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Mathias Agopian65ab4712010-07-14 17:59:35 -07001/*
2**
3** Copyright (C) 2008, The Android Open Source Project
Mathias Agopian65ab4712010-07-14 17:59:35 -07004**
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_TAG "CameraService"
Iliyan Malchev8951a972011-04-14 16:55:59 -070019//#define LOG_NDEBUG 0
Mathias Agopian65ab4712010-07-14 17:59:35 -070020
21#include <stdio.h>
22#include <sys/types.h>
23#include <pthread.h>
24
Eino-Ville Talvalaceb388d2013-02-19 10:40:14 -080025#include <binder/AppOpsManager.h>
Mathias Agopian65ab4712010-07-14 17:59:35 -070026#include <binder/IPCThreadState.h>
27#include <binder/IServiceManager.h>
28#include <binder/MemoryBase.h>
29#include <binder/MemoryHeapBase.h>
30#include <cutils/atomic.h>
Nipun Kwatrab5ca4612010-09-11 19:31:10 -070031#include <cutils/properties.h>
Mathias Agopiandf712ea2012-02-25 18:48:35 -080032#include <gui/Surface.h>
Mathias Agopian65ab4712010-07-14 17:59:35 -070033#include <hardware/hardware.h>
34#include <media/AudioSystem.h>
35#include <media/mediaplayer.h>
Mathias Agopian65ab4712010-07-14 17:59:35 -070036#include <utils/Errors.h>
37#include <utils/Log.h>
38#include <utils/String16.h>
39
40#include "CameraService.h"
Eino-Ville Talvala7b82efe2013-07-25 17:12:35 -070041#include "api1/CameraClient.h"
42#include "api1/Camera2Client.h"
43#include "api_pro/ProCamera2Client.h"
44#include "api2/CameraDeviceClient.h"
Igor Murashkin98e24722013-06-19 19:51:04 -070045#include "CameraDeviceFactory.h"
Mathias Agopian65ab4712010-07-14 17:59:35 -070046
47namespace android {
48
49// ----------------------------------------------------------------------------
50// Logging support -- this is for debugging only
51// Use "adb shell dumpsys media.camera -v 1" to change it.
Eino-Ville Talvala5e08d602012-05-16 14:59:25 -070052volatile int32_t gLogLevel = 0;
Mathias Agopian65ab4712010-07-14 17:59:35 -070053
Steve Blockb8a80522011-12-20 16:23:08 +000054#define LOG1(...) ALOGD_IF(gLogLevel >= 1, __VA_ARGS__);
55#define LOG2(...) ALOGD_IF(gLogLevel >= 2, __VA_ARGS__);
Mathias Agopian65ab4712010-07-14 17:59:35 -070056
57static void setLogLevel(int level) {
58 android_atomic_write(level, &gLogLevel);
59}
60
61// ----------------------------------------------------------------------------
62
63static int getCallingPid() {
64 return IPCThreadState::self()->getCallingPid();
65}
66
67static int getCallingUid() {
68 return IPCThreadState::self()->getCallingUid();
69}
70
Igor Murashkincba2c162013-03-20 15:56:31 -070071extern "C" {
72static void camera_device_status_change(
73 const struct camera_module_callbacks* callbacks,
74 int camera_id,
75 int new_status) {
76 sp<CameraService> cs = const_cast<CameraService*>(
77 static_cast<const CameraService*>(callbacks));
78
79 cs->onDeviceStatusChanged(
80 camera_id,
81 new_status);
82}
83} // extern "C"
84
Mathias Agopian65ab4712010-07-14 17:59:35 -070085// ----------------------------------------------------------------------------
86
87// This is ugly and only safe if we never re-create the CameraService, but
88// should be ok for now.
89static CameraService *gCameraService;
90
91CameraService::CameraService()
Eino-Ville Talvalaceb388d2013-02-19 10:40:14 -080092 :mSoundRef(0), mModule(0)
Mathias Agopian65ab4712010-07-14 17:59:35 -070093{
Steve Blockdf64d152012-01-04 20:05:49 +000094 ALOGI("CameraService started (pid=%d)", getpid());
Mathias Agopian65ab4712010-07-14 17:59:35 -070095 gCameraService = this;
Igor Murashkinbfc99152013-02-27 12:55:20 -080096
97 for (size_t i = 0; i < MAX_CAMERAS; ++i) {
Igor Murashkincba2c162013-03-20 15:56:31 -070098 mStatusList[i] = ICameraServiceListener::STATUS_PRESENT;
Igor Murashkinbfc99152013-02-27 12:55:20 -080099 }
Igor Murashkincba2c162013-03-20 15:56:31 -0700100
101 this->camera_device_status_change = android::camera_device_status_change;
Mathias Agopian65ab4712010-07-14 17:59:35 -0700102}
103
Iliyan Malchev8951a972011-04-14 16:55:59 -0700104void CameraService::onFirstRef()
105{
Igor Murashkin634a5152013-02-20 17:15:11 -0800106 LOG1("CameraService::onFirstRef");
107
Iliyan Malchev8951a972011-04-14 16:55:59 -0700108 BnCameraService::onFirstRef();
109
110 if (hw_get_module(CAMERA_HARDWARE_MODULE_ID,
111 (const hw_module_t **)&mModule) < 0) {
Steve Block29357bc2012-01-06 19:20:56 +0000112 ALOGE("Could not load camera HAL module");
Iliyan Malchev8951a972011-04-14 16:55:59 -0700113 mNumberOfCameras = 0;
114 }
115 else {
Alex Rayc0dd54f2013-02-20 13:39:37 -0800116 ALOGI("Loaded \"%s\" camera module", mModule->common.name);
Iliyan Malchev8951a972011-04-14 16:55:59 -0700117 mNumberOfCameras = mModule->get_number_of_cameras();
118 if (mNumberOfCameras > MAX_CAMERAS) {
Steve Block29357bc2012-01-06 19:20:56 +0000119 ALOGE("Number of cameras(%d) > MAX_CAMERAS(%d).",
Iliyan Malchev8951a972011-04-14 16:55:59 -0700120 mNumberOfCameras, MAX_CAMERAS);
121 mNumberOfCameras = MAX_CAMERAS;
122 }
123 for (int i = 0; i < mNumberOfCameras; i++) {
124 setCameraFree(i);
125 }
Igor Murashkincba2c162013-03-20 15:56:31 -0700126
127 if (mModule->common.module_api_version >=
128 CAMERA_MODULE_API_VERSION_2_1) {
129 mModule->set_callbacks(this);
130 }
Igor Murashkin98e24722013-06-19 19:51:04 -0700131
132 CameraDeviceFactory::registerService(this);
Iliyan Malchev8951a972011-04-14 16:55:59 -0700133 }
134}
135
Mathias Agopian65ab4712010-07-14 17:59:35 -0700136CameraService::~CameraService() {
137 for (int i = 0; i < mNumberOfCameras; i++) {
138 if (mBusy[i]) {
Steve Block29357bc2012-01-06 19:20:56 +0000139 ALOGE("camera %d is still in use in destructor!", i);
Mathias Agopian65ab4712010-07-14 17:59:35 -0700140 }
141 }
142
143 gCameraService = NULL;
144}
145
Igor Murashkincba2c162013-03-20 15:56:31 -0700146void CameraService::onDeviceStatusChanged(int cameraId,
147 int newStatus)
148{
149 ALOGI("%s: Status changed for cameraId=%d, newStatus=%d", __FUNCTION__,
150 cameraId, newStatus);
151
152 if (cameraId < 0 || cameraId >= MAX_CAMERAS) {
153 ALOGE("%s: Bad camera ID %d", __FUNCTION__, cameraId);
154 return;
155 }
156
157 if ((int)getStatus(cameraId) == newStatus) {
158 ALOGE("%s: State transition to the same status 0x%x not allowed",
159 __FUNCTION__, (uint32_t)newStatus);
160 return;
161 }
162
163 /* don't do this in updateStatus
164 since it is also called from connect and we could get into a deadlock */
165 if (newStatus == CAMERA_DEVICE_STATUS_NOT_PRESENT) {
166 Vector<sp<BasicClient> > clientsToDisconnect;
167 {
168 Mutex::Autolock al(mServiceLock);
169
170 /* Find all clients that we need to disconnect */
Igor Murashkine7ee7632013-06-11 18:10:18 -0700171 sp<BasicClient> client = mClient[cameraId].promote();
Igor Murashkincba2c162013-03-20 15:56:31 -0700172 if (client.get() != NULL) {
173 clientsToDisconnect.push_back(client);
174 }
175
176 int i = cameraId;
177 for (size_t j = 0; j < mProClientList[i].size(); ++j) {
178 sp<ProClient> cl = mProClientList[i][j].promote();
179 if (cl != NULL) {
180 clientsToDisconnect.push_back(cl);
181 }
182 }
183 }
184
185 /* now disconnect them. don't hold the lock
186 or we can get into a deadlock */
187
188 for (size_t i = 0; i < clientsToDisconnect.size(); ++i) {
189 sp<BasicClient> client = clientsToDisconnect[i];
190
191 client->disconnect();
192 /**
193 * The remote app will no longer be able to call methods on the
194 * client since the client PID will be reset to 0
195 */
196 }
197
198 ALOGV("%s: After unplug, disconnected %d clients",
199 __FUNCTION__, clientsToDisconnect.size());
200 }
201
202 updateStatus(
203 static_cast<ICameraServiceListener::Status>(newStatus), cameraId);
204
205}
206
Mathias Agopian65ab4712010-07-14 17:59:35 -0700207int32_t CameraService::getNumberOfCameras() {
208 return mNumberOfCameras;
209}
210
211status_t CameraService::getCameraInfo(int cameraId,
212 struct CameraInfo* cameraInfo) {
Iliyan Malchev8951a972011-04-14 16:55:59 -0700213 if (!mModule) {
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700214 return -ENODEV;
Iliyan Malchev8951a972011-04-14 16:55:59 -0700215 }
216
Mathias Agopian65ab4712010-07-14 17:59:35 -0700217 if (cameraId < 0 || cameraId >= mNumberOfCameras) {
218 return BAD_VALUE;
219 }
220
Iliyan Malchev8951a972011-04-14 16:55:59 -0700221 struct camera_info info;
222 status_t rc = mModule->get_camera_info(cameraId, &info);
223 cameraInfo->facing = info.facing;
224 cameraInfo->orientation = info.orientation;
225 return rc;
Mathias Agopian65ab4712010-07-14 17:59:35 -0700226}
227
Zhijun He2b59be82013-09-25 10:14:30 -0700228status_t CameraService::getCameraCharacteristics(int cameraId,
229 CameraMetadata* cameraInfo) {
230 if (!cameraInfo) {
231 ALOGE("%s: cameraInfo is NULL", __FUNCTION__);
232 return BAD_VALUE;
233 }
234
235 if (!mModule) {
236 ALOGE("%s: camera hardware module doesn't exist", __FUNCTION__);
237 return -ENODEV;
238 }
239
240 if (mModule->common.module_api_version < CAMERA_MODULE_API_VERSION_2_0) {
241 // TODO: Remove this check once HAL1 shim is in place.
