1 /*
2 * Copyright (C) 2016 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_NDEBUG 0
18 #define LOG_TAG "ACameraCaptureSession"
19
20 #include "ACameraCaptureSession.h"
21
22 using namespace android;
23
~ACameraCaptureSession()24 ACameraCaptureSession::~ACameraCaptureSession() {
25 ALOGV("~ACameraCaptureSession: %p notify device end of life", this);
26 sp<CameraDevice> dev = getDeviceSp();
27 if (dev != nullptr && !dev->isClosed()) {
28 dev->lockDeviceForSessionOps();
29 {
30 Mutex::Autolock _l(mSessionLock);
31 dev->notifySessionEndOfLifeLocked(this);
32 }
33 dev->unlockDevice();
34 }
35 // Fire onClosed callback
36 (*mUserSessionCallback.onClosed)(mUserSessionCallback.context, this);
37 ALOGV("~ACameraCaptureSession: %p is deleted", this);
38 }
39
40 void
closeByApp()41 ACameraCaptureSession::closeByApp() {
42 {
43 Mutex::Autolock _l(mSessionLock);
44 if (mClosedByApp) {
45 // Do not close twice
46 return;
47 }
48 mClosedByApp = true;
49 }
50
51 sp<CameraDevice> dev = getDeviceSp();
52 if (dev != nullptr) {
53 dev->lockDeviceForSessionOps();
54 }
55
56 {
57 Mutex::Autolock _l(mSessionLock);
58
59 if (!mIsClosed && dev != nullptr) {
60 camera_status_t ret = dev->stopRepeatingLocked();
61 if (ret != ACAMERA_OK) {
62 ALOGE("Stop repeating request failed while closing session %p", this);
63 }
64 }
65 mIsClosed = true;
66 }
67
68 if (dev != nullptr) {
69 dev->unlockDevice();
70 }
71 this->decStrong((void*) ACameraDevice_createCaptureSession);
72 }
73
74 camera_status_t
stopRepeating()75 ACameraCaptureSession::stopRepeating() {
76 sp<CameraDevice> dev = getDeviceSp();
77 if (dev == nullptr) {
78 ALOGE("Error: Device associated with session %p has been closed!", this);
79 return ACAMERA_ERROR_SESSION_CLOSED;
80 }
81
82 camera_status_t ret;
83 dev->lockDeviceForSessionOps();
84 {
85 Mutex::Autolock _l(mSessionLock);
86 ret = dev->stopRepeatingLocked();
87 }
88 dev->unlockDevice();
89 return ret;
90 }
91
92 camera_status_t
abortCaptures()93 ACameraCaptureSession::abortCaptures() {
94 sp<CameraDevice> dev = getDeviceSp();
95 if (dev == nullptr) {
96 ALOGE("Error: Device associated with session %p has been closed!", this);
97 return ACAMERA_ERROR_SESSION_CLOSED;
98 }
99
100 camera_status_t ret;
101 dev->lockDeviceForSessionOps();
102 {
103 Mutex::Autolock _l(mSessionLock);
104 ret = dev->flushLocked(this);
105 }
106 dev->unlockDevice();
107 return ret;
108 }
109
110 camera_status_t
setRepeatingRequest(ACameraCaptureSession_captureCallbacks * cbs,int numRequests,ACaptureRequest ** requests,int * captureSequenceId)111 ACameraCaptureSession::setRepeatingRequest(
112 /*optional*/ACameraCaptureSession_captureCallbacks* cbs,
113 int numRequests, ACaptureRequest** requests,
114 /*optional*/int* captureSequenceId) {
115 sp<CameraDevice> dev = getDeviceSp();
116 if (dev == nullptr) {
117 ALOGE("Error: Device associated with session %p has been closed!", this);
118 return ACAMERA_ERROR_SESSION_CLOSED;
119 }
120
121 camera_status_t ret;
122 dev->lockDeviceForSessionOps();
123 {
124 Mutex::Autolock _l(mSessionLock);
125 ret = dev->setRepeatingRequestsLocked(
126 this, cbs, numRequests, requests, captureSequenceId);
127 }
128 dev->unlockDevice();
129 return ret;
130 }
131
capture(ACameraCaptureSession_captureCallbacks * cbs,int numRequests,ACaptureRequest ** requests,int * captureSequenceId)132 camera_status_t ACameraCaptureSession::capture(
133 /*optional*/ACameraCaptureSession_captureCallbacks* cbs,
134 int numRequests, ACaptureRequest** requests,
135 /*optional*/int* captureSequenceId) {
136 sp<CameraDevice> dev = getDeviceSp();
137 if (dev == nullptr) {
138 ALOGE("Error: Device associated with session %p has been closed!", this);
139 return ACAMERA_ERROR_SESSION_CLOSED;
140 }
141 camera_status_t ret;
142 dev->lockDeviceForSessionOps();
143 {
144 Mutex::Autolock _l(mSessionLock);
145 ret = dev->captureLocked(this, cbs, numRequests, requests, captureSequenceId);
146 }
147 dev->unlockDevice();
148 return ret;
149 }
150
151 ACameraDevice*
getDevice()152 ACameraCaptureSession::getDevice() {
153 Mutex::Autolock _l(mSessionLock);
154 sp<CameraDevice> dev = getDeviceSp();
155 if (dev == nullptr) {
156 ALOGE("Error: Device associated with session %p has been closed!", this);
157 return nullptr;
158 }
159 return dev->getWrapper();
160 }
161
162 void
closeByDevice()163 ACameraCaptureSession::closeByDevice() {
164 Mutex::Autolock _l(mSessionLock);
165 mIsClosed = true;
166 }
167
168 sp<CameraDevice>
getDeviceSp()169 ACameraCaptureSession::getDeviceSp() {
170 sp<CameraDevice> device = mDevice.promote();
171 if (device == nullptr || device->isClosed()) {
172 ALOGW("Device is closed but session %d is not notified", mId);
173 return nullptr;
174 }
175 return device;
176 }
177
178
179