CameraSource.cpp revision c42478ed7b8a379d2f8a43d4d349680c8a37573f 
1/*
2 * Copyright (C) 2009 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_NDEBUG 0
18#define LOG_TAG "CameraSource"
19#include <utils/Log.h>
20
21#include <OMX_Component.h>
22#include <binder/IPCThreadState.h>
23#include <media/stagefright/CameraSource.h>
24#include <media/stagefright/MediaDebug.h>
25#include <media/stagefright/MediaDefs.h>
26#include <media/stagefright/MediaErrors.h>
27#include <media/stagefright/MetaData.h>
28#include <camera/Camera.h>
29#include <camera/CameraParameters.h>
30#include <surfaceflinger/Surface.h>
31#include <utils/String8.h>
32#include <cutils/properties.h>
33
34namespace android {
35
36struct CameraSourceListener : public CameraListener {
37    CameraSourceListener(const sp<CameraSource> &source);
38
39    virtual void notify(int32_t msgType, int32_t ext1, int32_t ext2);
40    virtual void postData(int32_t msgType, const sp<IMemory> &dataPtr);
41
42    virtual void postDataTimestamp(
43            nsecs_t timestamp, int32_t msgType, const sp<IMemory>& dataPtr);
44
45protected:
46    virtual ~CameraSourceListener();
47
48private:
49    wp<CameraSource> mSource;
50
51    CameraSourceListener(const CameraSourceListener &);
52    CameraSourceListener &operator=(const CameraSourceListener &);
53};
54
55CameraSourceListener::CameraSourceListener(const sp<CameraSource> &source)
56    : mSource(source) {
57}
58
59CameraSourceListener::~CameraSourceListener() {
60}
61
62void CameraSourceListener::notify(int32_t msgType, int32_t ext1, int32_t ext2) {
63    LOGV("notify(%d, %d, %d)", msgType, ext1, ext2);
64}
65
66void CameraSourceListener::postData(int32_t msgType, const sp<IMemory> &dataPtr) {
67    LOGV("postData(%d, ptr:%p, size:%d)",
68         msgType, dataPtr->pointer(), dataPtr->size());
69
70    sp<CameraSource> source = mSource.promote();
71    if (source.get() != NULL) {
72        source->dataCallback(msgType, dataPtr);
73    }
74}
75
76void CameraSourceListener::postDataTimestamp(
77        nsecs_t timestamp, int32_t msgType, const sp<IMemory>& dataPtr) {
78
79    sp<CameraSource> source = mSource.promote();
80    if (source.get() != NULL) {
81        source->dataCallbackTimestamp(timestamp/1000, msgType, dataPtr);
82    }
83}
84
85static int32_t getColorFormat(const char* colorFormat) {
86    if (!strcmp(colorFormat, CameraParameters::PIXEL_FORMAT_YUV420P)) {
87       return OMX_COLOR_FormatYUV420Planar;
88    }
89
90    if (!strcmp(colorFormat, CameraParameters::PIXEL_FORMAT_YUV422SP)) {
91       return OMX_COLOR_FormatYUV422SemiPlanar;
92    }
93
94    if (!strcmp(colorFormat, CameraParameters::PIXEL_FORMAT_YUV420SP)) {
95        return OMX_COLOR_FormatYUV420SemiPlanar;
96    }
97
98    if (!strcmp(colorFormat, CameraParameters::PIXEL_FORMAT_YUV422I)) {
99        return OMX_COLOR_FormatYCbYCr;
100    }
101
102    if (!strcmp(colorFormat, CameraParameters::PIXEL_FORMAT_RGB565)) {
103       return OMX_COLOR_Format16bitRGB565;
104    }
105
106    LOGE("Uknown color format (%s), please add it to "
107         "CameraSource::getColorFormat", colorFormat);
108
109    CHECK_EQ(0, "Unknown color format");
110}
111
112CameraSource *CameraSource::Create() {
113    Size size;
114    size.width = -1;
115    size.height = -1;
116
117    sp<ICamera> camera;
118    return new CameraSource(camera, 0, size, -1, NULL, false);
119}
120
121// static
122CameraSource *CameraSource::CreateFromCamera(
123    const sp<ICamera>& camera,
124    int32_t cameraId,
125    Size videoSize,
126    int32_t frameRate,
127    const sp<Surface>& surface,
