Camera3Device.cpp revision 9c8a091436052fb0f3290356abe1ac55b7bae8a2 
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-Device"
18#define ATRACE_TAG ATRACE_TAG_CAMERA
19//#define LOG_NDEBUG 0
20//#define LOG_NNDEBUG 0  // Per-frame verbose logging
21
22#ifdef LOG_NNDEBUG
23#define ALOGVV(...) ALOGV(__VA_ARGS__)
24#else
25#define ALOGVV(...) ((void)0)
26#endif
27
28// Convenience macro for transient errors
29#define CLOGE(fmt, ...) ALOGE("Camera %d: %s: " fmt, mId, __FUNCTION__, \
30            ##__VA_ARGS__)
31
32// Convenience macros for transitioning to the error state
33#define SET_ERR(fmt, ...) setErrorState(   \
34    "%s: " fmt, __FUNCTION__,              \
35    ##__VA_ARGS__)
36#define SET_ERR_L(fmt, ...) setErrorStateLocked( \
37    "%s: " fmt, __FUNCTION__,                    \
38    ##__VA_ARGS__)
39
40#include <inttypes.h>
41
42#include <utils/Log.h>
43#include <utils/Trace.h>
44#include <utils/Timers.h>
45
46#include "utils/CameraTraces.h"
47#include "device3/Camera3Device.h"
48#include "device3/Camera3OutputStream.h"
49#include "device3/Camera3InputStream.h"
50#include "device3/Camera3ZslStream.h"
51#include "device3/Camera3DummyStream.h"
52#include "CameraService.h"
53
54using namespace android::camera3;
55
56namespace android {
57
58Camera3Device::Camera3Device(int id):
59        mId(id),
60        mHal3Device(NULL),
61        mStatus(STATUS_UNINITIALIZED),
62        mUsePartialResult(false),
63        mNumPartialResults(1),
64        mNextResultFrameNumber(0),
65        mNextShutterFrameNumber(0),
66        mListener(NULL)
67{
68    ATRACE_CALL();
69    camera3_callback_ops::notify = &sNotify;
70    camera3_callback_ops::process_capture_result = &sProcessCaptureResult;
71    ALOGV("%s: Created device for camera %d", __FUNCTION__, id);
72}
73
74Camera3Device::~Camera3Device()
75{
76    ATRACE_CALL();
77    ALOGV("%s: Tearing down for camera id %d", __FUNCTION__, mId);
78    disconnect();
79}
80
81int Camera3Device::getId() const {
82    return mId;
83}
84
85/**
86 * CameraDeviceBase interface
87 */
88
89status_t Camera3Device::initialize(camera_module_t *module)
90{
91    ATRACE_CALL();
92    Mutex::Autolock il(mInterfaceLock);
93    Mutex::Autolock l(mLock);
94
95    ALOGV("%s: Initializing device for camera %d", __FUNCTION__, mId);
96    if (mStatus != STATUS_UNINITIALIZED) {
97        CLOGE("Already initialized!");
98        return INVALID_OPERATION;
99    }
100
101    /** Open HAL device */
102
103    status_t res;
104    String8 deviceName = String8::format("%d", mId);
105
106    camera3_device_t *device;
107
108    ATRACE_BEGIN("camera3->open");
109    res = CameraService::filterOpenErrorCode(module->common.methods->open(
110        &module->common, deviceName.string(),
111        reinterpret_cast<hw_device_t**>(&device)));
112    ATRACE_END();
113
114    if (res != OK) {
115        SET_ERR_L("Could not open camera: %s (%d)", strerror(-res), res);
116        return res;
117    }
118
119    /** Cross-check device version */
120    if (device->common.version < CAMERA_DEVICE_API_VERSION_3_0) {
121        SET_ERR_L("Could not open camera: "
122                "Camera device should be at least %x, reports %x instead",
123                CAMERA_DEVICE_API_VERSION_3_0,
124                device->common.version);
125        device->common.close(&device->common);
126        return BAD_VALUE;
127    }
128
129    camera_info info;
130    res = CameraService::filterGetInfoErrorCode(module->get_camera_info(
131        mId, &info));
132    if (res != OK) return res;
133
134    if (info.device_version != device->common.version) {
135        SET_ERR_L("HAL reporting mismatched camera_info version (%x)"
136                " and device version (%x).",
137                info.device_version, device->common.version);
138        device->common.close(&device->common);
139        return BAD_VALUE;
140    }
141
142    /** Initialize device with callback functions */
143
144    ATRACE_BEGIN("camera3->initialize");
145    res = device->ops->initialize(device, this);
146    ATRACE_END();
147
148    if (res != OK) {
149        SET_ERR_L("Unable to initialize HAL device: %s (%d)",
150                strerror(-res), res);
151        device->common.close(&device->common);
152        return BAD_VALUE;
153    }
154
155    /** Start up status tracker thread */
156    mStatusTracker = new StatusTracker(this);
157    res = mStatusTracker->run(String8::format("C3Dev-%d-Status", mId).string());
158    if (res != OK) {
159        SET_ERR_L("Unable to start status tracking thread: %s (%d)",
160                strerror(-res), res);
161        device->common.close(&device->common);
162        mStatusTracker.clear();
163        return res;
164    }
165
166    /** Start up request queue thread */
167
168    mRequestThread = new RequestThread(this, mStatusTracker, device);
169    res = mRequestThread->run(String8::format("C3Dev-%d-ReqQueue", mId).string());
170    if (res != OK) {
171        SET_ERR_L("Unable to start request queue thread: %s (%d)",
172                strerror(-res), res);
173        device->common.close(&device->common);
174        mRequestThread.clear();
175        return res;
176    }
177
178    /** Everything is good to go */
179
180    mDeviceVersion = device->common.version;
181    mDeviceInfo = info.static_camera_characteristics;
182    mHal3Device = device;
183    mStatus = STATUS_UNCONFIGURED;
184    mNextStreamId = 0;
185    mDummyStreamId = NO_STREAM;
186    mNeedConfig = true;
187    mPauseStateNotify = false;
188
189    // Will the HAL be sending in early partial result metadata?
190    if (mDeviceVersion >= CAMERA_DEVICE_API_VERSION_3_2) {
191        camera_metadata_entry partialResultsCount =
192                mDeviceInfo.find(ANDROID_REQUEST_PARTIAL_RESULT_COUNT);
193        if (partialResultsCount.count > 0) {
194            mNumPartialResults = partialResultsCount.data.i32[0];
195            mUsePartialResult = (mNumPartialResults > 1);
196        }
197    } else {
198        camera_metadata_entry partialResultsQuirk =
199                mDeviceInfo.find(ANDROID_QUIRKS_USE_PARTIAL_RESULT);
200        if (partialResultsQuirk.count > 0 && partialResultsQuirk.data.u8[0] == 1) {
201            mUsePartialResult = true;
202        }
203    }
204
205    return OK;
206}
207
208status_t Camera3Device::disconnect() {
209    ATRACE_CALL();
210    Mutex::Autolock il(mInterfaceLock);
211
212    ALOGV("%s: E", __FUNCTION__);
213
214    status_t res = OK;
215
216    {
217        Mutex::Autolock l(mLock);
218        if (mStatus == STATUS_UNINITIALIZED) return res;
219
220        if (mStatus == STATUS_ACTIVE ||
221                (mStatus == STATUS_ERROR && mRequestThread != NULL)) {
222            res = mRequestThread->clearRepeatingRequests();
223            if (res != OK) {
224                SET_ERR_L("Can't stop streaming");
225                // Continue to close device even in case of error
226            } else {
227                res = waitUntilStateThenRelock(/*active*/ false, kShutdownTimeout);
228                if (res != OK) {
229                    SET_ERR_L("Timeout waiting for HAL to drain");
230                    // Continue to close device even in case of error
231                }
232            }
233        }
234
235        if (mStatus == STATUS_ERROR) {
236            CLOGE("Shutting down in an error state");
237        }
238
239        if (mStatusTracker != NULL) {
240            mStatusTracker->requestExit();
241        }
242
243        if (mRequestThread != NULL) {
244            mRequestThread->requestExit();
245        }
246
247        mOutputStreams.clear();
248        mInputStream.clear();
249    }
250
251    // Joining done without holding mLock, otherwise deadlocks may ensue
252    // as the threads try to access parent state
253    if (mRequestThread != NULL && mStatus != STATUS_ERROR) {
254        // HAL may be in a bad state, so waiting for request thread
255        // (which may be stuck in the HAL processCaptureRequest call)
256        // could be dangerous.
257        mRequestThread->join();
258    }
259
260    if (mStatusTracker != NULL) {
261        mStatusTracker->join();
262    }
263
264    {
265        Mutex::Autolock l(mLock);
266
267        mRequestThread.clear();
268        mStatusTracker.clear();
269
270        if (mHal3Device != NULL) {
271            ATRACE_BEGIN("camera3->close");
272            mHal3Device->common.close(&mHal3Device->common);
273            ATRACE_END();
274            mHal3Device = NULL;
275        }
276
277        mStatus = STATUS_UNINITIALIZED;
278    }
279
280    ALOGV("%s: X", __FUNCTION__);
281    return res;
282}
283
284// For dumping/debugging only -
285// try to acquire a lock a few times, eventually give up to proceed with
286// debug/dump operations
287bool Camera3Device::tryLockSpinRightRound(Mutex& lock) {
288    bool gotLock = false;
289    for (size_t i = 0; i < kDumpLockAttempts; ++i) {
290        if (lock.tryLock() == NO_ERROR) {
291            gotLock = true;
292            break;
293        } else {
294            usleep(kDumpSleepDuration);
295        }
296    }
297    return gotLock;
298}
299
300Camera3Device::Size Camera3Device::getMaxJpegResolution() const {
301    int32_t maxJpegWidth = 0, maxJpegHeight = 0;
302    if (mDeviceVersion >= CAMERA_DEVICE_API_VERSION_3_2) {
303        const int STREAM_CONFIGURATION_SIZE = 4;
304        const int STREAM_FORMAT_OFFSET = 0;
305        const int STREAM_WIDTH_OFFSET = 1;
306        const int STREAM_HEIGHT_OFFSET = 2;
307        const int STREAM_IS_INPUT_OFFSET = 3;
308        camera_metadata_ro_entry_t availableStreamConfigs =
309                mDeviceInfo.find(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS);
310        if (availableStreamConfigs.count == 0 ||
311                availableStreamConfigs.count % STREAM_CONFIGURATION_SIZE != 0) {
312            return Size(0, 0);
313        }
314
315        // Get max jpeg size (area-wise).
316        for (size_t i=0; i < availableStreamConfigs.count; i+= STREAM_CONFIGURATION_SIZE) {
317            int32_t format = availableStreamConfigs.data.i32[i + STREAM_FORMAT_OFFSET];
318            int32_t width = availableStreamConfigs.data.i32[i + STREAM_WIDTH_OFFSET];
319            int32_t height = availableStreamConfigs.data.i32[i + STREAM_HEIGHT_OFFSET];
320            int32_t isInput = availableStreamConfigs.data.i32[i + STREAM_IS_INPUT_OFFSET];
321            if (isInput == ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT
322                    && format == HAL_PIXEL_FORMAT_BLOB &&
323                    (width * height > maxJpegWidth * maxJpegHeight)) {
324                maxJpegWidth = width;
325                maxJpegHeight = height;
326            }
327        }
328    } else {
329        camera_metadata_ro_entry availableJpegSizes =
330                mDeviceInfo.find(ANDROID_SCALER_AVAILABLE_JPEG_SIZES);
331        if (availableJpegSizes.count == 0 || availableJpegSizes.count % 2 != 0) {
332            return Size(0, 0);
333        }
334
335        // Get max jpeg size (area-wise).
336        for (size_t i = 0; i < availableJpegSizes.count; i += 2) {
337            if ((availableJpegSizes.data.i32[i] * availableJpegSizes.data.i32[i + 1])
338                    > (maxJpegWidth * maxJpegHeight)) {
339                maxJpegWidth = availableJpegSizes.data.i32[i];
340                maxJpegHeight = availableJpegSizes.data.i32[i + 1];
341            }
342        }
343    }
344    return Size(maxJpegWidth, maxJpegHeight);
345}
346
347ssize_t Camera3Device::getJpegBufferSize(uint32_t width, uint32_t height) const {
348    // Get max jpeg size (area-wise).
349    Size maxJpegResolution = getMaxJpegResolution();
350    if (maxJpegResolution.width == 0) {
351        ALOGE("%s: Camera %d: Can't find find valid available jpeg sizes in static metadata!",
352                __FUNCTION__, mId);
353        return BAD_VALUE;
354    }
355
356    // Get max jpeg buffer size
357    ssize_t maxJpegBufferSize = 0;
358    camera_metadata_ro_entry jpegBufMaxSize = mDeviceInfo.find(ANDROID_JPEG_MAX_SIZE);
359    if (jpegBufMaxSize.count == 0) {
360        ALOGE("%s: Camera %d: Can't find maximum JPEG size in static metadata!", __FUNCTION__, mId);
361        return BAD_VALUE;
362    }
363    maxJpegBufferSize = jpegBufMaxSize.data.i32[0];
364
365    // Calculate final jpeg buffer size for the given resolution.
366    float scaleFactor = ((float) (width * height)) /
367            (maxJpegResolution.width * maxJpegResolution.height);
368    ssize_t jpegBufferSize = scaleFactor * maxJpegBufferSize;
369    // Bound the buffer size to [MIN_JPEG_BUFFER_SIZE, maxJpegBufferSize].