242 ALOGE("%s: Only HAL module version V2 or higher supports static metadata", __FUNCTION__);
243 return BAD_VALUE;
244 }
245
246 if (cameraId < 0 || cameraId >= mNumberOfCameras) {
247 ALOGE("%s: Invalid camera id: %d", __FUNCTION__, cameraId);
248 return BAD_VALUE;
249 }
250
251 int facing;
252 if (getDeviceVersion(cameraId, &facing) == CAMERA_DEVICE_API_VERSION_1_0) {
253 // TODO: Remove this check once HAL1 shim is in place.
254 ALOGE("%s: HAL1 doesn't support static metadata yet", __FUNCTION__);
255 return BAD_VALUE;
256 }
257
Zhijun Hef05e50e2013-10-01 11:05:33 -0700258 if (getDeviceVersion(cameraId, &facing) <= CAMERA_DEVICE_API_VERSION_2_1) {
259 // Disable HAL2.x support for camera2 API for now.
260 ALOGW("%s: HAL2.x doesn't support getCameraCharacteristics for now", __FUNCTION__);
261 return BAD_VALUE;
262 }
263
Zhijun He2b59be82013-09-25 10:14:30 -0700264 struct camera_info info;
265 status_t ret = mModule->get_camera_info(cameraId, &info);
266 *cameraInfo = info.static_camera_characteristics;
267
268 return ret;
269}
270
Igor Murashkin634a5152013-02-20 17:15:11 -0800271int CameraService::getDeviceVersion(int cameraId, int* facing) {
272 struct camera_info info;
273 if (mModule->get_camera_info(cameraId, &info) != OK) {
274 return -1;
275 }
276
277 int deviceVersion;
278 if (mModule->common.module_api_version >= CAMERA_MODULE_API_VERSION_2_0) {
279 deviceVersion = info.device_version;
280 } else {
281 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0;
282 }
283
284 if (facing) {
285 *facing = info.facing;
286 }
287
288 return deviceVersion;
289}
290
Igor Murashkinbfc99152013-02-27 12:55:20 -0800291bool CameraService::isValidCameraId(int cameraId) {
292 int facing;
293 int deviceVersion = getDeviceVersion(cameraId, &facing);
294
295 switch(deviceVersion) {
296 case CAMERA_DEVICE_API_VERSION_1_0:
297 case CAMERA_DEVICE_API_VERSION_2_0:
298 case CAMERA_DEVICE_API_VERSION_2_1:
299 case CAMERA_DEVICE_API_VERSION_3_0:
300 return true;
301 default:
302 return false;
303 }
304
305 return false;
306}
307
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700308status_t CameraService::validateConnect(int cameraId,
Igor Murashkine6800ce2013-03-04 17:25:57 -0800309 /*inout*/
310 int& clientUid) const {
Eino-Ville Talvalaceb388d2013-02-19 10:40:14 -0800311
Mathias Agopian65ab4712010-07-14 17:59:35 -0700312 int callingPid = getCallingPid();
Tyler Luu5861a9a2011-10-06 00:00:03 -0500313
Eino-Ville Talvalaceb388d2013-02-19 10:40:14 -0800314 if (clientUid == USE_CALLING_UID) {
315 clientUid = getCallingUid();
316 } else {
317 // We only trust our own process to forward client UIDs
318 if (callingPid != getpid()) {
319 ALOGE("CameraService::connect X (pid %d) rejected (don't trust clientUid)",
320 callingPid);
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700321 return PERMISSION_DENIED;
Eino-Ville Talvalaceb388d2013-02-19 10:40:14 -0800322 }
323 }
Mathias Agopian65ab4712010-07-14 17:59:35 -0700324
Iliyan Malchev8951a972011-04-14 16:55:59 -0700325 if (!mModule) {
Steve Block29357bc2012-01-06 19:20:56 +0000326 ALOGE("Camera HAL module not loaded");
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700327 return -ENODEV;
Iliyan Malchev8951a972011-04-14 16:55:59 -0700328 }
329
Mathias Agopian65ab4712010-07-14 17:59:35 -0700330 if (cameraId < 0 || cameraId >= mNumberOfCameras) {
Steve Block29357bc2012-01-06 19:20:56 +0000331 ALOGE("CameraService::connect X (pid %d) rejected (invalid cameraId %d).",
Mathias Agopian65ab4712010-07-14 17:59:35 -0700332 callingPid, cameraId);
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700333 return -ENODEV;
Mathias Agopian65ab4712010-07-14 17:59:35 -0700334 }
335
Wu-cheng Lia3355432011-05-20 14:54:25 +0800336 char value[PROPERTY_VALUE_MAX];
337 property_get("sys.secpolicy.camera.disabled", value, "0");
338 if (strcmp(value, "1") == 0) {
339 // Camera is disabled by DevicePolicyManager.
Steve Blockdf64d152012-01-04 20:05:49 +0000340 ALOGI("Camera is disabled. connect X (pid %d) rejected", callingPid);
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700341 return -EACCES;
Wu-cheng Lia3355432011-05-20 14:54:25 +0800342 }
343
Igor Murashkincba2c162013-03-20 15:56:31 -0700344 ICameraServiceListener::Status currentStatus = getStatus(cameraId);
345 if (currentStatus == ICameraServiceListener::STATUS_NOT_PRESENT) {
346 ALOGI("Camera is not plugged in,"
347 " connect X (pid %d) rejected", callingPid);
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700348 return -ENODEV;
Igor Murashkincba2c162013-03-20 15:56:31 -0700349 } else if (currentStatus == ICameraServiceListener::STATUS_ENUMERATING) {
350 ALOGI("Camera is enumerating,"
351 " connect X (pid %d) rejected", callingPid);
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700352 return -EBUSY;
Igor Murashkincba2c162013-03-20 15:56:31 -0700353 }
354 // Else don't check for STATUS_NOT_AVAILABLE.
