CameraSource.cpp revision f96c9d193c70c7216b34e6c65f046a09a2a81f14 
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        params->setPreviewFrameRate(frameRate);
317        isCameraParamChanged = true;
318    } else {  // frameRate == -1
319        // Do not configure the camera.
320        // Use the current frame rate value setting from the camera
321    }
322
323    if (isCameraParamChanged) {
324        // Either frame rate or frame size needs to be changed.
325        String8 s = params->flatten();
326        if (OK != mCamera->setParameters(s)) {
327            LOGE("Could not change settings."
328                 " Someone else is using camera %p?", mCamera.get());
329            return -EBUSY;
330        }
331    }
332    return OK;
333}
334
335/*
336 * Check whether the requested video frame size
337 * has been successfully configured or not. If both width and height
338 * are -1, check on the current width and height value setting
339 * is performed.
340 *
341 * @param params CameraParameters to retrieve the information
342 * @param the target video frame width in pixels to check against
343 * @param the target video frame height in pixels to check against
344 * @return OK if no error
345 */
346status_t CameraSource::checkVideoSize(
347        const CameraParameters& params,
348        int32_t width, int32_t height) {
349
350    // The actual video size is the same as the preview size
351    // if the camera hal does not support separate video and
352    // preview output. In this case, we retrieve the video
353    // size from preview.
354    int32_t frameWidthActual = -1;
355    int32_t frameHeightActual = -1;
356    Vector<Size> sizes;
357    params.getSupportedVideoSizes(sizes);
358    if (sizes.size() == 0) {
359        // video size is the same as preview size
360        params.getPreviewSize(&frameWidthActual, &frameHeightActual);
361    } else {
362        // video size may not be the same as preview
363        params.getVideoSize(&frameWidthActual, &frameHeightActual);
364    }
365    if (frameWidthActual < 0 || frameHeightActual < 0) {
366        LOGE("Failed to retrieve video frame size (%dx%d)",
367                frameWidthActual, frameHeightActual);
368        return UNKNOWN_ERROR;
369    }
370
371    // Check the actual video frame size against the target/requested
372    // video frame size.
373    if (width != -1 && height != -1) {
374        if (frameWidthActual != width || frameHeightActual != height) {
375            LOGE("Failed to set video frame size to %dx%d. "
376                    "The actual video size is %dx%d ", width, height,
377                    frameWidthActual, frameHeightActual);
378            return UNKNOWN_ERROR;
379        }
380    }
381
382    // Good now.
383    mVideoSize.width = frameWidthActual;
384    mVideoSize.height = frameHeightActual;
385    return OK;
386}
387
388/*
389 * Check the requested frame rate has been successfully configured or not.
390 * If the target frameRate is -1, check on the current frame rate value
391 * setting is performed.
392 *
393 * @param params CameraParameters to retrieve the information
394 * @param the target video frame rate to check against
395 * @return OK if no error.
396 */
397status_t CameraSource::checkFrameRate(
398        const CameraParameters& params,
399        int32_t frameRate) {
400
401    int32_t frameRateActual = params.getPreviewFrameRate();
402    if (frameRateActual < 0) {
403        LOGE("Failed to retrieve preview frame rate (%d)", frameRateActual);
404        return UNKNOWN_ERROR;
405    }
406
407    // Check the actual video frame rate against the target/requested
408    // video frame rate.
409    if (frameRate != -1 && (frameRateActual - frameRate) != 0) {
410        LOGE("Failed to set preview frame rate to %d fps. The actual "
411                "frame rate is %d", frameRate, frameRateActual);
412        return UNKNOWN_ERROR;
413    }
414
415    // Good now.
416    mVideoFrameRate = frameRateActual;
417    return OK;
418}
419
420/*
421 * Initialize the CameraSource to so that it becomes
422 * ready for providing the video input streams as requested.
423 * @param camera the camera object used for the video source
424 * @param cameraId if camera == 0, use camera with this id
425 *      as the video source
426 * @param videoSize the target video frame size. If both
427 *      width and height in videoSize is -1, use the current
428 *      width and heigth settings by the camera
429 * @param frameRate the target frame rate in frames per second.
430 *      if it is -1, use the current camera frame rate setting.
431 * @param storeMetaDataInVideoBuffers request to store meta
432 *      data or real YUV data in video buffers. Request to
433 *      store meta data in video buffers may not be honored
434 *      if the source does not support this feature.
