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 "Camera3-IOStreamBase"
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 #include "device3/Camera3IOStreamBase.h"
26 #include "device3/StatusTracker.h"
27
28 namespace android {
29
30 namespace camera3 {
31
Camera3IOStreamBase(int id,camera3_stream_type_t type,uint32_t width,uint32_t height,size_t maxSize,int format,android_dataspace dataSpace,camera3_stream_rotation_t rotation,int setId)32 Camera3IOStreamBase::Camera3IOStreamBase(int id, camera3_stream_type_t type,
33 uint32_t width, uint32_t height, size_t maxSize, int format,
34 android_dataspace dataSpace, camera3_stream_rotation_t rotation, int setId) :
35 Camera3Stream(id, type,
36 width, height, maxSize, format, dataSpace, rotation, setId),
37 mTotalBufferCount(0),
38 mHandoutTotalBufferCount(0),
39 mHandoutOutputBufferCount(0),
40 mFrameCount(0),
41 mLastTimestamp(0) {
42
43 mCombinedFence = new Fence();
44
45 if (maxSize > 0 &&
46 (format != HAL_PIXEL_FORMAT_BLOB && format != HAL_PIXEL_FORMAT_RAW_OPAQUE)) {
47 ALOGE("%s: Bad format for size-only stream: %d", __FUNCTION__,
48 format);
49 mState = STATE_ERROR;
50 }
51 }
52
~Camera3IOStreamBase()53 Camera3IOStreamBase::~Camera3IOStreamBase() {
54 disconnectLocked();
55 }
56
hasOutstandingBuffersLocked() const57 bool Camera3IOStreamBase::hasOutstandingBuffersLocked() const {
58 nsecs_t signalTime = mCombinedFence->getSignalTime();
59 ALOGV("%s: Stream %d: Has %zu outstanding buffers,"
60 " buffer signal time is %" PRId64,
61 __FUNCTION__, mId, mHandoutTotalBufferCount, signalTime);
62 if (mHandoutTotalBufferCount > 0 || signalTime == INT64_MAX) {
63 return true;
64 }
65 return false;
66 }
67
dump(int fd,const Vector<String16> & args) const68 void Camera3IOStreamBase::dump(int fd, const Vector<String16> &args) const {
69 (void) args;
70 String8 lines;
71
72 uint32_t consumerUsage = 0;
73 status_t res = getEndpointUsage(&consumerUsage);
74 if (res != OK) consumerUsage = 0;
75
76 lines.appendFormat(" State: %d\n", mState);
77 lines.appendFormat(" Dims: %d x %d, format 0x%x, dataspace 0x%x\n",
78 camera3_stream::width, camera3_stream::height,
79 camera3_stream::format, camera3_stream::data_space);
80 lines.appendFormat(" Max size: %zu\n", mMaxSize);
81 lines.appendFormat(" Combined usage: %d, max HAL buffers: %d\n",
82 camera3_stream::usage | consumerUsage, camera3_stream::max_buffers);
83 lines.appendFormat(" Frames produced: %d, last timestamp: %" PRId64 " ns\n",
84 mFrameCount, mLastTimestamp);
85 lines.appendFormat(" Total buffers: %zu, currently dequeued: %zu\n",
86 mTotalBufferCount, mHandoutTotalBufferCount);
87 write(fd, lines.string(), lines.size());
88 }
89
configureQueueLocked()90 status_t Camera3IOStreamBase::configureQueueLocked() {
91 status_t res;
92
93 switch (mState) {
94 case STATE_IN_RECONFIG:
95 res = disconnectLocked();
96 if (res != OK) {
97 return res;
98 }
99 break;
100 case STATE_IN_CONFIG:
101 // OK
102 break;
103 default:
104 ALOGE("%s: Bad state: %d", __FUNCTION__, mState);
105 return INVALID_OPERATION;
106 }
107
108 return OK;
109 }
110
getBufferCountLocked()111 size_t Camera3IOStreamBase::getBufferCountLocked() {
112 return mTotalBufferCount;
113 }
114
getHandoutOutputBufferCountLocked()115 size_t Camera3IOStreamBase::getHandoutOutputBufferCountLocked() {
116 return mHandoutOutputBufferCount;
117 }
118
getHandoutInputBufferCountLocked()119 size_t Camera3IOStreamBase::getHandoutInputBufferCountLocked() {
120 return (mHandoutTotalBufferCount - mHandoutOutputBufferCount);
121 }
122
disconnectLocked()123 status_t Camera3IOStreamBase::disconnectLocked() {
124 switch (mState) {
125 case STATE_IN_RECONFIG:
126 case STATE_CONFIGURED:
127 case STATE_ABANDONED:
128 // OK
129 break;
130 default:
131 // No connection, nothing to do
132 ALOGV("%s: Stream %d: Already disconnected",
133 __FUNCTION__, mId);
134 return -ENOTCONN;
135 }
136
137 if (mHandoutTotalBufferCount > 0) {
138 ALOGE("%s: Can't disconnect with %zu buffers still dequeued!",
139 __FUNCTION__, mHandoutTotalBufferCount);
140 return INVALID_OPERATION;
141 }
142
143 return OK;
144 }
145
handoutBufferLocked(camera3_stream_buffer & buffer,buffer_handle_t * handle,int acquireFence,int releaseFence,camera3_buffer_status_t status,bool output)146 void Camera3IOStreamBase::handoutBufferLocked(camera3_stream_buffer &buffer,
147 buffer_handle_t *handle,
148 int acquireFence,
149 int releaseFence,
150 camera3_buffer_status_t status,
151 bool output) {
152 /**
153 * Note that all fences are now owned by HAL.
