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 #include "utils/CameraThreadState.h"
36
37 namespace android {
38 using namespace camera2;
39
40 // Interface used by CameraService
41
42 template <typename TClientBase>
Camera2ClientBase(const sp<CameraService> & cameraService,const sp<TCamCallbacks> & remoteCallback,const String16 & clientPackageName,const String8 & cameraId,int api1CameraId,int cameraFacing,int clientPid,uid_t clientUid,int servicePid)43 Camera2ClientBase<TClientBase>::Camera2ClientBase(
44 const sp<CameraService>& cameraService,
45 const sp<TCamCallbacks>& remoteCallback,
46 const String16& clientPackageName,
47 const String8& cameraId,
48 int api1CameraId,
49 int cameraFacing,
50 int clientPid,
51 uid_t clientUid,
52 int servicePid):
53 TClientBase(cameraService, remoteCallback, clientPackageName,
54 cameraId, api1CameraId, cameraFacing, clientPid, clientUid, servicePid),
55 mSharedCameraCallbacks(remoteCallback),
56 mDeviceVersion(cameraService->getDeviceVersion(TClientBase::mCameraIdStr)),
57 mDevice(new Camera3Device(cameraId)),
58 mDeviceActive(false), mApi1CameraId(api1CameraId)
59 {
60 ALOGI("Camera %s: Opened. Client: %s (PID %d, UID %d)", cameraId.string(),
61 String8(clientPackageName).string(), clientPid, clientUid);
62
63 mInitialClientPid = clientPid;
64 LOG_ALWAYS_FATAL_IF(mDevice == 0, "Device should never be NULL here.");
65 }
66
67 template <typename TClientBase>
checkPid(const char * checkLocation) const68 status_t Camera2ClientBase<TClientBase>::checkPid(const char* checkLocation)
69 const {
70
71 int callingPid = CameraThreadState::getCallingPid();
72 if (callingPid == TClientBase::mClientPid) return NO_ERROR;
73
74 ALOGE("%s: attempt to use a locked camera from a different process"
75 " (old pid %d, new pid %d)", checkLocation, TClientBase::mClientPid, callingPid);
76 return PERMISSION_DENIED;
77 }
78
79 template <typename TClientBase>
initialize(sp<CameraProviderManager> manager,const String8 & monitorTags)80 status_t Camera2ClientBase<TClientBase>::initialize(sp<CameraProviderManager> manager,
81 const String8& monitorTags) {
82 return initializeImpl(manager, monitorTags);
83 }
84
85 template <typename TClientBase>
86 template <typename TProviderPtr>
initializeImpl(TProviderPtr providerPtr,const String8 & monitorTags)87 status_t Camera2ClientBase<TClientBase>::initializeImpl(TProviderPtr providerPtr,
88 const String8& monitorTags) {
89 ATRACE_CALL();
90 ALOGV("%s: Initializing client for camera %s", __FUNCTION__,
91 TClientBase::mCameraIdStr.string());
92 status_t res;
93
94 // Verify ops permissions
95 res = TClientBase::startCameraOps();
96 if (res != OK) {
97 return res;
98 }
99
100 if (mDevice == NULL) {
101 ALOGE("%s: Camera %s: No device connected",
102 __FUNCTION__, TClientBase::mCameraIdStr.string());
103 return NO_INIT;
104 }
105
106 res = mDevice->initialize(providerPtr, monitorTags);
107 if (res != OK) {
108 ALOGE("%s: Camera %s: unable to initialize device: %s (%d)",
109 __FUNCTION__, TClientBase::mCameraIdStr.string(), strerror(-res), res);
110 return res;
111 }
112
113 wp<CameraDeviceBase::NotificationListener> weakThis(this);
114 res = mDevice->setNotifyCallback(weakThis);
115
116 return OK;
117 }
118
119 template <typename TClientBase>
~Camera2ClientBase()120 Camera2ClientBase<TClientBase>::~Camera2ClientBase() {
121 ATRACE_CALL();
122
123 TClientBase::mDestructionStarted = true;
124
125 disconnect();
126
127 ALOGI("Closed Camera %s. Client was: %s (PID %d, UID %u)",
128 TClientBase::mCameraIdStr.string(),
129 String8(TClientBase::mClientPackageName).string(),
130 mInitialClientPid, TClientBase::mClientUid);
131 }
132
133 template <typename TClientBase>
dumpClient(int fd,const Vector<String16> & args)134 status_t Camera2ClientBase<TClientBase>::dumpClient(int fd,
135 const Vector<String16>& args) {
136 String8 result;
137 result.appendFormat("Camera2ClientBase[%s] (%p) PID: %d, dump:\n",
138 TClientBase::mCameraIdStr.string(),
139 (TClientBase::getRemoteCallback() != NULL ?
