| /* |
| * Copyright (C) 2009 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| //#define LOG_NDEBUG 0 |
| #define LOG_TAG "MPEG4Writer" |
| |
| #include <arpa/inet.h> |
| #include <fcntl.h> |
| #include <inttypes.h> |
| #include <pthread.h> |
| #include <sys/prctl.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| |
| #include <utils/Log.h> |
| |
| #include <media/stagefright/foundation/ADebug.h> |
| #include <media/stagefright/foundation/AMessage.h> |
| #include <media/stagefright/MPEG4Writer.h> |
| #include <media/stagefright/MediaBuffer.h> |
| #include <media/stagefright/MetaData.h> |
| #include <media/stagefright/MediaDefs.h> |
| #include <media/stagefright/MediaErrors.h> |
| #include <media/stagefright/MediaSource.h> |
| #include <media/stagefright/Utils.h> |
| #include <media/mediarecorder.h> |
| #include <cutils/properties.h> |
| |
| #include "include/ESDS.h" |
| |
| |
| #ifndef __predict_false |
| #define __predict_false(exp) __builtin_expect((exp) != 0, 0) |
| #endif |
| |
| #define WARN_UNLESS(condition, message, ...) \ |
| ( (__predict_false(condition)) ? false : ({ \ |
| ALOGW("Condition %s failed " message, #condition, ##__VA_ARGS__); \ |
| true; \ |
| })) |
| |
| namespace android { |
| |
| static const int64_t kMinStreamableFileSizeInBytes = 5 * 1024 * 1024; |
| static const int64_t kMax32BitFileSize = 0x00ffffffffLL; // 2^32-1 : max FAT32 |
| // filesystem file size |
| // used by most SD cards |
| static const uint8_t kNalUnitTypeSeqParamSet = 0x07; |
| static const uint8_t kNalUnitTypePicParamSet = 0x08; |
| static const int64_t kInitialDelayTimeUs = 700000LL; |
| |
| static const char kMetaKey_Model[] = "com.android.model"; |
| static const char kMetaKey_Version[] = "com.android.version"; |
| static const char kMetaKey_Build[] = "com.android.build"; |
| static const char kMetaKey_CaptureFps[] = "com.android.capture.fps"; |
| |
| /* uncomment to include model and build in meta */ |
| //#define SHOW_MODEL_BUILD 1 |
| |
| class MPEG4Writer::Track { |
| public: |
| Track(MPEG4Writer *owner, const sp<MediaSource> &source, size_t trackId); |
| |
| ~Track(); |
| |
| status_t start(MetaData *params); |
| status_t stop(); |
| status_t pause(); |
| bool reachedEOS(); |
| |
| int64_t getDurationUs() const; |
| int64_t getEstimatedTrackSizeBytes() const; |
| void writeTrackHeader(bool use32BitOffset = true); |
| void bufferChunk(int64_t timestampUs); |
| bool isAvc() const { return mIsAvc; } |
| bool isAudio() const { return mIsAudio; } |
| bool isMPEG4() const { return mIsMPEG4; } |
| void addChunkOffset(off64_t offset); |
| int32_t getTrackId() const { return mTrackId; } |
| status_t dump(int fd, const Vector<String16>& args) const; |
| |
| private: |
| enum { |
| kMaxCttsOffsetTimeUs = 1000000LL, // 1 second |
| kSampleArraySize = 1000, |
| }; |
| |
| // A helper class to handle faster write box with table entries |
| template<class TYPE> |
| struct ListTableEntries { |
| ListTableEntries(uint32_t elementCapacity, uint32_t entryCapacity) |
| : mElementCapacity(elementCapacity), |
| mEntryCapacity(entryCapacity), |
| mTotalNumTableEntries(0), |
| mNumValuesInCurrEntry(0), |
| mCurrTableEntriesElement(NULL) { |
| CHECK_GT(mElementCapacity, 0); |
| CHECK_GT(mEntryCapacity, 0); |
| } |
| |
| // Free the allocated memory. |
| ~ListTableEntries() { |
| while (!mTableEntryList.empty()) { |
| typename List<TYPE *>::iterator it = mTableEntryList.begin(); |
| delete[] (*it); |
| mTableEntryList.erase(it); |
| } |
| } |
| |
| // Replace the value at the given position by the given value. |
| // There must be an existing value at the given position. |
| // @arg value must be in network byte order |
| // @arg pos location the value must be in. |
| void set(const TYPE& value, uint32_t pos) { |
| CHECK_LT(pos, mTotalNumTableEntries * mEntryCapacity); |
| |
| typename List<TYPE *>::iterator it = mTableEntryList.begin(); |
| uint32_t iterations = (pos / (mElementCapacity * mEntryCapacity)); |
| while (it != mTableEntryList.end() && iterations > 0) { |
| ++it; |
| --iterations; |
| } |
| CHECK(it != mTableEntryList.end()); |
| CHECK_EQ(iterations, 0); |
| |
| (*it)[(pos % (mElementCapacity * mEntryCapacity))] = value; |
| } |
| |
| // Get the value at the given position by the given value. |
| // @arg value the retrieved value at the position in network byte order. |
| // @arg pos location the value must be in. |
| // @return true if a value is found. |
| bool get(TYPE& value, uint32_t pos) const { |
| if (pos >= mTotalNumTableEntries * mEntryCapacity) { |
| return false; |
| } |
| |
| typename List<TYPE *>::iterator it = mTableEntryList.begin(); |
| uint32_t iterations = (pos / (mElementCapacity * mEntryCapacity)); |
| while (it != mTableEntryList.end() && iterations > 0) { |
| ++it; |
| --iterations; |
| } |
| CHECK(it != mTableEntryList.end()); |
| CHECK_EQ(iterations, 0); |
| |
| value = (*it)[(pos % (mElementCapacity * mEntryCapacity))]; |
| return true; |
| } |
| |
| // Store a single value. |
| // @arg value must be in network byte order. |
| void add(const TYPE& value) { |
| CHECK_LT(mNumValuesInCurrEntry, mElementCapacity); |
| uint32_t nEntries = mTotalNumTableEntries % mElementCapacity; |
| uint32_t nValues = mNumValuesInCurrEntry % mEntryCapacity; |
| if (nEntries == 0 && nValues == 0) { |
| mCurrTableEntriesElement = new TYPE[mEntryCapacity * mElementCapacity]; |
| CHECK(mCurrTableEntriesElement != NULL); |
| mTableEntryList.push_back(mCurrTableEntriesElement); |
| } |
| |
| uint32_t pos = nEntries * mEntryCapacity + nValues; |
| mCurrTableEntriesElement[pos] = value; |
| |
| ++mNumValuesInCurrEntry; |
| if ((mNumValuesInCurrEntry % mEntryCapacity) == 0) { |
| ++mTotalNumTableEntries; |
| mNumValuesInCurrEntry = 0; |
| } |
| } |
| |
| // Write out the table entries: |
| // 1. the number of entries goes first |
| // 2. followed by the values in the table enties in order |
| // @arg writer the writer to actual write to the storage |
| void write(MPEG4Writer *writer) const { |
| CHECK_EQ(mNumValuesInCurrEntry % mEntryCapacity, 0); |
| uint32_t nEntries = mTotalNumTableEntries; |
| writer->writeInt32(nEntries); |
| for (typename List<TYPE *>::iterator it = mTableEntryList.begin(); |
| it != mTableEntryList.end(); ++it) { |
| CHECK_GT(nEntries, 0); |
| if (nEntries >= mElementCapacity) { |
| writer->write(*it, sizeof(TYPE) * mEntryCapacity, mElementCapacity); |
| nEntries -= mElementCapacity; |
| } else { |
| writer->write(*it, sizeof(TYPE) * mEntryCapacity, nEntries); |
| break; |
| } |
| } |
| } |
| |
| // Return the number of entries in the table. |
| uint32_t count() const { return mTotalNumTableEntries; } |
| |
| private: |
| uint32_t mElementCapacity; // # entries in an element |
| uint32_t mEntryCapacity; // # of values in each entry |
| uint32_t mTotalNumTableEntries; |
| uint32_t mNumValuesInCurrEntry; // up to mEntryCapacity |
| TYPE *mCurrTableEntriesElement; |
| mutable List<TYPE *> mTableEntryList; |
| |
| DISALLOW_EVIL_CONSTRUCTORS(ListTableEntries); |
| }; |
| |
| |
| |
| MPEG4Writer *mOwner; |
| sp<MetaData> mMeta; |
| sp<MediaSource> mSource; |
| volatile bool mDone; |
| volatile bool mPaused; |
| volatile bool mResumed; |
| volatile bool mStarted; |
| bool mIsAvc; |
| bool mIsAudio; |
| bool mIsMPEG4; |
| int32_t mTrackId; |
| int64_t mTrackDurationUs; |
| int64_t mMaxChunkDurationUs; |
| |
| int64_t mEstimatedTrackSizeBytes; |
| int64_t mMdatSizeBytes; |
| int32_t mTimeScale; |
| |
| pthread_t mThread; |
| |
| |
| List<MediaBuffer *> mChunkSamples; |
| |
| bool mSamplesHaveSameSize; |
| ListTableEntries<uint32_t> *mStszTableEntries; |
| |
| ListTableEntries<uint32_t> *mStcoTableEntries; |
| ListTableEntries<off64_t> *mCo64TableEntries; |
| ListTableEntries<uint32_t> *mStscTableEntries; |
| ListTableEntries<uint32_t> *mStssTableEntries; |
| ListTableEntries<uint32_t> *mSttsTableEntries; |
| ListTableEntries<uint32_t> *mCttsTableEntries; |
| |
| int64_t mMinCttsOffsetTimeUs; |
| int64_t mMaxCttsOffsetTimeUs; |
| |
| // Sequence parameter set or picture parameter set |
| struct AVCParamSet { |
| AVCParamSet(uint16_t length, const uint8_t *data) |
| : mLength(length), mData(data) {} |
| |
| uint16_t mLength; |
| const uint8_t *mData; |
| }; |
| List<AVCParamSet> mSeqParamSets; |
| List<AVCParamSet> mPicParamSets; |
| uint8_t mProfileIdc; |
| uint8_t mProfileCompatible; |
| uint8_t mLevelIdc; |
| |
| void *mCodecSpecificData; |
| size_t mCodecSpecificDataSize; |
| bool mGotAllCodecSpecificData; |
| bool mTrackingProgressStatus; |
| |
| bool mReachedEOS; |
| int64_t mStartTimestampUs; |
| int64_t mStartTimeRealUs; |
| int64_t mFirstSampleTimeRealUs; |
| int64_t mPreviousTrackTimeUs; |
| int64_t mTrackEveryTimeDurationUs; |
| |
| // Update the audio track's drift information. |
| void updateDriftTime(const sp<MetaData>& meta); |
| |
| int32_t getStartTimeOffsetScaledTime() const; |
| |
| static void *ThreadWrapper(void *me); |
| status_t threadEntry(); |
| |
| const uint8_t *parseParamSet( |
| const uint8_t *data, size_t length, int type, size_t *paramSetLen); |
| |
| status_t makeAVCCodecSpecificData(const uint8_t *data, size_t size); |
| status_t copyAVCCodecSpecificData(const uint8_t *data, size_t size); |
| status_t parseAVCCodecSpecificData(const uint8_t *data, size_t size); |
| |
| // Track authoring progress status |
| void trackProgressStatus(int64_t timeUs, status_t err = OK); |
| void initTrackingProgressStatus(MetaData *params); |
| |
| void getCodecSpecificDataFromInputFormatIfPossible(); |
| |
| // Determine the track time scale |
| // If it is an audio track, try to use the sampling rate as |
| // the time scale; however, if user chooses the overwrite |
| // value, the user-supplied time scale will be used. |
| void setTimeScale(); |
| |
| // Simple validation on the codec specific data |
| status_t checkCodecSpecificData() const; |
| int32_t mRotation; |
| |
| void updateTrackSizeEstimate(); |
| void addOneStscTableEntry(size_t chunkId, size_t sampleId); |
| void addOneStssTableEntry(size_t sampleId); |
| |
| // Duration is time scale based |
| void addOneSttsTableEntry(size_t sampleCount, int32_t timescaledDur); |
| void addOneCttsTableEntry(size_t sampleCount, int32_t timescaledDur); |
| |
| bool isTrackMalFormed() const; |
| void sendTrackSummary(bool hasMultipleTracks); |
| |
| // Write the boxes |
| void writeStcoBox(bool use32BitOffset); |
| void writeStscBox(); |
| void writeStszBox(); |
| void writeStssBox(); |
| void writeSttsBox(); |
| void writeCttsBox(); |
| void writeD263Box(); |
| void writePaspBox(); |
| void writeAvccBox(); |
| void writeUrlBox(); |
| void writeDrefBox(); |
| void writeDinfBox(); |
| void writeDamrBox(); |
| void writeMdhdBox(uint32_t now); |
| void writeSmhdBox(); |
| void writeVmhdBox(); |
| void writeHdlrBox(); |
| void writeTkhdBox(uint32_t now); |
| void writeMp4aEsdsBox(); |
| void writeMp4vEsdsBox(); |
| void writeAudioFourCCBox(); |
| void writeVideoFourCCBox(); |
| void writeStblBox(bool use32BitOffset); |
| |
| Track(const Track &); |
| Track &operator=(const Track &); |
| }; |
| |
| MPEG4Writer::MPEG4Writer(int fd) |
| : mFd(dup(fd)), |
| mInitCheck(mFd < 0? NO_INIT: OK), |
| mIsRealTimeRecording(true), |
| mUse4ByteNalLength(true), |
| mUse32BitOffset(true), |
| mIsFileSizeLimitExplicitlyRequested(false), |
| mPaused(false), |
| mStarted(false), |
| mWriterThreadStarted(false), |
| mOffset(0), |
| mMdatOffset(0), |
| mEstimatedMoovBoxSize(0), |
| mMoovExtraSize(0), |
| mInterleaveDurationUs(1000000), |
| mLatitudex10000(0), |
| mLongitudex10000(0), |
| mAreGeoTagsAvailable(false), |
| mStartTimeOffsetMs(-1), |
| mMetaKeys(new AMessage()) { |
| addDeviceMeta(); |
| } |
| |
| MPEG4Writer::~MPEG4Writer() { |
| reset(); |
| |
| while (!mTracks.empty()) { |
| List<Track *>::iterator it = mTracks.begin(); |
| delete *it; |
| (*it) = NULL; |
| mTracks.erase(it); |
| } |
| mTracks.clear(); |
| } |
| |
| status_t MPEG4Writer::dump( |
| int fd, const Vector<String16>& args) { |
| const size_t SIZE = 256; |
| char buffer[SIZE]; |
| String8 result; |
| snprintf(buffer, SIZE, " MPEG4Writer %p\n", this); |
| result.append(buffer); |
| snprintf(buffer, SIZE, " mStarted: %s\n", mStarted? "true": "false"); |
| result.append(buffer); |
| ::write(fd, result.string(), result.size()); |