128    bool storeMetaDataInVideoBuffers) {
129
130    CameraSource *source = new CameraSource(camera, cameraId,
131                    videoSize, frameRate, surface,
132                    storeMetaDataInVideoBuffers);
133
134    if (source != NULL) {
135        if (source->initCheck() != OK) {
136            delete source;
137            return NULL;
138        }
139    }
140    return source;
141}
142
143CameraSource::CameraSource(
144    const sp<ICamera>& camera,
145    int32_t cameraId,
146    Size videoSize,
147    int32_t frameRate,
148    const sp<Surface>& surface,
149    bool storeMetaDataInVideoBuffers)
150    : mCameraFlags(0),
151      mVideoFrameRate(-1),
152      mCamera(0),
153      mSurface(surface),
154      mNumFramesReceived(0),
155      mLastFrameTimestampUs(0),
156      mStarted(false),
157      mFirstFrameTimeUs(0),
158      mNumFramesEncoded(0),
159      mNumFramesDropped(0),
160      mNumGlitches(0),
161      mGlitchDurationThresholdUs(200000),
162      mCollectStats(false) {
163
164    mVideoSize.width  = -1;
165    mVideoSize.height = -1;
166
167    mInitCheck = init(camera, cameraId,
168                    videoSize, frameRate,
169                    storeMetaDataInVideoBuffers);
170}
171
172status_t CameraSource::initCheck() const {
173    return mInitCheck;
174}
175
176status_t CameraSource::isCameraAvailable(
177    const sp<ICamera>& camera, int32_t cameraId) {
178
179    if (camera == 0) {
180        mCamera = Camera::connect(cameraId);
181        mCameraFlags &= ~FLAGS_HOT_CAMERA;
182    } else {
183        mCamera = Camera::create(camera);
184        mCameraFlags |= FLAGS_HOT_CAMERA;
185    }
186
187    // Is camera available?
188    if (mCamera == 0) {
189        LOGE("Camera connection could not be established.");
190        return -EBUSY;
191    }
192    if (!(mCameraFlags & FLAGS_HOT_CAMERA)) {
193        mCamera->lock();
194    }
195    return OK;
196}
197
198
199/*
200 * Check to see whether the requested video width and height is one
201 * of the supported sizes.
202 * @param width the video frame width in pixels
203 * @param height the video frame height in pixels
204 * @param suppportedSizes the vector of sizes that we check against
205 * @return true if the dimension (width and height) is supported.
206 */
207static bool isVideoSizeSupported(
208    int32_t width, int32_t height,
209    const Vector<Size>& supportedSizes) {
210
211    LOGV("isVideoSizeSupported");
212    for (size_t i = 0; i < supportedSizes.size(); ++i) {
213        if (width  == supportedSizes[i].width &&
214            height == supportedSizes[i].height) {
215            return true;
216        }
217    }
218    return false;
219}
220
221/*
222 * If the preview and video output is separate, we only set the
223 * the video size, and applications should set the preview size
224 * to some proper value, and the recording framework will not
225 * change the preview size; otherwise, if the video and preview
226 * output is the same, we need to set the preview to be the same
227 * as the requested video size.
228 *
229 */
230/*
231 * Query the camera to retrieve the supported video frame sizes
232 * and also to see whether CameraParameters::setVideoSize()
233 * is supported or not.
234 * @param params CameraParameters to retrieve the information
235 * @@param isSetVideoSizeSupported retunrs whether method
236 *      CameraParameters::setVideoSize() is supported or not.
237 * @param sizes returns the vector of Size objects for the
238 *      supported video frame sizes advertised by the camera.
