com.google.android.exoplayer2.util.Util.scaleLargeTimestamp()方法的使用及代码示例

x33g5p2x  于2022-02-01 转载在 其他  
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本文整理了Java中com.google.android.exoplayer2.util.Util.scaleLargeTimestamp()方法的一些代码示例，展示了Util.scaleLargeTimestamp()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Util.scaleLargeTimestamp()方法的具体详情如下：
包路径：com.google.android.exoplayer2.util.Util
类名称：Util
方法名：scaleLargeTimestamp

Util.scaleLargeTimestamp介绍

[英]Scales a large timestamp.

Logically, scaling consists of a multiplication followed by a division. The actual operations performed are designed to minimize the probability of overflow.
[中]缩放一个大的时间戳。
从逻辑上讲，缩放由乘法和除法组成。执行的实际操作旨在将溢出概率降至最低。

代码示例

代码示例来源：origin: google/ExoPlayer

  1. /**
  2.  * Returns the presentation time offset, in microseconds.
  3.  */
  4. public long getPresentationTimeOffsetUs() {
  5.  return Util.scaleLargeTimestamp(presentationTimeOffset, C.MICROS_PER_SECOND, timescale);
  6. }

代码示例来源：origin: google/ExoPlayer

  1. public StreamElement(String baseUri, String chunkTemplate, int type, String subType,
  2.   long timescale, String name, int maxWidth, int maxHeight, int displayWidth,
  3.   int displayHeight, String language, Format[] formats, List<Long> chunkStartTimes,
  4.   long lastChunkDuration) {
  5.  this(
  6.    baseUri,
  7.    chunkTemplate,
  8.    type,
  9.    subType,
  10.    timescale,
  11.    name,
  12.    maxWidth,
  13.    maxHeight,
  14.    displayWidth,
  15.    displayHeight,
  16.    language,
  17.    formats,
  18.    chunkStartTimes,
  19.    Util.scaleLargeTimestamps(chunkStartTimes, C.MICROS_PER_SECOND, timescale),
  20.    Util.scaleLargeTimestamp(lastChunkDuration, C.MICROS_PER_SECOND, timescale));
  21. }

代码示例来源：origin: google/ExoPlayer

  1. long durationUs = Util.scaleLargeTimestamp(duration, C.MICROS_PER_SECOND, track.timescale);
  2.   && timestamps.length >= 2) {
  3.  long editStartTime = track.editListMediaTimes[0];
  4.  long editEndTime = editStartTime + Util.scaleLargeTimestamp(track.editListDurations[0],
  5.    track.timescale, track.movieTimescale);
  6.  if (canApplyEditWithGaplessInfo(timestamps, duration, editStartTime, editEndTime)) {
  7.   long paddingTimeUnits = duration - editEndTime;
  8.   long encoderDelay = Util.scaleLargeTimestamp(editStartTime - timestamps[0],
  9.     track.format.sampleRate, track.timescale);
  10.   long encoderPadding = Util.scaleLargeTimestamp(paddingTimeUnits,
  11.     track.format.sampleRate, track.timescale);
  12.   if ((encoderDelay != 0 || encoderPadding != 0) && encoderDelay <= Integer.MAX_VALUE
  13.    Util.scaleLargeTimestampsInPlace(timestamps, C.MICROS_PER_SECOND, track.timescale);
  14.    long editedDurationUs =
  15.      Util.scaleLargeTimestamp(
  16.        track.editListDurations[0], C.MICROS_PER_SECOND, track.movieTimescale);
  17.    return new TrackSampleTable(
  18.  for (int i = 0; i < timestamps.length; i++) {
  19.   timestamps[i] =
  20.     Util.scaleLargeTimestamp(
  21.       timestamps[i] - editStartTime, C.MICROS_PER_SECOND, track.timescale);
  22.    Util.scaleLargeTimestamp(duration - editStartTime, C.MICROS_PER_SECOND, track.timescale);
  23.  return new TrackSampleTable(
  24.    track, offsets, sizes, maximumSize, timestamps, flags, durationUs);