140 IInterface::asBinder(TClientBase::getRemoteCallback()).get() : NULL),
141 TClientBase::mClientPid);
142 result.append(" State: ");
143
144 write(fd, result.string(), result.size());
145 // TODO: print dynamic/request section from most recent requests
146
147 return dumpDevice(fd, args);
148 }
149
150 template <typename TClientBase>
dumpDevice(int fd,const Vector<String16> & args)151 status_t Camera2ClientBase<TClientBase>::dumpDevice(
152 int fd,
153 const Vector<String16>& args) {
154 String8 result;
155
156 result = " Device dump:\n";
157 write(fd, result.string(), result.size());
158
159 sp<CameraDeviceBase> device = mDevice;
160 if (!device.get()) {
161 result = " *** Device is detached\n";
162 write(fd, result.string(), result.size());
163 return NO_ERROR;
164 }
165
166 status_t res = device->dump(fd, args);
167 if (res != OK) {
168 result = String8::format(" Error dumping device: %s (%d)",
169 strerror(-res), res);
170 write(fd, result.string(), result.size());
171 }
172
173 return NO_ERROR;
174 }
175
176 // ICameraClient2BaseUser interface
177
178
179 template <typename TClientBase>
disconnect()180 binder::Status Camera2ClientBase<TClientBase>::disconnect() {
181 ATRACE_CALL();
182 Mutex::Autolock icl(mBinderSerializationLock);
183
184 binder::Status res = binder::Status::ok();
185 // Allow both client and the media server to disconnect at all times
186 int callingPid = CameraThreadState::getCallingPid();
187 if (callingPid != TClientBase::mClientPid &&
188 callingPid != TClientBase::mServicePid) return res;
189
190 ALOGV("Camera %s: Shutting down", TClientBase::mCameraIdStr.string());
191
192 detachDevice();
193
194 CameraService::BasicClient::disconnect();
195
196 ALOGV("Camera %s: Shut down complete complete", TClientBase::mCameraIdStr.string());
197
198 return res;
199 }
200
201 template <typename TClientBase>
detachDevice()202 void Camera2ClientBase<TClientBase>::detachDevice() {
203 if (mDevice == 0) return;
204 mDevice->disconnect();
205
206 ALOGV("Camera %s: Detach complete", TClientBase::mCameraIdStr.string());
207 }
208
209 template <typename TClientBase>
connect(const sp<TCamCallbacks> & client)210 status_t Camera2ClientBase<TClientBase>::connect(
211 const sp<TCamCallbacks>& client) {
212 ATRACE_CALL();
213 ALOGV("%s: E", __FUNCTION__);
214 Mutex::Autolock icl(mBinderSerializationLock);
215
216 if (TClientBase::mClientPid != 0 &&
217 CameraThreadState::getCallingPid() != TClientBase::mClientPid) {
218
219 ALOGE("%s: Camera %s: Connection attempt from pid %d; "
220 "current locked to pid %d",
221 __FUNCTION__,
222 TClientBase::mCameraIdStr.string(),
223 CameraThreadState::getCallingPid(),
224 TClientBase::mClientPid);
225 return BAD_VALUE;
226 }
227
228 TClientBase::mClientPid = CameraThreadState::getCallingPid();
229
230 TClientBase::mRemoteCallback = client;
231 mSharedCameraCallbacks = client;
232
233 return OK;
234 }
235
236 /** Device-related methods */
237
238 template <typename TClientBase>
notifyError(int32_t errorCode,const CaptureResultExtras & resultExtras)239 void Camera2ClientBase<TClientBase>::notifyError(
240 int32_t errorCode,
241 const CaptureResultExtras& resultExtras) {
242 ALOGE("Error condition %d reported by HAL, requestId %" PRId32, errorCode,
243 resultExtras.requestId);
244 }
245
246 template <typename TClientBase>
notifyIdle()247 void Camera2ClientBase<TClientBase>::notifyIdle() {
248 if (mDeviceActive) {
249 getCameraService()->updateProxyDeviceState(
250 hardware::ICameraServiceProxy::CAMERA_STATE_IDLE, TClientBase::mCameraIdStr,
251 TClientBase::mCameraFacing, TClientBase::mClientPackageName,
252 ((mApi1CameraId < 0) ? hardware::ICameraServiceProxy::CAMERA_API_LEVEL_2 :
253 hardware::ICameraServiceProxy::CAMERA_API_LEVEL_1));
254 }
255 mDeviceActive = false;
256
257 ALOGV("Camera device is now idle");
258 }
259
260 template <typename TClientBase>
notifyShutter(const CaptureResultExtras & resultExtras,nsecs_t timestamp)261 void Camera2ClientBase<TClientBase>::notifyShutter(const CaptureResultExtras& resultExtras,
262 nsecs_t timestamp) {
263 (void)resultExtras;
264 (void)timestamp;
265
266 if (!mDeviceActive) {
267 getCameraService()->updateProxyDeviceState(
268 hardware::ICameraServiceProxy::CAMERA_STATE_ACTIVE, TClientBase::mCameraIdStr,
