diff options
Diffstat (limited to 'src/plugins/platforms/eglfs/qeglfshooks_stub.cpp')
| -rw-r--r-- | src/plugins/platforms/eglfs/qeglfshooks_stub.cpp | 134 |
1 files changed, 116 insertions, 18 deletions
diff --git a/src/plugins/platforms/eglfs/qeglfshooks_stub.cpp b/src/plugins/platforms/eglfs/qeglfshooks_stub.cpp index e9a22ea605..8200fa70b2 100644 --- a/src/plugins/platforms/eglfs/qeglfshooks_stub.cpp +++ b/src/plugins/platforms/eglfs/qeglfshooks_stub.cpp @@ -46,15 +46,32 @@ #include <linux/fb.h> #include <sys/ioctl.h> +#include <private/qmath_p.h> +#include <private/qcore_unix_p.h> + QT_BEGIN_NAMESPACE +// file descriptor for the frame buffer +// this is a global static to keep the QEglFSHooks interface as clean as possible +static int framebuffer = -1; + +const char *QEglFSHooks::fbDeviceName() const +{ + return "/dev/fb0"; +} + void QEglFSHooks::platformInit() { - Q_UNUSED(hooks); + framebuffer = qt_safe_open(fbDeviceName(), O_RDONLY); + + if (framebuffer == -1) + qWarning("EGLFS: Failed to open %s", fbDeviceName()); } void QEglFSHooks::platformDestroy() { + if (framebuffer != -1) + close(framebuffer); } EGLNativeDisplayType QEglFSHooks::platformDisplay() const @@ -62,6 +79,55 @@ EGLNativeDisplayType QEglFSHooks::platformDisplay() const return EGL_DEFAULT_DISPLAY; } +QSizeF QEglFSHooks::physicalScreenSize() const +{ + static QSizeF size; + if (size.isEmpty()) { + + // Note: in millimeters + int width = qgetenv("QT_QPA_EGLFS_PHYSICAL_WIDTH").toInt(); + int height = qgetenv("QT_QPA_EGLFS_PHYSICAL_HEIGHT").toInt(); + + if (width && height) { + // no need to read fb0 + size.setWidth(width); + size.setHeight(height); + return size; + } + + struct fb_var_screeninfo vinfo; + int w = -1; + int h = -1; + + if (framebuffer != -1) { + if (ioctl(framebuffer, FBIOGET_VSCREENINFO, &vinfo) == -1) { + qWarning("EGLFS: Could not query variable screen info."); + } else { + w = vinfo.width; + h = vinfo.height; + } + } + + const int defaultPhysicalDpi = 100; + size.setWidth(w <= 0 ? vinfo.xres * Q_MM_PER_INCH / defaultPhysicalDpi : qreal(w)); + size.setHeight(h <= 0 ? vinfo.yres * Q_MM_PER_INCH / defaultPhysicalDpi : qreal(h)); + + if (w <= 0 || h <= 0) { + qWarning("EGLFS: Unable to query physical screen size, defaulting to %d dpi.\n" + "EGLFS: To override, set QT_QPA_EGLFS_PHYSICAL_WIDTH " + "and QT_QPA_EGLFS_PHYSICAL_HEIGHT (in millimeters).", + defaultPhysicalDpi); + } + + // override fb0 from environment var setting + if (width) + size.setWidth(width); + if (height) + size.setWidth(height); + } + return size; +} + QSize QEglFSHooks::screenSize() const { static QSize size; @@ -78,17 +144,28 @@ QSize QEglFSHooks::screenSize() const } struct fb_var_screeninfo vinfo; - int fd = open("/dev/fb0", O_RDONLY); - if (fd != -1) { - if (ioctl(fd, FBIOGET_VSCREENINFO, &vinfo) == -1) - qWarning("Could not query variable screen info."); - else - size = QSize(vinfo.xres, vinfo.yres); + int xres = -1; + int yres = -1; + + if (framebuffer != -1) { + if (ioctl(framebuffer, FBIOGET_VSCREENINFO, &vinfo) == -1) { + qWarning("EGLFS: Could not query variable screen info."); + } else { + xres = vinfo.xres; + yres = vinfo.yres; + } + } + + const int defaultWidth = 800; + const int defaultHeight = 600; + size.setWidth(xres <= 0 ? defaultWidth : xres); + size.setHeight(yres <= 0 ? defaultHeight : yres); - close(fd); - } else { - qWarning("Failed to open /dev/fb0 to detect screen resolution."); + if (xres <= 0 || yres <= 0) { + qWarning("EGLFS: Unable to query screen resolution, defaulting to %dx%d.\n" + "EGLFS: To override, set QT_QPA_EGLFS_WIDTH and QT_QPA_EGLFS_HEIGHT.", + defaultWidth, defaultHeight); } // override fb0 from environment var setting @@ -107,21 +184,25 @@ int QEglFSHooks::screenDepth() const if (depth == 0) { struct fb_var_screeninfo vinfo; - int fd = open("/dev/fb0", O_RDONLY); - if (fd != -1) { - if (ioctl(fd, FBIOGET_VSCREENINFO, &vinfo) == -1) - qWarning("Could not query variable screen info."); + if (framebuffer != -1) { + if (ioctl(framebuffer, FBIOGET_VSCREENINFO, &vinfo) == -1) + qWarning("EGLFS: Could not query variable screen info."); else depth = vinfo.bits_per_pixel; + } + + const int defaultDepth = 32; + + if (depth <= 0) { + depth = defaultDepth; - close(fd); - } else { - qWarning("Failed to open /dev/fb0 to detect screen depth."); + qWarning("EGLFS: Unable to query screen depth, defaulting to %d.\n" + "EGLFS: To override, set QT_QPA_EGLFS_DEPTH.", defaultDepth); } } - return depth == 0 ? 32 : depth; + return depth; } QImage::Format QEglFSHooks::screenFormat() const @@ -134,6 +215,11 @@ QSurfaceFormat QEglFSHooks::surfaceFormatFor(const QSurfaceFormat &inputFormat) return inputFormat; } +bool QEglFSHooks::filterConfig(EGLDisplay, EGLConfig) const +{ + return true; +} + EGLNativeWindowType QEglFSHooks::createNativeWindow(const QSize &size, const QSurfaceFormat &format) { Q_UNUSED(size); @@ -158,6 +244,18 @@ QEglFSCursor *QEglFSHooks::createCursor(QEglFSScreen *screen) const return 0; } +void QEglFSHooks::waitForVSync() const +{ +#if defined(FBIO_WAITFORVSYNC) + static const bool forceSync = qgetenv("QT_QPA_EGLFS_FORCEVSYNC").toInt(); + if (forceSync && framebuffer != -1) { + int arg = 0; + if (ioctl(framebuffer, FBIO_WAITFORVSYNC, &arg) == -1) + qWarning("Could not wait for vsync."); + } +#endif +} + #ifndef EGLFS_PLATFORM_HOOKS QEglFSHooks stubHooks; #endif |