370    if (jpegBufferSize > maxJpegBufferSize) {
371        jpegBufferSize = maxJpegBufferSize;
372    } else if (jpegBufferSize < kMinJpegBufferSize) {
373        jpegBufferSize = kMinJpegBufferSize;
374    }
375
376    return jpegBufferSize;
377}
378
379status_t Camera3Device::dump(int fd, const Vector<String16> &args) {
380    ATRACE_CALL();
381    (void)args;
382
383    // Try to lock, but continue in case of failure (to avoid blocking in
384    // deadlocks)
385    bool gotInterfaceLock = tryLockSpinRightRound(mInterfaceLock);
386    bool gotLock = tryLockSpinRightRound(mLock);
387
388    ALOGW_IF(!gotInterfaceLock,
389            "Camera %d: %s: Unable to lock interface lock, proceeding anyway",
390            mId, __FUNCTION__);
391    ALOGW_IF(!gotLock,
392            "Camera %d: %s: Unable to lock main lock, proceeding anyway",
393            mId, __FUNCTION__);
394
395    String8 lines;
396
397    const char *status =
398            mStatus == STATUS_ERROR         ? "ERROR" :
399            mStatus == STATUS_UNINITIALIZED ? "UNINITIALIZED" :
400            mStatus == STATUS_UNCONFIGURED  ? "UNCONFIGURED" :
401            mStatus == STATUS_CONFIGURED    ? "CONFIGURED" :
402            mStatus == STATUS_ACTIVE        ? "ACTIVE" :
403            "Unknown";
404
405    lines.appendFormat("    Device status: %s\n", status);
406    if (mStatus == STATUS_ERROR) {
407        lines.appendFormat("    Error cause: %s\n", mErrorCause.string());
408    }
409    lines.appendFormat("    Stream configuration:\n");
410
411    if (mInputStream != NULL) {
412        write(fd, lines.string(), lines.size());
413        mInputStream->dump(fd, args);
414    } else {
415        lines.appendFormat("      No input stream.\n");
416        write(fd, lines.string(), lines.size());
417    }
418    for (size_t i = 0; i < mOutputStreams.size(); i++) {
419        mOutputStreams[i]->dump(fd,args);
420    }
421
422    lines = String8("    In-flight requests:\n");
423    if (mInFlightMap.size() == 0) {
424        lines.append("      None\n");
425    } else {
426        for (size_t i = 0; i < mInFlightMap.size(); i++) {
427            InFlightRequest r = mInFlightMap.valueAt(i);
428            lines.appendFormat("      Frame %d |  Timestamp: %" PRId64 ", metadata"
429                    " arrived: %s, buffers left: %d\n", mInFlightMap.keyAt(i),
430                    r.captureTimestamp, r.haveResultMetadata ? "true" : "false",
431                    r.numBuffersLeft);
432        }
433    }
434    write(fd, lines.string(), lines.size());
435
436    {
437        lines = String8("    Last request sent:\n");
438        write(fd, lines.string(), lines.size());
439
440        CameraMetadata lastRequest = getLatestRequestLocked();
441        lastRequest.dump(fd, /*verbosity*/2, /*indentation*/6);
442    }
443
444    if (mHal3Device != NULL) {
445        lines = String8("    HAL device dump:\n");
446        write(fd, lines.string(), lines.size());
447        mHal3Device->ops->dump(mHal3Device, fd);
448    }
449
450    if (gotLock) mLock.unlock();
451    if (gotInterfaceLock) mInterfaceLock.unlock();
452
453    return OK;
454}
455
456const CameraMetadata& Camera3Device::info() const {
457    ALOGVV("%s: E", __FUNCTION__);
458    if (CC_UNLIKELY(mStatus == STATUS_UNINITIALIZED ||
459                    mStatus == STATUS_ERROR)) {
460        ALOGW("%s: Access to static info %s!", __FUNCTION__,
461                mStatus == STATUS_ERROR ?
462                "when in error state" : "before init");
463    }
464    return mDeviceInfo;
465}
466
467status_t Camera3Device::checkStatusOkToCaptureLocked() {
468    switch (mStatus) {
469        case STATUS_ERROR:
470            CLOGE("Device has encountered a serious error");
471            return INVALID_OPERATION;
472        case STATUS_UNINITIALIZED:
473            CLOGE("Device not initialized");
474            return INVALID_OPERATION;
475        case STATUS_UNCONFIGURED:
476        case STATUS_CONFIGURED:
477        case STATUS_ACTIVE:
478            // OK
479            break;
480        default:
481            SET_ERR_L("Unexpected status: %d", mStatus);
482            return INVALID_OPERATION;
483    }
484    return OK;
485}
486
487status_t Camera3Device::convertMetadataListToRequestListLocked(
488        const List<const CameraMetadata> &metadataList, RequestList *requestList) {
489    if (requestList == NULL) {
490        CLOGE("requestList cannot be NULL.");
491        return BAD_VALUE;
492    }
493
494    int32_t burstId = 0;
495    for (List<const CameraMetadata>::const_iterator it = metadataList.begin();
496            it != metadataList.end(); ++it) {
497        sp<CaptureRequest> newRequest = setUpRequestLocked(*it);
498        if (newRequest == 0) {
499            CLOGE("Can't create capture request");
500            return BAD_VALUE;
501        }
502
503        // Setup burst Id and request Id
504        newRequest->mResultExtras.burstId = burstId++;
505        if (it->exists(ANDROID_REQUEST_ID)) {
506            if (it->find(ANDROID_REQUEST_ID).count == 0) {
507                CLOGE("RequestID entry exists; but must not be empty in metadata");
508                return BAD_VALUE;
509            }
510            newRequest->mResultExtras.requestId = it->find(ANDROID_REQUEST_ID).data.i32[0];
511        } else {
512            CLOGE("RequestID does not exist in metadata");
513            return BAD_VALUE;
514        }
515
516        requestList->push_back(newRequest);
517
518        ALOGV("%s: requestId = %" PRId32, __FUNCTION__, newRequest->mResultExtras.requestId);
519    }
520    return OK;
521}
522
523status_t Camera3Device::capture(CameraMetadata &request, int64_t* /*lastFrameNumber*/) {
524    ATRACE_CALL();
525
526    List<const CameraMetadata> requests;
527    requests.push_back(request);
528    return captureList(requests, /*lastFrameNumber*/NULL);
529}
530
531status_t Camera3Device::submitRequestsHelper(
532        const List<const CameraMetadata> &requests, bool repeating,
533        /*out*/
534        int64_t *lastFrameNumber) {
535    ATRACE_CALL();
536    Mutex::Autolock il(mInterfaceLock);
537    Mutex::Autolock l(mLock);
538
539    status_t res = checkStatusOkToCaptureLocked();
540    if (res != OK) {
541        // error logged by previous call
542        return res;
543    }
544
545    RequestList requestList;
546
547    res = convertMetadataListToRequestListLocked(requests, /*out*/&requestList);
548    if (res != OK) {
549        // error logged by previous call
550        return res;
551    }
552
553    if (repeating) {
554        res = mRequestThread->setRepeatingRequests(requestList, lastFrameNumber);
555    } else {
556        res = mRequestThread->queueRequestList(requestList, lastFrameNumber);
557    }
558
559    if (res == OK) {
560        waitUntilStateThenRelock(/*active*/true, kActiveTimeout);
561        if (res != OK) {
562            SET_ERR_L("Can't transition to active in %f seconds!",
563                    kActiveTimeout/1e9);
564        }
565        ALOGV("Camera %d: Capture request %" PRId32 " enqueued", mId,
566              (*(requestList.begin()))->mResultExtras.requestId);
567    } else {
568        CLOGE("Cannot queue request. Impossible.");
569        return BAD_VALUE;
570    }
571
572    return res;
573}
574
575status_t Camera3Device::captureList(const List<const CameraMetadata> &requests,
576                                    int64_t *lastFrameNumber) {
577    ATRACE_CALL();
578
579    return submitRequestsHelper(requests, /*repeating*/false, lastFrameNumber);
580}
581
582status_t Camera3Device::setStreamingRequest(const CameraMetadata &request,
583                                            int64_t* /*lastFrameNumber*/) {
584    ATRACE_CALL();
585
586    List<const CameraMetadata> requests;
587    requests.push_back(request);
588    return setStreamingRequestList(requests, /*lastFrameNumber*/NULL);
589}
590
591status_t Camera3Device::setStreamingRequestList(const List<const CameraMetadata> &requests,
592                                                int64_t *lastFrameNumber) {
593    ATRACE_CALL();
594
595    return submitRequestsHelper(requests, /*repeating*/true, lastFrameNumber);
596}
597
598sp<Camera3Device::CaptureRequest> Camera3Device::setUpRequestLocked(
599        const CameraMetadata &request) {
600    status_t res;
601
602    if (mStatus == STATUS_UNCONFIGURED || mNeedConfig) {
603        res = configureStreamsLocked();
604        // Stream configuration failed due to unsupported configuration.
605        // Device back to unconfigured state. Client might try other configuraitons
606        if (res == BAD_VALUE && mStatus == STATUS_UNCONFIGURED) {
607            CLOGE("No streams configured");
608            return NULL;
609        }
610        // Stream configuration failed for other reason. Fatal.
611        if (res != OK) {
612            SET_ERR_L("Can't set up streams: %s (%d)", strerror(-res), res);
613            return NULL;
614        }
615        // Stream configuration successfully configure to empty stream configuration.
616        if (mStatus == STATUS_UNCONFIGURED) {
617            CLOGE("No streams configured");
618            return NULL;
619        }
620    }
621
622    sp<CaptureRequest> newRequest = createCaptureRequest(request);
623    return newRequest;
624}
625
626status_t Camera3Device::clearStreamingRequest(int64_t *lastFrameNumber) {
627    ATRACE_CALL();
628    Mutex::Autolock il(mInterfaceLock);
629    Mutex::Autolock l(mLock);
630
631    switch (mStatus) {
632        case STATUS_ERROR:
633            CLOGE("Device has encountered a serious error");
634            return INVALID_OPERATION;
635        case STATUS_UNINITIALIZED:
636            CLOGE("Device not initialized");
637            return INVALID_OPERATION;
638        case STATUS_UNCONFIGURED:
639        case STATUS_CONFIGURED:
640        case STATUS_ACTIVE:
641            // OK
642            break;
643        default:
644            SET_ERR_L("Unexpected status: %d", mStatus);
645            return INVALID_OPERATION;
646    }
647    ALOGV("Camera %d: Clearing repeating request", mId);
648
649    return mRequestThread->clearRepeatingRequests(lastFrameNumber);
650}
651
652status_t Camera3Device::waitUntilRequestReceived(int32_t requestId, nsecs_t timeout) {
653    ATRACE_CALL();
654    Mutex::Autolock il(mInterfaceLock);
655
656    return mRequestThread->waitUntilRequestProcessed(requestId, timeout);
657}
658
659status_t Camera3Device::createInputStream(
660        uint32_t width, uint32_t height, int format, int *id) {
661    ATRACE_CALL();
662    Mutex::Autolock il(mInterfaceLock);
663    Mutex::Autolock l(mLock);
664    ALOGV("Camera %d: Creating new input stream %d: %d x %d, format %d",
665            mId, mNextStreamId, width, height, format);
666
667    status_t res;
668    bool wasActive = false;
669
670    switch (mStatus) {
671        case STATUS_ERROR:
672            ALOGE("%s: Device has encountered a serious error", __FUNCTION__);
673            return INVALID_OPERATION;
674        case STATUS_UNINITIALIZED:
675            ALOGE("%s: Device not initialized", __FUNCTION__);
676            return INVALID_OPERATION;
677        case STATUS_UNCONFIGURED:
678        case STATUS_CONFIGURED:
679            // OK
680            break;
681        case STATUS_ACTIVE:
682            ALOGV("%s: Stopping activity to reconfigure streams", __FUNCTION__);
683            res = internalPauseAndWaitLocked();
684            if (res != OK) {
685                SET_ERR_L("Can't pause captures to reconfigure streams!");
686                return res;
687            }
688            wasActive = true;
689            break;
690        default:
691            SET_ERR_L("%s: Unexpected status: %d", mStatus);
692            return INVALID_OPERATION;
693    }
694    assert(mStatus != STATUS_ACTIVE);
695
696    if (mInputStream != 0) {
697        ALOGE("%s: Cannot create more than 1 input stream", __FUNCTION__);
698        return INVALID_OPERATION;
699    }
700
701    sp<Camera3InputStream> newStream = new Camera3InputStream(mNextStreamId,
702                width, height, format);
703    newStream->setStatusTracker(mStatusTracker);
704
705    mInputStream = newStream;
706
707    *id = mNextStreamId++;
708
709    // Continue captures if active at start
710    if (wasActive) {
711        ALOGV("%s: Restarting activity to reconfigure streams", __FUNCTION__);
712        res = configureStreamsLocked();
713        if (res != OK) {
714            ALOGE("%s: Can't reconfigure device for new stream %d: %s (%d)",
715                    __FUNCTION__, mNextStreamId, strerror(-res), res);
716            return res;
717        }
718        internalResumeLocked();
719    }
720
721    ALOGV("Camera %d: Created input stream", mId);
722    return OK;
723}
724
725
726status_t Camera3Device::createZslStream(
727            uint32_t width, uint32_t height,
728            int depth,
729            /*out*/
730            int *id,
731            sp<Camera3ZslStream>* zslStream) {
732    ATRACE_CALL();
733    Mutex::Autolock il(mInterfaceLock);
734    Mutex::Autolock l(mLock);
735    ALOGV("Camera %d: Creating ZSL stream %d: %d x %d, depth %d",
736            mId, mNextStreamId, width, height, depth);
737
738    status_t res;
739    bool wasActive = false;
740
741    switch (mStatus) {
742        case STATUS_ERROR:
743            ALOGE("%s: Device has encountered a serious error", __FUNCTION__);
744            return INVALID_OPERATION;
745        case STATUS_UNINITIALIZED:
746            ALOGE("%s: Device not initialized", __FUNCTION__);
747            return INVALID_OPERATION;
748        case STATUS_UNCONFIGURED:
749        case STATUS_CONFIGURED:
750            // OK
751            break;
752        case STATUS_ACTIVE:
753            ALOGV("%s: Stopping activity to reconfigure streams", __FUNCTION__);
754            res = internalPauseAndWaitLocked();
755            if (res != OK) {
756                SET_ERR_L("Can't pause captures to reconfigure streams!");
757                return res;
758            }
759            wasActive = true;
760            break;
761        default:
762            SET_ERR_L("Unexpected status: %d", mStatus);
763            return INVALID_OPERATION;
764    }
765    assert(mStatus != STATUS_ACTIVE);
766
767    if (mInputStream != 0) {
768        ALOGE("%s: Cannot create more than 1 input stream", __FUNCTION__);
769        return INVALID_OPERATION;
770    }
771
772    sp<Camera3ZslStream> newStream = new Camera3ZslStream(mNextStreamId,
773                width, height, depth);
774    newStream->setStatusTracker(mStatusTracker);
775
776    res = mOutputStreams.add(mNextStreamId, newStream);
777    if (res < 0) {
778        ALOGE("%s: Can't add new stream to set: %s (%d)",
779                __FUNCTION__, strerror(-res), res);
780        return res;
781    }
782    mInputStream = newStream;
