Java MediaCodecUtil类代码示例

import com.google.android.exoplayer.MediaCodecUtil; //导入依赖的package包/类
@Override
protected DecoderInfo getDecoderInfo(MediaCodecSelector codecSelector, String mimeType,
        boolean requiresSecureDecoder) throws MediaCodecUtil.DecoderQueryException {
    try {
        if (mIsSwCodecEnabled && mCodecIsSwPreferred) {
            DecoderInfo swCodec = MediaSoftwareCodecUtil.getSoftwareDecoderInfo(
                    mimeType, requiresSecureDecoder);
            if (swCodec != null) {
                return swCodec;
            }
        }
    } catch (MediaSoftwareCodecUtil.DecoderQueryException e) {
    }
    return super.getDecoderInfo(codecSelector, mimeType,requiresSecureDecoder);
}
 

import com.google.android.exoplayer.MediaCodecUtil; //导入依赖的package包/类
@Override
protected boolean handlesTrack(MediaFormat mediaFormat) throws DecoderQueryException {
    // TODO: Use MediaCodecList.findDecoderForFormat on API 23.
    String mimeType = mediaFormat.mimeType;
    return MimeTypes.isVideo(mimeType) && (MimeTypes.VIDEO_UNKNOWN.equals(mimeType)
            || MediaCodecUtil.getDecoderInfo(mimeType, false) != null);
}
 

import com.google.android.exoplayer.MediaCodecUtil; //导入依赖的package包/类
private boolean shouldSkipAdaptiveTest(String mimeType) throws IOException {
  if (!MediaCodecUtil.getDecoderInfo(mimeType, false).adaptive) {
    assertTrue(Util.SDK_INT < 21);
    return true;
  }
  return false;
}
 

import com.google.android.exoplayer.MediaCodecUtil; //导入依赖的package包/类
/**
 * Determines whether an individual format is playable, given an array of allowed container types,
 * whether HD formats should be filtered and a maximum decodable frame size in pixels.
 */
private static boolean isFormatPlayable(Format format, String[] allowedContainerMimeTypes,
    boolean filterHdFormats) throws DecoderQueryException {
  if (allowedContainerMimeTypes != null
      && !Util.contains(allowedContainerMimeTypes, format.mimeType)) {
    // Filtering format based on its container mime type.
    return false;
  }
  if (filterHdFormats && (format.width >= 1280 || format.height >= 720)) {
    // Filtering format because it's HD.
    return false;
  }
  if (format.width > 0 && format.height > 0) {
    if (Util.SDK_INT >= 21) {
      String videoMediaMimeType = MimeTypes.getVideoMediaMimeType(format.codecs);
      if (MimeTypes.VIDEO_UNKNOWN.equals(videoMediaMimeType)) {
        // Assume the video is H.264.
        videoMediaMimeType = MimeTypes.VIDEO_H264;
      }
      if (format.frameRate > 0) {
        return MediaCodecUtil.isSizeAndRateSupportedV21(videoMediaMimeType, false, format.width,
            format.height, format.frameRate);
      } else {
        return MediaCodecUtil.isSizeSupportedV21(videoMediaMimeType, false, format.width,
            format.height);
      }
    }
    // Assume the video is H.264.
    if (format.width * format.height > MediaCodecUtil.maxH264DecodableFrameSize()) {
      // Filtering format because it exceeds the maximum decodable frame size.
      return false;
    }
  }
  return true;
}
 

import com.google.android.exoplayer.MediaCodecUtil; //导入依赖的package包/类
@Override
public DecoderInfo getDecoderInfo(String mimeType, boolean requiresSecureDecoder) throws MediaCodecUtil.DecoderQueryException {
    Log.d("Kaltura", "DeviceInfo: " + Util.getDeviceInfo() + ", mimeType:" + mimeType + ", requiresSecureDecoder" + requiresSecureDecoder);

    if (!requiresSecureDecoder && !isVendorSupportDefaultDecoder()) {
        DecoderInfo decoderInfo = MediaCodecUtil.getDecoderInfo(mimeType, requiresSecureDecoder);
        Log.d("Kaltura", "Using Decoder = " + decoderInfo.name);
        return  decoderInfo;
    }
    Log.d("Kaltura", "Using Default Decoder");
    return MediaCodecSelector.DEFAULT.getDecoderInfo(mimeType,requiresSecureDecoder);
}
 

import com.google.android.exoplayer.MediaCodecUtil; //导入依赖的package包/类
@Override
public void onManifest(String contentId, SmoothStreamingManifest manifest) {
  Handler mainHandler = playerActivity.getMainHandler();
  LoadControl loadControl = new DefaultLoadControl(new BufferPool(BUFFER_SEGMENT_SIZE));
  DefaultBandwidthMeter bandwidthMeter = new DefaultBandwidthMeter();

  // Obtain stream elements for playback.
  int maxDecodableFrameSize = MediaCodecUtil.maxH264DecodableFrameSize();
  int audioStreamElementIndex = -1;
  int videoStreamElementIndex = -1;
  ArrayList<Integer> videoTrackIndexList = new ArrayList<Integer>();
  for (int i = 0; i < manifest.streamElements.length; i++) {
    if (audioStreamElementIndex == -1
        && manifest.streamElements[i].type == StreamElement.TYPE_AUDIO) {
      audioStreamElementIndex = i;
    } else if (videoStreamElementIndex == -1
        && manifest.streamElements[i].type == StreamElement.TYPE_VIDEO) {
      videoStreamElementIndex = i;
      StreamElement streamElement = manifest.streamElements[i];
      for (int j = 0; j < streamElement.tracks.length; j++) {
        TrackElement trackElement = streamElement.tracks[j];
        if (trackElement.maxWidth * trackElement.maxHeight <= maxDecodableFrameSize) {
          videoTrackIndexList.add(j);
        } else {
          // The device isn't capable of playing this stream.
        }
      }
    }
  }
  int[] videoTrackIndices = Util.toArray(videoTrackIndexList);