239 */
240static void getSupportedVideoSizes(
241    const CameraParameters& params,
242    bool *isSetVideoSizeSupported,
243    Vector<Size>& sizes) {
244
245    *isSetVideoSizeSupported = true;
246    params.getSupportedVideoSizes(sizes);
247    if (sizes.size() == 0) {
248        LOGD("Camera does not support setVideoSize()");
249        params.getSupportedPreviewSizes(sizes);
250        *isSetVideoSizeSupported = false;
251    }
252}
253
254/*
255 * Check whether the camera has the supported color format
256 * @param params CameraParameters to retrieve the information
257 * @return OK if no error.
258 */
259status_t CameraSource::isCameraColorFormatSupported(
260        const CameraParameters& params) {
261    mColorFormat = getColorFormat(params.get(
262            CameraParameters::KEY_VIDEO_FRAME_FORMAT));
263    if (mColorFormat == -1) {
264        return BAD_VALUE;
265    }
266    return OK;
267}
268
269/*
270 * Configure the camera to use the requested video size
271 * (width and height) and/or frame rate. If both width and
272 * height are -1, configuration on the video size is skipped.
273 * if frameRate is -1, configuration on the frame rate
274 * is skipped. Skipping the configuration allows one to
275 * use the current camera setting without the need to
276 * actually know the specific values (see Create() method).
277 *
278 * @param params the CameraParameters to be configured
279 * @param width the target video frame width in pixels
280 * @param height the target video frame height in pixels
281 * @param frameRate the target frame rate in frames per second.
282 * @return OK if no error.
283 */
284status_t CameraSource::configureCamera(
285        CameraParameters* params,
286        int32_t width, int32_t height,
287        int32_t frameRate) {
288
289    Vector<Size> sizes;
290    bool isSetVideoSizeSupportedByCamera = true;
291    getSupportedVideoSizes(*params, &isSetVideoSizeSupportedByCamera, sizes);
292    bool isCameraParamChanged = false;
293    if (width != -1 && height != -1) {
294        if (!isVideoSizeSupported(width, height, sizes)) {
295            LOGE("Video dimension (%dx%d) is unsupported", width, height);
296            return BAD_VALUE;
297        }
298        if (isSetVideoSizeSupportedByCamera) {
299            params->setVideoSize(width, height);
300        } else {
301            params->setPreviewSize(width, height);
302        }
303        isCameraParamChanged = true;
304    } else if ((width == -1 && height != -1) ||
305               (width != -1 && height == -1)) {
306        // If one and only one of the width and height is -1
307        // we reject such a request.
308        LOGE("Requested video size (%dx%d) is not supported", width, height);
309        return BAD_VALUE;
310    } else {  // width == -1 && height == -1
311        // Do not configure the camera.
312        // Use the current width and height value setting from the camera.
313    }
314
315    if (frameRate != -1) {
316        CHECK(frameRate > 0 && frameRate <= 120);
317        const char* supportedFrameRates =
318                params->get(CameraParameters::KEY_SUPPORTED_PREVIEW_FRAME_RATES);
319        CHECK(supportedFrameRates != NULL);
320        LOGV("Supported frame rates: %s", supportedFrameRates);
321        char buf[4];
322        snprintf(buf, 4, "%d", frameRate);
323        if (strstr(supportedFrameRates, buf) == NULL) {
324            LOGE("Requested frame rate (%d) is not supported: %s",
325                frameRate, supportedFrameRates);
326            return BAD_VALUE;
327        }
328
329        // The frame rate is supported, set the camera to the requested value.
330        params->setPreviewFrameRate(frameRate);
331        isCameraParamChanged = true;
332    } else {  // frameRate == -1
333        // Do not configure the camera.
334        // Use the current frame rate value setting from the camera
335    }
336
337    if (isCameraParamChanged) {
338        // Either frame rate or frame size needs to be changed.
339        String8 s = params->flatten();
340        if (OK != mCamera->setParameters(s)) {
341            LOGE("Could not change settings."
342                 " Someone else is using camera %p?", mCamera.get());
343            return -EBUSY;
344        }
345    }
346    return OK;
347}
348
349/*
350 * Check whether the requested video frame size
351 * has been successfully configured or not. If both width and height
352 * are -1, check on the current width and height value setting
353 * is performed.
