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      1 /*
      2  * Copyright 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include <WindowSurface.h>
     18 
     19 #include <gui/SurfaceComposerClient.h>
     20 #include <gui/ISurfaceComposer.h>
     21 #include <gui/Surface.h>
     22 #include <ui/DisplayInfo.h>
     23 
     24 using namespace android;
     25 
     26 WindowSurface::WindowSurface() {
     27     status_t err;
     28 
     29     sp<SurfaceComposerClient> surfaceComposerClient = new SurfaceComposerClient;
     30     err = surfaceComposerClient->initCheck();
     31     if (err != NO_ERROR) {
     32         fprintf(stderr, "SurfaceComposerClient::initCheck error: %#x\n", err);
     33         return;
     34     }
     35 
     36     // Get main display parameters.
     37     sp<IBinder> mainDpy = SurfaceComposerClient::getBuiltInDisplay(
     38             ISurfaceComposer::eDisplayIdMain);
     39     DisplayInfo mainDpyInfo;
     40     err = SurfaceComposerClient::getDisplayInfo(mainDpy, &mainDpyInfo);
     41     if (err != NO_ERROR) {
     42         fprintf(stderr, "ERROR: unable to get display characteristics\n");
     43         return;
     44     }
     45 
     46     uint32_t width, height;
     47     if (mainDpyInfo.orientation != DISPLAY_ORIENTATION_0 &&
     48             mainDpyInfo.orientation != DISPLAY_ORIENTATION_180) {
     49         // rotated
     50         width = mainDpyInfo.h;
     51         height = mainDpyInfo.w;
     52     } else {
     53         width = mainDpyInfo.w;
     54         height = mainDpyInfo.h;
     55     }
     56 
     57     sp<SurfaceControl> sc = surfaceComposerClient->createSurface(
     58             String8("Benchmark"), width, height,
     59             PIXEL_FORMAT_RGBX_8888, ISurfaceComposerClient::eOpaque);
     60     if (sc == NULL || !sc->isValid()) {
     61         fprintf(stderr, "Failed to create SurfaceControl\n");
     62         return;
     63     }
     64 
     65     SurfaceComposerClient::openGlobalTransaction();
     66     err = sc->setLayer(0x7FFFFFFF);     // always on top
     67     if (err != NO_ERROR) {
     68         fprintf(stderr, "SurfaceComposer::setLayer error: %#x\n", err);
     69         return;
     70     }
     71 
     72     err = sc->show();
     73     if (err != NO_ERROR) {
     74         fprintf(stderr, "SurfaceComposer::show error: %#x\n", err);
     75         return;
     76     }
     77     SurfaceComposerClient::closeGlobalTransaction();
     78 
     79     mSurfaceControl = sc;
     80 }
     81 
     82 EGLNativeWindowType WindowSurface::getSurface() const {
     83     sp<ANativeWindow> anw = mSurfaceControl->getSurface();
     84     return (EGLNativeWindowType) anw.get();
     85 }
     86 
     87