783
784    mNeedConfig = true;
785
786    *id = mNextStreamId++;
787    *zslStream = newStream;
788
789    // Continue captures if active at start
790    if (wasActive) {
791        ALOGV("%s: Restarting activity to reconfigure streams", __FUNCTION__);
792        res = configureStreamsLocked();
793        if (res != OK) {
794            ALOGE("%s: Can't reconfigure device for new stream %d: %s (%d)",
795                    __FUNCTION__, mNextStreamId, strerror(-res), res);
796            return res;
797        }
798        internalResumeLocked();
799    }
800
801    ALOGV("Camera %d: Created ZSL stream", mId);
802    return OK;
803}
804
805status_t Camera3Device::createStream(sp<ANativeWindow> consumer,
806        uint32_t width, uint32_t height, int format, int *id) {
807    ATRACE_CALL();
808    Mutex::Autolock il(mInterfaceLock);
809    Mutex::Autolock l(mLock);
810    ALOGV("Camera %d: Creating new stream %d: %d x %d, format %d",
811            mId, mNextStreamId, width, height, format);
812
813    status_t res;
814    bool wasActive = false;
815
816    switch (mStatus) {
817        case STATUS_ERROR:
818            CLOGE("Device has encountered a serious error");
819            return INVALID_OPERATION;
820        case STATUS_UNINITIALIZED:
821            CLOGE("Device not initialized");
822            return INVALID_OPERATION;
823        case STATUS_UNCONFIGURED:
824        case STATUS_CONFIGURED:
825            // OK
826            break;
827        case STATUS_ACTIVE:
828            ALOGV("%s: Stopping activity to reconfigure streams", __FUNCTION__);
829            res = internalPauseAndWaitLocked();
830            if (res != OK) {
831                SET_ERR_L("Can't pause captures to reconfigure streams!");
832                return res;
833            }
834            wasActive = true;
835            break;
836        default:
837            SET_ERR_L("Unexpected status: %d", mStatus);
838            return INVALID_OPERATION;
839    }
840    assert(mStatus != STATUS_ACTIVE);
841
842    sp<Camera3OutputStream> newStream;
843    if (format == HAL_PIXEL_FORMAT_BLOB) {
844        ssize_t jpegBufferSize = getJpegBufferSize(width, height);
845        if (jpegBufferSize <= 0) {
846            SET_ERR_L("Invalid jpeg buffer size %zd", jpegBufferSize);
847            return BAD_VALUE;
848        }
849
850        newStream = new Camera3OutputStream(mNextStreamId, consumer,
851                width, height, jpegBufferSize, format);
852    } else {
853        newStream = new Camera3OutputStream(mNextStreamId, consumer,
854                width, height, format);
855    }
856    newStream->setStatusTracker(mStatusTracker);
857
858    res = mOutputStreams.add(mNextStreamId, newStream);
859    if (res < 0) {
860        SET_ERR_L("Can't add new stream to set: %s (%d)", strerror(-res), res);
861        return res;
862    }
863
864    *id = mNextStreamId++;
865    mNeedConfig = true;
866
867    // Continue captures if active at start
868    if (wasActive) {
869        ALOGV("%s: Restarting activity to reconfigure streams", __FUNCTION__);
870        res = configureStreamsLocked();
871        if (res != OK) {
872            CLOGE("Can't reconfigure device for new stream %d: %s (%d)",
873                    mNextStreamId, strerror(-res), res);
874            return res;
875        }
876        internalResumeLocked();
877    }
878    ALOGV("Camera %d: Created new stream", mId);
879    return OK;
880}
881
882status_t Camera3Device::createReprocessStreamFromStream(int outputId, int *id) {
883    ATRACE_CALL();
884    (void)outputId; (void)id;
885
886    CLOGE("Unimplemented");
887    return INVALID_OPERATION;
888}
889
890
891status_t Camera3Device::getStreamInfo(int id,
892        uint32_t *width, uint32_t *height, uint32_t *format) {
893    ATRACE_CALL();
894    Mutex::Autolock il(mInterfaceLock);
895    Mutex::Autolock l(mLock);
896
897    switch (mStatus) {
898        case STATUS_ERROR:
899            CLOGE("Device has encountered a serious error");
900            return INVALID_OPERATION;
901        case STATUS_UNINITIALIZED:
902            CLOGE("Device not initialized!");
903            return INVALID_OPERATION;
904        case STATUS_UNCONFIGURED:
905        case STATUS_CONFIGURED:
906        case STATUS_ACTIVE:
907            // OK
908            break;
909        default:
910            SET_ERR_L("Unexpected status: %d", mStatus);
911            return INVALID_OPERATION;
912    }
913
914    ssize_t idx = mOutputStreams.indexOfKey(id);
915    if (idx == NAME_NOT_FOUND) {
916        CLOGE("Stream %d is unknown", id);
917        return idx;
918    }
919
920    if (width) *width  = mOutputStreams[idx]->getWidth();
921    if (height) *height = mOutputStreams[idx]->getHeight();
922    if (format) *format = mOutputStreams[idx]->getFormat();
923
924    return OK;
925}
926
927status_t Camera3Device::setStreamTransform(int id,
928        int transform) {
929    ATRACE_CALL();
930    Mutex::Autolock il(mInterfaceLock);
931    Mutex::Autolock l(mLock);
932
933    switch (mStatus) {
934        case STATUS_ERROR:
935            CLOGE("Device has encountered a serious error");
936            return INVALID_OPERATION;
937        case STATUS_UNINITIALIZED:
938            CLOGE("Device not initialized");
939            return INVALID_OPERATION;
940        case STATUS_UNCONFIGURED:
941        case STATUS_CONFIGURED:
942        case STATUS_ACTIVE:
943            // OK
944            break;
945        default:
946            SET_ERR_L("Unexpected status: %d", mStatus);
947            return INVALID_OPERATION;
948    }
949
950    ssize_t idx = mOutputStreams.indexOfKey(id);
951    if (idx == NAME_NOT_FOUND) {
952        CLOGE("Stream %d does not exist",
953                id);
954        return BAD_VALUE;
955    }
956
957    return mOutputStreams.editValueAt(idx)->setTransform(transform);
958}
959
960status_t Camera3Device::deleteStream(int id) {
961    ATRACE_CALL();
962    Mutex::Autolock il(mInterfaceLock);
963    Mutex::Autolock l(mLock);
964    status_t res;
965
966    ALOGV("%s: Camera %d: Deleting stream %d", __FUNCTION__, mId, id);
967
968    // CameraDevice semantics require device to already be idle before
969    // deleteStream is called, unlike for createStream.
970    if (mStatus == STATUS_ACTIVE) {
971        ALOGV("%s: Camera %d: Device not idle", __FUNCTION__, mId);
972        return -EBUSY;
973    }
974
975    sp<Camera3StreamInterface> deletedStream;
976    ssize_t outputStreamIdx = mOutputStreams.indexOfKey(id);
977    if (mInputStream != NULL && id == mInputStream->getId()) {
978        deletedStream = mInputStream;
979        mInputStream.clear();
980    } else {
981        if (outputStreamIdx == NAME_NOT_FOUND) {
982            CLOGE("Stream %d does not exist", id);
983            return BAD_VALUE;
984        }
985    }
986
987    // Delete output stream or the output part of a bi-directional stream.
988    if (outputStreamIdx != NAME_NOT_FOUND) {
989        deletedStream = mOutputStreams.editValueAt(outputStreamIdx);
990        mOutputStreams.removeItem(id);
991    }
992
993    // Free up the stream endpoint so that it can be used by some other stream
994    res = deletedStream->disconnect();
995    if (res != OK) {
996        SET_ERR_L("Can't disconnect deleted stream %d", id);
997        // fall through since we want to still list the stream as deleted.
998    }
999    mDeletedStreams.add(deletedStream);
1000    mNeedConfig = true;
1001
1002    return res;
1003}
1004
1005status_t Camera3Device::deleteReprocessStream(int id) {
1006    ATRACE_CALL();
1007    (void)id;
1008
1009    CLOGE("Unimplemented");
1010    return INVALID_OPERATION;
1011}
1012
1013status_t Camera3Device::configureStreams() {
1014    ATRACE_CALL();
1015    ALOGV("%s: E", __FUNCTION__);
1016
1017    Mutex::Autolock il(mInterfaceLock);
1018    Mutex::Autolock l(mLock);
1019
1020    return configureStreamsLocked();
1021}
1022
1023status_t Camera3Device::createDefaultRequest(int templateId,
1024        CameraMetadata *request) {
1025    ATRACE_CALL();
1026    ALOGV("%s: for template %d", __FUNCTION__, templateId);
1027    Mutex::Autolock il(mInterfaceLock);
1028    Mutex::Autolock l(mLock);
1029
1030    switch (mStatus) {
1031        case STATUS_ERROR:
1032            CLOGE("Device has encountered a serious error");
1033            return INVALID_OPERATION;
1034        case STATUS_UNINITIALIZED:
1035            CLOGE("Device is not initialized!");
1036            return INVALID_OPERATION;
1037        case STATUS_UNCONFIGURED:
1038        case STATUS_CONFIGURED:
1039        case STATUS_ACTIVE:
1040            // OK
1041            break;
1042        default:
1043            SET_ERR_L("Unexpected status: %d", mStatus);
1044            return INVALID_OPERATION;
1045    }
1046
1047    const camera_metadata_t *rawRequest;
1048    ATRACE_BEGIN("camera3->construct_default_request_settings");
1049    rawRequest = mHal3Device->ops->construct_default_request_settings(
1050        mHal3Device, templateId);
1051    ATRACE_END();
1052    if (rawRequest == NULL) {
1053        SET_ERR_L("HAL is unable to construct default settings for template %d",
1054                templateId);
1055        return DEAD_OBJECT;
1056    }
1057    *request = rawRequest;
1058
1059    return OK;
1060}
1061
1062status_t Camera3Device::waitUntilDrained() {
1063    ATRACE_CALL();
1064    Mutex::Autolock il(mInterfaceLock);
1065    Mutex::Autolock l(mLock);
1066
1067    return waitUntilDrainedLocked();
1068}
1069
1070status_t Camera3Device::waitUntilDrainedLocked() {
1071    switch (mStatus) {
1072        case STATUS_UNINITIALIZED:
1073        case STATUS_UNCONFIGURED:
1074            ALOGV("%s: Already idle", __FUNCTION__);
1075            return OK;
1076        case STATUS_CONFIGURED:
1077            // To avoid race conditions, check with tracker to be sure
1078        case STATUS_ERROR:
1079        case STATUS_ACTIVE:
1080            // Need to verify shut down
1081            break;
1082        default:
1083            SET_ERR_L("Unexpected status: %d",mStatus);
1084            return INVALID_OPERATION;
1085    }
1086
1087    ALOGV("%s: Camera %d: Waiting until idle", __FUNCTION__, mId);
1088    status_t res = waitUntilStateThenRelock(/*active*/ false, kShutdownTimeout);
1089    if (res != OK) {
1090        SET_ERR_L("Error waiting for HAL to drain: %s (%d)", strerror(-res),
1091                res);
1092    }
1093    return res;
1094}
1095
1096// Pause to reconfigure
1097status_t Camera3Device::internalPauseAndWaitLocked() {
1098    mRequestThread->setPaused(true);
1099    mPauseStateNotify = true;
1100
1101    ALOGV("%s: Camera %d: Internal wait until idle", __FUNCTION__, mId);
1102    status_t res = waitUntilStateThenRelock(/*active*/ false, kShutdownTimeout);
1103    if (res != OK) {
1104        SET_ERR_L("Can't idle device in %f seconds!",
1105                kShutdownTimeout/1e9);
1106    }
1107
1108    return res;
1109}
1110
1111// Resume after internalPauseAndWaitLocked
1112status_t Camera3Device::internalResumeLocked() {
1113    status_t res;
1114
1115    mRequestThread->setPaused(false);
1116
1117    res = waitUntilStateThenRelock(/*active*/ true, kActiveTimeout);
1118    if (res != OK) {
1119        SET_ERR_L("Can't transition to active in %f seconds!",
1120                kActiveTimeout/1e9);
1121    }
1122    mPauseStateNotify = false;
1123    return OK;
1124}
1125
1126status_t Camera3Device::waitUntilStateThenRelock(bool active,
1127        nsecs_t timeout) {
1128    status_t res = OK;
1129    if (active == (mStatus == STATUS_ACTIVE)) {
1130        // Desired state already reached
1131        return res;
1132    }
1133
1134    bool stateSeen = false;
1135    do {
1136        mRecentStatusUpdates.clear();
1137
1138        res = mStatusChanged.waitRelative(mLock, timeout);
1139        if (res != OK) break;
1140
1141        // Check state change history during wait
1142        for (size_t i = 0; i < mRecentStatusUpdates.size(); i++) {
1143            if (active == (mRecentStatusUpdates[i] == STATUS_ACTIVE) ) {
1144                stateSeen = true;
1145                break;
1146            }
1147        }
1148    } while (!stateSeen);
1149
1150    return res;
1151}
1152
1153
1154status_t Camera3Device::setNotifyCallback(NotificationListener *listener) {
1155    ATRACE_CALL();
1156    Mutex::Autolock l(mOutputLock);
1157
1158    if (listener != NULL && mListener != NULL) {
1159        ALOGW("%s: Replacing old callback listener", __FUNCTION__);
1160    }
1161    mListener = listener;
1162    mRequestThread->setNotifyCallback(listener);
1163
1164    return OK;
1165}
1166
1167bool Camera3Device::willNotify3A() {
1168    return false;
1169}
1170
1171status_t Camera3Device::waitForNextFrame(nsecs_t timeout) {
1172    status_t res;
1173    Mutex::Autolock l(mOutputLock);
1174
1175    while (mResultQueue.empty()) {
1176        res = mResultSignal.waitRelative(mOutputLock, timeout);
1177        if (res == TIMED_OUT) {
1178            return res;
1179        } else if (res != OK) {
1180            ALOGW("%s: Camera %d: No frame in %" PRId64 " ns: %s (%d)",
1181                    __FUNCTION__, mId, timeout, strerror(-res), res);
1182            return res;
1183        }
1184    }
1185    return OK;
1186}
1187
1188status_t Camera3Device::getNextResult(CaptureResult *frame) {
1189    ATRACE_CALL();
1190    Mutex::Autolock l(mOutputLock);
1191
1192    if (mResultQueue.empty()) {
1193        return NOT_ENOUGH_DATA;
1194    }
1195
1196    if (frame == NULL) {
1197        ALOGE("%s: argument cannot be NULL", __FUNCTION__);
1198        return BAD_VALUE;
1199    }
1200
1201    CaptureResult &result = *(mResultQueue.begin());
1202    frame->mResultExtras = result.mResultExtras;
1203    frame->mMetadata.acquire(result.mMetadata);
1204    mResultQueue.erase(mResultQueue.begin());
1205
1206    return OK;
1207}
1208
1209status_t Camera3Device::triggerAutofocus(uint32_t id) {
1210    ATRACE_CALL();
1211    Mutex::Autolock il(mInterfaceLock);
1212
1213    ALOGV("%s: Triggering autofocus, id %d", __FUNCTION__, id);
1214    // Mix-in this trigger into the next request and only the next request.
1215    RequestTrigger trigger[] = {
1216        {
1217            ANDROID_CONTROL_AF_TRIGGER,
1218            ANDROID_CONTROL_AF_TRIGGER_START
1219        },
1220        {
1221            ANDROID_CONTROL_AF_TRIGGER_ID,
1222            static_cast<int32_t>(id)
1223        }
1224    };
1225
1226    return mRequestThread->queueTrigger(trigger,
1227                                        sizeof(trigger)/sizeof(trigger[0]));
1228}
1229
1230status_t Camera3Device::triggerCancelAutofocus(uint32_t id) {
1231    ATRACE_CALL();
1232    Mutex::Autolock il(mInterfaceLock);
1233
1234    ALOGV("%s: Triggering cancel autofocus, id %d", __FUNCTION__, id);
1235    // Mix-in this trigger into the next request and only the next request.