354 *
355 * @param params CameraParameters to retrieve the information
356 * @param the target video frame width in pixels to check against
357 * @param the target video frame height in pixels to check against
358 * @return OK if no error
359 */
360status_t CameraSource::checkVideoSize(
361        const CameraParameters& params,
362        int32_t width, int32_t height) {
363
364    // The actual video size is the same as the preview size
365    // if the camera hal does not support separate video and
366    // preview output. In this case, we retrieve the video
367    // size from preview.
368    int32_t frameWidthActual = -1;
369    int32_t frameHeightActual = -1;
370    Vector<Size> sizes;
371    params.getSupportedVideoSizes(sizes);
372    if (sizes.size() == 0) {
373        // video size is the same as preview size
374        params.getPreviewSize(&frameWidthActual, &frameHeightActual);
375    } else {
376        // video size may not be the same as preview
377        params.getVideoSize(&frameWidthActual, &frameHeightActual);
378    }
379    if (frameWidthActual < 0 || frameHeightActual < 0) {
380        LOGE("Failed to retrieve video frame size (%dx%d)",
381                frameWidthActual, frameHeightActual);
382        return UNKNOWN_ERROR;
383    }
384
385    // Check the actual video frame size against the target/requested
386    // video frame size.
387    if (width != -1 && height != -1) {
388        if (frameWidthActual != width || frameHeightActual != height) {
389            LOGE("Failed to set video frame size to %dx%d. "
390                    "The actual video size is %dx%d ", width, height,
391                    frameWidthActual, frameHeightActual);
392            return UNKNOWN_ERROR;
393        }
394    }
395
396    // Good now.
397    mVideoSize.width = frameWidthActual;
398    mVideoSize.height = frameHeightActual;
399    return OK;
400}
401
402/*
403 * Check the requested frame rate has been successfully configured or not.
404 * If the target frameRate is -1, check on the current frame rate value
405 * setting is performed.
406 *
407 * @param params CameraParameters to retrieve the information
408 * @param the target video frame rate to check against
409 * @return OK if no error.
410 */
411status_t CameraSource::checkFrameRate(
412        const CameraParameters& params,
413        int32_t frameRate) {
414
415    int32_t frameRateActual = params.getPreviewFrameRate();
416    if (frameRateActual < 0) {
417        LOGE("Failed to retrieve preview frame rate (%d)", frameRateActual);
418        return UNKNOWN_ERROR;
419    }
420
421    // Check the actual video frame rate against the target/requested
422    // video frame rate.
423    if (frameRate != -1 && (frameRateActual - frameRate) != 0) {
424        LOGE("Failed to set preview frame rate to %d fps. The actual "
425                "frame rate is %d", frameRate, frameRateActual);
426        return UNKNOWN_ERROR;
427    }
428
429    // Good now.
430    mVideoFrameRate = frameRateActual;
431    return OK;
432}
433
434/*
435 * Initialize the CameraSource to so that it becomes
436 * ready for providing the video input streams as requested.
437 * @param camera the camera object used for the video source
438 * @param cameraId if camera == 0, use camera with this id
439 *      as the video source
440 * @param videoSize the target video frame size. If both
441 *      width and height in videoSize is -1, use the current
442 *      width and heigth settings by the camera
443 * @param frameRate the target frame rate in frames per second.
444 *      if it is -1, use the current camera frame rate setting.
445 * @param storeMetaDataInVideoBuffers request to store meta
446 *      data or real YUV data in video buffers. Request to
447 *      store meta data in video buffers may not be honored
448 *      if the source does not support this feature.
449 *
450 * @return OK if no error.
451 */
452status_t CameraSource::init(
453        const sp<ICamera>& camera,
454        int32_t cameraId,
455        Size videoSize,
456        int32_t frameRate,
457        bool storeMetaDataInVideoBuffers) {
458
459    status_t err = OK;
460    int64_t token = IPCThreadState::self()->clearCallingIdentity();
461
462    if ((err  = isCameraAvailable(camera, cameraId)) != OK) {
463        return err;
464    }
465    CameraParameters params(mCamera->getParameters());
466    if ((err = isCameraColorFormatSupported(params)) != OK) {
467        return err;
468    }
469
470    // Set the camera to use the requested video frame size
471    // and/or frame rate.
