Add color decoding tests to SsaDecoderTest, remove SubStation Alpha colors" from…

Add color decoding tests to SsaDecoderTest, remove SubStation Alpha colors" from media.exolist.json.

demos/main/src/main/assets/media.exolist.json

@@ -507,13 +507,6 @@
         "subtitle_language": "en"
       },
       {
-        "name": "SubStation Alpha colors",
-        "uri": "https://storage.googleapis.com/exoplayer-test-media-1/gen-3/screens/dash-vod-single-segment/video-avc-baseline-480.mp4",
-        "subtitle_uri": "https://drive.google.com/uc?export=download&id=13EdW4Qru-vQerUlwS_Ht5Cely_Tn0tQe",
-        "subtitle_mime_type": "text/x-ssa",
-        "subtitle_language": "en"
-      },
-      {
         "name": "MPEG-4 Timed Text",
         "uri": "https://storage.googleapis.com/exoplayer-test-media-1/mp4/dizzy-with-tx3g.mp4"
       }

library/core/src/test/java/com/google/android/exoplayer2/text/ssa/SsaDecoderTest.java

@@ -18,7 +18,10 @@ package com.google.android.exoplayer2.text.ssa;
 import static com.google.common.truth.Truth.assertThat;
 import static com.google.common.truth.Truth.assertWithMessage;
 
+import android.graphics.Color;
 import android.text.Layout;
+import android.text.SpannableString;
+import android.text.style.ForegroundColorSpan;
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 import com.google.android.exoplayer2.testutil.TestUtil;
@@ -44,6 +47,7 @@ public final class SsaDecoderTest {
   private static final String INVALID_TIMECODES = "media/ssa/invalid_timecodes";
   private static final String INVALID_POSITIONS = "media/ssa/invalid_positioning";
   private static final String POSITIONS_WITHOUT_PLAYRES = "media/ssa/positioning_without_playres";
+  private static final String COLORS = "media/ssa/colors";
 
   @Test
   public void decodeEmpty() throws IOException {
@@ -267,6 +271,46 @@ public final class SsaDecoderTest {
     assertTypicalCue3(subtitle, 0);
   }
 
+  @Test
+  public void decodeColors() throws IOException {
+    SsaDecoder decoder = new SsaDecoder();
+    byte[] bytes = TestUtil.getByteArray(ApplicationProvider.getApplicationContext(), COLORS);
+    Subtitle subtitle = decoder.decode(bytes, bytes.length, false);
+    assertThat(subtitle.getEventTimeCount()).isEqualTo(12);
+    // &H000000FF (AABBGGRR) -> #FFFF0000 (AARRGGBB)
+    Cue firstCue = Iterables.getOnlyElement(subtitle.getCues(subtitle.getEventTime(0)));
+    ForegroundColorSpan firstSpan = getSpan(firstCue, ForegroundColorSpan.class);
+    assertThat(firstSpan.getForegroundColor()).isEqualTo(Color.RED);
+    // &H0000FFFF (AABBGGRR) -> #FFFFFF00 (AARRGGBB)
+    Cue secondCue = Iterables.getOnlyElement(subtitle.getCues(subtitle.getEventTime(2)));
+    ForegroundColorSpan secondSpan = getSpan(secondCue, ForegroundColorSpan.class);
+    assertThat(secondSpan.getForegroundColor()).isEqualTo(Color.YELLOW);
+    // &HFF00 (GGRR) -> #FF00FF00 (AARRGGBB)
+    Cue thirdClue = Iterables.getOnlyElement(subtitle.getCues(subtitle.getEventTime(4)));
+    ForegroundColorSpan thirdSpan = getSpan(thirdClue, ForegroundColorSpan.class);
+    assertThat(thirdSpan.getForegroundColor()).isEqualTo(Color.GREEN);
+    // &H400000FF (AABBGGRR) -> #BFFF0000 (AARRGGBB) -> -1073807360
+    Cue forthClue = Iterables.getOnlyElement(subtitle.getCues(subtitle.getEventTime(6)));
+    ForegroundColorSpan forthSpan = getSpan(forthClue, ForegroundColorSpan.class);
+    assertThat(forthSpan.getForegroundColor()).isEqualTo(-1073807360);
+    // 16711680 (AABBGGRR) -> &H00FF0000 (AABBGGRR) -> #FF0000FF (AARRGGBB) -> -16776961
+    Cue fifthClue = Iterables.getOnlyElement(subtitle.getCues(subtitle.getEventTime(8)));
+    ForegroundColorSpan fifthSpan = getSpan(fifthClue, ForegroundColorSpan.class);
+    assertThat(fifthSpan.getForegroundColor()).isEqualTo(-16776961);
+    // 2164195328 (AABBGGRR) -> &H80FF0000 (AABBGGRR) -> #7F0000FF (AARRGGBB) -> 2130706687
+    Cue sixthClue = Iterables.getOnlyElement(subtitle.getCues(subtitle.getEventTime(10)));
+    ForegroundColorSpan sixthSpan = getSpan(sixthClue, ForegroundColorSpan.class);
+    assertThat(sixthSpan.getForegroundColor()).isEqualTo(2130706687);
+  }
+
+  private static <T> T getSpan(Cue cue, Class<T> clazz) {
+    return getSpan(cue, 0, cue.text.length(), clazz);
+  }
+
+  private static <T> T getSpan(Cue cue, int start, int end, Class<T> clazz) {
+    return SpannableString.valueOf(cue.text).getSpans(start, end, clazz)[0];
+  }
+
   private static void assertTypicalCue1(Subtitle subtitle, int eventIndex) {
     assertThat(subtitle.getEventTime(eventIndex)).isEqualTo(0);
     assertThat(subtitle.getCues(subtitle.getEventTime(eventIndex)).get(0).text.toString())

