1 /*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define LOG_TAG "Camera2ClientBase"
18 #define ATRACE_TAG ATRACE_TAG_CAMERA
19 //#define LOG_NDEBUG 0
20
21 #include <inttypes.h>
22
23 #include <utils/Log.h>
24 #include <utils/Trace.h>
25
26 #include <cutils/properties.h>
27 #include <gui/Surface.h>
28 #include <gui/Surface.h>
29
30 #include "common/Camera2ClientBase.h"
31
32 #include "api2/CameraDeviceClient.h"
33
34 #include "device3/Camera3Device.h"
35
36 namespace android {
37 using namespace camera2;
38
getCallingPid()39 static int getCallingPid() {
40 return IPCThreadState::self()->getCallingPid();
41 }
42
43 // Interface used by CameraService
44
45 template <typename TClientBase>
Camera2ClientBase(const sp<CameraService> & cameraService,const sp<TCamCallbacks> & remoteCallback,const String16 & clientPackageName,int cameraId,int cameraFacing,int clientPid,uid_t clientUid,int servicePid)46 Camera2ClientBase<TClientBase>::Camera2ClientBase(
47 const sp<CameraService>& cameraService,
48 const sp<TCamCallbacks>& remoteCallback,
49 const String16& clientPackageName,
50 int cameraId,
51 int cameraFacing,
52 int clientPid,
53 uid_t clientUid,
54 int servicePid):
55 TClientBase(cameraService, remoteCallback, clientPackageName,
56 cameraId, cameraFacing, clientPid, clientUid, servicePid),
57 mSharedCameraCallbacks(remoteCallback),
58 mDeviceVersion(cameraService->getDeviceVersion(cameraId)),
59 mDeviceActive(false)
60 {
61 ALOGI("Camera %d: Opened. Client: %s (PID %d, UID %d)", cameraId,
62 String8(clientPackageName).string(), clientPid, clientUid);
63
64 mInitialClientPid = clientPid;
65 mDevice = new Camera3Device(cameraId);
66 LOG_ALWAYS_FATAL_IF(mDevice == 0, "Device should never be NULL here.");
67 }
68
69 template <typename TClientBase>
checkPid(const char * checkLocation) const70 status_t Camera2ClientBase<TClientBase>::checkPid(const char* checkLocation)
71 const {
72
73 int callingPid = getCallingPid();
74 if (callingPid == TClientBase::mClientPid) return NO_ERROR;
75
76 ALOGE("%s: attempt to use a locked camera from a different process"
77 " (old pid %d, new pid %d)", checkLocation, TClientBase::mClientPid, callingPid);
78 return PERMISSION_DENIED;
79 }
80
81 template <typename TClientBase>
initialize(CameraModule * module)82 status_t Camera2ClientBase<TClientBase>::initialize(CameraModule *module) {
83 ATRACE_CALL();
84 ALOGV("%s: Initializing client for camera %d", __FUNCTION__,
85 TClientBase::mCameraId);
86 status_t res;
87
88 // Verify ops permissions
89 res = TClientBase::startCameraOps();
90 if (res != OK) {
91 return res;
92 }
93
94 if (mDevice == NULL) {
95 ALOGE("%s: Camera %d: No device connected",
96 __FUNCTION__, TClientBase::mCameraId);
97 return NO_INIT;
98 }
99
100 res = mDevice->initialize(module);
101 if (res != OK) {
102 ALOGE("%s: Camera %d: unable to initialize device: %s (%d)",
103 __FUNCTION__, TClientBase::mCameraId, strerror(-res), res);
104 return res;
105 }
106
107 wp<CameraDeviceBase::NotificationListener> weakThis(this);
108 res = mDevice->setNotifyCallback(weakThis);
109
110 return OK;
111 }
112
113 template <typename TClientBase>
~Camera2ClientBase()114 Camera2ClientBase<TClientBase>::~Camera2ClientBase() {
115 ATRACE_CALL();
116
117 TClientBase::mDestructionStarted = true;
118
119 disconnect();
120
121 ALOGI("Closed Camera %d. Client was: %s (PID %d, UID %u)",
122 TClientBase::mCameraId,
123 String8(TClientBase::mClientPackageName).string(),
124 mInitialClientPid, TClientBase::mClientUid);
125 }
126
127 template <typename TClientBase>
dumpClient(int fd,const Vector<String16> & args)128 status_t Camera2ClientBase<TClientBase>::dumpClient(int fd,
129 const Vector<String16>& args) {
130 String8 result;
131 result.appendFormat("Camera2ClientBase[%d] (%p) PID: %d, dump:\n",
132 TClientBase::mCameraId,
133 (TClientBase::getRemoteCallback() != NULL ?