472    if ((err = configureCamera(&params,
473                    videoSize.width, videoSize.height,
474                    frameRate))) {
475        return err;
476    }
477
478    // Check on video frame size and frame rate.
479    CameraParameters newCameraParams(mCamera->getParameters());
480    if ((err = checkVideoSize(newCameraParams,
481                videoSize.width, videoSize.height)) != OK) {
482        return err;
483    }
484    if ((err = checkFrameRate(newCameraParams, frameRate)) != OK) {
485        return err;
486    }
487
488    // This CHECK is good, since we just passed the lock/unlock
489    // check earlier by calling mCamera->setParameters().
490    CHECK_EQ(OK, mCamera->setPreviewDisplay(mSurface));
491
492    mIsMetaDataStoredInVideoBuffers = false;
493    if (storeMetaDataInVideoBuffers &&
494        OK == mCamera->storeMetaDataInBuffers(true)) {
495        mIsMetaDataStoredInVideoBuffers = true;
496    }
497
498    IPCThreadState::self()->restoreCallingIdentity(token);
499
500    int64_t glitchDurationUs = (1000000LL / mVideoFrameRate);
501    if (glitchDurationUs > mGlitchDurationThresholdUs) {
502        mGlitchDurationThresholdUs = glitchDurationUs;
503    }
504
505    // XXX: query camera for the stride and slice height
506    // when the capability becomes available.
507    mMeta = new MetaData;
508    mMeta->setCString(kKeyMIMEType,  MEDIA_MIMETYPE_VIDEO_RAW);
509    mMeta->setInt32(kKeyColorFormat, mColorFormat);
510    mMeta->setInt32(kKeyWidth,       mVideoSize.width);
511    mMeta->setInt32(kKeyHeight,      mVideoSize.height);
512    mMeta->setInt32(kKeyStride,      mVideoSize.width);
513    mMeta->setInt32(kKeySliceHeight, mVideoSize.height);
514    mMeta->setInt32(kKeyFrameRate,   mVideoFrameRate);
515    return OK;
516}
517
518CameraSource::~CameraSource() {
519    if (mStarted) {
520        stop();
521    }
522}
523
524void CameraSource::startCameraRecording() {
525    CHECK_EQ(OK, mCamera->startRecording());
526    CHECK(mCamera->recordingEnabled());
527}
528
529status_t CameraSource::start(MetaData *meta) {
530    CHECK(!mStarted);
531    if (mInitCheck != OK) {
532        LOGE("CameraSource is not initialized yet");
533        return mInitCheck;
534    }
535
536    char value[PROPERTY_VALUE_MAX];
537    if (property_get("media.stagefright.record-stats", value, NULL)
538        && (!strcmp(value, "1") || !strcasecmp(value, "true"))) {
539        mCollectStats = true;
540    }
541
542    mStartTimeUs = 0;
543    int64_t startTimeUs;
544    if (meta && meta->findInt64(kKeyTime, &startTimeUs)) {
545        mStartTimeUs = startTimeUs;
546    }
547
548    // Call setListener first before calling startCameraRecording()
549    // to avoid recording frames being dropped.