355 // -- It's done implicitly in canConnectUnsafe /w the mBusy array
356
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700357 return OK;
Igor Murashkine6800ce2013-03-04 17:25:57 -0800358}
359
360bool CameraService::canConnectUnsafe(int cameraId,
361 const String16& clientPackageName,
362 const sp<IBinder>& remoteCallback,
Igor Murashkine7ee7632013-06-11 18:10:18 -0700363 sp<BasicClient> &client) {
Igor Murashkine6800ce2013-03-04 17:25:57 -0800364 String8 clientName8(clientPackageName);
365 int callingPid = getCallingPid();
366
Wu-cheng Li08ad5ef2012-04-19 12:35:00 +0800367 if (mClient[cameraId] != 0) {
368 client = mClient[cameraId].promote();
369 if (client != 0) {
Igor Murashkine7ee7632013-06-11 18:10:18 -0700370 if (remoteCallback == client->getRemote()) {
Wu-cheng Li08ad5ef2012-04-19 12:35:00 +0800371 LOG1("CameraService::connect X (pid %d) (the same client)",
372 callingPid);
Igor Murashkine6800ce2013-03-04 17:25:57 -0800373 return true;
Wu-cheng Li08ad5ef2012-04-19 12:35:00 +0800374 } else {
Igor Murashkine6800ce2013-03-04 17:25:57 -0800375 // TODOSC: need to support 1 regular client,
376 // multiple shared clients here
377 ALOGW("CameraService::connect X (pid %d) rejected"
378 " (existing client).", callingPid);
379 return false;
Wu-cheng Li2fd24402012-02-23 19:01:00 -0800380 }
Wu-cheng Li2fd24402012-02-23 19:01:00 -0800381 }
Wu-cheng Li08ad5ef2012-04-19 12:35:00 +0800382 mClient[cameraId].clear();
383 }
384
Igor Murashkin634a5152013-02-20 17:15:11 -0800385 /*
386 mBusy is set to false as the last step of the Client destructor,
387 after which it is guaranteed that the Client destructor has finished (
388 including any inherited destructors)
389
390 We only need this for a Client subclasses since we don't allow
391 multiple Clents to be opened concurrently, but multiple BasicClient
392 would be fine
393 */
Wu-cheng Li08ad5ef2012-04-19 12:35:00 +0800394 if (mBusy[cameraId]) {
Eino-Ville Talvalaceb388d2013-02-19 10:40:14 -0800395 ALOGW("CameraService::connect X (pid %d, \"%s\") rejected"
396 " (camera %d is still busy).", callingPid,
397 clientName8.string(), cameraId);
Igor Murashkine6800ce2013-03-04 17:25:57 -0800398 return false;
399 }
400
401 return true;
402}
403
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700404status_t CameraService::connect(
Igor Murashkine6800ce2013-03-04 17:25:57 -0800405 const sp<ICameraClient>& cameraClient,
406 int cameraId,
407 const String16& clientPackageName,
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700408 int clientUid,
409 /*out*/
410 sp<ICamera>& device) {
Igor Murashkine6800ce2013-03-04 17:25:57 -0800411
412 String8 clientName8(clientPackageName);
413 int callingPid = getCallingPid();
414
415 LOG1("CameraService::connect E (pid %d \"%s\", id %d)", callingPid,
416 clientName8.string(), cameraId);
417
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700418 status_t status = validateConnect(cameraId, /*inout*/clientUid);
419 if (status != OK) {
420 return status;
Mathias Agopian65ab4712010-07-14 17:59:35 -0700421 }
422
Igor Murashkine6800ce2013-03-04 17:25:57 -0800423
Igor Murashkine7ee7632013-06-11 18:10:18 -0700424 sp<Client> client;
Igor Murashkinacd695c2013-03-13 17:23:00 -0700425 {
426 Mutex::Autolock lock(mServiceLock);
Igor Murashkine7ee7632013-06-11 18:10:18 -0700427 sp<BasicClient> clientTmp;
Igor Murashkinacd695c2013-03-13 17:23:00 -0700428 if (!canConnectUnsafe(cameraId, clientPackageName,
429 cameraClient->asBinder(),
Igor Murashkine7ee7632013-06-11 18:10:18 -0700430 /*out*/clientTmp)) {
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700431 return -EBUSY;
Igor Murashkinacd695c2013-03-13 17:23:00 -0700432 } else if (client.get() != NULL) {
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700433 device = static_cast<Client*>(clientTmp.get());
434 return OK;
Igor Murashkinacd695c2013-03-13 17:23:00 -0700435 }
436
437 int facing = -1;
438 int deviceVersion = getDeviceVersion(cameraId, &facing);
439
440 // If there are other non-exclusive users of the camera,
441 // this will tear them down before we can reuse the camera
442 if (isValidCameraId(cameraId)) {
Igor Murashkincba2c162013-03-20 15:56:31 -0700443 // transition from PRESENT -> NOT_AVAILABLE
Igor Murashkinacd695c2013-03-13 17:23:00 -0700444 updateStatus(ICameraServiceListener::STATUS_NOT_AVAILABLE,
445 cameraId);
446 }
447
448 switch(deviceVersion) {
449 case CAMERA_DEVICE_API_VERSION_1_0:
450 client = new CameraClient(this, cameraClient,
451 clientPackageName, cameraId,
452 facing, callingPid, clientUid, getpid());
453 break;
454 case CAMERA_DEVICE_API_VERSION_2_0:
455 case CAMERA_DEVICE_API_VERSION_2_1:
456 case CAMERA_DEVICE_API_VERSION_3_0:
457 client = new Camera2Client(this, cameraClient,
458 clientPackageName, cameraId,
459 facing, callingPid, clientUid, getpid(),
460 deviceVersion);
461 break;
462 case -1:
463 ALOGE("Invalid camera id %d", cameraId);
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700464 return BAD_VALUE;
Igor Murashkinacd695c2013-03-13 17:23:00 -0700465 default:
466 ALOGE("Unknown camera device HAL version: %d", deviceVersion);
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700467 return INVALID_OPERATION;
Igor Murashkinacd695c2013-03-13 17:23:00 -0700468 }
469
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700470 status_t status = connectFinishUnsafe(client, client->getRemote());
471 if (status != OK) {
Igor Murashkinacd695c2013-03-13 17:23:00 -0700472 // this is probably not recoverable.. maybe the client can try again
Igor Murashkincba2c162013-03-20 15:56:31 -0700473 // OK: we can only get here if we were originally in PRESENT state
474 updateStatus(ICameraServiceListener::STATUS_PRESENT, cameraId);
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700475 return status;
Igor Murashkinacd695c2013-03-13 17:23:00 -0700476 }
477
478 mClient[cameraId] = client;
479 LOG1("CameraService::connect X (id %d, this pid is %d)", cameraId,
480 getpid());
Igor Murashkine6800ce2013-03-04 17:25:57 -0800481 }
Igor Murashkinacd695c2013-03-13 17:23:00 -0700482 // important: release the mutex here so the client can call back
483 // into the service from its destructor (can be at the end of the call)
Igor Murashkinbfc99152013-02-27 12:55:20 -0800484
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700485 device = client;
486 return OK;
Mathias Agopian65ab4712010-07-14 17:59:35 -0700487}
488
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700489status_t CameraService::connectFinishUnsafe(const sp<BasicClient>& client,
490 const sp<IBinder>& remoteCallback) {
491 status_t status = client->initialize(mModule);
492 if (status != OK) {
493 return status;
Igor Murashkine6800ce2013-03-04 17:25:57 -0800494 }
495
Igor Murashkine7ee7632013-06-11 18:10:18 -0700496 remoteCallback->linkToDeath(this);
Igor Murashkine6800ce2013-03-04 17:25:57 -0800497
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700498 return OK;
Igor Murashkine6800ce2013-03-04 17:25:57 -0800499}
500
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700501status_t CameraService::connectPro(
Igor Murashkin634a5152013-02-20 17:15:11 -0800502 const sp<IProCameraCallbacks>& cameraCb,
Igor Murashkinc073ba52013-02-26 14:32:34 -0800503 int cameraId,
504 const String16& clientPackageName,
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700505 int clientUid,
506 /*out*/
507 sp<IProCameraUser>& device)
Igor Murashkin634a5152013-02-20 17:15:11 -0800508{
Igor Murashkinbfc99152013-02-27 12:55:20 -0800509 String8 clientName8(clientPackageName);
Mathias Agopian65ab4712010-07-14 17:59:35 -0700510 int callingPid = getCallingPid();
Igor Murashkin634a5152013-02-20 17:15:11 -0800511
Igor Murashkine6800ce2013-03-04 17:25:57 -0800512 LOG1("CameraService::connectPro E (pid %d \"%s\", id %d)", callingPid,
513 clientName8.string(), cameraId);
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700514 status_t status = validateConnect(cameraId, /*inout*/clientUid);
515 if (status != OK) {
516 return status;
Igor Murashkin634a5152013-02-20 17:15:11 -0800517 }
518
Igor Murashkinacd695c2013-03-13 17:23:00 -0700519 sp<ProClient> client;
Igor Murashkine6800ce2013-03-04 17:25:57 -0800520 {
