MPEG4Writer.cpp revision f60cafe0e6aad8f9ce54660fa88b651ae4e749e6 
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 "MPEG4Writer"
19#include <utils/Log.h>
20
21#include <arpa/inet.h>
22
23#include <ctype.h>
24#include <pthread.h>
25
26#include <media/stagefright/MPEG4Writer.h>
27#include <media/stagefright/MediaBuffer.h>
28#include <media/stagefright/MetaData.h>
29#include <media/stagefright/MediaDebug.h>
30#include <media/stagefright/MediaDefs.h>
31#include <media/stagefright/MediaErrors.h>
32#include <media/stagefright/MediaSource.h>
33#include <media/stagefright/Utils.h>
34#include <media/mediarecorder.h>
35#include <cutils/properties.h>
36
37namespace android {
38
39class MPEG4Writer::Track {
40public:
41    Track(MPEG4Writer *owner, const sp<MediaSource> &source);
42    ~Track();
43
44    status_t start(int64_t startTimeUs);
45    void stop();
46    void pause();
47    bool reachedEOS();
48
49    int64_t getDurationUs() const;
50    int64_t getEstimatedTrackSizeBytes() const;
51    void writeTrackHeader(int32_t trackID);
52
53private:
54    MPEG4Writer *mOwner;
55    sp<MetaData> mMeta;
56    sp<MediaSource> mSource;
57    volatile bool mDone;
58    volatile bool mPaused;
59    volatile bool mResumed;
60    int64_t mMaxTimeStampUs;
61    int64_t mEstimatedTrackSizeBytes;
62
63    pthread_t mThread;
64
65    struct SampleInfo {
66        size_t size;
67        int64_t timestamp;
68    };
69    List<SampleInfo>    mSampleInfos;
70    bool                mSamplesHaveSameSize;
71
72    List<MediaBuffer *> mChunkSamples;
73    List<off_t>         mChunkOffsets;
74
75    struct StscTableEntry {
76
77        StscTableEntry(uint32_t chunk, uint32_t samples, uint32_t id)
78            : firstChunk(chunk),
79              samplesPerChunk(samples),
80              sampleDescriptionId(id) {}
81
82        uint32_t firstChunk;
83        uint32_t samplesPerChunk;
84        uint32_t sampleDescriptionId;
85    };
86    List<StscTableEntry> mStscTableEntries;
87
88    List<int32_t> mStssTableEntries;
89    List<int64_t> mChunkDurations;
90
91    struct SttsTableEntry {
92
93        SttsTableEntry(uint32_t count, uint32_t duration)
94            : sampleCount(count), sampleDuration(duration) {}
95
96        uint32_t sampleCount;
97        uint32_t sampleDuration;
98    };
99    List<SttsTableEntry> mSttsTableEntries;
100
101    void *mCodecSpecificData;
102    size_t mCodecSpecificDataSize;
103    bool mGotAllCodecSpecificData;
104
105    bool mReachedEOS;
106    int64_t mStartTimestampUs;
107
108    static void *ThreadWrapper(void *me);
109    void threadEntry();
110
111    status_t makeAVCCodecSpecificData(
112            const uint8_t *data, size_t size);
113    void writeOneChunk(bool isAvc);
114    void logStatisticalData(bool isAudio);
115    void findMinMaxFrameRates(float *minFps, float *maxFps);
116    void findMinMaxChunkDurations(int64_t *min, int64_t *max);
117
118    Track(const Track &);
119    Track &operator=(const Track &);
120};
121
122#define USE_NALLEN_FOUR         1
123
124MPEG4Writer::MPEG4Writer(const char *filename)
125    : mFile(fopen(filename, "wb")),
126      mPaused(false),
127      mStarted(false),
128      mOffset(0),
129      mMdatOffset(0),
130      mEstimatedMoovBoxSize(0),
131      mInterleaveDurationUs(500000) {
132    CHECK(mFile != NULL);
133}
134
135MPEG4Writer::MPEG4Writer(int fd)
136    : mFile(fdopen(fd, "wb")),
137      mPaused(false),
138      mStarted(false),
139      mOffset(0),
140      mMdatOffset(0),
141      mEstimatedMoovBoxSize(0),
142      mInterleaveDurationUs(500000) {
143    CHECK(mFile != NULL);
144}
145
146MPEG4Writer::~MPEG4Writer() {
147    stop();
148
149    for (List<Track *>::iterator it = mTracks.begin();
150         it != mTracks.end(); ++it) {
151        delete *it;
152    }
153    mTracks.clear();
154}
155
156status_t MPEG4Writer::addSource(const sp<MediaSource> &source) {
157    Track *track = new Track(this, source);
158    mTracks.push_back(track);
159
160    return OK;
161}
162
163status_t MPEG4Writer::startTracks() {
164    int64_t startTimeUs = systemTime() / 1000;
165    for (List<Track *>::iterator it = mTracks.begin();
166         it != mTracks.end(); ++it) {
167        status_t err = (*it)->start(startTimeUs);
168
169        if (err != OK) {
170            for (List<Track *>::iterator it2 = mTracks.begin();
171                 it2 != it; ++it2) {
172                (*it2)->stop();
173            }
174
175            return err;
176        }
177    }
178    return OK;
179}
180
181status_t MPEG4Writer::start() {
182    if (mFile == NULL) {
183        return UNKNOWN_ERROR;
184    }
185
186    mStartTimestampUs = 0;
187    if (mStarted) {
188        if (mPaused) {
189            mPaused = false;
190            return startTracks();
191        }
192        return OK;
193    }
194
195    mStreamableFile = true;
196    mWriteMoovBoxToMemory = false;
197    mMoovBoxBuffer = NULL;
198    mMoovBoxBufferOffset = 0;
199
200    beginBox("ftyp");
201      writeFourcc("isom");
202      writeInt32(0);
203      writeFourcc("isom");
204    endBox();
205
206    mFreeBoxOffset = mOffset;
207
208    if (mEstimatedMoovBoxSize == 0) {
209        // XXX: Estimate the moov box size
210        //      based on max file size or duration limit
211        mEstimatedMoovBoxSize = 0x0F00;
212    }
213    CHECK(mEstimatedMoovBoxSize >= 8);
214    fseeko(mFile, mFreeBoxOffset, SEEK_SET);
215    writeInt32(mEstimatedMoovBoxSize);
216    write("free", 4);
217
218    mMdatOffset = mFreeBoxOffset + mEstimatedMoovBoxSize;
219    mOffset = mMdatOffset;
220    fseeko(mFile, mMdatOffset, SEEK_SET);
221    write("\x00\x00\x00\x01mdat????????", 16);
222
223    status_t err = startTracks();
224    if (err != OK) {
225        return err;
226    }
227    mStarted = true;
228    return OK;
229}
230
231void MPEG4Writer::pause() {
232    if (mFile == NULL) {
233        return;
234    }
235    mPaused = true;
236    for (List<Track *>::iterator it = mTracks.begin();
237         it != mTracks.end(); ++it) {
238        (*it)->pause();
239    }
240}
241
242void MPEG4Writer::stop() {
243    if (mFile == NULL) {
244        return;
245    }
246
247    int64_t max_duration = 0;
248    for (List<Track *>::iterator it = mTracks.begin();
249         it != mTracks.end(); ++it) {
250        (*it)->stop();
251
252        int64_t duration = (*it)->getDurationUs();
253        if (duration > max_duration) {
254            max_duration = duration;
255        }
256    }
257
258
259    // Fix up the size of the 'mdat' chunk.
