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 return OK;
89 }
90
returnBufferCheckedLocked(const camera3_stream_buffer & buffer,nsecs_t timestamp,bool output,sp<Fence> * releaseFenceOut)91 status_t Camera3InputStream::returnBufferCheckedLocked(
92 const camera3_stream_buffer &buffer,
93 nsecs_t timestamp,
94 bool output,
95 /*out*/
96 sp<Fence> *releaseFenceOut) {
97
98 (void)timestamp;
99 (void)output;
100 ALOG_ASSERT(!output, "Expected output to be false");
101
102 status_t res;
103
104 bool bufferFound = false;
105 BufferItem bufferItem;
106 {
107 // Find the buffer we are returning
108 Vector<BufferItem>::iterator it, end;
109 for (it = mBuffersInFlight.begin(), end = mBuffersInFlight.end();
110 it != end;
111 ++it) {
112
113 const BufferItem& tmp = *it;
114 ANativeWindowBuffer *anb = tmp.mGraphicBuffer->getNativeBuffer();
115 if (anb != NULL && &(anb->handle) == buffer.buffer) {
116 bufferFound = true;
117 bufferItem = tmp;
118 mBuffersInFlight.erase(it);
119 }
120 }
121 }
122 if (!bufferFound) {
123 ALOGE("%s: Stream %d: Can't return buffer that wasn't sent to HAL",
124 __FUNCTION__, mId);
125 return INVALID_OPERATION;
126 }
127
128 if (buffer.status == CAMERA3_BUFFER_STATUS_ERROR) {
129 if (buffer.release_fence != -1) {
130 ALOGE("%s: Stream %d: HAL should not set release_fence(%d) when "
131 "there is an error", __FUNCTION__, mId, buffer.release_fence);
132 close(buffer.release_fence);
133 }
134
135 /**
136 * Reassign release fence as the acquire fence incase of error
137 */
138 const_cast<camera3_stream_buffer*>(&buffer)->release_fence =
139 buffer.acquire_fence;
140 }
141
142 /**
143 * Unconditionally return buffer to the buffer queue.
144 * - Fwk takes over the release_fence ownership
145 */
146 sp<Fence> releaseFence = new Fence(buffer.release_fence);
147 res = mConsumer->releaseBuffer(bufferItem, releaseFence);
148 if (res != OK) {
149 ALOGE("%s: Stream %d: Error releasing buffer back to buffer queue:"
150 " %s (%d)", __FUNCTION__, mId, strerror(-res), res);
151 }
152
153 *releaseFenceOut = releaseFence;
154
155 return res;
156 }
157
returnInputBufferLocked(const camera3_stream_buffer & buffer)158 status_t Camera3InputStream::returnInputBufferLocked(
159 const camera3_stream_buffer &buffer) {
160 ATRACE_CALL();
161
162 return returnAnyBufferLocked(buffer, /*timestamp*/0, /*output*/false);
163 }
164
getInputBufferProducerLocked(sp<IGraphicBufferProducer> * producer)165 status_t Camera3InputStream::getInputBufferProducerLocked(
166 sp<IGraphicBufferProducer> *producer) {
167 ATRACE_CALL();
168
169 if (producer == NULL) {
170 return BAD_VALUE;
171 } else if (mProducer == NULL) {
172 ALOGE("%s: No input stream is configured");
173 return INVALID_OPERATION;
174 }
175
176 *producer = mProducer;
177 return OK;
178 }
179
disconnectLocked()180 status_t Camera3InputStream::disconnectLocked() {
181
182 status_t res;
183
184 if ((res = Camera3IOStreamBase::disconnectLocked()) != OK) {
185 return res;
186 }
187
188 assert(mBuffersInFlight.size() == 0);
189
190 mConsumer->abandon();
191
192 /**
193 * no-op since we can't disconnect the producer from the consumer-side
194 */
195
196 mState = (mState == STATE_IN_RECONFIG) ? STATE_IN_CONFIG
197 : STATE_CONSTRUCTED;
198 return OK;
199 }
200
dump(int fd,const Vector<String16> & args) const201 void Camera3InputStream::dump(int fd, const Vector<String16> &args) const {
202 (void) args;
203 String8 lines;
204 lines.appendFormat(" Stream[%d]: Input\n", mId);
205 write(fd, lines.string(), lines.size());
206
207 Camera3IOStreamBase::dump(fd, args);
208 }
209
configureQueueLocked()210 status_t Camera3InputStream::configureQueueLocked() {
211 status_t res;
212
213 if ((res = Camera3IOStreamBase::configureQueueLocked()) != OK) {
214 return res;
215 }
216
217 assert(mMaxSize == 0);
218 assert(camera3_stream::format != HAL_PIXEL_FORMAT_BLOB);
219
220 mHandoutTotalBufferCount = 0;
221 mFrameCount = 0;
222
223 if (mConsumer.get() == 0) {
224 sp<IGraphicBufferProducer> producer;
225 sp<IGraphicBufferConsumer> consumer;
226 BufferQueue::createBufferQueue(&producer, &consumer);
227
228 int minUndequeuedBuffers = 0;
229 res = producer->query(NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS, &minUndequeuedBuffers);
230 if (res != OK || minUndequeuedBuffers < 0) {
231 ALOGE("%s: Stream %d: Could not query min undequeued buffers (error %d, bufCount %d)",
232 __FUNCTION__, mId, res, minUndequeuedBuffers);
233 return res;
234 }
235 size_t minBufs = static_cast<size_t>(minUndequeuedBuffers);
236
237 if (camera3_stream::max_buffers == 0) {
238 ALOGE("%s: %d: HAL sets max_buffer to 0. Must be at least 1.",
239 __FUNCTION__, __LINE__);
240 return INVALID_OPERATION;
241 }
242
243 /*
244 * We promise never to 'acquire' more than camera3_stream::max_buffers
245 * at any one time.
246 *
247 * Boost the number up to meet the minimum required buffer count.
248 *
249 * (Note that this sets consumer-side buffer count only,
250 * and not the sum of producer+consumer side as in other camera streams).
251 */
252 mTotalBufferCount = camera3_stream::max_buffers > minBufs ?
253 camera3_stream::max_buffers : minBufs;
254 // TODO: somehow set the total buffer count when producer connects?
255
256 mConsumer = new BufferItemConsumer(consumer, camera3_stream::usage,
257 mTotalBufferCount);
258 mConsumer->setName(String8::format("Camera3-InputStream-%d", mId));
259
260 mProducer = producer;
261 }
262
263 res = mConsumer->setDefaultBufferSize(camera3_stream::width,
264 camera3_stream::height);
265 if (res != OK) {
266 ALOGE("%s: Stream %d: Could not set buffer dimensions %dx%d",
267 __FUNCTION__, mId, camera3_stream::width, camera3_stream::height);
268 return res;
269 }
270 res = mConsumer->setDefaultBufferFormat(camera3_stream::format);
271 if (res != OK) {
272 ALOGE("%s: Stream %d: Could not set buffer format %d",
273 __FUNCTION__, mId, camera3_stream::format);
274 return res;
275 }
276
277 return OK;
278 }
279
getEndpointUsage(uint32_t * usage) const280 status_t Camera3InputStream::getEndpointUsage(uint32_t *usage) const {
281 // Per HAL3 spec, input streams have 0 for their initial usage field.
282 *usage = 0;
283 return OK;
284 }
285
286 }; // namespace camera3
287
288 }; // namespace android
289