Igor Murashkinacd695c2013-03-13 17:23:00 -0700521 Mutex::Autolock lock(mServiceLock);
522 {
Igor Murashkine7ee7632013-06-11 18:10:18 -0700523 sp<BasicClient> client;
Igor Murashkinacd695c2013-03-13 17:23:00 -0700524 if (!canConnectUnsafe(cameraId, clientPackageName,
525 cameraCb->asBinder(),
526 /*out*/client)) {
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700527 return -EBUSY;
Igor Murashkinacd695c2013-03-13 17:23:00 -0700528 }
529 }
530
531 int facing = -1;
532 int deviceVersion = getDeviceVersion(cameraId, &facing);
533
534 switch(deviceVersion) {
535 case CAMERA_DEVICE_API_VERSION_1_0:
536 ALOGE("Camera id %d uses HALv1, doesn't support ProCamera",
537 cameraId);
Ruben Brunk17963d12013-08-19 15:21:19 -0700538 return -EOPNOTSUPP;
Igor Murashkinacd695c2013-03-13 17:23:00 -0700539 break;
540 case CAMERA_DEVICE_API_VERSION_2_0:
541 case CAMERA_DEVICE_API_VERSION_2_1:
Zhijun He47110052013-07-22 17:34:34 -0700542 case CAMERA_DEVICE_API_VERSION_3_0:
Igor Murashkinacd695c2013-03-13 17:23:00 -0700543 client = new ProCamera2Client(this, cameraCb, String16(),
544 cameraId, facing, callingPid, USE_CALLING_UID, getpid());
545 break;
546 case -1:
547 ALOGE("Invalid camera id %d", cameraId);
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700548 return BAD_VALUE;
Igor Murashkinacd695c2013-03-13 17:23:00 -0700549 default:
550 ALOGE("Unknown camera device HAL version: %d", deviceVersion);
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700551 return INVALID_OPERATION;
Igor Murashkine6800ce2013-03-04 17:25:57 -0800552 }
Igor Murashkinacd695c2013-03-13 17:23:00 -0700553
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700554 status_t status = connectFinishUnsafe(client, client->getRemote());
555 if (status != OK) {
556 return status;
Igor Murashkinacd695c2013-03-13 17:23:00 -0700557 }
558
559 mProClientList[cameraId].push(client);
560
561 LOG1("CameraService::connectPro X (id %d, this pid is %d)", cameraId,
562 getpid());
Igor Murashkine6800ce2013-03-04 17:25:57 -0800563 }
Igor Murashkinacd695c2013-03-13 17:23:00 -0700564 // important: release the mutex here so the client can call back
565 // into the service from its destructor (can be at the end of the call)
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700566 device = client;
567 return OK;
Igor Murashkinbfc99152013-02-27 12:55:20 -0800568}
Igor Murashkin634a5152013-02-20 17:15:11 -0800569
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700570status_t CameraService::connectDevice(
Igor Murashkine7ee7632013-06-11 18:10:18 -0700571 const sp<ICameraDeviceCallbacks>& cameraCb,
572 int cameraId,
573 const String16& clientPackageName,
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700574 int clientUid,
575 /*out*/
576 sp<ICameraDeviceUser>& device)
Igor Murashkine7ee7632013-06-11 18:10:18 -0700577{
Igor Murashkine7ee7632013-06-11 18:10:18 -0700578
579 String8 clientName8(clientPackageName);
580 int callingPid = getCallingPid();
581
582 LOG1("CameraService::connectDevice E (pid %d \"%s\", id %d)", callingPid,
583 clientName8.string(), cameraId);
584
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700585 status_t status = validateConnect(cameraId, /*inout*/clientUid);
586 if (status != OK) {
587 return status;
Igor Murashkine7ee7632013-06-11 18:10:18 -0700588 }
589
590 sp<CameraDeviceClient> client;
591 {
592 Mutex::Autolock lock(mServiceLock);
593 {
594 sp<BasicClient> client;
595 if (!canConnectUnsafe(cameraId, clientPackageName,
596 cameraCb->asBinder(),
597 /*out*/client)) {
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700598 return -EBUSY;
Igor Murashkine7ee7632013-06-11 18:10:18 -0700599 }
600 }
601
602 int facing = -1;
603 int deviceVersion = getDeviceVersion(cameraId, &facing);
604
605 // If there are other non-exclusive users of the camera,
606 // this will tear them down before we can reuse the camera
607 if (isValidCameraId(cameraId)) {
608 // transition from PRESENT -> NOT_AVAILABLE
609 updateStatus(ICameraServiceListener::STATUS_NOT_AVAILABLE,
610 cameraId);
611 }
612
613 switch(deviceVersion) {
614 case CAMERA_DEVICE_API_VERSION_1_0:
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700615 ALOGW("Camera using old HAL version: %d", deviceVersion);
Ruben Brunk17963d12013-08-19 15:21:19 -0700616 return -EOPNOTSUPP;
Igor Murashkine7ee7632013-06-11 18:10:18 -0700617 // TODO: don't allow 2.0 Only allow 2.1 and higher
618 case CAMERA_DEVICE_API_VERSION_2_0:
619 case CAMERA_DEVICE_API_VERSION_2_1:
620 case CAMERA_DEVICE_API_VERSION_3_0:
621 client = new CameraDeviceClient(this, cameraCb, String16(),
622 cameraId, facing, callingPid, USE_CALLING_UID, getpid());
623 break;
624 case -1:
625 ALOGE("Invalid camera id %d", cameraId);
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700626 return BAD_VALUE;
Igor Murashkine7ee7632013-06-11 18:10:18 -0700627 default:
628 ALOGE("Unknown camera device HAL version: %d", deviceVersion);
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700629 return INVALID_OPERATION;
Igor Murashkine7ee7632013-06-11 18:10:18 -0700630 }
631
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700632 status_t status = connectFinishUnsafe(client, client->getRemote());
633 if (status != OK) {
Igor Murashkine7ee7632013-06-11 18:10:18 -0700634 // this is probably not recoverable.. maybe the client can try again
635 // OK: we can only get here if we were originally in PRESENT state
636 updateStatus(ICameraServiceListener::STATUS_PRESENT, cameraId);
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700637 return status;
Igor Murashkine7ee7632013-06-11 18:10:18 -0700638 }
639
640 LOG1("CameraService::connectDevice X (id %d, this pid is %d)", cameraId,
641 getpid());
642
643 mClient[cameraId] = client;
644 }
645 // important: release the mutex here so the client can call back
646 // into the service from its destructor (can be at the end of the call)
647
Ruben Brunk0f61d8f2013-08-08 13:07:18 -0700648 device = client;
649 return OK;
Igor Murashkine7ee7632013-06-11 18:10:18 -0700650}
651
652
Igor Murashkinbfc99152013-02-27 12:55:20 -0800653status_t CameraService::addListener(
654 const sp<ICameraServiceListener>& listener) {
655 ALOGV("%s: Add listener %p", __FUNCTION__, listener.get());
Igor Murashkin634a5152013-02-20 17:15:11 -0800656
Igor Murashkinbfc99152013-02-27 12:55:20 -0800657 Mutex::Autolock lock(mServiceLock);
658
659 Vector<sp<ICameraServiceListener> >::iterator it, end;
660 for (it = mListenerList.begin(); it != mListenerList.end(); ++it) {
661 if ((*it)->asBinder() == listener->asBinder()) {
662 ALOGW("%s: Tried to add listener %p which was already subscribed",
663 __FUNCTION__, listener.get());
664 return ALREADY_EXISTS;
665 }
666 }
667
668 mListenerList.push_back(listener);
669
Igor Murashkincba2c162013-03-20 15:56:31 -0700670 /* Immediately signal current status to this listener only */
671 {
672 Mutex::Autolock m(mStatusMutex) ;
673 int numCams = getNumberOfCameras();
674 for (int i = 0; i < numCams; ++i) {
675 listener->onStatusChanged(mStatusList[i], i);
676 }
677 }
678
Igor Murashkinbfc99152013-02-27 12:55:20 -0800679 return OK;
680}
681status_t CameraService::removeListener(
682 const sp<ICameraServiceListener>& listener) {
683 ALOGV("%s: Remove listener %p", __FUNCTION__, listener.get());
684
685 Mutex::Autolock lock(mServiceLock);
686
687 Vector<sp<ICameraServiceListener> >::iterator it;
688 for (it = mListenerList.begin(); it != mListenerList.end(); ++it) {
689 if ((*it)->asBinder() == listener->asBinder()) {
690 mListenerList.erase(it);
691 return OK;
692 }
693 }
694
695 ALOGW("%s: Tried to remove a listener %p which was not subscribed",
696 __FUNCTION__, listener.get());
697
698 return BAD_VALUE;
Igor Murashkin634a5152013-02-20 17:15:11 -0800699}
700
701void CameraService::removeClientByRemote(const wp<IBinder>& remoteBinder) {
702 int callingPid = getCallingPid();
703 LOG1("CameraService::removeClientByRemote E (pid %d)", callingPid);
Mathias Agopian65ab4712010-07-14 17:59:35 -0700704
Igor Murashkinecf17e82012-10-02 16:05:11 -0700705 // Declare this before the lock to make absolutely sure the
706 // destructor won't be called with the lock held.
