("argb32pm -> rgb32") << argb32pm << QImage::Format_RGB32;
@ -239,6 +241,7 @@ void tst_QImageConversion::convertGeneric_data()
QImage a2rgb30 = argb32.convertToFormat(QImage::Format_A2RGB30_Premultiplied);
QImage rgb666 = rgb32.convertToFormat(QImage::Format_RGB666);
QImage argb4444 = argb32.convertToFormat(QImage::Format_ARGB4444_Premultiplied);
QImage rgba64pm = argb32.convertToFormat(QImage::Format_RGBA64_Premultiplied);
QTest::newRow("indexed8 -> rgb32") << i8 << QImage::Format_RGB32;
QTest::newRow("indexed8 -> argb32") << i8 << QImage::Format_ARGB32;
@ -289,6 +292,13 @@ void tst_QImageConversion::convertGeneric_data()
QTest::newRow("argb4444pm -> rgba8888pm") << argb4444 << QImage::Format_RGBA8888_Premultiplied;
QTest::newRow("argb4444pm -> rgb30") << argb4444 << QImage::Format_RGB30;
QTest::newRow("argb4444pm -> a2bgr30") << argb4444 << QImage::Format_A2BGR30_Premultiplied;
QTest::newRow("rgba64pm -> argb32") << rgba64pm << QImage::Format_ARGB32;
QTest::newRow("rgba64pm -> rgbx8888") << rgba64pm << QImage::Format_RGBX8888;
QTest::newRow("rgba64pm -> rgba8888pm") << rgba64pm << QImage::Format_RGBA8888_Premultiplied;
QTest::newRow("rgba64pm -> rgb30") << rgba64pm << QImage::Format_RGB30;
QTest::newRow("rgba64pm -> a2bgr30") << rgba64pm << QImage::Format_A2BGR30_Premultiplied;
QTest::newRow("rgba64pm -> rgba64") << rgba64pm << QImage::Format_RGBA64;
}
void tst_QImageConversion::convertGeneric()