IProCameraCallbacks.cpp revision bfb5d5ef5bae01efac171397260a7152782d92c7 
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 "IProCameraCallbacks"
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/IProCameraCallbacks.h>
30
31namespace android {
32
33enum {
34    NOTIFY_CALLBACK = IBinder::FIRST_CALL_TRANSACTION,
35    DATA_CALLBACK,
36    DATA_CALLBACK_TIMESTAMP,
37};
38
39class BpProCameraCallbacks: public BpInterface<IProCameraCallbacks>
40{
41public:
42    BpProCameraCallbacks(const sp<IBinder>& impl)
43        : BpInterface<IProCameraCallbacks>(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(IProCameraCallbacks::getInterfaceDescriptor());
53        data.writeInt32(msgType);
54        data.writeInt32(ext1);
55        data.writeInt32(ext2);
56        remote()->transact(NOTIFY_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
57    }
58
59    // generic data callback from camera service to app with image data
60    void dataCallback(int32_t msgType, const sp<IMemory>& imageData,
61                      camera_frame_metadata_t *metadata)
62    {
63        ALOGV("dataCallback");
64        Parcel data, reply;
65        data.writeInterfaceToken(IProCameraCallbacks::getInterfaceDescriptor());
66        data.writeInt32(msgType);
67        data.writeStrongBinder(imageData->asBinder());
68        if (metadata) {
69            data.writeInt32(metadata->number_of_faces);
70            data.write(metadata->faces,
71                            sizeof(camera_face_t) * metadata->number_of_faces);
72        }
73        remote()->transact(DATA_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
74    }
75
76    // generic data callback from camera service to app with image data
77    void dataCallbackTimestamp(nsecs_t timestamp, int32_t msgType,
78                                                  const sp<IMemory>& imageData)
79    {
80        ALOGV("dataCallback");
81        Parcel data, reply;
82        data.writeInterfaceToken(IProCameraCallbacks::getInterfaceDescriptor());
83        data.writeInt64(timestamp);
84        data.writeInt32(msgType);
85        data.writeStrongBinder(imageData->asBinder());
86        remote()->transact(DATA_CALLBACK_TIMESTAMP, data, &reply,
87                                                          IBinder::FLAG_ONEWAY);
88    }
89};
90
91IMPLEMENT_META_INTERFACE(ProCameraCallbacks,
92                                        "android.hardware.IProCameraCallbacks");
93
94// ----------------------------------------------------------------------
95
96status_t BnProCameraCallbacks::onTransact(
97    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
98{
99    switch(code) {
100        case NOTIFY_CALLBACK: {
101            ALOGV("NOTIFY_CALLBACK");
102            CHECK_INTERFACE(IProCameraCallbacks, data, reply);
103            int32_t msgType = data.readInt32();
104            int32_t ext1 = data.readInt32();
105            int32_t ext2 = data.readInt32();
106            notifyCallback(msgType, ext1, ext2);
107            return NO_ERROR;
108        } break;
109        case DATA_CALLBACK: {
110            ALOGV("DATA_CALLBACK");
111            CHECK_INTERFACE(IProCameraCallbacks, data, reply);
112            int32_t msgType = data.readInt32();
113            sp<IMemory> imageData = interface_cast<IMemory>(
114                                                       data.readStrongBinder());
115            camera_frame_metadata_t *metadata = NULL;
116            if (data.dataAvail() > 0) {
117                metadata = new camera_frame_metadata_t;
118                metadata->number_of_faces = data.readInt32();
119                metadata->faces = (camera_face_t *) data.readInplace(
120                        sizeof(camera_face_t) * metadata->number_of_faces);
121            }
122            dataCallback(msgType, imageData, metadata);
123            if (metadata) delete metadata;
124            return NO_ERROR;
125        } break;
126        case DATA_CALLBACK_TIMESTAMP: {
127            ALOGV("DATA_CALLBACK_TIMESTAMP");
128            CHECK_INTERFACE(IProCameraCallbacks, data, reply);
129            nsecs_t timestamp = data.readInt64();
130            int32_t msgType = data.readInt32();
131            sp<IMemory> imageData = interface_cast<IMemory>(
132                                                       data.readStrongBinder());
133            dataCallbackTimestamp(timestamp, msgType, imageData);
134            return NO_ERROR;
135        } break;
136        default:
137            return BBinder::onTransact(code, data, reply, flags);
138    }
139}
140
141// ----------------------------------------------------------------------------
142
143}; // namespace android
144
145