260    fseeko(mFile, mMdatOffset + 8, SEEK_SET);
261    int64_t size = mOffset - mMdatOffset;
262    size = hton64(size);
263    fwrite(&size, 1, 8, mFile);
264    fseeko(mFile, mOffset, SEEK_SET);
265
266    time_t now = time(NULL);
267    const off_t moovOffset = mOffset;
268    mWriteMoovBoxToMemory = true;
269    mMoovBoxBuffer = (uint8_t *) malloc(mEstimatedMoovBoxSize);
270    mMoovBoxBufferOffset = 0;
271    CHECK(mMoovBoxBuffer != NULL);
272
273    beginBox("moov");
274
275      beginBox("mvhd");
276        writeInt32(0);             // version=0, flags=0
277        writeInt32(now);           // creation time
278        writeInt32(now);           // modification time
279        writeInt32(1000);          // timescale
280        writeInt32(max_duration / 1000);
281        writeInt32(0x10000);       // rate
282        writeInt16(0x100);         // volume
283        writeInt16(0);             // reserved
284        writeInt32(0);             // reserved
285        writeInt32(0);             // reserved
286        writeInt32(0x10000);       // matrix
287        writeInt32(0);
288        writeInt32(0);
289        writeInt32(0);
290        writeInt32(0x10000);
291        writeInt32(0);
292        writeInt32(0);
293        writeInt32(0);
294        writeInt32(0x40000000);
295        writeInt32(0);             // predefined
296        writeInt32(0);             // predefined
297        writeInt32(0);             // predefined
298        writeInt32(0);             // predefined
299        writeInt32(0);             // predefined
300        writeInt32(0);             // predefined
301        writeInt32(mTracks.size() + 1);  // nextTrackID
302      endBox();  // mvhd
303
304      int32_t id = 1;
305      for (List<Track *>::iterator it = mTracks.begin();
306           it != mTracks.end(); ++it, ++id) {
307          (*it)->writeTrackHeader(id);
308      }
309    endBox();  // moov
310
311    mWriteMoovBoxToMemory = false;
312    if (mStreamableFile) {
313        CHECK(mMoovBoxBufferOffset + 8 <= mEstimatedMoovBoxSize);
314
315        // Moov box
316        fseeko(mFile, mFreeBoxOffset, SEEK_SET);
317        mOffset = mFreeBoxOffset;
318        write(mMoovBoxBuffer, 1, mMoovBoxBufferOffset, mFile);
319
320        // Free box
321        mFreeBoxOffset = mStreamableFile? mOffset: mFreeBoxOffset;
322        fseeko(mFile, mFreeBoxOffset, SEEK_SET);
323        writeInt32(mEstimatedMoovBoxSize - mMoovBoxBufferOffset);
324        write("free", 4);
325
326        // Free temp memory
327        free(mMoovBoxBuffer);
328        mMoovBoxBuffer = NULL;
329        mMoovBoxBufferOffset = 0;
330    }
331
332    CHECK(mBoxes.empty());
333
334    fflush(mFile);
335    fclose(mFile);
336    mFile = NULL;
337    mStarted = false;
338}
339
340status_t MPEG4Writer::setInterleaveDuration(uint32_t durationUs) {
341    mInterleaveDurationUs = durationUs;
342    return OK;
343}
344
345void MPEG4Writer::lock() {
346    mLock.lock();
347}
348
349void MPEG4Writer::unlock() {
350    mLock.unlock();
351}
352
353off_t MPEG4Writer::addSample_l(MediaBuffer *buffer) {
354    off_t old_offset = mOffset;
355
356    fwrite((const uint8_t *)buffer->data() + buffer->range_offset(),
357           1, buffer->range_length(), mFile);
358
359    mOffset += buffer->range_length();
360
361    return old_offset;
362}
363
364static void StripStartcode(MediaBuffer *buffer) {
365    if (buffer->range_length() < 4) {
366        return;
367    }
368
369    const uint8_t *ptr =
370        (const uint8_t *)buffer->data() + buffer->range_offset();
371
372    if (!memcmp(ptr, "\x00\x00\x00\x01", 4)) {
373        buffer->set_range(
374                buffer->range_offset() + 4, buffer->range_length() - 4);
375    }
376}
377
378off_t MPEG4Writer::addLengthPrefixedSample_l(MediaBuffer *buffer) {
379    off_t old_offset = mOffset;
380
381    size_t length = buffer->range_length();
382
383#if USE_NALLEN_FOUR
384    uint8_t x = length >> 24;
385    fwrite(&x, 1, 1, mFile);
386    x = (length >> 16) & 0xff;
387    fwrite(&x, 1, 1, mFile);
388    x = (length >> 8) & 0xff;
389    fwrite(&x, 1, 1, mFile);
390    x = length & 0xff;
391    fwrite(&x, 1, 1, mFile);
392#else
393    CHECK(length < 65536);
394
395    uint8_t x = length >> 8;
396    fwrite(&x, 1, 1, mFile);
397    x = length & 0xff;
398    fwrite(&x, 1, 1, mFile);
399#endif
400
401    fwrite((const uint8_t *)buffer->data() + buffer->range_offset(),
402           1, length, mFile);
403
404#if USE_NALLEN_FOUR
405    mOffset += length + 4;
406#else
407    mOffset += length + 2;
408#endif
409
410    return old_offset;
411}
412
413size_t MPEG4Writer::write(
414        const void *ptr, size_t size, size_t nmemb, FILE *stream) {
415
416    const size_t bytes = size * nmemb;
417    if (mWriteMoovBoxToMemory) {
418        if (8 + mMoovBoxBufferOffset + bytes > mEstimatedMoovBoxSize) {
419            for (List<off_t>::iterator it = mBoxes.begin();
420                 it != mBoxes.end(); ++it) {
421                (*it) += mOffset;
422            }
423            fseeko(mFile, mOffset, SEEK_SET);
424            fwrite(mMoovBoxBuffer, 1, mMoovBoxBufferOffset, stream);
425            fwrite(ptr, size, nmemb, stream);
426            mOffset += (bytes + mMoovBoxBufferOffset);
427            free(mMoovBoxBuffer);
428            mMoovBoxBuffer = NULL;
429            mMoovBoxBufferOffset = 0;
430            mWriteMoovBoxToMemory = false;
431            mStreamableFile = false;
432        } else {
433            memcpy(mMoovBoxBuffer + mMoovBoxBufferOffset, ptr, bytes);
434            mMoovBoxBufferOffset += bytes;
435        }
436    } else {
437        fwrite(ptr, size, nmemb, stream);
438        mOffset += bytes;
439    }
440    return bytes;
441}
442
443void MPEG4Writer::beginBox(const char *fourcc) {
444    CHECK_EQ(strlen(fourcc), 4);
445
446    mBoxes.push_back(mWriteMoovBoxToMemory?
