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标题: 修改横屏显示 [打印本页]

作者: zangcf 时间: 2016-5-3 22:51
标题: 修改横屏显示
最终方法：修改文件frameworks/native/services/surfaceflinger/DisplayDevice.cpp
DisplayDevice:

isplayDevice(
      const sp<SurfaceFlinger>& flinger,
      DisplayType type,
      int32_t hwcId,
      int format,
      bool isSecure,
      const wp<IBinder>& displayToken,
      const sp<DisplaySurface>& displaySurface,
      const sp<IGraphicBufferProducer>& producer,
      EGLConfig config)
: lastCompositionHadVisibleLayers(false),
   mFlinger(flinger),
   mType(type), mHwcDisplayId(hwcId),
   mDisplayToken(displayToken),
   mDisplaySurface(displaySurface),
   mDisplay(EGL_NO_DISPLAY),
   mSurface(EGL_NO_SURFACE),
   mDisplayWidth(), mDisplayHeight(), mFormat(),
   mFlags(),
   mPageFlipCount(),
   mIsSecure(isSecure),
   mSecureLayerVisible(false),
   mLayerStack(NO_LAYER_STACK),
   mOrientation(),
   mPowerMode(HWC_POWER_MODE_OFF),
   mActiveConfig(0)
{
mNativeWindow = new Surface(producer, false);
ANativeWindow* const window = mNativeWindow.get();

/*
   * Create our display's surface
   */

EGLSurface surface;
EGLint w, h;
EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
if (config == EGL_NO_CONFIG) {
      config = RenderEngine::chooseEglConfig(display, format);
}
surface = eglCreateWindowSurface(display, config, window, NULL);
eglQuerySurface(display, surface, EGL_WIDTH,  &mDisplayWidth);
eglQuerySurface(display, surface, EGL_HEIGHT, &mDisplayHeight);

// Make sure that composition can never be stalled by a virtual display
// consumer that isn't processing buffers fast enough. We have to do this
// in two places:
// * Here, in case the display is composed entirely by HWC.
// * In makeCurrent(), using eglSwapInterval. Some EGL drivers set the
// window's swap interval in eglMakeCurrent, so they'll override the
// interval we set here.
if (mType >= DisplayDevice:

ISPLAY_VIRTUAL)
window->setSwapInterval(window, 0);

mConfig = config;
mDisplay = display;
mSurface = surface;
mFormat = format;
mPageFlipCount = 0;
mViewport.makeInvalid();
mFrame.makeInvalid();

// virtual displays are always considered enabled
mPowerMode = (mType >= DisplayDevice:

ISPLAY_VIRTUAL) ?
               HWC_POWER_MODE_NORMAL : HWC_POWER_MODE_OFF;
#ifdef MTK_AOSP_ENHANCEMENT
mHwOrientation = DisplayState::eOrientation90;
mHwcMirrorId = -1;
#endif

// Name the display.  The name will be replaced shortly if the display
// was created with createDisplay().
switch (mType) {
      case DISPLAY_PRIMARY:
         mDisplayName = "Built-in Screen";
#ifdef MTK_AOSP_ENHANCEMENT
         switch (mFlinger->sPropertiesState.mHwRotation) {
            case 90:
                  mHwOrientation = DisplayState::eOrientation90;
                  break;
            case 180:
                  mHwOrientation = DisplayState::eOrientation180;
                  break;
            case 270:
                  mHwOrientation = DisplayState::eOrientation270;
                  break;
         }
#endif
         break;
      case DISPLAY_EXTERNAL:
         mDisplayName = "HDMI Screen";
         break;
      default:
         mDisplayName = "Virtual Screen"; // e.g. Overlay #n
         break;
}

// initialize the display orientation transform.
setProjection(DisplayState::eOrientation90, mViewport, mFrame);
}
好了

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