154 */
155
156 // Handing out a raw pointer to this object. Increment internal refcount.
157 incStrong(this);
158 buffer.stream = this;
159 buffer.buffer = handle;
160 buffer.acquire_fence = acquireFence;
161 buffer.release_fence = releaseFence;
162 buffer.status = status;
163
164 // Inform tracker about becoming busy
165 if (mHandoutTotalBufferCount == 0 && mState != STATE_IN_CONFIG &&
166 mState != STATE_IN_RECONFIG && mState != STATE_PREPARING) {
167 /**
168 * Avoid a spurious IDLE->ACTIVE->IDLE transition when using buffers
169 * before/after register_stream_buffers during initial configuration
170 * or re-configuration, or during prepare pre-allocation
171 */
172 sp<StatusTracker> statusTracker = mStatusTracker.promote();
173 if (statusTracker != 0) {
174 statusTracker->markComponentActive(mStatusId);
175 }
176 }
177 mHandoutTotalBufferCount++;
178
179 if (output) {
180 mHandoutOutputBufferCount++;
181 }
182 }
183
getBufferPreconditionCheckLocked() const184 status_t Camera3IOStreamBase::getBufferPreconditionCheckLocked() const {
185 // Allow dequeue during IN_[RE]CONFIG for registration, in
186 // PREPARING for pre-allocation
187 if (mState != STATE_CONFIGURED &&
188 mState != STATE_IN_CONFIG && mState != STATE_IN_RECONFIG &&
189 mState != STATE_PREPARING) {
190 ALOGE("%s: Stream %d: Can't get buffers in unconfigured state %d",
191 __FUNCTION__, mId, mState);
192 return INVALID_OPERATION;
193 }
194
195 return OK;
196 }
197
returnBufferPreconditionCheckLocked() const198 status_t Camera3IOStreamBase::returnBufferPreconditionCheckLocked() const {
199 // Allow buffers to be returned in the error state, to allow for disconnect
200 // and in the in-config states for registration
201 if (mState == STATE_CONSTRUCTED) {
202 ALOGE("%s: Stream %d: Can't return buffers in unconfigured state %d",
203 __FUNCTION__, mId, mState);
204 return INVALID_OPERATION;
205 }
206 if (mHandoutTotalBufferCount == 0) {
207 ALOGE("%s: Stream %d: No buffers outstanding to return", __FUNCTION__,
208 mId);
209 return INVALID_OPERATION;
210 }
211
212 return OK;
213 }
214
returnAnyBufferLocked(const camera3_stream_buffer & buffer,nsecs_t timestamp,bool output)215 status_t Camera3IOStreamBase::returnAnyBufferLocked(
216 const camera3_stream_buffer &buffer,
217 nsecs_t timestamp,
218 bool output) {
219 status_t res;
220
221 // returnBuffer may be called from a raw pointer, not a sp<>, and we'll be
222 // decrementing the internal refcount next. In case this is the last ref, we
223 // might get destructed on the decStrong(), so keep an sp around until the
224 // end of the call - otherwise have to sprinkle the decStrong on all exit
225 // points.
226 sp<Camera3IOStreamBase> keepAlive(this);
227 decStrong(this);
228
229 if ((res = returnBufferPreconditionCheckLocked()) != OK) {
230 return res;
231 }
232
233 sp<Fence> releaseFence;
234 res = returnBufferCheckedLocked(buffer, timestamp, output,
235 &releaseFence);
236 // Res may be an error, but we still want to decrement our owned count
237 // to enable clean shutdown. So we'll just return the error but otherwise
238 // carry on
239
240 if (releaseFence != 0) {
241 mCombinedFence = Fence::merge(mName, mCombinedFence, releaseFence);
242 }
243
244 if (output) {
245 mHandoutOutputBufferCount--;
246 }
247
248 mHandoutTotalBufferCount--;
249 if (mHandoutTotalBufferCount == 0 && mState != STATE_IN_CONFIG &&
250 mState != STATE_IN_RECONFIG && mState != STATE_PREPARING) {
251 /**
252 * Avoid a spurious IDLE->ACTIVE->IDLE transition when using buffers
253 * before/after register_stream_buffers during initial configuration
254 * or re-configuration, or during prepare pre-allocation
255 */
256 ALOGV("%s: Stream %d: All buffers returned; now idle", __FUNCTION__,
257 mId);
258 sp<StatusTracker> statusTracker = mStatusTracker.promote();
259 if (statusTracker != 0) {
260 statusTracker->markComponentIdle(mStatusId, mCombinedFence);
261 }
262 }
263
264 mBufferReturnedSignal.signal();
265
266 if (output) {
267 mLastTimestamp = timestamp;
268 }
269
270 return res;
271 }
272
273
274
275 }; // namespace camera3
276
277 }; // namespace android
278