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
26namespace android {
27
28namespace camera3 {
29
30Camera3InputStream::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
41Camera3InputStream::~Camera3InputStream() {
42    disconnectLocked();
43}
44
45status_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
94status_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
162status_t Camera3InputStream::returnInputBufferLocked(
163        const camera3_stream_buffer &buffer) {
164    ATRACE_CALL();
165
166    return returnAnyBufferLocked(buffer, /*timestamp*/0, /*output*/false);
167}
168
169status_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
184status_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
205void 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
214status_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, camera3_stream::usage,
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
287status_t Camera3InputStream::getEndpointUsage(uint32_t *usage) const {
288    // Per HAL3 spec, input streams have 0 for their initial usage field.
289    *usage = 0;
290    return OK;
291}
292
293void Camera3InputStream::onBufferFreed(const wp<GraphicBuffer>& gb) {
294    const sp<GraphicBuffer> buffer = gb.promote();
295    if (buffer != nullptr) {
296        if (mBufferFreedListener != nullptr) {
297            mBufferFreedListener->onBufferFreed(mId, buffer->handle);
298        }
299    } else {
300        ALOGE("%s: GraphicBuffer is freed before onBufferFreed callback finishes!", __FUNCTION__);
301    }
302}
303
304}; // namespace camera3
305
306}; // namespace android
307