1 /*
2 * Copyright (C) 2013-2018 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
30 const String8 Camera3InputStream::DUMMY_ID;
31
Camera3InputStream(int id,uint32_t width,uint32_t height,int format)32 Camera3InputStream::Camera3InputStream(int id,
33 uint32_t width, uint32_t height, int format) :
34 Camera3IOStreamBase(id, CAMERA3_STREAM_INPUT, width, height, /*maxSize*/0,
35 format, HAL_DATASPACE_UNKNOWN, CAMERA3_STREAM_ROTATION_0,
36 DUMMY_ID) {
37
38 if (format == HAL_PIXEL_FORMAT_BLOB) {
39 ALOGE("%s: Bad format, BLOB not supported", __FUNCTION__);
40 mState = STATE_ERROR;
41 }
42 }
43
~Camera3InputStream()44 Camera3InputStream::~Camera3InputStream() {
45 disconnectLocked();
46 }
47
getInputBufferLocked(camera3_stream_buffer * buffer)48 status_t Camera3InputStream::getInputBufferLocked(
49 camera3_stream_buffer *buffer) {
50 ATRACE_CALL();
51 status_t res;
52
53 // FIXME: will not work in (re-)registration
54 if (mState == STATE_IN_CONFIG || mState == STATE_IN_RECONFIG) {
55 ALOGE("%s: Stream %d: Buffer registration for input streams"
56 " not implemented (state %d)",
57 __FUNCTION__, mId, mState);
58 return INVALID_OPERATION;
59 }
60
61 if ((res = getBufferPreconditionCheckLocked()) != OK) {
62 return res;
63 }
64
65 ANativeWindowBuffer* anb;
66 int fenceFd;
67
68 assert(mConsumer != 0);
69
70 BufferItem bufferItem;
71
72 res = mConsumer->acquireBuffer(&bufferItem, /*waitForFence*/false);
73 if (res != OK) {
74 ALOGE("%s: Stream %d: Can't acquire next output buffer: %s (%d)",
75 __FUNCTION__, mId, strerror(-res), res);
76 return res;
77 }
78
79 anb = bufferItem.mGraphicBuffer->getNativeBuffer();
80 assert(anb != NULL);
81 fenceFd = bufferItem.mFence->dup();
82
83 /**
84 * FenceFD now owned by HAL except in case of error,
85 * in which case we reassign it to acquire_fence
86 */
87 handoutBufferLocked(*buffer, &(anb->handle), /*acquireFence*/fenceFd,
88 /*releaseFence*/-1, CAMERA3_BUFFER_STATUS_OK, /*output*/false);
89 mBuffersInFlight.push_back(bufferItem);
90
91 mFrameCount++;
92 mLastTimestamp = bufferItem.mTimestamp;
93
94 return OK;
95 }
96
returnBufferCheckedLocked(const camera3_stream_buffer & buffer,nsecs_t timestamp,bool output,sp<Fence> * releaseFenceOut)97 status_t Camera3InputStream::returnBufferCheckedLocked(
98 const camera3_stream_buffer &buffer,
99 nsecs_t timestamp,
100 bool output,
101 /*out*/
102 sp<Fence> *releaseFenceOut) {
103
104 (void)timestamp;
105 (void)output;
106 ALOG_ASSERT(!output, "Expected output to be false");
107
108 status_t res;
109
110 bool bufferFound = false;
111 BufferItem bufferItem;
112 {
113 // Find the buffer we are returning
114 Vector<BufferItem>::iterator it, end;
115 for (it = mBuffersInFlight.begin(), end = mBuffersInFlight.end();
116 it != end;
117 ++it) {
118
119 const BufferItem& tmp = *it;
120 ANativeWindowBuffer *anb = tmp.mGraphicBuffer->getNativeBuffer();
121 if (anb != NULL && &(anb->handle) == buffer.buffer) {
122 bufferFound = true;
123 bufferItem = tmp;
124 mBuffersInFlight.erase(it);
125 break;
126 }
127 }
128 }
129 if (!bufferFound) {
130 ALOGE("%s: Stream %d: Can't return buffer that wasn't sent to HAL",
131 __FUNCTION__, mId);
132 return INVALID_OPERATION;
133 }
134
135 if (buffer.status == CAMERA3_BUFFER_STATUS_ERROR) {
136 if (buffer.release_fence != -1) {
137 ALOGE("%s: Stream %d: HAL should not set release_fence(%d) when "
138 "there is an error", __FUNCTION__, mId, buffer.release_fence);
139 close(buffer.release_fence);
140 }
141
142 /**
143 * Reassign release fence as the acquire fence incase of error
144 */
145 const_cast<camera3_stream_buffer*>(&buffer)->release_fence =
146 buffer.acquire_fence;
147 }
148
149 /**
150 * Unconditionally return buffer to the buffer queue.