| for (List<Track *>::iterator it = mTracks.begin(); |
| it != mTracks.end(); ++it) { |
| (*it)->dump(fd, args); |
| } |
| return OK; |
| } |
| |
| status_t MPEG4Writer::Track::dump( |
| int fd, const Vector<String16>& /* args */) const { |
| const size_t SIZE = 256; |
| char buffer[SIZE]; |
| String8 result; |
| snprintf(buffer, SIZE, " %s track\n", mIsAudio? "Audio": "Video"); |
| result.append(buffer); |
| snprintf(buffer, SIZE, " reached EOS: %s\n", |
| mReachedEOS? "true": "false"); |
| result.append(buffer); |
| snprintf(buffer, SIZE, " frames encoded : %d\n", mStszTableEntries->count()); |
| result.append(buffer); |
| snprintf(buffer, SIZE, " duration encoded : %" PRId64 " us\n", mTrackDurationUs); |
| result.append(buffer); |
| ::write(fd, result.string(), result.size()); |
| return OK; |
| } |
| |
| status_t MPEG4Writer::addSource(const sp<MediaSource> &source) { |
| Mutex::Autolock l(mLock); |
| if (mStarted) { |
| ALOGE("Attempt to add source AFTER recording is started"); |
| return UNKNOWN_ERROR; |
| } |
| |
| // At most 2 tracks can be supported. |
| if (mTracks.size() >= 2) { |
| ALOGE("Too many tracks (%zu) to add", mTracks.size()); |
| return ERROR_UNSUPPORTED; |
| } |
| |
| CHECK(source.get() != NULL); |
| |
| // A track of type other than video or audio is not supported. |
| const char *mime; |
| source->getFormat()->findCString(kKeyMIMEType, &mime); |
| bool isAudio = !strncasecmp(mime, "audio/", 6); |
| bool isVideo = !strncasecmp(mime, "video/", 6); |
| if (!isAudio && !isVideo) { |
| ALOGE("Track (%s) other than video or audio is not supported", |
| mime); |
| return ERROR_UNSUPPORTED; |
| } |
| |
| // At this point, we know the track to be added is either |
| // video or audio. Thus, we only need to check whether it |
| // is an audio track or not (if it is not, then it must be |
| // a video track). |
| |
| // No more than one video or one audio track is supported. |
| for (List<Track*>::iterator it = mTracks.begin(); |
| it != mTracks.end(); ++it) { |
| if ((*it)->isAudio() == isAudio) { |
| ALOGE("%s track already exists", isAudio? "Audio": "Video"); |
| return ERROR_UNSUPPORTED; |
| } |
| } |
| |
| // This is the first track of either audio or video. |
| // Go ahead to add the track. |
| Track *track = new Track(this, source, 1 + mTracks.size()); |
| mTracks.push_back(track); |
| |
| return OK; |
| } |
| |
| status_t MPEG4Writer::startTracks(MetaData *params) { |
| if (mTracks.empty()) { |
| ALOGE("No source added"); |
| return INVALID_OPERATION; |
| } |
| |
| for (List<Track *>::iterator it = mTracks.begin(); |
| it != mTracks.end(); ++it) { |
| status_t err = (*it)->start(params); |
| |
| if (err != OK) { |
| for (List<Track *>::iterator it2 = mTracks.begin(); |
| it2 != it; ++it2) { |
| (*it2)->stop(); |
| } |
| |
| return err; |
| } |
| } |
| return OK; |
| } |
| |
| void MPEG4Writer::addDeviceMeta() { |
| // add device info and estimate space in 'moov' |
| char val[PROPERTY_VALUE_MAX]; |
| size_t n; |
| // meta size is estimated by adding up the following: |
| // - meta header structures, which occur only once (total 66 bytes) |
| // - size for each key, which consists of a fixed header (32 bytes), |
| // plus key length and data length. |
| mMoovExtraSize += 66; |
| if (property_get("ro.build.version.release", val, NULL) |
| && (n = strlen(val)) > 0) { |
| mMetaKeys->setString(kMetaKey_Version, val, n + 1); |
| mMoovExtraSize += sizeof(kMetaKey_Version) + n + 32; |
| } |
| #ifdef SHOW_MODEL_BUILD |
| if (property_get("ro.product.model", val, NULL) |
| && (n = strlen(val)) > 0) { |
| mMetaKeys->setString(kMetaKey_Model, val, n + 1); |
| mMoovExtraSize += sizeof(kMetaKey_Model) + n + 32; |
| } |
| if (property_get("ro.build.display.id", val, NULL) |
| && (n = strlen(val)) > 0) { |
| mMetaKeys->setString(kMetaKey_Build, val, n + 1); |
| mMoovExtraSize += sizeof(kMetaKey_Build) + n + 32; |
| } |
| #endif |
| } |
| |
| int64_t MPEG4Writer::estimateMoovBoxSize(int32_t bitRate) { |
| // This implementation is highly experimental/heurisitic. |
| // |
| // Statistical analysis shows that metadata usually accounts |
| // for a small portion of the total file size, usually < 0.6%. |
| |
| // The default MIN_MOOV_BOX_SIZE is set to 0.6% x 1MB / 2, |
| // where 1MB is the common file size limit for MMS application. |
| // The default MAX _MOOV_BOX_SIZE value is based on about 3 |
| // minute video recording with a bit rate about 3 Mbps, because |
| // statistics also show that most of the video captured are going |
| // to be less than 3 minutes. |
| |
| // If the estimation is wrong, we will pay the price of wasting |
| // some reserved space. This should not happen so often statistically. |
| static const int32_t factor = mUse32BitOffset? 1: 2; |
| static const int64_t MIN_MOOV_BOX_SIZE = 3 * 1024; // 3 KB |
| static const int64_t MAX_MOOV_BOX_SIZE = (180 * 3000000 * 6LL / 8000); |
| int64_t size = MIN_MOOV_BOX_SIZE; |
| |
| // Max file size limit is set |
| if (mMaxFileSizeLimitBytes != 0 && mIsFileSizeLimitExplicitlyRequested) { |
| size = mMaxFileSizeLimitBytes * 6 / 1000; |
| } |
| |
| // Max file duration limit is set |
| if (mMaxFileDurationLimitUs != 0) { |
| if (bitRate > 0) { |
| int64_t size2 = |
| ((mMaxFileDurationLimitUs * bitRate * 6) / 1000 / 8000000); |
| if (mMaxFileSizeLimitBytes != 0 && mIsFileSizeLimitExplicitlyRequested) { |
| // When both file size and duration limits are set, |
| // we use the smaller limit of the two. |
| if (size > size2) { |
| size = size2; |
| } |
| } else { |
| // Only max file duration limit is set |
| size = size2; |
| } |
| } |
| } |
| |
| if (size < MIN_MOOV_BOX_SIZE) { |
| size = MIN_MOOV_BOX_SIZE; |
| } |
| |
| // Any long duration recording will be probably end up with |
| // non-streamable mp4 file. |
| if (size > MAX_MOOV_BOX_SIZE) { |
| size = MAX_MOOV_BOX_SIZE; |
| } |
| |
| // Account for the extra stuff (Geo, meta keys, etc.) |
| size += mMoovExtraSize; |
| |
| ALOGI("limits: %" PRId64 "/%" PRId64 " bytes/us, bit rate: %d bps and the" |
| " estimated moov size %" PRId64 " bytes", |
| mMaxFileSizeLimitBytes, mMaxFileDurationLimitUs, bitRate, size); |
| return factor * size; |
| } |
| |
| status_t MPEG4Writer::start(MetaData *param) { |
| if (mInitCheck != OK) { |
| return UNKNOWN_ERROR; |
| } |
| |
| /* |
| * Check mMaxFileSizeLimitBytes at the beginning |
| * since mMaxFileSizeLimitBytes may be implicitly |
| * changed later for 32-bit file offset even if |
| * user does not ask to set it explicitly. |
| */ |
| if (mMaxFileSizeLimitBytes != 0) { |
| mIsFileSizeLimitExplicitlyRequested = true; |
| } |
| |
| int32_t use64BitOffset; |
| if (param && |
| param->findInt32(kKey64BitFileOffset, &use64BitOffset) && |
| use64BitOffset) { |
| mUse32BitOffset = false; |
| } |
| |
| if (mUse32BitOffset) { |
| // Implicit 32 bit file size limit |
| if (mMaxFileSizeLimitBytes == 0) { |
| mMaxFileSizeLimitBytes = kMax32BitFileSize; |
| } |
| |
| // If file size is set to be larger than the 32 bit file |
| // size limit, treat it as an error. |
| if (mMaxFileSizeLimitBytes > kMax32BitFileSize) { |
| ALOGW("32-bit file size limit (%" PRId64 " bytes) too big. " |
| "It is changed to %" PRId64 " bytes", |
| mMaxFileSizeLimitBytes, kMax32BitFileSize); |
| mMaxFileSizeLimitBytes = kMax32BitFileSize; |
| } |
| } |
| |
| int32_t use2ByteNalLength; |
| if (param && |
| param->findInt32(kKey2ByteNalLength, &use2ByteNalLength) && |
| use2ByteNalLength) { |
| mUse4ByteNalLength = false; |
| } |
| |
| int32_t isRealTimeRecording; |
| if (param && param->findInt32(kKeyRealTimeRecording, &isRealTimeRecording)) { |
| mIsRealTimeRecording = isRealTimeRecording; |
| } |
| |
| mStartTimestampUs = -1; |
| |
| if (mStarted) { |
| if (mPaused) { |
| mPaused = false; |
| return startTracks(param); |
| } |
| return OK; |
| } |
| |
| if (!param || |
| !param->findInt32(kKeyTimeScale, &mTimeScale)) { |
| mTimeScale = 1000; |
| } |
| CHECK_GT(mTimeScale, 0); |
| ALOGV("movie time scale: %d", mTimeScale); |
| |
| /* |
| * When the requested file size limit is small, the priority |
| * is to meet the file size limit requirement, rather than |
| * to make the file streamable. mStreamableFile does not tell |
| * whether the actual recorded file is streamable or not. |
| */ |
| mStreamableFile = |
| (mMaxFileSizeLimitBytes != 0 && |
| mMaxFileSizeLimitBytes >= kMinStreamableFileSizeInBytes); |
| |
| /* |
| * mWriteMoovBoxToMemory is true if the amount of data in moov box is |
| * smaller than the reserved free space at the beginning of a file, AND |
| * when the content of moov box is constructed. Note that video/audio |
| * frame data is always written to the file but not in the memory. |
| * |
| * Before stop()/reset() is called, mWriteMoovBoxToMemory is always |
| * false. When reset() is called at the end of a recording session, |
| * Moov box needs to be constructed. |
| * |
| * 1) Right before a moov box is constructed, mWriteMoovBoxToMemory |
| * to set to mStreamableFile so that if |
| * the file is intended to be streamable, it is set to true; |
| * otherwise, it is set to false. When the value is set to false, |
| * all the content of the moov box is written immediately to |
| * the end of the file. When the value is set to true, all the |
| * content of the moov box is written to an in-memory cache, |
| * mMoovBoxBuffer, util the following condition happens. Note |
| * that the size of the in-memory cache is the same as the |
| * reserved free space at the beginning of the file. |
| * |
| * 2) While the data of the moov box is written to an in-memory |
| * cache, the data size is checked against the reserved space. |
| * If the data size surpasses the reserved space, subsequent moov |
| * data could no longer be hold in the in-memory cache. This also |
| * indicates that the reserved space was too small. At this point, |
| * _all_ moov data must be written to the end of the file. |
| * mWriteMoovBoxToMemory must be set to false to direct the write |
| * to the file. |
| * |
| * 3) If the data size in moov box is smaller than the reserved |
| * space after moov box is completely constructed, the in-memory |
| * cache copy of the moov box is written to the reserved free |
| * space. Thus, immediately after the moov is completedly |
| * constructed, mWriteMoovBoxToMemory is always set to false. |
| */ |
| mWriteMoovBoxToMemory = false; |
| mMoovBoxBuffer = NULL; |
| mMoovBoxBufferOffset = 0; |
| |
| writeFtypBox(param); |
| |
| mFreeBoxOffset = mOffset; |
| |
| if (mEstimatedMoovBoxSize == 0) { |
| int32_t bitRate = -1; |
| if (param) { |
| param->findInt32(kKeyBitRate, &bitRate); |
| } |
| mEstimatedMoovBoxSize = estimateMoovBoxSize(bitRate); |
| } |
| CHECK_GE(mEstimatedMoovBoxSize, 8); |
| if (mStreamableFile) { |
| // Reserve a 'free' box only for streamable file |
| lseek64(mFd, mFreeBoxOffset, SEEK_SET); |
| writeInt32(mEstimatedMoovBoxSize); |
| write("free", 4); |
| mMdatOffset = mFreeBoxOffset + mEstimatedMoovBoxSize; |
| } else { |
| mMdatOffset = mOffset; |
| } |
| |
| mOffset = mMdatOffset; |
| lseek64(mFd, mMdatOffset, SEEK_SET); |
| if (mUse32BitOffset) { |
| write("????mdat", 8); |
| } else { |
| write("\x00\x00\x00\x01mdat????????", 16); |
| } |
| |
| status_t err = startWriterThread(); |
| if (err != OK) { |
| return err; |
| } |
| |
| err = startTracks(param); |
| if (err != OK) { |
| return err; |
| } |
| |
| mStarted = true; |
| return OK; |
| } |
| |
| bool MPEG4Writer::use32BitFileOffset() const { |
| return mUse32BitOffset; |
| } |
| |
| status_t MPEG4Writer::pause() { |
| if (mInitCheck != OK) { |
| return OK; |
| } |
| mPaused = true; |
| status_t err = OK; |
| for (List<Track *>::iterator it = mTracks.begin(); |
| it != mTracks.end(); ++it) { |
| status_t status = (*it)->pause(); |
| if (status != OK) { |
| err = status; |
| } |
| } |
| return err; |
| } |
| |
| void MPEG4Writer::stopWriterThread() { |
| ALOGD("Stopping writer thread"); |
| if (!mWriterThreadStarted) { |
| return; |
| } |
| |
| { |
| Mutex::Autolock autolock(mLock); |
| |
| mDone = true; |
| mChunkReadyCondition.signal(); |
| } |
| |
| void *dummy; |
| pthread_join(mThread, &dummy); |
| mWriterThreadStarted = false; |
| ALOGD("Writer thread stopped"); |
| } |
| |
| /* |