707 Mutex::Autolock lock(mServiceLock);
Mathias Agopian65ab4712010-07-14 17:59:35 -0700708
Igor Murashkinecf17e82012-10-02 16:05:11 -0700709 int outIndex;
Igor Murashkine7ee7632013-06-11 18:10:18 -0700710 sp<BasicClient> client = findClientUnsafe(remoteBinder, outIndex);
Igor Murashkinecf17e82012-10-02 16:05:11 -0700711
712 if (client != 0) {
713 // Found our camera, clear and leave.
714 LOG1("removeClient: clear camera %d", outIndex);
715 mClient[outIndex].clear();
716
Igor Murashkine7ee7632013-06-11 18:10:18 -0700717 client->getRemote()->unlinkToDeath(this);
Igor Murashkin634a5152013-02-20 17:15:11 -0800718 } else {
719
720 sp<ProClient> clientPro = findProClientUnsafe(remoteBinder);
721
722 if (clientPro != NULL) {
723 // Found our camera, clear and leave.
724 LOG1("removeClient: clear pro %p", clientPro.get());
725
726 clientPro->getRemoteCallback()->asBinder()->unlinkToDeath(this);
727 }
Igor Murashkinecf17e82012-10-02 16:05:11 -0700728 }
729
Igor Murashkin634a5152013-02-20 17:15:11 -0800730 LOG1("CameraService::removeClientByRemote X (pid %d)", callingPid);
731}
732
733sp<CameraService::ProClient> CameraService::findProClientUnsafe(
734 const wp<IBinder>& cameraCallbacksRemote)
735{
736 sp<ProClient> clientPro;
737
738 for (int i = 0; i < mNumberOfCameras; ++i) {
739 Vector<size_t> removeIdx;
740
741 for (size_t j = 0; j < mProClientList[i].size(); ++j) {
742 wp<ProClient> cl = mProClientList[i][j];
743
744 sp<ProClient> clStrong = cl.promote();
745 if (clStrong != NULL && clStrong->getRemote() == cameraCallbacksRemote) {
746 clientPro = clStrong;
747 break;
748 } else if (clStrong == NULL) {
749 // mark to clean up dead ptr
750 removeIdx.push(j);
751 }
752 }
753
754 // remove stale ptrs (in reverse so the indices dont change)
755 for (ssize_t j = (ssize_t)removeIdx.size() - 1; j >= 0; --j) {
756 mProClientList[i].removeAt(removeIdx[j]);
757 }
758
759 }
760
761 return clientPro;
Igor Murashkinecf17e82012-10-02 16:05:11 -0700762}
763
Igor Murashkine7ee7632013-06-11 18:10:18 -0700764sp<CameraService::BasicClient> CameraService::findClientUnsafe(
Igor Murashkin294d0ec2012-10-05 10:44:57 -0700765 const wp<IBinder>& cameraClient, int& outIndex) {
Igor Murashkine7ee7632013-06-11 18:10:18 -0700766 sp<BasicClient> client;
Igor Murashkinecf17e82012-10-02 16:05:11 -0700767
768 for (int i = 0; i < mNumberOfCameras; i++) {
Mathias Agopian65ab4712010-07-14 17:59:35 -0700769
770 // This happens when we have already disconnected (or this is
771 // just another unused camera).
772 if (mClient[i] == 0) continue;
773
774 // Promote mClient. It can fail if we are called from this path:
Igor Murashkin634a5152013-02-20 17:15:11 -0800775 // Client::~Client() -> disconnect() -> removeClientByRemote().
Mathias Agopian65ab4712010-07-14 17:59:35 -0700776 client = mClient[i].promote();
777
Igor Murashkinecf17e82012-10-02 16:05:11 -0700778 // Clean up stale client entry
779 if (client == NULL) {
Mathias Agopian65ab4712010-07-14 17:59:35 -0700780 mClient[i].clear();
781 continue;
782 }
783
Igor Murashkine7ee7632013-06-11 18:10:18 -0700784 if (cameraClient == client->getRemote()) {
Igor Murashkinecf17e82012-10-02 16:05:11 -0700785 // Found our camera
786 outIndex = i;
787 return client;
Mathias Agopian65ab4712010-07-14 17:59:35 -0700788 }
789 }
790
Igor Murashkinecf17e82012-10-02 16:05:11 -0700791 outIndex = -1;
792 return NULL;
Mathias Agopian65ab4712010-07-14 17:59:35 -0700793}
794
Igor Murashkine7ee7632013-06-11 18:10:18 -0700795CameraService::BasicClient* CameraService::getClientByIdUnsafe(int cameraId) {
Mathias Agopian65ab4712010-07-14 17:59:35 -0700796 if (cameraId < 0 || cameraId >= mNumberOfCameras) return NULL;
Keun young Parkd8973a72012-03-28 14:13:09 -0700797 return mClient[cameraId].unsafe_get();
798}
799
800Mutex* CameraService::getClientLockById(int cameraId) {
801 if (cameraId < 0 || cameraId >= mNumberOfCameras) return NULL;
802 return &mClientLock[cameraId];
Mathias Agopian65ab4712010-07-14 17:59:35 -0700803}
804
Igor Murashkin634a5152013-02-20 17:15:11 -0800805sp<CameraService::BasicClient> CameraService::getClientByRemote(
Igor Murashkin294d0ec2012-10-05 10:44:57 -0700806 const wp<IBinder>& cameraClient) {
Igor Murashkinecf17e82012-10-02 16:05:11 -0700807
808 // Declare this before the lock to make absolutely sure the
809 // destructor won't be called with the lock held.
Igor Murashkin634a5152013-02-20 17:15:11 -0800810 sp<BasicClient> client;
Igor Murashkinecf17e82012-10-02 16:05:11 -0700811
812 Mutex::Autolock lock(mServiceLock);
813
814 int outIndex;
815 client = findClientUnsafe(cameraClient, outIndex);
816
817 return client;
818}
819
Mathias Agopian65ab4712010-07-14 17:59:35 -0700820status_t CameraService::onTransact(
821 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) {
822 // Permission checks
823 switch (code) {
824 case BnCameraService::CONNECT:
Igor Murashkin634a5152013-02-20 17:15:11 -0800825 case BnCameraService::CONNECT_PRO:
Mathias Agopian65ab4712010-07-14 17:59:35 -0700826 const int pid = getCallingPid();
827 const int self_pid = getpid();
828 if (pid != self_pid) {
829 // we're called from a different process, do the real check
830 if (!checkCallingPermission(
831 String16("android.permission.CAMERA"))) {
832 const int uid = getCallingUid();
Steve Block29357bc2012-01-06 19:20:56 +0000833 ALOGE("Permission Denial: "
Mathias Agopian65ab4712010-07-14 17:59:35 -0700834 "can't use the camera pid=%d, uid=%d", pid, uid);
835 return PERMISSION_DENIED;
836 }
837 }
838 break;
839 }
840
841 return BnCameraService::onTransact(code, data, reply, flags);
842}
843
844// The reason we need this busy bit is a new CameraService::connect() request
845// may come in while the previous Client's destructor has not been run or is
846// still running. If the last strong reference of the previous Client is gone
847// but the destructor has not been finished, we should not allow the new Client
848// to be created because we need to wait for the previous Client to tear down
849// the hardware first.
850void CameraService::setCameraBusy(int cameraId) {
851 android_atomic_write(1, &mBusy[cameraId]);
Igor Murashkinecf17e82012-10-02 16:05:11 -0700852
853 ALOGV("setCameraBusy cameraId=%d", cameraId);
Mathias Agopian65ab4712010-07-14 17:59:35 -0700854}
855
856void CameraService::setCameraFree(int cameraId) {
857 android_atomic_write(0, &mBusy[cameraId]);
Igor Murashkinecf17e82012-10-02 16:05:11 -0700858
859 ALOGV("setCameraFree cameraId=%d", cameraId);
Mathias Agopian65ab4712010-07-14 17:59:35 -0700860}
861
862// We share the media players for shutter and recording sound for all clients.
863// A reference count is kept to determine when we will actually release the
864// media players.
