ICameraDeviceCallbacks.cpp revision 11d0d44d583f679638cc927bfffe920e495e90cc 
1/*
2**
3** Copyright 2013, 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 "ICameraDeviceCallbacks"
20#include <utils/Log.h>
21#include <stdint.h>
22#include <sys/types.h>
23
24#include <binder/Parcel.h>
25#include <gui/IGraphicBufferProducer.h>
26#include <gui/Surface.h>
27#include <utils/Mutex.h>
28
29#include <camera/camera2/ICameraDeviceCallbacks.h>
30#include "camera/CameraMetadata.h"
31
32namespace android {
33
34enum {
35    NOTIFY_CALLBACK = IBinder::FIRST_CALL_TRANSACTION,
36    RESULT_RECEIVED,
37};
38
39class BpCameraDeviceCallbacks: public BpInterface<ICameraDeviceCallbacks>
40{
41public:
42    BpCameraDeviceCallbacks(const sp<IBinder>& impl)
43        : BpInterface<ICameraDeviceCallbacks>(impl)
44    {
45    }
46
47    // generic callback from camera service to app
48    void notifyCallback(int32_t msgType, int32_t ext1, int32_t ext2)
49    {
50        ALOGV("notifyCallback");
51        Parcel data, reply;
52        data.writeInterfaceToken(ICameraDeviceCallbacks::getInterfaceDescriptor());
53        data.writeInt32(msgType);
54        data.writeInt32(ext1);
55        data.writeInt32(ext2);
56        remote()->transact(NOTIFY_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
57        data.writeNoException();
58    }
59
60    void onResultReceived(int32_t requestId, const CameraMetadata& result) {
61        ALOGV("onResultReceived");
62        Parcel data, reply;
63        data.writeInterfaceToken(ICameraDeviceCallbacks::getInterfaceDescriptor());
64        data.writeInt32(requestId);
65        data.writeInt32(1); // to mark presence of metadata object
66        result.writeToParcel(&data);
67        remote()->transact(RESULT_RECEIVED, data, &reply, IBinder::FLAG_ONEWAY);
68        data.writeNoException();
69    }
70};
71
72IMPLEMENT_META_INTERFACE(CameraDeviceCallbacks,
73                         "android.hardware.camera2.ICameraDeviceCallbacks");
74
75// ----------------------------------------------------------------------
76
77status_t BnCameraDeviceCallbacks::onTransact(
78    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
79{
80    ALOGV("onTransact - code = %d", code);
81    switch(code) {
82        case NOTIFY_CALLBACK: {
83            ALOGV("NOTIFY_CALLBACK");
84            CHECK_INTERFACE(ICameraDeviceCallbacks, data, reply);
85            int32_t msgType = data.readInt32();
86            int32_t ext1 = data.readInt32();
87            int32_t ext2 = data.readInt32();
88            notifyCallback(msgType, ext1, ext2);
89            data.readExceptionCode();
90            return NO_ERROR;
91        } break;
92        case RESULT_RECEIVED: {
93            ALOGV("RESULT_RECEIVED");
94            CHECK_INTERFACE(ICameraDeviceCallbacks, data, reply);
95            int32_t requestId = data.readInt32();
96            CameraMetadata result;
97            if (data.readInt32() != 0) {
98                result.readFromParcel(const_cast<Parcel*>(&data));
99            } else {
100                ALOGW("No metadata object is present in result");
101            }
102            onResultReceived(requestId, result);
103            data.readExceptionCode();
104            return NO_ERROR;
105            break;
106        }
107        default:
108            return BBinder::onTransact(code, data, reply, flags);
109    }
110}
111
112// ----------------------------------------------------------------------------
113
114}; // namespace android
115