| * MP4 file standard defines a composition matrix: |
| * | a b u | |
| * | c d v | |
| * | x y w | |
| * |
| * the element in the matrix is stored in the following |
| * order: {a, b, u, c, d, v, x, y, w}, |
| * where a, b, c, d, x, and y is in 16.16 format, while |
| * u, v and w is in 2.30 format. |
| */ |
| void MPEG4Writer::writeCompositionMatrix(int degrees) { |
| ALOGV("writeCompositionMatrix"); |
| uint32_t a = 0x00010000; |
| uint32_t b = 0; |
| uint32_t c = 0; |
| uint32_t d = 0x00010000; |
| switch (degrees) { |
| case 0: |
| break; |
| case 90: |
| a = 0; |
| b = 0x00010000; |
| c = 0xFFFF0000; |
| d = 0; |
| break; |
| case 180: |
| a = 0xFFFF0000; |
| d = 0xFFFF0000; |
| break; |
| case 270: |
| a = 0; |
| b = 0xFFFF0000; |
| c = 0x00010000; |
| d = 0; |
| break; |
| default: |
| CHECK(!"Should never reach this unknown rotation"); |
| break; |
| } |
| |
| writeInt32(a); // a |
| writeInt32(b); // b |
| writeInt32(0); // u |
| writeInt32(c); // c |
| writeInt32(d); // d |
| writeInt32(0); // v |
| writeInt32(0); // x |
| writeInt32(0); // y |
| writeInt32(0x40000000); // w |
| } |
| |
| void MPEG4Writer::release() { |
| close(mFd); |
| mFd = -1; |
| mInitCheck = NO_INIT; |
| mStarted = false; |
| free(mMoovBoxBuffer); |
| mMoovBoxBuffer = NULL; |
| } |
| |
| status_t MPEG4Writer::reset() { |
| if (mInitCheck != OK) { |
| return OK; |
| } else { |
| if (!mWriterThreadStarted || |
| !mStarted) { |
| if (mWriterThreadStarted) { |
| stopWriterThread(); |
| } |
| release(); |
| return OK; |
| } |
| } |
| |
| status_t err = OK; |
| int64_t maxDurationUs = 0; |
| int64_t minDurationUs = 0x7fffffffffffffffLL; |
| for (List<Track *>::iterator it = mTracks.begin(); |
| it != mTracks.end(); ++it) { |
| status_t status = (*it)->stop(); |
| if (err == OK && status != OK) { |
| err = status; |
| } |
| |
| int64_t durationUs = (*it)->getDurationUs(); |
| if (durationUs > maxDurationUs) { |
| maxDurationUs = durationUs; |
| } |
| if (durationUs < minDurationUs) { |
| minDurationUs = durationUs; |
| } |
| } |
| |
| if (mTracks.size() > 1) { |
| ALOGD("Duration from tracks range is [%" PRId64 ", %" PRId64 "] us", |
| minDurationUs, maxDurationUs); |
| } |
| |
| stopWriterThread(); |
| |
| // Do not write out movie header on error. |
| if (err != OK) { |
| release(); |
| return err; |
| } |
| |
| // Fix up the size of the 'mdat' chunk. |
| if (mUse32BitOffset) { |
| lseek64(mFd, mMdatOffset, SEEK_SET); |
| uint32_t size = htonl(static_cast<uint32_t>(mOffset - mMdatOffset)); |
| ::write(mFd, &size, 4); |
| } else { |
| lseek64(mFd, mMdatOffset + 8, SEEK_SET); |
| uint64_t size = mOffset - mMdatOffset; |
| size = hton64(size); |
| ::write(mFd, &size, 8); |
| } |
| lseek64(mFd, mOffset, SEEK_SET); |
| |
| // Construct moov box now |
| mMoovBoxBufferOffset = 0; |
| mWriteMoovBoxToMemory = mStreamableFile; |
| if (mWriteMoovBoxToMemory) { |
| // There is no need to allocate in-memory cache |
| // for moov box if the file is not streamable. |
| |
| mMoovBoxBuffer = (uint8_t *) malloc(mEstimatedMoovBoxSize); |
| CHECK(mMoovBoxBuffer != NULL); |
| } |
| writeMoovBox(maxDurationUs); |
| |
| // mWriteMoovBoxToMemory could be set to false in |
| // MPEG4Writer::write() method |
| if (mWriteMoovBoxToMemory) { |
| mWriteMoovBoxToMemory = false; |
| // Content of the moov box is saved in the cache, and the in-memory |
| // moov box needs to be written to the file in a single shot. |
| |
| CHECK_LE(mMoovBoxBufferOffset + 8, mEstimatedMoovBoxSize); |
| |
| // Moov box |
| lseek64(mFd, mFreeBoxOffset, SEEK_SET); |
| mOffset = mFreeBoxOffset; |
| write(mMoovBoxBuffer, 1, mMoovBoxBufferOffset); |
| |
| // Free box |
| lseek64(mFd, mOffset, SEEK_SET); |
| writeInt32(mEstimatedMoovBoxSize - mMoovBoxBufferOffset); |
| write("free", 4); |
| } else { |
| ALOGI("The mp4 file will not be streamable."); |
| } |
| |
| // Free in-memory cache for moov box |
| if (mMoovBoxBuffer != NULL) { |
| free(mMoovBoxBuffer); |
| mMoovBoxBuffer = NULL; |
| mMoovBoxBufferOffset = 0; |
| } |
| |
| CHECK(mBoxes.empty()); |
| |
| release(); |
| return err; |
| } |
| |
| uint32_t MPEG4Writer::getMpeg4Time() { |
| time_t now = time(NULL); |
| // MP4 file uses time counting seconds since midnight, Jan. 1, 1904 |
| // while time function returns Unix epoch values which starts |
| // at 1970-01-01. Lets add the number of seconds between them |
| uint32_t mpeg4Time = now + (66 * 365 + 17) * (24 * 60 * 60); |
| return mpeg4Time; |
| } |
| |
| void MPEG4Writer::writeMvhdBox(int64_t durationUs) { |
| uint32_t now = getMpeg4Time(); |
| beginBox("mvhd"); |
| writeInt32(0); // version=0, flags=0 |
| writeInt32(now); // creation time |
| writeInt32(now); // modification time |
| writeInt32(mTimeScale); // mvhd timescale |
| int32_t duration = (durationUs * mTimeScale + 5E5) / 1E6; |
| writeInt32(duration); |
| writeInt32(0x10000); // rate: 1.0 |
| writeInt16(0x100); // volume |
| writeInt16(0); // reserved |
| writeInt32(0); // reserved |
| writeInt32(0); // reserved |
| writeCompositionMatrix(0); // matrix |
| writeInt32(0); // predefined |
| writeInt32(0); // predefined |
| writeInt32(0); // predefined |
| writeInt32(0); // predefined |
| writeInt32(0); // predefined |
| writeInt32(0); // predefined |
| writeInt32(mTracks.size() + 1); // nextTrackID |
| endBox(); // mvhd |
| } |
| |
| void MPEG4Writer::writeMoovBox(int64_t durationUs) { |
| beginBox("moov"); |
| writeMvhdBox(durationUs); |
| if (mAreGeoTagsAvailable) { |
| writeUdtaBox(); |
| } |
| writeMetaBox(); |
| int32_t id = 1; |
| for (List<Track *>::iterator it = mTracks.begin(); |
| it != mTracks.end(); ++it, ++id) { |
| (*it)->writeTrackHeader(mUse32BitOffset); |
| } |
| endBox(); // moov |
| } |
| |
| void MPEG4Writer::writeFtypBox(MetaData *param) { |
| beginBox("ftyp"); |
| |
| int32_t fileType; |
| if (param && param->findInt32(kKeyFileType, &fileType) && |
| fileType != OUTPUT_FORMAT_MPEG_4) { |
| writeFourcc("3gp4"); |
| writeInt32(0); |
| writeFourcc("isom"); |
| writeFourcc("3gp4"); |
| } else { |
| writeFourcc("mp42"); |
| writeInt32(0); |
| writeFourcc("isom"); |
| writeFourcc("mp42"); |
| } |
| |
| endBox(); |
| } |
| |
| static bool isTestModeEnabled() { |
| #if (PROPERTY_VALUE_MAX < 5) |
| #error "PROPERTY_VALUE_MAX must be at least 5" |
| #endif |
| |
| // Test mode is enabled only if rw.media.record.test system |
| // property is enabled. |
| char value[PROPERTY_VALUE_MAX]; |
| if (property_get("rw.media.record.test", value, NULL) && |
| (!strcasecmp(value, "true") || !strcasecmp(value, "1"))) { |
| return true; |
| } |
| return false; |
| } |
| |
| void MPEG4Writer::sendSessionSummary() { |
| // Send session summary only if test mode is enabled |
| if (!isTestModeEnabled()) { |
| return; |
| } |
| |
| for (List<ChunkInfo>::iterator it = mChunkInfos.begin(); |
| it != mChunkInfos.end(); ++it) { |
| int trackNum = it->mTrack->getTrackId() << 28; |
| notify(MEDIA_RECORDER_TRACK_EVENT_INFO, |
| trackNum | MEDIA_RECORDER_TRACK_INTER_CHUNK_TIME_MS, |
| it->mMaxInterChunkDurUs); |
| } |
| } |
| |
| status_t MPEG4Writer::setInterleaveDuration(uint32_t durationUs) { |
| mInterleaveDurationUs = durationUs; |
| return OK; |
| } |
| |
| void MPEG4Writer::lock() { |
| mLock.lock(); |
| } |
| |
| void MPEG4Writer::unlock() { |
| mLock.unlock(); |
| } |
| |
| off64_t MPEG4Writer::addSample_l(MediaBuffer *buffer) { |
| off64_t old_offset = mOffset; |
| |
| ::write(mFd, |
| (const uint8_t *)buffer->data() + buffer->range_offset(), |
| buffer->range_length()); |
| |
| mOffset += buffer->range_length(); |
| |
| return old_offset; |
| } |
| |
| static void StripStartcode(MediaBuffer *buffer) { |
| if (buffer->range_length() < 4) { |
| return; |
| } |
| |
| const uint8_t *ptr = |
| (const uint8_t *)buffer->data() + buffer->range_offset(); |
| |
| if (!memcmp(ptr, "\x00\x00\x00\x01", 4)) { |
| buffer->set_range( |
| buffer->range_offset() + 4, buffer->range_length() - 4); |
| } |
| } |
| |
| off64_t MPEG4Writer::addLengthPrefixedSample_l(MediaBuffer *buffer) { |
| off64_t old_offset = mOffset; |
| |
| size_t length = buffer->range_length(); |
| |
| if (mUse4ByteNalLength) { |
| uint8_t x = length >> 24; |
| ::write(mFd, &x, 1); |
| x = (length >> 16) & 0xff; |
| ::write(mFd, &x, 1); |
| x = (length >> 8) & 0xff; |
| ::write(mFd, &x, 1); |
| x = length & 0xff; |
| ::write(mFd, &x, 1); |
| |
| ::write(mFd, |
| (const uint8_t *)buffer->data() + buffer->range_offset(), |
| length); |
| |
| mOffset += length + 4; |
| } else { |
| CHECK_LT(length, 65536); |
| |
| uint8_t x = length >> 8; |
| ::write(mFd, &x, 1); |
| x = length & 0xff; |
| ::write(mFd, &x, 1); |
| ::write(mFd, (const uint8_t *)buffer->data() + buffer->range_offset(), length); |
| mOffset += length + 2; |
| } |
| |
| return old_offset; |
| } |
| |
| size_t MPEG4Writer::write( |
| const void *ptr, size_t size, size_t nmemb) { |
| |
| const size_t bytes = size * nmemb; |
| if (mWriteMoovBoxToMemory) { |
| |
| off64_t moovBoxSize = 8 + mMoovBoxBufferOffset + bytes; |
| if (moovBoxSize > mEstimatedMoovBoxSize) { |
| // The reserved moov box at the beginning of the file |
| // is not big enough. Moov box should be written to |
| // the end of the file from now on, but not to the |
| // in-memory cache. |
| |
| // We write partial moov box that is in the memory to |
| // the file first. |
| for (List<off64_t>::iterator it = mBoxes.begin(); |
| it != mBoxes.end(); ++it) { |
| (*it) += mOffset; |
| } |
| lseek64(mFd, mOffset, SEEK_SET); |
| ::write(mFd, mMoovBoxBuffer, mMoovBoxBufferOffset); |
| ::write(mFd, ptr, bytes); |
| mOffset += (bytes + mMoovBoxBufferOffset); |
| |
| // All subsequent moov box content will be written |
| // to the end of the file. |
| mWriteMoovBoxToMemory = false; |
| } else { |
| memcpy(mMoovBoxBuffer + mMoovBoxBufferOffset, ptr, bytes); |
| mMoovBoxBufferOffset += bytes; |
| } |
| } else { |
| ::write(mFd, ptr, size * nmemb); |
| mOffset += bytes; |
| } |
| return bytes; |
| } |
| |
| void MPEG4Writer::beginBox(uint32_t id) { |
| mBoxes.push_back(mWriteMoovBoxToMemory? |
| mMoovBoxBufferOffset: mOffset); |
| |
| writeInt32(0); |
| writeInt32(id); |
| } |
| |
| void MPEG4Writer::beginBox(const char *fourcc) { |
| CHECK_EQ(strlen(fourcc), 4); |
| |
| mBoxes.push_back(mWriteMoovBoxToMemory? |
| mMoovBoxBufferOffset: mOffset); |
| |
| writeInt32(0); |
| writeFourcc(fourcc); |
| } |
| |
| void MPEG4Writer::endBox() { |
| CHECK(!mBoxes.empty()); |
| |
| off64_t offset = *--mBoxes.end(); |
| mBoxes.erase(--mBoxes.end()); |
| |
| if (mWriteMoovBoxToMemory) { |
| int32_t x = htonl(mMoovBoxBufferOffset - offset); |
| memcpy(mMoovBoxBuffer + offset, &x, 4); |
| } else { |
| lseek64(mFd, offset, SEEK_SET); |
| writeInt32(mOffset - offset); |
| mOffset -= 4; |
| lseek64(mFd, mOffset, SEEK_SET); |
| } |
| } |
| |
| void MPEG4Writer::writeInt8(int8_t x) { |
| write(&x, 1, 1); |
| } |
| |
| void MPEG4Writer::writeInt16(int16_t x) { |
| x = htons(x); |
| write(&x, 1, 2); |
| } |
| |
| void MPEG4Writer::writeInt32(int32_t x) { |
| x = htonl(x); |
| write(&x, 1, 4); |
| } |
| |
| void MPEG4Writer::writeInt64(int64_t x) { |
| x = hton64(x); |
| write(&x, 1, 8); |
| } |
| |
| void MPEG4Writer::writeCString(const char *s) { |
| size_t n = strlen(s); |
| write(s, 1, n + 1); |
| } |
| |
| void MPEG4Writer::writeFourcc(const char *s) { |
| CHECK_EQ(strlen(s), 4); |
| write(s, 1, 4); |
| } |
| |
| |
| // Written in +/-DD.DDDD format |
| void MPEG4Writer::writeLatitude(int degreex10000) { |
| bool isNegative = (degreex10000 < 0); |
| char sign = isNegative? '-': '+'; |
| |
| // Handle the whole part |
| char str[9]; |
| int wholePart = degreex10000 / 10000; |
| if (wholePart == 0) { |
| snprintf(str, 5, "%c%.2d.", sign, wholePart); |
| } else { |
| snprintf(str, 5, "%+.2d.", wholePart); |
| } |
| |
| // Handle the fractional part |
| int fractionalPart = degreex10000 - (wholePart * 10000); |
| if (fractionalPart < 0) { |
| fractionalPart = -fractionalPart; |
| } |
| snprintf(&str[4], 5, "%.4d", fractionalPart); |
| |
| // Do not write the null terminator |
| write(str, 1, 8); |
| } |
| |
| // Written in +/- DDD.DDDD format |
| void MPEG4Writer::writeLongitude(int degreex10000) { |
| bool isNegative = (degreex10000 < 0); |
| char sign = isNegative? '-': '+'; |
| |
| // Handle the whole part |
