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gerrit.openbmc.org / openbmc / openbmc / 353dbdaaa97d78d064f0638221f57311f21f0bb3 / . / yocto-poky / meta / recipes-qt / qt4 / qt4-4.8.7 / 0012-Add-2bpp-support.patch
blob: 8e411f342637c64f755bb887b4e7f239d8245be0 [file] [log] [blame]
From 8744273fc452eb54bbeeb7d15823009ce926c6fa Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jeremy=20Lain=C3=A9?= <jeremy.laine@m4x.org>
Date: Wed, 26 Sep 2012 20:39:21 +0200
Subject: [PATCH 12/21] Add 2bpp support
Submitted upstream but rejected as being "out of scope":
https://bugreports.qt-project.org/browse/QTBUG-3468
Upstream-Status: Denied
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
---
configure | 5 +-
src/gui/embedded/qscreen_qws.cpp | 211 ++++++++++++++++++++++++++++++++
src/gui/embedded/qscreenlinuxfb_qws.cpp | 4 +-
3 files changed, 216 insertions(+), 4 deletions(-)
diff --git a/configure b/configure
index 35a8fe7..79c1c7b 100755
--- a/configure
+++ b/configure
@@ -7063,6 +7063,7 @@ if [ "$CFG_QWS_DEPTHS" = "prompted" -a "$PROMPT_FOR_DEPTHS" = "yes" ]; then
echo "Choose pixel-depths to support:"
echo
echo " 1. 1bpp, black/white"
+ echo " 2. 2bpp, grayscale"
echo " 4. 4bpp, grayscale"
echo " 8. 8bpp, paletted"
echo " 12. 12bpp, rgb 4-4-4"
@@ -7081,11 +7082,11 @@ if [ "$CFG_QWS_DEPTHS" = "prompted" -a "$PROMPT_FOR_DEPTHS" = "yes" ]; then
fi
if [ -n "$CFG_QWS_DEPTHS" -a "$PLATFORM_QWS" = "yes" ]; then
if [ "$CFG_QWS_DEPTHS" = "all" ]; then
- CFG_QWS_DEPTHS="1 4 8 12 15 16 18 24 32 generic"
+ CFG_QWS_DEPTHS="1 2 4 8 12 15 16 18 24 32 generic"
fi
for D in `echo "$CFG_QWS_DEPTHS" | sed -e 's/,/ /g'`; do
case $D in
- 1|4|8|12|15|16|18|24|32) QCONFIG_FLAGS="$QCONFIG_FLAGS QT_QWS_DEPTH_$D";;
+ 1|2|4|8|12|15|16|18|24|32) QCONFIG_FLAGS="$QCONFIG_FLAGS QT_QWS_DEPTH_$D";;
generic) QCONFIG_FLAGS="$QCONFIG_FLAGS QT_QWS_DEPTH_GENERIC";;
esac
done
diff --git a/src/gui/embedded/qscreen_qws.cpp b/src/gui/embedded/qscreen_qws.cpp
index b307bf2..88950b3 100644
--- a/src/gui/embedded/qscreen_qws.cpp
+++ b/src/gui/embedded/qscreen_qws.cpp
@@ -469,6 +469,58 @@ static void solidFill_gray4(QScreen *screen, const QColor &color,
}
#endif // QT_QWS_DEPTH_4
+#ifdef QT_QWS_DEPTH_2
+static inline void qt_rectfill_gray2(quint8 *dest, quint8 value,
+ int x, int y, int width, int height,
+ int stride)
+{
+ const int pixelsPerByte = 4;
+ const int alignWidth = qMin(width, (4 - (x & 3)) & 3);
+ const int doAlign = (alignWidth > 0 ? 1 : 0);
+ const int alignStart = pixelsPerByte - 1 - (x & 3);
+ const int alignStop = alignStart - (alignWidth - 1);
+ const quint8 alignMask = ((1 << (2 * alignWidth)) - 1) << (2 * alignStop);
+ const int tailWidth = (width - alignWidth) & 3;
+ const int doTail = (tailWidth > 0 ? 1 : 0);
+ const quint8 tailMask = (1 << (2 * (pixelsPerByte - tailWidth))) - 1;
+ const int width8 = (width - alignWidth) / pixelsPerByte;
+
+ dest += y * stride + x / pixelsPerByte;
+ stride -= (doAlign + width8);
+
+ for (int j = 0; j < height; ++j) {
+ if (doAlign) {
+ *dest = (*dest & ~alignMask) | (value & alignMask);
+ ++dest;
+ }
+ if (width8) {
+ qt_memfill<quint8>(dest, value, width8);
+ dest += width8;
+ }
+ if (doTail)
+ *dest = (*dest & tailMask) | (value & ~tailMask);
+ dest += stride;
+ }
+}
+