1236    RequestTrigger trigger[] = {
1237        {
1238            ANDROID_CONTROL_AF_TRIGGER,
1239            ANDROID_CONTROL_AF_TRIGGER_CANCEL
1240        },
1241        {
1242            ANDROID_CONTROL_AF_TRIGGER_ID,
1243            static_cast<int32_t>(id)
1244        }
1245    };
1246
1247    return mRequestThread->queueTrigger(trigger,
1248                                        sizeof(trigger)/sizeof(trigger[0]));
1249}
1250
1251status_t Camera3Device::triggerPrecaptureMetering(uint32_t id) {
1252    ATRACE_CALL();
1253    Mutex::Autolock il(mInterfaceLock);
1254
1255    ALOGV("%s: Triggering precapture metering, id %d", __FUNCTION__, id);
1256    // Mix-in this trigger into the next request and only the next request.
1257    RequestTrigger trigger[] = {
1258        {
1259            ANDROID_CONTROL_AE_PRECAPTURE_TRIGGER,
1260            ANDROID_CONTROL_AE_PRECAPTURE_TRIGGER_START
1261        },
1262        {
1263            ANDROID_CONTROL_AE_PRECAPTURE_ID,
1264            static_cast<int32_t>(id)
1265        }
1266    };
1267
1268    return mRequestThread->queueTrigger(trigger,
1269                                        sizeof(trigger)/sizeof(trigger[0]));
1270}
1271
1272status_t Camera3Device::pushReprocessBuffer(int reprocessStreamId,
1273        buffer_handle_t *buffer, wp<BufferReleasedListener> listener) {
1274    ATRACE_CALL();
1275    (void)reprocessStreamId; (void)buffer; (void)listener;
1276
1277    CLOGE("Unimplemented");
1278    return INVALID_OPERATION;
1279}
1280
1281status_t Camera3Device::flush(int64_t *frameNumber) {
1282    ATRACE_CALL();
1283    ALOGV("%s: Camera %d: Flushing all requests", __FUNCTION__, mId);
1284    Mutex::Autolock il(mInterfaceLock);
1285
1286    NotificationListener* listener;
1287    {
1288        Mutex::Autolock l(mOutputLock);
1289        listener = mListener;
1290    }
1291
1292    {
1293        Mutex::Autolock l(mLock);
1294        mRequestThread->clear(listener, /*out*/frameNumber);
1295    }
1296
1297    status_t res;
1298    if (mHal3Device->common.version >= CAMERA_DEVICE_API_VERSION_3_1) {
1299        res = mHal3Device->ops->flush(mHal3Device);
1300    } else {
1301        Mutex::Autolock l(mLock);
1302        res = waitUntilDrainedLocked();
1303    }
1304
1305    return res;
1306}
1307
1308uint32_t Camera3Device::getDeviceVersion() {
1309    ATRACE_CALL();
1310    Mutex::Autolock il(mInterfaceLock);
1311    return mDeviceVersion;
1312}
1313
1314/**
1315 * Methods called by subclasses
1316 */
1317
1318void Camera3Device::notifyStatus(bool idle) {
1319    {
1320        // Need mLock to safely update state and synchronize to current
1321        // state of methods in flight.
1322        Mutex::Autolock l(mLock);
1323        // We can get various system-idle notices from the status tracker
1324        // while starting up. Only care about them if we've actually sent
1325        // in some requests recently.
1326        if (mStatus != STATUS_ACTIVE && mStatus != STATUS_CONFIGURED) {
1327            return;
1328        }
1329        ALOGV("%s: Camera %d: Now %s", __FUNCTION__, mId,
1330                idle ? "idle" : "active");
1331        mStatus = idle ? STATUS_CONFIGURED : STATUS_ACTIVE;
1332        mRecentStatusUpdates.add(mStatus);
1333        mStatusChanged.signal();
1334
1335        // Skip notifying listener if we're doing some user-transparent
1336        // state changes
1337        if (mPauseStateNotify) return;
1338    }
1339    NotificationListener *listener;
1340    {
1341        Mutex::Autolock l(mOutputLock);
1342        listener = mListener;
1343    }
1344    if (idle && listener != NULL) {
1345        listener->notifyIdle();
1346    }
1347}
1348
1349/**
1350 * Camera3Device private methods
1351 */
1352
1353sp<Camera3Device::CaptureRequest> Camera3Device::createCaptureRequest(
1354        const CameraMetadata &request) {
1355    ATRACE_CALL();
1356    status_t res;
1357
1358    sp<CaptureRequest> newRequest = new CaptureRequest;
1359    newRequest->mSettings = request;
1360
1361    camera_metadata_entry_t inputStreams =
1362            newRequest->mSettings.find(ANDROID_REQUEST_INPUT_STREAMS);
1363    if (inputStreams.count > 0) {
1364        if (mInputStream == NULL ||
1365                mInputStream->getId() != inputStreams.data.i32[0]) {
1366            CLOGE("Request references unknown input stream %d",
1367                    inputStreams.data.u8[0]);
1368            return NULL;
1369        }
1370        // Lazy completion of stream configuration (allocation/registration)
1371        // on first use
1372        if (mInputStream->isConfiguring()) {
1373            res = mInputStream->finishConfiguration(mHal3Device);
1374            if (res != OK) {
1375                SET_ERR_L("Unable to finish configuring input stream %d:"
1376                        " %s (%d)",
1377                        mInputStream->getId(), strerror(-res), res);
1378                return NULL;
1379            }
1380        }
1381
1382        newRequest->mInputStream = mInputStream;
1383        newRequest->mSettings.erase(ANDROID_REQUEST_INPUT_STREAMS);
1384    }
1385
1386    camera_metadata_entry_t streams =
1387            newRequest->mSettings.find(ANDROID_REQUEST_OUTPUT_STREAMS);
1388    if (streams.count == 0) {
1389        CLOGE("Zero output streams specified!");
1390        return NULL;
1391    }
1392
1393    for (size_t i = 0; i < streams.count; i++) {
1394        int idx = mOutputStreams.indexOfKey(streams.data.i32[i]);
1395        if (idx == NAME_NOT_FOUND) {
1396            CLOGE("Request references unknown stream %d",
1397                    streams.data.u8[i]);
1398            return NULL;
1399        }
1400        sp<Camera3OutputStreamInterface> stream =
1401                mOutputStreams.editValueAt(idx);
1402
1403        // Lazy completion of stream configuration (allocation/registration)
1404        // on first use
1405        if (stream->isConfiguring()) {
1406            res = stream->finishConfiguration(mHal3Device);
1407            if (res != OK) {
1408                SET_ERR_L("Unable to finish configuring stream %d: %s (%d)",
1409                        stream->getId(), strerror(-res), res);
1410                return NULL;
1411            }
1412        }
1413
1414        newRequest->mOutputStreams.push(stream);
1415    }
1416    newRequest->mSettings.erase(ANDROID_REQUEST_OUTPUT_STREAMS);
1417
1418    return newRequest;
1419}
1420
1421status_t Camera3Device::configureStreamsLocked() {
1422    ATRACE_CALL();
1423    status_t res;
1424
1425    if (mStatus != STATUS_UNCONFIGURED && mStatus != STATUS_CONFIGURED) {
1426        CLOGE("Not idle");
1427        return INVALID_OPERATION;
1428    }
1429
1430    if (!mNeedConfig) {
1431        ALOGV("%s: Skipping config, no stream changes", __FUNCTION__);
1432        return OK;
1433    }
1434
1435    // Workaround for device HALv3.2 or older spec bug - zero streams requires
1436    // adding a dummy stream instead.
1437    // TODO: Bug: 17321404 for fixing the HAL spec and removing this workaround.
1438    if (mOutputStreams.size() == 0) {
1439        addDummyStreamLocked();
1440    } else {
1441        tryRemoveDummyStreamLocked();
1442    }
1443
1444    // Start configuring the streams
1445    ALOGV("%s: Camera %d: Starting stream configuration", __FUNCTION__, mId);
1446
1447    camera3_stream_configuration config;
1448
1449    config.num_streams = (mInputStream != NULL) + mOutputStreams.size();
1450
1451    Vector<camera3_stream_t*> streams;
1452    streams.setCapacity(config.num_streams);
1453
1454    if (mInputStream != NULL) {
1455        camera3_stream_t *inputStream;
1456        inputStream = mInputStream->startConfiguration();
1457        if (inputStream == NULL) {
1458            SET_ERR_L("Can't start input stream configuration");
1459            return INVALID_OPERATION;
1460        }
1461        streams.add(inputStream);
1462    }
1463
1464    for (size_t i = 0; i < mOutputStreams.size(); i++) {
1465
1466        // Don't configure bidi streams twice, nor add them twice to the list
1467        if (mOutputStreams[i].get() ==
1468            static_cast<Camera3StreamInterface*>(mInputStream.get())) {
1469
1470            config.num_streams--;
1471            continue;
1472        }
1473
1474        camera3_stream_t *outputStream;
1475        outputStream = mOutputStreams.editValueAt(i)->startConfiguration();
1476        if (outputStream == NULL) {
1477            SET_ERR_L("Can't start output stream configuration");
1478            return INVALID_OPERATION;
1479        }
1480        streams.add(outputStream);
1481    }
1482
1483    config.streams = streams.editArray();
1484
1485    // Do the HAL configuration; will potentially touch stream
1486    // max_buffers, usage, priv fields.
1487    ATRACE_BEGIN("camera3->configure_streams");
1488    res = mHal3Device->ops->configure_streams(mHal3Device, &config);
1489    ATRACE_END();
1490
1491    if (res == BAD_VALUE) {
1492        // HAL rejected this set of streams as unsupported, clean up config
1493        // attempt and return to unconfigured state
1494        if (mInputStream != NULL && mInputStream->isConfiguring()) {
1495            res = mInputStream->cancelConfiguration();
1496            if (res != OK) {
1497                SET_ERR_L("Can't cancel configuring input stream %d: %s (%d)",
1498                        mInputStream->getId(), strerror(-res), res);
1499                return res;
1500            }
1501        }
1502
1503        for (size_t i = 0; i < mOutputStreams.size(); i++) {
1504            sp<Camera3OutputStreamInterface> outputStream =
1505                    mOutputStreams.editValueAt(i);
1506            if (outputStream->isConfiguring()) {
1507                res = outputStream->cancelConfiguration();
1508                if (res != OK) {
1509                    SET_ERR_L(
1510                        "Can't cancel configuring output stream %d: %s (%d)",
1511                        outputStream->getId(), strerror(-res), res);
1512                    return res;
1513                }
1514            }
1515        }
1516
1517        // Return state to that at start of call, so that future configures
1518        // properly clean things up
1519        mStatus = STATUS_UNCONFIGURED;
1520        mNeedConfig = true;
1521
1522        ALOGV("%s: Camera %d: Stream configuration failed", __FUNCTION__, mId);
1523        return BAD_VALUE;
1524    } else if (res != OK) {
1525        // Some other kind of error from configure_streams - this is not
1526        // expected
1527        SET_ERR_L("Unable to configure streams with HAL: %s (%d)",
1528                strerror(-res), res);
1529        return res;
1530    }
1531
1532    // Finish all stream configuration immediately.
1533    // TODO: Try to relax this later back to lazy completion, which should be
1534    // faster
1535
1536    if (mInputStream != NULL && mInputStream->isConfiguring()) {
1537        res = mInputStream->finishConfiguration(mHal3Device);
1538        if (res != OK) {
1539            SET_ERR_L("Can't finish configuring input stream %d: %s (%d)",
1540                    mInputStream->getId(), strerror(-res), res);
1541            return res;
1542        }
1543    }
1544
1545    for (size_t i = 0; i < mOutputStreams.size(); i++) {
1546        sp<Camera3OutputStreamInterface> outputStream =
1547            mOutputStreams.editValueAt(i);
1548        if (outputStream->isConfiguring()) {
1549            res = outputStream->finishConfiguration(mHal3Device);
1550            if (res != OK) {
1551                SET_ERR_L("Can't finish configuring output stream %d: %s (%d)",
1552                        outputStream->getId(), strerror(-res), res);
1553                return res;
1554            }
1555        }
1556    }
1557
1558    // Request thread needs to know to avoid using repeat-last-settings protocol
1559    // across configure_streams() calls
1560    mRequestThread->configurationComplete();
1561
1562    // Update device state
1563
1564    mNeedConfig = false;
1565
1566    if (mDummyStreamId == NO_STREAM) {
1567        mStatus = STATUS_CONFIGURED;
1568    } else {
1569        mStatus = STATUS_UNCONFIGURED;
1570    }
1571
1572    ALOGV("%s: Camera %d: Stream configuration complete", __FUNCTION__, mId);
1573
1574    // tear down the deleted streams after configure streams.
1575    mDeletedStreams.clear();
1576
1577    return OK;
1578}
1579
1580status_t Camera3Device::addDummyStreamLocked() {
1581    ATRACE_CALL();
1582    status_t res;
1583
1584    if (mDummyStreamId != NO_STREAM) {
1585        // Should never be adding a second dummy stream when one is already
1586        // active
1587        SET_ERR_L("%s: Camera %d: A dummy stream already exists!",
1588                __FUNCTION__, mId);
1589        return INVALID_OPERATION;
1590    }
1591
1592    ALOGV("%s: Camera %d: Adding a dummy stream", __FUNCTION__, mId);
1593
1594    sp<Camera3OutputStreamInterface> dummyStream =
1595            new Camera3DummyStream(mNextStreamId);
1596
1597    res = mOutputStreams.add(mNextStreamId, dummyStream);
1598    if (res < 0) {
1599        SET_ERR_L("Can't add dummy stream to set: %s (%d)", strerror(-res), res);
1600        return res;
1601    }
1602
1603    mDummyStreamId = mNextStreamId;
1604    mNextStreamId++;
1605
1606    return OK;
1607}
1608
1609status_t Camera3Device::tryRemoveDummyStreamLocked() {
1610    ATRACE_CALL();
1611    status_t res;
1612
1613    if (mDummyStreamId == NO_STREAM) return OK;
1614    if (mOutputStreams.size() == 1) return OK;
1615
1616    ALOGV("%s: Camera %d: Removing the dummy stream", __FUNCTION__, mId);
1617
1618    // Ok, have a dummy stream and there's at least one other output stream,
1619    // so remove the dummy
1620
1621    sp<Camera3StreamInterface> deletedStream;
1622    ssize_t outputStreamIdx = mOutputStreams.indexOfKey(mDummyStreamId);
1623    if (outputStreamIdx == NAME_NOT_FOUND) {
1624        SET_ERR_L("Dummy stream %d does not appear to exist", mDummyStreamId);
1625        return INVALID_OPERATION;
1626    }
1627
1628    deletedStream = mOutputStreams.editValueAt(outputStreamIdx);
1629    mOutputStreams.removeItemsAt(outputStreamIdx);
1630
1631    // Free up the stream endpoint so that it can be used by some other stream
1632    res = deletedStream->disconnect();
1633    if (res != OK) {
1634        SET_ERR_L("Can't disconnect deleted dummy stream %d", mDummyStreamId);
1635        // fall through since we want to still list the stream as deleted.