865
Chih-Chung Changff4f55c2011-10-17 19:03:12 +0800866MediaPlayer* CameraService::newMediaPlayer(const char *file) {
Mathias Agopian65ab4712010-07-14 17:59:35 -0700867 MediaPlayer* mp = new MediaPlayer();
868 if (mp->setDataSource(file, NULL) == NO_ERROR) {
Eino-Ville Talvala60a78ac2012-01-05 15:34:53 -0800869 mp->setAudioStreamType(AUDIO_STREAM_ENFORCED_AUDIBLE);
Mathias Agopian65ab4712010-07-14 17:59:35 -0700870 mp->prepare();
871 } else {
Steve Block29357bc2012-01-06 19:20:56 +0000872 ALOGE("Failed to load CameraService sounds: %s", file);
Mathias Agopian65ab4712010-07-14 17:59:35 -0700873 return NULL;
874 }
875 return mp;
876}
877
878void CameraService::loadSound() {
879 Mutex::Autolock lock(mSoundLock);
880 LOG1("CameraService::loadSound ref=%d", mSoundRef);
881 if (mSoundRef++) return;
882
883 mSoundPlayer[SOUND_SHUTTER] = newMediaPlayer("/system/media/audio/ui/camera_click.ogg");
884 mSoundPlayer[SOUND_RECORDING] = newMediaPlayer("/system/media/audio/ui/VideoRecord.ogg");
885}
886
887void CameraService::releaseSound() {
888 Mutex::Autolock lock(mSoundLock);
889 LOG1("CameraService::releaseSound ref=%d", mSoundRef);
890 if (--mSoundRef) return;
891
892 for (int i = 0; i < NUM_SOUNDS; i++) {
893 if (mSoundPlayer[i] != 0) {
894 mSoundPlayer[i]->disconnect();
895 mSoundPlayer[i].clear();
896 }
897 }
898}
899
900void CameraService::playSound(sound_kind kind) {
901 LOG1("playSound(%d)", kind);
902 Mutex::Autolock lock(mSoundLock);
903 sp<MediaPlayer> player = mSoundPlayer[kind];
904 if (player != 0) {
Chih-Chung Chang8888a752011-10-20 10:47:26 +0800905 player->seekTo(0);
906 player->start();
Mathias Agopian65ab4712010-07-14 17:59:35 -0700907 }
908}
909
910// ----------------------------------------------------------------------------
911
912CameraService::Client::Client(const sp<CameraService>& cameraService,
Wu-cheng Lib7a67942010-08-17 15:45:37 -0700913 const sp<ICameraClient>& cameraClient,
Eino-Ville Talvalaceb388d2013-02-19 10:40:14 -0800914 const String16& clientPackageName,
915 int cameraId, int cameraFacing,
916 int clientPid, uid_t clientUid,
917 int servicePid) :
Igor Murashkin634a5152013-02-20 17:15:11 -0800918 CameraService::BasicClient(cameraService, cameraClient->asBinder(),
Eino-Ville Talvalaceb388d2013-02-19 10:40:14 -0800919 clientPackageName,
920 cameraId, cameraFacing,
921 clientPid, clientUid,
922 servicePid)
Igor Murashkin634a5152013-02-20 17:15:11 -0800923{
Mathias Agopian65ab4712010-07-14 17:59:35 -0700924 int callingPid = getCallingPid();
Wu-cheng Li2fd24402012-02-23 19:01:00 -0800925 LOG1("Client::Client E (pid %d, id %d)", callingPid, cameraId);
Mathias Agopian65ab4712010-07-14 17:59:35 -0700926
Igor Murashkin44cfcf02013-03-01 16:22:28 -0800927 mRemoteCallback = cameraClient;
Mathias Agopian65ab4712010-07-14 17:59:35 -0700928
Mathias Agopian65ab4712010-07-14 17:59:35 -0700929 cameraService->setCameraBusy(cameraId);
930 cameraService->loadSound();
Eino-Ville Talvalaceb388d2013-02-19 10:40:14 -0800931
Wu-cheng Li2fd24402012-02-23 19:01:00 -0800932 LOG1("Client::Client X (pid %d, id %d)", callingPid, cameraId);
Mathias Agopian65ab4712010-07-14 17:59:35 -0700933}
934
Mathias Agopian65ab4712010-07-14 17:59:35 -0700935// tear down the client
936CameraService::Client::~Client() {
Eino-Ville Talvalad09801b2013-04-23 15:16:57 -0700937 ALOGV("~Client");
Igor Murashkin634a5152013-02-20 17:15:11 -0800938 mDestructionStarted = true;
939
Eino-Ville Talvalaf69c70d2012-05-20 15:59:14 -0700940 mCameraService->releaseSound();
Igor Murashkin036bc3e2012-10-08 15:09:46 -0700941 // unconditionally disconnect. function is idempotent
942 Client::disconnect();
Mathias Agopian65ab4712010-07-14 17:59:35 -0700943}
944
Igor Murashkin634a5152013-02-20 17:15:11 -0800945CameraService::BasicClient::BasicClient(const sp<CameraService>& cameraService,
Eino-Ville Talvalaceb388d2013-02-19 10:40:14 -0800946 const sp<IBinder>& remoteCallback,
947 const String16& clientPackageName,
948 int cameraId, int cameraFacing,
949 int clientPid, uid_t clientUid,
950 int servicePid):
951 mClientPackageName(clientPackageName)
Igor Murashkin634a5152013-02-20 17:15:11 -0800952{
953 mCameraService = cameraService;
Igor Murashkin44cfcf02013-03-01 16:22:28 -0800954 mRemoteBinder = remoteCallback;
Igor Murashkin634a5152013-02-20 17:15:11 -0800955 mCameraId = cameraId;
956 mCameraFacing = cameraFacing;
957 mClientPid = clientPid;
Eino-Ville Talvalaceb388d2013-02-19 10:40:14 -0800958 mClientUid = clientUid;
Igor Murashkin634a5152013-02-20 17:15:11 -0800959 mServicePid = servicePid;
Eino-Ville Talvalaceb388d2013-02-19 10:40:14 -0800960 mOpsActive = false;
Igor Murashkin634a5152013-02-20 17:15:11 -0800961 mDestructionStarted = false;
962}
963
964CameraService::BasicClient::~BasicClient() {
Eino-Ville Talvalad09801b2013-04-23 15:16:57 -0700965 ALOGV("~BasicClient");
Igor Murashkin634a5152013-02-20 17:15:11 -0800966 mDestructionStarted = true;
967}
968
969void CameraService::BasicClient::disconnect() {
Eino-Ville Talvalad09801b2013-04-23 15:16:57 -0700970 ALOGV("BasicClient::disconnect");
Igor Murashkin44cfcf02013-03-01 16:22:28 -0800971 mCameraService->removeClientByRemote(mRemoteBinder);
Igor Murashkincba2c162013-03-20 15:56:31 -0700972 // client shouldn't be able to call into us anymore
973 mClientPid = 0;
Igor Murashkin634a5152013-02-20 17:15:11 -0800974}
975
Eino-Ville Talvalaceb388d2013-02-19 10:40:14 -0800976status_t CameraService::BasicClient::startCameraOps() {
977 int32_t res;
978
979 mOpsCallback = new OpsCallback(this);
980
Igor Murashkine6800ce2013-03-04 17:25:57 -0800981 {
982 ALOGV("%s: Start camera ops, package name = %s, client UID = %d",
983 __FUNCTION__, String8(mClientPackageName).string(), mClientUid);
984 }
985
Eino-Ville Talvalaceb388d2013-02-19 10:40:14 -0800986 mAppOpsManager.startWatchingMode(AppOpsManager::OP_CAMERA,
987 mClientPackageName, mOpsCallback);
988 res = mAppOpsManager.startOp(AppOpsManager::OP_CAMERA,
989 mClientUid, mClientPackageName);
990
991 if (res != AppOpsManager::MODE_ALLOWED) {
992 ALOGI("Camera %d: Access for \"%s\" has been revoked",
993 mCameraId, String8(mClientPackageName).string());
994 return PERMISSION_DENIED;
995 }
996 mOpsActive = true;
997 return OK;
998}
999
1000status_t CameraService::BasicClient::finishCameraOps() {
1001 if (mOpsActive) {
1002 mAppOpsManager.finishOp(AppOpsManager::OP_CAMERA, mClientUid,
1003 mClientPackageName);
1004 mOpsActive = false;
1005 }
1006 mAppOpsManager.stopWatchingMode(mOpsCallback);
1007 mOpsCallback.clear();
1008
1009 return OK;
1010}
1011
1012void CameraService::BasicClient::opChanged(int32_t op, const String16& packageName) {
1013 String8 name(packageName);
1014 String8 myName(mClientPackageName);
1015
1016 if (op != AppOpsManager::OP_CAMERA) {
1017 ALOGW("Unexpected app ops notification received: %d", op);
1018 return;
1019 }
1020
1021 int32_t res;
1022 res = mAppOpsManager.checkOp(AppOpsManager::OP_CAMERA,
1023 mClientUid, mClientPackageName);
1024 ALOGV("checkOp returns: %d, %s ", res,
1025 res == AppOpsManager::MODE_ALLOWED ? "ALLOWED" :
1026 res == AppOpsManager::MODE_IGNORED ? "IGNORED" :
1027 res == AppOpsManager::MODE_ERRORED ? "ERRORED" :
1028 "UNKNOWN");
1029
1030 if (res != AppOpsManager::MODE_ALLOWED) {
1031 ALOGI("Camera %d: Access for \"%s\" revoked", mCameraId,
1032 myName.string());
1033 // Reset the client PID to allow server-initiated disconnect,
1034 // and to prevent further calls by client.