134 IInterface::asBinder(TClientBase::getRemoteCallback()).get() : NULL),
135 TClientBase::mClientPid);
136 result.append(" State: ");
137
138 write(fd, result.string(), result.size());
139 // TODO: print dynamic/request section from most recent requests
140
141 return dumpDevice(fd, args);
142 }
143
144 template <typename TClientBase>
dumpDevice(int fd,const Vector<String16> & args)145 status_t Camera2ClientBase<TClientBase>::dumpDevice(
146 int fd,
147 const Vector<String16>& args) {
148 String8 result;
149
150 result = " Device dump:\n";
151 write(fd, result.string(), result.size());
152
153 if (!mDevice.get()) {
154 result = " *** Device is detached\n";
155 write(fd, result.string(), result.size());
156 return NO_ERROR;
157 }
158
159 status_t res = mDevice->dump(fd, args);
160 if (res != OK) {
161 result = String8::format(" Error dumping device: %s (%d)",
162 strerror(-res), res);
163 write(fd, result.string(), result.size());
164 }
165
166 return NO_ERROR;
167 }
168
169 // ICameraClient2BaseUser interface
170
171
172 template <typename TClientBase>
disconnect()173 binder::Status Camera2ClientBase<TClientBase>::disconnect() {
174 ATRACE_CALL();
175 Mutex::Autolock icl(mBinderSerializationLock);
176
177 binder::Status res = binder::Status::ok();
178 // Allow both client and the media server to disconnect at all times
179 int callingPid = getCallingPid();
180 if (callingPid != TClientBase::mClientPid &&
181 callingPid != TClientBase::mServicePid) return res;
182
183 ALOGV("Camera %d: Shutting down", TClientBase::mCameraId);
184
185 detachDevice();
186
187 CameraService::BasicClient::disconnect();
188
189 ALOGV("Camera %d: Shut down complete complete", TClientBase::mCameraId);
190
191 return res;
192 }
193
194 template <typename TClientBase>
detachDevice()195 void Camera2ClientBase<TClientBase>::detachDevice() {
196 if (mDevice == 0) return;
197 mDevice->disconnect();
198
199 mDevice.clear();
200
201 ALOGV("Camera %d: Detach complete", TClientBase::mCameraId);
202 }
203
204 template <typename TClientBase>
connect(const sp<TCamCallbacks> & client)205 status_t Camera2ClientBase<TClientBase>::connect(
206 const sp<TCamCallbacks>& client) {
207 ATRACE_CALL();
208 ALOGV("%s: E", __FUNCTION__);
209 Mutex::Autolock icl(mBinderSerializationLock);
210
211 if (TClientBase::mClientPid != 0 &&
212 getCallingPid() != TClientBase::mClientPid) {
213
214 ALOGE("%s: Camera %d: Connection attempt from pid %d; "
215 "current locked to pid %d",
216 __FUNCTION__,
217 TClientBase::mCameraId,
218 getCallingPid(),
219 TClientBase::mClientPid);
220 return BAD_VALUE;
221 }
222
223 TClientBase::mClientPid = getCallingPid();
224
225 TClientBase::mRemoteCallback = client;
226 mSharedCameraCallbacks = client;
227
228 return OK;
229 }
230
231 /** Device-related methods */
232
233 template <typename TClientBase>
notifyError(int32_t errorCode,const CaptureResultExtras & resultExtras)234 void Camera2ClientBase<TClientBase>::notifyError(
235 int32_t errorCode,
236 const CaptureResultExtras& resultExtras) {
237 ALOGE("Error condition %d reported by HAL, requestId %" PRId32, errorCode,
238 resultExtras.requestId);
239 }
240
241 template <typename TClientBase>
notifyIdle()242 void Camera2ClientBase<TClientBase>::notifyIdle() {
243 if (mDeviceActive) {
244 getCameraService()->updateProxyDeviceState(
245 ICameraServiceProxy::CAMERA_STATE_IDLE,
246 String8::format("%d", TClientBase::mCameraId));
247 }
248 mDeviceActive = false;
249
250 ALOGV("Camera device is now idle");
251 }
252
253 template <typename TClientBase>
notifyShutter(const CaptureResultExtras & resultExtras,nsecs_t timestamp)254 void Camera2ClientBase<TClientBase>::notifyShutter(const CaptureResultExtras& resultExtras,
255 nsecs_t timestamp) {
256 (void)resultExtras;
257 (void)timestamp;
258
259 if (!mDeviceActive) {
260 getCameraService()->updateProxyDeviceState(
261 ICameraServiceProxy::CAMERA_STATE_ACTIVE,
262 String8::format("%d", TClientBase::mCameraId));