代码示例来源：origin: google/ExoPlayer

  1. /**
  2.  * Returns the specified duration scaled to take into account the speedup factor of this instance,
  3.  * in the same units as {@code duration}.
  4.  *
  5.  * @param duration The duration to scale taking into account speedup.
  6.  * @return The specified duration scaled to take into account speedup, in the same units as
  7.  *     {@code duration}.
  8.  */
  9. public long scaleDurationForSpeedup(long duration) {
  10.  if (outputBytes >= MIN_BYTES_FOR_SPEEDUP_CALCULATION) {
  11.   return outputSampleRateHz == sampleRateHz
  12.     ? Util.scaleLargeTimestamp(duration, inputBytes, outputBytes)
  13.     : Util.scaleLargeTimestamp(duration, inputBytes * outputSampleRateHz,
  14.       outputBytes * sampleRateHz);
  15.  } else {
  16.   return (long) ((double) speed * duration);
  17.  }
  18. }

代码示例来源：origin: google/ExoPlayer

  1. /** @see DashSegmentIndex#getTimeUs(long) */
  2. public final long getSegmentTimeUs(long sequenceNumber) {
  3.  long unscaledSegmentTime;
  4.  if (segmentTimeline != null) {
  5.   unscaledSegmentTime =
  6.     segmentTimeline.get((int) (sequenceNumber - startNumber)).startTime
  7.       - presentationTimeOffset;
  8.  } else {
  9.   unscaledSegmentTime = (sequenceNumber - startNumber) * duration;
  10.  }
  11.  return Util.scaleLargeTimestamp(unscaledSegmentTime, C.MICROS_PER_SECOND, timescale);
  12. }

代码示例来源：origin: google/ExoPlayer

  1. private long scaleTimecodeToUs(long unscaledTimecode) throws ParserException {
  2.  if (timecodeScale == C.TIME_UNSET) {
  3.   throw new ParserException("Can't scale timecode prior to timecodeScale being set.");
  4.  }
  5.  return Util.scaleLargeTimestamp(unscaledTimecode, timecodeScale, 1000);
  6. }

代码示例来源：origin: google/ExoPlayer

  1. /**
  2.  * Represents a StreamIndex element.
  3.  */
  4. public static class StreamElement {
  5.  private static final String URL_PLACEHOLDER_START_TIME_1 = "{start time}";
  6.  private static final String URL_PLACEHOLDER_START_TIME_2 = "{start_time}";
  7.  private static final String URL_PLACEHOLDER_BITRATE_1 = "{bitrate}";
  8.  private static final String URL_PLACEHOLDER_BITRATE_2 = "{Bitrate}";
  9.  public final int type;
  10.  public final String subType;
  11.  public final long timescale;
  12.  public final String name;
  13.  public final int maxWidth;
  14.  public final int maxHeight;
  15.  public final int displayWidth;
  16.  public final int displayHeight;
  17.  public final String language;
  18.  public final Format[] formats;
  19.  public final int chunkCount;
  20.  private final String baseUri;
  21.  private final String chunkTemplate;
  22.  private final List<Long> chunkStartTimes;
  23.  private final long[] chunkStartTimesUs;
  24.  private final long lastChunkDurationUs;
  25.  public StreamElement(String baseUri, String chunkTemplate, int type, String subType,

代码示例来源：origin: google/ExoPlayer

  1. writeNullTerminatedString(dataOutputStream, nonNullValue);
  2. writeUnsignedInt(dataOutputStream, timescale);
  3. long presentationTime = Util.scaleLargeTimestamp(eventMessage.presentationTimeUs,
  4.   timescale, C.MICROS_PER_SECOND);
  5. writeUnsignedInt(dataOutputStream, presentationTime);
  6. long duration = Util.scaleLargeTimestamp(eventMessage.durationMs, timescale, 1000);
  7. writeUnsignedInt(dataOutputStream, duration);
  8. writeUnsignedInt(dataOutputStream, eventMessage.id);

