qt5base-lts/mkspecs/unsupported/android-g++/qeglfshooks_surfaceflinger.cpp
Arvid Picciani 0aa28cf67a android-eglfs: open the correct fb device for reading attrs
Change-Id: Icedcab50379834fa3456d0e18aaef8a4dd9cf949
Reviewed-by: Samuel Rødal <samuel.rodal@digia.com>
2012-10-13 23:23:33 +02:00

154 lines
4.9 KiB
C++

/****************************************************************************
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#include "qeglfshooks.h"
#include <ui/DisplayInfo.h>
#include <ui/FramebufferNativeWindow.h>
#include <gui/SurfaceComposerClient.h>
#include <fcntl.h>
#include <unistd.h>
#include <linux/fb.h>
#include <sys/ioctl.h>
using namespace android;
QT_BEGIN_NAMESPACE
class QEglFSPandaHooks : public QEglFSHooks
{
public:
virtual EGLNativeWindowType createNativeWindow(const QSize &size, const QSurfaceFormat &format);
virtual QSize screenSize() const;
virtual int screenDepth() const;
private:
// androidy things
sp<android::SurfaceComposerClient> mSession;
sp<android::SurfaceControl> mControl;
sp<android::Surface> mAndroidSurface;
};
EGLNativeWindowType QEglFSPandaHooks::createNativeWindow(const QSize &size, const QSurfaceFormat &)
{
Q_UNUSED(size);
mSession = new SurfaceComposerClient();
DisplayInfo dinfo;
int status=0;
status = mSession->getDisplayInfo(0, &dinfo);
mControl = mSession->createSurface(
0, dinfo.w, dinfo.h, PIXEL_FORMAT_RGB_888);
SurfaceComposerClient::openGlobalTransaction();
mControl->setLayer(0x40000000);
// mControl->setAlpha(1);
SurfaceComposerClient::closeGlobalTransaction();
mAndroidSurface = mControl->getSurface();
EGLNativeWindowType eglWindow = mAndroidSurface.get();
return eglWindow;
}
QSize QEglFSPandaHooks::screenSize() const
{
static QSize size;
if (size.isEmpty()) {
int width = qgetenv("QT_QPA_EGLFS_WIDTH").toInt();
int height = qgetenv("QT_QPA_EGLFS_HEIGHT").toInt();
if (width && height) {
// no need to read fb0
size.setWidth(width);
size.setHeight(height);
return size;
}
struct fb_var_screeninfo vinfo;
int fd = open("/dev/graphics/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);
close(fd);
} else {
qWarning("Failed to open /dev/graphics/fb0 to detect screen resolution.");
}
// override fb0 from environment var setting
if (width)
size.setWidth(width);
if (height)
size.setHeight(height);
}
return size;
}
int QEglFSPandaHooks::screenDepth() const
{
static int depth = qgetenv("QT_QPA_EGLFS_DEPTH").toInt();
if (depth == 0) {
struct fb_var_screeninfo vinfo;
int fd = open("/dev/graphics/fb0", O_RDONLY);
if (fd != -1) {
if (ioctl(fd, FBIOGET_VSCREENINFO, &vinfo) == -1)
qWarning("Could not query variable screen info.");
else
depth = vinfo.bits_per_pixel;
close(fd);
} else {
qWarning("Failed to open /dev/graphics/fb0 to detect screen depth.");
}
}
return depth == 0 ? 32 : depth;
}
static QEglFSPandaHooks eglFSPandaHooks;
QEglFSHooks *platformHooks = &eglFSPandaHooks;
QT_END_NAMESPACE