content: /*
   * Copyright 2022 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.
   */
  package com.google.android.exoplayer2.transformer;
  
  import static com.google.android.exoplayer2.util.Assertions.checkArgument;
  
  import androidx.annotation.Nullable;
  import com.google.android.exoplayer2.C;
  import com.google.errorprone.annotations.CanIgnoreReturnValue;
  
  /** Information about the result of a successful transformation. */
  public final class TransformationResult {
  
    /** A builder for {@link TransformationResult} instances. */
    public static final class Builder {
      private long durationMs;
      private long fileSizeBytes;
      private int averageAudioBitrate;
      private int averageVideoBitrate;
      private int videoFrameCount;
  
      public Builder() {
        durationMs = C.TIME_UNSET;
        fileSizeBytes = C.LENGTH_UNSET;
        averageAudioBitrate = C.RATE_UNSET_INT;
        averageVideoBitrate = C.RATE_UNSET_INT;
      }
  
      /**
       * Sets the duration of the video in milliseconds.
       *
       * <p>Input must be positive or {@link C#TIME_UNSET}.
       */
      @CanIgnoreReturnValue
      public Builder setDurationMs(long durationMs) {
        checkArgument(durationMs > 0 || durationMs == C.TIME_UNSET);
        this.durationMs = durationMs;
        return this;
      }
  
      /**
       * Sets the file size in bytes.
       *
       * <p>Input must be positive or {@link C#LENGTH_UNSET}.
       */
      @CanIgnoreReturnValue
      public Builder setFileSizeBytes(long fileSizeBytes) {
        checkArgument(fileSizeBytes > 0 || fileSizeBytes == C.LENGTH_UNSET);
        this.fileSizeBytes = fileSizeBytes;
        return this;
      }
  
      /**
       * Sets the average audio bitrate.
       *
       * <p>Input must be positive or {@link C#RATE_UNSET_INT}.
       */
      @CanIgnoreReturnValue
      public Builder setAverageAudioBitrate(int averageAudioBitrate) {
        checkArgument(averageAudioBitrate > 0 || averageAudioBitrate == C.RATE_UNSET_INT);
        this.averageAudioBitrate = averageAudioBitrate;
        return this;
      }
  
      /**
       * Sets the average video bitrate.
       *
       * <p>Input must be positive or {@link C#RATE_UNSET_INT}.
       */
      @CanIgnoreReturnValue
      public Builder setAverageVideoBitrate(int averageVideoBitrate) {
        checkArgument(averageVideoBitrate > 0 || averageVideoBitrate == C.RATE_UNSET_INT);
        this.averageVideoBitrate = averageVideoBitrate;
        return this;
      }
  
      /**
       * Sets the number of video frames.
       *
       * <p>Input must be positive or {@code 0}.
       */
      @CanIgnoreReturnValue
      public Builder setVideoFrameCount(int videoFrameCount) {
        checkArgument(videoFrameCount >= 0);
        this.videoFrameCount = videoFrameCount;
        return this;
      }
  
      public TransformationResult build() {
        return new TransformationResult(
            durationMs, fileSizeBytes, averageAudioBitrate, averageVideoBitrate, videoFrameCount);
      }
    }
  
    /** The duration of the file in milliseconds, or {@link C#TIME_UNSET} if unset or unknown. */
    public final long durationMs;
    /** The size of the file in bytes, or {@link C#LENGTH_UNSET} if unset or unknown. */
    public final long fileSizeBytes;
    /**
     * The average bitrate of the audio track data, or {@link C#RATE_UNSET_INT} if unset or unknown.
     */
    public final int averageAudioBitrate;
    /**
     * The average bitrate of the video track data, or {@link C#RATE_UNSET_INT} if unset or unknown.
     */
    public final int averageVideoBitrate;
    /** The number of video frames. */
    public final int videoFrameCount;
  
    private TransformationResult(
        long durationMs,
        long fileSizeBytes,
        int averageAudioBitrate,
        int averageVideoBitrate,
        int videoFrameCount) {
      this.durationMs = durationMs;
      this.fileSizeBytes = fileSizeBytes;
      this.averageAudioBitrate = averageAudioBitrate;
      this.averageVideoBitrate = averageVideoBitrate;
      this.videoFrameCount = videoFrameCount;
    }
  
    public Builder buildUpon() {
      return new Builder()
          .setDurationMs(durationMs)
          .setFileSizeBytes(fileSizeBytes)
          .setAverageAudioBitrate(averageAudioBitrate)
          .setAverageVideoBitrate(averageVideoBitrate)
          .setVideoFrameCount(videoFrameCount);
    }
  
    @Override
    public boolean equals(@Nullable Object o) {
      if (this == o) {
        return true;
      }
      if (!(o instanceof TransformationResult)) {
        return false;
      }
      TransformationResult result = (TransformationResult) o;
      return durationMs == result.durationMs
          && fileSizeBytes == result.fileSizeBytes
          && averageAudioBitrate == result.averageAudioBitrate
          && averageVideoBitrate == result.averageVideoBitrate
          && videoFrameCount == result.videoFrameCount;
    }
  
    @Override
    public int hashCode() {
      int result = (int) durationMs;
      result = 31 * result + (int) fileSizeBytes;
      result = 31 * result + averageAudioBitrate;
      result = 31 * result + averageVideoBitrate;
      result = 31 * result + videoFrameCount;
      return result;
    }
  }
  