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-InputStream"
18 #define ATRACE_TAG ATRACE_TAG_CAMERA
19 //#define LOG_NDEBUG 0
20
21 #include <gui/BufferItem.h>
22 #include <utils/Log.h>
23 #include <utils/Trace.h>
24 #include "Camera3InputStream.h"
25
26 namespace android {
27
28 namespace camera3 {
29
Camera3InputStream(int id,uint32_t width,uint32_t height,int format)30 Camera3InputStream::Camera3InputStream(int id,
31 uint32_t width, uint32_t height, int format) :
32 Camera3IOStreamBase(id, CAMERA3_STREAM_INPUT, width, height, /*maxSize*/0,
33 format, HAL_DATASPACE_UNKNOWN, CAMERA3_STREAM_ROTATION_0) {
34
35 if (format == HAL_PIXEL_FORMAT_BLOB) {
36 ALOGE("%s: Bad format, BLOB not supported", __FUNCTION__);
37 mState = STATE_ERROR;
38 }
39 }
40
~Camera3InputStream()41 Camera3InputStream::~Camera3InputStream() {
42 disconnectLocked();
43 }
44
getInputBufferLocked(camera3_stream_buffer * buffer)45 status_t Camera3InputStream::getInputBufferLocked(
46 camera3_stream_buffer *buffer) {
47 ATRACE_CALL();
48 status_t res;
49
50 // FIXME: will not work in (re-)registration
51 if (mState == STATE_IN_CONFIG || mState == STATE_IN_RECONFIG) {
52 ALOGE("%s: Stream %d: Buffer registration for input streams"
53 " not implemented (state %d)",
54 __FUNCTION__, mId, mState);
55 return INVALID_OPERATION;
56 }
57
58 if ((res = getBufferPreconditionCheckLocked()) != OK) {
59 return res;
60 }
61
62 ANativeWindowBuffer* anb;
63 int fenceFd;
64
65 assert(mConsumer != 0);
66
67 BufferItem bufferItem;
68
69 res = mConsumer->acquireBuffer(&bufferItem, /*waitForFence*/false);
70 if (res != OK) {
71 ALOGE("%s: Stream %d: Can't acquire next output buffer: %s (%d)",
72 __FUNCTION__, mId, strerror(-res), res);
73 return res;
74 }
75
76 anb = bufferItem.mGraphicBuffer->getNativeBuffer();
77 assert(anb != NULL);
78 fenceFd = bufferItem.mFence->dup();
79
80 /**
81 * FenceFD now owned by HAL except in case of error,
82 * in which case we reassign it to acquire_fence
83 */
84 handoutBufferLocked(*buffer, &(anb->handle), /*acquireFence*/fenceFd,
85 /*releaseFence*/-1, CAMERA3_BUFFER_STATUS_OK, /*output*/false);
86 mBuffersInFlight.push_back(bufferItem);
87
88 mFrameCount++;
89 mLastTimestamp = bufferItem.mTimestamp;
90
91 return OK;
92 }
93
returnBufferCheckedLocked(const camera3_stream_buffer & buffer,nsecs_t timestamp,bool output,sp<Fence> * releaseFenceOut)94 status_t Camera3InputStream::returnBufferCheckedLocked(
95 const camera3_stream_buffer &buffer,
96 nsecs_t timestamp,
97 bool output,
98 /*out*/
99 sp<Fence> *releaseFenceOut) {
100
101 (void)timestamp;
102 (void)output;
103 ALOG_ASSERT(!output, "Expected output to be false");
104
105 status_t res;
106
107 bool bufferFound = false;
108 BufferItem bufferItem;
109 {
110 // Find the buffer we are returning
111 Vector<BufferItem>::iterator it, end;
112 for (it = mBuffersInFlight.begin(), end = mBuffersInFlight.end();
113 it != end;
114 ++it) {
115
116 const BufferItem& tmp = *it;
117 ANativeWindowBuffer *anb = tmp.mGraphicBuffer->getNativeBuffer();
118 if (anb != NULL && &(anb->handle) == buffer.buffer) {