151 * - Fwk takes over the release_fence ownership
152 */
153 sp<Fence> releaseFence = new Fence(buffer.release_fence);
154 res = mConsumer->releaseBuffer(bufferItem, releaseFence);
155 if (res != OK) {
156 ALOGE("%s: Stream %d: Error releasing buffer back to buffer queue:"
157 " %s (%d)", __FUNCTION__, mId, strerror(-res), res);
158 }
159
160 *releaseFenceOut = releaseFence;
161
162 return res;
163 }
164
returnInputBufferLocked(const camera3_stream_buffer & buffer)165 status_t Camera3InputStream::returnInputBufferLocked(
166 const camera3_stream_buffer &buffer) {
167 ATRACE_CALL();
168
169 return returnAnyBufferLocked(buffer, /*timestamp*/0, /*output*/false);
170 }
171
getInputBufferProducerLocked(sp<IGraphicBufferProducer> * producer)172 status_t Camera3InputStream::getInputBufferProducerLocked(
173 sp<IGraphicBufferProducer> *producer) {
174 ATRACE_CALL();
175
176 if (producer == NULL) {
177 return BAD_VALUE;
178 } else if (mProducer == NULL) {
179 ALOGE("%s: No input stream is configured", __FUNCTION__);
180 return INVALID_OPERATION;
181 }
182
183 *producer = mProducer;
184 return OK;
185 }
186
disconnectLocked()187 status_t Camera3InputStream::disconnectLocked() {
188
189 status_t res;
190
191 if ((res = Camera3IOStreamBase::disconnectLocked()) != OK) {
192 return res;
193 }
194
195 assert(mBuffersInFlight.size() == 0);
196
197 mConsumer->abandon();
198
199 /**
200 * no-op since we can't disconnect the producer from the consumer-side
201 */
202
203 mState = (mState == STATE_IN_RECONFIG) ? STATE_IN_CONFIG
204 : STATE_CONSTRUCTED;
205 return OK;
206 }
207
dump(int fd,const Vector<String16> & args) const208 void Camera3InputStream::dump(int fd, const Vector<String16> &args) const {
209 (void) args;
210 String8 lines;
211 lines.appendFormat(" Stream[%d]: Input\n", mId);
212 write(fd, lines.string(), lines.size());
213
214 Camera3IOStreamBase::dump(fd, args);
215 }
216
configureQueueLocked()217 status_t Camera3InputStream::configureQueueLocked() {
218 status_t res;
219
220 if ((res = Camera3IOStreamBase::configureQueueLocked()) != OK) {
221 return res;
222 }
223
224 assert(mMaxSize == 0);
225 assert(camera3_stream::format != HAL_PIXEL_FORMAT_BLOB);
226
227 mHandoutTotalBufferCount = 0;
228 mFrameCount = 0;
229 mLastTimestamp = 0;
230
231 if (mConsumer.get() == 0) {
232 sp<IGraphicBufferProducer> producer;
233 sp<IGraphicBufferConsumer> consumer;
234 BufferQueue::createBufferQueue(&producer, &consumer);
235
236 int minUndequeuedBuffers = 0;
237 res = producer->query(NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS, &minUndequeuedBuffers);
238 if (res != OK || minUndequeuedBuffers < 0) {
239 ALOGE("%s: Stream %d: Could not query min undequeued buffers (error %d, bufCount %d)",
240 __FUNCTION__, mId, res, minUndequeuedBuffers);
241 return res;
242 }
243 size_t minBufs = static_cast<size_t>(minUndequeuedBuffers);
244
245 if (camera3_stream::max_buffers == 0) {
246 ALOGE("%s: %d: HAL sets max_buffer to 0. Must be at least 1.",
247 __FUNCTION__, __LINE__);
248 return INVALID_OPERATION;
249 }
250
251 /*
252 * We promise never to 'acquire' more than camera3_stream::max_buffers
253 * at any one time.
254 *
255 * Boost the number up to meet the minimum required buffer count.
256 *
257 * (Note that this sets consumer-side buffer count only,
258 * and not the sum of producer+consumer side as in other camera streams).
259 */
260 mTotalBufferCount = camera3_stream::max_buffers > minBufs ?
261 camera3_stream::max_buffers : minBufs;
262 // TODO: somehow set the total buffer count when producer connects?
263
264 mConsumer = new BufferItemConsumer(consumer, mUsage,
265 mTotalBufferCount);
266 mConsumer->setName(String8::format("Camera3-InputStream-%d", mId));
267
268 mProducer = producer;
269
270 mConsumer->setBufferFreedListener(this);
271 }
272
273 res = mConsumer->setDefaultBufferSize(camera3_stream::width,
274 camera3_stream::height);
275 if (res != OK) {
276 ALOGE("%s: Stream %d: Could not set buffer dimensions %dx%d",
277 __FUNCTION__, mId, camera3_stream::width, camera3_stream::height);
278 return res;
279 }
280 res = mConsumer->setDefaultBufferFormat(camera3_stream::format);
281 if (res != OK) {
282 ALOGE("%s: Stream %d: Could not set buffer format %d",
283 __FUNCTION__, mId, camera3_stream::format);
284 return res;
285 }
286
287 return OK;
288 }
289
getEndpointUsage(uint64_t * usage) const290 status_t Camera3InputStream::getEndpointUsage(uint64_t *usage) const {
291 // Per HAL3 spec, input streams have 0 for their initial usage field.
292 *usage = 0;
293 return OK;
294 }
295
onBufferFreed(const wp<GraphicBuffer> & gb)296 void Camera3InputStream::onBufferFreed(const wp<GraphicBuffer>& gb) {
297 const sp<GraphicBuffer> buffer = gb.promote();
298 if (buffer != nullptr) {
299 camera3_stream_buffer streamBuffer =
300 {nullptr, &buffer->handle, 0, -1, -1};
301 // Check if this buffer is outstanding.
302 if (isOutstandingBuffer(streamBuffer)) {
303 ALOGV("%s: Stream %d: Trying to free a buffer that is still being "
304 "processed.", __FUNCTION__, mId);
305 return;
306 }
307
308 sp<Camera3StreamBufferFreedListener> callback = mBufferFreedListener.promote();
309 if (callback != nullptr) {
310 callback->onBufferFreed(mId, buffer->handle);
311 }
312 } else {
313 ALOGE("%s: GraphicBuffer is freed before onBufferFreed callback finishes!", __FUNCTION__);
314 }
315 }
316
317 }; // namespace camera3
318
319 }; // namespace android
320