447            mMoovBoxBufferOffset: mOffset);
448
449    writeInt32(0);
450    writeFourcc(fourcc);
451}
452
453void MPEG4Writer::endBox() {
454    CHECK(!mBoxes.empty());
455
456    off_t offset = *--mBoxes.end();
457    mBoxes.erase(--mBoxes.end());
458
459    if (mWriteMoovBoxToMemory) {
460       int32_t x = htonl(mMoovBoxBufferOffset - offset);
461       memcpy(mMoovBoxBuffer + offset, &x, 4);
462    } else {
463        fseeko(mFile, offset, SEEK_SET);
464        writeInt32(mOffset - offset);
465        mOffset -= 4;
466        fseeko(mFile, mOffset, SEEK_SET);
467    }
468}
469
470void MPEG4Writer::writeInt8(int8_t x) {
471    write(&x, 1, 1, mFile);
472}
473
474void MPEG4Writer::writeInt16(int16_t x) {
475    x = htons(x);
476    write(&x, 1, 2, mFile);
477}
478
479void MPEG4Writer::writeInt32(int32_t x) {
480    x = htonl(x);
481    write(&x, 1, 4, mFile);
482}
483
484void MPEG4Writer::writeInt64(int64_t x) {
485    x = hton64(x);
486    write(&x, 1, 8, mFile);
487}
488
489void MPEG4Writer::writeCString(const char *s) {
490    size_t n = strlen(s);
491    write(s, 1, n + 1, mFile);
492}
493
494void MPEG4Writer::writeFourcc(const char *s) {
495    CHECK_EQ(strlen(s), 4);
496    write(s, 1, 4, mFile);
497}
498
499void MPEG4Writer::write(const void *data, size_t size) {
500    write(data, 1, size, mFile);
501}
502
503bool MPEG4Writer::exceedsFileSizeLimit() {
504    // No limit
505    if (mMaxFileSizeLimitBytes == 0) {
506        return false;
507    }
508
509    int64_t nTotalBytesEstimate = static_cast<int64_t>(mEstimatedMoovBoxSize);
510    for (List<Track *>::iterator it = mTracks.begin();
511         it != mTracks.end(); ++it) {
512        nTotalBytesEstimate += (*it)->getEstimatedTrackSizeBytes();
513    }
514    return (nTotalBytesEstimate >= mMaxFileSizeLimitBytes);
515}
516
517bool MPEG4Writer::exceedsFileDurationLimit() {
518    // No limit
519    if (mMaxFileDurationLimitUs == 0) {
520        return false;
521    }
522
523    for (List<Track *>::iterator it = mTracks.begin();
524         it != mTracks.end(); ++it) {
525        if ((*it)->getDurationUs() >= mMaxFileDurationLimitUs) {
526            return true;
527        }
528    }
529    return false;
530}
531
532bool MPEG4Writer::reachedEOS() {
533    bool allDone = true;
534    for (List<Track *>::iterator it = mTracks.begin();
535         it != mTracks.end(); ++it) {
536        if (!(*it)->reachedEOS()) {
537            allDone = false;
538            break;
539        }
540    }
541
542    return allDone;
543}
544
545void MPEG4Writer::setStartTimestampUs(int64_t timeUs) {
546    LOGI("setStartTimestampUs: %lld", timeUs);
547    CHECK(timeUs >= 0);
548    Mutex::Autolock autoLock(mLock);
549    if (mStartTimestampUs == 0 ||
550        (mStartTimestampUs > 0 && mStartTimestampUs > timeUs)) {
551        mStartTimestampUs = timeUs;
552        LOGI("Earliest track starting time: %lld", mStartTimestampUs);
553    }
554}
555
556int64_t MPEG4Writer::getStartTimestampUs() {
557    LOGI("getStartTimestampUs: %lld", mStartTimestampUs);
558    Mutex::Autolock autoLock(mLock);
559    return mStartTimestampUs;
560}
561
562////////////////////////////////////////////////////////////////////////////////
563
564MPEG4Writer::Track::Track(
565        MPEG4Writer *owner, const sp<MediaSource> &source)
566    : mOwner(owner),
567      mMeta(source->getFormat()),
568      mSource(source),
569      mDone(false),
570      mPaused(false),
571      mResumed(false),
572      mMaxTimeStampUs(0),
573      mEstimatedTrackSizeBytes(0),
574      mSamplesHaveSameSize(true),
575      mCodecSpecificData(NULL),
576      mCodecSpecificDataSize(0),
577      mGotAllCodecSpecificData(false),
578      mReachedEOS(false) {
579}
580
581MPEG4Writer::Track::~Track() {
582    stop();
583
584    if (mCodecSpecificData != NULL) {
585        free(mCodecSpecificData);
586        mCodecSpecificData = NULL;
587    }
588}
589
590status_t MPEG4Writer::Track::start(int64_t startTimeUs) {
591    if (!mDone && mPaused) {
592        mPaused = false;
593        mResumed = true;
594        return OK;
595    }
596
597    sp<MetaData> meta = new MetaData;
598    meta->setInt64(kKeyTime, startTimeUs);
599    status_t err = mSource->start(meta.get());
600    if (err != OK) {
601        mDone = mReachedEOS = true;
602        return err;
603    }
604
605    pthread_attr_t attr;
606    pthread_attr_init(&attr);
607    pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
608
609    mDone = false;
610    mMaxTimeStampUs = 0;
611    mReachedEOS = false;
612    mEstimatedTrackSizeBytes = 0;
613
614    pthread_create(&mThread, &attr, ThreadWrapper, this);
615    pthread_attr_destroy(&attr);
616
617    return OK;
618}
619
620void MPEG4Writer::Track::pause() {
621    mPaused = true;
622}
623
624void MPEG4Writer::Track::stop() {
625    if (mDone) {
626        return;
627    }
628
629    mDone = true;
630
631    void *dummy;
632    pthread_join(mThread, &dummy);
633
634    mSource->stop();
635}
636
637bool MPEG4Writer::Track::reachedEOS() {
638    return mReachedEOS;
639}
640
641// static
642void *MPEG4Writer::Track::ThreadWrapper(void *me) {
643    Track *track = static_cast<Track *>(me);
644
645    track->threadEntry();
646
647    return NULL;
648}
649
650#include <ctype.h>
651static void hexdump(const void *_data, size_t size) {
652    const uint8_t *data = (const uint8_t *)_data;
653    size_t offset = 0;
654    while (offset < size) {
655        printf("0x%04x  ", offset);
656
657        size_t n = size - offset;
658        if (n > 16) {
659            n = 16;
660        }
661
662        for (size_t i = 0; i < 16; ++i) {
663            if (i == 8) {
664                printf(" ");
665            }
666
667            if (offset + i < size) {
668                printf("%02x ", data[offset + i]);
669            } else {
670                printf("   ");
671            }
672        }
673
674        printf(" ");
675
676        for (size_t i = 0; i < n; ++i) {
677            if (isprint(data[offset + i])) {
678                printf("%c", data[offset + i]);
679            } else {
680                printf(".");
681            }
682        }
683
684        printf("\n");
685
686        offset += 16;
687    }
688}
689
690
