ICameraDeviceCallbacks.cpp revision 7b82efe7a376c882f8f938e1c41b8311a8cdda4a 
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 frameId, const CameraMetadata& result) {
61        ALOGV("onResultReceived");
62        Parcel data, reply;
63        data.writeInterfaceToken(ICameraDeviceCallbacks::getInterfaceDescriptor());
64        data.writeInt32(frameId);
65        result.writeToParcel(&data);
66        remote()->transact(RESULT_RECEIVED, data, &reply, IBinder::FLAG_ONEWAY);
67        data.writeNoException();
68    }
69};
70
71IMPLEMENT_META_INTERFACE(CameraDeviceCallbacks,
72                         "android.hardware.camera2.ICameraDeviceCallbacks");
73
74// ----------------------------------------------------------------------
75
76status_t BnCameraDeviceCallbacks::onTransact(
77    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
78{
79    ALOGV("onTransact - code = %d", code);
80    switch(code) {
81        case NOTIFY_CALLBACK: {
82            ALOGV("NOTIFY_CALLBACK");
83            CHECK_INTERFACE(ICameraDeviceCallbacks, data, reply);
84            int32_t msgType = data.readInt32();
85            int32_t ext1 = data.readInt32();
86            int32_t ext2 = data.readInt32();
87            notifyCallback(msgType, ext1, ext2);
88            data.readExceptionCode();
89            return NO_ERROR;
90        } break;
91        case RESULT_RECEIVED: {
92            ALOGV("RESULT_RECEIVED");
93            CHECK_INTERFACE(ICameraDeviceCallbacks, data, reply);
94            int32_t frameId = data.readInt32();
95            CameraMetadata result;
96            result.readFromParcel(const_cast<Parcel*>(&data));
97            onResultReceived(frameId, result);
98            data.readExceptionCode();
99            return NO_ERROR;
100            break;
101        }
102        default:
103            return BBinder::onTransact(code, data, reply, flags);
104    }
105}
106
107// ----------------------------------------------------------------------------
108
109}; // namespace android
110