1035 mClientPid = getCallingPid();
1036 notifyError();
1037 disconnect();
1038 }
1039}
1040
Mathias Agopian65ab4712010-07-14 17:59:35 -07001041// ----------------------------------------------------------------------------
1042
Keun young Parkd8973a72012-03-28 14:13:09 -07001043Mutex* CameraService::Client::getClientLockFromCookie(void* user) {
1044 return gCameraService->getClientLockById((int) user);
1045}
1046
1047// Provide client pointer for callbacks. Client lock returned from getClientLockFromCookie should
1048// be acquired for this to be safe
1049CameraService::Client* CameraService::Client::getClientFromCookie(void* user) {
Igor Murashkine7ee7632013-06-11 18:10:18 -07001050 BasicClient *basicClient = gCameraService->getClientByIdUnsafe((int) user);
1051 // OK: only CameraClient calls this, and they already cast anyway.
1052 Client* client = static_cast<Client*>(basicClient);
Mathias Agopian65ab4712010-07-14 17:59:35 -07001053
1054 // This could happen if the Client is in the process of shutting down (the
1055 // last strong reference is gone, but the destructor hasn't finished
1056 // stopping the hardware).
Keun young Parkd8973a72012-03-28 14:13:09 -07001057 if (client == NULL) return NULL;
1058
1059 // destruction already started, so should not be accessed
1060 if (client->mDestructionStarted) return NULL;
Mathias Agopian65ab4712010-07-14 17:59:35 -07001061
Mathias Agopian65ab4712010-07-14 17:59:35 -07001062 return client;
1063}
1064
Eino-Ville Talvalaceb388d2013-02-19 10:40:14 -08001065void CameraService::Client::notifyError() {
Igor Murashkin44cfcf02013-03-01 16:22:28 -08001066 mRemoteCallback->notifyCallback(CAMERA_MSG_ERROR, CAMERA_ERROR_RELEASED, 0);
Eino-Ville Talvalaceb388d2013-02-19 10:40:14 -08001067}
1068
Igor Murashkin036bc3e2012-10-08 15:09:46 -07001069// NOTE: function is idempotent
Eino-Ville Talvala5e08d602012-05-16 14:59:25 -07001070void CameraService::Client::disconnect() {
Eino-Ville Talvalad09801b2013-04-23 15:16:57 -07001071 ALOGV("Client::disconnect");
Igor Murashkin634a5152013-02-20 17:15:11 -08001072 BasicClient::disconnect();
Eino-Ville Talvala5e08d602012-05-16 14:59:25 -07001073 mCameraService->setCameraFree(mCameraId);
Igor Murashkin93747b92013-05-01 15:42:20 -07001074
1075 StatusVector rejectSourceStates;
1076 rejectSourceStates.push_back(ICameraServiceListener::STATUS_NOT_PRESENT);
1077 rejectSourceStates.push_back(ICameraServiceListener::STATUS_ENUMERATING);
1078
1079 // Transition to PRESENT if the camera is not in either of above 2 states
Igor Murashkincba2c162013-03-20 15:56:31 -07001080 mCameraService->updateStatus(ICameraServiceListener::STATUS_PRESENT,
Igor Murashkin93747b92013-05-01 15:42:20 -07001081 mCameraId,
1082 &rejectSourceStates);
Wu-cheng Lie09591e2010-10-14 20:17:44 +08001083}
1084
Eino-Ville Talvalaceb388d2013-02-19 10:40:14 -08001085CameraService::Client::OpsCallback::OpsCallback(wp<BasicClient> client):
1086 mClient(client) {
1087}
1088
1089void CameraService::Client::OpsCallback::opChanged(int32_t op,
1090 const String16& packageName) {
1091 sp<BasicClient> client = mClient.promote();
1092 if (client != NULL) {
1093 client->opChanged(op, packageName);
1094 }
1095}
1096
Mathias Agopian65ab4712010-07-14 17:59:35 -07001097// ----------------------------------------------------------------------------
Igor Murashkin634a5152013-02-20 17:15:11 -08001098// IProCamera
1099// ----------------------------------------------------------------------------
1100
1101CameraService::ProClient::ProClient(const sp<CameraService>& cameraService,
Eino-Ville Talvalaceb388d2013-02-19 10:40:14 -08001102 const sp<IProCameraCallbacks>& remoteCallback,
1103 const String16& clientPackageName,
1104 int cameraId,
1105 int cameraFacing,
1106 int clientPid,
1107 uid_t clientUid,
1108 int servicePid)
1109 : CameraService::BasicClient(cameraService, remoteCallback->asBinder(),
1110 clientPackageName, cameraId, cameraFacing,
1111 clientPid, clientUid, servicePid)
Igor Murashkin634a5152013-02-20 17:15:11 -08001112{
1113 mRemoteCallback = remoteCallback;
1114}
1115
1116CameraService::ProClient::~ProClient() {
Igor Murashkin634a5152013-02-20 17:15:11 -08001117}
1118
Eino-Ville Talvalaceb388d2013-02-19 10:40:14 -08001119void CameraService::ProClient::notifyError() {
Igor Murashkine6800ce2013-03-04 17:25:57 -08001120 mRemoteCallback->notifyCallback(CAMERA_MSG_ERROR, CAMERA_ERROR_RELEASED, 0);
Eino-Ville Talvalaceb388d2013-02-19 10:40:14 -08001121}
1122
Igor Murashkin634a5152013-02-20 17:15:11 -08001123// ----------------------------------------------------------------------------
Mathias Agopian65ab4712010-07-14 17:59:35 -07001124
1125static const int kDumpLockRetries = 50;
1126static const int kDumpLockSleep = 60000;
1127
1128static bool tryLock(Mutex& mutex)
1129{
1130 bool locked = false;
1131 for (int i = 0; i < kDumpLockRetries; ++i) {
1132 if (mutex.tryLock() == NO_ERROR) {
1133 locked = true;
1134 break;
1135 }
1136 usleep(kDumpLockSleep);
1137 }
1138 return locked;
1139}
1140
1141status_t CameraService::dump(int fd, const Vector<String16>& args) {
Mathias Agopian65ab4712010-07-14 17:59:35 -07001142 String8 result;
1143 if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
Eino-Ville Talvala611f6192012-05-31 12:28:23 -07001144 result.appendFormat("Permission Denial: "
Mathias Agopian65ab4712010-07-14 17:59:35 -07001145 "can't dump CameraService from pid=%d, uid=%d\n",
1146 getCallingPid(),
1147 getCallingUid());
Mathias Agopian65ab4712010-07-14 17:59:35 -07001148 write(fd, result.string(), result.size());
1149 } else {
1150 bool locked = tryLock(mServiceLock);
1151 // failed to lock - CameraService is probably deadlocked
1152 if (!locked) {
Eino-Ville Talvala611f6192012-05-31 12:28:23 -07001153 result.append("CameraService may be deadlocked\n");
Eino-Ville Talvalaf5926132012-07-17 13:54:20 -07001154 write(fd, result.string(), result.size());
Mathias Agopian65ab4712010-07-14 17:59:35 -07001155 }
1156
1157 bool hasClient = false;
Eino-Ville Talvalaf5926132012-07-17 13:54:20 -07001158 if (!mModule) {
1159 result = String8::format("No camera module available!\n");
1160 write(fd, result.string(), result.size());
1161 return NO_ERROR;
1162 }
1163
1164 result = String8::format("Camera module HAL API version: 0x%x\n",
1165 mModule->common.hal_api_version);
1166 result.appendFormat("Camera module API version: 0x%x\n",
1167 mModule->common.module_api_version);
1168 result.appendFormat("Camera module name: %s\n",
1169 mModule->common.name);
1170 result.appendFormat("Camera module author: %s\n",
1171 mModule->common.author);
1172 result.appendFormat("Number of camera devices: %d\n\n", mNumberOfCameras);
1173 write(fd, result.string(), result.size());
Mathias Agopian65ab4712010-07-14 17:59:35 -07001174 for (int i = 0; i < mNumberOfCameras; i++) {
Eino-Ville Talvalaf5926132012-07-17 13:54:20 -07001175 result = String8::format("Camera %d static information:\n", i);
1176 camera_info info;
1177
1178 status_t rc = mModule->get_camera_info(i, &info);
1179 if (rc != OK) {
1180 result.appendFormat(" Error reading static information!\n");