435 *
436 * @return OK if no error.
437 */
438status_t CameraSource::init(
439        const sp<ICamera>& camera,
440        int32_t cameraId,
441        Size videoSize,
442        int32_t frameRate,
443        bool storeMetaDataInVideoBuffers) {
444
445    status_t err = OK;
446    int64_t token = IPCThreadState::self()->clearCallingIdentity();
447
448    if ((err  = isCameraAvailable(camera, cameraId)) != OK) {
449        return err;
450    }
451    CameraParameters params(mCamera->getParameters());
452    if ((err = isCameraColorFormatSupported(params)) != OK) {
453        return err;
454    }
455
456    // Set the camera to use the requested video frame size
457    // and/or frame rate.
458    if ((err = configureCamera(&params,
459                    videoSize.width, videoSize.height,
460                    frameRate))) {
461        return err;
462    }
463
464    // Check on video frame size and frame rate.
465    CameraParameters newCameraParams(mCamera->getParameters());
466    if ((err = checkVideoSize(newCameraParams,
467                videoSize.width, videoSize.height)) != OK) {
468        return err;
469    }
470    if ((err = checkFrameRate(newCameraParams, frameRate)) != OK) {
471        return err;
472    }
473
474    // This CHECK is good, since we just passed the lock/unlock
475    // check earlier by calling mCamera->setParameters().
476    CHECK_EQ(OK, mCamera->setPreviewDisplay(mSurface));
477
478    mIsMetaDataStoredInVideoBuffers = false;
479    if (storeMetaDataInVideoBuffers &&
480        OK == mCamera->storeMetaDataInBuffers(true)) {
481        mIsMetaDataStoredInVideoBuffers = true;
482    }
483
484    /*
485     * mCamera->startRecording() signals camera hal to make
486     * available the video buffers (for instance, allocation
487     * of the video buffers may be triggered when camera hal's
488     * startRecording() method is called). Making available these
489     * video buffers earlier (before calling start()) is critical,
490     * if one wants to configure omx video encoders to use these
491     * buffers for passing video frame data during video recording
492     * without the need to memcpy the video frame data stored
493     * in these buffers. Eliminating memcpy for video frame data
494     * is crucial in performance for HD quality video recording
495     * applications.
496     *
497     * Based on OMX IL spec, configuring the omx video encoders
498     * must occur in loaded state. When start() is called, omx
499     * video encoders are already in idle state, which is too
500     * late. Thus, we must call mCamera->startRecording() earlier.
501     */
502    startCameraRecording();
503
504    IPCThreadState::self()->restoreCallingIdentity(token);
505
506    int64_t glitchDurationUs = (1000000LL / mVideoFrameRate);
507    if (glitchDurationUs > mGlitchDurationThresholdUs) {
508        mGlitchDurationThresholdUs = glitchDurationUs;
509    }
510
511    // XXX: query camera for the stride and slice height
512    // when the capability becomes available.
513    mMeta = new MetaData;
514    mMeta->setCString(kKeyMIMEType,  MEDIA_MIMETYPE_VIDEO_RAW);
515    mMeta->setInt32(kKeyColorFormat, mColorFormat);
516    mMeta->setInt32(kKeyWidth,       mVideoSize.width);
517    mMeta->setInt32(kKeyHeight,      mVideoSize.height);
518    mMeta->setInt32(kKeyStride,      mVideoSize.width);
519    mMeta->setInt32(kKeySliceHeight, mVideoSize.height);
520    return OK;
521}
522
523CameraSource::~CameraSource() {
524    if (mStarted) {
525        stop();
526    }
527}
528
529void CameraSource::startCameraRecording() {
530    CHECK_EQ(OK, mCamera->startRecording());
531    CHECK(mCamera->recordingEnabled());
532}
533
534status_t CameraSource::start(MetaData *meta) {
535    CHECK(!mStarted);
536    if (mInitCheck != OK) {
537        LOGE("CameraSource is not initialized yet");
538        return mInitCheck;
539    }
540
541    char value[PROPERTY_VALUE_MAX];
542    if (property_get("media.stagefright.record-stats", value, NULL)
543        && (!strcmp(value, "1") || !strcasecmp(value, "true"))) {
544        mCollectStats = true;
545    }
546
547    mStartTimeUs = 0;
548    int64_t startTimeUs;
549    if (meta && meta->findInt64(kKeyTime, &startTimeUs)) {
550        mStartTimeUs = startTimeUs;
551    }
552
553    int64_t token = IPCThreadState::self()->clearCallingIdentity();
