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      1 /*
      2 * Copyright (c) 2013-14 The Linux Foundation. All rights reserved.
      3 *
      4 * Redistribution and use in source and binary forms, with or without
      5 * modification, are permitted provided that the following conditions are
      6 * met:
      7 *    * Redistributions of source code must retain the above copyright
      8 *      notice, this list of conditions and the following disclaimer.
      9 *    * Redistributions in binary form must reproduce the above
     10 *      copyright notice, this list of conditions and the following
     11 *      disclaimer in the documentation and/or other materials provided
     12 *      with the distribution.
     13 *    * Neither the name of The Linux Foundation. nor the names of its
     14 *      contributors may be used to endorse or promote products derived
     15 *      from this software without specific prior written permission.
     16 *
     17 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
     18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
     20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
     21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
     24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
     26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
     27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28 */
     29 
     30 #ifndef QSERVICEUTILS_H
     31 #define QSERVICEUTILS_H
     32 #include <binder/Parcel.h>
     33 #include <binder/IServiceManager.h>
     34 #include <utils/RefBase.h>
     35 #include <IQService.h>
     36 
     37 // ----------------------------------------------------------------------------
     38 // Helpers
     39 // ----------------------------------------------------------------------------
     40 inline android::sp<qService::IQService> getBinder() {
     41     android::sp<android::IServiceManager> sm = android::defaultServiceManager();
     42     android::sp<qService::IQService> binder =
     43             android::interface_cast<qService::IQService>
     44             (sm->getService(android::String16("display.qservice")));
     45     if (binder == NULL) {
     46         ALOGE("%s: invalid binder object", __FUNCTION__);
     47     }
     48     return binder;
     49 }
     50 
     51 inline android::status_t sendSingleParam(uint32_t command, uint32_t value) {
     52     android::status_t err = (android::status_t) android::FAILED_TRANSACTION;
     53     android::sp<qService::IQService> binder = getBinder();
     54     android::Parcel inParcel, outParcel;
     55     inParcel.writeInt32(value);
     56     if(binder != NULL) {
     57         err = binder->dispatch(command, &inParcel , &outParcel);
     58     }
     59     return err;
     60 }
     61 
     62 // ----------------------------------------------------------------------------
     63 // Convenience wrappers that clients can call
     64 // ----------------------------------------------------------------------------
     65 inline android::status_t screenRefresh() {
     66     return sendSingleParam(qService::IQService::SCREEN_REFRESH, 1);
     67 }
     68 
     69 inline android::status_t toggleScreenUpdate(uint32_t on) {
     70     return sendSingleParam(qService::IQService::TOGGLE_SCREEN_UPDATES, on);
     71 }
     72 
     73 inline android::status_t setExtOrientation(uint32_t orientation) {
     74     return sendSingleParam(qService::IQService::EXTERNAL_ORIENTATION,
     75             orientation);
     76 }
     77 
     78 inline android::status_t setBufferMirrorMode(uint32_t enable) {
     79     return sendSingleParam(qService::IQService::BUFFER_MIRRORMODE, enable);
     80 }
     81 
     82 inline android::status_t setCameraLaunchStatus(uint32_t on) {
     83     return sendSingleParam(qService::IQService::SET_CAMERA_STATUS, on);
     84 }
     85 
     86 inline bool displayBWTransactionPending() {
     87     android::status_t err = (android::status_t) android::FAILED_TRANSACTION;
     88     bool ret = false;
     89     android::sp<qService::IQService> binder = getBinder();
     90     android::Parcel inParcel, outParcel;
     91     if(binder != NULL) {
     92         err = binder->dispatch(qService::IQService::GET_BW_TRANSACTION_STATUS,
     93                 &inParcel , &outParcel);
     94         if(err != android::NO_ERROR){
     95           ALOGE("GET_BW_TRANSACTION_STATUS binder call failed err=%d", err);
     96           return ret;
     97         }
     98     }
     99     ret = outParcel.readInt32();
    100     return ret;
    101 }
    102 #endif /* end of include guard: QSERVICEUTILS_H */
    103