1636    }
1637    mDeletedStreams.add(deletedStream);
1638    mDummyStreamId = NO_STREAM;
1639
1640    return res;
1641}
1642
1643void Camera3Device::setErrorState(const char *fmt, ...) {
1644    Mutex::Autolock l(mLock);
1645    va_list args;
1646    va_start(args, fmt);
1647
1648    setErrorStateLockedV(fmt, args);
1649
1650    va_end(args);
1651}
1652
1653void Camera3Device::setErrorStateV(const char *fmt, va_list args) {
1654    Mutex::Autolock l(mLock);
1655    setErrorStateLockedV(fmt, args);
1656}
1657
1658void Camera3Device::setErrorStateLocked(const char *fmt, ...) {
1659    va_list args;
1660    va_start(args, fmt);
1661
1662    setErrorStateLockedV(fmt, args);
1663
1664    va_end(args);
1665}
1666
1667void Camera3Device::setErrorStateLockedV(const char *fmt, va_list args) {
1668    // Print out all error messages to log
1669    String8 errorCause = String8::formatV(fmt, args);
1670    ALOGE("Camera %d: %s", mId, errorCause.string());
1671
1672    // But only do error state transition steps for the first error
1673    if (mStatus == STATUS_ERROR || mStatus == STATUS_UNINITIALIZED) return;
1674
1675    mErrorCause = errorCause;
1676
1677    mRequestThread->setPaused(true);
1678    mStatus = STATUS_ERROR;
1679
1680    // Notify upstream about a device error
1681    if (mListener != NULL) {
1682        mListener->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DEVICE,
1683                CaptureResultExtras());
1684    }
1685
1686    // Save stack trace. View by dumping it later.
1687    CameraTraces::saveTrace();
1688    // TODO: consider adding errorCause and client pid/procname
1689}
1690
1691/**
1692 * In-flight request management
1693 */
1694
1695status_t Camera3Device::registerInFlight(uint32_t frameNumber,
1696        int32_t numBuffers, CaptureResultExtras resultExtras, bool hasInput) {
1697    ATRACE_CALL();
1698    Mutex::Autolock l(mInFlightLock);
1699
1700    ssize_t res;
1701    res = mInFlightMap.add(frameNumber, InFlightRequest(numBuffers, resultExtras, hasInput));
1702    if (res < 0) return res;
1703
1704    return OK;
1705}
1706
1707/**
1708 * Check if all 3A fields are ready, and send off a partial 3A-only result
1709 * to the output frame queue
1710 */
1711bool Camera3Device::processPartial3AResult(
1712        uint32_t frameNumber,
1713        const CameraMetadata& partial, const CaptureResultExtras& resultExtras) {
1714
1715    // Check if all 3A states are present
1716    // The full list of fields is
1717    //   android.control.afMode
1718    //   android.control.awbMode
1719    //   android.control.aeState
1720    //   android.control.awbState
1721    //   android.control.afState
1722    //   android.control.afTriggerID
1723    //   android.control.aePrecaptureID
1724    // TODO: Add android.control.aeMode
1725
1726    bool gotAllStates = true;
1727
1728    uint8_t afMode;
1729    uint8_t awbMode;
1730    uint8_t aeState;
1731    uint8_t afState;
1732    uint8_t awbState;
1733
1734    gotAllStates &= get3AResult(partial, ANDROID_CONTROL_AF_MODE,
1735        &afMode, frameNumber);
1736
1737    gotAllStates &= get3AResult(partial, ANDROID_CONTROL_AWB_MODE,
1738        &awbMode, frameNumber);
1739
1740    gotAllStates &= get3AResult(partial, ANDROID_CONTROL_AE_STATE,
1741        &aeState, frameNumber);
1742
1743    gotAllStates &= get3AResult(partial, ANDROID_CONTROL_AF_STATE,
1744        &afState, frameNumber);
1745
1746    gotAllStates &= get3AResult(partial, ANDROID_CONTROL_AWB_STATE,
1747        &awbState, frameNumber);
1748
1749    if (!gotAllStates) return false;
1750
1751    ALOGVV("%s: Camera %d: Frame %d, Request ID %d: AF mode %d, AWB mode %d, "
1752        "AF state %d, AE state %d, AWB state %d, "
1753        "AF trigger %d, AE precapture trigger %d",
1754        __FUNCTION__, mId, frameNumber, resultExtras.requestId,
1755        afMode, awbMode,
1756        afState, aeState, awbState,
1757        resultExtras.afTriggerId, resultExtras.precaptureTriggerId);
1758
1759    // Got all states, so construct a minimal result to send
1760    // In addition to the above fields, this means adding in
1761    //   android.request.frameCount
1762    //   android.request.requestId
1763    //   android.quirks.partialResult (for HAL version below HAL3.2)
1764
1765    const size_t kMinimal3AResultEntries = 10;
1766
1767    Mutex::Autolock l(mOutputLock);
1768
1769    CaptureResult captureResult;
1770    captureResult.mResultExtras = resultExtras;
1771    captureResult.mMetadata = CameraMetadata(kMinimal3AResultEntries, /*dataCapacity*/ 0);
1772    // TODO: change this to sp<CaptureResult>. This will need other changes, including,
1773    // but not limited to CameraDeviceBase::getNextResult
1774    CaptureResult& min3AResult =
1775            *mResultQueue.insert(mResultQueue.end(), captureResult);
1776
1777    if (!insert3AResult(min3AResult.mMetadata, ANDROID_REQUEST_FRAME_COUNT,
1778            // TODO: This is problematic casting. Need to fix CameraMetadata.
1779            reinterpret_cast<int32_t*>(&frameNumber), frameNumber)) {
1780        return false;
1781    }
1782
1783    int32_t requestId = resultExtras.requestId;
1784    if (!insert3AResult(min3AResult.mMetadata, ANDROID_REQUEST_ID,
1785            &requestId, frameNumber)) {
1786        return false;
1787    }
1788
1789    if (mDeviceVersion < CAMERA_DEVICE_API_VERSION_3_2) {
1790        static const uint8_t partialResult = ANDROID_QUIRKS_PARTIAL_RESULT_PARTIAL;
1791        if (!insert3AResult(min3AResult.mMetadata, ANDROID_QUIRKS_PARTIAL_RESULT,
1792                &partialResult, frameNumber)) {
1793            return false;
1794        }
1795    }
1796
1797    if (!insert3AResult(min3AResult.mMetadata, ANDROID_CONTROL_AF_MODE,
1798            &afMode, frameNumber)) {
1799        return false;
1800    }
1801
1802    if (!insert3AResult(min3AResult.mMetadata, ANDROID_CONTROL_AWB_MODE,
1803            &awbMode, frameNumber)) {
1804        return false;
1805    }
1806
1807    if (!insert3AResult(min3AResult.mMetadata, ANDROID_CONTROL_AE_STATE,
1808            &aeState, frameNumber)) {
1809        return false;
1810    }
1811
1812    if (!insert3AResult(min3AResult.mMetadata, ANDROID_CONTROL_AF_STATE,
1813            &afState, frameNumber)) {
1814        return false;
1815    }
1816
1817    if (!insert3AResult(min3AResult.mMetadata, ANDROID_CONTROL_AWB_STATE,
1818            &awbState, frameNumber)) {
1819        return false;
1820    }
1821
1822    if (!insert3AResult(min3AResult.mMetadata, ANDROID_CONTROL_AF_TRIGGER_ID,
1823            &resultExtras.afTriggerId, frameNumber)) {
1824        return false;
1825    }
1826
1827    if (!insert3AResult(min3AResult.mMetadata, ANDROID_CONTROL_AE_PRECAPTURE_ID,
1828            &resultExtras.precaptureTriggerId, frameNumber)) {
1829        return false;
1830    }
1831
1832    // We only send the aggregated partial when all 3A related metadata are available
1833    // For both API1 and API2.
1834    // TODO: we probably should pass through all partials to API2 unconditionally.
1835    mResultSignal.signal();
1836
1837    return true;
1838}
1839
1840template<typename T>
1841bool Camera3Device::get3AResult(const CameraMetadata& result, int32_t tag,
1842        T* value, uint32_t frameNumber) {
1843    (void) frameNumber;
1844
1845    camera_metadata_ro_entry_t entry;
1846
1847    entry = result.find(tag);
1848    if (entry.count == 0) {
1849        ALOGVV("%s: Camera %d: Frame %d: No %s provided by HAL!", __FUNCTION__,
1850            mId, frameNumber, get_camera_metadata_tag_name(tag));
1851        return false;
1852    }
1853
1854    if (sizeof(T) == sizeof(uint8_t)) {
1855        *value = entry.data.u8[0];
1856    } else if (sizeof(T) == sizeof(int32_t)) {
1857        *value = entry.data.i32[0];
1858    } else {
1859        ALOGE("%s: Unexpected type", __FUNCTION__);
1860        return false;
1861    }
1862    return true;
1863}
1864
1865template<typename T>
1866bool Camera3Device::insert3AResult(CameraMetadata& result, int32_t tag,
1867        const T* value, uint32_t frameNumber) {
1868    if (result.update(tag, value, 1) != NO_ERROR) {
1869        mResultQueue.erase(--mResultQueue.end(), mResultQueue.end());
1870        SET_ERR("Frame %d: Failed to set %s in partial metadata",
1871                frameNumber, get_camera_metadata_tag_name(tag));
1872        return false;
1873    }
1874    return true;
1875}
1876
1877/**
1878 * Camera HAL device callback methods
1879 */
1880
1881void Camera3Device::processCaptureResult(const camera3_capture_result *result) {
1882    ATRACE_CALL();
1883
1884    status_t res;
1885
1886    uint32_t frameNumber = result->frame_number;
1887    if (result->result == NULL && result->num_output_buffers == 0 &&
1888            result->input_buffer == NULL) {
1889        SET_ERR("No result data provided by HAL for frame %d",
1890                frameNumber);
1891        return;
1892    }
1893
1894    // For HAL3.2 or above, If HAL doesn't support partial, it must always set
1895    // partial_result to 1 when metadata is included in this result.
1896    if (!mUsePartialResult &&
1897            mDeviceVersion >= CAMERA_DEVICE_API_VERSION_3_2 &&
1898            result->result != NULL &&
1899            result->partial_result != 1) {
1900        SET_ERR("Result is malformed for frame %d: partial_result %u must be 1"
1901                " if partial result is not supported",
1902                frameNumber, result->partial_result);
1903        return;
1904    }
1905
1906    bool isPartialResult = false;
1907    CameraMetadata collectedPartialResult;
1908    CaptureResultExtras resultExtras;
1909    bool hasInputBufferInRequest = false;
1910
1911    // Get capture timestamp and resultExtras from list of in-flight requests,
1912    // where it was added by the shutter notification for this frame.
1913    // Then update the in-flight status and remove the in-flight entry if
1914    // all result data has been received.
1915    nsecs_t timestamp = 0;
1916    {
1917        Mutex::Autolock l(mInFlightLock);
1918        ssize_t idx = mInFlightMap.indexOfKey(frameNumber);
1919        if (idx == NAME_NOT_FOUND) {
1920            SET_ERR("Unknown frame number for capture result: %d",
1921                    frameNumber);
1922            return;
1923        }
1924        InFlightRequest &request = mInFlightMap.editValueAt(idx);
1925        ALOGVV("%s: got InFlightRequest requestId = %" PRId32 ", frameNumber = %" PRId64
1926                ", burstId = %" PRId32,
1927                __FUNCTION__, request.resultExtras.requestId, request.resultExtras.frameNumber,
1928                request.resultExtras.burstId);
1929        // Always update the partial count to the latest one. When framework aggregates adjacent
1930        // partial results into one, the latest partial count will be used.
1931        request.resultExtras.partialResultCount = result->partial_result;
1932
1933        // Check if this result carries only partial metadata
1934        if (mUsePartialResult && result->result != NULL) {
1935            if (mDeviceVersion >= CAMERA_DEVICE_API_VERSION_3_2) {
1936                if (result->partial_result > mNumPartialResults || result->partial_result < 1) {
1937                    SET_ERR("Result is malformed for frame %d: partial_result %u must be  in"
1938                            " the range of [1, %d] when metadata is included in the result",
1939                            frameNumber, result->partial_result, mNumPartialResults);
1940                    return;
1941                }
1942                isPartialResult = (result->partial_result < mNumPartialResults);
1943                if (isPartialResult) {
1944                    request.partialResult.collectedResult.append(result->result);
1945                }
1946            } else {
1947                camera_metadata_ro_entry_t partialResultEntry;
1948                res = find_camera_metadata_ro_entry(result->result,
1949                        ANDROID_QUIRKS_PARTIAL_RESULT, &partialResultEntry);
1950                if (res != NAME_NOT_FOUND &&
1951                        partialResultEntry.count > 0 &&
1952                        partialResultEntry.data.u8[0] ==
1953                        ANDROID_QUIRKS_PARTIAL_RESULT_PARTIAL) {
1954                    // A partial result. Flag this as such, and collect this
1955                    // set of metadata into the in-flight entry.
1956                    isPartialResult = true;
1957                    request.partialResult.collectedResult.append(
1958                        result->result);
1959                    request.partialResult.collectedResult.erase(
1960                        ANDROID_QUIRKS_PARTIAL_RESULT);
1961                }
1962            }
1963
1964            if (isPartialResult) {
1965                // Fire off a 3A-only result if possible
1966                if (!request.partialResult.haveSent3A) {
1967                    request.partialResult.haveSent3A =
1968                            processPartial3AResult(frameNumber,
1969                                    request.partialResult.collectedResult,
1970                                    request.resultExtras);
1971                }
1972            }
1973        }
1974
1975        timestamp = request.captureTimestamp;
1976        resultExtras = request.resultExtras;
1977        hasInputBufferInRequest = request.hasInputBuffer;
1978
1979        /**
1980         * One of the following must happen before it's legal to call process_capture_result,
1981         * unless partial metadata is being provided:
1982         * - CAMERA3_MSG_SHUTTER (expected during normal operation)
1983         * - CAMERA3_MSG_ERROR (expected during flush)
1984         */
1985        if (request.requestStatus == OK && timestamp == 0 && !isPartialResult) {
1986            SET_ERR("Called before shutter notify for frame %d",
1987                    frameNumber);
1988            return;
1989        }
1990
1991        // Did we get the (final) result metadata for this capture?