| char str[10]; |
| int wholePart = degreex10000 / 10000; |
| if (wholePart == 0) { |
| snprintf(str, 6, "%c%.3d.", sign, wholePart); |
| } else { |
| snprintf(str, 6, "%+.3d.", wholePart); |
| } |
| |
| // Handle the fractional part |
| int fractionalPart = degreex10000 - (wholePart * 10000); |
| if (fractionalPart < 0) { |
| fractionalPart = -fractionalPart; |
| } |
| snprintf(&str[5], 5, "%.4d", fractionalPart); |
| |
| // Do not write the null terminator |
| write(str, 1, 9); |
| } |
| |
| /* |
| * Geodata is stored according to ISO-6709 standard. |
| * latitudex10000 is latitude in degrees times 10000, and |
| * longitudex10000 is longitude in degrees times 10000. |
| * The range for the latitude is in [-90, +90], and |
| * The range for the longitude is in [-180, +180] |
| */ |
| status_t MPEG4Writer::setGeoData(int latitudex10000, int longitudex10000) { |
| // Is latitude or longitude out of range? |
| if (latitudex10000 < -900000 || latitudex10000 > 900000 || |
| longitudex10000 < -1800000 || longitudex10000 > 1800000) { |
| return BAD_VALUE; |
| } |
| |
| mLatitudex10000 = latitudex10000; |
| mLongitudex10000 = longitudex10000; |
| mAreGeoTagsAvailable = true; |
| mMoovExtraSize += 30; |
| return OK; |
| } |
| |
| status_t MPEG4Writer::setCaptureRate(float captureFps) { |
| if (captureFps <= 0.0f) { |
| return BAD_VALUE; |
| } |
| |
| mMetaKeys->setFloat(kMetaKey_CaptureFps, captureFps); |
| mMoovExtraSize += sizeof(kMetaKey_CaptureFps) + 4 + 32; |
| |
| return OK; |
| } |
| |
| void MPEG4Writer::write(const void *data, size_t size) { |
| write(data, 1, size); |
| } |
| |
| bool MPEG4Writer::isFileStreamable() const { |
| return mStreamableFile; |
| } |
| |
| bool MPEG4Writer::exceedsFileSizeLimit() { |
| // No limit |
| if (mMaxFileSizeLimitBytes == 0) { |
| return false; |
| } |
| |
| int64_t nTotalBytesEstimate = static_cast<int64_t>(mEstimatedMoovBoxSize); |
| for (List<Track *>::iterator it = mTracks.begin(); |
| it != mTracks.end(); ++it) { |
| nTotalBytesEstimate += (*it)->getEstimatedTrackSizeBytes(); |
| } |
| |
| if (!mStreamableFile) { |
| // Add 1024 bytes as error tolerance |
| return nTotalBytesEstimate + 1024 >= mMaxFileSizeLimitBytes; |
| } |
| // Be conservative in the estimate: do not exceed 95% of |
| // the target file limit. For small target file size limit, though, |
| // this will not help. |
| return (nTotalBytesEstimate >= (95 * mMaxFileSizeLimitBytes) / 100); |
| } |
| |
| bool MPEG4Writer::exceedsFileDurationLimit() { |
| // No limit |
| if (mMaxFileDurationLimitUs == 0) { |
| return false; |
| } |
| |
| for (List<Track *>::iterator it = mTracks.begin(); |
| it != mTracks.end(); ++it) { |
| if ((*it)->getDurationUs() >= mMaxFileDurationLimitUs) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| bool MPEG4Writer::reachedEOS() { |
| bool allDone = true; |
| for (List<Track *>::iterator it = mTracks.begin(); |
| it != mTracks.end(); ++it) { |
| if (!(*it)->reachedEOS()) { |
| allDone = false; |
| break; |
| } |
| } |
| |
| return allDone; |
| } |
| |
| void MPEG4Writer::setStartTimestampUs(int64_t timeUs) { |
| ALOGI("setStartTimestampUs: %" PRId64, timeUs); |
| CHECK_GE(timeUs, 0ll); |
| Mutex::Autolock autoLock(mLock); |
| if (mStartTimestampUs < 0 || mStartTimestampUs > timeUs) { |
| mStartTimestampUs = timeUs; |
| ALOGI("Earliest track starting time: %" PRId64, mStartTimestampUs); |
| } |
| } |
| |
| int64_t MPEG4Writer::getStartTimestampUs() { |
| Mutex::Autolock autoLock(mLock); |
| return mStartTimestampUs; |
| } |
| |
| size_t MPEG4Writer::numTracks() { |
| Mutex::Autolock autolock(mLock); |
| return mTracks.size(); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| MPEG4Writer::Track::Track( |
| MPEG4Writer *owner, const sp<MediaSource> &source, size_t trackId) |
| : mOwner(owner), |
| mMeta(source->getFormat()), |
| mSource(source), |
| mDone(false), |
| mPaused(false), |
| mResumed(false), |
| mStarted(false), |
| mTrackId(trackId), |
| mTrackDurationUs(0), |
| mEstimatedTrackSizeBytes(0), |
| mSamplesHaveSameSize(true), |
| mStszTableEntries(new ListTableEntries<uint32_t>(1000, 1)), |
| mStcoTableEntries(new ListTableEntries<uint32_t>(1000, 1)), |
| mCo64TableEntries(new ListTableEntries<off64_t>(1000, 1)), |
| mStscTableEntries(new ListTableEntries<uint32_t>(1000, 3)), |
| mStssTableEntries(new ListTableEntries<uint32_t>(1000, 1)), |
| mSttsTableEntries(new ListTableEntries<uint32_t>(1000, 2)), |
| mCttsTableEntries(new ListTableEntries<uint32_t>(1000, 2)), |
| mCodecSpecificData(NULL), |
| mCodecSpecificDataSize(0), |
| mGotAllCodecSpecificData(false), |
| mReachedEOS(false), |
| mRotation(0) { |
| getCodecSpecificDataFromInputFormatIfPossible(); |
| |
| const char *mime; |
| mMeta->findCString(kKeyMIMEType, &mime); |
| mIsAvc = !strcasecmp(mime, MEDIA_MIMETYPE_VIDEO_AVC); |
| mIsAudio = !strncasecmp(mime, "audio/", 6); |
| mIsMPEG4 = !strcasecmp(mime, MEDIA_MIMETYPE_VIDEO_MPEG4) || |
| !strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_AAC); |
| |
| setTimeScale(); |
| } |
| |
| void MPEG4Writer::Track::updateTrackSizeEstimate() { |
| |
| uint32_t stcoBoxCount = (mOwner->use32BitFileOffset() |
| ? mStcoTableEntries->count() |
| : mCo64TableEntries->count()); |
| int64_t stcoBoxSizeBytes = stcoBoxCount * 4; |
| int64_t stszBoxSizeBytes = mSamplesHaveSameSize? 4: (mStszTableEntries->count() * 4); |
| |
| mEstimatedTrackSizeBytes = mMdatSizeBytes; // media data size |
| if (!mOwner->isFileStreamable()) { |
| // Reserved free space is not large enough to hold |
| // all meta data and thus wasted. |
| mEstimatedTrackSizeBytes += mStscTableEntries->count() * 12 + // stsc box size |
| mStssTableEntries->count() * 4 + // stss box size |
| mSttsTableEntries->count() * 8 + // stts box size |
| mCttsTableEntries->count() * 8 + // ctts box size |
| stcoBoxSizeBytes + // stco box size |
| stszBoxSizeBytes; // stsz box size |
| } |
| } |
| |
| void MPEG4Writer::Track::addOneStscTableEntry( |
| size_t chunkId, size_t sampleId) { |
| |
| mStscTableEntries->add(htonl(chunkId)); |
| mStscTableEntries->add(htonl(sampleId)); |
| mStscTableEntries->add(htonl(1)); |
| } |
| |
| void MPEG4Writer::Track::addOneStssTableEntry(size_t sampleId) { |
| mStssTableEntries->add(htonl(sampleId)); |
| } |
| |
| void MPEG4Writer::Track::addOneSttsTableEntry( |
| size_t sampleCount, int32_t duration) { |
| |
| if (duration == 0) { |
| ALOGW("0-duration samples found: %zu", sampleCount); |
| } |
| mSttsTableEntries->add(htonl(sampleCount)); |
| mSttsTableEntries->add(htonl(duration)); |
| } |
| |
| void MPEG4Writer::Track::addOneCttsTableEntry( |
| size_t sampleCount, int32_t duration) { |
| |
| if (mIsAudio) { |
| return; |
| } |
| mCttsTableEntries->add(htonl(sampleCount)); |
| mCttsTableEntries->add(htonl(duration)); |
| } |
| |
| void MPEG4Writer::Track::addChunkOffset(off64_t offset) { |
| if (mOwner->use32BitFileOffset()) { |
| uint32_t value = offset; |
| mStcoTableEntries->add(htonl(value)); |
| } else { |
| mCo64TableEntries->add(hton64(offset)); |
| } |
| } |
| |
| void MPEG4Writer::Track::setTimeScale() { |
| ALOGV("setTimeScale"); |
| // Default time scale |
| mTimeScale = 90000; |
| |
| if (mIsAudio) { |
| // Use the sampling rate as the default time scale for audio track. |
| int32_t sampleRate; |
| bool success = mMeta->findInt32(kKeySampleRate, &sampleRate); |
| CHECK(success); |
| mTimeScale = sampleRate; |
| } |
| |
| // If someone would like to overwrite the timescale, use user-supplied value. |
| int32_t timeScale; |
| if (mMeta->findInt32(kKeyTimeScale, &timeScale)) { |
| mTimeScale = timeScale; |
| } |
| |
| CHECK_GT(mTimeScale, 0); |
| } |
| |
| void MPEG4Writer::Track::getCodecSpecificDataFromInputFormatIfPossible() { |
| const char *mime; |
| CHECK(mMeta->findCString(kKeyMIMEType, &mime)); |
| |
| if (!strcasecmp(mime, MEDIA_MIMETYPE_VIDEO_AVC)) { |
| uint32_t type; |
| const void *data; |
| size_t size; |
| if (mMeta->findData(kKeyAVCC, &type, &data, &size)) { |
| mCodecSpecificData = malloc(size); |
| mCodecSpecificDataSize = size; |
| memcpy(mCodecSpecificData, data, size); |
| mGotAllCodecSpecificData = true; |
| } |
| } else if (!strcasecmp(mime, MEDIA_MIMETYPE_VIDEO_MPEG4) |
| || !strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_AAC)) { |
| uint32_t type; |
| const void *data; |
| size_t size; |
| if (mMeta->findData(kKeyESDS, &type, &data, &size)) { |
| ESDS esds(data, size); |
| if (esds.getCodecSpecificInfo(&data, &size) == OK) { |
| mCodecSpecificData = malloc(size); |
| mCodecSpecificDataSize = size; |
| memcpy(mCodecSpecificData, data, size); |
| mGotAllCodecSpecificData = true; |
| } |
| } |
| } |
| } |
| |
| MPEG4Writer::Track::~Track() { |
| stop(); |
| |
| delete mStszTableEntries; |
| delete mStcoTableEntries; |
| delete mCo64TableEntries; |
| delete mStscTableEntries; |
| delete mSttsTableEntries; |
| delete mStssTableEntries; |
| delete mCttsTableEntries; |
| |
| mStszTableEntries = NULL; |
| mStcoTableEntries = NULL; |
| mCo64TableEntries = NULL; |
| mStscTableEntries = NULL; |
| mSttsTableEntries = NULL; |
| mStssTableEntries = NULL; |
| mCttsTableEntries = NULL; |
| |
| if (mCodecSpecificData != NULL) { |
| free(mCodecSpecificData); |
| mCodecSpecificData = NULL; |
| } |
| } |
| |
| void MPEG4Writer::Track::initTrackingProgressStatus(MetaData *params) { |
| ALOGV("initTrackingProgressStatus"); |
| mPreviousTrackTimeUs = -1; |
| mTrackingProgressStatus = false; |
| mTrackEveryTimeDurationUs = 0; |
| { |
| int64_t timeUs; |
| if (params && params->findInt64(kKeyTrackTimeStatus, &timeUs)) { |
| ALOGV("Receive request to track progress status for every %" PRId64 " us", timeUs); |
| mTrackEveryTimeDurationUs = timeUs; |
| mTrackingProgressStatus = true; |
| } |
| } |
| } |
| |
| // static |
| void *MPEG4Writer::ThreadWrapper(void *me) { |
| ALOGV("ThreadWrapper: %p", me); |
| MPEG4Writer *writer = static_cast<MPEG4Writer *>(me); |
| writer->threadFunc(); |
| return NULL; |
| } |
| |
| void MPEG4Writer::bufferChunk(const Chunk& chunk) { |
| ALOGV("bufferChunk: %p", chunk.mTrack); |
| Mutex::Autolock autolock(mLock); |
| CHECK_EQ(mDone, false); |
| |
| for (List<ChunkInfo>::iterator it = mChunkInfos.begin(); |
| it != mChunkInfos.end(); ++it) { |
| |
| if (chunk.mTrack == it->mTrack) { // Found owner |
| it->mChunks.push_back(chunk); |
| mChunkReadyCondition.signal(); |
| return; |
| } |
| } |
| |
| CHECK(!"Received a chunk for a unknown track"); |
| } |
| |
| void MPEG4Writer::writeChunkToFile(Chunk* chunk) { |
| ALOGV("writeChunkToFile: %" PRId64 " from %s track", |
| chunk->mTimeStampUs, chunk->mTrack->isAudio()? "audio": "video"); |
| |
| int32_t isFirstSample = true; |
| while (!chunk->mSamples.empty()) { |
| List<MediaBuffer *>::iterator it = chunk->mSamples.begin(); |
| |
| off64_t offset = chunk->mTrack->isAvc() |
| ? addLengthPrefixedSample_l(*it) |
| : addSample_l(*it); |
| |
| if (isFirstSample) { |
| chunk->mTrack->addChunkOffset(offset); |
| isFirstSample = false; |
| } |
| |
| (*it)->release(); |
| (*it) = NULL; |
| chunk->mSamples.erase(it); |
| } |
| chunk->mSamples.clear(); |
| } |
| |
| void MPEG4Writer::writeAllChunks() { |
| ALOGV("writeAllChunks"); |
| size_t outstandingChunks = 0; |
| Chunk chunk; |
| while (findChunkToWrite(&chunk)) { |
| writeChunkToFile(&chunk); |
| ++outstandingChunks; |
| } |
| |
| sendSessionSummary(); |
| |
| mChunkInfos.clear(); |
| ALOGD("%zu chunks are written in the last batch", outstandingChunks); |
| } |
| |
| bool MPEG4Writer::findChunkToWrite(Chunk *chunk) { |
| ALOGV("findChunkToWrite"); |
| |
| int64_t minTimestampUs = 0x7FFFFFFFFFFFFFFFLL; |
| Track *track = NULL; |
| for (List<ChunkInfo>::iterator it = mChunkInfos.begin(); |
| it != mChunkInfos.end(); ++it) { |
| if (!it->mChunks.empty()) { |
| List<Chunk>::iterator chunkIt = it->mChunks.begin(); |
| if (chunkIt->mTimeStampUs < minTimestampUs) { |
| minTimestampUs = chunkIt->mTimeStampUs; |
| track = it->mTrack; |
| } |
| } |
| } |
| |
| if (track == NULL) { |
| ALOGV("Nothing to be written after all"); |
| return false; |
| } |
| |
| if (mIsFirstChunk) { |
| mIsFirstChunk = false; |
| } |
| |
| for (List<ChunkInfo>::iterator it = mChunkInfos.begin(); |
| it != mChunkInfos.end(); ++it) { |
| if (it->mTrack == track) { |
| *chunk = *(it->mChunks.begin()); |