691status_t MPEG4Writer::Track::makeAVCCodecSpecificData(
692        const uint8_t *data, size_t size) {
693    // hexdump(data, size);
694
695    if (mCodecSpecificData != NULL) {
696        LOGE("Already have codec specific data");
697        return ERROR_MALFORMED;
698    }
699
700    if (size < 4 || memcmp("\x00\x00\x00\x01", data, 4)) {
701        LOGE("Must start with a start code");
702        return ERROR_MALFORMED;
703    }
704
705    size_t picParamOffset = 4;
706    while (picParamOffset + 3 < size
707            && memcmp("\x00\x00\x00\x01", &data[picParamOffset], 4)) {
708        ++picParamOffset;
709    }
710
711    if (picParamOffset + 3 >= size) {
712        LOGE("Could not find start-code for pictureParameterSet");
713        return ERROR_MALFORMED;
714    }
715
716    size_t seqParamSetLength = picParamOffset - 4;
717    size_t picParamSetLength = size - picParamOffset - 4;
718
719    mCodecSpecificDataSize =
720        6 + 1 + seqParamSetLength + 2 + picParamSetLength + 2;
721
722    mCodecSpecificData = malloc(mCodecSpecificDataSize);
723    uint8_t *header = (uint8_t *)mCodecSpecificData;
724    header[0] = 1;
725    header[1] = 0x42;  // profile
726    header[2] = 0x80;
727    header[3] = 0x1e;  // level
728
729#if USE_NALLEN_FOUR
730    header[4] = 0xfc | 3;  // length size == 4 bytes
731#else
732    header[4] = 0xfc | 1;  // length size == 2 bytes
733#endif
734
735    header[5] = 0xe0 | 1;
736    header[6] = seqParamSetLength >> 8;
737    header[7] = seqParamSetLength & 0xff;
738    memcpy(&header[8], &data[4], seqParamSetLength);
739    header += 8 + seqParamSetLength;
740    header[0] = 1;
741    header[1] = picParamSetLength >> 8;
742    header[2] = picParamSetLength & 0xff;
743    memcpy(&header[3], &data[picParamOffset + 4], picParamSetLength);
744
745    return OK;
746}
747
748void MPEG4Writer::Track::threadEntry() {
749    sp<MetaData> meta = mSource->getFormat();
750    const char *mime;
751    meta->findCString(kKeyMIMEType, &mime);
752    bool is_mpeg4 = !strcasecmp(mime, MEDIA_MIMETYPE_VIDEO_MPEG4) ||
753                    !strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_AAC);
754    bool is_avc = !strcasecmp(mime, MEDIA_MIMETYPE_VIDEO_AVC);
755    bool is_audio = !strncasecmp(mime, "audio/", 6);
756    int32_t count = 0;
757    const int64_t interleaveDurationUs = mOwner->interleaveDuration();
758    int64_t chunkTimestampUs = 0;
759    int32_t nChunks = 0;
760    int32_t nZeroLengthFrames = 0;
761    int64_t lastTimestamp = 0;  // Timestamp of the previous sample
762    int64_t lastDuration = 0;   // Time spacing between the previous two samples
763    int32_t sampleCount = 1;    // Sample count in the current stts table entry
764    uint32_t previousSampleSize = 0;  // Size of the previous sample
765    int64_t previousPausedDurationUs = 0;
766    sp<MetaData> meta_data;
767
768    MediaBuffer *buffer;
769    while (!mDone && mSource->read(&buffer) == OK) {
770        if (buffer->range_length() == 0) {
771            buffer->release();
772            buffer = NULL;
773            ++nZeroLengthFrames;
774            continue;
775        }
776
777        // If the codec specific data has not been received yet, delay pause.
778        // After the codec specific data is received, discard what we received
779        // when the track is to be paused.
780        if (mPaused && !mResumed) {
781            buffer->release();
782            buffer = NULL;
783            continue;
784        }
785
786        ++count;
787
788        int32_t isCodecConfig;
789        if (buffer->meta_data()->findInt32(kKeyIsCodecConfig, &isCodecConfig)
790                && isCodecConfig) {
791            CHECK(!mGotAllCodecSpecificData);
792
793            if (is_avc) {
794                status_t err = makeAVCCodecSpecificData(
795                        (const uint8_t *)buffer->data()
796                            + buffer->range_offset(),
797                        buffer->range_length());
798                CHECK_EQ(OK, err);
799            } else if (is_mpeg4) {
800                mCodecSpecificDataSize = buffer->range_length();
801                mCodecSpecificData = malloc(mCodecSpecificDataSize);
802                memcpy(mCodecSpecificData,
803                        (const uint8_t *)buffer->data()
804                            + buffer->range_offset(),
805                       buffer->range_length());
806            }
807
808            buffer->release();
809            buffer = NULL;
810
811            mGotAllCodecSpecificData = true;
812            continue;
813        } else if (!mGotAllCodecSpecificData &&
814                count == 1 && is_mpeg4 && mCodecSpecificData == NULL) {
815            // The TI mpeg4 encoder does not properly set the
816            // codec-specific-data flag.
817
818            const uint8_t *data =
819                (const uint8_t *)buffer->data() + buffer->range_offset();
820
821            const size_t size = buffer->range_length();
822
823            size_t offset = 0;
824            while (offset + 3 < size) {
825                if (data[offset] == 0x00 && data[offset + 1] == 0x00
826                    && data[offset + 2] == 0x01 && data[offset + 3] == 0xb6) {
827                    break;
828                }
829
830                ++offset;
831            }
832
833            // CHECK(offset + 3 < size);
834            if (offset + 3 >= size) {
835                // XXX assume the entire first chunk of data is the codec specific
836                // data.
837                offset = size;
838            }
839
840            mCodecSpecificDataSize = offset;
841            mCodecSpecificData = malloc(offset);
842            memcpy(mCodecSpecificData, data, offset);
843
844            buffer->set_range(buffer->range_offset() + offset, size - offset);
845
846            if (size == offset) {
847                buffer->release();
848                buffer = NULL;
849
850                continue;
851            }
852
853            mGotAllCodecSpecificData = true;
854        } else if (!mGotAllCodecSpecificData && is_avc && count < 3) {
855            // The TI video encoder does not flag codec specific data
856            // as such and also splits up SPS and PPS across two buffers.
