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      1 /*
      2  * Copyright (C) 2011 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 //#define LOG_NDEBUG 0
     18 #define LOG_TAG "ICameraRecordingProxy"
     19 #include <camera/CameraUtils.h>
     20 #include <camera/ICameraRecordingProxy.h>
     21 #include <camera/ICameraRecordingProxyListener.h>
     22 #include <binder/IMemory.h>
     23 #include <binder/Parcel.h>
     24 #include <media/hardware/HardwareAPI.h>
     25 #include <stdint.h>
     26 #include <utils/Log.h>
     27 
     28 namespace android {
     29 
     30 enum {
     31     START_RECORDING = IBinder::FIRST_CALL_TRANSACTION,
     32     STOP_RECORDING,
     33     RELEASE_RECORDING_FRAME,
     34     RELEASE_RECORDING_FRAME_HANDLE,
     35 };
     36 
     37 
     38 class BpCameraRecordingProxy: public BpInterface<ICameraRecordingProxy>
     39 {
     40 public:
     41     BpCameraRecordingProxy(const sp<IBinder>& impl)
     42         : BpInterface<ICameraRecordingProxy>(impl)
     43     {
     44     }
     45 
     46     status_t startRecording(const sp<ICameraRecordingProxyListener>& listener)
     47     {
     48         ALOGV("startRecording");
     49         Parcel data, reply;
     50         data.writeInterfaceToken(ICameraRecordingProxy::getInterfaceDescriptor());
     51         data.writeStrongBinder(IInterface::asBinder(listener));
     52         remote()->transact(START_RECORDING, data, &reply);
     53         return reply.readInt32();
     54     }
     55 
     56     void stopRecording()
     57     {
     58         ALOGV("stopRecording");
     59         Parcel data, reply;
     60         data.writeInterfaceToken(ICameraRecordingProxy::getInterfaceDescriptor());
     61         remote()->transact(STOP_RECORDING, data, &reply);
     62     }
     63 
     64     void releaseRecordingFrame(const sp<IMemory>& mem)
     65     {
     66         ALOGV("releaseRecordingFrame");
     67         Parcel data, reply;
     68         data.writeInterfaceToken(ICameraRecordingProxy::getInterfaceDescriptor());
     69         data.writeStrongBinder(IInterface::asBinder(mem));
     70         remote()->transact(RELEASE_RECORDING_FRAME, data, &reply);
     71     }
     72 
     73     void releaseRecordingFrameHandle(native_handle_t *handle) {
     74         ALOGV("releaseRecordingFrameHandle");
     75         Parcel data, reply;
     76         data.writeInterfaceToken(ICameraRecordingProxy::getInterfaceDescriptor());
     77         data.writeNativeHandle(handle);
     78 
     79         remote()->transact(RELEASE_RECORDING_FRAME_HANDLE, data, &reply);
     80 
     81         // Close the native handle because camera received a dup copy.
     82         native_handle_close(handle);
     83         native_handle_delete(handle);
     84     }
     85 };
     86 
     87 IMPLEMENT_META_INTERFACE(CameraRecordingProxy, "android.hardware.ICameraRecordingProxy");
     88 
     89 // ----------------------------------------------------------------------
     90 
     91 status_t BnCameraRecordingProxy::onTransact(
     92     uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
     93 {
     94     switch(code) {
     95         case START_RECORDING: {
     96             ALOGV("START_RECORDING");
     97             CHECK_INTERFACE(ICameraRecordingProxy, data, reply);
     98             sp<ICameraRecordingProxyListener> listener =
     99                 interface_cast<ICameraRecordingProxyListener>(data.readStrongBinder());
    100             reply->writeInt32(startRecording(listener));
    101             return NO_ERROR;
    102         } break;
    103         case STOP_RECORDING: {
    104             ALOGV("STOP_RECORDING");
    105             CHECK_INTERFACE(ICameraRecordingProxy, data, reply);
    106             stopRecording();
    107             return NO_ERROR;
    108         } break;
    109         case RELEASE_RECORDING_FRAME: {
    110             ALOGV("RELEASE_RECORDING_FRAME");
    111             CHECK_INTERFACE(ICameraRecordingProxy, data, reply);
    112             sp<IMemory> mem = interface_cast<IMemory>(data.readStrongBinder());
    113             releaseRecordingFrame(mem);
    114             return NO_ERROR;
    115         } break;
    116         case RELEASE_RECORDING_FRAME_HANDLE: {
    117             ALOGV("RELEASE_RECORDING_FRAME_HANDLE");
    118             CHECK_INTERFACE(ICameraRecordingProxy, data, reply);
    119 
    120             // releaseRecordingFrameHandle will be responsble to close the native handle.
    121             releaseRecordingFrameHandle(data.readNativeHandle());
    122             return NO_ERROR;
    123         } break;
    124         default:
    125             return BBinder::onTransact(code, data, reply, flags);
    126     }
    127 }
    128 
    129 // ----------------------------------------------------------------------------
    130 
    131 }; // namespace android
    132 
    133