| it->mChunks.erase(it->mChunks.begin()); |
| CHECK_EQ(chunk->mTrack, track); |
| |
| int64_t interChunkTimeUs = |
| chunk->mTimeStampUs - it->mPrevChunkTimestampUs; |
| if (interChunkTimeUs > it->mPrevChunkTimestampUs) { |
| it->mMaxInterChunkDurUs = interChunkTimeUs; |
| } |
| |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| void MPEG4Writer::threadFunc() { |
| ALOGV("threadFunc"); |
| |
| prctl(PR_SET_NAME, (unsigned long)"MPEG4Writer", 0, 0, 0); |
| |
| Mutex::Autolock autoLock(mLock); |
| while (!mDone) { |
| Chunk chunk; |
| bool chunkFound = false; |
| |
| while (!mDone && !(chunkFound = findChunkToWrite(&chunk))) { |
| mChunkReadyCondition.wait(mLock); |
| } |
| |
| // In real time recording mode, write without holding the lock in order |
| // to reduce the blocking time for media track threads. |
| // Otherwise, hold the lock until the existing chunks get written to the |
| // file. |
| if (chunkFound) { |
| if (mIsRealTimeRecording) { |
| mLock.unlock(); |
| } |
| writeChunkToFile(&chunk); |
| if (mIsRealTimeRecording) { |
| mLock.lock(); |
| } |
| } |
| } |
| |
| writeAllChunks(); |
| } |
| |
| status_t MPEG4Writer::startWriterThread() { |
| ALOGV("startWriterThread"); |
| |
| mDone = false; |
| mIsFirstChunk = true; |
| mDriftTimeUs = 0; |
| for (List<Track *>::iterator it = mTracks.begin(); |
| it != mTracks.end(); ++it) { |
| ChunkInfo info; |
| info.mTrack = *it; |
| info.mPrevChunkTimestampUs = 0; |
| info.mMaxInterChunkDurUs = 0; |
| mChunkInfos.push_back(info); |
| } |
| |
| pthread_attr_t attr; |
| pthread_attr_init(&attr); |
| pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE); |
| pthread_create(&mThread, &attr, ThreadWrapper, this); |
| pthread_attr_destroy(&attr); |
| mWriterThreadStarted = true; |
| return OK; |
| } |
| |
| |
| status_t MPEG4Writer::Track::start(MetaData *params) { |
| if (!mDone && mPaused) { |
| mPaused = false; |
| mResumed = true; |
| return OK; |
| } |
| |
| int64_t startTimeUs; |
| if (params == NULL || !params->findInt64(kKeyTime, &startTimeUs)) { |
| startTimeUs = 0; |
| } |
| mStartTimeRealUs = startTimeUs; |
| |
| int32_t rotationDegrees; |
| if (!mIsAudio && params && params->findInt32(kKeyRotation, &rotationDegrees)) { |
| mRotation = rotationDegrees; |
| } |
| |
| initTrackingProgressStatus(params); |
| |
| sp<MetaData> meta = new MetaData; |
| if (mOwner->isRealTimeRecording() && mOwner->numTracks() > 1) { |
| /* |
| * This extra delay of accepting incoming audio/video signals |
| * helps to align a/v start time at the beginning of a recording |
| * session, and it also helps eliminate the "recording" sound for |
| * camcorder applications. |
| * |
| * If client does not set the start time offset, we fall back to |
| * use the default initial delay value. |
| */ |
| int64_t startTimeOffsetUs = mOwner->getStartTimeOffsetMs() * 1000LL; |
| if (startTimeOffsetUs < 0) { // Start time offset was not set |
| startTimeOffsetUs = kInitialDelayTimeUs; |
| } |
| startTimeUs += startTimeOffsetUs; |
| ALOGI("Start time offset: %" PRId64 " us", startTimeOffsetUs); |
| } |
| |
| meta->setInt64(kKeyTime, startTimeUs); |
| |
| status_t err = mSource->start(meta.get()); |
| if (err != OK) { |
| mDone = mReachedEOS = true; |
| return err; |
| } |
| |
| pthread_attr_t attr; |
| pthread_attr_init(&attr); |
| pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE); |
| |
| mDone = false; |
| mStarted = true; |
| mTrackDurationUs = 0; |
| mReachedEOS = false; |
| mEstimatedTrackSizeBytes = 0; |
| mMdatSizeBytes = 0; |
| mMaxChunkDurationUs = 0; |
| |
| pthread_create(&mThread, &attr, ThreadWrapper, this); |
| pthread_attr_destroy(&attr); |
| |
| return OK; |
| } |
| |
| status_t MPEG4Writer::Track::pause() { |
| mPaused = true; |
| return OK; |
| } |
| |
| status_t MPEG4Writer::Track::stop() { |
| ALOGD("%s track stopping", mIsAudio? "Audio": "Video"); |
| if (!mStarted) { |
| ALOGE("Stop() called but track is not started"); |
| return ERROR_END_OF_STREAM; |
| } |
| |
| if (mDone) { |
| return OK; |
| } |
| mDone = true; |
| |
| ALOGD("%s track source stopping", mIsAudio? "Audio": "Video"); |
| mSource->stop(); |
| ALOGD("%s track source stopped", mIsAudio? "Audio": "Video"); |
| |
| void *dummy; |
| pthread_join(mThread, &dummy); |
| status_t err = static_cast<status_t>(reinterpret_cast<uintptr_t>(dummy)); |
| |
| ALOGD("%s track stopped", mIsAudio? "Audio": "Video"); |
| return err; |
| } |
| |
| bool MPEG4Writer::Track::reachedEOS() { |
| return mReachedEOS; |
| } |
| |
| // static |
| void *MPEG4Writer::Track::ThreadWrapper(void *me) { |
| Track *track = static_cast<Track *>(me); |
| |
| status_t err = track->threadEntry(); |
| return (void *)(uintptr_t)err; |
| } |
| |
| static void getNalUnitType(uint8_t byte, uint8_t* type) { |
| ALOGV("getNalUnitType: %d", byte); |
| |
| // nal_unit_type: 5-bit unsigned integer |
| *type = (byte & 0x1F); |
| } |
| |
| static const uint8_t *findNextStartCode( |
| const uint8_t *data, size_t length) { |
| |
| ALOGV("findNextStartCode: %p %zu", data, length); |
| |
| size_t bytesLeft = length; |
| while (bytesLeft > 4 && |
| memcmp("\x00\x00\x00\x01", &data[length - bytesLeft], 4)) { |
| --bytesLeft; |
| } |
| if (bytesLeft <= 4) { |
| bytesLeft = 0; // Last parameter set |
| } |
| return &data[length - bytesLeft]; |
| } |
| |
| const uint8_t *MPEG4Writer::Track::parseParamSet( |
| const uint8_t *data, size_t length, int type, size_t *paramSetLen) { |
| |
| ALOGV("parseParamSet"); |
| CHECK(type == kNalUnitTypeSeqParamSet || |
| type == kNalUnitTypePicParamSet); |
| |
| const uint8_t *nextStartCode = findNextStartCode(data, length); |
| *paramSetLen = nextStartCode - data; |
| if (*paramSetLen == 0) { |
| ALOGE("Param set is malformed, since its length is 0"); |
| return NULL; |
| } |
| |
| AVCParamSet paramSet(*paramSetLen, data); |
| if (type == kNalUnitTypeSeqParamSet) { |
| if (*paramSetLen < 4) { |
| ALOGE("Seq parameter set malformed"); |
| return NULL; |
| } |
| if (mSeqParamSets.empty()) { |
| mProfileIdc = data[1]; |
| mProfileCompatible = data[2]; |
| mLevelIdc = data[3]; |
| } else { |
| if (mProfileIdc != data[1] || |
| mProfileCompatible != data[2] || |
| mLevelIdc != data[3]) { |
| ALOGE("Inconsistent profile/level found in seq parameter sets"); |
| return NULL; |
| } |
| } |
| mSeqParamSets.push_back(paramSet); |
| } else { |
| mPicParamSets.push_back(paramSet); |
| } |
| return nextStartCode; |
| } |
| |
| status_t MPEG4Writer::Track::copyAVCCodecSpecificData( |
| const uint8_t *data, size_t size) { |
| ALOGV("copyAVCCodecSpecificData"); |
| |
| // 2 bytes for each of the parameter set length field |
| // plus the 7 bytes for the header |
| if (size < 4 + 7) { |
| ALOGE("Codec specific data length too short: %zu", size); |
| return ERROR_MALFORMED; |
| } |
| |
| mCodecSpecificDataSize = size; |
| mCodecSpecificData = malloc(size); |
| memcpy(mCodecSpecificData, data, size); |
| return OK; |
| } |
| |
| status_t MPEG4Writer::Track::parseAVCCodecSpecificData( |
| const uint8_t *data, size_t size) { |
| |
| ALOGV("parseAVCCodecSpecificData"); |
| // Data starts with a start code. |
| // SPS and PPS are separated with start codes. |
| // Also, SPS must come before PPS |
| uint8_t type = kNalUnitTypeSeqParamSet; |
| bool gotSps = false; |
| bool gotPps = false; |
| const uint8_t *tmp = data; |
| const uint8_t *nextStartCode = data; |
| size_t bytesLeft = size; |
| size_t paramSetLen = 0; |
| mCodecSpecificDataSize = 0; |
| while (bytesLeft > 4 && !memcmp("\x00\x00\x00\x01", tmp, 4)) { |
| getNalUnitType(*(tmp + 4), &type); |
| if (type == kNalUnitTypeSeqParamSet) { |
| if (gotPps) { |
| ALOGE("SPS must come before PPS"); |
| return ERROR_MALFORMED; |
| } |
| if (!gotSps) { |
| gotSps = true; |
| } |
| nextStartCode = parseParamSet(tmp + 4, bytesLeft - 4, type, ¶mSetLen); |
| } else if (type == kNalUnitTypePicParamSet) { |
| if (!gotSps) { |
| ALOGE("SPS must come before PPS"); |
| return ERROR_MALFORMED; |
| } |
| if (!gotPps) { |
| gotPps = true; |
| } |
| nextStartCode = parseParamSet(tmp + 4, bytesLeft - 4, type, ¶mSetLen); |
| } else { |
| ALOGE("Only SPS and PPS Nal units are expected"); |
| return ERROR_MALFORMED; |
| } |
| |
| if (nextStartCode == NULL) { |
| return ERROR_MALFORMED; |
| } |
| |
| // Move on to find the next parameter set |
| bytesLeft -= nextStartCode - tmp; |
| tmp = nextStartCode; |
| mCodecSpecificDataSize += (2 + paramSetLen); |
| } |
| |
| { |
| // Check on the number of seq parameter sets |
| size_t nSeqParamSets = mSeqParamSets.size(); |
| if (nSeqParamSets == 0) { |
| ALOGE("Cound not find sequence parameter set"); |
| return ERROR_MALFORMED; |
| } |
| |
| if (nSeqParamSets > 0x1F) { |
| ALOGE("Too many seq parameter sets (%zu) found", nSeqParamSets); |
| return ERROR_MALFORMED; |
| } |
| } |
| |
| { |
| // Check on the number of pic parameter sets |
| size_t nPicParamSets = mPicParamSets.size(); |
| if (nPicParamSets == 0) { |
| ALOGE("Cound not find picture parameter set"); |
| return ERROR_MALFORMED; |
| } |
| if (nPicParamSets > 0xFF) { |
| ALOGE("Too many pic parameter sets (%zd) found", nPicParamSets); |
| return ERROR_MALFORMED; |
| } |
| } |
| // FIXME: |
| // Add chromat_format_idc, bit depth values, etc for AVC/h264 high profile and above |
| // and remove #if 0 |
| #if 0 |
| { |
| // Check on the profiles |
| // These profiles requires additional parameter set extensions |
| if (mProfileIdc == 100 || mProfileIdc == 110 || |
| mProfileIdc == 122 || mProfileIdc == 144) { |
| ALOGE("Sorry, no support for profile_idc: %d!", mProfileIdc); |
| return BAD_VALUE; |
| } |
| } |
| #endif |
| return OK; |
| } |
| |
| status_t MPEG4Writer::Track::makeAVCCodecSpecificData( |
| const uint8_t *data, size_t size) { |
| |
| if (mCodecSpecificData != NULL) { |
| ALOGE("Already have codec specific data"); |
| return ERROR_MALFORMED; |
| } |
| |
| if (size < 4) { |
| ALOGE("Codec specific data length too short: %zu", size); |
| return ERROR_MALFORMED; |
| } |
| |
| // Data is in the form of AVCCodecSpecificData |
| if (memcmp("\x00\x00\x00\x01", data, 4)) { |
| return copyAVCCodecSpecificData(data, size); |
| } |
| |
| if (parseAVCCodecSpecificData(data, size) != OK) { |
| return ERROR_MALFORMED; |
| } |
| |
| // ISO 14496-15: AVC file format |
| mCodecSpecificDataSize += 7; // 7 more bytes in the header |
| mCodecSpecificData = malloc(mCodecSpecificDataSize); |
| uint8_t *header = (uint8_t *)mCodecSpecificData; |
| header[0] = 1; // version |
| header[1] = mProfileIdc; // profile indication |
| header[2] = mProfileCompatible; // profile compatibility |
| header[3] = mLevelIdc; |
| |
| // 6-bit '111111' followed by 2-bit to lengthSizeMinuusOne |
| if (mOwner->useNalLengthFour()) { |
| header[4] = 0xfc | 3; // length size == 4 bytes |
| } else { |
| header[4] = 0xfc | 1; // length size == 2 bytes |
| } |
| |
| // 3-bit '111' followed by 5-bit numSequenceParameterSets |
| int nSequenceParamSets = mSeqParamSets.size(); |
| header[5] = 0xe0 | nSequenceParamSets; |
| header += 6; |
| for (List<AVCParamSet>::iterator it = mSeqParamSets.begin(); |
| it != mSeqParamSets.end(); ++it) { |
| // 16-bit sequence parameter set length |
| uint16_t seqParamSetLength = it->mLength; |
| header[0] = seqParamSetLength >> 8; |
| header[1] = seqParamSetLength & 0xff; |
| |
| // SPS NAL unit (sequence parameter length bytes) |
| memcpy(&header[2], it->mData, seqParamSetLength); |
| header += (2 + seqParamSetLength); |
| } |
| |
| // 8-bit nPictureParameterSets |
| int nPictureParamSets = mPicParamSets.size(); |
| header[0] = nPictureParamSets; |
| header += 1; |
| for (List<AVCParamSet>::iterator it = mPicParamSets.begin(); |
| it != mPicParamSets.end(); ++it) { |
| // 16-bit picture parameter set length |
| uint16_t picParamSetLength = it->mLength; |
| header[0] = picParamSetLength >> 8; |
| header[1] = picParamSetLength & 0xff; |
| |
| // PPS Nal unit (picture parameter set length bytes) |
| memcpy(&header[2], it->mData, picParamSetLength); |
| header += (2 + picParamSetLength); |
| } |
| |
| return OK; |
| } |
| |
| /* |
| * Updates the drift time from the audio track so that |
| * the video track can get the updated drift time information |
| * from the file writer. The fluctuation of the drift time of the audio |