263 }
264 mDeviceActive = true;
265
266 ALOGV("%s: Shutter notification for request id %" PRId32 " at time %" PRId64,
267 __FUNCTION__, resultExtras.requestId, timestamp);
268 }
269
270 template <typename TClientBase>
notifyAutoFocus(uint8_t newState,int triggerId)271 void Camera2ClientBase<TClientBase>::notifyAutoFocus(uint8_t newState,
272 int triggerId) {
273 (void)newState;
274 (void)triggerId;
275
276 ALOGV("%s: Autofocus state now %d, last trigger %d",
277 __FUNCTION__, newState, triggerId);
278
279 }
280
281 template <typename TClientBase>
notifyAutoExposure(uint8_t newState,int triggerId)282 void Camera2ClientBase<TClientBase>::notifyAutoExposure(uint8_t newState,
283 int triggerId) {
284 (void)newState;
285 (void)triggerId;
286
287 ALOGV("%s: Autoexposure state now %d, last trigger %d",
288 __FUNCTION__, newState, triggerId);
289 }
290
291 template <typename TClientBase>
notifyAutoWhitebalance(uint8_t newState,int triggerId)292 void Camera2ClientBase<TClientBase>::notifyAutoWhitebalance(uint8_t newState,
293 int triggerId) {
294 (void)newState;
295 (void)triggerId;
296
297 ALOGV("%s: Auto-whitebalance state now %d, last trigger %d",
298 __FUNCTION__, newState, triggerId);
299 }
300
301 template <typename TClientBase>
notifyPrepared(int streamId)302 void Camera2ClientBase<TClientBase>::notifyPrepared(int streamId) {
303 (void)streamId;
304
305 ALOGV("%s: Stream %d now prepared",
306 __FUNCTION__, streamId);
307 }
308
309 template <typename TClientBase>
notifyRepeatingRequestError(long lastFrameNumber)310 void Camera2ClientBase<TClientBase>::notifyRepeatingRequestError(long lastFrameNumber) {
311 (void)lastFrameNumber;
312
313 ALOGV("%s: Repeating request was stopped. Last frame number is %ld",
314 __FUNCTION__, lastFrameNumber);
315 }
316
317 template <typename TClientBase>
getCameraId() const318 int Camera2ClientBase<TClientBase>::getCameraId() const {
319 return TClientBase::mCameraId;
320 }
321
322 template <typename TClientBase>
getCameraDeviceVersion() const323 int Camera2ClientBase<TClientBase>::getCameraDeviceVersion() const {
324 return mDeviceVersion;
325 }
326
327 template <typename TClientBase>
getCameraDevice()328 const sp<CameraDeviceBase>& Camera2ClientBase<TClientBase>::getCameraDevice() {
329 return mDevice;
330 }
331
332 template <typename TClientBase>
getCameraService()333 const sp<CameraService>& Camera2ClientBase<TClientBase>::getCameraService() {
334 return TClientBase::mCameraService;
335 }
336
337 template <typename TClientBase>
Lock(SharedCameraCallbacks & client)338 Camera2ClientBase<TClientBase>::SharedCameraCallbacks::Lock::Lock(
339 SharedCameraCallbacks &client) :
340
341 mRemoteCallback(client.mRemoteCallback),
342 mSharedClient(client) {
343
344 mSharedClient.mRemoteCallbackLock.lock();
345 }
346
347 template <typename TClientBase>
~Lock()348 Camera2ClientBase<TClientBase>::SharedCameraCallbacks::Lock::~Lock() {
349 mSharedClient.mRemoteCallbackLock.unlock();
350 }
351
352 template <typename TClientBase>
SharedCameraCallbacks(const sp<TCamCallbacks> & client)353 Camera2ClientBase<TClientBase>::SharedCameraCallbacks::SharedCameraCallbacks(
354 const sp<TCamCallbacks>&client) :
355
356 mRemoteCallback(client) {
357 }
358
359 template <typename TClientBase>
360 typename Camera2ClientBase<TClientBase>::SharedCameraCallbacks&
operator =(const sp<TCamCallbacks> & client)361 Camera2ClientBase<TClientBase>::SharedCameraCallbacks::operator=(
362 const sp<TCamCallbacks>&client) {
363
364 Mutex::Autolock l(mRemoteCallbackLock);
365 mRemoteCallback = client;
366 return *this;
367 }
368
369 template <typename TClientBase>
clear()370 void Camera2ClientBase<TClientBase>::SharedCameraCallbacks::clear() {
371 Mutex::Autolock l(mRemoteCallbackLock);
372 mRemoteCallback.clear();
373 }
374
375 template class Camera2ClientBase<CameraService::Client>;
376 template class Camera2ClientBase<CameraDeviceClientBase>;
377
378 } // namespace android
379