554    mCamera->setListener(new CameraSourceListener(this));
555    IPCThreadState::self()->restoreCallingIdentity(token);
556
557    mStarted = true;
558    return OK;
559}
560
561void CameraSource::stopCameraRecording() {
562    mCamera->setListener(NULL);
563    mCamera->stopRecording();
564}
565
566status_t CameraSource::stop() {
567    LOGV("stop");
568    Mutex::Autolock autoLock(mLock);
569    mStarted = false;
570    mFrameAvailableCondition.signal();
571
572    int64_t token = IPCThreadState::self()->clearCallingIdentity();
573    stopCameraRecording();
574    releaseQueuedFrames();
575    while (!mFramesBeingEncoded.empty()) {
576        LOGI("Waiting for outstanding frames being encoded: %d",
577                mFramesBeingEncoded.size());
578        mFrameCompleteCondition.wait(mLock);
579    }
580
581    LOGV("Disconnect camera");
582    if ((mCameraFlags & FLAGS_HOT_CAMERA) == 0) {
583        LOGV("Camera was cold when we started, stopping preview");
584        mCamera->stopPreview();
585    }
586    mCamera->unlock();
587    mCamera.clear();
588    mCamera = 0;
589    mCameraFlags = 0;
590    IPCThreadState::self()->restoreCallingIdentity(token);
591
592    if (mCollectStats) {
593        LOGI("Frames received/encoded/dropped: %d/%d/%d in %lld us",
594                mNumFramesReceived, mNumFramesEncoded, mNumFramesDropped,
595                mLastFrameTimestampUs - mFirstFrameTimeUs);
596    }
597
598    CHECK_EQ(mNumFramesReceived, mNumFramesEncoded + mNumFramesDropped);
599    return OK;
600}
601
602void CameraSource::releaseRecordingFrame(const sp<IMemory>& frame) {
603    mCamera->releaseRecordingFrame(frame);
604}
605
606void CameraSource::releaseQueuedFrames() {
607    List<sp<IMemory> >::iterator it;
608    while (!mFramesReceived.empty()) {
609        it = mFramesReceived.begin();
610        releaseRecordingFrame(*it);
611        mFramesReceived.erase(it);
612        ++mNumFramesDropped;
613    }
614}
615
616sp<MetaData> CameraSource::getFormat() {
617    return mMeta;
618}
619
620void CameraSource::releaseOneRecordingFrame(const sp<IMemory>& frame) {
621    int64_t token = IPCThreadState::self()->clearCallingIdentity();
622    releaseRecordingFrame(frame);
623    IPCThreadState::self()->restoreCallingIdentity(token);
624}
625
626void CameraSource::signalBufferReturned(MediaBuffer *buffer) {
627    LOGV("signalBufferReturned: %p", buffer->data());
628    Mutex::Autolock autoLock(mLock);
629    for (List<sp<IMemory> >::iterator it = mFramesBeingEncoded.begin();
630         it != mFramesBeingEncoded.end(); ++it) {
631        if ((*it)->pointer() ==  buffer->data()) {
632            releaseOneRecordingFrame((*it));
633            mFramesBeingEncoded.erase(it);
634            ++mNumFramesEncoded;
635            buffer->setObserver(0);
636            buffer->release();
637            mFrameCompleteCondition.signal();
638            return;
639        }
640    }
641    CHECK_EQ(0, "signalBufferReturned: bogus buffer");
642}
643
644status_t CameraSource::read(
645        MediaBuffer **buffer, const ReadOptions *options) {
646    LOGV("read");
647
648    *buffer = NULL;
649
650    int64_t seekTimeUs;
651    ReadOptions::SeekMode mode;
652    if (options && options->getSeekTo(&seekTimeUs, &mode)) {
653        return ERROR_UNSUPPORTED;
654    }
655
656    sp<IMemory> frame;
657    int64_t frameTime;
658
659    {
660        Mutex::Autolock autoLock(mLock);
661        while (mStarted) {
662            while(mFramesReceived.empty()) {
663                mFrameAvailableCondition.wait(mLock);
664            }
665
666            if (!mStarted) {
667                return OK;
668            }
669
670            frame = *mFramesReceived.begin();
671            mFramesReceived.erase(mFramesReceived.begin());
672
673            frameTime = *mFrameTimes.begin();
674            mFrameTimes.erase(mFrameTimes.begin());
675            int64_t skipTimeUs;
676            if (!options || !options->getSkipFrame(&skipTimeUs)) {
677                skipTimeUs = frameTime;
678            }
679            if (skipTimeUs > frameTime) {
680                LOGV("skipTimeUs: %lld us > frameTime: %lld us",
681                    skipTimeUs, frameTime);
682                releaseOneRecordingFrame(frame);
683                ++mNumFramesDropped;
684                // Safeguard against the abuse of the kSkipFrame_Option.