| * encoding path is smoothed out with a simple filter by giving a larger |
| * weight to more recently drift time. The filter coefficients, 0.5 and 0.5, |
| * are heuristically determined. |
| */ |
| void MPEG4Writer::Track::updateDriftTime(const sp<MetaData>& meta) { |
| int64_t driftTimeUs = 0; |
| if (meta->findInt64(kKeyDriftTime, &driftTimeUs)) { |
| int64_t prevDriftTimeUs = mOwner->getDriftTimeUs(); |
| int64_t timeUs = (driftTimeUs + prevDriftTimeUs) >> 1; |
| mOwner->setDriftTimeUs(timeUs); |
| } |
| } |
| |
| status_t MPEG4Writer::Track::threadEntry() { |
| int32_t count = 0; |
| const int64_t interleaveDurationUs = mOwner->interleaveDuration(); |
| const bool hasMultipleTracks = (mOwner->numTracks() > 1); |
| int64_t chunkTimestampUs = 0; |
| int32_t nChunks = 0; |
| int32_t nZeroLengthFrames = 0; |
| int64_t lastTimestampUs = 0; // Previous sample time stamp |
| int64_t lastDurationUs = 0; // Between the previous two samples |
| int64_t currDurationTicks = 0; // Timescale based ticks |
| int64_t lastDurationTicks = 0; // Timescale based ticks |
| int32_t sampleCount = 1; // Sample count in the current stts table entry |
| uint32_t previousSampleSize = 0; // Size of the previous sample |
| int64_t previousPausedDurationUs = 0; |
| int64_t timestampUs = 0; |
| int64_t cttsOffsetTimeUs = 0; |
| int64_t currCttsOffsetTimeTicks = 0; // Timescale based ticks |
| int64_t lastCttsOffsetTimeTicks = -1; // Timescale based ticks |
| int32_t cttsSampleCount = 0; // Sample count in the current ctts table entry |
| uint32_t lastSamplesPerChunk = 0; |
| |
| if (mIsAudio) { |
| prctl(PR_SET_NAME, (unsigned long)"AudioTrackEncoding", 0, 0, 0); |
| } else { |
| prctl(PR_SET_NAME, (unsigned long)"VideoTrackEncoding", 0, 0, 0); |
| } |
| |
| if (mOwner->isRealTimeRecording()) { |
| androidSetThreadPriority(0, ANDROID_PRIORITY_AUDIO); |
| } |
| |
| sp<MetaData> meta_data; |
| |
| status_t err = OK; |
| MediaBuffer *buffer; |
| const char *trackName = mIsAudio ? "Audio" : "Video"; |
| while (!mDone && (err = mSource->read(&buffer)) == OK) { |
| if (buffer->range_length() == 0) { |
| buffer->release(); |
| buffer = NULL; |
| ++nZeroLengthFrames; |
| continue; |
| } |
| |
| // If the codec specific data has not been received yet, delay pause. |
| // After the codec specific data is received, discard what we received |
| // when the track is to be paused. |
| if (mPaused && !mResumed) { |
| buffer->release(); |
| buffer = NULL; |
| continue; |
| } |
| |
| ++count; |
| |
| int32_t isCodecConfig; |
| if (buffer->meta_data()->findInt32(kKeyIsCodecConfig, &isCodecConfig) |
| && isCodecConfig) { |
| CHECK(!mGotAllCodecSpecificData); |
| |
| if (mIsAvc) { |
| status_t err = makeAVCCodecSpecificData( |
| (const uint8_t *)buffer->data() |
| + buffer->range_offset(), |
| buffer->range_length()); |
| CHECK_EQ((status_t)OK, err); |
| } else if (mIsMPEG4) { |
| mCodecSpecificDataSize = buffer->range_length(); |
| mCodecSpecificData = malloc(mCodecSpecificDataSize); |
| memcpy(mCodecSpecificData, |
| (const uint8_t *)buffer->data() |
| + buffer->range_offset(), |
| buffer->range_length()); |
| } |
| |
| buffer->release(); |
| buffer = NULL; |
| |
| mGotAllCodecSpecificData = true; |
| continue; |
| } |
| |
| // Make a deep copy of the MediaBuffer and Metadata and release |
| // the original as soon as we can |
| MediaBuffer *copy = new MediaBuffer(buffer->range_length()); |
| memcpy(copy->data(), (uint8_t *)buffer->data() + buffer->range_offset(), |
| buffer->range_length()); |
| copy->set_range(0, buffer->range_length()); |
| meta_data = new MetaData(*buffer->meta_data().get()); |
| buffer->release(); |
| buffer = NULL; |
| |
| if (mIsAvc) StripStartcode(copy); |
| |
| size_t sampleSize = copy->range_length(); |
| if (mIsAvc) { |
| if (mOwner->useNalLengthFour()) { |
| sampleSize += 4; |
| } else { |
| sampleSize += 2; |
| } |
| } |
| |
| // Max file size or duration handling |
| mMdatSizeBytes += sampleSize; |
| updateTrackSizeEstimate(); |
| |
| if (mOwner->exceedsFileSizeLimit()) { |
| mOwner->notify(MEDIA_RECORDER_EVENT_INFO, MEDIA_RECORDER_INFO_MAX_FILESIZE_REACHED, 0); |
| break; |
| } |
| if (mOwner->exceedsFileDurationLimit()) { |
| mOwner->notify(MEDIA_RECORDER_EVENT_INFO, MEDIA_RECORDER_INFO_MAX_DURATION_REACHED, 0); |
| break; |
| } |
| |
| |
| int32_t isSync = false; |
| meta_data->findInt32(kKeyIsSyncFrame, &isSync); |
| CHECK(meta_data->findInt64(kKeyTime, ×tampUs)); |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| if (mStszTableEntries->count() == 0) { |
| mFirstSampleTimeRealUs = systemTime() / 1000; |
| mStartTimestampUs = timestampUs; |
| mOwner->setStartTimestampUs(mStartTimestampUs); |
| previousPausedDurationUs = mStartTimestampUs; |
| } |
| |
| if (mResumed) { |
| int64_t durExcludingEarlierPausesUs = timestampUs - previousPausedDurationUs; |
| if (WARN_UNLESS(durExcludingEarlierPausesUs >= 0ll, "for %s track", trackName)) { |
| copy->release(); |
| return ERROR_MALFORMED; |
| } |
| |
| int64_t pausedDurationUs = durExcludingEarlierPausesUs - mTrackDurationUs; |
| if (WARN_UNLESS(pausedDurationUs >= lastDurationUs, "for %s track", trackName)) { |
| copy->release(); |
| return ERROR_MALFORMED; |
| } |
| |
| previousPausedDurationUs += pausedDurationUs - lastDurationUs; |
| mResumed = false; |
| } |
| |
| timestampUs -= previousPausedDurationUs; |
| if (WARN_UNLESS(timestampUs >= 0ll, "for %s track", trackName)) { |
| copy->release(); |
| return ERROR_MALFORMED; |
| } |
| |
| if (!mIsAudio) { |
| /* |
| * Composition time: timestampUs |
| * Decoding time: decodingTimeUs |
| * Composition time offset = composition time - decoding time |
| */ |
| int64_t decodingTimeUs; |
| CHECK(meta_data->findInt64(kKeyDecodingTime, &decodingTimeUs)); |
| decodingTimeUs -= previousPausedDurationUs; |
| cttsOffsetTimeUs = |
| timestampUs + kMaxCttsOffsetTimeUs - decodingTimeUs; |
| if (WARN_UNLESS(cttsOffsetTimeUs >= 0ll, "for %s track", trackName)) { |
| copy->release(); |
| return ERROR_MALFORMED; |
| } |
| |
| timestampUs = decodingTimeUs; |
| ALOGV("decoding time: %" PRId64 " and ctts offset time: %" PRId64, |
| timestampUs, cttsOffsetTimeUs); |
| |
| // Update ctts box table if necessary |
| currCttsOffsetTimeTicks = |
| (cttsOffsetTimeUs * mTimeScale + 500000LL) / 1000000LL; |
| if (WARN_UNLESS(currCttsOffsetTimeTicks <= 0x0FFFFFFFFLL, "for %s track", trackName)) { |
| copy->release(); |
| return ERROR_MALFORMED; |
| } |
| |
| if (mStszTableEntries->count() == 0) { |
| // Force the first ctts table entry to have one single entry |
| // so that we can do adjustment for the initial track start |
| // time offset easily in writeCttsBox(). |
| lastCttsOffsetTimeTicks = currCttsOffsetTimeTicks; |
| addOneCttsTableEntry(1, currCttsOffsetTimeTicks); |
| cttsSampleCount = 0; // No sample in ctts box is pending |
| } else { |
| if (currCttsOffsetTimeTicks != lastCttsOffsetTimeTicks) { |
| addOneCttsTableEntry(cttsSampleCount, lastCttsOffsetTimeTicks); |
| lastCttsOffsetTimeTicks = currCttsOffsetTimeTicks; |
| cttsSampleCount = 1; // One sample in ctts box is pending |
| } else { |
| ++cttsSampleCount; |
| } |
| } |
| |
| // Update ctts time offset range |
| if (mStszTableEntries->count() == 0) { |
| mMinCttsOffsetTimeUs = currCttsOffsetTimeTicks; |
| mMaxCttsOffsetTimeUs = currCttsOffsetTimeTicks; |
| } else { |
| if (currCttsOffsetTimeTicks > mMaxCttsOffsetTimeUs) { |
| mMaxCttsOffsetTimeUs = currCttsOffsetTimeTicks; |
| } else if (currCttsOffsetTimeTicks < mMinCttsOffsetTimeUs) { |
| mMinCttsOffsetTimeUs = currCttsOffsetTimeTicks; |
| } |
| } |
| |
| } |
| |
| if (mOwner->isRealTimeRecording()) { |
| if (mIsAudio) { |
| updateDriftTime(meta_data); |
| } |
| } |
| |
| if (WARN_UNLESS(timestampUs >= 0ll, "for %s track", trackName)) { |
| copy->release(); |
| return ERROR_MALFORMED; |
| } |
| |
| ALOGV("%s media time stamp: %" PRId64 " and previous paused duration %" PRId64, |
| trackName, timestampUs, previousPausedDurationUs); |
| if (timestampUs > mTrackDurationUs) { |
| mTrackDurationUs = timestampUs; |
| } |
| |
| // We need to use the time scale based ticks, rather than the |
| // timestamp itself to determine whether we have to use a new |
| // stts entry, since we may have rounding errors. |
| // The calculation is intended to reduce the accumulated |
| // rounding errors. |
| currDurationTicks = |
| ((timestampUs * mTimeScale + 500000LL) / 1000000LL - |
| (lastTimestampUs * mTimeScale + 500000LL) / 1000000LL); |
| if (currDurationTicks < 0ll) { |
| ALOGE("timestampUs %" PRId64 " < lastTimestampUs %" PRId64 " for %s track", |
| timestampUs, lastTimestampUs, trackName); |
| copy->release(); |
| return UNKNOWN_ERROR; |
| } |
| |
| // if the duration is different for this sample, see if it is close enough to the previous |
| // duration that we can fudge it and use the same value, to avoid filling the stts table |
| // with lots of near-identical entries. |
| // "close enough" here means that the current duration needs to be adjusted by less |
| // than 0.1 milliseconds |
| if (lastDurationTicks && (currDurationTicks != lastDurationTicks)) { |
| int64_t deltaUs = ((lastDurationTicks - currDurationTicks) * 1000000LL |
| + (mTimeScale / 2)) / mTimeScale; |
| if (deltaUs > -100 && deltaUs < 100) { |
| // use previous ticks, and adjust timestamp as if it was actually that number |
| // of ticks |
| currDurationTicks = lastDurationTicks; |
| timestampUs += deltaUs; |
| } |
| } |
| |
| mStszTableEntries->add(htonl(sampleSize)); |
| if (mStszTableEntries->count() > 2) { |
| |
| // Force the first sample to have its own stts entry so that |
| // we can adjust its value later to maintain the A/V sync. |
| if (mStszTableEntries->count() == 3 || currDurationTicks != lastDurationTicks) { |
| addOneSttsTableEntry(sampleCount, lastDurationTicks); |
| sampleCount = 1; |
| } else { |
| ++sampleCount; |
| } |
| |
| } |
| if (mSamplesHaveSameSize) { |
| if (mStszTableEntries->count() >= 2 && previousSampleSize != sampleSize) { |
| mSamplesHaveSameSize = false; |
| } |
| previousSampleSize = sampleSize; |
| } |
| ALOGV("%s timestampUs/lastTimestampUs: %" PRId64 "/%" PRId64, |
| trackName, timestampUs, lastTimestampUs); |
| lastDurationUs = timestampUs - lastTimestampUs; |
| lastDurationTicks = currDurationTicks; |
| lastTimestampUs = timestampUs; |
| |
| if (isSync != 0) { |
| addOneStssTableEntry(mStszTableEntries->count()); |
| } |
| |
| if (mTrackingProgressStatus) { |
| if (mPreviousTrackTimeUs <= 0) { |
| mPreviousTrackTimeUs = mStartTimestampUs; |
| } |
| trackProgressStatus(timestampUs); |
| } |
| if (!hasMultipleTracks) { |
| off64_t offset = mIsAvc? mOwner->addLengthPrefixedSample_l(copy) |
| : mOwner->addSample_l(copy); |
| |
| uint32_t count = (mOwner->use32BitFileOffset() |
| ? mStcoTableEntries->count() |
| : mCo64TableEntries->count()); |
| |
| if (count == 0) { |
| addChunkOffset(offset); |
| } |
| copy->release(); |
| copy = NULL; |
| continue; |
| } |
| |
| mChunkSamples.push_back(copy); |
| if (interleaveDurationUs == 0) { |
| addOneStscTableEntry(++nChunks, 1); |
| bufferChunk(timestampUs); |
| } else { |
| if (chunkTimestampUs == 0) { |
| chunkTimestampUs = timestampUs; |
| } else { |
| int64_t chunkDurationUs = timestampUs - chunkTimestampUs; |
| if (chunkDurationUs > interleaveDurationUs) { |
| if (chunkDurationUs > mMaxChunkDurationUs) { |
| mMaxChunkDurationUs = chunkDurationUs; |
| } |
| ++nChunks; |
| if (nChunks == 1 || // First chunk |
| lastSamplesPerChunk != mChunkSamples.size()) { |
| lastSamplesPerChunk = mChunkSamples.size(); |
| addOneStscTableEntry(nChunks, lastSamplesPerChunk); |
| } |
| bufferChunk(timestampUs); |
| chunkTimestampUs = timestampUs; |
| } |
| } |
| } |
| |
| } |
| |
| if (isTrackMalFormed()) { |
| err = ERROR_MALFORMED; |
| } |
| |
| mOwner->trackProgressStatus(mTrackId, -1, err); |
| |
| // Last chunk |
| if (!hasMultipleTracks) { |
| addOneStscTableEntry(1, mStszTableEntries->count()); |
| } else if (!mChunkSamples.empty()) { |
| addOneStscTableEntry(++nChunks, mChunkSamples.size()); |
| bufferChunk(timestampUs); |
| } |
| |
| // We don't really know how long the last frame lasts, since |
| // there is no frame time after it, just repeat the previous |
| // frame's duration. |
| if (mStszTableEntries->count() == 1) { |