857
858            const uint8_t *data =
859                (const uint8_t *)buffer->data() + buffer->range_offset();
860
861            size_t size = buffer->range_length();
862
863            CHECK(count == 2 || mCodecSpecificData == NULL);
864
865            size_t offset = mCodecSpecificDataSize;
866            mCodecSpecificDataSize += size + 4;
867            mCodecSpecificData =
868                realloc(mCodecSpecificData, mCodecSpecificDataSize);
869
870            memcpy((uint8_t *)mCodecSpecificData + offset,
871                   "\x00\x00\x00\x01", 4);
872
873            memcpy((uint8_t *)mCodecSpecificData + offset + 4, data, size);
874
875            buffer->release();
876            buffer = NULL;
877
878            if (count == 2) {
879                void *tmp = mCodecSpecificData;
880                size = mCodecSpecificDataSize;
881                mCodecSpecificData = NULL;
882                mCodecSpecificDataSize = 0;
883
884                status_t err = makeAVCCodecSpecificData(
885                        (const uint8_t *)tmp, size);
886                free(tmp);
887                tmp = NULL;
888                CHECK_EQ(OK, err);
889
890                mGotAllCodecSpecificData = true;
891            }
892
893            continue;
894        }
895
896        if (!mGotAllCodecSpecificData) {
897            mGotAllCodecSpecificData = true;
898        }
899
900        // Make a deep copy of the MediaBuffer and Metadata and release
901        // the original as soon as we can
902        MediaBuffer *copy = new MediaBuffer(buffer->range_length());
903        memcpy(copy->data(), (uint8_t *)buffer->data() + buffer->range_offset(),
904                buffer->range_length());
905        copy->set_range(0, buffer->range_length());
906        meta_data = new MetaData(*buffer->meta_data().get());
907        buffer->release();
908        buffer = NULL;
909
910        if (is_avc) StripStartcode(copy);
911
912        SampleInfo info;
913        info.size = is_avc
914#if USE_NALLEN_FOUR
915                ? copy->range_length() + 4
916#else
917                ? copy->range_length() + 2
918#endif
919                : copy->range_length();
920
921        // Max file size or duration handling
922        mEstimatedTrackSizeBytes += info.size;
923        if (mOwner->exceedsFileSizeLimit()) {
924            mOwner->notify(MEDIA_RECORDER_EVENT_INFO, MEDIA_RECORDER_INFO_MAX_FILESIZE_REACHED, 0);
925            break;
926        }
927        if (mOwner->exceedsFileDurationLimit()) {
928            mOwner->notify(MEDIA_RECORDER_EVENT_INFO, MEDIA_RECORDER_INFO_MAX_DURATION_REACHED, 0);
929            break;
930        }
931
932
933        int32_t isSync = false;
934        meta_data->findInt32(kKeyIsSyncFrame, &isSync);
935
936        int64_t timestampUs;
937        CHECK(meta_data->findInt64(kKeyTime, &timestampUs));
938
939////////////////////////////////////////////////////////////////////////////////
940        if (mSampleInfos.empty()) {
941            mStartTimestampUs = timestampUs;
942            mOwner->setStartTimestampUs(mStartTimestampUs);
943        }
944
945        if (mResumed) {
946            previousPausedDurationUs += (timestampUs - mMaxTimeStampUs - 1000 * lastDuration);
947            mResumed = false;
948        }
949
950        timestampUs -= previousPausedDurationUs;
951        LOGV("time stamp: %lld and previous paused duration %lld",
952                timestampUs, previousPausedDurationUs);
953        if (timestampUs > mMaxTimeStampUs) {
954            mMaxTimeStampUs = timestampUs;
955        }
956
957        // Our timestamp is in ms.
958        info.timestamp = (timestampUs + 500) / 1000;
959        mSampleInfos.push_back(info);
960        if (mSampleInfos.size() > 2) {
961            if (lastDuration != info.timestamp - lastTimestamp) {
962                SttsTableEntry sttsEntry(sampleCount, lastDuration);
963                mSttsTableEntries.push_back(sttsEntry);
964                sampleCount = 1;
965            } else {
966                ++sampleCount;
967            }
968        }
969        if (mSamplesHaveSameSize) {
970            if (mSampleInfos.size() >= 2 && previousSampleSize != info.size) {
971                mSamplesHaveSameSize = false;
972            }
973            previousSampleSize = info.size;
974        }
975        lastDuration = info.timestamp - lastTimestamp;
976        lastTimestamp = info.timestamp;
977
978        if (isSync != 0) {
979            mStssTableEntries.push_back(mSampleInfos.size());
980        }
981
982
983        mChunkSamples.push_back(copy);
984        if (interleaveDurationUs == 0) {
985            StscTableEntry stscEntry(++nChunks, 1, 1);
986            mStscTableEntries.push_back(stscEntry);
987            writeOneChunk(is_avc);
988        } else {
989            if (chunkTimestampUs == 0) {
990                chunkTimestampUs = timestampUs;
991            } else {
992                if (timestampUs - chunkTimestampUs > interleaveDurationUs) {
993                    ++nChunks;
994                    mChunkDurations.push_back(timestampUs - chunkTimestampUs);
995                    if (nChunks == 1 ||  // First chunk
996                        (--(mStscTableEntries.end()))->samplesPerChunk !=
997                         mChunkSamples.size()) {
998                        StscTableEntry stscEntry(nChunks,
999                                mChunkSamples.size(), 1);
1000                        mStscTableEntries.push_back(stscEntry);
1001                    }
1002                    writeOneChunk(is_avc);
1003                    chunkTimestampUs = timestampUs;
1004                }
1005            }
1006        }
1007
1008    }
1009
1010    if (mSampleInfos.empty()) {
1011        mOwner->notify(MEDIA_RECORDER_EVENT_INFO, MEDIA_RECORDER_INFO_STOP_PREMATURELY, 0);
1012    }
1013
1014    // Last chunk
1015    if (!mChunkSamples.empty()) {
1016        ++nChunks;
1017        StscTableEntry stscEntry(nChunks, mChunkSamples.size(), 1);
1018        mStscTableEntries.push_back(stscEntry);
1019        writeOneChunk(is_avc);
1020    }
1021
1022    // We don't really know how long the last frame lasts, since
1023    // there is no frame time after it, just repeat the previous
1024    // frame's duration.
