1/*
2**
3** Copyright 2008, 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 "ICameraClient"
20#include <utils/Log.h>
21#include <stdint.h>
22#include <sys/types.h>
23#include <camera/ICameraClient.h>
24
25namespace android {
26
27enum {
28    NOTIFY_CALLBACK = IBinder::FIRST_CALL_TRANSACTION,
29    DATA_CALLBACK,
30    DATA_CALLBACK_TIMESTAMP,
31};
32
33class BpCameraClient: public BpInterface<ICameraClient>
34{
35public:
36    BpCameraClient(const sp<IBinder>& impl)
37        : BpInterface<ICameraClient>(impl)
38    {
39    }
40
41    // generic callback from camera service to app
42    void notifyCallback(int32_t msgType, int32_t ext1, int32_t ext2)
43    {
44        ALOGV("notifyCallback");
45        Parcel data, reply;
46        data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
47        data.writeInt32(msgType);
48        data.writeInt32(ext1);
49        data.writeInt32(ext2);
50        remote()->transact(NOTIFY_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
51    }
52
53    // generic data callback from camera service to app with image data
54    void dataCallback(int32_t msgType, const sp<IMemory>& imageData,
55                      camera_frame_metadata_t *metadata)
56    {
57        ALOGV("dataCallback");
58        Parcel data, reply;
59        data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
60        data.writeInt32(msgType);
61        data.writeStrongBinder(imageData->asBinder());
62        if (metadata) {
63            data.writeInt32(metadata->number_of_faces);
64            data.write(metadata->faces, sizeof(camera_face_t) * metadata->number_of_faces);
65        }
66        remote()->transact(DATA_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
67    }
68
69    // generic data callback from camera service to app with image data
70    void dataCallbackTimestamp(nsecs_t timestamp, int32_t msgType, const sp<IMemory>& imageData)
71    {
72        ALOGV("dataCallback");
73        Parcel data, reply;
74        data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
75        data.writeInt64(timestamp);
76        data.writeInt32(msgType);
77        data.writeStrongBinder(imageData->asBinder());
78        remote()->transact(DATA_CALLBACK_TIMESTAMP, data, &reply, IBinder::FLAG_ONEWAY);
79    }
80};
81
82IMPLEMENT_META_INTERFACE(CameraClient, "android.hardware.ICameraClient");
83
84// ----------------------------------------------------------------------
85
86status_t BnCameraClient::onTransact(
87    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
88{
89    switch(code) {
90        case NOTIFY_CALLBACK: {
91            ALOGV("NOTIFY_CALLBACK");
92            CHECK_INTERFACE(ICameraClient, data, reply);
93            int32_t msgType = data.readInt32();
94            int32_t ext1 = data.readInt32();
95            int32_t ext2 = data.readInt32();
96            notifyCallback(msgType, ext1, ext2);
97            return NO_ERROR;
98        } break;
99        case DATA_CALLBACK: {
100            ALOGV("DATA_CALLBACK");
101            CHECK_INTERFACE(ICameraClient, data, reply);
102            int32_t msgType = data.readInt32();
103            sp<IMemory> imageData = interface_cast<IMemory>(data.readStrongBinder());
104            camera_frame_metadata_t *metadata = NULL;
105            if (data.dataAvail() > 0) {
106                metadata = new camera_frame_metadata_t;
107                metadata->number_of_faces = data.readInt32();
108                metadata->faces = (camera_face_t *) data.readInplace(
109                        sizeof(camera_face_t) * metadata->number_of_faces);
110            }
111            dataCallback(msgType, imageData, metadata);
112            if (metadata) delete metadata;
113            return NO_ERROR;
114        } break;
115        case DATA_CALLBACK_TIMESTAMP: {
116            ALOGV("DATA_CALLBACK_TIMESTAMP");
117            CHECK_INTERFACE(ICameraClient, data, reply);
118            nsecs_t timestamp = data.readInt64();
119            int32_t msgType = data.readInt32();
120            sp<IMemory> imageData = interface_cast<IMemory>(data.readStrongBinder());
121            dataCallbackTimestamp(timestamp, msgType, imageData);
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