119 bufferFound = true;
120 bufferItem = tmp;
121 mBuffersInFlight.erase(it);
122 break;
123 }
124 }
125 }
126 if (!bufferFound) {
127 ALOGE("%s: Stream %d: Can't return buffer that wasn't sent to HAL",
128 __FUNCTION__, mId);
129 return INVALID_OPERATION;
130 }
131
132 if (buffer.status == CAMERA3_BUFFER_STATUS_ERROR) {
133 if (buffer.release_fence != -1) {
134 ALOGE("%s: Stream %d: HAL should not set release_fence(%d) when "
135 "there is an error", __FUNCTION__, mId, buffer.release_fence);
136 close(buffer.release_fence);
137 }
138
139 /**
140 * Reassign release fence as the acquire fence incase of error
141 */
142 const_cast<camera3_stream_buffer*>(&buffer)->release_fence =
143 buffer.acquire_fence;
144 }
145
146 /**
147 * Unconditionally return buffer to the buffer queue.
148 * - Fwk takes over the release_fence ownership
149 */
150 sp<Fence> releaseFence = new Fence(buffer.release_fence);
151 res = mConsumer->releaseBuffer(bufferItem, releaseFence);
152 if (res != OK) {
153 ALOGE("%s: Stream %d: Error releasing buffer back to buffer queue:"
154 " %s (%d)", __FUNCTION__, mId, strerror(-res), res);
155 }
156
157 *releaseFenceOut = releaseFence;
158
159 return res;
160 }
161
returnInputBufferLocked(const camera3_stream_buffer & buffer)162 status_t Camera3InputStream::returnInputBufferLocked(
163 const camera3_stream_buffer &buffer) {
164 ATRACE_CALL();
165
166 return returnAnyBufferLocked(buffer, /*timestamp*/0, /*output*/false);
167 }
168
getInputBufferProducerLocked(sp<IGraphicBufferProducer> * producer)169 status_t Camera3InputStream::getInputBufferProducerLocked(
170 sp<IGraphicBufferProducer> *producer) {
171 ATRACE_CALL();
172
173 if (producer == NULL) {
174 return BAD_VALUE;
175 } else if (mProducer == NULL) {
176 ALOGE("%s: No input stream is configured", __FUNCTION__);
177 return INVALID_OPERATION;
178 }
179
180 *producer = mProducer;
181 return OK;
182 }
183
disconnectLocked()184 status_t Camera3InputStream::disconnectLocked() {
185
186 status_t res;
187
188 if ((res = Camera3IOStreamBase::disconnectLocked()) != OK) {
189 return res;
190 }
191
192 assert(mBuffersInFlight.size() == 0);
193
194 mConsumer->abandon();
195
196 /**
197 * no-op since we can't disconnect the producer from the consumer-side
198 */
199
200 mState = (mState == STATE_IN_RECONFIG) ? STATE_IN_CONFIG
201 : STATE_CONSTRUCTED;
202 return OK;
203 }
204
dump(int fd,const Vector<String16> & args) const205 void Camera3InputStream::dump(int fd, const Vector<String16> &args) const {
206 (void) args;
207 String8 lines;
208 lines.appendFormat(" Stream[%d]: Input\n", mId);
209 write(fd, lines.string(), lines.size());
210
211 Camera3IOStreamBase::dump(fd, args);
212 }
213
configureQueueLocked()214 status_t Camera3InputStream::configureQueueLocked() {
215 status_t res;
216
217 if ((res = Camera3IOStreamBase::configureQueueLocked()) != OK) {
218 return res;
219 }
220
221 assert(mMaxSize == 0);
222 assert(camera3_stream::format != HAL_PIXEL_FORMAT_BLOB);
223
224 mHandoutTotalBufferCount = 0;
225 mFrameCount = 0;
226 mLastTimestamp = 0;
227
228 if (mConsumer.get() == 0) {
