From 8744273fc452eb54bbeeb7d15823009ce926c6fa Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Jeremy=20Lain=C3=A9?= 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 --- 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(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 ®ion) +{ + quint8 *dest = reinterpret_cast(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 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 +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 +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(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++) << (2 * i); + *dest8++ = d; + } + for (int i = 0; i < width8; ++i) { + *dest8 = (qt_convertToGray2(src[0]) << 6) + | (qt_convertToGray2(src[1]) << 4) + | (qt_convertToGray2(src[2]) << 2) + | (qt_convertToGray2(src[3])); + src += 4; + ++dest8; + } + if (doTail) { + quint8 d = *dest8 & tailMask; + switch (tailWidth) { + case 3: d |= qt_convertToGray2(src[2]) << 2; + case 2: d |= qt_convertToGray2(src[1]) << 4; + case 1: d |= qt_convertToGray2(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(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(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(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(dest, src, x, y, width, height, + dstStride, srcStride); +} + +static void blit_2(QScreen *screen, const QImage &image, + const QPoint &topLeft, const QRegion ®ion) +{ + switch (image.format()) { + case QImage::Format_ARGB32_Premultiplied: + blit_template(screen, image, topLeft, region); + return; + case QImage::Format_RGB16: + blit_template(screen, image, topLeft, region); + return; + case QImage::Format_RGB444: + blit_template(screen, image, topLeft, region); + return; + case QImage::Format_ARGB4444_Premultiplied: + blit_template(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