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/CameraUtils.h>
24 #include <android/hardware/ICameraClient.h>
25 #include <media/hardware/HardwareAPI.h>
26
27 namespace android {
28 namespace hardware {
29
30 enum {
31 NOTIFY_CALLBACK = IBinder::FIRST_CALL_TRANSACTION,
32 DATA_CALLBACK,
33 DATA_CALLBACK_TIMESTAMP,
34 RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP,
35 RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP_BATCH,
36 };
37
38 class BpCameraClient: public BpInterface<ICameraClient>
39 {
40 public:
BpCameraClient(const sp<IBinder> & impl)41 explicit BpCameraClient(const sp<IBinder>& impl)
42 : BpInterface<ICameraClient>(impl)
43 {
44 }
45
46 // generic callback from camera service to app
notifyCallback(int32_t msgType,int32_t ext1,int32_t ext2)47 void notifyCallback(int32_t msgType, int32_t ext1, int32_t ext2)
48 {
49 ALOGV("notifyCallback");
50 Parcel data, reply;
51 data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
52 data.writeInt32(msgType);
53 data.writeInt32(ext1);
54 data.writeInt32(ext2);
55 remote()->transact(NOTIFY_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
56 }
57
58 // generic data callback from camera service to app with image data
dataCallback(int32_t msgType,const sp<IMemory> & imageData,camera_frame_metadata_t * metadata)59 void dataCallback(int32_t msgType, const sp<IMemory>& imageData,
60 camera_frame_metadata_t *metadata)
61 {
62 ALOGV("dataCallback");
63 Parcel data, reply;
64 data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
65 data.writeInt32(msgType);
66 data.writeStrongBinder(IInterface::asBinder(imageData));
67 if (metadata) {
68 data.writeInt32(metadata->number_of_faces);
69 data.write(metadata->faces, sizeof(camera_face_t) * metadata->number_of_faces);
70 }
71 remote()->transact(DATA_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
72 }
73
74 // generic data callback from camera service to app with image data
dataCallbackTimestamp(nsecs_t timestamp,int32_t msgType,const sp<IMemory> & imageData)75 void dataCallbackTimestamp(nsecs_t timestamp, int32_t msgType, const sp<IMemory>& imageData)
76 {
77 ALOGV("dataCallback");
78 Parcel data, reply;
79 data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
80 data.writeInt64(timestamp);
81 data.writeInt32(msgType);
82 data.writeStrongBinder(IInterface::asBinder(imageData));
83 remote()->transact(DATA_CALLBACK_TIMESTAMP, data, &reply, IBinder::FLAG_ONEWAY);
84 }
85
recordingFrameHandleCallbackTimestamp(nsecs_t timestamp,native_handle_t * handle)86 void recordingFrameHandleCallbackTimestamp(nsecs_t timestamp, native_handle_t* handle) {
87 ALOGV("recordingFrameHandleCallbackTimestamp");
88 Parcel data, reply;
89 data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
90 data.writeInt64(timestamp);
91 data.writeNativeHandle(handle);
92 remote()->transact(RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP, data, &reply,
93 IBinder::FLAG_ONEWAY);
94 }
95
recordingFrameHandleCallbackTimestampBatch(const std::vector<nsecs_t> & timestamps,const std::vector<native_handle_t * > & handles)96 void recordingFrameHandleCallbackTimestampBatch(
97 const std::vector<nsecs_t>& timestamps,
98 const std::vector<native_handle_t*>& handles) {
99 ALOGV("recordingFrameHandleCallbackTimestampBatch");
100 Parcel data, reply;
101 data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
102 uint32_t n = timestamps.size();
103 if (n != handles.size()) {
104 ALOGE("%s: size of timestamps(%zu) and handles(%zu) mismatch!",
105 __FUNCTION__, timestamps.size(), handles.size());
106 return;
107 }
108 data.writeUint32(n);
109 for (auto ts : timestamps) {
110 data.writeInt64(ts);
111 }
112 for (auto& handle : handles) {
113 data.writeNativeHandle(handle);
114 }
115 remote()->transact(RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP_BATCH, data, &reply,
116 IBinder::FLAG_ONEWAY);
117 }
118 };
119
120 IMPLEMENT_META_INTERFACE(CameraClient, "android.hardware.ICameraClient");
121
122 // ----------------------------------------------------------------------