269 TClientBase::mCameraFacing, TClientBase::mClientPackageName,
270 ((mApi1CameraId < 0) ? hardware::ICameraServiceProxy::CAMERA_API_LEVEL_2 :
271 hardware::ICameraServiceProxy::CAMERA_API_LEVEL_1));
272 }
273 mDeviceActive = true;
274
275 ALOGV("%s: Shutter notification for request id %" PRId32 " at time %" PRId64,
276 __FUNCTION__, resultExtras.requestId, timestamp);
277 }
278
279 template <typename TClientBase>
notifyAutoFocus(uint8_t newState,int triggerId)280 void Camera2ClientBase<TClientBase>::notifyAutoFocus(uint8_t newState,
281 int triggerId) {
282 (void)newState;
283 (void)triggerId;
284
285 ALOGV("%s: Autofocus state now %d, last trigger %d",
286 __FUNCTION__, newState, triggerId);
287
288 }
289
290 template <typename TClientBase>
notifyAutoExposure(uint8_t newState,int triggerId)291 void Camera2ClientBase<TClientBase>::notifyAutoExposure(uint8_t newState,
292 int triggerId) {
293 (void)newState;
294 (void)triggerId;
295
296 ALOGV("%s: Autoexposure state now %d, last trigger %d",
297 __FUNCTION__, newState, triggerId);
298 }
299
300 template <typename TClientBase>
notifyAutoWhitebalance(uint8_t newState,int triggerId)301 void Camera2ClientBase<TClientBase>::notifyAutoWhitebalance(uint8_t newState,
302 int triggerId) {
303 (void)newState;
304 (void)triggerId;
305
306 ALOGV("%s: Auto-whitebalance state now %d, last trigger %d",
307 __FUNCTION__, newState, triggerId);
308 }
309
310 template <typename TClientBase>
notifyPrepared(int streamId)311 void Camera2ClientBase<TClientBase>::notifyPrepared(int streamId) {
312 (void)streamId;
313
314 ALOGV("%s: Stream %d now prepared",
315 __FUNCTION__, streamId);
316 }
317
318 template <typename TClientBase>
notifyRequestQueueEmpty()319 void Camera2ClientBase<TClientBase>::notifyRequestQueueEmpty() {
320
321 ALOGV("%s: Request queue now empty", __FUNCTION__);
322 }
323
324 template <typename TClientBase>
notifyRepeatingRequestError(long lastFrameNumber)325 void Camera2ClientBase<TClientBase>::notifyRepeatingRequestError(long lastFrameNumber) {
326 (void)lastFrameNumber;
327
328 ALOGV("%s: Repeating request was stopped. Last frame number is %ld",
329 __FUNCTION__, lastFrameNumber);
330 }
331
332 template <typename TClientBase>
getCameraId() const333 int Camera2ClientBase<TClientBase>::getCameraId() const {
334 return mApi1CameraId;
335 }
336
337 template <typename TClientBase>
getCameraDeviceVersion() const338 int Camera2ClientBase<TClientBase>::getCameraDeviceVersion() const {
339 return mDeviceVersion;
340 }
341
342 template <typename TClientBase>
getCameraDevice()343 const sp<CameraDeviceBase>& Camera2ClientBase<TClientBase>::getCameraDevice() {
344 return mDevice;
345 }
346
347 template <typename TClientBase>
getCameraService()348 const sp<CameraService>& Camera2ClientBase<TClientBase>::getCameraService() {
349 return TClientBase::sCameraService;
350 }
351
352 template <typename TClientBase>
Lock(SharedCameraCallbacks & client)353 Camera2ClientBase<TClientBase>::SharedCameraCallbacks::Lock::Lock(
354 SharedCameraCallbacks &client) :
355
356 mRemoteCallback(client.mRemoteCallback),
357 mSharedClient(client) {
358
359 mSharedClient.mRemoteCallbackLock.lock();
360 }
361
362 template <typename TClientBase>
~Lock()363 Camera2ClientBase<TClientBase>::SharedCameraCallbacks::Lock::~Lock() {
364 mSharedClient.mRemoteCallbackLock.unlock();
365 }
366
367 template <typename TClientBase>
SharedCameraCallbacks(const sp<TCamCallbacks> & client)368 Camera2ClientBase<TClientBase>::SharedCameraCallbacks::SharedCameraCallbacks(
369 const sp<TCamCallbacks>&client) :
370
371 mRemoteCallback(client) {
372 }
373
374 template <typename TClientBase>
375 typename Camera2ClientBase<TClientBase>::SharedCameraCallbacks&
operator =(const sp<TCamCallbacks> & client)376 Camera2ClientBase<TClientBase>::SharedCameraCallbacks::operator=(
377 const sp<TCamCallbacks>&client) {
378
379 Mutex::Autolock l(mRemoteCallbackLock);
380 mRemoteCallback = client;
381 return *this;
382 }
383
384 template <typename TClientBase>
clear()385 void Camera2ClientBase<TClientBase>::SharedCameraCallbacks::clear() {
386 Mutex::Autolock l(mRemoteCallbackLock);
387 mRemoteCallback.clear();
388 }
389
390 template class Camera2ClientBase<CameraService::Client>;
391 template class Camera2ClientBase<CameraDeviceClientBase>;
392
393 } // namespace android
394