229 sp<IGraphicBufferProducer> producer;
230 sp<IGraphicBufferConsumer> consumer;
231 BufferQueue::createBufferQueue(&producer, &consumer);
232
233 int minUndequeuedBuffers = 0;
234 res = producer->query(NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS, &minUndequeuedBuffers);
235 if (res != OK || minUndequeuedBuffers < 0) {
236 ALOGE("%s: Stream %d: Could not query min undequeued buffers (error %d, bufCount %d)",
237 __FUNCTION__, mId, res, minUndequeuedBuffers);
238 return res;
239 }
240 size_t minBufs = static_cast<size_t>(minUndequeuedBuffers);
241
242 if (camera3_stream::max_buffers == 0) {
243 ALOGE("%s: %d: HAL sets max_buffer to 0. Must be at least 1.",
244 __FUNCTION__, __LINE__);
245 return INVALID_OPERATION;
246 }
247
248 /*
249 * We promise never to 'acquire' more than camera3_stream::max_buffers
250 * at any one time.
251 *
252 * Boost the number up to meet the minimum required buffer count.
253 *
254 * (Note that this sets consumer-side buffer count only,
255 * and not the sum of producer+consumer side as in other camera streams).
256 */
257 mTotalBufferCount = camera3_stream::max_buffers > minBufs ?
258 camera3_stream::max_buffers : minBufs;
259 // TODO: somehow set the total buffer count when producer connects?
260
261 mConsumer = new BufferItemConsumer(consumer, mUsage,
262 mTotalBufferCount);
263 mConsumer->setName(String8::format("Camera3-InputStream-%d", mId));
264
265 mProducer = producer;
266
267 mConsumer->setBufferFreedListener(this);
268 }
269
270 res = mConsumer->setDefaultBufferSize(camera3_stream::width,
271 camera3_stream::height);
272 if (res != OK) {
273 ALOGE("%s: Stream %d: Could not set buffer dimensions %dx%d",
274 __FUNCTION__, mId, camera3_stream::width, camera3_stream::height);
275 return res;
276 }
277 res = mConsumer->setDefaultBufferFormat(camera3_stream::format);
278 if (res != OK) {
279 ALOGE("%s: Stream %d: Could not set buffer format %d",
280 __FUNCTION__, mId, camera3_stream::format);
281 return res;
282 }
283
284 return OK;
285 }
286
getEndpointUsage(uint64_t * usage) const287 status_t Camera3InputStream::getEndpointUsage(uint64_t *usage) const {
288 // Per HAL3 spec, input streams have 0 for their initial usage field.
289 *usage = 0;
290 return OK;
291 }
292
onBufferFreed(const wp<GraphicBuffer> & gb)293 void Camera3InputStream::onBufferFreed(const wp<GraphicBuffer>& gb) {
294 const sp<GraphicBuffer> buffer = gb.promote();
295 if (buffer != nullptr) {
296 camera3_stream_buffer streamBuffer =
297 {nullptr, &buffer->handle, 0, -1, -1};
298 // Check if this buffer is outstanding.
299 if (isOutstandingBuffer(streamBuffer)) {
300 ALOGV("%s: Stream %d: Trying to free a buffer that is still being "
301 "processed.", __FUNCTION__, mId);
302 return;
303 }
304
305 sp<Camera3StreamBufferFreedListener> callback = mBufferFreedListener.promote();
306 if (callback != nullptr) {
307 callback->onBufferFreed(mId, buffer->handle);
308 }
309 } else {
310 ALOGE("%s: GraphicBuffer is freed before onBufferFreed callback finishes!", __FUNCTION__);
311 }
312 }
313
314 }; // namespace camera3
315
316 }; // namespace android
317