代码示例来源：origin: google/ExoPlayer

  1. @SuppressWarnings("ByteBufferBackingArray")
  2. @Override
  3. public Metadata decode(MetadataInputBuffer inputBuffer) {
  4.  ByteBuffer buffer = inputBuffer.data;
  5.  byte[] data = buffer.array();
  6.  int size = buffer.limit();
  7.  ParsableByteArray emsgData = new ParsableByteArray(data, size);
  8.  String schemeIdUri = Assertions.checkNotNull(emsgData.readNullTerminatedString());
  9.  String value = Assertions.checkNotNull(emsgData.readNullTerminatedString());
  10.  long timescale = emsgData.readUnsignedInt();
  11.  long presentationTimeUs = Util.scaleLargeTimestamp(emsgData.readUnsignedInt(),
  12.    C.MICROS_PER_SECOND, timescale);
  13.  long durationMs = Util.scaleLargeTimestamp(emsgData.readUnsignedInt(), 1000, timescale);
  14.  long id = emsgData.readUnsignedInt();
  15.  byte[] messageData = Arrays.copyOfRange(data, emsgData.getPosition(), size);
  16.  return new Metadata(new EventMessage(schemeIdUri, value, durationMs, id, messageData,
  17.    presentationTimeUs));
  18. }

代码示例来源：origin: google/ExoPlayer

  1. long duration = parseLong(xpp, "duration", C.TIME_UNSET);
  2. long presentationTime = parseLong(xpp, "presentationTime", 0);
  3. long durationMs = Util.scaleLargeTimestamp(duration, 1000, timescale);
  4. long presentationTimesUs = Util.scaleLargeTimestamp(presentationTime, C.MICROS_PER_SECOND,
  5.   timescale);
  6. String messageData = parseString(xpp, "messageData", null);

代码示例来源：origin: google/ExoPlayer

  1. long durationUs = Util.scaleLargeTimestamp(frameCount, samplesPerFrame * C.MICROS_PER_SECOND,
  2.   sampleRate);
  3. if ((flags & 0x06) != 0x06) {

代码示例来源：origin: google/ExoPlayer

  1. edtsOffset = Util.scaleLargeTimestamp(track.editListMediaTimes[0], 1000, track.timescale);
  2.   Util.scaleLargeTimestamp(cumulativeTime, 1000, timescale) - edtsOffset;
  3. sampleSizeTable[i] = sampleSize;
  4. sampleIsSyncFrameTable[i] = ((sampleFlags >> 16) & 0x1) == 0

代码示例来源：origin: google/ExoPlayer

  1. Util.scaleLargeTimestamp(atom.readUnsignedInt(), C.MICROS_PER_SECOND, timescale);

代码示例来源：origin: google/ExoPlayer

  1. long durationUs = Util.scaleLargeTimestamp(numFrames,
  2.   C.MICROS_PER_SECOND * (sampleRate >= 32000 ? 1152 : 576), sampleRate);
  3. int entryCount = frame.readUnsignedShort();

代码示例来源：origin: google/ExoPlayer

  1. offset += atom.readUnsignedLongToLong();
  2. long earliestPresentationTimeUs = Util.scaleLargeTimestamp(earliestPresentationTime,
  3.   C.MICROS_PER_SECOND, timescale);
  4.  timeUs = Util.scaleLargeTimestamp(time, C.MICROS_PER_SECOND, timescale);
  5.  durationsUs[i] = timeUs - timesUs[i];

代码示例来源：origin: google/ExoPlayer

  1. durationUs = C.TIME_UNSET;
  2. } else {
  3.  durationUs = Util.scaleLargeTimestamp(duration, C.MICROS_PER_SECOND, movieTimescale);

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