surfaceflinger android

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Analysis of surfaceflinger Service Startup Process of surface mechanism in Android system

In the previous article, we briefly introduced the surfaceflinger service in the surface mechanism of the Android system. The surfaceflinger service is started in the system process and is responsible for unified management of the device's frame buffer. When the surfaceflinger service is started, two threads are create

Overview of the relationship between Android applications and surfaceflinger services and learning plans

The surfaceflinger Service is responsible for drawing the UI of the Android Application. Its implementation is quite complex. It is not easy to analyze its implementation from the front. Since we cannot analyze the data from the front, we can try to analyze the data from the side. In the end, no matter how complicated the surfaceflinger service is, it serves

Overview of the relationship between Android applications and surfaceflinger services and learning plans.

The surfaceflinger Service is responsible for drawing the UI of the Android Application. Its implementation is quite complex. It is not easy to analyze its implementation from the front. Since we cannot analyze the data from the front, we can try to analyze the data from the side. In the end, no matter how complicated the surfaceflinger service is, it serves

Overview of the relationship between Android apps and Surfaceflinger services and learning Plans

Article reprinted to CSDN community Luo Shenyang's Android tour, original address: http://blog.csdn.net/luoshengyang/article/details/7846923 surfaceflinger service is responsible for drawing the Span style= "color:black;" >android application ui It's very complex to implement, It is not an easy task to analyze its implementation from the front. Since we cannot an

Analysis on the creation process of shared UI metadata (SharedClient) between Android applications and SurfaceFlinger services

In the previous article, we analyzed the connection process between Android applications and SurfaceFlinger services. After the Android Application successfully connects to the SurfaceFlinger service, an anonymous shared memory is required to share its UI metadata with the SurfaceF

Analysis of the connection process between Android application and Surfaceflinger service

Transferred from: http://blog.csdn.net/luoshengyang/article/details/7857163In describing the relationship between Android applications and Surfaceflinger Services, it is mentioned that every android application with a UI needs to The Surfaceflinger service establishes a connection so that the

Analysis of connection process between Android applications and surfaceflinger services

When describing the relationship between Android applications and the surfaceflinger service, we mentioned that every android application with a UI needs to establish a connection with the surfaceflinger service, this connection allows you to request the surfaceflinger servi

Display buffer management between the sharedclient-client (surface) and server (layer) in Android surfaceflinger

Surfaceflinger is loaded as a system service in the system startup phase. Each window in the application corresponds to the surface in the local code, and the surface corresponds to each layer in surfaceflinger. The main function of surfaceflinger is to apply for memory for these layers, manage the layer display, hide, and re-draw operations based on application

Android core analysis (26) -- surfaceflinger of Android GDI

Surfaceflinger of Android GDI Surfacefinger is translated as a surface shipper by English. The structure of sufaceflinger is not too complex, but the complexity of sufaceflinger is its client construction. The main functions of sufaceflinger are: 1) refresh the content of layers (surfaces) to the screen. 2) maintain the zorder sequence of the layer and perform the cropping calculation on the final output of

SurfaceFlinger (3) of android Gui system and androidgui System

SurfaceFlinger (3) of android Gui system and androidgui System7. SurfaceFlinger SurfaceFlinger has been mentioned in the previous section and is involved in many cases. SurfaceFlinger is the core of GUI refreshing UI, so any improvements to

Sharedclient in Android surfaceflinger

Document directory 1. sharedclient 2. sharedbufferstack, sharedbufferserver, and sharedbufferclient Http://blog.csdn.net/DroidPhone/article/details/5972568 Surfaceflinger is loaded as a system service in the system startup phase. Each window in the application corresponds to the surface in the local code, and the surface corresponds to each layer in surfaceflinger. The main function of

Understanding the creation of SurfaceFlinger client from Android Bootanimation

This article is a summary of the source code. Please specify the source for the transfer. Thank you. Welcome to your discussion. Qq: 1037701636 email: gzzaigcn2012@gmail.com Android source code Version: 4.2.2; hardware platform A31 Step1. the previous blogs are recording the SurfaceFLinger side, that is, the so-called Server side. Next, let's take a look at how the client will transfer the image informat

Layer, layerdim, layerblur, and layerbuffer in Android surfaceflinger

Different types of surface in applications correspond to different layer classes in the surfaceflinger of the local layer of frameworks. This article mainly discusses the implementation and differences of these layers. Before reading this article, you 'd better understand surfaceflinger, a system service. For more information, see my following two articles: Sharedclient in

Android Surfaceflinger Service (eight) output of-----image

. status_t Hwcomposer::commit () {int err = No_error; if (MHWC) {if (!hwchasapiversion (MHWC, hwc_device_api_version_1_1)) {//On VERSION 1.0, the Ope NGL ES Target surface is communicated//by the (Dpy, Sur) fields and we were guaranteed to has only A single display. Mlists[0]->dpy = Eglgetcurrentdisplay (); Mlists[0]->sur = Eglgetcurrentsurface (Egl_draw); } for (size_t i=virtual_display_id_base; i Call Mhwc->set to compose and output

Android GUI system Surfaceflinger (9) Project Butter Butter Program

1.1 Surfaceflinger Starting from this section, we formally cut into Surfaceflinger's analysis. In order to maintain the continuity of the presentation, some of the content may have been covered in the previous chapters, and the details will be expanded to include further explanations. The content is organized as follows: L First introduce the new features introduced by Android 4.1 (Project Butter), it is

Android GUI system Surfaceflinger (1) opengles and EGL

1th Chapter The Surfaceflinger of GUI system Before entering the GUI system, we recommend that you read the "Opengles" section in the application of this book and see the official OpenGL ES Guide. Because the Android GUI system is based on OPENGL/EGL to achieve, if there is no basis for the analysis of the source code may be "less effort." 1.1 Opengles and EGL Surfac

Android GUI system Surfaceflinger (one) surfacecomposerclient

1.1.1 Surfacecomposerclient Figure 11?28 Each application corresponds to a client in the Surfaceflinger Surfaceflinger runs in the systemserver system process, applications that require a UI interface to communicate across processes through the binder service. In the study of audio system, each audiotrack can find a corresponding track implementation in Audioflinger. This design approach also applies to

The generation and processing of Surfaceflinger (a) VSync signal in the Android GUI system

Generation and treatment of 1.1 VSync In the previous section Projectbutter we learned about the new features in the Android 4.1 display system, one of which is to join the VSync synchronization. From the theoretical point of view, we analyze the necessity and operation mechanism of adopting this mechanism, then how to implement the Surfaceflinger concretely? Let's think about what you should consider: ·

Android 4.4 Fence application in SurfaceFlinger, androidflinger

Android 4.4 Fence application in SurfaceFlinger, androidflinger There is very little information about android and fence on the Internet, but this mechanism plays an important role in the GUI system, so I read the source code and comments myself, I 'd like to share with you what Fence is like? Fence is a barrier. The role of a barrier is very similar to its name.

Android Surfaceflinger Service (vi) Distribution of-----vsync signals

(!mVsyncEnabled) { mVsyncEnabled = true; mVSyncSource->setCallback(static_cast Eventthread inherits the Vsyncsource::callback interface, implements the Onvsyncevent function Call Mvsyncsource's Setcallback function to set the callback Call Mvsyncsource's setvsyncenabled function to enable the monitoring of the vsync signal. void EventThread::onVSyncEvent(nsecs_t timestamp) { Mutex::Autolock _l(mLock); mVSyncEvent[0].header.type = Displ

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