content: /*
   * Copyright 2021 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.text;
  
  import static com.google.common.truth.Truth.assertThat;
  
  import android.graphics.Bitmap;
  import android.graphics.Color;
  import android.graphics.Typeface;
  import android.text.Layout;
  import android.text.Spannable;
  import android.text.SpannableString;
  import android.text.Spanned;
  import android.text.SpannedString;
  import android.text.style.StrikethroughSpan;
  import android.text.style.StyleSpan;
  import android.text.style.UnderlineSpan;
  import androidx.test.ext.junit.runners.AndroidJUnit4;
  import com.google.android.exoplayer2.testutil.truth.SpannedSubject;
  import com.google.common.collect.ImmutableList;
  import java.util.List;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  
  /**
   * Test of {@link Cue} serialization and deserialization using {@link CueEncoder} and {@link
   * CueDecoder}.
   */
  @RunWith(AndroidJUnit4.class)
  public class CueSerializationTest {
    @Test
    public void serializingCueWithoutSpans() {
      CueEncoder encoder = new CueEncoder();
      CueDecoder decoder = new CueDecoder();
      Cue cue =
          new Cue.Builder()
              .setText(SpannedString.valueOf("text"))
              .setTextAlignment(Layout.Alignment.ALIGN_CENTER)
              .setMultiRowAlignment(Layout.Alignment.ALIGN_NORMAL)
              .setLine(5, Cue.LINE_TYPE_NUMBER)
              .setLineAnchor(Cue.ANCHOR_TYPE_END)
              .setPosition(0.4f)
              .setPositionAnchor(Cue.ANCHOR_TYPE_MIDDLE)
              .setTextSize(0.2f, Cue.TEXT_SIZE_TYPE_FRACTIONAL)
              .setSize(0.8f)
              .setWindowColor(Color.CYAN)
              .setVerticalType(Cue.VERTICAL_TYPE_RL)
              .setShearDegrees(-15f)
              .build();
  
      // encoding and decoding
      byte[] encodedCues = encoder.encode(ImmutableList.of(cue));
      List<Cue> cuesAfterDecoding = decoder.decode(encodedCues);
      Cue cueAfterDecoding = cuesAfterDecoding.get(0);
  
      assertThat(cueAfterDecoding.text.toString()).isEqualTo(cue.text.toString());
      assertThat(cueAfterDecoding.textAlignment).isEqualTo(cue.textAlignment);
      assertThat(cueAfterDecoding.multiRowAlignment).isEqualTo(cue.multiRowAlignment);
      assertThat(cueAfterDecoding.line).isEqualTo(cue.line);
      assertThat(cueAfterDecoding.lineType).isEqualTo(cue.lineType);
      assertThat(cueAfterDecoding.position).isEqualTo(cue.position);
      assertThat(cueAfterDecoding.positionAnchor).isEqualTo(cue.positionAnchor);
      assertThat(cueAfterDecoding.textSize).isEqualTo(cue.textSize);
      assertThat(cueAfterDecoding.textSizeType).isEqualTo(cue.textSizeType);
      assertThat(cueAfterDecoding.size).isEqualTo(cue.size);
      assertThat(cueAfterDecoding.windowColor).isEqualTo(cue.windowColor);
      assertThat(cueAfterDecoding.windowColorSet).isEqualTo(cue.windowColorSet);
      assertThat(cueAfterDecoding.verticalType).isEqualTo(cue.verticalType);
      assertThat(cueAfterDecoding.shearDegrees).isEqualTo(cue.shearDegrees);
    }
  
    @Test
    public void serializingBitmapCueAndCueWithAndroidSpans() {
      CueEncoder encoder = new CueEncoder();
      CueDecoder decoder = new CueDecoder();
      Spannable spannable = SpannableString.valueOf("text text");
      spannable.setSpan(
          new StrikethroughSpan(), 0, "text".length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
      spannable.setSpan(
          new StyleSpan(Typeface.BOLD), 0, "text text".length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
      spannable.setSpan(
          new StyleSpan(Typeface.ITALIC), 0, "text text".length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
      spannable.setSpan(
          new UnderlineSpan(),
          "text ".length(),
          "text text".length(),
          Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
      Cue textCue = new Cue.Builder().setText(spannable).build();
      Bitmap bitmap = Bitmap.createBitmap(1, 1, Bitmap.Config.ARGB_8888);
      Cue bitmapCue = new Cue.Builder().setBitmap(bitmap).build();
  
      // encoding and decoding
      byte[] encodedCues = encoder.encode(ImmutableList.of(textCue, bitmapCue));
      List<Cue> cuesAfterDecoding = decoder.decode(encodedCues);
  
      assertThat(cuesAfterDecoding).hasSize(2);
  
      Cue textCueAfterDecoding = cuesAfterDecoding.get(0);
      Cue bitmapCueAfterDecoding = cuesAfterDecoding.get(1);
  
      assertThat(textCueAfterDecoding.text.toString()).isEqualTo(textCue.text.toString());
      SpannedSubject.assertThat((Spanned) textCueAfterDecoding.text)
          .hasStrikethroughSpanBetween(0, "text".length());
      SpannedSubject.assertThat((Spanned) textCueAfterDecoding.text)
          .hasBoldSpanBetween(0, "text text".length());
      SpannedSubject.assertThat((Spanned) textCueAfterDecoding.text)
          .hasItalicSpanBetween(0, "text text".length());
      SpannedSubject.assertThat((Spanned) textCueAfterDecoding.text)
          .hasUnderlineSpanBetween("text ".length(), "text text".length());
  
      assertThat(bitmapCueAfterDecoding.bitmap.sameAs(bitmap)).isTrue();
    }
  }
  