550    int64_t token = IPCThreadState::self()->clearCallingIdentity();
551    mCamera->setListener(new CameraSourceListener(this));
552    startCameraRecording();
553    IPCThreadState::self()->restoreCallingIdentity(token);
554
555    mStarted = true;
556    return OK;
557}
558
559void CameraSource::stopCameraRecording() {
560    mCamera->setListener(NULL);
561    mCamera->stopRecording();
562}
563
564status_t CameraSource::stop() {
565    LOGV("stop");
566    Mutex::Autolock autoLock(mLock);
567    mStarted = false;
568    mFrameAvailableCondition.signal();
569
570    int64_t token = IPCThreadState::self()->clearCallingIdentity();
571    stopCameraRecording();
572    releaseQueuedFrames();
573    while (!mFramesBeingEncoded.empty()) {
574        LOGI("Waiting for outstanding frames being encoded: %d",
575                mFramesBeingEncoded.size());
576        mFrameCompleteCondition.wait(mLock);
577    }
578
579    LOGV("Disconnect camera");
580    if ((mCameraFlags & FLAGS_HOT_CAMERA) == 0) {
581        LOGV("Camera was cold when we started, stopping preview");
582        mCamera->stopPreview();
583    }
584    mCamera->unlock();
585    mCamera.clear();
586    mCamera = 0;
587    mCameraFlags = 0;
588    IPCThreadState::self()->restoreCallingIdentity(token);
589
590    if (mCollectStats) {
591        LOGI("Frames received/encoded/dropped: %d/%d/%d in %lld us",
592                mNumFramesReceived, mNumFramesEncoded, mNumFramesDropped,
593                mLastFrameTimestampUs - mFirstFrameTimeUs);
594    }
595
596    CHECK_EQ(mNumFramesReceived, mNumFramesEncoded + mNumFramesDropped);
597    return OK;
598}
599
600void CameraSource::releaseRecordingFrame(const sp<IMemory>& frame) {
601    mCamera->releaseRecordingFrame(frame);
602}
603
604void CameraSource::releaseQueuedFrames() {
605    List<sp<IMemory> >::iterator it;
606    while (!mFramesReceived.empty()) {
607        it = mFramesReceived.begin();
608        releaseRecordingFrame(*it);
609        mFramesReceived.erase(it);
610        ++mNumFramesDropped;
611    }
612}
613
614sp<MetaData> CameraSource::getFormat() {
615    return mMeta;
616}
617
618void CameraSource::releaseOneRecordingFrame(const sp<IMemory>& frame) {
619    int64_t token = IPCThreadState::self()->clearCallingIdentity();
620    releaseRecordingFrame(frame);
621    IPCThreadState::self()->restoreCallingIdentity(token);
622}
623
624void CameraSource::signalBufferReturned(MediaBuffer *buffer) {
625    LOGV("signalBufferReturned: %p", buffer->data());
626    Mutex::Autolock autoLock(mLock);
627    for (List<sp<IMemory> >::iterator it = mFramesBeingEncoded.begin();
628         it != mFramesBeingEncoded.end(); ++it) {
629        if ((*it)->pointer() ==  buffer->data()) {
630            releaseOneRecordingFrame((*it));
631            mFramesBeingEncoded.erase(it);
632            ++mNumFramesEncoded;
633            buffer->setObserver(0);
634            buffer->release();
635            mFrameCompleteCondition.signal();
636            return;
637        }
638    }
639    CHECK_EQ(0, "signalBufferReturned: bogus buffer");
640}
641
642status_t CameraSource::read(
643        MediaBuffer **buffer, const ReadOptions *options) {
644    LOGV("read");
645
646    *buffer = NULL;
647
648    int64_t seekTimeUs;
649    ReadOptions::SeekMode mode;
650    if (options && options->getSeekTo(&seekTimeUs, &mode)) {
651        return ERROR_UNSUPPORTED;
652    }
653
654    sp<IMemory> frame;
655    int64_t frameTime;
656
657    {
658        Mutex::Autolock autoLock(mLock);
659        while (mStarted) {
660            while(mFramesReceived.empty()) {
661                mFrameAvailableCondition.wait(mLock);
662            }
663
664            if (!mStarted) {
665                return OK;
666            }
667
668            frame = *mFramesReceived.begin();
669            mFramesReceived.erase(mFramesReceived.begin());
670
671            frameTime = *mFrameTimes.begin();
672            mFrameTimes.erase(mFrameTimes.begin());
673            int64_t skipTimeUs;
674            if (!options || !options->getSkipFrame(&skipTimeUs)) {
675                skipTimeUs = frameTime;
676            }
677            if (skipTimeUs > frameTime) {
678                LOGV("skipTimeUs: %lld us > frameTime: %lld us",
679                    skipTimeUs, frameTime);
680                releaseOneRecordingFrame(frame);
681                ++mNumFramesDropped;
682                // Safeguard against the abuse of the kSkipFrame_Option.