| lastDurationUs = 0; // A single sample's duration |
| lastDurationTicks = 0; |
| } else { |
| ++sampleCount; // Count for the last sample |
| } |
| |
| if (mStszTableEntries->count() <= 2) { |
| addOneSttsTableEntry(1, lastDurationTicks); |
| if (sampleCount - 1 > 0) { |
| addOneSttsTableEntry(sampleCount - 1, lastDurationTicks); |
| } |
| } else { |
| addOneSttsTableEntry(sampleCount, lastDurationTicks); |
| } |
| |
| // The last ctts box may not have been written yet, and this |
| // is to make sure that we write out the last ctts box. |
| if (currCttsOffsetTimeTicks == lastCttsOffsetTimeTicks) { |
| if (cttsSampleCount > 0) { |
| addOneCttsTableEntry(cttsSampleCount, lastCttsOffsetTimeTicks); |
| } |
| } |
| |
| mTrackDurationUs += lastDurationUs; |
| mReachedEOS = true; |
| |
| sendTrackSummary(hasMultipleTracks); |
| |
| ALOGI("Received total/0-length (%d/%d) buffers and encoded %d frames. - %s", |
| count, nZeroLengthFrames, mStszTableEntries->count(), trackName); |
| if (mIsAudio) { |
| ALOGI("Audio track drift time: %" PRId64 " us", mOwner->getDriftTimeUs()); |
| } |
| |
| if (err == ERROR_END_OF_STREAM) { |
| return OK; |
| } |
| return err; |
| } |
| |
| bool MPEG4Writer::Track::isTrackMalFormed() const { |
| if (mStszTableEntries->count() == 0) { // no samples written |
| ALOGE("The number of recorded samples is 0"); |
| return true; |
| } |
| |
| if (!mIsAudio && mStssTableEntries->count() == 0) { // no sync frames for video |
| ALOGE("There are no sync frames for video track"); |
| return true; |
| } |
| |
| if (OK != checkCodecSpecificData()) { // no codec specific data |
| return true; |
| } |
| |
| return false; |
| } |
| |
| void MPEG4Writer::Track::sendTrackSummary(bool hasMultipleTracks) { |
| |
| // Send track summary only if test mode is enabled. |
| if (!isTestModeEnabled()) { |
| return; |
| } |
| |
| int trackNum = (mTrackId << 28); |
| |
| mOwner->notify(MEDIA_RECORDER_TRACK_EVENT_INFO, |
| trackNum | MEDIA_RECORDER_TRACK_INFO_TYPE, |
| mIsAudio? 0: 1); |
| |
| mOwner->notify(MEDIA_RECORDER_TRACK_EVENT_INFO, |
| trackNum | MEDIA_RECORDER_TRACK_INFO_DURATION_MS, |
| mTrackDurationUs / 1000); |
| |
| mOwner->notify(MEDIA_RECORDER_TRACK_EVENT_INFO, |
| trackNum | MEDIA_RECORDER_TRACK_INFO_ENCODED_FRAMES, |
| mStszTableEntries->count()); |
| |
| { |
| // The system delay time excluding the requested initial delay that |
| // is used to eliminate the recording sound. |
| int64_t startTimeOffsetUs = mOwner->getStartTimeOffsetMs() * 1000LL; |
| if (startTimeOffsetUs < 0) { // Start time offset was not set |
| startTimeOffsetUs = kInitialDelayTimeUs; |
| } |
| int64_t initialDelayUs = |
| mFirstSampleTimeRealUs - mStartTimeRealUs - startTimeOffsetUs; |
| |
| mOwner->notify(MEDIA_RECORDER_TRACK_EVENT_INFO, |
| trackNum | MEDIA_RECORDER_TRACK_INFO_INITIAL_DELAY_MS, |
| (initialDelayUs) / 1000); |
| } |
| |
| mOwner->notify(MEDIA_RECORDER_TRACK_EVENT_INFO, |
| trackNum | MEDIA_RECORDER_TRACK_INFO_DATA_KBYTES, |
| mMdatSizeBytes / 1024); |
| |
| if (hasMultipleTracks) { |
| mOwner->notify(MEDIA_RECORDER_TRACK_EVENT_INFO, |
| trackNum | MEDIA_RECORDER_TRACK_INFO_MAX_CHUNK_DUR_MS, |
| mMaxChunkDurationUs / 1000); |
| |
| int64_t moovStartTimeUs = mOwner->getStartTimestampUs(); |
| if (mStartTimestampUs != moovStartTimeUs) { |
| int64_t startTimeOffsetUs = mStartTimestampUs - moovStartTimeUs; |
| mOwner->notify(MEDIA_RECORDER_TRACK_EVENT_INFO, |
| trackNum | MEDIA_RECORDER_TRACK_INFO_START_OFFSET_MS, |
| startTimeOffsetUs / 1000); |
| } |
| } |
| } |
| |
| void MPEG4Writer::Track::trackProgressStatus(int64_t timeUs, status_t err) { |
| ALOGV("trackProgressStatus: %" PRId64 " us", timeUs); |
| |
| if (mTrackEveryTimeDurationUs > 0 && |
| timeUs - mPreviousTrackTimeUs >= mTrackEveryTimeDurationUs) { |
| ALOGV("Fire time tracking progress status at %" PRId64 " us", timeUs); |
| mOwner->trackProgressStatus(mTrackId, timeUs - mPreviousTrackTimeUs, err); |
| mPreviousTrackTimeUs = timeUs; |
| } |
| } |
| |
| void MPEG4Writer::trackProgressStatus( |
| size_t trackId, int64_t timeUs, status_t err) { |
| Mutex::Autolock lock(mLock); |
| int32_t trackNum = (trackId << 28); |
| |
| // Error notification |
| // Do not consider ERROR_END_OF_STREAM an error |
| if (err != OK && err != ERROR_END_OF_STREAM) { |
| notify(MEDIA_RECORDER_TRACK_EVENT_ERROR, |
| trackNum | MEDIA_RECORDER_TRACK_ERROR_GENERAL, |
| err); |
| return; |
| } |
| |
| if (timeUs == -1) { |
| // Send completion notification |
| notify(MEDIA_RECORDER_TRACK_EVENT_INFO, |
| trackNum | MEDIA_RECORDER_TRACK_INFO_COMPLETION_STATUS, |
| err); |
| } else { |
| // Send progress status |
| notify(MEDIA_RECORDER_TRACK_EVENT_INFO, |
| trackNum | MEDIA_RECORDER_TRACK_INFO_PROGRESS_IN_TIME, |
| timeUs / 1000); |
| } |
| } |
| |
| void MPEG4Writer::setDriftTimeUs(int64_t driftTimeUs) { |
| ALOGV("setDriftTimeUs: %" PRId64 " us", driftTimeUs); |
| Mutex::Autolock autolock(mLock); |
| mDriftTimeUs = driftTimeUs; |
| } |
| |
| int64_t MPEG4Writer::getDriftTimeUs() { |
| ALOGV("getDriftTimeUs: %" PRId64 " us", mDriftTimeUs); |
| Mutex::Autolock autolock(mLock); |
| return mDriftTimeUs; |
| } |
| |
| bool MPEG4Writer::isRealTimeRecording() const { |
| return mIsRealTimeRecording; |
| } |
| |
| bool MPEG4Writer::useNalLengthFour() { |
| return mUse4ByteNalLength; |
| } |
| |
| void MPEG4Writer::Track::bufferChunk(int64_t timestampUs) { |
| ALOGV("bufferChunk"); |
| |
| Chunk chunk(this, timestampUs, mChunkSamples); |
| mOwner->bufferChunk(chunk); |
| mChunkSamples.clear(); |
| } |
| |
| int64_t MPEG4Writer::Track::getDurationUs() const { |
| return mTrackDurationUs; |
| } |
| |
| int64_t MPEG4Writer::Track::getEstimatedTrackSizeBytes() const { |
| return mEstimatedTrackSizeBytes; |
| } |
| |
| status_t MPEG4Writer::Track::checkCodecSpecificData() const { |
| const char *mime; |
| CHECK(mMeta->findCString(kKeyMIMEType, &mime)); |
| if (!strcasecmp(MEDIA_MIMETYPE_AUDIO_AAC, mime) || |
| !strcasecmp(MEDIA_MIMETYPE_VIDEO_MPEG4, mime) || |
| !strcasecmp(MEDIA_MIMETYPE_VIDEO_AVC, mime)) { |
| if (!mCodecSpecificData || |
| mCodecSpecificDataSize <= 0) { |
| ALOGE("Missing codec specific data"); |
| return ERROR_MALFORMED; |
| } |
| } else { |
| if (mCodecSpecificData || |
| mCodecSpecificDataSize > 0) { |
| ALOGE("Unexepected codec specific data found"); |
| return ERROR_MALFORMED; |
| } |
| } |
| return OK; |
| } |
| |
| void MPEG4Writer::Track::writeTrackHeader(bool use32BitOffset) { |
| |
| ALOGV("%s track time scale: %d", |
| mIsAudio? "Audio": "Video", mTimeScale); |
| |
| uint32_t now = getMpeg4Time(); |
| mOwner->beginBox("trak"); |
| writeTkhdBox(now); |
| mOwner->beginBox("mdia"); |
| writeMdhdBox(now); |
| writeHdlrBox(); |
| mOwner->beginBox("minf"); |
| if (mIsAudio) { |
| writeSmhdBox(); |
| } else { |
| writeVmhdBox(); |
| } |
| writeDinfBox(); |
| writeStblBox(use32BitOffset); |
| mOwner->endBox(); // minf |
| mOwner->endBox(); // mdia |
| mOwner->endBox(); // trak |
| } |
| |
| void MPEG4Writer::Track::writeStblBox(bool use32BitOffset) { |
| mOwner->beginBox("stbl"); |
| mOwner->beginBox("stsd"); |
| mOwner->writeInt32(0); // version=0, flags=0 |
| mOwner->writeInt32(1); // entry count |
| if (mIsAudio) { |
| writeAudioFourCCBox(); |
| } else { |
| writeVideoFourCCBox(); |
| } |
| mOwner->endBox(); // stsd |
| writeSttsBox(); |
| writeCttsBox(); |
| if (!mIsAudio) { |
| writeStssBox(); |
| } |
| writeStszBox(); |
| writeStscBox(); |
| writeStcoBox(use32BitOffset); |
| mOwner->endBox(); // stbl |
| } |
| |
| void MPEG4Writer::Track::writeVideoFourCCBox() { |
| const char *mime; |
| bool success = mMeta->findCString(kKeyMIMEType, &mime); |
| CHECK(success); |
| if (!strcasecmp(MEDIA_MIMETYPE_VIDEO_MPEG4, mime)) { |
| mOwner->beginBox("mp4v"); |
| } else if (!strcasecmp(MEDIA_MIMETYPE_VIDEO_H263, mime)) { |
| mOwner->beginBox("s263"); |
| } else if (!strcasecmp(MEDIA_MIMETYPE_VIDEO_AVC, mime)) { |
| mOwner->beginBox("avc1"); |
| } else { |
| ALOGE("Unknown mime type '%s'.", mime); |
| CHECK(!"should not be here, unknown mime type."); |
| } |
| |
| mOwner->writeInt32(0); // reserved |
| mOwner->writeInt16(0); // reserved |
| mOwner->writeInt16(1); // data ref index |
| mOwner->writeInt16(0); // predefined |
| mOwner->writeInt16(0); // reserved |
| mOwner->writeInt32(0); // predefined |
| mOwner->writeInt32(0); // predefined |
| mOwner->writeInt32(0); // predefined |
| |
| int32_t width, height; |
| success = mMeta->findInt32(kKeyWidth, &width); |
| success = success && mMeta->findInt32(kKeyHeight, &height); |
| CHECK(success); |
| |
| mOwner->writeInt16(width); |
| mOwner->writeInt16(height); |
| mOwner->writeInt32(0x480000); // horiz resolution |
| mOwner->writeInt32(0x480000); // vert resolution |
| mOwner->writeInt32(0); // reserved |
| mOwner->writeInt16(1); // frame count |
| mOwner->writeInt8(0); // compressor string length |
| mOwner->write(" ", 31); |
| mOwner->writeInt16(0x18); // depth |
| mOwner->writeInt16(-1); // predefined |
| |
| CHECK_LT(23 + mCodecSpecificDataSize, 128); |
| |
| if (!strcasecmp(MEDIA_MIMETYPE_VIDEO_MPEG4, mime)) { |
| writeMp4vEsdsBox(); |
| } else if (!strcasecmp(MEDIA_MIMETYPE_VIDEO_H263, mime)) { |
| writeD263Box(); |
| } else if (!strcasecmp(MEDIA_MIMETYPE_VIDEO_AVC, mime)) { |
| writeAvccBox(); |
| } |
| |
| writePaspBox(); |
| mOwner->endBox(); // mp4v, s263 or avc1 |
| } |
| |
| void MPEG4Writer::Track::writeAudioFourCCBox() { |
| const char *mime; |
| bool success = mMeta->findCString(kKeyMIMEType, &mime); |
| CHECK(success); |
| const char *fourcc = NULL; |
| if (!strcasecmp(MEDIA_MIMETYPE_AUDIO_AMR_NB, mime)) { |
| fourcc = "samr"; |
| } else if (!strcasecmp(MEDIA_MIMETYPE_AUDIO_AMR_WB, mime)) { |
| fourcc = "sawb"; |
| } else if (!strcasecmp(MEDIA_MIMETYPE_AUDIO_AAC, mime)) { |
| fourcc = "mp4a"; |
| } else { |
| ALOGE("Unknown mime type '%s'.", mime); |
| CHECK(!"should not be here, unknown mime type."); |
| } |
| |
| mOwner->beginBox(fourcc); // audio format |
| mOwner->writeInt32(0); // reserved |
| mOwner->writeInt16(0); // reserved |
| mOwner->writeInt16(0x1); // data ref index |
| mOwner->writeInt32(0); // reserved |
| mOwner->writeInt32(0); // reserved |
| int32_t nChannels; |
| CHECK_EQ(true, mMeta->findInt32(kKeyChannelCount, &nChannels)); |
| mOwner->writeInt16(nChannels); // channel count |
| mOwner->writeInt16(16); // sample size |
| mOwner->writeInt16(0); // predefined |
| mOwner->writeInt16(0); // reserved |
| |
| int32_t samplerate; |
| success = mMeta->findInt32(kKeySampleRate, &samplerate); |
| CHECK(success); |
| mOwner->writeInt32(samplerate << 16); |
| if (!strcasecmp(MEDIA_MIMETYPE_AUDIO_AAC, mime)) { |
| writeMp4aEsdsBox(); |
| } else if (!strcasecmp(MEDIA_MIMETYPE_AUDIO_AMR_NB, mime) || |
| !strcasecmp(MEDIA_MIMETYPE_AUDIO_AMR_WB, mime)) { |
| writeDamrBox(); |
| } |
| mOwner->endBox(); |
| } |
| |
| void MPEG4Writer::Track::writeMp4aEsdsBox() { |
| mOwner->beginBox("esds"); |
| CHECK(mCodecSpecificData); |
| CHECK_GT(mCodecSpecificDataSize, 0); |
| |
| // Make sure all sizes encode to a single byte. |
| CHECK_LT(mCodecSpecificDataSize + 23, 128); |
| |
| mOwner->writeInt32(0); // version=0, flags=0 |
| mOwner->writeInt8(0x03); // ES_DescrTag |
| mOwner->writeInt8(23 + mCodecSpecificDataSize); |
| mOwner->writeInt16(0x0000);// ES_ID |
| mOwner->writeInt8(0x00); |
| |
| mOwner->writeInt8(0x04); // DecoderConfigDescrTag |
| mOwner->writeInt8(15 + mCodecSpecificDataSize); |
| mOwner->writeInt8(0x40); // objectTypeIndication ISO/IEC 14492-2 |
| mOwner->writeInt8(0x15); // streamType AudioStream |
| |
| mOwner->writeInt16(0x03); // XXX |
| mOwner->writeInt8(0x00); // buffer size 24-bit |
| int32_t bitRate; |
| bool success = mMeta->findInt32(kKeyBitRate, &bitRate); |
| mOwner->writeInt32(success ? bitRate : 96000); // max bit rate |
| mOwner->writeInt32(success ? bitRate : 96000); // avg bit rate |
| |
| mOwner->writeInt8(0x05); // DecoderSpecificInfoTag |
| mOwner->writeInt8(mCodecSpecificDataSize); |
| mOwner->write(mCodecSpecificData, mCodecSpecificDataSize); |
| |
| static const uint8_t kData2[] = { |
| 0x06, // SLConfigDescriptorTag |
| 0x01, |
| 0x02 |
| }; |
| mOwner->write(kData2, sizeof(kData2)); |
| |
| mOwner->endBox(); // esds |
| } |
| |
| void MPEG4Writer::Track::writeMp4vEsdsBox() { |
