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 /**
18 * Contains implementation of a class EmulatedCamera that encapsulates
19 * functionality common to all version 3.0 emulated camera devices. Instances
20 * of this class (for each emulated camera) are created during the construction
21 * of the EmulatedCameraFactory instance. This class serves as an entry point
22 * for all camera API calls that defined by camera3_device_ops_t API.
23 */
24
25 #define LOG_NDEBUG 0
26 #define LOG_TAG "EmulatedCamera3_Camera"
27 #include <log/log.h>
28
29 #include "EmulatedCamera3.h"
30 #include "system/camera_metadata.h"
31
32 namespace android {
33
34 /**
35 * Constructs EmulatedCamera3 instance.
36 * Param:
37 * cameraId - Zero based camera identifier, which is an index of the camera
38 * instance in camera factory's array.
39 * module - Emulated camera HAL module descriptor.
40 */
EmulatedCamera3(int cameraId,struct hw_module_t * module)41 EmulatedCamera3::EmulatedCamera3(int cameraId, struct hw_module_t* module)
42 : EmulatedBaseCamera(cameraId, CAMERA_DEVICE_API_VERSION_3_3, &common,
43 module),
44 mStatus(STATUS_ERROR) {
45 common.close = EmulatedCamera3::close;
46 ops = &sDeviceOps;
47
48 mCallbackOps = NULL;
49 }
50
51 /* Destructs EmulatedCamera3 instance. */
~EmulatedCamera3()52 EmulatedCamera3::~EmulatedCamera3() {}
53
54 /****************************************************************************
55 * Abstract API
56 ***************************************************************************/
57
58 /****************************************************************************
59 * Public API
60 ***************************************************************************/
61
Initialize(const cvd::CameraDefinition &)62 status_t EmulatedCamera3::Initialize(const cvd::CameraDefinition& /*params*/) {
63 ALOGV("%s", __FUNCTION__);
64
65 mStatus = STATUS_CLOSED;
66 return NO_ERROR;
67 }
68
69 /****************************************************************************
70 * Camera API implementation
71 ***************************************************************************/
72
connectCamera(hw_device_t ** device)73 status_t EmulatedCamera3::connectCamera(hw_device_t** device) {
74 ALOGV("%s", __FUNCTION__);
75 if (device == NULL) return BAD_VALUE;
76
77 if (mStatus != STATUS_CLOSED) {
78 ALOGE("%s: Trying to open a camera in state %d!", __FUNCTION__, mStatus);
79 return INVALID_OPERATION;
80 }
81
82 *device = &common;
83 mStatus = STATUS_OPEN;
84 return NO_ERROR;
85 }
86
closeCamera()87 status_t EmulatedCamera3::closeCamera() {
88 mStatus = STATUS_CLOSED;
89 return NO_ERROR;
90 }
91
getCameraInfo(struct camera_info * info)92 status_t EmulatedCamera3::getCameraInfo(struct camera_info* info) {
93 return EmulatedBaseCamera::getCameraInfo(info);
94 }
95
96 /****************************************************************************
97 * Camera Device API implementation.
98 * These methods are called from the camera API callback routines.
99 ***************************************************************************/
100
initializeDevice(const camera3_callback_ops * callbackOps)101 status_t EmulatedCamera3::initializeDevice(
102 const camera3_callback_ops* callbackOps) {
103 if (callbackOps == NULL) {
104 ALOGE("%s: NULL callback ops provided to HAL!", __FUNCTION__);
105 return BAD_VALUE;
106 }
107
108 if (mStatus != STATUS_OPEN) {
109 ALOGE("%s: Trying to initialize a camera in state %d!", __FUNCTION__,
110 mStatus);
111 return INVALID_OPERATION;
112 }
113
114 mCallbackOps = callbackOps;
115 mStatus = STATUS_READY;
116
117 return NO_ERROR;
118 }
119
configureStreams(camera3_stream_configuration *)120 status_t EmulatedCamera3::configureStreams(
121 camera3_stream_configuration* /*streamList*/) {
122 ALOGE("%s: Not implemented", __FUNCTION__);
123 return INVALID_OPERATION;
124 }
125
registerStreamBuffers(const camera3_stream_buffer_set *)126 status_t EmulatedCamera3::registerStreamBuffers(
127 const camera3_stream_buffer_set* /*bufferSet*/) {
128 ALOGE("%s: Not implemented", __FUNCTION__);
129 return INVALID_OPERATION;
130 }
131
constructDefaultRequestSettings(int)132 const camera_metadata_t* EmulatedCamera3::constructDefaultRequestSettings(
133 int /*type*/) {
134 ALOGE("%s: Not implemented", __FUNCTION__);
135 return NULL;
136 }
137
processCaptureRequest(camera3_capture_request *)138 status_t EmulatedCamera3::processCaptureRequest(
139 camera3_capture_request* /*request*/) {
140 ALOGE("%s: Not implemented", __FUNCTION__);
141 return INVALID_OPERATION;
142 }
143
flush()144 status_t EmulatedCamera3::flush() {
145 ALOGE("%s: Not implemented", __FUNCTION__);
146 return INVALID_OPERATION;
147 }
148
149 /** Debug methods */
150
dump(int)151 void EmulatedCamera3::dump(int /*fd*/) {
152 ALOGE("%s: Not implemented", __FUNCTION__);
153 return;
154 }
155
156 /****************************************************************************
157 * Protected API. Callbacks to the framework.
