在Android应用程序中使用ExoPlayer API进行视频播放

javaCopy codeTrackSelection.Factory videoTrackSelectionFactory = new AdaptiveTrackSelection.Factory();
DefaultTrackSelector trackSelector = new DefaultTrackSelector(videoTrackSelectionFactory);
player.setTrackSelector(trackSelector);

float brightness = 0.1f;
float contrast = 1.2f;

trackSelector.setParameters(
  trackSelector.buildUponParameters().setRendererDisabled(0, false)
    .setRendererColorInfo(0,
      new ColorInfo(ColorSpace.get(ColorSpace.Named.SRGB), ColorTransferCharacteristic
        .get(ColorTransferCharacteristic.Named.SMPTE2084), ColorRange.get(ColorRange.Named
        .LIMITED), null))
    .setRendererScaleMode(0, RendererCapabilities.SCALE_MODE_RESIZE)
    .setRendererMaxDroppedFramesToNotify(0, 50)
    .setRendererVideoScalingMode(0, C.VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING)
    .setRendererVideoFrameMetadataListener(0, new FrameMetadataListener() {
      @Override
      public void onVideoFrameAboutToBeRendered(long presentationTimeUs, long releaseTimeNs,
        Format format, @Nullable MediaFormat mediaFormat) {
        // Adjust the brightness and contrast of the video frame.
        videoFrameProcessor.adjustBrightness(brightness);
        videoFrameProcessor.adjustContrast(contrast);
      }
    }));

上述代码创建了一个AdaptiveTrackSelection.Factory对象，并将其传