1181 write(fd, result.string(), result.size());
1182 } else {
1183 result.appendFormat(" Facing: %s\n",
1184 info.facing == CAMERA_FACING_BACK ? "BACK" : "FRONT");
1185 result.appendFormat(" Orientation: %d\n", info.orientation);
1186 int deviceVersion;
1187 if (mModule->common.module_api_version <
1188 CAMERA_MODULE_API_VERSION_2_0) {
1189 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0;
1190 } else {
1191 deviceVersion = info.device_version;
1192 }
1193 result.appendFormat(" Device version: 0x%x\n", deviceVersion);
1194 if (deviceVersion >= CAMERA_DEVICE_API_VERSION_2_0) {
1195 result.appendFormat(" Device static metadata:\n");
1196 write(fd, result.string(), result.size());
Eino-Ville Talvala428b77a2012-07-30 09:55:30 -07001197 dump_indented_camera_metadata(info.static_camera_characteristics,
1198 fd, 2, 4);
Eino-Ville Talvalaf5926132012-07-17 13:54:20 -07001199 } else {
1200 write(fd, result.string(), result.size());
1201 }
1202 }
1203
Igor Murashkine7ee7632013-06-11 18:10:18 -07001204 sp<BasicClient> client = mClient[i].promote();
Eino-Ville Talvalaf5926132012-07-17 13:54:20 -07001205 if (client == 0) {
1206 result = String8::format(" Device is closed, no client instance\n");
1207 write(fd, result.string(), result.size());
1208 continue;
1209 }
Mathias Agopian65ab4712010-07-14 17:59:35 -07001210 hasClient = true;
Eino-Ville Talvalaf5926132012-07-17 13:54:20 -07001211 result = String8::format(" Device is open. Client instance dump:\n");
1212 write(fd, result.string(), result.size());
Eino-Ville Talvala5e08d602012-05-16 14:59:25 -07001213 client->dump(fd, args);
Mathias Agopian65ab4712010-07-14 17:59:35 -07001214 }
1215 if (!hasClient) {
Eino-Ville Talvalaf5926132012-07-17 13:54:20 -07001216 result = String8::format("\nNo active camera clients yet.\n");
1217 write(fd, result.string(), result.size());
Mathias Agopian65ab4712010-07-14 17:59:35 -07001218 }
1219
1220 if (locked) mServiceLock.unlock();
1221
1222 // change logging level
1223 int n = args.size();
1224 for (int i = 0; i + 1 < n; i++) {
Eino-Ville Talvala611f6192012-05-31 12:28:23 -07001225 String16 verboseOption("-v");
1226 if (args[i] == verboseOption) {
Mathias Agopian65ab4712010-07-14 17:59:35 -07001227 String8 levelStr(args[i+1]);
1228 int level = atoi(levelStr.string());
Eino-Ville Talvalaf5926132012-07-17 13:54:20 -07001229 result = String8::format("\nSetting log level to %d.\n", level);
Mathias Agopian65ab4712010-07-14 17:59:35 -07001230 setLogLevel(level);
Eino-Ville Talvalaf5926132012-07-17 13:54:20 -07001231 write(fd, result.string(), result.size());
Mathias Agopian65ab4712010-07-14 17:59:35 -07001232 }
1233 }
Eino-Ville Talvalaf5926132012-07-17 13:54:20 -07001234
Mathias Agopian65ab4712010-07-14 17:59:35 -07001235 }
1236 return NO_ERROR;
1237}
1238
Igor Murashkinecf17e82012-10-02 16:05:11 -07001239/*virtual*/void CameraService::binderDied(
1240 const wp<IBinder> &who) {
1241
Igor Murashkin294d0ec2012-10-05 10:44:57 -07001242 /**
1243 * While tempting to promote the wp<IBinder> into a sp,
1244 * it's actually not supported by the binder driver
1245 */
1246
Igor Murashkinecf17e82012-10-02 16:05:11 -07001247 ALOGV("java clients' binder died");
1248
Igor Murashkin634a5152013-02-20 17:15:11 -08001249 sp<BasicClient> cameraClient = getClientByRemote(who);
Igor Murashkinecf17e82012-10-02 16:05:11 -07001250
Igor Murashkin294d0ec2012-10-05 10:44:57 -07001251 if (cameraClient == 0) {
Igor Murashkinecf17e82012-10-02 16:05:11 -07001252 ALOGV("java clients' binder death already cleaned up (normal case)");
1253 return;
1254 }
1255
Igor Murashkinecf17e82012-10-02 16:05:11 -07001256 ALOGW("Disconnecting camera client %p since the binder for it "
1257 "died (this pid %d)", cameraClient.get(), getCallingPid());
1258
1259 cameraClient->disconnect();
1260
1261}
1262
Igor Murashkinbfc99152013-02-27 12:55:20 -08001263void CameraService::updateStatus(ICameraServiceListener::Status status,
Igor Murashkin93747b92013-05-01 15:42:20 -07001264 int32_t cameraId,
1265 const StatusVector *rejectSourceStates) {
Igor Murashkinbfc99152013-02-27 12:55:20 -08001266 // do not lock mServiceLock here or can get into a deadlock from
1267 // connect() -> ProClient::disconnect -> updateStatus
1268 Mutex::Autolock lock(mStatusMutex);
Igor Murashkinbfc99152013-02-27 12:55:20 -08001269
1270 ICameraServiceListener::Status oldStatus = mStatusList[cameraId];
1271
1272 mStatusList[cameraId] = status;
1273
1274 if (oldStatus != status) {
1275 ALOGV("%s: Status has changed for camera ID %d from 0x%x to 0x%x",
1276 __FUNCTION__, cameraId, (uint32_t)oldStatus, (uint32_t)status);
1277
Igor Murashkincba2c162013-03-20 15:56:31 -07001278 if (oldStatus == ICameraServiceListener::STATUS_NOT_PRESENT &&
1279 (status != ICameraServiceListener::STATUS_PRESENT &&
1280 status != ICameraServiceListener::STATUS_ENUMERATING)) {
1281
1282 ALOGW("%s: From NOT_PRESENT can only transition into PRESENT"
1283 " or ENUMERATING", __FUNCTION__);
1284 mStatusList[cameraId] = oldStatus;
1285 return;
1286 }
1287
Igor Murashkin93747b92013-05-01 15:42:20 -07001288 if (rejectSourceStates != NULL) {
1289 const StatusVector &rejectList = *rejectSourceStates;
1290 StatusVector::const_iterator it = rejectList.begin();
1291
1292 /**
1293 * Sometimes we want to conditionally do a transition.
1294 * For example if a client disconnects, we want to go to PRESENT
1295 * only if we weren't already in NOT_PRESENT or ENUMERATING.
1296 */
1297 for (; it != rejectList.end(); ++it) {
1298 if (oldStatus == *it) {
1299 ALOGV("%s: Rejecting status transition for Camera ID %d, "
1300 " since the source state was was in one of the bad "
1301 " states.", __FUNCTION__, cameraId);
1302 mStatusList[cameraId] = oldStatus;
1303 return;
1304 }
1305 }
1306 }
1307
Igor Murashkinbfc99152013-02-27 12:55:20 -08001308 /**
1309 * ProClients lose their exclusive lock.
1310 * - Done before the CameraClient can initialize the HAL device,
1311 * since we want to be able to close it before they get to initialize
1312 */
1313 if (status == ICameraServiceListener::STATUS_NOT_AVAILABLE) {
1314 Vector<wp<ProClient> > proClients(mProClientList[cameraId]);
1315 Vector<wp<ProClient> >::const_iterator it;
1316
1317 for (it = proClients.begin(); it != proClients.end(); ++it) {
1318 sp<ProClient> proCl = it->promote();
1319 if (proCl.get() != NULL) {
1320 proCl->onExclusiveLockStolen();
1321 }
1322 }
1323 }
1324
1325 Vector<sp<ICameraServiceListener> >::const_iterator it;
1326 for (it = mListenerList.begin(); it != mListenerList.end(); ++it) {
1327 (*it)->onStatusChanged(status, cameraId);
1328 }
1329 }
1330}
1331
Igor Murashkincba2c162013-03-20 15:56:31 -07001332ICameraServiceListener::Status CameraService::getStatus(int cameraId) const {
1333 if (cameraId < 0 || cameraId >= MAX_CAMERAS) {
1334 ALOGE("%s: Invalid camera ID %d", __FUNCTION__, cameraId);
1335 return ICameraServiceListener::STATUS_UNKNOWN;
1336 }
1337
1338 Mutex::Autolock al(mStatusMutex);
1339 return mStatusList[cameraId];
1340}
1341
Mathias Agopian65ab4712010-07-14 17:59:35 -07001342}; // namespace android