1025    if (mSampleInfos.size() == 1) {
1026        lastDuration = 0;  // A single sample's duration
1027    } else {
1028        ++sampleCount;  // Count for the last sample
1029    }
1030    SttsTableEntry sttsEntry(sampleCount, lastDuration);
1031    mSttsTableEntries.push_back(sttsEntry);
1032    mReachedEOS = true;
1033    LOGI("Received total/0-length (%d/%d) buffers and encoded %d frames - %s",
1034            count, nZeroLengthFrames, mSampleInfos.size(), is_audio? "audio": "video");
1035
1036    logStatisticalData(is_audio);
1037}
1038
1039void MPEG4Writer::Track::findMinMaxFrameRates(float *minFps, float *maxFps) {
1040    int32_t minSampleDuration = 0x7FFFFFFF;
1041    int32_t maxSampleDuration = 0;
1042    for (List<SttsTableEntry>::iterator it = mSttsTableEntries.begin();
1043        it != mSttsTableEntries.end(); ++it) {
1044        int32_t sampleDuration = static_cast<int32_t>(it->sampleDuration);
1045        if (sampleDuration > maxSampleDuration) {
1046            maxSampleDuration = sampleDuration;
1047        } else if (sampleDuration < minSampleDuration) {
1048            minSampleDuration = sampleDuration;
1049        }
1050    }
1051    CHECK(minSampleDuration != 0 && maxSampleDuration != 0);
1052    *minFps = 1000.0 / maxSampleDuration;
1053    *maxFps = 1000.0 / minSampleDuration;
1054}
1055
1056// Don't count the last duration
1057void MPEG4Writer::Track::findMinMaxChunkDurations(int64_t *min, int64_t *max) {
1058    int64_t duration = mOwner->interleaveDuration();
1059    int64_t minChunkDuration = duration;
1060    int64_t maxChunkDuration = duration;
1061    if (mChunkDurations.size() > 1) {
1062        for (List<int64_t>::iterator it = mChunkDurations.begin();
1063            it != --mChunkDurations.end(); ++it) {
1064            if (minChunkDuration > (*it)) {
1065                minChunkDuration = (*it);
1066            } else if (maxChunkDuration < (*it)) {
1067                maxChunkDuration = (*it);
1068            }
1069        }
1070    }
1071    *min = minChunkDuration;
1072    *max = maxChunkDuration;
1073}
1074
1075void MPEG4Writer::Track::logStatisticalData(bool isAudio) {
1076    if (mMaxTimeStampUs <= 0 || mSampleInfos.empty()) {
1077        LOGI("nothing is recorded");
1078        return;
1079    }
1080
1081    bool collectStats = false;
1082    char value[PROPERTY_VALUE_MAX];
1083    if (property_get("media.stagefright.record-stats", value, NULL)
1084        && (!strcmp(value, "1") || !strcasecmp(value, "true"))) {
1085        collectStats = true;
1086    }
1087
1088    if (collectStats) {
1089        if (isAudio) {
1090            LOGI("audio track - duration %lld us", mMaxTimeStampUs);
1091        } else {
1092            float fps = (mSampleInfos.size() * 1000000.0) / mMaxTimeStampUs;
1093            float minFps;
1094            float maxFps;
1095            findMinMaxFrameRates(&minFps, &maxFps);
1096            LOGI("video track - duration %lld us", mMaxTimeStampUs);
1097            LOGI("min/avg/max frame rate (fps): %.2f/%.2f/%.2f",
1098                minFps, fps, maxFps);
1099        }
1100
1101        int64_t totalBytes = 0;
1102        for (List<SampleInfo>::iterator it = mSampleInfos.begin();
1103            it != mSampleInfos.end(); ++it) {
1104            totalBytes += it->size;
1105        }
1106        float bitRate = (totalBytes * 8000000.0) / mMaxTimeStampUs;
1107        LOGI("avg bit rate (bps): %.2f", bitRate);
1108
1109        int64_t duration = mOwner->interleaveDuration();
1110        if (duration != 0) {  // If interleaving is enabled
1111            int64_t minChunk, maxChunk;
1112            findMinMaxChunkDurations(&minChunk, &maxChunk);
1113            LOGI("min/avg/max chunk duration (ms): %lld/%lld/%lld",
1114                minChunk, duration, maxChunk);
1115        }
1116    }
1117}
1118
1119void MPEG4Writer::Track::writeOneChunk(bool isAvc) {
1120    mOwner->lock();
1121    for (List<MediaBuffer *>::iterator it = mChunkSamples.begin();
1122         it != mChunkSamples.end(); ++it) {
1123        off_t offset = isAvc? mOwner->addLengthPrefixedSample_l(*it)
1124                            : mOwner->addSample_l(*it);
1125        if (it == mChunkSamples.begin()) {
1126            mChunkOffsets.push_back(offset);
1127        }
1128    }
1129    mOwner->unlock();
1130    while (!mChunkSamples.empty()) {
1131        List<MediaBuffer *>::iterator it = mChunkSamples.begin();
1132        (*it)->release();
1133        (*it) = NULL;
1134        mChunkSamples.erase(it);
1135    }
1136    mChunkSamples.clear();
1137}
1138
1139int64_t MPEG4Writer::Track::getDurationUs() const {
1140    return mMaxTimeStampUs;
1141}
1142
1143int64_t MPEG4Writer::Track::getEstimatedTrackSizeBytes() const {
1144    return mEstimatedTrackSizeBytes;
1145}
1146
1147void MPEG4Writer::Track::writeTrackHeader(int32_t trackID) {
1148    const char *mime;
1149    bool success = mMeta->findCString(kKeyMIMEType, &mime);
1150    CHECK(success);
1151
1152    bool is_audio = !strncasecmp(mime, "audio/", 6);
1153
1154    time_t now = time(NULL);
1155
1156    mOwner->beginBox("trak");
1157
1158      mOwner->beginBox("tkhd");
1159        mOwner->writeInt32(0);             // version=0, flags=0
1160        mOwner->writeInt32(now);           // creation time
1161        mOwner->writeInt32(now);           // modification time
1162        mOwner->writeInt32(trackID);
1163        mOwner->writeInt32(0);             // reserved
1164        mOwner->writeInt32(getDurationUs() / 1000);
1165        mOwner->writeInt32(0);             // reserved
1166        mOwner->writeInt32(0);             // reserved
1167        mOwner->writeInt16(0);             // layer
1168        mOwner->writeInt16(0);             // alternate group
1169        mOwner->writeInt16(is_audio ? 0x100 : 0);  // volume
1170        mOwner->writeInt16(0);             // reserved
1171
1172        mOwner->writeInt32(0x10000);       // matrix
1173        mOwner->writeInt32(0);
1174        mOwner->writeInt32(0);
1175        mOwner->writeInt32(0);
1176        mOwner->writeInt32(0x10000);
1177        mOwner->writeInt32(0);
1178        mOwner->writeInt32(0);
1179        mOwner->writeInt32(0);
1180        mOwner->writeInt32(0x40000000);
1181
1182        if (is_audio) {
1183            mOwner->writeInt32(0);
1184            mOwner->writeInt32(0);
1185        } else {
1186            int32_t width, height;
1187            bool success = mMeta->findInt32(kKeyWidth, &width);
1188            success = success && mMeta->findInt32(kKeyHeight, &height);
1189            CHECK(success);
1190
1191            mOwner->writeInt32(width << 16);   // 32-bit fixed-point value
1192            mOwner->writeInt32(height << 16);  // 32-bit fixed-point value
1193        }
1194      mOwner->endBox();  // tkhd
1195
1196      int64_t moovStartTimeUs = mOwner->getStartTimestampUs();
1197      if (mStartTimestampUs != moovStartTimeUs) {
1198        mOwner->beginBox("edts");
1199          mOwner->writeInt32(0);             // version=0, flags=0
1200          mOwner->beginBox("elst");