testdata/src/test/assets/media/ssa/colors

+[Script Info]
+Title: Coloring
+Script Type: V4.00+
+PlayResX: 1280
+PlayResY: 720
+
+[V4+ Styles]
+Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, Encoding
+Style: PrimaryColourStyleHexRed        ,Roboto,50,&H000000FF,&H000000FF,&H00000000,&H00000000,0,0,0,0,100,100,0,0,1,3,0,2,50,50,70,1
+Style: PrimaryColourStyleHexYellow     ,Roboto,50,&H0000FFFF,&H000000FF,&H00000000,&H00000000,0,0,0,0,100,100,0,0,1,3,0,2,50,50,70,1
+Style: PrimaryColourStyleHexGreen      ,Roboto,50,&HFF00    ,&H000000FF,&H00000000,&H00000000,0,0,0,0,100,100,0,0,1,3,0,2,50,50,70,1
+Style: PrimaryColourStyleHexAlpha      ,Roboto,50,&H400000FF,&H000000FF,&H00000000,&H00000000,0,0,0,0,100,100,0,0,1,3,0,2,50,50,70,1
+Style: PrimaryColourStyleDecimal       ,Roboto,50,16711680  ,&H000000FF,&H00000000,&H00000000,0,0,0,0,100,100,0,0,1,3,0,2,50,50,70,1
+Style: PrimaryColourStyleDecimalAlpha  ,Roboto,50,2164195328,&H000000FF,&H00000000,&H00000000,0,0,0,0,100,100,0,0,1,3,0,2,50,50,70,1
+
+
+[Events]
+Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
+Dialogue: 0,0:00:00.95,0:00:03.11,PrimaryColourStyleHexRed         ,Arnold,0,0,0,,First line in RED (&H000000FF).
+Dialogue: 0,0:00:04.50,0:00:07.50,PrimaryColourStyleHexYellow      ,Arnold,0,0,0,,Second line in YELLOW (&H0000FFFF).
+Dialogue: 0,0:00:08.50,0:00:11.50,PrimaryColourStyleHexGreen       ,Arnold,0,0,0,,Third line in GREEN (leading zeros &HFF00).
+Dialogue: 0,0:00:12.50,0:00:15.50,PrimaryColourStyleHexAlpha       ,Arnold,0,0,0,,Fourth line in RED with alpha (&H400000FF).
+Dialogue: 0,0:00:16.50,0:00:19.50,PrimaryColourStyleDecimal        ,Arnold,0,0,0,,Fifth line in BLUE (16711680).
+Dialogue: 0,0:00:20.70,0:00:23.00,PrimaryColourStyleDecimalAlpha   ,Arnold,0,0,0,,Sixth line in BLUE with alpha (2164195328).
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