camera/ICameraRecordingProxy.cpp

   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