1201            mOwner->writeInt32(0);           // version=0, flags=0
1202            mOwner->writeInt32(1);           // a single entry
1203            int64_t durationMs =
1204                (mStartTimestampUs - moovStartTimeUs) / 1000;
1205            mOwner->writeInt32(durationMs);  // edit duration
1206            mOwner->writeInt32(-1);          // empty edit box to signal starting time offset
1207            mOwner->writeInt32(1);           // x1 rate
1208          mOwner->endBox();
1209        mOwner->endBox();
1210      }
1211
1212      mOwner->beginBox("mdia");
1213
1214        mOwner->beginBox("mdhd");
1215          mOwner->writeInt32(0);             // version=0, flags=0
1216          mOwner->writeInt32(now);           // creation time
1217          mOwner->writeInt32(now);           // modification time
1218          mOwner->writeInt32(1000);          // timescale
1219          mOwner->writeInt32(getDurationUs() / 1000);
1220          mOwner->writeInt16(0);             // language code XXX
1221          mOwner->writeInt16(0);             // predefined
1222        mOwner->endBox();
1223
1224        mOwner->beginBox("hdlr");
1225          mOwner->writeInt32(0);             // version=0, flags=0
1226          mOwner->writeInt32(0);             // component type: should be mhlr
1227          mOwner->writeFourcc(is_audio ? "soun" : "vide");  // component subtype
1228          mOwner->writeInt32(0);             // reserved
1229          mOwner->writeInt32(0);             // reserved
1230          mOwner->writeInt32(0);             // reserved
1231          mOwner->writeCString(is_audio ? "SoundHandler": "");  // name
1232        mOwner->endBox();
1233
1234        mOwner->beginBox("minf");
1235          if (is_audio) {
1236              mOwner->beginBox("smhd");
1237              mOwner->writeInt32(0);           // version=0, flags=0
1238              mOwner->writeInt16(0);           // balance
1239              mOwner->writeInt16(0);           // reserved
1240              mOwner->endBox();
1241          } else {
1242              mOwner->beginBox("vmhd");
1243              mOwner->writeInt32(0x00000001);  // version=0, flags=1
1244              mOwner->writeInt16(0);           // graphics mode
1245              mOwner->writeInt16(0);           // opcolor
1246              mOwner->writeInt16(0);
1247              mOwner->writeInt16(0);
1248              mOwner->endBox();
1249          }
1250
1251          mOwner->beginBox("dinf");
1252            mOwner->beginBox("dref");
1253              mOwner->writeInt32(0);  // version=0, flags=0
1254              mOwner->writeInt32(1);
1255              mOwner->beginBox("url ");
1256                mOwner->writeInt32(1);  // version=0, flags=1
1257              mOwner->endBox();  // url
1258            mOwner->endBox();  // dref
1259          mOwner->endBox();  // dinf
1260
1261       mOwner->endBox();  // minf
1262
1263        mOwner->beginBox("stbl");
1264
1265          mOwner->beginBox("stsd");
1266            mOwner->writeInt32(0);               // version=0, flags=0
1267            mOwner->writeInt32(1);               // entry count
1268            if (is_audio) {
1269                const char *fourcc = NULL;
1270                if (!strcasecmp(MEDIA_MIMETYPE_AUDIO_AMR_NB, mime)) {
1271                    fourcc = "samr";
1272                } else if (!strcasecmp(MEDIA_MIMETYPE_AUDIO_AMR_WB, mime)) {
1273                    fourcc = "sawb";
1274                } else if (!strcasecmp(MEDIA_MIMETYPE_AUDIO_AAC, mime)) {
1275                    fourcc = "mp4a";
1276                } else {
1277                    LOGE("Unknown mime type '%s'.", mime);
1278                    CHECK(!"should not be here, unknown mime type.");
1279                }
1280
1281                mOwner->beginBox(fourcc);          // audio format
1282                  mOwner->writeInt32(0);           // reserved
1283                  mOwner->writeInt16(0);           // reserved
1284                  mOwner->writeInt16(0x1);         // data ref index
1285                  mOwner->writeInt32(0);           // reserved
1286                  mOwner->writeInt32(0);           // reserved
1287                  int32_t nChannels;
1288                  CHECK_EQ(true, mMeta->findInt32(kKeyChannelCount, &nChannels));
1289                  mOwner->writeInt16(nChannels);   // channel count
1290                  mOwner->writeInt16(16);          // sample size
1291                  mOwner->writeInt16(0);           // predefined
1292                  mOwner->writeInt16(0);           // reserved
1293
1294                  int32_t samplerate;
1295                  bool success = mMeta->findInt32(kKeySampleRate, &samplerate);
1296                  CHECK(success);
1297
1298                  mOwner->writeInt32(samplerate << 16);
1299                  if (!strcasecmp(MEDIA_MIMETYPE_AUDIO_AAC, mime)) {
1300                    mOwner->beginBox("esds");
1301
1302                        mOwner->writeInt32(0);     // version=0, flags=0
1303                        mOwner->writeInt8(0x03);   // ES_DescrTag
1304                        mOwner->writeInt8(23 + mCodecSpecificDataSize);
1305                        mOwner->writeInt16(0x0000);// ES_ID
1306                        mOwner->writeInt8(0x00);
1307
1308                        mOwner->writeInt8(0x04);   // DecoderConfigDescrTag
1309                        mOwner->writeInt8(15 + mCodecSpecificDataSize);
1310                        mOwner->writeInt8(0x40);   // objectTypeIndication ISO/IEC 14492-2
1311                        mOwner->writeInt8(0x15);   // streamType AudioStream
1312
1313                        mOwner->writeInt16(0x03);  // XXX
1314                        mOwner->writeInt8(0x00);   // buffer size 24-bit
1315                        mOwner->writeInt32(96000); // max bit rate
1316                        mOwner->writeInt32(96000); // avg bit rate
1317
1318                        mOwner->writeInt8(0x05);   // DecoderSpecificInfoTag
1319                        mOwner->writeInt8(mCodecSpecificDataSize);
1320                        mOwner->write(mCodecSpecificData, mCodecSpecificDataSize);
1321
1322                        static const uint8_t kData2[] = {
1323                            0x06,  // SLConfigDescriptorTag
1324                            0x01,
1325                            0x02
1326                        };
1327                        mOwner->write(kData2, sizeof(kData2));
1328
1329                    mOwner->endBox();  // esds
1330                  }
1331                mOwner->endBox();
1332            } else {
1333                if (!strcasecmp(MEDIA_MIMETYPE_VIDEO_MPEG4, mime)) {
1334                    mOwner->beginBox("mp4v");
1335                } else if (!strcasecmp(MEDIA_MIMETYPE_VIDEO_H263, mime)) {
1336                    mOwner->beginBox("s263");
1337                } else if (!strcasecmp(MEDIA_MIMETYPE_VIDEO_AVC, mime)) {
1338                    mOwner->beginBox("avc1");
1339                } else {
1340                    LOGE("Unknown mime type '%s'.", mime);
