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C++ sp::countTracks方法代码示例

本文整理汇总了C++中sp::countTracks方法的典型用法代码示例。如果您正苦于以下问题：C++ sp::countTracks方法的具体用法？C++ sp::countTracks怎么用？C++ sp::countTracks使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类sp的用法示例。


在下文中一共展示了sp::countTracks方法的7个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: switch

uint32_t
MP4MetadataStagefright::GetNumberTracks(mozilla::TrackInfo::TrackType aType) const
{
  size_t tracks = mMetadataExtractor->countTracks();
  uint32_t total = 0;
  for (size_t i = 0; i < tracks; i++) {
    sp<MetaData> metaData = mMetadataExtractor->getTrackMetaData(i);

    const char* mimeType;
    if (metaData == nullptr || !metaData->findCString(kKeyMIMEType, &mimeType)) {
      continue;
    }
    switch (aType) {
      case mozilla::TrackInfo::kAudioTrack:
        if (!strncmp(mimeType, "audio/", 6) &&
            CheckTrack(mimeType, metaData.get(), i)) {
          total++;
        }
        break;
      case mozilla::TrackInfo::kVideoTrack:
        if (!strncmp(mimeType, "video/", 6) &&
            CheckTrack(mimeType, metaData.get(), i)) {
          total++;
        }
        break;
      default:
        break;
    }
  }
  return total;
}
开发者ID:MekliCZ，项目名称:positron，代码行数:31，代码来源:MP4Metadata.cpp

示例2: while

mozilla::UniquePtr<mozilla::TrackInfo>
MP4MetadataStagefright::GetTrackInfo(mozilla::TrackInfo::TrackType aType,
                                     size_t aTrackNumber) const
{
  size_t tracks = mMetadataExtractor->countTracks();
  if (!tracks) {
    return nullptr;
  }
  int32_t index = -1;
  const char* mimeType;
  sp<MetaData> metaData;

  size_t i = 0;
  while (i < tracks) {
    metaData = mMetadataExtractor->getTrackMetaData(i);

    if (metaData == nullptr || !metaData->findCString(kKeyMIMEType, &mimeType)) {
      continue;
    }
    switch (aType) {
      case mozilla::TrackInfo::kAudioTrack:
        if (!strncmp(mimeType, "audio/", 6) &&
            CheckTrack(mimeType, metaData.get(), i)) {
          index++;
        }
        break;
      case mozilla::TrackInfo::kVideoTrack:
        if (!strncmp(mimeType, "video/", 6) &&
            CheckTrack(mimeType, metaData.get(), i)) {
          index++;
        }
        break;
      default:
        break;
    }
    if (index == aTrackNumber) {
      break;
    }
    i++;
  }
  if (index < 0) {
    return nullptr;
  }

  UniquePtr<mozilla::TrackInfo> e = CheckTrack(mimeType, metaData.get(), index);

  if (e) {
    metaData = mMetadataExtractor->getMetaData();
    int64_t movieDuration;
    if (!e->mDuration &&
        metaData->findInt64(kKeyMovieDuration, &movieDuration)) {
      // No duration in track, use movie extend header box one.
      e->mDuration = movieDuration;
    }
  }

  return e;
}
开发者ID:MekliCZ，项目名称:positron，代码行数:58，代码来源:MP4Metadata.cpp

示例3: Init

bool OmxDecoder::Init(sp<MediaExtractor>& extractor) {
#ifdef PR_LOGGING
  if (!gOmxDecoderLog) {
    gOmxDecoderLog = PR_NewLogModule("OmxDecoder");
  }
#endif

  const char* extractorMime;
  sp<MetaData> meta = extractor->getMetaData();

  ssize_t audioTrackIndex = -1;
  ssize_t videoTrackIndex = -1;

  for (size_t i = 0; i < extractor->countTracks(); ++i) {
    sp<MetaData> meta = extractor->getTrackMetaData(i);

    int32_t bitRate;
    if (!meta->findInt32(kKeyBitRate, &bitRate))
      bitRate = 0;

    const char *mime;
    if (!meta->findCString(kKeyMIMEType, &mime)) {
      continue;
    }

    if (videoTrackIndex == -1 && !strncasecmp(mime, "video/", 6)) {
      videoTrackIndex = i;
    } else if (audioTrackIndex == -1 && !strncasecmp(mime, "audio/", 6)) {
      audioTrackIndex = i;
    }
  }

  if (videoTrackIndex == -1 && audioTrackIndex == -1) {
    NS_WARNING("OMX decoder could not find video or audio tracks");
    return false;
  }

  mResource->SetReadMode(MediaCacheStream::MODE_PLAYBACK);

  if (videoTrackIndex != -1) {
    mVideoTrack = extractor->getTrack(videoTrackIndex);
  }

  if (audioTrackIndex != -1) {
    mAudioTrack = extractor->getTrack(audioTrackIndex);

#ifdef MOZ_AUDIO_OFFLOAD
    // mAudioTrack is be used by OMXCodec. For offloaded audio track, using same
    // object gives undetermined behavior. So get a new track
    mAudioOffloadTrack = extractor->getTrack(audioTrackIndex);
#endif
  }
  return true;
}
开发者ID:Andrel322，项目名称:gecko-dev，代码行数:54，代码来源:OmxDecoder.cpp