158 ***************************************************************************/
159
sendCaptureResult(camera3_capture_result_t * result)160 void EmulatedCamera3::sendCaptureResult(camera3_capture_result_t* result) {
161 mCallbackOps->process_capture_result(mCallbackOps, result);
162 }
163
sendNotify(camera3_notify_msg_t * msg)164 void EmulatedCamera3::sendNotify(camera3_notify_msg_t* msg) {
165 mCallbackOps->notify(mCallbackOps, msg);
166 }
167
168 /****************************************************************************
169 * Private API.
170 ***************************************************************************/
171
172 /****************************************************************************
173 * Camera API callbacks as defined by camera3_device_ops structure. See
174 * hardware/libhardware/include/hardware/camera3.h for information on each
175 * of these callbacks. Implemented in this class, these callbacks simply
176 * dispatch the call into an instance of EmulatedCamera3 class defined by the
177 * 'camera_device3' parameter, or set a member value in the same.
178 ***************************************************************************/
179
getInstance(const camera3_device_t * d)180 EmulatedCamera3* getInstance(const camera3_device_t* d) {
181 const EmulatedCamera3* cec = static_cast<const EmulatedCamera3*>(d);
182 return const_cast<EmulatedCamera3*>(cec);
183 }
184
initialize(const struct camera3_device * d,const camera3_callback_ops_t * callback_ops)185 int EmulatedCamera3::initialize(const struct camera3_device* d,
186 const camera3_callback_ops_t* callback_ops) {
187 EmulatedCamera3* ec = getInstance(d);
188 return ec->initializeDevice(callback_ops);
189 }
190
configure_streams(const struct camera3_device * d,camera3_stream_configuration_t * stream_list)191 int EmulatedCamera3::configure_streams(
192 const struct camera3_device* d,
193 camera3_stream_configuration_t* stream_list) {
194 EmulatedCamera3* ec = getInstance(d);
195 return ec->configureStreams(stream_list);
196 }
197
register_stream_buffers(const struct camera3_device * d,const camera3_stream_buffer_set_t * buffer_set)198 int EmulatedCamera3::register_stream_buffers(
199 const struct camera3_device* d,
200 const camera3_stream_buffer_set_t* buffer_set) {
201 EmulatedCamera3* ec = getInstance(d);
202 return ec->registerStreamBuffers(buffer_set);
203 }
204
process_capture_request(const struct camera3_device * d,camera3_capture_request_t * request)205 int EmulatedCamera3::process_capture_request(
206 const struct camera3_device* d, camera3_capture_request_t* request) {
207 EmulatedCamera3* ec = getInstance(d);
208 return ec->processCaptureRequest(request);
209 }
210
construct_default_request_settings(const camera3_device_t * d,int type)211 const camera_metadata_t* EmulatedCamera3::construct_default_request_settings(
212 const camera3_device_t* d, int type) {
213 EmulatedCamera3* ec = getInstance(d);
214 return ec->constructDefaultRequestSettings(type);
215 }
216
dump(const camera3_device_t * d,int fd)217 void EmulatedCamera3::dump(const camera3_device_t* d, int fd) {
218 EmulatedCamera3* ec = getInstance(d);
219 ec->dump(fd);
220 }
221
flush(const camera3_device_t * d)222 int EmulatedCamera3::flush(const camera3_device_t* d) {
223 EmulatedCamera3* ec = getInstance(d);
224 return ec->flush();
225 }
226
close(struct hw_device_t * device)227 int EmulatedCamera3::close(struct hw_device_t* device) {
228 EmulatedCamera3* ec = static_cast<EmulatedCamera3*>(
229 reinterpret_cast<camera3_device_t*>(device));
230 if (ec == NULL) {
231 ALOGE("%s: Unexpected NULL camera3 device", __FUNCTION__);
232 return BAD_VALUE;
233 }
234 return ec->closeCamera();
235 }
236
237 camera3_device_ops_t EmulatedCamera3::sDeviceOps = {
238 EmulatedCamera3::initialize,
239 EmulatedCamera3::configure_streams,
240 /* DEPRECATED: register_stream_buffers */ nullptr,
241 EmulatedCamera3::construct_default_request_settings,
242 EmulatedCamera3::process_capture_request,
243 /* DEPRECATED: get_metadata_vendor_tag_ops */ nullptr,
244 EmulatedCamera3::dump,
245 EmulatedCamera3::flush,
246 #ifdef CAMERA_DEVICE_API_VERSION_3_6
247 /*UNUSED: signal_stream_flush*/nullptr,
248 /*UNUSED: is_reconfiguration_required*/nullptr,
249 #endif
250 {0}};
251
252 const char* EmulatedCamera3::sAvailableCapabilitiesStrings[NUM_CAPABILITIES] = {
253 "BACKWARD_COMPATIBLE",
254 "MANUAL_SENSOR",
255 "MANUAL_POST_PROCESSING",
256 "RAW",
257 "PRIVATE_REPROCESSING",
258 "READ_SENSOR_SETTINGS",
259 "BURST_CAPTURE",
260 "YUV_REPROCESSING",
261 "DEPTH_OUTPUT",
262 "CONSTRAINED_HIGH_SPEED_VIDEO",
263 "FULL_LEVEL"};
264
265 }; /* namespace android */
266