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      1 /*
      2 **
      3 ** Copyright 2008, The Android Open Source Project
      4 **
      5 ** Licensed under the Apache License, Version 2.0 (the "License");
      6 ** you may not use this file except in compliance with the License.
      7 ** You may obtain a copy of the License at
      8 **
      9 **     http://www.apache.org/licenses/LICENSE-2.0
     10 **
     11 ** Unless required by applicable law or agreed to in writing, software
     12 ** distributed under the License is distributed on an "AS IS" BASIS,
     13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14 ** See the License for the specific language governing permissions and
     15 ** limitations under the License.
     16 */
     17 
     18 //#define LOG_NDEBUG 0
     19 #define LOG_TAG "ICameraClient"
     20 #include <utils/Log.h>
     21 #include <stdint.h>
     22 #include <sys/types.h>
     23 #include <camera/ICameraClient.h>
     24 
     25 namespace android {
     26 
     27 enum {
     28     NOTIFY_CALLBACK = IBinder::FIRST_CALL_TRANSACTION,
     29     DATA_CALLBACK,
     30     DATA_CALLBACK_TIMESTAMP,
     31 };
     32 
     33 class BpCameraClient: public BpInterface<ICameraClient>
     34 {
     35 public:
     36     BpCameraClient(const sp<IBinder>& impl)
     37         : BpInterface<ICameraClient>(impl)
     38     {
     39     }
     40 
     41     // generic callback from camera service to app
     42     void notifyCallback(int32_t msgType, int32_t ext1, int32_t ext2)
     43     {
     44         LOGV("notifyCallback");
     45         Parcel data, reply;
     46         data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
     47         data.writeInt32(msgType);
     48         data.writeInt32(ext1);
     49         data.writeInt32(ext2);
     50         remote()->transact(NOTIFY_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
     51     }
     52 
     53     // generic data callback from camera service to app with image data
     54     void dataCallback(int32_t msgType, const sp<IMemory>& imageData)
     55     {
     56         LOGV("dataCallback");
     57         Parcel data, reply;
     58         data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
     59         data.writeInt32(msgType);
     60         data.writeStrongBinder(imageData->asBinder());
     61         remote()->transact(DATA_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
     62     }
     63 
     64     // generic data callback from camera service to app with image data
     65     void dataCallbackTimestamp(nsecs_t timestamp, int32_t msgType, const sp<IMemory>& imageData)
     66     {
     67         LOGV("dataCallback");
     68         Parcel data, reply;
     69         data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
     70         data.writeInt64(timestamp);
     71         data.writeInt32(msgType);
     72         data.writeStrongBinder(imageData->asBinder());
     73         remote()->transact(DATA_CALLBACK_TIMESTAMP, data, &reply, IBinder::FLAG_ONEWAY);
     74     }
     75 };
     76 
     77 IMPLEMENT_META_INTERFACE(CameraClient, "android.hardware.ICameraClient");
     78 
     79 // ----------------------------------------------------------------------
     80 
     81 status_t BnCameraClient::onTransact(
     82     uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
     83 {
     84     switch(code) {
     85         case NOTIFY_CALLBACK: {
     86             LOGV("NOTIFY_CALLBACK");
     87             CHECK_INTERFACE(ICameraClient, data, reply);
     88             int32_t msgType = data.readInt32();
     89             int32_t ext1 = data.readInt32();
     90             int32_t ext2 = data.readInt32();
     91             notifyCallback(msgType, ext1, ext2);
     92             return NO_ERROR;
     93         } break;
     94         case DATA_CALLBACK: {
     95             LOGV("DATA_CALLBACK");
     96             CHECK_INTERFACE(ICameraClient, data, reply);
     97             int32_t msgType = data.readInt32();
     98             sp<IMemory> imageData = interface_cast<IMemory>(data.readStrongBinder());
     99             dataCallback(msgType, imageData);
    100             return NO_ERROR;
    101         } break;
    102         case DATA_CALLBACK_TIMESTAMP: {
    103             LOGV("DATA_CALLBACK_TIMESTAMP");
    104             CHECK_INTERFACE(ICameraClient, data, reply);
    105             nsecs_t timestamp = data.readInt64();
    106             int32_t msgType = data.readInt32();
    107             sp<IMemory> imageData = interface_cast<IMemory>(data.readStrongBinder());
    108             dataCallbackTimestamp(timestamp, msgType, imageData);
    109             return NO_ERROR;
    110         } break;
    111         default:
    112             return BBinder::onTransact(code, data, reply, flags);
    113     }
    114 }
    115 
    116 // ----------------------------------------------------------------------------
    117 
    118 }; // namespace android
    119 
    120