+static void solidFill_gray2(QScreen *screen, const QColor &color,
+ const QRegion &region)
+{
+ quint8 *dest = reinterpret_cast<quint8*>(screen->base());
+ const quint8 c = qGray(color.rgba()) >> 6;
+ const quint8 c8 = (c << 6) | (c << 4) | (c << 2) | c;
+
+ const int stride = screen->linestep();
+ const QVector<QRect> rects = region.rects();
+
+ for (int i = 0; i < rects.size(); ++i) {
+ const QRect r = rects.at(i);
+ qt_rectfill_gray2(dest, c8, r.x(), r.y(), r.width(), r.height(),
+ stride);
+ }
+}
+#endif // QT_QWS_DEPTH_2
+
#ifdef QT_QWS_DEPTH_1
static inline void qt_rectfill_mono(quint8 *dest, quint8 value,
int x, int y, int width, int height,
@@ -576,6 +628,11 @@ void qt_solidFill_setup(QScreen *screen, const QColor &color,
screen->d_ptr->solidFill = solidFill_gray4;
break;
#endif
+#ifdef QT_QWS_DEPTH_2
+ case 2:
+ screen->d_ptr->solidFill = solidFill_gray2;
+ break;
+#endif
#ifdef QT_QWS_DEPTH_1
case 1:
screen->d_ptr->solidFill = solidFill_mono;
@@ -1006,6 +1063,149 @@ static void blit_4(QScreen *screen, const QImage &image,
}
#endif // QT_QWS_DEPTH_4
+#ifdef QT_QWS_DEPTH_2
+
+struct qgray2 { quint8 dummy; } Q_PACKED;
+
+template <typename SRC>
+static inline quint8 qt_convertToGray2(SRC color);
+
+template <>
+inline quint8 qt_convertToGray2(quint32 color)
+{
+ return qGray(color) >> 6;
+}
+
+template <>
+inline quint8 qt_convertToGray2(quint16 color)
+{
+ const int r = (color & 0xf800) >> 11;
+ const int g = (color & 0x07e0) >> 6; // only keep 5 bit
+ const int b = (color & 0x001f);
+ return (r * 11 + g * 16 + b * 5) >> 8;
+}
+
+template <>
+inline quint8 qt_convertToGray2(qrgb444 color)
+{
+ return qt_convertToGray2(quint32(color));
+}
+
+template <>
+inline quint8 qt_convertToGray2(qargb4444 color)
+{
+ return qt_convertToGray2(quint32(color));
+}
+
+template <typename SRC>
+static inline void qt_rectconvert_gray2(qgray2 *dest2, const SRC *src,
+ int x, int y, int width, int height,
+ int dstStride, int srcStride)
+{
+ const int pixelsPerByte = 4;
+ quint8 *dest8 = reinterpret_cast<quint8*>(dest2)
+ + y * dstStride + x / pixelsPerByte;
+ const int alignWidth = qMin(width, (4 - (x & 3)) & 3);
+ const int doAlign = (alignWidth > 0 ? 1 : 0);
+ const int alignStart = pixelsPerByte - 1 - (x & 3);
+ const int alignStop = alignStart - (alignWidth - 1);
+ const quint8 alignMask = ((1 << (2 * alignWidth)) - 1) << (2 * alignStop);
+ const int tailWidth = (width - alignWidth) & 3;
+ const int doTail = (tailWidth > 0 ? 1 : 0);
+ const quint8 tailMask = (1 << (2 * (pixelsPerByte - tailWidth))) - 1;
+ const int width8 = (width - alignWidth) / pixelsPerByte;
+
+ srcStride = srcStride / sizeof(SRC) - (width8 * pixelsPerByte + alignWidth);
+ dstStride -= (width8 + doAlign);
+
+ for (int j = 0; j < height; ++j) {
+ if (doAlign) {
+ quint8 d = *dest8 & ~alignMask;
+ for (int i = alignStart; i >= alignStop; --i)
+ d |= qt_convertToGray2<SRC>(*src++) << (2 * i);
+ *dest8++ = d;
+ }
+ for (int i = 0; i < width8; ++i) {
+ *dest8 = (qt_convertToGray2<SRC>(src[0]) << 6)
+ | (qt_convertToGray2<SRC>(src[1]) << 4)
+ | (qt_convertToGray2<SRC>(src[2]) << 2)
+ | (qt_convertToGray2<SRC>(src[3]));
+ src += 4;
+ ++dest8;
+ }
+ if (doTail) {
+ quint8 d = *dest8 & tailMask;
+ switch (tailWidth) {
+ case 3: d |= qt_convertToGray2<SRC>(src[2]) << 2;