685                if (skipTimeUs - frameTime >= 1E6) {
686                    LOGE("Frame skipping requested is way too long: %lld us",
687                        skipTimeUs - frameTime);
688                    return UNKNOWN_ERROR;
689                }
690            } else {
691                mFramesBeingEncoded.push_back(frame);
692                *buffer = new MediaBuffer(frame->pointer(), frame->size());
693                (*buffer)->setObserver(this);
694                (*buffer)->add_ref();
695                (*buffer)->meta_data()->setInt64(kKeyTime, frameTime);
696
697                return OK;
698            }
699        }
700    }
701    return OK;
702}
703
704void CameraSource::dataCallbackTimestamp(int64_t timestampUs,
705        int32_t msgType, const sp<IMemory> &data) {
706    LOGV("dataCallbackTimestamp: timestamp %lld us", timestampUs);
707    Mutex::Autolock autoLock(mLock);
708    if (!mStarted) {
709        releaseOneRecordingFrame(data);
710        ++mNumFramesReceived;
711        ++mNumFramesDropped;
712        return;
713    }
714
715    if (mNumFramesReceived > 0 &&
716        timestampUs - mLastFrameTimestampUs > mGlitchDurationThresholdUs) {
717        if (mNumGlitches % 10 == 0) {  // Don't spam the log
718            LOGW("Long delay detected in video recording");
719        }
720        ++mNumGlitches;
721    }
722
723    // May need to skip frame or modify timestamp. Currently implemented
724    // by the subclass CameraSourceTimeLapse.
725    if(skipCurrentFrame(timestampUs)) {
726        releaseOneRecordingFrame(data);
727        return;
728    }
729
730    mLastFrameTimestampUs = timestampUs;
731    if (mNumFramesReceived == 0) {
732        mFirstFrameTimeUs = timestampUs;
733        // Initial delay
734        if (mStartTimeUs > 0) {
735            if (timestampUs < mStartTimeUs) {
736                // Frame was captured before recording was started
737                // Drop it without updating the statistical data.
738                releaseOneRecordingFrame(data);
739                return;
740            }
741            mStartTimeUs = timestampUs - mStartTimeUs;
742        }
743    }
744    ++mNumFramesReceived;
745
746    mFramesReceived.push_back(data);
747    int64_t timeUs = mStartTimeUs + (timestampUs - mFirstFrameTimeUs);
748    mFrameTimes.push_back(timeUs);
749    LOGV("initial delay: %lld, current time stamp: %lld",
750        mStartTimeUs, timeUs);
751    mFrameAvailableCondition.signal();
752}
753
754size_t CameraSource::getNumberOfVideoBuffers() const {
755    LOGV("getNumberOfVideoBuffers");
756    size_t nBuffers = 0;
757    int64_t token = IPCThreadState::self()->clearCallingIdentity();
758    if (mInitCheck == OK && mCamera != 0) {
759        nBuffers = mCamera->getNumberOfVideoBuffers();
760    }
761    IPCThreadState::self()->restoreCallingIdentity(token);
762    return nBuffers;
763}
764
765sp<IMemory> CameraSource::getVideoBuffer(size_t index) const {
766    LOGV("getVideoBuffer: %d", index);
767    sp<IMemory> buffer = 0;
768    int64_t token = IPCThreadState::self()->clearCallingIdentity();
769    if (mInitCheck == OK && mCamera != 0) {
770        buffer = mCamera->getVideoBuffer(index);
771    }
772    IPCThreadState::self()->restoreCallingIdentity(token);
773    return buffer;
774}
775
776bool CameraSource::isMetaDataStoredInVideoBuffers() const {
777    LOGV("isMetaDataStoredInVideoBuffers");
778    return mIsMetaDataStoredInVideoBuffers;
779}
780
781}  // namespace android
782