123
onTransact(uint32_t code,const Parcel & data,Parcel * reply,uint32_t flags)124 status_t BnCameraClient::onTransact(
125 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
126 {
127 switch(code) {
128 case NOTIFY_CALLBACK: {
129 ALOGV("NOTIFY_CALLBACK");
130 CHECK_INTERFACE(ICameraClient, data, reply);
131 int32_t msgType = data.readInt32();
132 int32_t ext1 = data.readInt32();
133 int32_t ext2 = data.readInt32();
134 notifyCallback(msgType, ext1, ext2);
135 return NO_ERROR;
136 } break;
137 case DATA_CALLBACK: {
138 ALOGV("DATA_CALLBACK");
139 CHECK_INTERFACE(ICameraClient, data, reply);
140 int32_t msgType = data.readInt32();
141 sp<IMemory> imageData = interface_cast<IMemory>(data.readStrongBinder());
142 camera_frame_metadata_t metadata;
143 if (data.dataAvail() > 0) {
144 metadata.number_of_faces = data.readInt32();
145 // Zero faces is a valid case, to notify clients that no faces are now visible
146 if (metadata.number_of_faces < 0 ||
147 metadata.number_of_faces > (int32_t)(INT32_MAX / sizeof(camera_face_t))) {
148 ALOGE("%s: Too large face count: %d", __FUNCTION__, metadata.number_of_faces);
149 return BAD_VALUE;
150 }
151 metadata.faces = (camera_face_t *) data.readInplace(
152 sizeof(camera_face_t) * metadata.number_of_faces);
153 }
154 dataCallback(msgType, imageData, &metadata);
155 return NO_ERROR;
156 } break;
157 case DATA_CALLBACK_TIMESTAMP: {
158 ALOGV("DATA_CALLBACK_TIMESTAMP");
159 CHECK_INTERFACE(ICameraClient, data, reply);
160 nsecs_t timestamp = data.readInt64();
161 int32_t msgType = data.readInt32();
162 sp<IMemory> imageData = interface_cast<IMemory>(data.readStrongBinder());
163 dataCallbackTimestamp(timestamp, msgType, imageData);
164 return NO_ERROR;
165 } break;
166 case RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP: {
167 ALOGV("RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP");
168 CHECK_INTERFACE(ICameraClient, data, reply);
169 nsecs_t timestamp;
170 status_t res = data.readInt64(×tamp);
171 if (res != OK) {
172 ALOGE("%s: Failed to read timestamp: %s (%d)", __FUNCTION__, strerror(-res), res);
173 return BAD_VALUE;
174 }
175 native_handle_t* handle = data.readNativeHandle();
176 if (handle == nullptr) {
177 ALOGE("%s: Received a null native handle", __FUNCTION__);
178 return BAD_VALUE;
179 }
180
181 // The native handle will be freed in BpCamera::releaseRecordingFrameHandle.
182 recordingFrameHandleCallbackTimestamp(timestamp, handle);
183 return NO_ERROR;
184 } break;
185 case RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP_BATCH: {
186 ALOGV("RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP_BATCH");
187 CHECK_INTERFACE(ICameraClient, data, reply);
188 uint32_t n = 0;
189 status_t res = data.readUint32(&n);
190 if (res != OK) {
191 ALOGE("%s: Failed to read batch size: %s (%d)", __FUNCTION__, strerror(-res), res);
192 return BAD_VALUE;
193 }
194 std::vector<nsecs_t> timestamps;
195 std::vector<native_handle_t*> handles;
196 timestamps.reserve(n);
197 handles.reserve(n);
198 for (uint32_t i = 0; i < n; i++) {
199 nsecs_t t;
200 res = data.readInt64(&t);
201 if (res != OK) {
202 ALOGE("%s: Failed to read timestamp[%d]: %s (%d)",
203 __FUNCTION__, i, strerror(-res), res);
204 return BAD_VALUE;
205 }
206 timestamps.push_back(t);
207 }
208 for (uint32_t i = 0; i < n; i++) {
209 native_handle_t* handle = data.readNativeHandle();
210 if (handle == nullptr) {
211 ALOGE("%s: Received a null native handle at handles[%d]",
212 __FUNCTION__, i);
213 return BAD_VALUE;
214 }
215 handles.push_back(handle);
216 }
217
218 // The native handle will be freed in BpCamera::releaseRecordingFrameHandleBatch.
219 recordingFrameHandleCallbackTimestampBatch(timestamps, handles);
220 return NO_ERROR;
221 } break;
222 default:
223 return BBinder::onTransact(code, data, reply, flags);
224 }
225 }
226
227 // ----------------------------------------------------------------------------
228
229 } // namespace hardware
230 } // namespace android
231