1992        if (result->result != NULL && !isPartialResult) {
1993            if (request.haveResultMetadata) {
1994                SET_ERR("Called multiple times with metadata for frame %d",
1995                        frameNumber);
1996                return;
1997            }
1998            if (mUsePartialResult &&
1999                    !request.partialResult.collectedResult.isEmpty()) {
2000                collectedPartialResult.acquire(
2001                    request.partialResult.collectedResult);
2002            }
2003            request.haveResultMetadata = true;
2004        }
2005
2006        uint32_t numBuffersReturned = result->num_output_buffers;
2007        if (result->input_buffer != NULL) {
2008            if (hasInputBufferInRequest) {
2009                numBuffersReturned += 1;
2010            } else {
2011                ALOGW("%s: Input buffer should be NULL if there is no input"
2012                        " buffer sent in the request",
2013                        __FUNCTION__);
2014            }
2015        }
2016        request.numBuffersLeft -= numBuffersReturned;
2017        if (request.numBuffersLeft < 0) {
2018            SET_ERR("Too many buffers returned for frame %d",
2019                    frameNumber);
2020            return;
2021        }
2022
2023        // Check if everything has arrived for this result (buffers and metadata), remove it from
2024        // InFlightMap if both arrived or HAL reports error for this request (i.e. during flush).
2025        if ((request.requestStatus != OK) ||
2026                (request.haveResultMetadata && request.numBuffersLeft == 0)) {
2027            ATRACE_ASYNC_END("frame capture", frameNumber);
2028            mInFlightMap.removeItemsAt(idx, 1);
2029        }
2030
2031        // Sanity check - if we have too many in-flight frames, something has
2032        // likely gone wrong
2033        if (mInFlightMap.size() > kInFlightWarnLimit) {
2034            CLOGE("In-flight list too large: %zu", mInFlightMap.size());
2035        }
2036
2037    }
2038
2039    // Process the result metadata, if provided
2040    bool gotResult = false;
2041    if (result->result != NULL && !isPartialResult) {
2042        Mutex::Autolock l(mOutputLock);
2043
2044        gotResult = true;
2045
2046        // TODO: need to track errors for tighter bounds on expected frame number
2047        if (frameNumber < mNextResultFrameNumber) {
2048            SET_ERR("Out-of-order capture result metadata submitted! "
2049                    "(got frame number %d, expecting %d)",
2050                    frameNumber, mNextResultFrameNumber);
2051            return;
2052        }
2053        mNextResultFrameNumber = frameNumber + 1;
2054
2055        CaptureResult captureResult;
2056        captureResult.mResultExtras = resultExtras;
2057        captureResult.mMetadata = result->result;
2058
2059        if (captureResult.mMetadata.update(ANDROID_REQUEST_FRAME_COUNT,
2060                (int32_t*)&frameNumber, 1) != OK) {
2061            SET_ERR("Failed to set frame# in metadata (%d)",
2062                    frameNumber);
2063            gotResult = false;
2064        } else {
2065            ALOGVV("%s: Camera %d: Set frame# in metadata (%d)",
2066                    __FUNCTION__, mId, frameNumber);
2067        }
2068
2069        // Append any previous partials to form a complete result
2070        if (mUsePartialResult && !collectedPartialResult.isEmpty()) {
2071            captureResult.mMetadata.append(collectedPartialResult);
2072        }
2073
2074        captureResult.mMetadata.sort();
2075
2076        // Check that there's a timestamp in the result metadata
2077
2078        camera_metadata_entry entry =
2079                captureResult.mMetadata.find(ANDROID_SENSOR_TIMESTAMP);
2080        if (entry.count == 0) {
2081            SET_ERR("No timestamp provided by HAL for frame %d!",
2082                    frameNumber);
2083            gotResult = false;
2084        } else if (timestamp != entry.data.i64[0]) {
2085            SET_ERR("Timestamp mismatch between shutter notify and result"
2086                    " metadata for frame %d (%" PRId64 " vs %" PRId64 " respectively)",
2087                    frameNumber, timestamp, entry.data.i64[0]);
2088            gotResult = false;
2089        }
2090
2091        if (gotResult) {
2092            // Valid result, insert into queue
2093            List<CaptureResult>::iterator queuedResult =
2094                    mResultQueue.insert(mResultQueue.end(), CaptureResult(captureResult));
2095            ALOGVV("%s: result requestId = %" PRId32 ", frameNumber = %" PRId64
2096                   ", burstId = %" PRId32, __FUNCTION__,
2097                   queuedResult->mResultExtras.requestId,
2098                   queuedResult->mResultExtras.frameNumber,
2099                   queuedResult->mResultExtras.burstId);
2100        }
2101    } // scope for mOutputLock
2102
2103    // Return completed buffers to their streams with the timestamp
2104
2105    for (size_t i = 0; i < result->num_output_buffers; i++) {
2106        Camera3Stream *stream =
2107                Camera3Stream::cast(result->output_buffers[i].stream);
2108        res = stream->returnBuffer(result->output_buffers[i], timestamp);
2109        // Note: stream may be deallocated at this point, if this buffer was the
2110        // last reference to it.
2111        if (res != OK) {
2112            ALOGE("Can't return buffer %zu for frame %d to its stream: "
2113                    " %s (%d)", i, frameNumber, strerror(-res), res);
2114        }
2115    }
2116
2117    if (result->input_buffer != NULL) {
2118        if (hasInputBufferInRequest) {
2119            Camera3Stream *stream =
2120                Camera3Stream::cast(result->input_buffer->stream);
2121            res = stream->returnInputBuffer(*(result->input_buffer));
2122            // Note: stream may be deallocated at this point, if this buffer was the
2123            // last reference to it.
2124            if (res != OK) {
2125                ALOGE("%s: RequestThread: Can't return input buffer for frame %d to"
2126                      "  its stream:%s (%d)",  __FUNCTION__,
2127                      frameNumber, strerror(-res), res);
2128            }
2129        } else {
2130            ALOGW("%s: Input buffer should be NULL if there is no input"
2131                    " buffer sent in the request, skipping input buffer return.",
2132                    __FUNCTION__);
2133        }
2134    }
2135
2136    // Finally, signal any waiters for new frames
2137
2138    if (gotResult) {
2139        mResultSignal.signal();
2140    }
2141
2142}
2143
2144void Camera3Device::notify(const camera3_notify_msg *msg) {
2145    ATRACE_CALL();
2146    NotificationListener *listener;
2147    {
2148        Mutex::Autolock l(mOutputLock);
2149        listener = mListener;
2150    }
2151
2152    if (msg == NULL) {
2153        SET_ERR("HAL sent NULL notify message!");
2154        return;
2155    }
2156
2157    switch (msg->type) {
2158        case CAMERA3_MSG_ERROR: {
2159            notifyError(msg->message.error, listener);
2160            break;
2161        }
2162        case CAMERA3_MSG_SHUTTER: {
2163            notifyShutter(msg->message.shutter, listener);
2164            break;
2165        }
2166        default:
2167            SET_ERR("Unknown notify message from HAL: %d",
2168                    msg->type);
2169    }
2170}
2171
2172void Camera3Device::notifyError(const camera3_error_msg_t &msg,
2173        NotificationListener *listener) {
2174
2175    // Map camera HAL error codes to ICameraDeviceCallback error codes
2176    // Index into this with the HAL error code
2177    static const ICameraDeviceCallbacks::CameraErrorCode
2178            halErrorMap[CAMERA3_MSG_NUM_ERRORS] = {
2179        // 0 = Unused error code
2180        ICameraDeviceCallbacks::ERROR_CAMERA_INVALID_ERROR,
2181        // 1 = CAMERA3_MSG_ERROR_DEVICE
2182        ICameraDeviceCallbacks::ERROR_CAMERA_DEVICE,
2183        // 2 = CAMERA3_MSG_ERROR_REQUEST
2184        ICameraDeviceCallbacks::ERROR_CAMERA_REQUEST,
2185        // 3 = CAMERA3_MSG_ERROR_RESULT
2186        ICameraDeviceCallbacks::ERROR_CAMERA_RESULT,
2187        // 4 = CAMERA3_MSG_ERROR_BUFFER
2188        ICameraDeviceCallbacks::ERROR_CAMERA_BUFFER
2189    };
2190
2191    ICameraDeviceCallbacks::CameraErrorCode errorCode =
2192            ((msg.error_code >= 0) &&
2193                    (msg.error_code < CAMERA3_MSG_NUM_ERRORS)) ?
2194            halErrorMap[msg.error_code] :
2195            ICameraDeviceCallbacks::ERROR_CAMERA_INVALID_ERROR;
2196
2197    int streamId = 0;
2198    if (msg.error_stream != NULL) {
2199        Camera3Stream *stream =
2200                Camera3Stream::cast(msg.error_stream);
2201        streamId = stream->getId();
2202    }
2203    ALOGV("Camera %d: %s: HAL error, frame %d, stream %d: %d",
2204            mId, __FUNCTION__, msg.frame_number,
2205            streamId, msg.error_code);
2206
2207    CaptureResultExtras resultExtras;
2208    switch (errorCode) {
2209        case ICameraDeviceCallbacks::ERROR_CAMERA_DEVICE:
2210            // SET_ERR calls notifyError
2211            SET_ERR("Camera HAL reported serious device error");
2212            break;
2213        case ICameraDeviceCallbacks::ERROR_CAMERA_REQUEST:
2214        case ICameraDeviceCallbacks::ERROR_CAMERA_RESULT:
2215        case ICameraDeviceCallbacks::ERROR_CAMERA_BUFFER:
2216            {
2217                Mutex::Autolock l(mInFlightLock);
2218                ssize_t idx = mInFlightMap.indexOfKey(msg.frame_number);
2219                if (idx >= 0) {
2220                    InFlightRequest &r = mInFlightMap.editValueAt(idx);
2221                    r.requestStatus = msg.error_code;
2222                    resultExtras = r.resultExtras;
2223                } else {
2224                    resultExtras.frameNumber = msg.frame_number;
2225                    ALOGE("Camera %d: %s: cannot find in-flight request on "
2226                            "frame %" PRId64 " error", mId, __FUNCTION__,
2227                            resultExtras.frameNumber);
2228                }
2229            }
2230            if (listener != NULL) {
2231                listener->notifyError(errorCode, resultExtras);
2232            } else {
2233                ALOGE("Camera %d: %s: no listener available", mId, __FUNCTION__);
2234            }
2235            break;
2236        default:
2237            // SET_ERR calls notifyError
2238            SET_ERR("Unknown error message from HAL: %d", msg.error_code);
2239            break;
2240    }
2241}
2242
2243void Camera3Device::notifyShutter(const camera3_shutter_msg_t &msg,
2244        NotificationListener *listener) {
2245    ssize_t idx;
2246    // Verify ordering of shutter notifications
2247    {
2248        Mutex::Autolock l(mOutputLock);
2249        // TODO: need to track errors for tighter bounds on expected frame number.
2250        if (msg.frame_number < mNextShutterFrameNumber) {
2251            SET_ERR("Shutter notification out-of-order. Expected "
2252                    "notification for frame %d, got frame %d",
2253                    mNextShutterFrameNumber, msg.frame_number);
2254            return;
2255        }
2256        mNextShutterFrameNumber = msg.frame_number + 1;
2257    }
2258
2259    CaptureResultExtras resultExtras;
2260
2261    // Set timestamp for the request in the in-flight tracking
2262    // and get the request ID to send upstream
2263    {
2264        Mutex::Autolock l(mInFlightLock);
2265        idx = mInFlightMap.indexOfKey(msg.frame_number);
2266        if (idx >= 0) {
2267            InFlightRequest &r = mInFlightMap.editValueAt(idx);
2268            r.captureTimestamp = msg.timestamp;
2269            resultExtras = r.resultExtras;
2270        }
2271    }
2272    if (idx < 0) {
2273        SET_ERR("Shutter notification for non-existent frame number %d",
2274                msg.frame_number);
2275        return;
2276    }
2277    ALOGVV("Camera %d: %s: Shutter fired for frame %d (id %d) at %" PRId64,
2278            mId, __FUNCTION__,
2279            msg.frame_number, resultExtras.requestId, msg.timestamp);
2280    // Call listener, if any
2281    if (listener != NULL) {
2282        listener->notifyShutter(resultExtras, msg.timestamp);
2283    }
2284}
2285
2286
2287CameraMetadata Camera3Device::getLatestRequestLocked() {
2288    ALOGV("%s", __FUNCTION__);
2289
2290    CameraMetadata retVal;
2291
2292    if (mRequestThread != NULL) {
2293        retVal = mRequestThread->getLatestRequest();
2294    }
2295
2296    return retVal;
2297}
2298
2299
2300/**
2301 * RequestThread inner class methods
2302 */
2303
2304Camera3Device::RequestThread::RequestThread(wp<Camera3Device> parent,
2305        sp<StatusTracker> statusTracker,
2306        camera3_device_t *hal3Device) :
2307        Thread(false),
2308        mParent(parent),
2309        mStatusTracker(statusTracker),
2310        mHal3Device(hal3Device),
2311        mId(getId(parent)),
2312        mReconfigured(false),
2313        mDoPause(false),
2314        mPaused(true),
2315        mFrameNumber(0),
2316        mLatestRequestId(NAME_NOT_FOUND),
2317        mCurrentAfTriggerId(0),
2318        mCurrentPreCaptureTriggerId(0),
2319        mRepeatingLastFrameNumber(NO_IN_FLIGHT_REPEATING_FRAMES) {
2320    mStatusId = statusTracker->addComponent();
2321}
2322
2323void Camera3Device::RequestThread::setNotifyCallback(
2324        NotificationListener *listener) {
2325    Mutex::Autolock l(mRequestLock);
2326    mListener = listener;
2327}
2328
2329void Camera3Device::RequestThread::configurationComplete() {
2330    Mutex::Autolock l(mRequestLock);
2331    mReconfigured = true;
2332}
2333
2334status_t Camera3Device::RequestThread::queueRequestList(
2335        List<sp<CaptureRequest> > &requests,
2336        /*out*/
2337        int64_t *lastFrameNumber) {
2338    Mutex::Autolock l(mRequestLock);
2339    for (List<sp<CaptureRequest> >::iterator it = requests.begin(); it != requests.end();
2340            ++it) {
2341        mRequestQueue.push_back(*it);
2342    }
2343
2344    if (lastFrameNumber != NULL) {
2345        *lastFrameNumber = mFrameNumber + mRequestQueue.size() - 1;
2346        ALOGV("%s: requestId %d, mFrameNumber %" PRId32 ", lastFrameNumber %" PRId64 ".",
2347              __FUNCTION__, (*(requests.begin()))->mResultExtras.requestId, mFrameNumber,
2348              *lastFrameNumber);
2349    }
2350
2351    unpauseForNewRequests();
2352
2353    return OK;
2354}
2355
2356
2357status_t Camera3Device::RequestThread::queueTrigger(
2358        RequestTrigger trigger[],
2359        size_t count) {
2360
2361    Mutex::Autolock l(mTriggerMutex);
2362    status_t ret;
2363
2364    for (size_t i = 0; i < count; ++i) {
2365        ret = queueTriggerLocked(trigger[i]);
2366
2367        if (ret != OK) {
2368            return ret;
2369        }
2370    }
2371
2372    return OK;
2373}
2374
2375int Camera3Device::RequestThread::getId(const wp<Camera3Device> &device) {
2376    sp<Camera3Device> d = device.promote();
2377    if (d != NULL) return d->mId;
2378    return 0;
2379}
2380
2381status_t Camera3Device::RequestThread::queueTriggerLocked(
2382        RequestTrigger trigger) {
2383
2384    uint32_t tag = trigger.metadataTag;
2385    ssize_t index = mTriggerMap.indexOfKey(tag);
2386
2387    switch (trigger.getTagType()) {
2388        case TYPE_BYTE:
2389        // fall-through
2390        case TYPE_INT32:
2391            break;
2392        default:
2393            ALOGE("%s: Type not supported: 0x%x", __FUNCTION__,
2394                    trigger.getTagType());
2395            return INVALID_OPERATION;
2396    }
2397
2398    /**
2399     * Collect only the latest trigger, since we only have 1 field
2400     * in the request settings per trigger tag, and can't send more than 1
2401     * trigger per request.
