[android] Fix failing WriteSingleBatch tests

This PR (youtube#3325) changes SbPlayerGetMaximumNumberOfSamplesPerWrite() to 256 on ATV as Cobalt supports multiple samples per write to SbPlayer (b/227837774), but current testing files for SbPlayerWriteSampleTest.WriteSingleBatch tests are not long enough for the modification.

1. Set upper bounds for WriteSingleBatch tests (15 audio samples per write, 60 video samples per write) when SbPlayerGetMaximumNumberOfSamplesPerWrite() > 1.
2. Revisit the upper bounds when the requirement is changed (b/347728473).

b/347097484

Test-On-Device: true

starboard/android/shared/test_filters.py

@@ -97,9 +97,6 @@
 
         # TODO: b/280432564 Make this test work on lab devices consistently.
         'SbAudioSinkTest.ContinuousAppend',
-
-        ## TODO: b/347097484 This test failed/crashed with SbPlayerGetMaximumNumberOfSamplesPerWrite() of 256.
-        'SbPlayerWriteSampleTests/SbPlayerWriteSampleTest.WriteSingleBatch/*',
     ],
 }
 # pylint: enable=line-too-long

starboard/nplb/player_write_sample_test.cc

@@ -65,6 +65,13 @@ TEST_P(SbPlayerWriteSampleTest, NoInput) {
 }
 
 TEST_P(SbPlayerWriteSampleTest, WriteSingleBatch) {
+  // TODO: b/347728473 When the platform supports multiple
+  // samples per write to SbPlayer, the following numbers are
+  // sufficient to allow SbPlayer to play 60fps video.
+  // Revisit the maximum numbers if the requirement is changed.
+  const int kMaxAudioSamplesPerWrite = 15;
+  const int kMaxVideoSamplesPerWrite = 60;
+
   SbPlayerTestFixture player_fixture(GetParam(),
                                      &fake_graphics_context_provider_);
   if (HasFatalFailure()) {
@@ -73,14 +80,18 @@ TEST_P(SbPlayerWriteSampleTest, WriteSingleBatch) {
 
   GroupedSamples samples;
   if (player_fixture.HasAudio()) {
-    int samples_to_write = SbPlayerGetMaximumNumberOfSamplesPerWrite(
-        player_fixture.GetPlayer(), kSbMediaTypeAudio);
+    int samples_to_write =
+        std::min(SbPlayerGetMaximumNumberOfSamplesPerWrite(
+                     player_fixture.GetPlayer(), kSbMediaTypeAudio),
+                 kMaxAudioSamplesPerWrite);
     samples.AddAudioSamples(0, samples_to_write);
     samples.AddAudioEOS();
   }
   if (player_fixture.HasVideo()) {
-    int samples_to_write = SbPlayerGetMaximumNumberOfSamplesPerWrite(
-        player_fixture.GetPlayer(), kSbMediaTypeVideo);
+    int samples_to_write =
+        std::min(SbPlayerGetMaximumNumberOfSamplesPerWrite(
+                     player_fixture.GetPlayer(), kSbMediaTypeVideo),
+                 kMaxVideoSamplesPerWrite);
     samples.AddVideoSamples(0, samples_to_write);
     samples.AddVideoEOS();
   }