please help him ---------- Forwarded message ---------- From: Pankaj <dubepankaj1...@gmail.com> Date: 2009/9/16 Subject: [android-porting] How to add multiple frame buffer support in Android? To: android-porting <android-port...@googlegroups.com>
Hi all, We are looking for one serious change in the Android's SurfaceFlinger, as of now Android supports only one display thorugh framebuffer 0 (/ dev/graphics/fb0), but we want to add support for multiple frame buffer (fb0/fb1/fb2). After looking into the surfaceflinger and related module we came to know that we need to change the surfaceflinger, following are some of the changes we have found to be done (although I am not quite sure about these) 1: From SurfaceFlinger::readyToRun() we have to create secondary displays and initialize them. 2: Make size of mGraphicsPlane (array of GraphicsPlane) as 2 (or n=no of display) 3: From DisplayHardware::init while creating the EGLDisplayHardware pass the dpy value and open the corresponding fb (0 or 1) depending on dpy value. But what I am not getting is that does we need to change the initialization of EGLDisplay depending on this dpy values. Basically what changes related with egl we need to do if we want to initialize multiple displays. In surfaceFlinger.cpp in many of the APIs (such as threadLoop, handlePageFlip), the reference of HardwareDisplay is obtained from graphicsPlane(0), so what if we have mulitple graphics plane? If any body have worked or have any idea about this please share ... or correct me if I am wrong somewhere.. Thanks Pankaj -- அன்புடன் அருண் ------------------------------ http://ubuntu-tam.org http://lists.ubuntu.com/ubuntu-l10n-tam http://lists.ubuntu.com/ubuntu-tam ------------------------------ --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