2402     */
2403    if (index != NAME_NOT_FOUND) {
2404        mTriggerMap.editValueAt(index) = trigger;
2405    } else {
2406        mTriggerMap.add(tag, trigger);
2407    }
2408
2409    return OK;
2410}
2411
2412status_t Camera3Device::RequestThread::setRepeatingRequests(
2413        const RequestList &requests,
2414        /*out*/
2415        int64_t *lastFrameNumber) {
2416    Mutex::Autolock l(mRequestLock);
2417    if (lastFrameNumber != NULL) {
2418        *lastFrameNumber = mRepeatingLastFrameNumber;
2419    }
2420    mRepeatingRequests.clear();
2421    mRepeatingRequests.insert(mRepeatingRequests.begin(),
2422            requests.begin(), requests.end());
2423
2424    unpauseForNewRequests();
2425
2426    mRepeatingLastFrameNumber = NO_IN_FLIGHT_REPEATING_FRAMES;
2427    return OK;
2428}
2429
2430bool Camera3Device::RequestThread::isRepeatingRequestLocked(const sp<CaptureRequest> requestIn) {
2431    if (mRepeatingRequests.empty()) {
2432        return false;
2433    }
2434    int32_t requestId = requestIn->mResultExtras.requestId;
2435    const RequestList &repeatRequests = mRepeatingRequests;
2436    // All repeating requests are guaranteed to have same id so only check first quest
2437    const sp<CaptureRequest> firstRequest = *repeatRequests.begin();
2438    return (firstRequest->mResultExtras.requestId == requestId);
2439}
2440
2441status_t Camera3Device::RequestThread::clearRepeatingRequests(/*out*/int64_t *lastFrameNumber) {
2442    Mutex::Autolock l(mRequestLock);
2443    mRepeatingRequests.clear();
2444    if (lastFrameNumber != NULL) {
2445        *lastFrameNumber = mRepeatingLastFrameNumber;
2446    }
2447    mRepeatingLastFrameNumber = NO_IN_FLIGHT_REPEATING_FRAMES;
2448    return OK;
2449}
2450
2451status_t Camera3Device::RequestThread::clear(
2452        NotificationListener *listener,
2453        /*out*/int64_t *lastFrameNumber) {
2454    Mutex::Autolock l(mRequestLock);
2455    ALOGV("RequestThread::%s:", __FUNCTION__);
2456
2457    mRepeatingRequests.clear();
2458
2459    // Send errors for all requests pending in the request queue, including
2460    // pending repeating requests
2461    if (listener != NULL) {
2462        for (RequestList::iterator it = mRequestQueue.begin();
2463                 it != mRequestQueue.end(); ++it) {
2464            // Set the frame number this request would have had, if it
2465            // had been submitted; this frame number will not be reused.
2466            // The requestId and burstId fields were set when the request was
2467            // submitted originally (in convertMetadataListToRequestListLocked)
2468            (*it)->mResultExtras.frameNumber = mFrameNumber++;
2469            listener->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_REQUEST,
2470                    (*it)->mResultExtras);
2471        }
2472    }
2473    mRequestQueue.clear();
2474    mTriggerMap.clear();
2475    if (lastFrameNumber != NULL) {
2476        *lastFrameNumber = mRepeatingLastFrameNumber;
2477    }
2478    mRepeatingLastFrameNumber = NO_IN_FLIGHT_REPEATING_FRAMES;
2479    return OK;
2480}
2481
2482void Camera3Device::RequestThread::setPaused(bool paused) {
2483    Mutex::Autolock l(mPauseLock);
2484    mDoPause = paused;
2485    mDoPauseSignal.signal();
2486}
2487
2488status_t Camera3Device::RequestThread::waitUntilRequestProcessed(
2489        int32_t requestId, nsecs_t timeout) {
2490    Mutex::Autolock l(mLatestRequestMutex);
2491    status_t res;
2492    while (mLatestRequestId != requestId) {
2493        nsecs_t startTime = systemTime();
2494
2495        res = mLatestRequestSignal.waitRelative(mLatestRequestMutex, timeout);
2496        if (res != OK) return res;
2497
2498        timeout -= (systemTime() - startTime);
2499    }
2500
2501    return OK;
2502}
2503
2504void Camera3Device::RequestThread::requestExit() {
2505    // Call parent to set up shutdown
2506    Thread::requestExit();
2507    // The exit from any possible waits
2508    mDoPauseSignal.signal();
2509    mRequestSignal.signal();
2510}
2511
2512bool Camera3Device::RequestThread::threadLoop() {
2513
2514    status_t res;
2515
2516    // Handle paused state.
2517    if (waitIfPaused()) {
2518        return true;
2519    }
2520
2521    // Get work to do
2522
2523    sp<CaptureRequest> nextRequest = waitForNextRequest();
2524    if (nextRequest == NULL) {
2525        return true;
2526    }
2527
2528    // Create request to HAL
2529    camera3_capture_request_t request = camera3_capture_request_t();
2530    request.frame_number = nextRequest->mResultExtras.frameNumber;
2531    Vector<camera3_stream_buffer_t> outputBuffers;
2532
2533    // Get the request ID, if any
2534    int requestId;
2535    camera_metadata_entry_t requestIdEntry =
2536            nextRequest->mSettings.find(ANDROID_REQUEST_ID);
2537    if (requestIdEntry.count > 0) {
2538        requestId = requestIdEntry.data.i32[0];
2539    } else {
2540        ALOGW("%s: Did not have android.request.id set in the request",
2541                __FUNCTION__);
2542        requestId = NAME_NOT_FOUND;
2543    }
2544
2545    // Insert any queued triggers (before metadata is locked)
2546    int32_t triggerCount;
2547    res = insertTriggers(nextRequest);
2548    if (res < 0) {
2549        SET_ERR("RequestThread: Unable to insert triggers "
2550                "(capture request %d, HAL device: %s (%d)",
2551                request.frame_number, strerror(-res), res);
2552        cleanUpFailedRequest(request, nextRequest, outputBuffers);
2553        return false;
2554    }
2555    triggerCount = res;
2556
2557    bool triggersMixedIn = (triggerCount > 0 || mPrevTriggers > 0);
2558
2559    // If the request is the same as last, or we had triggers last time
2560    if (mPrevRequest != nextRequest || triggersMixedIn) {
2561        /**
2562         * HAL workaround:
2563         * Insert a dummy trigger ID if a trigger is set but no trigger ID is
2564         */
2565        res = addDummyTriggerIds(nextRequest);
2566        if (res != OK) {
2567            SET_ERR("RequestThread: Unable to insert dummy trigger IDs "
2568                    "(capture request %d, HAL device: %s (%d)",
2569                    request.frame_number, strerror(-res), res);
2570            cleanUpFailedRequest(request, nextRequest, outputBuffers);
2571            return false;
2572        }
2573
2574        /**
2575         * The request should be presorted so accesses in HAL
2576         *   are O(logn). Sidenote, sorting a sorted metadata is nop.
2577         */
2578        nextRequest->mSettings.sort();
2579        request.settings = nextRequest->mSettings.getAndLock();
2580        mPrevRequest = nextRequest;
2581        ALOGVV("%s: Request settings are NEW", __FUNCTION__);
2582
2583        IF_ALOGV() {
2584            camera_metadata_ro_entry_t e = camera_metadata_ro_entry_t();
2585            find_camera_metadata_ro_entry(
2586                    request.settings,
2587                    ANDROID_CONTROL_AF_TRIGGER,
2588                    &e
2589            );
2590            if (e.count > 0) {
2591                ALOGV("%s: Request (frame num %d) had AF trigger 0x%x",
2592                      __FUNCTION__,
2593                      request.frame_number,
2594                      e.data.u8[0]);
2595            }
2596        }
2597    } else {
2598        // leave request.settings NULL to indicate 'reuse latest given'
2599        ALOGVV("%s: Request settings are REUSED",
2600               __FUNCTION__);
2601    }
2602
2603    camera3_stream_buffer_t inputBuffer;
2604    uint32_t totalNumBuffers = 0;
2605
2606    // Fill in buffers
2607
2608    if (nextRequest->mInputStream != NULL) {
2609        request.input_buffer = &inputBuffer;
2610        res = nextRequest->mInputStream->getInputBuffer(&inputBuffer);
2611        if (res != OK) {
2612            // Can't get input buffer from gralloc queue - this could be due to
2613            // disconnected queue or other producer misbehavior, so not a fatal
2614            // error
2615            ALOGE("RequestThread: Can't get input buffer, skipping request:"
2616                    " %s (%d)", strerror(-res), res);
2617            Mutex::Autolock l(mRequestLock);
2618            if (mListener != NULL) {
2619                mListener->notifyError(
2620                        ICameraDeviceCallbacks::ERROR_CAMERA_REQUEST,
2621                        nextRequest->mResultExtras);
2622            }
2623            cleanUpFailedRequest(request, nextRequest, outputBuffers);
2624            return true;
2625        }
2626        totalNumBuffers += 1;
2627    } else {
2628        request.input_buffer = NULL;
2629    }
2630
2631    outputBuffers.insertAt(camera3_stream_buffer_t(), 0,
2632            nextRequest->mOutputStreams.size());
2633    request.output_buffers = outputBuffers.array();
2634    for (size_t i = 0; i < nextRequest->mOutputStreams.size(); i++) {
2635        res = nextRequest->mOutputStreams.editItemAt(i)->
2636                getBuffer(&outputBuffers.editItemAt(i));
2637        if (res != OK) {
2638            // Can't get output buffer from gralloc queue - this could be due to
2639            // abandoned queue or other consumer misbehavior, so not a fatal
2640            // error
2641            ALOGE("RequestThread: Can't get output buffer, skipping request:"
2642                    " %s (%d)", strerror(-res), res);
2643            Mutex::Autolock l(mRequestLock);
2644            if (mListener != NULL) {
2645                mListener->notifyError(
2646                        ICameraDeviceCallbacks::ERROR_CAMERA_REQUEST,
2647                        nextRequest->mResultExtras);
2648            }
2649            cleanUpFailedRequest(request, nextRequest, outputBuffers);
2650            return true;
2651        }
2652        request.num_output_buffers++;
2653    }
2654    totalNumBuffers += request.num_output_buffers;
2655
2656    // Log request in the in-flight queue
2657    sp<Camera3Device> parent = mParent.promote();
2658    if (parent == NULL) {
2659        // Should not happen, and nowhere to send errors to, so just log it
2660        CLOGE("RequestThread: Parent is gone");
2661        cleanUpFailedRequest(request, nextRequest, outputBuffers);
2662        return false;
2663    }
2664
2665    res = parent->registerInFlight(request.frame_number,
2666            totalNumBuffers, nextRequest->mResultExtras,
2667            /*hasInput*/request.input_buffer != NULL);
2668    ALOGVV("%s: registered in flight requestId = %" PRId32 ", frameNumber = %" PRId64
2669           ", burstId = %" PRId32 ".",
2670            __FUNCTION__,
2671            nextRequest->mResultExtras.requestId, nextRequest->mResultExtras.frameNumber,
2672            nextRequest->mResultExtras.burstId);
2673    if (res != OK) {
2674        SET_ERR("RequestThread: Unable to register new in-flight request:"
2675                " %s (%d)", strerror(-res), res);
2676        cleanUpFailedRequest(request, nextRequest, outputBuffers);
2677        return false;
2678    }
2679
2680    // Inform waitUntilRequestProcessed thread of a new request ID
2681    {
2682        Mutex::Autolock al(mLatestRequestMutex);
2683
2684        mLatestRequestId = requestId;
2685        mLatestRequestSignal.signal();
2686    }
2687
2688    // Submit request and block until ready for next one
2689    ATRACE_ASYNC_BEGIN("frame capture", request.frame_number);
2690    ATRACE_BEGIN("camera3->process_capture_request");
2691    res = mHal3Device->ops->process_capture_request(mHal3Device, &request);
2692    ATRACE_END();
2693
2694    if (res != OK) {
2695        // Should only get a failure here for malformed requests or device-level
2696        // errors, so consider all errors fatal.  Bad metadata failures should
2697        // come through notify.