683                if (skipTimeUs - frameTime >= 1E6) {
684                    LOGE("Frame skipping requested is way too long: %lld us",
685                        skipTimeUs - frameTime);
686                    return UNKNOWN_ERROR;
687                }
688            } else {
689                mFramesBeingEncoded.push_back(frame);
690                *buffer = new MediaBuffer(frame->pointer(), frame->size());
691                (*buffer)->setObserver(this);
692                (*buffer)->add_ref();
693                (*buffer)->meta_data()->setInt64(kKeyTime, frameTime);
694
695                return OK;
696            }
697        }
698    }
699    return OK;
700}
701
702void CameraSource::dataCallbackTimestamp(int64_t timestampUs,
703        int32_t msgType, const sp<IMemory> &data) {
704    LOGV("dataCallbackTimestamp: timestamp %lld us", timestampUs);
705    Mutex::Autolock autoLock(mLock);
706    if (!mStarted) {
707        releaseOneRecordingFrame(data);
708        ++mNumFramesReceived;
709        ++mNumFramesDropped;
710        return;
711    }
712
713    if (mNumFramesReceived > 0 &&
714        timestampUs - mLastFrameTimestampUs > mGlitchDurationThresholdUs) {
715        if (mNumGlitches % 10 == 0) {  // Don't spam the log
716            LOGW("Long delay detected in video recording");
717        }
718        ++mNumGlitches;
719    }
720
721    // May need to skip frame or modify timestamp. Currently implemented
722    // by the subclass CameraSourceTimeLapse.
723    if(skipCurrentFrame(timestampUs)) {
724        releaseOneRecordingFrame(data);
725        return;
726    }
727
728    mLastFrameTimestampUs = timestampUs;
729    if (mNumFramesReceived == 0) {
730        mFirstFrameTimeUs = timestampUs;
731        // Initial delay
732        if (mStartTimeUs > 0) {
733            if (timestampUs < mStartTimeUs) {
734                // Frame was captured before recording was started
735                // Drop it without updating the statistical data.
736                releaseOneRecordingFrame(data);
737                return;
738            }
739            mStartTimeUs = timestampUs - mStartTimeUs;
740        }
741    }
742    ++mNumFramesReceived;
743
744    mFramesReceived.push_back(data);
745    int64_t timeUs = mStartTimeUs + (timestampUs - mFirstFrameTimeUs);
746    mFrameTimes.push_back(timeUs);
747    LOGV("initial delay: %lld, current time stamp: %lld",
748        mStartTimeUs, timeUs);
749    mFrameAvailableCondition.signal();
750}
751
752size_t CameraSource::getNumberOfVideoBuffers() const {
753    LOGV("getNumberOfVideoBuffers");
754    size_t nBuffers = 0;
755    int64_t token = IPCThreadState::self()->clearCallingIdentity();
756    if (mInitCheck == OK && mCamera != 0) {
757        nBuffers = mCamera->getNumberOfVideoBuffers();
758    }
759    IPCThreadState::self()->restoreCallingIdentity(token);
760    return nBuffers;
761}
762
763sp<IMemory> CameraSource::getVideoBuffer(size_t index) const {
764    LOGV("getVideoBuffer: %d", index);
765    sp<IMemory> buffer = 0;
766    int64_t token = IPCThreadState::self()->clearCallingIdentity();
767    if (mInitCheck == OK && mCamera != 0) {
768        buffer = mCamera->getVideoBuffer(index);
769    }
770    IPCThreadState::self()->restoreCallingIdentity(token);
771    return buffer;
772}
773
774bool CameraSource::isMetaDataStoredInVideoBuffers() const {
775    LOGV("isMetaDataStoredInVideoBuffers");
776    return mIsMetaDataStoredInVideoBuffers;
777}
778
779}  // namespace android
780