示例4: 

int32_t
MP4MetadataStagefright::GetTrackNumber(mozilla::TrackID aTrackID)
{
  size_t numTracks = mMetadataExtractor->countTracks();
  for (size_t i = 0; i < numTracks; i++) {
    sp<MetaData> metaData = mMetadataExtractor->getTrackMetaData(i);
    if (!metaData.get()) {
      continue;
    }
    int32_t value;
    if (metaData->findInt32(kKeyTrackID, &value) && value == aTrackID) {
      return i;
    }
  }
  return -1;
}
开发者ID:MekliCZ，项目名称:positron，代码行数:16，代码来源:MP4Metadata.cpp

示例5: if

bool
OmxDecoder::Init(sp<MediaExtractor>& extractor) {
  sp<MetaData> meta = extractor->getMetaData();

  ssize_t audioTrackIndex = -1;
  ssize_t videoTrackIndex = -1;

  for (size_t i = 0; i < extractor->countTracks(); ++i) {
    sp<MetaData> meta = extractor->getTrackMetaData(i);

    int32_t bitRate;
    if (!meta->findInt32(kKeyBitRate, &bitRate))
      bitRate = 0;

    const char *mime;
    if (!meta->findCString(kKeyMIMEType, &mime)) {
      continue;
    }

    if (videoTrackIndex == -1 && !strncasecmp(mime, "video/", 6)) {
      videoTrackIndex = i;
    } else if (audioTrackIndex == -1 && !strncasecmp(mime, "audio/", 6)) {
      audioTrackIndex = i;
    }
  }

  if (videoTrackIndex == -1 && audioTrackIndex == -1) {
    NS_WARNING("OMX decoder could not find video or audio tracks");
    return false;
  }

  if (videoTrackIndex != -1 && mDecoder->GetImageContainer()) {
    mVideoTrack = extractor->getTrack(videoTrackIndex);
  }

  if (audioTrackIndex != -1) {
    mAudioTrack = extractor->getTrack(audioTrackIndex);

#ifdef MOZ_AUDIO_OFFLOAD
    // mAudioTrack is be used by OMXCodec. For offloaded audio track, using same
    // object gives undetermined behavior. So get a new track
    mAudioOffloadTrack = extractor->getTrack(audioTrackIndex);
#endif
  }
  return true;
}
开发者ID:prashant2018，项目名称:gecko-dev，代码行数:46，代码来源:OmxDecoder.cpp

示例6: GetTrackNumber

bool
MP4MetadataStagefright::ReadTrackIndex(FallibleTArray<Index::Indice>& aDest, mozilla::TrackID aTrackID)
{
  size_t numTracks = mMetadataExtractor->countTracks();
  int32_t trackNumber = GetTrackNumber(aTrackID);
  if (trackNumber < 0) {
    return false;
  }
  sp<MediaSource> track = mMetadataExtractor->getTrack(trackNumber);
  if (!track.get()) {
    return false;
  }
  sp<MetaData> metadata = mMetadataExtractor->getTrackMetaData(trackNumber);
  int64_t mediaTime;
  if (!metadata->findInt64(kKeyMediaTime, &mediaTime)) {
    mediaTime = 0;
  }
  bool rv = ConvertIndex(aDest, track->exportIndex(), mediaTime);

  return rv;
}
开发者ID:MekliCZ，项目名称:positron，代码行数:21，代码来源:MP4Metadata.cpp

示例7: CHECK

int
CPlayerClient::foundMediaFile(const char *path, sp<IMediaExtractor>& pExtractor_in)
{
    AUTO_LOG();

    CHECK_PTR_EXT(path, BAD_VALUE);
    CHECK_PTR_EXT(pExtractor_in, BAD_VALUE);
    CHECK_PTR_EXT(m_pSink, BAD_VALUE);

    for (size_t i = 0; i < pExtractor_in->countTracks(); ++i) {
        sp<MetaData> meta = pExtractor_in->getTrackMetaData(i);
        CHECK_PTR_EXT(meta, BAD_VALUE);

        const char *_mime;
        CHECK(meta->findCString(kKeyMIMEType, &_mime));
        CHECK_PTR_EXT(_mime, BAD_VALUE);

        String8 mime = String8(_mime);

        if (!strncasecmp(mime.string(), "audio/", 6)) {
            AudioPlayer *player = new AudioPlayer(m_pSink);
            CHECK_PTR_EXT(player, BAD_VALUE);
                        
            player->setSource(pExtractor_in->getTrack(i));
            player->start(false /* sourceAlreadyStarted */);

            //status_t finalStatus;
            //while (!player->reachedEOS(&finalStatus)) {
            //    usleep(100000ll);
            //}

            delete player;
            player = NULL;            
        }
    }

    RETURN(OK);
}
开发者ID:dAck2cC2，项目名称:m3e，代码行数:38，代码来源:CPlayerClient.cpp


注：本文中的sp::countTracks方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。