1 = 90 degree rotation 2 = 180 degree rotation 3 = 270 degree rotation If CONFIG_LCD_ROTATION is not defined, the console will be initialized with 0degree rotation. CONFIG_LCD_BMP_RLE8 Support drawing of RLE8-c
虚拟设备的代码为hw/android/goldfish/fb.c goldfish_fb_init初始化,s->ds = graphic_console_init返回的格式是32bit的,和驱动中固定支持的565不同,不过驱动压根就没有用GET_FORMAT去看虚拟设备支持的格式,所以就不管它了。另外,dpi被写死了s->dpi = 165 void goldfish_fb_init(int id) { struct goldfish_...
* can use the offset as right argument to <<). A pixel afterwards is a bit * stream and is written to video memory as that unmodified. * * 色域偏移的解释:所有的偏移量都来自于右边,在一个"像素"值里面,实际上是'bits_per_pixel' * 的宽度(也就是说:你可以使用该偏移量作为 << 的右参数...
如果这个线程能够通过初始化检查,即DisplayEventThread类的成员函数initCheck的返回值等于NO_ERROR,那么SurfaceFlinger服务就会使用这个类型为DisplayEventThread的线程来监控显示屏的睡眠/唤醒状态切换事件,否则的话,函数接下来就会创建另外一个类型为ConsoleManagerThread的线程来监控显示屏的睡眠/唤醒状态切换事件。 DisplayEvent...
* layer from the console layer. It also allows one to use fbdev on its own * which is a bounus for embedded devices. The reason this approach works is * for each framebuffer device when used as a tty/console device is allocated
*also allows the abilitytorun fbdev without a console/tty systemontop *of it. * *First the roles of struct fb_infoandstruct display have changed.Struct *display will go away.The way the new framebuffer console code will *workisthat it will acttotranslate data about the tty/consolein ...
__u32 console; __u32 framebuffer; };/* VESA Blanking Levels */#defineVESA_NO_BLANKING 0#defineVESA_VSYNC_SUSPEND 1#defineVESA_HSYNC_SUSPEND 2#defineVESA_POWERDOWN 3enum{/* screen: unblanked, hsync: on, vsync: on */FB_BLANK_UNBLANK = VESA_NO_BLANKING,/* screen: blanked, hsync:...
DisplayHardwareBase类的成员变量mDisplayEventThread所描述的线程的类型要么是DisplayEventThread,要么是ConsoleManagerThread,这两者均是从DisplayEventThreadBase类继续下来的,而后者又是从Thread类继承下来的。当硬件帧缓冲区的控制台被打开时,DisplayHardwareBase类的成员 54、变量mDisplayEventThread所描述的线程的类型就是...
The IMHO most elegant way is to use pam_console (see /etc/security/console.perms) to chown the devices to the user logged in on the console. Another way is to create some group, chown the special files to that group and put the users which are allowed to use the framebuffer device ...