| CHECK(mCodecSpecificData); |
| CHECK_GT(mCodecSpecificDataSize, 0); |
| mOwner->beginBox("esds"); |
| |
| mOwner->writeInt32(0); // version=0, flags=0 |
| |
| mOwner->writeInt8(0x03); // ES_DescrTag |
| mOwner->writeInt8(23 + mCodecSpecificDataSize); |
| mOwner->writeInt16(0x0000); // ES_ID |
| mOwner->writeInt8(0x1f); |
| |
| mOwner->writeInt8(0x04); // DecoderConfigDescrTag |
| mOwner->writeInt8(15 + mCodecSpecificDataSize); |
| mOwner->writeInt8(0x20); // objectTypeIndication ISO/IEC 14492-2 |
| mOwner->writeInt8(0x11); // streamType VisualStream |
| |
| static const uint8_t kData[] = { |
| 0x01, 0x77, 0x00, |
| 0x00, 0x03, 0xe8, 0x00, |
| 0x00, 0x03, 0xe8, 0x00 |
| }; |
| mOwner->write(kData, sizeof(kData)); |
| |
| mOwner->writeInt8(0x05); // DecoderSpecificInfoTag |
| |
| mOwner->writeInt8(mCodecSpecificDataSize); |
| mOwner->write(mCodecSpecificData, mCodecSpecificDataSize); |
| |
| static const uint8_t kData2[] = { |
| 0x06, // SLConfigDescriptorTag |
| 0x01, |
| 0x02 |
| }; |
| mOwner->write(kData2, sizeof(kData2)); |
| |
| mOwner->endBox(); // esds |
| } |
| |
| void MPEG4Writer::Track::writeTkhdBox(uint32_t now) { |
| mOwner->beginBox("tkhd"); |
| // Flags = 7 to indicate that the track is enabled, and |
| // part of the presentation |
| mOwner->writeInt32(0x07); // version=0, flags=7 |
| mOwner->writeInt32(now); // creation time |
| mOwner->writeInt32(now); // modification time |
| mOwner->writeInt32(mTrackId); // track id starts with 1 |
| mOwner->writeInt32(0); // reserved |
| int64_t trakDurationUs = getDurationUs(); |
| int32_t mvhdTimeScale = mOwner->getTimeScale(); |
| int32_t tkhdDuration = |
| (trakDurationUs * mvhdTimeScale + 5E5) / 1E6; |
| mOwner->writeInt32(tkhdDuration); // in mvhd timescale |
| mOwner->writeInt32(0); // reserved |
| mOwner->writeInt32(0); // reserved |
| mOwner->writeInt16(0); // layer |
| mOwner->writeInt16(0); // alternate group |
| mOwner->writeInt16(mIsAudio ? 0x100 : 0); // volume |
| mOwner->writeInt16(0); // reserved |
| |
| mOwner->writeCompositionMatrix(mRotation); // matrix |
| |
| if (mIsAudio) { |
| mOwner->writeInt32(0); |
| mOwner->writeInt32(0); |
| } else { |
| int32_t width, height; |
| bool success = mMeta->findInt32(kKeyWidth, &width); |
| success = success && mMeta->findInt32(kKeyHeight, &height); |
| CHECK(success); |
| |
| mOwner->writeInt32(width << 16); // 32-bit fixed-point value |
| mOwner->writeInt32(height << 16); // 32-bit fixed-point value |
| } |
| mOwner->endBox(); // tkhd |
| } |
| |
| void MPEG4Writer::Track::writeVmhdBox() { |
| mOwner->beginBox("vmhd"); |
| mOwner->writeInt32(0x01); // version=0, flags=1 |
| mOwner->writeInt16(0); // graphics mode |
| mOwner->writeInt16(0); // opcolor |
| mOwner->writeInt16(0); |
| mOwner->writeInt16(0); |
| mOwner->endBox(); |
| } |
| |
| void MPEG4Writer::Track::writeSmhdBox() { |
| mOwner->beginBox("smhd"); |
| mOwner->writeInt32(0); // version=0, flags=0 |
| mOwner->writeInt16(0); // balance |
| mOwner->writeInt16(0); // reserved |
| mOwner->endBox(); |
| } |
| |
| void MPEG4Writer::Track::writeHdlrBox() { |
| mOwner->beginBox("hdlr"); |
| mOwner->writeInt32(0); // version=0, flags=0 |
| mOwner->writeInt32(0); // component type: should be mhlr |
| mOwner->writeFourcc(mIsAudio ? "soun" : "vide"); // component subtype |
| mOwner->writeInt32(0); // reserved |
| mOwner->writeInt32(0); // reserved |
| mOwner->writeInt32(0); // reserved |
| // Removing "r" for the name string just makes the string 4 byte aligned |
| mOwner->writeCString(mIsAudio ? "SoundHandle": "VideoHandle"); // name |
| mOwner->endBox(); |
| } |
| |
| void MPEG4Writer::Track::writeMdhdBox(uint32_t now) { |
| int64_t trakDurationUs = getDurationUs(); |
| mOwner->beginBox("mdhd"); |
| mOwner->writeInt32(0); // version=0, flags=0 |
| mOwner->writeInt32(now); // creation time |
| mOwner->writeInt32(now); // modification time |
| mOwner->writeInt32(mTimeScale); // media timescale |
| int32_t mdhdDuration = (trakDurationUs * mTimeScale + 5E5) / 1E6; |
| mOwner->writeInt32(mdhdDuration); // use media timescale |
| // Language follows the three letter standard ISO-639-2/T |
| // 'e', 'n', 'g' for "English", for instance. |
| // Each character is packed as the difference between its ASCII value and 0x60. |
| // For "English", these are 00101, 01110, 00111. |
| // XXX: Where is the padding bit located: 0x15C7? |
| mOwner->writeInt16(0); // language code |
| mOwner->writeInt16(0); // predefined |
| mOwner->endBox(); |
| } |
| |
| void MPEG4Writer::Track::writeDamrBox() { |
| // 3gpp2 Spec AMRSampleEntry fields |
| mOwner->beginBox("damr"); |
| mOwner->writeCString(" "); // vendor: 4 bytes |
| mOwner->writeInt8(0); // decoder version |
| mOwner->writeInt16(0x83FF); // mode set: all enabled |
| mOwner->writeInt8(0); // mode change period |
| mOwner->writeInt8(1); // frames per sample |
| mOwner->endBox(); |
| } |
| |
| void MPEG4Writer::Track::writeUrlBox() { |
| // The table index here refers to the sample description index |
| // in the sample table entries. |
| mOwner->beginBox("url "); |
| mOwner->writeInt32(1); // version=0, flags=1 (self-contained) |
| mOwner->endBox(); // url |
| } |
| |
| void MPEG4Writer::Track::writeDrefBox() { |
| mOwner->beginBox("dref"); |
| mOwner->writeInt32(0); // version=0, flags=0 |
| mOwner->writeInt32(1); // entry count (either url or urn) |
| writeUrlBox(); |
| mOwner->endBox(); // dref |
| } |
| |
| void MPEG4Writer::Track::writeDinfBox() { |
| mOwner->beginBox("dinf"); |
| writeDrefBox(); |
| mOwner->endBox(); // dinf |
| } |
| |
| void MPEG4Writer::Track::writeAvccBox() { |
| CHECK(mCodecSpecificData); |
| CHECK_GE(mCodecSpecificDataSize, 5); |
| |
| // Patch avcc's lengthSize field to match the number |
| // of bytes we use to indicate the size of a nal unit. |
| uint8_t *ptr = (uint8_t *)mCodecSpecificData; |
| ptr[4] = (ptr[4] & 0xfc) | (mOwner->useNalLengthFour() ? 3 : 1); |
| mOwner->beginBox("avcC"); |
| mOwner->write(mCodecSpecificData, mCodecSpecificDataSize); |
| mOwner->endBox(); // avcC |
| } |
| |
| void MPEG4Writer::Track::writeD263Box() { |
| mOwner->beginBox("d263"); |
| mOwner->writeInt32(0); // vendor |
| mOwner->writeInt8(0); // decoder version |
| mOwner->writeInt8(10); // level: 10 |
| mOwner->writeInt8(0); // profile: 0 |
| mOwner->endBox(); // d263 |
| } |
| |
| // This is useful if the pixel is not square |
| void MPEG4Writer::Track::writePaspBox() { |
| mOwner->beginBox("pasp"); |
| mOwner->writeInt32(1 << 16); // hspacing |
| mOwner->writeInt32(1 << 16); // vspacing |
| mOwner->endBox(); // pasp |
| } |
| |
| int32_t MPEG4Writer::Track::getStartTimeOffsetScaledTime() const { |
| int64_t trackStartTimeOffsetUs = 0; |
| int64_t moovStartTimeUs = mOwner->getStartTimestampUs(); |
| if (mStartTimestampUs != moovStartTimeUs) { |
| CHECK_GT(mStartTimestampUs, moovStartTimeUs); |
| trackStartTimeOffsetUs = mStartTimestampUs - moovStartTimeUs; |
| } |
| return (trackStartTimeOffsetUs * mTimeScale + 500000LL) / 1000000LL; |
| } |
| |
| void MPEG4Writer::Track::writeSttsBox() { |
| mOwner->beginBox("stts"); |
| mOwner->writeInt32(0); // version=0, flags=0 |
| uint32_t duration; |
| CHECK(mSttsTableEntries->get(duration, 1)); |
| duration = htonl(duration); // Back to host byte order |
| mSttsTableEntries->set(htonl(duration + getStartTimeOffsetScaledTime()), 1); |
| mSttsTableEntries->write(mOwner); |
| mOwner->endBox(); // stts |
| } |
| |
| void MPEG4Writer::Track::writeCttsBox() { |
| if (mIsAudio) { // ctts is not for audio |
| return; |
| } |
| |
| // There is no B frame at all |
| if (mMinCttsOffsetTimeUs == mMaxCttsOffsetTimeUs) { |
| return; |
| } |
| |
| // Do not write ctts box when there is no need to have it. |
| if (mCttsTableEntries->count() == 0) { |
| return; |
| } |
| |
| ALOGV("ctts box has %d entries with range [%" PRId64 ", %" PRId64 "]", |
| mCttsTableEntries->count(), mMinCttsOffsetTimeUs, mMaxCttsOffsetTimeUs); |
| |
| mOwner->beginBox("ctts"); |
| mOwner->writeInt32(0); // version=0, flags=0 |
| uint32_t duration; |
| CHECK(mCttsTableEntries->get(duration, 1)); |
| duration = htonl(duration); // Back host byte order |
| mCttsTableEntries->set(htonl(duration + getStartTimeOffsetScaledTime() - mMinCttsOffsetTimeUs), 1); |
| mCttsTableEntries->write(mOwner); |
| mOwner->endBox(); // ctts |
| } |
| |
| void MPEG4Writer::Track::writeStssBox() { |
| mOwner->beginBox("stss"); |
| mOwner->writeInt32(0); // version=0, flags=0 |
| mStssTableEntries->write(mOwner); |
| mOwner->endBox(); // stss |
| } |
| |
| void MPEG4Writer::Track::writeStszBox() { |
| mOwner->beginBox("stsz"); |
| mOwner->writeInt32(0); // version=0, flags=0 |
| mOwner->writeInt32(0); |
| mStszTableEntries->write(mOwner); |
| mOwner->endBox(); // stsz |
| } |
| |
| void MPEG4Writer::Track::writeStscBox() { |
| mOwner->beginBox("stsc"); |
| mOwner->writeInt32(0); // version=0, flags=0 |
| mStscTableEntries->write(mOwner); |
| mOwner->endBox(); // stsc |
| } |
| |
| void MPEG4Writer::Track::writeStcoBox(bool use32BitOffset) { |
| mOwner->beginBox(use32BitOffset? "stco": "co64"); |
| mOwner->writeInt32(0); // version=0, flags=0 |
| if (use32BitOffset) { |
| mStcoTableEntries->write(mOwner); |
| } else { |
| mCo64TableEntries->write(mOwner); |
| } |
| mOwner->endBox(); // stco or co64 |
| } |
| |
| void MPEG4Writer::writeUdtaBox() { |
| beginBox("udta"); |
| writeGeoDataBox(); |
| endBox(); |
| } |
| |
| void MPEG4Writer::writeHdlr() { |
| beginBox("hdlr"); |
| writeInt32(0); // Version, Flags |
| writeInt32(0); // Predefined |
| writeFourcc("mdta"); |
| writeInt32(0); // Reserved[0] |
| writeInt32(0); // Reserved[1] |
| writeInt32(0); // Reserved[2] |
| writeInt8(0); // Name (empty) |
| endBox(); |
| } |
| |
| void MPEG4Writer::writeKeys() { |
| size_t count = mMetaKeys->countEntries(); |
| |
| beginBox("keys"); |
| writeInt32(0); // Version, Flags |
| writeInt32(count); // Entry_count |
| for (size_t i = 0; i < count; i++) { |
| AMessage::Type type; |
| const char *key = mMetaKeys->getEntryNameAt(i, &type); |
| size_t n = strlen(key); |
| writeInt32(n + 8); |
| writeFourcc("mdta"); |
| write(key, n); // write without the \0 |
| } |
| endBox(); |
| } |
| |
| void MPEG4Writer::writeIlst() { |
| size_t count = mMetaKeys->countEntries(); |
| |
| beginBox("ilst"); |
| for (size_t i = 0; i < count; i++) { |
| beginBox(i + 1); // key id (1-based) |
| beginBox("data"); |
| AMessage::Type type; |
| const char *key = mMetaKeys->getEntryNameAt(i, &type); |
| switch (type) { |
| case AMessage::kTypeString: |
| { |
| AString val; |
| CHECK(mMetaKeys->findString(key, &val)); |
| writeInt32(1); // type = UTF8 |
| writeInt32(0); // default country/language |
| write(val.c_str(), strlen(val.c_str())); // write without \0 |
| break; |
| } |
| |
| case AMessage::kTypeFloat: |
| { |
| float val; |
| CHECK(mMetaKeys->findFloat(key, &val)); |
| writeInt32(23); // type = float32 |
| writeInt32(0); // default country/language |
| writeInt32(*reinterpret_cast<int32_t *>(&val)); |
| break; |
| } |
| |
| case AMessage::kTypeInt32: |
| { |
| int32_t val; |
| CHECK(mMetaKeys->findInt32(key, &val)); |
| writeInt32(67); // type = signed int32 |
| writeInt32(0); // default country/language |
| writeInt32(val); |
| break; |
| } |
| |
| default: |
| { |
| ALOGW("Unsupported key type, writing 0 instead"); |
| writeInt32(77); // type = unsigned int32 |
| writeInt32(0); // default country/language |
| writeInt32(0); |
| break; |
| } |
| } |
| endBox(); // data |
| endBox(); // key id |
| } |
| endBox(); // ilst |
| } |
| |
| void MPEG4Writer::writeMetaBox() { |
| size_t count = mMetaKeys->countEntries(); |
| if (count == 0) { |
| return; |
| } |
| |
| beginBox("meta"); |
| writeHdlr(); |
| writeKeys(); |
| writeIlst(); |
| endBox(); |
| } |
| |
| /* |
| * Geodata is stored according to ISO-6709 standard. |
| */ |
| void MPEG4Writer::writeGeoDataBox() { |
| beginBox("\xA9xyz"); |
| /* |
| * For historical reasons, any user data start |
| * with "\0xA9", must be followed by its assoicated |
| * language code. |
| * 0x0012: text string length |
| * 0x15c7: lang (locale) code: en |
| */ |
| writeInt32(0x001215c7); |
| writeLatitude(mLatitudex10000); |
| writeLongitude(mLongitudex10000); |
| writeInt8(0x2F); |
| endBox(); |
| } |
| |
| } // namespace android |