+ case 2: d |= qt_convertToGray2<SRC>(src[1]) << 4;
+ case 1: d |= qt_convertToGray2<SRC>(src[0]) << 6;
+ }
+ *dest8 = d;
+ }
+
+ dest8 += dstStride;
+ src += srcStride;
+ }
+}
+
+template <>
+void qt_rectconvert(qgray2 *dest, const quint32 *src,
+ int x, int y, int width, int height,
+ int dstStride, int srcStride)
+{
+ qt_rectconvert_gray2<quint32>(dest, src, x, y, width, height,
+ dstStride, srcStride);
+}
+
+template <>
+void qt_rectconvert(qgray2 *dest, const quint16 *src,
+ int x, int y, int width, int height,
+ int dstStride, int srcStride)
+{
+ qt_rectconvert_gray2<quint16>(dest, src, x, y, width, height,
+ dstStride, srcStride);
+}
+
+template <>
+void qt_rectconvert(qgray2 *dest, const qrgb444 *src,
+ int x, int y, int width, int height,
+ int dstStride, int srcStride)
+{
+ qt_rectconvert_gray2<qrgb444>(dest, src, x, y, width, height,
+ dstStride, srcStride);
+}
+
+template <>
+void qt_rectconvert(qgray2 *dest, const qargb4444 *src,
+ int x, int y, int width, int height,
+ int dstStride, int srcStride)
+{
+ qt_rectconvert_gray2<qargb4444>(dest, src, x, y, width, height,
+ dstStride, srcStride);
+}
+
+static void blit_2(QScreen *screen, const QImage &image,
+ const QPoint &topLeft, const QRegion &region)
+{
+ switch (image.format()) {
+ case QImage::Format_ARGB32_Premultiplied:
+ blit_template<qgray2, quint32>(screen, image, topLeft, region);
+ return;
+ case QImage::Format_RGB16:
+ blit_template<qgray2, quint16>(screen, image, topLeft, region);
+ return;
+ case QImage::Format_RGB444:
+ blit_template<qgray2, qrgb444>(screen, image, topLeft, region);
+ return;
+ case QImage::Format_ARGB4444_Premultiplied:
+ blit_template<qgray2, qargb4444>(screen, image, topLeft, region);
+ return;
+ default:
+ qCritical("blit_2(): Image format %d not supported!", image.format());
+ }
+}
+#endif // QT_QWS_DEPTH_2
+
#ifdef QT_QWS_DEPTH_1
struct qmono { quint8 dummy; } Q_PACKED;
@@ -1259,6 +1459,11 @@ void qt_blit_setup(QScreen *screen, const QImage &image,
screen->d_ptr->blit = blit_4;
break;
#endif
+#ifdef QT_QWS_DEPTH_2
+ case 2:
+ screen->d_ptr->blit = blit_2;
+ break;
+#endif
#ifdef QT_QWS_DEPTH_1
case 1:
screen->d_ptr->blit = blit_1;
@@ -2146,6 +2351,8 @@ int QScreen::alloc(unsigned int r,unsigned int g,unsigned int b)
}
} else if (d == 4) {
ret = qGray(r, g, b) >> 4;
+ } else if (d == 2) {
+ ret = qGray(r, g, b) >> 6;
} else if (d == 1) {
ret = qGray(r, g, b) >= 128;
} else {
@@ -2216,6 +2423,10 @@ bool QScreen::supportsDepth(int d) const
} else if(d==1) {
return true;
#endif
+#ifdef QT_QWS_DEPTH_2
+ } else if(d==2) {
+ return true;
+#endif
#ifdef QT_QWS_DEPTH_4
} else if(d==4) {
return true;
diff --git a/src/gui/embedded/qscreenlinuxfb_qws.cpp b/src/gui/embedded/qscreenlinuxfb_qws.cpp
index 6f3caad..14159ee 100644
--- a/src/gui/embedded/qscreenlinuxfb_qws.cpp
+++ b/src/gui/embedded/qscreenlinuxfb_qws.cpp
@@ -466,8 +466,8 @@ bool QLinuxFbScreen::connect(const QString &displaySpec)
setupOffScreen();
// Now read in palette
- if((vinfo.bits_per_pixel==8) || (vinfo.bits_per_pixel==4)) {
- screencols= (vinfo.bits_per_pixel==8) ? 256 : 16;
+ if((vinfo.bits_per_pixel==8) || (vinfo.bits_per_pixel==4) || (vinfo.bits_per_pixel==2)) {
+ screencols= 1 << vinfo.bits_per_pixel;
int loopc;
::fb_cmap startcmap;
startcmap.start=0;
--
1.8.0