1341                    CHECK(!"should not be here, unknown mime type.");
1342                }
1343
1344                  mOwner->writeInt32(0);           // reserved
1345                  mOwner->writeInt16(0);           // reserved
1346                  mOwner->writeInt16(0);           // data ref index
1347                  mOwner->writeInt16(0);           // predefined
1348                  mOwner->writeInt16(0);           // reserved
1349                  mOwner->writeInt32(0);           // predefined
1350                  mOwner->writeInt32(0);           // predefined
1351                  mOwner->writeInt32(0);           // predefined
1352
1353                  int32_t width, height;
1354                  bool success = mMeta->findInt32(kKeyWidth, &width);
1355                  success = success && mMeta->findInt32(kKeyHeight, &height);
1356                  CHECK(success);
1357
1358                  mOwner->writeInt16(width);
1359                  mOwner->writeInt16(height);
1360                  mOwner->writeInt32(0x480000);    // horiz resolution
1361                  mOwner->writeInt32(0x480000);    // vert resolution
1362                  mOwner->writeInt32(0);           // reserved
1363                  mOwner->writeInt16(1);           // frame count
1364                  mOwner->write("                                ", 32);
1365                  mOwner->writeInt16(0x18);        // depth
1366                  mOwner->writeInt16(-1);          // predefined
1367
1368                  CHECK(23 + mCodecSpecificDataSize < 128);
1369
1370                  if (!strcasecmp(MEDIA_MIMETYPE_VIDEO_MPEG4, mime)) {
1371                      mOwner->beginBox("esds");
1372
1373                        mOwner->writeInt32(0);           // version=0, flags=0
1374
1375                        mOwner->writeInt8(0x03);  // ES_DescrTag
1376                        mOwner->writeInt8(23 + mCodecSpecificDataSize);
1377                        mOwner->writeInt16(0x0000);  // ES_ID
1378                        mOwner->writeInt8(0x1f);
1379
1380                        mOwner->writeInt8(0x04);  // DecoderConfigDescrTag
1381                        mOwner->writeInt8(15 + mCodecSpecificDataSize);
1382                        mOwner->writeInt8(0x20);  // objectTypeIndication ISO/IEC 14492-2
1383                        mOwner->writeInt8(0x11);  // streamType VisualStream
1384
1385                        static const uint8_t kData[] = {
1386                            0x01, 0x77, 0x00,
1387                            0x00, 0x03, 0xe8, 0x00,
1388                            0x00, 0x03, 0xe8, 0x00
1389                        };
1390                        mOwner->write(kData, sizeof(kData));
1391
1392                        mOwner->writeInt8(0x05);  // DecoderSpecificInfoTag
1393
1394                        mOwner->writeInt8(mCodecSpecificDataSize);
1395                        mOwner->write(mCodecSpecificData, mCodecSpecificDataSize);
1396
1397                        static const uint8_t kData2[] = {
1398                            0x06,  // SLConfigDescriptorTag
1399                            0x01,
1400                            0x02
1401                        };
1402                        mOwner->write(kData2, sizeof(kData2));
1403
1404                      mOwner->endBox();  // esds
1405                  } else if (!strcasecmp(MEDIA_MIMETYPE_VIDEO_H263, mime)) {
1406                      mOwner->beginBox("d263");
1407
1408                          mOwner->writeInt32(0);  // vendor
1409                          mOwner->writeInt8(0);   // decoder version
1410                          mOwner->writeInt8(10);  // level: 10
1411                          mOwner->writeInt8(0);   // profile: 0
1412
1413                      mOwner->endBox();  // d263
1414                  } else if (!strcasecmp(MEDIA_MIMETYPE_VIDEO_AVC, mime)) {
1415                      mOwner->beginBox("avcC");
1416                        mOwner->write(mCodecSpecificData, mCodecSpecificDataSize);
1417                      mOwner->endBox();  // avcC
1418                  }
1419
1420                mOwner->endBox();  // mp4v, s263 or avc1
1421            }
1422          mOwner->endBox();  // stsd
1423
1424          mOwner->beginBox("stts");
1425            mOwner->writeInt32(0);  // version=0, flags=0
1426            mOwner->writeInt32(mSttsTableEntries.size());
1427            for (List<SttsTableEntry>::iterator it = mSttsTableEntries.begin();
1428                 it != mSttsTableEntries.end(); ++it) {
1429                mOwner->writeInt32(it->sampleCount);
1430                mOwner->writeInt32(it->sampleDuration);
1431            }
1432          mOwner->endBox();  // stts
1433
1434          if (!is_audio) {
1435            mOwner->beginBox("stss");
1436              mOwner->writeInt32(0);  // version=0, flags=0
1437              mOwner->writeInt32(mStssTableEntries.size());  // number of sync frames
1438              for (List<int32_t>::iterator it = mStssTableEntries.begin();
1439                   it != mStssTableEntries.end(); ++it) {
1440                  mOwner->writeInt32(*it);
1441              }
1442            mOwner->endBox();  // stss
1443          }
1444
1445          mOwner->beginBox("stsz");
1446            mOwner->writeInt32(0);  // version=0, flags=0
1447            if (mSamplesHaveSameSize) {
1448                List<SampleInfo>::iterator it = mSampleInfos.begin();
1449                mOwner->writeInt32(it->size);  // default sample size
1450            } else {
1451                mOwner->writeInt32(0);
1452            }
1453            mOwner->writeInt32(mSampleInfos.size());
1454            if (!mSamplesHaveSameSize) {
1455                for (List<SampleInfo>::iterator it = mSampleInfos.begin();
1456                     it != mSampleInfos.end(); ++it) {
1457                    mOwner->writeInt32((*it).size);
1458                }
1459            }
1460          mOwner->endBox();  // stsz
1461
1462          mOwner->beginBox("stsc");
1463            mOwner->writeInt32(0);  // version=0, flags=0
1464            mOwner->writeInt32(mStscTableEntries.size());
1465            for (List<StscTableEntry>::iterator it = mStscTableEntries.begin();
1466                 it != mStscTableEntries.end(); ++it) {
1467                mOwner->writeInt32(it->firstChunk);
1468                mOwner->writeInt32(it->samplesPerChunk);
1469                mOwner->writeInt32(it->sampleDescriptionId);
1470            }
1471          mOwner->endBox();  // stsc
1472
1473          mOwner->beginBox("co64");
1474            mOwner->writeInt32(0);  // version=0, flags=0
1475            mOwner->writeInt32(mChunkOffsets.size());
1476            for (List<off_t>::iterator it = mChunkOffsets.begin();
1477                 it != mChunkOffsets.end(); ++it) {
1478                mOwner->writeInt64((*it));
1479            }
1480          mOwner->endBox();  // co64
1481
1482        mOwner->endBox();  // stbl
1483      mOwner->endBox();  // mdia
1484    mOwner->endBox();  // trak
1485}
1486
1487}  // namespace android
1488