ICameraDeviceCallbacks.cpp revision f1e98d857ec377f2c9b916073d40732e6ebb7ced 
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    CAMERA_ERROR = IBinder::FIRST_CALL_TRANSACTION,
36    CAMERA_IDLE,
37    CAPTURE_STARTED,
38    RESULT_RECEIVED,
39};
40
41class BpCameraDeviceCallbacks: public BpInterface<ICameraDeviceCallbacks>
42{
43public:
44    BpCameraDeviceCallbacks(const sp<IBinder>& impl)
45        : BpInterface<ICameraDeviceCallbacks>(impl)
46    {
47    }
48
49    void onDeviceError(CameraErrorCode errorCode)
50    {
51        ALOGV("onDeviceError");
52        Parcel data, reply;
53        data.writeInterfaceToken(ICameraDeviceCallbacks::getInterfaceDescriptor());
54        data.writeInt32(static_cast<int32_t>(errorCode));
55        remote()->transact(CAMERA_ERROR, data, &reply, IBinder::FLAG_ONEWAY);
56        data.writeNoException();
57    }
58
59    void onDeviceIdle()
60    {
61        ALOGV("onDeviceIdle");
62        Parcel data, reply;
63        data.writeInterfaceToken(ICameraDeviceCallbacks::getInterfaceDescriptor());
64        remote()->transact(CAMERA_IDLE, data, &reply, IBinder::FLAG_ONEWAY);
65        data.writeNoException();
66    }
67
68    void onCaptureStarted(int32_t requestId, int64_t timestamp)
69    {
70        ALOGV("onCaptureStarted");
71        Parcel data, reply;
72        data.writeInterfaceToken(ICameraDeviceCallbacks::getInterfaceDescriptor());
73        data.writeInt32(requestId);
74        data.writeInt64(timestamp);
75        remote()->transact(CAPTURE_STARTED, data, &reply, IBinder::FLAG_ONEWAY);
76        data.writeNoException();
77    }
78
79
80    void onResultReceived(int32_t requestId, const CameraMetadata& result) {
81        ALOGV("onResultReceived");
82        Parcel data, reply;
83        data.writeInterfaceToken(ICameraDeviceCallbacks::getInterfaceDescriptor());
84        data.writeInt32(requestId);
85        data.writeInt32(1); // to mark presence of metadata object
86        result.writeToParcel(&data);
87        remote()->transact(RESULT_RECEIVED, data, &reply, IBinder::FLAG_ONEWAY);
88        data.writeNoException();
89    }
90};
91
92IMPLEMENT_META_INTERFACE(CameraDeviceCallbacks,
93                         "android.hardware.camera2.ICameraDeviceCallbacks");
94
95// ----------------------------------------------------------------------
96
97status_t BnCameraDeviceCallbacks::onTransact(
98    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
99{
100    ALOGV("onTransact - code = %d", code);
101    switch(code) {
102        case CAMERA_ERROR: {
103            ALOGV("onDeviceError");
104            CHECK_INTERFACE(ICameraDeviceCallbacks, data, reply);
105            CameraErrorCode errorCode =
106                    static_cast<CameraErrorCode>(data.readInt32());
107            onDeviceError(errorCode);
108            data.readExceptionCode();
109            return NO_ERROR;
110        } break;
111        case CAMERA_IDLE: {
112            ALOGV("onDeviceIdle");
113            CHECK_INTERFACE(ICameraDeviceCallbacks, data, reply);
114            onDeviceIdle();
115            data.readExceptionCode();
116            return NO_ERROR;
117        } break;
118        case CAPTURE_STARTED: {
119            ALOGV("onCaptureStarted");
120            CHECK_INTERFACE(ICameraDeviceCallbacks, data, reply);
121            int32_t requestId = data.readInt32();
122            int64_t timestamp = data.readInt64();
123            onCaptureStarted(requestId, timestamp);
124            data.readExceptionCode();
125            return NO_ERROR;
126        } break;
127        case RESULT_RECEIVED: {
128            ALOGV("onResultReceived");
129            CHECK_INTERFACE(ICameraDeviceCallbacks, data, reply);
130            int32_t requestId = data.readInt32();
131            CameraMetadata result;
132            if (data.readInt32() != 0) {
133                result.readFromParcel(const_cast<Parcel*>(&data));
134            } else {
135                ALOGW("No metadata object is present in result");
136            }
137            onResultReceived(requestId, result);
138            data.readExceptionCode();
139            return NO_ERROR;
140        } break;
141        default:
142            return BBinder::onTransact(code, data, reply, flags);
143    }
144}
145
146// ----------------------------------------------------------------------------
147
148}; // namespace android
149