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标题: now copy half [打印本页]

作者: zangcf 时间: 2016-4-20 01:34
标题: now copy half
void SurfaceFlinger::postFramebuffer()
{
ATRACE_CALL();

const nsecs_t now = systemTime();
mDebugInSwapBuffers = now;

HWComposer& hwc(getHwComposer());
if (hwc.initCheck() == NO_ERROR) {
      if (!hwc.supportsFramebufferTarget()) {
         // EGL spec says:
         // "surface must be bound to the calling thread's current context,
         // for the current rendering API."
         getDefaultDisplayDevice()->makeCurrent(mEGLDisplay, mEGLContext);
      }
      hwc.commit();
}

// make the default display current because the VirtualDisplayDevice code cannot
// deal with dequeueBuffer() being called outside of the composition loop; however
// the code below can call glFlush() which is allowed (and does in some case) call
// dequeueBuffer().
getDefaultDisplayDevice()->makeCurrent(mEGLDisplay, mEGLContext);

for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
      sp<const DisplayDevice> hw(mDisplays[dpy]);
#ifdef MTK_AOSP_ENHANCEMENT
      if (!hw->mustRecompose()) continue;
#endif
      const Vector< sp<Layer> >& currentLayers(hw->getVisibleLayersSortedByZ());
      hw->onSwapBuffersCompleted(hwc);
      const size_t count = currentLayers.size();
      int32_t id = hw->getHwcDisplayId();
      sp<GraphicBuffer> buf; //zcfdebug++
      if (id >=0 && hwc.initCheck() == NO_ERROR) {
         HWComposer:

ayerListIterator cur = hwc.begin(id);
const HWComposer:

ayerListIterator end = hwc.end(id);
         for (size_t i = 0; cur != end && i < count; ++i, ++cur) {
//zcfdebug++<<
            buf = currentLayers[i]->getActiveBuffer();
            ALOGE("zcfdebug here in SurfaceFlinger::postFramebuffer()");
            ALOGE("zcfdebug buf->stride is %d", buf->stride);
            ALOGE("zcfdebug buf->height is %d", buf->height);
            if(buf!=NULL){
                  uint8_t* img = NULL;

                  buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN | GRALLOC_USAGE_HW_TEXTURE, (void**)(&img));
                  //memcpy(img+buf->stride * buf->height*2,img,buf->stride * buf->height*2);
                  //memset(img,0,buf->stride * buf->height*4);
                  memcpy(img+buf->stride * buf->height*2,img,buf->stride * buf->height*2);
                  buf->unlock();
            }
//zcfdebug++>>
            currentLayers[i]->onLayerDisplayed(hw, &*cur);
         }
      } else {
         for (size_t i = 0; i < count; i++) {
//zcfdebug++<<
            buf = currentLayers[i]->getActiveBuffer();
            ALOGE("zcfdebug here in SurfaceFlinger::postFramebuffer()");
            ALOGE("zcfdebug buf->stride is %d", buf->stride);
            ALOGE("zcfdebug buf->height is %d", buf->height);
            if(buf!=NULL){
                  uint8_t* img = NULL;

                  buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN | GRALLOC_USAGE_HW_TEXTURE, (void**)(&img));
                  //memcpy(img+buf->stride * buf->height*2,img,buf->stride * buf->height*2);
                  //memset(img,0,buf->stride * buf->height*4);
                  memcpy(img+buf->stride * buf->height*2,img,buf->stride * buf->height*2);
                  buf->unlock();
            }
//zcfdebug++>>
            currentLayers[i]->onLayerDisplayed(hw, NULL);
         }
      }
}

mLastSwapBufferTime = systemTime() - now;
mDebugInSwapBuffers = 0;

uint32_t flipCount = getDefaultDisplayDevice()->getPageFlipCount();
if (flipCount % LOG_FRAME_STATS_PERIOD == 0) {
      logFrameStats();
}
}

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