  // Build the video renderer.
  DataSource videoDataSource = new UriDataSource(userAgent, bandwidthMeter);
  ChunkSource videoChunkSource = new SmoothStreamingChunkSource(manifestFetcher,
      videoStreamElementIndex, videoTrackIndices, videoDataSource,
      new AdaptiveEvaluator(bandwidthMeter), LIVE_EDGE_LATENCY_MS);
  ChunkSampleSource videoSampleSource = new ChunkSampleSource(videoChunkSource, loadControl,
      VIDEO_BUFFER_SEGMENTS * BUFFER_SEGMENT_SIZE, true);
  MediaCodecVideoTrackRenderer videoRenderer = new MediaCodecVideoTrackRenderer(videoSampleSource,
      MediaCodec.VIDEO_SCALING_MODE_SCALE_TO_FIT, 0, mainHandler, playerActivity, 50);

  // Build the audio renderer.
  DataSource audioDataSource = new UriDataSource(userAgent, bandwidthMeter);
  ChunkSource audioChunkSource = new SmoothStreamingChunkSource(manifestFetcher,
      audioStreamElementIndex, new int[] {0}, audioDataSource,
      new FormatEvaluator.FixedEvaluator(), LIVE_EDGE_LATENCY_MS);
  SampleSource audioSampleSource = new ChunkSampleSource(audioChunkSource, loadControl,
      AUDIO_BUFFER_SEGMENTS * BUFFER_SEGMENT_SIZE, true);
  MediaCodecAudioTrackRenderer audioRenderer = new MediaCodecAudioTrackRenderer(
      audioSampleSource);
  callback.onRenderers(videoRenderer, audioRenderer);
}
 

import com.google.android.exoplayer.MediaCodecUtil; //导入依赖的package包/类
@Override
public void onError(Exception e) {
    String errMsg = "Player Error";
    LOGE(TAG, errMsg, e);
    String errorString = "";
    if (e instanceof UnsupportedDrmException) {
        // Special case DRM failures.
        UnsupportedDrmException unsupportedDrmException = (UnsupportedDrmException) e;
        errorString = (Util.SDK_INT < 18) ? "error_drm_not_supported"
                : unsupportedDrmException.reason == UnsupportedDrmException.REASON_UNSUPPORTED_SCHEME
                ? "error_drm_unsupported_scheme" : "error_drm_unknown";
    } else if (e instanceof ExoPlaybackException && e.getCause() instanceof FileNotFoundException) {
        errorString = "DRM License Unavailable"; // probably license issue
    } else if (e instanceof ExoPlaybackException && e.getCause() instanceof BehindLiveWindowException) {
        LOGE(TAG, "Recovering BehindLiveWindowException"); // happens if network is bad and no more chunk in hte buffer
        mExoPlayer.prepare();
        return;
    } else if (e instanceof ExoPlaybackException && e.getCause() instanceof android.media.MediaCodec.CryptoException) {
        errorString = "DRM Error. Trying to recover"; // probably license issue
        mExoPlayer.prepare();
        return;
    } else if (e instanceof ExoPlaybackException
            && e.getCause() instanceof MediaCodecTrackRenderer.DecoderInitializationException) {
        // Special case for decoder initialization failures.
        MediaCodecTrackRenderer.DecoderInitializationException decoderInitializationException =
                (MediaCodecTrackRenderer.DecoderInitializationException) e.getCause();
        if (decoderInitializationException.decoderName == null) {
            if (decoderInitializationException.getCause() instanceof MediaCodecUtil.DecoderQueryException) {
                errorString = "error_querying_decoders ";
            } else if (decoderInitializationException.secureDecoderRequired) {
                errorString = "error_no_secure_decoder " +
                        decoderInitializationException.mimeType;
            } else {
                errorString = "error_no_decoder " +
                        decoderInitializationException.mimeType;
            }
        } else {
            errorString = "error_instantiating_decoder " +
                    decoderInitializationException.decoderName;
        }
    }
    else if (e.getCause() instanceof com.google.android.exoplayer.upstream.HttpDataSource.HttpDataSourceException) {
        mExoPlayer.prepare();
        errorString = "HttpDataSourceException . Trying to recover";
        LOGE(TAG, errorString);
        return;
    } else if (e.getCause() instanceof java.net.UnknownHostException) {
        mExoPlayer.prepare();
        errorString = "UnknownHostException . Trying to recover";
        LOGE(TAG, errorString);
        return;
    } else if (e.getCause() instanceof java.net.ConnectException) {
        mExoPlayer.prepare();
        errorString = "ConnectException . Trying to recover";
        LOGE(TAG, errorString);
        return;
    }
    else if (e.getCause() instanceof java.lang.IllegalStateException) {
        mExoPlayer.prepare();
        errorString = "IllegalStateException . Trying to recover";
        LOGE(TAG, errorString);
        return;
    }
    if (!"".equals(errorString)) {
        LOGE(TAG, errorString);
        errorString += "-";
    }
    mPlayerListener.eventWithValue(KExoPlayer.this, KPlayerListener.ErrorKey, TAG + "-" + errMsg + "-" + errorString + e.getMessage());
}
 

import com.google.android.exoplayer.MediaCodecUtil; //导入依赖的package包/类
@Override
public DecoderInfo getPassthroughDecoderInfo() throws MediaCodecUtil.DecoderQueryException {
    return MediaCodecSelector.DEFAULT.getPassthroughDecoderInfo();
}