2698        SET_ERR("RequestThread: Unable to submit capture request %d to HAL"
2699                " device: %s (%d)", request.frame_number, strerror(-res), res);
2700        cleanUpFailedRequest(request, nextRequest, outputBuffers);
2701        return false;
2702    }
2703
2704    // Update the latest request sent to HAL
2705    if (request.settings != NULL) { // Don't update them if they were unchanged
2706        Mutex::Autolock al(mLatestRequestMutex);
2707
2708        camera_metadata_t* cloned = clone_camera_metadata(request.settings);
2709        mLatestRequest.acquire(cloned);
2710    }
2711
2712    if (request.settings != NULL) {
2713        nextRequest->mSettings.unlock(request.settings);
2714    }
2715
2716    // Remove any previously queued triggers (after unlock)
2717    res = removeTriggers(mPrevRequest);
2718    if (res != OK) {
2719        SET_ERR("RequestThread: Unable to remove triggers "
2720              "(capture request %d, HAL device: %s (%d)",
2721              request.frame_number, strerror(-res), res);
2722        return false;
2723    }
2724    mPrevTriggers = triggerCount;
2725
2726    return true;
2727}
2728
2729CameraMetadata Camera3Device::RequestThread::getLatestRequest() const {
2730    Mutex::Autolock al(mLatestRequestMutex);
2731
2732    ALOGV("RequestThread::%s", __FUNCTION__);
2733
2734    return mLatestRequest;
2735}
2736
2737
2738void Camera3Device::RequestThread::cleanUpFailedRequest(
2739        camera3_capture_request_t &request,
2740        sp<CaptureRequest> &nextRequest,
2741        Vector<camera3_stream_buffer_t> &outputBuffers) {
2742
2743    if (request.settings != NULL) {
2744        nextRequest->mSettings.unlock(request.settings);
2745    }
2746    if (request.input_buffer != NULL) {
2747        request.input_buffer->status = CAMERA3_BUFFER_STATUS_ERROR;
2748        nextRequest->mInputStream->returnInputBuffer(*(request.input_buffer));
2749    }
2750    for (size_t i = 0; i < request.num_output_buffers; i++) {
2751        outputBuffers.editItemAt(i).status = CAMERA3_BUFFER_STATUS_ERROR;
2752        nextRequest->mOutputStreams.editItemAt(i)->returnBuffer(
2753            outputBuffers[i], 0);
2754    }
2755}
2756
2757sp<Camera3Device::CaptureRequest>
2758        Camera3Device::RequestThread::waitForNextRequest() {
2759    status_t res;
2760    sp<CaptureRequest> nextRequest;
2761
2762    // Optimized a bit for the simple steady-state case (single repeating
2763    // request), to avoid putting that request in the queue temporarily.
2764    Mutex::Autolock l(mRequestLock);
2765
2766    while (mRequestQueue.empty()) {
2767        if (!mRepeatingRequests.empty()) {
2768            // Always atomically enqueue all requests in a repeating request
2769            // list. Guarantees a complete in-sequence set of captures to
2770            // application.
2771            const RequestList &requests = mRepeatingRequests;
2772            RequestList::const_iterator firstRequest =
2773                    requests.begin();
2774            nextRequest = *firstRequest;
2775            mRequestQueue.insert(mRequestQueue.end(),
2776                    ++firstRequest,
2777                    requests.end());
2778            // No need to wait any longer
2779
2780            mRepeatingLastFrameNumber = mFrameNumber + requests.size() - 1;
2781
2782            break;
2783        }
2784
2785        res = mRequestSignal.waitRelative(mRequestLock, kRequestTimeout);
2786
2787        if ((mRequestQueue.empty() && mRepeatingRequests.empty()) ||
2788                exitPending()) {
2789            Mutex::Autolock pl(mPauseLock);
2790            if (mPaused == false) {
2791                ALOGV("%s: RequestThread: Going idle", __FUNCTION__);
2792                mPaused = true;
2793                // Let the tracker know
2794                sp<StatusTracker> statusTracker = mStatusTracker.promote();
2795                if (statusTracker != 0) {
2796                    statusTracker->markComponentIdle(mStatusId, Fence::NO_FENCE);
2797                }
2798            }
2799            // Stop waiting for now and let thread management happen
2800            return NULL;
2801        }
2802    }
2803
2804    if (nextRequest == NULL) {
2805        // Don't have a repeating request already in hand, so queue
2806        // must have an entry now.
2807        RequestList::iterator firstRequest =
2808                mRequestQueue.begin();
2809        nextRequest = *firstRequest;
2810        mRequestQueue.erase(firstRequest);
2811    }
2812
2813    // In case we've been unpaused by setPaused clearing mDoPause, need to
2814    // update internal pause state (capture/setRepeatingRequest unpause
2815    // directly).
2816    Mutex::Autolock pl(mPauseLock);
2817    if (mPaused) {
2818        ALOGV("%s: RequestThread: Unpaused", __FUNCTION__);
2819        sp<StatusTracker> statusTracker = mStatusTracker.promote();
2820        if (statusTracker != 0) {
2821            statusTracker->markComponentActive(mStatusId);
2822        }
2823    }
2824    mPaused = false;
2825
2826    // Check if we've reconfigured since last time, and reset the preview
2827    // request if so. Can't use 'NULL request == repeat' across configure calls.
2828    if (mReconfigured) {
2829        mPrevRequest.clear();
2830        mReconfigured = false;
2831    }
2832
2833    if (nextRequest != NULL) {
2834        nextRequest->mResultExtras.frameNumber = mFrameNumber++;
2835        nextRequest->mResultExtras.afTriggerId = mCurrentAfTriggerId;
2836        nextRequest->mResultExtras.precaptureTriggerId = mCurrentPreCaptureTriggerId;
2837    }
2838    return nextRequest;
2839}
2840
2841bool Camera3Device::RequestThread::waitIfPaused() {
2842    status_t res;
2843    Mutex::Autolock l(mPauseLock);
2844    while (mDoPause) {
2845        if (mPaused == false) {
2846            mPaused = true;
2847            ALOGV("%s: RequestThread: Paused", __FUNCTION__);
2848            // Let the tracker know
2849            sp<StatusTracker> statusTracker = mStatusTracker.promote();
2850            if (statusTracker != 0) {
2851                statusTracker->markComponentIdle(mStatusId, Fence::NO_FENCE);
2852            }
2853        }
2854
2855        res = mDoPauseSignal.waitRelative(mPauseLock, kRequestTimeout);
2856        if (res == TIMED_OUT || exitPending()) {
2857            return true;
2858        }
2859    }
2860    // We don't set mPaused to false here, because waitForNextRequest needs
2861    // to further manage the paused state in case of starvation.
2862    return false;
2863}
2864
2865void Camera3Device::RequestThread::unpauseForNewRequests() {
2866    // With work to do, mark thread as unpaused.
2867    // If paused by request (setPaused), don't resume, to avoid
2868    // extra signaling/waiting overhead to waitUntilPaused
2869    mRequestSignal.signal();
2870    Mutex::Autolock p(mPauseLock);
2871    if (!mDoPause) {
2872        ALOGV("%s: RequestThread: Going active", __FUNCTION__);
2873        if (mPaused) {
2874            sp<StatusTracker> statusTracker = mStatusTracker.promote();
2875            if (statusTracker != 0) {
2876                statusTracker->markComponentActive(mStatusId);
2877            }
2878        }
2879        mPaused = false;
2880    }
2881}
2882
2883void Camera3Device::RequestThread::setErrorState(const char *fmt, ...) {
2884    sp<Camera3Device> parent = mParent.promote();
2885    if (parent != NULL) {
2886        va_list args;
2887        va_start(args, fmt);
2888
2889        parent->setErrorStateV(fmt, args);
2890
2891        va_end(args);
2892    }
2893}
2894
2895status_t Camera3Device::RequestThread::insertTriggers(
2896        const sp<CaptureRequest> &request) {
2897
2898    Mutex::Autolock al(mTriggerMutex);
2899
2900    sp<Camera3Device> parent = mParent.promote();
2901    if (parent == NULL) {
2902        CLOGE("RequestThread: Parent is gone");
2903        return DEAD_OBJECT;
2904    }
2905
2906    CameraMetadata &metadata = request->mSettings;
2907    size_t count = mTriggerMap.size();
2908
2909    for (size_t i = 0; i < count; ++i) {
2910        RequestTrigger trigger = mTriggerMap.valueAt(i);
2911        uint32_t tag = trigger.metadataTag;
2912
2913        if (tag == ANDROID_CONTROL_AF_TRIGGER_ID || tag == ANDROID_CONTROL_AE_PRECAPTURE_ID) {
2914            bool isAeTrigger = (trigger.metadataTag == ANDROID_CONTROL_AE_PRECAPTURE_ID);
2915            uint32_t triggerId = static_cast<uint32_t>(trigger.entryValue);
2916            if (isAeTrigger) {
2917                request->mResultExtras.precaptureTriggerId = triggerId;
2918                mCurrentPreCaptureTriggerId = triggerId;
2919            } else {
2920                request->mResultExtras.afTriggerId = triggerId;
2921                mCurrentAfTriggerId = triggerId;
2922            }
2923            if (parent->mDeviceVersion >= CAMERA_DEVICE_API_VERSION_3_2) {
2924                continue; // Trigger ID tag is deprecated since device HAL 3.2
2925            }
2926        }
2927
2928        camera_metadata_entry entry = metadata.find(tag);
2929
2930        if (entry.count > 0) {
2931            /**
2932             * Already has an entry for this trigger in the request.
2933             * Rewrite it with our requested trigger value.
2934             */
2935            RequestTrigger oldTrigger = trigger;
2936
2937            oldTrigger.entryValue = entry.data.u8[0];
2938
2939            mTriggerReplacedMap.add(tag, oldTrigger);
2940        } else {
2941            /**
2942             * More typical, no trigger entry, so we just add it
2943             */
2944            mTriggerRemovedMap.add(tag, trigger);
2945        }
2946
2947        status_t res;
2948
2949        switch (trigger.getTagType()) {
2950            case TYPE_BYTE: {
2951                uint8_t entryValue = static_cast<uint8_t>(trigger.entryValue);
2952                res = metadata.update(tag,
2953                                      &entryValue,
2954                                      /*count*/1);
2955                break;
2956            }
2957            case TYPE_INT32:
2958                res = metadata.update(tag,
2959                                      &trigger.entryValue,
2960                                      /*count*/1);
2961                break;
2962            default:
2963                ALOGE("%s: Type not supported: 0x%x",
2964                      __FUNCTION__,
2965                      trigger.getTagType());
2966                return INVALID_OPERATION;
2967        }
2968
2969        if (res != OK) {
2970            ALOGE("%s: Failed to update request metadata with trigger tag %s"
2971                  ", value %d", __FUNCTION__, trigger.getTagName(),
2972                  trigger.entryValue);
2973            return res;
2974        }
2975
2976        ALOGV("%s: Mixed in trigger %s, value %d", __FUNCTION__,
2977              trigger.getTagName(),
2978              trigger.entryValue);
2979    }
2980
2981    mTriggerMap.clear();
2982
2983    return count;
2984}
2985
2986status_t Camera3Device::RequestThread::removeTriggers(
2987        const sp<CaptureRequest> &request) {
2988    Mutex::Autolock al(mTriggerMutex);
2989
2990    CameraMetadata &metadata = request->mSettings;
2991
2992    /**
2993     * Replace all old entries with their old values.
2994     */
2995    for (size_t i = 0; i < mTriggerReplacedMap.size(); ++i) {
2996        RequestTrigger trigger = mTriggerReplacedMap.valueAt(i);
2997
2998        status_t res;
2999
3000        uint32_t tag = trigger.metadataTag;
3001        switch (trigger.getTagType()) {
3002            case TYPE_BYTE: {
3003                uint8_t entryValue = static_cast<uint8_t>(trigger.entryValue);
3004                res = metadata.update(tag,
3005                                      &entryValue,
3006                                      /*count*/1);
3007                break;
3008            }
3009            case TYPE_INT32:
3010                res = metadata.update(tag,
3011                                      &trigger.entryValue,
3012                                      /*count*/1);
3013                break;
3014            default:
3015                ALOGE("%s: Type not supported: 0x%x",
3016                      __FUNCTION__,
3017                      trigger.getTagType());
3018                return INVALID_OPERATION;
3019        }
3020
3021        if (res != OK) {
3022            ALOGE("%s: Failed to restore request metadata with trigger tag %s"
3023                  ", trigger value %d", __FUNCTION__,
3024                  trigger.getTagName(), trigger.entryValue);
3025            return res;
3026        }
3027    }
3028    mTriggerReplacedMap.clear();
3029
3030    /**
3031     * Remove all new entries.
3032     */
3033    for (size_t i = 0; i < mTriggerRemovedMap.size(); ++i) {
3034        RequestTrigger trigger = mTriggerRemovedMap.valueAt(i);
3035        status_t res = metadata.erase(trigger.metadataTag);
3036
3037        if (res != OK) {
3038            ALOGE("%s: Failed to erase metadata with trigger tag %s"
3039                  ", trigger value %d", __FUNCTION__,
3040                  trigger.getTagName(), trigger.entryValue);
3041            return res;
3042        }
3043    }
3044    mTriggerRemovedMap.clear();
3045
3046    return OK;
3047}
3048
3049status_t Camera3Device::RequestThread::addDummyTriggerIds(
3050        const sp<CaptureRequest> &request) {
3051    // Trigger ID 0 has special meaning in the HAL2 spec, so avoid it here
3052    static const int32_t dummyTriggerId = 1;
3053    status_t res;
3054
3055    CameraMetadata &metadata = request->mSettings;
3056
3057    // If AF trigger is active, insert a dummy AF trigger ID if none already
3058    // exists
3059    camera_metadata_entry afTrigger = metadata.find(ANDROID_CONTROL_AF_TRIGGER);
3060    camera_metadata_entry afId = metadata.find(ANDROID_CONTROL_AF_TRIGGER_ID);
3061    if (afTrigger.count > 0 &&
3062            afTrigger.data.u8[0] != ANDROID_CONTROL_AF_TRIGGER_IDLE &&
3063            afId.count == 0) {
3064        res = metadata.update(ANDROID_CONTROL_AF_TRIGGER_ID, &dummyTriggerId, 1);
3065        if (res != OK) return res;
3066    }
3067
3068    // If AE precapture trigger is active, insert a dummy precapture trigger ID
3069    // if none already exists
3070    camera_metadata_entry pcTrigger =
3071            metadata.find(ANDROID_CONTROL_AE_PRECAPTURE_TRIGGER);
3072    camera_metadata_entry pcId = metadata.find(ANDROID_CONTROL_AE_PRECAPTURE_ID);
3073    if (pcTrigger.count > 0 &&
3074            pcTrigger.data.u8[0] != ANDROID_CONTROL_AE_PRECAPTURE_TRIGGER_IDLE &&
3075            pcId.count == 0) {
3076        res = metadata.update(ANDROID_CONTROL_AE_PRECAPTURE_ID,
3077                &dummyTriggerId, 1);
3078        if (res != OK) return res;
3079    }
3080
3081    return OK;
3082}
3083
3084
3085/**
3086 * Static callback forwarding methods from HAL to instance
3087 */
3088
3089void Camera3Device::sProcessCaptureResult(const camera3_callback_ops *cb,
3090        const camera3_capture_result *result) {
3091    Camera3Device *d =
3092            const_cast<Camera3Device*>(static_cast<const Camera3Device*>(cb));
3093    d->processCaptureResult(result);
3094}
3095
3096void Camera3Device::sNotify(const camera3_callback_ops *cb,
3097        const camera3_notify_msg *msg) {
3098    Camera3Device *d =
3099            const_cast<Camera3Device*>(static_cast<const Camera3Device*>(cb));
3100    d->notify(msg);
3101}
3102
3103}; // namespace android
3104